texbuilder (empty) → 0.1.0.1
raw patch · 17 files changed
+1805/−0 lines, 17 filesdep +ansi-wl-pprintdep +basedep +bytestringsetup-changed
Dependencies added: ansi-wl-pprint, base, bytestring, containers, cryptonite, deepseq, directory, extra, filepath, hinotify, mtl, optparse-applicative, process, temporary, unix
Files
- ChangeLog.md +6/−0
- LICENSE +674/−0
- Main.hs +125/−0
- README.md +57/−0
- Setup.hs +2/−0
- TexBuilder/ChooseEngine.hs +107/−0
- TexBuilder/CompileThread.hs +54/−0
- TexBuilder/Engine.hs +220/−0
- TexBuilder/FileFilters.hs +34/−0
- TexBuilder/TexBuilder.hs +134/−0
- TexBuilder/Utils/BinSem.hs +26/−0
- TexBuilder/Utils/File.hs +64/−0
- TexBuilder/Utils/Hashing.hs +38/−0
- TexBuilder/Utils/Inotify.hs +91/−0
- TexBuilder/ViewThread.hs +43/−0
- TexBuilder/Watches.hs +61/−0
- texbuilder.cabal +69/−0
+ ChangeLog.md view
@@ -0,0 +1,6 @@+# Revision history for tex-builder+++0.1.0.1+---+* Initial release.
+ LICENSE view
@@ -0,0 +1,674 @@+ GNU GENERAL PUBLIC LICENSE+ Version 3, 29 June 2007++ Copyright (C) 2007 Free Software Foundation, Inc. <http://fsf.org/>+ Everyone is permitted to copy and distribute verbatim copies+ of this license document, but changing it is not allowed.++ Preamble++ The GNU General Public License is a free, copyleft license for+software and other kinds of works.++ The licenses for most software and other practical works are designed+to take away your freedom to share and change the works. By contrast,+the GNU General Public License is intended to guarantee your freedom to+share and change all versions of a program--to make sure it remains free+software for all its users. We, the Free Software Foundation, use the+GNU General Public License for most of our software; it applies also to+any other work released this way by its authors. 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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Of course, your program's commands+might be different; for a GUI interface, you would use an "about box".++ You should also get your employer (if you work as a programmer) or school,+if any, to sign a "copyright disclaimer" for the program, if necessary.+For more information on this, and how to apply and follow the GNU GPL, see+<http://www.gnu.org/licenses/>.++ The GNU General Public License does not permit incorporating your program+into proprietary programs. If your program is a subroutine library, you+may consider it more useful to permit linking proprietary applications with+the library. If this is what you want to do, use the GNU Lesser General+Public License instead of this License. But first, please read+<http://www.gnu.org/philosophy/why-not-lgpl.html>.
+ Main.hs view
@@ -0,0 +1,125 @@+module Main where++import TexBuilder.TexBuilder+import TexBuilder.FileFilters+import TexBuilder.ChooseEngine++import Data.Semigroup hiding (option)+import Data.List (intercalate)+import Numeric.Natural++import Options.Applicative+import Options.Applicative.Builder+++main :: IO ()+main = execParser parser >>= id+ where+ parser = info (helper <*> opts)+ (fullDesc+ <> header hdr+ <> progDesc description )+ + opts = pure texBuilder+ <*> texOpt+ <*> optional pdfOpt+ <*> fileTypesOpt+ <*> depthOpt+ <*> (statefulFlag <|> persistFlag <|> pure Pure)+ -- <*> watchOpt+ <*> engineOption+ <*> nolatexmkFlag+ <*> numCompOpt+ <*> extraArgs++pdfOpt :: Parser FilePath+pdfOpt = option str+ ( short 'p' <> long "pdf" <> metavar "PDFFILE"+ <> help "The name of the pdf file to write to \+ \ (defaults to TEXFILE with file ending adjusted)." )++texOpt :: Parser FilePath+texOpt = option str+ ( short 't' <> long "tex" <> metavar "TEXFILE"+ <> help "The main tex file to compile." )++fileTypesOpt :: Parser Exts+fileTypesOpt = option (maybeReader readExts)+ ( short 'f' <> long "file-types" <> value (Exts ["tex","bib"])+ <> showDefaultWith showExts <> metavar "EXTENSIONS"+ <> help "Watch for changes of all files in the directory,\+ \ with these file endings." )++depthOpt :: Parser Natural+depthOpt = option auto+ ( short 'd' <> long "depth" <> value 3+ <> showDefault <> metavar "DEPTH"+ <> help "The depth to descend into directories." )++statefulFlag :: Parser StatePolicy+statefulFlag = flag' Stateful+ ( long "stateful"+ <> help "Run in stateful mode, reusing results from\+ \ previous compile runs. This improves efficiency\+ \ but may lead to artifacts in some situations.")