<?php
/*
 * Fix Greek Search Plugin by Efthimios Mavrogeorgiadis for Joomla! 1.5.x - Version 1.0.0
 * Copyright (c) 2008 Efthimios Mavrogeorgiadis. All rights reserved.
 * Released under the GNU/GPL license: http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 */

// no direct access
defined( '_JEXEC' ) or die( 'Restricted access' );

$file =  JPATH_SITE . DS . 'libraries' . DS . 'joomla' . DS . 'utilities' . DS . 'string.php';
$splitter = 'function stristr($str, $search)';
$firstline = 'if (extension_loaded(\'mbstring\')';

$theData = readFileToChange($file, $firstline);
$parts = explode($splitter, $theData);
$parts[0] .= 'function stristr_regex($str, $search){return preg_match(\'/\'.str_replace(\'/\', \'\/\', $search).\'/\', $str);}';
$fullcode = implode($splitter, $parts);
eval($fullcode);

$file =  JPATH_SITE . DS . 'administrator' . DS . 'components' . DS . 'com_search' . DS. 'helpers' . DS . 'search.php';
$splitter = 'function checkNoHtml($object, $searchTerm, $fields)';
$firstline = 'class SearchHelper';

$theData = readFileToChange($file, $firstline);
$parts = explode($splitter, $theData);
$fullcode = 'function checkNoHtmlForRegex($object, $searchTerm, $fields)';
$fullcode .= str_replace('JString::stristr', 'JString::stristr_regex', substr($parts[1], 0, strpos($parts[1], '/**') - 1));
eval($fullcode);

$searchfiles = array('categories', 'contacts', 'content', 'newsfeeds', 'sections', 'weblinks');
foreach ($searchfiles as $s) {
    eval(getSearchFile($s));
}

function readFileToChange($file, $firstline) {
    $fh = fopen($file, 'r');
    $theData = fread($fh, filesize($file));
    fclose($fh);
    $theData = preg_replace('/^(.|\n)+?'.quotemeta($firstline).'/', $firstline, $theData);
    return $theData;
}

function getSearchFile($filename) {
    $file = JPATH_SITE . DS . 'plugins' . DS . 'search' . DS . $filename . '.php';
    $firstline = '$mainframe';
    $theData = readFileToChange($file, $firstline);
    $theData = str_replace('$searchText = $text;', '$searchText = $text = turnTextIntoRegex($text);', $theData);
    $theData = str_replace('$text = trim( $text );', '$text = trim( $text );$text = turnTextIntoRegex($text);', $theData);
    $theData = str_replace('LIKE', 'REGEXP', $theData);
    $theData = str_replace('searchHelper::checkNoHTML', 'checkNoHtmlForRegex', $theData);
    $theData = str_replace("'%'", "''", $theData);
    return $theData;
}

