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annotate src/http/ngx_http_variables.h @ 2333:f267d23868fc

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variable value rbtree support
author Igor Sysoev <igor@sysoev.ru>
date Sat, 22 Nov 2008 20:42:01 +0000
parents f62751dab60d
children 42c16d8bddbe 2d21e02fc01d
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1
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2 /*
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3 * Copyright (C) Igor Sysoev
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4 */
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7 #ifndef _NGX_HTTP_VARIABLES_H_INCLUDED_
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8 #define _NGX_HTTP_VARIABLES_H_INCLUDED_
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11 #include <ngx_config.h>
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12 #include <ngx_core.h>
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13 #include <ngx_http.h>
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16 typedef ngx_variable_value_t ngx_http_variable_value_t;
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18 #define ngx_http_variable(v) { sizeof(v) - 1, 1, 0, 0, 0, (u_char *) v }
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20 typedef struct ngx_http_variable_s ngx_http_variable_t;
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22 typedef void (*ngx_http_set_variable_pt) (ngx_http_request_t *r,
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23 ngx_http_variable_value_t *v, uintptr_t data);
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24 typedef ngx_int_t (*ngx_http_get_variable_pt) (ngx_http_request_t *r,
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25 ngx_http_variable_value_t *v, uintptr_t data);
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28 #define NGX_HTTP_VAR_CHANGEABLE 1
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29 #define NGX_HTTP_VAR_NOCACHEABLE 2
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30 #define NGX_HTTP_VAR_INDEXED 4
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31 #define NGX_HTTP_VAR_NOHASH 8
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34 struct ngx_http_variable_s {
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35 ngx_str_t name; /* must be first to build the hash */
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36 ngx_http_set_variable_pt set_handler;
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37 ngx_http_get_variable_pt get_handler;
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38 uintptr_t data;
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39 ngx_uint_t flags;
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40 ngx_uint_t index;
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41 };
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44 ngx_http_variable_t *ngx_http_add_variable(ngx_conf_t *cf, ngx_str_t *name,
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45 ngx_uint_t flags);
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46 ngx_int_t ngx_http_get_variable_index(ngx_conf_t *cf, ngx_str_t *name);
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47 ngx_http_variable_value_t *ngx_http_get_indexed_variable(ngx_http_request_t *r,
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48 ngx_uint_t index);
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49 ngx_http_variable_value_t *ngx_http_get_flushed_variable(ngx_http_request_t *r,
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50 ngx_uint_t index);
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52 ngx_http_variable_value_t *ngx_http_get_variable(ngx_http_request_t *r,
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53 ngx_str_t *name, ngx_uint_t key, ngx_uint_t nowarn);
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55 ngx_int_t ngx_http_variable_unknown_header(ngx_http_variable_value_t *v,
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56 ngx_str_t *var, ngx_list_part_t *part, size_t prefix);
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59 #define ngx_http_clear_variable(r, index) r->variables0[index].text.data = NULL;
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62 ngx_int_t ngx_http_variables_add_core_vars(ngx_conf_t *cf);
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63 ngx_int_t ngx_http_variables_init_vars(ngx_conf_t *cf);
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66 typedef struct {
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67 ngx_rbtree_node_t node;
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68 size_t len;
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69 ngx_http_variable_value_t *value;
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70 } ngx_http_variable_value_node_t;
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71
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72
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73 void ngx_http_variable_value_rbtree_insert(ngx_rbtree_node_t *temp,
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74 ngx_rbtree_node_t *node, ngx_rbtree_node_t *sentinel);
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75 ngx_http_variable_value_t *ngx_http_variable_value_lookup(ngx_rbtree_t *rbtree,
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76 ngx_str_t *name, uint32_t hash);
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78
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79 extern ngx_http_variable_value_t ngx_http_variable_null_value;
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80 extern ngx_http_variable_value_t ngx_http_variable_true_value;
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83 #endif /* _NGX_HTTP_VARIABLES_H_INCLUDED_ */