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string.c
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/**
* This file is part of the Zephir.
*
* (c) Phalcon Team <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code. If you did not receive
* a copy of the license it is available through the world-wide-web at the
* following url: https://docs.zephir-lang.com/en/latest/license
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <ctype.h>
#include <php.h>
#include "php_ext.h"
#include "php_main.h"
#include <ext/standard/php_smart_string.h>
#include <ext/standard/php_string.h>
#include <ext/standard/php_rand.h>
#include <ext/standard/php_lcg.h>
#include <ext/standard/php_http.h>
#include <ext/standard/base64.h>
#include <ext/standard/md5.h>
#include <ext/standard/crc32.h>
#include <ext/standard/url.h>
#include <ext/standard/html.h>
#include <ext/date/php_date.h>
#if defined ZEPHIR_USE_PHP_PCRE && ZEPHIR_USE_PHP_PCRE
#include <ext/pcre/php_pcre.h>
#endif
#include <ext/json/php_json.h>
#include "kernel/main.h"
#include "kernel/memory.h"
#include "kernel/string.h"
#include "kernel/operators.h"
#include "kernel/fcall.h"
#define PH_RANDOM_ALNUM 0
#define PH_RANDOM_ALPHA 1
#define PH_RANDOM_HEXDEC 2
#define PH_RANDOM_NUMERIC 3
#define PH_RANDOM_NOZERO 4
/**
* This function is not external in the Zend API so we redeclare it here in the extension
*/
int zephir_spprintf(char **message, int max_len, char *format, ...)
{
va_list arg;
int len;
va_start(arg, format);
len = vspprintf(message, max_len, format, arg);
va_end(arg);
return len;
}
/**
* Fast call to php strlen
*/
int zephir_fast_strlen_ev(zval *str)
{
zval copy;
int use_copy = 0, length;
if (Z_TYPE_P(str) != IS_STRING) {
use_copy = zend_make_printable_zval(str, ©);
if (use_copy) {
str = ©
}
}
length = Z_STRLEN_P(str);
if (use_copy) {
zval_dtor(str);
}
return length;
}
/**
* Fast call to php strtolower
*/
void zephir_fast_strtolower(zval *return_value, zval *str)
{
zval copy;
int use_copy = 0;
char *lower_str;
unsigned int length;
if (Z_TYPE_P(str) != IS_STRING) {
use_copy = zend_make_printable_zval(str, ©);
if (use_copy) {
str = ©
}
}
length = Z_STRLEN_P(str);
lower_str = estrndup(Z_STRVAL_P(str), length);
php_strtolower(lower_str, length);
if (use_copy) {
zval_dtor(str);
}
ZVAL_STRINGL(return_value, lower_str, length);
efree(lower_str);
}
/**
* Fast call to PHP strtoupper() function
*/
void zephir_fast_strtoupper(zval *return_value, zval *str)
{
zval copy;
int use_copy = 0;
char *lower_str;
unsigned int length;
if (Z_TYPE_P(str) != IS_STRING) {
use_copy = zend_make_printable_zval(str, ©);
if (use_copy) {
str = ©
}
}
length = Z_STRLEN_P(str);
lower_str = estrndup(Z_STRVAL_P(str), length);
php_strtoupper(lower_str, length);
if (use_copy) {
zval_dtor(str);
}
ZVAL_STRINGL(return_value, lower_str, length);
efree(lower_str);
}
/**
* Checks if a zval string starts with a zval string
*/
int zephir_start_with(const zval *str, const zval *compared, zval *case_sensitive)
{
int i;
int sensitive = 0;
char *op1_cursor, *op2_cursor;
if (Z_TYPE_P(str) != IS_STRING || Z_TYPE_P(compared) != IS_STRING) {
