{-# OPTIONS -fglasgow-exts #-}
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.36 2003/09/08 17:55:40 sof Exp $
---
-- Package management tool
-----------------------------------------------------------------------------
import Monad
import Directory
-import System ( getEnv, getArgs,
+import System ( getEnv, getArgs, getProgName,
system, exitWith,
ExitCode(..)
)
import IO
-import List ( isPrefixOf )
+import List ( isPrefixOf, isSuffixOf )
import ParsePkgConfLite
#endif
#endif
+main :: IO ()
main = do
args <- getArgs
case getOpt Permute flags args of
- (clis@(_:_),[],[]) -> runit clis
- (_,_,errors) -> die (concat errors ++
- usageInfo usageHeader flags)
+ (cli,_,[]) | DumpHelp `elem` cli -> do
+ prog <- getProgramName
+ bye (usageInfo (usageHeader prog) flags)
+ (cli,_,[]) | DumpVersion `elem` cli ->
+ bye copyright
+ (cli@(_:_),[],[]) ->
+ runit cli
+ (_,_,errors) -> do
+ prog <- getProgramName
+ die (concat errors ++ usageInfo (usageHeader prog) flags)
data Flag
= Config FilePath
| Remove String | Show String
| Field String | AutoGHCiLibs | Force
| DefinedName String String
+ | DumpHelp
+ | DumpVersion
deriving (Eq)
+isAction :: Flag -> Bool
isAction (Config _) = False
isAction (Field _) = False
isAction (Input _) = False
isAction DefinedName{} = False
isAction _ = True
-usageHeader = "ghc-pkg [OPTION...]"
+copyright :: String
+copyright = "GHC package manager version " ++ version ++ "\n"
+-- hackery to convice cpp to splice GHC_PKG_VERSION into a string
+version :: String
+version = tail "\
+ \ GHC_PKG_VERSION"
+
+usageHeader :: String -> String
+usageHeader prog = "Usage: " ++ prog ++ " [OPTION...]\n"
+
+flags :: [OptDescr Flag]
flags = [
Option ['f'] ["config-file"] (ReqArg Config "FILE")
- "Use the specified package config file",
+ "use the specified package config file",
Option ['l'] ["list-packages"] (NoArg List)
- "List packages in all config files",
+ "list packages in all config files",
Option ['L'] ["list-local-packages"] (NoArg ListLocal)
- "List packages in the specified config file",
+ "list packages in the specified config file",
Option ['a'] ["add-package"] (NoArg (Add False))
- "Add a new package",
+ "add a new package",
Option ['u'] ["update-package"] (NoArg (Add True))
- "Update package with new configuration",
+ "update package with new configuration",
Option ['i'] ["input-file"] (ReqArg Input "FILE")
- "Read new package info from specified file",
+ "read new package info from specified file",
Option ['s'] ["show-package"] (ReqArg Show "NAME")
- "Show the configuration for package NAME",
+ "show the configuration for package NAME",
Option [] ["field"] (ReqArg Field "FIELD")
"(with --show-package) Show field FIELD only",
Option [] ["force"] (NoArg Force)
"ignore missing directories/libraries",
Option ['r'] ["remove-package"] (ReqArg Remove "NAME")
- "Remove an installed package",
+ "remove an installed package",
Option ['g'] ["auto-ghci-libs"] (NoArg AutoGHCiLibs)
- "Automatically build libs for GHCi (with -a)",
+ "automatically build libs for GHCi (with -a)",
Option ['D'] ["define-name"] (ReqArg toDefined "NAME=VALUE")
- "Define NAME as VALUE"
+ "define NAME as VALUE",
+ Option ['?'] ["help"] (NoArg DumpHelp)
+ "display this help and exit",
+ Option ['V'] ["version"] (NoArg DumpVersion)
+ "output version information and exit"
]
where
toDefined str =
(nm,[]) -> DefinedName nm []
(nm,_:val) -> DefinedName nm val
+runit :: [Flag] -> IO ()
runit clis = do
- let err_msg = "missing -f option, location of package.conf unknown"
+ let err_msg = "missing -f option, location of package.conf unknown\n"
conf_filenames <-
case [ f | Config f <- clis ] of
fs@(_:_) -> return (reverse fs) -- NOTE reverse
toField "extra_ld_opts" = return extra_ld_opts
toField "framework_dirs" = return framework_dirs
toField "extra_frameworks"= return extra_frameworks
- toField s = die ("unknown field: `" ++ s ++ "'")
+ toField s = die ("unknown field: `" ++ s ++ "'\n")
fields <- mapM toField [ f | Field f <- clis ]
str <- readFile filename
let packages = parsePackageConfig str
eval_catch packages
- (\_ -> die (filename ++ ": parse error in package config file"))
