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/*
* Copyright (C) Igor Sysoev
*/
#include <ngx_config.h>
#include <ngx_core.h>
static void * ngx_libc_cdecl ngx_regex_malloc(size_t size);
static void ngx_libc_cdecl ngx_regex_free(void *p);
static ngx_pool_t *ngx_pcre_pool;
void
ngx_regex_init(void)
{
pcre_malloc = ngx_regex_malloc;
pcre_free = ngx_regex_free;
}
ngx_regex_t *
ngx_regex_compile(ngx_str_t *pattern, ngx_int_t options, ngx_pool_t *pool,
ngx_str_t *err)
{
int erroff;
const char *errstr;
ngx_regex_t *re;
#if (NGX_THREADS)
ngx_core_tls_t *tls;
#if (NGX_SUPPRESS_WARN)
tls = NULL;
#endif
if (ngx_threaded) {
tls = ngx_thread_get_tls(ngx_core_tls_key);
tls->pool = pool;
} else {
ngx_pcre_pool = pool;
}
#else
ngx_pcre_pool = pool;
#endif
re = pcre_compile((const char *) pattern->data, (int) options,
&errstr, &erroff, NULL);
if (re == NULL) {
if ((size_t) erroff == pattern->len) {
ngx_snprintf(err->data, err->len - 1,
"pcre_compile() failed: %s in \"%s\"%Z",
errstr, pattern->data);
} else {
ngx_snprintf(err->data, err->len - 1,
"pcre_compile() failed: %s in \"%s\" at \"%s\"%Z",
errstr, pattern->data, pattern->data + erroff);
}
}
/* ensure that there is no current pool */
#if (NGX_THREADS)
if (ngx_threaded) {
tls->pool = NULL;
} else {
ngx_pcre_pool = NULL;
}
#else
ngx_pcre_pool = NULL;
#endif
return re;
}
ngx_int_t
ngx_regex_capture_count(ngx_regex_t *re)
{
int rc, n;
n = 0;
rc = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &n);
if (rc < 0) {
return (ngx_int_t) rc;
}
return (ngx_int_t) n;
}
ngx_int_t
ngx_regex_exec(ngx_regex_t *re, ngx_str_t *s, int *captures, ngx_int_t size)
{
int rc;
rc = pcre_exec(re, NULL, (const char *) s->data, s->len, 0, 0,
captures, size);
if (rc == -1) {
return NGX_REGEX_NO_MATCHED;
}
return rc;
}
static void * ngx_libc_cdecl
ngx_regex_malloc(size_t size)
{
ngx_pool_t *pool;
#if (NGX_THREADS)
ngx_core_tls_t *tls;
if (ngx_threaded) {
tls = ngx_thread_get_tls(ngx_core_tls_key);
pool = tls->pool;
} else {
pool = ngx_pcre_pool;
}
#else
pool = ngx_pcre_pool;
#endif
if (pool) {
return ngx_palloc(pool, size);
}
return NULL;
}
static void ngx_libc_cdecl
ngx_regex_free(void *p)
{
return;
}
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