src/tiff/port/getopt.c

/* $Id$ */

/*
 * 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
	1	/* $Id$ */
	2
	3	/*
	4	* Copyright (c) 1987, 1993, 1994
	5	* The Regents of the University of California. All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions and the following disclaimer.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
	15	* 3. Neither the name of the University nor the names of its contributors
	16	* may be used to endorse or promote products derived from this software
	17	* without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*/
	31
	32	#if 0
	33	static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
	34	__RCSID("$NetBSD: getopt.c,v 1.26 2003/08/07 16:43:40 agc Exp $");
	35	#endif
	36
	37	#include <stdio.h>
	38	#include <string.h>
	39	#include "libport.h"
	40
	41	int opterr = 1, /* if error message should be printed */
	42	optind = 1, /* index into parent argv vector */
	43	optopt, /* character checked for validity */
	44	optreset; /* reset getopt */
	45	char optarg; / argument associated with option */
	46
	47	#define BADCH (int)'?'
	48	#define BADARG (int)':'
	49	#define EMSG ""
	50
	51	/*
	52	* getopt --
	53	* Parse argc/argv argument vector.
	54	*/
	55	int
	56	getopt(int argc, char * const argv[], const char *optstring)
	57	{
	58	static char place = EMSG; / option letter processing */
	59	char oli; / option letter list index */
	60
	61	if (optreset \|\| place == 0) { / update scanning pointer */
	62	optreset = 0;
	63	place = argv[optind];
	64	if (optind >= argc \|\| *place++ != '-') {
	65	/* Argument is absent or is not an option */
	66	place = EMSG;
	67	return (-1);
	68	}
	69	optopt = *place++;
	70	if (optopt == '-' && *place == 0) {
	71	/* "--" => end of options */
	72	++optind;
	73	place = EMSG;
	74	return (-1);
	75	}
	76	if (optopt == 0) {
	77	/* Solitary '-', treat as a '-' option
	78	if the program (eg su) is looking for it. */
	79	place = EMSG;
	80	if (strchr(optstring, '-') == NULL)
	81	return -1;
	82	optopt = '-';
	83	}
	84	} else
	85	optopt = *place++;
	86
	87	/* See if option letter is one the caller wanted... */
	88	if (optopt == ':' \|\| (oli = strchr(optstring, optopt)) == NULL) {
	89	if (*place == 0)
	90	++optind;
	91	if (opterr && *optstring != ':')
	92	(void)fprintf(stderr,
	93	"unknown option -- %c\n", optopt);
	94	return (BADCH);
	95	}
	96
	97	/* Does this option need an argument? */
	98	if (oli[1] != ':') {
	99	/* don't need argument */
	100	optarg = NULL;
	101	if (*place == 0)
	102	++optind;
	103	} else {
	104	/* Option-argument is either the rest of this argument or the
	105	entire next argument. */
	106	if (*place)
	107	optarg = place;
	108	else if (argc > ++optind)
	109	optarg = argv[optind];
	110	else {
	111	/* option-argument absent */
	112	place = EMSG;
	113	if (*optstring == ':')
	114	return (BADARG);
	115	if (opterr)
	116	(void)fprintf(stderr,
	117	"option requires an argument -- %c\n",
	118	optopt);
	119	return (BADCH);
	120	}
	121	place = EMSG;
	122	++optind;
	123	}
	124	return (optopt); /* return option letter */
	125	}