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php_mbregex.c
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php_mbregex.c
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/*
+----------------------------------------------------------------------+
| PHP Version 7 |
+----------------------------------------------------------------------+
| Copyright (c) 1997-2016 The PHP Group |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Tsukada Takuya <tsukada@fminn.nagano.nagano.jp> |
+----------------------------------------------------------------------+
*/
/* $Id$ */
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#if HAVE_MBREGEX
#include "zend_smart_str.h"
#include "ext/standard/info.h"
#include "php_mbregex.h"
#include "mbstring.h"
#include "php_onig_compat.h" /* must come prior to the oniguruma header */
#include <oniguruma.h>
#undef UChar
ZEND_EXTERN_MODULE_GLOBALS(mbstring)
struct _zend_mb_regex_globals {
OnigEncoding default_mbctype;
OnigEncoding current_mbctype;
HashTable ht_rc;
zval search_str;
zval *search_str_val;
unsigned int search_pos;
php_mb_regex_t *search_re;
OnigRegion *search_regs;
OnigOptionType regex_default_options;
OnigSyntaxType *regex_default_syntax;
};
#define MBREX(g) (MBSTRG(mb_regex_globals)->g)
/* {{{ static void php_mb_regex_free_cache() */
static void php_mb_regex_free_cache(zval *el) {
onig_free((php_mb_regex_t *)Z_PTR_P(el));
}
/* }}} */
/* {{{ _php_mb_regex_globals_ctor */
static int _php_mb_regex_globals_ctor(zend_mb_regex_globals *pglobals)
{
pglobals->default_mbctype = ONIG_ENCODING_UTF8;
pglobals->current_mbctype = ONIG_ENCODING_UTF8;
zend_hash_init(&(pglobals->ht_rc), 0, NULL, php_mb_regex_free_cache, 1);
ZVAL_UNDEF(&pglobals->search_str);
pglobals->search_re = (php_mb_regex_t*)NULL;
pglobals->search_pos = 0;
pglobals->search_regs = (OnigRegion*)NULL;
pglobals->regex_default_options = ONIG_OPTION_MULTILINE | ONIG_OPTION_SINGLELINE;
pglobals->regex_default_syntax = ONIG_SYNTAX_RUBY;
return SUCCESS;
}
/* }}} */
/* {{{ _php_mb_regex_globals_dtor */
static void _php_mb_regex_globals_dtor(zend_mb_regex_globals *pglobals)
{
zend_hash_destroy(&pglobals->ht_rc);
}
/* }}} */
/* {{{ php_mb_regex_globals_alloc */
zend_mb_regex_globals *php_mb_regex_globals_alloc(void)
{
zend_mb_regex_globals *pglobals = pemalloc(
sizeof(zend_mb_regex_globals), 1);
if (!pglobals) {
return NULL;
}
if (SUCCESS != _php_mb_regex_globals_ctor(pglobals)) {
pefree(pglobals, 1);
return NULL;
}
return pglobals;
}
/* }}} */
/* {{{ php_mb_regex_globals_free */
void php_mb_regex_globals_free(zend_mb_regex_globals *pglobals)
{
if (!pglobals) {
return;
}
_php_mb_regex_globals_dtor(pglobals);
pefree(pglobals, 1);
}
/* }}} */
/* {{{ PHP_MINIT_FUNCTION(mb_regex) */
PHP_MINIT_FUNCTION(mb_regex)
{
onig_init();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MSHUTDOWN_FUNCTION(mb_regex) */
PHP_MSHUTDOWN_FUNCTION(mb_regex)
{
onig_end();
return SUCCESS;
}
/* }}} */
/* {{{ PHP_RINIT_FUNCTION(mb_regex) */
PHP_RINIT_FUNCTION(mb_regex)
{
return MBSTRG(mb_regex_globals) ? SUCCESS: FAILURE;
}
/* }}} */
/* {{{ PHP_RSHUTDOWN_FUNCTION(mb_regex) */