+++persistFlag :: Parser StatePolicy+persistFlag = flag' Persistent+ ( long "persistent"+ <> help "Run in persistent mode, using the main directory\+ \ for building. If the state gets messed up, YOU\+ \ will have to fix it.")++-- | not yet ready+watchOpt :: Parser String+watchOpt = option str+ ( short 'w' <> long "watch"+ <> help "Watch for changes of these files ONLY." )++engineOption :: Parser UseEngine+engineOption = option (maybeReader readUseEngine)+ ( short 'e' <> long "engine" <> metavar "ENGINE"+ <> value UseLuaLaTex+ <> showDefaultWith showUseEngine+ <> help engineHelp )++noluaFlag :: Parser UseEngine+noluaFlag = flag UseLuaLaTex UsePdfLaTex+ ( long "noluatex"+ <> help "Do not user luaLaTex / use pdfLaTex instead." )++nolatexmkFlag :: Parser UseLatexMk+nolatexmkFlag = flag UseLatexMk UseNoLatexMk+ ( long "nolatexmk"+ <> help "Do not go through latexmk, use engine directly." )++numCompOpt :: Parser Natural+numCompOpt = option auto+ ( short 'r' <> long "recompile" <> metavar "NRECOMP" <> value 5+ <> help "The maximum number of times we should attempt to \+ \recompile the document unil it becomes stable \+ \when using the latex engine directly."+ <> showDefault )++extraArgs :: Parser [String]+extraArgs = many $ strArgument+ ( metavar "EXTRA_ARGS"+ <> help "Extra arguments to pass to the latex engine." )++hdr = "texbuilder: view your latex output while editing"++engineHelp = "Use this latex engine, can be one of ["+ <> intercalate "|" ( showUseEngine <$> [minBound..maxBound] )+ <> "]."++description =+ "This program allows you to view your document \+ \in your pdf viewer while editing it in your favorite editor. \+ \When you save your document, it will recompile it, \+ \overwrite the output pdf file and send a signal \+ \to your pdf reader to reload the file. \+ \This effectively allows for a \"continous preview\"-like \+ \experience."++
+ README.md view
@@ -0,0 +1,57 @@+# texbuilder+## What it is++This program allows you to view your latex document in your pdf+reader while editing it in your favorite editor. When you save+your document, it will recompile it, overwrite the output pdf file+and send a signal to your pdf reader to reload the file.+This effectively allows for a "continous preview"-like experience.++## Prerequisites and Dependencies+ * linux (we use inotify)+ * a recent cabal / ghc+ * (currently only works with) mupdf+ * working latex with lualatex, xelatex or pdflatex and ideally latexmk++## How to build from git++```sh+git clone https://gitlab.com/xaverdh/tex-builder+cd tex-builder+cabal sandbox init+cabal install --bindir . --ghc-option=-threaded+```+Alternatively you can use the provided [build script][build-script].+So assuming you have wget you cound do:++```sh+wget -O - https://gitlab.com/xaverdh/tex-builder/raw/master/build | sh+```++## Usage++Say you want to compile a tex file thesis.tex then standard usage would be:+```sh+texbuilder -t thesis.tex+```+By default texbuilder will use a fresh environment for every compile run. This may+sound wasteful, but is quite feasible with average sized tex files on modern harware.+And it does avoid problems with messed up state, when something goes wrong.++Still if you do have problems with performance, use the ` --stateful ` flag.++Finally if you really really need all those intermediate representation files+in your directory, use ` --persistent `.++## Legal++This program is free software: you can redistribute it and/or modify+it under the terms of the GNU General Public License as published by+the Free Software Foundation, either version 3 of the License, or+any later version.++See LICENSE for more details.+++[build-script]: https://gitlab.com/xaverdh/tex-builder/blob/master/build+
