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
|
/*
* Copyright (C) NGINX, Inc.
*/
#include <nxt_main.h>
typedef enum {
NXT_TSTR_CONST = 0,
NXT_TSTR_VAR,
} nxt_tstr_type_t;
struct nxt_tstr_s {
nxt_str_t str;
nxt_var_t *var;
nxt_tstr_flags_t flags;
nxt_tstr_type_t type;
};
struct nxt_tstr_query_s {
nxt_mp_t *pool;
nxt_tstr_state_t *state;
nxt_var_cache_t *cache;
nxt_uint_t waiting;
nxt_uint_t failed; /* 1 bit */
void *ctx;
void *data;
nxt_work_handler_t ready;
nxt_work_handler_t error;
};
nxt_tstr_state_t *
nxt_tstr_state_new(nxt_mp_t *mp)
{
nxt_tstr_state_t *state;
state = nxt_mp_get(mp, sizeof(nxt_tstr_state_t));
if (nxt_slow_path(state == NULL)) {
return NULL;
}
state->pool = mp;
state->var_fields = nxt_array_create(mp, 4, sizeof(nxt_var_field_t));
if (nxt_slow_path(state->var_fields == NULL)) {
return NULL;
}
return state;
}
nxt_tstr_t *
nxt_tstr_compile(nxt_tstr_state_t *state, nxt_str_t *str,
nxt_tstr_flags_t flags)
{
u_char *p;
nxt_tstr_t *tstr;
nxt_bool_t strz;
strz = (flags & NXT_TSTR_STRZ) != 0;
tstr = nxt_mp_get(state->pool, sizeof(nxt_tstr_t));
if (nxt_slow_path(tstr == NULL)) {
return NULL;
}
tstr->str.length = str->length + strz;
tstr->str.start = nxt_mp_nget(state->pool, tstr->str.length);
if (nxt_slow_path(tstr->str.start == NULL)) {
return NULL;
}
p = nxt_cpymem(tstr->str.start, str->start, str->length);
if (strz) {
*p = '\0';
}
tstr->flags = flags;
p = nxt_memchr(str->start, '$', str->length);
if (p != NULL) {
tstr->type = NXT_TSTR_VAR;
tstr->var = nxt_var_compile(&tstr->str, state->pool, state->var_fields);
if (nxt_slow_path(tstr->var == NULL)) {
return NULL;
}
} else {
tstr->type = NXT_TSTR_CONST;
}
return tstr;
}
nxt_int_t
nxt_tstr_test(nxt_tstr_state_t *state, nxt_str_t *str, u_char *error)
{
return nxt_var_test(str, state->var_fields, error);
}
nxt_bool_t
nxt_tstr_is_const(nxt_tstr_t *tstr)
{
return (tstr->type == NXT_TSTR_CONST);
}
void
nxt_tstr_str(nxt_tstr_t *tstr, nxt_str_t *str)
{
*str = tstr->str;
if (tstr->flags & NXT_TSTR_STRZ) {
str->length--;
}
}
nxt_int_t
nxt_tstr_query_init(nxt_tstr_query_t **query_p, nxt_tstr_state_t *state,
nxt_var_cache_t *cache, void *ctx, nxt_mp_t *mp)
{
nxt_tstr_query_t *query;
query = *query_p;
if (*query_p == NULL) {
query = nxt_mp_zget(mp, sizeof(nxt_tstr_query_t));
if (nxt_slow_path(query == NULL)) {
return NXT_ERROR;
}
}
query->pool = mp;
query->state = state;
query->cache = cache;
query->ctx = ctx;
*query_p = query;
return NXT_OK;
}
void
nxt_tstr_query(nxt_task_t *task, nxt_tstr_query_t *query, nxt_tstr_t *tstr,
nxt_str_t *val)
{
nxt_int_t ret;
if (nxt_tstr_is_const(tstr)) {
nxt_tstr_str(tstr, val);
return;
}
if (nxt_slow_path(query->failed)) {
return;
}
ret = nxt_var_interpreter(task, query->cache, tstr->var, val, query->ctx,
tstr->flags & NXT_TSTR_LOGGING);
if (nxt_slow_path(ret != NXT_OK)) {
query->failed = 1;
return;
}
if (tstr->flags & NXT_TSTR_STRZ) {
val->length--;
}
#if (NXT_DEBUG)
nxt_str_t str;
nxt_tstr_str(tstr, &str);
nxt_debug(task, "tstr: \"%V\" -> \"%V\"", &str, val);
#endif
}
void
nxt_tstr_query_resolve(nxt_task_t *task, nxt_tstr_query_t *query, void *data,
nxt_work_handler_t ready, nxt_work_handler_t error)
{
query->data = data;
query->ready = ready;
query->error = error;
if (query->waiting == 0) {
nxt_work_queue_add(&task->thread->engine->fast_work_queue,
query->failed ? query->error : query->ready,
task, query->ctx, query->data);
}
}
void
nxt_tstr_query_handle(nxt_task_t *task, nxt_tstr_query_t *query,
nxt_bool_t failed)
{
query->failed |= failed;
if (--query->waiting == 0) {
nxt_work_queue_add(&task->thread->engine->fast_work_queue,
query->failed ? query->error : query->ready,
task, query->ctx, query->data);
}
}
|
