#! /bin/sh

# Convert svg file to png with a target width and height
# width and height are derived from the directory name
# of the target. Width and height must be equal

# Arg1: Source svg file
# Arg2: Filename for copyright notice
# Arg3: Target png file

# Extract the icon width from the target path e.g.
# src/ui/gui/icons/48x48/actions/file-save.png
# should result in a width of 48
stripprefix=${3#src*icons\/}
width=${stripprefix%%x*}

comment=`cat $2`
case $width in
    [0-9][0-9] | [0-9][0-9][0-9]) widthoption="--width=$width --height=$width" ;;
    *) widthoption= ;;
esac
rsvg-convert $widthoption "$1" | ${PYTHON3:-python3} build-aux/png-add-comment Comment "$comment" > "$3"