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author | jao <jao@gnu.org> | 2018-11-25 15:10:29 +0000 |
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committer | jao <jao@gnu.org> | 2018-11-25 15:10:29 +0000 |
commit | 77df1ac30fa7af5948f7ff64f5fee9aed64552b3 (patch) | |
tree | 647a4eb67ff1c293a5c530538ee88fc0093b577a /src/Xmobar/Plugins/CommandReader.hs | |
parent | e0d6da82de8d0d1cef98896164c6016b84e47068 (diff) | |
download | xmobar-77df1ac30fa7af5948f7ff64f5fee9aed64552b3.tar.gz xmobar-77df1ac30fa7af5948f7ff64f5fee9aed64552b3.tar.bz2 |
Back to app/src, since it seems they're the default convention for stack
Diffstat (limited to 'src/Xmobar/Plugins/CommandReader.hs')
-rw-r--r-- | src/Xmobar/Plugins/CommandReader.hs | 40 |
1 files changed, 40 insertions, 0 deletions
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 <jao@gnu.org> +-- 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" |