[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. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *	This product includes software developed by the University of
 *	California, Berkeley and its contributors.
 * 4. 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.
 */

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

#if defined(LIBC_SCCS) && !defined(lint)
static char *rcsid = "$OpenBSD: getopt.c,v 1.2 1996/08/19 08:33:32 tholo Exp $";
#endif /* LIBC_SCCS and not lint */

#include <stdio.h>
#include <stdlib.h>
#include <string.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(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 (optreset || !*place) {		/* update scanning pointer */
		optreset = 0;
		if (optind >= nargc || *(place = nargv[optind]) != '-') {
			place = EMSG;
			return (-1);
		}
		if (place[1] && *++place == '-') {	/* found "--" */
			++optind;
			place = EMSG;
			return (-1);
		}
	}					/* option letter okay? */
	if ((optopt = (int)*place++) == (int)':' ||
	    !(oli = strchr(ostr, optopt))) {
		/*
		 * if the user didn't specify '-' as an option,
		 * assume it means -1.
		 */
		if (optopt == (int)'-')
			return (-1);
		if (!*place)
			++optind;
		if (opterr && *ostr != ':')
			(void)fprintf(stderr,
			    "%s: illegal option -- %c\n", __progname, optopt);
		return (BADCH);
	}
	if (*++oli != ':') {			/* don't need argument */
		optarg = NULL;
		if (!*place)
			++optind;
	}
	else {					/* need an argument */
		if (*place)			/* no white space */
			optarg = place;
		else if (nargc <= ++optind) {	/* no arg */
			place = EMSG;
			if (*ostr == ':')
				return (BADARG);
			if (opterr)
				(void)fprintf(stderr,
				    "%s: option requires an argument -- %c\n",
				    __progname, optopt);
			return (BADCH);
		}
	 	else				/* white space */
			optarg = nargv[optind];
		place = EMSG;
		++optind;
	}
	return (optopt);			/* 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.
	13	* 3. All advertising materials mentioning features or use of this software
	14	* must display the following acknowledgement:
	15	* This product includes software developed by the University of
	16	* California, Berkeley and its contributors.
	17	* 4. Neither the name of the University nor the names of its contributors
	18	* may be used to endorse or promote products derived from this software
	19	* without specific prior written permission.
	20	*
	21	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	22	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	23	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	24	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	25	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	26	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	27	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	28	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	29	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	30	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	31	* SUCH DAMAGE.
	32	*/
	33
	34	#include "config.h"
	35	#if !defined(HAVE_GETOPT) \|\| !defined(HAVE_GETOPT_OPTRESET)
	36
	37	#if defined(LIBC_SCCS) && !defined(lint)
	38	static char *rcsid = "$OpenBSD: getopt.c,v 1.2 1996/08/19 08:33:32 tholo Exp $";
	39	#endif /* LIBC_SCCS and not lint */
	40
	41	#include <stdio.h>
	42	#include <stdlib.h>
	43	#include <string.h>
	44
	45	int opterr = 1, /* if error message should be printed */
	46	optind = 1, /* index into parent argv vector */
	47	optopt, /* character checked for validity */
	48	optreset; /* reset getopt */
	49	char optarg; / argument associated with option */
	50
	51	#define BADCH (int)'?'
	52	#define BADARG (int)':'
	53	#define EMSG ""
	54
	55	/*
	56	* getopt --
	57	* Parse argc/argv argument vector.
	58	*/
	59	int
	60	getopt(nargc, nargv, ostr)
	61	int nargc;
	62	char * const *nargv;
	63	const char *ostr;
	64	{
65	extern char *__progname;
66	static char place = EMSG; / option letter processing */
67	char oli; / option letter list index */
68
69	if (optreset \|\| !place) { / update scanning pointer */
70	optreset = 0;
71	if (optind >= nargc \|\| *(place = nargv[optind]) != '-') {
72	place = EMSG;
73	return (-1);
74	}
75	if (place[1] && ++place == '-') { / found "--" */
76	++optind;
77	place = EMSG;
78	return (-1);
79	}
80	} /* option letter okay? */
81	if ((optopt = (int)*place++) == (int)':' \|\|
82	!(oli = strchr(ostr, optopt))) {
83	/*
84	* if the user didn't specify '-' as an option,
85	* assume it means -1.
86	*/
87	if (optopt == (int)'-')
88	return (-1);
89	if (!*place)
90	++optind;
91	if (opterr && *ostr != ':')
92	(void)fprintf(stderr,
93	"%s: illegal option -- %c\n", __progname, optopt);
94	return (BADCH);
95	}
96	if (++oli != ':') { / don't need argument */
97	optarg = NULL;
98	if (!*place)
99	++optind;
100	}
101	else { /* need an argument */
102	if (place) / no white space */
103	optarg = place;
104	else if (nargc <= ++optind) { /* no arg */
105	place = EMSG;
106	if (*ostr == ':')
107	return (BADARG);
108	if (opterr)
109	(void)fprintf(stderr,
110	"%s: option requires an argument -- %c\n",
111	__progname, optopt);
112	return (BADCH);
113	}
114	else /* white space */
115	optarg = nargv[optind];
116	place = EMSG;
117	++optind;
118	}
119	return (optopt); /* dump back option letter */
120	}
121
122	#endif /* !defined(HAVE_GETOPT) \|\| !defined(HAVE_OPTRESET) */