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directory 1.3.0.0 → 1.3.11.0

raw patch · 55 files changed

Files

HsDirectoryConfig.h.in view
@@ -3,6 +3,9 @@ /* Filename extension of executable files */ #undef EXE_EXTENSION +/* Define to 1 if you have the `CreateSymbolicLinkW' function. */+#undef HAVE_CREATESYMBOLICLINKW+ /* Define to 1 if you have the <fcntl.h> header file. */ #undef HAVE_FCNTL_H @@ -15,12 +18,15 @@ /* Define to 1 if you have the <limits.h> header file. */ #undef HAVE_LIMITS_H -/* Define to 1 if you have the <memory.h> header file. */-#undef HAVE_MEMORY_H+/* Define to 1 if you have the `realpath' function. */+#undef HAVE_REALPATH  /* Define to 1 if you have the <stdint.h> header file. */ #undef HAVE_STDINT_H +/* Define to 1 if you have the <stdio.h> header file. */+#undef HAVE_STDIO_H+ /* Define to 1 if you have the <stdlib.h> header file. */ #undef HAVE_STDLIB_H @@ -63,5 +69,7 @@ /* Define to the version of this package. */ #undef PACKAGE_VERSION -/* Define to 1 if you have the ANSI C header files. */+/* Define to 1 if all of the C90 standard headers exist (not just the ones+   required in a freestanding environment). This macro is provided for+   backward compatibility; new code need not use it. */ #undef STDC_HEADERS
README.md view
@@ -3,9 +3,10 @@  [![Hackage][hi]][hl] [![Build status][bi]][bl]-[![Windows build status][wi]][wl]+[![Dependencies status][di]][dl]  Documentation can be found on [Hackage][hl].+Changes between versions are recorded in the [change log](changelog.md).  Building from Git repository ----------------------------@@ -22,8 +23,8 @@  [hi]: https://img.shields.io/hackage/v/directory.svg [hl]: https://hackage.haskell.org/package/directory-[bi]: https://travis-ci.org/haskell/directory.svg?branch=master-[bl]: https://travis-ci.org/haskell/directory-[wi]: https://ci.appveyor.com/api/projects/status/github/haskell/directory?branch=master&svg=true-[wl]: https://ci.appveyor.com/project/hvr/directory+[bi]: https://github.com/haskell/directory/actions/workflows/build.yml/badge.svg+[bl]: https://github.com/haskell/directory/actions+[di]: https://img.shields.io/hackage-deps/v/directory.svg+[dl]: http://packdeps.haskellers.com/feed?needle=exact:directory [ac]: https://gnu.org/software/autoconf
System/Directory.hs view
@@ -1,1948 +1,1352 @@-{-# LANGUAGE CPP #-}--#if !(MIN_VERSION_base(4,8,0))--- In base-4.8.0 the Foreign module became Safe-{-# LANGUAGE Trustworthy #-}-#endif---------------------------------------------------------------------------------- |--- Module      :  System.Directory--- Copyright   :  (c) The University of Glasgow 2001--- License     :  BSD-style (see the file libraries/base/LICENSE)------ Maintainer  :  libraries@haskell.org--- Stability   :  stable--- Portability :  portable------ System-independent interface to directory manipulation.-----------------------------------------------------------------------------------#include <HsDirectoryConfig.h>-module System.Directory-   (-    -- $intro--    -- * Actions on directories-      createDirectory-    , createDirectoryIfMissing-    , removeDirectory-    , removeDirectoryRecursive-    , removePathForcibly-    , renameDirectory-    , listDirectory-    , getDirectoryContents-    -- ** Current working directory-    , getCurrentDirectory-    , setCurrentDirectory-    , withCurrentDirectory--    -- * Pre-defined directories-    , getHomeDirectory-    , XdgDirectory(..)-    , getXdgDirectory-    , getAppUserDataDirectory-    , getUserDocumentsDirectory-    , getTemporaryDirectory--    -- * Actions on files-    , removeFile-    , renameFile-    , renamePath-    , copyFile-    , copyFileWithMetadata--    , canonicalizePath-    , makeAbsolute-    , makeRelativeToCurrentDirectory-    , findExecutable-    , findExecutables-    , findExecutablesInDirectories-    , findFile-    , findFiles-    , findFileWith-    , findFilesWith-    , exeExtension--    , getFileSize--    -- * Existence tests-    , doesPathExist-    , doesFileExist-    , doesDirectoryExist--    -- * Symbolic links-    , pathIsSymbolicLink--    -- * Permissions--    -- $permissions--    , Permissions-    , emptyPermissions-    , readable-    , writable-    , executable-    , searchable-    , setOwnerReadable-    , setOwnerWritable-    , setOwnerExecutable-    , setOwnerSearchable--    , getPermissions-    , setPermissions-    , copyPermissions--    -- * Timestamps--    , getAccessTime-    , getModificationTime-    , setAccessTime-    , setModificationTime--    -- * Deprecated-    , isSymbolicLink--   ) where-import Prelude ()-import System.Directory.Internal-import System.Directory.Internal.Prelude-import System.FilePath-import Data.Time (UTCTime)-import Data.Time.Clock.POSIX-  ( posixSecondsToUTCTime-  , utcTimeToPOSIXSeconds-  , POSIXTime-  )-#ifdef mingw32_HOST_OS-import qualified System.Win32 as Win32-#else-import qualified GHC.Foreign as GHC-import qualified System.Posix as Posix-#endif--{- $intro-A directory contains a series of entries, each of which is a named-reference to a file system object (file, directory etc.).  Some-entries may be hidden, inaccessible, or have some administrative-function (e.g. @.@ or @..@ under-<http://www.opengroup.org/onlinepubs/009695399 POSIX>), but in-this standard all such entries are considered to form part of the-directory contents. Entries in sub-directories are not, however,-considered to form part of the directory contents.--Each file system object is referenced by a /path/.  There is-normally at least one absolute path to each file system object.  In-some operating systems, it may also be possible to have paths which-are relative to the current directory.--}---------------------------------------------------------------------------------- Permissions--{- $permissions-- The 'Permissions' type is used to record whether certain operations are- permissible on a file\/directory. 'getPermissions' and 'setPermissions'- get and set these permissions, respectively. Permissions apply both to- files and directories. For directories, the executable field will be- 'False', and for files the searchable field will be 'False'. Note that- directories may be searchable without being readable, if permission has- been given to use them as part of a path, but not to examine the- directory contents.--Note that to change some, but not all permissions, a construct on the following lines must be used.-->  makeReadable f = do->     p <- getPermissions f->     setPermissions f (p {readable = True})---}--data Permissions- = Permissions {-    readable,   writable,-    executable, searchable :: Bool-   } deriving (Eq, Ord, Read, Show)--emptyPermissions :: Permissions-emptyPermissions = Permissions {-                       readable   = False,-                       writable   = False,-                       executable = False,-                       searchable = False-                   }--setOwnerReadable :: Bool -> Permissions -> Permissions-setOwnerReadable b p = p { readable = b }--setOwnerWritable :: Bool -> Permissions -> Permissions-setOwnerWritable b p = p { writable = b }--setOwnerExecutable :: Bool -> Permissions -> Permissions-setOwnerExecutable b p = p { executable = b }--setOwnerSearchable :: Bool -> Permissions -> Permissions-setOwnerSearchable b p = p { searchable = b }--{- |The 'getPermissions' operation returns the-permissions for the file or directory.--The operation may fail with:--* 'isPermissionError' if the user is not permitted to access-  the permissions; or--* 'isDoesNotExistError' if the file or directory does not exist.---}--getPermissions :: FilePath -> IO Permissions-getPermissions name =-#ifdef mingw32_HOST_OS-  -- issue #9: Windows doesn't like trailing path separators-  withFilePath (dropTrailingPathSeparator name) $ \s ->-  -- stat() does a better job of guessing the permissions on Windows-  -- than access() does.  e.g. for execute permission, it looks at the-  -- filename extension :-)-  ---  -- I tried for a while to do this properly, using the Windows security API,-  -- and eventually gave up.  getPermissions is a flawed API anyway. -- SimonM-  allocaBytes sizeof_stat $ \ p_stat -> do-  throwErrnoIfMinus1_ "getPermissions" $ c_stat s p_stat-  mode <- st_mode p_stat-  let usr_read   = mode .&. s_IRUSR-  let usr_write  = mode .&. s_IWUSR-  let usr_exec   = mode .&. s_IXUSR-  let is_dir = mode .&. s_IFDIR-  return (-    Permissions {-      readable   = usr_read  /= 0,-      writable   = usr_write /= 0,-      executable = is_dir == 0 && usr_exec /= 0,-      searchable = is_dir /= 0 && usr_exec /= 0-    }-   )-#else-  do-  read_ok  <- Posix.fileAccess name True  False False-  write_ok <- Posix.fileAccess name False True  False-  exec_ok  <- Posix.fileAccess name False False True-  stat <- Posix.getFileStatus name-  let is_dir = Posix.isDirectory stat-  return (-    Permissions {-      readable   = read_ok,-      writable   = write_ok,-      executable = not is_dir && exec_ok,-      searchable = is_dir && exec_ok-    }-   )-#endif--{- |The 'setPermissions' operation sets the-permissions for the file or directory.--The operation may fail with:--* 'isPermissionError' if the user is not permitted to set-  the permissions; or--* 'isDoesNotExistError' if the file or directory does not exist.---}--setPermissions :: FilePath -> Permissions -> IO ()-setPermissions name (Permissions r w e s) =-#ifdef mingw32_HOST_OS-  allocaBytes sizeof_stat $ \ p_stat ->-  withFilePath name $ \p_name -> do-    throwErrnoIfMinus1_ "setPermissions" $-      c_stat p_name p_stat--    throwErrnoIfMinus1_ "setPermissions" $ do-      mode <- st_mode p_stat-      let mode1 = modifyBit r mode s_IRUSR-      let mode2 = modifyBit w mode1 s_IWUSR-      let mode3 = modifyBit (e || s) mode2 s_IXUSR-      c_wchmod p_name mode3- where-   modifyBit :: Bool -> CMode -> CMode -> CMode-   modifyBit False m b = m .&. (complement b)-   modifyBit True  m b = m .|. b-#else-  do-      stat <- Posix.getFileStatus name-      let mode = Posix.fileMode stat-      let mode1 = modifyBit r mode  Posix.ownerReadMode-      let mode2 = modifyBit w mode1 Posix.ownerWriteMode-      let mode3 = modifyBit (e || s) mode2 Posix.ownerExecuteMode-      Posix.setFileMode name mode3- where-   modifyBit :: Bool -> FileMode -> FileMode -> FileMode-   modifyBit False m b = m .&. (complement b)-   modifyBit True  m b = m .|. b-#endif--copyPermissions :: FilePath -> FilePath -> IO ()-copyPermissions source dest =-#ifdef mingw32_HOST_OS-  allocaBytes sizeof_stat $ \ p_stat ->-  withFilePath source $ \p_source ->-  withFilePath dest $ \p_dest -> do-    throwErrnoIfMinus1_ "copyPermissions" $ c_stat p_source p_stat-    mode <- st_mode p_stat-    throwErrnoIfMinus1_ "copyPermissions" $ c_wchmod p_dest mode-#else-  do-  stat <- Posix.getFileStatus source-  copyPermissionsFromStatus stat dest-#endif--#ifndef mingw32_HOST_OS-copyPermissionsFromStatus :: Posix.FileStatus -> FilePath -> IO ()-copyPermissionsFromStatus st dst = do-  Posix.setFileMode dst (Posix.fileMode st)-#endif---------------------------------------------------------------------------------- Implementation--{- |@'createDirectory' dir@ creates a new directory @dir@ which is-initially empty, or as near to empty as the operating system-allows.--The operation may fail with:--* 'isPermissionError' \/ 'PermissionDenied'-The process has insufficient privileges to perform the operation.-@[EROFS, EACCES]@--* 'isAlreadyExistsError' \/ 'AlreadyExists'-The operand refers to a directory that already exists.-@ [EEXIST]@--* 'HardwareFault'-A physical I\/O error has occurred.-@[EIO]@--* 'InvalidArgument'-The operand is not a valid directory name.-@[ENAMETOOLONG, ELOOP]@--* 'NoSuchThing'-There is no path to the directory.-@[ENOENT, ENOTDIR]@--* 'ResourceExhausted'-Insufficient resources (virtual memory, process file descriptors,-physical disk space, etc.) are available to perform the operation.-@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@--* 'InappropriateType'-The path refers to an existing non-directory object.-@[EEXIST]@---}--createDirectory :: FilePath -> IO ()-createDirectory path = do-#ifdef mingw32_HOST_OS-  Win32.createDirectory path Nothing-#else-  Posix.createDirectory path 0o777-#endif---- | @'createDirectoryIfMissing' parents dir@ creates a new directory--- @dir@ if it doesn\'t exist. If the first argument is 'True'--- the function will also create all parent directories if they are missing.-createDirectoryIfMissing :: Bool     -- ^ Create its parents too?-                         -> FilePath -- ^ The path to the directory you want to make-                         -> IO ()-createDirectoryIfMissing create_parents path0-  | create_parents = createDirs (parents path0)-  | otherwise      = createDirs (take 1 (parents path0))-  where-    parents = reverse . scanl1 (</>) . splitDirectories . normalise--    createDirs []         = return ()-    createDirs (dir:[])   = createDir dir ioError-    createDirs (dir:dirs) =-      createDir dir $ \_ -> do-        createDirs dirs-        createDir dir ioError--    createDir dir notExistHandler = do-      r <- tryIOError (createDirectory dir)-      case r of-        Right ()                   -> return ()-        Left  e-          | isDoesNotExistError  e -> notExistHandler e-          -- createDirectory (and indeed POSIX mkdir) does not distinguish-          -- between a dir already existing and a file already existing. So we-          -- check for it here. Unfortunately there is a slight race condition-          -- here, but we think it is benign. It could report an exeption in-          -- the case that the dir did exist but another process deletes the-          -- directory and creates a file in its place before we can check-          -- that the directory did indeed exist.-          -- We also follow this path when we get a permissions error, as-          -- trying to create "." when in the root directory on Windows-          -- fails with-          --     CreateDirectory ".": permission denied (Access is denied.)-          -- This caused GHCi to crash when loading a module in the root-          -- directory.-          | isAlreadyExistsError e-         || isPermissionError    e -> do-              canIgnore <- isDir `catchIOError` \ _ ->-                           return (isAlreadyExistsError e)-              unless canIgnore (ioError e)-          | otherwise              -> ioError e-      where-#ifdef mingw32_HOST_OS-        isDir = withFileStatus "createDirectoryIfMissing" dir isDirectory-#else-        isDir = (Posix.isDirectory <$> Posix.getFileStatus dir)-#endif---- | * @'NotDirectory'@:   not a directory.---   * @'Directory'@:      a true directory (not a symbolic link).---   * @'DirectoryLink'@:  a directory symbolic link (only exists on Windows).-data DirectoryType = NotDirectory-                   | Directory-                   | DirectoryLink-                   deriving (Enum, Eq, Ord, Read, Show)---- | Obtain the type of a directory.-getDirectoryType :: FilePath -> IO DirectoryType-getDirectoryType path =-  (`ioeAddLocation` "getDirectoryType") `modifyIOError` do-#ifdef mingw32_HOST_OS-    isDir <- withFileStatus "getDirectoryType" path isDirectory-    if isDir-      then do-        isLink <- pathIsSymbolicLink path-        if isLink-          then return DirectoryLink-          else return Directory-      else do-        return NotDirectory-#else-    stat <- Posix.getSymbolicLinkStatus path-    return $ if Posix.isDirectory stat-             then Directory-             else NotDirectory-#endif--{- | @'removeDirectory' dir@ removes an existing directory /dir/.  The-implementation may specify additional constraints which must be-satisfied before a directory can be removed (e.g. the directory has to-be empty, or may not be in use by other processes).  It is not legal-for an implementation to partially remove a directory unless the-entire directory is removed. A conformant implementation need not-support directory removal in all situations (e.g. removal of the root-directory).--The operation may fail with:--* 'HardwareFault'-A physical I\/O error has occurred.-@[EIO]@--* 'InvalidArgument'-The operand is not a valid directory name.-@[ENAMETOOLONG, ELOOP]@--* 'isDoesNotExistError' \/ 'NoSuchThing'-The directory does not exist.-@[ENOENT, ENOTDIR]@--* 'isPermissionError' \/ 'PermissionDenied'-The process has insufficient privileges to perform the operation.-@[EROFS, EACCES, EPERM]@--* 'UnsatisfiedConstraints'-Implementation-dependent constraints are not satisfied.-@[EBUSY, ENOTEMPTY, EEXIST]@--* 'UnsupportedOperation'-The implementation does not support removal in this situation.-@[EINVAL]@--* 'InappropriateType'-The operand refers to an existing non-directory object.-@[ENOTDIR]@---}--removeDirectory :: FilePath -> IO ()-removeDirectory path =-#ifdef mingw32_HOST_OS-  Win32.removeDirectory path-#else-  Posix.removeDirectory path-#endif---- | @'removeDirectoryRecursive' dir@ removes an existing directory /dir/--- together with its contents and subdirectories. Within this directory,--- symbolic links are removed without affecting their targets.------ On Windows, the operation fails if /dir/ is a directory symbolic link.-removeDirectoryRecursive :: FilePath -> IO ()-removeDirectoryRecursive path =-  (`ioeAddLocation` "removeDirectoryRecursive") `modifyIOError` do-    dirType <- getDirectoryType path-    case dirType of-      Directory ->-        removeContentsRecursive path-      DirectoryLink ->-        ioError (err `ioeSetErrorString` "is a directory symbolic link")-      NotDirectory ->-        ioError (err `ioeSetErrorString` "not a directory")-  where err = mkIOError InappropriateType "" Nothing (Just path)---- | @'removePathRecursive' path@ removes an existing file or directory at--- /path/ together with its contents and subdirectories. Symbolic links are--- removed without affecting their the targets.-removePathRecursive :: FilePath -> IO ()-removePathRecursive path =-  (`ioeAddLocation` "removePathRecursive") `modifyIOError` do-    dirType <- getDirectoryType path-    case dirType of-      NotDirectory  -> removeFile path-      Directory     -> removeContentsRecursive path-      DirectoryLink -> removeDirectory path---- | @'removeContentsRecursive' dir@ removes the contents of the directory--- /dir/ recursively. Symbolic links are removed without affecting their the--- targets.-removeContentsRecursive :: FilePath -> IO ()-removeContentsRecursive path =-  (`ioeAddLocation` "removeContentsRecursive") `modifyIOError` do-    cont <- listDirectory path-    mapM_ removePathRecursive [path </> x | x <- cont]-    removeDirectory path---- | Removes a file or directory at /path/ together with its contents and--- subdirectories. Symbolic links are removed without affecting their--- targets. If the path does not exist, nothing happens.------ Unlike other removal functions, this function will also attempt to delete--- files marked as read-only or otherwise made unremovable due to permissions.--- As a result, if the removal is incomplete, the permissions or attributes on--- the remaining files may be altered.------ If an entry within the directory vanishes while @removePathForcibly@ is--- running, it is silently ignored.------ If an exception occurs while removing an entry, @removePathForcibly@ will--- still try to remove as many entries as it can before failing with an--- exception.  The first exception that it encountered is re-thrown.------ @since 1.2.7.0-removePathForcibly :: FilePath -> IO ()-removePathForcibly path =-  (`ioeAddLocation` "removePathForcibly") `modifyIOError` do-    makeRemovable path `catchIOError` \ _ -> return ()-    ignoreDoesNotExistError $ do-      dirType <- getDirectoryType path-      case dirType of-        NotDirectory  -> removeFile path-        DirectoryLink -> removeDirectory path-        Directory     -> do-          names <- listDirectory path-          sequenceWithIOErrors_ $-            [ removePathForcibly (path </> name) | name <- names ] ++-            [ removeDirectory path ]-  where--    ignoreDoesNotExistError :: IO () -> IO ()-    ignoreDoesNotExistError action = do-      _ <- tryIOErrorType isDoesNotExistError action-      return ()--    makeRemovable :: FilePath -> IO ()-    makeRemovable p = do-      perms <- getPermissions p-      setPermissions path perms{ readable = True-                               , searchable = True-                               , writable = True }--sequenceWithIOErrors_ :: [IO ()] -> IO ()-sequenceWithIOErrors_ actions = go (Right ()) actions-  where--    go :: Either IOError () -> [IO ()] -> IO ()-    go (Left e)   []       = ioError e-    go (Right ()) []       = return ()-    go s          (m : ms) = s `seq` do-      r <- tryIOError m-      go (thenEither s r) ms--    -- equivalent to (*>) for Either, defined here to retain compatibility-    -- with base prior to 4.3-    thenEither :: Either b a -> Either b a -> Either b a-    thenEither x@(Left _) _ = x-    thenEither _          y = y--{- |'removeFile' /file/ removes the directory entry for an existing file-/file/, where /file/ is not itself a directory. The-implementation may specify additional constraints which must be-satisfied before a file can be removed (e.g. the file may not be in-use by other processes).--The operation may fail with:--* 'HardwareFault'-A physical I\/O error has occurred.-@[EIO]@--* 'InvalidArgument'-The operand is not a valid file name.-@[ENAMETOOLONG, ELOOP]@--* 'isDoesNotExistError' \/ 'NoSuchThing'-The file does not exist.-@[ENOENT, ENOTDIR]@--* 'isPermissionError' \/ 'PermissionDenied'-The process has insufficient privileges to perform the operation.-@[EROFS, EACCES, EPERM]@--* 'UnsatisfiedConstraints'-Implementation-dependent constraints are not satisfied.-@[EBUSY]@--* 'InappropriateType'-The operand refers to an existing directory.-@[EPERM, EINVAL]@---}--removeFile :: FilePath -> IO ()-removeFile path =-#ifdef mingw32_HOST_OS-  Win32.deleteFile path-#else-  Posix.removeLink path-#endif--{- |@'renameDirectory' old new@ changes the name of an existing-directory from /old/ to /new/.  If the /new/ directory-already exists, it is atomically replaced by the /old/ directory.-If the /new/ directory is neither the /old/ directory nor an-alias of the /old/ directory, it is removed as if by-'removeDirectory'.  A conformant implementation need not support-renaming directories in all situations (e.g. renaming to an existing-directory, or across different physical devices), but the constraints-must be documented.--On Win32 platforms, @renameDirectory@ fails if the /new/ directory already-exists.--The operation may fail with:--* 'HardwareFault'-A physical I\/O error has occurred.-@[EIO]@--* 'InvalidArgument'-Either operand is not a valid directory name.-@[ENAMETOOLONG, ELOOP]@--* 'isDoesNotExistError' \/ 'NoSuchThing'-The original directory does not exist, or there is no path to the target.-@[ENOENT, ENOTDIR]@--* 'isPermissionError' \/ 'PermissionDenied'-The process has insufficient privileges to perform the operation.-@[EROFS, EACCES, EPERM]@--* 'ResourceExhausted'-Insufficient resources are available to perform the operation.-@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@--* 'UnsatisfiedConstraints'-Implementation-dependent constraints are not satisfied.-@[EBUSY, ENOTEMPTY, EEXIST]@--* 'UnsupportedOperation'-The implementation does not support renaming in this situation.-@[EINVAL, EXDEV]@--* 'InappropriateType'-Either path refers to an existing non-directory object.-@[ENOTDIR, EISDIR]@---}--renameDirectory :: FilePath -> FilePath -> IO ()-renameDirectory opath npath =-   -- XXX this test isn't performed atomically with the following rename-#ifdef mingw32_HOST_OS-   -- ToDo: use Win32 API-   withFileStatus "renameDirectory" opath $ \st -> do-   is_dir <- isDirectory st-#else-   do-   stat <- Posix.getFileStatus opath-   let is_dir = Posix.fileMode stat .&. Posix.directoryMode /= 0-#endif-   when (not is_dir) $ do-     ioError . (`ioeSetErrorString` "not a directory") $-       (mkIOError InappropriateType "renameDirectory" Nothing (Just opath))-   renamePath opath npath--{- |@'renameFile' old new@ changes the name of an existing file system-object from /old/ to /new/.  If the /new/ object already-exists, it is atomically replaced by the /old/ object.  Neither-path may refer to an existing directory.  A conformant implementation-need not support renaming files in all situations (e.g. renaming-across different physical devices), but the constraints must be-documented.--The operation may fail with:--* 'HardwareFault'-A physical I\/O error has occurred.-@[EIO]@--* 'InvalidArgument'-Either operand is not a valid file name.-@[ENAMETOOLONG, ELOOP]@--* 'isDoesNotExistError' \/ 'NoSuchThing'-The original file does not exist, or there is no path to the target.-@[ENOENT, ENOTDIR]@--* 'isPermissionError' \/ 'PermissionDenied'-The process has insufficient privileges to perform the operation.-@[EROFS, EACCES, EPERM]@--* 'ResourceExhausted'-Insufficient resources are available to perform the operation.-@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@--* 'UnsatisfiedConstraints'-Implementation-dependent constraints are not satisfied.-@[EBUSY]@--* 'UnsupportedOperation'-The implementation does not support renaming in this situation.-@[EXDEV]@--* 'InappropriateType'-Either path refers to an existing directory.-@[ENOTDIR, EISDIR, EINVAL, EEXIST, ENOTEMPTY]@---}--renameFile :: FilePath -> FilePath -> IO ()-renameFile opath npath = (`ioeAddLocation` "renameFile") `modifyIOError` do-   -- XXX the tests are not performed atomically with the rename-   checkNotDir opath-   renamePath opath npath-     -- The underlying rename implementation can throw odd exceptions when the-     -- destination is a directory.  For example, Windows typically throws a-     -- permission error, while POSIX systems may throw a resource busy error-     -- if one of the paths refers to the current directory.  In these cases,-     -- we check if the destination is a directory and, if so, throw an-     -- InappropriateType error.-     `catchIOError` \ err -> do-       checkNotDir npath-       ioError err-   where checkNotDir path = do-           dirType <- getDirectoryType path-                      `catchIOError` \ _ -> return NotDirectory-           case dirType of-             Directory     -> errIsDir path-             DirectoryLink -> errIsDir path-             NotDirectory  -> return ()-         errIsDir path = ioError . (`ioeSetErrorString` "is a directory") $-                         mkIOError InappropriateType "" Nothing (Just path)---- | Rename a file or directory.  If the destination path already exists, it--- is replaced atomically.  The destination path must not point to an existing--- directory.  A conformant implementation need not support renaming files in--- all situations (e.g. renaming across different physical devices), but the--- constraints must be documented.------ The operation may fail with:------ * 'HardwareFault'--- A physical I\/O error has occurred.--- @[EIO]@------ * 'InvalidArgument'--- Either operand is not a valid file name.--- @[ENAMETOOLONG, ELOOP]@------ * 'isDoesNotExistError' \/ 'NoSuchThing'--- The original file does not exist, or there is no path to the target.--- @[ENOENT, ENOTDIR]@------ * 'isPermissionError' \/ 'PermissionDenied'--- The process has insufficient privileges to perform the operation.--- @[EROFS, EACCES, EPERM]@------ * 'ResourceExhausted'--- Insufficient resources are available to perform the operation.--- @[EDQUOT, ENOSPC, ENOMEM, EMLINK]@------ * 'UnsatisfiedConstraints'--- Implementation-dependent constraints are not satisfied.--- @[EBUSY]@------ * 'UnsupportedOperation'--- The implementation does not support renaming in this situation.--- @[EXDEV]@------ * 'InappropriateType'--- Either the destination path refers to an existing directory, or one of the--- parent segments in the destination path is not a directory.--- @[ENOTDIR, EISDIR, EINVAL, EEXIST, ENOTEMPTY]@------ @since 1.2.7.0-renamePath :: FilePath                  -- ^ Old path-           -> FilePath                  -- ^ New path-           -> IO ()-renamePath opath npath = (`ioeAddLocation` "renamePath") `modifyIOError` do-#ifdef mingw32_HOST_OS-   Win32.moveFileEx opath npath Win32.mOVEFILE_REPLACE_EXISTING-#else-   Posix.rename opath npath-#endif---- | Copy a file with its permissions.  If the destination file already exists,--- it is replaced atomically.  Neither path may refer to an existing--- directory.  No exceptions are thrown if the permissions could not be--- copied.-copyFile :: FilePath                    -- ^ Source filename-         -> FilePath                    -- ^ Destination filename-         -> IO ()-copyFile fromFPath toFPath =-  (`ioeAddLocation` "copyFile") `modifyIOError` do-    atomicCopyFileContents fromFPath toFPath-      (ignoreIOExceptions . copyPermissions fromFPath)--#ifndef mingw32_HOST_OS--- | Truncate the destination file and then copy the contents of the source--- file to the destination file.  If the destination file already exists, its--- attributes shall remain unchanged.  Otherwise, its attributes are reset to--- the defaults.-copyFileContents :: FilePath            -- ^ Source filename-                 -> FilePath            -- ^ Destination filename-                 -> IO ()-copyFileContents fromFPath toFPath =-  (`ioeAddLocation` "copyFileContents") `modifyIOError` do-    withBinaryFile toFPath WriteMode $ \ hTo ->-      copyFileToHandle fromFPath hTo-#endif---- | Copy the contents of a source file to a destination file, replacing the--- destination file atomically via 'withReplacementFile', resetting the--- attributes of the destination file to the defaults.-atomicCopyFileContents :: FilePath            -- ^ Source filename-                       -> FilePath            -- ^ Destination filename-                       -> (FilePath -> IO ()) -- ^ Post-action-                       -> IO ()-atomicCopyFileContents fromFPath toFPath postAction =-  (`ioeAddLocation` "atomicCopyFileContents") `modifyIOError` do-    withReplacementFile toFPath postAction $ \ hTo -> do-      copyFileToHandle fromFPath hTo---- | A helper function useful for replacing files in an atomic manner.  The--- function creates a temporary file in the directory of the destination file,--- opens it, performs the main action with its handle, closes it, performs the--- post-action with its path, and finally replaces the destination file with--- the temporary file.  If an error occurs during any step of this process,--- the temporary file is removed and the destination file remains untouched.-withReplacementFile :: FilePath            -- ^ Destination file-                    -> (FilePath -> IO ()) -- ^ Post-action-                    -> (Handle -> IO a)    -- ^ Main action-                    -> IO a-withReplacementFile path postAction action =-  (`ioeAddLocation` "withReplacementFile") `modifyIOError` do-    mask $ \ restore -> do-      (tmpFPath, hTmp) <- openBinaryTempFile (takeDirectory path)-                                             ".copyFile.tmp"-      (`onException` ignoreIOExceptions (removeFile tmpFPath)) $ do-        r <- (`onException` ignoreIOExceptions (hClose hTmp)) $ do-          restore (action hTmp)-        hClose hTmp-        restore (postAction tmpFPath)-        renameFile tmpFPath path-        return r---- | Attempt to perform the given action, silencing any IO exception thrown by--- it.-ignoreIOExceptions :: IO () -> IO ()-ignoreIOExceptions io = io `catchIOError` (\_ -> return ())---- | Copy all data from a file to a handle.-copyFileToHandle :: FilePath            -- ^ Source file-                 -> Handle              -- ^ Destination handle-                 -> IO ()-copyFileToHandle fromFPath hTo =-  (`ioeAddLocation` "copyFileToHandle") `modifyIOError` do-    withBinaryFile fromFPath ReadMode $ \ hFrom ->-      copyHandleData hFrom hTo---- | Copy data from one handle to another until end of file.-copyHandleData :: Handle                -- ^ Source handle-               -> Handle                -- ^ Destination handle-               -> IO ()-copyHandleData hFrom hTo =-  (`ioeAddLocation` "copyData") `modifyIOError` do-    allocaBytes bufferSize go-  where-    bufferSize = 1024-    go buffer = do-      count <- hGetBuf hFrom buffer bufferSize-      when (count > 0) $ do-        hPutBuf hTo buffer count-        go buffer---- | Copy a file with its associated metadata.  If the destination file--- already exists, it is overwritten.  There is no guarantee of atomicity in--- the replacement of the destination file.  Neither path may refer to an--- existing directory.  If the source and/or destination are symbolic links,--- the copy is performed on the targets of the links.------ On Windows, it behaves like the Win32 function--- <https://msdn.microsoft.com/en-us/library/windows/desktop/aa363851.aspx CopyFile>,--- which copies various kinds of metadata including file attributes and--- security resource properties.------ On Unix-like systems, permissions, access time, and modification time are--- preserved.  If possible, the owner and group are also preserved.  Note that--- the very act of copying can change the access time of the source file,--- hence the access times of the two files may differ after the operation--- completes.------ @since 1.2.6.0-copyFileWithMetadata :: FilePath        -- ^ Source file-                     -> FilePath        -- ^ Destination file-                     -> IO ()-copyFileWithMetadata src dst =-  (`ioeAddLocation` "copyFileWithMetadata") `modifyIOError` doCopy-  where-#ifdef mingw32_HOST_OS-    doCopy = Win32.copyFile src dst False-#else-    doCopy = do-      st <- Posix.getFileStatus src-      copyFileContents src dst-      copyMetadataFromStatus st dst-#endif--#ifndef mingw32_HOST_OS-copyMetadataFromStatus :: Posix.FileStatus -> FilePath -> IO ()-copyMetadataFromStatus st dst = do-  tryCopyOwnerAndGroupFromStatus st dst-  copyPermissionsFromStatus st dst-  copyFileTimesFromStatus st dst-#endif--#ifndef mingw32_HOST_OS-tryCopyOwnerAndGroupFromStatus :: Posix.FileStatus -> FilePath -> IO ()-tryCopyOwnerAndGroupFromStatus st dst = do-  ignoreIOExceptions (copyOwnerFromStatus st dst)-  ignoreIOExceptions (copyGroupFromStatus st dst)-#endif--#ifndef mingw32_HOST_OS-copyOwnerFromStatus :: Posix.FileStatus -> FilePath -> IO ()-copyOwnerFromStatus st dst = do-  Posix.setOwnerAndGroup dst (Posix.fileOwner st) (-1)-#endif--#ifndef mingw32_HOST_OS-copyGroupFromStatus :: Posix.FileStatus -> FilePath -> IO ()-copyGroupFromStatus st dst = do-  Posix.setOwnerAndGroup dst (-1) (Posix.fileGroup st)-#endif--#ifndef mingw32_HOST_OS-copyFileTimesFromStatus :: Posix.FileStatus -> FilePath -> IO ()-copyFileTimesFromStatus st dst = do-  let (atime, mtime) = fileTimesFromStatus st-  setFileTimes dst (Just atime, Just mtime)-#endif---- | Make a path absolute, 'normalise' the path, and remove as many--- indirections from it as possible.  Any trailing path separators are--- discarded via 'dropTrailingPathSeparator'.  Additionally, on Windows the--- letter case of the path is canonicalized.------ __Note__: This function is a very big hammer.  If you only need an absolute--- path, 'makeAbsolute' is sufficient for removing dependence on the current--- working directory.------ Indirections include the two special directories @.@ and @..@, as well as--- any symbolic links.  The input path need not point to an existing file or--- directory.  Canonicalization is performed on the longest prefix of the path--- that points to an existing file or directory.  The remaining portion of the--- path that does not point to an existing file or directory will still--- undergo 'normalise', but case canonicalization and indirection removal are--- skipped as they are impossible to do on a nonexistent path.------ Most programs should not worry about the canonicity of a path.  In--- particular, despite the name, the function does not truly guarantee--- canonicity of the returned path due to the presence of hard links, mount--- points, etc.------ If the path points to an existing file or directory, then the output path--- shall also point to the same file or directory, subject to the condition--- that the relevant parts of the file system do not change while the function--- is still running.  In other words, the function is definitively not atomic.--- The results can be utterly wrong if the portions of the path change while--- this function is running.------ Since symbolic links (and, on non-Windows systems, parent directories @..@)--- are dependent on the state of the existing filesystem, the function can--- only make a conservative attempt by removing such indirections from the--- longest prefix of the path that still points to an existing file or--- directory.------ Note that on Windows parent directories @..@ are always fully expanded--- before the symbolic links, as consistent with the rest of the Windows API--- (such as @GetFullPathName@).  In contrast, on POSIX systems parent--- directories @..@ are expanded alongside symbolic links from left to right.--- To put this more concretely: if @L@ is a symbolic link for @R/P@, then on--- Windows @L\\..@ refers to @.@, whereas on other operating systems @L/..@--- refers to @R@.------ Similar to 'normalise', passing an empty path is equivalent to passing the--- current directory.------ /Known bugs/: When the path contains an existing symbolic link, but the--- target of the link does not exist, then the path is not dereferenced (bug--- #64).  Symbolic link expansion is not performed on Windows XP or earlier--- due to the absence of @GetFinalPathNameByHandle@.------ /Changes since 1.2.3.0:/ The function has been altered to be more robust--- and has the same exception behavior as 'makeAbsolute'.------ /Changes since 1.3.0.0:/ The function no longer preserves the trailing path--- separator.  File symbolic links that appear in the middle of a path are--- properly dereferenced.  Case canonicalization and symbolic link expansion--- are now performed on Windows.----canonicalizePath :: FilePath -> IO FilePath-canonicalizePath = \ path ->-  modifyIOError ((`ioeAddLocation` "canonicalizePath") .-                 (`ioeSetFileName` path)) $-  -- normalise does more stuff, like upper-casing the drive letter-  dropTrailingPathSeparator . normalise <$>-    (transform =<< prependCurrentDirectory path)-  where--#if defined(mingw32_HOST_OS)-    transform path =-      attemptRealpath getFinalPathName =<<-        (Win32.getFullPathName path `catchIOError` \ _ -> return path)-#else-    transform path = do-      encoding <- getFileSystemEncoding-      let realpath path' =-            GHC.withCString encoding path'-              (`withRealpath` GHC.peekCString encoding)-      attemptRealpath realpath path-#endif--    attemptRealpath realpath path =-      realpathPrefix realpath (reverse (zip prefixes suffixes)) path-      where segments = splitDirectories path-            prefixes = scanl1 (</>) segments-            suffixes = tail (scanr (</>) "" segments)--    -- call realpath on the largest possible prefix-    realpathPrefix realpath ((prefix, suffix) : rest) path = do-      exist <- doesPathExist prefix-      if exist -- never call realpath on an inaccessible path-        then ((</> suffix) <$> realpath prefix)-             `catchIOError` \ _ -> realpathPrefix realpath rest path-        else realpathPrefix realpath rest path-    realpathPrefix _ _ path = return path---- | Convert a path into an absolute path.  If the given path is relative, the--- current directory is prepended and then the combined result is--- 'normalise'd.  If the path is already absolute, the path is simply--- 'normalise'd.  The function preserves the presence or absence of the--- trailing path separator unless the path refers to the root directory @/@.------ If the path is already absolute, the operation never fails.  Otherwise, the--- operation may fail with the same exceptions as 'getCurrentDirectory'.------ @since 1.2.2.0----makeAbsolute :: FilePath -> IO FilePath-makeAbsolute path =-  modifyIOError ((`ioeAddLocation` "makeAbsolute") .-                 (`ioeSetFileName` path)) $-  matchTrailingSeparator path . normalise <$> prependCurrentDirectory path---- | Convert a path into an absolute path.  If the given path is relative, the--- current directory is prepended.  If the path is already absolute, the path--- is returned unchanged.  The function preserves the presence or absence of--- the trailing path separator.------ If the path is already absolute, the operation never fails.  Otherwise, the--- operation may fail with the same exceptions as 'getCurrentDirectory'.------ (internal API)-prependCurrentDirectory :: FilePath -> IO FilePath-prependCurrentDirectory path =-  modifyIOError ((`ioeAddLocation` "prependCurrentDirectory") .-                 (`ioeSetFileName` path)) $-  if isRelative path -- avoid the call to `getCurrentDirectory` if we can-  then (</> path) <$> getCurrentDirectory-  else return path---- | Add or remove the trailing path separator in the second path so as to--- match its presence in the first path.------ (internal API)-matchTrailingSeparator :: FilePath -> FilePath -> FilePath-matchTrailingSeparator path-  | hasTrailingPathSeparator path = addTrailingPathSeparator-  | otherwise                     = dropTrailingPathSeparator---- | Construct a path relative to the current directory, similar to--- 'makeRelative'.------ The operation may fail with the same exceptions as 'getCurrentDirectory'.-makeRelativeToCurrentDirectory :: FilePath -> IO FilePath-makeRelativeToCurrentDirectory x = do-    cur <- getCurrentDirectory-    return $ makeRelative cur x---- | Given an executable file name, searches for such file in the--- directories listed in system PATH. The returned value is the path--- to the found executable or Nothing if an executable with the given--- name was not found. For example (findExecutable \"ghc\") gives you--- the path to GHC.------ The path returned by 'findExecutable' corresponds to the--- program that would be executed by 'System.Process.createProcess'--- when passed the same string (as a RawCommand, not a ShellCommand).------ On Windows, 'findExecutable' calls the Win32 function 'SearchPath',--- which may search other places before checking the directories in--- @PATH@.  Where it actually searches depends on registry settings,--- but notably includes the directory containing the current--- executable. See--- <http://msdn.microsoft.com/en-us/library/aa365527.aspx> for more--- details.----findExecutable :: String -> IO (Maybe FilePath)-findExecutable binary = do-#if defined(mingw32_HOST_OS)-    Win32.searchPath Nothing binary exeExtension-#else-    path <- getPath-    findFileWith isExecutable path (binary <.> exeExtension)-#endif---- | Given a file name, searches for the file and returns a list of all--- occurences that are executable.------ On Windows, this only returns the first ocurrence, if any.  It uses the--- @SearchPath@ from the Win32 API, so the caveats noted in 'findExecutable'--- apply here as well.------ @since 1.2.2.0-findExecutables :: String -> IO [FilePath]-findExecutables binary = do-#if defined(mingw32_HOST_OS)-    file <- findExecutable binary-    return $ maybeToList file-#else-    path <- getPath-    findExecutablesInDirectories path binary-#endif--#ifndef mingw32_HOST_OS--- | Get the contents of the @PATH@ environment variable.-getPath :: IO [FilePath]-getPath = do-    path <- getEnv "PATH"-    return (splitSearchPath path)-#endif---- | Given a file name, searches for the file on the given paths and returns a--- list of all occurences that are executable.------ @since 1.2.4.0-findExecutablesInDirectories :: [FilePath] -> String -> IO [FilePath]-findExecutablesInDirectories path binary =-    findFilesWith isExecutable path (binary <.> exeExtension)---- | Test whether a file is executable.-isExecutable :: FilePath -> IO Bool-isExecutable file = do-    perms <- getPermissions file-    return (executable perms)---- | Search through the given set of directories for the given file.-findFile :: [FilePath] -> String -> IO (Maybe FilePath)-findFile = findFileWith (\_ -> return True)---- | Search through the given set of directories for the given file and--- returns a list of paths where the given file exists.------ @since 1.2.1.0-findFiles :: [FilePath] -> String -> IO [FilePath]-findFiles = findFilesWith (\_ -> return True)---- | Search through the given set of directories for the given file and--- with the given property (usually permissions) and returns the file path--- where the given file exists and has the property.------ @since 1.2.6.0-findFileWith :: (FilePath -> IO Bool) -> [FilePath] -> String -> IO (Maybe FilePath)-findFileWith f ds name = asumMaybeT (map (findFileWithIn f name) ds)---- | 'Data.Foldable.asum' for 'Control.Monad.Trans.Maybe.MaybeT', essentially.------ Returns the first 'Just' in the list or 'Nothing' if there aren't any.-asumMaybeT :: Monad m => [m (Maybe a)] -> m (Maybe a)-asumMaybeT = foldr attempt (return Nothing)-  where-    attempt mmx mx' = do-        mx <- mmx-        case mx of-            Nothing -> mx'-            Just _  -> return mx---- | Search through the given set of directories for the given file and--- with the given property (usually permissions) and returns a list of--- paths where the given file exists and has the property.------ @since 1.2.1.0-findFilesWith :: (FilePath -> IO Bool) -> [FilePath] -> String -> IO [FilePath]-findFilesWith f ds name = do-    mfiles <- mapM (findFileWithIn f name) ds-    return (catMaybes mfiles)---- | Like 'findFileWith', but searches only a single directory.-findFileWithIn :: (FilePath -> IO Bool) -> String -> FilePath -> IO (Maybe FilePath)-findFileWithIn f name d = do-    let path = d </> name-    exist <- doesFileExist path-    if exist-        then do-            ok <- f path-            if ok-                then return (Just path)-                else return Nothing-        else return Nothing---- | Similar to 'listDirectory', but always includes the special entries (@.@--- and @..@).  (This applies to Windows as well.)------ The operation may fail with the same exceptions as 'listDirectory'.-getDirectoryContents :: FilePath -> IO [FilePath]-getDirectoryContents path =-  modifyIOError ((`ioeSetFileName` path) .-                 (`ioeAddLocation` "getDirectoryContents")) $ do-#ifndef mingw32_HOST_OS-    bracket-      (Posix.openDirStream path)-      Posix.closeDirStream-      start- where-  start dirp =-      loop id-    where-      loop acc = do-        e <- Posix.readDirStream dirp-        if null e-          then return (acc [])-          else loop (acc . (e:))-#else-  bracket-     (Win32.findFirstFile (path </> "*"))-     (\(h,_) -> Win32.findClose h)-     (\(h,fdat) -> loop h fdat [])-  where-        -- we needn't worry about empty directories: adirectory always-        -- has at least "." and ".." entries-    loop :: Win32.HANDLE -> Win32.FindData -> [FilePath] -> IO [FilePath]-    loop h fdat acc = do-       filename <- Win32.getFindDataFileName fdat-       more <- Win32.findNextFile h fdat-       if more-          then loop h fdat (filename:acc)-          else return (filename:acc)-                 -- no need to reverse, ordering is undefined-#endif /* mingw32 */---- | @'listDirectory' dir@ returns a list of /all/ entries in /dir/ without--- the special entries (@.@ and @..@).------ The operation may fail with:------ * 'HardwareFault'---   A physical I\/O error has occurred.---   @[EIO]@------ * 'InvalidArgument'---   The operand is not a valid directory name.---   @[ENAMETOOLONG, ELOOP]@------ * 'isDoesNotExistError' \/ 'NoSuchThing'---   The directory does not exist.---   @[ENOENT, ENOTDIR]@------ * 'isPermissionError' \/ 'PermissionDenied'---   The process has insufficient privileges to perform the operation.---   @[EACCES]@------ * 'ResourceExhausted'---   Insufficient resources are available to perform the operation.---   @[EMFILE, ENFILE]@------ * 'InappropriateType'---   The path refers to an existing non-directory object.---   @[ENOTDIR]@------ @since 1.2.5.0----listDirectory :: FilePath -> IO [FilePath]-listDirectory path =-  (filter f) <$> (getDirectoryContents path)-  where f filename = filename /= "." && filename /= ".."---- | Obtain the current working directory as an absolute path.------ In a multithreaded program, the current working directory is a global state--- shared among all threads of the process.  Therefore, when performing--- filesystem operations from multiple threads, it is highly recommended to--- use absolute rather than relative paths (see: 'makeAbsolute').------ The operation may fail with:------ * 'HardwareFault'--- A physical I\/O error has occurred.--- @[EIO]@------ * 'isDoesNotExistError' or 'NoSuchThing'--- There is no path referring to the working directory.--- @[EPERM, ENOENT, ESTALE...]@------ * 'isPermissionError' or 'PermissionDenied'--- The process has insufficient privileges to perform the operation.--- @[EACCES]@------ * 'ResourceExhausted'--- Insufficient resources are available to perform the operation.------ * 'UnsupportedOperation'--- The operating system has no notion of current working directory.----getCurrentDirectory :: IO FilePath-getCurrentDirectory =-  modifyIOError (`ioeAddLocation` "getCurrentDirectory") $-  specializeErrorString-    "Current working directory no longer exists"-    isDoesNotExistError-    getCwd-  where-#ifdef mingw32_HOST_OS-    getCwd = Win32.getCurrentDirectory-#else-    getCwd = Posix.getWorkingDirectory-#endif---- | Change the working directory to the given path.------ In a multithreaded program, the current working directory is a global state--- shared among all threads of the process.  Therefore, when performing--- filesystem operations from multiple threads, it is highly recommended to--- use absolute rather than relative paths (see: 'makeAbsolute').------ The operation may fail with:------ * 'HardwareFault'--- A physical I\/O error has occurred.--- @[EIO]@------ * 'InvalidArgument'--- The operand is not a valid directory name.--- @[ENAMETOOLONG, ELOOP]@------ * 'isDoesNotExistError' or 'NoSuchThing'--- The directory does not exist.--- @[ENOENT, ENOTDIR]@------ * 'isPermissionError' or 'PermissionDenied'--- The process has insufficient privileges to perform the operation.--- @[EACCES]@------ * 'UnsupportedOperation'--- The operating system has no notion of current working directory, or the--- working directory cannot be dynamically changed.------ * 'InappropriateType'--- The path refers to an existing non-directory object.--- @[ENOTDIR]@----setCurrentDirectory :: FilePath -> IO ()-setCurrentDirectory =-#ifdef mingw32_HOST_OS-  Win32.setCurrentDirectory-#else-  Posix.changeWorkingDirectory-#endif---- | Run an 'IO' action with the given working directory and restore the--- original working directory afterwards, even if the given action fails due--- to an exception.