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import Distribution.Simple
import Control.Exception ( bracket_ )
import Control.Monad ( unless )
import System.Process ( runCommand, runProcess, waitForProcess )
import System.FilePath ( (</>), (<.>) )
import System.Directory
import System.IO ( stderr, openTempFile )
import System.Exit
import System.Time
import System.IO.Error ( isDoesNotExistError )
import Data.Maybe ( fromJust, isNothing, catMaybes )
import Data.List ( isInfixOf )
main = do
defaultMainWithHooks $ simpleUserHooks { runTests = runTestSuite
, postBuild = makeManPages }
exitWith ExitSuccess
-- | Run test suite.
runTestSuite _ _ _ _ = do
tempPath <- catch getTemporaryDirectory (\_ -> return ".")
(outputPath, hOut) <- openTempFile tempPath "out"
runProcess "pandoc" ["--version"] Nothing Nothing Nothing (Just hOut) Nothing >>= waitForProcess
output <- readFile outputPath
let highlightingSupport = "with syntax highlighting" `isInfixOf` output
let testArgs = if highlightingSupport then ["lhs"] else []
let testCmd = "runhaskell -i.. RunTests.hs " ++ unwords testArgs
inDirectory "tests" $ runCommand testCmd >>= waitForProcess >>= exitWith
-- | Build man pages from markdown sources in man/man1/.
makeManPages _ _ _ _ = do
mapM_ makeManPage ["pandoc.1", "hsmarkdown.1", "html2markdown.1", "markdown2pdf.1"]
-- | Build a man page from markdown source in man/man1.
makeManPage manpage = do
let manDir = "man" </> "man1"
let pandoc = "dist" </> "build" </> "pandoc" </> "pandoc"
let page = manDir </> manpage
let source = manDir </> manpage <.> "md"
modifiedDeps <- modifiedDependencies page [source]
unless (null modifiedDeps) $ do
ec <- runProcess pandoc ["-s", "-S", "-r", "markdown", "-w", "man", "-o", page, source]
Nothing Nothing Nothing Nothing (Just stderr) >>= waitForProcess
case ec of
ExitSuccess -> putStrLn $ "Created " ++ manDir </> manpage
_ -> do putStrLn $ "Error creating " ++ manDir </> manpage
exitWith ec
-- | Returns a list of 'dependencies' that have been modified after 'file'.
modifiedDependencies :: FilePath -> [FilePath] -> IO [FilePath]
modifiedDependencies file dependencies = do
fileModTime <- catch (getModificationTime file) $
\e -> if isDoesNotExistError e
then return (TOD 0 0) -- the minimum ClockTime
else ioError e
depModTimes <- mapM getModificationTime dependencies
let modified = zipWith (\dep time -> if time > fileModTime then Just dep else Nothing) dependencies depModTimes
return $ catMaybes modified
-- | Perform an IO action in a directory.
inDirectory :: FilePath -> IO a -> IO a
inDirectory dir action = do
oldDir <- getCurrentDirectory
bracket_ (setCurrentDirectory dir) (setCurrentDirectory oldDir) action
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