return 0;
}
if (!Z_STRLEN_P(compared) || !Z_STRLEN_P(str) || Z_STRLEN_P(compared) > Z_STRLEN_P(str)) {
return 0;
}
if (case_sensitive) {
sensitive = zend_is_true(case_sensitive);
}
if (!sensitive) {
return !memcmp(Z_STRVAL_P(str), Z_STRVAL_P(compared), Z_STRLEN_P(compared));
}
op1_cursor = Z_STRVAL_P(str);
op2_cursor = Z_STRVAL_P(compared);
for (i = 0; i < Z_STRLEN_P(compared); i++) {
if (tolower(*op1_cursor) != tolower(*op2_cursor)) {
return 0;
}
op1_cursor++;
op2_cursor++;
}
return 1;
}
/**
* Checks if a zval string starts with a string
*/
int zephir_start_with_str(const zval *str, char *compared, unsigned int compared_length)
{
if (Z_TYPE_P(str) != IS_STRING || compared_length > Z_STRLEN_P(str)) {
return 0;
}
return !memcmp(Z_STRVAL_P(str), compared, compared_length);
}
/**
* Checks if a string starts with other string
*/
int zephir_start_with_str_str(char *str, unsigned int str_length, char *compared, unsigned int compared_length)
{
if (compared_length > str_length) {
return 0;
}
return !memcmp(str, compared, compared_length);
}
/**
* Checks if a zval string ends with a zval string
*/
int zephir_end_with(const zval *str, const zval *compared, zval *case_sensitive)
{
int sensitive = 0;
int i;
char *op1_cursor, *op2_cursor;
if (Z_TYPE_P(str) != IS_STRING || Z_TYPE_P(compared) != IS_STRING) {
return 0;
}
if (!Z_STRLEN_P(compared) || !Z_STRLEN_P(str) || Z_STRLEN_P(compared) > Z_STRLEN_P(str)) {
return 0;
}
if (case_sensitive) {
sensitive = zend_is_true(case_sensitive);
}
if (!sensitive) {
return !memcmp(Z_STRVAL_P(str) + Z_STRLEN_P(str) - Z_STRLEN_P(compared), Z_STRVAL_P(compared), Z_STRLEN_P(compared));
}
op1_cursor = Z_STRVAL_P(str) + Z_STRLEN_P(str) - Z_STRLEN_P(compared);
op2_cursor = Z_STRVAL_P(compared);
for (i = 0; i < Z_STRLEN_P(compared); ++i) {
if (tolower(*op1_cursor) != tolower(*op2_cursor)) {
return 0;
}
++op1_cursor;
++op2_cursor;
}
return 1;
}
/**
* Checks if a zval string ends with a *char string
*/
int zephir_end_with_str(const zval *str, char *compared, unsigned int compared_length)
{
if (Z_TYPE_P(str) != IS_STRING) {
return 0;
}
if (!compared_length || !Z_STRLEN_P(str) || compared_length > Z_STRLEN_P(str)) {
return 0;
}
return !memcmp(Z_STRVAL_P(str) + Z_STRLEN_P(str) - compared_length, compared, compared_length);
}
/**
* Makes a substr like the PHP function. This function SUPPORT negative from and length
*/
void zephir_substr(zval *return_value, zval *str, long f, long l, int flags)
{
zval copy;
int use_copy = 0;
int str_len;
if (Z_TYPE_P(str) != IS_STRING) {
if (Z_TYPE_P(str) == IS_NULL || Z_TYPE_P(str) == IS_TRUE || Z_TYPE_P(str) == IS_FALSE) {
RETURN_FALSE;
}
if (Z_TYPE_P(str) != IS_STRING) {
use_copy = zend_make_printable_zval(str, ©);
if (use_copy) {
str = ©
}
}
}
str_len = Z_STRLEN_P(str);
if ((flags & ZEPHIR_SUBSTR_NO_LENGTH) == ZEPHIR_SUBSTR_NO_LENGTH) {
l = str_len;
}
if ((l < 0 && -l > str_len)) {
if (use_copy) {
zval_dtor(str);
}
RETURN_FALSE;
} else {
if (l > str_len) {
l = str_len;
}
}
if (f > str_len) {
if (use_copy) {
zval_dtor(str);
}
RETURN_FALSE;
} else {
