{-# OPTIONS -fglasgow-exts #-}
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.31 2002/10/29 10:53:42 simonpj 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
| Input FilePath
- | List | Add Bool {- True => replace existing info -}
+ | List
+ | ListLocal
+ | Add Bool {- True => replace existing info -}
| 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 (AutoGHCiLibs) = False
isAction (Force) = 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 the currently installed packages",
+ "list packages in all config files",
+ Option ['L'] ["list-local-packages"] (NoArg ListLocal)
+ "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",
+ Option ['?'] ["help"] (NoArg DumpHelp)
+ "display this help and exit",
+ Option ['V'] ["version"] (NoArg DumpVersion)
+ "output version information and exit"
]
+ where
+ toDefined str =
+ case break (=='=') str of
+ (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"
- conf_file <-
+ let err_msg = "missing -f option, location of package.conf unknown\n"
+ conf_filenames <-
case [ f | Config f <- clis ] of
- fs@(_:_) -> return (last fs)
+ fs@(_:_) -> return (reverse fs) -- NOTE reverse
[] -> do mb_dir <- getExecDir "/bin/ghc-pkg.exe"
case mb_dir of
Nothing -> die err_msg
- Just dir -> return (dir ++ "/package.conf")
+ Just dir -> return [dir ++ "/package.conf"]
let toField "import_dirs" = return import_dirs
toField "source_dirs" = return source_dirs
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 ]
- s <- readFile conf_file
- let packages = parsePackageConfig s
- eval_catch packages (\_ -> die "parse error in package config file")
+ let read_parse_conf filename = do
+ str <- readFile filename
+ let packages = parsePackageConfig str
+ eval_catch packages
+ (\_ -> die (filename ++ ": parse error in package config file\n"))
+
+ pkg_confs <- mapM read_parse_conf conf_filenames
+
+ let conf_filename = head conf_filenames
+ -- this is the file we're going to update: the last one specified
+ -- on the command-line.
let auto_ghci_libs = any isAuto clis
where isAuto AutoGHCiLibs = True; isAuto _ = False
input_file = head ([ f | (Input f) <- clis] ++ ["-"])
force = Force `elem` clis
+
+ defines = [ (nm,val) | DefinedName nm val <- clis ]
case [ c | c <- clis, isAction c ] of
- [ List ] -> listPackages packages
- [ Add upd ] -> addPackage packages conf_file input_file
- auto_ghci_libs upd force
- [ Remove p ] -> removePackage packages conf_file p
- [ Show p ] -> showPackage packages conf_file p fields
- _ -> die (usageInfo usageHeader flags)
-
-
-listPackages :: [PackageConfig] -> IO ()
-listPackages packages = hPutStrLn stdout (listPkgs packages)
+ [ List ] -> listPackages pkg_confs conf_filenames
+ [ ListLocal ] -> listPackages [head pkg_confs] [""]
+ [ Add upd ] -> addPackage pkg_confs defines
+ conf_filename input_file
+ auto_ghci_libs upd force
+ [ Remove p ] -> removePackage pkg_confs conf_filename p
+ [ Show p ] -> showPackage pkg_confs conf_filename p fields
+ _ -> do prog <- getProgramName
+ die (usageInfo (usageHeader prog) flags)
+
+
+listPackages :: [[PackageConfig]] -> [FilePath] -> IO ()
+listPackages pkg_confs conf_filenames = do
+ zipWithM_ show_pkgconf pkg_confs conf_filenames
+ where show_pkgconf pkg_conf filename =
+ hPutStrLn stdout (render $
+ if null filename
+ then packages
+ else text (filename ++ ":") $$ nest 4 packages
+ )
+ where packages = fsep (punctuate comma (map (text . name) pkg_conf))
-showPackage :: [PackageConfig]
+showPackage :: [[PackageConfig]]
-> FilePath
-> String
-> [PackageConfig -> [String]]
-> IO ()
-showPackage packages pkgconf pkg_name fields =
- case [ p | p <- packages, name p == pkg_name ] of
- [] -> die ("can't find package `" ++ pkg_name ++ "'")
+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 ++ "'\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"
-
-addPackage :: [PackageConfig] -> FilePath -> FilePath
- -> Bool -> Bool -> Bool -> IO ()
-addPackage packages pkgconf inputFile auto_ghci_libs updatePkg force = do
- checkConfigAccess pkgconf
+ _ -> die "showPackage: internal error\n"
+
+addPackage :: [[PackageConfig]] -> [(String, String)]
+ -> FilePath -> FilePath
+ -> Bool -> Bool -> Bool -> IO ()
+addPackage pkg_confs defines
+ filename inputFile
+ auto_ghci_libs updatePkg force = do
+ checkConfigAccess filename
s <-
case inputFile of
"-" -> do
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 force
+ hPutStr stdout "Expanding embedded variables... "
+ new_exp_pkg <- expandEnvVars new_pkg defines force
hPutStrLn stdout "done."
