ght (empty) → 0.2.0
raw patch · 6 files changed
+883/−0 lines, 6 filesdep +SHAdep +basedep +binarysetup-changed
Dependencies added: SHA, base, binary, bytestring, data-default, directory, filepath, old-locale, time, transformers, ui-command, unix, zlib
Files
- GPL-2 +339/−0
- Git/Commit.hs +73/−0
- Git/Pack.hs +37/−0
- Setup.hs +5/−0
- ght.cabal +28/−0
- tools/ght.hs +401/−0
+ GPL-2 view
@@ -0,0 +1,339 @@+ GNU GENERAL PUBLIC LICENSE+ Version 2, June 1991++ Copyright (C) 1989, 1991 Free Software Foundation, Inc.,+ 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++ Preamble++ The licenses for most software are designed to take away your+freedom to share and change it. By contrast, the GNU General Public+License is intended to guarantee your freedom to share and change free+software--to make sure the software is free for all its users. This+General Public License applies to most of the Free Software+Foundation's software and to any other program whose authors commit to+using it. (Some other Free Software Foundation software is covered by+the GNU Lesser General Public License instead.) You can apply it to+your programs, too.++ When we speak of free software, we are referring to freedom, not+price. 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+ Git/Commit.hs view
@@ -0,0 +1,73 @@+module Git.Commit (+ Commit(..),+ commitParse,+ commitPretty+) where++import qualified Data.ByteString.Lazy.Char8 as C+import Data.Digest.Pure.SHA (Digest, sha1, showDigest)++import Data.Time.Clock+import Data.Time.Format+import Data.Time.LocalTime+import System.Locale++type Author = String++type Date = String++data Commit = Commit {+ commitParent :: C.ByteString, --Digest,+ commitAuthor :: C.ByteString, --Person,+ commitAuthorDate :: C.ByteString, --Date,+ commitCommitter :: C.ByteString, --Person,+ commitCommitterDate :: C.ByteString, --Date,+ commitMessage :: C.ByteString+}++------------------------------------------------------------+-- commitParse+--++e = C.empty++defCommit = Commit e e e e e e++commitParse bs = commitParseLines defCommit (C.lines bs)++commitParseLines c [] = c++commitParseLines c (l:ls)+ | C.null l = c{commitMessage = C.unlines ls}+ | otherwise = commitParseLines (commitModLine c l) ls++commitModLine c l = commitMod c (C.unpack hd) bdy+ where (hd:bdy) = C.words l++commitMod c hd bdy+ | hd == "commit" = c+ | hd == "parent" = c{commitParent = head bdy}+ | hd == "author" = c{commitAuthor = pName, commitAuthorDate = t}+ | hd == "committer" = c{commitCommitter = pName, commitCommitterDate = t}+ | otherwise = c+ where+ (pTZ:pTime:pAs) = reverse bdy+ pName = C.unwords $ reverse pAs+ t = C.unwords [pTime, pTZ]++------------------------------------------------------------+-- commitPretty+--++commitPretty (Commit p a ad c cd m) =+ C.unlines [+ C.concat [(C.pack "Author: "), a],+ C.concat [(C.pack "Date: "), f],+ C.empty,+ m+ ]+ where+ [ps, tz] = map C.unpack $ C.words ad+ s = readTime defaultTimeLocale "%s" ps+ z = utcToZonedTime (read tz) s+ f = C.pack $ formatTime defaultTimeLocale "%c" z
+ Git/Pack.hs view
@@ -0,0 +1,37 @@+module Git.Pack (+ Pack(..),+ packParse,+ packPretty+) where++import qualified Data.ByteString.Lazy.Char8 as C+import qualified Data.ByteString.Lazy as L+import Data.Binary.Get+import Data.Word++data Pack = Pack {+ packVersion :: Word32,+ packNumObjects :: Word32+}++------------------------------------------------------------+-- packParse+--++packDeSerialize = do+ ver <- getWord32be + n <- getWord32be+ return (Pack ver n)++packParse bs = runGet packDeSerialize bs'+ where bs' = L.drop 4 bs++------------------------------------------------------------+-- packPretty+--++packPretty (Pack ver n) =+ C.unlines [+ C.concat [(C.pack "Version: "), C.pack (show ver)],+ C.concat [(C.pack "Num Objects: "), C.pack (show n)]+ ]
