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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.
tempdir="${TMPDIR-/tmp}/pnmmargin.$$"
mkdir -m 0700 $tempdir || \
{ echo "Could not create temporary file. Exiting." 1>&2; exit 1;}
trap 'rm -rf $tempdir' 0 1 3 15
tmp1=$tempdir/pnmm1
tmp2=$tempdir/pnmm2
tmp3=$tempdir/pnmm3
tmp4=$tempdir/pnmm4
color="-gofigure"
plainopt=""
# Parse args.
while true ; do
case "$1" in
-p|-pl|-pla|-plai|-plain )
plainopt="-plain"
shift
;;
-w|-wh|-whi|-whit|-white )
color="-white"
shift
;;
-b|-bl|-bla|-blac|-black )
color="-black"
shift
;;
-c|-co|-col|-colo|-color )
shift
if [ ! ${1-""} ] ; then
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
exit 1
fi
color="$1"
shift
;;
-* )
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
exit 1
;;
* )
break
;;
esac
done
if [ ! ${1-""} ] ; then
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
exit 1
fi
size="$1"
shift
if [ ${2-""} ] ; then
echo "usage: $0 [-white|-black|-color <colorspec>] <size> [pnmfile]" 1>&2
exit 1
fi
# Capture input file in a tmp file, in case it's a pipe.
# TODO: This code does not consider the case when the input file is specified
# and there is also input coming in from a pipe.
cat $@ > $tmp1
if [ $size -eq 0 ] ; then
# Zero margin; just copy input to output
pamtopnm $plainopt $tmp1;
else
# If -white or -black, write output with pnmpad and exit.
# Otherwise construct spacer files.
case "$color" in
-gofigure )
pnmcut 0 0 1 1 $tmp1 | pnmtile $size 1 > $tmp2
;;
-white | -black )
pnmpad $plainopt $color \
-left=$size -right=$size -top=$size -bottom=$size $tmp1
exit
;;
* )
ppmmake $color $size 1 > $tmp2
;;
esac
pamflip -rotate90 $tmp2 > $tmp3
# Cat things together.
pnmcat -lr $tmp2 $tmp1 $tmp2 > $tmp4
pnmcat -tb $plainopt $tmp3 $tmp4 $tmp3
fi
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