PHP_RSHUTDOWN_FUNCTION(mb_regex)
{
MBREX(current_mbctype) = MBREX(default_mbctype);
if (!Z_ISUNDEF(MBREX(search_str))) {
zval_ptr_dtor(&MBREX(search_str));
ZVAL_UNDEF(&MBREX(search_str));
}
MBREX(search_pos) = 0;
if (MBREX(search_regs) != NULL) {
onig_region_free(MBREX(search_regs), 1);
MBREX(search_regs) = (OnigRegion *)NULL;
}
zend_hash_clean(&MBREX(ht_rc));
return SUCCESS;
}
/* }}} */
/* {{{ PHP_MINFO_FUNCTION(mb_regex) */
PHP_MINFO_FUNCTION(mb_regex)
{
char buf[32];
php_info_print_table_start();
php_info_print_table_row(2, "Multibyte (japanese) regex support", "enabled");
snprintf(buf, sizeof(buf), "%d.%d.%d",
ONIGURUMA_VERSION_MAJOR,
ONIGURUMA_VERSION_MINOR,
ONIGURUMA_VERSION_TEENY);
#ifdef PHP_ONIG_BUNDLED
#ifdef USE_COMBINATION_EXPLOSION_CHECK
php_info_print_table_row(2, "Multibyte regex (oniguruma) backtrack check", "On");
#else /* USE_COMBINATION_EXPLOSION_CHECK */
php_info_print_table_row(2, "Multibyte regex (oniguruma) backtrack check", "Off");
#endif /* USE_COMBINATION_EXPLOSION_CHECK */
#endif /* PHP_BUNDLED_ONIG */
php_info_print_table_row(2, "Multibyte regex (oniguruma) version", buf);
php_info_print_table_end();
}
/* }}} */
/*
* encoding name resolver
*/
/* {{{ encoding name map */
typedef struct _php_mb_regex_enc_name_map_t {
const char *names;
OnigEncoding code;
} php_mb_regex_enc_name_map_t;
php_mb_regex_enc_name_map_t enc_name_map[] = {
#ifdef ONIG_ENCODING_EUC_JP
{
"EUC-JP\0EUCJP\0X-EUC-JP\0UJIS\0EUCJP\0EUCJP-WIN\0",
ONIG_ENCODING_EUC_JP
},
#endif
#ifdef ONIG_ENCODING_UTF8
{
"UTF-8\0UTF8\0",
ONIG_ENCODING_UTF8
},
#endif
#ifdef ONIG_ENCODING_UTF16_BE
{
"UTF-16\0UTF-16BE\0",
ONIG_ENCODING_UTF16_BE
},
#endif
#ifdef ONIG_ENCODING_UTF16_LE
{
"UTF-16LE\0",
ONIG_ENCODING_UTF16_LE
},
#endif
#ifdef ONIG_ENCODING_UTF32_BE
{
"UCS-4\0UTF-32\0UTF-32BE\0",
ONIG_ENCODING_UTF32_BE
},
#endif
#ifdef ONIG_ENCODING_UTF32_LE
{
"UCS-4LE\0UTF-32LE\0",
ONIG_ENCODING_UTF32_LE
},
#endif
#ifdef ONIG_ENCODING_SJIS
{
"SJIS\0CP932\0MS932\0SHIFT_JIS\0SJIS-WIN\0WINDOWS-31J\0",
ONIG_ENCODING_SJIS
},
#endif
#ifdef ONIG_ENCODING_BIG5
{
"BIG5\0BIG-5\0BIGFIVE\0CN-BIG5\0BIG-FIVE\0",
ONIG_ENCODING_BIG5
},
#endif
#ifdef ONIG_ENCODING_EUC_CN
{
"EUC-CN\0EUCCN\0EUC_CN\0GB-2312\0GB2312\0",
ONIG_ENCODING_EUC_CN
},
#endif
#ifdef ONIG_ENCODING_EUC_TW
{
"EUC-TW\0EUCTW\0EUC_TW\0",
ONIG_ENCODING_EUC_TW
},
#endif
#ifdef ONIG_ENCODING_EUC_KR
{
"EUC-KR\0EUCKR\0EUC_KR\0",
ONIG_ENCODING_EUC_KR
},
#endif
#if defined(ONIG_ENCODING_KOI8) && !PHP_ONIG_BAD_KOI8_ENTRY
{
"KOI8\0KOI-8\0",
ONIG_ENCODING_KOI8
},
#endif
#ifdef ONIG_ENCODING_KOI8_R
{
"KOI8R\0KOI8-R\0KOI-8R\0",
ONIG_ENCODING_KOI8_R
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_1
{
"ISO-8859-1\0ISO8859-1\0ISO_8859_1\0ISO8859_1\0",
ONIG_ENCODING_ISO_8859_1
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_2
{
"ISO-8859-2\0ISO8859-2\0ISO_8859_2\0ISO8859_2\0",
ONIG_ENCODING_ISO_8859_2
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_3
{
"ISO-8859-3\0ISO8859-3\0ISO_8859_3\0ISO8859_3\0",
ONIG_ENCODING_ISO_8859_3
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_4
{
"ISO-8859-4\0ISO8859-4\0ISO_8859_4\0ISO8859_4\0",