+ Setup.hs view
@@ -0,0 +1,2 @@+import Distribution.Simple+main = defaultMain
+ TexBuilder/ChooseEngine.hs view
@@ -0,0 +1,107 @@+{-# LANGUAGE LambdaCase #-}+module TexBuilder.ChooseEngine+ ( chooseEngine+ , readUseEngine+ , showUseEngine+ , UseEngine(..)+ , UseLatexMk(..) )+where++import TexBuilder.Utils.File+import TexBuilder.Engine++import qualified Text.PrettyPrint.ANSI.Leijen as PP+import Control.Applicative+import Control.Monad+import Control.Monad.Extra+import System.Exit+import Data.Monoid++++data UseEngine = + UseLuaLaTex+ | UsePdfLaTex+ | UseXeLaTex+ deriving (Enum,Bounded)++readUseEngine :: String -> Maybe UseEngine+readUseEngine s+ | s == "lualatex" = Just UseLuaLaTex+ | s == "xelatex" = Just UseXeLaTex+ | s == "pdflatex" = Just UsePdfLaTex+ | otherwise = Nothing++showUseEngine :: UseEngine -> String+showUseEngine = enginePath++data UseLatexMk = UseLatexMk | UseNoLatexMk+++chooseEngine :: UseEngine -> UseLatexMk -> IO Engine+chooseEngine useEngine useLatexmk = do+ engine <- chooseLatexEngine useEngine+ texmk <- chooseLatexMk useLatexmk+ pure $ case (engine,texmk) of+ (UseLuaLaTex,UseLatexMk) -> LuaLaTexMk+ (UseLuaLaTex,UseNoLatexMk) -> LuaLaTex+ (UsePdfLaTex,UseLatexMk) -> PdfLaTexMk+ (UsePdfLaTex,UseNoLatexMk) -> PdfLaTex+ (UseXeLaTex,UseLatexMk) -> XeLaTexMk+ (UseXeLaTex,UseNoLatexMk) -> XeLaTex+++chooseLatexEngine :: UseEngine -> IO UseEngine+chooseLatexEngine = fallback . \case+ UseLuaLaTex -> UseLuaLaTex : [UsePdfLaTex,UseXeLaTex]+ UsePdfLaTex -> UsePdfLaTex : [UseXeLaTex,UseLuaLaTex]+ UseXeLaTex -> UseXeLaTex : [UsePdfLaTex,UseLuaLaTex]+ where+ numEngines = fromEnum ( maxBound :: UseEngine )++chooseLatexMk :: UseLatexMk -> IO UseLatexMk+chooseLatexMk = \case+ UseLatexMk -> useMk+ UseNoLatexMk -> pure UseNoLatexMk++haveMk :: IO Bool+haveMk = haveExe "latexmk"++useMk :: IO UseLatexMk+useMk = ifM haveMk (pure UseLatexMk) $ do+ warn "No latexmk in PATH, using engine directly."+ pure UseNoLatexMk+++enginePath :: UseEngine -> FilePath+enginePath = \case+ UseLuaLaTex -> "lualatex"+ UsePdfLaTex -> "pdflatex"+ UseXeLaTex -> "xelatex"++haveEngine :: UseEngine -> IO Bool+haveEngine = haveExe . enginePath++fallback :: [UseEngine] -> IO UseEngine+fallback = \case+ [] -> errorNoEngine+ useEng:useEngines ->+ ifM (haveEngine useEng) (pure useEng) $ do+ warn (enginePath useEng <> " not in PATH.")+ warnFallback useEngines+ fallback useEngines+ where+ warnFallback [] = pure ()+ warnFallback (useEng:_) = + warn ("Falling back to " <> enginePath useEng <> ".")++warn :: String -> IO ()+warn s = PP.putDoc . PP.yellow+ $ PP.string s <> PP.hardline++errorNoEngine = do+ PP.putDoc . PP.red+ $ PP.string "No latex engine found!"+ exitWith $ ExitFailure 2++
+ TexBuilder/CompileThread.hs view
@@ -0,0 +1,54 @@+module TexBuilder.CompileThread+ ( compileThread )+where++import TexBuilder.Utils.BinSem+import TexBuilder.Utils.Hashing+import TexBuilder.Engine++import qualified Text.PrettyPrint.ANSI.Leijen as PP+import qualified Data.Map as M++import Control.Monad+import Control.Monad.Extra+import Control.Monad.State+import Control.Concurrent.MVar++++data CompileLoopState = CompileLoopState+ { oldHashes :: M.Map FilePath (Digest MD5)+ , watchMVar :: MVar FilePath }+++compileThread :: IO PP.Doc -- ^ The code compilation action+ -> BinSem+ -- ^ Signaling semaphore to communicate when the+ -- pdf view should be updated.+ -> MVar FilePath+ -- ^ Communication MVar for signaling file changes+ -> M.Map FilePath (Digest MD5)+ -- ^ Initial hashes+ -> IO ()+compileThread run viewSem wMVar hashes =+ evalStateT compileLoop $ CompileLoopState hashes wMVar+ where+ compileLoop = do+ path <- lift . takeMVar =<< gets watchMVar+ -- ^ Wait for watcher thread to signal potential changes+ withHash path $ \newHash -> do+ table <- gets oldHashes+ case M.lookup path table of -- ^ lookup old hash+ Nothing -> go+ Just oldHash -> when (oldHash /= newHash) go+ -- ^ Compile when file was changed+ modify $ \st ->+ st { oldHashes = M.insert path newHash table }+ -- ^ Write new hash value+ compileLoop+ + go = lift $ do+ run >>= PP.putDoc+ signal viewSem++