------ The operation may fail with the same exceptions as 'getCurrentDirectory'--- and 'setCurrentDirectory'.------ @since 1.2.3.0----withCurrentDirectory :: FilePath  -- ^ Directory to execute in-                     -> IO a      -- ^ Action to be executed-                     -> IO a-withCurrentDirectory dir action =-  bracket getCurrentDirectory setCurrentDirectory $ \ _ -> do-    setCurrentDirectory dir-    action---- | Obtain the size of a file in bytes.------ @since 1.2.7.0-getFileSize :: FilePath -> IO Integer-getFileSize path =-  (`ioeAddLocation` "getFileSize") `modifyIOError` do-#ifdef mingw32_HOST_OS-    fromIntegral <$> withFileStatus "" path st_size-#else-    fromIntegral . Posix.fileSize <$> Posix.getFileStatus path-#endif---- | Test whether the given path points to an existing filesystem object.  If--- the user lacks necessary permissions to search the parent directories, this--- function may return false even if the file does actually exist.------ @since 1.2.7.0-doesPathExist :: FilePath -> IO Bool-doesPathExist path =-#ifdef mingw32_HOST_OS-  (withFileStatus "" path $ \ _ -> return True)-#else-  (Posix.getFileStatus path >> return True)-#endif-  `catchIOError` \ _ -> return False--{- |The operation 'doesDirectoryExist' returns 'True' if the argument file-exists and is either a directory or a symbolic link to a directory,-and 'False' otherwise.--}--doesDirectoryExist :: FilePath -> IO Bool-doesDirectoryExist name =-#ifdef mingw32_HOST_OS-   (withFileStatus "doesDirectoryExist" name $ \st -> isDirectory st)-#else-   (do stat <- Posix.getFileStatus name-       return (Posix.isDirectory stat))-#endif-   `catchIOError` \ _ -> return False--{- |The operation 'doesFileExist' returns 'True'-if the argument file exists and is not a directory, and 'False' otherwise.--}--doesFileExist :: FilePath -> IO Bool-doesFileExist name =-#ifdef mingw32_HOST_OS-   (withFileStatus "doesFileExist" name $ \st -> do b <- isDirectory st; return (not b))-#else-   (do stat <- Posix.getFileStatus name-       return (not (Posix.isDirectory stat)))-#endif-   `catchIOError` \ _ -> return False---- | Check whether the path refers to a symbolic link.  On Windows, this tests--- for @FILE_ATTRIBUTE_REPARSE_POINT@.------ @since 1.3.0.0-pathIsSymbolicLink :: FilePath -> IO Bool-pathIsSymbolicLink path =-  (`ioeAddLocation` "getDirectoryType") `modifyIOError` do-#ifdef mingw32_HOST_OS-    isReparsePoint <$> Win32.getFileAttributes path-  where-    isReparsePoint attr = attr .&. win32_fILE_ATTRIBUTE_REPARSE_POINT /= 0-#else-    Posix.isSymbolicLink <$> Posix.getSymbolicLinkStatus path-#endif--{-# DEPRECATED isSymbolicLink "Use 'pathIsSymbolicLink' instead" #-}-isSymbolicLink :: FilePath -> IO Bool-isSymbolicLink = pathIsSymbolicLink--#ifdef mingw32_HOST_OS--- | Open the handle of an existing file or directory.-openFileHandle :: String -> Win32.AccessMode -> IO Win32.HANDLE-openFileHandle path mode = Win32.createFile path mode share Nothing-                                            Win32.oPEN_EXISTING flags Nothing-  where share =  win32_fILE_SHARE_DELETE-             .|. Win32.fILE_SHARE_READ-             .|. Win32.fILE_SHARE_WRITE-        flags =  Win32.fILE_ATTRIBUTE_NORMAL-             .|. Win32.fILE_FLAG_BACKUP_SEMANTICS -- required for directories-#endif---- | Obtain the time at which the file or directory was last accessed.------ The operation may fail with:------ * 'isPermissionError' if the user is not permitted to read---   the access time; or------ * 'isDoesNotExistError' if the file or directory does not exist.------ Caveat for POSIX systems: This function returns a timestamp with sub-second--- resolution only if this package is compiled against @unix-2.6.0.0@ or later--- and the underlying filesystem supports them.------ @since 1.2.3.0----getAccessTime :: FilePath -> IO UTCTime-getAccessTime = modifyIOError (`ioeAddLocation` "getAccessTime") .-                (fst <$>) . getFileTimes---- | Obtain the time at which the file or directory was last modified.------ The operation may fail with:------ * 'isPermissionError' if the user is not permitted to read---   the modification time; or------ * 'isDoesNotExistError' if the file or directory does not exist.------ Caveat for POSIX systems: This function returns a timestamp with sub-second--- resolution only if this package is compiled against @unix-2.6.0.0@ or later--- and the underlying filesystem supports them.----getModificationTime :: FilePath -> IO UTCTime-getModificationTime = modifyIOError (`ioeAddLocation` "getModificationTime") .-                      (snd <$>) . getFileTimes--getFileTimes :: FilePath -> IO (UTCTime, UTCTime)-getFileTimes path =-  modifyIOError (`ioeAddLocation` "getFileTimes") .-  modifyIOError (`ioeSetFileName` path) $-    getTimes-  where-    path' = normalise path              -- handle empty paths-#ifdef mingw32_HOST_OS-    getTimes =-      bracket (openFileHandle path' Win32.gENERIC_READ)-              Win32.closeHandle $ \ handle ->-      alloca $ \ atime ->-      alloca $ \ mtime -> do-        Win32.failIf_ not "" $-          Win32.c_GetFileTime handle nullPtr atime mtime-        ((,) `on` posixSecondsToUTCTime . windowsToPosixTime)-          <$> peek atime-          <*> peek mtime-#else-    getTimes = fileTimesFromStatus <$> Posix.getFileStatus path'-#endif--#ifndef mingw32_HOST_OS-fileTimesFromStatus :: Posix.FileStatus -> (UTCTime, UTCTime)-fileTimesFromStatus st =-# if MIN_VERSION_unix(2, 6, 0)-  ( posixSecondsToUTCTime (Posix.accessTimeHiRes st)-  , posixSecondsToUTCTime (Posix.modificationTimeHiRes st) )-# else-  ( posixSecondsToUTCTime (realToFrac (Posix.accessTime st))-  , posixSecondsToUTCTime (realToFrac (Posix.modificationTime st)) )-# endif-#endif---- | Change the time at which the file or directory was last accessed.------ The operation may fail with:------ * 'isPermissionError' if the user is not permitted to alter the---   access time; or------ * 'isDoesNotExistError' if the file or directory does not exist.------ Some caveats for POSIX systems:------ * Not all systems support @utimensat@, in which case the function can only---   emulate the behavior by reading the modification time and then setting---   both the access and modification times together.  On systems where---   @utimensat@ is supported, the access time is set atomically with---   nanosecond precision.------ * If compiled against a version of @unix@ prior to @2.7.0.0@, the function---   would not be able to set timestamps with sub-second resolution.  In this---   case, there would also be loss of precision in the modification time.------ @since 1.2.3.0----setAccessTime :: FilePath -> UTCTime -> IO ()-setAccessTime path atime =-  modifyIOError (`ioeAddLocation` "setAccessTime") $-    setFileTimes path (Just atime, Nothing)---- | Change the time at which the file or directory was last modified.------ The operation may fail with:------ * 'isPermissionError' if the user is not permitted to alter the---   modification time; or------ * 'isDoesNotExistError' if the file or directory does not exist.------ Some caveats for POSIX systems:------ * Not all systems support @utimensat@, in which case the function can only---   emulate the behavior by reading the access time and then setting both the---   access and modification times together.  On systems where @utimensat@ is---   supported, the modification time is set atomically with nanosecond---   precision.------ * If compiled against a version of @unix@ prior to @2.7.0.0@, the function---   would not be able to set timestamps with sub-second resolution.  In this---   case, there would also be loss of precision in the access time.------ @since 1.2.3.0----setModificationTime :: FilePath -> UTCTime -> IO ()-setModificationTime path mtime =-  modifyIOError (`ioeAddLocation` "setModificationTime") $-    setFileTimes path (Nothing, Just mtime)--setFileTimes :: FilePath -> (Maybe UTCTime, Maybe UTCTime) -> IO ()-setFileTimes _ (Nothing, Nothing) = return ()-setFileTimes path (atime, mtime) =-  modifyIOError (`ioeAddLocation` "setFileTimes") .-  modifyIOError (`ioeSetFileName` path) $-    setTimes (utcTimeToPOSIXSeconds <$> atime, utcTimeToPOSIXSeconds <$> mtime)-  where-    path' = normalise path              -- handle empty paths--    setTimes :: (Maybe POSIXTime, Maybe POSIXTime) -> IO ()-#ifdef mingw32_HOST_OS-    setTimes (atime', mtime') =-      bracket (openFileHandle path' Win32.gENERIC_WRITE)-              Win32.closeHandle $ \ handle ->-      maybeWith with (posixToWindowsTime <$> atime') $ \ atime'' ->-      maybeWith with (posixToWindowsTime <$> mtime') $ \ mtime'' ->-      Win32.failIf_ not "" $-        Win32.c_SetFileTime handle nullPtr atime'' mtime''-#elif defined HAVE_UTIMENSAT-    setTimes (atime', mtime') =-      withFilePath path' $ \ path'' ->-      withArray [ maybe utimeOmit toCTimeSpec atime'-                , maybe utimeOmit toCTimeSpec mtime' ] $ \ times ->-      throwErrnoPathIfMinus1_ "" path' $-        c_utimensat c_AT_FDCWD path'' times 0-#else-    setTimes (Just atime', Just mtime') = setFileTimes' path' atime' mtime'-    setTimes (atime', mtime') = do-      (atimeOld, mtimeOld) <- fileTimesFromStatus <$> Posix.getFileStatus path'-      setFileTimes' path'-        (fromMaybe (utcTimeToPOSIXSeconds atimeOld) atime')-        (fromMaybe (utcTimeToPOSIXSeconds mtimeOld) mtime')--    setFileTimes' :: FilePath -> POSIXTime -> POSIXTime -> IO ()-# if MIN_VERSION_unix(2, 7, 0)-    setFileTimes' = Posix.setFileTimesHiRes-#  else-    setFileTimes' pth atime' mtime' =-      Posix.setFileTimes pth-        (fromInteger (truncate atime'))-        (fromInteger (truncate mtime'))-# endif-#endif--#ifdef mingw32_HOST_OS--- | Difference between the Windows and POSIX epochs in units of 100ns.-windowsPosixEpochDifference :: Num a => a-windowsPosixEpochDifference = 116444736000000000---- | Convert from Windows time to POSIX time.-windowsToPosixTime :: Win32.FILETIME -> POSIXTime-windowsToPosixTime (Win32.FILETIME t) =-  (fromIntegral t - windowsPosixEpochDifference) / 10000000---- | Convert from POSIX time to Windows time.  This is lossy as Windows time---   has a resolution of only 100ns.-posixToWindowsTime :: POSIXTime -> Win32.FILETIME-posixToWindowsTime t = Win32.FILETIME $-  truncate (t * 10000000 + windowsPosixEpochDifference)-#endif--#ifdef mingw32_HOST_OS-withFileStatus :: String -> FilePath -> (Ptr CStat -> IO a) -> IO a-withFileStatus loc name f = do-  modifyIOError (`ioeSetFileName` name) $-    allocaBytes sizeof_stat $ \p ->-      withFilePath (fileNameEndClean name) $ \s -> do-        throwErrnoIfMinus1Retry_ loc (c_stat s p)-        f p--isDirectory :: Ptr CStat -> IO Bool-isDirectory stat = do-  mode <- st_mode stat-  return (s_isdir mode)--fileNameEndClean :: String -> String-fileNameEndClean name = if isDrive name then addTrailingPathSeparator name-                                        else dropTrailingPathSeparator name-#endif--{- | Returns the current user's home directory.--The directory returned is expected to be writable by the current user,-but note that it isn't generally considered good practice to store-application-specific data here; use 'getXdgDirectory' or-'getAppUserDataDirectory' instead.--On Unix, 'getHomeDirectory' returns the value of the @HOME@-environment variable.  On Windows, the system is queried for a-suitable path; a typical path might be @C:\/Users\//\<user\>/@.--The operation may fail with:--* 'UnsupportedOperation'-The operating system has no notion of home directory.--* 'isDoesNotExistError'-The home directory for the current user does not exist, or-cannot be found.--}-getHomeDirectory :: IO FilePath-getHomeDirectory = modifyIOError (`ioeAddLocation` "getHomeDirectory") get-  where-#if defined(mingw32_HOST_OS)-    get = getFolderPath Win32.cSIDL_PROFILE `catchIOError` \ _ ->-          getFolderPath Win32.cSIDL_WINDOWS-    getFolderPath what = Win32.sHGetFolderPath nullPtr what nullPtr 0-#else-    get = getEnv "HOME"-#endif---- | Special directories for storing user-specific application data,---   configuration, and cache files, as specified by the---   <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html XDG Base Directory Specification>.------   Note: On Windows, 'XdgData' and 'XdgConfig' map to the same directory.------   @since 1.2.3.0-data XdgDirectory-  = XdgData-    -- ^ For data files (e.g. images).-    --   Defaults to @~\/.local\/share@ and can be-    --   overridden by the @XDG_DATA_HOME@ environment variable.-    --   On Windows, it is @%APPDATA%@-    --   (e.g. @C:\/Users\//\<user\>/\/AppData\/Roaming@).-    --   Can be considered as the user-specific equivalent of @\/usr\/share@.-  | XdgConfig-    -- ^ For configuration files.-    --   Defaults to @~\/.config@ and can be-    --   overridden by the @XDG_CONFIG_HOME@ environment variable.-    --   On Windows, it is @%APPDATA%@-    --   (e.g. @C:\/Users\//\<user\>/\/AppData\/Roaming@).-    --   Can be considered as the user-specific equivalent of @\/etc@.-  | XdgCache-    -- ^ For non-essential files (e.g. cache).-    --   Defaults to @~\/.cache@ and can be-    --   overridden by the @XDG_CACHE_HOME@ environment variable.-    --   On Windows, it is @%LOCALAPPDATA%@-    --   (e.g. @C:\/Users\//\<user\>/\/AppData\/Local@).-    --   Can be considered as the user-specific equivalent of @\/var\/cache@.-  deriving (Bounded, Enum, Eq, Ord, Read, Show)---- | Obtain the paths to special directories for storing user-specific---   application data, configuration, and cache files, conforming to the---   <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html XDG Base Directory Specification>.---   Compared with 'getAppUserDataDirectory', this function provides a more---   fine-grained hierarchy as well as greater flexibility for the user.------   It also works on Windows, although in that case 'XdgData' and 'XdgConfig'---   will map to the same directory.------   The second argument is usually the name of the application.  Since it---   will be integrated into the path, it must consist of valid path---   characters.------   Note: The directory may not actually exist, in which case you would need---   to create it with file mode @700@ (i.e. only accessible by the owner).------   @since 1.2.3.0-getXdgDirectory :: XdgDirectory         -- ^ which special directory-                -> FilePath             -- ^ a relative path that is appended-                                        --   to the path; if empty, the base-                                        --   path is returned-                -> IO FilePath-getXdgDirectory xdgDir suffix =-  modifyIOError (`ioeAddLocation` "getXdgDirectory") $-  normalise . (</> suffix) <$>-  case xdgDir of-    XdgData   -> get False "XDG_DATA_HOME"   ".local/share"-    XdgConfig -> get False "XDG_CONFIG_HOME" ".config"-    XdgCache  -> get True  "XDG_CACHE_HOME"  ".cache"-  where-#if defined(mingw32_HOST_OS)-    get isLocal _ _ = Win32.sHGetFolderPath nullPtr which nullPtr 0-      where which | isLocal   = win32_cSIDL_LOCAL_APPDATA-                  | otherwise = Win32.cSIDL_APPDATA-#else-    get _ name fallback = do-      env <- lookupEnv name-      case env of-        Nothing                     -> fallback'-        Just path | isRelative path -> fallback'-                  | otherwise       -> return path-      where fallback' = (</> fallback) <$> getHomeDirectory---- | Return the value of an environment variable, or 'Nothing' if there is no---   such value.  (Equivalent to "lookupEnv" from base-4.6.)-lookupEnv :: String -> IO (Maybe String)-lookupEnv name = do-  env <- tryIOErrorType isDoesNotExistError (getEnv name)-  case env of-    Left  _     -> return Nothing-    Right value -> return (Just value)-#endif---- | Similar to 'try' but only catches a specify kind of 'IOError' as---   specified by the predicate.-tryIOErrorType :: (IOError -> Bool) -> IO a -> IO (Either IOError a)-tryIOErrorType check action = do-  result <- tryIOError action-  case result of-    Left  err -> if check err then return (Left err) else ioError err-    Right val -> return (Right val)--specializeErrorString :: String -> (IOError -> Bool) -> IO a -> IO a-specializeErrorString str errType action = do-  mx <- tryIOErrorType errType action-  case mx of-    Left  e -> ioError (ioeSetErrorString e str)-    Right x -> return x---- | Obtain the path to a special directory for storing user-specific---   application data (traditional Unix location).  Newer applications may---   prefer the the XDG-conformant location provided by 'getXdgDirectory'---   (<https://github.com/haskell/directory/issues/6#issuecomment-96521020 migration guide>).------   The argument is usually the name of the application.  Since it will be---   integrated into the path, it must consist of valid path characters.------   * On Unix-like systems, the path is @~\/./\<app\>/@.---   * On Windows, the path is @%APPDATA%\//\<app\>/@---     (e.g. @C:\/Users\//\<user\>/\/AppData\/Roaming\//\<app\>/@)------   Note: the directory may not actually exist, in which case you would need---   to create it.  It is expected that the parent directory exists and is---   writable.------   The operation may fail with:------   * 'UnsupportedOperation'---     The operating system has no notion of application-specific data---     directory.------   * 'isDoesNotExistError'---     The home directory for the current user does not exist, or cannot be---     found.----getAppUserDataDirectory :: FilePath     -- ^ a relative path that is appended-                                        --   to the path-                        -> IO FilePath-getAppUserDataDirectory appName = do-  modifyIOError (`ioeAddLocation` "getAppUserDataDirectory") $ do-#if defined(mingw32_HOST_OS)-    s <- Win32.sHGetFolderPath nullPtr Win32.cSIDL_APPDATA nullPtr 0-    return (s++'\\':appName)-#else-    path <- getEnv "HOME"-    return (path++'/':'.':appName)-#endif--{- | Returns the current user's document directory.--The directory returned is expected to be writable by the current user,-but note that it isn't generally considered good practice to store-application-specific data here; use 'getXdgDirectory' or-'getAppUserDataDirectory' instead.--On Unix, 'getUserDocumentsDirectory' returns the value of the @HOME@-environment variable.  On Windows, the system is queried for a-suitable path; a typical path might be @C:\/Users\//\<user\>/\/Documents@.--The operation may fail with:--* 'UnsupportedOperation'-The operating system has no notion of document directory.--* 'isDoesNotExistError'-The document directory for the current user does not exist, or-cannot be found.--}-getUserDocumentsDirectory :: IO FilePath-getUserDocumentsDirectory = do-  modifyIOError (`ioeAddLocation` "getUserDocumentsDirectory") $ do-#if defined(mingw32_HOST_OS)-    Win32.sHGetFolderPath nullPtr Win32.cSIDL_PERSONAL nullPtr 0-#else-    getEnv "HOME"-#endif--{- | Returns the current directory for temporary files.--On Unix, 'getTemporaryDirectory' returns the value of the @TMPDIR@-environment variable or \"\/tmp\" if the variable isn\'t defined.-On Windows, the function checks for the existence of environment variables in-the following order and uses the first path found:--*-TMP environment variable.--*-TEMP environment variable.--*-USERPROFILE environment variable.--*-The Windows directory--The operation may fail with:--* 'UnsupportedOperation'-The operating system has no notion of temporary directory.--The function doesn\'t verify whether the path exists.--}-getTemporaryDirectory :: IO FilePath-getTemporaryDirectory =-#if defined(mingw32_HOST_OS)-  Win32.getTemporaryDirectory-#else-  getEnv "TMPDIR" `catchIOError` \ err ->-  if isDoesNotExistError err then return "/tmp" else ioError err-#endif--ioeAddLocation :: IOError -> String -> IOError-ioeAddLocation e loc = do-  ioeSetLocation e newLoc-  where-    newLoc = loc <> if null oldLoc then "" else ":" <> oldLoc-    oldLoc = ioeGetLocation e+-----------------------------------------------------------------------------+-- |+-- Module      :  System.Directory+-- Copyright   :  (c) The University of Glasgow 2001+-- License     :  BSD-style (see the file libraries/base/LICENSE)+--+-- Maintainer  :  libraries@haskell.org+-- Stability   :  stable+-- Portability :  portable+--+-- System-independent interface to directory manipulation (FilePath API).+--+-----------------------------------------------------------------------------++module System.Directory+   (+    -- $intro++    -- * Actions on directories+      createDirectory+    , createDirectoryIfMissing+    , removeDirectory+    , removeDirectoryRecursive+    , removePathForcibly+    , renameDirectory+    , listDirectory+    , getDirectoryContents+    -- ** Current working directory+    , getCurrentDirectory+    , setCurrentDirectory+    , withCurrentDirectory++    -- * Pre-defined directories+    , getHomeDirectory+    , XdgDirectory(..)+    , getXdgDirectory+    , XdgDirectoryList(..)+    , getXdgDirectoryList+    , getAppUserDataDirectory+    , getUserDocumentsDirectory+    , getTemporaryDirectory++    -- * PATH+    , getExecSearchPath++    -- * Actions on files+    , removeFile+    , renameFile+    , renamePath+    , copyFile+    , copyFileWithMetadata+    , getFileSize++    , canonicalizePath+    , makeAbsolute+    , makeRelativeToCurrentDirectory++    -- * Existence tests+    , doesPathExist+    , doesFileExist+    , doesDirectoryExist++    , findExecutable+    , findExecutables+    , findExecutablesInDirectories+    , findFile+    , findFiles+    , findFileWith+    , findFilesWith+    , exeExtension++    -- * Symbolic links+    , createFileLink+    , createDirectoryLink+    , removeDirectoryLink+    , pathIsSymbolicLink+    , getSymbolicLinkTarget++    -- * Permissions++    -- $permissions++    , Permissions+    , emptyPermissions+    , readable+    , writable+    , executable+    , searchable+    , setOwnerReadable+    , setOwnerWritable+    , setOwnerExecutable+    , setOwnerSearchable++    , getPermissions+    , setPermissions+    , copyPermissions++    -- * Timestamps++    , getAccessTime+    , getModificationTime+    , setAccessTime+    , setModificationTime++    -- * Deprecated+    , isSymbolicLink++   ) where+import Prelude ()+import System.Directory.Internal+import System.Directory.Internal.Prelude+import Data.Time (UTCTime)+import System.OsPath (decodeFS, encodeFS)+import qualified System.Directory.OsPath as D++{- $intro+A directory contains a series of entries, each of which is a named+reference to a file system object (file, directory etc.).  Some+entries may be hidden, inaccessible, or have some administrative+function (e.g. @.@ or @..@ under+<http://www.opengroup.org/onlinepubs/009695399 POSIX>), but in+this standard all such entries are considered to form part of the+directory contents. Entries in sub-directories are not, however,+considered to form part of the directory contents.++Each file system object is referenced by a /path/.  There is+normally at least one absolute path to each file system object.  In+some operating systems, it may also be possible to have paths which+are relative to the current directory.++Unless otherwise documented:++* 'IO' operations in this package may throw any 'IOError'.  No other types of+  exceptions shall be thrown.++* The list of possible 'IOErrorType's in the API documentation is not+  exhaustive.  The full list may vary by platform and/or evolve over time.++-}++-----------------------------------------------------------------------------+-- Permissions++{- $permissions++directory offers a limited (and quirky) interface for reading and setting file+and directory permissions; see 'getPermissions' and 'setPermissions' for a+discussion of their limitations.  Because permissions are very difficult to+implement portably across different platforms, users who wish to do more+sophisticated things with permissions are advised to use other,+platform-specific libraries instead.  For example, if you are only interested+in permissions on POSIX-like platforms,+<https://hackage.haskell.org/package/unix/docs/System-Posix-Files.html unix>+offers much more flexibility.++ The 'Permissions' type is used to record whether certain operations are+ permissible on a file\/directory. 'getPermissions' and 'setPermissions'+ get and set these permissions, respectively. Permissions apply both to+ files and directories. For directories, the executable field will be+ 'False', and for files the searchable field will be 'False'. Note that+ directories may be searchable without being readable, if permission has+ been given to use them as part of a path, but not to examine the+ directory contents.++Note that to change some, but not all permissions, a construct on the+following lines must be used.++>  makeReadable f = do+>     p <- getPermissions f+>     setPermissions f (p {readable = True})++-}++emptyPermissions :: Permissions+emptyPermissions = Permissions {+                       readable   = False,+                       writable   = False,+                       executable = False,+                       searchable = False+                   }++setOwnerReadable :: Bool -> Permissions -> Permissions+setOwnerReadable b p = p { readable = b }++setOwnerWritable :: Bool -> Permissions -> Permissions+setOwnerWritable b p = p { writable = b }++setOwnerExecutable :: Bool -> Permissions -> Permissions+setOwnerExecutable b p = p { executable = b }++setOwnerSearchable :: Bool -> Permissions -> Permissions+setOwnerSearchable b p = p { searchable = b }++-- | Get the permissions of a file or directory.+--+-- On Windows, the 'writable' permission corresponds to the "read-only"+-- attribute.  The 'executable' permission is set if the file extension is of+-- an executable file type.  The 'readable' permission is always set.+--+-- On POSIX systems, this returns the result of @access@.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to access the+--   permissions, or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+getPermissions :: FilePath -> IO Permissions+getPermissions = encodeFS >=> D.getPermissions++-- | Set the permissions of a file or directory.+--+-- On Windows, this is only capable of changing the 'writable' permission,+-- which corresponds to the "read-only" attribute.  Changing the other+-- permissions has no effect.+--+-- On POSIX systems, this sets the /owner/ permissions.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to set the permissions,+--   or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+setPermissions :: FilePath -> Permissions -> IO ()+setPermissions path p = encodeFS path >>= (`D.setPermissions` p)++-- | Copy the permissions of one file to another.  This reproduces the+-- permissions more accurately than using 'getPermissions' followed by+-- 'setPermissions'.+--+-- On Windows, this copies only the read-only attribute.+--+-- On POSIX systems, this is equivalent to @stat@ followed by @chmod@.+copyPermissions :: FilePath -> FilePath -> IO ()+copyPermissions src dst = do+  src' <- encodeFS src+  dst' <- encodeFS dst+  D.copyPermissions src' dst'+++-----------------------------------------------------------------------------+-- Implementation++{- |@'createDirectory' dir@ creates a new directory @dir@ which is+initially empty, or as near to empty as the operating system+allows.++The operation may fail with:++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES]@++* 'isAlreadyExistsError'+The operand refers to a directory that already exists.+@ [EEXIST]@++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+The operand is not a valid directory name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+There is no path to the directory.+@[ENOENT, ENOTDIR]@++* 'System.IO.isFullError'+Insufficient resources (virtual memory, process file descriptors,+physical disk space, etc.) are available to perform the operation.+@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@++* @InappropriateType@+The path refers to an existing non-directory object.+@[EEXIST]@++-}++createDirectory :: FilePath -> IO ()+createDirectory = encodeFS >=> D.createDirectory++-- | @'createDirectoryIfMissing' parents dir@ creates a new directory+-- @dir@ if it doesn\'t exist. If the first argument is 'True'+-- the function will also create all parent directories if they are missing.+createDirectoryIfMissing+  :: Bool     -- ^ Create its parents too?+  -> FilePath -- ^ The path to the directory you want to make+  -> IO ()+createDirectoryIfMissing cp = encodeFS >=> D.createDirectoryIfMissing cp+++{- | @'removeDirectory' dir@ removes an existing directory /dir/.  The+implementation may specify additional constraints which must be+satisfied before a directory can be removed (e.g. the directory has to+be empty, or may not be in use by other processes).  It is not legal+for an implementation to partially remove a directory unless the+entire directory is removed. A conformant implementation need not+support directory removal in all situations (e.g. removal of the root+directory).++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+The operand is not a valid directory name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The directory does not exist.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY, ENOTEMPTY, EEXIST]@++* @UnsupportedOperation@+The implementation does not support removal in this situation.+@[EINVAL]@++* @InappropriateType@+The operand refers to an existing non-directory object.+@[ENOTDIR]@++-}++removeDirectory :: FilePath -> IO ()+removeDirectory = encodeFS >=> D.removeDirectory++-- | @'removeDirectoryRecursive' dir@ removes an existing directory /dir/+-- together with its contents and subdirectories. Within this directory,+-- symbolic links are removed without affecting their targets.+--+-- On Windows, the operation fails if /dir/ is a directory symbolic link.+--+-- This operation is reported to be flaky on Windows so retry logic may+-- be advisable. See: https://github.com/haskell/directory/pull/108+removeDirectoryRecursive :: FilePath -> IO ()+removeDirectoryRecursive = encodeFS >=> D.removeDirectoryRecursive++-- | Removes a file or directory at /path/ together with its contents and+-- subdirectories. Symbolic links are removed without affecting their+-- targets. If the path does not exist, nothing happens.+--+-- Unlike other removal functions, this function will also attempt to delete+-- files marked as read-only or otherwise made unremovable due to permissions.+-- As a result, if the removal is incomplete, the permissions or attributes on+-- the remaining files may be altered.  If there are hard links in the+-- directory, then permissions on all related hard links may be altered.+--+-- If an entry within the directory vanishes while @removePathForcibly@ is+-- running, it is silently ignored.+--+-- If an exception occurs while removing an entry, @removePathForcibly@ will+-- still try to remove as many entries as it can before failing with an+-- exception.  The first exception that it encountered is re-thrown.+--+-- @since 1.2.7.0+removePathForcibly :: FilePath -> IO ()+removePathForcibly = encodeFS >=> D.removePathForcibly++{- |'removeFile' /file/ removes the directory entry for an existing file+/file/, where /file/ is not itself a directory. The+implementation may specify additional constraints which must be+satisfied before a file can be removed (e.g. the file may not be in+use by other processes).++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+The operand is not a valid file name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The file does not exist.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY]@++* @InappropriateType@+The operand refers to an existing directory.+@[EPERM, EINVAL]@++-}++removeFile :: FilePath -> IO ()+removeFile = encodeFS >=> D.removeFile++{- |@'renameDirectory' old new@ changes the name of an existing+directory from /old/ to /new/.  If the /new/ directory+already exists, it is atomically replaced by the /old/ directory.+If the /new/ directory is neither the /old/ directory nor an+alias of the /old/ directory, it is removed as if by+'removeDirectory'.  A conformant implementation need not support+renaming directories in all situations (e.g. renaming to an existing+directory, or across different physical devices), but the constraints+must be documented.++On Win32 platforms, @renameDirectory@ fails if the /new/ directory already+exists.++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+Either operand is not a valid directory name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The original directory does not exist, or there is no path to the target.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* 'System.IO.isFullError'+Insufficient resources are available to perform the operation.+@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY, ENOTEMPTY, EEXIST]@++* @UnsupportedOperation@+The implementation does not support renaming in this situation.+@[EINVAL, EXDEV]@++* @InappropriateType@+Either path refers to an existing non-directory object.+@[ENOTDIR, EISDIR]@++-}++renameDirectory :: FilePath -> FilePath -> IO ()+renameDirectory opath npath = do+  opath' <- encodeFS opath+  npath' <- encodeFS npath+  D.renameDirectory opath' npath'++{- |@'renameFile' old new@ changes the name of an existing file system+object from /old/ to /new/.  If the /new/ object already exists, it is+replaced by the /old/ object.  Neither path may refer to an existing+directory.++A conformant implementation need not support renaming files in all situations+(e.g. renaming across different physical devices), but the constraints must be+documented. On Windows, this does not support renaming across different physical+devices; if you are looking to do so, consider using 'copyFileWithMetadata' and+'removeFile'.++On Windows, this calls @MoveFileEx@ with @MOVEFILE_REPLACE_EXISTING@ set,+which is not guaranteed to be atomic+(<https://github.com/haskell/directory/issues/109>).++On other platforms, this operation is atomic.++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+Either operand is not a valid file name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The original file does not exist, or there is no path to the target.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* 'System.IO.isFullError'+Insufficient resources are available to perform the operation.+@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY]@++* @UnsupportedOperation@+The implementation does not support renaming in this situation.+@[EXDEV]@++* @InappropriateType@+Either path refers to an existing directory.+@[ENOTDIR, EISDIR, EINVAL, EEXIST, ENOTEMPTY]@++-}++renameFile :: FilePath -> FilePath -> IO ()+renameFile opath npath = do+  opath' <- encodeFS opath+  npath' <- encodeFS npath+  D.renameFile opath' npath'++-- | Rename a file or directory.  If the destination path already exists, it+-- is replaced atomically.  The destination path must not point to an existing+-- directory.  A conformant implementation need not support renaming files in+-- all situations (e.g. renaming across different physical devices), but the+-- constraints must be documented.+--+-- The operation may fail with:+--+-- * @HardwareFault@+-- A physical I\/O error has occurred.+-- @[EIO]@+--+-- * @InvalidArgument@+-- Either operand is not a valid file name.+-- @[ENAMETOOLONG, ELOOP]@+--+-- * 'isDoesNotExistError'+-- The original file does not exist, or there is no path to the target.+-- @[ENOENT, ENOTDIR]@+--+-- * 'isPermissionError'+-- The process has insufficient privileges to perform the operation.+-- @[EROFS, EACCES, EPERM]@+--+-- * 'System.IO.isFullError'+-- Insufficient resources are available to perform the operation.+-- @[EDQUOT, ENOSPC, ENOMEM, EMLINK]@+--+-- * @UnsatisfiedConstraints@+-- Implementation-dependent constraints are not satisfied.+-- @[EBUSY]@+--+-- * @UnsupportedOperation@+-- The implementation does not support renaming in this situation.+-- @[EXDEV]@+--+-- * @InappropriateType@+-- Either the destination path refers to an existing directory, or one of the+-- parent segments in the destination path is not a directory.+-- @[ENOTDIR, EISDIR, EINVAL, EEXIST, ENOTEMPTY]@+--+-- @since 1.2.7.0+renamePath :: FilePath                  -- ^ Old path+           -> FilePath                  -- ^ New path+           -> IO ()+renamePath opath npath = do+  opath' <- encodeFS opath+  npath' <- encodeFS npath+  D.renamePath opath' npath'++-- | Copy a file with its permissions.  If the destination file already exists,+-- it is replaced atomically.  Neither path may refer to an existing+-- directory.  No exceptions are thrown if the permissions could not be+-- copied.+copyFile :: FilePath                    -- ^ Source filename+         -> FilePath                    -- ^ Destination filename+         -> IO ()+copyFile fromFPath toFPath = do+  fromFPath' <- encodeFS fromFPath+  toFPath' <- encodeFS toFPath+  D.copyFile fromFPath' toFPath'++-- | Copy a file with its associated metadata.  If the destination file+-- already exists, it is overwritten.  There is no guarantee of atomicity in+-- the replacement of the destination file.  Neither path may refer to an+-- existing directory.  If the source and/or destination are symbolic links,+-- the copy is performed on the targets of the links.+--+-- On Windows, it behaves like the Win32 function+-- <https://msdn.microsoft.com/en-us/library/windows/desktop/aa363851.aspx CopyFile>,+-- which copies various kinds of metadata including file attributes and+-- security resource properties.+--+-- On Unix-like systems, permissions, access time, and modification time are+-- preserved.  If possible, the owner and group are also preserved.  Note that+-- the very act of copying can change the access time of the source file,+-- hence the access times of the two files may differ after the operation+-- completes.+--+-- @since 1.2.6.0+copyFileWithMetadata :: FilePath        -- ^ Source file+                     -> FilePath        -- ^ Destination file+                     -> IO ()+copyFileWithMetadata src dst = do+  src' <- encodeFS src+  dst' <- encodeFS dst+  D.copyFileWithMetadata src' dst'+++-- | Make a path absolute, normalize the path, and remove as many indirections+-- from it as possible.  Any trailing path separators are discarded via+-- 'dropTrailingPathSeparator'.  Additionally, on Windows the letter case of+-- the path is canonicalized.+--+-- __Note__: This function is a very big hammer.  If you only need an absolute+-- path, 'makeAbsolute' is sufficient for removing dependence on the current+-- working directory.+--+-- Indirections include the two special directories @.@ and @..@, as well as+-- any symbolic links (and junction points on Windows).  The input path need+-- not point to an existing file or directory.  Canonicalization is performed+-- on the longest prefix of the path that points to an existing file or+-- directory.  The remaining portion of the path that does not point to an+-- existing file or directory will still be normalized, but case+-- canonicalization and indirection removal are skipped as they are impossible+-- to do on a nonexistent path.+--+-- Most programs should not worry about the canonicity of a path.  In+-- particular, despite the name, the function does not truly guarantee+-- canonicity of the returned path due to the presence of hard links, mount+-- points, etc.+--+-- If the path points to an existing file or directory, then the output path+-- shall also point to the same file or directory, subject to the condition+-- that the relevant parts of the file system do not change while the function+-- is still running.  In other words, the function is definitively not atomic.+-- The results can be utterly wrong if the portions of the path change while+-- this function is running.+--+-- Since some indirections (symbolic links on all systems, @..@ on non-Windows+-- systems, and junction points on Windows) are dependent on the state of the+-- existing filesystem, the function can only make a conservative attempt by+-- removing such indirections from the longest prefix of the path that still+-- points to an existing file or directory.+--+-- Note that on Windows parent directories @..@ are always fully expanded+-- before the symbolic links, as consistent with the rest of the Windows API+-- (such as @GetFullPathName@).  In contrast, on POSIX systems parent+-- directories @..@ are expanded alongside symbolic links from left to right.+-- To put this more concretely: if @L@ is a symbolic link for @R/P@, then on+-- Windows @L\\..@ refers to @.@, whereas on other operating systems @L/..@+-- refers to @R@.+--+-- Similar to 'System.FilePath.normalise', passing an empty path is equivalent+-- to passing the current directory.+--+-- @canonicalizePath@ can resolve at least 64 indirections in a single path,+-- more than what is supported by most operating systems.  Therefore, it may+-- return the fully resolved path even though the operating system itself+-- would have long given up.+--+-- On Windows XP or earlier systems, junction expansion is not performed due+-- to their lack of @GetFinalPathNameByHandle@.+--+-- /Changes since 1.2.3.0:/ The function has been altered to be more robust+-- and has the same exception behavior as 'makeAbsolute'.+--+-- /Changes since 1.3.0.0:/ The function no longer preserves the trailing path+-- separator.  File symbolic links that appear in the middle of a path are+-- properly dereferenced.  Case canonicalization and symbolic link expansion+-- are now performed on Windows.+--+canonicalizePath :: FilePath -> IO FilePath+canonicalizePath = encodeFS >=> D.canonicalizePath >=> decodeFS++-- | Convert a path into an absolute path.  If the given path is relative, the+-- current directory is prepended and then the combined result is normalized.+-- If the path is already absolute, the path is simply normalized.  The+-- function preserves the presence or absence of the trailing path separator+-- unless the path refers to the root directory @/@.+--+-- If the path is already absolute, the operation never fails.  Otherwise, the+-- operation may fail with the same exceptions as 'getCurrentDirectory'.+--+-- @since 1.2.2.0+--+makeAbsolute :: FilePath -> IO FilePath+makeAbsolute = encodeFS >=> D.makeAbsolute >=> decodeFS++-- | Construct a path relative to the current directory, similar to+-- 'makeRelative'.+--+-- The operation may fail with the same exceptions as 'getCurrentDirectory'.+makeRelativeToCurrentDirectory :: FilePath -> IO FilePath+makeRelativeToCurrentDirectory =+  encodeFS >=> D.makeRelativeToCurrentDirectory >=> decodeFS++-- | Given the name or path of an executable file, 'findExecutable' searches+-- for such a file in a list of system-defined locations, which generally+-- includes @PATH@ and possibly more.  The full path to the executable is+-- returned if found.  For example, @(findExecutable \"ghc\")@ would normally+-- give you the path to GHC.+--+-- The path returned by @'findExecutable' name@ corresponds to the program+-- that would be executed by+-- @<http://hackage.haskell.org/package/process/docs/System-Process.html#v:createProcess createProcess>@+-- when passed the same string (as a @RawCommand@, not a @ShellCommand@),+-- provided that @name@ is not a relative path with more than one segment.+--+-- On Windows, 'findExecutable' calls the Win32 function+-- @<https://msdn.microsoft.com/en-us/library/aa365527.aspx SearchPath>@,+-- which may search other places before checking the directories in the @PATH@+-- environment variable.  Where it actually searches depends on registry+-- settings, but notably includes the directory containing the current+-- executable.+--+-- On non-Windows platforms, the behavior is equivalent to 'findFileWith'+-- using the search directories from the @PATH@ environment variable and+-- testing each file for executable permissions.  Details can be found in the+-- documentation of 'findFileWith'.+findExecutable :: String -> IO (Maybe FilePath)+findExecutable = encodeFS >=> D.findExecutable >=> (`for` decodeFS)++-- | Search for executable files in a list of system-defined locations, which+-- generally includes @PATH@ and possibly more.+--+-- On Windows, this /only returns the first occurrence/, if any.  Its behavior+-- is therefore equivalent to 'findExecutable'.+--+-- On non-Windows platforms, the behavior is equivalent to+-- 'findExecutablesInDirectories' using the search directories from the @PATH@+-- environment variable.  Details can be found in the documentation of+-- 'findExecutablesInDirectories'.+--+-- @since 1.2.2.0+findExecutables :: String -> IO [FilePath]+findExecutables = encodeFS >=> D.findExecutables >=> (`for` decodeFS)++-- | Given a name or path, 'findExecutable' appends the 'exeExtension' to the+-- query and searches for executable files in the list of given search+-- directories and returns all occurrences.+--+-- The behavior is equivalent to 'findFileWith' using the given search+-- directories and testing each file for executable permissions.  Details can+-- be found in the documentation of 'findFileWith'.+--+-- Unlike other similarly named functions, 'findExecutablesInDirectories' does+-- not use @SearchPath@ from the Win32 API.  The behavior of this function on+-- Windows is therefore equivalent to those on non-Windows platforms.+--+-- @since 1.2.4.0+findExecutablesInDirectories :: [FilePath] -> String -> IO [FilePath]+findExecutablesInDirectories path binary = do+  path' <- for path encodeFS+  binary' <- encodeFS binary+  D.findExecutablesInDirectories path' binary'+    >>= (`for` decodeFS)++-- | Search through the given list of directories for the given file.+--+-- The behavior is equivalent to 'findFileWith', returning only the first+-- occurrence.  Details can be found in the documentation of 'findFileWith'.+findFile :: [FilePath] -> String -> IO (Maybe FilePath)+findFile = findFileWith (\ _ -> pure True)++-- | Search through the given list of directories for the given file and+-- returns all paths where the given file exists.+--+-- The behavior is equivalent to 'findFilesWith'.  Details can be found in the+-- documentation of 'findFilesWith'.+--+-- @since 1.2.1.0+findFiles :: [FilePath] -> String -> IO [FilePath]+findFiles = findFilesWith (\ _ -> pure True)++-- | Search through a given list of directories for a file that has the given+-- name and satisfies the given predicate and return the path of the first+-- occurrence.  The directories are checked in a left-to-right order.+--+-- This is essentially a more performant version of 'findFilesWith' that+-- always returns the first result, if any.  Details can be found in the+-- documentation of 'findFilesWith'.+--+-- @since 1.2.6.0+findFileWith+  :: (FilePath -> IO Bool) -> [FilePath] -> String -> IO (Maybe FilePath)+findFileWith f ds name = do+  ds' <- for ds encodeFS+  name' <- encodeFS name+  D.findFileWith (decodeFS >=> f) ds' name'+    >>= (`for` decodeFS)++-- | @findFilesWith predicate dirs name@ searches through the list of+-- directories (@dirs@) for files that have the given @name@ and satisfy the+-- given @predicate@ and returns the paths of those files.  The directories+-- are checked in a left-to-right order and the paths are returned in the same+-- order.+--+-- If the @name@ is a relative path, then for every search directory @dir@,+-- the function checks whether @dir '</>' name@ exists and satisfies the+-- predicate.  If so, @dir '</>' name@ is returned as one of the results.  In+-- other words, the returned paths can be either relative or absolute+-- depending on the search directories were used.  If there are no search+-- directories, no results are ever returned.+--+-- If the @name@ is an absolute path, then the function will return a single+-- result if the file exists and satisfies the predicate and no results+-- otherwise.  This is irrespective of what search directories were given.+--+-- @since 1.2.1.0+findFilesWith :: (FilePath -> IO Bool) -> [FilePath] -> String -> IO [FilePath]+findFilesWith f ds name = do+  ds' <- for ds encodeFS+  name' <- encodeFS name+  res <- D.findFilesWith (decodeFS >=> f) ds' name'+  for res decodeFS++-- | Filename extension for executable files (including the dot if any)+--   (usually @\"\"@ on POSIX systems and @\".exe\"@ on Windows or OS\/2).+--+-- @since 1.2.4.0+exeExtension :: String+exeExtension = so D.exeExtension++-- | Similar to 'listDirectory', but always includes the special entries (@.@+-- and @..@).  (This applies to Windows as well.)+--+-- The operation may fail with the same exceptions as 'listDirectory'.+getDirectoryContents :: FilePath -> IO [FilePath]+getDirectoryContents = encodeFS >=> D.getDirectoryContents >=> (`for` decodeFS)++-- | @'listDirectory' dir@ returns a list of /all/ entries in /dir/ without+-- the special entries (@.@ and @..@).+--+-- The operation may fail with:+--+-- * @HardwareFault@+--   A physical I\/O error has occurred.+--   @[EIO]@+--+-- * @InvalidArgument@+--   The operand is not a valid directory name.+--   @[ENAMETOOLONG, ELOOP]@+--+-- * 'isDoesNotExistError'+--   The directory does not exist.+--   @[ENOENT, ENOTDIR]@+--+-- * 'isPermissionError'+--   The process has insufficient privileges to perform the operation.+--   @[EACCES]@+--+-- * 'System.IO.isFullError'+--   Insufficient resources are available to perform the operation.+--   @[EMFILE, ENFILE]@+--+-- * @InappropriateType@+--   The path refers to an existing non-directory object.+--   @[ENOTDIR]@+--+-- @since 1.2.5.0+--+listDirectory :: FilePath -> IO [FilePath]+listDirectory = encodeFS >=> D.listDirectory >=> (`for` decodeFS)++-- | Obtain the current working directory as an absolute path.+--+-- In a multithreaded program, the current working directory is a global state+-- shared among all threads of the process.  Therefore, when performing+-- filesystem operations from multiple threads, it is highly recommended to+-- use absolute rather than relative paths (see: 'makeAbsolute').+--+-- Note that 'getCurrentDirectory' is not guaranteed to return the same path+-- received by 'setCurrentDirectory'. On POSIX systems, the path returned will+-- always be fully dereferenced (not contain any symbolic links). For more+-- information, refer to the documentation of+-- <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html getcwd>.+--+-- The operation may fail with:+--+-- * @HardwareFault@+-- A physical I\/O error has occurred.+-- @[EIO]@+--+-- * 'isDoesNotExistError'+-- There is no path referring to the working directory.+-- @[EPERM, ENOENT, ESTALE...]@+--+-- * 'isPermissionError'+-- The process has insufficient privileges to perform the operation.+-- @[EACCES]@+--+-- * 'System.IO.isFullError'+-- Insufficient resources are available to perform the operation.