- new_details <- validatePackageConfig new_exp_pkg packages
+ new_details <- validatePackageConfig new_exp_pkg pkg_confs
auto_ghci_libs updatePkg force
- savePackageConfig pkgconf
- maybeRestoreOldConfig pkgconf $
- writeNewConfig pkgconf new_details
+ savePackageConfig filename
+ maybeRestoreOldConfig filename $
+ writeNewConfig filename new_details
-removePackage :: [PackageConfig] -> FilePath -> String -> IO ()
-removePackage packages pkgconf pkgName = do
- checkConfigAccess pkgconf
+removePackage :: [[PackageConfig]] -> FilePath -> String -> IO ()
+removePackage (packages : _) filename pkgName = do
+ checkConfigAccess filename
when (pkgName `notElem` map name packages)
- (die ("package `" ++ pkgName ++ "' not installed"))
- savePackageConfig pkgconf
- maybeRestoreOldConfig pkgconf $
- writeNewConfig pkgconf (filter ((/= pkgName) . name) packages)
+ (die (filename ++ ": package `" ++ pkgName ++ "' not found\n"))
+ savePackageConfig filename
+ maybeRestoreOldConfig filename $
+ writeNewConfig filename (filter ((/= pkgName) . name) packages)
checkConfigAccess :: FilePath -> IO ()
-checkConfigAccess pkgconf = do
- access <- getPermissions pkgconf
+checkConfigAccess filename = do
+ access <- getPermissions filename
when (not (writable access))
- (die "you don't have permission to modify the package configuration file")
+ (die (filename ++ ": you don't have permission to modify this file\n"))
-maybeRestoreOldConfig :: String -> IO () -> IO ()
-maybeRestoreOldConfig conf_file io
+maybeRestoreOldConfig :: FilePath -> IO () -> IO ()
+maybeRestoreOldConfig filename io
= my_catch io (\e -> do
hPutStr stdout "\nWARNING: an error was encountered while the new \n\
\configuration was being written. Attempting to \n\
\restore the old configuration... "
- renameFile (conf_file ++ ".old") conf_file
+ renameFile (filename ++ ".old") filename
hPutStrLn stdout "done."
my_throw e
)
-writeNewConfig :: String -> [PackageConfig] -> IO ()
-writeNewConfig conf_file packages = do
+writeNewConfig :: FilePath -> [PackageConfig] -> IO ()
+writeNewConfig filename packages = do
hPutStr stdout "Writing new package config file... "
- h <- openFile conf_file WriteMode
+ h <- openFile filename WriteMode
hPutStrLn h (dumpPackages packages)
hClose h
hPutStrLn stdout "done."
-savePackageConfig :: String -> IO ()
-savePackageConfig conf_file = do
+savePackageConfig :: FilePath -> IO ()
+savePackageConfig filename = do
hPutStr stdout "Saving old package config file... "
-- mv rather than cp because we've already done an hGetContents
-- on this file so we won't be able to open it for writing
-- unless we move the old one out of the way...
