+{-# OPTIONS -fglasgow-exts #-}
+
------------------------------------------------------------------------
--- $Id: Main.hs,v 1.33 2001/09/12 11:16:05 rrt Exp $
+-- $Id: Main.hs,v 1.51 2004/02/09 15:04:19 malcolm 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 || __NHC__ >= 114
+import System.Console.GetOpt
+#else
import GetOpt
-import System (getProgName, getArgs, ExitCode(..), exitWith, exitFailure)
-import KludgedSystem
-import Directory (removeFile)
+#endif
+
+import System (getProgName, getArgs, ExitCode(..), exitWith, system)
+import Directory (removeFile,doesFileExist)
import Monad (MonadPlus(..), liftM, liftM2, when, unless)
import Char (isAlpha, isAlphaNum, isSpace, isDigit, toUpper, intToDigit, ord)
-import List (intersperse)
-
-#include "../../includes/config.h"
-
-#ifdef mingw32_TARGET_OS
-import Win32DLL
+import List (intersperse, isSuffixOf)
+import IO (hPutStr, hPutStrLn, stderr)
+
+#if defined(mingw32_HOST_OS)
+import Foreign
+#if __GLASGOW_HASKELL__ >= 504 || __NHC__ >= 114
+import Foreign.C.String
+#else
+import CString
#endif
+#endif
+
version :: String
-version = "hsc2hs-0.65"
+version = "hsc2hs version 0.66\n"
data Flag
= Help
| Include String
| Define String (Maybe String)
| Output String
+ | Verbose
+
+template_flag :: Flag -> Bool
+template_flag (Template _) = True
+template_flag _ = False
include :: String -> Flag
include s@('\"':_) = Include s
options :: [OptDescr Flag]
options = [
- Option "t" ["template"] (ReqArg Template "FILE") "template file",
- Option "c" ["cc"] (ReqArg Compiler "PROG") "C compiler to use",
- Option "l" ["ld"] (ReqArg Linker "PROG") "linker to use",
- Option "C" ["cflag"] (ReqArg CompFlag "FLAG") "flag to pass to the C compiler",
- Option "I" [] (ReqArg (CompFlag . ("-I"++))
- "DIR") "passed to the C compiler",
- Option "L" ["lflag"] (ReqArg LinkFlag "FLAG") "flag to pass to the linker",
- Option "i" ["include"] (ReqArg include "FILE") "as if placed in the source",
- Option "D" ["define"] (ReqArg define "NAME[=VALUE]") "as if placed in the source",
- Option "o" ["output"] (ReqArg Output "FILE") "name of main output file",
- Option "" ["help"] (NoArg Help) "display this help and exit",
- Option "" ["version"] (NoArg Version) "output version information and exit",
- Option "" ["no-compile"] (NoArg NoCompile) "stop after writing *_hsc_make.c"]
+ Option ['o'] ["output"] (ReqArg Output "FILE")
+ "name of main output file",
+ Option ['t'] ["template"] (ReqArg Template "FILE")
+ "template file",
+ Option ['c'] ["cc"] (ReqArg Compiler "PROG")
+ "C compiler to use",
+ Option ['l'] ["ld"] (ReqArg Linker "PROG")
+ "linker to use",
+ Option ['C'] ["cflag"] (ReqArg CompFlag "FLAG")
+ "flag to pass to the C compiler",
+ Option ['I'] [] (ReqArg (CompFlag . ("-I"++)) "DIR")
+ "passed to the C compiler",
+ Option ['L'] ["lflag"] (ReqArg LinkFlag "FLAG")
+ "flag to pass to the linker",
+ Option ['i'] ["include"] (ReqArg include "FILE")
+ "as if placed in the source",
+ Option ['D'] ["define"] (ReqArg define "NAME[=VALUE]")
+ "as if placed in the source",
+ Option [] ["no-compile"] (NoArg NoCompile)
+ "stop after writing *_hsc_make.c",
+ Option ['v'] ["verbose"] (NoArg Verbose)
+ "dump commands to stderr",
+ Option ['?'] ["help"] (NoArg Help)
+ "display this help and exit",
+ Option ['V'] ["version"] (NoArg Version)
+ "output version information and exit" ]
+
main :: IO ()
main = do
- prog <- getProgName
- let header = "Usage: "++prog++" [OPTIONS] INPUT.hsc [...]"
+ prog <- getProgramName
+ let header = "Usage: "++prog++" [OPTIONS] INPUT.hsc [...]\n"
args <- getArgs
-#ifdef mingw32_TARGET_OS
- h <- getModuleHandle Nothing
- n <- getModuleFileName h
- let tempName = reverse (drop (length "\\bin\\hsc2hs.exe") (reverse n)) ++ "\\template-hsc.h"
-#endif
let (flags, files, errs) = getOpt Permute options args
- let fflags = if [t | Template t <- flags] /= [] then flags else (Template tempName) : flags
- let opts = (fflags, files, errs)
- case opts of
- (flags, _, _)
- | any isHelp flags -> putStrLn (usageInfo header options)
- | any isVersion flags -> putStrLn version
+
+ -- 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"
+ add_opt <-
+ case mb_path of
+ Nothing -> return id
+ Just path -> do
+ let templ = path ++ "/template-hsc.h"
+ flg <- doesFileExist templ
+ if flg
+ then return ((Template templ):)
+ else return id
+ return (add_opt flags)
+ case (files, errs) of
+ (_, _)
+ | any isHelp flags_w_tpl -> bye (usageInfo header options)
+ | any isVersion flags_w_tpl -> bye 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
+ ((_:_), []) -> mapM_ (processFile flags_w_tpl) files
+ (_, _ ) -> die (concat errs ++ usageInfo header options)
+
+getProgramName :: IO String
+getProgramName = liftM (`withoutSuffix` "-bin") getProgName
+ where str `withoutSuffix` suff
+ | suff `isSuffixOf` str = take (length str - length suff) str
+ | otherwise = str
+
+bye :: String -> IO a
+bye s = putStr s >> exitWith ExitSuccess
+
+die :: String -> IO a
+die s = hPutStr stderr s >> exitWith (ExitFailure 1)
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 ->
+ die (name'++":"++show line++": "++msg++"\n")
------------------------------------------------------------------------
-- A deterministic parser which remembers the text which has been parsed.
