Attachment #2258 for bug #1448

View | Details | Raw Unified | Return to bug 1448 | Differences between
Collapse All | Expand All




/*	$OpenBSD: getopt_long.c,v 1.25 2011/03/05 22:10:11 guenther Exp $	*/
/*	$NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $	*/

/*
 * Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 *
 * Sponsored in part by the Defense Advanced Research Projects
 * Agency (DARPA) and Air Force Research Laboratory, Air Force
 * Materiel Command, USAF, under agreement number F39502-99-1-0512.
 */
/*-
 * Copyright (c) 2000 The NetBSD Foundation, Inc.
 * All rights reserved.
 *
 * This code is derived from software contributed to The NetBSD Foundation
 * by Dieter Baron and Thomas Klausner.
 *
 * 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.
 *
 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. 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 FOUNDATION 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 <err.h>
#include <errno.h>
#include <getopt.h>
#include <stdlib.h>
#include <string.h>

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

#define PRINT_ERROR	((opterr) && (*options != ':'))

#define FLAG_PERMUTE	0x01	/* permute non-options to the end of argv */
#define FLAG_ALLARGS	0x02	/* treat non-options as args to option "-1" */
#define FLAG_LONGONLY	0x04	/* operate as getopt_long_only */

/* return values */
#define	BADCH		(int)'?'
#define	BADARG		((*options == ':') ? (int)':' : (int)'?')
#define	INORDER 	(int)1

#define	EMSG		""

static int getopt_internal(int, char * const *, const char *,
			   const struct option *, int *, int);
static int parse_long_options(char * const *, const char *,
			      const struct option *, int *, int);
static int gcd(int, int);
static void permute_args(int, int, int, char * const *);

static char *place = EMSG; /* option letter processing */

/* XXX: set optreset to 1 rather than these two */
static int nonopt_start = -1; /* first non option argument (for permute) */
static int nonopt_end = -1;   /* first option after non options (for permute) */

/* Error messages */
static const char recargchar[] = "option requires an argument -- %c";
static const char recargstring[] = "option requires an argument -- %s";
static const char ambig[] = "ambiguous option -- %.*s";
static const char noarg[] = "option doesn't take an argument -- %.*s";
static const char illoptchar[] = "unknown option -- %c";
static const char illoptstring[] = "unknown option -- %s";

/*
 * Compute the greatest common divisor of a and b.
 */
static int
gcd(int a, int b)
{
	int c;

	c = a % b;
	while (c != 0) {
		a = b;
		b = c;
		c = a % b;
	}

	return (b);
}

/*
 * Exchange the block from nonopt_start to nonopt_end with the block
 * from nonopt_end to opt_end (keeping the same order of arguments
 * in each block).
 */
static void
permute_args(int panonopt_start, int panonopt_end, int opt_end,
	char * const *nargv)
{
	int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
	char *swap;

	/*
	 * compute lengths of blocks and number and size of cycles
	 */
	nnonopts = panonopt_end - panonopt_start;
	nopts = opt_end - panonopt_end;
	ncycle = gcd(nnonopts, nopts);
	cyclelen = (opt_end - panonopt_start) / ncycle;

	for (i = 0; i < ncycle; i++) {
		cstart = panonopt_end+i;
		pos = cstart;
		for (j = 0; j < cyclelen; j++) {
			if (pos >= panonopt_end)
				pos -= nnonopts;
			else
				pos += nopts;
			swap = nargv[pos];
			/* LINTED const cast */
			((char **) nargv)[pos] = nargv[cstart];
			/* LINTED const cast */
			((char **)nargv)[cstart] = swap;
		}
	}
}

