Script to watch for xscreensaver lock/unblank events and update pidgin statuses

xscreensaver-watch.sh

#!/bin/bash
#
# Handles setting pidgin statuses based on lock/unblank events from
# xscreensaver
#
# Customization of gist found here by Ron DuPlain:
# https://gist.github.com/rduplain/3852987
#

lock()
{
    state="locked"
    status=$(/usr/bin/purple-remote getstatus)
    message=$(/usr/bin/purple-remote getstatusmessage)

    $(/usr/bin/purple-remote setstatus?status=away)
}

unblank()
{
    if [ "$state" == "locked" ];
    then
        state=""
        $(/usr/bin/purple-remote setstatus?status=$status&message=$message)
    fi
}

xscreensaver-command -watch | while read a 
do
    echo "$a" | grep -q '^LOCK' && lock
    echo "$a" | grep -q '^UNBLANK' && unblank
done