X-Git-Url: http://git.megacz.com/?a=blobdiff_plain;f=ghc%2Futils%2Fghc-pkg%2FMain.hs;h=34c9dfe48723df64854f63c077734b5efd466277;hb=e67b107bc40a589c2566ec2eb7dd0db32b5c21eb;hp=a4cb60c31149e19a7cc3383251d4cb1abbef7702;hpb=3f1b7ac446f759d5e6a3a1f0b7e8ba6b2912531e;p=ghc-hetmet.git diff --git a/ghc/utils/ghc-pkg/Main.hs b/ghc/utils/ghc-pkg/Main.hs index a4cb60c..34c9dfe 100644 --- a/ghc/utils/ghc-pkg/Main.hs +++ b/ghc/utils/ghc-pkg/Main.hs @@ -1,188 +1,515 @@ +{-# OPTIONS -fglasgow-exts #-} ----------------------------------------------------------------------------- --- $Id: Main.hs,v 1.17 2001/10/10 23:17:14 sof Exp $ +-- +-- (c) The University of Glasgow 2004. -- -- Package management tool +-- ----------------------------------------------------------------------------- -module Main where +-- TODO: +-- - validate modules +-- - expanding of variables in new-style package conf +-- - version manipulation (checking whether old version exists, +-- hiding old version?) -import Package +module Main (main) where -#ifdef __GLASGOW_HASKELL__ -import qualified Exception -#endif +import Version ( version, targetOS, targetARCH ) +import Distribution.InstalledPackageInfo +import Distribution.Compat.ReadP +import Distribution.ParseUtils ( showError, ParseResult(..) ) +import Distribution.Package +import Distribution.Version +import Compat.Directory ( getAppUserDataDirectory, createDirectoryIfMissing ) +import Compat.RawSystem ( rawSystem ) +import Control.Exception ( evaluate ) + +import Prelude + +#include "../../includes/ghcconfig.h" + +#if __GLASGOW_HASKELL__ >= 504 +import System.Console.GetOpt +import Text.PrettyPrint +import qualified Control.Exception as Exception +#else import GetOpt import Pretty +import qualified Exception +#endif + +import Data.Char ( isSpace ) import Monad import Directory -import System -import IO +import System ( getArgs, getProgName, + exitWith, ExitCode(..) + ) +import System.IO +import Data.List ( isPrefixOf, isSuffixOf, intersperse ) -#include "../../includes/config.h" +#ifdef mingw32_HOST_OS +import Foreign -#ifdef mingw32_TARGET_OS -import Win32DLL +#if __GLASGOW_HASKELL__ >= 504 +import Foreign.C.String +#else +import CString +#endif #endif +-- ----------------------------------------------------------------------------- +-- Entry point + +main :: IO () main = do args <- getArgs case getOpt Permute flags args of - (clis,[],[]) -> runit clis - (_,_,errors) -> die (concat errors ++ - usageInfo usageHeader flags) - -data Flag = Config String | List | Add | Remove String | Show String - | Field String | AutoGHCiLibs - -isAction (Config _) = False -isAction (Field _) = False -isAction (AutoGHCiLibs) = False -isAction _ = True - -usageHeader = "ghc-pkg [OPTION...]" - + (cli,_,[]) | FlagHelp `elem` cli -> do + prog <- getProgramName + bye (usageInfo (usageHeader prog) flags) + (cli,_,[]) | FlagVersion `elem` cli -> + bye ourCopyright + (cli,nonopts,[]) -> + runit cli nonopts + (_,_,errors) -> tryOldCmdLine errors args + +-- If the new command-line syntax fails, then we try the old. If that +-- fails too, then we output the original errors and the new syntax +-- (so the old syntax is still available, but hidden). +tryOldCmdLine :: [String] -> [String] -> IO () +tryOldCmdLine errors args = do + case getOpt Permute oldFlags args of + (cli@(_:_),[],[]) -> + oldRunit cli + _failed -> do + prog <- getProgramName + die (concat errors ++ usageInfo (usageHeader prog) flags) + +-- ----------------------------------------------------------------------------- +-- Command-line syntax + +data Flag + = FlagUser + | FlagGlobal + | FlagHelp + | FlagVersion + | FlagConfig FilePath + | FlagGlobalConfig FilePath + | FlagForce + | FlagAutoGHCiLibs + deriving Eq + +flags :: [OptDescr Flag] flags = [ - Option ['f'] ["config-file"] (ReqArg Config "FILE") - "Use the specified package config file", - Option ['l'] ["list-packages"] (NoArg List) - "List the currently installed packages", - Option ['a'] ["add-package"] (NoArg Add) - "Add a new package", - Option ['s'] ["show-package"] (ReqArg Show "NAME") - "Show the configuration for package NAME", - Option [] ["field"] (ReqArg Field "FIELD") - "(with --show-package) Show field FIELD only", - Option ['r'] ["remove-package"] (ReqArg Remove "NAME") - "Remove an installed package", - Option ['g'] ["auto-ghci-libs"] (NoArg AutoGHCiLibs) - "Automatically build libs for GHCi (with -a)" + Option [] ["user"] (NoArg FlagUser) + "use the current user's package database", + Option [] ["global"] (NoArg FlagGlobal) + "(default) use the global package database", + Option ['f'] ["package-conf"] (ReqArg FlagConfig "FILE") + "act upon specified package config file (only)", + Option [] ["global-conf"] (ReqArg FlagGlobalConfig "FILE") + "location of the global package config", + Option [] ["force"] (NoArg FlagForce) + "ignore missing dependencies, directories, and libraries", + Option ['g'] ["auto-ghci-libs"] (NoArg FlagAutoGHCiLibs) + "automatically build libs for GHCi (with register)", + Option ['?'] ["help"] (NoArg FlagHelp) + "display this help and exit", + Option ['V'] ["version"] (NoArg FlagVersion) + "output version information and exit" ] -#ifdef mingw32_TARGET_OS -subst a b ls = map (\ x -> if x == a then b else x) ls - -unDosifyPath xs = subst '\\' '/' xs -#endif - -runit clis = do - conf_file <- - case [ f | Config f <- clis ] of - fs@(_:_) -> return (last fs) -#ifndef mingw32_TARGET_OS - [] -> die "missing -f option, location of package.conf unknown" -#else - [] -> do h <- getModuleHandle Nothing - n <- getModuleFileName h - return (reverse (drop (length "/bin/ghc-pkg.exe") (reverse (unDosifyPath n))) ++ "/package.conf") -#endif - - let toField "import_dirs" = return import_dirs - toField "source_dirs" = return source_dirs - toField "library_dirs" = return library_dirs - toField "hs_libraries" = return hs_libraries - toField "extra_libraries" = return extra_libraries - toField "include_dirs" = return include_dirs - toField "c_includes" = return c_includes - toField "package_deps" = return package_deps - toField "extra_ghc_opts" = return extra_ghc_opts - toField "extra_cc_opts" = return extra_cc_opts - toField "extra_ld_opts" = return extra_ld_opts - toField s = die ("unknown field: `" ++ s ++ "'") - - fields <- mapM toField [ f | Field f <- clis ] - - s <- readFile conf_file - let details = read s :: [PackageConfig] - eval_catch details (\_ -> die "parse error in package config file") - - let auto_ghci_libs = any isAuto clis - where isAuto AutoGHCiLibs = True; isAuto _ = False - - case [ c | c <- clis, isAction c ] of - [ List ] -> listPackages details - [ Add ] -> addPackage details conf_file auto_ghci_libs - [ Remove p ] -> removePackage details conf_file p - [ Show p ] -> showPackage details conf_file p fields - _ -> die (usageInfo usageHeader flags) - - -listPackages :: [PackageConfig] -> IO () -listPackages details = do - hPutStr stdout (listPkgs details) - hPutChar stdout '\n' - -showPackage :: [PackageConfig] -> FilePath -> String - -> [PackageConfig->[String]] -> IO () -showPackage details pkgconf pkg_name fields = - case [ p | p <- details, name p == pkg_name ] of - [] -> 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)))) - _ -> die "showPackage: internal error" - -addPackage :: [PackageConfig] -> FilePath -> Bool -> IO () -addPackage details pkgconf auto_ghci_libs = do - checkConfigAccess pkgconf - hPutStr stdout "Reading package info from stdin... " - s <- getContents - let new_pkg = read s :: PackageConfig - eval_catch new_pkg (\_ -> die "parse error in package info") - hPutStrLn stdout "done." - checkPackageConfig new_pkg details auto_ghci_libs - savePackageConfig pkgconf - maybeRestoreOldConfig pkgconf $ - writeNewConfig pkgconf (details ++ [new_pkg]) - -removePackage :: [PackageConfig] -> FilePath -> String -> IO () -removePackage details pkgconf pkg = do - checkConfigAccess pkgconf - if (pkg `notElem` map name details) - then die ("package `" ++ pkg ++ "' not installed") - else do - savePackageConfig pkgconf - maybeRestoreOldConfig pkgconf $ - writeNewConfig pkgconf (filter ((/= pkg) . name) details) +ourCopyright :: String +ourCopyright = "GHC package manager version " ++ version ++ "\n" + +usageHeader :: String -> String +usageHeader prog = substProg prog $ + "Usage:\n" ++ + " $p register {filename | -}\n" ++ + " Register the package using the specified installed package\n" ++ + " description. The syntax for the latter is given in the $p\n" ++ + " documentation.\n" ++ + "\n" ++ + " $p update {filename | -}\n" ++ + " Register the package, overwriting any other package with the\n" ++ + " same name.\n" ++ + "\n" ++ + " $p unregister {pkg-id}\n" ++ + " Unregister the specified package.\n" ++ + "\n" ++ + " $p expose {pkg-id}\n" ++ + " Expose the specified package.\n" ++ + "\n" ++ + " $p hide {pkg-id}\n" ++ + " Hide the specified package.\n" ++ + "\n" ++ + " $p list\n" ++ + " List registered packages in the global database, and also the" ++ + " user database if --user is given.\n" ++ + "\n" ++ + " $p describe {pkg-id}\n" ++ + " Give the registered description for the specified package. The\n" ++ + " description is returned in precisely the syntax required by $p\n" ++ + " register.\n" ++ + "\n" ++ + " $p field {pkg-id} {field}\n" ++ + " Extract the specified field of the package description for the\n" ++ + " specified package.\n" ++ + "\n" ++ + " The following optional flags are also accepted:\n" + +substProg :: String -> String -> String +substProg _ [] = [] +substProg prog ('$':'p':xs) = prog ++ substProg prog xs +substProg prog (c:xs) = c : substProg prog xs + +-- ----------------------------------------------------------------------------- +-- Do the business + +runit :: [Flag] -> [String] -> IO () +runit cli nonopts = do + prog <- getProgramName + let + force = FlagForce `elem` cli + auto_ghci_libs = FlagAutoGHCiLibs `elem` cli + -- + -- first, parse the command + case nonopts of + ["register", filename] -> + registerPackage filename [] cli auto_ghci_libs False force + ["update", filename] -> + registerPackage filename [] cli auto_ghci_libs True force + ["unregister", pkgid_str] -> do + pkgid <- readGlobPkgId pkgid_str + unregisterPackage pkgid cli + ["expose", pkgid_str] -> do + pkgid <- readGlobPkgId pkgid_str + exposePackage pkgid cli + ["hide", pkgid_str] -> do + pkgid <- readGlobPkgId pkgid_str + hidePackage pkgid cli + ["list"] -> do + listPackages cli + ["describe", pkgid_str] -> do + pkgid <- readGlobPkgId pkgid_str + describePackage cli pkgid + ["field", pkgid_str, field] -> do + pkgid <- readGlobPkgId pkgid_str + describeField cli pkgid field + [] -> do + die ("missing command\n" ++ + usageInfo (usageHeader prog) flags) + (_cmd:_) -> do + die ("command-line syntax error\n" ++ + usageInfo (usageHeader prog) flags) + +parseCheck :: ReadP a a -> String -> String -> IO a +parseCheck parser str what = + case [ x | (x,ys) <- readP_to_S parser str, all isSpace ys ] of + [x] -> return x + _ -> die ("cannot parse \'" ++ str ++ "\' as a " ++ what) + +readPkgId :: String -> IO PackageIdentifier +readPkgId str = parseCheck parsePackageId str "package identifier" + +readGlobPkgId :: String -> IO PackageIdentifier +readGlobPkgId str = parseCheck parseGlobPackageId str "package identifier" + +parseGlobPackageId :: ReadP r PackageIdentifier +parseGlobPackageId = + parsePackageId + +++ + (do n <- parsePackageName; string "-*" + return (PackageIdentifier{ pkgName = n, pkgVersion = globVersion })) + +-- globVersion means "all versions" +globVersion = Version{ versionBranch=[], versionTags=["*"] } + +-- ----------------------------------------------------------------------------- +-- Package databases + +-- Some commands operate on a single database: +-- register, unregister, expose, hide +-- however these commands also check the union of the available databases +-- in order to check consistency. For example, register will check that +-- dependencies exist before registering a package. +-- +-- Some commands operate on multiple databases, with overlapping semantics: +-- list, describe, field + +type PackageDBName = FilePath +type PackageDB = [InstalledPackageInfo] + +type PackageDBStack = [(PackageDBName,PackageDB)] + -- A stack of package databases. Convention: head is the topmost + -- in the stack. Earlier entries override later one. + +getPkgDatabases :: Bool -> [Flag] -> IO PackageDBStack +getPkgDatabases modify flags = do + -- first we determine the location of the global package config. On Windows, + -- this is found relative to the ghc-pkg.exe binary, whereas on Unix the + -- location is passed to the binary using the --global-config flag by the + -- wrapper script. + let err_msg = "missing --global-conf option, location of global package.conf unknown\n" + global_conf <- + case [ f | FlagGlobalConfig f <- flags ] of + [] -> do mb_dir <- getExecDir "/bin/ghc-pkg.exe" + case mb_dir of + Nothing -> die err_msg + Just dir -> return (dir `joinFileName` "package.conf") + fs -> return (last fs) + + -- get the location of the user package database, and create it if necessary + appdir <- getAppUserDataDirectory "ghc" + + let + subdir = targetARCH ++ '-':targetOS ++ '-':version + archdir = appdir `joinFileName` subdir + user_conf = archdir `joinFileName` "package.conf" + b <- doesFileExist user_conf + when (not b) $ do + putStrLn ("Creating user package database in " ++ user_conf) + createDirectoryIfMissing True archdir + writeFile user_conf emptyPackageConfig + + let + -- The semantics here are slightly strange. If we are + -- *modifying* the database, then the default is to modify + -- the global database by default, unless you say --user. + -- If we are not modifying (eg. list, describe etc.) then + -- the user database is included by default. + databases + | modify = foldl addDB [global_conf] flags + | not modify = foldl addDB [user_conf,global_conf] flags + + -- implement the following rules: + -- --user means overlap with the user database + -- --global means reset to just the global database + -- -f means overlap with + addDB dbs FlagUser = if user_conf `elem` dbs + then dbs + else user_conf : dbs + addDB dbs FlagGlobal = [global_conf] + addDB dbs (FlagConfig f) = f : dbs + addDB dbs _ = dbs + + db_stack <- mapM readParseDatabase databases + return db_stack + +readParseDatabase :: PackageDBName -> IO (PackageDBName,PackageDB) +readParseDatabase filename = do + str <- readFile filename + let packages = read str + evaluate packages + `Exception.catch` \_ -> + die (filename ++ ": parse error in package config file") + return (filename,packages) + +emptyPackageConfig :: String +emptyPackageConfig = "[]" + +-- ----------------------------------------------------------------------------- +-- Registering + +registerPackage :: FilePath + -> [(String,String)] -- defines, ToDo: maybe remove? + -> [Flag] + -> Bool -- auto_ghci_libs + -> Bool -- update + -> Bool -- force + -> IO () +registerPackage input defines flags auto_ghci_libs update force = do + db_stack <- getPkgDatabases True flags + let + db_to_operate_on = my_head "db" db_stack + db_filename = fst db_to_operate_on + -- + checkConfigAccess db_filename + + s <- + case input of + "-" -> do + putStr "Reading package info from stdin... " + getContents + f -> do + putStr ("Reading package info from " ++ show f ++ " ") + readFile f + + pkg <- parsePackageInfo s defines force + putStrLn "done." + + validatePackageConfig pkg db_stack auto_ghci_libs update force + new_details <- updatePackageDB db_stack (snd db_to_operate_on) pkg + savePackageConfig db_filename + maybeRestoreOldConfig db_filename $ + writeNewConfig db_filename new_details + +parsePackageInfo + :: String + -> [(String,String)] + -> Bool + -> IO InstalledPackageInfo +parsePackageInfo str defines force = + case parseInstalledPackageInfo str of + ParseOk ok -> return ok + ParseFailed err -> die (showError err) + +-- ----------------------------------------------------------------------------- +-- Exposing, Hiding, Unregistering are all similar + +exposePackage :: PackageIdentifier -> [Flag] -> IO () +exposePackage = modifyPackage (\p -> [p{exposed=True}]) + +hidePackage :: PackageIdentifier -> [Flag] -> IO () +hidePackage = modifyPackage (\p -> [p{exposed=False}]) + +unregisterPackage :: PackageIdentifier -> [Flag] -> IO () +unregisterPackage = modifyPackage (\p -> []) + +modifyPackage + :: (InstalledPackageInfo -> [InstalledPackageInfo]) + -> PackageIdentifier + -> [Flag] + -> IO () +modifyPackage fn pkgid flags = do + db_stack <- getPkgDatabases True{-modify-} flags + let ((db_name, pkgs) : _) = db_stack + checkConfigAccess db_name + ps <- findPackages [(db_name,pkgs)] pkgid + let pids = map package ps + savePackageConfig db_name + let new_config = concat (map modify pkgs) + modify pkg + | package pkg `elem` pids = fn pkg + | otherwise = [pkg] + maybeRestoreOldConfig db_name $ + writeNewConfig db_name new_config + +-- ----------------------------------------------------------------------------- +-- Listing packages + +listPackages :: [Flag] -> IO () +listPackages flags = do + db_stack <- getPkgDatabases False flags + mapM_ show_pkgconf (reverse db_stack) + where show_pkgconf (db_name,pkg_confs) = + hPutStrLn stdout (render $ + text (db_name ++ ":") $$ nest 4 packages + ) + where packages = fsep (punctuate comma (map pp_pkg pkg_confs)) + pp_pkg p + | exposed p = doc + | otherwise = parens doc + where doc = text (showPackageId (package p)) + +-- ----------------------------------------------------------------------------- +-- Describe + +describePackage :: [Flag] -> PackageIdentifier -> IO () +describePackage flags pkgid = do + db_stack <- getPkgDatabases False flags + ps <- findPackages db_stack pkgid + mapM_ (putStrLn . showInstalledPackageInfo) ps + +-- PackageId is can have globVersion for the version +findPackages :: PackageDBStack -> PackageIdentifier -> IO [InstalledPackageInfo] +findPackages db_stack pkgid + = case [ p | p <- all_pkgs, pkgid `matches` p ] of + [] -> die ("cannot find package " ++ showPackageId pkgid) + [p] -> return [p] + -- if the version is globVersion, then we are allowed to match + -- multiple packages. So eg. "Cabal-*" matches all Cabal packages, + -- but "Cabal" matches just one Cabal package - if there are more, + -- you get an error. + ps | pkgVersion pkgid == globVersion + -> return ps + | otherwise + -> die ("package " ++ showPackageId pkgid ++ + " matches multiple packages: " ++ + concat (intersperse ", " ( + map (showPackageId.package) ps))) + where + pid `matches` pkg + = (pkgName pid == pkgName p) + && (pkgVersion pid == pkgVersion p || not (realVersion pid)) + where p = package pkg + + all_pkgs = concat (map snd db_stack) + +-- ----------------------------------------------------------------------------- +-- Field + +describeField :: [Flag] -> PackageIdentifier -> String -> IO () +describeField flags pkgid field = do + db_stack <- getPkgDatabases False flags + case toField field of + Nothing -> die ("unknown field: " ++ field) + Just fn -> do + ps <- findPackages db_stack pkgid + mapM_ (putStrLn.fn) ps + +toField :: String -> Maybe (InstalledPackageInfo -> String) +-- backwards compatibility: +toField "import_dirs" = Just $ strList . importDirs +toField "source_dirs" = Just $ strList . importDirs +toField "library_dirs" = Just $ strList . libraryDirs +toField "hs_libraries" = Just $ strList . hsLibraries +toField "extra_libraries" = Just $ strList . extraLibraries +toField "include_dirs" = Just $ strList . includeDirs +toField "c_includes" = Just $ strList . includes +toField "package_deps" = Just $ strList . map showPackageId. depends +toField "extra_cc_opts" = Just $ strList . ccOptions +toField "extra_ld_opts" = Just $ strList . ldOptions +toField "framework_dirs" = Just $ strList . frameworkDirs +toField "extra_frameworks"= Just $ strList . frameworks +toField s = showInstalledPackageInfoField s + +strList :: [String] -> String +strList = show + +-- ----------------------------------------------------------------------------- +-- Manipulating package.conf files 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") - -maybeRestoreOldConfig :: String -> IO () -> IO () -maybeRestoreOldConfig conf_file 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 + (die (filename ++ ": you don't have permission to modify this file")) + +maybeRestoreOldConfig :: FilePath -> IO () -> IO () +maybeRestoreOldConfig filename io + = io `catch` \e -> do + hPutStrLn stderr (show e) + hPutStr stdout ("\nWARNING: an error was encountered while the new \n"++ + "configuration was being written. Attempting to \n"++ + "restore the old configuration... ") + renameFile (filename ++ ".old") filename hPutStrLn stdout "done." - my_throw e - ) + ioError e -writeNewConfig :: String -> [PackageConfig] -> IO () -writeNewConfig conf_file details = do +writeNewConfig :: FilePath -> [InstalledPackageInfo] -> IO () +writeNewConfig filename packages = do hPutStr stdout "Writing new package config file... " - h <- openFile conf_file WriteMode - hPutStrLn h (dumpPackages details) + h <- openFile filename WriteMode + hPutStrLn h (show 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 + hPutStrLn stderr (unwords [ "Unable to rename " + , show filename , " to " , show oldFile ]) @@ -193,86 +520,503 @@ savePackageConfig conf_file = do -- Sanity-check a new package config, and automatically build GHCi libs -- if requested. -checkPackageConfig :: PackageConfig -> [PackageConfig] -> Bool -> IO () -checkPackageConfig pkg pkgs auto_ghci_libs = do - if (name pkg `elem` map name pkgs) - then die ("package `" ++ name pkg ++ "' is already installed") - else do - mapM_ (checkDep pkgs) (package_deps pkg) - mapM_ checkDir (import_dirs pkg) - mapM_ checkDir (source_dirs pkg) - mapM_ checkDir (library_dirs pkg) - mapM_ checkDir (include_dirs pkg) - mapM_ (checkHSLib (library_dirs pkg) auto_ghci_libs) (hs_libraries pkg) +validatePackageConfig :: InstalledPackageInfo + -> PackageDBStack + -> Bool -- auto-ghc-libs + -> Bool -- update + -> Bool -- force + -> IO () +validatePackageConfig pkg db_stack auto_ghci_libs update force = do + checkPackageId pkg + checkDuplicates db_stack pkg update + mapM_ (checkDep db_stack force) (depends pkg) + mapM_ (checkDir force) (importDirs pkg) + mapM_ (checkDir force) (libraryDirs pkg) + mapM_ (checkDir force) (includeDirs pkg) + mapM_ (checkHSLib (libraryDirs pkg) auto_ghci_libs force) (hsLibraries pkg) -- ToDo: check these somehow? -- extra_libraries :: [String], -- c_includes :: [String], -checkDir d = do - b <- doesDirectoryExist d - if b then return () - else die ("`" ++ d ++ "' doesn't exist or isn't a directory") - -checkDep :: [PackageConfig] -> String -> IO () -checkDep pkgs n - | n `elem` map name pkgs = return () - | otherwise = die ("dependency `" ++ n ++ "' doesn't exist") - -checkHSLib :: [String] -> Bool -> String -> IO () -checkHSLib dirs auto_ghci_libs lib = do +-- When the package name and version are put together, sometimes we can +-- end up with a package id that cannot be parsed. This will lead to +-- difficulties when the user wants to refer to the package later, so +-- we check that the package id can be parsed properly here. +checkPackageId :: InstalledPackageInfo -> IO () +checkPackageId ipi = + let str = showPackageId (package ipi) in + case [ x | (x,ys) <- readP_to_S parsePackageId str, all isSpace ys ] of + [_] -> return () + [] -> die ("invalid package identifier: " ++ str) + _ -> die ("ambiguous package identifier: " ++ str) + +checkDuplicates :: PackageDBStack -> InstalledPackageInfo -> Bool -> IO () +checkDuplicates db_stack pkg update = do + let + pkgid = package pkg + + (_top_db_name, pkgs) : _ = db_stack + + pkgs_with_same_name = + [ p | p <- pkgs, pkgName (package p) == pkgName pkgid] + exposed_pkgs_with_same_name = + filter exposed pkgs_with_same_name + -- + -- Check whether this package id already exists in this DB + -- + when (not update && (package pkg `elem` map package pkgs)) $ + die ("package " ++ showPackageId pkgid ++ " is already installed") + -- + -- if we are exposing this new package, then check that + -- there are no other exposed packages with the same name. + -- + when (not update && exposed pkg && not (null exposed_pkgs_with_same_name)) $ + die ("trying to register " ++ showPackageId pkgid + ++ " as exposed, but " + ++ showPackageId (package (my_head "when" exposed_pkgs_with_same_name)) + ++ " is also exposed.") + + +checkDir :: Bool -> String -> IO () +checkDir force d + | "$topdir" `isPrefixOf` d = return () + -- can't check this, because we don't know what $topdir is + | otherwise = do + there <- doesDirectoryExist d + when (not there) + (dieOrForce force (d ++ " doesn't exist or isn't a directory")) + +checkDep :: PackageDBStack -> Bool -> PackageIdentifier -> IO () +checkDep db_stack force pkgid + | real_version && pkgid `elem` pkgids = return () + | not real_version && pkgName pkgid `elem` pkg_names = return () + | otherwise = dieOrForce force ("dependency " ++ showPackageId pkgid + ++ " doesn't exist") + where + -- for backwards compat, we treat 0.0 as a special version, + -- and don't check that it actually exists. + real_version = realVersion pkgid + + all_pkgs = concat (map snd db_stack) + pkgids = map package all_pkgs + pkg_names = map pkgName pkgids + +realVersion :: PackageIdentifier -> Bool +realVersion pkgid = versionBranch (pkgVersion pkgid) /= [] + +checkHSLib :: [String] -> Bool -> Bool -> String -> IO () +checkHSLib dirs auto_ghci_libs force lib = do let batch_lib_file = "lib" ++ lib ++ ".a" - bs <- mapM (\d -> doesFileExist (d ++ '/':batch_lib_file)) dirs + bs <- mapM (doesLibExistIn batch_lib_file) dirs case [ dir | (exists,dir) <- zip bs dirs, exists ] of - [] -> die ("cannot find `" ++ batch_lib_file ++ "' on library path") + [] -> dieOrForce force ("cannot find " ++ batch_lib_file ++ + " on library path") (dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs +doesLibExistIn :: String -> String -> IO Bool +doesLibExistIn lib d + | "$topdir" `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 -> - autoBuildGHCiLib batch_lib_dir batch_lib_file ghci_lib_file - | otherwise -> - hPutStrLn stderr ("warning: can't find GHCi lib `" - ++ ghci_lib_file ++ "'") - (dir:_) -> return () +checkGHCiLib dirs batch_lib_dir batch_lib_file lib auto_build + | auto_build = autoBuildGHCiLib batch_lib_dir batch_lib_file ghci_lib_file + | otherwise = do + bs <- mapM (doesLibExistIn ghci_lib_file) dirs + case [dir | (exists,dir) <- zip bs dirs, exists] of + [] -> hPutStrLn stderr ("warning: can't find GHCi lib " ++ ghci_lib_file) + (_:_) -> return () + where + ghci_lib_file = lib ++ ".o" -- 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 - hPutStr stderr ("building GHCi library `" ++ ghci_lib_file ++ "'...") - system("ld -r -x -o " ++ ghci_lib_file ++ - " --whole-archive " ++ batch_lib_file) + hPutStr stderr ("building GHCi library " ++ ghci_lib_file ++ "...") +#if defined(darwin_HOST_OS) + r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"-all_load",batch_lib_file] +#elif defined(mingw32_HOST_OS) + execDir <- getExecDir "/bin/ghc-pkg.exe" + r <- rawSystem (maybe "" (++"/gcc-lib/") execDir++"ld") ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file] +#else + r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file] +#endif + when (r /= ExitSuccess) $ exitWith r hPutStrLn stderr (" done.") +-- ----------------------------------------------------------------------------- +-- Updating the DB with the new package. + +updatePackageDB + :: PackageDBStack + -> [InstalledPackageInfo] + -> InstalledPackageInfo + -> IO [InstalledPackageInfo] +updatePackageDB db_stack pkgs new_pkg = do + let + -- The input package spec is allowed to give a package dependency + -- without a version number; e.g. + -- depends: base + -- Here, we update these dependencies without version numbers to + -- match the actual versions of the relevant packages installed. + updateDeps p = p{depends = map resolveDep (depends p)} + + resolveDep dep_pkgid + | realVersion dep_pkgid = dep_pkgid + | otherwise = lookupDep dep_pkgid + + lookupDep dep_pkgid + = let + name = pkgName dep_pkgid + in + case [ pid | p <- concat (map snd db_stack), + let pid = package p, + pkgName pid == name ] of + (pid:_) -> pid -- Found installed package, + -- replete with its version + [] -> dep_pkgid -- No installed package; use + -- the version-less