diff options
Diffstat (limited to 'CabalHelper/Common.hs')
| -rw-r--r-- | CabalHelper/Common.hs | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/CabalHelper/Common.hs b/CabalHelper/Common.hs index 2e8ff6a..025380f 100644 --- a/CabalHelper/Common.hs +++ b/CabalHelper/Common.hs @@ -63,19 +63,17 @@ align n an str = let -- | @getCabalConfigHeader "dist/setup-config"@ returns the cabal version and -- compiler version -getCabalConfigHeader :: FilePath -> IO (Maybe (Version, Version)) +getCabalConfigHeader :: FilePath -> IO (Maybe (Version, (ByteString, Version))) getCabalConfigHeader file = bracket (openFile file ReadMode) hClose $ \h -> do parseHeader <$> BS.hGetLine h -parseHeader :: ByteString -> Maybe (Version, Version) +parseHeader :: ByteString -> Maybe (Version, (ByteString, Version)) parseHeader header = case BS8.words header of ["Saved", "package", "config", "for", _pkgId , "written", "by", cabalId, "using", compId] - -> liftM2 (,) (ver cabalId) (ver compId) + -> liftM2 (,) (snd <$> parsePkgId cabalId) (parsePkgId compId) _ -> Nothing - where - ver i = snd <$> parsePkgId i parsePkgId :: ByteString -> Maybe (ByteString, Version) parsePkgId bs = @@ -86,11 +84,11 @@ parsePkgId bs = parseVer :: String -> Version parseVer vers = runReadP parseVersion vers --- majorVer :: Version -> Version --- majorVer (Version b _) = Version (take 2 b) [] +majorVer :: Version -> Version +majorVer (Version b _) = Version (take 2 b) [] --- sameMajorVersion :: Version -> Version -> Bool --- sameMajorVersion a b = majorVer a == majorVer b +sameMajorVersionAs :: Version -> Version -> Bool +sameMajorVersionAs a b = majorVer a == majorVer b runReadP :: ReadP t -> String -> t runReadP p i = case filter ((=="") . snd) $ readP_to_S p i of |