+ Setup.hs view
@@ -0,0 +1,5 @@+#!/usr/bin/runhaskell++import Distribution.Simple++main = defaultMain
+ ght.cabal view
@@ -0,0 +1,28 @@+Name: ght+Version: 0.2.0+License: GPL+License-file: GPL-2+Author: Conrad Parker <conrad@metadecks.org>+Maintainer: Conrad Parker <conrad@metadecks.org>+Category: Development+Synopsis: Trivial routines for inspecting git repositories+Description: This is a bunch of trivial routines for inspecting git+ repositories. It is in no way useful beyond that.+Stability: experimental+Build-Type: Simple+Cabal-Version: >= 1.2++------------------------------------------------------------+library+ Build-Depends: base < 5, data-default, bytestring, binary, SHA, old-locale, time+ Exposed-Modules: Git.Commit+ Git.Pack++------------------------------------------------------------+-- ght tool+--++Executable ght+ Main-Is: ght.hs+ Hs-Source-Dirs: ., tools+ Build-Depends: base, data-default, transformers, ui-command, unix, directory, filepath, bytestring, zlib, SHA
+ tools/ght.hs view
@@ -0,0 +1,401 @@+module Main where++import Control.Monad (liftM, when)+import Control.Monad.Trans (liftIO)++import Data.Default+import Data.List (intersperse, sort)++import UI.Command++import Git.Commit+import Git.Pack++-- show-prefix, show-root use these+import System.FilePath hiding (normalise)+import System.Directory+import System.Posix.Files++-- show+import System.IO (stdout)+import Codec.Compression.Zlib+import qualified Data.ByteString.Lazy as L+import qualified Data.ByteString.Lazy.Char8 as C+import Data.Digest.Pure.SHA (sha1, showDigest)++------------------------------------------------------------+-- show-prefix+--++ghtShowPrefix :: Command ()++ghtShowPrefix = defCmd {+ cmdName = "show-prefix",+ cmdHandler = ghtShowPrefixHandler,+ cmdCategory = "Reporting",+ cmdShortDesc = "Show path from top-level directory of repo"+ }++ghtShowPrefixHandler = do+ path <- liftIO findRoot+ cwd <- liftIO $ getCurrentDirectory+ canPath <- liftIO $ canonicalizePath path+ let relPath = makeRelative canPath cwd+ liftIO $ putStrLn (relPath ++ [pathSeparator])++------------------------------------------------------------+-- show-root+--++ghtShowRoot :: Command ()++ghtShowRoot = defCmd {+ cmdName = "show-root",+ cmdHandler = ghtShowRootHandler,+ cmdCategory = "Reporting",+ cmdShortDesc = "Show path to top-level directory of repo"+ }++ghtShowRootHandler = do+ path <- liftIO findRoot+ liftIO $ putStrLn path++------------------------------------------------------------+-- findRoot+--++gitPath :: FilePath -> IO FilePath+gitPath f = do+ root <- findRoot+ return $ root </> ".git" </> f++findRoot :: IO FilePath+findRoot = do+ mp <- liftIO $ findRoot' "."+ case mp of+ Just path -> return (path ++ [pathSeparator])+ Nothing -> error "fatal: Not a git repository (or any of the parent directories)"++findRoot' :: FilePath -> IO (Maybe FilePath)+findRoot' path = do+ b <- fileExist path+ case b of+ True -> do+ d <- dirIsRoot path+ case d of+ True -> return (Just (normalise path))+ False -> do+ let newPath = ".." </> path+ canPath <- canonicalizePath path+ canNewPath <- canonicalizePath newPath+ if (canPath == canNewPath) then+ return Nothing+ else findRoot' newPath+ False -> return Nothing+ +dirIsRoot path = do+ let dotGit = path </> ".git"+ liftIO $ fileExist dotGit+ +------------------------------------------------------------+-- normalise+--++-- NOTE: this is a modified version of normalise from filepath,+-- fixed to handle the case of a trailing dot. I sent a patch+-- with this change to ndm on 20100211; once that is upstream,+-- then this copy can be removed and the System.FilePath version+-- used instead.