{-# OPTIONS -fglasgow-exts #-}
-
-----------------------------------------------------------------------------
+--
+-- (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?)
+
+module Main (main) where
-import Package
+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 qualified Exception
#endif
+import Data.Char ( isSpace )
import Monad
import Directory
-import System ( getEnv, getArgs, getProgName,
- system, exitWith,
- ExitCode(..)
+import System ( getArgs, getProgName,
+ exitWith, ExitCode(..)
)
-import IO
-import List ( isPrefixOf, isSuffixOf )
-
-import ParsePkgConfLite
-
-#include "../../includes/ghcconfig.h"
+import System.IO
+import Data.List ( isPrefixOf, isSuffixOf, intersperse )
#ifdef mingw32_HOST_OS
import Foreign
#endif
#endif
+-- -----------------------------------------------------------------------------
+-- Entry point
+
main :: IO ()
main = do
args <- getArgs
case getOpt Permute flags args of
- (cli,_,[]) | DumpHelp `elem` cli -> do
+ (cli,_,[]) | FlagHelp `elem` cli -> do
prog <- getProgramName
bye (usageInfo (usageHeader prog) flags)
- (cli,_,[]) | DumpVersion `elem` cli ->
- bye copyright
- (cli@(_:_),[],[]) ->
- runit cli
- (_,_,errors) -> do
+ (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)
-data Flag
- = Config FilePath
- | Input FilePath
- | 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
-
-copyright :: String
-copyright = "GHC package manager version " ++ version ++ "\n"
-
--- hackery to convice cpp to splice GHC_PKG_VERSION into a string
-version :: String
-version = GHC_PKG_VERSION
+-- -----------------------------------------------------------------------------
+-- Command-line syntax
-usageHeader :: String -> String
-usageHeader prog = "Usage: " ++ prog ++ " [OPTION...]\n"
+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 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",
- Option ['u'] ["update-package"] (NoArg (Add True))
- "update package with new configuration",
- Option ['i'] ["input-file"] (ReqArg Input "FILE")
- "read new package info from specified file",
- 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 [] ["force"] (NoArg Force)
- "ignore missing directories/libraries",
- 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 ['D'] ["define-name"] (ReqArg toDefined "NAME=VALUE")
- "define NAME as VALUE",
- Option ['?'] ["help"] (NoArg DumpHelp)
+ 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 DumpVersion)
+ Option ['V'] ["version"] (NoArg FlagVersion)
"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\n"
- conf_filenames <-
- case [ f | Config f <- clis ] of
- fs@(_:_) -> return (reverse fs) -- NOTE reverse
+
+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 ++ "/package.conf"]
-
- 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 "framework_dirs" = return framework_dirs
- toField "extra_frameworks"= return extra_frameworks
- toField s = die ("unknown field: `" ++ s ++ "'\n")
-
- fields <- mapM toField [ f | Field f <- clis ]
-
- 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.
+ 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 <file> means overlap with <file>
+ 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
- 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 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]]
- -> FilePath
- -> String
- -> [PackageConfig -> [String]]
- -> IO ()
-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\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
+ case input of
"-" -> do
- hPutStr stdout "Reading package info from stdin... "
+ putStr "Reading package info from stdin... "
getContents
f -> do
- hPutStr stdout ("Reading package info from " ++ show f)
+ putStr ("Reading package info from " ++ show f ++ " ")
readFile f
- let new_pkg = parseOnePackageConfig s
- 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
- hPutStrLn stdout "done."
- new_details <- validatePackageConfig new_exp_pkg pkg_confs
- auto_ghci_libs updatePkg force
- savePackageConfig filename
- maybeRestoreOldConfig filename $
- writeNewConfig filename new_details
-
-removePackage :: [[PackageConfig]] -> FilePath -> String -> IO ()
-removePackage (packages : _) filename pkgName = do
- checkConfigAccess filename
- when (pkgName `notElem` map name packages)
- (die (filename ++ ": package `" ++ pkgName ++ "' not found\n"))
- savePackageConfig filename
- maybeRestoreOldConfig filename $
- writeNewConfig filename (filter ((/= pkgName) . name) packages)
+
+ 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 | versionTags (pkgVersion pkgid) == versionTags 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 filename = do
access <- getPermissions filename
when (not (writable access))
- (die (filename ++ ": you don't have permission to modify this file\n"))
+ (die (filename ++ ": you don't have permission to modify this file"))
maybeRestoreOldConfig :: FilePath -> IO () -> IO ()
maybeRestoreOldConfig filename io
- = my_catch io (\e -> do
+ = 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 :: FilePath -> [PackageConfig] -> IO ()
+writeNewConfig :: FilePath -> [InstalledPackageInfo] -> IO ()
writeNewConfig filename packages = do
hPutStr stdout "Writing new package config file... "
h <- openFile filename WriteMode
- hPutStrLn h (dumpPackages packages)
+ hPutStrLn h (show packages)
hClose h
hPutStrLn stdout "done."
-- Sanity-check a new package config, and automatically build GHCi libs
-- if requested.
