ghc-mod/Language/Haskell/GhcMod/PkgDoc.hs
2015-09-02 07:19:11 +02:00

30 lines
1007 B
Haskell

module Language.Haskell.GhcMod.PkgDoc (pkgDoc) where
import Language.Haskell.GhcMod.Types
import Language.Haskell.GhcMod.GhcPkg
import Language.Haskell.GhcMod.Monad
import Language.Haskell.GhcMod.Output
import Control.Applicative
import Prelude
-- | Obtaining the package name and the doc path of a module.
pkgDoc :: IOish m => String -> GhcModT m String
pkgDoc mdl = do
ghcPkg <- getGhcPkgProgram
readProc <- gmReadProcess
pkgDbStack <- getPackageDbStack
pkg <- liftIO $ trim <$> readProc ghcPkg (toModuleOpts pkgDbStack) ""
if pkg == "" then
return "\n"
else do
htmlpath <- liftIO $ readProc ghcPkg (toDocDirOpts pkg pkgDbStack) ""
let ret = pkg ++ " " ++ drop 14 htmlpath
return ret
where
toModuleOpts dbs = ["find-module", mdl, "--simple-output"]
++ ghcPkgDbStackOpts dbs
toDocDirOpts pkg dbs = ["field", pkg, "haddock-html"]
++ ghcPkgDbStackOpts dbs
trim = takeWhile (`notElem` " \n")