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
|
/* $OpenBSD: egetopt.c,v 1.2 1996/06/26 05:37:52 deraadt Exp $ */
/*-
* Copyright (c) 1991 Keith Muller.
* Copyright (c) 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Keith Muller of the University of California, San Diego.
*
* 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.
*/
#ifndef lint
/* from: static char sccsid[] = "@(#)egetopt.c 8.1 (Berkeley) 6/6/93"; */
static char *rcsid = "$OpenBSD: egetopt.c,v 1.2 1996/06/26 05:37:52 deraadt Exp $";
#endif /* not lint */
#include <ctype.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "extern.h"
/*
* egetopt: get option letter from argument vector (an extended
* version of getopt).
*
* Non standard additions to the ostr specs are:
* 1) '?': immediate value following arg is optional (no white space
* between the arg and the value)
* 2) '#': +/- followed by a number (with an optional sign but
* no white space between the arg and the number). The - may be
* combined with other options, but the + cannot.
*/
int eopterr = 1; /* if error message should be printed */
int eoptind = 1; /* index into parent argv vector */
int eoptopt; /* character checked for validity */
char *eoptarg; /* argument associated with option */
#define BADCH (int)'?'
#define EMSG ""
int
egetopt(nargc, nargv, ostr)
int nargc;
char * const *nargv;
const char *ostr;
{
static char *place = EMSG; /* option letter processing */
register char *oli; /* option letter list index */
static int delim; /* which option delimeter */
register char *p;
static char savec = '\0';
if (savec != '\0') {
*place = savec;
savec = '\0';
}
if (!*place) {
/*
* update scanning pointer
*/
if ((eoptind >= nargc) ||
((*(place = nargv[eoptind]) != '-') && (*place != '+'))) {
place = EMSG;
return (EOF);
}
delim = (int)*place;
if (place[1] && *++place == '-' && !place[1]) {
/*
* found "--"
*/
++eoptind;
place = EMSG;
return (EOF);
}
}
/*
* check option letter
*/
if ((eoptopt = (int)*place++) == (int)':' || (eoptopt == (int)'?') ||
!(oli = strchr(ostr, eoptopt))) {
/*
* if the user didn't specify '-' as an option,
* assume it means EOF when by itself.
*/
if ((eoptopt == (int)'-') && !*place)
return (EOF);
if (strchr(ostr, '#') && (isdigit(eoptopt) ||
(((eoptopt == (int)'-') || (eoptopt == (int)'+')) &&
isdigit(*place)))) {
/*
* # option: +/- with a number is ok
*/
for (p = place; *p != '\0'; ++p) {
if (!isdigit(*p))
break;
}
eoptarg = place-1;
if (*p == '\0') {
place = EMSG;
++eoptind;
} else {
place = p;
savec = *p;
*place = '\0';
}
return (delim);
}
if (!*place)
++eoptind;
if (eopterr) {
if (!(p = strrchr(*nargv, '/')))
p = *nargv;
else
++p;
(void)fprintf(stderr, "%s: illegal option -- %c\n",
p, eoptopt);
}
return (BADCH);
}
if (delim == (int)'+') {
/*
* '+' is only allowed with numbers
*/
if (!*place)
++eoptind;
if (eopterr) {
if (!(p = strrchr(*nargv, '/')))
p = *nargv;
else
++p;
(void)fprintf(stderr,
"%s: illegal '+' delimiter with option -- %c\n",
p, eoptopt);
}
return (BADCH);
}
++oli;
if ((*oli != ':') && (*oli != '?')) {
/*
* don't need argument
*/
eoptarg = NULL;
if (!*place)
++eoptind;
return (eoptopt);
}
if (*place) {
/*
* no white space
*/
eoptarg = place;
} else if (*oli == '?') {
/*
* no arg, but NOT required
*/
eoptarg = NULL;
} else if (nargc <= ++eoptind) {
/*
* no arg, but IS required
*/
place = EMSG;
if (eopterr) {
if (!(p = strrchr(*nargv, '/')))
p = *nargv;
else
++p;
(void)fprintf(stderr,
"%s: option requires an argument -- %c\n", p,
eoptopt);
}
return (BADCH);
} else {
/*
* arg has white space
*/
eoptarg = nargv[eoptind];
}
place = EMSG;
++eoptind;
return (eoptopt);
}
|