+--+-- * @UnsupportedOperation@+-- The operating system has no notion of current working directory.+--+getCurrentDirectory :: IO FilePath+getCurrentDirectory = D.getCurrentDirectory >>= decodeFS++-- | Change the working directory to the given path.+--+-- In a multithreaded program, the current working directory is a global state+-- shared among all threads of the process.  Therefore, when performing+-- filesystem operations from multiple threads, it is highly recommended to+-- use absolute rather than relative paths (see: 'makeAbsolute').+--+-- The operation may fail with:+--+-- * @HardwareFault@+-- A physical I\/O error has occurred.+-- @[EIO]@+--+-- * @InvalidArgument@+-- The operand is not a valid directory name.+-- @[ENAMETOOLONG, ELOOP]@+--+-- * 'isDoesNotExistError'+-- The directory does not exist.+-- @[ENOENT, ENOTDIR]@+--+-- * 'isPermissionError'+-- The process has insufficient privileges to perform the operation.+-- @[EACCES]@+--+-- * @UnsupportedOperation@+-- The operating system has no notion of current working directory, or the+-- working directory cannot be dynamically changed.+--+-- * @InappropriateType@+-- The path refers to an existing non-directory object.+-- @[ENOTDIR]@+--+setCurrentDirectory :: FilePath -> IO ()+setCurrentDirectory = encodeFS >=> D.setCurrentDirectory++-- | Run an 'IO' action with the given working directory and restore the+-- original working directory afterwards, even if the given action fails due+-- to an exception.+--+-- The operation may fail with the same exceptions as 'getCurrentDirectory'+-- and 'setCurrentDirectory'.+--+-- @since 1.2.3.0+--+withCurrentDirectory :: FilePath  -- ^ Directory to execute in+                     -> IO a      -- ^ Action to be executed+                     -> IO a+withCurrentDirectory dir action =+  encodeFS dir >>= (`D.withCurrentDirectory` action)++-- | Obtain the size of a file in bytes.+--+-- @since 1.2.7.0+getFileSize :: FilePath -> IO Integer+getFileSize = encodeFS >=> D.getFileSize++-- | Test whether the given path points to an existing filesystem object.  If+-- the user lacks necessary permissions to search the parent directories, this+-- function may return false even if the file does actually exist.+--+-- @since 1.2.7.0+doesPathExist :: FilePath -> IO Bool+doesPathExist = encodeFS >=> D.doesPathExist++{- |The operation 'doesDirectoryExist' returns 'True' if the argument file+exists and is either a directory or a symbolic link to a directory,+and 'False' otherwise.+-}++doesDirectoryExist :: FilePath -> IO Bool+doesDirectoryExist = encodeFS >=> D.doesDirectoryExist++{- |The operation 'doesFileExist' returns 'True'+if the argument file exists and is not a directory, and 'False' otherwise.+-}++doesFileExist :: FilePath -> IO Bool+doesFileExist = encodeFS >=> D.doesFileExist+++-- | Create a /file/ symbolic link.  The target path can be either absolute or+-- relative and need not refer to an existing file.  The order of arguments+-- follows the POSIX convention.+--+-- To remove an existing file symbolic link, use 'removeFile'.+--+-- Although the distinction between /file/ symbolic links and /directory/+-- symbolic links does not exist on POSIX systems, on Windows this is an+-- intrinsic property of every symbolic link and cannot be changed without+-- recreating the link.  A file symbolic link that actually points to a+-- directory will fail to dereference and vice versa.  Moreover, creating+-- symbolic links on Windows may require privileges unavailable to users+-- outside the Administrators group.  Portable programs that use symbolic+-- links should take both into consideration.+--+-- On Windows, the function is implemented using @CreateSymbolicLink@.  Since+-- 1.3.3.0, the @SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE@ flag is included+-- if supported by the operating system.  On POSIX, the function uses @symlink@+-- and is therefore atomic.+--+-- Windows-specific errors: This operation may fail with 'permissionErrorType'+-- if the user lacks the privileges to create symbolic links.  It may also+-- fail with 'illegalOperationErrorType' if the file system does not support+-- symbolic links.+--+-- @since 1.3.1.0+createFileLink+  :: FilePath                           -- ^ path to the target file+  -> FilePath                           -- ^ path of the link to be created+  -> IO ()+createFileLink target link = do+  target' <- encodeFS target+  link' <- encodeFS link+  D.createFileLink target' link'+++-- | Create a /directory/ symbolic link.  The target path can be either+-- absolute or relative and need not refer to an existing directory.  The+-- order of arguments follows the POSIX convention.+--+-- To remove an existing directory symbolic link, use 'removeDirectoryLink'.+--+-- Although the distinction between /file/ symbolic links and /directory/+-- symbolic links does not exist on POSIX systems, on Windows this is an+-- intrinsic property of every symbolic link and cannot be changed without+-- recreating the link.  A file symbolic link that actually points to a+-- directory will fail to dereference and vice versa.  Moreover, creating+-- symbolic links on Windows may require privileges unavailable to users+-- outside the Administrators group.  Portable programs that use symbolic+-- links should take both into consideration.+--+-- On Windows, the function is implemented using @CreateSymbolicLink@ with+-- @SYMBOLIC_LINK_FLAG_DIRECTORY@.  Since 1.3.3.0, the+-- @SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE@ flag is also included if+-- supported by the operating system.   On POSIX, this is an alias for+-- 'createFileLink' and is therefore atomic.+--+-- Windows-specific errors: This operation may fail with 'permissionErrorType'+-- if the user lacks the privileges to create symbolic links.  It may also+-- fail with 'illegalOperationErrorType' if the file system does not support+-- symbolic links.+--+-- @since 1.3.1.0+createDirectoryLink+  :: FilePath                           -- ^ path to the target directory+  -> FilePath                           -- ^ path of the link to be created+  -> IO ()+createDirectoryLink target link = do+  target' <- encodeFS target+  link' <- encodeFS link+  D.createDirectoryLink target' link'++-- | Remove an existing /directory/ symbolic link.+--+-- On Windows, this is an alias for 'removeDirectory'.  On POSIX systems, this+-- is an alias for 'removeFile'.+--+-- See also: 'removeFile', which can remove an existing /file/ symbolic link.+--+-- @since 1.3.1.0+removeDirectoryLink :: FilePath -> IO ()+removeDirectoryLink = encodeFS >=> D.removeDirectoryLink++-- | Check whether an existing @path@ is a symbolic link.  If @path@ is a+-- regular file or directory, 'False' is returned.  If @path@ does not exist+-- or is otherwise inaccessible, an exception is thrown (see below).+--+-- On Windows, this checks for @FILE_ATTRIBUTE_REPARSE_POINT@.  In addition to+-- symbolic links, the function also returns true on junction points.  On+-- POSIX systems, this checks for @S_IFLNK@.+--+-- The operation may fail with:+--+-- * 'isDoesNotExistError' if the symbolic link does not exist; or+--+-- * 'isPermissionError' if the user is not permitted to read the symbolic+--   link.+--+-- @since 1.3.0.0+pathIsSymbolicLink :: FilePath -> IO Bool+pathIsSymbolicLink = encodeFS >=> D.pathIsSymbolicLink++{-# DEPRECATED isSymbolicLink "Use 'pathIsSymbolicLink' instead" #-}+isSymbolicLink :: FilePath -> IO Bool+isSymbolicLink = pathIsSymbolicLink++-- | Retrieve the target path of either a file or directory symbolic link.+-- The returned path may not be absolute, may not exist, and may not even be a+-- valid path.+--+-- On Windows systems, this calls @DeviceIoControl@ with+-- @FSCTL_GET_REPARSE_POINT@.  In addition to symbolic links, the function+-- also works on junction points.  On POSIX systems, this calls @readlink@.+--+-- Windows-specific errors: This operation may fail with+-- 'illegalOperationErrorType' if the file system does not support symbolic+-- links.+--+-- @since 1.3.1.0+getSymbolicLinkTarget :: FilePath -> IO FilePath+getSymbolicLinkTarget = encodeFS >=> D.getSymbolicLinkTarget >=> decodeFS++-- | Obtain the time at which the file or directory was last accessed.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to read+--   the access time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- Caveat for POSIX systems: This function returns a timestamp with sub-second+-- resolution only if this package is compiled against @unix-2.6.0.0@ or later+-- and the underlying filesystem supports them.+--+-- @since 1.2.3.0+--+getAccessTime :: FilePath -> IO UTCTime+getAccessTime = encodeFS >=> D.getAccessTime++-- | Obtain the time at which the file or directory was last modified.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to read+--   the modification time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- Caveat for POSIX systems: This function returns a timestamp with sub-second+-- resolution only if this package is compiled against @unix-2.6.0.0@ or later+-- and the underlying filesystem supports them.+--+getModificationTime :: FilePath -> IO UTCTime+getModificationTime = encodeFS >=> D.getModificationTime++-- | Change the time at which the file or directory was last accessed.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to alter the+--   access time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- Some caveats for POSIX systems:+--+-- * Not all systems support @utimensat@, in which case the function can only+--   emulate the behavior by reading the modification time and then setting+--   both the access and modification times together.  On systems where+--   @utimensat@ is supported, the access time is set atomically with+--   nanosecond precision.+--+-- * If compiled against a version of @unix@ prior to @2.7.0.0@, the function+--   would not be able to set timestamps with sub-second resolution.  In this+--   case, there would also be loss of precision in the modification time.+--+-- @since 1.2.3.0+--+setAccessTime :: FilePath -> UTCTime -> IO ()+setAccessTime path atime = encodeFS path >>= (`D.setAccessTime` atime)++-- | Change the time at which the file or directory was last modified.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to alter the+--   modification time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- * 'InvalidArgument' on FAT32 file system if the time is before+--   DOS Epoch (1 January 1980).+--+-- Some caveats for POSIX systems:+--+-- * Not all systems support @utimensat@, in which case the function can only+--   emulate the behavior by reading the access time and then setting both the+--   access and modification times together.  On systems where @utimensat@ is+--   supported, the modification time is set atomically with nanosecond+--   precision.+--+-- * If compiled against a version of @unix@ prior to @2.7.0.0@, the function+--   would not be able to set timestamps with sub-second resolution.  In this+--   case, there would also be loss of precision in the access time.+--+-- @since 1.2.3.0+--+setModificationTime :: FilePath -> UTCTime -> IO ()+setModificationTime path mtime =+  encodeFS path >>= (`D.setModificationTime` mtime)++{- | Returns the current user's home directory.++The directory returned is expected to be writable by the current user,+but note that it isn't generally considered good practice to store+application-specific data here; use 'getXdgDirectory' or+'getAppUserDataDirectory' instead.++On Unix, 'getHomeDirectory' behaves as follows:++* Returns $HOME env variable if set (including to an empty string).+* Otherwise uses home directory returned by @getpwuid_r@ using the UID of the+  current process' user. This basically reads the @\/etc\/passwd@ file. An+  empty home directory field is considered valid.++On Windows, the system is queried for a suitable path; a typical path might be+@C:\/Users\//\<user\>/@.++The operation may fail with:++* @UnsupportedOperation@+The operating system has no notion of home directory.++* 'isDoesNotExistError'+The home directory for the current user does not exist, or+cannot be found.+-}+getHomeDirectory :: IO FilePath+getHomeDirectory = D.getHomeDirectory >>= decodeFS++-- | Obtain the paths to special directories for storing user-specific+--   application data, configuration, and cache files, conforming to the+--   <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html XDG Base Directory Specification>.+--   Compared with 'getAppUserDataDirectory', this function provides a more+--   fine-grained hierarchy as well as greater flexibility for the user.+--+--   On Windows, 'XdgData' and 'XdgConfig' usually map to the same directory+--   unless overridden.+--+--   Refer to the docs of 'XdgDirectory' for more details.+--+--   The second argument is usually the name of the application.  Since it+--   will be integrated into the path, it must consist of valid path+--   characters.  Note: if the second argument is an absolute path, it will+--   just return the second argument.+--+--   Note: The directory may not actually exist, in which case you would need+--   to create it with file mode @700@ (i.e. only accessible by the owner).+--+--   As of 1.3.5.0, the environment variable is ignored if set to a relative+--   path, per revised XDG Base Directory Specification.  See+--   <https://github.com/haskell/directory/issues/100 #100>.+--+--   @since 1.2.3.0+getXdgDirectory :: XdgDirectory         -- ^ which special directory+                -> FilePath             -- ^ a relative path that is appended+                                        --   to the path; if empty, the base+                                        --   path is returned+                -> IO FilePath+getXdgDirectory xdgDir = encodeFS >=> D.getXdgDirectory xdgDir >=> decodeFS++-- | Similar to 'getXdgDirectory' but retrieves the entire list of XDG+-- directories.+--+-- On Windows, 'XdgDataDirs' and 'XdgConfigDirs' usually map to the same list+-- of directories unless overridden.+--+-- Refer to the docs of 'XdgDirectoryList' for more details.+getXdgDirectoryList :: XdgDirectoryList -- ^ which special directory list+                    -> IO [FilePath]+getXdgDirectoryList = D.getXdgDirectoryList >=> (`for` decodeFS)++-- | Obtain the path to a special directory for storing user-specific+--   application data (traditional Unix location).  Newer applications may+--   prefer the the XDG-conformant location provided by 'getXdgDirectory'+--   (<https://github.com/haskell/directory/issues/6#issuecomment-96521020 migration guide>).+--+--   The argument is usually the name of the application.  Since it will be+--   integrated into the path, it must consist of valid path characters.+--+--   * On Unix-like systems, the path is @~\/./\<app\>/@.+--   * On Windows, the path is @%APPDATA%\//\<app\>/@+--     (e.g. @C:\/Users\//\<user\>/\/AppData\/Roaming\//\<app\>/@)+--+--   Note: the directory may not actually exist, in which case you would need+--   to create it.  It is expected that the parent directory exists and is+--   writable.+--+--   The operation may fail with:+--+--   * @UnsupportedOperation@+--     The operating system has no notion of application-specific data+--     directory.+--+--   * 'isDoesNotExistError'+--     The home directory for the current user does not exist, or cannot be+--     found.+--+getAppUserDataDirectory :: FilePath     -- ^ a relative path that is appended+                                        --   to the path+                        -> IO FilePath+getAppUserDataDirectory = encodeFS >=> D.getAppUserDataDirectory >=>decodeFS++{- | Returns the current user's document directory.++The directory returned is expected to be writable by the current user,+but note that it isn't generally considered good practice to store+application-specific data here; use 'getXdgDirectory' or+'getAppUserDataDirectory' instead.++On Unix, 'getUserDocumentsDirectory' returns the value of the @HOME@+environment variable.  On Windows, the system is queried for a+suitable path; a typical path might be @C:\/Users\//\<user\>/\/Documents@.++The operation may fail with:++* @UnsupportedOperation@+The operating system has no notion of document directory.++* 'isDoesNotExistError'+The document directory for the current user does not exist, or+cannot be found.+-}+getUserDocumentsDirectory :: IO FilePath+getUserDocumentsDirectory = D.getUserDocumentsDirectory >>= decodeFS++{- | Returns the current directory for temporary files.++On Unix, 'getTemporaryDirectory' returns the value of the @TMPDIR@+environment variable or \"\/tmp\" if the variable isn\'t defined.+On Windows, the function checks for the existence of environment variables in+the following order and uses the first path found:++*+TMP environment variable.++*+TEMP environment variable.++*+USERPROFILE environment variable.++*+The Windows directory++The operation may fail with:++* @UnsupportedOperation@+The operating system has no notion of temporary directory.++The function doesn\'t verify whether the path exists.+-}+getTemporaryDirectory :: IO FilePath+getTemporaryDirectory = D.getTemporaryDirectory >>= decodeFS++-- | Get the contents of the @PATH@ environment variable.+getExecSearchPath :: IO [FilePath]+getExecSearchPath = D.getExecSearchPath >>= (`for` decodeFS)
System/Directory/Internal.hs view
@@ -1,28 +1,30 @@ {-# LANGUAGE CPP #-}-{-# OPTIONS_HADDOCK hide #-}+{-# OPTIONS_HADDOCK not-home #-}+-- |+-- Stability: unstable+-- Portability: unportable+--+-- Internal modules are always subject to change from version to version.+-- The contents of this module are also platform-dependent, hence what is+-- shown in the Hackage documentation may differ from what is actually+-- available on your system.+ #include <HsDirectoryConfig.h>  module System.Directory.Internal-  ( module System.Directory.Internal.Config--#ifdef HAVE_UTIMENSAT-  , module System.Directory.Internal.C_utimensat-#endif+  ( module System.Directory.Internal.Common -#ifdef mingw32_HOST_OS+#if defined(mingw32_HOST_OS)   , module System.Directory.Internal.Windows #else   , module System.Directory.Internal.Posix #endif    ) where-import System.Directory.Internal.Config -#ifdef HAVE_UTIMENSAT-import System.Directory.Internal.C_utimensat-#endif+import System.Directory.Internal.Common -#ifdef mingw32_HOST_OS+#if defined(mingw32_HOST_OS) import System.Directory.Internal.Windows #else import System.Directory.Internal.Posix
System/Directory/Internal/C_utimensat.hsc view
@@ -1,3 +1,5 @@+{-# LANGUAGE CApiFFI #-}+ module System.Directory.Internal.C_utimensat where #include <HsDirectoryConfig.h> #ifdef HAVE_UTIMENSAT@@ -10,17 +12,16 @@ #ifdef HAVE_SYS_STAT_H # include <sys/stat.h> #endif-#include <System/Directory/Internal/utility.h> import Prelude () import System.Directory.Internal.Prelude import Data.Time.Clock.POSIX (POSIXTime)+import qualified System.Posix as Posix  data CTimeSpec = CTimeSpec EpochTime CLong  instance Storable CTimeSpec where     sizeOf    _ = #{size struct timespec}-    -- workaround (hsc2hs for GHC < 8.0 doesn't support #{alignment ...})-    alignment _ = #{size char[alignof(struct timespec)] }+    alignment _ = #{alignment struct timespec}     poke p (CTimeSpec sec nsec) = do       (#poke struct timespec, tv_sec)  p sec       (#poke struct timespec, tv_nsec) p nsec@@ -29,9 +30,6 @@       nsec <- #{peek struct timespec, tv_nsec} p       return (CTimeSpec sec nsec) -c_AT_FDCWD :: CInt-c_AT_FDCWD = (#const AT_FDCWD)- utimeOmit :: CTimeSpec utimeOmit = CTimeSpec (CTime 0) (#const UTIME_OMIT) @@ -41,7 +39,7 @@     (sec,  frac)  = if frac' < 0 then (sec' - 1, frac' + 1) else (sec', frac')     (sec', frac') = properFraction (toRational t) -foreign import ccall "utimensat" c_utimensat-  :: CInt -> CString -> Ptr CTimeSpec -> CInt -> IO CInt+foreign import capi "sys/stat.h utimensat" c_utimensat+  :: Posix.Fd -> CString -> Ptr CTimeSpec -> CInt -> IO CInt  #endif
+ System/Directory/Internal/Common.hs view
@@ -0,0 +1,353 @@+{-# LANGUAGE CPP #-}+module System.Directory.Internal.Common+  ( module System.Directory.Internal.Common+  , OsPath+  , OsString+  ) where+import Prelude ()+import System.Directory.Internal.Prelude+import GHC.IO.Encoding.Failure (CodingFailureMode(TransliterateCodingFailure))+import GHC.IO.Encoding.UTF16 (mkUTF16le)+import GHC.IO.Encoding.UTF8 (mkUTF8)+import qualified System.File.OsPath.Internal as File+import System.OsPath+  ( OsPath+  , OsString+  , addTrailingPathSeparator+  , decodeUtf+  , decodeWith+  , encodeUtf+  , hasTrailingPathSeparator+  , isPathSeparator+  , isRelative+  , joinDrive+  , joinPath+  , normalise+  , pack+  , pathSeparator+  , pathSeparators+  , splitDirectories+  , splitDrive+  , toChar+  , unpack+  , unsafeFromChar+  )++-- | A generator with side-effects.+newtype ListT m a = ListT { unListT :: m (Maybe (a, ListT m a)) }++emptyListT :: Applicative m => ListT m a+emptyListT = ListT (pure Nothing)++maybeToListT :: Applicative m => m (Maybe a) -> ListT m a+maybeToListT m = ListT (((\ x -> (x, emptyListT)) <$>) <$> m)++listToListT :: Applicative m => [a] -> ListT m a+listToListT [] = emptyListT+listToListT (x : xs) = ListT (pure (Just (x, listToListT xs)))++liftJoinListT :: Monad m => m (ListT m a) -> ListT m a+liftJoinListT m = ListT (m >>= unListT)++listTHead :: Functor m => ListT m a -> m (Maybe a)+listTHead (ListT m) = (fst <$>) <$> m++listTToList :: Monad m => ListT m a -> m [a]+listTToList (ListT m) = do+  mx <- m+  case mx of+    Nothing -> pure []+    Just (x, m') -> do+      xs <- listTToList m'+      pure (x : xs)++andM :: Monad m => m Bool -> m Bool -> m Bool+andM mx my = do+  x <- mx+  if x+    then my+    else pure x++sequenceWithIOErrors_ :: [IO ()] -> IO ()+sequenceWithIOErrors_ actions = go (Right ()) actions+  where++    go :: Either IOError () -> [IO ()] -> IO ()+    go (Left e)   []       = ioError e+    go (Right ()) []       = pure ()+    go s          (m : ms) = s `seq` do+      r <- tryIOError m+      go (s *> r) ms++-- | Similar to 'try' but only catches a specify kind of 'IOError' as+--   specified by the predicate.+tryIOErrorType :: (IOError -> Bool) -> IO a -> IO (Either IOError a)+tryIOErrorType check action = do+  result <- tryIOError action+  case result of+    Left  err -> if check err then pure (Left err) else throwIO err+    Right val -> pure (Right val)++-- | Attempt to perform the given action, silencing any IO exception thrown by+-- it.+ignoreIOExceptions :: IO () -> IO ()+ignoreIOExceptions io = io `catchIOError` (\_ -> pure ())++specializeErrorString :: String -> (IOError -> Bool) -> IO a -> IO a+specializeErrorString str errType action = do+  mx <- tryIOErrorType errType action+  case mx of+    Left  e -> throwIO (ioeSetErrorString e str)+    Right x -> pure x++ioeAddLocation :: IOError -> String -> IOError+ioeAddLocation e loc = do+  ioeSetLocation e newLoc+  where+    newLoc = loc <> if null oldLoc then "" else ":" <> oldLoc+    oldLoc = ioeGetLocation e++rightOrError :: Exception e => Either e a -> a+rightOrError (Left e)  = error (displayException e)+rightOrError (Right a) = a++-- | Fallibly converts String to OsString. Only intended to be used on literals.+os :: String -> OsString+os = rightOrError . encodeUtf++-- | Fallibly converts OsString to String. Only intended to be used on literals.+so :: OsString -> String+so = rightOrError . decodeUtf++ioeSetOsPath :: IOError -> OsPath -> IOError+ioeSetOsPath err =+  ioeSetFileName err .+  rightOrError .+  decodeWith+    (mkUTF8 TransliterateCodingFailure)+    (mkUTF16le TransliterateCodingFailure)++dropSpecialDotDirs :: [OsPath] -> [OsPath]+dropSpecialDotDirs = filter f+  where f filename = filename /= os "." && filename /= os ".."++-- | Given a list of path segments, expand @.@ and @..@.  The path segments+-- must not contain path separators.+expandDots :: [OsPath] -> [OsPath]+expandDots = reverse . go []+  where+    go ys' xs' =+      case xs' of+        [] -> ys'+        x : xs+          | x == os "." -> go ys' xs+          | x == os ".." ->+              case ys' of+                [] -> go (x : ys') xs+                y : ys+                  | y == os ".." -> go (x : ys') xs+                  | otherwise -> go ys xs+          | otherwise -> go (x : ys') xs++-- | Convert to the right kind of slashes.+normalisePathSeps :: OsPath -> OsPath+normalisePathSeps p = pack (normaliseChar <$> unpack p)+  where normaliseChar c = if isPathSeparator c then pathSeparator else c++-- | Remove redundant trailing slashes and pick the right kind of slash.+normaliseTrailingSep :: OsPath -> OsPath+normaliseTrailingSep path = do+  let path' = reverse (unpack path)+  let (sep, path'') = span isPathSeparator path'+  let addSep = if null sep then id else (pathSeparator :)+  pack (reverse (addSep path''))++-- | Convert empty paths to the current directory, otherwise leave it+-- unchanged.+emptyToCurDir :: OsPath -> OsPath+emptyToCurDir path+  | path == mempty = os "."+  | otherwise      = path++-- | Similar to 'normalise' but empty paths stay empty.+simplifyPosix :: OsPath -> OsPath+simplifyPosix path+  | path == mempty = mempty+  | otherwise      = normalise path++-- | Similar to 'normalise' but:+--+-- * empty paths stay empty,+-- * parent dirs (@..@) are expanded, and+-- * paths starting with @\\\\@ are preserved.+--+-- The goal is to preserve the meaning of paths better than 'normalise'.+simplifyWindows :: OsPath -> OsPath+simplifyWindows path+  | path == mempty = mempty+  | otherwise = case toChar <$> unpack drive' of+      '\\' : '\\' : _ -> drive' <> subpath+      _ -> simplifiedPath+  where+    simplifiedPath = joinDrive drive' subpath'+    (drive, subpath) = splitDrive path+    drive' = upperDrive (normaliseTrailingSep (normalisePathSeps drive))+    subpath' = appendSep . avoidEmpty . prependSep . joinPath .+               stripPardirs . expandDots . skipSeps .+               splitDirectories $ subpath++    upperDrive d = case unpack d of+      c : k : s+        | isAlpha (toChar c), toChar k == ':', all isPathSeparator s ->+          -- unsafeFromChar is safe here since all characters are ASCII.+          pack (unsafeFromChar (toUpper (toChar c)) : unsafeFromChar ':' : s)+      _ -> d+    skipSeps =+      (pack <$>) .+      filter (not . (`elem` (pure <$> pathSeparators))) .+      (unpack <$>)+    stripPardirs | pathIsAbsolute || subpathIsAbsolute = dropWhile (== os "..")+                 | otherwise = id+    prependSep | subpathIsAbsolute = (pack [pathSeparator] <>)+               | otherwise = id+    avoidEmpty | not pathIsAbsolute+               , drive == mempty || hasTrailingPathSep -- prefer "C:" over "C:."+                 = emptyToCurDir+               | otherwise = id+    appendSep p | hasTrailingPathSep, not (pathIsAbsolute && p == mempty)+                  = addTrailingPathSeparator p+                | otherwise = p+    pathIsAbsolute = not (isRelative path)+    subpathIsAbsolute = any isPathSeparator (take 1 (unpack subpath))+    hasTrailingPathSep = hasTrailingPathSeparator subpath++data WhetherFollow = NoFollow | FollowLinks deriving (Show)++isNoFollow :: WhetherFollow -> Bool+isNoFollow NoFollow    = True+isNoFollow FollowLinks = False++data FileType+  = File+  | SymbolicLink -- ^ POSIX: either file or directory link; Windows: file link+  | Directory+  | DirectoryLink -- ^ Windows only: directory link+  deriving (Bounded, Enum, Eq, Ord, Read, Show)++-- | Check whether the given 'FileType' is considered a directory by the+-- operating system.  This affects the choice of certain functions+-- e.g. 'System.Directory.removeDirectory' vs 'System.Directory.removeFile'.+fileTypeIsDirectory :: FileType -> Bool+fileTypeIsDirectory Directory     = True+fileTypeIsDirectory DirectoryLink = True+fileTypeIsDirectory _             = False++-- | Return whether the given 'FileType' is a link.+fileTypeIsLink :: FileType -> Bool+fileTypeIsLink SymbolicLink  = True+fileTypeIsLink DirectoryLink = True+fileTypeIsLink _             = False++data Permissions+  = Permissions+  { readable :: Bool+  , writable :: Bool+  , executable :: Bool+  , searchable :: Bool+  } deriving (Eq, Ord, Read, Show)++withBinaryFile :: OsPath -> IOMode -> (Handle -> IO r) -> IO r+withBinaryFile path mode =+  bracket (File.openFileWithCloseOnExec path mode) hClose++openTempFile' :: String -> OsPath -> OsString -> Bool -> CMode -> Bool+              -> IO (OsPath, Handle)+openTempFile' loc tmpDir template binary mode _cloExec =+  File.openTempFile' loc tmpDir template binary mode+#if MIN_VERSION_file_io(0, 2, 0)+    _cloExec+#endif++-- | Copy data from one handle to another until end of file.+copyHandleData :: Handle                -- ^ Source handle+               -> Handle                -- ^ Destination handle+               -> IO ()+copyHandleData hFrom hTo =+  (`ioeAddLocation` "copyData") `modifyIOError` do+    allocaBytes bufferSize go+  where+    -- 128 KiB, as coreutils `cp` uses as of May 2014 (see ioblksize.h)+    bufferSize = 131072+    go buffer = do+      count <- hGetBuf hFrom buffer bufferSize+      when (count > 0) $ do+        hPutBuf hTo buffer count+        go buffer++-- | Special directories for storing user-specific application data,+-- configuration, and cache files, as specified by the+-- <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html XDG Base Directory Specification>.+--+-- Note: On Windows, 'XdgData' and 'XdgConfig' usually map to the same+-- directory.+--+-- @since 1.2.3.0+data XdgDirectory+  = XdgData+    -- ^ For data files (e.g. images).+    -- It uses the @XDG_DATA_HOME@ environment variable.+    -- On non-Windows systems, the default is @~\/.local\/share@.+    -- On Windows, the default is @%APPDATA%@+    -- (e.g. @C:\/Users\//\<user\>/\/AppData\/Roaming@).+    -- Can be considered as the user-specific equivalent of @\/usr\/share@.+  | XdgConfig+    -- ^ For configuration files.+    -- It uses the @XDG_CONFIG_HOME@ environment variable.+    -- On non-Windows systems, the default is @~\/.config@.+    -- On Windows, the default is @%APPDATA%@+    -- (e.g. @C:\/Users\//\<user\>/\/AppData\/Roaming@).+    -- Can be considered as the user-specific equivalent of @\/etc@.+  | XdgCache+    -- ^ For non-essential files (e.g. cache).+    -- It uses the @XDG_CACHE_HOME@ environment variable.+    -- On non-Windows systems, the default is @~\/.cache@.+    -- On Windows, the default is @%LOCALAPPDATA%@+    -- (e.g. @C:\/Users\//\<user\>/\/AppData\/Local@).+    -- Can be considered as the user-specific equivalent of @\/var\/cache@.+  | XdgState+   -- ^ For data that should persist between (application) restarts,+   -- but that is not important or portable enough to the user that it+   -- should be stored in 'XdgData'.+   -- It uses the @XDG_STATE_HOME@ environment variable.+   -- On non-Windows systems, the default is @~\/.local\/state@.  On+   -- Windows, the default is @%LOCALAPPDATA%@+   -- (e.g. @C:\/Users\//\<user\>/\/AppData\/Local@).+   --+   -- @since 1.3.7.0+  deriving (Bounded, Enum, Eq, Ord, Read, Show)++-- | Search paths for various application data, as specified by the+-- <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html XDG Base Directory Specification>.+--+-- The list of paths is split using 'System.FilePath.searchPathSeparator',+-- which on Windows is a semicolon.+--+-- Note: On Windows, 'XdgDataDirs' and 'XdgConfigDirs' usually yield the same+-- result.+--+-- @since 1.3.2.0+data XdgDirectoryList+  = XdgDataDirs+    -- ^ For data files (e.g. images).+    -- It uses the @XDG_DATA_DIRS@ environment variable.+    -- On non-Windows systems, the default is @\/usr\/local\/share\/@ and+    -- @\/usr\/share\/@.+    -- On Windows, the default is @%PROGRAMDATA%@ or @%ALLUSERSPROFILE%@+    -- (e.g. @C:\/ProgramData@).+  | XdgConfigDirs+    -- ^ For configuration files.+    -- It uses the @XDG_CONFIG_DIRS@ environment variable.+    -- On non-Windows systems, the default is @\/etc\/xdg@.+    -- On Windows, the default is @%PROGRAMDATA%@ or @%ALLUSERSPROFILE%@+    -- (e.g. @C:\/ProgramData@).+  deriving (Bounded, Enum, Eq, Ord, Read, Show)
System/Directory/Internal/Config.hs view
@@ -1,13 +1,10 @@ {-# LANGUAGE CPP #-}-#include <HsDirectoryConfig.h> module System.Directory.Internal.Config where+#include <HsDirectoryConfig.h>+import System.Directory.Internal.Common --- | Filename extension for executable files (including the dot if any)---   (usually @\"\"@ on POSIX systems and @\".exe\"@ on Windows or OS\/2).------ @since 1.2.4.0-exeExtension :: String-exeExtension = EXE_EXTENSION+exeExtension :: OsString+exeExtension = os EXE_EXTENSION -- We avoid using #const_str from hsc because it breaks cross-compilation -- builds, so we use this ugly workaround where we simply paste the C string -- literal directly in here.  This will probably break if the EXE_EXTENSION
System/Directory/Internal/Posix.hsc view
@@ -1,12 +1,99 @@+{-# LANGUAGE CApiFFI #-} module System.Directory.Internal.Posix where #include <HsDirectoryConfig.h>-#ifndef mingw32_HOST_OS+#if !defined(mingw32_HOST_OS)+#include <fcntl.h> #ifdef HAVE_LIMITS_H # include <limits.h> #endif+#ifdef HAVE_SYS_STAT_H+# include <sys/stat.h>+#endif import Prelude () import System.Directory.Internal.Prelude+#ifdef HAVE_UTIMENSAT+import System.Directory.Internal.C_utimensat+#endif+import System.Directory.Internal.Common+import System.Directory.Internal.Config (exeExtension)+import Data.Time (UTCTime)+import Data.Time.Clock.POSIX (POSIXTime)+import System.OsPath ((</>), isRelative, splitSearchPath)+import System.OsString.Internal.Types (OsString(OsString, getOsString))+import qualified Data.Time.Clock.POSIX as POSIXTime+import qualified System.OsPath.Internal as OsPath+import qualified System.Posix.Directory.Fd as Posix+import qualified System.Posix.Directory.PosixPath as Posix+import qualified System.Posix.Env.PosixString as Posix+import qualified System.Posix.Files as Posix (FileStatus(..))+import qualified System.Posix.Files.PosixString as Posix+import qualified System.Posix.Internals as Posix (CStat)+import qualified System.Posix.IO.PosixString as Posix+import qualified System.Posix.PosixPath.FilePath as Posix+import qualified System.Posix.Types as Posix+import qualified System.Posix.User.ByteString as Posix +c_AT_FDCWD :: Posix.Fd+c_AT_FDCWD = Posix.Fd (#const AT_FDCWD)++c_AT_SYMLINK_NOFOLLOW :: CInt+c_AT_SYMLINK_NOFOLLOW = (#const AT_SYMLINK_NOFOLLOW)++atWhetherFollow :: WhetherFollow -> CInt+atWhetherFollow NoFollow    = c_AT_SYMLINK_NOFOLLOW+atWhetherFollow FollowLinks = 0++defaultOpenFlags :: Posix.OpenFileFlags+defaultOpenFlags =+  Posix.defaultFileFlags+  { Posix.noctty = True+  , Posix.nonBlock = True+  , Posix.cloexec = True+  }++type RawHandle = Posix.Fd++openRaw :: WhetherFollow -> Maybe RawHandle -> OsPath -> IO RawHandle+openRaw whetherFollow dir (OsString path) =+  Posix.openFdAt dir path Posix.ReadOnly flags+  where+    flags = defaultOpenFlags { Posix.nofollow = isNoFollow whetherFollow }++closeRaw :: RawHandle -> IO ()+closeRaw = Posix.closeFd++createDirectoryInternal :: OsPath -> IO ()+createDirectoryInternal (OsString path) = Posix.createDirectory path 0o777++foreign import ccall "unistd.h unlinkat" c_unlinkat+  :: Posix.Fd -> CString -> CInt -> IO CInt++removePathAt :: FileType -> Maybe RawHandle -> OsPath -> IO ()+removePathAt ty dir (OsString path) =+  Posix.withFilePath path $ \ pPath -> do+    Posix.throwErrnoPathIfMinus1_ "unlinkat" path+      (c_unlinkat (fromMaybe c_AT_FDCWD dir) pPath flag)+    pure ()+  where+    flag | fileTypeIsDirectory ty = (#const AT_REMOVEDIR)+         | otherwise              = 0++removePathInternal :: Bool -> OsPath -> IO ()+removePathInternal True  = Posix.removeDirectory . getOsString+removePathInternal False = Posix.removeLink . getOsString++renamePathInternal :: OsPath -> OsPath -> IO ()+renamePathInternal (OsString p1) (OsString p2) = Posix.rename p1 p2++-- On POSIX, the removability of a file is only affected by the attributes of+-- the containing directory.+filesAlwaysRemovable :: Bool+filesAlwaysRemovable = True++-- | On POSIX, equivalent to 'simplifyPosix'.+simplify :: OsPath -> OsPath+simplify = simplifyPosix+ -- we use the 'free' from the standard library here since it's not entirely -- clear whether Haskell's 'free' corresponds to the same one foreign import ccall unsafe "free" c_free :: Ptr a -> IO ()@@ -16,14 +103,30 @@ c_PATH_MAX | c_PATH_MAX' > toInteger maxValue = Nothing            | otherwise                        = Just (fromInteger c_PATH_MAX')   where c_PATH_MAX' = (#const PATH_MAX)-        maxValue    = maxBound `asTypeOf` case c_PATH_MAX of ~(Just x) -> x+        maxValue = maxBound `asTypeInMaybe` c_PATH_MAX+        asTypeInMaybe :: a -> Maybe a -> a+        asTypeInMaybe = const #else c_PATH_MAX = Nothing #endif -foreign import ccall "realpath" c_realpath-  :: CString -> CString -> IO CString+#if !defined(HAVE_REALPATH) +c_realpath :: CString -> CString -> IO CString+c_realpath _ _ =+  throwIO+    (mkIOError+      UnsupportedOperation+      "platform does not support realpath"+      Nothing+      Nothing)++#else++foreign import ccall "realpath" c_realpath :: CString -> CString -> IO CString++#endif+ withRealpath :: CString -> (CString -> IO a) -> IO a withRealpath path action = case c_PATH_MAX of   Nothing ->@@ -34,5 +137,302 @@     -- allocate one extra just to be safe     allocaBytes (pathMax + 1) (realpath >=> action)   where realpath = throwErrnoIfNull "" . c_realpath path++realPath :: OsPath -> IO OsPath+realPath (OsString path') =+  Posix.withFilePath path'+    (`withRealpath` ((OsString <$>) . Posix.peekFilePath))++canonicalizePathSimplify :: OsPath -> IO OsPath+canonicalizePathSimplify = pure++findExecutablesLazyInternal :: ([OsPath] -> OsString -> ListT IO OsPath)+                            -> OsString+                            -> ListT IO OsPath+findExecutablesLazyInternal findExecutablesInDirectoriesLazy binary =+  liftJoinListT $ do+    path <- getPath+    pure (findExecutablesInDirectoriesLazy path binary)++getPath :: IO [OsPath]+getPath = splitSearchPath <$> getEnvOs (os "PATH")++exeExtensionInternal :: OsString+exeExtensionInternal = exeExtension++openDirFromFd :: Posix.Fd -> IO Posix.DirStream+openDirFromFd fd = Posix.unsafeOpenDirStreamFd =<< Posix.dup fd++readDirStreamToEnd :: Posix.DirStream -> IO [OsPath]+readDirStreamToEnd stream = loop id+  where+    loop acc = do+      e <- Posix.readDirStream stream+      if e == mempty+        then pure (acc [])+        else loop (acc . (OsString e :))++readDirToEnd :: RawHandle -> IO [OsPath]+readDirToEnd fd =+  bracket (openDirFromFd fd) Posix.closeDirStream readDirStreamToEnd++getDirectoryContentsInternal :: OsPath -> IO [OsPath]+getDirectoryContentsInternal (OsString path) =+  bracket (Posix.openDirStream path) Posix.closeDirStream readDirStreamToEnd++getCurrentDirectoryInternal :: IO OsPath+getCurrentDirectoryInternal = OsString <$> Posix.getWorkingDirectory++-- | Convert a path into an absolute path.  If the given path is relative, the+-- current directory is prepended and the path may or may not be simplified.+-- If the path is already absolute, the path is returned unchanged.  The+-- function preserves the presence or absence of the trailing path separator.+--+-- If the path is already absolute, the operation never fails.  Otherwise, the+-- operation may throw exceptions.+--+-- Empty paths are treated as the current directory.+prependCurrentDirectory :: OsPath -> IO OsPath+prependCurrentDirectory path+  | isRelative path =+    ((`ioeAddLocation` "prependCurrentDirectory") .+     (`ioeSetOsPath` path)) `modifyIOError` do+      (</> path) <$> getCurrentDirectoryInternal+  | otherwise = pure path++setCurrentDirectoryInternal :: OsPath -> IO ()+setCurrentDirectoryInternal = Posix.changeWorkingDirectory . getOsString++linkToDirectoryIsDirectory :: Bool+linkToDirectoryIsDirectory = False++createHardLink :: OsPath -> OsPath -> IO ()+createHardLink (OsString p1) (OsString p2) = Posix.createLink p1 p2++createSymbolicLink :: Bool -> OsPath -> OsPath -> IO ()+createSymbolicLink _ (OsString p1) (OsString p2) =+  Posix.createSymbolicLink p1 p2++readSymbolicLink :: OsPath -> IO OsPath+readSymbolicLink = (OsString <$>) . Posix.readSymbolicLink . getOsString++type Metadata = Posix.FileStatus++foreign import capi "sys/stat.h fstatat" c_fstatat+  :: Posix.Fd -> CString -> Ptr Posix.CStat -> CInt -> IO CInt++getMetadataAt :: WhetherFollow -> Maybe RawHandle -> OsPath -> IO Metadata+getMetadataAt whetherFollow dir (OsString path) =+  Posix.withFilePath path $ \ pPath -> do+    stat <- mallocForeignPtrBytes (#const sizeof(struct stat))+    withForeignPtr stat $ \ pStat -> do+      Posix.throwErrnoPathIfMinus1_ "fstatat" path $ do+        c_fstatat (fromMaybe c_AT_FDCWD dir) pPath pStat flags+    pure (Posix.FileStatus stat)+  where+    flags = atWhetherFollow whetherFollow++getSymbolicLinkMetadata :: OsPath -> IO Metadata+getSymbolicLinkMetadata = Posix.getSymbolicLinkStatus . getOsString++getFileMetadata :: OsPath -> IO Metadata+getFileMetadata = Posix.getFileStatus . getOsString++fileTypeFromMetadata :: Metadata -> FileType+fileTypeFromMetadata stat+  | isLink    = SymbolicLink+  | isDir     = Directory+  | otherwise = File+  where+    isLink = Posix.isSymbolicLink stat+    isDir  = Posix.isDirectory stat++fileSizeFromMetadata :: Metadata -> Integer+fileSizeFromMetadata = fromIntegral . Posix.fileSize++accessTimeFromMetadata :: Metadata -> UTCTime+accessTimeFromMetadata =+  POSIXTime.posixSecondsToUTCTime . Posix.accessTimeHiRes++modificationTimeFromMetadata :: Metadata -> UTCTime+modificationTimeFromMetadata =+  POSIXTime.posixSecondsToUTCTime . Posix.modificationTimeHiRes++type Mode = Posix.FileMode++modeFromMetadata :: Metadata -> Mode+modeFromMetadata = Posix.fileMode++allWriteMode :: Posix.FileMode+allWriteMode =+  Posix.ownerWriteMode .|.+  Posix.groupWriteMode .|.+  Posix.otherWriteMode++hasWriteMode :: Mode -> Bool+hasWriteMode m = m .&. allWriteMode /= 0++setWriteMode :: Bool -> Mode -> Mode+setWriteMode False m = m .&. complement allWriteMode+setWriteMode True  m = m .|. allWriteMode++setForceRemoveMode :: Mode -> Mode+setForceRemoveMode m = m .|. Posix.ownerModes++foreign import capi "sys/stat.h fchmodat" c_fchmodat+  :: Posix.Fd -> CString -> Posix.FileMode -> CInt -> IO CInt++setModeAt :: Maybe RawHandle -> OsPath -> Mode -> IO ()+setModeAt dir (OsString path) mode = do+  Posix.withFilePath path $ \ pPath ->+    Posix.throwErrnoPathIfMinus1_ "fchmodat" path $ do+      c_fchmodat (fromMaybe c_AT_FDCWD dir) pPath mode 0++setFileMode :: OsPath -> Mode -> IO ()+setFileMode = Posix.setFileMode . getOsString++setFilePermissions :: OsPath -> Mode -> IO ()+setFilePermissions = setFileMode++getAccessPermissions :: OsPath -> IO Permissions+getAccessPermissions path = do+  m <- getFileMetadata path+  let isDir = fileTypeIsDirectory (fileTypeFromMetadata m)+  let OsString path' = path+  r <- Posix.fileAccess path' True  False False+  w <- Posix.fileAccess path' False True  False+  x <- Posix.fileAccess path' False False True+  pure Permissions+       { readable   = r+       , writable   = w+       , executable = x && not isDir+       , searchable = x && isDir+       }++setAccessPermissions :: OsPath -> Permissions -> IO ()+setAccessPermissions path (Permissions r w e s) = do+  m <- getFileMetadata path+  setFileMode path (modifyBit (e || s) Posix.ownerExecuteMode .+                    modifyBit w Posix.ownerWriteMode .+                    modifyBit r Posix.ownerReadMode .+                    modeFromMetadata $ m)+  where+    modifyBit :: Bool -> Posix.FileMode -> Posix.FileMode -> Posix.FileMode+    modifyBit False b m = m .&. complement b+    modifyBit True  b m = m .|. b++copyOwnerFromStatus :: Posix.FileStatus -> OsPath -> IO ()+copyOwnerFromStatus st (OsString dst) = do+  Posix.setOwnerAndGroup dst (Posix.fileOwner st) (-1)++copyGroupFromStatus :: Posix.FileStatus -> OsPath -> IO ()+copyGroupFromStatus st (OsString dst) = do+  Posix.setOwnerAndGroup dst (-1) (Posix.fileGroup st)++tryCopyOwnerAndGroupFromStatus :: Posix.FileStatus -> OsPath -> IO ()+tryCopyOwnerAndGroupFromStatus st dst = do+  ignoreIOExceptions (copyOwnerFromStatus st dst)+  ignoreIOExceptions (copyGroupFromStatus st dst)++-- | Truncate the destination file and then copy the contents of the source+-- file to the destination file.  If the destination file already exists, its+-- attributes shall remain unchanged.  Otherwise, its attributes are reset to+-- the defaults.+copyFileContents :: OsPath              -- ^ Source filename+                 -> OsPath              -- ^ Destination filename+                 -> IO ()+copyFileContents fromFPath toFPath =+  (`ioeAddLocation` "copyFileContents") `modifyIOError` do+    withBinaryFile toFPath WriteMode $ \ hTo -> do+      withBinaryFile fromFPath ReadMode $ \ hFrom -> do+        copyHandleData hFrom hTo++copyFileWithMetadataInternal :: (Metadata -> OsPath -> IO ())+                             -> (Metadata -> OsPath -> IO ())+                             -> OsPath+                             -> OsPath+                             -> IO ()+copyFileWithMetadataInternal copyPermissionsFromMetadata+                             copyTimesFromMetadata+                             src+                             dst = do+  st <- Posix.getFileStatus (getOsString src)+  copyFileContents src dst+  tryCopyOwnerAndGroupFromStatus st dst+  copyPermissionsFromMetadata st dst+  copyTimesFromMetadata st dst++setTimes :: OsPath -> (Maybe POSIXTime, Maybe POSIXTime) -> IO ()+#ifdef HAVE_UTIMENSAT+setTimes (OsString path') (atime', mtime') =+  Posix.withFilePath path' $ \ path'' ->+  withArray [ maybe utimeOmit toCTimeSpec atime'+            , maybe utimeOmit toCTimeSpec mtime' ] $ \ times ->+  Posix.throwErrnoPathIfMinus1_ "" path' $+    c_utimensat c_AT_FDCWD path'' times 0+#else+setTimes (OsString path') (Just atime', Just mtime') =+  Posix.setFileTimesHiRes path' atime' mtime'+setTimes (OsString path') (atime', mtime') = do+  m <- getFileMetadata (OsString path')+  let atimeOld = accessTimeFromMetadata m+  let mtimeOld = modificationTimeFromMetadata m+  Posix.setFileTimesHiRes path'+    (fromMaybe (POSIXTime.utcTimeToPOSIXSeconds atimeOld) atime')+    (fromMaybe (POSIXTime.utcTimeToPOSIXSeconds mtimeOld) mtime')+#endif++lookupEnvOs :: OsString -> IO (Maybe OsString)+lookupEnvOs (OsString name) = (OsString <$>) <$> Posix.getEnv name++getEnvOs :: OsString -> IO OsString+getEnvOs name = do+  env <- lookupEnvOs name+  case env of+    Nothing ->+      throwIO $+        mkIOError+          doesNotExistErrorType+          ("env var " <> show name <> " not found")+          Nothing+          Nothing+    Just value -> pure value++-- | $HOME is preferred, because the user has control over it. However, POSIX+-- doesn't define it as a mandatory variable, so fall back to `getpwuid_r`.+getHomeDirectoryInternal :: IO OsPath+getHomeDirectoryInternal = do+  e <- lookupEnvOs (os "HOME")+  case e of+    Just fp -> pure fp+    Nothing ->+      OsPath.fromBytes . Posix.homeDirectory =<<+        Posix.getUserEntryForID =<<+        Posix.getEffectiveUserID++getXdgDirectoryFallback :: IO OsPath -> XdgDirectory -> IO OsPath+getXdgDirectoryFallback getHomeDirectory xdgDir = do+  (<$> getHomeDirectory) $ flip (</>) $ case xdgDir of+    XdgData   -> os ".local/share"+    XdgConfig -> os ".config"+    XdgCache  -> os ".cache"+    XdgState  -> os ".local/state"++getXdgDirectoryListFallback :: XdgDirectoryList -> IO [OsPath]+getXdgDirectoryListFallback xdgDirs =+  pure $ case xdgDirs of+    XdgDataDirs   -> [os "/usr/local/share/", os "/usr/share/"]+    XdgConfigDirs -> [os "/etc/xdg"]++getAppUserDataDirectoryInternal :: OsPath -> IO OsPath+getAppUserDataDirectoryInternal appName =+  (\ home -> home <> (os "/" <> os "." <> appName)) <$> getHomeDirectoryInternal++getUserDocumentsDirectoryInternal :: IO OsPath+getUserDocumentsDirectoryInternal = getHomeDirectoryInternal++getTemporaryDirectoryInternal :: IO OsPath+getTemporaryDirectoryInternal =+  fromMaybe (os "/tmp") <$> lookupEnvOs (os "TMPDIR")  #endif
System/Directory/Internal/Prelude.hs view
@@ -1,11 +1,12 @@-{-# LANGUAGE CPP #-} {-# OPTIONS_HADDOCK hide #-}+-- |+-- Stability: unstable+-- Portability: portable+--+-- Internal modules are always subject to change from version to version.+ module System.Directory.Internal.Prelude   ( module Prelude-#if !MIN_VERSION_base(4, 8, 0)-  , module Control.Applicative-  , module Data.Functor-#endif   , module Control.Arrow   , module Control.Concurrent   , module Control.Exception@@ -26,20 +27,11 @@   , module System.Exit   , module System.IO   , module System.IO.Error-  , module System.Posix.Internals   , module System.Posix.Types   , module System.Timeout   , Void   ) where-#if !MIN_VERSION_base(4, 6, 0)-import Prelude hiding (catch)-#endif-#if MIN_VERSION_base(4, 8, 0) import Data.Void (Void)-#else-import Control.Applicative ((<*>), pure)-import Data.Functor ((<$>), (<$))-#endif import Control.Arrow (second) import Control.Concurrent   ( forkIO@@ -48,11 +40,14 @@   , putMVar   , readMVar   , takeMVar+  , forkFinally   ) import Control.Exception-  ( SomeException+  ( Exception(displayException)+  , SomeException   , bracket   , bracket_+  , bracketOnError   , catch   , finally   , mask@@ -60,10 +55,10 @@   , throwIO   , try   )-import Control.Monad ((>=>), (<=<), unless, when, replicateM_)+import Control.Monad ((>=>), (<=<), unless, when, replicateM, replicateM_) import Data.Bits ((.&.), (.|.), complement)-import Data.Char (isAlpha, isAscii, toLower)-import Data.Foldable (for_, traverse_)+import Data.Char (isAlpha, isAscii, toLower, toUpper)+import Data.Foldable (for_, sequenceA_) import Data.Function (on) import Data.Maybe (catMaybes, fromMaybe, maybeToList) import Data.Monoid ((<>), mconcat, mempty)@@ -85,11 +80,13 @@   , allocaArray   , allocaBytes   , allocaBytesAligned+  , mallocForeignPtrBytes   , maybeWith   , nullPtr   , plusPtr   , with   , withArray+  , withForeignPtr   ) import Foreign.C   ( CInt(..)@@ -101,24 +98,20 @@   , CUShort(..)   , CWString   , CWchar(..)-  , peekCString-  , peekCWStringLen   , throwErrnoIfMinus1Retry_   , throwErrnoIfMinus1_   , throwErrnoIfNull-  , throwErrnoPathIfMinus1_-  , withCString-  , withCWString   ) import GHC.IO.Exception   ( IOErrorType     ( InappropriateType+    , InvalidArgument     , OtherError     , UnsupportedOperation     )   ) import GHC.IO.Encoding (getFileSystemEncoding)-import System.Environment (getArgs, getEnv)+import System.Environment (getArgs) import System.Exit (exitFailure) import System.IO   ( Handle@@ -129,14 +122,14 @@   , hPutBuf   , hPutStr   , hPutStrLn-  , openBinaryTempFile   , stderr   , stdout-  , withBinaryFile   ) import System.IO.Error   ( IOError   , catchIOError+  , doesNotExistErrorType+  , illegalOperationErrorType   , ioeGetErrorString   , ioeGetErrorType   , ioeGetLocation@@ -145,6 +138,7 @@   , ioeSetLocation   , isAlreadyExistsError   , isDoesNotExistError+  , isIllegalOperation   , isPermissionError   , mkIOError   , modifyIOError@@ -152,21 +146,5 @@   , tryIOError   , userError   )-import System.Posix.Internals-  ( CStat-  , c_stat-  , withFilePath-  , s_isdir-  , sizeof_stat-  , st_mode-  , st_size-  )-import System.Posix.Types (CMode(..), EpochTime, FileMode)+import System.Posix.Types (CMode, EpochTime) import System.Timeout (timeout)--#if !MIN_VERSION_base(4, 8, 0)-data Void = Void--_unusedVoid :: Void-_unusedVoid = Void-#endif