/*
 * parse_long_options --
 *	Parse long options in argc/argv argument vector.
 * Returns -1 if short_too is set and the option does not match long_options.
 */
static int
parse_long_options(char * const *nargv, const char *options,
	const struct option *long_options, int *idx, int short_too)
{
	char *current_argv, *has_equal;
	size_t current_argv_len;
	int i, match;

	current_argv = place;
	match = -1;

	optind++;

	if ((has_equal = strchr(current_argv, '=')) != NULL) {
		/* argument found (--option=arg) */
		current_argv_len = has_equal - current_argv;
		has_equal++;
	} else
		current_argv_len = strlen(current_argv);

	for (i = 0; long_options[i].name; i++) {
		/* find matching long option */
		if (strncmp(current_argv, long_options[i].name,
		    current_argv_len))
			continue;

		if (strlen(long_options[i].name) == current_argv_len) {
			/* exact match */
			match = i;
			break;
		}
		/*
		 * If this is a known short option, don't allow
		 * a partial match of a single character.
		 */
		if (short_too && current_argv_len == 1)
			continue;

		if (match == -1)	/* partial match */
			match = i;
		else {
			/* ambiguous abbreviation */
			if (PRINT_ERROR)
				warnx(ambig, (int)current_argv_len,
				     current_argv);
			optopt = 0;
			return (BADCH);
		}
	}
	if (match != -1) {		/* option found */
		if (long_options[match].has_arg == no_argument
		    && has_equal) {
			if (PRINT_ERROR)
				warnx(noarg, (int)current_argv_len,
				     current_argv);
			/*
			 * XXX: GNU sets optopt to val regardless of flag
			 */
			if (long_options[match].flag == NULL)
				optopt = long_options[match].val;
			else
				optopt = 0;
			return (BADARG);
		}
		if (long_options[match].has_arg == required_argument ||
		    long_options[match].has_arg == optional_argument) {
			if (has_equal)
				optarg = has_equal;
			else if (long_options[match].has_arg ==
			    required_argument) {
				/*
				 * optional argument doesn't use next nargv
				 */
				optarg = nargv[optind++];
			}
		}
		if ((long_options[match].has_arg == required_argument)
		    && (optarg == NULL)) {
			/*
			 * Missing argument; leading ':' indicates no error
			 * should be generated.
			 */
			if (PRINT_ERROR)
				warnx(recargstring,
				    current_argv);
			/*
			 * XXX: GNU sets optopt to val regardless of flag
			 */
			if (long_options[match].flag == NULL)
				optopt = long_options[match].val;
			else
				optopt = 0;
			--optind;
			return (BADARG);
		}
	} else {			/* unknown option */
		if (short_too) {
			--optind;
			return (-1);
		}
		if (PRINT_ERROR)
			warnx(illoptstring, current_argv);
		optopt = 0;
		return (BADCH);
	}
	if (idx)
		*idx = match;
	if (long_options[match].flag) {
		*long_options[match].flag = long_options[match].val;
		return (0);
	} else
		return (long_options[match].val);
}

/*
 * getopt_internal --
 *	Parse argc/argv argument vector.  Called by user level routines.
 */
static int
getopt_internal(int nargc, char * const *nargv, const char *options,
	const struct option *long_options, int *idx, int flags)
{
	char *oli;				/* option letter list index */
	int optchar, short_too;
	static int posixly_correct = -1;

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

	/*
	 * XXX Some GNU programs (like cvs) set optind to 0 instead of
	 * XXX using optreset.  Work around this braindamage.
	 */
	if (optind == 0)
		optind = optreset = 1;

	/*
	 * Disable GNU extensions if POSIXLY_CORRECT is set or options
	 * string begins with a '+'.
	 */
	if (posixly_correct == -1 || optreset)
		posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
	if (*options == '-')
		flags |= FLAG_ALLARGS;
	else if (posixly_correct || *options == '+')
		flags &= ~FLAG_PERMUTE;
	if (*options == '+' || *options == '-')
		options++;

