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|
{-# LANGUAGE CPP #-}
module CabalHelper.Licenses where
-- Copyright (c) 2014, Jasper Van der Jeugt <m@jaspervdj.be>
--------------------------------------------------------------------------------
import Control.Arrow ((***), (&&&))
import Control.Monad (forM_, unless)
import Data.List (foldl', sort)
import Data.Maybe (catMaybes)
import Data.Version (Version)
import Data.Set (Set)
import qualified Data.Set as Set
import Distribution.InstalledPackageInfo (InstalledPackageInfo)
import qualified Distribution.InstalledPackageInfo as InstalledPackageInfo
import qualified Distribution.License as Cabal
import qualified Distribution.Package as Cabal
import qualified Distribution.Simple.Configure as Cabal
import qualified Distribution.Simple.LocalBuildInfo as Cabal
import qualified Distribution.Simple.PackageIndex as Cabal
import qualified Distribution.Text as Cabal
import System.Directory (getDirectoryContents)
import System.Exit (exitFailure)
import System.FilePath (takeExtension)
import System.IO (hPutStrLn, stderr)
--------------------------------------------------------------------------------
#if CABAL_MAJOR == 1 && CABAL_MINOR >= 22
type PackageIndex a = Cabal.PackageIndex (InstalledPackageInfo.InstalledPackageInfo_ a)
#else
type PackageIndex a = Cabal.PackageIndex
#endif
findTransitiveDependencies
:: PackageIndex a
-> Set Cabal.InstalledPackageId
-> Set Cabal.InstalledPackageId
findTransitiveDependencies pkgIdx set0 = go Set.empty (Set.toList set0)
where
go set [] = set
go set (q : queue)
| q `Set.member` set = go set queue
| otherwise =
case Cabal.lookupInstalledPackageId pkgIdx q of
Nothing ->
-- Not found can mean that the package still needs to be
-- installed (e.g. a component of the target cabal package).
-- We can ignore those.
go set queue
Just ipi ->
go (Set.insert q set)
(InstalledPackageInfo.depends ipi ++ queue)
--------------------------------------------------------------------------------
getDependencyInstalledPackageIds
:: Cabal.LocalBuildInfo -> Set Cabal.InstalledPackageId
getDependencyInstalledPackageIds lbi =
findTransitiveDependencies (Cabal.installedPkgs lbi) $
Set.fromList $ map fst $ Cabal.externalPackageDeps lbi
--------------------------------------------------------------------------------
getDependencyInstalledPackageInfos
:: Cabal.LocalBuildInfo -> [InstalledPackageInfo]
getDependencyInstalledPackageInfos lbi = catMaybes $
map (Cabal.lookupInstalledPackageId pkgIdx) $
Set.toList (getDependencyInstalledPackageIds lbi)
where
pkgIdx = Cabal.installedPkgs lbi
--------------------------------------------------------------------------------
groupByLicense
:: [InstalledPackageInfo]
-> [(Cabal.License, [InstalledPackageInfo])]
groupByLicense = foldl'
(\assoc ipi -> insert (InstalledPackageInfo.license ipi) ipi assoc) []
where
-- 'Cabal.License' doesn't have an 'Ord' instance so we need to use an
-- association list instead of 'Map'. The number of licenses probably won't
-- exceed 100 so I think we're alright.
insert :: Eq k => k -> v -> [(k, [v])] -> [(k, [v])]
insert k v [] = [(k, [v])]
insert k v ((k', vs) : kvs)
| k == k' = (k, v : vs) : kvs
| otherwise = (k', vs) : insert k v kvs
--------------------------------------------------------------------------------
displayDependencyLicenseList
:: [(Cabal.License, [InstalledPackageInfo])]
-> [(String, [(String, Version)])]
displayDependencyLicenseList =
map (Cabal.display *** map (getName &&& getVersion))
where
getName =
Cabal.display . Cabal.pkgName . InstalledPackageInfo.sourcePackageId
getVersion =
Cabal.pkgVersion . InstalledPackageInfo.sourcePackageId
|