+ TexBuilder/Engine.hs view
@@ -0,0 +1,220 @@+{-# LANGUAGE LambdaCase, OverloadedStrings #-}+module TexBuilder.Engine+ ( Engine(..)+ , compile+ , luaLaTex+ , pdfLaTex+ , recompile+ , luaLaTexMk+ , pdfLaTexMk )+where++import TexBuilder.Utils.Hashing+import TexBuilder.Utils.File++-- import Data.Semigroup+import Data.Monoid++import Numeric.Natural+import Text.PrettyPrint.ANSI.Leijen ((<+>))+import qualified Text.PrettyPrint.ANSI.Leijen as PP++import Control.Monad.State++import System.Directory+import System.FilePath+import System.Process+import System.Exit+import System.Environment (setEnv)+import System.Posix.Time (epochTime)++data Engine =+ LuaLaTexMk+ | LuaLaTex+ | PdfLaTexMk+ | PdfLaTex+ | XeLaTexMk+ | XeLaTex++runEngine :: Natural -> Engine -> EngineImpl+runEngine nrecomp = \case+ LuaLaTexMk -> luaLaTexMk+ LuaLaTex -> recompile nrecomp luaLaTex+ PdfLaTexMk -> pdfLaTexMk+ PdfLaTex -> recompile nrecomp pdfLaTex+ XeLaTexMk -> xeLaTex+ XeLaTex -> recompile nrecomp xeLaTex++type EngineImpl =+ FilePath -> FilePath -> [String] -> IO (Either String FilePath)++data RecompileState =+ StInitial Natural+ | StSucc Natural FilePath (Digest MD5)+++-- | Recompile the code until the output stabilizes+-- or maxNum compile runs is reached.+-- Care must be taken to make the latex output reproductible.+-- Otherwise the output will never stablilize.+recompile :: Natural -> EngineImpl -> EngineImpl+recompile maxNum engine outDir texfile extraArgs = do+ time <- show <$> epochTime+ evalStateT (recompileSt (run time)) (StInitial maxNum)+ where+ run time = do+ setEnv "SOURCE_DATE_EPOCH" time+ -- ^ For reproductible output+ engine outDir texfile extraArgs+++recompileSt :: IO (Either String FilePath)+ -> StateT RecompileState IO (Either String FilePath)+recompileSt run = get >>= \case+ StInitial maxNum -> go $ succ maxNum+ StSucc i path oldHash ->+ if i <= 0 then done path+ else go $ \path hash ->+ if hash == oldHash then done path+ else succ i path hash+ where+ go k = lift run >>= \case+ Left err -> failed err+ Right path -> withHash path $ k path+ + succ i path hash = do+ put $ StSucc (i-1) path hash+ recompileSt run+ + done = pure . Right+ failed = pure . Left+++luaLaTex :: EngineImpl+luaLaTex outDir texfile extraArgs = do+ (exCode,out,err) <- readProcessWithExitCode+ "/usr/bin/lualatex" args ""+ pure $ case exCode of+ ExitSuccess -> Right $ outDir </> jobname <.> "pdf"+ ExitFailure _ -> Left out+ where+ args =+ [ "--interaction=scrollmode"+ , "--output-directory=" <> outDir+ , "--jobname=" <> jobname+ , "--output-format=pdf"+ , "--file-line-error" ]+ ++ extraArgs ++ [ texfile ]+ jobname = "texbuilder-job"++pdfLaTex :: EngineImpl+pdfLaTex outDir texfile extraArgs = do+ (exCode,out,err) <- readProcessWithExitCode+ "/usr/bin/pdflatex" args ""+ pure $ case exCode of+ ExitSuccess -> Right $ outDir </> jobname <.> "pdf"+ ExitFailure _ -> Left out+ where+ args = + [ "--interaction=scrollmode"+ , "--output-directory=" <> outDir+ , "--jobname=" <> jobname+ , "--output-format=pdf"+ , "--file-line-error" ]+ ++ extraArgs ++ [ texfile ]+ jobname = "texbuilder-job"++xeLaTex :: EngineImpl+xeLaTex outDir texfile extraArgs = do+ (exCode,out,err) <- readProcessWithExitCode+ "/usr/bin/xelatex" args ""+ pure $ case exCode of+ ExitSuccess -> Right $ outDir </> jobname <.> "pdf"+ ExitFailure _ -> Left out+ where+ args =+ [ "--interaction=scrollmode"+ , "--output-directory=" <> outDir+ , "--jobname=" <> jobname+ , "--output-format=pdf"+ , "--file-line-error" ]+ ++ extraArgs ++ [ texfile ]+ jobname = "texbuilder-job"+++xeLaTexMk :: EngineImpl+xeLaTexMk outDir texfile extraArgs = do+ (exCode,out,err) <- readProcessWithExitCode+ "/usr/bin/latexmk" args ""+ pure $ case exCode of+ ExitSuccess -> Right $ outDir </> jobname <.