if (f < 0 && -f > str_len) {
f = 0;
}
}
if (l < 0 && (l + str_len - f) < 0) {
if (use_copy) {
zval_dtor(str);
}
RETURN_FALSE;
}
/* if "from" position is negative, count start position from the end
* of the string
*/
if (f < 0) {
f = str_len + f;
if (f < 0) {
f = 0;
}
}
/* if "length" position is negative, set it to the length
* needed to stop that many chars from the end of the string
*/
if (l < 0) {
l = (str_len - f) + l;
if (l < 0) {
l = 0;
}
}
if (f >= str_len) {
if (use_copy) {
zval_dtor(str);
}
RETURN_FALSE;
}
if ((f + l) > str_len) {
l = str_len - f;
}
if (!l) {
if (use_copy) {
zval_dtor(str);
}
RETURN_EMPTY_STRING();
}
ZVAL_STRINGL(return_value, Z_STRVAL_P(str) + f, l);
if (use_copy) {
zval_dtor(str);
}
return;
}
/**
* Appends to a smart_str a printable version of a zval
*/
static void zephir_append_printable_zval(smart_str *implstr, zval *tmp)
{
switch (Z_TYPE_P(tmp)) {
case IS_STRING:
smart_str_appendl(implstr, Z_STRVAL_P(tmp), Z_STRLEN_P(tmp));
break;
default:
smart_str_append(implstr, _zval_get_string_func(tmp));
break;
}
}
void zephir_append_printable_array(smart_str *implstr, const zval *value)
{
zend_array *arr;
unsigned int numelems;
arr = Z_ARRVAL_P(value);
numelems = zend_hash_num_elements(arr);
smart_str_appendc(implstr, '[');
if (numelems > 0) {
zval *tmp;
unsigned int i = 0;
ZEND_HASH_FOREACH_VAL(arr, tmp) {
if (Z_TYPE_P(tmp) == IS_OBJECT) {
} else {
if (Z_TYPE_P(tmp) == IS_ARRAY) {
zephir_append_printable_array(implstr, tmp);
} else {
zephir_append_printable_zval(implstr, tmp);
}
}
if (++i != numelems) {
smart_str_appendc(implstr, ',');
}
} ZEND_HASH_FOREACH_END();
}
smart_str_appendc(implstr, ']');
}
/**
* Creates a unique key to be used as index in a hash
*/
void zephir_unique_key(zval *return_value, const zval *prefix, zval *value)
{
smart_str implstr = {0};
if (Z_TYPE_P(prefix) == IS_STRING) {
smart_str_appendl(&implstr, Z_STRVAL_P(prefix), Z_STRLEN_P(prefix));
}
if (Z_TYPE_P(value) == IS_ARRAY) {
zephir_append_printable_array(&implstr, value);
} else {
zephir_append_printable_zval(&implstr, value);
}
smart_str_0(&implstr);
if (implstr.s) {
RETURN_STR(implstr.s);
} else {
smart_str_free(&implstr);
RETURN_NULL();
}
}
/**
* Fast call to php join function
*/
void zephir_fast_join(zval *result, zval *glue, zval *pieces)
{
if (Z_TYPE_P(glue) != IS_STRING || Z_TYPE_P(pieces) != IS_ARRAY) {
ZVAL_NULL(result);
zend_error(E_WARNING, "Invalid arguments supplied for join()");
return;
}
php_implode(Z_STR_P(glue), Z_ARRVAL_P(pieces), result);
}
/**
* Fast join function
* This function is an adaption of the php_implode function
*
*/
void zephir_fast_join_str(zval *return_value, char *glue, unsigned int glue_length, zval *pieces)
{
zval *tmp;
int numelems;
zend_string *str;
char *cptr;
size_t len = 0;
zend_string **strings, **strptr;
zend_array *arr;
if (Z_TYPE_P(pieces) != IS_ARRAY) {
php_error_docref(NULL, E_WARNING, "Invalid arguments supplied for fast_join()");
RETURN_EMPTY_STRING();
}
arr = Z_ARRVAL_P(pieces);
numelems = zend_hash_num_elements(arr);
if (numelems == 0) {
RETURN_EMPTY_STRING();
} else if (numelems == 1) {
