mapAndUnzip, mapAndUnzip3,
nOfThem, filterOut,
lengthExceeds, lengthIs, lengthAtLeast, listLengthCmp, atLength,
- isSingleton, only,
+ isSingleton, only, singleton,
notNull, snocView,
isIn, isn'tIn,
replaceFilenameSuffix, directoryOf, filenameOf,
replaceFilenameDirectory,
escapeSpaces, isPathSeparator,
+ parseSearchPath,
normalisePath, platformPath, pgmPath,
) where
atLen [] = EQ
atLen _ = GT
+singleton :: a -> [a]
+singleton x = [x]
+
isSingleton :: [a] -> Bool
isSingleton [x] = True
isSingleton _ = False
ch == '/'
#endif
+--------------------------------------------------------------
+-- * Search path
+--------------------------------------------------------------
+
+-- | The function splits the given string to substrings
+-- using the 'searchPathSeparator'.
+parseSearchPath :: String -> [FilePath]
+parseSearchPath path = split path
+ where
+ split :: String -> [String]
+ split s =
+ case rest' of
+ [] -> [chunk]
+ _:rest -> chunk : split rest
+ where
+ chunk =
+ case chunk' of
+#ifdef mingw32_HOST_OS
+ ('\"':xs@(_:_)) | last xs == '\"' -> init xs
+#endif
+ _ -> chunk'
+
+ (chunk', rest') = break (==searchPathSeparator) s
+
+-- | A platform-specific character used to separate search path strings in
+-- environment variables. The separator is a colon (\":\") on Unix and Macintosh,
+-- and a semicolon (\";\") on the Windows operating system.
+searchPathSeparator :: Char
+#if mingw32_HOST_OS || mingw32_TARGET_OS
+searchPathSeparator = ';'
+#else
+searchPathSeparator = ':'
+#endif
+
-----------------------------------------------------------------------------
-- Convert filepath into platform / MSDOS form.