System/Directory/Internal/Windows.hsc view
@@ -1,79 +1,156 @@ {-# LANGUAGE CPP #-} module System.Directory.Internal.Windows where #include <HsDirectoryConfig.h>-#ifdef mingw32_HOST_OS-##if defined i386_HOST_ARCH+#if defined(mingw32_HOST_OS)+##if defined(i386_HOST_ARCH) ## define WINAPI stdcall-##elif defined x86_64_HOST_ARCH+##elif defined(x86_64_HOST_ARCH) || defined(aarch64_HOST_ARCH) ## define WINAPI ccall ##else ## error unknown architecture ##endif #include <shlobj.h> #include <windows.h>-#ifdef HAVE_SYS_STAT_H-# include <sys/stat.h>-#endif+#include <HsBaseConfig.h>+#include <System/Directory/Internal/windows_ext.h> import Prelude () import System.Directory.Internal.Prelude-import System.FilePath (isRelative, normalise, splitDirectories)-import qualified System.Win32 as Win32--win32_cSIDL_LOCAL_APPDATA :: Win32.CSIDL-#if MIN_VERSION_Win32(2, 3, 1)-win32_cSIDL_LOCAL_APPDATA = Win32.cSIDL_LOCAL_APPDATA-#else-win32_cSIDL_LOCAL_APPDATA = (#const CSIDL_LOCAL_APPDATA)+import System.Directory.Internal.Common+import System.Directory.Internal.Config (exeExtension)+import Data.Time (UTCTime)+import Data.Time.Clock.POSIX (POSIXTime, posixSecondsToUTCTime)+#ifdef __IO_MANAGER_WINIO__+import GHC.IO.SubSystem (IoSubSystem(IoPOSIX, IoNative), ioSubSystem) #endif+import System.OsPath+  ( (</>)+  , hasExtension+  , isExtensionOf+  , isPathSeparator+  , isRelative+  , pack+  , pathSeparator+  , splitDirectories+  , splitSearchPath+  , takeExtension+  , toChar+  , unpack+  )+import System.OsPath.Types (WindowsPath, WindowsString)+import System.OsString.Internal.Types (OsString(OsString, getOsString))+import qualified Data.List as List+import qualified System.Win32.WindowsString.File as Win32+import qualified System.Win32.WindowsString.Info as Win32+import qualified System.Win32.WindowsString.Shell as Win32+import qualified System.Win32.WindowsString.Time as Win32+import qualified System.Win32.WindowsString.Types as Win32+import qualified System.Win32.WindowsString.Console as Win32 -win32_fILE_ATTRIBUTE_REPARSE_POINT :: Win32.FileAttributeOrFlag-win32_fILE_ATTRIBUTE_REPARSE_POINT = (#const FILE_ATTRIBUTE_REPARSE_POINT)+type RawHandle = OsPath -win32_fILE_SHARE_DELETE :: Win32.ShareMode-#if MIN_VERSION_Win32(2, 3, 1)-win32_fILE_SHARE_DELETE = Win32.fILE_SHARE_DELETE -- added in 2.3.0.2-#else-win32_fILE_SHARE_DELETE = (#const FILE_SHARE_DELETE)-#endif+pathAt :: Maybe RawHandle -> OsPath -> OsPath+pathAt dir path = fromMaybe mempty dir </> path -win32_getLongPathName, win32_getShortPathName :: FilePath -> IO FilePath-#if MIN_VERSION_Win32(2, 4, 0)-win32_getLongPathName = Win32.getLongPathName-win32_getShortPathName = Win32.getShortPathName-#else-win32_getLongPathName path =-  modifyIOError ((`ioeSetLocation` "GetLongPathName") .-                 (`ioeSetFileName` path)) $ do-    withCWString path $ \ ptrPath -> do-      getPathNameWith (c_GetLongPathName ptrPath)+openRaw :: WhetherFollow -> Maybe RawHandle -> OsPath -> IO RawHandle+openRaw _ dir path = pure (pathAt dir path) -win32_getShortPathName path =-  modifyIOError ((`ioeSetLocation` "GetShortPathName") .-                 (`ioeSetFileName` path)) $ do-    withCWString path $ \ ptrPath -> do-      getPathNameWith (c_GetShortPathName ptrPath)+closeRaw :: RawHandle -> IO ()+closeRaw _ = pure () -foreign import WINAPI unsafe "windows.h GetLongPathNameW"-  c_GetLongPathName-    :: Ptr CWchar-    -> Ptr CWchar-    -> Win32.DWORD-    -> IO Win32.DWORD+lookupEnvOs :: OsString -> IO (Maybe OsString)+lookupEnvOs (OsString name) = (OsString <$>) <$> Win32.getEnv name -foreign import WINAPI unsafe "windows.h GetShortPathNameW"-  c_GetShortPathName-    :: Ptr CWchar-    -> Ptr CWchar-    -> Win32.DWORD-    -> IO Win32.DWORD-#endif+getEnvOs :: OsString -> IO OsString+getEnvOs name = do+  env <- lookupEnvOs name+  case env of+    Nothing ->+      throwIO $+        mkIOError+          doesNotExistErrorType+          ("env var " <> show name <> " not found")+          Nothing+          Nothing+    Just value -> pure value -win32_getFinalPathNameByHandle :: Win32.HANDLE -> Win32.DWORD -> IO FilePath-win32_getFinalPathNameByHandle _h _flags =-  modifyIOError (`ioeSetLocation` "GetFinalPathNameByHandle") $ do+-- | Get the contents of the @PATH@ environment variable.+getPath :: IO [OsPath]+getPath = splitSearchPath <$> getEnvOs (os "PATH")++createDirectoryInternal :: OsPath -> IO ()+createDirectoryInternal path =+  (`ioeSetOsPath` path) `modifyIOError` do+    path' <- furnishPath path+    Win32.createDirectory path' Nothing++removePathAt :: FileType -> Maybe RawHandle -> OsPath -> IO ()+removePathAt ty dir path = removePathInternal isDir (pathAt dir path)+  where isDir = fileTypeIsDirectory ty++removePathInternal :: Bool -> OsPath -> IO ()+removePathInternal isDir path =+  (`ioeSetOsPath` path) `modifyIOError` do+    furnishPath path+      >>= if isDir then Win32.removeDirectory else Win32.deleteFile++renamePathInternal :: OsPath -> OsPath -> IO ()+renamePathInternal opath npath =+  (`ioeSetOsPath` opath) `modifyIOError` do+    opath' <- furnishPath opath+    npath' <- furnishPath npath+    Win32.moveFileEx opath' (Just npath') Win32.mOVEFILE_REPLACE_EXISTING++-- On Windows, the removability of a file may be affected by the attributes of+-- the file itself.+filesAlwaysRemovable :: Bool+filesAlwaysRemovable = False++copyFileWithMetadataInternal :: (Metadata -> OsPath -> IO ())+                             -> (Metadata -> OsPath -> IO ())+                             -> OsPath+                             -> OsPath+                             -> IO ()+copyFileWithMetadataInternal _ _ src dst =+  (`ioeSetOsPath` src) `modifyIOError` do+    src' <- furnishPath src+    dst' <- furnishPath dst+    Win32.copyFile src' dst' False++win32_cSIDL_COMMON_APPDATA :: Win32.CSIDL+win32_cSIDL_COMMON_APPDATA = (#const CSIDL_COMMON_APPDATA)++win32_eRROR_ENVVAR_NOT_FOUND :: Win32.ErrCode+win32_eRROR_ENVVAR_NOT_FOUND = (#const ERROR_ENVVAR_NOT_FOUND)++win32_eRROR_INVALID_FUNCTION :: Win32.ErrCode+win32_eRROR_INVALID_FUNCTION = (#const ERROR_INVALID_FUNCTION)++win32_eRROR_INVALID_PARAMETER :: Win32.ErrCode+win32_eRROR_INVALID_PARAMETER = (#const ERROR_INVALID_PARAMETER)++win32_eRROR_PRIVILEGE_NOT_HELD :: Win32.ErrCode+win32_eRROR_PRIVILEGE_NOT_HELD = (#const ERROR_PRIVILEGE_NOT_HELD)++win32_sYMBOLIC_LINK_FLAG_DIRECTORY :: Win32.DWORD+win32_sYMBOLIC_LINK_FLAG_DIRECTORY = 0x1++win32_sYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE :: Win32.DWORD+win32_sYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE = 0x2++maxShareMode :: Win32.ShareMode+maxShareMode =+  Win32.fILE_SHARE_DELETE .|.+  Win32.fILE_SHARE_READ   .|.+  Win32.fILE_SHARE_WRITE++win32_getFinalPathNameByHandle :: Win32.HANDLE -> Win32.DWORD -> IO WindowsPath #ifdef HAVE_GETFINALPATHNAMEBYHANDLEW-    getPathNameWith $ \ ptr len -> do-      c_GetFinalPathNameByHandle _h ptr len _flags+win32_getFinalPathNameByHandle h flags = do+  result <- peekTStringWith (#const MAX_PATH) $ \ ptr len -> do+    c_GetFinalPathNameByHandle h ptr len flags+  case result of+    Left errCode -> Win32.failWith "GetFinalPathNameByHandle" errCode+    Right path -> pure path  foreign import WINAPI unsafe "windows.h GetFinalPathNameByHandleW"   c_GetFinalPathNameByHandle@@ -84,96 +161,571 @@     -> IO Win32.DWORD  #else-    throwIO (mkIOError UnsupportedOperation-             "platform does not support GetFinalPathNameByHandle"-             Nothing Nothing)+win32_getFinalPathNameByHandle _ _ = throwIO $+  mkIOError+    UnsupportedOperation+    "platform does not support GetFinalPathNameByHandle"+    Nothing+    Nothing #endif -getFinalPathName :: FilePath -> IO FilePath+getFinalPathName :: OsPath -> IO OsPath getFinalPathName =-  (fromExtendedLengthPath <$>) . rawGetFinalPathName . toExtendedLengthPath+  (fromExtendedLengthPath <$>) .+  rawGetFinalPathName .+  toExtendedLengthPath   where #ifdef HAVE_GETFINALPATHNAMEBYHANDLEW     rawGetFinalPathName path = do-      let open = Win32.createFile path 0 shareMode Nothing+      let open = Win32.createFile path 0 maxShareMode Nothing                  Win32.oPEN_EXISTING Win32.fILE_FLAG_BACKUP_SEMANTICS Nothing       bracket open Win32.closeHandle $ \ h -> do         win32_getFinalPathNameByHandle h 0-    shareMode =-      win32_fILE_SHARE_DELETE .|.-      Win32.fILE_SHARE_READ   .|.-      Win32.fILE_SHARE_WRITE #else-    rawGetFinalPathName = win32_getLongPathName <=< win32_getShortPathName+    rawGetFinalPathName = Win32.getLongPathName <=< Win32.getShortPathName #endif --- | Add the @"\\\\?\\"@ prefix if necessary or possible.--- The path remains unchanged if the prefix is not added.-toExtendedLengthPath :: FilePath -> FilePath-toExtendedLengthPath path-  | isRelative path = path-  | otherwise =-      case normalise path of-        -- note: as of filepath-1.4.1.0 normalise doesn't honor \\?\-        -- https://github.com/haskell/filepath/issues/56-        -- this means we cannot trust the result of normalise on-        -- paths that start with \\?\-        '\\' : '\\' : '?' : '\\' : _ -> path-        '\\' : '\\' : '.' : '\\' : _ -> path-        '\\' : subpath@('\\' : _) -> "\\\\?\\UNC" <> subpath-        normalisedPath -> "\\\\?\\" <> normalisedPath+win32_fILE_FLAG_OPEN_REPARSE_POINT :: Win32.FileAttributeOrFlag+win32_fILE_FLAG_OPEN_REPARSE_POINT = 0x00200000 +win32_fSCTL_GET_REPARSE_POINT :: Win32.DWORD+win32_fSCTL_GET_REPARSE_POINT = 0x900a8++win32_iO_REPARSE_TAG_MOUNT_POINT, win32_iO_REPARSE_TAG_SYMLINK :: CULong+win32_iO_REPARSE_TAG_MOUNT_POINT = (#const IO_REPARSE_TAG_MOUNT_POINT)+win32_iO_REPARSE_TAG_SYMLINK = (#const IO_REPARSE_TAG_SYMLINK)++win32_mAXIMUM_REPARSE_DATA_BUFFER_SIZE :: Win32.DWORD+win32_mAXIMUM_REPARSE_DATA_BUFFER_SIZE =+  (#const MAXIMUM_REPARSE_DATA_BUFFER_SIZE)++win32_sYMLINK_FLAG_RELATIVE :: CULong+win32_sYMLINK_FLAG_RELATIVE = 0x00000001++data Win32_REPARSE_DATA_BUFFER+  = Win32_MOUNT_POINT_REPARSE_DATA_BUFFER WindowsString WindowsString+    -- ^ substituteName printName+  | Win32_SYMLINK_REPARSE_DATA_BUFFER WindowsString WindowsString Bool+    -- ^ substituteName printName isRelative+  | Win32_GENERIC_REPARSE_DATA_BUFFER++win32_alloca_REPARSE_DATA_BUFFER+  :: ((Ptr Win32_REPARSE_DATA_BUFFER, Int) -> IO a) -> IO a+win32_alloca_REPARSE_DATA_BUFFER action =+  allocaBytesAligned size align $ \ ptr ->+    action (ptr, size)+  where size = fromIntegral win32_mAXIMUM_REPARSE_DATA_BUFFER_SIZE+        align = #{alignment HsDirectory_REPARSE_DATA_BUFFER}++win32_peek_REPARSE_DATA_BUFFER+  :: Ptr Win32_REPARSE_DATA_BUFFER -> IO Win32_REPARSE_DATA_BUFFER+win32_peek_REPARSE_DATA_BUFFER p = do+  tag <- #{peek HsDirectory_REPARSE_DATA_BUFFER, ReparseTag} p+  case () of+    _ | tag == win32_iO_REPARSE_TAG_MOUNT_POINT -> do+          let buf = #{ptr HsDirectory_REPARSE_DATA_BUFFER,+                          MountPointReparseBuffer.PathBuffer} p+          sni <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        MountPointReparseBuffer.SubstituteNameOffset} p+          sns <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        MountPointReparseBuffer.SubstituteNameLength} p+          sn <- peekName buf sni sns+          pni <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        MountPointReparseBuffer.PrintNameOffset} p+          pns <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        MountPointReparseBuffer.PrintNameLength} p+          pn <- peekName buf pni pns+          pure (Win32_MOUNT_POINT_REPARSE_DATA_BUFFER sn pn)+      | tag == win32_iO_REPARSE_TAG_SYMLINK -> do+          let buf = #{ptr HsDirectory_REPARSE_DATA_BUFFER,+                          SymbolicLinkReparseBuffer.PathBuffer} p+          sni <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        SymbolicLinkReparseBuffer.SubstituteNameOffset} p+          sns <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        SymbolicLinkReparseBuffer.SubstituteNameLength} p+          sn <- peekName buf sni sns+          pni <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        SymbolicLinkReparseBuffer.PrintNameOffset} p+          pns <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                        SymbolicLinkReparseBuffer.PrintNameLength} p+          pn <- peekName buf pni pns+          flags <- #{peek HsDirectory_REPARSE_DATA_BUFFER,+                          SymbolicLinkReparseBuffer.Flags} p+          pure (Win32_SYMLINK_REPARSE_DATA_BUFFER sn pn+                (flags .&. win32_sYMLINK_FLAG_RELATIVE /= 0))+      | otherwise -> pure Win32_GENERIC_REPARSE_DATA_BUFFER+  where+    peekName :: Ptr CWchar -> CUShort -> CUShort -> IO WindowsString+    peekName buf offset size =+      Win32.peekTStringLen ( buf `plusPtr` fromIntegral offset+                           , fromIntegral size `div` sizeOf (0 :: CWchar) )++deviceIoControl+  :: Win32.HANDLE+  -> Win32.DWORD+  -> (Ptr a, Int)+  -> (Ptr b, Int)+  -> Maybe Void+  -> IO (Either Win32.ErrCode Int)+deviceIoControl h code (inPtr, inSize) (outPtr, outSize) _ = do+  with 0 $ \ lenPtr -> do+    ok <- c_DeviceIoControl h code inPtr (fromIntegral inSize) outPtr+                            (fromIntegral outSize) lenPtr nullPtr+    if ok+      then Right . fromIntegral <$> peek lenPtr+      else Left <$> Win32.getLastError++foreign import WINAPI unsafe "windows.h DeviceIoControl"+  c_DeviceIoControl+    :: Win32.HANDLE+    -> Win32.DWORD+    -> Ptr a+    -> Win32.DWORD+    -> Ptr b+    -> Win32.DWORD+    -> Ptr Win32.DWORD+    -> Ptr Void+    -> IO Win32.BOOL++readSymbolicLink :: OsPath -> IO OsPath+readSymbolicLink path =+  (`ioeSetOsPath` path) `modifyIOError` do+    path' <- furnishPath path+    let open = Win32.createFile path' 0 maxShareMode Nothing Win32.oPEN_EXISTING+                                (Win32.fILE_FLAG_BACKUP_SEMANTICS .|.+                                win32_fILE_FLAG_OPEN_REPARSE_POINT) Nothing+    bracket open Win32.closeHandle $ \ h -> do+      win32_alloca_REPARSE_DATA_BUFFER $ \ ptrAndSize@(ptr, _) -> do+        result <- deviceIoControl h win32_fSCTL_GET_REPARSE_POINT+                                  (nullPtr, 0) ptrAndSize Nothing+        case result of+          Left e | e == win32_eRROR_INVALID_FUNCTION -> do+                     let msg = "Incorrect function. The file system " <>+                               "might not support symbolic links."+                     throwIO (mkIOError illegalOperationErrorType+                                        "DeviceIoControl" Nothing Nothing+                              `ioeSetErrorString` msg)+                 | otherwise -> Win32.failWith "DeviceIoControl" e+          Right _ -> pure ()+        rData <- win32_peek_REPARSE_DATA_BUFFER ptr+        strip . OsString <$> case rData of+          Win32_MOUNT_POINT_REPARSE_DATA_BUFFER sn _ -> pure sn+          Win32_SYMLINK_REPARSE_DATA_BUFFER sn _ _ -> pure sn+          _ -> throwIO (mkIOError InappropriateType+                                  "readSymbolicLink" Nothing Nothing)+  where+    strip sn =+      fromMaybe sn+        (pack <$> List.stripPrefix (unpack (os "\\??\\")) (unpack sn))++-- | On Windows, equivalent to 'simplifyWindows'.+simplify :: OsPath -> OsPath+simplify = simplifyWindows++-- | Normalise the path separators and prepend the @"\\\\?\\"@ prefix if+-- necessary or possible.  This is used for symbolic links targets because+-- they can't handle forward slashes.+normaliseSeparators :: OsPath -> WindowsPath+normaliseSeparators path+  | isRelative path = getOsString (pack (normaliseSep <$> unpack path))+  | otherwise = toExtendedLengthPath path+  where normaliseSep c = if isPathSeparator c then pathSeparator else c++-- | 'simplify' the path and prepend the @"\\\\?\\"@ if possible.  This+-- function can sometimes be used to bypass the @MAX_PATH@ length restriction+-- in Windows API calls.+toExtendedLengthPath :: OsPath -> WindowsPath+toExtendedLengthPath path =+  getOsString $+  if isRelative path+  then simplifiedPath+  else+    case toChar <$> simplifiedPath' of+      '\\' : '?'  : '?' : '\\' : _ -> simplifiedPath+      '\\' : '\\' : _ -> simplifiedPath+      _ -> os "\\\\?\\" <> simplifiedPath+  where simplifiedPath = simplify path+        simplifiedPath' = unpack simplifiedPath++-- | Make a path absolute and convert to an extended length path, if possible.+--+-- Empty paths are left unchanged.+--+-- This function never fails.  If it doesn't understand the path, it just+-- returns the path unchanged.+furnishPath :: OsPath -> IO WindowsPath+furnishPath path =+  (toExtendedLengthPath <$> rawPrependCurrentDirectory path)+    `catchIOError` \ _ ->+      pure (getOsString path)+ -- | Strip the @"\\\\?\\"@ prefix if possible. -- The prefix is kept if the meaning of the path would otherwise change.-fromExtendedLengthPath :: FilePath -> FilePath-fromExtendedLengthPath ePath =-  case ePath of-    '\\' : '\\' : '?' : '\\' : path ->+fromExtendedLengthPath :: WindowsPath -> OsPath+fromExtendedLengthPath ePath' =+  case unpack ePath of+    c1 : c2 : c3 : c4 : path+      | (toChar <$> [c1, c2, c3, c4]) == "\\\\?\\" ->       case path of-        'U' : 'N' : 'C' : subpath@('\\' : _) -> "\\" <> subpath-        drive : ':' : subpath+        c5 : c6 : c7 : subpath@(c8 : _)+          | (toChar <$> [c5, c6, c7, c8]) == "UNC\\" ->+            pack (c8 : subpath)+        drive : col : subpath           -- if the path is not "regular", then the prefix is necessary           -- to ensure the path is interpreted literally-          | isAlpha drive && isAscii drive && isPathRegular subpath -> path+          | toChar col == ':', isDriveChar drive, isPathRegular subpath ->+            pack path         _ -> ePath     _ -> ePath   where+    ePath = OsString ePath'+    isDriveChar drive = isAlpha (toChar drive) && isAscii (toChar drive)     isPathRegular path =-      not ('/' `elem` path ||-           "." `elem` splitDirectories path ||-           ".." `elem` splitDirectories path)+      not ('/' `elem` (toChar <$> path) ||+           os "." `elem` splitDirectories (pack path) ||+           os ".." `elem` splitDirectories (pack path)) -getPathNameWith :: (Ptr CWchar -> Win32.DWORD -> IO Win32.DWORD) -> IO FilePath-getPathNameWith cFunc = do-  let getPathNameWithLen len = do-        allocaArray (fromIntegral len) $ \ ptrPathOut -> do-          len' <- Win32.failIfZero "" (cFunc ptrPathOut len)-          if len' <= len-            then Right <$> peekCWStringLen (ptrPathOut, fromIntegral len')-            else pure (Left len')-  r <- getPathNameWithLen ((#const MAX_PATH) * (#size wchar_t))-  case r of-    Right s -> pure s-    Left len -> do-      r' <- getPathNameWithLen len-      case r' of-        Right s -> pure s-        Left _ -> ioError (mkIOError OtherError "" Nothing Nothing-                           `ioeSetErrorString` "path changed unexpectedly")+saturatingDouble :: Win32.DWORD -> Win32.DWORD+saturatingDouble s | s > maxBound `div` 2 = maxBound+                   | otherwise            = s * 2 -foreign import ccall unsafe "_wchmod"-  c_wchmod :: CWString -> CMode -> IO CInt+-- Handles Windows APIs that write strings through a user-provided buffer and+-- can propose a new length when it isn't big enough. This is similar to+-- Win32.try, but also returns the precise error code.+peekTStringWith :: Win32.DWORD+                -> (Win32.LPTSTR -> Win32.DWORD -> IO Win32.DWORD)+                -- ^ Must accept a buffer and its size in TCHARs. If the+                --   buffer is large enough for the function, it must write a+                --   string to it, which need not be null-terminated, and+                --   return the length of the string, not including the null+                --   terminator if present. If the buffer is too small, it+                --   must return a proposed buffer size in TCHARs, although it+                --   need not guarantee success with the proposed size if,+                --   say, the underlying data changes in the interim. If it+                --   fails for any other reason, it must return zero and+                --   communicate the error code through GetLastError.+                -> IO (Either Win32.ErrCode WindowsPath)+peekTStringWith bufferSize cFunc = do+  outcome <- do+    allocaArray (fromIntegral bufferSize) $ \ ptr -> do+      size <- cFunc ptr bufferSize+      case size of+        0 -> Right . Left <$> Win32.getLastError+        _ | size <= bufferSize ->+              Right . Right <$> Win32.peekTStringLen (ptr, fromIntegral size)+          | otherwise ->+              -- At least double the size to ensure fast termination.+              pure (Left (max size (saturatingDouble bufferSize)))+  case outcome of+    Left proposedSize -> peekTStringWith proposedSize cFunc+    Right result      -> pure result -s_IRUSR :: CMode-s_IRUSR = (#const S_IRUSR)+realPath :: OsPath -> IO OsPath+realPath = getFinalPathName -s_IWUSR :: CMode-s_IWUSR = (#const S_IWUSR)+canonicalizePathSimplify :: OsPath -> IO OsPath+canonicalizePathSimplify path =+  getFullPathName path+    `catchIOError` \ _ ->+      pure path -s_IXUSR :: CMode-s_IXUSR = (#const S_IXUSR)+searchPathEnvForExes :: OsString -> IO (Maybe OsPath)+searchPathEnvForExes binaryPath@(OsString binary) = do+  maybePath <- search+    `catch` \e ->+      if ioeGetErrorType e == InvalidArgument+      then pure Nothing+      else throwIO e+  pure (OsString <$> maybePath >>= verify)+ where+  search = Win32.searchPath Nothing binary (Just (getOsString exeExtension))+  verify p+    | hasExtension binaryPath || exeExtension `isExtensionOf` p = Just p+    | otherwise = Nothing -s_IFDIR :: CMode-s_IFDIR = (#const S_IFDIR)+findExecutablesLazyInternal :: ([OsPath] -> OsString -> ListT IO OsPath)+                            -> OsString+                            -> ListT IO OsPath+findExecutablesLazyInternal _ = maybeToListT . searchPathEnvForExes++exeExtensionInternal :: OsString+exeExtensionInternal = exeExtension++readDirToEnd :: RawHandle -> IO [OsPath]+readDirToEnd = getDirectoryContentsInternal++getDirectoryContentsInternal :: OsPath -> IO [OsPath]+getDirectoryContentsInternal path = do+  query <- furnishPath (path </> os "*")+  bracket+    (Win32.findFirstFile query)+    (\ (h, _) -> Win32.findClose h)+    (\ (h, fdat) -> loop h fdat [])+  where+    -- we needn't worry about empty directories: a directory always+    -- has at least "." and ".." entries+    loop :: Win32.HANDLE -> Win32.FindData -> [OsPath] -> IO [OsPath]+    loop h fdat acc = do+      filename <- Win32.getFindDataFileName fdat+      more <- Win32.findNextFile h fdat+      if more+        then loop h fdat (OsString filename : acc)+        else pure (OsString filename : acc)+             -- no need to reverse, ordering is undefined++getCurrentDirectoryInternal :: IO OsPath+getCurrentDirectoryInternal = OsString <$> Win32.getCurrentDirectory++getFullPathName :: OsPath -> IO OsPath+getFullPathName path =+  fromExtendedLengthPath <$> Win32.getFullPathName (toExtendedLengthPath path)++-- | Similar to 'prependCurrentDirectory' but fails for empty paths.+rawPrependCurrentDirectory :: OsPath -> IO OsPath+rawPrependCurrentDirectory path+  | isRelative path =+    ((`ioeAddLocation` "prependCurrentDirectory") .+     (`ioeSetOsPath` path)) `modifyIOError` do+      getFullPathName path+  | otherwise = pure path++-- | Convert a path into an absolute path.  If the given path is relative, the+-- current directory is prepended and the path may or may not be simplified.+-- If the path is already absolute, the path is returned unchanged.  The+-- function preserves the presence or absence of the trailing path separator.+--+-- If the path is already absolute, the operation never fails.  Otherwise, the+-- operation may throw exceptions.+--+-- Empty paths are treated as the current directory.+prependCurrentDirectory :: OsPath -> IO OsPath+prependCurrentDirectory = rawPrependCurrentDirectory . emptyToCurDir++-- SetCurrentDirectory does not support long paths even with the \\?\ prefix+-- https://ghc.haskell.org/trac/ghc/ticket/13373#comment:6+setCurrentDirectoryInternal :: OsPath -> IO ()+setCurrentDirectoryInternal = Win32.setCurrentDirectory . getOsString++createSymbolicLinkUnpriv :: WindowsPath -> WindowsPath -> Bool -> IO ()+createSymbolicLinkUnpriv link _target _isDir =+#ifdef HAVE_CREATESYMBOLICLINKW+  Win32.withTString link $ \ pLink ->+  Win32.withTString _target $ \ pTarget -> do+    let flags = if _isDir then win32_sYMBOLIC_LINK_FLAG_DIRECTORY else 0+    call pLink pTarget flags win32_sYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE+  where+    call pLink pTarget flags unpriv = do+      status <- c_CreateSymbolicLink pLink pTarget (flags .|. unpriv)+      when (status == 0) $ do+        e <- Win32.getLastError+        case () of+          _ | e == win32_eRROR_INVALID_FUNCTION -> do+                let msg = "Incorrect function. The underlying file system " <>+                          "might not support symbolic links."+                throwIO (mkIOError illegalOperationErrorType+                                   "CreateSymbolicLink" Nothing Nothing+                         `ioeSetOsPath` OsString link+                         `ioeSetErrorString` msg)+            | e == win32_eRROR_PRIVILEGE_NOT_HELD -> do+                let msg = "A required privilege is not held by the client. " <>+                          "Creating symbolic links usually requires " <>+                          "administrative rights."+                throwIO (mkIOError permissionErrorType "CreateSymbolicLink"+                                   Nothing Nothing+                         `ioeSetOsPath` OsString link+                         `ioeSetErrorString` msg)+            | e == win32_eRROR_INVALID_PARAMETER &&+              unpriv /= 0 ->+                -- for compatibility with older versions of Windows,+                -- try it again without the flag+                call pLink pTarget flags 0+            | otherwise -> Win32.failWith "CreateSymbolicLink" e++foreign import WINAPI unsafe "windows.h CreateSymbolicLinkW"+  c_CreateSymbolicLink+    :: Ptr CWchar -> Ptr CWchar -> Win32.DWORD -> IO Win32.BYTE++#else+  throwIO . (`ioeSetErrorString` unsupportedErrorMsg)+          . (`ioeSetOsPath` OsString link) $+               mkIOError UnsupportedOperation "CreateSymbolicLink"+                         Nothing Nothing+  where unsupportedErrorMsg = "Not supported on Windows XP or older"+#endif++linkToDirectoryIsDirectory :: Bool+linkToDirectoryIsDirectory = True++createSymbolicLink :: Bool -> OsPath -> OsPath -> IO ()+createSymbolicLink isDir target link =+  (`ioeSetOsPath` link) `modifyIOError` do+    -- normaliseSeparators ensures the target gets normalised properly+    link' <- furnishPath link+    createSymbolicLinkUnpriv+      link'+      (normaliseSeparators target)+      isDir++type Metadata = Win32.BY_HANDLE_FILE_INFORMATION++getMetadataAt :: WhetherFollow -> Maybe RawHandle -> OsPath -> IO Metadata+getMetadataAt NoFollow    dir path = getSymbolicLinkMetadata (pathAt dir path)+getMetadataAt FollowLinks dir path = getFileMetadata         (pathAt dir path)++getSymbolicLinkMetadata :: OsPath -> IO Metadata+getSymbolicLinkMetadata path =+  (`ioeSetOsPath` path) `modifyIOError` do+    path' <- furnishPath path+    let open = Win32.createFile path' 0 maxShareMode Nothing Win32.oPEN_EXISTING+                                (Win32.fILE_FLAG_BACKUP_SEMANTICS .|.+                                 win32_fILE_FLAG_OPEN_REPARSE_POINT) Nothing+    bracket open Win32.closeHandle $ \ h -> do+      Win32.getFileInformationByHandle h++getFileMetadata :: OsPath -> IO Metadata+getFileMetadata path =+  (`ioeSetOsPath` path) `modifyIOError` do+    path' <- furnishPath path+    let open = Win32.createFile path' 0 maxShareMode Nothing Win32.oPEN_EXISTING+                                Win32.fILE_FLAG_BACKUP_SEMANTICS Nothing+    bracket open Win32.closeHandle $ \ h -> do+      Win32.getFileInformationByHandle h++fileTypeFromMetadata :: Metadata -> FileType+fileTypeFromMetadata info+  | isLink    = if isDir then DirectoryLink else SymbolicLink+  | isDir     = Directory+  | otherwise = File+  where+    isLink = attrs .&. Win32.fILE_ATTRIBUTE_REPARSE_POINT /= 0+    isDir  = attrs .&. Win32.fILE_ATTRIBUTE_DIRECTORY /= 0+    attrs  = Win32.bhfiFileAttributes info++fileSizeFromMetadata :: Metadata -> Integer+fileSizeFromMetadata = fromIntegral . Win32.bhfiSize++accessTimeFromMetadata :: Metadata -> UTCTime+accessTimeFromMetadata =+  posixSecondsToUTCTime . windowsToPosixTime . Win32.bhfiLastAccessTime++modificationTimeFromMetadata :: Metadata -> UTCTime+modificationTimeFromMetadata =+  posixSecondsToUTCTime . windowsToPosixTime . Win32.bhfiLastWriteTime++-- | Difference between the Windows and POSIX epochs in units of 100ns.+windowsPosixEpochDifference :: Num a => a+windowsPosixEpochDifference = 116444736000000000++-- | Convert from Windows time to POSIX time.+windowsToPosixTime :: Win32.FILETIME -> POSIXTime+windowsToPosixTime (Win32.FILETIME t) =+  (fromIntegral t - windowsPosixEpochDifference) / 10000000++-- | Convert from POSIX time to Windows time.  This is lossy as Windows time+--   has a resolution of only 100ns.+posixToWindowsTime :: POSIXTime -> Win32.FILETIME+posixToWindowsTime t = Win32.FILETIME $+  truncate (t * 10000000 + windowsPosixEpochDifference)++setTimes :: OsPath -> (Maybe POSIXTime, Maybe POSIXTime) -> IO ()+setTimes path' (atime', mtime') =+  bracket (openFileHandle path' Win32.gENERIC_WRITE)+          Win32.closeHandle $ \ handle ->+  Win32.setFileTime+    handle+    Nothing+    (posixToWindowsTime <$> atime')+    (posixToWindowsTime <$> mtime')++-- | Open the handle of an existing file or directory.+openFileHandle :: OsString -> Win32.AccessMode -> IO Win32.HANDLE+openFileHandle path mode =+  (`ioeSetOsPath` path) `modifyIOError` do+    path' <- furnishPath path+    Win32.createFile path' mode maxShareMode Nothing+                     Win32.oPEN_EXISTING flags Nothing+  where flags =  Win32.fILE_ATTRIBUTE_NORMAL+             .|. Win32.fILE_FLAG_BACKUP_SEMANTICS -- required for directories++type Mode = Win32.FileAttributeOrFlag++modeFromMetadata :: Metadata -> Mode+modeFromMetadata = Win32.bhfiFileAttributes++hasWriteMode :: Mode -> Bool+hasWriteMode m = m .&. Win32.fILE_ATTRIBUTE_READONLY == 0++setWriteMode :: Bool -> Mode -> Mode+setWriteMode False m = m .|. Win32.fILE_ATTRIBUTE_READONLY+setWriteMode True  m = m .&. complement Win32.fILE_ATTRIBUTE_READONLY++setForceRemoveMode :: Mode -> Mode+setForceRemoveMode m = m .&. complement Win32.fILE_ATTRIBUTE_READONLY++setModeAt :: Maybe RawHandle -> OsPath -> Mode -> IO ()+setModeAt dir path = setFileMode (pathAt dir path)++setFileMode :: OsPath -> Mode -> IO ()+setFileMode path mode =+  (`ioeSetOsPath` path) `modifyIOError` do+    path' <- furnishPath path+    Win32.setFileAttributes path' mode++-- | A restricted form of 'setFileMode' that only sets the permission bits.+-- For Windows, this means only the "read-only" attribute is affected.+setFilePermissions :: OsPath -> Mode -> IO ()+setFilePermissions path m = do+  m' <- modeFromMetadata <$> getFileMetadata path+  setFileMode path ((m' .&. complement Win32.fILE_ATTRIBUTE_READONLY) .|.+                    (m  .&. Win32.fILE_ATTRIBUTE_READONLY))++getAccessPermissions :: OsPath -> IO Permissions+getAccessPermissions path = do+  m <- getFileMetadata path+  let isDir = fileTypeIsDirectory (fileTypeFromMetadata m)+  let w = hasWriteMode (modeFromMetadata m)+  let x = (toLower . toChar <$> unpack (takeExtension path))+          `elem` [".bat", ".cmd", ".com", ".exe"]+  pure Permissions+       { readable   = True+       , writable   = w+       , executable = x && not isDir+       , searchable = isDir+       }++setAccessPermissions :: OsPath -> Permissions -> IO ()+setAccessPermissions path Permissions{writable = w} = do+  setFilePermissions path (setWriteMode w 0)++getFolderPath :: Win32.CSIDL -> IO OsPath+getFolderPath what = OsString <$> Win32.sHGetFolderPath nullPtr what nullPtr 0++getHomeDirectoryInternal :: IO OsPath+getHomeDirectoryInternal =+  getFolderPath Win32.cSIDL_PROFILE `catchIOError` \ _ ->+    getFolderPath Win32.cSIDL_WINDOWS++getXdgDirectoryFallback :: IO OsPath -> XdgDirectory -> IO OsPath+getXdgDirectoryFallback _ xdgDir = do+  case xdgDir of+    XdgData   -> getFolderPath Win32.cSIDL_APPDATA+    XdgConfig -> getFolderPath Win32.cSIDL_APPDATA+    XdgCache  -> getFolderPath Win32.cSIDL_LOCAL_APPDATA+    XdgState  -> getFolderPath Win32.cSIDL_LOCAL_APPDATA++getXdgDirectoryListFallback :: XdgDirectoryList -> IO [OsPath]+getXdgDirectoryListFallback _ =+  pure <$> getFolderPath win32_cSIDL_COMMON_APPDATA++getAppUserDataDirectoryInternal :: OsPath -> IO OsPath+getAppUserDataDirectoryInternal appName =+  (\ appData -> appData <> (os "\\" <> appName))+  <$> getXdgDirectoryFallback getHomeDirectoryInternal XdgData++getUserDocumentsDirectoryInternal :: IO OsPath+getUserDocumentsDirectoryInternal = getFolderPath Win32.cSIDL_PERSONAL++getTemporaryDirectoryInternal :: IO OsPath+getTemporaryDirectoryInternal = OsString <$> Win32.getTemporaryDirectory  #endif
− System/Directory/Internal/utility.h 
@@ -1,6 +0,0 @@-#if !defined alignof && __cplusplus < 201103L-# ifdef STDC_HEADERS-#  include <stddef.h>-# endif-# define alignof(x) offsetof(struct { char c; x m; }, m)-#endif
+ System/Directory/Internal/windows_ext.h view
@@ -0,0 +1,33 @@+#ifndef HS_DIRECTORY_WINDOWS_EXT_H+#define HS_DIRECTORY_WINDOWS_EXT_H+#include <windows.h>++// define prototype to get size, offsets, and alignments+// (can't include <ntifs.h> because that only exists in WDK)+typedef struct {+    ULONG ReparseTag;+    USHORT ReparseDataLength;+    USHORT Reserved;+    union {+        struct {+            USHORT SubstituteNameOffset;+            USHORT SubstituteNameLength;+            USHORT PrintNameOffset;+            USHORT PrintNameLength;+            ULONG Flags;+            WCHAR PathBuffer[1];+        } SymbolicLinkReparseBuffer;+        struct {+            USHORT SubstituteNameOffset;+            USHORT SubstituteNameLength;+            USHORT PrintNameOffset;+            USHORT PrintNameLength;+            WCHAR PathBuffer[1];+        } MountPointReparseBuffer;+        struct {+            UCHAR DataBuffer[1];+        } GenericReparseBuffer;+    };+} HsDirectory_REPARSE_DATA_BUFFER;++#endif
+ System/Directory/OsPath.hs view
@@ -0,0 +1,1669 @@+-----------------------------------------------------------------------------+-- |+-- Module      :  System.Directory.OsPath+-- Copyright   :  (c) The University of Glasgow 2001+-- License     :  BSD-style (see the file libraries/base/LICENSE)+--+-- Maintainer  :  libraries@haskell.org+-- Stability   :  stable+-- Portability :  portable+--+-- System-independent interface to directory manipulation.+--+-- @since 1.3.8.0+--+-----------------------------------------------------------------------------++module System.Directory.OsPath+   (+    -- $intro++    -- * Actions on directories+      createDirectory+    , createDirectoryIfMissing+    , removeDirectory+    , removeDirectoryRecursive+    , removePathForcibly+    , renameDirectory+    , listDirectory+    , getDirectoryContents+    -- ** Current working directory+    , getCurrentDirectory+    , setCurrentDirectory+    , withCurrentDirectory++    -- * Pre-defined directories+    , getHomeDirectory+    , XdgDirectory(..)+    , getXdgDirectory+    , XdgDirectoryList(..)+    , getXdgDirectoryList+    , getAppUserDataDirectory+    , getUserDocumentsDirectory+    , getTemporaryDirectory++    -- * PATH+    , getExecSearchPath++    -- * Actions on files+    , removeFile+    , renameFile+    , renamePath+    , copyFile+    , copyFileWithMetadata+    , getFileSize++    , canonicalizePath+    , makeAbsolute+    , makeRelativeToCurrentDirectory++    -- * Existence tests+    , doesPathExist+    , doesFileExist+    , doesDirectoryExist++    , findExecutable+    , findExecutables+    , findExecutablesInDirectories+    , findFile+    , findFiles+    , findFileWith+    , findFilesWith+    , exeExtension++    -- * Symbolic links+    , createFileLink+    , createDirectoryLink+    , removeDirectoryLink+    , pathIsSymbolicLink+    , getSymbolicLinkTarget++    -- * Permissions++    -- $permissions++    , Permissions+    , emptyPermissions+    , readable+    , writable+    , executable+    , searchable+    , setOwnerReadable+    , setOwnerWritable+    , setOwnerExecutable+    , setOwnerSearchable++    , getPermissions+    , setPermissions+    , copyPermissions++    -- * Timestamps++    , getAccessTime+    , getModificationTime+    , setAccessTime+    , setModificationTime++   ) where+import Prelude ()+import System.Directory.Internal+import System.Directory.Internal.Prelude+import System.OsPath+  ( (<.>)+  , (</>)+  , addTrailingPathSeparator+  , dropTrailingPathSeparator+  , hasTrailingPathSeparator+  , isAbsolute+  , joinPath+  , makeRelative+  , splitDirectories+  , splitSearchPath+  , takeDirectory+  , encodeWith+  )+import qualified Data.List.NonEmpty as NE+import Data.Time (UTCTime)+import Data.Time.Clock.POSIX (utcTimeToPOSIXSeconds)+import GHC.IO.Encoding.UTF8 ( mkUTF8 )+import GHC.IO.Encoding.UTF16 ( mkUTF16le )+import GHC.IO.Encoding.Failure ( CodingFailureMode(..) )++{- $intro+A directory contains a series of entries, each of which is a named+reference to a file system object (file, directory etc.).  Some+entries may be hidden, inaccessible, or have some administrative+function (e.g. @.@ or @..@ under+<http://www.opengroup.org/onlinepubs/009695399 POSIX>), but in+this standard all such entries are considered to form part of the+directory contents. Entries in sub-directories are not, however,+considered to form part of the directory contents.++Each file system object is referenced by a /path/.  There is+normally at least one absolute path to each file system object.  In+some operating systems, it may also be possible to have paths which+are relative to the current directory.++Unless otherwise documented:++* 'IO' operations in this package may throw any 'IOError'.  No other types of+  exceptions shall be thrown.++* The list of possible 'IOErrorType's in the API documentation is not+  exhaustive.  The full list may vary by platform and/or evolve over time.++-}++-----------------------------------------------------------------------------+-- Permissions++{- $permissions++directory offers a limited (and quirky) interface for reading and setting file+and directory permissions; see 'getPermissions' and 'setPermissions' for a+discussion of their limitations.  Because permissions are very difficult to+implement portably across different platforms, users who wish to do more+sophisticated things with permissions are advised to use other,+platform-specific libraries instead.  For example, if you are only interested+in permissions on POSIX-like platforms,+<https://hackage.haskell.org/package/unix/docs/System-Posix-Files.html unix>+offers much more flexibility.++ The 'Permissions' type is used to record whether certain operations are+ permissible on a file\/directory. 'getPermissions' and 'setPermissions'+ get and set these permissions, respectively. Permissions apply both to+ files and directories. For directories, the executable field will be+ 'False', and for files the searchable field will be 'False'. Note that+ directories may be searchable without being readable, if permission has+ been given to use them as part of a path, but not to examine the+ directory contents.++Note that to change some, but not all permissions, a construct on the+following lines must be used.++>  makeReadable f = do+>     p <- getPermissions f+>     setPermissions f (p {readable = True})++-}++emptyPermissions :: Permissions+emptyPermissions = Permissions {+                       readable   = False,+                       writable   = False,+                       executable = False,+                       searchable = False+                   }++setOwnerReadable :: Bool -> Permissions -> Permissions+setOwnerReadable b p = p { readable = b }++setOwnerWritable :: Bool -> Permissions -> Permissions+setOwnerWritable b p = p { writable = b }++setOwnerExecutable :: Bool -> Permissions -> Permissions+setOwnerExecutable b p = p { executable = b }++setOwnerSearchable :: Bool -> Permissions -> Permissions+setOwnerSearchable b p = p { searchable = b }++-- | Get the permissions of a file or directory.+--+-- On Windows, the 'writable' permission corresponds to the "read-only"+-- attribute.  The 'executable' permission is set if the file extension is of+-- an executable file type.  The 'readable' permission is always set.+--+-- On POSIX systems, this returns the result of @access@.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to access the+--   permissions, or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+getPermissions :: OsPath -> IO Permissions+getPermissions path =+  (`ioeAddLocation` "getPermissions") `modifyIOError` do+    getAccessPermissions (emptyToCurDir path)++-- | Set the permissions of a file or directory.+--+-- On Windows, this is only capable of changing the 'writable' permission,+-- which corresponds to the "read-only" attribute.  Changing the other+-- permissions has no effect.+--+-- On POSIX systems, this sets the /owner/ permissions.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to set the permissions,+--   or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+setPermissions :: OsPath -> Permissions -> IO ()+setPermissions path p =+  (`ioeAddLocation` "setPermissions") `modifyIOError` do+    setAccessPermissions (emptyToCurDir path) p++-- | Copy the permissions of one file to another.  This reproduces the+-- permissions more accurately than using 'getPermissions' followed by+-- 'setPermissions'.+--+-- On Windows, this copies only the read-only attribute.+--+-- On POSIX systems, this is equivalent to @stat@ followed by @chmod@.+copyPermissions :: OsPath -> OsPath -> IO ()+copyPermissions src dst =+  (`ioeAddLocation` "copyPermissions") `modifyIOError` do+    m <- getFileMetadata src+    copyPermissionsFromMetadata m dst++copyPermissionsFromMetadata :: Metadata -> OsPath -> IO ()+copyPermissionsFromMetadata m dst = do+  -- instead of setFileMode, setFilePermissions is used here+  -- this is to retain backward compatibility in copyPermissions+  setFilePermissions dst (modeFromMetadata m)++-----------------------------------------------------------------------------+-- Implementation++{- |@'createDirectory' dir@ creates a new directory @dir@ which is+initially empty, or as near to empty as the operating system+allows.++The operation may fail with:++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES]@++* 'isAlreadyExistsError'+The operand refers to a directory that already exists.+@ [EEXIST]@++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+The operand is not a valid directory name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+There is no path to the directory.+@[ENOENT, ENOTDIR]@++* 'System.IO.isFullError'+Insufficient resources (virtual memory, process file descriptors,+physical disk space, etc.) are available to perform the operation.+@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@++* @InappropriateType@+The path refers to an existing non-directory object.+@[EEXIST]@++-}++createDirectory :: OsPath -> IO ()+createDirectory = createDirectoryInternal++-- | @'createDirectoryIfMissing' parents dir@ creates a new directory+-- @dir@ if it doesn\'t exist. If the first argument is 'True'+-- the function will also create all parent directories if they are missing.+createDirectoryIfMissing+  :: Bool   -- ^ Create its parents too?+  -> OsPath -- ^ The path to the directory you want to make+  -> IO ()+createDirectoryIfMissing create_parents path0+  | create_parents = createDirs (parents path0)+  | otherwise      = createDirs (take 1 (parents path0))+  where+    parents = reverse . scanl1 (</>) . splitDirectories . simplify++    createDirs []         = pure ()+    createDirs [dir]      = createDir dir ioError+    createDirs (dir:dirs) =+      createDir dir $ \_ -> do+        createDirs dirs+        createDir dir ioError++    createDir dir notExistHandler = do+      r <- tryIOError (createDirectory dir)+      case r of+        Right ()                   -> pure ()+        Left  e+          | isDoesNotExistError  e -> notExistHandler e+          -- createDirectory (and indeed POSIX mkdir) does not distinguish+          -- between a dir already existing and a file already existing. So we+          -- check for it here. Unfortunately there is a slight race condition+          -- here, but we think it is benign. It could report an exception in+          -- the case that the dir did exist but another process deletes the+          -- directory and creates a file in its place before we can check+          -- that the directory did indeed exist.+          -- We also follow this path when we get a permissions error, as+          -- trying to create "." when in the root directory on Windows+          -- fails with+          --     CreateDirectory ".": permission denied (Access is denied.)+          -- This caused GHCi to crash when loading a module in the root+          -- directory.+          | isAlreadyExistsError e+         || isPermissionError    e -> do+              canIgnore <- pathIsDirectory dir+                             `catchIOError` \ _ ->+                               pure (isAlreadyExistsError e)+              unless canIgnore (ioError e)+          | otherwise              -> ioError e+++{- | @'removeDirectory' dir@ removes an existing directory /dir/.  The+implementation may specify additional constraints which must be+satisfied before a directory can be removed (e.g. the directory has to+be empty, or may not be in use by other processes).  It is not legal+for an implementation to partially remove a directory unless the+entire directory is removed. A conformant implementation need not+support directory removal in all situations (e.g. removal of the root+directory).++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+The operand is not a valid directory name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The directory does not exist.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY, ENOTEMPTY, EEXIST]@++* @UnsupportedOperation@+The implementation does not support removal in this situation.+@[EINVAL]@++* @InappropriateType@+The operand refers to an existing non-directory object.+@[ENOTDIR]@++-}++removeDirectory :: OsPath -> IO ()+removeDirectory = removePathInternal True++type Preremover = Maybe RawHandle -> OsPath -> Metadata -> IO ()++noPreremover :: Preremover+noPreremover _ _ _ = pure ()++forcePreremover :: Preremover+forcePreremover dir path metadata = do+  when (fileTypeIsDirectory (fileTypeFromMetadata metadata)+        || not filesAlwaysRemovable) $ do+    setModeAt dir path mode+      `catchIOError` \ _ -> pure ()+  where+    mode = setForceRemoveMode (modeFromMetadata metadata)++removeRecursivelyAt+  :: (IO () -> IO ())+  -> ([IO ()] -> IO ())+  -> Preremover+  -> Maybe RawHandle+  -> OsPath+  -> IO ()+removeRecursivelyAt catcher sequencer preremover dir name = catcher $ do+  metadata <- getMetadataAt NoFollow dir name+  preremover dir name metadata+  let+    fileType = fileTypeFromMetadata metadata+    subremovals = do+      when (fileType == Directory) $ do+        bracket (openRaw NoFollow dir name) closeRaw $ \ handle -> do+          -- dropSpecialDotDirs is extremely important! Otherwise it will+          -- recurse into the parent directory and wreak havoc.+          names <- dropSpecialDotDirs <$> readDirToEnd handle+          sequencer (recurse (Just handle) <$> names)+  sequencer [subremovals, removePathAt fileType dir name]+  where recurse = removeRecursivelyAt catcher sequencer preremover++-- | @'removeDirectoryRecursive' dir@ removes an existing directory /dir/+-- together with its contents and subdirectories. Within this directory,+-- symbolic links are removed without affecting their targets.+--+-- On Windows, the operation fails if /dir/ is a directory symbolic link.+--+-- This operation is reported to be flaky on Windows so retry logic may+-- be advisable. See: https://github.com/haskell/directory/pull/108+removeDirectoryRecursive :: OsPath -> IO ()+removeDirectoryRecursive path =+  (`ioeAddLocation` "removeDirectoryRecursive") `modifyIOError` do+    m <- getSymbolicLinkMetadata path+    case fileTypeFromMetadata m of+      Directory ->+        removeRecursivelyAt id sequenceA_ noPreremover Nothing path+      DirectoryLink ->+        ioError (err `ioeSetErrorString` "is a directory symbolic link")+      _ ->+        ioError (err `ioeSetErrorString` "not a directory")+  where err = mkIOError InappropriateType "" Nothing Nothing `ioeSetOsPath` path++-- | Removes a file or directory at /path/ together with its contents and+-- subdirectories. Symbolic links are removed without affecting their+-- targets. If the path does not exist, nothing happens.+--+-- Unlike other removal functions, this function will also attempt to delete+-- files marked as read-only or otherwise made unremovable due to permissions.+-- As a result, if the removal is incomplete, the permissions or attributes on+-- the remaining files may be altered.  If there are hard links in the+-- directory, then permissions on all related hard links may be altered.+--+-- If an entry within the directory vanishes while @removePathForcibly@ is+-- running, it is silently ignored.+--+-- If an exception occurs while removing an entry, @removePathForcibly@ will+-- still try to remove as many entries as it can before failing with an+-- exception.  The first exception that it encountered is re-thrown.+removePathForcibly :: OsPath -> IO ()+removePathForcibly path =+  (`ioeAddLocation` "removePathForcibly") `modifyIOError` do+    removeRecursivelyAt+      ignoreDoesNotExistError+      sequenceWithIOErrors_+      forcePreremover+      Nothing+      path++  where++    ignoreDoesNotExistError :: IO () -> IO ()+    ignoreDoesNotExistError action =+      () <$ tryIOErrorType isDoesNotExistError action++{- |'removeFile' /file/ removes the directory entry for an existing file+/file/, where /file/ is not itself a directory. The+implementation may specify additional constraints which must be+satisfied before a file can be removed (e.g. the file may not be in+use by other processes).