+ (\_ -> die (filename ++ ": parse error in package config file\n"))
pkg_confs <- mapM read_parse_conf conf_filenames
auto_ghci_libs upd force
[ Remove p ] -> removePackage pkg_confs conf_filename p
[ Show p ] -> showPackage pkg_confs conf_filename p fields
- _ -> die (usageInfo usageHeader flags)
+ _ -> do prog <- getProgramName
+ die (usageInfo (usageHeader prog) flags)
listPackages :: [[PackageConfig]] -> [FilePath] -> IO ()
-> String
-> [PackageConfig -> [String]]
-> IO ()
-showPackage pkg_confs filename pkg_name fields =
+showPackage pkg_confs _ pkg_name fields =
case [ p | pkgs <- pkg_confs, p <- pkgs, name p == pkg_name ] of
- [] -> die ("can't find package `" ++ pkg_name ++ "'")
+ [] -> die ("can't find package `" ++ pkg_name ++ "'\n")
[pkg] | null fields -> hPutStrLn stdout (render (dumpPkgGuts pkg))
| otherwise -> hPutStrLn stdout (render (vcat
(map (vcat . map text) (map ($ pkg) fields))))
- _ -> die "showPackage: internal error"
+ _ -> die "showPackage: internal error\n"
addPackage :: [[PackageConfig]] -> [(String, String)]
-> FilePath -> FilePath
hPutStr stdout ("Reading package info from " ++ show f)
readFile f
let new_pkg = parseOnePackageConfig s
- eval_catch new_pkg (\_ -> die "parse error in package info")
+ eval_catch new_pkg (\_ -> die "parse error in package info\n")
hPutStrLn stdout "done."
hPutStr stdout "Expanding embedded variables... "
new_exp_pkg <- expandEnvVars new_pkg defines force
removePackage (packages : _) filename pkgName = do
checkConfigAccess filename
when (pkgName `notElem` map name packages)
- (die (filename ++ ": package `" ++ pkgName ++ "' not found"))
+ (die (filename ++ ": package `" ++ pkgName ++ "' not found\n"))
savePackageConfig filename
maybeRestoreOldConfig filename $
writeNewConfig filename (filter ((/= pkgName) . name) packages)
checkConfigAccess filename = do
access <- getPermissions filename
when (not (writable access))
- (die (filename ++ ": you don't have permission to modify this file"))
+ (die (filename ++ ": you don't have permission to modify this file\n"))
maybeRestoreOldConfig :: FilePath -> IO () -> IO ()
maybeRestoreOldConfig filename io
-> IO [PackageConfig]
validatePackageConfig pkg pkg_confs@(pkgs:_) auto_ghci_libs updatePkg force = do
when (not updatePkg && (name pkg `elem` map name pkgs))
- (die ("package `" ++ name pkg ++ "' is already installed"))
+ (die ("package `" ++ name pkg ++ "' is already installed\n"))
mapM_ (checkDep pkg_confs force) (package_deps pkg)
mapM_ (checkDir force) (import_dirs pkg)
mapM_ (checkDir force) (source_dirs pkg)
| otherwise = pkgs
return (existing_pkgs ++ [pkg])
+checkDir :: Bool -> String -> IO ()
checkDir force d
| "$libdir" `isPrefixOf` d = return ()
-- can't check this, because we don't know what $libdir is
| otherwise = do
there <- doesDirectoryExist d
when (not there)
- (dieOrForce force ("`" ++ d ++ "' doesn't exist or isn't a directory"))
+ (dieOrForce force ("`" ++ d ++ "' doesn't exist or isn't a directory\n"))
checkDep :: [[PackageConfig]] -> Bool -> String -> IO ()
checkDep pkgs force n
| n `elem` pkg_names = return ()
- | otherwise = dieOrForce force ("dependency `" ++ n ++ "' doesn't exist")
+ | otherwise = dieOrForce force ("dependency `" ++ n ++ "' doesn't exist\n")
where
pkg_names = concat (map (map name) pkgs)
"' on library path")
(dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
+doesLibExistIn :: String -> String -> IO Bool
doesLibExistIn lib d
| "$libdir" `isPrefixOf` d = return True
| otherwise = doesFileExist (d ++ '/':lib)
checkGHCiLib :: [String] -> String -> String -> String -> Bool -> IO ()
checkGHCiLib dirs batch_lib_dir batch_lib_file lib auto_build = do
let ghci_lib_file = lib ++ ".o"
- ghci_lib_path = batch_lib_dir ++ '/':ghci_lib_file
bs <- mapM (\d -> doesFileExist (d ++ '/':ghci_lib_file)) dirs
case [ dir | (exists,dir) <- zip bs dirs, exists ] of
[] | auto_build ->
| otherwise ->
hPutStrLn stderr ("warning: can't find GHCi lib `"
++ ghci_lib_file ++ "'")
- (dir:_) -> return ()
+ (_:_) -> return ()
-- automatically build the GHCi version of a batch lib,
-- using ld --whole-archive.
