update-wallpapers

update-wallpapers.sh

#!/bin/bash
#
# (re)generates a .xml file pointing to a list of wallpapers found withing ~/.wallpapers, these pictures
# should then be visible within the 'Wallpapers' tab of the gnome wallpaper switcher. 
#
# This needs to be ran as root.
# Optionally you can change the permissions of the directory '/usr/share/gnome-background-properties/'
# and it's contents to allow user r/w
# 
WALLPAPERS="$HOME/.wallpapers"
if [ ! -d "$WALLPAPERS" ] && [ ! $(mkdir -m=777 "$WALLPAPERS") ]
then 
	echo "ERROR: Couldn't create wallpapers directory: $WALLPAPERS"
	exit -1; 
fi
{
	echo '<wallpapers>'
	while read -rd $'\0' path
	do
		echo '	<wallpaper>'
		echo "		<name>${path#[.]*}</name>"
		echo "		<filename>${path}</filename>"
		echo '		<pcolor>#000000</pcolor>'
		echo '		<scolor>#000000</scolor>'
		echo '		<options>zoom</options>'
		echo '		<shade_type>solid</shade_type>'
		echo '	</wallpaper>'
	done < <(find "$WALLPAPERS" -type f -regextype posix-extended -regex '.*[.](jpg|jpeg|png|svg)' -print0)
	echo '</wallpapers>'
} > '/usr/share/gnome-background-properties/wallpapers.xml'