	optarg = NULL;
	if (optreset)
		nonopt_start = nonopt_end = -1;
start:
	if (optreset || !*place) {		/* update scanning pointer */
		optreset = 0;
		if (optind >= nargc) {          /* end of argument vector */
			place = EMSG;
			if (nonopt_end != -1) {
				/* do permutation, if we have to */
				permute_args(nonopt_start, nonopt_end,
				    optind, nargv);
				optind -= nonopt_end - nonopt_start;
			}
			else if (nonopt_start != -1) {
				/*
				 * If we skipped non-options, set optind
				 * to the first of them.
				 */
				optind = nonopt_start;
			}
			nonopt_start = nonopt_end = -1;
			return (-1);
		}
		if (*(place = nargv[optind]) != '-' ||
		    (place[1] == '\0' && strchr(options, '-') == NULL)) {
			place = EMSG;		/* found non-option */
			if (flags & FLAG_ALLARGS) {
				/*
				 * GNU extension:
				 * return non-option as argument to option 1
				 */
				optarg = nargv[optind++];
				return (INORDER);
			}
			if (!(flags & FLAG_PERMUTE)) {
				/*
				 * If no permutation wanted, stop parsing
				 * at first non-option.
				 */
				return (-1);
			}
			/* do permutation */
			if (nonopt_start == -1)
				nonopt_start = optind;
			else if (nonopt_end != -1) {
				permute_args(nonopt_start, nonopt_end,
				    optind, nargv);
				nonopt_start = optind -
				    (nonopt_end - nonopt_start);
				nonopt_end = -1;
			}
			optind++;
			/* process next argument */
			goto start;
		}
		if (nonopt_start != -1 && nonopt_end == -1)
			nonopt_end = optind;

		/*
		 * If we have "-" do nothing, if "--" we are done.
		 */
		if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
			optind++;
			place = EMSG;
			/*
			 * We found an option (--), so if we skipped
			 * non-options, we have to permute.
			 */
			if (nonopt_end != -1) {
				permute_args(nonopt_start, nonopt_end,
				    optind, nargv);
				optind -= nonopt_end - nonopt_start;
			}
			nonopt_start = nonopt_end = -1;
			return (-1);
		}
	}

	/*
	 * Check long options if:
	 *  1) we were passed some
	 *  2) the arg is not just "-"
	 *  3) either the arg starts with -- we are getopt_long_only()
	 */
	if (long_options != NULL && place != nargv[optind] &&
	    (*place == '-' || (flags & FLAG_LONGONLY))) {
		short_too = 0;
		if (*place == '-')
			place++;		/* --foo long option */
		else if (*place != ':' && strchr(options, *place) != NULL)
			short_too = 1;		/* could be short option too */

		optchar = parse_long_options(nargv, options, long_options,
		    idx, short_too);
		if (optchar != -1) {
			place = EMSG;
			return (optchar);
		}
	}

	if ((optchar = (int)*place++) == (int)':' ||
	    (optchar == (int)'-' && *place != '\0') ||
	    (oli = strchr(options, optchar)) == NULL) {
		/*
		 * If the user specified "-" and  '-' isn't listed in
		 * options, return -1 (non-option) as per POSIX.
		 * Otherwise, it is an unknown option character (or ':').
		 */
		if (optchar == (int)'-' && *place == '\0')
			return (-1);
		if (!*place)
			++optind;
		if (PRINT_ERROR)
			warnx(illoptchar, optchar);
		optopt = optchar;
		return (BADCH);
	}
	if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
		/* -W long-option */
		if (*place)			/* no space */
			/* NOTHING */;
		else if (++optind >= nargc) {	/* no arg */
			place = EMSG;
			if (PRINT_ERROR)
				warnx(recargchar, optchar);
			optopt = optchar;
			return (BADARG);
		} else				/* white space */
			place = nargv[optind];
		optchar = parse_long_options(nargv, options, long_options,
		    idx, 0);
		place = EMSG;
		return (optchar);
	}
	if (*++oli != ':') {			/* doesn't take argument */
		if (!*place)
			++optind;
	} else {				/* takes (optional) argument */
		optarg = NULL;
		if (*place)			/* no white space */
			optarg = place;
		else if (oli[1] != ':') {	/* arg not optional */
			if (++optind >= nargc) {	/* no arg */
				place = EMSG;
				if (PRINT_ERROR)
					warnx(recargchar, optchar);
				optopt = optchar;
				return (BADARG);
			} else
				optarg = nargv[optind];
		}
		place = EMSG;
		++optind;
	}
	/* dump back option letter */
	return (optchar);
}

/*
 * getopt --
 *	Parse argc/argv argument vector.
 *
 * [eventually this will replace the BSD getopt]
 */
int
getopt(int nargc, char * const *nargv, const char *options)
{

	/*
	 * We don't pass FLAG_PERMUTE to getopt_internal() since
	 * the BSD getopt(3) (unlike GNU) has never done this.
	 *
	 * Furthermore, since many privileged programs call getopt()
	 * before dropping privileges it makes sense to keep things
	 * as simple (and bug-free) as possible.
	 */
	return (getopt_internal(nargc, nargv, options, NULL, NULL, 0));
}