-validatePackageConfig :: PackageConfig
- -> [[PackageConfig]]
- -> Bool
- -> Bool
- -> Bool
- -> 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\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)
- mapM_ (checkDir force) (include_dirs pkg)
- mapM_ (checkHSLib (library_dirs pkg) auto_ghci_libs force) (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],
- let existing_pkgs
- | updatePkg = filter ((/=(name pkg)).name) pkgs
- | otherwise = pkgs
- return (existing_pkgs ++ [pkg])
+
+-- 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
- | "$libdir" `isPrefixOf` d = return ()
- -- can't check this, because we don't know what $libdir is
+ | "$topdir" `isPrefixOf` d = return ()
+ -- can't check this, because we don't know what $topdir is
| otherwise = do
there <- doesDirectoryExist d
when (not there)
- (dieOrForce force ("`" ++ d ++ "' doesn't exist or isn't a directory\n"))
-
-checkDep :: [[PackageConfig]] -> Bool -> String -> IO ()
-checkDep pkgs force n
- | n `elem` pkg_names = return ()
- | otherwise = dieOrForce force ("dependency `" ++ n ++ "' doesn't exist\n")
+ (dieOrForce force (d ++ " doesn't exist or isn't a directory"))
+
+checkDep :: PackageDBStack -> Bool -> PackageIdentifier -> IO ()
+checkDep db_stack force pkgid
+ | real_version && pkgid `elem` pkgids = return ()
+ | not real_version && pkgName pkgid `elem` pkg_names = return ()
+ | otherwise = dieOrForce force ("dependency " ++ showPackageId pkgid
+ ++ " doesn't exist")
where
- pkg_names = concat (map (map name) pkgs)
+ -- for backwards compat, we treat 0.0 as a special version,
+ -- and don't check that it actually exists.
+ real_version = realVersion pkgid
+
+ all_pkgs = concat (map snd db_stack)
+ pkgids = map package all_pkgs
+ pkg_names = map pkgName pkgids
+
+realVersion :: PackageIdentifier -> Bool
+realVersion pkgid = versionBranch (pkgVersion pkgid) /= []
checkHSLib :: [String] -> Bool -> Bool -> String -> IO ()
checkHSLib dirs auto_ghci_libs force lib = do
let batch_lib_file = "lib" ++ lib ++ ".a"
bs <- mapM (doesLibExistIn batch_lib_file) dirs
case [ dir | (exists,dir) <- zip bs dirs, exists ] of
- [] -> dieOrForce force ("cannot find `" ++ batch_lib_file ++
- "' on library path")
+ [] -> dieOrForce force ("cannot find " ++ batch_lib_file ++
+ " on library path")
(dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
doesLibExistIn :: String -> String -> IO Bool
doesLibExistIn lib d
- | "$libdir" `isPrefixOf` d = return True
+ | "$topdir" `isPrefixOf` d = return True
| otherwise = doesFileExist (d ++ '/':lib)
checkGHCiLib :: [String] -> String -> String -> String -> Bool -> IO ()
| 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 ++ "'")
+ [] -> hPutStrLn stderr ("warning: can't find GHCi lib " ++ ghci_lib_file)
(_:_) -> return ()
where
ghci_lib_file = lib ++ ".o"
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 ++ "'...")
-#ifdef darwin_TARGET_OS
- system("ld -r -x -o " ++ ghci_lib_file ++
- " -all_load " ++ batch_lib_file)
-#else
-#ifdef mingw32_HOST_OS
+ 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"
- system (maybe "" (++"/gcc-lib/") execDir++"ld -r -x -o " ++ ghci_lib_file ++
- " --whole-archive " ++ batch_lib_file)
+ r <- rawSystem (maybe "" (++"/gcc-lib/") execDir++"ld") ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
#else
- system("ld -r -x -o " ++ ghci_lib_file ++
- " --whole-archive " ++ batch_lib_file)
-#endif
+ r <- rawSystem "ld" ["-r","-x","-o",ghci_lib_file,"--whole-archive",batch_lib_file]
#endif
+ when (r /= ExitSuccess) $ exitWith r
hPutStrLn stderr (" done.")
------------------------------------------------------------------------------
-expandEnvVars :: PackageConfig -> [(String, String)] -> Bool -> IO PackageConfig
+-- -----------------------------------------------------------------------------
+-- 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)
+ nm <- expandString (name pkg)
imp_dirs <- expandStrings (import_dirs pkg)
src_dirs <- expandStrings (source_dirs pkg)
lib_dirs <- expandStrings (library_dirs pkg)
wordsBy p s = case dropWhile p s of
"" -> []
s' -> w : wordsBy p s'' where (w,s'') = break p s'
+#endif
-----------------------------------------------------------------------------
bye s = putStr s >> exitWith ExitSuccess
die :: String -> IO a
-die s = do { hFlush stdout ; hPutStr stderr s; exitWith (ExitFailure 1) }
+die s = do
+ hFlush stdout
+ prog <- getProgramName
+ hPutStrLn stderr (prog ++ ": " ++ s)
+ exitWith (ExitFailure 1)
dieOrForce :: Bool -> String -> IO ()
dieOrForce force s
| force = do hFlush stdout; hPutStrLn stderr (s ++ " (ignoring)")
- | otherwise = die (s ++ "\n")
+ | otherwise = die s
------------------------------------------------------------------------------
--- Exceptions
-
-#ifndef __GLASGOW_HASKELL__
-
-eval_catch a h = a `seq` return ()
-my_catch = IO.catch
-my_throw = IO.fail
-
-#else /* GHC */
-
-my_throw = Exception.throw
-#if __GLASGOW_HASKELL__ > 408
-eval_catch = Exception.catch . Exception.evaluate
-my_catch = Exception.catch
-#else
-eval_catch = Exception.catchAll
-my_catch = Exception.catchAllIO
-#endif
-
-#endif
-----------------------------------------
-- Cut and pasted from ghc/compiler/SysTools
where
len = 2048::Int -- Plenty, PATH_MAX is 512 under Win32.
-foreign import stdcall "GetModuleFileNameA" unsafe
+foreign import stdcall unsafe "GetModuleFileNameA"
getModuleFileName :: Ptr () -> CString -> Int -> IO Int32
#else
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
projects / ghc-hetmet.git / blobdiff