let cProgName = outDir++outBase++"_hsc_make.c"
oProgName = outDir++outBase++"_hsc_make.o"
- progName = outDir++outBase++"_hsc_make" ++ progNameSuffix
- outHName = outDir++outBase++"_hsc.h"
+ progName = outDir++outBase++"_hsc_make" ++ EXEEXT
+ outHFile = outBase++"_hsc.h"
+ outHName = outDir++outHFile
outCName = outDir++outBase++"_hsc.c"
+
+ beVerbose = any (\ x -> case x of { Verbose{} -> True; _ -> False}) flags
let execProgName
- | null outDir = "./"++progName
+ | null outDir = dosifyPath ("./" ++ progName)
| otherwise = progName
let specials = [(pos, key, arg) | Special pos key arg <- toks]
where
fixChar c | isAlphaNum c = toUpper c
| otherwise = '_'
+
+ -- try locating GHC..on Win32, look in the vicinity of hsc2hs.
+ locateGhc def = do
+ mb <- getExecDir "bin/hsc2hs.exe"
+ case mb of
+ Nothing -> return def
+ Just x -> do
+ let ghc_path = dosifyPath (x ++ "bin/ghc.exe")
+ flg <- doesFileExist ghc_path
+ if flg
+ then return ghc_path
+ else return def
compiler <- case [c | Compiler c <- flags] of
- [] -> return "ghc"
+ [] -> locateGhc "ghc"
[c] -> return c
_ -> onlyOne "compiler"
linker <- case [l | Linker l <- flags] of
- [] -> return defaultCompiler
+ [] -> locateGhc compiler
[l] -> return l
_ -> onlyOne "linker"
-
+
writeFile cProgName $
concatMap outFlagHeaderCProg flags++
concatMap outHeaderCProg specials++
- "\nint main (void)\n{\n"++
+ "\nint main (int argc, char *argv [])\n{\n"++
outHeaderHs flags (if needsH then Just outHName else Nothing) specials++
outHsLine (SourcePos name 0)++
concatMap outTokenHs toks++
" return 0;\n}\n"
unless (null [() | NoCompile <- flags]) $ exitWith ExitSuccess
+
+
- compilerStatus <- system $
+ compilerStatus <- systemL beVerbose $
compiler++
" -c"++
concat [" "++f | CompFlag f <- flags]++
_ -> return ()
removeFile cProgName
- linkerStatus <- system $
+ linkerStatus <- systemL beVerbose $
linker++
concat [" "++f | LinkFlag f <- flags]++
" "++oProgName++
_ -> return ()
removeFile oProgName
- system (execProgName++" >"++outName)
+ progStatus <- systemL beVerbose (execProgName++" >"++outName)
removeFile progName
+ case progStatus of
+ e@(ExitFailure _) -> exitWith e
+ _ -> return ()
when needsH $ writeFile outHName $
"#ifndef "++includeGuard++"\n\
"#endif\n"
when needsC $ writeFile outCName $
- "#include \""++outHName++"\"\n"++
+ "#include \""++outHFile++"\"\n"++
concatMap outTokenC specials
+ -- NB. outHFile not outHName; works better when processed
+ -- by gcc or mkdependC.
+
+systemL :: Bool -> String -> IO ExitCode
+systemL flg s = do
+ when flg (hPutStrLn stderr ("Executing: " ++ s))
+ system s
onlyOne :: String -> IO a
-onlyOne what = do
- putStrLn ("Only one "++what++" may be specified")
- exitFailure
+onlyOne what = die ("Only one "++what++" may be specified\n")
outFlagHeaderCProg :: Flag -> String
outFlagHeaderCProg (Template t) = "#include \""++t++"\"\n"
showCString s++"\");\n"
outTokenHs :: Token -> String
-outTokenHs (Text pos text) =
- case break (== '\n') text of
- (all, []) -> outText all
+outTokenHs (Text pos txt) =
+ case break (== '\n') txt of
+ (allTxt, []) -> outText allTxt
(first, _:rest) ->
outText (first++"\n")++
outHsLine pos++
outCLine :: SourcePos -> String
outCLine (SourcePos name line) =
- "# "++show line++" \""++showCString (snd (splitName name))++"\"\n"
+ "#line "++show line++" \""++showCString (snd (splitName name))++"\"\n"
outHsLine :: SourcePos -> String
outHsLine (SourcePos name line) =
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
+
+dosifyPath :: String -> String
+#if defined(mingw32_HOST_OS)
+dosifyPath xs = subst '/' '\\' xs
+
+unDosifyPath :: String -> String
+unDosifyPath xs = subst '\\' '/' xs
+
+subst :: Eq a => a -> a -> [a] -> [a]
+subst a b ls = map (\ x -> if x == a then b else x) ls
+
+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 _ = return Nothing
+#endif
projects / ghc-hetmet.git / blobdiff