From 50134d5b5c4baabdfb35c0aeb8bf53d29f009c4d Mon Sep 17 00:00:00 2001
From: jao <jao@gnu.org>
Date: Wed, 21 Nov 2018 23:51:41 +0000
Subject: All sources moved inside src

---
 src/lib/Xmobar/Plugins/StdinReader.hs | 44 +++++++++++++++++++++++++++++++++++
 1 file changed, 44 insertions(+)
 create mode 100644 src/lib/Xmobar/Plugins/StdinReader.hs

(limited to 'src/lib/Xmobar/Plugins/StdinReader.hs')

diff --git a/src/lib/Xmobar/Plugins/StdinReader.hs b/src/lib/Xmobar/Plugins/StdinReader.hs
new file mode 100644
index 0000000..372e4f9
--- /dev/null
+++ b/src/lib/Xmobar/Plugins/StdinReader.hs
@@ -0,0 +1,44 @@
+-----------------------------------------------------------------------------
+-- |
+-- Module      :  Plugins.StdinReader
+-- Copyright   :  (c) Andrea Rossato
+-- License     :  BSD-style (see LICENSE)
+--
+-- Maintainer  :  Jose A. Ortega Ruiz <jao@gnu.org>
+-- Stability   :  unstable
+-- Portability :  unportable
+--
+-- A plugin for reading from `stdin`.
+--
+-- Exports:
+-- - `StdinReader` to safely display stdin content (striping actions).
+-- - `UnsafeStdinReader` to display stdin content as-is.
+--
+-----------------------------------------------------------------------------
+
+module Xmobar.Plugins.StdinReader (StdinReader(..)) where
+
+import Prelude
+import System.Posix.Process
+import System.Exit
+import System.IO
+import Control.Exception (SomeException(..), handle)
+import Xmobar.Plugins
+import Xmobar.Actions (stripActions)
+
+data StdinReader = StdinReader | UnsafeStdinReader
+  deriving (Read, Show)
+
+instance Exec StdinReader where
+  start stdinReader cb = do
+    s <- handle (\(SomeException e) -> do hPrint stderr e; return "")
+                (hGetLineSafe stdin)
+    cb $ escape stdinReader s
+    eof <- isEOF
+    if eof
+      then exitImmediately ExitSuccess
+      else start stdinReader cb
+
+escape :: StdinReader -> String -> String
+escape StdinReader = stripActions
+escape UnsafeStdinReader = id
-- 
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