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
224
225
226
| | #include <assert.h>
#include <string.h>
#include <stdio.h>
#include "error_util.h"
#include "command-line-arguments.h"
/*
Search the array of keywords for a given argument, assigning the
output variable to the corresponding value. Return FALSE if nothing
matches.
*/
static notmuch_bool_t
_process_keyword_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
const notmuch_keyword_t *keywords = arg_desc->keywords;
if (next == '\0') {
/* No keyword given */
arg_str = "";
}
while (keywords->name) {
if (strcmp (arg_str, keywords->name) == 0) {
if (arg_desc->output_var) {
if (arg_desc->opt_type == NOTMUCH_OPT_KEYWORD_FLAGS)
*((int *)arg_desc->output_var) |= keywords->value;
else
*((int *)arg_desc->output_var) = keywords->value;
}
return TRUE;
}
keywords++;
}
if (next != '\0')
fprintf (stderr, "Unknown keyword argument \"%s\" for option \"%s\".\n", arg_str, arg_desc->name);
else
fprintf (stderr, "Option \"%s\" needs a keyword argument.\n", arg_desc->name);
return FALSE;
}
static notmuch_bool_t
_process_boolean_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
if (next == '\0') {
*((notmuch_bool_t *)arg_desc->output_var) = TRUE;
return TRUE;
}
if (strcmp (arg_str, "false") == 0) {
*((notmuch_bool_t *)arg_desc->output_var) = FALSE;
return TRUE;
}
if (strcmp (arg_str, "true") == 0) {
*((notmuch_bool_t *)arg_desc->output_var) = TRUE;
return TRUE;
}
fprintf (stderr, "Unknown argument \"%s\" for (boolean) option \"%s\".\n", arg_str, arg_desc->name);
return FALSE;
}
static notmuch_bool_t
_process_int_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
char *endptr;
if (next == '\0' || arg_str[0] == '\0') {
fprintf (stderr, "Option \"%s\" needs an integer argument.\n", arg_desc->name);
return FALSE;
}
*((int *)arg_desc->output_var) = strtol (arg_str, &endptr, 10);
if (*endptr == '\0')
return TRUE;
fprintf (stderr, "Unable to parse argument \"%s\" for option \"%s\" as an integer.\n",
arg_str, arg_desc->name);
return FALSE;
}
static notmuch_bool_t
_process_string_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
if (next == '\0') {
fprintf (stderr, "Option \"%s\" needs a string argument.\n", arg_desc->name);
return FALSE;
}
if (arg_str[0] == '\0') {
fprintf (stderr, "String argument for option \"%s\" must be non-empty.\n", arg_desc->name);
return FALSE;
}
*((const char **)arg_desc->output_var) = arg_str;
return TRUE;
}
/*
Search for the {pos_arg_index}th position argument, return FALSE if
that does not exist.
*/
notmuch_bool_t
parse_position_arg (const char *arg_str, int pos_arg_index,
const notmuch_opt_desc_t *arg_desc) {
int pos_arg_counter = 0;
while (arg_desc->opt_type != NOTMUCH_OPT_END){
if (arg_desc->opt_type == NOTMUCH_OPT_POSITION) {
if (pos_arg_counter == pos_arg_index) {
if (arg_desc->output_var) {
*((const char **)arg_desc->output_var) = arg_str;
}
return TRUE;
}
pos_arg_counter++;
}
arg_desc++;
}
return FALSE;
}
/*
* Search for a non-positional (i.e. starting with --) argument matching arg,
* parse a possible value, and assign to *output_var
*/
int
parse_option (int argc, char **argv, const notmuch_opt_desc_t *options, int opt_index)
{
assert(argv);
const char *_arg = argv[opt_index];
assert(_arg);
assert(options);
const char *arg = _arg + 2; /* _arg starts with -- */
const notmuch_opt_desc_t *try;
for (try = options; try->opt_type != NOTMUCH_OPT_END; try++) {
if (try->opt_type == NOTMUCH_OPT_INHERIT) {
int new_index = parse_option (argc, argv, try->output_var, opt_index);
if (new_index >= 0)
return new_index;
}
if (! try->name)
continue;
if (strncmp (arg, try->name, strlen (try->name)) != 0)
continue;
char next = arg[strlen (try->name)];
const char *value = arg + strlen(try->name) + 1;
/*
* If we have not reached the end of the argument (i.e. the
* next character is not a space or delimiter) then the
* argument could still match a longer option name later in
* the option table.
*/
if (next != '=' && next != ':' && next != '\0')
continue;
if (try->output_var == NULL)
INTERNAL_ERROR ("output pointer NULL for option %s", try->name);
notmuch_bool_t opt_status = FALSE;
switch (try->opt_type) {
case NOTMUCH_OPT_KEYWORD:
case NOTMUCH_OPT_KEYWORD_FLAGS:
opt_status = _process_keyword_arg (try, next, value);
break;
case NOTMUCH_OPT_BOOLEAN:
opt_status = _process_boolean_arg (try, next, value);
break;
case NOTMUCH_OPT_INT:
opt_status = _process_int_arg (try, next, value);
break;
case NOTMUCH_OPT_STRING:
opt_status = _process_string_arg (try, next, value);
break;
case NOTMUCH_OPT_POSITION:
case NOTMUCH_OPT_END:
default:
INTERNAL_ERROR ("unknown or unhandled option type %d", try->opt_type);
/*UNREACHED*/
}
if (opt_status)
return opt_index+1;
else
return -1;
}
return -1;
}
/* See command-line-arguments.h for description */
int
parse_arguments (int argc, char **argv,
const notmuch_opt_desc_t *options, int opt_index) {
int pos_arg_index = 0;
notmuch_bool_t more_args = TRUE;
while (more_args && opt_index < argc) {
if (strncmp (argv[opt_index],"--",2) != 0) {
more_args = parse_position_arg (argv[opt_index], pos_arg_index, options);
if (more_args) {
pos_arg_index++;
opt_index++;
}
} else {
int prev_opt_index = opt_index;
if (strlen (argv[opt_index]) == 2)
return opt_index+1;
opt_index = parse_option (argc, argv, options, opt_index);
if (opt_index < 0) {
fprintf (stderr, "Unrecognized option: %s\n", argv[prev_opt_index]);
more_args = FALSE;
}
}
}
return opt_index;
}
|