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/*
* Copyright (C) Igor Sysoev
* Copyright (C) NGINX, Inc.
*/
#ifndef _NJS_REGEX_H_INCLUDED_
#define _NJS_REGEX_H_INCLUDED_
#define NJS_REGEX_UNSET (size_t) (-1)
typedef enum {
NJS_REGEX_INVALID_FLAG = -1,
NJS_REGEX_NO_FLAGS = 0,
NJS_REGEX_GLOBAL = 1,
NJS_REGEX_IGNORE_CASE = 2,
NJS_REGEX_MULTILINE = 4,
NJS_REGEX_STICKY = 8,
NJS_REGEX_UTF8 = 16,
} njs_regex_flags_t;
typedef void *(*njs_pcre_malloc_t)(size_t size, void *memory_data);
typedef void (*njs_pcre_free_t)(void *p, void *memory_data);
typedef struct {
void *code;
void *extra;
int ncaptures;
int backrefmax;
int nentries;
int entry_size;
char *entries;
} njs_regex_t;
#ifdef NJS_HAVE_PCRE2
#define njs_regex_generic_ctx_t void
#define njs_regex_compile_ctx_t void
#define njs_regex_match_data_t void
#else
typedef struct {
njs_pcre_malloc_t private_malloc;
njs_pcre_free_t private_free;
void *memory_data;
} njs_regex_generic_ctx_t;
#define njs_regex_compile_ctx_t void
typedef struct {
int ncaptures;
/*
* Each capture is stored in 3 "int" vector elements.
* The N capture positions are stored in [n * 2] and [n * 2 + 1] elements.
* The 3rd bookkeeping elements are at the end of the vector.
* The first vector is for the "$0" capture and it is always allocated.
*/
int captures[3];
} njs_regex_match_data_t;
#endif
NJS_EXPORT njs_regex_generic_ctx_t *
njs_regex_generic_ctx_create(njs_pcre_malloc_t private_malloc,
njs_pcre_free_t private_free, void *memory_data);
NJS_EXPORT njs_regex_compile_ctx_t *njs_regex_compile_ctx_create(
njs_regex_generic_ctx_t *ctx);
NJS_EXPORT njs_int_t njs_regex_escape(njs_mp_t *mp, njs_str_t *text);
NJS_EXPORT njs_int_t njs_regex_compile(njs_regex_t *regex, u_char *source,
size_t len, njs_regex_flags_t flags, njs_regex_compile_ctx_t *ctx,
njs_trace_t *trace);
NJS_EXPORT njs_bool_t njs_regex_is_valid(njs_regex_t *regex);
NJS_EXPORT njs_int_t njs_regex_named_captures(njs_regex_t *regex,
njs_str_t *name, int n);
NJS_EXPORT njs_regex_match_data_t *njs_regex_match_data(njs_regex_t *regex,
njs_regex_generic_ctx_t *ctx);
NJS_EXPORT void njs_regex_match_data_free(njs_regex_match_data_t *match_data,
njs_regex_generic_ctx_t *ctx);
NJS_EXPORT njs_int_t njs_regex_match(njs_regex_t *regex, const u_char *subject,
size_t off, size_t len, njs_regex_match_data_t *match_data,
njs_trace_t *trace);
NJS_EXPORT size_t njs_regex_capture(njs_regex_match_data_t *match_data,
njs_uint_t n);
#endif /* _NJS_REGEX_H_INCLUDED_ */
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