background-slideshow-generate

background-slideshow-generate

#!/bin/sh
set -e

duration=1800

dir="$(dirname "$0")"
dir="$(readlink -f "$dir")"

output="$dir/background.xml"
output_temp="$output.new$$"
trap 'rm -f "$output_temp"' 0 1 2 13 15

(
cat <<E
<background>
  <starttime>
    <year>2010</year><month>01</month><day>01</day>
    <hour>00</hour><minute>00</minute><second>00</second>
  </starttime>
E

find -L "$dir" -type f | \
shuf | \
file --mime-type -LNf - | \
sed -nr -e 's|(.*): image/[^ ]+$|\1|p' | \
while read f; do
  printf '  <static><duration>%s</duration><file>%s</file></static>\n' \
         "$duration" "$f"
done

cat <<E
</background>
E
) >"$output_temp"

mv -f "$output_temp" "$output"

# vim:set et sw=2 sts=2: