86 lines
2.4 KiB
Bash
86 lines
2.4 KiB
Bash
#! /bin/sh
|
|
#
|
|
# grap2graph -- compile graph description descriptions to bitmap images
|
|
#
|
|
# by Eric S. Raymond <esr@thyrsus.com>, May 2003
|
|
#
|
|
# In Unixland, the magic is in knowing what to string together...
|
|
#
|
|
# Take grap description on stdin, emit cropped bitmap on stdout.
|
|
# The pic markup should *not* be wrapped in .G1/.G2, this script will do that.
|
|
# A -U option on the command line enables gpic/groff "unsafe" mode.
|
|
# A -format FOO option changes the image output format to any format
|
|
# supported by convert(1). All other options are passed to convert(1).
|
|
# The default format is PNG.
|
|
#
|
|
|
|
# Requires the groff suite and the ImageMagick tools. Both are open source.
|
|
# This code is released to the public domain.
|
|
#
|
|
# Here are the assumptions behind the option processing:
|
|
#
|
|
# 1. None of the options of grap(1) are relevant.
|
|
#
|
|
# 2. Only the -U option of groff(1) is relevant.
|
|
#
|
|
# 3. Many options of convert(1) are potentially relevant, (especially
|
|
# -density, -interlace, -transparency, -border, and -comment).
|
|
#
|
|
# Thus, we pass -U to groff(1), and everything else to convert(1).
|
|
#
|
|
# Id: grap2graph.sh,v 1.4 2005/05/18 07:03:06 wl Exp
|
|
#
|
|
groff_opts=""
|
|
convert_opts=""
|
|
format="png"
|
|
|
|
while [ "$1" ]
|
|
do
|
|
case $1 in
|
|
-unsafe)
|
|
groff_opts="-U";;
|
|
-format)
|
|
format=$2
|
|
shift;;
|
|
-v | --version)
|
|
echo "GNU grap2graph (groff) version @VERSION@"
|
|
exit 0;;
|
|
--help)
|
|
echo "usage: grap2graph [ option ...] < in > out"
|
|
exit 0;;
|
|
*)
|
|
convert_opts="$convert_opts $1";;
|
|
esac
|
|
shift
|
|
done
|
|
|
|
# create temporary directory
|
|
tmp=
|
|
for d in "$GROFF_TMPDIR" "$TMPDIR" "$TMP" "$TEMP" /tmp; do
|
|
test -z "$d" && continue
|
|
|
|
tmp=`(umask 077 && mktemp -d -q "$d/grap2graph-XXXXXX") 2> /dev/null` \
|
|
&& test -n "$tmp" && test -d "$tmp" \
|
|
&& break
|
|
|
|
tmp=$d/grap2graph$$-$RANDOM
|
|
(umask 077 && mkdir $tmp) 2> /dev/null && break
|
|
done;
|
|
if test -z "$tmp"; then
|
|
echo "$0: cannot create temporary directory" >&2
|
|
{ (exit 1); exit 1; }
|
|
fi
|
|
|
|
trap 'exit_status=$?; rm -rf $tmp && exit $exit_status' 0 2 15
|
|
|
|
# Here goes:
|
|
# 1. Add .G1/.G2.
|
|
# 2. Process through grap(1) to emit pic markup.
|
|
# 3. Process through groff(1) with pic preprocessing to emit Postscript.
|
|
# 4. Use convert(1) to crop the Postscript and turn it into a bitmap.
|
|
(echo ".G1"; cat; echo ".G2") | grap | groff -p $groff_opts -Tps -P-pletter | \
|
|
convert -trim -crop 0x0 $convert_opts - $tmp/grap2graph.$format \
|
|
&& cat $tmp/grap2graph.$format
|
|
|
|
# End
|