From: Luca CPZ <1777696+lcpz@users.noreply.github.com>
Date: Tue, 23 Jan 2018 10:15:45 +0000 (+0100)
Subject: Merge pull request #381 from cool-cool-sweat/helpers-change
X-Git-Url: https://git.madduck.net/etc/awesome.git/commitdiff_plain/8f26f83f38be36a6c73f4c1dfe1032a5b8fb2a17?hp=d99ce8fdba3d86c7837a1ee60c398fa477365eab

Merge pull request #381 from cool-cool-sweat/helpers-change

helpers.lua: add line_callback and edit async and async_with_shell to return exit codes
---

diff --git a/helpers.lua b/helpers.lua
index ab87f76..b5b663d 100644
--- a/helpers.lua
+++ b/helpers.lua
@@ -5,7 +5,7 @@
 
 --]]
 
-local spawn = require("awful.spawn")
+local spawn      = require("awful.spawn")
 local timer      = require("gears.timer")
 local debug      = require("debug")
 local io         = { lines = io.lines,
@@ -112,7 +112,7 @@ end
 function helpers.async(cmd, callback)
     return spawn.easy_async(cmd,
     function (stdout, stderr, reason, exit_code)
-        callback(stdout)
+        callback(stdout, exit_code)
     end)
 end
 
@@ -120,10 +120,19 @@ end
 function helpers.async_with_shell(cmd, callback)
     return spawn.easy_async_with_shell(cmd,
     function (stdout, stderr, reason, exit_code)
-        callback(stdout)
+        callback(stdout, exit_code)
     end)
 end
 
+-- run a command and execute a function on its output line by line
+function helpers.line_callback(cmd, callback)
+    return spawn.with_line_callback(cmd, {
+        stdout = function (line)
+            callback(line)
+        end,
+    })
+end
+
 -- }}}
 
 -- {{{ A map utility