one + + is_exposed = exposed new_pkg + pkgid = package new_pkg + name = pkgName pkgid + + pkgs' = [ maybe_hide p | p <- pkgs, package p /= pkgid ] + + -- When update is on, and we're exposing the new package, + -- we hide any packages with the same name (different versions) + -- in the current DB. Earlier checks will have failed if + -- update isn't on. + maybe_hide p + | is_exposed && pkgName (package p) == name = p{ exposed = False } + | otherwise = p + -- + return (pkgs'++[updateDeps new_pkg]) + +-- ----------------------------------------------------------------------------- +-- Searching for modules + +#if not_yet + +findModules :: [FilePath] -> IO [String] +findModules paths = + mms <- mapM searchDir paths + return (concat mms) + +searchDir path prefix = do + fs <- getDirectoryEntries path `catch` \_ -> return [] + searchEntries path prefix fs + +searchEntries path prefix [] = return [] +searchEntries path prefix (f:fs) + | looks_like_a_module = do + ms <- searchEntries path prefix fs + return (prefix `joinModule` f : ms) + | looks_like_a_component = do + ms <- searchDir (path `joinFilename` f) (prefix `joinModule` f) + ms' <- searchEntries path prefix fs + return (ms ++ ms') + | otherwise + searchEntries path prefix fs + + where + (base,suffix) = splitFileExt f + looks_like_a_module = + suffix `elem` haskell_suffixes && + all okInModuleName base + looks_like_a_component = + null suffix && all okInModuleName base + +okInModuleName c + +#endif + +-- ----------------------------------------------------------------------------- +-- The old command-line syntax, supported for backwards compatibility + +data OldFlag + = OF_Config FilePath + | OF_Input FilePath + | OF_List + | OF_ListLocal + | OF_Add Bool {- True => replace existing info -} + | OF_Remove String | OF_Show String + | OF_Field String | OF_AutoGHCiLibs | OF_Force + | OF_DefinedName String String + | OF_GlobalConfig FilePath + deriving (Eq) + +isAction :: OldFlag -> Bool +isAction OF_Config{} = False +isAction OF_Field{} = False +isAction OF_Input{} = False +isAction OF_AutoGHCiLibs{} = False +isAction OF_Force{} = False +isAction OF_DefinedName{} = False +isAction OF_GlobalConfig{} = False +isAction _ = True + +oldFlags :: [OptDescr OldFlag] +oldFlags = [ + Option ['f'] ["config-file"] (ReqArg OF_Config "FILE") + "use the specified package config file", + Option ['l'] ["list-packages"] (NoArg OF_List) + "list packages in all config files", + Option ['L'] ["list-local-packages"] (NoArg OF_ListLocal) + "list packages in the specified config file", + Option ['a'] ["add-package"] (NoArg (OF_Add False)) + "add a new package", + Option ['u'] ["update-package"] (NoArg (OF_Add True)) + "update package with new configuration", + Option ['i'] ["input-file"] (ReqArg OF_Input "FILE") + "read new package info from specified file", + Option ['s'] ["show-package"] (ReqArg OF_Show "NAME") + "show the configuration for package NAME", + Option [] ["field"] (ReqArg OF_Field "FIELD") + "(with --show-package) Show field FIELD only", + Option [] ["force"] (NoArg OF_Force) + "ignore missing directories/libraries", + Option ['r'] ["remove-package"] (ReqArg OF_Remove "NAME") + "remove an installed package", + Option ['g'] ["auto-ghci-libs"] (NoArg OF_AutoGHCiLibs) + "automatically build libs for GHCi (with -a)", + Option ['D'] ["define-name"] (ReqArg toDefined "NAME=VALUE") + "define NAME as VALUE", + Option [] ["global-conf"] (ReqArg OF_GlobalConfig "FILE") + "location of the global package config" + ] + where + toDefined str = + case break (=='=') str of + (nm,[]) -> OF_DefinedName nm [] + (nm,_:val) -> OF_DefinedName nm val + +oldRunit :: [OldFlag] -> IO () +oldRunit clis = do + let new_flags = [ f | Just f <- map conv clis ] + + conv (OF_GlobalConfig f) = Just (FlagGlobalConfig f) + conv (OF_Config f) = Just (FlagConfig f) + conv _ = Nothing + + + + let fields = [ f | OF_Field f <- clis ] + + let auto_ghci_libs = any isAuto clis + where isAuto OF_AutoGHCiLibs = True; isAuto _ = False + input_file = my_head "inp" ([ f | (OF_Input f) <- clis] ++ ["-"]) + + force = OF_Force `elem` clis + + defines = [ (nm,val) | OF_DefinedName nm val <- clis ] + + case [ c | c <- clis, isAction c ] of + [ OF_List ] -> listPackages new_flags + [ OF_ListLocal ] -> listPackages new_flags + [ OF_Add upd ] -> + registerPackage input_file defines new_flags auto_ghci_libs upd force + [ OF_Remove pkgid_str ] -> do + pkgid <- readPkgId pkgid_str + unregisterPackage pkgid new_flags + [ OF_Show pkgid_str ] + | null fields -> do + pkgid <- readPkgId pkgid_str + describePackage new_flags pkgid + | otherwise -> do + pkgid <- readPkgId pkgid_str + mapM_ (describeField new_flags pkgid) fields + _ -> do + prog <- getProgramName + die (usageInfo (usageHeader prog) flags) + +my_head s [] = error s +my_head s (x:xs) = x + +-- --------------------------------------------------------------------------- + +#ifdef OLD_STUFF +-- ToDo: reinstate +expandEnvVars :: PackageConfig -> [(String, String)] + -> Bool -> IO PackageConfig +expandEnvVars pkg defines force = do + -- permit _all_ strings to contain ${..} environment variable references, + -- arguably too flexible. + nm <- expandString (name pkg) + imp_dirs <- expandStrings (import_dirs pkg) + src_dirs <- expandStrings (source_dirs pkg) + lib_dirs <- expandStrings (library_dirs pkg) + hs_libs <- expandStrings (hs_libraries pkg) + ex_libs <- expandStrings (extra_libraries pkg) + inc_dirs <- expandStrings (include_dirs pkg) + c_incs <- expandStrings (c_includes pkg) + p_deps <- expandStrings (package_deps pkg) + e_g_opts <- expandStrings (extra_ghc_opts pkg) + e_c_opts <- expandStrings (extra_cc_opts pkg) + e_l_opts <- expandStrings (extra_ld_opts pkg) + f_dirs <- expandStrings (framework_dirs pkg) + e_frames <- expandStrings (extra_frameworks pkg) + return (pkg { name = nm + , import_dirs = imp_dirs + , source_dirs = src_dirs + , library_dirs = lib_dirs + , hs_libraries = hs_libs + , extra_libraries = ex_libs + , include_dirs = inc_dirs + , c_includes = c_incs + , package_deps = p_deps + , extra_ghc_opts = e_g_opts + , extra_cc_opts = e_c_opts + , extra_ld_opts = e_l_opts + , framework_dirs = f_dirs + , extra_frameworks= e_frames + }) + where + expandStrings :: [String] -> IO [String] + expandStrings = liftM concat . mapM expandSpecial + + -- Permit substitutions for list-valued variables (but only when + -- they occur alone), e.g., package_deps["${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 = 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' +#endif + ----------------------------------------------------------------------------- +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 { hPutStrLn stderr s; exitWith (ExitFailure 1) } +die s = do + hFlush stdout + prog <- getProgramName + hPutStrLn stderr (prog ++ ": " ++ s) + exitWith (ExitFailure 1) ------------------------------------------------------------------------------ --- Exceptions +dieOrForce :: Bool -> String -> IO () +dieOrForce force s + | force = do hFlush stdout; hPutStrLn stderr (s ++ " (ignoring)") + | otherwise = die s -#ifndef __GLASGOW_HASKELL__ -eval_catch a h = a `seq` return () -my_catch = IO.catch -my_throw = IO.fail +----------------------------------------- +-- Cut and pasted from ghc/compiler/SysTools -#else /* GHC */ +#if defined(mingw32_HOST_OS) +subst a b ls = map (\ x -> if x == a then b else x) ls +unDosifyPath xs = subst '\\' '/' xs -my_throw = Exception.throw -#if __GLASGOW_HASKELL__ > 408 -eval_catch = Exception.catch . Exception.evaluate -my_catch = Exception.catch +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 unsafe "GetModuleFileNameA" + getModuleFileName :: Ptr () -> CString -> Int -> IO Int32 #else -eval_catch = Exception.catchAll -my_catch = Exception.catchAllIO +getExecDir :: String -> IO (Maybe String) +getExecDir _ = return Nothing #endif +-- ----------------------------------------------------------------------------- +-- FilePath utils + +-- | The 'joinFileName' function is the opposite of 'splitFileName'. +-- It joins directory and file names to form a complete file path. +-- +-- The general rule is: +-- +-- > dir `joinFileName` basename == path +-- > where +-- > (dir,basename) = splitFileName path +-- +-- There might be an exceptions to the rule but in any case the +-- reconstructed path will refer to the same object (file or directory). +-- An example exception is that on Windows some slashes might be converted +-- to backslashes. +joinFileName :: String -> String -> FilePath +joinFileName "" fname = fname +joinFileName "." fname = fname +joinFileName dir "" = dir +joinFileName dir fname + | isPathSeparator (last dir) = dir++fname + | otherwise = dir++pathSeparator:fname + +-- | Checks whether the character is a valid path separator for the host +-- platform. The valid character is a 'pathSeparator' but since the Windows +-- operating system also accepts a slash (\"\/\") since DOS 2, the function +-- checks for it on this platform, too. +isPathSeparator :: Char -> Bool +isPathSeparator ch = ch == pathSeparator || ch == '/' + +-- | Provides a platform-specific character used to separate directory levels in +-- a path string that reflects a hierarchical file system organization. The +-- separator is a slash (@\"\/\"@) on Unix and Macintosh, and a backslash +-- (@\"\\\"@) on the Windows operating system. +pathSeparator :: Char +#ifdef mingw32_HOST_OS +pathSeparator = '\\' +#else +pathSeparator = '/' #endif