function turnTextIntoRegex($text) {
    if (!$text) return '';
    $a = array(
               'Α'  =>  '(Α|Ά|α|ά)',
               'Ά'  =>  '(Α|Ά|α|ά)',
               'α'  =>  '(Α|Ά|α|ά)',
               'ά'  =>  '(Α|Ά|α|ά)',
               'Β'  =>  '(Β|β)',
               'β'  =>  '(Β|β)',
               'Γ'  =>  '(Γ|γ)',
               'γ'  =>  '(Γ|γ)',
               'Δ'  =>  '(Δ|δ)',
               'δ'  =>  '(Δ|δ)',
               'Ε'  =>  '(Ε|Έ|ε|έ)',
               'Έ'  =>  '(Ε|Έ|ε|έ)',
               'ε'  =>  '(Ε|Έ|ε|έ)',
               'έ'  =>  '(Ε|Έ|ε|έ)',
               'Ζ'  =>  '(Ζ|ζ)',
               'ζ'  =>  '(Ζ|ζ)',
               'Η'  =>  '(Η|Ή|η|ή)',
               'Ή'  =>  '(Η|Ή|η|ή)',
               'η'  =>  '(Η|Ή|η|ή)',
               'ή'  =>  '(Η|Ή|η|ή)',
               'Θ'  =>  '(Θ|θ)',
               'θ'  =>  '(Θ|θ)',
               'Ι'  =>  '(Ι|Ί|Ϊ|ι|ί|ϊ|ΐ)',
               'Ί'  =>  '(Ι|Ί|Ϊ|ι|ί|ϊ|ΐ)',
               'Ϊ'  =>  '(Ι|Ί|Ϊ|ι|ί|ϊ|ΐ)',
               'ι'  =>  '(Ι|Ί|Ϊ|ι|ί|ϊ|ΐ)',
               'ί'  =>  '(Ι|Ί|Ϊ|ι|ί|ϊ|ΐ)',
               'ϊ'  =>  '(Ι|Ί|Ϊ|ι|ί|ϊ|ΐ)',
               'ΐ'  =>  '(Ι|Ί|Ϊ|ι|ί|ϊ|ΐ)',
               'Κ'  =>  '(Κ|κ)',
               'κ'  =>  '(Κ|κ)',
               'Λ'  =>  '(Λ|λ)',
               'λ'  =>  '(Λ|λ)',
               'Μ'  =>  '(Μ|μ)',
               'μ'  =>  '(Μ|μ)',
               'Ν'  =>  '(Ν|ν)',
               'ν'  =>  '(Ν|ν)',
               'Ξ'  =>  '(Ξ|ξ)',
               'ξ'  =>  '(Ξ|ξ)',
               'Ο'  =>  '(Ο|Ό|ο|ό)',
               'Ό'  =>  '(Ο|Ό|ο|ό)',
               'ο'  =>  '(Ο|Ό|ο|ό)',
               'ό'  =>  '(Ο|Ό|ο|ό)',
               'Π'  =>  '(Π|π)',
               'π'  =>  '(Π|π)',
               'Ρ'  =>  '(Ρ|ρ)',
               'ρ'  =>  '(Ρ|ρ)',
               'Σ'  =>  '(Σ|σ|ς)',
               'σ'  =>  '(Σ|σ|ς)',
               'ς'  =>  '(Σ|σ|ς)',
               'Τ'  =>  '(Τ|τ)',
               'τ'  =>  '(Τ|τ)',
               'Υ'  =>  '(Υ|Ύ|Ϋ|υ|ύ|ϋ|ΰ)',
               'Ύ'  =>  '(Υ|Ύ|Ϋ|υ|ύ|ϋ|ΰ)',
               'Ϋ'  =>  '(Υ|Ύ|Ϋ|υ|ύ|ϋ|ΰ)',
               'υ'  =>  '(Υ|Ύ|Ϋ|υ|ύ|ϋ|ΰ)',
               'ύ'  =>  '(Υ|Ύ|Ϋ|υ|ύ|ϋ|ΰ)',
               'ϋ'  =>  '(Υ|Ύ|Ϋ|υ|ύ|ϋ|ΰ)',
               'ΰ'  =>  '(Υ|Ύ|Ϋ|υ|ύ|ϋ|ΰ)',
               'Φ'  =>  '(Φ|φ)',
               'φ'  =>  '(Φ|φ)',
               'Χ'  =>  '(Χ|χ)',
               'χ'  =>  '(Χ|χ)',
               'Ψ'  =>  '(Ψ|ψ)',
               'ψ'  =>  '(Ψ|ψ)',
               'Ω'  =>  '(Ω|Ώ|ω|ώ)',
               'Ώ'  =>  '(Ω|Ώ|ω|ώ)',
               'ω'  =>  '(Ω|Ώ|ω|ώ)',
               'ώ'  =>  '(Ω|Ώ|ω|ώ)',
    );
    $t = array();
    for ($i = 0; $i < mb_strlen($text); $i++) {
        if (array_key_exists(mb_substr($text, $i, 1), $a)) $t[] = $a[mb_substr($text, $i, 1)];
        else $t[] = mb_substr($text, $i, 1);
    }
    return implode('', $t);
}

?>