ONIG_ENCODING_ISO_8859_4
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_5
{
"ISO-8859-5\0ISO8859-5\0ISO_8859_5\0ISO8859_5\0",
ONIG_ENCODING_ISO_8859_5
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_6
{
"ISO-8859-6\0ISO8859-6\0ISO_8859_6\0ISO8859_6\0",
ONIG_ENCODING_ISO_8859_6
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_7
{
"ISO-8859-7\0ISO8859-7\0ISO_8859_7\0ISO8859_7\0",
ONIG_ENCODING_ISO_8859_7
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_8
{
"ISO-8859-8\0ISO8859-8\0ISO_8859_8\0ISO8859_8\0",
ONIG_ENCODING_ISO_8859_8
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_9
{
"ISO-8859-9\0ISO8859-9\0ISO_8859_9\0ISO8859_9\0",
ONIG_ENCODING_ISO_8859_9
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_10
{
"ISO-8859-10\0ISO8859-10\0ISO_8859_10\0ISO8859_10\0",
ONIG_ENCODING_ISO_8859_10
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_11
{
"ISO-8859-11\0ISO8859-11\0ISO_8859_11\0ISO8859_11\0",
ONIG_ENCODING_ISO_8859_11
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_13
{
"ISO-8859-13\0ISO8859-13\0ISO_8859_13\0ISO8859_13\0",
ONIG_ENCODING_ISO_8859_13
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_14
{
"ISO-8859-14\0ISO8859-14\0ISO_8859_14\0ISO8859_14\0",
ONIG_ENCODING_ISO_8859_14
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_15
{
"ISO-8859-15\0ISO8859-15\0ISO_8859_15\0ISO8859_15\0",
ONIG_ENCODING_ISO_8859_15
},
#endif
#ifdef ONIG_ENCODING_ISO_8859_16
{
"ISO-8859-16\0ISO8859-16\0ISO_8859_16\0ISO8859_16\0",
ONIG_ENCODING_ISO_8859_16
},
#endif
#ifdef ONIG_ENCODING_ASCII
{
"ASCII\0US-ASCII\0US_ASCII\0ISO646\0",
ONIG_ENCODING_ASCII
},
#endif
{ NULL, ONIG_ENCODING_UNDEF }
};
/* }}} */
/* {{{ php_mb_regex_name2mbctype */
static OnigEncoding _php_mb_regex_name2mbctype(const char *pname)
{
const char *p;
php_mb_regex_enc_name_map_t *mapping;
if (pname == NULL || !*pname) {
return ONIG_ENCODING_UNDEF;
}
for (mapping = enc_name_map; mapping->names != NULL; mapping++) {
for (p = mapping->names; *p != '\0'; p += (strlen(p) + 1)) {
if (strcasecmp(p, pname) == 0) {
return mapping->code;
}
}
}
return ONIG_ENCODING_UNDEF;
}
/* }}} */
/* {{{ php_mb_regex_mbctype2name */
static const char *_php_mb_regex_mbctype2name(OnigEncoding mbctype)
{
php_mb_regex_enc_name_map_t *mapping;
for (mapping = enc_name_map; mapping->names != NULL; mapping++) {
if (mapping->code == mbctype) {
return mapping->names;
}
}
return NULL;
}
/* }}} */
/* {{{ php_mb_regex_set_mbctype */
int php_mb_regex_set_mbctype(const char *encname)
{
OnigEncoding mbctype = _php_mb_regex_name2mbctype(encname);
if (mbctype == ONIG_ENCODING_UNDEF) {
return FAILURE;
}
MBREX(current_mbctype) = mbctype;
return SUCCESS;
}
/* }}} */
/* {{{ php_mb_regex_set_default_mbctype */
int php_mb_regex_set_default_mbctype(const char *encname)
{
OnigEncoding mbctype = _php_mb_regex_name2mbctype(encname);
if (mbctype == ONIG_ENCODING_UNDEF) {
return FAILURE;
}
MBREX(default_mbctype) = mbctype;
return SUCCESS;
}
/* }}} */
/* {{{ php_mb_regex_get_mbctype */
const char *php_mb_regex_get_mbctype(void)
{
return _php_mb_regex_mbctype2name(MBREX(current_mbctype));
}
/* }}} */