/*
 * getopt_long --
 *	Parse argc/argv argument vector.
 */
int
getopt_long(int nargc, char * const *nargv, const char *options,
    const struct option *long_options, int *idx)
{

	return (getopt_internal(nargc, nargv, options, long_options, idx,
	    FLAG_PERMUTE));
}

/*
 * getopt_long_only --
 *	Parse argc/argv argument vector.
 */
int
getopt_long_only(int nargc, char * const *nargv, const char *options,
    const struct option *long_options, int *idx)
{

	return (getopt_internal(nargc, nargv, options, long_options, idx,
	    FLAG_PERMUTE|FLAG_LONGONLY));
}

Return to bug 1448

Added Link Here

(-)openbsd-compat/getopt_long.c (+511 lines)
1	/* $OpenBSD: getopt_long.c,v 1.25 2011/03/05 22:10:11 guenther Exp $ */
2	/* $NetBSD: getopt_long.c,v 1.15 2002/01/31 22:43:40 tv Exp $ */
3
4	/*
5	* Copyright (c) 2002 Todd C. Miller <Todd.Miller@courtesan.com>
6	*
7	* Permission to use, copy, modify, and distribute this software for any
8	* purpose with or without fee is hereby granted, provided that the above
9	* copyright notice and this permission notice appear in all copies.
10	*
11	* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
12	* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
13	* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
14	* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
15	* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
16	* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
17	* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
18	*
19	* Sponsored in part by the Defense Advanced Research Projects
20	* Agency (DARPA) and Air Force Research Laboratory, Air Force
21	* Materiel Command, USAF, under agreement number F39502-99-1-0512.
22	*/
23	/*-
24	* Copyright (c) 2000 The NetBSD Foundation, Inc.
25	* All rights reserved.
26	*
27	* This code is derived from software contributed to The NetBSD Foundation
28	* by Dieter Baron and Thomas Klausner.
29	*
30	* Redistribution and use in source and binary forms, with or without
31	* modification, are permitted provided that the following conditions
32	* are met:
33	* 1. Redistributions of source code must retain the above copyright
34	* notice, this list of conditions and the following disclaimer.
35	* 2. Redistributions in binary form must reproduce the above copyright
36	* notice, this list of conditions and the following disclaimer in the
37	* documentation and/or other materials provided with the distribution.
38	*
39	* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
40	* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
41	* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42	* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
43	* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
44	* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
45	* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
46	* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
47	* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
48	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
49	* POSSIBILITY OF SUCH DAMAGE.
50	*/
51
52	#include <err.h>
53	#include <errno.h>
54	#include <getopt.h>
55	#include <stdlib.h>
56	#include <string.h>
57
58	int opterr = 1; /* if error message should be printed */
59	int optind = 1; /* index into parent argv vector */
60	int optopt = '?'; /* character checked for validity */
61	int optreset; /* reset getopt */
62	char optarg; / argument associated with option */
63
64	#define PRINT_ERROR ((opterr) && (*options != ':'))
65
66	#define FLAG_PERMUTE 0x01 /* permute non-options to the end of argv */
67	#define FLAG_ALLARGS 0x02 /* treat non-options as args to option "-1" */
68	#define FLAG_LONGONLY 0x04 /* operate as getopt_long_only */
69
70	/* return values */
71	#define BADCH (int)'?'
72	#define BADARG ((*options == ':') ? (int)':' : (int)'?')
73	#define INORDER (int)1
74
75	#define EMSG ""
