+{-# OPTIONS -fglasgow-exts #-}
-----------------------------------------------------------------------------
--- $Id: Main.hs,v 1.13 2001/08/21 09:03:32 rrt Exp $
+--
+-- (c) The University of Glasgow 2004.
--
-- Package management tool
+--
-----------------------------------------------------------------------------
-module Main where
-
-import Package
-
-#ifdef __GLASGOW_HASKELL__
-import qualified Exception
+-- TODO:
+-- - validate modules
+-- - expose/hide
+-- - expanding of variables in new-style package conf
+-- - version manipulation (checking whether old version exists,
+-- hiding old version?)
+
+module Main (main) where
+
+import Version ( version, targetOS, targetARCH )
+import Distribution.InstalledPackageInfo
+import Distribution.Compat.ReadP
+import Distribution.ParseUtils ( showError )
+import Distribution.Package
+import Distribution.Version
+import Compat.Directory ( getAppUserDataDirectory )
+import Control.Exception ( evaluate )
+import qualified Control.Exception as Exception
+
+import Prelude
+
+#if __GLASGOW_HASKELL__ < 603
+#include "config.h"
#endif
+
+#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 System ( getArgs, getProgName,
+ system, exitWith,
+ ExitCode(..)
+ )
import IO
+import List ( isPrefixOf, isSuffixOf )
-#include "../includes/config.h"
+#include "../../includes/ghcconfig.h"
-#ifdef mingw32_TARGET_OS
-import Win32DLL
+#ifdef mingw32_HOST_OS
+import Foreign
+
+#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
-isConfigOrField (Config _) = True
-isConfigOrField (Field _) = True
-isConfigOrField _ = False
-
-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
+ 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 [] ["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 ['?'] ["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 (tail (dropWhile (not . isSlash)
- return (reverse (drop (length "/bin/ghc-pkg.exe") (reverse (unDosifyPath n))) ++ "/package.conf")
--- (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")
-
- case [ c | c <- clis, not (isConfigOrField c) ] of
- [ List ] -> listPackages details
- [ Add ] -> addPackage details conf_file
- [ 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 -> IO ()
-addPackage details pkgconf = 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."
- if (name new_pkg `elem` map name details)
- then die ("package `" ++ name new_pkg ++ "' already installed")
- else do
- 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 {--help | -?}\n" ++
+ " Produce this usage message.\n" ++
+ "\n" ++
+ " $p register {filename | -} [--user | --global]\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 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 [--global | --user]\n" ++
+ " List all registered packages, both global and user (unless either\n" ++
+ " --global or --user is specified), and both hidden and exposed.\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" ++
+ " $p field {pkg-id} {field}\n" ++
+ " Extract the specified field of the package description for the\n" ++
+ " specified package.\n"
+
+substProg :: String -> String -> String
+substProg _ [] = []
+substProg prog ('$':'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
+ dbs <- getPkgDatabases cli
+ db_stack <- mapM readParseDatabase dbs
+ let
+ force = FlagForce `elem` cli
+ --
+ -- first, parse the command
+ case nonopts of
+ ["register", filename] ->
+ registerPackage filename [] db_stack False False force
+ ["update", filename] ->
+ registerPackage filename [] db_stack False True force
+ ["unregister", pkgid_str] -> do
+ pkgid <- readPkgId pkgid_str
+ unregisterPackage db_stack pkgid
+ ["expose", pkgid_str] -> do
+ pkgid <- readPkgId pkgid_str
+ exposePackage pkgid db_stack
+ ["hide", pkgid_str] -> do
+ pkgid <- readPkgId pkgid_str
+ hidePackage pkgid db_stack
+ ["list"] -> do
+ listPackages db_stack
+ ["describe", pkgid_str] -> do
+ pkgid <- readPkgId pkgid_str
+ describePackage db_stack pkgid
+ ["field", pkgid_str, field] -> do
+ pkgid <- readPkgId pkgid_str
+ describeField db_stack 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 readP_to_S parser str of
+ [(x,ys)] | all isSpace ys -> return x
+ _ -> die ("cannot parse \'" ++ str ++ "\' as a " ++ what)
+
+readPkgId :: String -> IO PackageIdentifier
+readPkgId str = parseCheck parsePackageId str "package identifier"
+
+-- -----------------------------------------------------------------------------
+-- 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.
