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
219
220
221
222
223
|
/* $OpenBSD: arguments.c,v 1.2 2011/01/30 12:09:30 nicm Exp $ */
/*
* Copyright (c) 2010 Nicholas Marriott <nicm@users.sourceforge.net>
*
* 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 MIND, 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.
*/
#include <sys/types.h>
#include <bitstring.h>
#include <stdlib.h>
#include <string.h>
#include "tmux.h"
/* Create an arguments set with no flags. */
struct args *
args_create(int argc, ...)
{
struct args *args;
va_list ap;
int i;
args = xcalloc(1, sizeof *args);
if ((args->flags = bit_alloc(SCHAR_MAX)) == NULL)
fatal("bit_alloc failed");
args->argc = argc;
if (argc == 0)
args->argv = NULL;
else
args->argv = xcalloc(argc, sizeof **args->argv);
va_start(ap, argc);
for (i = 0; i < argc; i++)
args->argv[i] = xstrdup(va_arg(ap, char *));
va_end(ap);
return (args);
}
/* Parse an argv and argc into a new argument set. */
struct args *
args_parse(const char *template, int argc, char **argv)
{
struct args *args;
char *ptr;
int opt;
args = xcalloc(1, sizeof *args);
if ((args->flags = bit_alloc(SCHAR_MAX)) == NULL)
fatal("bit_alloc failed");
optreset = 1;
optind = 1;
while ((opt = getopt(argc, argv, template)) != -1) {
if (opt < 0 || opt >= SCHAR_MAX)
continue;
if (opt == '?' || (ptr = strchr(template, opt)) == NULL) {
xfree(args->flags);
xfree(args);
return (NULL);
}
bit_set(args->flags, opt);
if (ptr[1] == ':') {
if (args->values[opt] != NULL)
xfree(args->values[opt]);
args->values[opt] = xstrdup(optarg);
}
}
argc -= optind;
argv += optind;
args->argc = argc;
args->argv = cmd_copy_argv(argc, argv);
return (args);
}
/* Free an arguments set. */
void
args_free(struct args *args)
{
u_int i;
cmd_free_argv(args->argc, args->argv);
for (i = 0; i < SCHAR_MAX; i++) {
if (args->values[i] != NULL)
xfree(args->values[i]);
}
xfree(args->flags);
xfree(args);
}
/* Print a set of arguments. */
size_t
args_print(struct args *args, char *buf, size_t len)
{
size_t off;
int i;
const char *quotes;
/* There must be at least one byte at the start. */
if (len == 0)
return (0);
off = 0;
/* Process the flags first. */
buf[off++] = '-';
for (i = 0; i < SCHAR_MAX; i++) {
if (!bit_test(args->flags, i) || args->values[i] != NULL)
continue;
if (off == len - 1) {
buf[off] = '\0';
return (len);
}
buf[off++] = i;
buf[off] = '\0';
}
if (off == 1)
buf[--off] = '\0';
/* Then the flags with arguments. */
for (i = 0; i < SCHAR_MAX; i++) {
if (!bit_test(args->flags, i) || args->values[i] == NULL)
continue;
if (off >= len) {
/* snprintf will have zero terminated. */
return (len);
}
if (strchr(args->values[i], ' ') != NULL)
quotes = "\"";
else
quotes = "";
off += xsnprintf(buf + off, len - off, "%s-%c %s%s%s",
off != 0 ? " " : "", i, quotes, args->values[i], quotes);
}
/* And finally the argument vector. */
for (i = 0; i < args->argc; i++) {
if (off >= len) {
/* snprintf will have zero terminated. */
return (len);
}
if (strchr(args->argv[i], ' ') != NULL)
quotes = "\"";
else
quotes = "";
off += xsnprintf(buf + off, len - off, "%s%s%s%s",
off != 0 ? " " : "", quotes, args->argv[i], quotes);
}
return (off);
}
/* Return if an argument is present. */
int
args_has(struct args *args, u_char ch)
{
return (bit_test(args->flags, ch));
}
/* Set argument value. */
void
args_set(struct args *args, u_char ch, const char *value)
{
if (args->values[ch] != NULL)
xfree(args->values[ch]);
if (value != NULL)
args->values[ch] = xstrdup(value);
else
args->values[ch] = NULL;
bit_set(args->flags, ch);
}
/* Get argument value. Will be NULL if it isn't present. */
const char *
args_get(struct args *args, u_char ch)
{
return (args->values[ch]);
}
/* Convert an argument value to a number. */
long long
args_strtonum(struct args *args,
u_char ch, long long minval, long long maxval, char **cause)
{
const char *errstr;
long long ll;
if (!args_has(args, ch)) {
*cause = xstrdup("missing");
return (0);
}
ll = strtonum(args->values[ch], minval, maxval, &errstr);
if (errstr != NULL) {
*cause = xstrdup(errstr);
return (0);
}
*cause = NULL;
return (ll);
}
|
