-----------------------------------------------------------------------------
--- $Id: DriverUtil.hs,v 1.23 2001/06/02 09:45:51 qrczak Exp $
+-- $Id: DriverUtil.hs,v 1.27 2001/08/16 11:06:10 simonmar Exp $
--
-- Utils for the driver
--
import Util
import Panic
+import Config ( cLeadingUnderscore )
import IOExts
import Exception
import Directory ( getDirectoryContents )
import IO
-import System
import List
import Char
import Monad
-#ifndef mingw32_TARGET_OS
-import Posix
-#endif
-----------------------------------------------------------------------------
-- Errors
-GLOBAL_VAR(v_Path_usage, "", String)
-
-long_usage = do
- usage_path <- readIORef v_Path_usage
- usage <- readFile usage_path
- dump usage
- exitWith ExitSuccess
- where
- dump "" = return ()
- dump ('$':'$':s) = hPutStr stderr progName >> dump s
- dump (c:s) = hPutChar stderr c >> dump s
-
-----------------------------------------------------------------------------
-- Reading OPTIONS pragmas
-> IO [String] -- options, if any
getOptionsFromSource file
= do h <- openFile file ReadMode
- catchJust ioErrors (look h)
+ catchJust ioErrors (look h `finally` hClose h)
(\e -> if isEOFError e then return [] else ioError e)
where
look h = do
softGetDirectoryContents d
= IO.catch (getDirectoryContents d)
- (\_ -> do hPutStr stderr
+ (\_ -> do hPutStrLn stderr
("WARNING: error while reading directory " ++ d)
return []
)
-----------------------------------------------------------------------------
+-- Prefixing underscore to linker-level names
+prefixUnderscore :: String -> String
+prefixUnderscore
+ | cLeadingUnderscore == "YES" = ('_':)
+ | otherwise = id
+
+-----------------------------------------------------------------------------
-- Utils
unknownFlagErr :: String -> a
Just b -> ((a,b):bs,cs)
my_prefix_match :: String -> String -> Maybe String
-my_prefix_match [] rest = Just rest
-my_prefix_match (_:_) [] = Nothing
+my_prefix_match [] rest = Just rest
+my_prefix_match (_:_) [] = Nothing
my_prefix_match (p:pat) (r:rest)
| p == r = my_prefix_match pat rest
| otherwise = Nothing
xs <- readIORef var
unless (x `elem` xs) $ writeIORef var (x:xs)
-splitFilename :: String -> (String,String)
+------------------------------------------------------
+-- Filename manipulation
+------------------------------------------------------
+
+type Suffix = String
+
+splitFilename :: String -> (String,Suffix)
splitFilename f = split_longest_prefix f '.'
-getFileSuffix :: String -> String
+getFileSuffix :: String -> Suffix
getFileSuffix f = drop_longest_prefix f '.'
-- "foo/bar/xyzzy.ext" -> ("foo/bar", "xyzzy", ".ext")
-splitFilename3 :: String -> (String,String,String)
+splitFilename3 :: String -> (String,String,Suffix)
splitFilename3 str
= let (dir, rest) = split_longest_prefix str '/'
(name, ext) = splitFilename rest
| otherwise = dir
in (real_dir, name, ext)
-remove_suffix :: Char -> String -> String
+remove_suffix :: Char -> String -> Suffix
remove_suffix c s
| null pre = reverse suf
| otherwise = reverse pre
(_:pre) -> (reverse pre, reverse suf)
where (suf,pre) = break (==c) (reverse s)
-newsuf :: String -> String -> String
+newsuf :: String -> Suffix -> String
newsuf suf s = remove_suffix '.' s ++ suf
-- getdir strips the filename off the input string, returning the directory.
remove_spaces = reverse . dropWhile isSpace . reverse . dropWhile isSpace
-ghcToolDir :: String
-prependToolDir :: String -> IO String
-#if defined(mingw32_TARGET_OS) && defined(MINIMAL_UNIX_DEPS)
-ghcToolDir = unsafePerformIO $ do
- bs <- getEnv "GHC_TOOLDIR" `IO.catch` (\ _ -> return "")
- case bs of
- "" -> return bs
- ls ->
- let
- term = last ls
- bs'
- | term `elem` ['/', '\\'] = bs
- | otherwise = bs ++ ['/']
- in
- return bs'
-
-prependToolDir x = return (dosifyPath (ghcToolDir ++ x))
-#else
-ghcToolDir = ""
-prependToolDir x = return x
-#endif
-
-appendInstallDir :: String -> IO String
-appendInstallDir cmd =
- case ghcToolDir of
- "" -> return cmd
- _ -> return (unwords [cmd, '-':'B':ghcToolDir])
-
--- convert filepath into MSDOS form.
-dosifyPath :: String -> String
-#if defined(mingw32_TARGET_OS) && defined(MINIMAL_UNIX_DEPS)
-dosifyPath stuff = subst '/' '\\' real_stuff
- where
- -- fully convince myself that /cygdrive/ prefixes cannot
- -- really appear here.
- cygdrive_prefix = "/cygdrive/"
-
- real_stuff
- | "/cygdrive/" `isPrefixOf` stuff = drop (length cygdrive_prefix) stuff
- | otherwise = stuff
-
- subst a b ls = map (\ x -> if x == a then b else x) ls
-#else
-dosifyPath x = x
-#endif
-
-#ifdef mingw32_TARGET_OS
-foreign import "_getpid" myGetProcessID :: IO Int
-#else
-myGetProcessID :: IO Int
-myGetProcessID = Posix.getProcessID
-#endif