From 77df1ac30fa7af5948f7ff64f5fee9aed64552b3 Mon Sep 17 00:00:00 2001 From: jao Date: Sun, 25 Nov 2018 15:10:29 +0000 Subject: Back to app/src, since it seems they're the default convention for stack --- src/Xmobar/Plugins/CommandReader.hs | 40 +++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 src/Xmobar/Plugins/CommandReader.hs (limited to 'src/Xmobar/Plugins/CommandReader.hs') diff --git a/src/Xmobar/Plugins/CommandReader.hs b/src/Xmobar/Plugins/CommandReader.hs new file mode 100644 index 0000000..69c8e0c --- /dev/null +++ b/src/Xmobar/Plugins/CommandReader.hs @@ -0,0 +1,40 @@ +----------------------------------------------------------------------------- +-- | +-- Module : Plugins.CommandReader +-- Copyright : (c) John Goerzen +-- License : BSD-style (see LICENSE) +-- +-- Maintainer : Jose A. Ortega Ruiz +-- Stability : unstable +-- Portability : unportable +-- +-- A plugin for reading from external commands +-- note: stderr is lost here +-- +----------------------------------------------------------------------------- + +module Xmobar.Plugins.CommandReader(CommandReader(..)) where + +import System.IO +import Xmobar.Run.Commands +import Xmobar.Utils (hGetLineSafe) +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" -- cgit v1.2.3