#!/bin/sh -e
#
#    uptime: condensed uptime of the machine
#
#    Copyright (C) 2009 Raphaël Pinson.
#    Copyright (C) 2009 Canonical Ltd.
#    Copyright (C) 2011-2014 Dustin Kirkland
#
#    Authors: Raphaël Pinson <raphink@ubuntu.com>
#             Dustin Kirkland <kirkland@byobu.org>
#
#    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/>.

__uptime_detail() {
	uptime
}

__uptime() {
	local u= idle= str=
	if [ -r /proc/uptime ]; then
		read u idle < /proc/uptime
		u=${u%.*}
	elif [ "$BYOBU_OSTYPE" = "OpenBSD" ]; then
		# OpenBSD: kern.boottime is epoch seconds directly
		local bt
		bt=$(sysctl -n kern.boottime 2>/dev/null)
		[ -n "$bt" ] && u=$(($(date +%s) - bt))
	elif [ -x /usr/sbin/sysctl ]; then
		# MacOS support
		u=$(/usr/sbin/sysctl -n kern.boottime | cut -f4 -d' ' | cut -d',' -f1)
		u=$(($(date +%s) - $u))
	fi
	if [ "$u" ]; then
		if [ "$u" -gt 86400 ]; then
			str="$(($u / 86400))d$((($u % 86400) / 3600))h"
		elif [ "$u" -gt 3600 ]; then
			str="$(($u / 3600))h$((($u % 3600) / 60))m"
		elif [ "$u" -gt 60 ]; then
			str="$(($u / 60))m"
		else
			str="${u}s"
		fi
	else
		# Last ditch hack
		str=$(uptime | sed -e "s/.* up *//" -e "s/ *days, */d/" -e "s/:/h/" -e "s/,.*/m/")
	fi
	[ -n "$str" ] || return
	color w b; printf "%s" "${str}"; color --
}

# vi: syntax=sh ts=4 noexpandtab
