65 lines
2.2 KiB
Haskell
65 lines
2.2 KiB
Haskell
{-# LANGUAGE OverloadedStrings, RecordWildCards #-}
|
|
|
|
module Cabal (getDirs, fromCabal) where
|
|
|
|
import CabalApi
|
|
import Control.Applicative
|
|
import Control.Exception
|
|
import Control.Monad
|
|
import Data.List
|
|
import Distribution.PackageDescription (BuildInfo(..), usedExtensions)
|
|
import Distribution.Text (display)
|
|
import System.Directory
|
|
import System.FilePath
|
|
import Types
|
|
|
|
----------------------------------------------------------------
|
|
|
|
fromCabal :: [GHCOption] -> IO ([GHCOption]
|
|
,[IncludeDir]
|
|
,[Package]
|
|
,[LangExt])
|
|
fromCabal ghcOptions = do
|
|
(owdir,cdir,cfile) <- getDirs
|
|
cabal <- cabalParseFile cfile
|
|
let binfo@BuildInfo{..} = cabalBuildInfo cabal
|
|
let exts = map (("-X" ++) . display) $ usedExtensions binfo
|
|
lang = maybe "-XHaskell98" (("-X" ++) . display) defaultLanguage
|
|
libs = map ("-l" ++) extraLibs
|
|
libDirs = map ("-L" ++) extraLibDirs
|
|
gopts = ghcOptions ++ exts ++ [lang] ++ libs ++ libDirs
|
|
idirs = case hsSourceDirs of
|
|
[] -> [cdir,owdir]
|
|
dirs -> map (cdir </>) dirs ++ [owdir]
|
|
let depPkgs = removeMe cfile $ cabalAllDependPackages cabal
|
|
hdrExts = cabalAllExtentions cabal
|
|
return (gopts,idirs,depPkgs,hdrExts)
|
|
|
|
removeMe :: FilePath -> [String] -> [String]
|
|
removeMe cabalfile = filter (/= me)
|
|
where
|
|
me = dropExtension $ takeFileName cabalfile
|
|
|
|
----------------------------------------------------------------
|
|
|
|
-- CurrentWorkingDir, CabalDir, CabalFile
|
|
getDirs :: IO (FilePath,FilePath,FilePath)
|
|
getDirs = do
|
|
wdir <- getCurrentDirectory
|
|
(cdir,cfile) <- cabalDir wdir
|
|
return (wdir,cdir,cfile)
|
|
|
|
-- Causes error, catched in the upper function.
|
|
-- CabalDir, CabalFile
|
|
cabalDir :: FilePath -> IO (FilePath,FilePath)
|
|
cabalDir dir = do
|
|
cnts <- (filter isCabal <$> getDirectoryContents dir)
|
|
>>= filterM (\file -> doesFileExist (dir </> file))
|
|
let dir' = takeDirectory dir
|
|
case cnts of
|
|
[] | dir' == dir -> throwIO $ userError "No cabal file"
|
|
| otherwise -> cabalDir dir'
|
|
cfile:_ -> return (dir,dir </> cfile)
|
|
where
|
|
isCabal name = ".cabal" `isSuffixOf` name && length name > 6
|