+
+-- The output of this function is the list of databases to act upon, with
+-- the "topmost" overlapped database last. The commands which operate on a
+-- single database will use the last one. Commands which operate on multiple
+-- databases will interpret the databases as overlapping.
+getPkgDatabases :: [Flag] -> IO [PackageDBName]
+getPkgDatabases 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
+ user_conf = appdir `joinFileName` subdir `joinFileName` "package.conf"
+ b <- doesFileExist user_conf
+ when (not b) $ do
+ putStrLn ("Creating user package database in " ++ user_conf)
+ createParents user_conf
+ writeFile user_conf emptyPackageConfig
+
+ let
+ databases = foldl addDB [global_conf] flags
+
+ -- implement the following rules:
+ -- global database is the default
+ -- --user means overlap with the user database
+ -- --global means reset to just the global database
+ -- -f <file> means overlap with <file>
+ addDB dbs FlagUser = user_conf : dbs
+ addDB dbs FlagGlobal = [global_conf]
+ addDB dbs (FlagConfig f) = f : dbs
+ addDB dbs _ = dbs
+
+ return databases
+
+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\n")
+ return (filename,packages)
+
+emptyPackageConfig :: String
+emptyPackageConfig = "[]"
+
+-- -----------------------------------------------------------------------------
+-- Registering
+
+registerPackage :: FilePath
+ -> [(String,String)] -- defines, ToDo: maybe remove?
+ -> PackageDBStack
+ -> Bool -- auto_ghci_libs
+ -> Bool -- update
+ -> Bool -- force
+ -> IO ()
+registerPackage input defines db_stack auto_ghci_libs update force = do
+ let
+ db_to_operate_on = head 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
+ Right ok -> return ok
+ Left err -> die (showError err ++ "\n")
+
+-- Used for converting versionless package names to new
+-- PackageIdentifiers. "Version [] []" is special: it means "no
+-- version" or "any version"
+pkgNameToId :: String -> PackageIdentifier
+pkgNameToId name = PackageIdentifier name (Version [] [])
+
+-- -----------------------------------------------------------------------------
+-- Unregistering
+
+unregisterPackage :: PackageDBStack -> PackageIdentifier -> IO ()
+unregisterPackage [] _ = error "unregisterPackage"
+unregisterPackage ((db_name, pkgs) : _) pkgid = do
+ checkConfigAccess db_name
+ when (pkgid `notElem` map package pkgs)
+ (die (db_name ++ ": package '" ++ showPackageId pkgid
+ ++ "' not found\n"))
+ savePackageConfig db_name
+ maybeRestoreOldConfig db_name $
+ writeNewConfig db_name (filter ((/= pkgid) . package) pkgs)
+
+-- -----------------------------------------------------------------------------
+-- Exposing
+
+exposePackage :: PackageIdentifier -> PackageDBStack -> IO ()
+exposePackage = error "TODO"
+
+-- -----------------------------------------------------------------------------
+-- Hiding
+
+hidePackage :: PackageIdentifier -> PackageDBStack -> IO ()
+hidePackage = error "TODO"
+
+-- -----------------------------------------------------------------------------
+-- Listing packages
+
+listPackages :: PackageDBStack -> IO ()
+listPackages db_confs = do
+ mapM_ show_pkgconf (reverse db_confs)
+ 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 = text . showPackageId . package
+
+
+-- -----------------------------------------------------------------------------
+-- Describe
+
+describePackage :: PackageDBStack -> PackageIdentifier -> IO ()
+describePackage db_stack pkgid = do
+ p <- findPackage db_stack pkgid
+ putStrLn (showInstalledPackageInfo p)
+
+findPackage :: PackageDBStack -> PackageIdentifier -> IO InstalledPackageInfo
+findPackage db_stack pkgid
+ = case [ p | p <- all_pkgs, pkgid == package p ] of
+ [] -> die ("cannot find package " ++ showPackageId pkgid)
+ (p:ps) -> return p
+ where
+ all_pkgs = concat (map snd db_stack)
+
+-- -----------------------------------------------------------------------------
+-- Field
+
+describeField :: PackageDBStack -> PackageIdentifier -> String -> IO ()
+describeField db_stack pkgid field = do
+ case toField field of
+ Nothing -> die ("unknown field: " ++ field)
+ Just fn -> do
+ p <- findPackage db_stack pkgid
+ putStrLn (fn p)
+
+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 . extraCcOpts
+toField "extra_ld_opts" = Just $ strList . extraLdOpts
+toField "framework_dirs" = Just $ strList . frameworkDirs
+toField "extra_frameworks"= Just $ strList . extraFrameworks
+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\n"))
+
+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...
