-----------------------------------------------------------------------------
--- $Id: DriverUtil.hs,v 1.9 2000/11/19 19:40:08 simonmar Exp $
+-- $Id: DriverUtil.hs,v 1.15 2000/12/12 14:35:08 simonmar 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 IO
import System
+import Directory ( removeFile )
import List
import Char
import Monad
-----------------------------------------------------------------------------
-- 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 prog_name >> dump s
+ dump ('$':'$':s) = hPutStr stderr progName >> dump s
dump (c:s) = hPutChar stderr c >> dump s
-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
-
-prog_name = unsafePerformIO (getProgName)
-{-# NOINLINE prog_name #-}
-
-instance Show BarfKind where
- showsPrec _ e = showString 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"
-{-# NOINLINE barfKindTc #-}
-instance Typeable BarfKind where
- typeOf _ = mkAppTy barfKindTc []
-
-----------------------------------------------------------------------------
-- Reading OPTIONS pragmas
-----------------------------------------------------------------------------
-- 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 '.'
-- "foo/bar/xyzzy.ext" -> ("foo/bar", "xyzzy", ".ext")
splitFilename3 :: String -> (String,String,String)
splitFilename3 str
- = let dir = getdir str
- (name, ext) = splitFilename (drop (length dir) str)
- in (dir, name, ext)
+ = 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
+
+
+-- system that works feasibly under Windows (i.e. passes the command line to sh,
+-- because system() under Windows doesn't look at SHELL, and always uses CMD.EXE)
+kludgedSystem cmd phase_name
+ = do
+#ifndef mingw32_TARGET_OS
+ exit_code <- system cmd `catchAllIO`
+ (\_ -> throwDyn (PhaseFailed phase_name (ExitFailure 1)))
+#else
+ pid <- myGetProcessID
+ let tmp = "/tmp/sh" ++ show pid
+ h <- openFile tmp WriteMode
+ hPutStrLn h cmd
+ hClose h
+ exit_code <- system ("sh - " ++ tmp) `catchAllIO`
+ (\_ -> removeFile tmp >>
+ throwDyn (PhaseFailed phase_name (ExitFailure 1)))
+ removeFile tmp
+#endif
+ return exit_code