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<?php
/**
* Smarty shared plugin
*
* @package Smarty
* @subpackage PluginsShared
*/
if (!function_exists('smarty_mb_str_replace')) {
/**
* Multibyte string replace
*
* @param string|string[] $search the string to be searched
* @param string|string[] $replace the replacement string
* @param string $subject the source string
* @param int &$count number of matches found
*
* @return string replaced string
* @author Rodney Rehm
*/
function smarty_mb_str_replace($search, $replace, $subject, &$count = 0)
{
if (!is_array($search) && is_array($replace)) {
return false;
}
if (is_array($subject)) {
// call mb_replace for each single string in $subject
foreach ($subject as &$string) {
$string = smarty_mb_str_replace($search, $replace, $string, $c);
$count += $c;
}
} elseif (is_array($search)) {
if (!is_array($replace)) {
foreach ($search as &$string) {
$subject = smarty_mb_str_replace($string, $replace, $subject, $c);
$count += $c;
}
} else {
$n = max(count($search), count($replace));
while ($n--) {
$subject = smarty_mb_str_replace(current($search), current($replace), $subject, $c);
$count += $c;
next($search);
next($replace);
}
}
} else {
$mb_reg_charset = mb_regex_encoding();
// Check if mbstring regex is using UTF-8
$reg_is_unicode = !strcasecmp($mb_reg_charset, "UTF-8");
if(!$reg_is_unicode) {
// ...and set to UTF-8 if not
mb_regex_encoding("UTF-8");
}
// See if charset used by Smarty is matching one used by regex...
$current_charset = mb_regex_encoding();
$convert_result = (bool)strcasecmp(Smarty::$_CHARSET, $current_charset);
if($convert_result) {
// ...convert to it if not.
$subject = mb_convert_encoding($subject, $current_charset, Smarty::$_CHARSET);
$search = mb_convert_encoding($search, $current_charset, Smarty::$_CHARSET);
$replace = mb_convert_encoding($replace, $current_charset, Smarty::$_CHARSET);
}
$parts = mb_split(preg_quote($search), $subject ?? "") ?: array();
// If original regex encoding was not unicode...
if(!$reg_is_unicode) {
// ...restore original regex encoding to avoid breaking the system.
mb_regex_encoding($mb_reg_charset);
}
if($parts === false) {
// This exception is thrown if call to mb_split failed.
// Usually it happens, when $search or $replace are not valid for given mb_regex_encoding().
// There may be other cases for it to fail, please file an issue if you find a reproducible one.
throw new SmartyException("Source string is not a valid $current_charset sequence (probably)");
}
$count = count($parts) - 1;
$subject = implode($replace, $parts);
// Convert results back to charset used by Smarty, if needed.
if($convert_result) {
$subject = mb_convert_encoding($subject, Smarty::$_CHARSET, $current_charset);
}
}
return $subject;
}
}
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