- renameFile conf_file (conf_file ++ ".old")
+ let oldFile = filename ++ ".old"
+ doesExist <- doesFileExist oldFile `catch` (\ _ -> return False)
+ when doesExist (removeFile oldFile `catch` (const $ return ()))
+ catch (renameFile filename oldFile)
+ (\ err -> do
+ hPutStrLn stderr (unwords [ "Unable to rename "
+ , show filename
+ , " to "
+ , show oldFile
+ ])
+ ioError err)
hPutStrLn stdout "done."
-----------------------------------------------------------------------------
+-- Sanity-check a new package config, and automatically build GHCi libs
+-- if requested.
+
+validatePackageConfig :: InstalledPackageInfo
+ -> PackageDBStack
+ -> Bool -- auto-ghc-libs
+ -> Bool -- update
+ -> Bool -- force
+ -> IO ()
+validatePackageConfig pkg db_stack auto_ghci_libs update force = do
+ 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],
+
+
+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\n")
+ --
+ -- 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 (head 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 $libdir is
+ | otherwise = do
+ there <- doesDirectoryExist d
+ when (not there)
+ (dieOrForce force (d ++ " doesn't exist or isn't a directory\n"))
+
+checkDep :: PackageDBStack -> Bool -> PackageIdentifier -> IO ()
+checkDep db_stack force pkgid
+ | real_version && pkgid `elem` pkgids = return ()
+ | not real_version && pkgName pkgid `elem` pkg_names = return ()
+ | otherwise = dieOrForce force ("dependency " ++ showPackageId pkgid
+ ++ " doesn't exist\n")
+ where
+ -- for backwards compat, we treat 0.0 as a special version,
+ -- and don't check that it actually exists.
+ real_version = realVersion pkgid
+
+ all_pkgs = concat (map snd db_stack)
+ pkgids = map package all_pkgs
+ pkg_names = map pkgName pkgids
+
+realVersion :: PackageIdentifier -> Bool
+realVersion pkgid = versionBranch (pkgVersion pkgid) /= []
+
+checkHSLib :: [String] -> Bool -> Bool -> String -> IO ()
+checkHSLib dirs auto_ghci_libs force lib = do
+ let batch_lib_file = "lib" ++ lib ++ ".a"
+ bs <- mapM (doesLibExistIn batch_lib_file) dirs
+ case [ dir | (exists,dir) <- zip bs dirs, exists ] of
+ [] -> dieOrForce force ("cannot find `" ++ batch_lib_file ++
+ "' on library path")
+ (dir:_) -> checkGHCiLib dirs dir batch_lib_file lib auto_ghci_libs
+
+doesLibExistIn :: String -> String -> IO Bool
+doesLibExistIn lib d
+ | "$libdir" `isPrefixOf` d = return True
+ | otherwise = doesFileExist (d ++ '/':lib)
+
+checkGHCiLib :: [String] -> String -> String -> String -> Bool -> IO ()
+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 ++ "'...")
+#if defined(darwin_TARGET_OS)
+ r <- system("ld -r -x -o " ++ ghci_lib_file ++
+ " -all_load " ++ batch_lib_file)
+#elif defined(mingw32_HOST_OS)
+ execDir <- getExecDir "/bin/ghc-pkg.exe"
+ r <- system (maybe "" (++"/gcc-lib/") execDir++"ld -r -x -o " ++
+ ghci_lib_file ++ " --whole-archive " ++ batch_lib_file)
+#else
+ r <- system("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
+ -- we update dependencies without version numbers to
+ -- match the actual versions of the relevant packages instaled.