++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+The operand is not a valid file name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The file does not exist.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY]@++* @InappropriateType@+The operand refers to an existing directory.+@[EPERM, EINVAL]@++-}++removeFile :: OsPath -> IO ()+removeFile = removePathInternal False++{- |@'renameDirectory' old new@ changes the name of an existing+directory from /old/ to /new/.  If the /new/ directory+already exists, it is atomically replaced by the /old/ directory.+If the /new/ directory is neither the /old/ directory nor an+alias of the /old/ directory, it is removed as if by+'removeDirectory'.  A conformant implementation need not support+renaming directories in all situations (e.g. renaming to an existing+directory, or across different physical devices), but the constraints+must be documented.++On Win32 platforms, @renameDirectory@ fails if the /new/ directory already+exists.++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+Either operand is not a valid directory name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The original directory does not exist, or there is no path to the target.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* 'System.IO.isFullError'+Insufficient resources are available to perform the operation.+@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY, ENOTEMPTY, EEXIST]@++* @UnsupportedOperation@+The implementation does not support renaming in this situation.+@[EINVAL, EXDEV]@++* @InappropriateType@+Either path refers to an existing non-directory object.+@[ENOTDIR, EISDIR]@++-}++renameDirectory :: OsPath -> OsPath -> IO ()+renameDirectory opath npath =+   (`ioeAddLocation` "renameDirectory") `modifyIOError` do+     -- XXX this test isn't performed atomically with the following rename+     isDir <- pathIsDirectory opath+     when (not isDir) . ioError $+       mkIOError InappropriateType "renameDirectory" Nothing Nothing+       `ioeSetErrorString` "not a directory"+       `ioeSetOsPath` opath+     renamePath opath npath++{- |@'renameFile' old new@ changes the name of an existing file system+object from /old/ to /new/.  If the /new/ object already exists, it is+replaced by the /old/ object.  Neither path may refer to an existing+directory.++A conformant implementation need not support renaming files in all situations+(e.g. renaming across different physical devices), but the constraints must be+documented. On Windows, this does not support renaming across different physical+devices; if you are looking to do so, consider using 'copyFileWithMetadata' and+'removeFile'.++On Windows, this calls @MoveFileEx@ with @MOVEFILE_REPLACE_EXISTING@ set,+which is not guaranteed to be atomic+(<https://github.com/haskell/directory/issues/109>).++On other platforms, this operation is atomic.++The operation may fail with:++* @HardwareFault@+A physical I\/O error has occurred.+@[EIO]@++* @InvalidArgument@+Either operand is not a valid file name.+@[ENAMETOOLONG, ELOOP]@++* 'isDoesNotExistError'+The original file does not exist, or there is no path to the target.+@[ENOENT, ENOTDIR]@++* 'isPermissionError'+The process has insufficient privileges to perform the operation.+@[EROFS, EACCES, EPERM]@++* 'System.IO.isFullError'+Insufficient resources are available to perform the operation.+@[EDQUOT, ENOSPC, ENOMEM, EMLINK]@++* @UnsatisfiedConstraints@+Implementation-dependent constraints are not satisfied.+@[EBUSY]@++* @UnsupportedOperation@+The implementation does not support renaming in this situation.+@[EXDEV]@++* @InappropriateType@+Either path refers to an existing directory.+@[ENOTDIR, EISDIR, EINVAL, EEXIST, ENOTEMPTY]@++-}++renameFile :: OsPath -> OsPath -> IO ()+renameFile opath npath =+  (`ioeAddLocation` "renameFile") `modifyIOError` do+    -- XXX the tests are not performed atomically with the rename+    checkNotDir opath+    renamePath opath npath+      -- The underlying rename implementation can throw odd exceptions when the+      -- destination is a directory.  For example, Windows typically throws a+      -- permission error, while POSIX systems may throw a resource busy error+      -- if one of the paths refers to the current directory.  In these cases,+      -- we check if the destination is a directory and, if so, throw an+      -- InappropriateType error.+      `catchIOError` \ err -> do+        checkNotDir npath+        ioError err+  where checkNotDir path = do+          m <- tryIOError (getSymbolicLinkMetadata path)+          case fileTypeIsDirectory . fileTypeFromMetadata <$> m of+            Right True ->+              ioError $+              mkIOError InappropriateType "" Nothing Nothing+              `ioeSetErrorString` "is a directory"+              `ioeSetOsPath` path+            _          -> pure ()++-- | Rename a file or directory.  If the destination path already exists, it+-- is replaced atomically.  The destination path must not point to an existing+-- directory.  A conformant implementation need not support renaming files in+-- all situations (e.g. renaming across different physical devices), but the+-- constraints must be documented.+--+-- The operation may fail with:+--+-- * @HardwareFault@+-- A physical I\/O error has occurred.+-- @[EIO]@+--+-- * @InvalidArgument@+-- Either operand is not a valid file name.+-- @[ENAMETOOLONG, ELOOP]@+--+-- * 'isDoesNotExistError'+-- The original file does not exist, or there is no path to the target.+-- @[ENOENT, ENOTDIR]@+--+-- * 'isPermissionError'+-- The process has insufficient privileges to perform the operation.+-- @[EROFS, EACCES, EPERM]@+--+-- * 'System.IO.isFullError'+-- Insufficient resources are available to perform the operation.+-- @[EDQUOT, ENOSPC, ENOMEM, EMLINK]@+--+-- * @UnsatisfiedConstraints@+-- Implementation-dependent constraints are not satisfied.+-- @[EBUSY]@+--+-- * @UnsupportedOperation@+-- The implementation does not support renaming in this situation.+-- @[EXDEV]@+--+-- * @InappropriateType@+-- Either the destination path refers to an existing directory, or one of the+-- parent segments in the destination path is not a directory.+-- @[ENOTDIR, EISDIR, EINVAL, EEXIST, ENOTEMPTY]@+renamePath :: OsPath                  -- ^ Old path+           -> OsPath                  -- ^ New path+           -> IO ()+renamePath opath npath =+  (`ioeAddLocation` "renamePath") `modifyIOError` do+    renamePathInternal opath npath++-- | Copy a file with its permissions.  If the destination file already exists,+-- it is replaced atomically.  Neither path may refer to an existing+-- directory.  No exceptions are thrown if the permissions could not be+-- copied.+copyFile :: OsPath                    -- ^ Source filename+         -> OsPath                    -- ^ Destination filename+         -> IO ()+copyFile fromFPath toFPath =+  (`ioeAddLocation` "copyFile") `modifyIOError` do+    atomicCopyFileContents fromFPath toFPath+      (ignoreIOExceptions . copyPermissions fromFPath)++-- | Copy all data from a file to a handle.+copyFileToHandle :: OsPath              -- ^ Source file+                 -> Handle              -- ^ Destination handle+                 -> IO ()+copyFileToHandle fromFPath hTo =+  (`ioeAddLocation` "copyFileToHandle") `modifyIOError` do+    withBinaryFile fromFPath ReadMode $ \ hFrom ->+      copyHandleData hFrom hTo++-- | Copy the contents of a source file to a destination file, replacing the+-- destination file atomically via @withReplacementFile@, resetting the+-- attributes of the destination file to the defaults.+atomicCopyFileContents :: OsPath            -- ^ Source filename+                       -> OsPath            -- ^ Destination filename+                       -> (OsPath -> IO ()) -- ^ Post-action+                       -> IO ()+atomicCopyFileContents fromFPath toFPath postAction =+  (`ioeAddLocation` "atomicCopyFileContents") `modifyIOError` do+    withReplacementFile toFPath postAction $ \ hTo -> do+      copyFileToHandle fromFPath hTo++-- | A helper function useful for replacing files in an atomic manner.  The+-- function creates a temporary file in the directory of the destination file,+-- opens it, performs the main action with its handle, closes it, performs the+-- post-action with its path, and finally replaces the destination file with+-- the temporary file.  If an error occurs during any step of this process,+-- the temporary file is removed and the destination file remains untouched.+withReplacementFile :: OsPath            -- ^ Destination file+                    -> (OsPath -> IO ()) -- ^ Post-action+                    -> (Handle -> IO a)  -- ^ Main action+                    -> IO a+withReplacementFile path postAction action =+  (`ioeAddLocation` "withReplacementFile") `modifyIOError` do+    mask $ \ restore -> do+      let tmpPath = case encodeWith (mkUTF8 ErrorOnCodingFailure)+                                    (mkUTF16le ErrorOnCodingFailure)+                                    ".copyFile.tmp"+                         of+            Left err ->+              error ("withReplacementFile: invalid encoding: " <> show err)+            Right p -> p+      let dir = takeDirectory path+      (tmpFPath, hTmp) <-+        openTempFile' "openTempFile'" dir tmpPath True 0o600 True+      (`onException` ignoreIOExceptions (removeFile tmpFPath)) $ do+        r <- (`onException` ignoreIOExceptions (hClose hTmp)) $ do+          restore (action hTmp)+        hClose hTmp+        restore (postAction tmpFPath)+        renameFile tmpFPath path+        pure r++-- | Copy a file with its associated metadata.  If the destination file+-- already exists, it is overwritten.  There is no guarantee of atomicity in+-- the replacement of the destination file.  Neither path may refer to an+-- existing directory.  If the source and/or destination are symbolic links,+-- the copy is performed on the targets of the links.+--+-- On Windows, it behaves like the Win32 function+-- <https://msdn.microsoft.com/en-us/library/windows/desktop/aa363851.aspx CopyFile>,+-- which copies various kinds of metadata including file attributes and+-- security resource properties.+--+-- On Unix-like systems, permissions, access time, and modification time are+-- preserved.  If possible, the owner and group are also preserved.  Note that+-- the very act of copying can change the access time of the source file,+-- hence the access times of the two files may differ after the operation+-- completes.+copyFileWithMetadata :: OsPath        -- ^ Source file+                     -> OsPath        -- ^ Destination file+                     -> IO ()+copyFileWithMetadata src dst =+  (`ioeAddLocation` "copyFileWithMetadata") `modifyIOError`+    copyFileWithMetadataInternal copyPermissionsFromMetadata+                                 copyTimesFromMetadata+                                 src+                                 dst++copyTimesFromMetadata :: Metadata -> OsPath -> IO ()+copyTimesFromMetadata st dst = do+  let atime = accessTimeFromMetadata st+  let mtime = modificationTimeFromMetadata st+  setFileTimes dst (Just atime, Just mtime)++-- | Make a path absolute, normalize the path, and remove as many indirections+-- from it as possible.  Any trailing path separators are discarded via+-- 'dropTrailingPathSeparator'.  Additionally, on Windows the letter case of+-- the path is canonicalized.+--+-- __Note__: This function is a very big hammer.  If you only need an absolute+-- path, 'makeAbsolute' is sufficient for removing dependence on the current+-- working directory.+--+-- Indirections include the two special directories @.@ and @..@, as well as+-- any symbolic links (and junction points on Windows).  The input path need+-- not point to an existing file or directory.  Canonicalization is performed+-- on the longest prefix of the path that points to an existing file or+-- directory.  The remaining portion of the path that does not point to an+-- existing file or directory will still be normalized, but case+-- canonicalization and indirection removal are skipped as they are impossible+-- to do on a nonexistent path.+--+-- Most programs should not worry about the canonicity of a path.  In+-- particular, despite the name, the function does not truly guarantee+-- canonicity of the returned path due to the presence of hard links, mount+-- points, etc.+--+-- If the path points to an existing file or directory, then the output path+-- shall also point to the same file or directory, subject to the condition+-- that the relevant parts of the file system do not change while the function+-- is still running.  In other words, the function is definitively not atomic.+-- The results can be utterly wrong if the portions of the path change while+-- this function is running.+--+-- Since some indirections (symbolic links on all systems, @..@ on non-Windows+-- systems, and junction points on Windows) are dependent on the state of the+-- existing filesystem, the function can only make a conservative attempt by+-- removing such indirections from the longest prefix of the path that still+-- points to an existing file or directory.+--+-- Note that on Windows parent directories @..@ are always fully expanded+-- before the symbolic links, as consistent with the rest of the Windows API+-- (such as @GetFullPathName@).  In contrast, on POSIX systems parent+-- directories @..@ are expanded alongside symbolic links from left to right.+-- To put this more concretely: if @L@ is a symbolic link for @R/P@, then on+-- Windows @L\\..@ refers to @.@, whereas on other operating systems @L/..@+-- refers to @R@.+--+-- Similar to 'System.FilePath.normalise', passing an empty path is equivalent+-- to passing the current directory.+--+-- @canonicalizePath@ can resolve at least 64 indirections in a single path,+-- more than what is supported by most operating systems.  Therefore, it may+-- return the fully resolved path even though the operating system itself+-- would have long given up.+--+-- On Windows XP or earlier systems, junction expansion is not performed due+-- to their lack of @GetFinalPathNameByHandle@.+--+-- /Changes since 1.2.3.0:/ The function has been altered to be more robust+-- and has the same exception behavior as 'makeAbsolute'.+--+-- /Changes since 1.3.0.0:/ The function no longer preserves the trailing path+-- separator.  File symbolic links that appear in the middle of a path are+-- properly dereferenced.  Case canonicalization and symbolic link expansion+-- are now performed on Windows.+--+canonicalizePath :: OsPath -> IO OsPath+canonicalizePath = \ path ->+  ((`ioeAddLocation` "canonicalizePath") .+   (`ioeSetOsPath` path)) `modifyIOError` do+    -- simplify does more stuff, like upper-casing the drive letter+    dropTrailingPathSeparator . simplify <$>+      (attemptRealpath realPath =<< prependCurrentDirectory path)+  where++    -- allow up to 64 cycles before giving up+    attemptRealpath realpath =+      attemptRealpathWith (64 :: Int) Nothing realpath+      <=< canonicalizePathSimplify++    -- n is a counter to make sure we don't run into an infinite loop; we+    -- don't try to do any cycle detection here because an adversary could DoS+    -- any arbitrarily clever algorithm+    attemptRealpathWith n mFallback realpath path =+      case mFallback of+        -- too many indirections ... giving up.+        Just fallback | n <= 0 -> pure fallback+        -- either mFallback == Nothing (first attempt)+        --     or n > 0 (still have some attempts left)+        _ -> realpathPrefix (reverse (zip prefixes suffixes))++      where++        segments = splitDirectories path+        prefixes = scanl1 (</>) segments+        suffixes = NE.tail (NE.scanr (</>) mempty segments)++        -- try to call realpath on the largest possible prefix+        realpathPrefix candidates =+          case candidates of+            [] -> pure path+            (prefix, suffix) : rest -> do+              exist <- doesPathExist prefix+              if not exist+                -- never call realpath on an inaccessible path+                -- (to avoid bugs in system realpath implementations)+                -- try a smaller prefix instead+                then realpathPrefix rest+                else do+                  mp <- tryIOError (realpath prefix)+                  case mp of+                    -- realpath failed: try a smaller prefix instead+                    Left _ -> realpathPrefix rest+                    -- realpath succeeded: fine-tune the result+                    Right p -> realpathFurther (p </> suffix) p suffix++        -- by now we have a reasonable fallback value that we can use if we+        -- run into too many indirections; the fallback value is the same+        -- result that we have been returning in versions prior to 1.3.1.0+        -- (this is essentially the fix to #64)+        realpathFurther fallback p suffix =+          case splitDirectories suffix of+            [] -> pure fallback+            next : restSuffix -> do+              -- see if the 'next' segment is a symlink+              mTarget <- tryIOError (getSymbolicLinkTarget (p </> next))+              case mTarget of+                Left _ -> pure fallback+                Right target -> do+                  -- if so, dereference it and restart the whole cycle+                  let mFallback' = Just (fromMaybe fallback mFallback)+                  path' <- canonicalizePathSimplify+                             (p </> target </> joinPath restSuffix)+                  attemptRealpathWith (n - 1) mFallback' realpath path'++-- | Convert a path into an absolute path.  If the given path is relative, the+-- current directory is prepended and then the combined result is normalized.+-- If the path is already absolute, the path is simply normalized.  The+-- function preserves the presence or absence of the trailing path separator+-- unless the path refers to the root directory @/@.+--+-- If the path is already absolute, the operation never fails.  Otherwise, the+-- operation may fail with the same exceptions as 'getCurrentDirectory'.+--+makeAbsolute :: OsPath -> IO OsPath+makeAbsolute path =+  ((`ioeAddLocation` "makeAbsolute") .+   (`ioeSetOsPath` path)) `modifyIOError` do+    matchTrailingSeparator path . simplify <$> prependCurrentDirectory path++-- | Add or remove the trailing path separator in the second path so as to+-- match its presence in the first path.+--+-- (internal API)+matchTrailingSeparator :: OsPath -> OsPath -> OsPath+matchTrailingSeparator path+  | hasTrailingPathSeparator path = addTrailingPathSeparator+  | otherwise                     = dropTrailingPathSeparator++-- | Construct a path relative to the current directory, similar to+-- 'makeRelative'.+--+-- The operation may fail with the same exceptions as 'getCurrentDirectory'.+makeRelativeToCurrentDirectory :: OsPath -> IO OsPath+makeRelativeToCurrentDirectory x = do+  (`makeRelative` x) <$> getCurrentDirectory++-- | Given the name or path of an executable file, 'findExecutable' searches+-- for such a file in a list of system-defined locations, which generally+-- includes @PATH@ and possibly more.  The full path to the executable is+-- returned if found.  For example, @(findExecutable \"ghc\")@ would normally+-- give you the path to GHC.+--+-- The path returned by @'findExecutable' name@ corresponds to the program+-- that would be executed by+-- @<http://hackage.haskell.org/package/process/docs/System-Process.html#v:createProcess createProcess>@+-- when passed the same string (as a @RawCommand@, not a @ShellCommand@),+-- provided that @name@ is not a relative path with more than one segment.+--+-- On Windows, 'findExecutable' calls the Win32 function+-- @<https://msdn.microsoft.com/en-us/library/aa365527.aspx SearchPath>@,+-- which may search other places before checking the directories in the @PATH@+-- environment variable.  Where it actually searches depends on registry+-- settings, but notably includes the directory containing the current+-- executable.+--+-- On non-Windows platforms, the behavior is equivalent to 'findFileWith'+-- using the search directories from the @PATH@ environment variable and+-- testing each file for executable permissions.  Details can be found in the+-- documentation of 'findFileWith'.+findExecutable :: OsString -> IO (Maybe OsPath)+findExecutable binary =+  listTHead+    (findExecutablesLazyInternal findExecutablesInDirectoriesLazy binary)++-- | Search for executable files in a list of system-defined locations, which+-- generally includes @PATH@ and possibly more.+--+-- On Windows, this /only returns the first occurrence/, if any.  Its behavior+-- is therefore equivalent to 'findExecutable'.+--+-- On non-Windows platforms, the behavior is equivalent to+-- 'findExecutablesInDirectories' using the search directories from the @PATH@+-- environment variable.  Details can be found in the documentation of+-- 'findExecutablesInDirectories'.+findExecutables :: OsString -> IO [OsPath]+findExecutables binary =+  listTToList+    (findExecutablesLazyInternal findExecutablesInDirectoriesLazy binary)++-- | Given a name or path, 'findExecutable' appends the 'exeExtension' to the+-- query and searches for executable files in the list of given search+-- directories and returns all occurrences.+--+-- The behavior is equivalent to 'findFileWith' using the given search+-- directories and testing each file for executable permissions.  Details can+-- be found in the documentation of 'findFileWith'.+--+-- Unlike other similarly named functions, 'findExecutablesInDirectories' does+-- not use @SearchPath@ from the Win32 API.  The behavior of this function on+-- Windows is therefore equivalent to those on non-Windows platforms.+findExecutablesInDirectories :: [OsPath] -> OsString -> IO [OsPath]+findExecutablesInDirectories path binary =+  listTToList (findExecutablesInDirectoriesLazy path binary)++findExecutablesInDirectoriesLazy :: [OsPath] -> OsString -> ListT IO OsPath+findExecutablesInDirectoriesLazy path binary =+  findFilesWithLazy isExecutable path (binary <.> exeExtension)++-- | Test whether a file has executable permissions.+isExecutable :: OsPath -> IO Bool+isExecutable file = executable <$> getPermissions file++-- | Search through the given list of directories for the given file.+--+-- The behavior is equivalent to 'findFileWith', returning only the first+-- occurrence.  Details can be found in the documentation of 'findFileWith'.+findFile :: [OsPath] -> OsString -> IO (Maybe OsPath)+findFile = findFileWith (\ _ -> pure True)++-- | Search through the given list of directories for the given file and+-- returns all paths where the given file exists.+--+-- The behavior is equivalent to 'findFilesWith'.  Details can be found in the+-- documentation of 'findFilesWith'.+findFiles :: [OsPath] -> OsString -> IO [OsPath]+findFiles = findFilesWith (\ _ -> pure True)++-- | Search through a given list of directories for a file that has the given+-- name and satisfies the given predicate and return the path of the first+-- occurrence.  The directories are checked in a left-to-right order.+--+-- This is essentially a more performant version of 'findFilesWith' that+-- always returns the first result, if any.  Details can be found in the+-- documentation of 'findFilesWith'.+findFileWith :: (OsPath -> IO Bool) -> [OsPath] -> OsString -> IO (Maybe OsPath)+findFileWith f ds name = listTHead (findFilesWithLazy f ds name)++-- | @findFilesWith predicate dirs name@ searches through the list of+-- directories (@dirs@) for files that have the given @name@ and satisfy the+-- given @predicate@ and returns the paths of those files.  The directories+-- are checked in a left-to-right order and the paths are returned in the same+-- order.+--+-- If the @name@ is a relative path, then for every search directory @dir@,+-- the function checks whether @dir '</>' name@ exists and satisfies the+-- predicate.  If so, @dir '</>' name@ is returned as one of the results.  In+-- other words, the returned paths can be either relative or absolute+-- depending on the search directories were used.  If there are no search+-- directories, no results are ever returned.+--+-- If the @name@ is an absolute path, then the function will return a single+-- result if the file exists and satisfies the predicate and no results+-- otherwise.  This is irrespective of what search directories were given.+findFilesWith :: (OsPath -> IO Bool) -> [OsPath] -> OsString -> IO [OsPath]+findFilesWith f ds name = listTToList (findFilesWithLazy f ds name)++findFilesWithLazy+  :: (OsPath -> IO Bool) -> [OsPath] -> OsString -> ListT IO OsPath+findFilesWithLazy f dirs path+  -- make sure absolute paths are handled properly irrespective of 'dirs'+  -- https://github.com/haskell/directory/issues/72+  | isAbsolute path = ListT (find [mempty])+  | otherwise       = ListT (find dirs)++  where++    find []       = pure Nothing+    find (d : ds) = do+      let p = d </> path+      found <- doesFileExist p `andM` f p+      if found+        then pure (Just (p, ListT (find ds)))+        else find ds++-- | Filename extension for executable files (including the dot if any)+--   (usually @\"\"@ on POSIX systems and @\".exe\"@ on Windows or OS\/2).+exeExtension :: OsString+exeExtension = exeExtensionInternal++-- | Similar to 'listDirectory', but always includes the special entries (@.@+-- and @..@).  (This applies to Windows as well.)+--+-- The operation may fail with the same exceptions as 'listDirectory'.+getDirectoryContents :: OsPath -> IO [OsPath]+getDirectoryContents path =+  ((`ioeSetOsPath` path) .+   (`ioeAddLocation` "getDirectoryContents")) `modifyIOError` do+    getDirectoryContentsInternal path++-- | @'listDirectory' dir@ returns a list of /all/ entries in /dir/ without+-- the special entries (@.@ and @..@).+--+-- The operation may fail with:+--+-- * @HardwareFault@+--   A physical I\/O error has occurred.+--   @[EIO]@+--+-- * @InvalidArgument@+--   The operand is not a valid directory name.+--   @[ENAMETOOLONG, ELOOP]@+--+-- * 'isDoesNotExistError'+--   The directory does not exist.+--   @[ENOENT, ENOTDIR]@+--+-- * 'isPermissionError'+--   The process has insufficient privileges to perform the operation.+--   @[EACCES]@+--+-- * 'System.IO.isFullError'+--   Insufficient resources are available to perform the operation.+--   @[EMFILE, ENFILE]@+--+-- * @InappropriateType@+--   The path refers to an existing non-directory object.+--   @[ENOTDIR]@+--+listDirectory :: OsPath -> IO [OsPath]+listDirectory path = dropSpecialDotDirs <$> getDirectoryContents path++-- | Obtain the current working directory as an absolute path.+--+-- In a multithreaded program, the current working directory is a global state+-- shared among all threads of the process.  Therefore, when performing+-- filesystem operations from multiple threads, it is highly recommended to+-- use absolute rather than relative paths (see: 'makeAbsolute').+--+-- Note that 'getCurrentDirectory' is not guaranteed to return the same path+-- received by 'setCurrentDirectory'. On POSIX systems, the path returned will+-- always be fully dereferenced (not contain any symbolic links). For more+-- information, refer to the documentation of+-- <https://pubs.opengroup.org/onlinepubs/9699919799/functions/getcwd.html getcwd>.+--+-- The operation may fail with:+--+-- * @HardwareFault@+-- A physical I\/O error has occurred.+-- @[EIO]@+--+-- * 'isDoesNotExistError'+-- There is no path referring to the working directory.+-- @[EPERM, ENOENT, ESTALE...]@+--+-- * 'isPermissionError'+-- The process has insufficient privileges to perform the operation.+-- @[EACCES]@+--+-- * 'System.IO.isFullError'+-- Insufficient resources are available to perform the operation.+--+-- * @UnsupportedOperation@+-- The operating system has no notion of current working directory.+--+getCurrentDirectory :: IO OsPath+getCurrentDirectory =+  (`ioeAddLocation` "getCurrentDirectory") `modifyIOError` do+    specializeErrorString+      "Current working directory no longer exists"+      isDoesNotExistError+      getCurrentDirectoryInternal++-- | Change the working directory to the given path.+--+-- In a multithreaded program, the current working directory is a global state+-- shared among all threads of the process.  Therefore, when performing+-- filesystem operations from multiple threads, it is highly recommended to+-- use absolute rather than relative paths (see: 'makeAbsolute').+--+-- The operation may fail with:+--+-- * @HardwareFault@+-- A physical I\/O error has occurred.+-- @[EIO]@+--+-- * @InvalidArgument@+-- The operand is not a valid directory name.+-- @[ENAMETOOLONG, ELOOP]@+--+-- * 'isDoesNotExistError'+-- The directory does not exist.+-- @[ENOENT, ENOTDIR]@+--+-- * 'isPermissionError'+-- The process has insufficient privileges to perform the operation.+-- @[EACCES]@+--+-- * @UnsupportedOperation@+-- The operating system has no notion of current working directory, or the+-- working directory cannot be dynamically changed.+--+-- * @InappropriateType@+-- The path refers to an existing non-directory object.+-- @[ENOTDIR]@+--+setCurrentDirectory :: OsPath -> IO ()+setCurrentDirectory = setCurrentDirectoryInternal++-- | Run an 'IO' action with the given working directory and restore the+-- original working directory afterwards, even if the given action fails due+-- to an exception.+--+-- The operation may fail with the same exceptions as 'getCurrentDirectory'+-- and 'setCurrentDirectory'.+--+withCurrentDirectory :: OsPath    -- ^ Directory to execute in+                     -> IO a      -- ^ Action to be executed+                     -> IO a+withCurrentDirectory dir action =+  bracket getCurrentDirectory setCurrentDirectory $ \ _ -> do+    setCurrentDirectory dir+    action++-- | Obtain the size of a file in bytes.+getFileSize :: OsPath -> IO Integer+getFileSize path =+  (`ioeAddLocation` "getFileSize") `modifyIOError` do+    fileSizeFromMetadata <$> getFileMetadata path++-- | Test whether the given path points to an existing filesystem object.  If+-- the user lacks necessary permissions to search the parent directories, this+-- function may return false even if the file does actually exist.  This+-- operation traverses symbolic links, so it can return either True or False+-- for them.+doesPathExist :: OsPath -> IO Bool+doesPathExist path = do+  (True <$ getFileMetadata path)+    `catchIOError` \ _ ->+      pure False++-- | The operation 'doesDirectoryExist' returns 'True' if the argument file+-- exists and is either a directory or a symbolic link to a directory, and+-- 'False' otherwise.  This operation traverses symbolic links, so it can+-- return either True or False for them.+doesDirectoryExist :: OsPath -> IO Bool+doesDirectoryExist path = do+  pathIsDirectory path+    `catchIOError` \ _ ->+      pure False++-- | The operation 'doesFileExist' returns 'True' if the argument file exists+-- and is not a directory, and 'False' otherwise.  This operation traverses+-- symbolic links, so it can return either True or False for them.+doesFileExist :: OsPath -> IO Bool+doesFileExist path = do+  (not <$> pathIsDirectory path)+    `catchIOError` \ _ ->+      pure False++pathIsDirectory :: OsPath -> IO Bool+pathIsDirectory path =+  (`ioeAddLocation` "pathIsDirectory") `modifyIOError` do+    fileTypeIsDirectory . fileTypeFromMetadata <$> getFileMetadata path++-- | Create a /file/ symbolic link.  The target path can be either absolute or+-- relative and need not refer to an existing file.  The order of arguments+-- follows the POSIX convention.+--+-- To remove an existing file symbolic link, use 'removeFile'.+--+-- Although the distinction between /file/ symbolic links and /directory/+-- symbolic links does not exist on POSIX systems, on Windows this is an+-- intrinsic property of every symbolic link and cannot be changed without+-- recreating the link.  A file symbolic link that actually points to a+-- directory will fail to dereference and vice versa.  Moreover, creating+-- symbolic links on Windows may require privileges unavailable to users+-- outside the Administrators group.  Portable programs that use symbolic+-- links should take both into consideration.+--+-- On Windows, the function is implemented using @CreateSymbolicLink@.  Since+-- 1.3.3.0, the @SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE@ flag is included+-- if supported by the operating system.  On POSIX, the function uses @symlink@+-- and is therefore atomic.+--+-- Windows-specific errors: This operation may fail with 'permissionErrorType'+-- if the user lacks the privileges to create symbolic links.  It may also+-- fail with 'illegalOperationErrorType' if the file system does not support+-- symbolic links.+createFileLink+  :: OsPath                           -- ^ path to the target file+  -> OsPath                           -- ^ path of the link to be created+  -> IO ()+createFileLink target link =+  (`ioeAddLocation` "createFileLink") `modifyIOError` do+    createSymbolicLink False target link++-- | Create a /directory/ symbolic link.  The target path can be either+-- absolute or relative and need not refer to an existing directory.  The+-- order of arguments follows the POSIX convention.+--+-- To remove an existing directory symbolic link, use 'removeDirectoryLink'.+--+-- Although the distinction between /file/ symbolic links and /directory/+-- symbolic links does not exist on POSIX systems, on Windows this is an+-- intrinsic property of every symbolic link and cannot be changed without+-- recreating the link.  A file symbolic link that actually points to a+-- directory will fail to dereference and vice versa.  Moreover, creating+-- symbolic links on Windows may require privileges unavailable to users+-- outside the Administrators group.  Portable programs that use symbolic+-- links should take both into consideration.+--+-- On Windows, the function is implemented using @CreateSymbolicLink@ with+-- @SYMBOLIC_LINK_FLAG_DIRECTORY@.  Since 1.3.3.0, the+-- @SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE@ flag is also included if+-- supported by the operating system.   On POSIX, this is an alias for+-- 'createFileLink' and is therefore atomic.+--+-- Windows-specific errors: This operation may fail with 'permissionErrorType'+-- if the user lacks the privileges to create symbolic links.  It may also+-- fail with 'illegalOperationErrorType' if the file system does not support+-- symbolic links.+createDirectoryLink+  :: OsPath                           -- ^ path to the target directory+  -> OsPath                           -- ^ path of the link to be created+  -> IO ()+createDirectoryLink target link =+  (`ioeAddLocation` "createDirectoryLink") `modifyIOError` do+    createSymbolicLink True target link++-- | Remove an existing /directory/ symbolic link.+--+-- On Windows, this is an alias for 'removeDirectory'.  On POSIX systems, this+-- is an alias for 'removeFile'.+--+-- See also: 'removeFile', which can remove an existing /file/ symbolic link.+removeDirectoryLink :: OsPath -> IO ()+removeDirectoryLink path =+  (`ioeAddLocation` "removeDirectoryLink") `modifyIOError` do+    removePathInternal linkToDirectoryIsDirectory path++-- | Check whether an existing @path@ is a symbolic link.  If @path@ is a+-- regular file or directory, 'False' is returned.  If @path@ does not exist+-- or is otherwise inaccessible, an exception is thrown (see below).+--+-- On Windows, this checks for @FILE_ATTRIBUTE_REPARSE_POINT@.  In addition to+-- symbolic links, the function also returns true on junction points.  On+-- POSIX systems, this checks for @S_IFLNK@.+--+-- The operation may fail with:+--+-- * 'isDoesNotExistError' if the symbolic link does not exist; or+--+-- * 'isPermissionError' if the user is not permitted to read the symbolic+--   link.+pathIsSymbolicLink :: OsPath -> IO Bool+pathIsSymbolicLink path =+  ((`ioeAddLocation` "pathIsSymbolicLink") .+   (`ioeSetOsPath` path)) `modifyIOError` do+     fileTypeIsLink . fileTypeFromMetadata <$> getSymbolicLinkMetadata path++-- | Retrieve the target path of either a file or directory symbolic link.+-- The returned path may not be absolute, may not exist, and may not even be a+-- valid path.+--+-- On Windows systems, this calls @DeviceIoControl@ with+-- @FSCTL_GET_REPARSE_POINT@.  In addition to symbolic links, the function+-- also works on junction points.  On POSIX systems, this calls @readlink@.+--+-- Windows-specific errors: This operation may fail with+-- 'illegalOperationErrorType' if the file system does not support symbolic+-- links.+getSymbolicLinkTarget :: OsPath -> IO OsPath+getSymbolicLinkTarget path =+  (`ioeAddLocation` "getSymbolicLinkTarget") `modifyIOError` do+    readSymbolicLink path++-- | Obtain the time at which the file or directory was last accessed.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to read+--   the access time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- Caveat for POSIX systems: This function returns a timestamp with sub-second+-- resolution only if this package is compiled against @unix-2.6.0.0@ or later+-- and the underlying filesystem supports them.+--+getAccessTime :: OsPath -> IO UTCTime+getAccessTime path =+  (`ioeAddLocation` "getAccessTime") `modifyIOError` do+    accessTimeFromMetadata <$> getFileMetadata (emptyToCurDir path)++-- | Obtain the time at which the file or directory was last modified.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to read+--   the modification time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- Caveat for POSIX systems: This function returns a timestamp with sub-second+-- resolution only if this package is compiled against @unix-2.6.0.0@ or later+-- and the underlying filesystem supports them.+--+getModificationTime :: OsPath -> IO UTCTime+getModificationTime path =+  (`ioeAddLocation` "getModificationTime") `modifyIOError` do+    modificationTimeFromMetadata <$> getFileMetadata (emptyToCurDir path)++-- | Change the time at which the file or directory was last accessed.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to alter the+--   access time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- Some caveats for POSIX systems:+--+-- * Not all systems support @utimensat@, in which case the function can only+--   emulate the behavior by reading the modification time and then setting+--   both the access and modification times together.  On systems where+--   @utimensat@ is supported, the access time is set atomically with+--   nanosecond precision.+--+-- * If compiled against a version of @unix@ prior to @2.7.0.0@, the function+--   would not be able to set timestamps with sub-second resolution.  In this+--   case, there would also be loss of precision in the modification time.+--+setAccessTime :: OsPath -> UTCTime -> IO ()+setAccessTime path atime =+  (`ioeAddLocation` "setAccessTime") `modifyIOError` do+    setFileTimes path (Just atime, Nothing)++-- | Change the time at which the file or directory was last modified.+--+-- The operation may fail with:+--+-- * 'isPermissionError' if the user is not permitted to alter the+--   modification time; or+--+-- * 'isDoesNotExistError' if the file or directory does not exist.+--+-- * 'InvalidArgument' on FAT32 file system if the time is before+--   DOS Epoch (1 January 1980).+--+-- Some caveats for POSIX systems:+--+-- * Not all systems support @utimensat@, in which case the function can only+--   emulate the behavior by reading the access time and then setting both the+--   access and modification times together.  On systems where @utimensat@ is+--   supported, the modification time is set atomically with nanosecond+--   precision.+--+-- * If compiled against a version of @unix@ prior to @2.7.0.0@, the function+--   would not be able to set timestamps with sub-second resolution.  In this+--   case, there would also be loss of precision in the access time.+--+setModificationTime :: OsPath -> UTCTime -> IO ()+setModificationTime path mtime =+  (`ioeAddLocation` "setModificationTime") `modifyIOError` do+    setFileTimes path (Nothing, Just mtime)++setFileTimes :: OsPath -> (Maybe UTCTime, Maybe UTCTime) -> IO ()+setFileTimes _ (Nothing, Nothing) = pure ()+setFileTimes path (atime, mtime) =+  ((`ioeAddLocation` "setFileTimes") .+   (`ioeSetOsPath` path)) `modifyIOError` do+    setTimes (emptyToCurDir path)+             (utcTimeToPOSIXSeconds <$> atime, utcTimeToPOSIXSeconds <$> mtime)++{- | Returns the current user's home directory.++The directory returned is expected to be writable by the current user,+but note that it isn't generally considered good practice to store+application-specific data here; use 'getXdgDirectory' or+'getAppUserDataDirectory' instead.++On Unix, 'getHomeDirectory' behaves as follows:++* Returns $HOME env variable if set (including to an empty string).+* Otherwise uses home directory returned by @getpwuid_r@ using the UID of the+  current process' user. This basically reads the @\/etc\/passwd@ file. An+  empty home directory field is considered valid.++On Windows, the system is queried for a suitable path; a typical path might be+@C:\/Users\//\<user\>/@.++The operation may fail with:++* @UnsupportedOperation@+The operating system has no notion of home directory.++* 'isDoesNotExistError'+The home directory for the current user does not exist, or+cannot be found.+-}+getHomeDirectory :: IO OsPath+getHomeDirectory =+  (`ioeAddLocation` "getHomeDirectory") `modifyIOError` do+    getHomeDirectoryInternal++-- | Obtain the paths to special directories for storing user-specific+--   application data, configuration, and cache files, conforming to the+--   <http://standards.freedesktop.org/basedir-spec/basedir-spec-latest.html XDG Base Directory Specification>.+--   Compared with 'getAppUserDataDirectory', this function provides a more+--   fine-grained hierarchy as well as greater flexibility for the user.+--+--   On Windows, 'XdgData' and 'XdgConfig' usually map to the same directory+--   unless overridden.+--+--   Refer to the docs of 'XdgDirectory' for more details.+--+--   The second argument is usually the name of the application.  Since it+--   will be integrated into the path, it must consist of valid path+--   characters.  Note: if the second argument is an absolute path, it will+--   just return the second argument.+--+--   Note: The directory may not actually exist, in which case you would need+--   to create it with file mode @700@ (i.e. only accessible by the owner).+--+--   As of 1.3.5.0, the environment variable is ignored if set to a relative+--   path, per revised XDG Base Directory Specification.  See+--   <https://github.com/haskell/directory/issues/100 #100>.+getXdgDirectory :: XdgDirectory         -- ^ which special directory+                -> OsPath               -- ^ a relative path that is appended+                                        --   to the path; if empty, the base+                                        --   path is returned+                -> IO OsPath+getXdgDirectory xdgDir suffix =+  (`ioeAddLocation` "getXdgDirectory") `modifyIOError` do+    simplify . (</> suffix) <$> do+      env <- lookupEnvOs $ case xdgDir of+        XdgData   -> os "XDG_DATA_HOME"+        XdgConfig -> os "XDG_CONFIG_HOME"+        XdgCache  -> os "XDG_CACHE_HOME"+        XdgState  -> os "XDG_STATE_HOME"+      case env of+        Just path | isAbsolute path -> pure path+        _ -> getXdgDirectoryFallback getHomeDirectory xdgDir++-- | Similar to 'getXdgDirectory' but retrieves the entire list of XDG+-- directories.+--+-- On Windows, 'XdgDataDirs' and 'XdgConfigDirs' usually map to the same list+-- of directories unless overridden.+--+-- Refer to the docs of 'XdgDirectoryList' for more details.+getXdgDirectoryList :: XdgDirectoryList -- ^ which special directory list+                    -> IO [OsPath]+getXdgDirectoryList xdgDirs =+  (`ioeAddLocation` "getXdgDirectoryList") `modifyIOError` do+    env <- lookupEnvOs $ case xdgDirs of+      XdgDataDirs   -> os "XDG_DATA_DIRS"+      XdgConfigDirs -> os "XDG_CONFIG_DIRS"+    case env of+      Nothing    -> getXdgDirectoryListFallback xdgDirs+      Just paths -> pure (splitSearchPath paths)++-- | Obtain the path to a special directory for storing user-specific+--   application data (traditional Unix location).  Newer applications may+--   prefer the the XDG-conformant location provided by 'getXdgDirectory'+--   (<https://github.com/haskell/directory/issues/6#issuecomment-96521020 migration guide>).+--+--   The argument is usually the name of the application.  Since it will be+--   integrated into the path, it must consist of valid path characters.+--+--   * On Unix-like systems, the path is @~\/./\<app\>/@.+--   * On Windows, the path is @%APPDATA%\//\<app\>/@+--     (e.g. @C:\/Users\//\<user\>/\/AppData\/Roaming\//\<app\>/@)+--+--   Note: the directory may not actually exist, in which case you would need+--   to create it.  It is expected that the parent directory exists and is+--   writable.+--+--   The operation may fail with:+--+--   * @UnsupportedOperation@+--     The operating system has no notion of application-specific data+--     directory.+--+--   * 'isDoesNotExistError'+--     The home directory for the current user does not exist, or cannot be+--     found.+--+getAppUserDataDirectory :: OsPath     -- ^ a relative path that is appended+                                        --   to the path+                        -> IO OsPath+getAppUserDataDirectory appName = do+  (`ioeAddLocation` "getAppUserDataDirectory") `modifyIOError` do+    getAppUserDataDirectoryInternal appName++{- | Returns the current user's document directory.++The directory returned is expected to be writable by the current user,+but note that it isn't generally considered good practice to store+application-specific data here; use 'getXdgDirectory' or+'getAppUserDataDirectory' instead.++On Unix, 'getUserDocumentsDirectory' returns the value of the @HOME@+environment variable.  On Windows, the system is queried for a+suitable path; a typical path might be @C:\/Users\//\<user\>/\/Documents@.++The operation may fail with:++* @UnsupportedOperation@+The operating system has no notion of document directory.++* 'isDoesNotExistError'+The document directory for the current user does not exist, or+cannot be found.+-}+getUserDocumentsDirectory :: IO OsPath+getUserDocumentsDirectory = do+  (`ioeAddLocation` "getUserDocumentsDirectory") `modifyIOError` do+    getUserDocumentsDirectoryInternal++{- | Returns the current directory for temporary files.++On Unix, 'getTemporaryDirectory' returns the value of the @TMPDIR@+environment variable or \"\/tmp\" if the variable isn\'t defined.+On Windows, the function checks for the existence of environment variables in+the following order and uses the first path found:++*+TMP environment variable.++*+TEMP environment variable.++*+USERPROFILE environment variable.++*+The Windows directory++The operation may fail with:++* @UnsupportedOperation@+The operating system has no notion of temporary directory.++The function doesn\'t verify whether the path exists.+-}+getTemporaryDirectory :: IO OsPath+getTemporaryDirectory = getTemporaryDirectoryInternal++-- | Get the contents of the @PATH@ environment variable.+getExecSearchPath :: IO [OsPath]+getExecSearchPath = getPath
changelog.md view
