bin/load_average_full: New status notification to show load average with three values

This new status notification shows the three values of the load average.

In addition, their colors are changed if load average exceeds 0 (yellow)
and 1 (red) values. Default color is green.

usr/lib/byobu/load_average_full

@@ -0,0 +1,53 @@
+#!/bin/sh
+#
+#    load_average: grab the current load average (three values)
+#
+#    Copyright (C) 2008 Canonical Ltd.
+#    Copyright (C) 2011-2014 Dustin Kirkland
+#
+#    Authors: Dustin Kirkland <kirkland@byobu.co>
+#             Diego Lago <diego.lago.gonzalez@gmail.com>
+#
+#    This program is free software: you can redistribute it and/or modify
+#    it under the terms of the GNU General Public License as published by
+#    the Free Software Foundation, version 3 of the License.
+#
+#    This program is distributed in the hope that it will be useful,
+#    but WITHOUT ANY WARRANTY; without even the implied warranty of
+#    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+#    GNU General Public License for more details.
+#
+#    You should have received a copy of the GNU General Public License
+#    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+COLOR_THRESHOLD_MEDIUM=0
+COLOR_THRESHOLD_HIGH=1
+
+__calc_color() {
+	[ -n "$1" ] || echo g
+	local loadint="$(echo $1 | cut -d'.' -f1)"
+	local bgcolor=g
+	[ $loadint -gt $COLOR_THRESHOLD_MEDIUM ] && bgcolor=y
+	[ $loadint -gt $COLOR_THRESHOLD_HIGH ] && bgcolor=r
+	color $bgcolor w
+}
+
+__load_average_detail() {
+	cat /proc/loadavg
+}
+
+__load_average() {
+	if [ -r "/proc/loadavg" ]; then
+		read one five fifteen other < /proc/loadavg
+	else
+		read one five fifteen <<< $(uptime | sed -e 's/.*://' -e 's/,\ /\ /g' | awk '{print $1" "$2" "$3}')
+	fi
+	[ -n "$one" ] || return
+	local color_reset=$(color --)
+	local color_one=$(__calc_color $one)
+	local color_five=$(__calc_color $five)
+	local color_fifteen=$(__calc_color $fifteen)
+	printf "$color_one$one$color_reset$color_five$five$color_reset$color_fifteen$fifteen$color_reset "
+}
+
+# vi: syntax=sh ts=4 noexpandtab