mirror of
https://github.com/xmonad/xmonad-contrib.git
synced 2025-05-19 03:20:21 -07:00
28b3e34fd7
Prompts based on `mkComplFunList` and `mkComplFunList'` were not taking into account the `searchPredicate` funtion from `XPConfig`. This was rather confusing. We fix it by passing `XPConfig` to these functions; although this is strictly more than they need, it makes the breaking change very easy to fix and is also more future-proof.
117 lines
3.5 KiB
Haskell
117 lines
3.5 KiB
Haskell
-----------------------------------------------------------------------------
|
|
-- |
|
|
-- Module : XMonad.Prompt.Man
|
|
-- Copyright : (c) 2007 Valery V. Vorotyntsev
|
|
-- License : BSD3-style (see LICENSE)
|
|
--
|
|
-- Maintainer : Valery V. Vorotyntsev <valery.vv@gmail.com>
|
|
-- Portability : non-portable (uses "manpath" and "bash")
|
|
--
|
|
-- A manual page prompt for XMonad window manager.
|
|
--
|
|
-- TODO
|
|
--
|
|
-- * narrow completions by section number, if the one is specified
|
|
-- (like @\/etc\/bash_completion@ does)
|
|
-----------------------------------------------------------------------------
|
|
|
|
module XMonad.Prompt.Man (
|
|
-- * Usage
|
|
-- $usage
|
|
manPrompt
|
|
, getCommandOutput
|
|
, Man
|
|
) where
|
|
|
|
|
|
import XMonad
|
|
import XMonad.Prompt
|
|
import XMonad.Util.Run
|
|
import XMonad.Prompt.Shell (split)
|
|
|
|
import System.Directory
|
|
import System.Process
|
|
import System.IO
|
|
|
|
import qualified Control.Exception.Extensible as E
|
|
import Control.Monad
|
|
import Data.List
|
|
import Data.Maybe
|
|
|
|
-- $usage
|
|
-- 1. In your @~\/.xmonad\/xmonad.hs@:
|
|
--
|
|
-- > import XMonad.Prompt
|
|
-- > import XMonad.Prompt.Man
|
|
--
|
|
-- 2. In your keybindings add something like:
|
|
--
|
|
-- > , ((modm, xK_F1), manPrompt def)
|
|
--
|
|
-- For detailed instruction on editing the key binding see
|
|
-- "XMonad.Doc.Extending#Editing_key_bindings".
|
|
|
|
data Man = Man
|
|
|
|
instance XPrompt Man where
|
|
showXPrompt Man = "Manual page: "
|
|
|
|
-- | Query for manual page to be displayed.
|
|
manPrompt :: XPConfig -> X ()
|
|
manPrompt c = do
|
|
mans <- io getMans
|
|
mkXPrompt Man c (manCompl c mans) $ runInTerm "" . (++) "man "
|
|
|
|
getMans :: IO [String]
|
|
getMans = do
|
|
paths <- do
|
|
let getout cmd = getCommandOutput cmd `E.catch` \E.SomeException{} -> return ""
|
|
-- one of these combinations should give some output
|
|
p1 <- getout "manpath -g 2>/dev/null"
|
|
p2 <- getout "manpath 2>/dev/null"
|
|
return $ intercalate ":" $ lines $ p1 ++ p2
|
|
let sects = ["man" ++ show n | n <- [1..9 :: Int]]
|
|
dirs = [d ++ "/" ++ s | d <- split ':' paths, s <- sects]
|
|
mans <- forM (nub dirs) $ \d -> do
|
|
exists <- doesDirectoryExist d
|
|
if exists
|
|
then map (stripExt . stripSuffixes [".gz", ".bz2"]) <$>
|
|
getDirectoryContents d
|
|
else return []
|
|
return $ uniqSort $ concat mans
|
|
|
|
manCompl :: XPConfig -> [String] -> String -> IO [String]
|
|
manCompl c mans s | s == "" || last s == ' ' = return []
|
|
| otherwise = do
|
|
-- XXX readline instead of bash's compgen?
|
|
f <- lines <$> getCommandOutput ("bash -c 'compgen -A file " ++ s ++ "'")
|
|
mkComplFunFromList c (f ++ mans) s
|
|
|
|
-- | Run a command using shell and return its output.
|
|
--
|
|
-- XXX Merge into 'XMonad.Util.Run'?
|
|
--
|
|
-- (Ask \"gurus\" whether @evaluate (length ...)@ approach is
|
|
-- better\/more idiomatic.)
|
|
getCommandOutput :: String -> IO String
|
|
getCommandOutput s = do
|
|
-- we can ignore the process handle because we ignor SIGCHLD
|
|
(pin, pout, perr, _) <- runInteractiveCommand s
|
|
hClose pin
|
|
output <- hGetContents pout
|
|
E.evaluate (length output)
|
|
hClose perr
|
|
return output
|
|
|
|
stripExt :: String -> String
|
|
stripExt = reverse . drop 1 . dropWhile (/= '.') . reverse
|
|
|
|
stripSuffixes :: Eq a => [[a]] -> [a] -> [a]
|
|
stripSuffixes sufs fn =
|
|
head . catMaybes $ map (flip rstrip fn) sufs ++ [Just fn]
|
|
|
|
rstrip :: Eq a => [a] -> [a] -> Maybe [a]
|
|
rstrip suf lst
|
|
| suf `isSuffixOf` lst = Just $ take (length lst - length suf) lst
|
|
| otherwise = Nothing
|