From 98e26ee0436822b00d4a6e707d86cf33d24bc00f Mon Sep 17 00:00:00 2001
From: "Adrian C. (anrxc)" <anrxc@sysphere.org>
Date: Wed, 29 Jul 2009 17:59:32 +0200
Subject: Import of vicious source tree.

Vicious is a modular widget library for 'awesome' window manager,
derived from the 'Wicked' widget library.

Summary of changes:
  * Original wicked code modularized
  * Widgets ported from Wicked:
    - CPU, MEM, FS, NET, Date, Uptime, MPD
      * CPU widget rewritten, uses pattern matching
      * MEM widget rewritten, uses pattern matching
        - Swap widget merged with MEM widget type
      * FS widget rewritten, uses pattern matching
        - Also fixed padding in the process
      * NET widget rewritten, uses pattern matching
      * MPD widget rewritten, a bit more versatile
      * Removed deprecated helper functions
  * Widgets written for Vicious:
    - Thermal, Battery, Mbox, OrgMode, Volume, Entropy,
      Disk I/O, System Load, Wireless, Pacman, Maildir
---
 entropy.lua | 37 +++++++++++++++++++++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 entropy.lua

(limited to 'entropy.lua')

diff --git a/entropy.lua b/entropy.lua
new file mode 100644
index 0000000..43bdb80
--- /dev/null
+++ b/entropy.lua
@@ -0,0 +1,37 @@
+----------------------------------------------------------
+-- Licensed under the GNU General Public License version 2
+--  * Copyright (C) 2009 Adrian C. <anrxc_sysphere_org>
+----------------------------------------------------------
+
+-- {{{ Grab environment
+local io = { open = io.open }
+local math = { floor = math.floor }
+local string = { format = string.format }
+-- }}}
+
+
+-- Entropy: provides available system entropy
+module("vicious.entropy")
+
+
+-- {{{ Entropy widget type
+function worker(format, poolsize)
+    -- Don't waste time opening the poolsize, Linux 2.6 has a default
+    -- entropy pool of 4096-bits, if needed specify otherwise
+    if poolsize == nil then
+        poolsize = 4096
+    end
+
+    -- Get available entropy
+    local f = io.open("/proc/sys/kernel/random/entropy_avail")
+    local ent_avail = f:read()
+    f:close()
+
+    -- Calculate percentage
+    ent_avail_percent = math.floor(ent_avail * 100 / poolsize)
+    -- This data is intended for a progressbar
+    ent_avail_percent = string.format("%0d", ent_avail_percent)
+
+    return {ent_avail, ent_avail_percent}
+end
+-- }}}
-- 
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