/* {{{ php_mb_regex_get_default_mbctype */
const char *php_mb_regex_get_default_mbctype(void)
{
return _php_mb_regex_mbctype2name(MBREX(default_mbctype));
}
/* }}} */
/*
* regex cache
*/
/* {{{ php_mbregex_compile_pattern */
static php_mb_regex_t *php_mbregex_compile_pattern(const char *pattern, int patlen, OnigOptionType options, OnigEncoding enc, OnigSyntaxType *syntax)
{
int err_code = 0;
php_mb_regex_t *retval = NULL, *rc = NULL;
OnigErrorInfo err_info;
OnigUChar err_str[ONIG_MAX_ERROR_MESSAGE_LEN];
rc = zend_hash_str_find_ptr(&MBREX(ht_rc), (char *)pattern, patlen);
if (!rc || rc->options != options || rc->enc != enc || rc->syntax != syntax) {
if ((err_code = onig_new(&retval, (OnigUChar *)pattern, (OnigUChar *)(pattern + patlen), options, enc, syntax, &err_info)) != ONIG_NORMAL) {
onig_error_code_to_str(err_str, err_code, err_info);
php_error_docref(NULL, E_WARNING, "mbregex compile err: %s", err_str);
retval = NULL;
goto out;
}
if (rc == MBREX(search_re)) {
/* reuse the new rc? see bug #72399 */
MBREX(search_re) = NULL;
}
zend_hash_str_update_ptr(&MBREX(ht_rc), (char *)pattern, patlen, retval);
} else {
retval = rc;
}
out:
return retval;
}
/* }}} */
/* {{{ _php_mb_regex_get_option_string */
static size_t _php_mb_regex_get_option_string(char *str, size_t len, OnigOptionType option, OnigSyntaxType *syntax)
{
size_t len_left = len;
size_t len_req = 0;
char *p = str;
char c;
if ((option & ONIG_OPTION_IGNORECASE) != 0) {
if (len_left > 0) {
--len_left;
*(p++) = 'i';
}
++len_req;
}
if ((option & ONIG_OPTION_EXTEND) != 0) {
if (len_left > 0) {
--len_left;
*(p++) = 'x';
}
++len_req;
}
if ((option & (ONIG_OPTION_MULTILINE | ONIG_OPTION_SINGLELINE)) ==
(ONIG_OPTION_MULTILINE | ONIG_OPTION_SINGLELINE)) {
if (len_left > 0) {
--len_left;
*(p++) = 'p';
}
++len_req;
} else {
if ((option & ONIG_OPTION_MULTILINE) != 0) {
if (len_left > 0) {
--len_left;
*(p++) = 'm';
}
++len_req;
}
if ((option & ONIG_OPTION_SINGLELINE) != 0) {
if (len_left > 0) {
--len_left;
*(p++) = 's';
}
++len_req;
}
}
if ((option & ONIG_OPTION_FIND_LONGEST) != 0) {
if (len_left > 0) {
--len_left;
*(p++) = 'l';
}
++len_req;
}
if ((option & ONIG_OPTION_FIND_NOT_EMPTY) != 0) {
if (len_left > 0) {
--len_left;
*(p++) = 'n';
}
++len_req;
}
c = 0;
if (syntax == ONIG_SYNTAX_JAVA) {
c = 'j';
} else if (syntax == ONIG_SYNTAX_GNU_REGEX) {
c = 'u';
} else if (syntax == ONIG_SYNTAX_GREP) {
c = 'g';
} else if (syntax == ONIG_SYNTAX_EMACS) {
c = 'c';
} else if (syntax == ONIG_SYNTAX_RUBY) {
c = 'r';
} else if (syntax == ONIG_SYNTAX_PERL) {
c = 'z';
} else if (syntax == ONIG_SYNTAX_POSIX_BASIC) {
c = 'b';
} else if (syntax == ONIG_SYNTAX_POSIX_EXTENDED) {
c = 'd';
}
if (c != 0) {
if (len_left > 0) {
--len_left;
*(p++) = c;
}
++len_req;
}
if (len_left > 0) {
--len_left;
*(p++) = '\0';
}
++len_req;
if (len < len_req) {
return len_req;
}
return 0;
}
/* }}} */
/* {{{ _php_mb_regex_init_options */
static void
_php_mb_regex_init_options(const char *parg, int narg, OnigOptionType *option, OnigSyntaxType **syntax, int *eval)
{
int n;
char c;
int optm = 0;
*syntax = ONIG_SYNTAX_RUBY;
if (parg != NULL) {
n = 0;
while(n < narg) {
