+{-# OPTIONS -fglasgow-exts #-}
+
------------------------------------------------------------------------
--- $Id: Main.hs,v 1.36 2002/02/12 15:17:24 simonmar Exp $
+-- $Id: Main.hs,v 1.43 2002/10/29 10:50:54 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.
--
-- See the documentation in the Users' Guide for more details.
+#if __GLASGOW_HASKELL__ >= 504
+import System.Console.GetOpt
+#else
import GetOpt
+#endif
+
import Config
import System (getProgName, getArgs, ExitCode(..), exitWith, exitFailure, system)
import Directory (removeFile)
#include "../../includes/config.h"
-#ifdef mingw32_TARGET_OS
-import Win32DLL
+#ifdef mingw32_HOST_OS
+import Foreign
+
+#if __GLASGOW_HASKELL__ >= 504
+import Foreign.C.String
+#else
+import CString
+#endif
#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_TARGET_OS
- h <- getModuleHandle Nothing
- n <- getModuleFileName h
- 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 = do
- s <- readFile name
- case parser of
- Parser p -> case p (SourcePos name 1) s of
- Success _ _ _ toks -> output flags name toks
- Failure (SourcePos name' line) msg -> do
- putStrLn (name'++":"++show line++": "++msg)
- exitFailure
+processFile flags name
+ = do let file_name = dosifyPath name
+ s <- readFile file_name
+ case parser of
+ Parser p -> case p (SourcePos file_name 1) s of
+ Success _ _ _ toks -> output flags file_name toks
+ Failure (SourcePos name' line) msg -> do
+ putStrLn (name'++":"++show line++": "++msg)
+ exitFailure
------------------------------------------------------------------------
-- A deterministic parser which remembers the text which has been parsed.
_ -> return ()
removeFile oProgName
- system (execProgName++" >"++outName)
+ progStatus <- system (execProgName++" >"++outName)
removeFile progName
+ case progStatus of
+ e@(ExitFailure _) -> exitWith e
+ _ -> return ()
when needsH $ writeFile outHName $
"#ifndef "++includeGuard++"\n\
intToDigit (ord c `quot` 64),
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