+{-# OPTIONS -fglasgow-exts #-}
+
------------------------------------------------------------------------
--- $Id: Main.hs,v 1.41 2002/10/27 10:38:33 mthomas Exp $
+-- $Id: Main.hs,v 1.42 2002/10/28 10:11:17 simonpj Exp $
--
-- Program for converting .hsc files to .hs files, by converting the
-- file into a C program which is run to generate the Haskell source.
#include "../../includes/config.h"
#ifdef mingw32_HOST_OS
--- import Win32DLL
-import Foreign.C.String (CString, peekCString)
-import Foreign.C.Types
-import Foreign.Ptr (nullPtr)
-import Foreign.Marshal.Alloc (mallocBytes, free)
-
-foreign import stdcall "GetModuleHandle" c_GetModuleHandle :: CString -> IO CUInt
-foreign import stdcall "GetModuleFileName" c_GetModuleFilename :: CUInt -> CString -> CUInt -> IO CUInt
-
-ourName :: IO String
-ourName = do h <- c_GetModuleHandle nullPtr
- cstr <- mallocBytes cstr_len
- rv <- c_GetModuleFilename h cstr (CUInt (fromIntegral cstr_len))
- str <- peekCString cstr
- free cstr
- return str
- where cstr_len = 512
+import Foreign.C.String
+import Foreign
#endif
+
version :: String
version = "hsc2hs-0.65"
| Define String (Maybe String)
| Output String
+template_flag (Template _) = True
+template_flag _ = False
+
include :: String -> Flag
include s@('\"':_) = Include s
include s@('<' :_) = Include s
prog <- getProgName
let header = "Usage: "++prog++" [OPTIONS] INPUT.hsc [...]"
args <- getArgs
- let opts@(flags, files, errs) = getOpt Permute options args
-#ifdef mingw32_HOST_OS
- n <- ourName
- let tempName = reverse (drop (length "\\bin\\hsc2hs.exe") (reverse n)) ++ "\\template-hsc.h"
- let fflags = if [t | Template t <- flags] /= [] then flags else (Template tempName) : flags
- let opts = (fflags, files, errs)
-#endif
- case opts of
- (flags, _, _)
- | any isHelp flags -> putStrLn (usageInfo header options)
- | any isVersion flags -> putStrLn version
+ let (flags, files, errs) = getOpt Permute options args
+
+ -- If there is no Template flag explicitly specified, try
+ -- to find one by looking near the executable. This only
+ -- works on Win32 (getExecDir). On Unix, there's a wrapper
+ -- script which specifies an explicit template flag.
+ flags_w_tpl <- if any template_flag flags then
+ return flags
+ else
+ do { mb_path <- getExecDir "/bin/hsc2hs.exe" ;
+ case mb_path of
+ Nothing -> return flags
+
+ Just path -> return (Template path : flags) }
+
+ case (files, errs) of
+ (_, _)
+ | any isHelp flags_w_tpl -> putStrLn (usageInfo header options)
+ | any isVersion flags_w_tpl -> putStrLn version
where
isHelp Help = True; isHelp _ = False
isVersion Version = True; isVersion _ = False
- (_, [], []) -> putStrLn (prog++": No input files")
- (flags, files, []) -> mapM_ (processFile flags) files
- (_, _, errs) -> do
- mapM_ putStrLn errs
- putStrLn (usageInfo header options)
- exitFailure
+ ([], []) -> putStrLn (prog++": No input files")
+ (files, []) -> mapM_ (processFile flags_w_tpl) files
+ (_, errs) -> do { mapM_ putStrLn errs ;
+ putStrLn (usageInfo header options) ;
+ exitFailure }
processFile :: [Flag] -> String -> IO ()
processFile flags name
exitFailure
------------------------------------------------------------------------
--- Convert paths foo/baz to foo\baz on Windows
-
-#if defined(mingw32_HOST_OS)
-subst a b ls = map (\ x -> if x == a then b else x) ls
-dosifyPath xs = subst '/' '\\' xs
-#else
-dosifyPath xs = xs
-#endif
-
-------------------------------------------------------------------------
-- A deterministic parser which remembers the text which has been parsed.
newtype Parser a = Parser (SourcePos -> String -> ParseResult a)
intToDigit (ord c `quot` 8 `mod` 8),
intToDigit (ord c `mod` 8)]
+
+
+-----------------------------------------
+-- Cut and pasted from ghc/compiler/SysTools
+-- Convert paths foo/baz to foo\baz on Windows
+
+
+#if defined(mingw32_HOST_OS)
+subst a b ls = map (\ x -> if x == a then b else x) ls
+unDosifyPath xs = subst '\\' '/' xs
+dosifyPath xs = subst '/' '\\' xs
+
+getExecDir :: String -> IO (Maybe String)
+-- (getExecDir cmd) returns the directory in which the current
+-- executable, which should be called 'cmd', is running
+-- So if the full path is /a/b/c/d/e, and you pass "d/e" as cmd,
+-- you'll get "/a/b/c" back as the result
+getExecDir cmd
+ = allocaArray len $ \buf -> do
+ ret <- getModuleFileName nullPtr buf len
+ if ret == 0 then return Nothing
+ else do s <- peekCString buf
+ return (Just (reverse (drop (length cmd)
+ (reverse (unDosifyPath s)))))
+ where
+ len = 2048::Int -- Plenty, PATH_MAX is 512 under Win32.
+
+foreign import stdcall "GetModuleFileNameA" unsafe
+ getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
+
+#else
+dosifyPath xs = xs
+
+getExecDir :: String -> IO (Maybe String)
+getExecDir s = do return Nothing
+#endif