c = parg[n++];
switch (c) {
case 'i':
optm |= ONIG_OPTION_IGNORECASE;
break;
case 'x':
optm |= ONIG_OPTION_EXTEND;
break;
case 'm':
optm |= ONIG_OPTION_MULTILINE;
break;
case 's':
optm |= ONIG_OPTION_SINGLELINE;
break;
case 'p':
optm |= ONIG_OPTION_MULTILINE | ONIG_OPTION_SINGLELINE;
break;
case 'l':
optm |= ONIG_OPTION_FIND_LONGEST;
break;
case 'n':
optm |= ONIG_OPTION_FIND_NOT_EMPTY;
break;
case 'j':
*syntax = ONIG_SYNTAX_JAVA;
break;
case 'u':
*syntax = ONIG_SYNTAX_GNU_REGEX;
break;
case 'g':
*syntax = ONIG_SYNTAX_GREP;
break;
case 'c':
*syntax = ONIG_SYNTAX_EMACS;
break;
case 'r':
*syntax = ONIG_SYNTAX_RUBY;
break;
case 'z':
*syntax = ONIG_SYNTAX_PERL;
break;
case 'b':
*syntax = ONIG_SYNTAX_POSIX_BASIC;
break;
case 'd':
*syntax = ONIG_SYNTAX_POSIX_EXTENDED;
break;
case 'e':
if (eval != NULL) *eval = 1;
break;
default:
break;
}
}
if (option != NULL) *option|=optm;
}
}
/* }}} */
/*
* php functions
*/
/* {{{ proto string mb_regex_encoding([string encoding])
Returns the current encoding for regex as a string. */
PHP_FUNCTION(mb_regex_encoding)
{
char *encoding = NULL;
size_t encoding_len;
OnigEncoding mbctype;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "|s", &encoding, &encoding_len) == FAILURE) {
return;
}
if (!encoding) {
const char *retval = _php_mb_regex_mbctype2name(MBREX(current_mbctype));
if (retval == NULL) {
RETURN_FALSE;
}
RETURN_STRING((char *)retval);
} else {
mbctype = _php_mb_regex_name2mbctype(encoding);
if (mbctype == ONIG_ENCODING_UNDEF) {
php_error_docref(NULL, E_WARNING, "Unknown encoding \"%s\"", encoding);
RETURN_FALSE;
}
MBREX(current_mbctype) = mbctype;
RETURN_TRUE;
}
}
/* }}} */
/* {{{ _php_mb_regex_ereg_exec */
static void _php_mb_regex_ereg_exec(INTERNAL_FUNCTION_PARAMETERS, int icase)
{
zval *arg_pattern, *array = NULL;
char *string;
size_t string_len;
php_mb_regex_t *re;
OnigRegion *regs = NULL;
int i, match_len, beg, end;
OnigOptionType options;
char *str;
if (zend_parse_parameters(ZEND_NUM_ARGS(), "zs|z/", &arg_pattern, &string, &string_len, &array) == FAILURE) {
RETURN_FALSE;
}
options = MBREX(regex_default_options);
if (icase) {
options |= ONIG_OPTION_IGNORECASE;
}
/* compile the regular expression from the supplied regex */
if (Z_TYPE_P(arg_pattern) != IS_STRING) {
/* we convert numbers to integers and treat them as a string */
if (Z_TYPE_P(arg_pattern) == IS_DOUBLE) {
convert_to_long_ex(arg_pattern); /* get rid of decimal places */
}
convert_to_string_ex(arg_pattern);
/* don't bother doing an extended regex with just a number */
}
if (Z_STRLEN_P(arg_pattern) == 0) {
php_error_docref(NULL, E_WARNING, "empty pattern");
RETVAL_FALSE;
goto out;
}
re = php_mbregex_compile_pattern(Z_STRVAL_P(arg_pattern), Z_STRLEN_P(arg_pattern), options, MBREX(current_mbctype), MBREX(regex_default_syntax));
if (re == NULL) {
RETVAL_FALSE;
goto out;
}
regs = onig_region_new();
/* actually execute the regular expression */
if (onig_search(re, (OnigUChar *)string, (OnigUChar *)(string + string_len), (OnigUChar *)string, (OnigUChar *)(string + string_len), regs, 0) < 0) {
RETVAL_FALSE;
goto out;
}
match_len = 1;
str = string;
