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module Portage.EBuild
( EBuild(..)
, ebuildTemplate
, src_uri
) where
import Distribution.Text ( Text(..), display )
import qualified Text.PrettyPrint as Disp
import Portage.Dependency
import Distribution.License as Cabal
import Data.String.Utils
import Data.Version(Version(..))
import qualified Paths_hackport(version)
data EBuild = EBuild {
name :: String,
hackage_name :: String, -- might differ a bit (we mangle case)
version :: String,
hackportVersion :: String,
description :: String,
long_desc :: String,
homepage :: String,
license :: Cabal.License,
slot :: String,
keywords :: [String],
iuse :: [String],
depend :: [Dependency],
depend_extra :: [String],
rdepend :: [Dependency],
rdepend_extra :: [String],
features :: [String],
my_pn :: Maybe String -- ^ Just 'myOldName' if the package name contains upper characters
}
getHackportVersion :: Version -> String
getHackportVersion Version {versionBranch=(x:s)} = foldl (\y z -> y ++ "." ++ (show z)) (show x) s
getHackportVersion Version {versionBranch=[]} = ""
ebuildTemplate :: EBuild
ebuildTemplate = EBuild {
name = "foobar",
hackage_name = "FooBar",
version = "0.1",
hackportVersion = getHackportVersion Paths_hackport.version,
description = "",
long_desc = "",
homepage = "http://hackage.haskell.org/package/${HACKAGE_N}",
license = Cabal.UnknownLicense "xxx UNKNOWN xxx",
slot = "0",
keywords = ["~amd64","~x86"],
iuse = [],
depend = [],
depend_extra = [],
rdepend = [],
rdepend_extra = [],
features = [],
my_pn = Nothing
}
instance Text EBuild where
disp = Disp.text . showEBuild
-- | Given an EBuild, give the URI to the tarball of the source code.
-- Assumes that the server is always hackage.haskell.org.
src_uri :: EBuild -> String
src_uri e =
case my_pn e of
-- use standard address given that the package name has no upper
-- characters
Nothing -> "http://hackage.haskell.org/packages/archive/${PN}/${PV}/${P}.tar.gz"
-- use MY_X variables (defined in showEBuild) as we've renamed the
-- package
Just _ -> "http://hackage.haskell.org/packages/archive/${MY_PN}/${PV}/${MY_P}.tar.gz"
showEBuild :: EBuild -> String
showEBuild ebuild =
ss "# Copyright 1999-2012 Gentoo Foundation". nl.
ss "# Distributed under the terms of the GNU General Public License v2". nl.
ss "# $Header: $". nl.
nl.
ss "EAPI=4". nl.
nl.
ss ("# ebuild generated by hackport " ++ hackportVersion ebuild). nl.
nl.
ss "CABAL_FEATURES=". quote' (sepBy " " $ features ebuild). nl.
ss "inherit haskell-cabal". nl.
nl.
(case my_pn ebuild of
Nothing -> id
Just pn -> ss "MY_PN=". quote pn. nl.
ss "MY_P=". quote "${MY_PN}-${PV}". nl. nl).
ss "DESCRIPTION=". quote (description ebuild). nl.
ss "HOMEPAGE=". quote (expandVars (homepage ebuild)). nl.
ss "SRC_URI=". quote (toMirror $ src_uri ebuild). nl.
nl.
ss "LICENSE=". quote (convertLicense . license $ ebuild).
(if null (licenseComment . license $ ebuild) then id
else ss "\t#". ss (licenseComment . license $ ebuild)). nl.
ss "SLOT=". quote (slot ebuild). nl.
ss "KEYWORDS=". quote' (sepBy " " $ keywords ebuild).nl.
ss "IUSE=". quote' (sepBy ", " $ iuse ebuild). nl.
nl.
dep_str "RDEPEND" (rdepend_extra ebuild) (rdepend ebuild).
dep_str "DEPEND" ( depend_extra ebuild) ( depend ebuild).
(case my_pn ebuild of
Nothing -> id
Just _ -> nl. ss "S=". quote ("${WORKDIR}/${MY_P}"). nl)
$ []
where expandVars = replaceMultiVars [ ( name ebuild, "${PN}")
, (hackage_name ebuild, "${HACKAGE_N}")
]
toMirror = replace "http://hackage.haskell.org/" "mirror://hackage/"
ss :: String -> String -> String
ss = showString
sc :: Char -> String -> String
sc = showChar
nl :: String -> String
nl = sc '\n'
dep_str :: String -> [String] -> [Dependency] -> (String -> String)
dep_str var extra deps = ss var. sc '='. quote' (sepBy "\n\t\t" $ extra ++ map display deps). nl
quote :: String -> String -> String
quote str = sc '"'. ss (esc str). sc '"'
where
esc = concatMap esc'
esc' '"' = "\""
esc' c = [c]
quote' :: (String -> String) -> String -> String
quote' str = sc '"'. str. sc '"'
sepBy :: String -> [String] -> ShowS
sepBy _ [] = id
sepBy _ [x] = ss x
sepBy s (x:xs) = ss x. ss s. sepBy s xs
getRestIfPrefix ::
String -> -- ^ the prefix
String -> -- ^ the string
Maybe String
getRestIfPrefix (p:ps) (x:xs) = if p==x then getRestIfPrefix ps xs else Nothing
getRestIfPrefix [] rest = Just rest
getRestIfPrefix _ [] = Nothing
subStr ::
String -> -- ^ the search string
String -> -- ^ the string to be searched
Maybe (String,String) -- ^ Just (pre,post) if string is found
subStr sstr str = case getRestIfPrefix sstr str of
Nothing -> if null str then Nothing else case subStr sstr (tail str) of
Nothing -> Nothing
Just (pre,post) -> Just (head str:pre,post)
Just rest -> Just ([],rest)
replaceMultiVars ::
[(String,String)] -> -- ^ pairs of variable name and content
String -> -- ^ string to be searched
String -- ^ the result
replaceMultiVars [] str = str
replaceMultiVars whole@((pname,cont):rest) str = case subStr cont str of
Nothing -> replaceMultiVars rest str
Just (pre,post) -> (replaceMultiVars rest pre)++pname++(replaceMultiVars whole post)
-- map the cabal license type to the gentoo license string format
convertLicense :: Cabal.License -> String
convertLicense (Cabal.GPL mv) = "GPL-" ++ (maybe "2" display mv) -- almost certainly version 2
convertLicense (Cabal.LGPL mv) = "LGPL-" ++ (maybe "2.1" display mv) -- probably version 2.1
convertLicense Cabal.BSD3 = "BSD"
convertLicense Cabal.BSD4 = "BSD-4"
convertLicense Cabal.PublicDomain = "public-domain"
convertLicense Cabal.AllRightsReserved = ""
convertLicense Cabal.MIT = "MIT"
convertLicense _ = ""
licenseComment :: Cabal.License -> String
licenseComment Cabal.AllRightsReserved =
"Note: packages without a license cannot be included in portage"
licenseComment Cabal.OtherLicense =
"Fixme: \"OtherLicense\", please fill in manually"
licenseComment (Cabal.UnknownLicense _) = "Fixme: license unknown to cabal"
licenseComment _ = ""
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