[apple/libc.git] / stdlib / getopt-fbsd.c

/*	$NetBSD: getopt.c,v 1.26 2003/08/07 16:43:40 agc Exp $	*/

/*
 * 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.
 */

#if defined(LIBC_SCCS) && !defined(lint)
static char sccsid[] = "@(#)getopt.c	8.3 (Berkeley) 4/27/95";
#endif /* LIBC_SCCS and not lint */
#include <sys/cdefs.h>
__FBSDID("$FreeBSD: src/lib/libc/stdlib/getopt.c,v 1.7 2004/03/06 17:05:45 ache Exp $");

#include "namespace.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "un-namespace.h"

#include "libc_private.h"

#ifndef BUILDING_VARIANT
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 */
#endif /* !BUILDING_VARIANT */

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

#if __DARWIN_UNIX03
#define PROGNAME nargv[0]
#else
#define PROGNAME _getprogname()
#endif

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

	if (optreset || *place == 0) {		/* update scanning pointer */
		optreset = 0;
		place = nargv[optind];
		if (optind >= nargc || *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(ostr, '-') == NULL)
				return (-1);
			optopt = '-';
		}
	} else
		optopt = *place++;

	/* See if option letter is one the caller wanted... */
	if (optopt == ':' || (oli = strchr(ostr, optopt)) == NULL) {
		if (*place == 0)
			++optind;
		if (opterr && *ostr != ':')
			(void)fprintf(stderr,
			    "%s: illegal option -- %c\n",
			    PROGNAME, 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 (nargc > ++optind)
			optarg = nargv[optind];
		else {
			/* option-argument absent */
#if __DARWIN_UNIX03
			/* Yes, the standard will put optind past the last
			   argument */
			++optind;
			optarg = NULL;
#endif /* __DARWIN_UNIX03 */
			place = EMSG;
			if (*ostr == ':')
				return (BADARG);
			if (opterr)
				(void)fprintf(stderr,
				    "%s: option requires an argument -- %c\n",
				    PROGNAME, optopt);
			return (BADCH);
		}
		place = EMSG;
		++optind;
	}
	return (optopt);			/* return option letter */
}
Commit	Line	Data
224c7076 A	1	/* $NetBSD: getopt.c,v 1.26 2003/08/07 16:43:40 agc Exp $ */
	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. All advertising materials mentioning features or use of this software
	16	* must display the following acknowledgement:
	17	* This product includes software developed by the University of
	18	* California, Berkeley and its contributors.
	19	* 4. Neither the name of the University nor the names of its contributors
	20	* may be used to endorse or promote products derived from this software
	21	* without specific prior written permission.
	22	*
	23	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	24	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	25	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	26	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	27	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	28	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	29	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	30	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	31	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	32	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	33	* SUCH DAMAGE.
	34	*/
	35
	36	#if defined(LIBC_SCCS) && !defined(lint)
	37	static char sccsid[] = "@(#)getopt.c 8.3 (Berkeley) 4/27/95";
	38	#endif /* LIBC_SCCS and not lint */
	39	#include <sys/cdefs.h>
	40	__FBSDID("$FreeBSD: src/lib/libc/stdlib/getopt.c,v 1.7 2004/03/06 17:05:45 ache Exp $");
	41
	42	#include "namespace.h"
	43	#include <stdio.h>
	44	#include <stdlib.h>
	45	#include <string.h>
	46	#include <unistd.h>
	47	#include "un-namespace.h"
	48
	49	#include "libc_private.h"
	50
	51	#ifndef BUILDING_VARIANT
	52	int opterr = 1, /* if error message should be printed */
	53	optind = 1, /* index into parent argv vector */
	54	optopt, /* character checked for validity */
	55	optreset; /* reset getopt */
	56	char optarg; / argument associated with option */
	57	#endif /* !BUILDING_VARIANT */
	58
	59	#define BADCH (int)'?'
	60	#define BADARG (int)':'
	61	#define EMSG ""
	62
	63	#if __DARWIN_UNIX03
	64	#define PROGNAME nargv[0]
65	#else
66	#define PROGNAME _getprogname()
67	#endif
68
69	/*
70	* getopt --
71	* Parse argc/argv argument vector.
72	*/
73	int
74	getopt(nargc, nargv, ostr)
75	int nargc;
76	char * const nargv[];
77	const char *ostr;
78	{
79	static char place = EMSG; / option letter processing */
80	char oli; / option letter list index */
81
82	if (optreset \|\| place == 0) { / update scanning pointer */
83	optreset = 0;
84	place = nargv[optind];
85	if (optind >= nargc \|\| *place++ != '-') {
86	/* Argument is absent or is not an option */
87	place = EMSG;
88	return (-1);
89	}
90	optopt = *place++;
91	if (optopt == '-' && *place == 0) {
92	/* "--" => end of options */
93	++optind;
94	place = EMSG;
95	return (-1);
96	}
97	if (optopt == 0) {
98	/* Solitary '-', treat as a '-' option
99	if the program (eg su) is looking for it. */
100	place = EMSG;
101	if (strchr(ostr, '-') == NULL)
102	return (-1);
103	optopt = '-';
104	}
105	} else
106	optopt = *place++;
107
108	/* See if option letter is one the caller wanted... */
109	if (optopt == ':' \|\| (oli = strchr(ostr, optopt)) == NULL) {
110	if (*place == 0)
111	++optind;
112	if (opterr && *ostr != ':')
113	(void)fprintf(stderr,
114	"%s: illegal option -- %c\n",
115	PROGNAME, optopt);
116	return (BADCH);
117	}
118
119	/* Does this option need an argument? */
120	if (oli[1] != ':') {
121	/* don't need argument */
122	optarg = NULL;
123	if (*place == 0)
124	++optind;
125	} else {
126	/* Option-argument is either the rest of this argument or the
127	entire next argument. */
128	if (*place)
129	optarg = place;
130	else if (nargc > ++optind)
131	optarg = nargv[optind];
132	else {
133	/* option-argument absent */
134	#if __DARWIN_UNIX03
135	/* Yes, the standard will put optind past the last
136	argument */
137	++optind;
138	optarg = NULL;
139	#endif /* __DARWIN_UNIX03 */
140	place = EMSG;
141	if (*ostr == ':')
142	return (BADARG);
143	if (opterr)
144	(void)fprintf(stderr,
145	"%s: option requires an argument -- %c\n",
146	PROGNAME, optopt);
147	return (BADCH);
148	}
149	place = EMSG;
150	++optind;
151	}
152	return (optopt); /* return option letter */
153	}