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quakeforge/tools/qflight/source/options.c

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/*
options.c
command line options handling
Copyright (C) 2002 Colin Thompson
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:
Free Software Foundation, Inc.
59 Temple Place - Suite 330
Boston, MA 02111-1307, USA
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
static __attribute__ ((used)) const char rcsid[] =
"$Id$";
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#ifdef HAVE_STRING_H
# include <string.h>
#endif
#ifdef HAVE_STRINGS_H
# include <strings.h>
#endif
#include <getopt.h>
#include <errno.h>
#include <stdlib.h>
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#include "QF/dstring.h"
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#include "QF/qtypes.h"
#include "compat.h"
#include "entities.h"
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#include "options.h"
#include "properties.h"
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const char *this_program;
static struct option const long_options[] = {
{"quiet", no_argument, 0, 'q'},
{"verbose", no_argument, 0, 'v'},
{"help", no_argument, 0, 'h'},
{"version", no_argument, 0, 'V'},
{"threads", required_argument, 0, 't'},
{"properties", required_argument, 0, 'P'},
{"attenuation", required_argument, 0, 'a'},
{"noise", required_argument, 0, 'n'},
{"cutoff", required_argument, 0, 'c'},
{"extra", required_argument, 0, 'e'},
{"novis", no_argument, 0, 'N'},
{"distance", required_argument, 0, 'd'},
{"range", required_argument, 0, 'r'},
{"file", required_argument, 0, 'f'},
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{NULL, 0, NULL, 0}
};
static const char *short_options =
"q" // quiet
"v" // verbose
"h" // help
"V" // version
"N" // novis
"t:" // threads
"a:" // attenuation
"n:" // noise
"c:" // cutoff
"e:" // extra sampling
"d:" // scale distance
"r:" // scale range
"P:" // properties file
"f:"
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;
void
usage (int status)
{
printf ("%s - QuakeForge light tool\n", this_program);
printf ("Usage: %s [options] bspfile\n", this_program);
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printf (
"Options:\n"
" -q, --quiet Inhibit usual output\n"
" -v, --verbose Display more output than usual\n"
" -h, --help Display this help and exit\n"
" -V, --version Output version information and exit\n"
" -N, --novis Don't use vis data\n"
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" -t, --threads [num] Number of threads to use\n"
" -e, --extra [num] Apply extra sampling\n"
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" -d, --distance [scale] Scale distance\n"
" -r, --range [scale] Scale range\n"
" -a, --attenuation [type] linear,radius,inverse,realistic,none,\n"
" havoc\n"
" -n, --noise [factor] Scale noise. 0 (default) to disable\n"
" -c, --cutoff [scale] Scale cutoff. 0 to disable\n"
" -P, --properties [file] Properties file\n"
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" -f, --file [bspfile] BSP file\n\n");
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exit (status);
}
int
DecodeArgs (int argc, char **argv)
{
int c;
char *eptr;
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memset (&options, 0, sizeof (options));
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options.verbosity = 0;
options.threads = 1;
options.distance = 1.0;
options.range = 0.5;
options.globallightscale = 1.0;
options.cutoff = 1.0;
options.attenuation = LIGHT_LINEAR;
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bspfile = NULL;
while ((c = getopt_long (argc, argv, short_options, long_options, 0))
!= EOF) {
switch (c) {
case 'q': // quiet
options.verbosity -= 1;
break;
case 'v': // verbose
options.verbosity += 1;
break;
case 'h': // help
usage (0);
break;
case 'N': // novis
options.novis = 1;
break;
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case 'V': // version
printf ("%s version %s\n", PACKAGE_NAME, PACKAGE_VERSION);
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exit (0);
break;
case 't': // threads
options.threads = strtol (optarg, &eptr, 10);
if (eptr == optarg || *eptr)
usage (1);
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break;
case 'a':
if ((options.attenuation = parse_attenuation (optarg)) == -1)
usage (1);
break;
case 'n': // noise
options.noise = strtod (optarg, &eptr);
if (eptr == optarg || *eptr)
usage (1);
options.noise = bound (0, options.extrabit, 2);
break;
case 'c': // cutoff
options.cutoff = strtod (optarg, &eptr);
if (eptr == optarg || *eptr)
usage (1);
options.cutoff = bound (0, options.extrabit, 2);
break;
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case 'e': // extra
options.extrabit = strtol (optarg, &eptr, 10);
if (eptr == optarg || *eptr)
usage (1);
options.extrabit = bound (0, options.extrabit, 2);
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break;
case 'd': // scale distance
options.distance = strtod (optarg, &eptr);
if (eptr == optarg || *eptr)
usage (1);
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break;
case 'r': // scale range
options.range = strtod (optarg, &eptr);
if (eptr == optarg || *eptr)
usage (1);
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break;
case 'f':
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bspfile = dstring_strdup (optarg);
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break;
case 'P':
options.properties_filename = strdup (optarg);
break;
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default:
usage (1);
}
}
options.extrascale = 1.0 / (1 << (options.extrabit * 2));
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if ((!bspfile) && argv[optind] && *(argv[optind]))
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bspfile = dstring_strdup (argv[optind++]);
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return optind;
}