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{- arch-tag: dpkg querying
Copyright (C) 2004 John Goerzen <jgoerzen@complete.org>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
-}
module Dpkg where
-- Interface to Dpkg/Apt
import MissingH.Cmd
import MissingH.Debian.ControlParser
import MissingH.Maybe
import MissingH.Logging.Logger
import MissingH.Str
import Text.Regex
import Utils
-- | Gets the installed version of a package, if any
getInstalledVer :: String -> IO (Maybe String)
getInstalledVer package =
do d <- readdata $ "dpkg -s " ++ package
case d of
Nothing -> return Nothing
Just x -> return $
if endswith "installed" $ forceMaybe $ lookup "Status" (parseControl x)
then lookup "Version" (parseControl x)
else Nothing
-- | Gets the available version of a package, if any
getAvailableVer :: String -> IO (Maybe String)
getAvailableVer package =
do d <- readdata $ "apt-cache showsrc " ++ package
case d of
Nothing -> return Nothing
Just x -> return $ lookup "Version" (parseControl x)
-- | Gets the build-deps of a package, if any
getBuildDeps :: String -> IO [String]
getBuildDeps package =
do d <- readdata $ "apt-cache showsrc " ++ package
case d of
Nothing -> return []
Just x -> let parsed = parseControl x
splitted y = map strip . split "," . filter (/= ' ')
$ y
find y = case lookup y parsed of
Nothing -> []
Just z -> splitted z
in
return $ find "Build-Depends" ++
find "Build-Depends-Indep"
pkgVerToFilename :: String -> String -> String
pkgVerToFilename package version =
let newvers = subRe (mkRegex "^[0-9]+:") version ""
in
package ++ "_" ++ newvers ++ "_*.deb"
-- | Gets the deps for a .deb, if any
getDebDeps :: String -> String -> IO [String]
getDebDeps package version =
do d <- readdata $ "dpkg -f " ++ (pkgVerToFilename package version)
case d of
Nothing -> return []
Just x -> let parsed = parseControl x
splitted y = map strip . split "," .
filter (/= ' ')$ y
find y = case lookup y parsed of
Nothing -> []
Just z -> splitted z
in
return $ find "Depends"
|
