/*
* Copyright (c) 1999-2000, Image Power, Inc. and the University of
* British Columbia.
* Copyright (c) 2001-2002 Michael David Adams.
* All rights reserved.
*/
/* __START_OF_JASPER_LICENSE__
*
* JasPer License Version 2.0
*
* Copyright (c) 2001-2006 Michael David Adams
* Copyright (c) 1999-2000 Image Power, Inc.
* Copyright (c) 1999-2000 The University of British Columbia
*
* All rights reserved.
*
* Permission is hereby granted, free of charge, to any person (the
* "User") obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without restriction,
* including without limitation the rights to use, copy, modify, merge,
* publish, distribute, and/or sell copies of the Software, and to permit
* persons to whom the Software is furnished to do so, subject to the
* following conditions:
*
* 1. The above copyright notices and this permission notice (which
* includes the disclaimer below) shall be included in all copies or
* substantial portions of the Software.
*
* 2. The name of a copyright holder shall not be used to endorse or
* promote products derived from the Software without specific prior
* written permission.
*
* THIS DISCLAIMER OF WARRANTY CONSTITUTES AN ESSENTIAL PART OF THIS
* LICENSE. NO USE OF THE SOFTWARE IS AUTHORIZED HEREUNDER EXCEPT UNDER
* THIS DISCLAIMER. THE SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS
* "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
* BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A
* PARTICULAR PURPOSE AND NONINFRINGEMENT OF THIRD PARTY RIGHTS. IN NO
* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, OR ANY SPECIAL
* INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER RESULTING
* FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
* NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
* WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. NO ASSURANCES ARE
* PROVIDED BY THE COPYRIGHT HOLDERS THAT THE SOFTWARE DOES NOT INFRINGE
* THE PATENT OR OTHER INTELLECTUAL PROPERTY RIGHTS OF ANY OTHER ENTITY.
* EACH COPYRIGHT HOLDER DISCLAIMS ANY LIABILITY TO THE USER FOR CLAIMS
* BROUGHT BY ANY OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL
* PROPERTY RIGHTS OR OTHERWISE. AS A CONDITION TO EXERCISING THE RIGHTS
* GRANTED HEREUNDER, EACH USER HEREBY ASSUMES SOLE RESPONSIBILITY TO SECURE
* ANY OTHER INTELLECTUAL PROPERTY RIGHTS NEEDED, IF ANY. THE SOFTWARE
* IS NOT FAULT-TOLERANT AND IS NOT INTENDED FOR USE IN MISSION-CRITICAL
* SYSTEMS, SUCH AS THOSE USED IN THE OPERATION OF NUCLEAR FACILITIES,
* AIRCRAFT NAVIGATION OR COMMUNICATION SYSTEMS, AIR TRAFFIC CONTROL
* SYSTEMS, DIRECT LIFE SUPPORT MACHINES, OR WEAPONS SYSTEMS, IN WHICH
* THE FAILURE OF THE SOFTWARE OR SYSTEM COULD LEAD DIRECTLY TO DEATH,
* PERSONAL INJURY, OR SEVERE PHYSICAL OR ENVIRONMENTAL DAMAGE ("HIGH
* RISK ACTIVITIES"). THE COPYRIGHT HOLDERS SPECIFICALLY DISCLAIM ANY
* EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR HIGH RISK ACTIVITIES.
*
* __END_OF_JASPER_LICENSE__
*/
/*
* Command Line Option Parsing Library
*
* $Id: jas_getopt.c,v 1.2 2008-05-26 09:40:52 vp153 Exp $
*/
/******************************************************************************\
* Includes.
\******************************************************************************/
#include <stdio.h>
#include <string.h>
#include "jasper/jas_getopt.h"
#include "jasper/jas_math.h"
/******************************************************************************\
* Global data.
\******************************************************************************/
int jas_optind = 0;
int jas_opterr = 1;
char *jas_optarg = 0;
/******************************************************************************\
* Code.
\******************************************************************************/
static jas_opt_t *jas_optlookup(jas_opt_t *opts, char *name)
{
jas_opt_t *opt;
for (opt = opts; opt->id >= 0 && opt->name; ++opt) {
if (!strcmp(opt->name, name)) {
return opt;
}
}
return 0;
}
int jas_getopt(int argc, char **argv, jas_opt_t *opts)
{
char *cp;
int id;
int hasarg;
jas_opt_t *opt;
char *s;
if (!jas_optind) {
jas_optind = JAS_MIN(1, argc);
}
while (jas_optind < argc) {
s = cp = argv[jas_optind];
if (*cp == '-') {
/* We are processing an option. */
++jas_optind;
if (*++cp == '-') {
/* We are processing a long option. */
++cp;
if (*cp == '\0') {
/* This is the end of the options. */
return JAS_GETOPT_EOF;
}
if (!(opt = jas_optlookup(opts, cp))) {
if (jas_opterr) {
jas_eprintf("unknown long option %s\n", s);
}
return JAS_GETOPT_ERR;
}
hasarg = (opt->flags & JAS_OPT_HASARG) != 0;
id = opt->id;
} else {
/* We are processing a short option. */
if (strlen(cp) != 1 ||
!(opt = jas_optlookup(opts, cp))) {
if (jas_opterr) {
jas_eprintf("unknown short option %s\n", s);
}
return JAS_GETOPT_ERR;
}
hasarg = (opt->flags & JAS_OPT_HASARG) != 0;
id = opt->id;
}
if (hasarg) {
/* The option has an argument. */
if (jas_optind >= argc) {
if (jas_opterr) {
jas_eprintf("missing argument for option %s\n", s);
}
return JAS_GETOPT_ERR;
}
jas_optarg = argv[jas_optind];
++jas_optind;
} else {
/* The option does not have an argument. */
jas_optarg = 0;
}
return id;
} else {
/* We are not processing an option. */
return JAS_GETOPT_EOF;
}
}
return JAS_GETOPT_EOF;
}