[openssh.git] / openbsd-compat / 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.
 */

/* OPENBSD ORIGINAL: lib/libc/stdlib/getopt.c */

#include "includes.h"
#if !defined(HAVE_GETOPT) || !defined(HAVE_GETOPT_OPTRESET)

#if defined(LIBC_SCCS) && !defined(lint)
static char *rcsid = "$OpenBSD: getopt.c,v 1.5 2003/06/02 20:18:37 millert Exp $";
#endif /* LIBC_SCCS and not lint */

#include <stdio.h>
#include <stdlib.h>
#include <string.h>

int	BSDopterr = 1,		/* if error message should be printed */
	BSDoptind = 1,		/* index into parent argv vector */
	BSDoptopt,		/* character checked for validity */
	BSDoptreset;		/* reset getopt */
char	*BSDoptarg;		/* argument associated with option */

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

/*
 * getopt --
 *	Parse argc/argv argument vector.
 */
int
BSDgetopt(nargc, nargv, ostr)
	int nargc;
	char * const *nargv;
	const char *ostr;
{
	extern char *__progname;
	static char *place = EMSG;		/* option letter processing */
	char *oli;				/* option letter list index */

	if (ostr == NULL)
		return (-1);

	if (BSDoptreset || !*place) {		/* update scanning pointer */
		BSDoptreset = 0;
		if (BSDoptind >= nargc || *(place = nargv[BSDoptind]) != '-') {
			place = EMSG;
			return (-1);
		}
		if (place[1] && *++place == '-') {	/* found "--" */
			++BSDoptind;
			place = EMSG;
			return (-1);
		}
	}					/* option letter okay? */
	if ((BSDoptopt = (int)*place++) == (int)':' ||
	    !(oli = strchr(ostr, BSDoptopt))) {
		/*
		 * if the user didn't specify '-' as an option,
		 * assume it means -1.
		 */
		if (BSDoptopt == (int)'-')
			return (-1);
		if (!*place)
			++BSDoptind;
		if (BSDopterr && *ostr != ':')
			(void)fprintf(stderr,
			    "%s: illegal option -- %c\n", __progname, BSDoptopt);
		return (BADCH);
	}
	if (*++oli != ':') {			/* don't need argument */
		BSDoptarg = NULL;
		if (!*place)
			++BSDoptind;
	}
	else {					/* need an argument */
		if (*place)			/* no white space */
			BSDoptarg = place;
		else if (nargc <= ++BSDoptind) {	/* no arg */
			place = EMSG;
			if (*ostr == ':')
				return (BADARG);
			if (BSDopterr)
				(void)fprintf(stderr,
				    "%s: option requires an argument -- %c\n",
				    __progname, BSDoptopt);
			return (BADCH);
		}
	 	else				/* white space */
			BSDoptarg = nargv[BSDoptind];
		place = EMSG;
		++BSDoptind;
	}
	return (BSDoptopt);			/* dump back option letter */
}

#endif /* !defined(HAVE_GETOPT) || !defined(HAVE_OPTRESET) */
Commit	Line	Data
1812a662	1	/*
	2	* Copyright (c) 1987, 1993, 1994
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
3e67f7df	13	* 3. Neither the name of the University nor the names of its contributors
1812a662	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*/
	29
f6d4fb87	30	/* OPENBSD ORIGINAL: lib/libc/stdlib/getopt.c */
f6d4fb87	31
17962c40	32	#include "includes.h"
1812a662	33	#if !defined(HAVE_GETOPT) \|\| !defined(HAVE_GETOPT_OPTRESET)
	34
	35	#if defined(LIBC_SCCS) && !defined(lint)
3e67f7df	36	static char *rcsid = "$OpenBSD: getopt.c,v 1.5 2003/06/02 20:18:37 millert Exp $";
1812a662	37	#endif /* LIBC_SCCS and not lint */
	38
	39	#include <stdio.h>
	40	#include <stdlib.h>
	41	#include <string.h>
	42
d76aa6fb	43	int BSDopterr = 1, /* if error message should be printed */
	44	BSDoptind = 1, /* index into parent argv vector */
	45	BSDoptopt, /* character checked for validity */
	46	BSDoptreset; /* reset getopt */
	47	char BSDoptarg; / argument associated with option */
1812a662	48
	49	#define BADCH (int)'?'
	50	#define BADARG (int)':'
	51	#define EMSG ""
	52
	53	/*
	54	* getopt --
	55	* Parse argc/argv argument vector.
	56	*/
	57	int
cb547f98	58	BSDgetopt(nargc, nargv, ostr)
1812a662	59	int nargc;
	60	char * const *nargv;
	61	const char *ostr;
	62	{
	63	extern char *__progname;
	64	static char place = EMSG; / option letter processing */
	65	char oli; / option letter list index */
	66
7bb526ce	67	if (ostr == NULL)
	68	return (-1);
	69
d76aa6fb	70	if (BSDoptreset \|\| !place) { / update scanning pointer */
	71	BSDoptreset = 0;
	72	if (BSDoptind >= nargc \|\| *(place = nargv[BSDoptind]) != '-') {
1812a662	73	place = EMSG;
	74	return (-1);
	75	}
	76	if (place[1] && ++place == '-') { / found "--" */
d76aa6fb	77	++BSDoptind;
1812a662	78	place = EMSG;
	79	return (-1);
	80	}
	81	} /* option letter okay? */
d76aa6fb	82	if ((BSDoptopt = (int)*place++) == (int)':' \|\|
d76aa6fb	83	!(oli = strchr(ostr, BSDoptopt))) {
1812a662	84	/*
	85	* if the user didn't specify '-' as an option,
	86	* assume it means -1.
	87	*/
d76aa6fb	88	if (BSDoptopt == (int)'-')
1812a662	89	return (-1);
1812a662	90	if (!*place)
d76aa6fb	91	++BSDoptind;
d76aa6fb	92	if (BSDopterr && *ostr != ':')
1812a662	93	(void)fprintf(stderr,
d76aa6fb	94	"%s: illegal option -- %c\n", __progname, BSDoptopt);
1812a662	95	return (BADCH);
	96	}
	97	if (++oli != ':') { / don't need argument */
d76aa6fb	98	BSDoptarg = NULL;
1812a662	99	if (!*place)
d76aa6fb	100	++BSDoptind;
1812a662	101	}
	102	else { /* need an argument */
	103	if (place) / no white space */
d76aa6fb	104	BSDoptarg = place;
d76aa6fb	105	else if (nargc <= ++BSDoptind) { /* no arg */
1812a662	106	place = EMSG;
	107	if (*ostr == ':')
	108	return (BADARG);
d76aa6fb	109	if (BSDopterr)
1812a662	110	(void)fprintf(stderr,
1812a662	111	"%s: option requires an argument -- %c\n",
d76aa6fb	112	__progname, BSDoptopt);
1812a662	113	return (BADCH);
	114	}
	115	else /* white space */
d76aa6fb	116	BSDoptarg = nargv[BSDoptind];
1812a662	117	place = EMSG;
d76aa6fb	118	++BSDoptind;
1812a662	119	}
d76aa6fb	120	return (BSDoptopt); /* dump back option letter */
1812a662	121	}
	122
	123	#endif /* !defined(HAVE_GETOPT) \|\| !defined(HAVE_OPTRESET) */