> "pdf"+ ExitFailure _ -> Left out+ where+ args =+ [ "-xelatex"+ , "-output-directory=" <> outDir+ , "-jobname=" <> jobname ]+ ++ extraArgs ++ [ texfile ]+ jobname = "texbuilder-job"++++luaLaTexMk :: EngineImpl+luaLaTexMk outDir texfile extraArgs = do+ (exCode,out,err) <- readProcessWithExitCode+ "/usr/bin/latexmk" args ""+ pure $ case exCode of+ ExitSuccess -> Right $ outDir </> jobname <.> "pdf"+ ExitFailure _ -> Left out+ where+ args =+ [ "-lualatex"+ , "-output-directory=" <> outDir+ , "-jobname=" <> jobname ]+ ++ extraArgs ++ [ texfile ]+ jobname = "texbuilder-job"++pdfLaTexMk :: EngineImpl+pdfLaTexMk outDir texfile extraArgs = do+ (exCode,out,err) <- readProcessWithExitCode+ "/usr/bin/latexmk" args ""+ pure $ case exCode of+ ExitSuccess -> Right $ outDir </> jobname <.> "pdf"+ ExitFailure _ -> Left out+ where+ args =+ [ "-pdf"+ , "-output-directory=" <> outDir+ , "-jobname=" <> jobname ]+ ++ extraArgs ++ [ texfile ]+ jobname = "texbuilder-job"++-- | Compile the tex code and (if successful)+-- write the output to given path. Returns human readable+-- information about the build success / failure.+compile :: Engine+ -> Natural+ -> FilePath+ -> FilePath+ -> [String]+ -> FilePath+ -> IO PP.Doc+compile engine nrecomp texfile pdffile extraArgs dir = do+ initT <- epochTime+ runEngine nrecomp engine dir texfile extraArgs >>= \case+ Left err -> pure $ PP.red $ PP.text err+ Right outFile -> do+ finalT <- epochTime+ copyFile outFile pdffile+ pure $ PP.green $+ "Successful build from"+ <+> PP.text dir <> ","+ <+> "build time was"+ <+> (PP.text . show $ finalT - initT)+ <+> "s" <> PP.hardline++ ++++
+ TexBuilder/FileFilters.hs view
@@ -0,0 +1,34 @@+module TexBuilder.FileFilters+ ( Exts(..)+ , showExts+ , readExts+ , extFilter )+where++import qualified Data.List as L+import Control.Monad.State++import System.FilePath++data Exts = Exts [String]++showExts :: Exts -> String+showExts (Exts exts) = + L.intercalate "," exts++readExts :: String -> Maybe Exts+readExts [] = Nothing+readExts s = Just $ Exts parts+ where+ parts = evalState splitter (s,[])+ + splitter = do+ (s,r) <- get+ case L.break (==',') s of+ (a,_:b) -> put (b,a:r) *> splitter+ (a,[]) -> pure (a:r) ++extFilter :: Exts -> FilePath -> Bool+extFilter (Exts exts) path =+ takeExtension path `elem` map ('.':) exts+
+ TexBuilder/TexBuilder.hs view
@@ -0,0 +1,134 @@+module TexBuilder.TexBuilder+ ( texBuilder+ , StatePolicy(..)+ , UseEngine(..)+ , UseLatexMk(..) )+where++import TexBuilder.Utils.File+import TexBuilder.Utils.Inotify+import TexBuilder.Utils.BinSem+import TexBuilder.Utils.Hashing+import TexBuilder.Engine+import TexBuilder.ChooseEngine+import TexBuilder.Watches+import TexBuilder.CompileThread+import TexBuilder.ViewThread+import TexBuilder.FileFilters++import qualified Text.PrettyPrint.ANSI.Leijen as PP+import Control.Applicative+import Control.Monad+import Control.Monad.Extra+-- import Data.Semigroup+import Data.Monoid+import Data.Maybe+import qualified Data.Map as M+import Numeric.Natural++import Options.Applicative+import Options.Applicative.Builder+import System.Directory+import System.FilePath+import System.IO.Temp+import Control.Concurrent+import Control.Concurrent.MVar+++data StatePolicy = Pure | Stateful | Persistent++texBuilder :: FilePath+ -> Maybe FilePath+ -> Exts+ -> Natural+ -> StatePolicy+ -> UseEngine+ -> UseLatexMk+ -> Natural+ -> [String]+ -> IO ()+texBuilder + texfile mbPdfFile exts depth statePolicy+ useEngine useLatexmk nrecomp extraArgs+ = do+ engine <- chooseEngine useEngine useLatexmk+ let runRaw = compile engine nrecomp texfile pdffile extraArgs+ withModRunAction statePolicy texDir listSrcFiles runRaw+ $ \run -> do+ assertFileEx texfile+ -- ^ Assert that the tex file exists+ initialCompile pdffile run+ -- ^ Do an initial compile run if appropriate+ sem <- newBinSem+ -- ^ Signaling semaphore connecting the threads+ withInitialHashes listSrcFiles $ \hashes -> do+ watchMVar <- newEmptyMVar+ wtid <- forkIO $ + setupWatches depth texDir fileFilter watchMVar+ ctid <- forkIO $+ compileThread run sem watchMVar hashes+ -- ^ The thread which compiles the tex code+ onFileEx pdffile ( mupdfView pdffile sem )+ -- ^ Enter the main thread which updates the pdf view+ putStrLn "mupdf exited, terminating"+ killThread wtid+ killThread ctid+ where+ fileFilter = extFilter exts++ texDir = takeDirectory texfile+ + listSrcFiles = listSourceFiles depth texDir fileFilter+ + pdffile = fromMaybe (texfile -<.