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{- Package version determination, for configure script. -}
module Build.Version where
import Data.Maybe
import Control.Applicative
import Data.List
import System.Environment
import System.Directory
import Data.Char
import System.Process
import Build.TestConfig
import Utility.Monad
import Utility.Exception
{- Set when making an official release. (Distribution vendors should set
- this too.) -}
isReleaseBuild :: IO Bool
isReleaseBuild = isJust <$> catchMaybeIO (getEnv "RELEASE_BUILD")
{- Version is usually based on the major version from the changelog,
- plus the date of the last commit, plus the git rev of that commit.
- This works for autobuilds, ad-hoc builds, etc.
-
- If git or a git repo is not available, or something goes wrong,
- or this is a release build, just use the version from the changelog. -}
getVersion :: Test
getVersion = do
changelogversion <- getChangelogVersion
version <- ifM (isReleaseBuild)
( return changelogversion
, catchDefaultIO changelogversion $ do
let major = takeWhile (/= '.') changelogversion
autoversion <- readProcess "sh"
[ "-c"
, "git log -n 1 --format=format:'%ci %h'| sed -e 's/-//g' -e 's/ .* /-g/'"
] ""
if null autoversion
then return changelogversion
else return $ concat [ major, ".", autoversion ]
)
return $ Config "packageversion" (StringConfig version)
getChangelogVersion :: IO String
getChangelogVersion = do
changelog <- readFile "debian/changelog"
let verline = takeWhile (/= '\n') changelog
return $ middle (words verline !! 1)
where
middle = drop 1 . init
{- Set up cabal file with version. -}
cabalSetup :: FilePath -> IO ()
cabalSetup cabalfile = do
version <- takeWhile (\c -> isDigit c || c == '.')
<$> getChangelogVersion
cabal <- readFile cabalfile
writeFile tmpcabalfile $ unlines $
map (setfield "Version" version) $
lines cabal
renameFile tmpcabalfile cabalfile
where
tmpcabalfile = cabalfile++".tmp"
setfield field value s
| fullfield `isPrefixOf` s = fullfield ++ value
| otherwise = s
where
fullfield = field ++ ": "
|
