1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
|
/*
* Portions Copyright (C) 1999-2001 Internet Software Consortium.
*
* 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 INTERNET SOFTWARE CONSORTIUM
* DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL
* INTERNET SOFTWARE CONSORTIUM 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.
*/
/*
* 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.
*/
/* $ISC: commandline.c,v 1.15 2001/07/16 03:52:06 mayer Exp $ */
/*
* This file was adapted from the NetBSD project's source tree, RCS ID:
* NetBSD: getopt.c,v 1.15 1999/09/20 04:39:37 lukem Exp
*
* The primary change has been to rename items to the ISC namespace
* and format in the ISC coding style.
*/
/*
* Principal Authors: Computer Systems Research Group at UC Berkeley
* Principal ISC caretaker: DCL
*/
#include <config.h>
#include <stdio.h>
#include <isc/commandline.h>
#include <isc/msgs.h>
#include <isc/string.h>
#include <isc/util.h>
/* Index into parent argv vector. */
LIBISC_EXTERNAL_DATA int isc_commandline_index = 1;
/* Character checked for validity. */
LIBISC_EXTERNAL_DATA int isc_commandline_option;
/* Argument associated with option. */
LIBISC_EXTERNAL_DATA char *isc_commandline_argument;
/* For printing error messages. */
LIBISC_EXTERNAL_DATA char *isc_commandline_progname;
/* Print error messages. */
LIBISC_EXTERNAL_DATA isc_boolean_t isc_commandline_errprint = ISC_TRUE;
/* Reset processing. */
LIBISC_EXTERNAL_DATA isc_boolean_t isc_commandline_reset = ISC_TRUE;
static char endopt = '\0';
#define BADOPT '?'
#define BADARG ':'
#define ENDOPT &endopt
/*
* getopt --
* Parse argc/argv argument vector.
*/
int
isc_commandline_parse(int argc, char * const *argv, const char *options) {
static char *place = ENDOPT;
char *option; /* Index into *options of option. */
REQUIRE(argc >= 0 && argv != NULL && options != NULL);
/*
* Update scanning pointer, either because a reset was requested or
* the previous argv was finished.
*/
if (isc_commandline_reset || *place == '\0') {
isc_commandline_reset = ISC_FALSE;
if (isc_commandline_progname == NULL)
isc_commandline_progname = argv[0];
if (isc_commandline_index >= argc ||
*(place = argv[isc_commandline_index]) != '-') {
/*
* Index out of range or points to non-option.
*/
place = ENDOPT;
return (-1);
}
if (place[1] != '\0' && *++place == '-' && place[1] == '\0') {
/*
* Found '--' to signal end of options. Advance
* index to next argv, the first non-option.
*/
isc_commandline_index++;
place = ENDOPT;
return (-1);
}
}
isc_commandline_option = *place++;
option = strchr(options, isc_commandline_option);
/*
* Ensure valid option has been passed as specified by options string.
* '-:' is never a valid command line option because it could not
* distinguish ':' from the argument specifier in the options string.
*/
if (isc_commandline_option == ':' || option == NULL) {
if (*place == '\0')
isc_commandline_index++;
if (isc_commandline_errprint && *options != ':')
fprintf(stderr, "%s: %s -- %c\n",
isc_commandline_progname,
isc_msgcat_get(isc_msgcat,
ISC_MSGSET_COMMANDLINE,
ISC_MSG_ILLEGALOPT,
"illegal option"),
isc_commandline_option);
return (BADOPT);
}
if (*++option != ':') {
/*
* Option does not take an argument.
*/
isc_commandline_argument = NULL;
/*
* Skip to next argv if at the end of the current argv.
*/
if (*place == '\0')
++isc_commandline_index;
} else {
/*
* Option needs an argument.
*/
if (*place != '\0')
/*
* Option is in this argv, -D1 style.
*/
isc_commandline_argument = place;
else if (argc > ++isc_commandline_index)
/*
* Option is next argv, -D 1 style.
*/
isc_commandline_argument = argv[isc_commandline_index];
else {
/*
* Argument needed, but no more argv.
*/
place = ENDOPT;
/*
* Silent failure with "missing argument" return
* when ':' starts options string, per historical spec.
*/
if (*options == ':')
return (BADARG);
if (isc_commandline_errprint)
fprintf(stderr, "%s: %s -- %c\n",
isc_commandline_progname,
isc_msgcat_get(isc_msgcat,
ISC_MSGSET_COMMANDLINE,
ISC_MSG_OPTNEEDARG,
"option requires "
"an argument"),
isc_commandline_option);
return (BADOPT);
}
place = ENDOPT;
/*
* Point to argv that follows argument.
*/
isc_commandline_index++;
}
return (isc_commandline_option);
}
|
