creates a background slideshow xml file

background_slideshow.sh

#!/bin/bash

# creates a background slideshow xml file
# usage:
#
# background_slideshow.sh >> myfilename.xml

function header() {
  echo -e "\t<starttime>"
  echo -e "\t\t<year>2009</year>"
  echo -e "\t\t<month>08</month>"
  echo -e "\t\t<day>04</day>"
  echo -e "\t\t<hour>00</hour>"
  echo -e "\t\t<minute>00</minute>"
  echo -e "\t\t<second>00</second>"
  echo -e "\t</starttime>"
}

function static() {
  echo -e "\t<static>"
  echo -e "\t\t<duration>1795.0</duration>"
  echo -e "\t\t<file>$(pwd)/$1</file>"
  echo -e "\t</static>"
}

function transition() {
  echo -e "\t<transition>"
  echo -e "\t\t<duration>5.0</duration>"
  echo -e "\t\t<from>$(pwd)/$1</from>"
  echo -e "\t\t<to>$(pwd)/$2</to>"
  echo -e "\t</transition>"
}

echo -e "<background>"

header

arr=(*)
for ((i=0; i<${#arr[@]}-1; i++));
do
  static ${arr[$i]}
  transition ${arr[$i]} ${arr[$i+1]}
done

LAST=${arr[${#arr[@]}-1]}
static $LAST
transition $LAST ${arr[0]}

echo "</background>"