backgrounds-xml.sh

#!/bin/bash

#set variable

THEME=$(awk '/THEME/ {print $3; exit}' Makefile ) #set automatically name of theme from Makefile
DTHEME=$(awk '/DTHEME/ {print $3; exit}' Makefile )
ABSPATH=/usr/share/backgrounds/$DTHEME/

if [ -e $THEME.xml ]; then
    rm $THEME.xml
fi

# creating the head of backgrounds.xml
echo "<?xml version=\"1.0\" encoding=\"UTF-8\"?>
<!DOCTYPE wallpapers SYSTEM \"gnome-wp-list.dtd\">
<wallpapers>" > $THEME.xml

# looking for all pictures in DIRECTORY
echo "OK. Now we are creating $THEME.xml"

# This script is looking for .png and .jpg files only, but you can add here another file types. The "<options>stretched</options>" should work best for unknow sized files.
for i in *.jpg *.png; do 
echo "<wallpaper deleted="\"false\"">
<name>${i::(-4)}</name>
<filename>${ABSPATH}$i</filename>
  <options>stretched</options>
    <pcolor>#ffffff</pcolor>
    <scolor>#000000</scolor>
    <shade_type>solid</shade_type>
</wallpaper>" >> $THEME.xml
done

# creating the bottom of backgrounds.xml
echo "</wallpapers>" >> $THEME.xml

echo
echo "#################################"
echo "DONE xml file created"
echo "#################################"
echo
exit 0