/* loop to search the first not undefined element... */
ZEND_HASH_FOREACH_VAL(arr, tmp) {
RETURN_STR(zval_get_string(tmp));
} ZEND_HASH_FOREACH_END();
}
strings = emalloc((sizeof(zend_long) + sizeof(zend_string *)) * numelems);
strptr = strings - 1;
ZEND_HASH_FOREACH_VAL(arr, tmp) {
if (Z_TYPE_P(tmp) == IS_LONG) {
double val = Z_LVAL_P(tmp);
*++strptr = NULL;
((zend_long *) (strings + numelems))[strptr - strings] = Z_LVAL_P(tmp);
if (val < 0) {
val = -10 * val;
}
if (val < 10) {
len++;
} else {
len += (int) log10(10 * (double) val);
}
} else {
*++strptr = zval_get_string(tmp);
len += ZSTR_LEN(*strptr);
}
} ZEND_HASH_FOREACH_END();
str = zend_string_alloc(len + (numelems - 1) * glue_length, 0);
cptr = ZSTR_VAL(str) + ZSTR_LEN(str);
*cptr = 0;
do {
if (*strptr) {
cptr -= ZSTR_LEN(*strptr);
memcpy(cptr, ZSTR_VAL(*strptr), ZSTR_LEN(*strptr));
zend_string_release(*strptr);
} else {
char *oldPtr = cptr;
char oldVal = *cptr;
zend_long val = ((zend_long *) (strings + numelems))[strptr - strings];
cptr = zend_print_long_to_buf(cptr, val);
*oldPtr = oldVal;
}
cptr -= glue_length;
memcpy(cptr, glue, glue_length);
} while (--strptr > strings);
if (*strptr) {
memcpy(ZSTR_VAL(str), ZSTR_VAL(*strptr), ZSTR_LEN(*strptr));
zend_string_release(*strptr);
} else {
char *oldPtr = cptr;
char oldVal = *cptr;
zend_print_long_to_buf(cptr, ((zend_long *) (strings + numelems))[strptr - strings]);
*oldPtr = oldVal;
}
efree(strings);
RETURN_NEW_STR(str);
}
/**
* Convert dash/underscored texts returning camelized
* (an optional delimiter can be specified as character-mask as for ltrim)
*/
void zephir_camelize(zval *return_value, const zval *str, const zval *delimiter)
{
int i, len, delim_len, pre_del = 1;
smart_str camelize_str = {0};
char *marker, ch, *delim;
if (UNEXPECTED(Z_TYPE_P(str) != IS_STRING)) {
zend_error(E_WARNING, "Invalid arguments supplied for camelize()");
RETURN_EMPTY_STRING();
}
if (delimiter == NULL || Z_TYPE_P(delimiter) == IS_NULL) {
delim = "_-";
delim_len = 2;
} else if (Z_TYPE_P(delimiter) == IS_STRING && Z_STRLEN_P(delimiter) > 0) {
delim = Z_STRVAL_P(delimiter);
delim_len = Z_STRLEN_P(delimiter);
} else {
zend_error(E_WARNING, "The second argument passed to the camelize() must be a string containing at least one character");
RETURN_EMPTY_STRING();
}
marker = Z_STRVAL_P(str);
len = Z_STRLEN_P(str);
for (i = 0; i < len; i++) {
ch = marker[i];
if (memchr(delim, ch, delim_len)) {
pre_del = 1;
continue;
}
if (pre_del == 1) {
smart_str_appendc(&camelize_str, toupper(ch));
pre_del = 0;
} else {
smart_str_appendc(&camelize_str, tolower(ch));
}
}
smart_str_0(&camelize_str);
if (camelize_str.s) {
RETURN_STR(camelize_str.s);
} else {
RETURN_EMPTY_STRING();
}
}
/**
* Convert a camelized to a dash/underscored texts (a single-character optional delimiter can be specified)
*/
void zephir_uncamelize(zval *return_value, const zval *str, const zval *delimiter)
{
unsigned int i;
smart_str uncamelize_str = {0};
char *marker, ch, delim;
if (Z_TYPE_P(str) != IS_STRING) {
zend_error(E_WARNING, "Invalid arguments supplied for uncamelize()");
