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{- Freedesktop.org specifications
-
- http://standards.freedesktop.org/basedir-spec/latest/
- http://standards.freedesktop.org/desktop-entry-spec/latest/
- http://standards.freedesktop.org/menu-spec/latest/
-
- Copyright 2012 Joey Hess <joey@kitenet.net>
-
- Licensed under the GNU GPL version 3 or higher.
-}
module Utility.FreeDesktop (
DesktopEntry,
genDesktopEntry,
buildDesktopMenuFile,
writeDesktopMenuFile,
desktopMenuFilePath,
autoStartPath,
systemDataDir,
systemConfigDir,
userDataDir,
userConfigDir
) where
import Utility.Exception
import Utility.Path
import System.Environment
import System.Directory
import System.FilePath
import Data.List
import Data.String.Utils
type DesktopEntry = [(Key, Value)]
type Key = String
data Value = StringV String | BoolV Bool | NumericV Float | ListV [Value]
toString :: Value -> String
toString (StringV s) = s
toString (BoolV b)
| b = "true"
| otherwise = "false"
toString(NumericV f) = show f
toString (ListV l)
| null l = ""
| otherwise = (intercalate ";" $ map (escapesemi . toString) l) ++ ";"
where
escapesemi = join "\\;" . split ";"
genDesktopEntry :: String -> String -> Bool -> FilePath -> [String] -> DesktopEntry
genDesktopEntry name comment terminal program categories =
[ item "Type" StringV "Application"
, item "Version" NumericV 1.0
, item "Name" StringV name
, item "Comment" StringV comment
, item "Terminal" BoolV terminal
, item "Exec" StringV program
, item "Categories" ListV (map StringV categories)
]
where
item x c y = (x, c y)
buildDesktopMenuFile :: DesktopEntry -> String
buildDesktopMenuFile d = unlines ("[Desktop Entry]" : map keyvalue d) ++ "\n"
where
keyvalue (k, v) = k ++ "=" ++ toString v
writeDesktopMenuFile :: DesktopEntry -> String -> IO ()
writeDesktopMenuFile d file = do
createDirectoryIfMissing True (parentDir file)
writeFile file $ buildDesktopMenuFile d
desktopMenuFilePath :: String -> FilePath -> FilePath
desktopMenuFilePath basename datadir =
datadir </> "applications" </> desktopfile basename
autoStartPath :: String -> FilePath -> FilePath
autoStartPath basename configdir =
configdir </> "autostart" </> desktopfile basename
desktopfile :: FilePath -> FilePath
desktopfile f = f ++ ".desktop"
systemDataDir :: FilePath
systemDataDir = "/usr/share"
systemConfigDir :: FilePath
systemConfigDir = "/etc/xdg"
userDataDir :: IO FilePath
userDataDir = do
dir <- xdgEnv "DATA_HOME" =<< myHomeDir
return $ dir </> ".local" </> "share"
userConfigDir :: IO FilePath
userConfigDir = do
dir <- xdgEnv "CONFIG_HOME" =<< myHomeDir
return $ dir </> ".config"
xdgEnv :: String -> String -> IO String
xdgEnv envbase def = catchDefaultIO (getEnv $ "XDG_" ++ envbase) def
|