@@ -1,13 +1,259 @@ Changelog for the [`directory`][1] package ========================================== +## 1.3.11.0 (May 2026)++  * Cabal flag `os-string` was removed in favor of `impl(ghc >= 9.2)`.+    ([#176](https://github.com/haskell/directory/issues/176))+  * Enable close-on-exec flag when copying files and relax `file-io` version+    bounds to support 0.2.0. Note that close-on-exec when copying is only+    enabled on `file-io` 0.2.0 or later.+    ([#203](https://github.com/haskell/directory/issues/203))+  * Relax `time` version bounds to support 1.16.++## 1.3.10.1 (Jan 2026)++  * Make `findExecutable` return `Nothing` on absolute paths that aren't+    executable.+    ([#187](https://github.com/haskell/directory/issues/187))+  * Ensure `removePathForcibly` removes write-protected files on all+    platforms.+    ([#194](https://github.com/haskell/directory/issues/194))++## 1.3.10.0 (Dec 2025)++  * Add `getExecSearchPath` as replacement for+    `System.FilePath.getSearchPath`.+    ([#198](https://github.com/haskell/directory/pull/198))+  * The [extended-length prefix][extended-length prefix] (`\\?\`) is no longer+    implicitly prepended to Windows UNC paths to avoid triggering a Win32+    implementation bug. Clients using long UNC paths should find alternatives+    to [enable long paths][enable long paths].+    ([#206](https://github.com/haskell/directory/issues/206))++[extended-length prefix]: https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation#:~:text=%5C%5C%3F%5C+[enable long paths]: https://learn.microsoft.com/en-us/windows/win32/fileio/maximum-file-path-limitation#enable-long-paths-in-windows-10-version-1607-and-later++## 1.3.9.0 (Oct 2024)++  * Rely on `file-io` for file I/O.+  * Drop support for `base` older than 4.12.0.+  * Resolve TOCTOU issue with `removeDirectoryRecursive` and+    `removePathForcibly` on POSIX systems.+    (part of [#97](https://github.com/haskell/directory/issues/97))+  * `findExecutable ""` now returns `Nothing`, matching non-Windows systems+    ([#180](https://github.com/haskell/directory/issues/180))++## 1.3.8.5 (May 2024)++  * Fix regression that causes copying of nonexistent files to create empty+    files.+    ([#177](https://github.com/haskell/directory/issues/177))++## 1.3.8.4 (Apr 2024)++  * Relax `time` version bounds to support 1.14.+    ([#171](https://github.com/haskell/directory/issues/171))+  * Relax `base` version bounds to support 4.20.+    ([#173](https://github.com/haskell/directory/issues/173))+  * Relax `filepath` version bounds to support 1.4.300 when `os-string` is+    unavailable.+    ([#175](https://github.com/haskell/directory/issues/175))++## 1.3.8.3 (Jan 2024)++  * Relax `Win32` version bounds to support 2.14.0.0.+    ([#166](https://github.com/haskell/directory/issues/166))+  * Fix regression in `canonicalizePath` on Windows UNC paths.+    ([#170](https://github.com/haskell/directory/issues/170))++## 1.3.8.2 (Dec 2023)++  * Relax `base` version bounds to support 4.19.+    ([#157](https://github.com/haskell/directory/pull/157))+  * Support filepath >= 1.5.0.0 and os-string.+    ([#164](https://github.com/haskell/directory/issues/164))++## 1.3.8.1 (Feb 2023)++  * Use CApiFFI for utimensat.+    ([#145](https://github.com/haskell/directory/pull/145))+  * Relax `base` version bounds to support 4.18.+    ([#151](https://github.com/haskell/directory/pull/151))++## 1.3.8.0 (Sep 2022)++  * Drop support for `base` older than 4.11.0.+  * Drop support for `filepath` older than 1.4.100.+  * Drop support for `time` older than 1.8.0.+  * Drop support for `unix` older than 2.8.0.+  * Drop support for `Win32` older than 2.13.3.+  * Modules in `directory` are no longer considered+    [Safe](https://downloads.haskell.org/ghc/latest/docs/users_guide/exts/safe_haskell.html)+    because the `System.OsPath` dependency is no longer Safe.+  * A new module, `System.Directory.OsPath`, has been introduced to support+    AFPP (`OsPath` and `OsString`) with an analogous API. The old module,+    `System.Directory`, shall be in maintenance mode as new features will no+    longer be accepted there.+    ([#136](https://github.com/haskell/directory/pull/136))+  * `removePathForcibly` no longer changes permissions of files on non-Windows+    systems.  ([#135](https://github.com/haskell/directory/issues/135))++## 1.3.7.1 (Jul 2022)++  * Relax `time` version bounds to support 1.12.+  * Relax `Win32` version bounds to support 2.13.+  * Relax `base` version bounds to support 4.17.++## 1.3.7.0 (Sep 2021)++  * `getXdgDirectory` now supports `XdgState` (`XDG_STATE_HOME`).+    ([#121](https://github.com/haskell/directory/pull/121))++## 1.3.6.2 (May 2021)++  * Relax `Win32` version bounds to support 2.11.+  * Relax `time` version bounds to support 1.11.+  * Relax `base` version bounds to support 4.16.++## 1.3.6.1 (March 2020)++  * Relax `time` version bounds to support 1.10.++## 1.3.6.0 (January 2020)++  * On non-Windows platforms, `getHomeDirectory` will fall back to+    `getpwuid_r` if `HOME` is not set.+    ([#102](https://github.com/haskell/directory/issues/102))++## 1.3.5.0 (December 2019)++  * Revert change introduced in the version `1.3.3.2`: Non-absolute `XDG_*`+    environment variables are ignored.  This behavior is according to+    [*XDG Base Directory Specification* version 0.7](https://specifications.freedesktop.org/basedir-spec/0.7/ar01s02.html)+    ([#100](https://github.com/haskell/directory/issues/100))++## 1.3.4.0 (July 2019)++  * `getXdgDirectory` and `getXdgDirectoryList` on Windows will now respect+    the XDG environment variables if present.+    ([#95](https://github.com/haskell/directory/issues/95))++## 1.3.3.2 (January 2019)++  * `getXdgDirectory` will no longer reject environment variables containing+    relative paths.+    ([#87](https://github.com/haskell/directory/issues/87))++## 1.3.3.1 (August 2018)++  * `doesDirectoryExist` and `doesPathExist` reject empty paths once again,+    reversing an undocumented change introduced in 1.3.1.1.+    ([#84](https://github.com/haskell/directory/issues/84))++## 1.3.3.0 (June 2018)++  * Relax `unix` version bounds to support 2.8.++  * Relax `Win32` version bounds to support 2.8.++  * Use `SYMBOLIC_LINK_FLAG_ALLOW_UNPRIVILEGED_CREATE` when creating symbolic+    links on Windows, if possible.+    ([#83](https://github.com/haskell/directory/issues/83))++## 1.3.2.2 (April 2018)++  * Relax `base` version bounds to support 4.12.++## 1.3.2.1 (March 2018)++  * Relax `Win32` version bounds to support 2.7.++## 1.3.2.0 (January 2018)++  * Relax `time` version bounds to support 1.9.++  * Implement `getXdgDirectoryList` and `XdgDirectoryList`.+    ([#78](https://github.com/haskell/directory/issues/78))++## 1.3.1.5 (October 2017)++  * Rename the internal header `windows.h` to avoid GHC#14312.+    ([#77](https://github.com/haskell/directory/issues/77))++## 1.3.1.4 (September 2017)++  * Fix `Win32` version 2.6 compatibility.+    ([#75](https://github.com/haskell/directory/pull/75))++## 1.3.1.3 (September 2017)++  * Relax `Win32` version bounds to support 2.6.++## 1.3.1.2 (September 2017)++  * Relax `base` version bounds to support 4.11.+    ([#74](https://github.com/haskell/directory/pull/74))++## 1.3.1.1 (March 2017)++  * Fix a bug where `createFileLink` and `createDirectoryLink` failed to+    handle `..` in absolute paths.++  * Improve support (partially) for paths longer than 260 characters on+    Windows.  To achieve this, many functions will now automatically prepend+    `\\?\` before calling the Windows API.  As a side effect, the `\\?\`+    prefix may show up in the error messages of the affected functions.++  * `makeAbsolute` can now handle drive-relative paths on Windows such as+    `C:foobar`++## 1.3.1.0 (March 2017)++  * `findFile` (and similar functions): when an absolute path is given, the+    list of search directories is now completely ignored.  Previously, if the+    list was empty, `findFile` would always fail.+    ([#72](https://github.com/haskell/directory/issues/72))++  * For symbolic links on Windows, the following functions had previously+    interpreted paths as referring to the links themselves rather than their+    targets.  This was inconsistent with other platforms and has been fixed.+      * `getFileSize`+      * `doesPathExist`+      * `doesDirectoryExist`+      * `doesFileExist`++  * Fix incorrect location info in errors from `pathIsSymbolicLink`.++  * Add functions for symbolic link manipulation:+      * `createFileLink`+      * `createDirectoryLink`+      * `removeDirectoryLink`+      * `getSymbolicLinkTarget`++  * `canonicalizePath` can now resolve broken symbolic links too.+    ([#64](https://github.com/haskell/directory/issues/64))++## 1.3.0.2 (February 2017)++  * [optimization] Increase internal buffer size of `copyFile`+    ([#69](https://github.com/haskell/directory/pull/69))++  * Relax `time` version bounds to support 1.8.++## 1.3.0.1 (January 2017)++  * Relax `Win32` version bounds to support 2.5.+    ([#67](https://github.com/haskell/directory/pull/67))+ ## 1.3.0.0 (December 2016) -  * Drop trailing slashes in `canonicalizePath`+  * **[breaking]** Drop trailing slashes in `canonicalizePath`     ([#63](https://github.com/haskell/directory/issues/63)) -  * Rename `isSymbolicLink` to `pathIsSymbolicLink`.  The old name will remain-    available but may be removed in the next major release.+  * **[deprecation]** Rename `isSymbolicLink` to `pathIsSymbolicLink`.  The+    old name will remain available but may be removed in the next major+    release.     ([#52](https://github.com/haskell/directory/issues/52))    * Changed `canonicalizePath` to dereference symbolic links even if it points
configure view
@@ -1,4378 +1,4426 @@ #! /bin/sh # Guess values for system-dependent variables and create Makefiles.-# Generated by GNU Autoconf 2.69 for Haskell directory package 1.0.-#-# Report bugs to <libraries@haskell.org>.-#-#-# Copyright (C) 1992-1996, 1998-2012 Free Software Foundation, Inc.-#-#-# This configure script is free software; the Free Software Foundation-# gives unlimited permission to copy, distribute and modify it.-## -------------------- ##-## M4sh Initialization. ##-## -------------------- ##--# Be more Bourne compatible-DUALCASE=1; export DUALCASE # for MKS sh-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then :-  emulate sh-  NULLCMD=:-  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which-  # is contrary to our usage.  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Some functions are actually named+    something starting with __ and the normal name is an alias.  */+#if defined __stub_$2 || defined __stub___$2+choke me+#endif++int+main (void)+{+return $2 ();+  ;+  return 0;+}+_ACEOF+if ac_fn_c_try_link "$LINENO"+then :+  eval "$3=yes"+else $as_nop+  eval "$3=no"+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam \+    conftest$ac_exeext conftest.$ac_ext+fi+eval ac_res=\$$3+	       { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_res" >&5+printf "%s\n" "$ac_res" >&6; }+  eval $as_lineno_stack; ${as_lineno_stack:+:} unset as_lineno++} # ac_fn_c_check_func+ac_configure_args_raw=+for ac_arg+do+  case $ac_arg in+  *\'*)+    ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;+  esac+  as_fn_append ac_configure_args_raw " '$ac_arg'"+done++case $ac_configure_args_raw in+  *$as_nl*)+    ac_safe_unquote= ;;+  *)+    ac_unsafe_z='|&;<>()$`\\"*?[ ''	' # This string ends in space, tab.+    ac_unsafe_a="$ac_unsafe_z#~"+    ac_safe_unquote="s/ '\\([^$ac_unsafe_a][^$ac_unsafe_z]*\\)'/ \\1/g"+    ac_configure_args_raw=`      printf "%s\n" "$ac_configure_args_raw" | sed "$ac_safe_unquote"`;;+esac++cat >config.log <<_ACEOF+This file contains any messages produced by compilers while+running configure, to aid debugging if configure makes a mistake.++It was created by Haskell directory package $as_me 1.0, which was+generated by GNU Autoconf 2.71.  Invocation command line was++  $ $0$ac_configure_args_raw++_ACEOF+exec 5>>config.log+{+cat <<_ASUNAME+## --------- ##+## Platform. ##+## --------- ##++hostname = `(hostname || uname -n) 2>/dev/null | sed 1q`+uname -m = `(uname -m) 2>/dev/null || echo unknown`+uname -r = `(uname -r) 2>/dev/null || echo unknown`+uname -s = `(uname -s) 2>/dev/null || echo unknown`+uname -v = `(uname -v) 2>/dev/null || echo unknown`++/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null || echo unknown`+/bin/uname -X     = `(/bin/uname -X) 2>/dev/null     || echo unknown`++/bin/arch              = `(/bin/arch) 2>/dev/null              || echo unknown`+/usr/bin/arch -k       = `(/usr/bin/arch -k) 2>/dev/null       || echo unknown`+/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null || echo unknown`+/usr/bin/hostinfo      = `(/usr/bin/hostinfo) 2>/dev/null      || echo unknown`+/bin/machine           = `(/bin/machine) 2>/dev/null           || echo unknown`+/usr/bin/oslevel       = `(/usr/bin/oslevel) 2>/dev/null       || echo unknown`+/bin/universe          = `(/bin/universe) 2>/dev/null          || echo unknown`++_ASUNAME++as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    printf "%s\n" "PATH: $as_dir"+  done+IFS=$as_save_IFS++} >&5++cat >&5 <<_ACEOF+++## ----------- ##+## Core tests. ##+## ----------- ##++_ACEOF+++# Keep a trace of the command line.+# Strip out --no-create and --no-recursion so they do not pile up.+# Strip out --silent because we don't want to record it for future runs.+# Also quote any args containing shell meta-characters.+# Make two passes to allow for proper duplicate-argument suppression.+ac_configure_args=+ac_configure_args0=+ac_configure_args1=+ac_must_keep_next=false+for ac_pass in 1 2+do+  for ac_arg+  do+    case $ac_arg in+    -no-create | --no-c* | -n | -no-recursion | --no-r*) continue ;;+    -q | -quiet | --quiet | --quie | --qui | --qu | --q \+    | -silent | --silent | --silen | --sile | --sil)+      continue ;;+    *\'*)+      ac_arg=`printf "%s\n" "$ac_arg" | sed "s/'/'\\\\\\\\''/g"` ;;+    esac+    case $ac_pass in+    1) as_fn_append ac_configure_args0 " '$ac_arg'" ;;+    2)+      as_fn_append ac_configure_args1 " '$ac_arg'"+      if test $ac_must_keep_next = true; then+	ac_must_keep_next=false # Got value, back to normal.+      else+	case $ac_arg in+	  *=* | --config-cache | -C | -disable-* | --disable-* \+	  | -enable-* | --enable-* | -gas | --g* | -nfp | --nf* \+	  | -q | -quiet | --q* | -silent | --sil* | -v | -verb* \+	  | -with-* | --with-* | -without-* | --without-* | --x)+	    case "$ac_configure_args0 " in+	      "$ac_configure_args1"*" '$ac_arg' "* ) continue ;;+	    esac+	    ;;+	  -* ) ac_must_keep_next=true ;;+	esac+      fi+      as_fn_append ac_configure_args " '$ac_arg'"+      ;;+    esac+  done+done+{ ac_configure_args0=; unset ac_configure_args0;}+{ ac_configure_args1=; unset ac_configure_args1;}++# When interrupted or exit'd, cleanup temporary files, and complete+# config.log.  We remove comments because anyway the quotes in there+# would cause problems or look ugly.+# WARNING: Use '\'' to represent an apostrophe within the trap.+# WARNING: Do not start the trap code with a newline, due to a FreeBSD 4.0 bug.+trap 'exit_status=$?+  # Sanitize IFS.+  IFS=" ""	$as_nl"+  # Save into config.log some information that might help in debugging.+  {+    echo++    printf "%s\n" "## ---------------- ##+## Cache variables. ##+## ---------------- ##"+    echo+    # The following way of writing the cache mishandles newlines in values,+(+  for ac_var in `(set) 2>&1 | sed -n '\''s/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'\''`; do+    eval ac_val=\$$ac_var+    case $ac_val in #(+    *${as_nl}*)+      case $ac_var in #(+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;+      esac+      case $ac_var in #(+      _ | IFS | as_nl) ;; #(+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(+      *) { eval $ac_var=; unset $ac_var;} ;;+      esac ;;+    esac+  done+  (set) 2>&1 |+    case $as_nl`(ac_space='\'' '\''; set) 2>&1` in #(+    *${as_nl}ac_space=\ *)+      sed -n \+	"s/'\''/'\''\\\\'\'''\''/g;+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\''\\2'\''/p"+      ;; #(+    *)+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"+      ;;+    esac |+    sort+)+    echo++    printf "%s\n" "## ----------------- ##+## Output variables. ##+## ----------------- ##"+    echo+    for ac_var in $ac_subst_vars+    do+      eval ac_val=\$$ac_var+      case $ac_val in+      *\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;+      esac+      printf "%s\n" "$ac_var='\''$ac_val'\''"+    done | sort+    echo++    if test -n "$ac_subst_files"; then+      printf "%s\n" "## ------------------- ##+## File substitutions. ##+## ------------------- ##"+      echo+      for ac_var in $ac_subst_files+      do+	eval ac_val=\$$ac_var+	case $ac_val in+	*\'\''*) ac_val=`printf "%s\n" "$ac_val" | sed "s/'\''/'\''\\\\\\\\'\'''\''/g"`;;+	esac+	printf "%s\n" "$ac_var='\''$ac_val'\''"+      done | sort+      echo+    fi++    if test -s confdefs.h; then+      printf "%s\n" "## ----------- ##+## confdefs.h. ##+## ----------- ##"+      echo+      cat confdefs.h+      echo+    fi+    test "$ac_signal" != 0 &&+      printf "%s\n" "$as_me: caught signal $ac_signal"+    printf "%s\n" "$as_me: exit $exit_status"+  } >&5+  rm -f core *.core core.conftest.* &&+    rm -f -r conftest* confdefs* conf$$* $ac_clean_files &&+    exit $exit_status+' 0+for ac_signal in 1 2 13 15; do+  trap 'ac_signal='$ac_signal'; as_fn_exit 1' $ac_signal+done+ac_signal=0++# confdefs.h avoids OS command line length limits that DEFS can exceed.+rm -f -r conftest* confdefs.h++printf "%s\n" "/* confdefs.h */" > confdefs.h++# Predefined preprocessor variables.++printf "%s\n" "#define PACKAGE_NAME \"$PACKAGE_NAME\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_TARNAME \"$PACKAGE_TARNAME\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_VERSION \"$PACKAGE_VERSION\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_STRING \"$PACKAGE_STRING\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_BUGREPORT \"$PACKAGE_BUGREPORT\"" >>confdefs.h++printf "%s\n" "#define PACKAGE_URL \"$PACKAGE_URL\"" >>confdefs.h+++# Let the site file select an alternate cache file if it wants to.+# Prefer an explicitly selected file to automatically selected ones.+if test -n "$CONFIG_SITE"; then+  ac_site_files="$CONFIG_SITE"+elif test "x$prefix" != xNONE; then+  ac_site_files="$prefix/share/config.site $prefix/etc/config.site"+else+  ac_site_files="$ac_default_prefix/share/config.site $ac_default_prefix/etc/config.site"+fi++for ac_site_file in $ac_site_files+do+  case $ac_site_file in #(+  */*) :+     ;; #(+  *) :+    ac_site_file=./$ac_site_file ;;+esac+  if test -f "$ac_site_file" && test -r "$ac_site_file"; then+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading site script $ac_site_file" >&5+printf "%s\n" "$as_me: loading site script $ac_site_file" >&6;}+    sed 's/^/| /' "$ac_site_file" >&5+    . "$ac_site_file" \+      || { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? "failed to load site script $ac_site_file+See \`config.log' for more details" "$LINENO" 5; }+  fi+done++if test -r "$cache_file"; then+  # Some versions of bash will fail to source /dev/null (special files+  # actually), so we avoid doing that.  DJGPP emulates it as a regular file.+  if test /dev/null != "$cache_file" && test -f "$cache_file"; then+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: loading cache $cache_file" >&5+printf "%s\n" "$as_me: loading cache $cache_file" >&6;}+    case $cache_file in+      [\\/]* | ?:[\\/]* ) . "$cache_file";;+      *)                      . "./$cache_file";;+    esac+  fi+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating cache $cache_file" >&5+printf "%s\n" "$as_me: creating cache $cache_file" >&6;}+  >$cache_file+fi++# Test code for whether the C compiler supports C89 (global declarations)+ac_c_conftest_c89_globals='+/* Does the compiler advertise C89 conformance?+   Do not test the value of __STDC__, because some compilers set it to 0+   while being otherwise adequately conformant. */+#if !defined __STDC__+# error "Compiler does not advertise C89 conformance"+#endif++#include <stddef.h>+#include <stdarg.h>+struct stat;+/* Most of the following tests are stolen from RCS 5.7 src/conf.sh.  */+struct buf { int x; };+struct buf * (*rcsopen) (struct buf *, struct stat *, int);+static char *e (p, i)+     char **p;+     int i;+{+  return p[i];+}+static char *f (char * (*g) (char **, int), char **p, ...)+{+  char *s;+  va_list v;+  va_start (v,p);+  s = g (p, va_arg (v,int));+  va_end (v);+  return s;+}++/* OSF 4.0 Compaq cc is some sort of almost-ANSI by default.  It has+   function prototypes and stuff, but not \xHH hex character constants.+   These do not provoke an error unfortunately, instead are silently treated+   as an "x".  The following induces an error, until -std is added to get+   proper ANSI mode.  Curiously \x00 != x always comes out true, for an+   array size at least.  It is necessary to write \x00 == 0 to get something+   that is true only with -std.  */+int osf4_cc_array ['\''\x00'\'' == 0 ? 1 : -1];++/* IBM C 6 for AIX is almost-ANSI by default, but it replaces macro parameters+   inside strings and character constants.  */+#define FOO(x) '\''x'\''+int xlc6_cc_array[FOO(a) == '\''x'\'' ? 1 : -1];++int test (int i, double x);+struct s1 {int (*f) (int a);};+struct s2 {int (*f) (double a);};+int pairnames (int, char **, int *(*)(struct buf *, struct stat *, int),+               int, int);'++# Test code for whether the C compiler supports C89 (body of main).+ac_c_conftest_c89_main='+ok |= (argc == 0 || f (e, argv, 0) != argv[0] || f (e, argv, 1) != argv[1]);+'++# Test code for whether the C compiler supports C99 (global declarations)+ac_c_conftest_c99_globals='+// Does the compiler advertise C99 conformance?+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 199901L+# error "Compiler does not advertise C99 conformance"+#endif++#include <stdbool.h>+extern int puts (const char *);+extern int printf (const char *, ...);+extern int dprintf (int, const char *, ...);+extern void *malloc (size_t);++// Check varargs macros.  These examples are taken from C99 6.10.3.5.+// dprintf is used instead of fprintf to avoid needing to declare+// FILE and stderr.+#define debug(...) dprintf (2, __VA_ARGS__)+#define showlist(...) puts (#__VA_ARGS__)+#define report(test,...) ((test) ? puts (#test) : printf (__VA_ARGS__))+static void+test_varargs_macros (void)+{+  int x = 1234;+  int y = 5678;+  debug ("Flag");+  debug ("X = %d\n", x);+  showlist (The first, second, and third items.);+  report (x>y, "x is %d but y is %d", x, y);+}++// Check long long types.+#define BIG64 18446744073709551615ull+#define BIG32 4294967295ul+#define BIG_OK (BIG64 / BIG32 == 4294967297ull && BIG64 % BIG32 == 0)+#if !BIG_OK+  #error "your preprocessor is broken"+#endif+#if BIG_OK+#else+  #error "your preprocessor is broken"+#endif+static long long int bignum = -9223372036854775807LL;+static unsigned long long int ubignum = BIG64;++struct incomplete_array+{+  int datasize;+  double data[];+};++struct named_init {+  int number;+  const wchar_t *name;+  double average;+};++typedef const char *ccp;++static inline int+test_restrict (ccp restrict text)+{+  // See if C++-style comments work.+  // Iterate through items via the restricted pointer.+  // Also check for declarations in for loops.+  for (unsigned int i = 0; *(text+i) != '\''\0'\''; ++i)+    continue;+  return 0;+}++// Check varargs and va_copy.+static bool+test_varargs (const char *format, ...)+{+  va_list args;+  va_start (args, format);+  va_list args_copy;+  va_copy (args_copy, args);++  const char *str = "";+  int number = 0;+  float fnumber = 0;++  while (*format)+    {+      switch (*format++)+	{+	case '\''s'\'': // string+	  str = va_arg (args_copy, const char *);+	  break;+	case '\''d'\'': // int+	  number = va_arg (args_copy, int);+	  break;+	case '\''f'\'': // float+	  fnumber = va_arg (args_copy, double);+	  break;+	default:+	  break;+	}+    }+  va_end (args_copy);+  va_end (args);++  return *str && number && fnumber;+}+'++# Test code for whether the C compiler supports C99 (body of main).+ac_c_conftest_c99_main='+  // Check bool.+  _Bool success = false;+  success |= (argc != 0);++  // Check restrict.+  if (test_restrict ("String literal") == 0)+    success = true;+  char *restrict newvar = "Another string";++  // Check varargs.+  success &= test_varargs ("s, d'\'' f .", "string", 65, 34.234);+  test_varargs_macros ();++  // Check flexible array members.+  struct incomplete_array *ia =+    malloc (sizeof (struct incomplete_array) + (sizeof (double) * 10));+  ia->datasize = 10;+  for (int i = 0; i < ia->datasize; ++i)+    ia->data[i] = i * 1.234;++  // Check named initializers.+  struct named_init ni = {+    .number = 34,+    .name = L"Test wide string",+    .average = 543.34343,+  };++  ni.number = 58;++  int dynamic_array[ni.number];+  dynamic_array[0] = argv[0][0];+  dynamic_array[ni.number - 1] = 543;++  // work around unused variable warnings+  ok |= (!success || bignum == 0LL || ubignum == 0uLL || newvar[0] == '\''x'\''+	 || dynamic_array[ni.number - 1] != 543);+'++# Test code for whether the C compiler supports C11 (global declarations)+ac_c_conftest_c11_globals='+// Does the compiler advertise C11 conformance?+#if !defined __STDC_VERSION__ || __STDC_VERSION__ < 201112L+# error "Compiler does not advertise C11 conformance"+#endif++// Check _Alignas.+char _Alignas (double) aligned_as_double;+char _Alignas (0) no_special_alignment;+extern char aligned_as_int;+char _Alignas (0) _Alignas (int) aligned_as_int;++// Check _Alignof.+enum+{+  int_alignment = _Alignof (int),+  int_array_alignment = _Alignof (int[100]),+  char_alignment = _Alignof (char)+};+_Static_assert (0 < -_Alignof (int), "_Alignof is signed");++// Check _Noreturn.+int _Noreturn does_not_return (void) { for (;;) continue; }++// Check _Static_assert.+struct test_static_assert+{+  int x;+  _Static_assert (sizeof (int) <= sizeof (long int),+                  "_Static_assert does not work in struct");+  long int y;+};++// Check UTF-8 literals.+#define u8 syntax error!+char const utf8_literal[] = u8"happens to be ASCII" "another string";++// Check duplicate typedefs.+typedef long *long_ptr;+typedef long int *long_ptr;+typedef long_ptr long_ptr;++// Anonymous structures and unions -- taken from C11 6.7.2.1 Example 1.+struct anonymous+{+  union {+    struct { int i; int j; };+    struct { int k; long int l; } w;+  };+  int m;+} v1;+'++# Test code for whether the C compiler supports C11 (body of main).+ac_c_conftest_c11_main='+  _Static_assert ((offsetof (struct anonymous, i)+		   == offsetof (struct anonymous, w.k)),+		  "Anonymous union alignment botch");+  v1.i = 2;+  v1.w.k = 5;+  ok |= v1.i != 5;+'++# Test code for whether the C compiler supports C11 (complete).+ac_c_conftest_c11_program="${ac_c_conftest_c89_globals}+${ac_c_conftest_c99_globals}+${ac_c_conftest_c11_globals}++int+main (int argc, char **argv)+{+  int ok = 0;+  ${ac_c_conftest_c89_main}+  ${ac_c_conftest_c99_main}+  ${ac_c_conftest_c11_main}+  return ok;+}+"++# Test code for whether the C compiler supports C99 (complete).+ac_c_conftest_c99_program="${ac_c_conftest_c89_globals}+${ac_c_conftest_c99_globals}++int+main (int argc, char **argv)+{+  int ok = 0;+  ${ac_c_conftest_c89_main}+  ${ac_c_conftest_c99_main}+  return ok;+}+"++# Test code for whether the C compiler supports C89 (complete).+ac_c_conftest_c89_program="${ac_c_conftest_c89_globals}++int+main (int argc, char **argv)+{+  int ok = 0;+  ${ac_c_conftest_c89_main}+  return ok;+}+"++as_fn_append ac_header_c_list " stdio.h stdio_h HAVE_STDIO_H"+as_fn_append ac_header_c_list " stdlib.h stdlib_h HAVE_STDLIB_H"+as_fn_append ac_header_c_list " string.h string_h HAVE_STRING_H"+as_fn_append ac_header_c_list " inttypes.h inttypes_h HAVE_INTTYPES_H"+as_fn_append ac_header_c_list " stdint.h stdint_h HAVE_STDINT_H"+as_fn_append ac_header_c_list " strings.h strings_h HAVE_STRINGS_H"+as_fn_append ac_header_c_list " sys/stat.h sys_stat_h HAVE_SYS_STAT_H"+as_fn_append ac_header_c_list " sys/types.h sys_types_h HAVE_SYS_TYPES_H"+as_fn_append ac_header_c_list " unistd.h unistd_h HAVE_UNISTD_H"+# Check that the precious variables saved in the cache have kept the same+# value.+ac_cache_corrupted=false+for ac_var in $ac_precious_vars; do+  eval ac_old_set=\$ac_cv_env_${ac_var}_set+  eval ac_new_set=\$ac_env_${ac_var}_set+  eval ac_old_val=\$ac_cv_env_${ac_var}_value+  eval ac_new_val=\$ac_env_${ac_var}_value+  case $ac_old_set,$ac_new_set in+    set,)+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&5+printf "%s\n" "$as_me: error: \`$ac_var' was set to \`$ac_old_val' in the previous run" >&2;}+      ac_cache_corrupted=: ;;+    ,set)+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' was not set in the previous run" >&5+printf "%s\n" "$as_me: error: \`$ac_var' was not set in the previous run" >&2;}+      ac_cache_corrupted=: ;;+    ,);;+    *)+      if test "x$ac_old_val" != "x$ac_new_val"; then+	# differences in whitespace do not lead to failure.+	ac_old_val_w=`echo x $ac_old_val`+	ac_new_val_w=`echo x $ac_new_val`+	if test "$ac_old_val_w" != "$ac_new_val_w"; then+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: \`$ac_var' has changed since the previous run:" >&5+printf "%s\n" "$as_me: error: \`$ac_var' has changed since the previous run:" >&2;}+	  ac_cache_corrupted=:+	else+	  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&5+printf "%s\n" "$as_me: warning: ignoring whitespace changes in \`$ac_var' since the previous run:" >&2;}+	  eval $ac_var=\$ac_old_val+	fi+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   former value:  \`$ac_old_val'" >&5+printf "%s\n" "$as_me:   former value:  \`$ac_old_val'" >&2;}+	{ printf "%s\n" "$as_me:${as_lineno-$LINENO}:   current value: \`$ac_new_val'" >&5+printf "%s\n" "$as_me:   current value: \`$ac_new_val'" >&2;}+      fi;;+  esac+  # Pass precious variables to config.status.+  if test "$ac_new_set" = set; then+    case $ac_new_val in+    *\'*) ac_arg=$ac_var=`printf "%s\n" "$ac_new_val" | sed "s/'/'\\\\\\\\''/g"` ;;+    *) ac_arg=$ac_var=$ac_new_val ;;+    esac+    case " $ac_configure_args " in+      *" '$ac_arg' "*) ;; # Avoid dups.  Use of quotes ensures accuracy.+      *) as_fn_append ac_configure_args " '$ac_arg'" ;;+    esac+  fi+done+if $ac_cache_corrupted; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: changes in the environment can compromise the build" >&5+printf "%s\n" "$as_me: error: changes in the environment can compromise the build" >&2;}+  as_fn_error $? "run \`${MAKE-make} distclean' and/or \`rm $cache_file'+	    and start over" "$LINENO" 5+fi+## -------------------- ##+## Main body of script. ##+## -------------------- ##++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu++++# Safety check: Ensure that we are in the correct source directory.+++ac_config_headers="$ac_config_headers HsDirectoryConfig.h"+++# Autoconf chokes on spaces, but we may receive a path from Cabal containing+# spaces.  In that case, we just ignore Cabal's suggestion.+set_with_gcc() {+    case $withval in+        *" "*)+            { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: --with-gcc ignored due to presence of spaces" >&5+printf "%s\n" "$as_me: WARNING: --with-gcc ignored due to presence of spaces" >&2;};;+        *)+            CC=$withval+    esac+}++# Legacy support for setting the C compiler with Cabal<1.24+# Newer versions use Autoconf's native `CC=...` facility++# Check whether --with-gcc was given.+if test ${with_gcc+y}+then :+  withval=$with_gcc; set_with_gcc+fi++# avoid warnings when run via Cabal++# Check whether --with-compiler was given.+if test ${with_compiler+y}+then :+  withval=$with_compiler;+fi+++++++++++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu+if test -n "$ac_tool_prefix"; then+  # Extract the first word of "${ac_tool_prefix}gcc", so it can be a program name with args.+set dummy ${ac_tool_prefix}gcc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$CC"; then+  ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    ac_cv_prog_CC="${ac_tool_prefix}gcc"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++fi+if test -z "$ac_cv_prog_CC"; then+  ac_ct_CC=$CC+  # Extract the first word of "gcc", so it can be a program name with args.+set dummy gcc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$ac_ct_CC"; then+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    ac_cv_prog_ac_ct_CC="gcc"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++fi+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf "%s\n" "$ac_ct_CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi++  if test "x$ac_ct_CC" = x; then+    CC=""+  else+    case $cross_compiling:$ac_tool_warned in+yes:)+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+    CC=$ac_ct_CC+  fi+else+  CC="$ac_cv_prog_CC"+fi++if test -z "$CC"; then+          if test -n "$ac_tool_prefix"; then+    # Extract the first word of "${ac_tool_prefix}cc", so it can be a program name with args.+set dummy ${ac_tool_prefix}cc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$CC"; then+  ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    ac_cv_prog_CC="${ac_tool_prefix}cc"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++  fi+fi+if test -z "$CC"; then+  # Extract the first word of "cc", so it can be a program name with args.+set dummy cc; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$CC"; then+  ac_cv_prog_CC="$CC" # Let the user override the test.+else+  ac_prog_rejected=no+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    if test "$as_dir$ac_word$ac_exec_ext" = "/usr/ucb/cc"; then+       ac_prog_rejected=yes+       continue+     fi+    ac_cv_prog_CC="cc"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++if test $ac_prog_rejected = yes; then+  # We found a bogon in the path, so make sure we never use it.+  set dummy $ac_cv_prog_CC+  shift+  if test $# != 0; then+    # We chose a different compiler from the bogus one.+    # However, it has the same basename, so the bogon will be chosen+    # first if we set CC to just the basename; use the full file name.+    shift+    ac_cv_prog_CC="$as_dir$ac_word${1+' '}$@"+  fi+fi+fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++fi+if test -z "$CC"; then+  if test -n "$ac_tool_prefix"; then+  for ac_prog in cl.exe+  do+    # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.+set dummy $ac_tool_prefix$ac_prog; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$CC"; then+  ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    ac_cv_prog_CC="$ac_tool_prefix$ac_prog"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++    test -n "$CC" && break+  done+fi+if test -z "$CC"; then+  ac_ct_CC=$CC+  for ac_prog in cl.exe+do+  # Extract the first word of "$ac_prog", so it can be a program name with args.+set dummy $ac_prog; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$ac_ct_CC"; then+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    ac_cv_prog_ac_ct_CC="$ac_prog"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++fi+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf "%s\n" "$ac_ct_CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++  test -n "$ac_ct_CC" && break+done++  if test "x$ac_ct_CC" = x; then+    CC=""+  else+    case $cross_compiling:$ac_tool_warned in+yes:)+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+    CC=$ac_ct_CC+  fi+fi++fi+if test -z "$CC"; then+  if test -n "$ac_tool_prefix"; then+  # Extract the first word of "${ac_tool_prefix}clang", so it can be a program name with args.+set dummy ${ac_tool_prefix}clang; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$CC"; then+  ac_cv_prog_CC="$CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    ac_cv_prog_CC="${ac_tool_prefix}clang"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++fi+fi+CC=$ac_cv_prog_CC+if test -n "$CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $CC" >&5+printf "%s\n" "$CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi+++fi+if test -z "$ac_cv_prog_CC"; then+  ac_ct_CC=$CC+  # Extract the first word of "clang", so it can be a program name with args.+set dummy clang; ac_word=$2+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5+printf %s "checking for $ac_word... " >&6; }+if test ${ac_cv_prog_ac_ct_CC+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  if test -n "$ac_ct_CC"; then+  ac_cv_prog_ac_ct_CC="$ac_ct_CC" # Let the user override the test.+else+as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    for ac_exec_ext in '' $ac_executable_extensions; do+  if as_fn_executable_p "$as_dir$ac_word$ac_exec_ext"; then+    ac_cv_prog_ac_ct_CC="clang"+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: found $as_dir$ac_word$ac_exec_ext" >&5+    break 2+  fi+done+  done+IFS=$as_save_IFS++fi+fi+ac_ct_CC=$ac_cv_prog_ac_ct_CC+if test -n "$ac_ct_CC"; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_ct_CC" >&5+printf "%s\n" "$ac_ct_CC" >&6; }+else+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+fi++  if test "x$ac_ct_CC" = x; then+    CC=""+  else+    case $cross_compiling:$ac_tool_warned in+yes:)+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5+printf "%s\n" "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}+ac_tool_warned=yes ;;+esac+    CC=$ac_ct_CC+  fi+else+  CC="$ac_cv_prog_CC"+fi++fi+++test -z "$CC" && { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? "no acceptable C compiler found in \$PATH+See \`config.log' for more details" "$LINENO" 5; }++# Provide some information about the compiler.+printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler version" >&5+set X $ac_compile+ac_compiler=$2+for ac_option in --version -v -V -qversion -version; do+  { { ac_try="$ac_compiler $ac_option >&5"+case "(($ac_try" in+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+  *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf "%s\n" "$ac_try_echo"; } >&5+  (eval "$ac_compiler $ac_option >&5") 2>conftest.err+  ac_status=$?+  if test -s conftest.err; then+    sed '10a\+... rest of stderr output deleted ...+         10q' conftest.err >conftest.er1+    cat conftest.er1 >&5+  fi+  rm -f conftest.er1 conftest.err+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+  test $ac_status = 0; }+done++cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */++int+main (void)+{++  ;+  return 0;+}+_ACEOF+ac_clean_files_save=$ac_clean_files+ac_clean_files="$ac_clean_files a.out a.out.dSYM a.exe b.out"+# Try to create an executable without -o first, disregard a.out.+# It will help us diagnose broken compilers, and finding out an intuition+# of exeext.+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the C compiler works" >&5+printf %s "checking whether the C compiler works... " >&6; }+ac_link_default=`printf "%s\n" "$ac_link" | sed 's/ -o *conftest[^ ]*//'`++# The possible output files:+ac_files="a.out conftest.exe conftest a.exe a_out.exe b.out conftest.*"++ac_rmfiles=+for ac_file in $ac_files+do+  case $ac_file in+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;+    * ) ac_rmfiles="$ac_rmfiles $ac_file";;+  esac+done+rm -f $ac_rmfiles++if { { ac_try="$ac_link_default"+case "(($ac_try" in+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+  *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf "%s\n" "$ac_try_echo"; } >&5+  (eval "$ac_link_default") 2>&5+  ac_status=$?+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+  test $ac_status = 0; }+then :+  # Autoconf-2.13 could set the ac_cv_exeext variable to `no'.+# So ignore a value of `no', otherwise this would lead to `EXEEXT = no'+# in a Makefile.  We should not override ac_cv_exeext if it was cached,+# so that the user can short-circuit this test for compilers unknown to+# Autoconf.+for ac_file in $ac_files ''+do+  test -f "$ac_file" || continue+  case $ac_file in+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj )+	;;+    [ab].out )+	# We found the default executable, but exeext='' is most+	# certainly right.+	break;;+    *.* )+	if test ${ac_cv_exeext+y} && test "$ac_cv_exeext" != no;+	then :; else+	   ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`+	fi+	# We set ac_cv_exeext here because the later test for it is not+	# safe: cross compilers may not add the suffix if given an `-o'+	# argument, so we may need to know it at that point already.+	# Even if this section looks crufty: it has the advantage of+	# actually working.+	break;;+    * )+	break;;+  esac+done+test "$ac_cv_exeext" = no && ac_cv_exeext=++else $as_nop+  ac_file=''+fi+if test -z "$ac_file"+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: no" >&5+printf "%s\n" "no" >&6; }+printf "%s\n" "$as_me: failed program was:" >&5+sed 's/^/| /' conftest.$ac_ext >&5++{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error 77 "C compiler cannot create executables+See \`config.log' for more details" "$LINENO" 5; }+else $as_nop+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: yes" >&5+printf "%s\n" "yes" >&6; }+fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for C compiler default output file name" >&5+printf %s "checking for C compiler default output file name... " >&6; }+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_file" >&5+printf "%s\n" "$ac_file" >&6; }+ac_exeext=$ac_cv_exeext++rm -f -r a.out a.out.dSYM a.exe conftest$ac_cv_exeext b.out+ac_clean_files=$ac_clean_files_save+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of executables" >&5+printf %s "checking for suffix of executables... " >&6; }+if { { ac_try="$ac_link"+case "(($ac_try" in+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+  *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf "%s\n" "$ac_try_echo"; } >&5+  (eval "$ac_link") 2>&5+  ac_status=$?+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+  test $ac_status = 0; }+then :+  # If both `conftest.exe' and `conftest' are `present' (well, observable)+# catch `conftest.exe'.  For instance with Cygwin, `ls conftest' will+# work properly (i.e., refer to `conftest.exe'), while it won't with+# `rm'.+for ac_file in conftest.exe conftest conftest.*; do+  test -f "$ac_file" || continue+  case $ac_file in+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM | *.o | *.obj ) ;;+    *.* ) ac_cv_exeext=`expr "$ac_file" : '[^.]*\(\..*\)'`+	  break;;+    * ) break;;+  esac+done+else $as_nop+  { { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? "cannot compute suffix of executables: cannot compile and link+See \`config.log' for more details" "$LINENO" 5; }+fi+rm -f conftest conftest$ac_cv_exeext+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_exeext" >&5+printf "%s\n" "$ac_cv_exeext" >&6; }++rm -f conftest.$ac_ext+EXEEXT=$ac_cv_exeext+ac_exeext=$EXEEXT+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */+#include <stdio.h>+int+main (void)+{+FILE *f = fopen ("conftest.out", "w");+ return ferror (f) || fclose (f) != 0;++  ;+  return 0;+}+_ACEOF+ac_clean_files="$ac_clean_files conftest.out"+# Check that the compiler produces executables we can run.  If not, either+# the compiler is broken, or we cross compile.+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether we are cross compiling" >&5+printf %s "checking whether we are cross compiling... " >&6; }+if test "$cross_compiling" != yes; then+  { { ac_try="$ac_link"+case "(($ac_try" in+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+  *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf "%s\n" "$ac_try_echo"; } >&5+  (eval "$ac_link") 2>&5+  ac_status=$?+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+  test $ac_status = 0; }+  if { ac_try='./conftest$ac_cv_exeext'+  { { case "(($ac_try" in+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+  *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf "%s\n" "$ac_try_echo"; } >&5+  (eval "$ac_try") 2>&5+  ac_status=$?+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+  test $ac_status = 0; }; }; then+    cross_compiling=no+  else+    if test "$cross_compiling" = maybe; then+	cross_compiling=yes+    else+	{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error 77 "cannot run C compiled programs.+If you meant to cross compile, use \`--host'.+See \`config.log' for more details" "$LINENO" 5; }+    fi+  fi+fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $cross_compiling" >&5+printf "%s\n" "$cross_compiling" >&6; }++rm -f conftest.$ac_ext conftest$ac_cv_exeext conftest.out+ac_clean_files=$ac_clean_files_save+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for suffix of object files" >&5+printf %s "checking for suffix of object files... " >&6; }+if test ${ac_cv_objext+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */++int+main (void)+{++  ;+  return 0;+}+_ACEOF+rm -f conftest.o conftest.obj+if { { ac_try="$ac_compile"+case "(($ac_try" in+  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;+  *) ac_try_echo=$ac_try;;+esac+eval ac_try_echo="\"\$as_me:${as_lineno-$LINENO}: $ac_try_echo\""+printf "%s\n" "$ac_try_echo"; } >&5+  (eval "$ac_compile") 2>&5+  ac_status=$?+  printf "%s\n" "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5+  test $ac_status = 0; }+then :+  for ac_file in conftest.o conftest.obj conftest.*; do+  test -f "$ac_file" || continue;+  case $ac_file in+    *.$ac_ext | *.xcoff | *.tds | *.d | *.pdb | *.xSYM | *.bb | *.bbg | *.map | *.inf | *.dSYM ) ;;+    *) ac_cv_objext=`expr "$ac_file" : '.*\.\(.*\)'`+       break;;+  esac+done+else $as_nop+  printf "%s\n" "$as_me: failed program was:" >&5+sed 's/^/| /' conftest.$ac_ext >&5++{ { printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5+printf "%s\n" "$as_me: error: in \`$ac_pwd':" >&2;}+as_fn_error $? "cannot compute suffix of object files: cannot compile+See \`config.log' for more details" "$LINENO" 5; }+fi+rm -f conftest.$ac_cv_objext conftest.$ac_ext+fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_objext" >&5+printf "%s\n" "$ac_cv_objext" >&6; }+OBJEXT=$ac_cv_objext+ac_objext=$OBJEXT+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether the compiler supports GNU C" >&5+printf %s "checking whether the compiler supports GNU C... " >&6; }+if test ${ac_cv_c_compiler_gnu+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */++int+main (void)+{+#ifndef __GNUC__+       choke me+#endif++  ;+  return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+  ac_compiler_gnu=yes+else $as_nop+  ac_compiler_gnu=no+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+ac_cv_c_compiler_gnu=$ac_compiler_gnu++fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_c_compiler_gnu" >&5+printf "%s\n" "$ac_cv_c_compiler_gnu" >&6; }+ac_compiler_gnu=$ac_cv_c_compiler_gnu++if test $ac_compiler_gnu = yes; then+  GCC=yes+else+  GCC=+fi+ac_test_CFLAGS=${CFLAGS+y}+ac_save_CFLAGS=$CFLAGS+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking whether $CC accepts -g" >&5+printf %s "checking whether $CC accepts -g... " >&6; }+if test ${ac_cv_prog_cc_g+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  ac_save_c_werror_flag=$ac_c_werror_flag+   ac_c_werror_flag=yes+   ac_cv_prog_cc_g=no+   CFLAGS="-g"+   cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */++int+main (void)+{++  ;+  return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+  ac_cv_prog_cc_g=yes+else $as_nop+  CFLAGS=""+      cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */++int+main (void)+{++  ;+  return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :++else $as_nop+  ac_c_werror_flag=$ac_save_c_werror_flag+	 CFLAGS="-g"+	 cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */++int+main (void)+{++  ;+  return 0;+}+_ACEOF+if ac_fn_c_try_compile "$LINENO"+then :+  ac_cv_prog_cc_g=yes+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam conftest.$ac_ext+   ac_c_werror_flag=$ac_save_c_werror_flag+fi+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_g" >&5+printf "%s\n" "$ac_cv_prog_cc_g" >&6; }+if test $ac_test_CFLAGS; then+  CFLAGS=$ac_save_CFLAGS+elif test $ac_cv_prog_cc_g = yes; then+  if test "$GCC" = yes; then+    CFLAGS="-g -O2"+  else+    CFLAGS="-g"+  fi+else+  if test "$GCC" = yes; then+    CFLAGS="-O2"+  else+    CFLAGS=+  fi+fi+ac_prog_cc_stdc=no+if test x$ac_prog_cc_stdc = xno+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C11 features" >&5+printf %s "checking for $CC option to enable C11 features... " >&6; }+if test ${ac_cv_prog_cc_c11+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  ac_cv_prog_cc_c11=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */+$ac_c_conftest_c11_program+_ACEOF+for ac_arg in '' -std=gnu11+do+  CC="$ac_save_CC $ac_arg"+  if ac_fn_c_try_compile "$LINENO"+then :+  ac_cv_prog_cc_c11=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+  test "x$ac_cv_prog_cc_c11" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC+fi++if test "x$ac_cv_prog_cc_c11" = xno+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf "%s\n" "unsupported" >&6; }+else $as_nop+  if test "x$ac_cv_prog_cc_c11" = x+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf "%s\n" "none needed" >&6; }+else $as_nop+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c11" >&5+printf "%s\n" "$ac_cv_prog_cc_c11" >&6; }+     CC="$CC $ac_cv_prog_cc_c11"+fi+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c11+  ac_prog_cc_stdc=c11+fi+fi+if test x$ac_prog_cc_stdc = xno+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C99 features" >&5+printf %s "checking for $CC option to enable C99 features... " >&6; }+if test ${ac_cv_prog_cc_c99+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  ac_cv_prog_cc_c99=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */+$ac_c_conftest_c99_program+_ACEOF+for ac_arg in '' -std=gnu99 -std=c99 -c99 -qlanglvl=extc1x -qlanglvl=extc99 -AC99 -D_STDC_C99=+do+  CC="$ac_save_CC $ac_arg"+  if ac_fn_c_try_compile "$LINENO"+then :+  ac_cv_prog_cc_c99=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+  test "x$ac_cv_prog_cc_c99" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC+fi++if test "x$ac_cv_prog_cc_c99" = xno+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf "%s\n" "unsupported" >&6; }+else $as_nop+  if test "x$ac_cv_prog_cc_c99" = x+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf "%s\n" "none needed" >&6; }+else $as_nop+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c99" >&5+printf "%s\n" "$ac_cv_prog_cc_c99" >&6; }+     CC="$CC $ac_cv_prog_cc_c99"+fi+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c99+  ac_prog_cc_stdc=c99+fi+fi+if test x$ac_prog_cc_stdc = xno+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: checking for $CC option to enable C89 features" >&5+printf %s "checking for $CC option to enable C89 features... " >&6; }+if test ${ac_cv_prog_cc_c89+y}+then :+  printf %s "(cached) " >&6+else $as_nop+  ac_cv_prog_cc_c89=no+ac_save_CC=$CC+cat confdefs.h - <<_ACEOF >conftest.$ac_ext+/* end confdefs.h.  */+$ac_c_conftest_c89_program+_ACEOF+for ac_arg in '' -qlanglvl=extc89 -qlanglvl=ansi -std -Ae "-Aa -D_HPUX_SOURCE" "-Xc -D__EXTENSIONS__"+do+  CC="$ac_save_CC $ac_arg"+  if ac_fn_c_try_compile "$LINENO"+then :+  ac_cv_prog_cc_c89=$ac_arg+fi+rm -f core conftest.err conftest.$ac_objext conftest.beam+  test "x$ac_cv_prog_cc_c89" != "xno" && break+done+rm -f conftest.$ac_ext+CC=$ac_save_CC+fi++if test "x$ac_cv_prog_cc_c89" = xno+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: unsupported" >&5+printf "%s\n" "unsupported" >&6; }+else $as_nop+  if test "x$ac_cv_prog_cc_c89" = x+then :+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: none needed" >&5+printf "%s\n" "none needed" >&6; }+else $as_nop+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: result: $ac_cv_prog_cc_c89" >&5+printf "%s\n" "$ac_cv_prog_cc_c89" >&6; }+     CC="$CC $ac_cv_prog_cc_c89"+fi+  ac_cv_prog_cc_stdc=$ac_cv_prog_cc_c89+  ac_prog_cc_stdc=c89+fi+fi++ac_ext=c+ac_cpp='$CPP $CPPFLAGS'+ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'+ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'+ac_compiler_gnu=$ac_cv_c_compiler_gnu+++# check for specific header (.h) files that we are interested in++ac_header= ac_cache=+for ac_item in $ac_header_c_list+do+  if test $ac_cache; then+    ac_fn_c_check_header_compile "$LINENO" $ac_header ac_cv_header_$ac_cache "$ac_includes_default"+    if eval test \"x\$ac_cv_header_$ac_cache\" = xyes; then+      printf "%s\n" "#define $ac_item 1" >> confdefs.h+    fi+    ac_header= ac_cache=+  elif test $ac_header; then+    ac_cache=$ac_item+  else+    ac_header=$ac_item+  fi+done+++++++++if test $ac_cv_header_stdlib_h = yes && test $ac_cv_header_string_h = yes+then :++printf "%s\n" "#define STDC_HEADERS 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "fcntl.h" "ac_cv_header_fcntl_h" "$ac_includes_default"+if test "x$ac_cv_header_fcntl_h" = xyes+then :+  printf "%s\n" "#define HAVE_FCNTL_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "limits.h" "ac_cv_header_limits_h" "$ac_includes_default"+if test "x$ac_cv_header_limits_h" = xyes+then :+  printf "%s\n" "#define HAVE_LIMITS_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "sys/types.h" "ac_cv_header_sys_types_h" "$ac_includes_default"+if test "x$ac_cv_header_sys_types_h" = xyes+then :+  printf "%s\n" "#define HAVE_SYS_TYPES_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "sys/stat.h" "ac_cv_header_sys_stat_h" "$ac_includes_default"+if test "x$ac_cv_header_sys_stat_h" = xyes+then :+  printf "%s\n" "#define HAVE_SYS_STAT_H 1" >>confdefs.h++fi+ac_fn_c_check_header_compile "$LINENO" "time.h" "ac_cv_header_time_h" "$ac_includes_default"+if test "x$ac_cv_header_time_h" = xyes+then :+  printf "%s\n" "#define HAVE_TIME_H 1" >>confdefs.h++fi+++ac_fn_c_check_func "$LINENO" "realpath" "ac_cv_func_realpath"+if test "x$ac_cv_func_realpath" = xyes+then :+  printf "%s\n" "#define HAVE_REALPATH 1" >>confdefs.h++fi++ac_fn_c_check_func "$LINENO" "utimensat" "ac_cv_func_utimensat"+if test "x$ac_cv_func_utimensat" = xyes+then :+  printf "%s\n" "#define HAVE_UTIMENSAT 1" >>confdefs.h++fi++ac_fn_c_check_func "$LINENO" "CreateSymbolicLinkW" "ac_cv_func_CreateSymbolicLinkW"+if test "x$ac_cv_func_CreateSymbolicLinkW" = xyes+then :+  printf "%s\n" "#define HAVE_CREATESYMBOLICLINKW 1" >>confdefs.h++fi++ac_fn_c_check_func "$LINENO" "GetFinalPathNameByHandleW" "ac_cv_func_GetFinalPathNameByHandleW"+if test "x$ac_cv_func_GetFinalPathNameByHandleW" = xyes+then :+  printf "%s\n" "#define HAVE_GETFINALPATHNAMEBYHANDLEW 1" >>confdefs.h++fi+++# EXTEXT is defined automatically by AC_PROG_CC;+# we just need to capture it in the header file++printf "%s\n" "#define EXE_EXTENSION \"$EXEEXT\"" >>confdefs.h+++cat >confcache <<\_ACEOF+# This file is a shell script that caches the results of configure+# tests run on this system so they can be shared between configure+# scripts and configure runs, see configure's option --config-cache.