#!/bin/sh
#
if [ $# -eq 0 ]; then
    echo "usage: ilbmtopng file [png_textfile]" >&2
    exit 1
fi
pngtext=~/graphics/images/pngtext/ilbm.txt
if [ $# -gt 1 ]; then pngtext=$2; fi
aspect=$(getaspect_ilbm -i "$1")
f=$1
case "$1" in
*.[Ii][Ff][Ff])
    f="${1%.[Ii][Ff][Ff]}";;
*.[Ii][Ll][Bb][Mm])
    f="${1%.[Ii][Ll][Bb][Mm]}";;
*.[Hh][Aa][Mm])
    f="${1%.[Hh][Aa][Mm]}";;
esac
ilbmtoppm -adjustcolors "$1" | \
    pnmtopng -gamma 0.4545 -phys $aspect 0 -ztxt $pngtext > "$f.png"
.