Commit d104c660 authored by simonpj's avatar simonpj
Browse files

[project @ 2002-10-28 10:11:17 by simonpj]

Use getExecDir, just like in ghc-pkg and SysTools
parent b918acdb
{-# 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.
......@@ -25,25 +27,11 @@ import List (intersperse)
#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"
......@@ -60,6 +48,9 @@ data Flag
| Define String (Maybe String)
| Output String
template_flag (Template _) = True
template_flag _ = False
include :: String -> Flag
include s@('\"':_) = Include s
include s@('<' :_) = Include s
......@@ -91,26 +82,33 @@ main = do
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
......@@ -123,16 +121,6 @@ processFile flags name
putStrLn (name'++":"++show line++": "++msg)
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.
......@@ -760,3 +748,39 @@ showCString = concatMap showCChar
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
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