- let oldFile = conf_file ++ ".old"
+ let oldFile = filename ++ ".old"
doesExist <- doesFileExist oldFile `catch` (\ _ -> return False)
when doesExist (removeFile oldFile `catch` (const $ return ()))
- catch (renameFile conf_file oldFile)
+ catch (renameFile filename oldFile)
(\ err -> do
hPutStrLn stderr (unwords [ "Unable to rename "
- , show conf_file
+ , show filename
, " to "
, show oldFile
])
-- if requested.
validatePackageConfig :: PackageConfig
- -> [PackageConfig]
+ -> [[PackageConfig]]
-> Bool
-> Bool
-> Bool
-> IO [PackageConfig]
-validatePackageConfig pkg pkgs auto_ghci_libs updatePkg force = do
+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"))
- mapM_ (checkDep pkgs force) (package_deps pkg)
+ (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)
mapM_ (checkDir force) (library_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 $libdir is
| otherwise = do
there <- doesDirectoryExist d
when (not there)
- (dieOrForce force ("`" ++ d ++ "' doesn't exist or isn't a directory"))
+ (dieOrForce force ("`" ++ d ++ "' doesn't exist or isn't a directory\n"))
-checkDep :: [PackageConfig] -> Bool -> String -> IO ()
+checkDep :: [[PackageConfig]] -> Bool -> String -> IO ()
checkDep pkgs force n
- | n `elem` map name pkgs = return ()
- | otherwise = dieOrForce force ("dependency `" ++ n ++ "' doesn't exist")
+ | n `elem` pkg_names = return ()
+ | otherwise = dieOrForce force ("dependency `" ++ n ++ "' doesn't exist\n")
+ where
+ pkg_names = concat (map (map name) pkgs)
checkHSLib :: [String] -> Bool -> Bool -> String -> IO ()
checkHSLib dirs auto_ghci_libs force lib = do
"' on library path")
(dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
+doesLibExistIn :: String -> String -> IO Bool
doesLibExistIn lib d
| "$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
hPutStrLn stderr (" done.")
-----------------------------------------------------------------------------
-expandEnvVars :: PackageConfig -> Bool -> IO PackageConfig
-expandEnvVars pkg force = do
+expandEnvVars :: PackageConfig -> [(String, String)] -> Bool -> IO PackageConfig
+expandEnvVars pkg defines force = do
-- permit _all_ strings to contain ${..} environment variable references,
-- arguably too flexible.
nm <- expandString (name pkg)
, extra_frameworks= e_frames
})
where
- expandStrings = mapM expandString
-
- -- Just for fun, keep this in the IO monad.
+ expandStrings :: [String] -> IO [String]
+ expandStrings = liftM concat . mapM expandSpecial
+
+ -- Permit substitutions for list-valued variables (but only when
+ -- they occur alone), e.g., package_deps["${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 (=='$') str of
- (xs, _:'{':rs) ->
- case span (/='}') rs of
- (nm,_:remainder) -> do
- nm' <- lookupEnvVar nm
- str' <- expandString remainder
- return (nm' ++ str')
- _ -> return str -- no closing '}'
- _ -> return str
+ expandString = liftM concat . mapM expandElem . splitString
+
+ expandElem :: Elem -> IO String
+ expandElem (String s) = return s
+ expandElem (Var v) = lookupEnvVar v
+ lookupEnvVar :: String -> IO String
lookupEnvVar nm =
+ case lookup nm defines of
+ Just x | not (null x) -> return x
+ _ ->
catch (System.getEnv nm)
(\ _ -> do dieOrForce force ("Unable to expand variable " ++
show nm)
return "")
+data Elem = String String | Var String
+
+splitString :: String -> [Elem]
+splitString "" = []
+splitString str =
+ case break (== '$') 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