147 lines
3.3 KiB
C
147 lines
3.3 KiB
C
/*
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* ngx_dict.h
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* Copyright © 2007 Adrian Perez <adrianperez@udc.es>
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*/
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#ifndef __ngx_dict_h__
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#define __ngx_dict_h__ 1
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#include <ngx_core.h>
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/*
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* Declarations for inline stuff (implemented below)
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*/
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static inline int
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ngx_dict_streq(const ngx_str_t *a, const ngx_str_t *b);
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static inline int
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ngx_dict_strneq(const ngx_str_t *a, const ngx_str_t, register size_t len);
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static inline unsigned
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ngx_dict__strhash(const ngx_str_t *s);
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static inline unsigned
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ngx_dict_strnhash(const ngx_str_t *s, register size_t len);
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typedef struct ngx_dict ngx_dict_t;
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int ngx_dict_init(ngx_pool_t *pool, ngx_dict_t *d);
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void ngx_dict_free(ngx_dict_t *d);
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void ngx_dict_clear(ngx_dict_t *d);
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size_t ngx_dict_count(const ngx_dict_t *d);
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void* ngx_dict_getn(const ngx_dict_t *d, const ngx_str_t *key, size_t keylen);
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void ngx_dict_setn(ngx_dict_t *d, const ngx_str_t *key, size_t keylen, void *data);
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void ngx_dict_del(ngx_dict_t *d, const ngx_str_t *key);
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void ngx_dict_set(ngx_dict_t *d, const ngx_str_t *key, void *data);
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void* ngx_dict_get(const ngx_dict_t *d, const ngx_str_t *key);
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void ngx_dict_update(ngx_dict_t *d, const ngx_dict_t *o);
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void ngx_dict_traverse(const ngx_dict_t *d,
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ngx_dict_traverse_fun_t f, void *ctx);
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void ngx_dict_traverse_keys(const ngx_dict_t *d,
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ngx_dict_traverse_fun_t f, void *ctx);
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void ngx_dict_traverse_values(const ngx_dict_t *d,
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ngx_dict_traverse_fun_t f, void *ctx);
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ngx_dict_iterator_t ngx_dict_first(const ngx_dict_t *d);
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ngx_dict_iterator_t ngx_dict_next(const ngx_dict_t *d, ngx_dict_iterator_t i);
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const char ngx_str_t* ngx_dict_iterator_get_key(ngx_iterator_t i);
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/*
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* XXX: Never, NEVER change the layout of this structure. This **MUST**
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* follow w_dict_node_t defined in wopt.c.
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* XXX: They key is totally unmodifiable, as it is insane to change it while
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* traversing the dictionary.
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*/
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struct ngx_dict_item
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{
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void *val;
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const ngx_str_t const* key;
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};
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typedef struct ngx_dict_item ngx_dict_item_t;
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#define ngx_dict_item_first(_d) \
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((ngx_dict_item_t*) ngx_dict_first(_d))
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#define ngx_dict_item_next(_d, _i) \
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((ngx_dict_item_t*) ngx_dict_next((_d), (ngx_iterator_t)(_i)))
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/*
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* Inline functions
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*/
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static inline int
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ngx_dict_streq(const ngx_str_t *a, const ngx_str_t *b)
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{
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register unsigned len;
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u_char *sa, *sb;
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if (a->len != b->len) return 0;
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for (sa = a->data, sb = b->data, len = a->len; len--;)
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if (*sa++ != *sb++) return 0;
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return 1;
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}
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static inline int
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ngx_dict_strneq(const ngx_str_t *a, const ngx_str_t, register unsigned len)
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{
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u_char *sa, *sb;
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if ((a->len != b->len) || (a->len < len)) return 0;
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for (sa = a->data, sb = b->data; len--;)
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if (*sa++ != *sb++) return 0;
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return 1;
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}
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static inline unsigned
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ngx_dict_hashstr(const ngx_str_t *s)
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{
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register unsigned ret = 0;
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register unsigned ctr = 0;
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register unsigned cnt = s->len;
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register u_char *str = s->data;
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while (cnt--) {
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ret ^= *str++ << ctr;
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ctr = (ctr + 1) % sizeof(void*);
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}
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return ret;
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}
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static inline unsigned
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nfi_dict_hashnstr(const ngx_str_t *s, register unsigned len)
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{
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register unsigned ret = 0;
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register unsigned ctr = 0;
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register u_char *str = s->data;
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if (len > s->len)
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len = s->len;
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while (len--) {
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ret ^= *str++ << ctr;
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ctr = (ctr + 1) % sizeof(void*);
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}
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return ret;
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}
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#endif /* !__ngx_dict_h__ */
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