if (array != NULL) {
zval_dtor(array);
array_init(array);
match_len = regs->end[0] - regs->beg[0];
for (i = 0; i < regs->num_regs; i++) {
beg = regs->beg[i];
end = regs->end[i];
if (beg >= 0 && beg < end && end <= string_len) {
add_index_stringl(array, i, (char *)&str[beg], end - beg);
} else {
add_index_bool(array, i, 0);
}
}
}
if (match_len == 0) {
match_len = 1;
}
RETVAL_LONG(match_len);
out:
if (regs != NULL) {
onig_region_free(regs, 1);
}
}
/* }}} */
/* {{{ proto int mb_ereg(string pattern, string string [, array registers])
Regular expression match for multibyte string */
PHP_FUNCTION(mb_ereg)
{
_php_mb_regex_ereg_exec(INTERNAL_FUNCTION_PARAM_PASSTHRU, 0);
}
/* }}} */
/* {{{ proto int mb_eregi(string pattern, string string [, array registers])
Case-insensitive regular expression match for multibyte string */
PHP_FUNCTION(mb_eregi)
{
_php_mb_regex_ereg_exec(INTERNAL_FUNCTION_PARAM_PASSTHRU, 1);
}
/* }}} */
/* {{{ _php_mb_regex_ereg_replace_exec */
static void _php_mb_regex_ereg_replace_exec(INTERNAL_FUNCTION_PARAMETERS, OnigOptionType options, int is_callable)
{
zval *arg_pattern_zval;
char *arg_pattern;
size_t arg_pattern_len;
char *replace;
size_t replace_len;
zend_fcall_info arg_replace_fci;
zend_fcall_info_cache arg_replace_fci_cache;
char *string;
size_t string_len;
char *p;
php_mb_regex_t *re;
OnigSyntaxType *syntax;
OnigRegion *regs = NULL;
smart_str out_buf = {0};
smart_str eval_buf = {0};
smart_str *pbuf;
int i, err, eval, n;
OnigUChar *pos;
OnigUChar *string_lim;
char *description = NULL;
char pat_buf[6];
const mbfl_encoding *enc;
{
const char *current_enc_name;
current_enc_name = _php_mb_regex_mbctype2name(MBREX(current_mbctype));
if (current_enc_name == NULL ||
(enc = mbfl_name2encoding(current_enc_name)) == NULL) {
php_error_docref(NULL, E_WARNING, "Unknown error");
RETURN_FALSE;
}
}
eval = 0;
{
char *option_str = NULL;
size_t option_str_len = 0;
if (!is_callable) {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "zss|s",
&arg_pattern_zval,
&replace, &replace_len,
&string, &string_len,
&option_str, &option_str_len) == FAILURE) {
RETURN_FALSE;
}
} else {
if (zend_parse_parameters(ZEND_NUM_ARGS(), "zfs|s",
&arg_pattern_zval,
&arg_replace_fci, &arg_replace_fci_cache,
&string, &string_len,
&option_str, &option_str_len) == FAILURE) {
RETURN_FALSE;
}
}
if (option_str != NULL) {
_php_mb_regex_init_options(option_str, option_str_len, &options, &syntax, &eval);
} else {
options |= MBREX(regex_default_options);
syntax = MBREX(regex_default_syntax);
}
}
if (Z_TYPE_P(arg_pattern_zval) == IS_STRING) {
arg_pattern = Z_STRVAL_P(arg_pattern_zval);
arg_pattern_len = Z_STRLEN_P(arg_pattern_zval);
} else {
/* FIXME: this code is not multibyte aware! */
convert_to_long_ex(arg_pattern_zval);
pat_buf[0] = (char)Z_LVAL_P(arg_pattern_zval);
pat_buf[1] = '\0';
pat_buf[2] = '\0';
pat_buf[3] = '\0';
pat_buf[4] = '\0';
pat_buf[5] = '\0';
arg_pattern = pat_buf;
arg_pattern_len = 1;
}
/* create regex pattern buffer */
re = php_mbregex_compile_pattern(arg_pattern, arg_pattern_len, options, MBREX(current_mbctype), syntax);
if (re == NULL) {
RETURN_FALSE;
}
