+{-# OPTIONS -fglasgow-exts #-}
+
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.27 2002/09/09 11:32:37 simonmar Exp $
+-- $Id: Main.hs,v 1.28 2002/09/13 15:01:40 simonpj Exp $
--
-- Package management tool
-----------------------------------------------------------------------------
#include "../../includes/config.h"
#ifdef mingw32_HOST_OS
-import Win32DLL
+import CString
+import Foreign
#endif
main = do
#endif
runit clis = do
+ let err_msg = "missing -f option, location of package.conf unknown"
conf_file <-
case [ f | Config f <- clis ] of
fs@(_:_) -> return (last fs)
#ifndef mingw32_HOST_OS
- [] -> die "missing -f option, location of package.conf unknown"
+ [] -> die err_msg
#else
- [] -> do h <- getModuleHandle Nothing
- n <- getModuleFileName h
- return (reverse (drop (length "/bin/ghc-pkg.exe") (reverse (unDosifyPath n))) ++ "/package.conf")
+ [] -> do mb_dir <- getExecDir "/bin/ghc-pkg.exe"
+ case mb_dir of
+ Nothing -> die err_msg
+ Just dir -> return (dir ++ "/package.conf")
#endif
let toField "import_dirs" = return import_dirs
[] -> die ("can't find package `" ++ pkg_name ++ "'")
[pkg] | null fields -> hPutStrLn stdout (render (dumpPkgGuts pkg))
| otherwise -> hPutStrLn stdout (render (vcat
- (map (vcat . map text) (map ($pkg) fields))))
+ (map (vcat . map text) (map ($ pkg) fields))))
_ -> die "showPackage: internal error"
addPackage :: [PackageConfig] -> FilePath -> FilePath
#endif
#endif
+
+-----------------------------------------
+-- Cut and pasted from ghc/compiler/SysTools
+
+#if defined(mingw32_HOST_OS)
+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
+getExecDir :: String -> IO (Maybe String)
+getExecDir s = do return Nothing
+#endif