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- #!/bin/bash
- # epscrop -- crop EPS files using ghostscript
- # Copyright (C) 2002, Maarten Ditzel
- #
- # This program is free software; you can redistribute it and/or
- # modify it under the terms of the GNU General Public License
- # as published by the Free Software Foundation; either version 2
- # of the License, or (at your option) any later version.
- #
- # This program is distributed in the hope that it will be useful,
- # but WITHOUT ANY WARRANTY; without even the implied warranty of
- # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- # GNU General Public License for more details.
- #
- # You should have received a copy of the GNU General Public License
- # along with this program; if not, write to the Free Software
- # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
- # process arguments
- infile=$1
- if [ "$1" == "-h" ]; then
- echo "synopsis: epscrop <file>"
- echo "author: Maarten Ditzel (February 2002)"
- echo "description: adjusts the bounding box of <file> to fit"
- exit 1
- fi
- if (( $# < 1 )); then
- echo "no input file specified"
- exit 2
- fi
- # create a temporary directory
- tmpdir=/tmp/epscrop-$$
- mkdir $tmpdir
- # check ghostscript version (both GNU and Aladdin should work)
- gstype=`gs -v | awk '/^GNU|AFPL/ { print $1; }'`
- version=`gs -v | awk '/^GNU|AFPL/ { print $3; }'`
- major=`echo $version | awk -F "." '{ print $1; }'`
- minor=`echo $version | awk -F "." '{ print $2; }'`
- if [[ (( $major > 5 )) && (( $minor > 50 )) ]]; then
- # retrieve the bounding box
- gs -dNOPAUSE -sDEVICE=bbox -q $infile quit.ps 2> $tmpdir/bbox
- else
- # bbox device doesn't seem to work for previous versions
- # thus we use epswrite to find the bounding box
- # Q: why don't we use epswrite all the time ?
- # A: it returns a poor quality eps
- # Q: why don't we use the psbb program ?
- # A: only returns the boundingbox already specified in the file
- # and the whole point is to replace it with a cropped version
- gs -dNOPAUSE -sDEVICE=epswrite -sOutputFile=$tmpdir/bbox.eps -q $infile quit.ps
- grep BoundingBox $tmpdir/bbox.eps > $tmpdir/bbox
-
- fi
- # get the cropped bounding box
- bbox=`awk '/^%%BoundingBox:/ { print $2,$3,$4,$5; }' $tmpdir/bbox`
- # create awk script
- cat <<EOF > $tmpdir/epscrop.awk
- # created by epscrop
- BEGIN {
- bbdone = 0;
- }
- /^%%BoundingBox/ {
- if (!bbdone) {
- print \$1, bbox;
- bbdone = 1;
- }
- else
- print;
- }
- !/^%%BoundingBox/ {
- print;
- }
- EOF
- # adjust bounding box
- awk -v bbox="$bbox" -f $tmpdir/epscrop.awk $infile
- # remove the temporary directory
- rm -r $tmpdir
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