if (eval || is_callable) {
pbuf = &eval_buf;
description = zend_make_compiled_string_description("mbregex replace");
} else {
pbuf = &out_buf;
description = NULL;
}
if (is_callable) {
if (eval) {
php_error_docref(NULL, E_WARNING, "Option 'e' cannot be used with replacement callback");
RETURN_FALSE;
}
}
/* do the actual work */
err = 0;
pos = (OnigUChar *)string;
string_lim = (OnigUChar*)(string + string_len);
regs = onig_region_new();
while (err >= 0) {
err = onig_search(re, (OnigUChar *)string, (OnigUChar *)string_lim, pos, (OnigUChar *)string_lim, regs, 0);
if (err <= -2) {
OnigUChar err_str[ONIG_MAX_ERROR_MESSAGE_LEN];
onig_error_code_to_str(err_str, err);
php_error_docref(NULL, E_WARNING, "mbregex search failure in php_mbereg_replace_exec(): %s", err_str);
break;
}
if (err >= 0) {
#if moriyoshi_0
if (regs->beg[0] == regs->end[0]) {
php_error_docref(NULL, E_WARNING, "Empty regular expression");
break;
}
#endif
/* copy the part of the string before the match */
smart_str_appendl(&out_buf, (char *)pos, (size_t)((OnigUChar *)(string + regs->beg[0]) - pos));
if (!is_callable) {
/* copy replacement and backrefs */
i = 0;
p = replace;
while (i < replace_len) {
int fwd = (int) php_mb_mbchar_bytes_ex(p, enc);
n = -1;
if ((replace_len - i) >= 2 && fwd == 1 &&
p[0] == '\\' && p[1] >= '0' && p[1] <= '9') {
n = p[1] - '0';
}
if (n >= 0 && n < regs->num_regs) {
if (regs->beg[n] >= 0 && regs->beg[n] < regs->end[n] && regs->end[n] <= string_len) {
smart_str_appendl(pbuf, string + regs->beg[n], regs->end[n] - regs->beg[n]);
}
p += 2;
i += 2;
} else {
smart_str_appendl(pbuf, p, fwd);
p += fwd;
i += fwd;
}
}
}
if (eval) {
zval v;
zend_string *eval_str;
/* null terminate buffer */
smart_str_0(&eval_buf);
if (eval_buf.s) {
eval_str = eval_buf.s;
} else {
eval_str = ZSTR_EMPTY_ALLOC();
}
/* do eval */
if (zend_eval_stringl(ZSTR_VAL(eval_str), ZSTR_LEN(eval_str), &v, description) == FAILURE) {
efree(description);
php_error_docref(NULL,E_ERROR, "Failed evaluating code: %s%s", PHP_EOL, ZSTR_VAL(eval_str));
/* zend_error() does not return in this case */
}
/* result of eval */
convert_to_string(&v);
smart_str_appendl(&out_buf, Z_STRVAL(v), Z_STRLEN(v));
/* Clean up */
smart_str_free(&eval_buf);
zval_dtor(&v);
} else if (is_callable) {
zval args[1];
zval subpats, retval;
int i;
array_init(&subpats);
for (i = 0; i < regs->num_regs; i++) {
add_next_index_stringl(&subpats, string + regs->beg[i], regs->end[i] - regs->beg[i]);
}
ZVAL_COPY_VALUE(&args[0], &subpats);
/* null terminate buffer */
smart_str_0(&eval_buf);
arg_replace_fci.param_count = 1;
arg_replace_fci.params = args;
arg_replace_fci.retval = &retval;
if (zend_call_function(&arg_replace_fci, &arg_replace_fci_cache) == SUCCESS &&
!Z_ISUNDEF(retval)) {
convert_to_string_ex(&retval);
smart_str_appendl(&out_buf, Z_STRVAL(retval), Z_STRLEN(retval));
smart_str_free(&eval_buf);
zval_ptr_dtor(&retval);
} else {
if (!EG(exception)) {
php_error_docref(NULL, E_WARNING, "Unable to call custom replacement function");
}
}
zval_ptr_dtor(&subpats);
}
n = regs->end[0];
if ((pos - (OnigUChar *)string) < n) {
pos = (OnigUChar *)string + n;