-----------------------------------------------------------------------------
--- $Id: DriverUtil.hs,v 1.29 2002/01/22 14:47:52 simonmar Exp $
+-- $Id: DriverUtil.hs,v 1.38 2003/06/04 15:47:59 simonmar Exp $
--
-- Utils for the driver
--
import Panic
import Config ( cLeadingUnderscore )
-import IOExts
-import Exception
-import Dynamic
-import RegexString
+import EXCEPTION ( Exception(..), finally, throwDyn, catchDyn, throw )
+import qualified EXCEPTION as Exception
+import DYNAMIC
+import DATA_IOREF ( IORef, readIORef, writeIORef )
-import Directory ( getDirectoryContents )
+import Directory
import IO
import List
import Char
import Monad
-
------------------------------------------------------------------------------
--- Errors
-
-----------------------------------------------------------------------------
-- Reading OPTIONS pragmas
() | null l -> look h
| prefixMatch "#" l -> look h
| prefixMatch "{-# LINE" l -> look h -- -}
- | Just (opts:_) <- matchRegex optionRegex l
+ | Just opts <- matchOptions l
-> do rest <- look h
return (words opts ++ rest)
| otherwise -> return []
-optionRegex = mkRegex "\\{-#[ \t]+OPTIONS[ \t]+(.*)#-\\}" -- -}
+matchOptions s
+ | Just s1 <- my_prefix_match "{-#" s, -- -}
+ Just s2 <- my_prefix_match "OPTIONS" (remove_spaces s1),
+ Just s3 <- my_prefix_match "}-#" (reverse s2)
+ = Just (reverse s3)
+ | otherwise
+ = Nothing
-----------------------------------------------------------------------------
-- A version of getDirectoryContents that is non-fatal if the
)
-----------------------------------------------------------------------------
+-- Create a hierarchy of directories
+
+createDirectoryHierarchy :: FilePath -> IO ()
+createDirectoryHierarchy dir = do
+ b <- doesDirectoryExist dir
+ when (not b) $ do
+ createDirectoryHierarchy (directoryOf dir)
+ createDirectory dir
+
+-----------------------------------------------------------------------------
+-- Verify that the 'dirname' portion of a FilePath exists.
+--
+doesDirNameExist :: FilePath -> IO Bool
+doesDirNameExist fpath = doesDirectoryExist (directoryOf fpath)
+
+-----------------------------------------------------------------------------
-- Prefixing underscore to linker-level names
prefixUnderscore :: String -> String
prefixUnderscore
unknownFlagErr :: String -> a
unknownFlagErr f = throwDyn (UsageError ("unrecognised flag: " ++ f))
+unknownFlagsErr :: [String] -> a
+unknownFlagsErr fs = throwDyn (UsageError ("unrecognised flags: " ++ unwords fs))
+
my_partition :: (a -> Maybe b) -> [a] -> ([(a,b)],[a])
my_partition _ [] = ([],[])
my_partition p (a:as)
getFileSuffix :: String -> Suffix
getFileSuffix f = drop_longest_prefix f (=='.')
+-- "foo/bar/xyzzy.ext" -> ("foo/bar", "xyzzy.ext")
+splitFilenameDir :: String -> (String,String)
+splitFilenameDir str
+ = let (dir, rest) = split_longest_prefix str isPathSeparator
+ real_dir | null dir = "."
+ | otherwise = dir
+ in (real_dir, rest)
+
-- "foo/bar/xyzzy.ext" -> ("foo/bar", "xyzzy", ".ext")
splitFilename3 :: String -> (String,String,Suffix)
splitFilename3 str
(_:pre) -> (reverse pre, reverse suf)
where (suf,pre) = break pred (reverse s)
-newsuf :: String -> Suffix -> String
-newsuf suf s = remove_suffix '.' s ++ suf
+replaceFilenameSuffix :: FilePath -> Suffix -> FilePath
+replaceFilenameSuffix s suf = remove_suffix '.' s ++ suf
--- getdir strips the filename off the input string, returning the directory.
-getdir :: String -> String
-getdir s = if null dir then "." else init dir
- where dir = take_longest_prefix s isPathSeparator
+-- directoryOf strips the filename off the input string, returning
+-- the directory.
+directoryOf :: FilePath -> String
+directoryOf = fst . splitFilenameDir
-newdir :: String -> String -> String
-newdir dir s = dir ++ '/':drop_longest_prefix s isPathSeparator
+replaceFilenameDirectory :: FilePath -> String -> FilePath
+replaceFilenameDirectory s dir
+ = dir ++ '/':drop_longest_prefix s isPathSeparator
remove_spaces :: String -> String
remove_spaces = reverse . dropWhile isSpace . reverse . dropWhile isSpace
+escapeSpaces :: String -> String
+escapeSpaces = foldr (\c s -> if isSpace c then '\\':c:s else c:s) ""
+
isPathSeparator :: Char -> Bool
isPathSeparator ch =
#ifdef mingw32_TARGET_OS