> "pdf") mbPdfFile+++initialCompile :: FilePath -> IO PP.Doc -> IO () +initialCompile pdffile run =+ unlessM (doesFileExist pdffile) $ do+ putStrLn "No ouput file detected, compiling."+ run >>= PP.putDoc++listSourceFiles :: Natural+ -> FilePath+ -> ( FilePath -> Bool )+ -> IO [FilePath]+listSourceFiles depth texDir fileFilter = + listSubdirs depth texDir+ >>= searchFilesWith fileFilter++withInitialHashes :: IO [FilePath]+ -> ( M.Map FilePath (Digest MD5) -> IO b)+ -> IO b+withInitialHashes listSrc k = do+ files <- listSrc+ withHashes files $ k . M.fromList . zip files+++withDirSetup :: FilePath+ -> FilePath+ -> IO [FilePath]+ -> ( FilePath -> IO a ) -> IO a+withDirSetup wdir texDir listSrc k = do+ files <- listSrc+ forM_ files $ copyRelative texDir wdir+ k wdir++withModRunAction :: StatePolicy+ -> FilePath+ -> IO [FilePath]+ -> ( FilePath -> IO PP.Doc )+ -> ( IO PP.Doc -> IO a ) -> IO a+withModRunAction statePolicy texDir listSrc run k =+ case statePolicy of+ Pure -> k $ withTmp $ \tmpdir -> runIn tmpdir+ -- ^ Create fresh temporary directory every time+ Stateful-> withTmp $ \tmpdir -> k $ runIn tmpdir+ -- ^ Run in stateful temporary directory+ Persistent -> getCurrentDirectory >>= \wdir -> k $ runIn wdir+ -- ^ Run in persistent working directory+ where+ withTmp = withSystemTempDirectory "texbuilder"+ runIn wdir = withDirSetup wdir texDir listSrc run++
+ TexBuilder/Utils/BinSem.hs view
@@ -0,0 +1,26 @@+module TexBuilder.Utils.BinSem where++import Control.Concurrent.MVar+import Control.Monad+++type BinSem = MVar ()++newBinSem :: IO BinSem+newBinSem = newEmptyMVar++wait :: BinSem -> IO ()+wait = takeMVar++signal :: BinSem -> IO ()+signal = flip putMVar ()++trySignal :: BinSem -> IO Bool+trySignal = flip tryPutMVar ()++trySignal' :: BinSem -> IO ()+trySignal' = void . trySignal++++
+ TexBuilder/Utils/File.hs view
@@ -0,0 +1,64 @@+module TexBuilder.Utils.File where++import Control.Monad+import Control.Monad.Extra++import System.Directory+import System.FilePath+import System.Exit++import Numeric.Natural+import Data.Semigroup+import Data.Maybe+++listDirAbsolute :: FilePath -> IO [FilePath]+listDirAbsolute dir = do+ dir' <- makeAbsolute dir+ map (dir'</>) <$> listDirectory dir'+++listSubdirs :: Natural -> FilePath -> IO [FilePath]+listSubdirs = walkSubdirs (const pure)+++walkSubdirs :: (Natural -> FilePath -> IO a)+ -> Natural -> FilePath+ -> IO [a]+walkSubdirs f 0 dir = fmap pure $ f 0 dir+walkSubdirs f depth dir = do+ paths <- listDirAbsolute dir+ dirs <- filterM doesDirectoryExist paths+ results <- forM dirs $ walkSubdirs f (depth-1)+ (:join results) <$> f depth dir+++searchFilesWith :: (FilePath -> Bool) -> [FilePath] -> IO [FilePath]+searchFilesWith f dirs = do+ paths <- join <$> forM dirs listDirAbsolute+ pure $ filter f paths+++-- | Copy file /file/ from dir1 to dir2, creating+-- directories as needed. The path of the resulting+-- copy relative to dir2 will be the same as the path+-- of the original file relative dir1+copyRelative :: FilePath -> FilePath -> FilePath -> IO ()+copyRelative dir1 dir2 file = do+ dir1' <- makeAbsolute dir1+ let relFile = makeRelative dir1' file+ let destFile = dir2 </> relFile+ let destDir = takeDirectory destFile+ createDirectoryIfMissing True destDir+ copyFile file destFile++assertFileEx :: FilePath -> IO ()+assertFileEx file =+ unlessM (doesFileExist file) $ do+ putStrLn (file <> " does not exist.")+ exitFailure++haveExe :: String -> IO Bool+haveExe name = isJust <$> findExecutable name++
+ TexBuilder/Utils/Hashing.hs view