+autoBuildGHCiLib :: String -> String -> String -> IO ()
autoBuildGHCiLib dir batch_file ghci_file = do
let ghci_lib_file = dir ++ '/':ghci_file
batch_lib_file = dir ++ '/':batch_file
, extra_frameworks= e_frames
})
where
- expandStrings = mapM expandString
-
- -- Just for fun, keep this in the IO monad.
+ expandStrings :: [String] -> IO [String]
+ expandStrings = liftM concat . mapM expandSpecial
+
+ -- Permit substitutions for list-valued variables (but only when
+ -- they occur alone), e.g., package_deps["${deps}"] where env var
+ -- (say) 'deps' is "base,haskell98,network"
+ expandSpecial :: String -> IO [String]
+ expandSpecial str =
+ let expand f = liftM f $ expandString str
+ in case splitString str of
+ [Var _] -> expand (wordsBy (== ','))
+ _ -> expand (\x -> [x])
+
expandString :: String -> IO String
- expandString str =
- case break (=='$') str of
- (xs, _:'{':rs) ->
- case span (/='}') rs of
- (nm,_:remainder) -> do
- nm' <- lookupEnvVar nm
- str' <- expandString remainder
- return (xs ++ nm' ++ str')
- _ -> return str -- no closing '}'
- _ -> return str
+ expandString = liftM concat . mapM expandElem . splitString
+
+ expandElem :: Elem -> IO String
+ expandElem (String s) = return s
+ expandElem (Var v) = lookupEnvVar v
+ lookupEnvVar :: String -> IO String
lookupEnvVar nm =
case lookup nm defines of
Just x | not (null x) -> return x
show nm)
return "")
+data Elem = String String | Var String
+
+splitString :: String -> [Elem]
+splitString "" = []
+splitString str =
+ case break (== '$') str of
+ (pre, _:'{':xs) ->
+ case span (/= '}') xs of
+ (var, _:suf) ->
+ (if null pre then id else (String pre :)) (Var var : splitString suf)
+ _ -> [String str] -- no closing brace
+ _ -> [String str] -- no dollar/opening brace combo
+
+-- wordsBy isSpace == words
+wordsBy :: (Char -> Bool) -> String -> [String]
+wordsBy p s = case dropWhile p s of
+ "" -> []
+ s' -> w : wordsBy p s'' where (w,s'') = break p s'
+
-----------------------------------------------------------------------------
+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 = do { hFlush stdout ; hPutStrLn stderr s; exitWith (ExitFailure 1) }
+die s = do { hFlush stdout ; hPutStr stderr s; exitWith (ExitFailure 1) }
dieOrForce :: Bool -> String -> IO ()
dieOrForce force s
| force = do hFlush stdout; hPutStrLn stderr (s ++ " (ignoring)")
- | otherwise = die s
+ | otherwise = die (s ++ "\n")
-----------------------------------------------------------------------------
-- Exceptions
getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
#else
getExecDir :: String -> IO (Maybe String)
-getExecDir s = do return Nothing
+getExecDir _ = return Nothing
#endif
projects / ghc-hetmet.git / blobdiff