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#!/bin/sh
#
# ppmmargin - add a margin to a PNM image
#
# Copyright (C) 1991 by Jef Poskanzer.
#
# Permission to use, copy, modify, and distribute this software and its
# documentation for any purpose and without fee is hereby granted, provided
# that the above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear in supporting
# documentation. This software is provided "as is" without express or
# implied warranty.
tmpdir=$(mktemp -d -t ppmmargin.XXXXXXX) || exit 1
tmp1="$tmpdir/tmp1"
tmp2="$tmpdir/tmp2"
tmp3="$tmpdir/tmp3"
tmp4="$tmpdir/tmp4"
color="-gofigure"
# Parse args.
while true ; do
case "$1" in
-w* )
color="-white"
shift
;;
-b* )
color="-black"
shift
;;
-c* )
shift
if [ ! ${1-""} ] ; then
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
if [ -d "$tmpdir" ]; then
rm -rf "$tmpdir"
fi
exit 1
fi
color="$1"
shift
;;
-* )
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
if [ -d "$tmpdir" ]; then
rm -rf "$tmpdir"
fi
exit 1
;;
* )
break
;;
esac
done
if [ ! ${1-""} ] ; then
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
if [ -d "$tmpdir" ]; then
rm -rf "$tmpdir"
fi
exit 1
fi
size="$1"
shift
if [ ${2-""} ] ; then
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
if [ -d "$tmpdir" ]; then
rm -rf "$tmpdir"
fi
exit 1
fi
# Capture input file in a tmp file, in case it's a pipe.
cat $@ > $tmp1
# Construct spacer files.
case "$color" in
-gofigure )
pnmcut 0 0 1 1 $tmp1 | pnmtile $size 1 > $tmp2
;;
-white | -black )
pbmmake $color $size 1 > $tmp2
;;
* )
ppmmake $color $size 1 > $tmp2
;;
esac
pamflip -rotate90 $tmp2 > $tmp3
# Cat things together.
pnmcat -lr $tmp2 $tmp1 $tmp2 > $tmp4
pnmcat -tb $tmp3 $tmp4 $tmp3
if [ -d "$tmpdir" ]; then
rm -rf "$tmpdir"
fi
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