#!/bin/sh

#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
# Copyright (c) 2010, 2021, Oracle and/or its affiliates.
#

# Unfortunately, the gnuplot demo wants run in the
# /usr/demo/gnuplot directory.  While there it wants to read and
# create files.  But ordinary users can't create files there.  So
# we will create a temporary directory, put in symlinks to the
# gnuplot data files, and run the gnuplot command from there.
# This will allow us to run the gnuplot demo from any directory.
#
# If the environment variable $GNUPLOT_DEMO_SAVE_FILES is set to y,
# then we will save any new files that get created back to the
# current directory.  This can also be accomplished by
# "rundemo -save-files".
#
# There are two font files that are not included.  Set
# corresponding environment variables for sfrm1000.pfb and
# cmmi10.pfb if running the demo fontfile_latex.dem.
#
# With no arguments we will run the default demo.
# With arguments we will run gnuplot with those arguments.
# One easy way to run the gnuplot demo is "rundemo < /dev/null"

GNUPLOT_DEMO_DIR="${GNUPLOT_DEMO_DIR:-/usr/demo/gnuplot}"
GNUPLOT_DEMO_PROGRAM="${GNUPLOT_DEMO_PROGRAM:-gnuplot}"
GNUPLOT_DEMO_DEFAULT="${GNUPLOT_DEMO_DEFAULT:-all.dem}"
GNUPLOT_DEMO_GSFONTS="${GNUPLOT_DEMO_GSFONTS:-/usr/share/ghostscript/fonts}"
GNUPLOT_DEMO_P052003L_PFB="${GNUPLOT_DEMO_P052003L_PFB:-$GNUPLOT_DEMO_GSFONTS/p052003l.pfb}"
GNUPLOT_DEMO_P052023L_PFB="${GNUPLOT_DEMO_P052023L_PFB:-$GNUPLOT_DEMO_GSFONTS/p052023l.pfb}"
GNUPLOT_DEMO_SAVE_FILES=${GNUPLOT_DEMO_SAVE_FILES:-n}

if [ "x$1" = "x-save-files" ]
then
	GNUPLOT_DEMO_SAVE_FILES="y"
	shift

elif [ "x$1" = "x-delete-files" ]
then
	GNUPLOT_DEMO_SAVE_FILES="n"
	shift
fi

# if we are interrupted or terminated, remove the temporary
# directory we will create.

if [ "$GNUPLOT_DEMO_SAVE_FILES" = "y" ]
then
	trap 'find $GNUPLOT_DEMO_TMPDIR -type f -a -exec cp -p {} . \; ;
		rm -rf $GNUPLOT_DEMO_TMPDIR; exit 1' INT TERM
else
	trap 'rm -rf $GNUPLOT_DEMO_TMPDIR; exit 1' INT TERM
fi

# Create a writeable temporary directory to run the demo from.
GNUPLOT_DEMO_TMPDIR=$(mktemp -d -t gnuplot_demo_$(logname)_XXXXXX)
if [ -z "$GNUPLOT_DEMO_TMPDIR" ]; then
	print "Couldn't create temporary directory!" 1>&2
	exit 1
fi

# Copy demo files to tmp directory.
cp -R "${GNUPLOT_DEMO_DIR}/"* "${GNUPLOT_DEMO_TMPDIR}"

# Run the gnuplot demo in that directory.

if [ "$#" -eq 0 ]
then
	(cd $GNUPLOT_DEMO_TMPDIR;
	    exec $GNUPLOT_DEMO_PROGRAM $GNUPLOT_DEMO_DEFAULT)
else
	(cd $GNUPLOT_DEMO_TMPDIR;
	    exec $GNUPLOT_DEMO_PROGRAM $*)
fi

# Save the gnuplot exit status

GNUPLOT_DEMO_EXITSTATUS="$?"

# If desired save any new files that got created in the temporary
# directory

if [ "$GNUPLOT_DEMO_SAVE_FILES" = "y" ]
then
	find $GNUPLOT_DEMO_TMPDIR -type f -exec cp -p {} . \;
fi

# Remove the temporary directory

rm -rf $GNUPLOT_DEMO_TMPDIR

# exit with the exit status from the gnuplot command

exit $GNUPLOT_DEMO_EXITSTATUS