76
77	static int getopt_internal(int, char * const , const char ,
78	const struct option , int , int);
79	static int parse_long_options(char * const , const char ,
80	const struct option , int , int);
81	static int gcd(int, int);
82	static void permute_args(int, int, int, char * const *);
83
84	static char place = EMSG; / option letter processing */
85
86	/* XXX: set optreset to 1 rather than these two */
87	static int nonopt_start = -1; /* first non option argument (for permute) */
88	static int nonopt_end = -1; /* first option after non options (for permute) */
89
90	/* Error messages */
91	static const char recargchar[] = "option requires an argument -- %c";
92	static const char recargstring[] = "option requires an argument -- %s";
93	static const char ambig[] = "ambiguous option -- %.*s";
94	static const char noarg[] = "option doesn't take an argument -- %.*s";
95	static const char illoptchar[] = "unknown option -- %c";
96	static const char illoptstring[] = "unknown option -- %s";
97
98	/*
99	* Compute the greatest common divisor of a and b.
100	*/
101	static int
102	gcd(int a, int b)
103	{
104	int c;
105
106	c = a % b;
107	while (c != 0) {
108	a = b;
109	b = c;
110	c = a % b;
111	}
112
113	return (b);
114	}
115
116	/*
117	* Exchange the block from nonopt_start to nonopt_end with the block
118	* from nonopt_end to opt_end (keeping the same order of arguments
119	* in each block).
120	*/
121	static void
122	permute_args(int panonopt_start, int panonopt_end, int opt_end,
123	char * const *nargv)
124	{
125	int cstart, cyclelen, i, j, ncycle, nnonopts, nopts, pos;
126	char *swap;
127
128	/*
129	* compute lengths of blocks and number and size of cycles
130	*/
131	nnonopts = panonopt_end - panonopt_start;
132	nopts = opt_end - panonopt_end;
133	ncycle = gcd(nnonopts, nopts);
134	cyclelen = (opt_end - panonopt_start) / ncycle;
135
136	for (i = 0; i < ncycle; i++) {
137	cstart = panonopt_end+i;
138	pos = cstart;
139	for (j = 0; j < cyclelen; j++) {
140	if (pos >= panonopt_end)
141	pos -= nnonopts;
142	else
143	pos += nopts;
144	swap = nargv[pos];
145	/* LINTED const cast */
146	((char **) nargv)[pos] = nargv[cstart];
147	/* LINTED const cast */
148	((char **)nargv)[cstart] = swap;
149	}
150	}
151	}
152
153	/*
154	* parse_long_options --
155	* Parse long options in argc/argv argument vector.
156	* Returns -1 if short_too is set and the option does not match long_options.
157	*/
158	static int
159	parse_long_options(char * const nargv, const char options,
160	const struct option long_options, int idx, int short_too)
161	{
162	char current_argv, has_equal;
163	size_t current_argv_len;
164	int i, match;
165
166	current_argv = place;
167	match = -1;
168
169	optind++;
170
171	if ((has_equal = strchr(current_argv, '=')) != NULL) {
172	/* argument found (--option=arg) */
173	current_argv_len = has_equal - current_argv;
174	has_equal++;
175	} else
176	current_argv_len = strlen(current_argv);
177
178	for (i = 0; long_options[i].name; i++) {
179	/* find matching long option */
180	if (strncmp(current_argv, long_options[i].name,
181	current_argv_len))
182	continue;
183
184	if (strlen(long_options[i].name) == current_argv_len) {
185	/* exact match */
186	match = i;
187	break;
188	}
189	/*
190	* If this is a known short option, don't allow
191	* a partial match of a single character.
192	*/
193	if (short_too && current_argv_len == 1)
194	continue;
195
196	if (match == -1) /* partial match */
197	match = i;
198	else {
199	/* ambiguous abbreviation */
200	if (PRINT_ERROR)
201	warnx(ambig, (int)current_argv_len,
202	current_argv);
203	optopt = 0;
204	return (BADCH);
205	}
206	}
207	if (match != -1) { /* option found */
208	if (long_options[match].has_arg == no_argument
209	&& has_equal) {
210	if (PRINT_ERROR)
211	warnx(noarg, (int)current_argv_len,
212	current_argv);
213	/*
214	* XXX: GNU sets optopt to val regardless of flag
