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55 lines
1.6 KiB
55 lines
1.6 KiB
<?php
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/**
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* Smarty plugin
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*
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* @package Smarty
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* @subpackage PluginsModifier
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*/
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/**
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* Smarty regex_replace modifier plugin
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* Type: modifier
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* Name: regex_replace
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* Purpose: regular expression search/replace
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*
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* @link http://smarty.php.net/manual/en/language.modifier.regex.replace.php
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* regex_replace (Smarty online manual)
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* @author Monte Ohrt <monte at ohrt dot com>
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*
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* @param string $string input string
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* @param string|array $search regular expression(s) to search for
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* @param string|array $replace string(s) that should be replaced
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* @param int $limit the maximum number of replacements
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*
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* @return string
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*/
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function smarty_modifier_regex_replace($string, $search, $replace, $limit = -1)
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{
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if (is_array($search)) {
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foreach ($search as $idx => $s) {
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$search[ $idx ] = _smarty_regex_replace_check($s);
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}
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} else {
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$search = _smarty_regex_replace_check($search);
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}
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return preg_replace($search, $replace, $string, $limit);
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}
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/**
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* @param string $search string(s) that should be replaced
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*
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* @return string
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* @ignore
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*/
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function _smarty_regex_replace_check($search)
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{
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// null-byte injection detection
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// anything behind the first null-byte is ignored
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if (($pos = strpos($search, "\0")) !== false) {
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$search = substr($search, 0, $pos);
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}
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// remove eval-modifier from $search
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if (preg_match('!([a-zA-Z\s]+)$!s', $search, $match) && (strpos($match[ 1 ], 'e') !== false)) {
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$search = substr($search, 0, -strlen($match[ 1 ])) . preg_replace('![e\s]+!', '', $match[ 1 ]);
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}
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return $search;
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}
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