++-- | Normalise a file+--+-- * \/\/ outside of the drive can be made blank+--+-- * \/ -> 'pathSeparator'+--+-- * .\/ -> \"\"+--+-- > Posix: normalise "/file/\\test////" == "/file/\\test/"+-- > Posix: normalise "/file/./test" == "/file/test"+-- > Posix: normalise "/test/file/../bob/fred/" == "/test/file/../bob/fred/"+-- > Posix: normalise "../bob/fred/" == "../bob/fred/"+-- > Posix: normalise "./bob/fred/" == "bob/fred/"+-- > Windows: normalise "c:\\file/bob\\" == "C:\\file\\bob\\"+-- > Windows: normalise "c:\\" == "C:\\"+-- > Windows: normalise "\\\\server\\test" == "\\\\server\\test"+-- > Windows: normalise "c:/file" == "C:\\file"+-- > normalise "." == "."+-- > Posix: normalise "./" == "./"++normalise :: FilePath -> FilePath+normalise path = joinDrive (normaliseDrive drv) (f pth)+ ++ [pathSeparator | not (null pth) && isPathSeparator (last pth)]+ where+ (drv,pth) = splitDrive path++ f = joinPath . dropDots [] . splitDirectories . propSep++ propSep (a:b:xs)+ | isPathSeparator a && isPathSeparator b = propSep (a:xs)+ propSep (a:xs)+ | isPathSeparator a = pathSeparator : propSep xs+ propSep (x:xs) = x : propSep xs+ propSep [] = []++ dropDots acc ["."] = ["."]+ dropDots acc xs = dropDots' acc xs++ dropDots' acc (".":xs) = dropDots' acc xs+ dropDots' acc (x:xs) = dropDots' (x:acc) xs+ dropDots' acc [] = reverse acc++--joinDrive = +++normaliseDrive = id++------------------------------------------------------------+-- branch+--++ghtBranch = defCmd {+ cmdName = "branch",+ cmdHandler = ghtBranchHandler,+ cmdCategory = "Blob management",+ cmdShortDesc = "show branches",+ cmdExamples = [("Show branches available", "")]+ }++ghtBranchHandler = do+ args <- appArgs+ liftIO $ showBranches args++showBranches _ = do+ path <- gitPath $ "refs" </> "heads"+ branches <- getDirectoryContents path+ let branches' = filter (/= ".") branches+ let branches'' = filter (/= "..") branches'+ hd <- derefFile "HEAD"+ mapM_ (showBranch hd) (sort branches'')++showBranch hd b = do+ ref <- derefFile $ "refs" </> "heads" </> b+ if (ref == hd) then+ putStr "* "+ else putStr " "+ putStrLn b++------------------------------------------------------------+-- findBlob+--++findBlob [] = findBlob ["HEAD"]++findBlob (name:_) = do+ mPath <- firstExist [name,+ ("refs" </> name),+ ("refs" </> "tags" </> name),+ ("refs" </> "heads" </> name),+ ("refs" </> "remotes" </> name),+ ("refs" </> "remotes" </> name </> "HEAD")]+ case mPath of+ Just path -> do+ bs <- derefFile path+ return [C.unpack bs]+ Nothing -> return [name]++firstExist :: [FilePath] -> IO (Maybe FilePath)+firstExist [] = return Nothing+firstExist (f:fs) = do+ p <- gitPath f+ b <- fileExist p+ if b then return (Just f) else firstExist fs++------------------------------------------------------------+-- log+--++ghtLog = defCmd {+ cmdName = "log",+ cmdHandler = ghtLogHandler,+ cmdCategory = "Blob management",+ cmdShortDesc = "Show commit logs",+ cmdExamples = [("Show log of current branch", ""), ("Show log of branch feature1", "feature1")]+ }++ghtLogHandler = do+ args <- appArgs+ b <- liftIO $ findBlob args+ liftIO $ showLog b++showLog (blob:_)+ | blob == "" = return ()+ | otherwise = do+ d <- readBlob blob+ let m'pb = prettyLog blob d+ case m'pb of+ Just c -> do+ let p = C.concat [commitHeader, C.pack (blob ++ "\n"), commitPretty c]+ L.hPut stdout p+ showLog [C.unpack $ commitParent c]+ Nothing -> return ()+ where+ commitHeader = C.pack "commit "++prettyLog blob bs+ | commitHeader `L.isPrefixOf` bs = Just c+ | otherwise = Nothing+ where+ commitHeader = C.pack "commit "+ c = commitParse bs++------------------------------------------------------------+-- show-pack+--++ghtShowPack = defCmd {+ cmdName = "show-pack",+ cmdHandler = ghtShowPackHandler,+ cmdCategory = "Blob management",+ cmdShortDesc = "Show the raw dump of a pack",+ cmdExamples = [("Show raw contents of pack pack-abcd.pack", "abcd")]+ }++ghtShowPackHandler = do+ args <- appArgs+ b <- liftIO $ findPack args+ -- liftIO $ L.hPut stdout b+ let p = prettyPack b+ liftIO $ L.hPut stdout p++findPack (pack:_) = do+ path <- gitPath ("objects" </> "pack" </> ("pack-" ++ pack ++ ".pack"))+ b <- L.readFile path+ return b++prettyPack bs+ | packHeader `L.isPrefixOf` bs = packPretty $ packParse bs+ | otherwise = error "Not a pack"+ where+ packHeader = C.pack "PACK"++------------------------------------------------------------+-- show-raw+--++ghtShowRaw = defCmd {+ cmdName = "show-raw",+ cmdHandler = ghtShowRawHandler,+ cmdCategory = "Blob management",+ cmdShortDesc = "Show the raw dump of an object",+ cmdExamples = [("Show raw contents of blob deadbeef", "deadbeef"), ("Show raw contents of branch feature1", "feature1")]+ }++ghtShowRawHandler = do+ args <- appArgs+ b <- liftIO $ findBlob args+ liftIO $ showRawBlob b++showRawBlob (blob:_) = do+ d <- readBlob blob+ L.hPut stdout d++------------------------------------------------------------+-- show+--++ghtShow = defCmd {+ cmdName = "show",+ cmdHandler = ghtShowHandler,+ cmdCategory = "Blob management",+ cmdShortDesc = "Show an object",+ cmdExamples = [("Show contents of blob deadbeef", "deadbeef"), ("Show contents of branch feature1", "feature1")]+ }++ghtShowHandler = do+ args <- appArgs+ b <- liftIO $ findBlob args+ liftIO $ showBlob b++readBlob blob = do+ let (bH,bT) = splitAt 2 blob+ path <- gitPath ("objects" </> bH </> bT)+ b <- L.readFile path+ return (decompress b)++showBlob (blob:_) = do+ d <- readBlob blob+ let pb = prettyBlob blob d+ L.hPut stdout pb++prettyBlob blob bs+ | commitHeader `L.isPrefixOf` bs = C.concat [commitHeader, C.pack (blob ++ "\n"), commitPretty $ commitParse bs]+ | otherwise = chomp bs+ where+ commitHeader = C.pack "commit "++derefFile f = do+ path <- gitPath f+ bs <- L.readFile path+ deref bs++deref bs+ | refHeader `L.isPrefixOf` bs = derefFile refPath+ | otherwise = return (chomp bs)+ where+ refHeader = C.pack "ref: "+ refPath = C.unpack (chomp $ L.drop 5 bs)++chomp = C.takeWhile (/= '\n')++------------------------------------------------------------+-- hash-object+--++ghtHashObject = defCmd {+ cmdName = "hash-object",+ cmdHandler = ghtHashObjectHandler,+ cmdCategory = "Blob management",+ cmdShortDesc = "Compute object ID from a file",+ cmdExamples = [("Compute the object ID of file.c", "file.c")]+ }++ghtHashObjectHandler = do+ args <- appArgs+ liftIO $ hashFile args++hashFile [] = return ()++hashFile (path:_) = do+ b <- L.readFile path+ status <- getFileStatus path + let h = C.pack $ "blob " ++ (show $ fileSize status)+ let t = h `L.append` (L.singleton 0x0) `L.append` b+ putStrLn $ showHash t++showHash = showDigest . sha1++------------------------------------------------------------+-- The Application+--++ght :: Application () ()+ght = def {+ appName = "ght",+ appVersion = "0.1",+ appAuthors = ["Conrad Parker"],+ appBugEmail = "conrad@metadecks.org",+ appShortDesc = "Trivial git inspection tools",+ appLongDesc = longDesc,+ appCategories = ["Reporting", "Blob management"],+ appSeeAlso = ["git"],+ appProject = "Ght",+ appCmds = [ghtShowPrefix, ghtShowRoot, ghtShow, ghtLog, ghtShowRaw, ghtShowPack, ghtHashObject, ghtBranch]+ }++longDesc = "This is a bunch of trivial routines for inspecting git repositories. It is in no way useful beyond that."++------------------------------------------------------------+-- Main+--++main :: IO ()+main = appMain ght