@@ -0,0 +1,38 @@+{-# LANGUAGE PackageImports #-}+module TexBuilder.Utils.Hashing+ ( withHash+ , withHashes+ , module Crypto.Hash )+where++import Control.Monad+import Control.Monad.Trans+import Control.DeepSeq++import "cryptonite" Crypto.Hash+import qualified Data.ByteString.Lazy as LB+-- import qualified Data.ByteString as B+++withHash :: (MonadIO io,HashAlgorithm a)+ => FilePath -> (Digest a -> io b) -> io b+withHash path k = do+ hash <- liftIO (hashlazy <$> LB.readFile path)+ deepseq hash $ k hash+ -- ^ deepseq is neccessary to force reading to+ -- actually happen here (we want to capture the+ -- _current_ state of the file).++withHashes ::+ (MonadIO io,HashAlgorithm a,Traversable t,NFData (t (Digest a)))+ => t FilePath -> (t (Digest a) -> io b) -> io b+withHashes paths k = do+ hashes <- forM paths $ \path ->+ liftIO (hashlazy <$> LB.readFile path)+ deepseq hashes $ k hashes+ -- ^ deepseq is neccessary to force reading to+ -- actually happen here (we want to capture the+ -- _current_ state of the file).+++
+ TexBuilder/Utils/Inotify.hs view
@@ -0,0 +1,91 @@+module TexBuilder.Utils.Inotify where++import TexBuilder.Utils.BinSem++import Control.Concurrent.MVar+import Control.Monad+import Control.Monad.Extra++import System.INotify+import System.Directory+import System.FilePath+++-- Be careful with this stuff.+-- Inotify is _inode_ based, but these functions want+-- to watch _paths_. So they reregister the watches+-- when necessary. Still it is probably best to look+-- at the implementation before using them.+-- Also this whole business is rather error prone..++-- ^ Simple version of /withEvent/+onEvent :: [EventVariety] -> FilePath -> IO a -> IO ()+onEvent variety file k = withEvent variety file (const k)++-- ^ Execute action once an event involving the given+-- filepath happens.+-- This function blocks.+withEvent :: [EventVariety]+ -> FilePath+ -> (Event -> IO a)+ -> IO ()+withEvent variety file k =+ withINotify $ \inotify -> do+ sem <- newBinSem+ wd <- addWatch inotify variety file+ (k >=> const (trySignal' sem))+ wait sem+ removeWatch wd++-- ^ Simple version of /loopWithEvent/+loopOnEvent :: [EventVariety] -> FilePath -> IO Bool -> IO ()+loopOnEvent variety file k = loopWithEvent variety file (const k)++-- ^ Execute action every time an Event involving the given+-- filepath happens untils the callback returns True.+-- This function blocks.+loopWithEvent :: [EventVariety] -- ^ Events to watch+ -> FilePath -- ^ Filepath to watch+ -> (Event -> IO Bool)+ -- ^ Callback. If it returns True we stop looping+ -> IO ()+loopWithEvent variety file k =+ withINotify $ \inotify -> do+ doneMVar <- newEmptyMVar+ loopWithEventImpl variety file k inotify doneMVar+++loopWithEventImpl :: [EventVariety]+ -> FilePath+ -> (Event -> IO Bool)+ -> INotify+ -> MVar Bool+ -> IO ()+loopWithEventImpl variety file k inotify doneMVar = loop+ where+ loop = do+ wd <- watch+ done <- takeMVar doneMVar+ removeWatch wd+ unless done loop+ watch = addWatch inotify variety file+ (k >=> putMVar doneMVar)+++waitForFile :: FilePath -> IO ()+waitForFile file =+ loopOnEvent [Create] dir (doesFileExist file)+ where dir = takeDirectory file+++onFileEx :: FilePath -> IO a -> IO a+onFileEx file action =+ unlessM+ (doesFileExist file)+ (waitForFile file)+ *> action+++++
+ TexBuilder/ViewThread.hs view
@@ -0,0 +1,43 @@+module TexBuilder.ViewThread+ ( mupdfView )+where++import TexBuilder.Utils.BinSem++import Data.Functor+import Control.Monad+import Control.Concurrent+import System.Posix.Types+import System.Posix.Signals+import System.Process+import System.Process.Internals++++mupdfView :: FilePath -- ^ The path of the file to view+ -> BinSem+ -- ^ Signaling semaphore to communicate when the+ -- pdf view should be updated.+ -> IO ()+mupdfView pdffile sem = do+ ph <- spawnProcess "/usr/bin/mupdf" [pdffile]+ Just pid <- getPid ph+ tid <- forkIO $ signalThread pid sem+ exCode <- waitForProcess ph+ killThread tid++signalThread :: ProcessID -> BinSem -> IO ()+signalThread pid sem = do+ wait sem+ signalProcess sigHUP pid+ signalThread pid sem + +getPid :: ProcessHandle -> IO (Maybe CPid)+getPid = flip withProcessHandle $ \ph_ ->+ case ph_ of+ OpenHandle x -> pure $ Just x+ ClosedHandle _ -> pure Nothing++++
