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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;
}
static ngx_inline void
ngx_regex_malloc_init(ngx_pool_t *pool)
{
#if (NGX_THREADS)
ngx_core_tls_t *tls;
if (ngx_threaded) {
tls = ngx_thread_get_tls(ngx_core_tls_key);
tls->pool = pool;
return;
}
#endif
ngx_pcre_pool = pool;
}
static ngx_inline void
ngx_regex_malloc_done(void)
{
#if (NGX_THREADS)
ngx_core_tls_t *tls;
if (ngx_threaded) {
tls = ngx_thread_get_tls(ngx_core_tls_key);
tls->pool = NULL;
return;
}
#endif
ngx_pcre_pool = NULL;
}
ngx_int_t
ngx_regex_compile(ngx_regex_compile_t *rc)
{
int n, erroff;
char *p;
const char *errstr;
ngx_regex_t *re;
ngx_regex_malloc_init(rc->pool);
re = pcre_compile((const char *) rc->pattern.data, (int) rc->options,
&errstr, &erroff, NULL);
/* ensure that there is no current pool */
ngx_regex_malloc_done();
if (re == NULL) {
if ((size_t) erroff == rc->pattern.len) {
rc->err.len = ngx_snprintf(rc->err.data, rc->err.len,
"pcre_compile() failed: %s in \"%V\"",
errstr, &rc->pattern)
- rc->err.data;
} else {
rc->err.len = ngx_snprintf(rc->err.data, rc->err.len,
"pcre_compile() failed: %s in \"%V\" at \"%s\"",
errstr, &rc->pattern, rc->pattern.data + erroff)
- rc->err.data;
}
return NGX_ERROR;
}
rc->regex = re;
n = pcre_fullinfo(re, NULL, PCRE_INFO_CAPTURECOUNT, &rc->captures);
if (n < 0) {
p = "pcre_fullinfo(\"%V\", PCRE_INFO_CAPTURECOUNT) failed: %d";
goto failed;
}
if (rc->captures == 0) {
return NGX_OK;
}
n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMECOUNT, &rc->named_captures);
if (n < 0) {
p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMECOUNT) failed: %d";
goto failed;
}
if (rc->named_captures == 0) {
return NGX_OK;
}
n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMEENTRYSIZE, &rc->name_size);
if (n < 0) {
p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMEENTRYSIZE) failed: %d";
goto failed;
}
n = pcre_fullinfo(re, NULL, PCRE_INFO_NAMETABLE, &rc->names);
if (n < 0) {
p = "pcre_fullinfo(\"%V\", PCRE_INFO_NAMETABLE) failed: %d";
goto failed;
}
return NGX_OK;
failed:
rc->err.len = ngx_snprintf(rc->err.data, rc->err.len, p, &rc->pattern, n)
- rc->err.data;
return NGX_OK;
}
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_array(ngx_array_t *a, ngx_str_t *s, ngx_log_t *log)
{
ngx_int_t n;
ngx_uint_t i;
ngx_regex_elt_t *re;
re = a->elts;
for (i = 0; i < a->nelts; i++) {
n = ngx_regex_exec(re[i].regex, s, NULL, 0);
if (n == NGX_REGEX_NO_MATCHED) {
continue;
}
if (n < 0) {
ngx_log_error(NGX_LOG_ALERT, log, 0,
ngx_regex_exec_n " failed: %i on \"%V\" using \"%s\"",
n, s, re[i].name);
return NGX_ERROR;
}
/* match */
return NGX_OK;
}
return NGX_DECLINED;
}
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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