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authorJose Antonio Ortega Ruiz <jao@gnu.org>2010-12-21 02:36:35 +0100
committerJose Antonio Ortega Ruiz <jao@gnu.org>2010-12-21 02:36:35 +0100
commite3853a9cb2a9a2cffa174d1334e2ca8ba610f151 (patch)
tree13aa04faea320afe85636e23686280386c1c2910 /Plugins/CommandReader.hs
parent598bfe5deeff079280e8513c55dc7bda3e8cf9a0 (diff)
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Haskell sources moved to src/ to unclutter toplevel
Diffstat (limited to 'Plugins/CommandReader.hs')
-rw-r--r--Plugins/CommandReader.hs39
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diff --git a/Plugins/CommandReader.hs b/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 Plugins.CommandReader where
-
-import System.IO
-import 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"