+ updateDeps p = p{depends = map resolveDep (depends p)}
+
+ resolveDep pkgid
+ | realVersion pkgid = pkgid
+ | otherwise = lookupDep (pkgName pkgid)
+
+ lookupDep name
+ = head [ pid | p <- concat (map snd db_stack),
+ let pid = package p,
+ pkgName pid == name ]
+
+ 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 config_flags = [ f | Just f <- map conv clis ]
+
+ conv (OF_GlobalConfig f) = Just (FlagGlobalConfig f)
+ conv (OF_Config f) = Just (FlagConfig f)
+ conv _ = Nothing
+
+ db_names <- getPkgDatabases config_flags
+ db_stack <- mapM readParseDatabase db_names
+
+ let fields = [ f | OF_Field f <- clis ]
+
+ let auto_ghci_libs = any isAuto clis
+ where isAuto OF_AutoGHCiLibs = True; isAuto _ = False
+ input_file = head ([ 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 db_stack
+ [ OF_ListLocal ] -> listPackages db_stack
+ [ OF_Add upd ] -> registerPackage input_file defines db_stack
+ auto_ghci_libs upd force
+ [ OF_Remove p ] -> unregisterPackage db_stack (pkgNameToId p)
+ [ OF_Show p ]
+ | null fields -> describePackage db_stack (pkgNameToId p)
+ | otherwise -> mapM_ (describeField db_stack (pkgNameToId p)) fields
+ _ -> do prog <- getProgramName
+ die (usageInfo (usageHeader prog) flags)
+
+-- ---------------------------------------------------------------------------
+
+#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
+ hPutStr 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")
+
-----------------------------------------------------------------------------
--- Exceptions
+-- Create a hierarchy of directories
+
+createParents :: FilePath -> IO ()
+createParents dir = do
+ let parent = directoryOf dir
+ b <- doesDirectoryExist parent
+ when (not b) $ do
+ createParents parent
+ createDirectory parent
-#ifndef __GLASGOW_HASKELL__
+-----------------------------------------
+-- Cut and pasted from ghc/compiler/SysTools
+
+#if defined(mingw32_HOST_OS)
+subst a b ls = map (\ x -> if x == a then b else x) ls
+unDosifyPath xs = subst '\\' '/' xs
+
+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
+getExecDir :: String -> IO (Maybe String)
+getExecDir _ = return Nothing
+#endif
-eval_catch a h = a `seq` return ()
-my_catch = IO.catch
-my_throw = IO.fail
+-- -----------------------------------------------------------------------------
+-- Utils from Krasimir's FilePath library, copied here for now
-#else /* GHC */
+directoryOf :: FilePath -> FilePath
+directoryOf = fst.splitFileName
-my_throw = Exception.throw
-#if __GLASGOW_HASKELL__ > 408
-eval_catch = Exception.catch . Exception.evaluate
-my_catch = Exception.catch
+splitFileName :: FilePath -> (String, String)
+splitFileName p = (reverse (path2++drive), reverse fname)
+ where
+#ifdef mingw32_TARGET_OS
+ (path,drive) = break (== ':') (reverse p)
#else
-eval_catch = Exception.catchAll
-my_catch = Exception.catchAllIO
+ (path,drive) = (reverse p,"")
+#endif
+ (fname,path1) = break isPathSeparator path
+ path2 = case path1 of
+ [] -> "."
+ [_] -> path1 -- don't remove the trailing slash if
+ -- there is only one character
+ (c:path) | isPathSeparator c -> path
+ _ -> path1
+
+joinFileName :: String -> String -> FilePath
+joinFileName "" fname = fname
+joinFileName "." fname = fname
+joinFileName dir fname
+ | isPathSeparator (last dir) = dir++fname
+ | otherwise = dir++pathSeparator:fname
+
+isPathSeparator :: Char -> Bool
+isPathSeparator ch =
+#ifdef mingw32_TARGET_OS
+ ch == '/' || ch == '\\'
+#else
+ ch == '/'
#endif
+pathSeparator :: Char
+#ifdef mingw32_TARGET_OS
+pathSeparator = '\\'
+#else
+pathSeparator = '/'
#endif
projects / ghc-hetmet.git / blobdiff