[wxWidgets.git] / src / tiff / port / getopt.c


/*
 * Copyright (c) 1987, 1993, 1994
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#if 0
static char sccsid[] = "@(#)getopt.c	8.3 (Berkeley) 4/27/95";
__RCSID("$NetBSD: getopt.c,v 1.26 2003/08/07 16:43:40 agc Exp $");
#endif

#include <stdio.h>
#include <string.h>
#include "libport.h"

int	opterr = 1,		/* if error message should be printed */
	optind = 1,		/* index into parent argv vector */
	optopt,			/* character checked for validity */
	optreset;		/* reset getopt */
char	*optarg;		/* argument associated with option */

#define	BADCH	(int)'?'
#define	BADARG	(int)':'
#define	EMSG	""

/*
 * getopt --
 *	Parse argc/argv argument vector.
 */
int
getopt(int argc, char * const argv[], const char *optstring)
{
	static char *place = EMSG;		/* option letter processing */
	char *oli;				/* option letter list index */

	if (optreset || *place == 0) {		/* update scanning pointer */
		optreset = 0;
		place = argv[optind];
		if (optind >= argc || *place++ != '-') {
			/* Argument is absent or is not an option */
			place = EMSG;
			return (-1);
		}
		optopt = *place++;
		if (optopt == '-' && *place == 0) {
			/* "--" => end of options */
			++optind;
			place = EMSG;
			return (-1);
		}
		if (optopt == 0) {
			/* Solitary '-', treat as a '-' option
			   if the program (eg su) is looking for it. */
			place = EMSG;
			if (strchr(optstring, '-') == NULL)
				return -1;
			optopt = '-';
		}
	} else
		optopt = *place++;

	/* See if option letter is one the caller wanted... */
	if (optopt == ':' || (oli = strchr(optstring, optopt)) == NULL) {
		if (*place == 0)
			++optind;
		if (opterr && *optstring != ':')
			(void)fprintf(stderr,
                                      "unknown option -- %c\n", optopt);
		return (BADCH);
	}

	/* Does this option need an argument? */
	if (oli[1] != ':') {
		/* don't need argument */
		optarg = NULL;
		if (*place == 0)
			++optind;
	} else {
		/* Option-argument is either the rest of this argument or the
		   entire next argument. */
		if (*place)
			optarg = place;
		else if (argc > ++optind)
			optarg = argv[optind];
		else {
			/* option-argument absent */
			place = EMSG;
			if (*optstring == ':')
				return (BADARG);
			if (opterr)
				(void)fprintf(stderr,
                                        "option requires an argument -- %c\n",
                                        optopt);
			return (BADCH);
		}
		place = EMSG;
		++optind;
	}
	return (optopt);			/* return option letter */
}
Commit	Line	Data
8414a40c VZ	1
	2	/*
	3	* Copyright (c) 1987, 1993, 1994
	4	* The Regents of the University of California. All rights reserved.
	5	*
	6	* Redistribution and use in source and binary forms, with or without
	7	* modification, are permitted provided that the following conditions
	8	* are met:
	9	* 1. Redistributions of source code must retain the above copyright
	10	* notice, this list of conditions and the following disclaimer.
	11	* 2. Redistributions in binary form must reproduce the above copyright
	12	* notice, this list of conditions and the following disclaimer in the
	13	* documentation and/or other materials provided with the distribution.
	14	* 3. Neither the name of the University nor the names of its contributors
	15	* may be used to endorse or promote products derived from this software
	16	* without specific prior written permission.
	17	*
	18	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	19	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	20	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	21	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	22	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	23	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	24	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	25	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	26	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	27	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	28	* SUCH DAMAGE.
	29	*/
	30
	31	#if 0
	32	static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
	33	__RCSID("$NetBSD: getopt.c,v 1.26 2003/08/07 16:43:40 agc Exp $");
	34	#endif
	35
	36	#include <stdio.h>
	37	#include <string.h>
80ed523f	38	#include "libport.h"
8414a40c VZ	39
	40	int opterr = 1, /* if error message should be printed */
	41	optind = 1, /* index into parent argv vector */
	42	optopt, /* character checked for validity */
	43	optreset; /* reset getopt */
	44	char optarg; / argument associated with option */
	45
	46	#define BADCH (int)'?'
	47	#define BADARG (int)':'
	48	#define EMSG ""
	49
	50	/*
	51	* getopt --
	52	* Parse argc/argv argument vector.
	53	*/
	54	int
	55	getopt(int argc, char * const argv[], const char *optstring)
	56	{
	57	static char place = EMSG; / option letter processing */
	58	char oli; / option letter list index */
	59
	60	if (optreset \|\| place == 0) { / update scanning pointer */
	61	optreset = 0;
	62	place = argv[optind];
	63	if (optind >= argc \|\| *place++ != '-') {
	64	/* Argument is absent or is not an option */
	65	place = EMSG;
	66	return (-1);
	67	}
	68	optopt = *place++;
	69	if (optopt == '-' && *place == 0) {
	70	/* "--" => end of options */
	71	++optind;
	72	place = EMSG;
	73	return (-1);
	74	}
	75	if (optopt == 0) {
	76	/* Solitary '-', treat as a '-' option
	77	if the program (eg su) is looking for it. */
	78	place = EMSG;
	79	if (strchr(optstring, '-') == NULL)
	80	return -1;
	81	optopt = '-';
	82	}
	83	} else
	84	optopt = *place++;
	85
	86	/* See if option letter is one the caller wanted... */
	87	if (optopt == ':' \|\| (oli = strchr(optstring, optopt)) == NULL) {
	88	if (*place == 0)
	89	++optind;
	90	if (opterr && *optstring != ':')
	91	(void)fprintf(stderr,
	92	"unknown option -- %c\n", optopt);
	93	return (BADCH);
	94	}
	95
	96	/* Does this option need an argument? */
	97	if (oli[1] != ':') {
	98	/* don't need argument */
	99	optarg = NULL;
	100	if (*place == 0)
	101	++optind;
	102	} else {
103	/* Option-argument is either the rest of this argument or the
104	entire next argument. */
105	if (*place)
106	optarg = place;
107	else if (argc > ++optind)
108	optarg = argv[optind];
109	else {
110	/* option-argument absent */
111	place = EMSG;
112	if (*optstring == ':')
113	return (BADARG);
114	if (opterr)
115	(void)fprintf(stderr,
116	"option requires an argument -- %c\n",
117	optopt);
118	return (BADCH);
119	}
120	place = EMSG;
121	++optind;
122	}
123	return (optopt); /* return option letter */
124	}