-----------------------------------------------------------------------------
--- $Id: DriverUtil.hs,v 1.5 2000/10/27 13:50:25 sewardj Exp $
+-- $Id: DriverUtil.hs,v 1.22 2001/05/28 03:31:19 sof Exp $
--
-- Utils for the driver
--
module DriverUtil where
+#include "../includes/config.h"
#include "HsVersions.h"
-import Config
import Util
+import Panic
import IOExts
import Exception
import Dynamic
import RegexString
+import Directory ( getDirectoryContents )
import IO
import System
import List
import Char
import Monad
+#ifndef mingw32_TARGET_OS
+import Posix
+#endif
+
-----------------------------------------------------------------------------
-- Errors
-short_usage = "Usage: For basic information, try the `--help' option."
-
GLOBAL_VAR(v_Path_usage, "", String)
long_usage = do
exitWith ExitSuccess
where
dump "" = return ()
- dump ('$':'$':s) = hPutStr stderr get_prog_name >> dump s
+ dump ('$':'$':s) = hPutStr stderr progName >> dump s
dump (c:s) = hPutChar stderr c >> dump s
-version_str = cProjectVersion
-
-data BarfKind
- = PhaseFailed String ExitCode
- | Interrupted
- | UsageError String -- prints the short usage msg after the error
- | OtherError String -- just prints the error message
- deriving Eq
-
-GLOBAL_VAR(v_Prog_name, "ghc", String)
-
-get_prog_name = unsafePerformIO (readIORef v_Prog_name) -- urk!
-
-instance Show BarfKind where
- showsPrec _ e = showString get_prog_name . showString ": " . showBarf e
-
-showBarf (UsageError str) = showString str . showChar '\n' . showString short_usage
-showBarf (OtherError str) = showString str
-showBarf (PhaseFailed phase code) =
- showString phase . showString " failed, code = " . shows code
-showBarf (Interrupted) = showString "interrupted"
-
-unknownFlagErr f = throwDyn (UsageError ("unrecognised flag: " ++ f))
-
-barfKindTc = mkTyCon "BarfKind"
-instance Typeable BarfKind where
- typeOf _ = mkAppTy barfKindTc []
-
-----------------------------------------------------------------------------
-- Reading OPTIONS pragmas
+
getOptionsFromSource
:: String -- input file
-> IO [String] -- options, if any
| prefixMatch "#" l -> look h
| prefixMatch "{-# LINE" l -> look h -- -}
| Just (opts:_) <- matchRegex optionRegex l
- -> return (words opts)
+ -> do rest <- look h
+ return (words opts ++ rest)
| otherwise -> return []
optionRegex = mkRegex "\\{-#[ \t]+OPTIONS[ \t]+(.*)#-\\}" -- -}
-----------------------------------------------------------------------------
+-- A version of getDirectoryContents that is non-fatal if the
+-- directory doesn't exist.
+
+softGetDirectoryContents d
+ = IO.catch (getDirectoryContents d)
+ (\_ -> do hPutStr stderr
+ ("WARNING: error while reading directory " ++ d)
+ return []
+ )
+
+-----------------------------------------------------------------------------
-- Utils
+unknownFlagErr :: String -> a
+unknownFlagErr f = throwDyn (UsageError ("unrecognised flag: " ++ f))
+
my_partition :: (a -> Maybe b) -> [a] -> ([(a,b)],[a])
my_partition _ [] = ([],[])
my_partition p (a:as)
handleDyn :: Typeable ex => (ex -> IO a) -> IO a -> IO a
handleDyn = flip catchDyn
+handle :: (Exception -> IO a) -> IO a -> IO a
+handle = flip Exception.catchAllIO
+
split :: Char -> String -> [String]
split c s = case rest of
[] -> [chunk]
unless (x `elem` xs) $ writeIORef var (x:xs)
splitFilename :: String -> (String,String)
-splitFilename f = (reverse (stripDot rev_basename), reverse rev_ext)
- where (rev_ext, rev_basename) = span ('.' /=) (reverse f)
- stripDot ('.':xs) = xs
- stripDot xs = xs
+splitFilename f = split_longest_prefix f '.'
+
+getFileSuffix :: String -> String
+getFileSuffix f = drop_longest_prefix f '.'
+
+-- "foo/bar/xyzzy.ext" -> ("foo/bar", "xyzzy", ".ext")
+splitFilename3 :: String -> (String,String,String)
+splitFilename3 str
+ = let (dir, rest) = split_longest_prefix str '/'
+ (name, ext) = splitFilename rest
+ real_dir | null dir = "."
+ | otherwise = dir
+ in (real_dir, name, ext)
remove_suffix :: Char -> String -> String
remove_suffix c s
take_longest_prefix s c = reverse pre
where (_suf,pre) = break (==c) (reverse s)
+-- split a string at the last occurence of 'c', returning the two
+-- parts of the string with the 'c' removed. If the string contains
+-- no 'c's, the entire string is returned in the second component.
+split_longest_prefix :: String -> Char -> (String,String)
+split_longest_prefix s c
+ = case pre of
+ [] -> ([], reverse suf)
+ (_:pre) -> (reverse pre, reverse suf)
+ where (suf,pre) = break (==c) (reverse s)
+
newsuf :: String -> String -> String
newsuf suf s = remove_suffix '.' s ++ suf
remove_spaces :: String -> String
remove_spaces = reverse . dropWhile isSpace . reverse . dropWhile isSpace
-booter_version
- = case "\
- \ __GLASGOW_HASKELL__" of
- ' ':n:ns -> n:'.':ns
- ' ':m -> m
+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
projects / ghc-hetmet.git / blobdiff