+ TexBuilder/Watches.hs view
@@ -0,0 +1,61 @@+{-# LANGUAGE LambdaCase #-}+module TexBuilder.Watches+ ( setupWatches )+where+++import TexBuilder.Utils.File++import Control.Monad+import Control.Monad.Extra+import Control.Concurrent.MVar+import System.INotify+import System.Directory+import System.FilePath++import Numeric.Natural++setupWatches :: Natural -- ^ Depth to descend into directories+ -> FilePath -- ^ Path of the directory to watch+ -> (FilePath -> Bool) -- ^ File filter+ -> MVar FilePath+ -> IO b+setupWatches depth texDir fileFilter watchMVar =+ withINotify $ \inotify -> do+ dirMVar <- newEmptyMVar+ walkSubdirs (watch dirMVar inotify) depth texDir+ loop dirMVar inotify+ where+ watch mvar inotify depth dir = + void $ addWatch inotify [Modify,Create,Delete] dir+ ( watcherThread mvar depth dir watchMVar fileFilter )++ loop dirMVar inotify = do+ (dir,depth) <- takeMVar dirMVar+ walkSubdirs (watch dirMVar inotify) depth texDir+ loop dirMVar inotify++++watcherThread :: MVar (FilePath,Natural)+ -- ^ Directory creation MVar+ -> Natural -- ^ Depth+ -> FilePath -- ^ Directory we are watching+ -> MVar FilePath -- ^ Watch MVar+ -> (FilePath -> Bool) -- ^ File filter+ -> Event -- ^ Recieved event+ -> IO ()+watcherThread dirMVar depth dir watchMVar fileFilter = \case+ Modified False mbPath ->+ whenJust mbPath $ \path ->+ when (fileFilter path) $ post path+ Created False path ->+ when (fileFilter path) $ post path+ Created True path ->+ when (depth > 0) $ putMVar dirMVar (dir </> path,depth) + Ignored -> pure ()+ _ -> pure ()+ where+ post path = putMVar watchMVar (dir </> path)++
+ texbuilder.cabal view
@@ -0,0 +1,69 @@+-- Initial tex-builder.cabal generated by cabal init. For further +-- documentation, see http://haskell.org/cabal/users-guide/++name: texbuilder+version: 0.1.0.1+synopsis: View your latex output while editing+description: + This program allows you to view your latex document in your pdf viewer while + editing it in your favorite editor. When you save your document, this program+ will recompile it, overwrite the output pdf file and send a signal to your+ pdf reader to reload the file. This effectively allows for a+ "continous preview"-like experience.++ This will run on Linux only at the moment.+homepage: https://gitlab.com/xaverdh/tex-builder#texbuilder+license: GPL-3+license-file: LICENSE+author: Dominik Xaver Hörl+maintainer: Dominik Xaver Hörl+-- copyright: +category: LaTeX+build-type: Simple+extra-source-files: ChangeLog.md, README.md+cabal-version: >=1.10++executable texbuilder+ main-is: Main.hs+ + other-modules: TexBuilder.CompileThread+ other-modules: TexBuilder.Engine + other-modules: TexBuilder.ChooseEngine + other-modules: TexBuilder.FileFilters+ other-modules: TexBuilder.TexBuilder + other-modules: TexBuilder.Utils.BinSem+ other-modules: TexBuilder.Utils.File + other-modules: TexBuilder.Utils.Hashing+ other-modules: TexBuilder.Utils.Inotify + other-modules: TexBuilder.ViewThread+ other-modules: TexBuilder.Watches ++ other-extensions: OverloadedStrings+ other-extensions: LambdaCase+ other-extensions: PackageImports+ + build-depends: base >=4.9 && <4.11+ build-depends: optparse-applicative >=0.13 && <0.15+ build-depends: unix >=2.7 && <2.8+ build-depends: process >=1.4 && <1.7+ build-depends: hinotify >=0.3 && <0.4+ build-depends: directory >=1.3 && <1.4+ build-depends: filepath >=1.4 && <1.5+ build-depends: temporary >=1.2 && <1.3+ build-depends: mtl >= 2.2.1 && < 2.3+ build-depends: bytestring >= 0.10.8 && < 0.11+ build-depends: containers >= 0.5.7 && < 0.6+ build-depends: cryptonite >= 0.23 && <= 0.24+ build-depends: deepseq >= 1.4.2 && < 1.5+ build-depends: ansi-wl-pprint >= 0.6.7 && < 0.7+ build-depends: extra >= 1.5.3 && < 1.7+ + -- hs-source-dirs: + + default-language: Haskell2010++source-repository head+ type: git+ location: https://gitlab.com/xaverdh/tex-builder/++