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#!/usr/bin/env runhaskell
{-# LANGUAGE CPP #-}
{-# LANGUAGE RecordWildCards #-}
import Control.Monad
import Data.Maybe
import System.Console.GetOpt
import System.Directory
import System.Environment
import System.Exit
import System.FilePath
baseDir, rootDir :: FilePath
baseDir = takeDirectory __FILE__
rootDir = baseDir </> ".."
srcDir, refDir, outDir :: FilePath
srcDir = baseDir </> "src"
refDir = baseDir </> "ref"
outDir = baseDir </> "out"
data Config = Config
{ cfgHaddockPath :: FilePath
, cfgFiles :: [FilePath]
}
main :: IO ()
main = do
Config { .. } <- parseArgs =<< getArgs
putStrLn $ "Files to test: " ++ show cfgFiles
parseArgs :: [String] -> IO Config
parseArgs args = do
let (flags, files, errors) = getOpt Permute options args
when (not $ null errors) $ do
mapM_ putStrLn errors
exitFailure
when (FlagHelp `elem` flags) $ do
putStrLn $ usageInfo "" options
exitSuccess
cfgFiles <- processFileArgs files
let cfgHaddockPath = haddockPath flags
return $ Config { .. }
processFileArgs :: [String] -> IO [FilePath]
processFileArgs [] = filter isSourceFile <$> getDirectoryContents srcDir
processFileArgs args = pure $ map processFileArg args
processFileArg :: String -> FilePath
processFileArg arg
| isSourceFile arg = arg
| otherwise = srcDir </> arg <.> "hs"
isSourceFile :: FilePath -> Bool
isSourceFile path = takeExtension path `elem` [".hs", ".lhs"]
data Flag
= FlagHaddockPath FilePath
| FlagHelp
deriving Eq
options :: [OptDescr Flag]
options =
[ Option [] ["haddock-path"] (ReqArg FlagHaddockPath "FILE")
"path to Haddock executable to exectue tests with"
, Option ['h'] ["help"] (NoArg FlagHelp)
"display this help end exit"
]
haddockPath :: [Flag] -> FilePath
haddockPath flags = case mlast [ path | FlagHaddockPath path <- flags ] of
Just path -> path
Nothing -> rootDir </> "dist" </> "build" </> "haddock" </> "haddock"
mlast :: [a] -> Maybe a
mlast = listToMaybe . reverse
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