215	*/
216	if (long_options[match].flag == NULL)
217	optopt = long_options[match].val;
218	else
219	optopt = 0;
220	return (BADARG);
221	}
222	if (long_options[match].has_arg == required_argument \|\|
223	long_options[match].has_arg == optional_argument) {
224	if (has_equal)
225	optarg = has_equal;
226	else if (long_options[match].has_arg ==
227	required_argument) {
228	/*
229	* optional argument doesn't use next nargv
230	*/
231	optarg = nargv[optind++];
232	}
233	}
234	if ((long_options[match].has_arg == required_argument)
235	&& (optarg == NULL)) {
236	/*
237	* Missing argument; leading ':' indicates no error
238	* should be generated.
239	*/
240	if (PRINT_ERROR)
241	warnx(recargstring,
242	current_argv);
243	/*
244	* XXX: GNU sets optopt to val regardless of flag
245	*/
246	if (long_options[match].flag == NULL)
247	optopt = long_options[match].val;
248	else
249	optopt = 0;
250	--optind;
251	return (BADARG);
252	}
253	} else { /* unknown option */
254	if (short_too) {
255	--optind;
256	return (-1);
257	}
258	if (PRINT_ERROR)
259	warnx(illoptstring, current_argv);
260	optopt = 0;
261	return (BADCH);
262	}
263	if (idx)
264	*idx = match;
265	if (long_options[match].flag) {
266	*long_options[match].flag = long_options[match].val;
267	return (0);
268	} else
269	return (long_options[match].val);
270	}
271
272	/*
273	* getopt_internal --
274	* Parse argc/argv argument vector. Called by user level routines.
275	*/
276	static int
277	getopt_internal(int nargc, char * const nargv, const char options,
278	const struct option long_options, int idx, int flags)
279	{
280	char oli; / option letter list index */
281	int optchar, short_too;
282	static int posixly_correct = -1;
283
284	if (options == NULL)
285	return (-1);
286
287	/*
288	* XXX Some GNU programs (like cvs) set optind to 0 instead of
289	* XXX using optreset. Work around this braindamage.
290	*/
291	if (optind == 0)
292	optind = optreset = 1;
293
294	/*
295	* Disable GNU extensions if POSIXLY_CORRECT is set or options
296	* string begins with a '+'.
297	*/
298	if (posixly_correct == -1 \|\| optreset)
299	posixly_correct = (getenv("POSIXLY_CORRECT") != NULL);
300	if (*options == '-')
301	flags \|= FLAG_ALLARGS;
302	else if (posixly_correct \|\| *options == '+')
303	flags &= ~FLAG_PERMUTE;
304	if (options == '+' \|\| options == '-')
305	options++;
306
307	optarg = NULL;
308	if (optreset)
309	nonopt_start = nonopt_end = -1;
310	start:
311	if (optreset \|\| !place) { / update scanning pointer */
312	optreset = 0;
313	if (optind >= nargc) { /* end of argument vector */
314	place = EMSG;
315	if (nonopt_end != -1) {
316	/* do permutation, if we have to */
317	permute_args(nonopt_start, nonopt_end,
318	optind, nargv);
319	optind -= nonopt_end - nonopt_start;
320	}
321	else if (nonopt_start != -1) {
322	/*
323	* If we skipped non-options, set optind
324	* to the first of them.
325	*/
326	optind = nonopt_start;
327	}
328	nonopt_start = nonopt_end = -1;
329	return (-1);
330	}
331	if (*(place = nargv[optind]) != '-' \|\|
332	(place[1] == '\0' && strchr(options, '-') == NULL)) {
333	place = EMSG; /* found non-option */
334	if (flags & FLAG_ALLARGS) {
335	/*
336	* GNU extension:
337	* return non-option as argument to option 1
338	*/
339	optarg = nargv[optind++];
340	return (INORDER);
341	}
342	if (!(flags & FLAG_PERMUTE)) {
343	/*
344	* If no permutation wanted, stop parsing
345	* at first non-option.
346	*/
347	return (-1);
348	}
349	/* do permutation */
350	if (nonopt_start == -1)
351	nonopt_start = optind;
352	else if (nonopt_end != -1) {
353	permute_args(nonopt_start, nonopt_end,
354	optind, nargv);
355	nonopt_start = optind -
356	(nonopt_end - nonopt_start);
357	nonopt_end = -1;
358	}
359	optind++;
360	/* process next argument */
361	goto start;
362	}
363	if (nonopt_start != -1 && nonopt_end == -1)
364	nonopt_end = optind;
365
366	/*