RETURN_EMPTY_STRING();
}
if (delimiter == NULL || Z_TYPE_P(delimiter) == IS_NULL) {
delim = '_';
} else if (Z_TYPE_P(delimiter) == IS_STRING && Z_STRLEN_P(delimiter) == 1) {
delim = *(Z_STRVAL_P(delimiter));
} else {
zend_error(E_WARNING, "Second argument passed to the uncamelize() must be a string of one character");
RETURN_EMPTY_STRING();
}
marker = Z_STRVAL_P(str);
for (i = 0; i < Z_STRLEN_P(str); i++) {
ch = *marker;
if (ch == '\0') {
break;
}
if (ch >= 'A' && ch <= 'Z') {
if (i > 0) {
smart_str_appendc(&uncamelize_str, delim);
}
smart_str_appendc(&uncamelize_str, (*marker) + 32);
} else {
smart_str_appendc(&uncamelize_str, (*marker));
}
marker++;
}
smart_str_0(&uncamelize_str);
if (uncamelize_str.s) {
RETURN_STR(uncamelize_str.s);
} else {
RETURN_EMPTY_STRING();
}
}
/**
* Check if a string is contained into another
*/
int zephir_memnstr(const zval *haystack, const zval *needle ZEPHIR_DEBUG_PARAMS)
{
if (Z_TYPE_P(haystack) != IS_STRING || Z_TYPE_P(needle) != IS_STRING) {
#ifndef ZEPHIR_RELEASE
zend_error(E_WARNING, "Invalid arguments supplied for memnstr in %s on line %d", file, line);
#else
zend_error(E_WARNING, "Invalid arguments supplied for memnstr()");
#endif
return 0;
}
if (Z_STRLEN_P(haystack) >= Z_STRLEN_P(needle)) {
return php_memnstr(Z_STRVAL_P(haystack), Z_STRVAL_P(needle), Z_STRLEN_P(needle), Z_STRVAL_P(haystack) + Z_STRLEN_P(haystack)) ? 1 : 0;
}
return 0;
}
/**
* Check if a string is contained into another
*/
int zephir_memnstr_str(const zval *haystack, char *needle, unsigned int needle_length ZEPHIR_DEBUG_PARAMS)
{
if (Z_TYPE_P(haystack) != IS_STRING) {
#ifndef ZEPHIR_RELEASE
zend_error(E_WARNING, "Invalid arguments supplied for memnstr in %s on line %d", file, line);
#else
zend_error(E_WARNING, "Invalid arguments supplied for memnstr()");
#endif
return 0;
}
if (Z_STRLEN_P(haystack) >= needle_length) {
return php_memnstr(Z_STRVAL_P(haystack), needle, needle_length, Z_STRVAL_P(haystack) + Z_STRLEN_P(haystack)) ? 1 : 0;
}
return 0;
}
/**
* Fast call to explode php function
*/
void zephir_fast_explode(zval *return_value, zval *delimiter, zval *str, long limit)
{
if (UNEXPECTED(Z_TYPE_P(str) != IS_STRING || Z_TYPE_P(delimiter) != IS_STRING)) {
zend_error(E_WARNING, "Invalid arguments supplied for explode()");
RETURN_EMPTY_STRING();
}
array_init(return_value);
php_explode(Z_STR_P(delimiter), Z_STR_P(str), return_value, limit);
}
/**
* Fast call to explode php function
*/
void zephir_fast_explode_str(zval *return_value, const char *delim, int delim_length, zval *str, long limit)
{
zend_string *delimiter;
if (UNEXPECTED(Z_TYPE_P(str) != IS_STRING)) {
zend_error(E_WARNING, "Invalid arguments supplied for explode()");
RETURN_EMPTY_STRING();
}
delimiter = zend_string_init(delim, delim_length, 0);
array_init(return_value);
php_explode(delimiter, Z_STR_P(str), return_value, limit);
zend_string_free(delimiter);
}
/**
* Immediate function resolution for strpos function
*/
void zephir_fast_strpos(zval *return_value, const zval *haystack, const zval *needle, unsigned int offset)
{
const char *found = NULL;
