2010-06-21 Rodrigo Kumpera <rkumpera@novell.com>
[mono.git] / msvc05 / getopt_long.c
blob0065a3d6b26a9a6b7e0c5f37ea127525269483cd
1 /*
2 * getopt_long() -- long options parser
4 * Portions Copyright (c) 1987, 1993, 1994
5 * The Regents of the University of California. All rights reserved.
7 * Portions Copyright (c) 2003
8 * PostgreSQL Global Development Group
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 * 3. Neither the name of the University nor the names of its contributors
19 * may be used to endorse or promote products derived from this software
20 * without specific prior written permission.
22 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
23 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
24 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
25 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
26 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
27 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
34 * $PostgreSQL: pgsql/src/port/getopt_long.c,v 1.6 2007/03/26 21:44:11 momjian Exp $
37 #include <stdio.h>
38 #include <string.h>
39 #include "getopt_long.h"
41 #ifndef HAVE_INT_OPTRESET
42 int optreset;
43 #endif
45 #define BADCH '?'
46 #define BADARG ':'
47 #define EMSG ""
50 int
51 getopt_long(int argc, char *const argv[],
52 const char *optstring,
53 const struct option * longopts, int *longindex)
55 static char *place = EMSG; /* option letter processing */
56 char *oli; /* option letter list index */
58 if (optreset || !*place)
59 { /* update scanning pointer */
60 optreset = 0;
62 if (optind >= argc)
64 place = EMSG;
65 return -1;
68 place = argv[optind];
70 if (place[0] != '-')
72 place = EMSG;
73 return -1;
76 place++;
78 if (place[0] && place[0] == '-' && place[1] == '\0')
79 { /* found "--" */
80 ++optind;
81 place = EMSG;
82 return -1;
85 if (place[0] && place[0] == '-' && place[1])
87 /* long option */
88 size_t namelen;
89 int i;
91 place++;
93 namelen = strcspn(place, "=");
94 for (i = 0; longopts[i].name != NULL; i++)
96 if (strlen(longopts[i].name) == namelen
97 && strncmp(place, longopts[i].name, namelen) == 0)
99 if (longopts[i].has_arg)
101 if (place[namelen] == '=')
102 optarg = place + namelen + 1;
103 else if (optind < argc - 1)
105 optind++;
106 optarg = argv[optind];
108 else
110 if (optstring[0] == ':')
111 return BADARG;
112 if (opterr)
113 fprintf(stderr,
114 "%s: option requires an argument -- %s\n",
115 argv[0], place);
116 place = EMSG;
117 optind++;
118 return BADCH;
121 else
123 optarg = NULL;
124 if (place[namelen] != 0)
126 /* XXX error? */
130 optind++;
132 if (longindex)
133 *longindex = i;
135 place = EMSG;
137 if (longopts[i].flag == NULL)
138 return longopts[i].val;
139 else
141 *longopts[i].flag = longopts[i].val;
142 return 0;
147 if (opterr && optstring[0] != ':')
148 fprintf(stderr,
149 "%s: illegal option -- %s\n", argv[0], place);
150 place = EMSG;
151 optind++;
152 return BADCH;
156 /* short option */
157 optopt = (int) *place++;
159 oli = strchr(optstring, optopt);
160 if (!oli)
162 if (!*place)
163 ++optind;
164 if (opterr && *optstring != ':')
165 fprintf(stderr,
166 "%s: illegal option -- %c\n", argv[0], optopt);
167 return BADCH;
170 if (oli[1] != ':')
171 { /* don't need argument */
172 optarg = NULL;
173 if (!*place)
174 ++optind;
176 else
177 { /* need an argument */
178 if (*place) /* no white space */
179 optarg = place;
180 else if (argc <= ++optind)
181 { /* no arg */
182 place = EMSG;
183 if (*optstring == ':')
184 return BADARG;
185 if (opterr)
186 fprintf(stderr,
187 "%s: option requires an argument -- %c\n",
188 argv[0], optopt);
189 return BADCH;
191 else
192 /* white space */
193 optarg = argv[optind];
194 place = EMSG;
195 ++optind;
197 return optopt;