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authorjao <jao@gnu.org>2018-11-21 23:51:41 +0000
committerjao <jao@gnu.org>2018-11-21 23:51:41 +0000
commit50134d5b5c4baabdfb35c0aeb8bf53d29f009c4d (patch)
treea710ee9a8e9ea9e46951d371af29081e1c72f502 /src/Xmobar/Plugins/CommandReader.hs
parent7674145b878fd315999558075edcfc5e09bdd91c (diff)
downloadxmobar-50134d5b5c4baabdfb35c0aeb8bf53d29f009c4d.tar.gz
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All sources moved inside src
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diff --git a/src/Xmobar/Plugins/CommandReader.hs b/src/Xmobar/Plugins/CommandReader.hs
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------------------------------------------------------------------------------
--- |
--- Module : Plugins.CommandReader
--- Copyright : (c) John Goerzen
--- License : BSD-style (see LICENSE)
---
--- Maintainer : Jose A. Ortega Ruiz <jao@gnu.org>
--- Stability : unstable
--- Portability : unportable
---
--- A plugin for reading from external commands
--- note: stderr is lost here
---
------------------------------------------------------------------------------
-
-module Xmobar.Plugins.CommandReader where
-
-import System.IO
-import Xmobar.Plugins
-import System.Process(runInteractiveCommand, getProcessExitCode)
-
-data CommandReader = CommandReader String String
- deriving (Read, Show)
-
-instance Exec CommandReader where
- alias (CommandReader _ a) = a
- start (CommandReader p _) cb = do
- (hstdin, hstdout, hstderr, ph) <- runInteractiveCommand p
- hClose hstdin
- hClose hstderr
- hSetBinaryMode hstdout False
- hSetBuffering hstdout LineBuffering
- forever ph (hGetLineSafe hstdout >>= cb)
- where forever ph a =
- do a
- ec <- getProcessExitCode ph
- case ec of
- Nothing -> forever ph a
- Just _ -> cb "EXITED"