if (UNEXPECTED(Z_TYPE_P(haystack) != IS_STRING || Z_TYPE_P(needle) != IS_STRING)) {
ZVAL_NULL(return_value);
zend_error(E_WARNING, "Invalid arguments supplied for strpos()");
return;
}
if (offset > Z_STRLEN_P(haystack)) {
ZVAL_NULL(return_value);
zend_error(E_WARNING, "Offset not contained in string");
return;
}
if (!Z_STRLEN_P(needle)) {
ZVAL_NULL(return_value);
zend_error(E_WARNING, "Empty delimiter");
return;
}
found = php_memnstr(Z_STRVAL_P(haystack)+offset, Z_STRVAL_P(needle), Z_STRLEN_P(needle), Z_STRVAL_P(haystack) + Z_STRLEN_P(haystack));
if (found) {
ZVAL_LONG(return_value, found - Z_STRVAL_P(haystack));
} else {
ZVAL_BOOL(return_value, 0);
}
}
/**
* Immediate function resolution for strpos function
*/
void zephir_fast_strpos_str(zval *return_value, const zval *haystack, char *needle, unsigned int needle_length)
{
const char *found = NULL;
if (UNEXPECTED(Z_TYPE_P(haystack) != IS_STRING)) {
ZVAL_NULL(return_value);
zend_error(E_WARNING, "Invalid arguments supplied for strpos()");
return;
}
found = php_memnstr(Z_STRVAL_P(haystack), needle, needle_length, Z_STRVAL_P(haystack) + Z_STRLEN_P(haystack));
if (found) {
ZVAL_LONG(return_value, found - Z_STRVAL_P(haystack));
} else {
ZVAL_BOOL(return_value, 0);
}
}
/**
* Fast call to PHP trim() function
*/
void zephir_fast_trim(zval *return_value, zval *str, zval *charlist, int where)
{
zval copy;
int use_copy = 0;
zend_string *trimmed;
if (Z_TYPE_P(str) != IS_STRING) {
use_copy = zend_make_printable_zval(str, ©);
if (use_copy) {
str = ©
}
}
if (charlist && Z_TYPE_P(charlist) == IS_STRING) {
trimmed = php_trim(Z_STR_P(str), Z_STRVAL_P(charlist), Z_STRLEN_P(charlist), where);
} else {
trimmed = php_trim(Z_STR_P(str), NULL, 0, where);
}
ZVAL_STR(return_value, trimmed);
if (use_copy) {
zval_dtor(©);
}
}
/* {{{ php_char_to_str_ex This function is subject to version 3.01 of the PHP license
*/
static zend_string* php_char_to_str_ex(zend_string *str, char from, char *to, size_t to_len, int case_sensitivity, zend_long *replace_count)
{
zend_string *result;
size_t char_count = 0;
char lc_from = 0;
char *source, *target, *source_end= ZSTR_VAL(str) + ZSTR_LEN(str);
if (case_sensitivity) {
char *p = ZSTR_VAL(str), *e = p + ZSTR_LEN(str);
while ((p = memchr(p, from, (e - p)))) {
char_count++;
p++;
}
} else {
lc_from = tolower(from);
for (source = ZSTR_VAL(str); source < source_end; source++) {
if (tolower(*source) == lc_from) {
char_count++;
}
}
}
if (char_count == 0) {
return zend_string_copy(str);
}
if (to_len > 0) {
result = zend_string_safe_alloc(char_count, to_len - 1, ZSTR_LEN(str), 0);
} else {
result = zend_string_alloc(ZSTR_LEN(str) - char_count, 0);
}
target = ZSTR_VAL(result);
if (case_sensitivity) {
char *p = ZSTR_VAL(str), *e = p + ZSTR_LEN(str), *s = ZSTR_VAL(str);
while ((p = memchr(p, from, (e - p)))) {
memcpy(target, s, (p - s));
target += p - s;
memcpy(target, to, to_len);
target += to_len;
p++;
s = p;
if (replace_count) {
*replace_count += 1;
}
}
if (s < e) {
memcpy(target, s, (e - s));
target += e - s;
}
} else {
for (source = ZSTR_VAL(str); source < source_end; source++) {
