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eda-tools/schhist/schps2ppm
2010-09-07 17:03:19 -03:00

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#!/bin/sh
#
# schps2ppm - Generate PPM files from normalized Eeschema Postscript
#
# Written 2010 by Werner Almesberger
# Copyright 2010 Werner Almesberger
#
# 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.
#
RES=1280x850
usage()
{
cat <<EOF 1>&2
usage: $0 [options] [file.ps [file.ppm]]
-n disable alpha blending
-r XxY image resolution (default: $RES)
EOF
exit 1
}
alpha=true
while true; do
case "$1" in
-n) alpha=false
shift;;
-r) [ -z "$2" ] && usage
RES="$2"
shift 2;;
-) break;;
-*) usage;;
*) break;;
esac
done
[ ! -z "$3" ] && usage
in=${1:--}
out=${2:-/dev/stdout}
X=`echo $RES | sed 's/x.*//'`
Y=`echo $RES | sed 's/.*x//'`
IRES=${Y}x$X
res=`expr 72 \* $X / 800`
cat "$in" |
gs -sDEVICE=ppmraw -sOutputFile=- -g$IRES -r$res \
`$alpha && echo '' -dTextAlphaBits=4 -dGraphicsAlphaBits=4` \
-q - |
pnmflip -r270 >"$out"