367	* If we have "-" do nothing, if "--" we are done.
368	*/
369	if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
370	optind++;
371	place = EMSG;
372	/*
373	* We found an option (--), so if we skipped
374	* non-options, we have to permute.
375	*/
376	if (nonopt_end != -1) {
377	permute_args(nonopt_start, nonopt_end,
378	optind, nargv);
379	optind -= nonopt_end - nonopt_start;
380	}
381	nonopt_start = nonopt_end = -1;
382	return (-1);
383	}
384	}
385
386	/*
387	* Check long options if:
388	* 1) we were passed some
389	* 2) the arg is not just "-"
390	* 3) either the arg starts with -- we are getopt_long_only()
391	*/
392	if (long_options != NULL && place != nargv[optind] &&
393	(*place == '-' \|\| (flags & FLAG_LONGONLY))) {
394	short_too = 0;
395	if (*place == '-')
396	place++; /* --foo long option */
397	else if (place != ':' && strchr(options, place) != NULL)
398	short_too = 1; /* could be short option too */
399
400	optchar = parse_long_options(nargv, options, long_options,
401	idx, short_too);
402	if (optchar != -1) {
403	place = EMSG;
404	return (optchar);
405	}
406	}
407
408	if ((optchar = (int)*place++) == (int)':' \|\|
409	(optchar == (int)'-' && *place != '\0') \|\|
410	(oli = strchr(options, optchar)) == NULL) {
411	/*
412	* If the user specified "-" and '-' isn't listed in
413	* options, return -1 (non-option) as per POSIX.
414	* Otherwise, it is an unknown option character (or ':').
415	*/
416	if (optchar == (int)'-' && *place == '\0')
417	return (-1);
418	if (!*place)
419	++optind;
420	if (PRINT_ERROR)
421	warnx(illoptchar, optchar);
422	optopt = optchar;
423	return (BADCH);
424	}
425	if (long_options != NULL && optchar == 'W' && oli[1] == ';') {
426	/* -W long-option */
427	if (place) / no space */
428	/* NOTHING */;
429	else if (++optind >= nargc) { /* no arg */
430	place = EMSG;
431	if (PRINT_ERROR)
432	warnx(recargchar, optchar);
433	optopt = optchar;
434	return (BADARG);
435	} else /* white space */
436	place = nargv[optind];
437	optchar = parse_long_options(nargv, options, long_options,
438	idx, 0);
439	place = EMSG;
440	return (optchar);
441	}
442	if (++oli != ':') { / doesn't take argument */
443	if (!*place)
444	++optind;
445	} else { /* takes (optional) argument */
446	optarg = NULL;
447	if (place) / no white space */
448	optarg = place;
449	else if (oli[1] != ':') { /* arg not optional */
450	if (++optind >= nargc) { /* no arg */
451	place = EMSG;
452	if (PRINT_ERROR)
453	warnx(recargchar, optchar);
454	optopt = optchar;
455	return (BADARG);
456	} else
457	optarg = nargv[optind];
458	}
459	place = EMSG;
460	++optind;
461	}
462	/* dump back option letter */
463	return (optchar);
464	}
465
466	/*
467	* getopt --
468	* Parse argc/argv argument vector.
469	*
470	* [eventually this will replace the BSD getopt]
471	*/
472	int
473	getopt(int nargc, char * const nargv, const char options)
474	{
475
476	/*
477	* We don't pass FLAG_PERMUTE to getopt_internal() since
478	* the BSD getopt(3) (unlike GNU) has never done this.
479	*
480	* Furthermore, since many privileged programs call getopt()
481	* before dropping privileges it makes sense to keep things
482	* as simple (and bug-free) as possible.
483	*/
484	return (getopt_internal(nargc, nargv, options, NULL, NULL, 0));
485	}
486
487	/*
488	* getopt_long --
489	* Parse argc/argv argument vector.
490	*/
491	int
492	getopt_long(int nargc, char * const nargv, const char options,
493	const struct option long_options, int idx)
494	{
495
496	return (getopt_internal(nargc, nargv, options, long_options, idx,
497	FLAG_PERMUTE));
498	}
499
500	/*
501	* getopt_long_only --
502	* Parse argc/argv argument vector.
503	*/
504	int
505	getopt_long_only(int nargc, char * const nargv, const char options,
506	const struct option long_options, int idx)
507	{
508
509	return (getopt_internal(nargc, nargv, options, long_options, idx,
510	FLAG_PERMUTE\|FLAG_LONGONLY));
511	}