if (tolower(*source) == lc_from) {
if (replace_count) {
*replace_count += 1;
}
memcpy(target, to, to_len);
target += to_len;
} else {
*target = *source;
target++;
}
}
}
*target = 0;
return result;
}
/* }}} */
/* {{{ php_str_to_str_ex This function is subject to version 3.01 of the PHP license
*/
static zend_string *php_str_to_str_ex(zend_string *haystack,
char *needle, size_t needle_len, char *str, size_t str_len, zend_long *replace_count)
{
zend_string *new_str;
if (needle_len < ZSTR_LEN(haystack)) {
char *end;
char *e, *s, *p, *r;
if (needle_len == str_len) {
new_str = NULL;
end = ZSTR_VAL(haystack) + ZSTR_LEN(haystack);
for (p = ZSTR_VAL(haystack); (r = (char*)php_memnstr(p, needle, needle_len, end)); p = r + needle_len) {
if (!new_str) {
new_str = zend_string_init(ZSTR_VAL(haystack), ZSTR_LEN(haystack), 0);
}
memcpy(ZSTR_VAL(new_str) + (r - ZSTR_VAL(haystack)), str, str_len);
(*replace_count)++;
}
if (!new_str) {
goto nothing_todo;
}
return new_str;
} else {
size_t count = 0;
char *o = ZSTR_VAL(haystack);
char *n = needle;
char *endp = o + ZSTR_LEN(haystack);
while ((o = (char*)php_memnstr(o, n, needle_len, endp))) {
o += needle_len;
count++;
}
if (count == 0) {
/* Needle doesn't occur, shortcircuit the actual replacement. */
goto nothing_todo;
}
new_str = zend_string_alloc(count * (str_len - needle_len) + ZSTR_LEN(haystack), 0);
e = s = ZSTR_VAL(new_str);
end = ZSTR_VAL(haystack) + ZSTR_LEN(haystack);
for (p = ZSTR_VAL(haystack); (r = (char*)php_memnstr(p, needle, needle_len, end)); p = r + needle_len) {
memcpy(e, p, r - p);
e += r - p;
memcpy(e, str, str_len);
e += str_len;
(*replace_count)++;
}
if (p < end) {
memcpy(e, p, end - p);
e += end - p;
}
*e = '\0';
return new_str;
}
} else if (needle_len > ZSTR_LEN(haystack) || memcmp(ZSTR_VAL(haystack), needle, ZSTR_LEN(haystack))) {
nothing_todo:
return zend_string_copy(haystack);
} else {
new_str = zend_string_init(str, str_len, 0);
(*replace_count)++;
return new_str;
}
}
/* }}} */
/**
* Immediate function resolution for str_replace function
*/
void zephir_fast_str_replace(zval *return_value_ptr, zval *search, zval *replace, zval *subject)
{
zval replace_copy, search_copy;
int copy_replace = 0, copy_search = 0;
zend_long replace_count = 0;
if (Z_TYPE_P(subject) != IS_STRING) {
ZVAL_NULL(return_value_ptr);
zend_error(E_WARNING, "Invalid arguments supplied for str_replace()");
return;
}
/**
* Fallback to userland function if the first parameter is an array
*/
if (Z_TYPE_P(search) == IS_ARRAY) {
do {
zval *params[] = { search, replace, subject };
ZVAL_NULL(return_value_ptr);
zephir_call_func_aparams(return_value_ptr, "str_replace", sizeof("str_replace")-1, NULL, 0, 3, params);
return;
} while(0);
}
if (Z_TYPE_P(replace) != IS_STRING) {
copy_replace = zend_make_printable_zval(replace, &replace_copy);
if (copy_replace) {
replace = &replace_copy;
}
}
if (Z_TYPE_P(search) != IS_STRING) {
copy_search = zend_make_printable_zval(search, &search_copy);
if (copy_search) {
search = &search_copy;
}
}
if (Z_STRLEN_P(subject) == 0) {
ZVAL_STRINGL(return_value_ptr, "", 0);
return;
}