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administrator/components/com_search/helpers/search.php
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294
administrator/components/com_search/helpers/search.php
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<?php
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/**
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* @package Joomla.Administrator
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* @subpackage com_search
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*
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* @copyright Copyright (C) 2005 - 2013 Open Source Matters, Inc. All rights reserved.
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* @license GNU General Public License version 2 or later; see LICENSE.txt
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*/
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defined('_JEXEC') or die;
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/**
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* Search component helper.
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*
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* @package Joomla.Administrator
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* @subpackage com_search
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* @since 1.5
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*/
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class SearchHelper
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{
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/**
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* Configure the Linkbar.
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*
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* @param string The name of the active view.
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* @since 1.6
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*/
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public static function addSubmenu($vName)
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{
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// Not required.
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}
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/**
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* Gets a list of the actions that can be performed.
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*
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* @return JObject
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*/
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public static function getActions()
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{
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$user = JFactory::getUser();
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$result = new JObject;
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$assetName = 'com_search';
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$actions = JAccess::getActions($assetName);
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foreach ($actions as $action)
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{
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$result->set($action->name, $user->authorise($action->name, $assetName));
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}
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return $result;
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}
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public static function santiseSearchWord(&$searchword, $searchphrase)
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{
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$ignored = false;
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$lang = JFactory::getLanguage();
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$tag = $lang->getTag();
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$search_ignore = $lang->getIgnoredSearchWords();
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// Deprecated in 1.6 use $lang->getIgnoredSearchWords instead
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$ignoreFile = $lang->getLanguagePath() . '/' . $tag . '/' . $tag . '.ignore.php';
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if (file_exists($ignoreFile))
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{
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include $ignoreFile;
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}
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// Check for words to ignore
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$aterms = explode(' ', JString::strtolower($searchword));
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// First case is single ignored word
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if (count($aterms) == 1 && in_array(JString::strtolower($searchword), $search_ignore))
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{
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$ignored = true;
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}
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// Filter out search terms that are too small
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$lower_limit = $lang->getLowerLimitSearchWord();
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foreach ($aterms as $aterm)
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{
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if (JString::strlen($aterm) < $lower_limit)
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{
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$search_ignore[] = $aterm;
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}
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}
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// Next is to remove ignored words from type 'all' or 'any' (not exact) searches with multiple words
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if (count($aterms) > 1 && $searchphrase != 'exact')
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{
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$pruned = array_diff($aterms, $search_ignore);
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$searchword = implode(' ', $pruned);
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}
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return $ignored;
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}
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/**
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* @since 1.5
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*/
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public static function limitSearchWord(&$searchword)
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{
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$restriction = false;
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$lang = JFactory::getLanguage();
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// Limit searchword to a maximum of characters
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$upper_limit = $lang->getUpperLimitSearchWord();
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if (JString::strlen($searchword) > $upper_limit)
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{
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$searchword = JString::substr($searchword, 0, $upper_limit - 1);
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$restriction = true;
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}
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// Searchword must contain a minimum of characters
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if ($searchword && JString::strlen($searchword) < $lang->getLowerLimitSearchWord())
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{
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$searchword = '';
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$restriction = true;
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}
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return $restriction;
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}
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/**
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* Logs a search term
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*
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* @param string $search_term The term being searched
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*
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* @return void
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*
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* @since 1.5
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* @deprecated 4.0 Use JSearchHelper::logSearch() instead
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*/
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public static function logSearch($search_term)
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{
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JLog::add(__METHOD__ . '() is deprecated, use JSearchHelper::logSearch() instead.', JLog::WARNING, 'deprecated');
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JSearchHelper::logSearch($search_term, 'com_search');
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}
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/**
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* Prepares results from search for display
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*
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* @param string $text The source string
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* @param string $searchword The searchword to select around
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*
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* @return string
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*
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* @since 1.5
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*/
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public static function prepareSearchContent($text, $searchword)
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{
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// Strips tags won't remove the actual jscript
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$text = preg_replace("'<script[^>]*>.*?</script>'si", "", $text);
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$text = preg_replace('/{.+?}/', '', $text);
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// $text = preg_replace('/<a\s+.*?href="([^"]+)"[^>]*>([^<]+)<\/a>/is','\2', $text);
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// Replace line breaking tags with whitespace
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$text = preg_replace("'<(br[^/>]*?/|hr[^/>]*?/|/(div|h[1-6]|li|p|td))>'si", ' ', $text);
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return self::_smartSubstr(strip_tags($text), $searchword);
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}
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/**
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* Checks an object for search terms (after stripping fields of HTML)
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*
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* @param object $object The object to check
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* @param string $searchTerm Search words to check for
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* @param array $fields List of object variables to check against
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*
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* @return boolean True if searchTerm is in object, false otherwise
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*/
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public static function checkNoHtml($object, $searchTerm, $fields)
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{
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$searchRegex = array(
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'#<script[^>]*>.*?</script>#si',
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'#<style[^>]*>.*?</style>#si',
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'#<!.*?(--|]])>#si',
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'#<[^>]*>#i'
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);
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$terms = explode(' ', $searchTerm);
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if (empty($fields))
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{
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return false;
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}
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foreach ($fields as $field)
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{
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if (!isset($object->$field))
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{
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continue;
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}
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$text = self::remove_accents($object->$field);
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foreach ($searchRegex as $regex)
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{
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$text = preg_replace($regex, '', $text);
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}
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foreach ($terms as $term)
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{
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$term = self::remove_accents($term);
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if (JString::stristr($text, $term) !== false)
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{
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return true;
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}
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}
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}
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return false;
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}
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/**
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* Transliterates given text to ASCII//TRANSLIT.
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* Simulates glibc transliteration style even if libiconv is used by PHP
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*
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* @param string $str String to remove accents from
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*
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* @return string
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*
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* @since 3.2
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*/
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public static function remove_accents($str)
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{
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setlocale(LC_ALL, "en_GB.UTF-8");
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$str = iconv("UTF-8", "ASCII//TRANSLIT//IGNORE", $str);
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//TODO: remove other prefixes as well?
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return preg_replace("/[\"'^]([a-z])/ui", '\1', $str);
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}
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/**
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* returns substring of characters around a searchword
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*
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* @param string $text The source string
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* @param integer $searchword Number of chars to return
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*
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* @return string
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*
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* @since 1.5
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*/
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public static function _smartSubstr($text, $searchword)
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{
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$lang = JFactory::getLanguage();
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$length = $lang->getSearchDisplayedCharactersNumber();
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$ltext = self::remove_accents($text);
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$textlen = JString::strlen($ltext);
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$lsearchword = JString::strtolower(self::remove_accents($searchword));
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$wordfound = false;
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$pos = 0;
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while ($wordfound === false && $pos < $textlen)
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{
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if (($wordpos = @JString::strpos($ltext, ' ', $pos + $length)) !== false)
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{
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$chunk_size = $wordpos - $pos;
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}
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else
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{
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$chunk_size = $length;
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}
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$chunk = JString::substr($ltext, $pos, $chunk_size);
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$wordfound = JString::strpos(JString::strtolower($chunk), $lsearchword);
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if ($wordfound === false)
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{
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$pos += $chunk_size + 1;
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}
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}
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if ($wordfound !== false)
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{
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return (($pos > 0) ? '... ' : '') . JString::substr($text, $pos, $chunk_size) . ' ...';
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}
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else
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{
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if (($wordpos = @JString::strpos($text, ' ', $length)) !== false)
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{
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return JString::substr($text, 0, $wordpos) . ' ...';
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}
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else
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{
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return JString::substr($text, 0, $length);
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}
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}
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}
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}
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