+# It is not useful on other systems.  If it contains results you don't+# want to keep, you may remove or edit it.+#+# config.status only pays attention to the cache file if you give it+# the --recheck option to rerun configure.+#+# `ac_cv_env_foo' variables (set or unset) will be overridden when+# loading this file, other *unset* `ac_cv_foo' will be assigned the+# following values.++_ACEOF++# The following way of writing the cache mishandles newlines in values,+# but we know of no workaround that is simple, portable, and efficient.+# So, we kill variables containing newlines.+# Ultrix sh set writes to stderr and can't be redirected directly,+# and sets the high bit in the cache file unless we assign to the vars.+(+  for ac_var in `(set) 2>&1 | sed -n 's/^\([a-zA-Z_][a-zA-Z0-9_]*\)=.*/\1/p'`; do+    eval ac_val=\$$ac_var+    case $ac_val in #(+    *${as_nl}*)+      case $ac_var in #(+      *_cv_*) { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: cache variable $ac_var contains a newline" >&5+printf "%s\n" "$as_me: WARNING: cache variable $ac_var contains a newline" >&2;} ;;+      esac+      case $ac_var in #(+      _ | IFS | as_nl) ;; #(+      BASH_ARGV | BASH_SOURCE) eval $ac_var= ;; #(+      *) { eval $ac_var=; unset $ac_var;} ;;+      esac ;;+    esac+  done++  (set) 2>&1 |+    case $as_nl`(ac_space=' '; set) 2>&1` in #(+    *${as_nl}ac_space=\ *)+      # `set' does not quote correctly, so add quotes: double-quote+      # substitution turns \\\\ into \\, and sed turns \\ into \.+      sed -n \+	"s/'/'\\\\''/g;+	  s/^\\([_$as_cr_alnum]*_cv_[_$as_cr_alnum]*\\)=\\(.*\\)/\\1='\\2'/p"+      ;; #(+    *)+      # `set' quotes correctly as required by POSIX, so do not add quotes.+      sed -n "/^[_$as_cr_alnum]*_cv_[_$as_cr_alnum]*=/p"+      ;;+    esac |+    sort+) |+  sed '+     /^ac_cv_env_/b end+     t clear+     :clear+     s/^\([^=]*\)=\(.*[{}].*\)$/test ${\1+y} || &/+     t end+     s/^\([^=]*\)=\(.*\)$/\1=${\1=\2}/+     :end' >>confcache+if diff "$cache_file" confcache >/dev/null 2>&1; then :; else+  if test -w "$cache_file"; then+    if test "x$cache_file" != "x/dev/null"; then+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: updating cache $cache_file" >&5+printf "%s\n" "$as_me: updating cache $cache_file" >&6;}+      if test ! -f "$cache_file" || test -h "$cache_file"; then+	cat confcache >"$cache_file"+      else+        case $cache_file in #(+        */* | ?:*)+	  mv -f confcache "$cache_file"$$ &&+	  mv -f "$cache_file"$$ "$cache_file" ;; #(+        *)+	  mv -f confcache "$cache_file" ;;+	esac+      fi+    fi+  else+    { printf "%s\n" "$as_me:${as_lineno-$LINENO}: not updating unwritable cache $cache_file" >&5+printf "%s\n" "$as_me: not updating unwritable cache $cache_file" >&6;}+  fi+fi+rm -f confcache++test "x$prefix" = xNONE && prefix=$ac_default_prefix+# Let make expand exec_prefix.+test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'++DEFS=-DHAVE_CONFIG_H++ac_libobjs=+ac_ltlibobjs=+U=+for ac_i in : $LIBOBJS; do test "x$ac_i" = x: && continue+  # 1. 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When used with automake>=1.10 LIBOBJDIR+  #    will be set to the directory where LIBOBJS objects are built.+  as_fn_append ac_libobjs " \${LIBOBJDIR}$ac_i\$U.$ac_objext"+  as_fn_append ac_ltlibobjs " \${LIBOBJDIR}$ac_i"'$U.lo'+done+LIBOBJS=$ac_libobjs++LTLIBOBJS=$ac_ltlibobjs++++: "${CONFIG_STATUS=./config.status}"+ac_write_fail=0+ac_clean_files_save=$ac_clean_files+ac_clean_files="$ac_clean_files $CONFIG_STATUS"+{ printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $CONFIG_STATUS" >&5+printf "%s\n" "$as_me: creating $CONFIG_STATUS" >&6;}+as_write_fail=0+cat >$CONFIG_STATUS <<_ASEOF || as_write_fail=1+#! $SHELL+# Generated by $as_me.+# Run this file to recreate the current configuration.+# Compiler output produced by configure, useful for debugging+# configure, is in config.log if it exists.++debug=false+ac_cs_recheck=false+ac_cs_silent=false++SHELL=\${CONFIG_SHELL-$SHELL}+export SHELL+_ASEOF+cat >>$CONFIG_STATUS <<\_ASEOF || as_write_fail=1+## -------------------- ##+## M4sh Initialization. ##+## -------------------- ##++# Be more Bourne compatible+DUALCASE=1; export DUALCASE # for MKS sh+as_nop=:+if test ${ZSH_VERSION+y} && (emulate sh) >/dev/null 2>&1+then :+  emulate sh+  NULLCMD=:+  # Pre-4.2 versions of Zsh do word splitting on ${1+"$@"}, which+  # is contrary to our usage.  Disable this feature.+  alias -g '${1+"$@"}'='"$@"'+  setopt NO_GLOB_SUBST+else $as_nop+  case `(set -o) 2>/dev/null` in #(+  *posix*) :+    set -o posix ;; #(+  *) :+     ;;+esac+fi++++# Reset variables that may have inherited troublesome values from+# the environment.++# IFS needs to be set, to space, tab, and newline, in precisely that order.+# (If _AS_PATH_WALK were called with IFS unset, it would have the+# side effect of setting IFS to empty, thus disabling word splitting.)+# Quoting is to prevent editors from complaining about space-tab.+as_nl='+'+export as_nl+IFS=" ""	$as_nl"++PS1='$ '+PS2='> '+PS4='+ '++# Ensure predictable behavior from utilities with locale-dependent output.+LC_ALL=C+export LC_ALL+LANGUAGE=C+export LANGUAGE++# We cannot yet rely on "unset" to work, but we need these variables+# to be unset--not just set to an empty or harmless value--now, to+# avoid bugs in old shells (e.g. pre-3.0 UWIN ksh).  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Look in the path if we contain no directory separator.+as_myself=+case $0 in #((+  *[\\/]* ) as_myself=$0 ;;+  *) as_save_IFS=$IFS; IFS=$PATH_SEPARATOR+for as_dir in $PATH+do+  IFS=$as_save_IFS+  case $as_dir in #(((+    '') as_dir=./ ;;+    */) ;;+    *) as_dir=$as_dir/ ;;+  esac+    test -r "$as_dir$0" && as_myself=$as_dir$0 && break+  done+IFS=$as_save_IFS++     ;;+esac+# We did not find ourselves, most probably we were run as `sh COMMAND'+# in which case we are not to be found in the path.+if test "x$as_myself" = x; then+  as_myself=$0+fi+if test ! -f "$as_myself"; then+  printf "%s\n" "$as_myself: error: cannot find myself; rerun with an absolute file name" >&2+  exit 1+fi++++# as_fn_error STATUS ERROR [LINENO LOG_FD]+# ----------------------------------------+# Output "`basename $0`: error: ERROR" to stderr. If LINENO and LOG_FD are+# provided, also output the error to LOG_FD, referencing LINENO. Then exit the+# script with STATUS, using 1 if that was 0.+as_fn_error ()+{+  as_status=$1; test $as_status -eq 0 && as_status=1+  if test "$4"; then+    as_lineno=${as_lineno-"$3"} as_lineno_stack=as_lineno_stack=$as_lineno_stack+    printf "%s\n" "$as_me:${as_lineno-$LINENO}: error: $2" >&$4+  fi+  printf "%s\n" "$as_me: error: $2" >&2+  as_fn_exit $as_status+} # as_fn_error++++# as_fn_set_status STATUS+# -----------------------+# Set $? to STATUS, without forking.+as_fn_set_status ()+{+  return $1+} # as_fn_set_status++# as_fn_exit STATUS+# -----------------+# Exit the shell with STATUS, even in a "trap 0" or "set -e" context.+as_fn_exit ()+{+  set +e+  as_fn_set_status $1+  exit $1+} # as_fn_exit++# as_fn_unset VAR+# ---------------+# Portably unset VAR.+as_fn_unset ()+{+  { eval $1=; unset $1;}+}+as_unset=as_fn_unset++# as_fn_append VAR VALUE+# ----------------------+# Append the text in VALUE to the end of the definition contained in VAR. 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The arguments+# must be portable across $(()) and expr.+if (eval "test \$(( 1 + 1 )) = 2") 2>/dev/null+then :+  eval 'as_fn_arith ()+  {+    as_val=$(( $* ))+  }'+else $as_nop+  as_fn_arith ()+  {+    as_val=`expr "$@" || test $? -eq 1`+  }+fi # as_fn_arith+++if expr a : '\(a\)' >/dev/null 2>&1 &&+   test "X`expr 00001 : '.*\(...\)'`" = X001; then+  as_expr=expr+else+  as_expr=false+fi++if (basename -- /) >/dev/null 2>&1 && test "X`basename -- / 2>&1`" = "X/"; then+  as_basename=basename+else+  as_basename=false+fi++if (as_dir=`dirname -- /` && test "X$as_dir" = X/) >/dev/null 2>&1; then+  as_dirname=dirname+else+  as_dirname=false+fi++as_me=`$as_basename -- "$0" ||+$as_expr X/"$0" : '.*/\([^/][^/]*\)/*$' \| \+	 X"$0" : 'X\(//\)$' \| \+	 X"$0" : 'X\(/\)' \| . 2>/dev/null ||+printf "%s\n" X/"$0" |+    sed '/^.*\/\([^/][^/]*\)\/*$/{+	    s//\1/+	    q+	  }+	  /^X\/\(\/\/\)$/{+	    s//\1/+	    q+	  }+	  /^X\/\(\/\).*/{+	    s//\1/+	    q+	  }+	  s/.*/./; q'`++# Avoid depending upon Character Ranges.+as_cr_letters='abcdefghijklmnopqrstuvwxyz'+as_cr_LETTERS='ABCDEFGHIJKLMNOPQRSTUVWXYZ'+as_cr_Letters=$as_cr_letters$as_cr_LETTERS+as_cr_digits='0123456789'+as_cr_alnum=$as_cr_Letters$as_cr_digits+++# Determine whether it's possible to make 'echo' print without a newline.+# These variables are no longer used directly by Autoconf, but are AC_SUBSTed+# for compatibility with existing Makefiles.+ECHO_C= ECHO_N= ECHO_T=+case `echo -n x` in #(((((+-n*)+  case `echo 'xy\c'` in+  *c*) ECHO_T='	';;	# ECHO_T is single tab character.+  xy)  ECHO_C='\c';;+  *)   echo `echo ksh88 bug on AIX 6.1` > /dev/null+       ECHO_T='	';;+  esac;;+*)+  ECHO_N='-n';;+esac++# For backward compatibility with old third-party macros, we provide+# the shell variables $as_echo and $as_echo_n.  New code should use+# AS_ECHO(["message"]) and AS_ECHO_N(["message"]), respectively.+as_echo='printf %s\n'+as_echo_n='printf %s'++rm -f conf$$ conf$$.exe conf$$.file+if test -d conf$$.dir; then+  rm -f conf$$.dir/conf$$.file+else+  rm -f conf$$.dir+  mkdir conf$$.dir 2>/dev/null+fi+if (echo >conf$$.file) 2>/dev/null; then+  if ln -s conf$$.file conf$$ 2>/dev/null; then+    as_ln_s='ln -s'+    # ... but there are two gotchas:+    # 1) On MSYS, both `ln -s file dir' and `ln file dir' fail.+    # 2) DJGPP < 2.04 has no symlinks; `ln -s' creates a wrapper executable.+    # In both cases, we have to default to `cp -pR'.+    ln -s conf$$.file conf$$.dir 2>/dev/null && test ! -f conf$$.exe ||+      as_ln_s='cp -pR'+  elif ln conf$$.file conf$$ 2>/dev/null; then+    as_ln_s=ln+  else+    as_ln_s='cp -pR'+  fi+else+  as_ln_s='cp -pR'+fi+rm -f conf$$ conf$$.exe conf$$.dir/conf$$.file conf$$.file+rmdir conf$$.dir 2>/dev/null+++# as_fn_mkdir_p+# -------------+# Create "$as_dir" as a directory, including parents if necessary.+as_fn_mkdir_p ()+{++  case $as_dir in #(+  -*) as_dir=./$as_dir;;+  esac+  test -d "$as_dir" || eval $as_mkdir_p || {+    as_dirs=+    while :; do+      case $as_dir in #(+      *\'*) as_qdir=`printf "%s\n" "$as_dir" | sed "s/'/'\\\\\\\\''/g"`;; #'(+      *) as_qdir=$as_dir;;+      esac+      as_dirs="'$as_qdir' $as_dirs"+      as_dir=`$as_dirname -- "$as_dir" ||+$as_expr X"$as_dir" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \+	 X"$as_dir" : 'X\(//\)[^/]' \| \+	 X"$as_dir" : 'X\(//\)$' \| \+	 X"$as_dir" : 'X\(/\)' \| . 2>/dev/null ||+printf "%s\n" X"$as_dir" |+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{+	    s//\1/+	    q+	  }+	  /^X\(\/\/\)[^/].*/{+	    s//\1/+	    q+	  }+	  /^X\(\/\/\)$/{+	    s//\1/+	    q+	  }+	  /^X\(\/\).*/{+	    s//\1/+	    q+	  }+	  s/.*/./; q'`+      test -d "$as_dir" && break+    done+    test -z "$as_dirs" || eval "mkdir $as_dirs"+  } || test -d "$as_dir" || as_fn_error $? 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"ambiguous option: \`$1'+Try \`$0 --help' for more information.";;+  --help | --hel | -h )+    printf "%s\n" "$ac_cs_usage"; exit ;;+  -q | -quiet | --quiet | --quie | --qui | --qu | --q \+  | -silent | --silent | --silen | --sile | --sil | --si | --s)+    ac_cs_silent=: ;;++  # This is an error.+  -*) as_fn_error $? "unrecognized option: \`$1'+Try \`$0 --help' for more information." ;;++  *) as_fn_append ac_config_targets " $1"+     ac_need_defaults=false ;;++  esac+  shift+done++ac_configure_extra_args=++if $ac_cs_silent; then+  exec 6>/dev/null+  ac_configure_extra_args="$ac_configure_extra_args --silent"+fi++_ACEOF+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1+if \$ac_cs_recheck; then+  set X $SHELL '$0' $ac_configure_args \$ac_configure_extra_args --no-create --no-recursion+  shift+  \printf "%s\n" "running CONFIG_SHELL=$SHELL \$*" >&6+  CONFIG_SHELL='$SHELL'+  export CONFIG_SHELL+  exec "\$@"+fi++_ACEOF+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1+exec 5>>config.log+{+  echo+  sed 'h;s/./-/g;s/^.../## /;s/...$/ ##/;p;x;p;x' <<_ASBOX+## Running $as_me. ##+_ASBOX+  printf "%s\n" "$ac_log"+} >&5++_ACEOF+cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1+_ACEOF++cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1++# Handling of arguments.+for ac_config_target in $ac_config_targets+do+  case $ac_config_target in+    "HsDirectoryConfig.h") CONFIG_HEADERS="$CONFIG_HEADERS HsDirectoryConfig.h" ;;++  *) as_fn_error $? "invalid argument: \`$ac_config_target'" "$LINENO" 5;;+  esac+done+++# If the user did not use the arguments to specify the items to instantiate,+# then the envvar interface is used.  Set only those that are not.+# We use the long form for the default assignment because of an extremely+# bizarre bug on SunOS 4.1.3.+if $ac_need_defaults; then+  test ${CONFIG_HEADERS+y} || CONFIG_HEADERS=$config_headers+fi++# Have a temporary directory for convenience.  Make it in the build tree+# simply because there is no reason against having it here, and in addition,+# creating and moving files from /tmp can sometimes cause problems.+# Hook for its removal unless debugging.+# Note that there is a small window in which the directory will not be cleaned:+# after its creation but before its name has been assigned to `$tmp'.+$debug ||+{+  tmp= ac_tmp=+  trap 'exit_status=$?+  : "${ac_tmp:=$tmp}"+  { test ! -d "$ac_tmp" || rm -fr "$ac_tmp"; } && exit $exit_status+' 0+  trap 'as_fn_exit 1' 1 2 13 15+}+# Create a (secure) tmp directory for tmp files.++{+  tmp=`(umask 077 && mktemp -d "./confXXXXXX") 2>/dev/null` &&+  test -d "$tmp"+}  ||+{+  tmp=./conf$$-$RANDOM+  (umask 077 && mkdir "$tmp")+} || as_fn_error $? "cannot create a temporary directory in ." "$LINENO" 5+ac_tmp=$tmp++# Set up the scripts for CONFIG_HEADERS section.+# No need to generate them if there are no CONFIG_HEADERS.+# This happens for instance with `./config.status Makefile'.+if test -n "$CONFIG_HEADERS"; then+cat >"$ac_tmp/defines.awk" <<\_ACAWK ||+BEGIN {+_ACEOF++# Transform confdefs.h into an awk script `defines.awk', embedded as+# here-document in config.status, that substitutes the proper values into+# config.h.in to produce config.h.++# Create a delimiter string that does not exist in confdefs.h, to ease+# handling of long lines.+ac_delim='%!_!# '+for ac_last_try in false false :; do+  ac_tt=`sed -n "/$ac_delim/p" confdefs.h`+  if test -z "$ac_tt"; then+    break+  elif $ac_last_try; then+    as_fn_error $? "could not make $CONFIG_HEADERS" "$LINENO" 5+  else+    ac_delim="$ac_delim!$ac_delim _$ac_delim!! "+  fi+done++# For the awk script, D is an array of macro values keyed by name,+# likewise P contains macro parameters if any.  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This is necessary, for example,+    # in the case of _POSIX_SOURCE, which is predefined and required+    # on some systems where configure will not decide to define it.+    if (defundef == "undef") {+      print "/*", prefix defundef, macro, "*/"+      next+    }+  }+}+{ print }+_ACAWK+_ACEOF+cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1+  as_fn_error $? "could not setup config headers machinery" "$LINENO" 5+fi # test -n "$CONFIG_HEADERS"+++eval set X "    :H $CONFIG_HEADERS    "+shift+for ac_tag+do+  case $ac_tag in+  :[FHLC]) ac_mode=$ac_tag; continue;;+  esac+  case $ac_mode$ac_tag in+  :[FHL]*:*);;+  :L* | :C*:*) as_fn_error $? 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The absolute path cannot be DOS-style,+	 # because $ac_f cannot contain `:'.+	 test -f "$ac_f" ||+	   case $ac_f in+	   [\\/$]*) false;;+	   *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;+	   esac ||+	   as_fn_error 1 "cannot find input file: \`$ac_f'" "$LINENO" 5;;+      esac+      case $ac_f in *\'*) ac_f=`printf "%s\n" "$ac_f" | sed "s/'/'\\\\\\\\''/g"`;; esac+      as_fn_append ac_file_inputs " '$ac_f'"+    done++    # Let's still pretend it is `configure' which instantiates (i.e., don't+    # use $as_me), people would be surprised to read:+    #    /* config.h.  Generated by config.status.  */+    configure_input='Generated from '`+	  printf "%s\n" "$*" | sed 's|^[^:]*/||;s|:[^:]*/|, |g'+	`' by configure.'+    if test x"$ac_file" != x-; then+      configure_input="$ac_file.  $configure_input"+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: creating $ac_file" >&5+printf "%s\n" "$as_me: creating $ac_file" >&6;}+    fi+    # Neutralize special characters interpreted by sed in replacement strings.+    case $configure_input in #(+    *\&* | *\|* | *\\* )+       ac_sed_conf_input=`printf "%s\n" "$configure_input" |+       sed 's/[\\\\&|]/\\\\&/g'`;; #(+    *) ac_sed_conf_input=$configure_input;;+    esac++    case $ac_tag in+    *:-:* | *:-) cat >"$ac_tmp/stdin" \+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5 ;;+    esac+    ;;+  esac++  ac_dir=`$as_dirname -- "$ac_file" ||+$as_expr X"$ac_file" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \+	 X"$ac_file" : 'X\(//\)[^/]' \| \+	 X"$ac_file" : 'X\(//\)$' \| \+	 X"$ac_file" : 'X\(/\)' \| . 2>/dev/null ||+printf "%s\n" X"$ac_file" |+    sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{+	    s//\1/+	    q+	  }+	  /^X\(\/\/\)[^/].*/{+	    s//\1/+	    q+	  }+	  /^X\(\/\/\)$/{+	    s//\1/+	    q+	  }+	  /^X\(\/\).*/{+	    s//\1/+	    q+	  }+	  s/.*/./; q'`+  as_dir="$ac_dir"; as_fn_mkdir_p+  ac_builddir=.++case "$ac_dir" in+.) ac_dir_suffix= ac_top_builddir_sub=. ac_top_build_prefix= ;;+*)+  ac_dir_suffix=/`printf "%s\n" "$ac_dir" | sed 's|^\.[\\/]||'`+  # A ".." for each directory in $ac_dir_suffix.+  ac_top_builddir_sub=`printf "%s\n" "$ac_dir_suffix" | sed 's|/[^\\/]*|/..|g;s|/||'`+  case $ac_top_builddir_sub in+  "") ac_top_builddir_sub=. ac_top_build_prefix= ;;+  *)  ac_top_build_prefix=$ac_top_builddir_sub/ ;;+  esac ;;+esac+ac_abs_top_builddir=$ac_pwd+ac_abs_builddir=$ac_pwd$ac_dir_suffix+# for backward compatibility:+ac_top_builddir=$ac_top_build_prefix++case $srcdir in+  .)  # We are building in place.+    ac_srcdir=.+    ac_top_srcdir=$ac_top_builddir_sub+    ac_abs_top_srcdir=$ac_pwd ;;+  [\\/]* | ?:[\\/]* )  # Absolute name.+    ac_srcdir=$srcdir$ac_dir_suffix;+    ac_top_srcdir=$srcdir+    ac_abs_top_srcdir=$srcdir ;;+  *) # Relative name.+    ac_srcdir=$ac_top_build_prefix$srcdir$ac_dir_suffix+    ac_top_srcdir=$ac_top_build_prefix$srcdir+    ac_abs_top_srcdir=$ac_pwd/$srcdir ;;+esac+ac_abs_srcdir=$ac_abs_top_srcdir$ac_dir_suffix+++  case $ac_mode in++  :H)+  #+  # CONFIG_HEADER+  #+  if test x"$ac_file" != x-; then+    {+      printf "%s\n" "/* $configure_input  */" >&1 \+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs"+    } >"$ac_tmp/config.h" \+      || as_fn_error $? "could not create $ac_file" "$LINENO" 5+    if diff "$ac_file" "$ac_tmp/config.h" >/dev/null 2>&1; then+      { printf "%s\n" "$as_me:${as_lineno-$LINENO}: $ac_file is unchanged" >&5+printf "%s\n" "$as_me: $ac_file is unchanged" >&6;}+    else+      rm -f "$ac_file"+      mv "$ac_tmp/config.h" "$ac_file" \+	|| as_fn_error $? "could not create $ac_file" "$LINENO" 5+    fi+  else+    printf "%s\n" "/* $configure_input  */" >&1 \+      && eval '$AWK -f "$ac_tmp/defines.awk"' "$ac_file_inputs" \+      || as_fn_error $? "could not create -" "$LINENO" 5+  fi+ ;;+++  esac++done # for ac_tag+++as_fn_exit 0+_ACEOF+ac_clean_files=$ac_clean_files_save++test $ac_write_fail = 0 ||+  as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5+++# configure is writing to config.log, and then calls config.status.+# config.status does its own redirection, appending to config.log.+# Unfortunately, on DOS this fails, as config.log is still kept open+# by configure, so config.status won't be able to write to it; its+# output is simply discarded.  So we exec the FD to /dev/null,+# effectively closing config.log, so it can be properly (re)opened and+# appended to by config.status.  When coming back to configure, we+# need to make the FD available again.+if test "$no_create" != yes; then+  ac_cs_success=:+  ac_config_status_args=+  test "$silent" = yes &&+    ac_config_status_args="$ac_config_status_args --quiet"+  exec 5>/dev/null+  $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false+  exec 5>>config.log+  # Use ||, not &&, to avoid exiting from the if with $? = 1, which+  # would make configure fail if this is the last instruction.+  $ac_cs_success || as_fn_exit 1+fi+if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then+  { printf "%s\n" "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5+printf "%s\n" "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}+fi+
configure.ac view
@@ -30,7 +30,9 @@ # check for specific header (.h) files that we are interested in AC_CHECK_HEADERS([fcntl.h limits.h sys/types.h sys/stat.h time.h]) +AC_CHECK_FUNCS([realpath]) AC_CHECK_FUNCS([utimensat])+AC_CHECK_FUNCS([CreateSymbolicLinkW]) AC_CHECK_FUNCS([GetFinalPathNameByHandleW])  # EXTEXT is defined automatically by AC_PROG_CC;
− directory.buildinfo 
@@ -1,1 +0,0 @@-install-includes: HsDirectoryConfig.h
directory.cabal view
@@ -1,7 +1,7 @@+cabal-version:  2.2 name:           directory-version:        1.3.0.0--- NOTE: Don't forget to update ./changelog.md-license:        BSD3+version:        1.3.11.0+license:        BSD-3-Clause license-file:   LICENSE maintainer:     libraries@haskell.org bug-reports:    https://github.com/haskell/directory/issues@@ -11,8 +11,7 @@   directories in a portable way. category:       System build-type:     Configure-cabal-version:  >= 1.10-tested-with:    GHC>=7.4.1+tested-with:    GHC == 8.10.7 || == 9.0.2 || == 9.2.4 || == 9.4.3  extra-tmp-files:     autom4te.cache@@ -20,16 +19,16 @@     config.status     HsDirectoryConfig.h +extra-doc-files:+    README.md+    changelog.md+ extra-source-files:     HsDirectoryConfig.h.in-    README.md     System/Directory/Internal/*.h-    changelog.md     configure     configure.ac-    directory.buildinfo     tests/*.hs-    tests/util.inl  source-repository head     type:     git@@ -37,36 +36,43 @@  Library     default-language: Haskell2010-    other-extensions:-        CPP-        Trustworthy+    other-extensions: CApiFFI, CPP      exposed-modules:         System.Directory+        System.Directory.OsPath         System.Directory.Internal         System.Directory.Internal.Prelude     other-modules:-        System.Directory.Internal.Config         System.Directory.Internal.C_utimensat+        System.Directory.Internal.Common+        System.Directory.Internal.Config         System.Directory.Internal.Posix         System.Directory.Internal.Windows      include-dirs: .      build-depends:-        base     >= 4.5 && < 4.11,-        time     >= 1.4 && < 1.8,-        filepath >= 1.3 && < 1.5+        base     >= 4.13.0 && < 4.23,+        file-io  >= 0.1.4 && < 0.3,+        time     >= 1.8.0 && < 1.17,     if os(windows)-        build-depends: Win32 >= 2.2.2 && < 2.5+        build-depends: Win32 >= 2.14.1.0 && < 2.15     else-        build-depends: unix >= 2.5.1 && < 2.8+        build-depends: unix >= 2.8.0 && < 2.9 +    if impl(ghc >= 9.2)+      build-depends: filepath >= 1.5.0 && < 1.6,+                     os-string >= 2.0.0 && < 2.1,+    else+      build-depends: filepath >= 1.4.100 && < 1.5+     ghc-options: -Wall  test-suite test     default-language: Haskell2010     other-extensions: BangPatterns, CPP+    default-extensions: OverloadedStrings     ghc-options:      -Wall     hs-source-dirs:   tests     main-is:          Main.hs@@ -91,20 +97,25 @@         DoesDirectoryExist001         DoesPathExist         FileTime+        FindExecutable         FindFile001         GetDirContents001         GetDirContents002         GetFileSize         GetHomeDirectory001+        GetHomeDirectory002         GetPermissions001+        LongPaths         MakeAbsolute+        MinimizeNameConflicts         PathIsSymbolicLink         RemoveDirectoryRecursive001         RemovePathForcibly         RenameDirectory         RenameFile001         RenamePath-        Safe+        Simplify         T8482         WithCurrentDirectory+        Xdg         -- test-modules-end
tests/CanonicalizePath.hs view
@@ -1,13 +1,14 @@ {-# LANGUAGE CPP #-} module CanonicalizePath where-#include "util.inl"-import System.FilePath ((</>), dropFileName, dropTrailingPathSeparator,-                        normalise, takeFileName)+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath import TestUtils-#ifdef mingw32_HOST_OS-import System.Directory.Internal (win32_getFinalPathNameByHandle)-import qualified System.Win32 as Win32-#endif+import Util (TestEnv)+import qualified Util as T+import System.OsPath ((</>), dropFileName, dropTrailingPathSeparator,+                      normalise, takeFileName)  main :: TestEnv -> IO () main _t = do@@ -15,10 +16,10 @@   dot2 <- canonicalizePath "."   dot3 <- canonicalizePath "./"   dot4 <- canonicalizePath "./."-  T(expectEq) () dot (dropTrailingPathSeparator dot)-  T(expectEq) () dot dot2-  T(expectEq) () dot dot3-  T(expectEq) () dot dot4+  T.expectEq _t () dot (dropTrailingPathSeparator dot)+  T.expectEq _t () dot dot2+  T.expectEq _t () dot dot3+  T.expectEq _t () dot dot4    writeFile "bar" ""   bar <- canonicalizePath "bar"@@ -28,13 +29,13 @@   bar5 <- canonicalizePath "./bar"   bar6 <- canonicalizePath "./bar/"   bar7 <- canonicalizePath "./bar/."-  T(expectEq) () bar (normalise (dot </> "bar"))-  T(expectEq) () bar bar2-  T(expectEq) () bar bar3-  T(expectEq) () bar bar4-  T(expectEq) () bar bar5-  T(expectEq) () bar bar6-  T(expectEq) () bar bar7+  T.expectEq _t () bar (normalise (dot </> "bar"))+  T.expectEq _t () bar bar2+  T.expectEq _t () bar bar3+  T.expectEq _t () bar bar4+  T.expectEq _t () bar bar5+  T.expectEq _t () bar bar6+  T.expectEq _t () bar bar7    createDirectory "foo"   foo <- canonicalizePath "foo"@@ -43,12 +44,12 @@   foo4 <- canonicalizePath "foo/./"   foo5 <- canonicalizePath "./foo"   foo6 <- canonicalizePath "./foo/"-  T(expectEq) () foo (normalise (dot </> "foo"))-  T(expectEq) () foo foo2-  T(expectEq) () foo foo3-  T(expectEq) () foo foo4-  T(expectEq) () foo foo5-  T(expectEq) () foo foo6+  T.expectEq _t () foo (normalise (dot </> "foo"))+  T.expectEq _t () foo foo2+  T.expectEq _t () foo foo3+  T.expectEq _t () foo foo4+  T.expectEq _t () foo foo5+  T.expectEq _t () foo foo6    -- should not fail for non-existent paths   fooNon <- canonicalizePath "foo/non-existent"@@ -59,57 +60,63 @@   fooNon6 <- canonicalizePath "./foo/non-existent/"   fooNon7 <- canonicalizePath "./foo/./non-existent"   fooNon8 <- canonicalizePath "./foo/./non-existent/"-  T(expectEq) () fooNon (normalise (foo </> "non-existent"))-  T(expectEq) () fooNon fooNon2-  T(expectEq) () fooNon fooNon3-  T(expectEq) () fooNon fooNon4-  T(expectEq) () fooNon fooNon5-  T(expectEq) () fooNon fooNon6-  T(expectEq) () fooNon fooNon7-  T(expectEq) () fooNon fooNon8--  supportsSymbolicLinks <- do-#ifdef mingw32_HOST_OS-    hasSymbolicLinkPrivileges <--      (True <$ createSymbolicLink "_symlinktest_src" "_symlinktest_dst")-        -- only test if symbolic links can be created-        -- (usually disabled on Windows by group policy)-        `catchIOError` \ e ->-          if isPermissionError e-          then pure False-          else ioError e--    supportsGetFinalPathNameByHandle <--      (True <$ win32_getFinalPathNameByHandle Win32.nullHANDLE 0)-        `catchIOError` \ e ->-          case ioeGetErrorType e of-            UnsupportedOperation -> pure False-            _ -> pure True+  T.expectEq _t () fooNon (normalise (foo </> "non-existent"))+  T.expectEq _t () fooNon fooNon2+  T.expectEq _t () fooNon fooNon3+  T.expectEq _t () fooNon fooNon4+  T.expectEq _t () fooNon fooNon5+  T.expectEq _t () fooNon fooNon6+  T.expectEq _t () fooNon fooNon7+  T.expectEq _t () fooNon fooNon8 -    pure (hasSymbolicLinkPrivileges && supportsGetFinalPathNameByHandle)-#else-    pure True-#endif+  -- make sure ".." gets expanded properly by 'toExtendedLengthPath'+  -- (turns out this test won't detect the problem because GetFullPathName+  -- would expand them for us if we don't, but leaving it here anyway)+  T.expectEq _t () foo =<< canonicalizePath (foo </> ".." </> "foo") +  supportsSymbolicLinks <- supportsSymlinks   when supportsSymbolicLinks $ do      let barQux = dot </> "bar" </> "qux" -    createSymbolicLink "../bar" "foo/bar"-    T(expectEq) () bar =<< canonicalizePath "foo/bar"-    T(expectEq) () barQux =<< canonicalizePath "foo/bar/qux"+    -- note: this also checks that "../bar" gets normalized to "..\\bar"+    --       since Windows does not like "/" in symbolic links targets+    createFileLink "../bar" "foo/bar"+    T.expectEq _t () bar =<< canonicalizePath "foo/bar"+    T.expectEq _t () barQux =<< canonicalizePath "foo/bar/qux" -    createSymbolicLink "foo" "lfoo"-    T(expectEq) () foo =<< canonicalizePath "lfoo"-    T(expectEq) () foo =<< canonicalizePath "lfoo/"-    T(expectEq) () bar =<< canonicalizePath "lfoo/bar"-    T(expectEq) () barQux =<< canonicalizePath "lfoo/bar/qux"+    createDirectoryLink "foo" "lfoo"+    T.expectEq _t () foo =<< canonicalizePath "lfoo"+    T.expectEq _t () foo =<< canonicalizePath "lfoo/"+    T.expectEq _t () bar =<< canonicalizePath "lfoo/bar"+    T.expectEq _t () barQux =<< canonicalizePath "lfoo/bar/qux" -    -- FIXME: uncomment this test once #64 is fixed-    -- createSymbolicLink "../foo/non-existent" "foo/qux"-    -- qux <- canonicalizePath "foo/qux"-    -- T(expectEq) () qux (dot </> "../foo/non-existent")+    -- create a haphazard chain of links+    createDirectoryLink "./../foo/../foo/." "./foo/./somelink3"+    createDirectoryLink ".././foo/somelink3" "foo/somelink2"+    createDirectoryLink "./foo/somelink2" "somelink"+    T.expectEq _t () foo =<< canonicalizePath "somelink" +    -- regression test for #64+    createFileLink "../foo/non-existent" "foo/qux"+    removeDirectoryLink "foo/somelink3" -- break the chain made earlier+    qux <- canonicalizePath "foo/qux"+    T.expectEq _t () qux =<< canonicalizePath "foo/non-existent"+    T.expectEq _t () (foo </> "somelink3") =<< canonicalizePath "somelink"++    -- make sure it can handle loops+    createFileLink "loop1" "loop2"+    createFileLink "loop2" "loop1"+    loop1 <- canonicalizePath "loop1"+    loop2 <- canonicalizePath "loop2"+    T.expectEq _t () loop1 (normalise (dot </> "loop1"))+    T.expectEq _t () loop2 (normalise (dot </> "loop2"))++    -- make sure ".." gets expanded properly by 'toExtendedLengthPath'+    createDirectoryLink (foo </> ".." </> "foo") "foolink"+    _ <- listDirectory "foolink" -- make sure directory is accessible+    T.expectEq _t () foo =<< canonicalizePath "foolink"+   caseInsensitive <-     (False <$ createDirectory "FOO")       `catch` \ e ->@@ -121,8 +128,8 @@   when caseInsensitive $ do     foo7 <- canonicalizePath "FOO"     foo8 <- canonicalizePath "FOO/"-    T(expectEq) () foo foo7-    T(expectEq) () foo foo8+    T.expectEq _t () foo foo7+    T.expectEq _t () foo foo8      fooNon9 <- canonicalizePath "FOO/non-existent"     fooNon10 <- canonicalizePath "fOo/non-existent/"@@ -132,28 +139,35 @@     fooNon14 <- canonicalizePath "./FOo/non-existent/"     cfooNon15 <- canonicalizePath "./FOO/./NON-EXISTENT"     cfooNon16 <- canonicalizePath "./FOO/./NON-EXISTENT/"-    T(expectEq) () fooNon fooNon9-    T(expectEq) () fooNon fooNon10-    T(expectEq) () fooNon fooNon11-    T(expectEq) () fooNon fooNon12-    T(expectEq) () fooNon fooNon13-    T(expectEq) () fooNon fooNon14-    T(expectEq) () fooNon (dropFileName cfooNon15 <>-                           (toLower <$> takeFileName cfooNon15))-    T(expectEq) () fooNon (dropFileName cfooNon16 <>-                           (toLower <$> takeFileName cfooNon16))-    T(expectNe) () fooNon cfooNon15-    T(expectNe) () fooNon cfooNon16+    T.expectEq _t () fooNon fooNon9+    T.expectEq _t () fooNon fooNon10+    T.expectEq _t () fooNon fooNon11+    T.expectEq _t () fooNon fooNon12+    T.expectEq _t () fooNon fooNon13+    T.expectEq _t () fooNon fooNon14+    T.expectEq _t () fooNon+      (dropFileName cfooNon15 <> os (toLower <$> so (takeFileName cfooNon15)))+    T.expectEq _t () fooNon+      (dropFileName cfooNon16 <> os (toLower <$> so (takeFileName cfooNon16)))+    T.expectNe _t () fooNon cfooNon15+    T.expectNe _t () fooNon cfooNon16      setCurrentDirectory "foo"     foo9 <- canonicalizePath "../FOO"     foo10 <- canonicalizePath "../FOO/"-    T(expectEq) () foo foo9-    T(expectEq) () foo foo10+    T.expectEq _t () foo foo9+    T.expectEq _t () foo foo10 -    -- Make sure long file names can be canonicalized too-    -- (i.e. GetLongPathName by itself won't work)-    createDirectory "verylongdirectoryname"-    vldn <- canonicalizePath "verylongdirectoryname"-    vldn2 <- canonicalizePath "VERYLONGDIRECTORYNAME"-    T(expectEq) () vldn vldn2+  let isWindows =+#if defined(mingw32_HOST_OS)+        True+#else+        False+#endif++  when isWindows $ do+    -- https://github.com/haskell/directory/issues/170+    T.expectEq _t () "\\\\localhost" =<< canonicalizePath "\\\\localhost"+    -- https://github.com/haskell/directory/issues/206+    T.expectEq _t () "\\\\localhost\\C$" =<<+      canonicalizePath "\\\\localhost\\C$\\.."
tests/CopyFile001.hs view
@@ -1,17 +1,29 @@-{-# LANGUAGE CPP #-} module CopyFile001 where-#include "util.inl"-import System.FilePath ((</>))+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import System.OsPath ((</>)) import qualified Data.List as List  main :: TestEnv -> IO () main _t = do   createDirectory dir-  writeFile (dir </> from) contents-  T(expectEq) () [from] . List.sort =<< listDirectory dir+  writeFile (so (dir </> from)) contents+  T.expectEq _t () [from] . List.sort =<< listDirectory dir   copyFile (dir </> from) (dir </> to)-  T(expectEq) () [from, to] . List.sort =<< listDirectory dir-  T(expectEq) () contents =<< readFile (dir </> to)+  T.expectEq _t () [from, to] . List.sort =<< listDirectory dir+  T.expectEq _t () contents =<< readFile (so (dir </> to))++  -- Regression test for https://github.com/haskell/directory/issues/177+  createDirectory "issue177"+  T.expectIOErrorType _t () isDoesNotExistError+    (copyFile "issue177/nonexistentSrc" "issue177/dst")+  T.expectEq _t () [] =<< listDirectory "issue177"+   where     contents = "This is the data\n"     from     = "source"
tests/CopyFile002.hs view
@@ -1,17 +1,22 @@-{-# LANGUAGE CPP #-} module CopyFile002 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T import qualified Data.List as List  main :: TestEnv -> IO () main _t = do   -- Similar to CopyFile001 but moves a file in the current directory   -- (Bug #1652 on GHC Trac)-  writeFile from contents-  T(expectEq) () [from] . List.sort =<< listDirectory "."+  writeFile (so from) contents+  T.expectEq _t () [from] . List.sort =<< listDirectory "."   copyFile from to-  T(expectEq) () [from, to] . List.sort =<< listDirectory "."-  T(expectEq) () contents =<< readFile to+  T.expectEq _t () [from, to] . List.sort =<< listDirectory "."+  T.expectEq _t () contents =<< readFile (so to)   where     contents = "This is the data\n"     from     = "source"
tests/CopyFileWithMetadata.hs view
@@ -1,6 +1,11 @@-{-# LANGUAGE CPP #-} module CopyFileWithMetadata where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T import qualified Data.List as List  main :: TestEnv -> IO ()@@ -14,28 +19,28 @@   perm <- getPermissions "a"    -- sanity check-  T(expectEq) () ["a", "b"] . List.sort =<< listDirectory "."+  T.expectEq _t () ["a", "b"] . List.sort =<< listDirectory "."    -- copy file   copyFileWithMetadata "a" "b"   copyFileWithMetadata "a" "c"    -- make sure we got the right results-  T(expectEq) () ["a", "b", "c"] . List.sort =<< listDirectory "."+  T.expectEq _t () ["a", "b", "c"] . List.sort =<< listDirectory "."   for_ ["b", "c"] $ \ f -> do-    T(expectEq) f perm =<< getPermissions f-    T(expectEq) f mtime =<< getModificationTime f-    T(expectEq) f contents =<< readFile f+    T.expectEq _t f perm =<< getPermissions f+    T.expectEq _t f mtime =<< getModificationTime f+    T.expectEq _t f contents =<< readFile (so f)    where     contents = "This is the data\n"-    mtime = read "2000-01-01 00:00:00"+    mtime = read "2000-01-01 00:00:00Z"      cleanup = do       -- needed to ensure the test runner can clean up our mess-      modifyWritable True "a" `catchIOError` \ _ -> return ()-      modifyWritable True "b" `catchIOError` \ _ -> return ()-      modifyWritable True "c" `catchIOError` \ _ -> return ()+      modifyWritable True "a" `catchIOError` \ _ -> pure ()+      modifyWritable True "b" `catchIOError` \ _ -> pure ()+      modifyWritable True "c" `catchIOError` \ _ -> pure ()      modifyWritable b f = do       perm <- getPermissions f
tests/CreateDirectory001.hs view
@@ -1,9 +1,13 @@-{-# LANGUAGE CPP #-} module CreateDirectory001 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do   createDirectory testdir-  T(expectIOErrorType) () isAlreadyExistsError (createDirectory testdir)+  T.expectIOErrorType _t () isAlreadyExistsError (createDirectory testdir)   where testdir = "dir"
tests/CreateDirectoryIfMissing001.hs view
@@ -1,7 +1,14 @@ {-# LANGUAGE CPP #-} module CreateDirectoryIfMissing001 where-#include "util.inl"-import System.FilePath ((</>), addTrailingPathSeparator)+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import Data.Either (lefts)+import System.OsPath ((</>), addTrailingPathSeparator)  main :: TestEnv -> IO () main _t = do@@ -9,7 +16,7 @@   createDirectoryIfMissing False testdir   cleanup -  T(expectIOErrorType) () isDoesNotExistError $+  T.expectIOErrorType _t () isDoesNotExistError $     createDirectoryIfMissing False testdir_a    createDirectoryIfMissing True  testdir_a@@ -19,21 +26,21 @@    createDirectoryIfMissing True  (addTrailingPathSeparator testdir_a) -  T(inform) "testing for race conditions ..."+  T.inform _t "testing for race conditions ..."   raceCheck1-  T(inform) "testing for race conditions ..."+  T.inform _t "testing for race conditions ..."   raceCheck2-  T(inform) "done."+  T.inform _t "done."   cleanup -  writeFile testdir testdir-  T(expectIOErrorType) () isAlreadyExistsError $+  writeFile (so testdir) (so testdir)+  T.expectIOErrorType _t () isAlreadyExistsError $     createDirectoryIfMissing False testdir   removeFile testdir   cleanup -  writeFile testdir testdir-  T(expectIOErrorType) () isNotADirectoryError $+  writeFile (so testdir) (so testdir)+  T.expectIOErrorType _t () isNotADirectoryError $     createDirectoryIfMissing True testdir_a   removeFile testdir   cleanup@@ -42,34 +49,35 @@      testname = "CreateDirectoryIfMissing001" -    testdir = testname <> ".d"+    testdir = os (testname <> ".d")     testdir_a = testdir </> "a" -    numRepeats = T.readArg _t testname "num-repeats" 10000+    numRepeats = T.readArg _t testname "num-repeats" 10     numThreads = T.readArg _t testname "num-threads" 4 +    forkPut mvar action = () <$ forkFinally action (putMVar mvar)+     -- Look for race conditions (bug #2808 on GHC Trac).  This fails with     -- +RTS -N2 and directory 1.0.0.2.     raceCheck1 = do       m <- newEmptyMVar-      _ <- forkIO $ do+      forkPut m $ do         replicateM_ numRepeats create-        putMVar m ()-      _ <- forkIO $ do+      forkPut m $ do         replicateM_ numRepeats cleanup-        putMVar m ()-      replicateM_ 2 (takeMVar m)+      results <- replicateM 2 (takeMVar m)+      T.expectEq _t () [] (show <$> lefts results)      -- This test fails on Windows (see bug #2924 on GHC Trac):     raceCheck2 = do       m <- newEmptyMVar-      replicateM_ numThreads $-        forkIO $ do+      replicateM_ numThreads $ do+        forkPut m $ do           replicateM_ numRepeats $ do             create             cleanup-          putMVar m ()-      replicateM_ numThreads (takeMVar m)+      results <- replicateM numThreads (takeMVar m)+      T.expectEq _t () [] (show <$> lefts results)      -- createDirectoryIfMissing is allowed to fail with isDoesNotExistError if     -- another process/thread removes one of the directories during the process@@ -79,16 +87,19 @@     -- (see bug #2924 on GHC Trac)     create =       createDirectoryIfMissing True testdir_a `catch` \ e ->-      if isDoesNotExistError e || isPermissionError e || isInappropriateTypeError e-      then return ()+      if isDoesNotExistError e+         || isPermissionError e+         || isInappropriateTypeError e+         || ioeGetErrorType e == InvalidArgument+      then pure ()       else ioError e -    cleanup = removeDirectoryRecursive testdir `catchAny` \ _ -> return ()+    cleanup = removeDirectoryRecursive testdir `catchAny` \ _ -> pure ()      catchAny :: IO a -> (SomeException -> IO a) -> IO a     catchAny = catch -#ifdef mingw32_HOST_OS+#if defined(mingw32_HOST_OS)     isNotADirectoryError = isAlreadyExistsError #else     isNotADirectoryError = isInappropriateTypeError
tests/CurrentDirectory001.hs view
@@ -1,6 +1,10 @@-{-# LANGUAGE CPP #-} module CurrentDirectory001 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T import qualified Data.List as List  main :: TestEnv -> IO ()@@ -8,6 +12,6 @@   prevDir <- getCurrentDirectory   createDirectory "dir"   setCurrentDirectory "dir"-  T(expectEq) () [".", ".."] . List.sort =<< getDirectoryContents "."+  T.expectEq _t () [".", ".."] . List.sort =<< getDirectoryContents "."   setCurrentDirectory prevDir   removeDirectory "dir"
tests/Directory001.hs view
@@ -1,6 +1,10 @@-{-# LANGUAGE CPP #-} module Directory001 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do@@ -10,7 +14,7 @@   renameFile "foo/bar" "foo/baz"   renameDirectory "foo" "bar"   str' <- readFile "bar/baz"-  T(expectEq) () str' str+  T.expectEq _t () str' str   removeFile "bar/baz"   removeDirectory "bar"
tests/DoesDirectoryExist001.hs view
@@ -1,23 +1,30 @@ {-# LANGUAGE CPP #-} module DoesDirectoryExist001 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do    -- [regression test] "/" was not recognised as a directory prior to GHC 6.1-  T(expect) () =<< doesDirectoryExist rootDir+  T.expect _t () =<< doesDirectoryExist rootDir    createDirectory "somedir" -  T(expect) () . not =<< doesDirectoryExist "nonexistent"-  T(expect) () =<< doesDirectoryExist "somedir"-#ifdef mingw32_HOST_OS-  T(expect) () =<< doesDirectoryExist "SoMeDiR"+  T.expect _t () . not =<< doesDirectoryExist ""+  T.expect _t () . not =<< doesDirectoryExist "nonexistent"+  T.expect _t () =<< doesDirectoryExist "."+  T.expect _t () =<< doesDirectoryExist "somedir"+#if defined(mingw32_HOST_OS)+  T.expect _t () =<< doesDirectoryExist "SoMeDiR" #endif    where-#ifdef mingw32_HOST_OS+#if defined(mingw32_HOST_OS)     rootDir = "C:\\" #else     rootDir = "/"
tests/DoesPathExist.hs view
@@ -1,28 +1,49 @@ {-# LANGUAGE CPP #-} module DoesPathExist where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils (supportsSymlinks)+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do -  T(expect) () =<< doesPathExist rootDir+  T.expect _t () =<< doesPathExist rootDir    createDirectory "somedir"   writeFile "somefile" "somedata"   writeFile "\x3c0\x42f\x97f3\xe6\x221e" "somedata" -  T(expect) () . not =<< doesPathExist "nonexistent"-  T(expect) () =<< doesPathExist "somedir"-  T(expect) () =<< doesPathExist "somefile"-  T(expect) () =<< doesPathExist "./somefile"-#ifdef mingw32_HOST_OS-  T(expect) () =<< doesPathExist "SoMeDiR"-  T(expect) () =<< doesPathExist "sOmEfIlE"+  T.expect _t () . not =<< doesPathExist ""+  T.expect _t () . not =<< doesPathExist "nonexistent"+  T.expect _t () =<< doesPathExist "."+  T.expect _t () =<< doesPathExist "somedir"+  T.expect _t () =<< doesPathExist "somefile"+  T.expect _t () =<< doesPathExist "./somefile"+#if defined(mingw32_HOST_OS)+  T.expect _t () =<< doesPathExist "SoMeDiR"+  T.expect _t () =<< doesPathExist "sOmEfIlE" #endif-  T(expect) () =<< doesPathExist "\x3c0\x42f\x97f3\xe6\x221e"+  T.expect _t () =<< doesPathExist "\x3c0\x42f\x97f3\xe6\x221e" +  supportsSymbolicLinks <- supportsSymlinks+  when supportsSymbolicLinks $ do++    createDirectoryLink "somedir" "somedirlink"+    createFileLink "somefile" "somefilelink"+    createFileLink "nonexistent" "nonexistentlink"++    T.expect _t () =<< doesFileExist "somefilelink"+    T.expect _t () . not =<< doesDirectoryExist "somefilelink"+    T.expect _t () =<< doesDirectoryExist "somedirlink"+    T.expect _t () . not =<< doesFileExist "somedirlink"+    T.expect _t () . not =<< doesDirectoryExist "nonexistentlink"+    T.expect _t () . not =<< doesFileExist "nonexistentlink"+   where-#ifdef mingw32_HOST_OS+#if defined(mingw32_HOST_OS)     rootDir = "C:\\" #else     rootDir = "/"
tests/FileTime.hs view
@@ -1,6 +1,10 @@-{-# LANGUAGE CPP #-} module FileTime where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T import Data.Time.Clock (addUTCTime, getCurrentTime)  main :: TestEnv -> IO ()@@ -9,13 +13,13 @@   let someTimeAgo  = addUTCTime (-3600) now       someTimeAgo' = addUTCTime (-7200) now -  T(expectIOErrorType) () isDoesNotExistError $+  T.expectIOErrorType _t () isDoesNotExistError $     getAccessTime "nonexistent-file"-  T(expectIOErrorType) () isDoesNotExistError $+  T.expectIOErrorType _t () isDoesNotExistError $     setAccessTime "nonexistent-file" someTimeAgo-  T(expectIOErrorType) () isDoesNotExistError $+  T.expectIOErrorType _t () isDoesNotExistError $     getModificationTime "nonexistent-file"-  T(expectIOErrorType) () isDoesNotExistError $+  T.expectIOErrorType _t () isDoesNotExistError $     setModificationTime "nonexistent-file" someTimeAgo    writeFile  "foo" ""@@ -31,20 +35,27 @@     mtime2 <- getModificationTime file      -- modification time should be set with at worst 1 sec resolution-    T(expectNearTime) file mtime  mtime2 1+    T.expectNearTime _t file mtime  mtime2 1      -- access time should not change, although it may lose some precision     -- on POSIX systems without 'utimensat'-    T(expectNearTime) file atime1 atime2 1+    T.expectNearTime _t file atime1 atime2 1      setAccessTime file atime      atime3 <- getAccessTime file     mtime3 <- getModificationTime file -    -- access time should be set with at worst 1 sec resolution-    T(expectNearTime) file atime  atime3 1+    when setAtime $ do+      -- access time should be set with at worst 1 sec resolution+      T.expectNearTime _t file atime atime3 1      -- modification time should not change, although it may lose some precision     -- on POSIX systems without 'utimensat'-    T(expectNearTime) file mtime2 mtime3 1+    T.expectNearTime _t file mtime2 mtime3 1++  where++    testname = "FileTime"++    setAtime = T.readArg _t testname "set-atime" True
+ tests/FindExecutable.hs view
@@ -0,0 +1,27 @@+{-# LANGUAGE CPP #-}+module FindExecutable where+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T++main :: TestEnv -> IO ()+main _t = do++  -- 'find' expected to exist on both Windows and POSIX,+  -- though we have no idea if it's writable+  Just _ <- findExecutable "find"++  T.expectEq _t () Nothing =<<+    findExecutable "__nonexistent_binary_gbowyxcejjawf7r6__"++  -- https://github.com/haskell/directory/issues/187+  T.expectEq _t () Nothing =<< findExecutable "/"+  T.expectEq _t () Nothing =<< findExecutable "//"+#if !defined(mingw32_HOST_OS)+  T.expectEq _t () Nothing =<< findExecutable "\\"+  T.expectEq _t () Nothing =<< findExecutable "\\\\"+  T.expectEq _t () Nothing =<< findExecutable "\\\\localhost\\c$"+#endif
tests/FindFile001.hs view
@@ -1,10 +1,58 @@-{-# LANGUAGE CPP #-} module FindFile001 where-#include "util.inl"-import System.FilePath ((</>))+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import qualified Data.List as List+import System.OsPath ((</>))  main :: TestEnv -> IO () main _t = do++  createDirectory "bar"+  createDirectory "qux"   writeFile "foo" ""-  found <- findFile ("." : undefined) "foo"-  T(expectEq) () found (Just ("." </> "foo"))+  writeFile (so ("bar" </> "foo")) ""+  writeFile (so ("qux" </> "foo")) ":3"++  -- make sure findFile is lazy enough+  T.expectEq _t () (Just ("." </> "foo")) =<< findFile ("." : undefined) "foo"++  -- make sure relative paths work+  T.expectEq _t () (Just ("." </> "bar" </> "foo")) =<<+    findFile ["."] ("bar" </> "foo")++  T.expectEq _t () (Just ("." </> "foo")) =<< findFile [".", "bar"] "foo"+  T.expectEq _t () (Just ("bar" </> "foo")) =<< findFile ["bar", "."] "foo"++  let f fn = (== ":3") <$> readFile (so fn)+  for_ (List.permutations ["qux", "bar", "."]) $ \ ds -> do++    let (match, noMatch) = List.partition (== "qux") ds+    match0 : _ <- pure match+    noMatch0 : _ <- pure noMatch++    T.expectEq _t ds (Just (match0 </> "foo")) =<<+      findFileWith f ds "foo"++    T.expectEq _t ds ((</> "foo") <$> match) =<< findFilesWith f ds "foo"++    T.expectEq _t ds (Just (noMatch0 </> "foo")) =<<+      findFileWith ((not <$>) . f) ds "foo"++    T.expectEq _t ds ((</> "foo") <$> noMatch) =<<+      findFilesWith ((not <$>) . f) ds "foo"++    T.expectEq _t ds Nothing =<< findFileWith (\ _ -> pure False) ds "foo"++    T.expectEq _t ds [] =<< findFilesWith (\ _ -> pure False) ds "foo"++  -- make sure absolute paths are handled properly irrespective of 'dirs'+  -- https://github.com/haskell/directory/issues/72+  absPath <- makeAbsolute ("bar" </> "foo")+  absPath2 <- makeAbsolute ("bar" </> "nonexistent")+  T.expectEq _t () (Just absPath) =<< findFile [] absPath+  T.expectEq _t () Nothing =<< findFile [] absPath2
tests/GetDirContents001.hs view
@@ -1,23 +1,28 @@-{-# LANGUAGE CPP #-} module GetDirContents001 where-#include "util.inl"-import System.FilePath ((</>))+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import System.OsPath ((</>)) import qualified Data.List as List  main :: TestEnv -> IO () main _t = do   createDirectory dir-  T(expectEq) () specials . List.sort =<<+  T.expectEq _t () specials . List.sort =<<     getDirectoryContents dir-  T(expectEq) () [] . List.sort =<<+  T.expectEq _t () [] . List.sort =<<     listDirectory dir   names <- for [1 .. 100 :: Int] $ \ i -> do-    let name = 'f' : show i-    writeFile (dir </> name) ""-    return name-  T(expectEq) () (List.sort (specials <> names)) . List.sort =<<+    let name = "f" <> os (show i)+    writeFile (so (dir </> name)) ""+    pure name+  T.expectEq _t () (List.sort (specials <> names)) . List.sort =<<     getDirectoryContents dir-  T(expectEq) () (List.sort names) . List.sort =<<+  T.expectEq _t () (List.sort names) . List.sort =<<     listDirectory dir   where dir      = "dir"         specials = [".", ".."]
tests/GetDirContents002.hs view
@@ -1,8 +1,12 @@-{-# LANGUAGE CPP #-} module GetDirContents002 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do-  T(expectIOErrorType) () isDoesNotExistError $+  T.expectIOErrorType _t () isDoesNotExistError $     getDirectoryContents "nonexistent"
tests/GetFileSize.hs view
@@ -1,17 +1,19 @@-{-# LANGUAGE CPP #-} module GetFileSize where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do -  withBinaryFile "emptyfile" WriteMode $ \ _ -> do-    return ()-  withBinaryFile "testfile" WriteMode $ \ h -> do-    hPutStr h string+  writeFile "emptyfile" ""+  writeFile "testfile" string -  T(expectEq) () 0 =<< getFileSize "emptyfile"-  T(expectEq) () (fromIntegral (length string)) =<< getFileSize "testfile"+  T.expectEq _t () 0 =<< getFileSize "emptyfile"+  T.expectEq _t () (fromIntegral (length string)) =<< getFileSize "testfile"    where     string = "The quick brown fox jumps over the lazy dog."
tests/GetHomeDirectory001.hs view
@@ -1,15 +1,20 @@-{-# LANGUAGE CPP #-} module GetHomeDirectory001 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do   homeDir <- getHomeDirectory-  T(expect) () (homeDir /= "") -- sanity check+  T.expect _t () (homeDir /= mempty) -- sanity check   _ <- getAppUserDataDirectory   "test"   _ <- getXdgDirectory XdgCache  "test"   _ <- getXdgDirectory XdgConfig "test"   _ <- getXdgDirectory XdgData   "test"+  _ <- getXdgDirectory XdgState  "test"   _ <- getUserDocumentsDirectory   _ <- getTemporaryDirectory-  return ()+  pure ()
+ tests/GetHomeDirectory002.hs view
@@ -0,0 +1,22 @@+{-# LANGUAGE CPP #-}+module GetHomeDirectory002 where++#if !defined(mingw32_HOST_OS)+import System.Posix.Env+#endif+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T++-- Test that the getpwuid_r fallback works.+-- This is only relevant on unix.+main :: TestEnv -> IO ()+main _t = do+#if !defined(mingw32_HOST_OS)+  unsetEnv "HOME"+#endif+  _ <- getHomeDirectory+  T.expect _t () True -- avoid warnings about redundant imports
tests/GetPermissions001.hs view
@@ -1,6 +1,10 @@-{-# LANGUAGE CPP #-} module GetPermissions001 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do@@ -10,37 +14,54 @@   checkOrdinary   checkTrailingSlash +  -- 'writable' is the only permission that can be changed on Windows+  writeFile "foo.txt" ""+  foo <- makeAbsolute "foo.txt"+  modifyPermissions "foo.txt" (\ p -> p { writable = False })+  T.expect _t () =<< not . writable <$> getPermissions "foo.txt"+  modifyPermissions "foo.txt" (\ p -> p { writable = True })+  T.expect _t () =<< writable <$> getPermissions "foo.txt"+  modifyPermissions "foo.txt" (\ p -> p { writable = False })+  T.expect _t () =<< not . writable <$> getPermissions "foo.txt"+  modifyPermissions foo (\ p -> p { writable = True })+  T.expect _t () =<< writable <$> getPermissions foo+  modifyPermissions foo (\ p -> p { writable = False })+  T.expect _t () =<< not . writable <$> getPermissions foo++  -- test empty path+  modifyPermissions "" id+   where      checkCurrentDir = do       -- since the current directory is created by the test runner,       -- it should be readable, writable, and searchable       p <- getPermissions "."-      T(expect) () (readable p)-      T(expect) () (writable p)-      T(expect) () (not (executable p))-      T(expect) () (searchable p)+      T.expect _t () (readable p)+      T.expect _t () (writable p)+      T.expect _t () (not (executable p))+      T.expect _t () (searchable p)      checkExecutable = do       -- 'find' expected to exist on both Windows and POSIX,       -- though we have no idea if it's writable       Just f <- findExecutable "find"       p <- getPermissions f-      T(expect) () (readable p)-      T(expect) () (executable p)-      T(expect) () (not (searchable p))+      T.expect _t () (readable p)+      T.expect _t () (executable p)+      T.expect _t () (not (searchable p))      checkOrdinary = do       writeFile "foo" ""       p <- getPermissions "foo"-      T(expect) () (readable p)-      T(expect) () (writable p)-      T(expect) () (not (executable p))-      T(expect) () (not (searchable p))+      T.expect _t () (readable p)+      T.expect _t () (writable p)+      T.expect _t () (not (executable p))+      T.expect _t () (not (searchable p))      -- [regression test] (issue #9)     -- Windows doesn't like trailing path separators     checkTrailingSlash = do       createDirectory "bar"       _ <- getPermissions "bar/"-      return ()+      pure ()
+ tests/LongPaths.hs view
@@ -0,0 +1,65 @@+module LongPaths where+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils+import Util (TestEnv)+import qualified Util as T+import System.OsPath ((</>))++main :: TestEnv -> IO ()+main _t = do+  let longName = mconcat (replicate 10 "its_very_long")+  longDir <- makeAbsolute (longName </> longName)++  supportsLongPaths <- do+      -- create 2 dirs because 1 path segment by itself can't exceed MAX_PATH+      -- tests: [createDirectory]+      createDirectory =<< makeAbsolute longName+      createDirectory longDir+      pure True+    `catchIOError` \ _ ->+      pure False++  -- skip tests on file systems that do not support long paths+  when supportsLongPaths $ do++    -- test relative paths+    let relDir = longName </> mconcat (replicate 8 "yeah_its_long")+    createDirectory relDir+    T.expect _t () =<< doesDirectoryExist relDir+    T.expectEq _t () [] =<< listDirectory relDir+    setPermissions relDir emptyPermissions+    T.expectEq _t () False =<< writable <$> getPermissions relDir++    writeFile "foobar.txt" "^.^" -- writeFile does not support long paths yet++    -- tests: [renamePath], [copyFileWithMetadata]+    renamePath "foobar.txt" (longDir </> "foobar_tmp.txt")+    renamePath (longDir </> "foobar_tmp.txt") (longDir </> "foobar.txt")+    copyFileWithMetadata (longDir </> "foobar.txt")+                         (longDir </> "foobar_copy.txt")++    -- tests: [doesDirectoryExist], [doesFileExist], [doesPathExist]+    T.expect _t () =<< doesDirectoryExist longDir+    T.expect _t () =<< doesFileExist (longDir </> "foobar.txt")+    T.expect _t () =<< doesPathExist longDir+    T.expect _t () =<< doesPathExist (longDir </> "foobar.txt")++    -- tests: [getFileSize], [getModificationTime]+    T.expectEq _t () 3 =<< getFileSize (longDir </> "foobar.txt")+    _ <- getModificationTime (longDir </> "foobar.txt")++    supportsSymbolicLinks <- supportsSymlinks+    when supportsSymbolicLinks $ do++      -- tests: [createDirectoryLink], [getSymbolicLinkTarget], [listDirectory]+      -- also tests expansion of "." and ".."+      createDirectoryLink "." (longDir </> "link")+      _ <- listDirectory (longDir </> ".." </> longName </> "link")+      T.expectEq _t () "." =<<+        getSymbolicLinkTarget (longDir </> "." </> "link")++      pure ()++  -- [removeFile], [removeDirectory] are automatically tested by the cleanup
tests/Main.hs view
@@ -11,22 +11,27 @@ import qualified DoesDirectoryExist001 import qualified DoesPathExist import qualified FileTime+import qualified FindExecutable import qualified FindFile001 import qualified GetDirContents001 import qualified GetDirContents002 import qualified GetFileSize import qualified GetHomeDirectory001+import qualified GetHomeDirectory002 import qualified GetPermissions001+import qualified LongPaths import qualified MakeAbsolute+import qualified MinimizeNameConflicts import qualified PathIsSymbolicLink import qualified RemoveDirectoryRecursive001 import qualified RemovePathForcibly import qualified RenameDirectory import qualified RenameFile001 import qualified RenamePath-import qualified Safe+import qualified Simplify import qualified T8482 import qualified WithCurrentDirectory+import qualified Xdg  main :: IO () main = T.testMain $ \ _t -> do@@ -41,19 +46,24 @@   T.isolatedRun _t "DoesDirectoryExist001" DoesDirectoryExist001.main   T.isolatedRun _t "DoesPathExist" DoesPathExist.main   T.isolatedRun _t "FileTime" FileTime.main+  T.isolatedRun _t "FindExecutable" FindExecutable.main   T.isolatedRun _t "FindFile001" FindFile001.main   T.isolatedRun _t "GetDirContents001" GetDirContents001.main   T.isolatedRun _t "GetDirContents002" GetDirContents002.main   T.isolatedRun _t "GetFileSize" GetFileSize.main   T.isolatedRun _t "GetHomeDirectory001" GetHomeDirectory001.main+  T.isolatedRun _t "GetHomeDirectory002" GetHomeDirectory002.main   T.isolatedRun _t "GetPermissions001" GetPermissions001.main+  T.isolatedRun _t "LongPaths" LongPaths.main   T.isolatedRun _t "MakeAbsolute" MakeAbsolute.main+  T.isolatedRun _t "MinimizeNameConflicts" MinimizeNameConflicts.main   T.isolatedRun _t "PathIsSymbolicLink" PathIsSymbolicLink.main   T.isolatedRun _t "RemoveDirectoryRecursive001" RemoveDirectoryRecursive001.main   T.isolatedRun _t "RemovePathForcibly" RemovePathForcibly.main   T.isolatedRun _t "RenameDirectory" RenameDirectory.main   T.isolatedRun _t "RenameFile001" RenameFile001.main   T.isolatedRun _t "RenamePath" RenamePath.main-  T.isolatedRun _t "Safe" Safe.main+  T.isolatedRun _t "Simplify" Simplify.main   T.isolatedRun _t "T8482" T8482.main   T.isolatedRun _t "WithCurrentDirectory" WithCurrentDirectory.main+  T.isolatedRun _t "Xdg" Xdg.main
tests/MakeAbsolute.hs view
@@ -1,33 +1,53 @@ {-# LANGUAGE CPP #-} module MakeAbsolute where-#include "util.inl"-import System.FilePath ((</>), addTrailingPathSeparator,-                        dropTrailingPathSeparator, normalise)+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import System.OsPath ((</>), addTrailingPathSeparator,+                      dropTrailingPathSeparator, normalise)+#if defined(mingw32_HOST_OS)+import System.Directory.Internal+import System.OsPath (takeDrive, toChar, unpack)+#endif  main :: TestEnv -> IO () main _t = do   dot <- makeAbsolute ""   dot2 <- makeAbsolute "."   dot3 <- makeAbsolute "./."-  T(expectEq) () dot (dropTrailingPathSeparator dot)-  T(expectEq) () dot dot2-  T(expectEq) () dot dot3+  T.expectEq _t () dot (dropTrailingPathSeparator dot)+  T.expectEq _t () dot dot2+  T.expectEq _t () dot dot3    sdot <- makeAbsolute "./"   sdot2 <- makeAbsolute "././"-  T(expectEq) () sdot (addTrailingPathSeparator sdot)-  T(expectEq) () sdot sdot2+  T.expectEq _t () sdot (addTrailingPathSeparator sdot)+  T.expectEq _t () sdot sdot2    foo <- makeAbsolute "foo"   foo2 <- makeAbsolute "foo/."   foo3 <- makeAbsolute "./foo"-  T(expectEq) () foo (normalise (dot </> "foo"))-  T(expectEq) () foo foo2-  T(expectEq) () foo foo3+  T.expectEq _t () foo (normalise (dot </> "foo"))+  T.expectEq _t () foo foo2+  T.expectEq _t () foo foo3    sfoo <- makeAbsolute "foo/"   sfoo2 <- makeAbsolute "foo/./"   sfoo3 <- makeAbsolute "./foo/"-  T(expectEq) () sfoo (normalise (dot </> "foo/"))-  T(expectEq) () sfoo sfoo2-  T(expectEq) () sfoo sfoo3+  T.expectEq _t () sfoo (normalise (dot </> "foo/"))+  T.expectEq _t () sfoo sfoo2+  T.expectEq _t () sfoo sfoo3++#if defined(mingw32_HOST_OS)+  cwd <- getCurrentDirectory+  cwdDriveLetter : _ <- pure (unpack (takeDrive cwd))+  let driveLetter = toUpper (toChar cwdDriveLetter)+  let driveLetter' = if driveLetter == 'Z' then 'A' else succ driveLetter+  drp1 <- makeAbsolute (os (driveLetter : ":foobar"))+  drp2 <- makeAbsolute (os (driveLetter' : ":foobar"))+  T.expectEq _t () drp1 =<< makeAbsolute "foobar"+  T.expectEq _t () drp2 (os (driveLetter' : ":\\foobar"))+#endif
+ tests/MinimizeNameConflicts.hs view
@@ -0,0 +1,39 @@+{-# LANGUAGE CPP #-}+module MinimizeNameConflicts+  ( main+  , module System.Directory.OsPath+#if defined(mingw32_HOST_OS)+  , module System.Win32+#else+  , module System.Posix+#endif+  ) where+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+#if defined(mingw32_HOST_OS)+import System.Win32 hiding+  ( copyFile+  , createDirectory+  , getCurrentDirectory+  , getTemporaryDirectory+  , removeDirectory+  , setCurrentDirectory+  )+#else+import System.Posix hiding+  ( createDirectory+  , isSymbolicLink+  , removeDirectory+  )+#endif++-- This is just a compile-test to check for name conflicts between directory+-- and other boot libraries. See for example:+-- https://github.com/haskell/directory/issues/52+main :: TestEnv -> IO ()+main _t = do+  T.expect _t ("no-op" :: String) True
tests/PathIsSymbolicLink.hs view
@@ -1,18 +1,36 @@-{-# LANGUAGE CPP #-} module PathIsSymbolicLink where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath import TestUtils+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do-  success <- (createSymbolicLink "x" "y" >> return True)-#ifdef mingw32_HOST_OS-    -- only test if symbolic links can be created-    -- (usually disabled on Windows by group policy)-    `catchIOError` \ e ->-      if isPermissionError e-      then return False-      else ioError e-#endif-  when success $-    T(expect) () =<< pathIsSymbolicLink "y"+  supportsSymbolicLinks <- supportsSymlinks+  when supportsSymbolicLinks $ do++    createFileLink "x" "y"+    createDirectoryLink "a" "b"++    T.expect _t () =<< pathIsSymbolicLink "y"+    T.expect _t () =<< pathIsSymbolicLink "b"+    T.expectEq _t () "x" =<< getSymbolicLinkTarget "y"+    T.expectEq _t () "a" =<< getSymbolicLinkTarget "b"+    T.expectEq _t () False =<< doesFileExist "y"+    T.expectEq _t () False =<< doesDirectoryExist "b"++    writeFile "x" ""+    createDirectory "a"++    T.expect _t () =<< doesFileExist "y"+    T.expect _t () =<< doesDirectoryExist "b"++    removeFile "y"+    removeDirectoryLink "b"++    T.expectIOErrorType _t () isDoesNotExistError (pathIsSymbolicLink "y")+    T.expectIOErrorType _t () isDoesNotExistError (pathIsSymbolicLink "b")+    T.expectEq _t () False =<< doesFileExist "y"+    T.expectEq _t () False =<< doesDirectoryExist "b"
tests/RemoveDirectoryRecursive001.hs view
@@ -1,9 +1,14 @@ {-# LANGUAGE CPP #-} module RemoveDirectoryRecursive001 where-#include "util.inl"-import System.FilePath ((</>), normalise)+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils (modifyPermissions, symlinkOrCopy)+import Util (TestEnv)+import qualified Util as T+import System.OsPath ((</>), normalise) import qualified Data.List as List-import TestUtils  main :: TestEnv -> IO () main _t = do@@ -12,9 +17,9 @@   -- clean up junk from previous invocations    modifyPermissions (tmp "c") (\ p -> p { writable = True })-    `catchIOError` \ _ -> return ()+    `catchIOError` \ _ -> pure ()   removeDirectoryRecursive tmpD-    `catchIOError` \ _ -> return ()+    `catchIOError` \ _ -> pure ()    ------------------------------------------------------------   -- set up@@ -24,40 +29,40 @@   createDirectoryIfMissing True (tmp "a/z")   createDirectoryIfMissing True (tmp "b")   createDirectoryIfMissing True (tmp "c")-  writeFile (tmp "a/x/w/u") "foo"-  writeFile (tmp "a/t")     "bar"-  tryCreateSymbolicLink (normalise "../a") (tmp "b/g")-  tryCreateSymbolicLink (normalise "../b") (tmp "c/h")-  tryCreateSymbolicLink (normalise "a")    (tmp "d")+  writeFile (so (tmp "a/x/w/u")) "foo"+  writeFile (so (tmp "a/t"))     "bar"+  symlinkOrCopy (normalise "../a") (tmp "b/g")+  symlinkOrCopy (normalise "../b") (tmp "c/h")+  symlinkOrCopy (normalise "a")    (tmp "d")   modifyPermissions (tmp "c") (\ p -> p { writable = False })    ------------------------------------------------------------   -- tests -  T(expectEq) () [".", "..", "a", "b", "c", "d"] . List.sort =<<+  T.expectEq _t () [".", "..", "a", "b", "c", "d"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "a")-  T(expectEq) () [".", "..", "g"] . List.sort =<<+  T.expectEq _t () [".", "..", "g"] . List.sort =<<     getDirectoryContents (tmp "b")-  T(expectEq) () [".", "..", "h"] . List.sort =<<+  T.expectEq _t () [".", "..", "h"] . List.sort =<<     getDirectoryContents (tmp "c")-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "d")    removeDirectoryRecursive (tmp "d")     `catchIOError` \ _ -> removeFile      (tmp "d")-#ifdef mingw32_HOST_OS+#if defined(mingw32_HOST_OS)     `catchIOError` \ _ -> removeDirectory (tmp "d") #endif -  T(expectEq) () [".", "..", "a", "b", "c"] . List.sort =<<+  T.expectEq _t () [".", "..", "a", "b", "c"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "a")-  T(expectEq) () [".", "..", "g"] . List.sort =<<+  T.expectEq _t () [".", "..", "g"] . List.sort =<<     getDirectoryContents (tmp "b")-  T(expectEq) () [".", "..", "h"] . List.sort =<<+  T.expectEq _t () [".", "..", "h"] . List.sort =<<     getDirectoryContents (tmp "c")    removeDirectoryRecursive (tmp "c")@@ -65,25 +70,25 @@       modifyPermissions (tmp "c") (\ p -> p { writable = True })       removeDirectoryRecursive (tmp "c") -  T(expectEq) () [".", "..", "a", "b"] . List.sort =<<+  T.expectEq _t () [".", "..", "a", "b"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<    getDirectoryContents (tmp "a")-  T(expectEq) () [".", "..", "g"] . List.sort =<<+  T.expectEq _t () [".", "..", "g"] . List.sort =<<     getDirectoryContents (tmp "b")    removeDirectoryRecursive (tmp "b") -  T(expectEq) () [".", "..", "a"] . List.sort =<<+  T.expectEq _t () [".", "..", "a"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "a")    removeDirectoryRecursive (tmp "a") -  T(expectEq) () [".", ".."] . List.sort =<<+  T.expectEq _t () [".", ".."] . List.sort =<<     getDirectoryContents  tmpD    where testName = "removeDirectoryRecursive001"-        tmpD  = testName ++ ".tmp"+        tmpD  = testName <> ".tmp"         tmp s = tmpD </> normalise s
tests/RemovePathForcibly.hs view
@@ -1,9 +1,13 @@-{-# LANGUAGE CPP #-} module RemovePathForcibly where-#include "util.inl"-import System.FilePath ((</>), normalise)+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils (hardLinkOrCopy, modifyPermissions, symlinkOrCopy)+import Util (TestEnv)+import qualified Util as T+import System.Directory.Internal+import System.OsPath ((</>), normalise) import qualified Data.List as List-import TestUtils  main :: TestEnv -> IO () main _t = do@@ -12,9 +16,9 @@   -- clean up junk from previous invocations    modifyPermissions (tmp "c") (\ p -> p { writable = True })-    `catchIOError` \ _ -> return ()+    `catchIOError` \ _ -> pure ()   removePathForcibly tmpD-    `catchIOError` \ _ -> return ()+    `catchIOError` \ _ -> pure ()    ------------------------------------------------------------   -- set up@@ -25,12 +29,12 @@   createDirectoryIfMissing True (tmp "b")   createDirectoryIfMissing True (tmp "c")   createDirectoryIfMissing True (tmp "f")-  writeFile (tmp "a/x/w/u") "foo"-  writeFile (tmp "a/t")     "bar"-  writeFile (tmp "f/s")     "qux"-  tryCreateSymbolicLink (normalise "../a") (tmp "b/g")-  tryCreateSymbolicLink (normalise "../b") (tmp "c/h")-  tryCreateSymbolicLink (normalise "a")    (tmp "d")+  writeFile (so (tmp "a/x/w/u")) "foo"+  writeFile (so (tmp "a/t"))     "bar"+  writeFile (so (tmp "f/s"))     "qux"+  symlinkOrCopy (normalise "../a") (tmp "b/g")+  symlinkOrCopy (normalise "../b") (tmp "c/h")+  symlinkOrCopy (normalise "a")    (tmp "d")   setPermissions (tmp "f/s") emptyPermissions   setPermissions (tmp "f") emptyPermissions @@ -40,49 +44,59 @@   removePathForcibly (tmp "f")   removePathForcibly (tmp "e") -- intentionally non-existent -  T(expectEq) () [".", "..", "a", "b", "c", "d"] . List.sort =<<+  T.expectEq _t () [".", "..", "a", "b", "c", "d"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "a")-  T(expectEq) () [".", "..", "g"] . List.sort =<<+  T.expectEq _t () [".", "..", "g"] . List.sort =<<     getDirectoryContents (tmp "b")-  T(expectEq) () [".", "..", "h"] . List.sort =<<+  T.expectEq _t () [".", "..", "h"] . List.sort =<<     getDirectoryContents (tmp "c")-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "d")    removePathForcibly (tmp "d") -  T(expectEq) () [".", "..", "a", "b", "c"] . List.sort =<<+  T.expectEq _t () [".", "..", "a", "b", "c"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "a")-  T(expectEq) () [".", "..", "g"] . List.sort =<<+  T.expectEq _t () [".", "..", "g"] . List.sort =<<     getDirectoryContents (tmp "b")-  T(expectEq) () [".", "..", "h"] . List.sort =<<+  T.expectEq _t () [".", "..", "h"] . List.sort =<<     getDirectoryContents (tmp "c")    removePathForcibly (tmp "c") -  T(expectEq) () [".", "..", "a", "b"] . List.sort =<<+  T.expectEq _t () [".", "..", "a", "b"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<    getDirectoryContents (tmp "a")-  T(expectEq) () [".", "..", "g"] . List.sort =<<+  T.expectEq _t () [".", "..", "g"] . List.sort =<<     getDirectoryContents (tmp "b")    removePathForcibly (tmp "b") -  T(expectEq) () [".", "..", "a"] . List.sort =<<+  T.expectEq _t () [".", "..", "a"] . List.sort =<<     getDirectoryContents  tmpD-  T(expectEq) () [".", "..", "t", "x", "y", "z"] . List.sort =<<+  T.expectEq _t () [".", "..", "t", "x", "y", "z"] . List.sort =<<     getDirectoryContents (tmp "a")    removePathForcibly (tmp "a") -  T(expectEq) () [".", ".."] . List.sort =<<+  T.expectEq _t () [".", ".."] . List.sort =<<     getDirectoryContents  tmpD +  ----------------------------------------------------------------------+  -- regression test for https://github.com/haskell/directory/issues/135+  +  writeFile "hl1" "hardlinked"+  setPermissions "hl1" emptyPermissions+  origPermissions <- getPermissions "hl1"+  hardLinkOrCopy "hl1" "hl2"+  removePathForcibly "hl2"+  T.expectEq _t () origPermissions =<< getPermissions "hl1"+   where testName = "removePathForcibly"-        tmpD  = testName ++ ".tmp"+        tmpD  = testName <> ".tmp"         tmp s = tmpD </> normalise s
tests/RenameDirectory.hs view
@@ -1,10 +1,14 @@-{-# LANGUAGE CPP #-} module RenameDirectory where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do   createDirectory "a"-  T(expectEq) () ["a"] =<< listDirectory "."+  T.expectEq _t () ["a"] =<< listDirectory "."   renameDirectory "a" "b"-  T(expectEq) () ["b"] =<< listDirectory "."+  T.expectEq _t () ["b"] =<< listDirectory "."
tests/RenameFile001.hs view
@@ -1,15 +1,20 @@-{-# LANGUAGE CPP #-} module RenameFile001 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do   writeFile tmp1 contents1-  renameFile tmp1 tmp2-  T(expectEq) () contents1 =<< readFile tmp2+  renameFile (os tmp1) (os tmp2)+  T.expectEq _t () contents1 =<< readFile tmp2   writeFile tmp1 contents2-  renameFile tmp2 tmp1-  T(expectEq) () contents1 =<< readFile tmp1+  renameFile (os tmp2) (os tmp1)+  T.expectEq _t () contents1 =<< readFile tmp1   where     tmp1 = "tmp1"     tmp2 = "tmp2"
tests/RenamePath.hs view
@@ -1,21 +1,26 @@-{-# LANGUAGE CPP #-} module RenamePath where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T  main :: TestEnv -> IO () main _t = do    createDirectory "a"-  T(expectEq) () ["a"] =<< listDirectory "."+  T.expectEq _t () ["a"] =<< listDirectory "."   renamePath "a" "b"-  T(expectEq) () ["b"] =<< listDirectory "."+  T.expectEq _t () ["b"] =<< listDirectory "."    writeFile tmp1 contents1-  renamePath tmp1 tmp2-  T(expectEq) () contents1 =<< readFile tmp2+  renamePath (os tmp1) (os tmp2)+  T.expectEq _t () contents1 =<< readFile tmp2   writeFile tmp1 contents2-  renamePath tmp2 tmp1-  T(expectEq) () contents1 =<< readFile tmp1+  renamePath (os tmp2) (os tmp1)+  T.expectEq _t () contents1 =<< readFile tmp1    where     tmp1 = "tmp1"
− tests/Safe.hs 
@@ -1,7 +0,0 @@--- Verify that System.Directory is indeed Safe (regression test for issue #30)-{-# LANGUAGE Safe #-}-module Safe where-import System.Directory ()--main :: a -> IO ()-main _ = return ()
+ tests/Simplify.hs view
@@ -0,0 +1,44 @@+{-# LANGUAGE CPP #-}+module Simplify where+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal (simplifyWindows)+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import System.OsPath (normalise)++main :: TestEnv -> IO ()+main _t = do+  T.expectIOErrorType _t () (const True) (setCurrentDirectory "")+  T.expectEq _t () (simplifyWindows "") ""+  T.expectEq _t () (simplifyWindows ".") "."+  T.expectEq _t () (simplifyWindows "a///b") (normalise "a/b")+  T.expectEq _t () (simplifyWindows "./a//b") (normalise "a/b")+  T.expectEq _t () (simplifyWindows "a/../../../b/.") (normalise "../../b")+  T.expectEq _t () (simplifyWindows "a/.././b/./") (normalise "b/")+  T.expectEq _t () (simplifyWindows "C:/a/../b") (normalise "C:/b")+  T.expectEq _t () (simplifyWindows "\\\\?\\./a\\../b") "\\\\?\\./a\\../b"+  T.expectEq _t () (simplifyWindows "C:/a") (normalise "C:/a")+  T.expectEq _t () (simplifyWindows "/a") (normalise "/a")+#ifdef mingw32_HOST_OS+  T.expectEq _t () (simplifyWindows "C:") "C:"+  T.expectEq _t () (simplifyWindows "c:\\\\") "C:\\"+  T.expectEq _t () (simplifyWindows "C:.") "C:"+  T.expectEq _t () (simplifyWindows "C:.\\\\") "C:.\\"+  T.expectEq _t () (simplifyWindows "C:..") "C:.."+  T.expectEq _t () (simplifyWindows "C:..\\") "C:..\\"+  T.expectEq _t () (simplifyWindows "C:\\.\\") "C:\\"+  T.expectEq _t () (simplifyWindows "C:\\a") "C:\\a"+  T.expectEq _t () (simplifyWindows "C:\\a\\\\b\\") "C:\\a\\b\\"+  T.expectEq _t () (simplifyWindows "\\\\a\\b") "\\\\a\\b"+  T.expectEq _t () (simplifyWindows "//a\\b/c/./d") "\\\\a\\b/c/./d"+  T.expectEq _t () (simplifyWindows "/.") "\\"+  T.expectEq _t () (simplifyWindows "/./") "\\"+  T.expectEq _t () (simplifyWindows "/../") "\\"+  T.expectEq _t () (simplifyWindows "\\a\\.") "\\a"+  T.expectEq _t () (simplifyWindows "//?") "\\\\?"+  T.expectEq _t () (simplifyWindows "//?\\") "\\\\?\\"+  T.expectEq _t () (simplifyWindows "//?/a/b") "\\\\?\\a/b"+#endif
tests/T8482.hs view
@@ -1,18 +1,23 @@-{-# LANGUAGE CPP #-} module T8482 where-#include "util.inl"+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T -tmp1 :: FilePath+tmp1 :: OsPath tmp1 = "T8482.tmp1" -testdir :: FilePath+testdir :: OsPath testdir = "T8482.dir"  main :: TestEnv -> IO () main _t = do-  writeFile tmp1 "hello"+  writeFile (so tmp1) "hello"   createDirectory testdir-  T(expectIOErrorType) () (is InappropriateType) (renameFile testdir tmp1)-  T(expectIOErrorType) () (is InappropriateType) (renameFile tmp1    testdir)-  T(expectIOErrorType) () (is InappropriateType) (renameFile tmp1    ".")+  T.expectIOErrorType _t () (is InappropriateType) (renameFile testdir tmp1)+  T.expectIOErrorType _t () (is InappropriateType) (renameFile tmp1    testdir)+  T.expectIOErrorType _t () (is InappropriateType) (renameFile tmp1    ".")   where is t = (== t) . ioeGetErrorType
tests/TestUtils.hs view
@@ -1,38 +1,28 @@-{-# LANGUAGE CPP, ForeignFunctionInterface #-}+{-# LANGUAGE CPP #-}+{-# OPTIONS_GHC -Wno-orphans #-}+-- | Utility functions specific to 'directory' tests module TestUtils   ( copyPathRecursive-  , createSymbolicLink+  , hardLinkOrCopy   , modifyPermissions-  , tryCreateSymbolicLink+  , symlinkOrCopy+  , supportsSymlinks   ) where import Prelude () import System.Directory.Internal.Prelude-import System.Directory-import System.FilePath ((</>))-#ifdef mingw32_HOST_OS-import System.FilePath (takeDirectory)+import System.Directory.Internal+import System.Directory.OsPath+import Data.String (IsString(fromString))+import System.OsPath ((</>), normalise, takeDirectory)+#if defined(mingw32_HOST_OS) import qualified System.Win32 as Win32-#else-import System.Posix (createSymbolicLink) #endif -#ifdef mingw32_HOST_OS-# if defined i386_HOST_ARCH-#  define WINAPI stdcall-# elif defined x86_64_HOST_ARCH-#  define WINAPI ccall-# else-#  error unknown architecture-# endif-foreign import WINAPI unsafe "windows.h CreateSymbolicLinkW"-  c_CreateSymbolicLink :: Ptr CWchar -> Ptr CWchar -> CULong -> IO CUChar-#endif- -- | @'copyPathRecursive' path@ copies an existing file or directory at --   /path/ together with its contents and subdirectories. -- --   Warning: mostly untested and might not handle symlinks correctly.-copyPathRecursive :: FilePath -> FilePath -> IO ()+copyPathRecursive :: OsPath -> OsPath -> IO () copyPathRecursive source dest =   (`ioeSetLocation` "copyPathRecursive") `modifyIOError` do     dirExists <- doesDirectoryExist source@@ -44,42 +34,77 @@           [(source </> x, dest </> x) | x <- contents]       else copyFile source dest -modifyPermissions :: FilePath -> (Permissions -> Permissions) -> IO ()+modifyPermissions :: OsPath -> (Permissions -> Permissions) -> IO () modifyPermissions path modify = do   permissions <- getPermissions path   setPermissions path (modify permissions) -#ifdef mingw32_HOST_OS-createSymbolicLink :: String -> String -> IO ()-createSymbolicLink target link =-  (`ioeSetLocation` "createSymbolicLink") `modifyIOError` do-    isDir <- (fromIntegral . fromEnum) `fmap`-             doesDirectoryExist (takeDirectory link </> target)-    let target' = fixSlash <$> target-    withCWString target' $ \ pTarget ->-      withCWString link $ \ pLink -> do-        status <- c_CreateSymbolicLink pLink pTarget isDir-        if status == 0-          then do-            errCode <- Win32.getLastError-            if errCode == c_ERROR_PRIVILEGE_NOT_HELD-              then ioError . (`ioeSetErrorString` permissionErrorMsg) $-                   mkIOError permissionErrorType "" Nothing (Just link)-              else Win32.failWith "createSymbolicLink" errCode-          else return ()-  where c_ERROR_PRIVILEGE_NOT_HELD = 0x522-        permissionErrorMsg = "no permission to create symbolic links"-        fixSlash '/' = '\\'-        fixSlash c   = c+-- | On Windows, the handler is called if symbolic links are unsupported or+-- the user lacks the necessary privileges to create them.  On other+-- platforms, the handler is never run.+handleSymlinkUnavail+  :: IO a                               -- ^ handler+  -> IO a                               -- ^ arbitrary action+  -> IO a+handleSymlinkUnavail _handler action = action+#if defined(mingw32_HOST_OS)+  `catchIOError` \ e ->+    case ioeGetErrorType e of+      UnsupportedOperation -> _handler+      _ | isIllegalOperation e || isPermissionError e -> _handler+      _ -> ioError e #endif --- | Attempt to create a symbolic link.  On Windows, this falls back to---   copying if forbidden due to Group Policies.-tryCreateSymbolicLink :: FilePath -> FilePath -> IO ()-tryCreateSymbolicLink target link = createSymbolicLink target link-#ifdef mingw32_HOST_OS+-- | Create a hard link on Posix. On Windows, it just copies.+hardLinkOrCopy :: OsPath -> OsPath -> IO ()+#if defined(mingw32_HOST_OS)+hardLinkOrCopy = copyPathRecursive+#else+hardLinkOrCopy = createHardLink+#endif++-- | Create a symbolic link.  On Windows, this falls back to copying if+-- forbidden by Group Policy or is not supported.  On other platforms, there+-- is no fallback.  Also, automatically detect if the source is a file or a+-- directory and create the appropriate type of link.+symlinkOrCopy :: OsPath -> OsPath -> IO ()+symlinkOrCopy target link = do+  let fullTarget = takeDirectory link </> target+  handleSymlinkUnavail (copyPathRecursive fullTarget link) $ do+    isDir <- doesDirectoryExist fullTarget+    (if isDir then createDirectoryLink else createFileLink)+      (normalise target)+      link++supportsSymlinks :: IO Bool+supportsSymlinks = do+  canCreate <- supportsLinkCreation+  canDeref <- supportsLinkDeref+  pure (canCreate && canDeref)++-- | On Windows, test if symbolic link creation is supported and the user has+-- the necessary privileges to create them.  On other platforms, this always+-- returns 'True'.+supportsLinkCreation :: IO Bool+supportsLinkCreation = do+  let path = os "_symlink_test.tmp"+  isSupported <- handleSymlinkUnavail (pure False) $ do+    True <$ createFileLink path path+  when isSupported $ do+    removeFile path+  pure isSupported++supportsLinkDeref :: IO Bool+supportsLinkDeref = do+#if defined(mingw32_HOST_OS)+    True <$ win32_getFinalPathNameByHandle Win32.nullHANDLE 0   `catchIOError` \ e ->-    if isPermissionError e-    then copyPathRecursive (takeDirectory link </> target) link-    else ioError e+    case ioeGetErrorType e of+      UnsupportedOperation -> pure False+      _ -> pure True+#else+    pure True #endif++instance IsString OsString where+  fromString = os
tests/Util.hs view
@@ -1,10 +1,15 @@ {-# LANGUAGE BangPatterns #-}+-- | A rudimentary testing framework module Util where import Prelude () import System.Directory.Internal.Prelude-import System.Directory+import System.Directory.Internal+import System.Directory.OsPath import Data.Time.Clock (NominalDiffTime, UTCTime, diffUTCTime)-import System.FilePath ((</>), normalise)+import GHC.Stack (CallStack, HasCallStack, callStack, getCallStack, srcLocFile,+                  srcLocStartLine)+import System.Environment (getEnvironment, setEnv, unsetEnv)+import System.OsPath ((</>), decodeFS, encodeFS, normalise) import qualified Data.List as List  modifyIORef' :: IORef a -> (a -> a) -> IO ()@@ -24,7 +29,7 @@   result <- timeout (round (1000000 * time)) action   case result of     Nothing -> throwIO (userError "timed out")-    Just x  -> return x+    Just x  -> pure x  data TestEnv =   TestEnv@@ -35,7 +40,7 @@   }  printInfo :: TestEnv -> [String] -> IO ()-printInfo TestEnv{testSilent = True}  _   = return ()+printInfo TestEnv{testSilent = True}  _   = pure () printInfo TestEnv{testSilent = False} msg = do   putStrLn (List.intercalate ": " msg)   hFlush stdout@@ -58,69 +63,72 @@ checkEither t prefix (Right msg) = printInfo t (prefix <> msg) checkEither t prefix (Left  msg) = printFailure t (prefix <> msg) -showContext :: Show a => String -> Integer -> a -> String-showContext file line context =-  file <> ":" <> show line <>+showContext :: Show a => CallStack -> a -> String+showContext stack context =+  case getCallStack stack of+    (_, l) : _ -> srcLocFile l <> ":" <> show (srcLocStartLine l)+    [] -> "<unknown caller>"+  <>   case show context of     "()" -> ""     s    -> ":" <> s -inform :: TestEnv -> String -> Integer -> String -> IO ()-inform t file line msg =-  printInfo t [showContext file line (), msg]+inform :: HasCallStack => TestEnv -> String -> IO ()+inform t msg =+  printInfo t [showContext callStack (), msg] -expect :: Show a => TestEnv -> String -> Integer -> a -> Bool -> IO ()-expect t file line context x =++expect :: (HasCallStack, Show a) => TestEnv -> a -> Bool -> IO ()+expect t context x =   check t x-  [showContext file line context]+  [showContext callStack context]   ["True"]   ["False, but True was expected"] -expectEq :: (Eq a, Show a, Show b) =>-            TestEnv -> String -> Integer -> b -> a -> a -> IO ()-expectEq t file line context x y =+expectEq :: (HasCallStack, Eq a, Show a, Show b) =>+            TestEnv -> b -> a -> a -> IO ()+expectEq t context x y =   check t (x == y)-  [showContext file line context]+  [showContext callStack context]   [show x <> " equals "     <> show y]   [show x <> " is not equal to " <> show y] -expectNe :: (Eq a, Show a, Show b) =>-            TestEnv -> String -> Integer -> b -> a -> a -> IO ()-expectNe t file line context x y =+expectNe :: (HasCallStack, Eq a, Show a, Show b) =>+            TestEnv -> b -> a -> a -> IO ()+expectNe t context x y =   check t (x /= y)-  [showContext file line context]+  [showContext callStack context]   [show x <> " is not equal to " <> show y]   [show x <> " equals "     <> show y] -expectNear :: (Num a, Ord a, Show a, Show b) =>-              TestEnv -> String -> Integer -> b -> a -> a -> a -> IO ()-expectNear t file line context x y diff =+expectNear :: (HasCallStack, Num a, Ord a, Show a, Show b) =>+              TestEnv -> b -> a -> a -> a -> IO ()+expectNear t context x y diff =   check t (abs (x - y) <= diff)-  [showContext file line context]+  [showContext callStack context]   [show x <> " is near "     <> show y]   [show x <> " is not near " <> show y] -expectNearTime :: Show a =>-                  TestEnv -> String -> Integer -> a ->+expectNearTime :: (HasCallStack, Show a) =>+                  TestEnv -> a ->                   UTCTime -> UTCTime -> NominalDiffTime -> IO ()-expectNearTime t file line context x y diff =+expectNearTime t context x y diff =   check t (abs (diffUTCTime x y) <= diff)-  [showContext file line context]+  [showContext callStack context]   [show x <> " is near "     <> show y]   [show x <> " is not near " <> show y] -expectIOErrorType :: Show a =>-                     TestEnv -> String -> Integer -> a-                  -> (IOError -> Bool) -> IO b -> IO ()-expectIOErrorType t file line context which action = do+expectIOErrorType :: (HasCallStack, Show a) =>+                     TestEnv -> a -> (IOError -> Bool) -> IO b -> IO ()+expectIOErrorType t context which action = do   result <- try action-  checkEither t [showContext file line context] $ case result of+  checkEither t [showContext callStack context] $ case result of     Left  e | which e   -> Right ["got expected exception (" <> show e <> ")"]             | otherwise -> Left  ["got wrong exception: ", show e]     Right _             -> Left  ["did not throw an exception"]  -- | Traverse the directory tree in preorder.-preprocessPathRecursive :: (FilePath -> IO ()) -> FilePath -> IO ()+preprocessPathRecursive :: (OsPath -> IO ()) -> OsPath -> IO () preprocessPathRecursive f path = do   dirExists <- doesDirectoryExist path   if dirExists@@ -129,26 +137,76 @@       f path       when (not isLink) $ do         names <- listDirectory path-        traverse_ (preprocessPathRecursive f) ((path </>) <$> names)+        for_ ((path </>) <$> names) (preprocessPathRecursive f)     else do       f path -withNewDirectory :: Bool -> FilePath -> IO a -> IO a+withNewDirectory :: Bool -> OsPath -> IO a -> IO a withNewDirectory keep dir action = do   dir' <- makeAbsolute dir   bracket_ (createDirectoryIfMissing True dir') (cleanup dir') action-  where cleanup dir' | keep      = return ()+  where cleanup dir' | keep      = pure ()                      | otherwise = removePathForcibly dir' -isolateWorkingDirectory :: Bool -> FilePath -> IO a -> IO a+diffAsc' :: (j -> k -> Ordering)+         -> (u -> v -> Bool)+         -> [(j, u)]+         -> [(k, v)]+         -> ([(j, u)], [(k, v)])+diffAsc' cmp eq = go id id+  where+    go a b [] [] = (a [], b [])+    go a b jus [] = go (a . (jus <>)) b [] []+    go a b [] kvs = go a (b . (kvs <>)) [] []+    go a b jus@((j, u) : jus') kvs@((k, v) : kvs') =+      case cmp j k of+        LT -> go (a . ((j, u) :)) b jus' kvs+        GT -> go a (b . ((k, v) :)) jus kvs'+        EQ | eq u v -> go a b jus' kvs'+           | otherwise -> go (a . ((j, u) :)) (b . ((k, v) :)) jus' kvs'++diffAsc :: (Ord k, Eq v) => [(k, v)] -> [(k, v)] -> ([(k, v)], [(k, v)])+diffAsc = diffAsc' compare (==)++-- Environment variables may be sensitive, so don't log their values.+scrubEnv :: (String, String) -> (String, String)+scrubEnv (k, v)+  -- Allowlist for nonsensitive variables.+  | k `elem` ["XDG_CONFIG_HOME"] = (k, v)+  | otherwise = (k, "<" <> show (length v) <> " chars>")++isolateEnvironment :: IO a -> IO a+isolateEnvironment = bracket getEnvs setEnvs . const+  where+    -- Duplicate environment variables will cause problems for this code.+    -- https://github.com/haskell/cabal/issues/10718+    getEnvs = List.sort . filter (\(k, _) -> not (null k)) <$> getEnvironment+    setEnvs target = do+      current <- getEnvs+      let (deletions, insertions) = diffAsc current target+      updateEnvs deletions insertions+      new <- getEnvs+      when (target /= new) $ do+        let (missing, extraneous) = diffAsc target new+        throwIO (userError ("isolateEnvironment.setEnvs failed:" <>+                            " deletions=" <> show (scrubEnv <$> deletions) <>+                            " insertions=" <> show (scrubEnv <$> insertions) <>+                            " missing=" <> show (scrubEnv <$> missing) <>+                            " extraneous=" <> show (scrubEnv <$> extraneous)))+    updateEnvs deletions insertions = do+      for_ deletions (unsetEnv . fst)+      for_ insertions (uncurry setEnv)++isolateWorkingDirectory :: Bool -> OsPath -> IO a -> IO a isolateWorkingDirectory keep dir action = do-  when (normalise dir `List.elem` [".", "./"]) $+  normalisedDir <- decodeFS (normalise dir)+  when (normalisedDir `List.elem` [".", "./"]) $     throwIO (userError ("isolateWorkingDirectory cannot be used " <>                         "with current directory"))   dir' <- makeAbsolute dir   removePathForcibly dir'-  withNewDirectory keep dir' $-    withCurrentDirectory dir' $+  withNewDirectory keep dir' $ do+    withCurrentDirectory dir' $ do       action  run :: TestEnv -> String -> (TestEnv -> IO ()) -> IO ()@@ -156,12 +214,14 @@   result <- tryAny (action t)   case result of     Left  e  -> check t False [name] [] ["exception", show e]-    Right () -> return ()+    Right () -> pure ()  isolatedRun :: TestEnv -> String -> (TestEnv -> IO ()) -> IO ()-isolatedRun t@TestEnv{testKeepDirs = keep} name =-  run t name .-  (isolateWorkingDirectory keep ("dist/test-" <> name <> ".tmp") .)+isolatedRun t@TestEnv{testKeepDirs = keep} name action = do+  workDir <- encodeFS ("dist-newstyle/tmp/test-" <> name <> ".tmp")+  run t name (isolate workDir . action)+  where+    isolate workDir = isolateEnvironment . isolateWorkingDirectory keep workDir  tryRead :: Read a => String -> Maybe a tryRead s =@@ -199,7 +259,7 @@           , testArgs     = args           }   action t-  n <- readIORef (counter)+  n <- readIORef counter   unless (n == 0) $ do     putStrLn ("[" <> show n <> " failures]")     hFlush stdout
tests/WithCurrentDirectory.hs view
@@ -1,22 +1,27 @@-{-# LANGUAGE CPP #-} module WithCurrentDirectory where-#include "util.inl"-import System.FilePath ((</>))+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.Internal+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import System.OsPath ((</>)) import qualified Data.List as List  main :: TestEnv -> IO () main _t = do   createDirectory dir   -- Make sure we're starting empty-  T(expectEq) () [] . List.sort =<< listDirectory dir+  T.expectEq _t () [] . List.sort =<< listDirectory dir   cwd <- getCurrentDirectory-  withCurrentDirectory dir (writeFile testfile contents)+  withCurrentDirectory dir (writeFile (so testfile) contents)   -- Are we still in original directory?-  T(expectEq) () cwd =<< getCurrentDirectory+  T.expectEq _t () cwd =<< getCurrentDirectory   -- Did the test file get created?-  T(expectEq) () [testfile] . List.sort =<< listDirectory dir+  T.expectEq _t () [testfile] . List.sort =<< listDirectory dir   -- Does the file contain what we expected to write?-  T(expectEq) () contents =<< readFile (dir </> testfile)+  T.expectEq _t () contents =<< readFile (so (dir </> testfile))   where     testfile = "testfile"     contents = "some data\n"
+ tests/Xdg.hs view
@@ -0,0 +1,65 @@+{-# LANGUAGE CPP #-}+module Xdg where+import Prelude ()+import System.Directory.Internal.Prelude+import System.Directory.OsPath+import TestUtils ()+import Util (TestEnv)+import qualified Util as T+import qualified Data.List as List+import System.Environment (setEnv, unsetEnv)+import System.FilePath (searchPathSeparator)+#if !defined(mingw32_HOST_OS)+import System.OsPath ((</>))+#endif++main :: TestEnv -> IO ()+main _t = do++  -- smoke tests+  _ <- getXdgDirectoryList XdgDataDirs+  _ <- getXdgDirectoryList XdgConfigDirs++  T.expect _t () True -- avoid warnings about redundant imports++  -- setEnv, unsetEnv require base 4.7.0.0++#if !defined(mingw32_HOST_OS)+  unsetEnv "XDG_CONFIG_HOME"+  home <- getHomeDirectory+  T.expectEq _t () (home </> ".config/mow") =<< getXdgDirectory XdgConfig "mow"+#endif++  -- unset variables, so env doesn't affect test running+  unsetEnv "XDG_DATA_HOME"+  unsetEnv "XDG_CONFIG_HOME"+  unsetEnv "XDG_CACHE_HOME"+  unsetEnv "XDG_STATE_HOME"+  xdgData   <- getXdgDirectory XdgData   "ff"+  xdgConfig <- getXdgDirectory XdgConfig "oo"+  xdgCache  <- getXdgDirectory XdgCache  "rk"+  xdgState  <- getXdgDirectory XdgState  "aa"++  -- non-absolute paths are ignored, and the fallback is used+  setEnv "XDG_DATA_HOME"   "ar"+  setEnv "XDG_CONFIG_HOME" "aw"+  setEnv "XDG_CACHE_HOME"  "ba"+  setEnv "XDG_STATE_HOME"  "uw"+  T.expectEq _t () xdgData   =<< getXdgDirectory XdgData   "ff"+  T.expectEq _t () xdgConfig =<< getXdgDirectory XdgConfig "oo"+  T.expectEq _t () xdgCache  =<< getXdgDirectory XdgCache  "rk"+  T.expectEq _t () xdgState  =<< getXdgDirectory XdgState  "aa"++  unsetEnv "XDG_CONFIG_DIRS"+  unsetEnv "XDG_DATA_DIRS"+  _xdgConfigDirs <- getXdgDirectoryList XdgConfigDirs+  _xdgDataDirs <- getXdgDirectoryList XdgDataDirs++#if !defined(mingw32_HOST_OS)+  T.expectEq _t () ["/etc/xdg"] _xdgConfigDirs+  T.expectEq _t () ["/usr/local/share/", "/usr/share/"] _xdgDataDirs+#endif++  setEnv "XDG_DATA_DIRS" (List.intercalate [searchPathSeparator] ["/a", "/b"])+  setEnv "XDG_CONFIG_DIRS" (List.intercalate [searchPathSeparator] ["/c", "/d"])+  T.expectEq _t () ["/a", "/b"] =<< getXdgDirectoryList XdgDataDirs+  T.expectEq _t () ["/c", "/d"] =<< getXdgDirectoryList XdgConfigDirs
− tests/util.inl 
@@ -1,7 +0,0 @@-#define T(f) (T.f _t __FILE__ __LINE__)--import Prelude ()-import System.Directory.Internal.Prelude-import System.Directory-import Util (TestEnv)-import qualified Util as T