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<?php
/*************************
  Coppermine Photo Gallery
  ************************
  Copyright (c) 2003-2005 Coppermine Dev Team
  v1.1 originaly written by Gregory DEMAR

  This program is free software; you can redistribute it and/or modify
  it under the terms of the GNU General Public License as published by
  the Free Software Foundation; either version 2 of the License, or
  (at your option) any later version.
  ********************************************
  Coppermine version: 1.3.3
  $Source: /cvsroot/coppermine/stable/include/search.inc.php,v $
  $Revision: 1.6 $
  $Author: gaugau $
  $Date: 2005/04/19 03:17:11 $
**********************************************/

/**
 * functions_search.php
 *
 *                               -------------------
 *
 *      begin                : Wed Sep 05 2001
 *
 *      copyright            : (C) 2001 The phpBB Group
 *
 *      email                : support@phpbb.com
 *
 *
 *
 *      $Id: search.inc.php,v 1.6 2005/04/19 03:17:11 gaugau Exp $
 */

// encoding match for workaround

$multibyte_charset = 'utf-8, big5, shift_jis, euc-kr, gb2312';

$charset = $CONFIG['charset'] == 'language file' ? $GLOBALS['lang_charset'] : $CONFIG['charset'];

$mb_charset = stristr($multibyte_charset, $charset);

function clean_words(&$entry, $mb_charset)
{
    global $charset, $multibyte_charset;

    static $drop_char_match = array('^', '$', '&', '(', ')', '<', '>', '`', '\'', '"', '|', ',', '@', '_', '?', '%', '~', '.', '[', ']', '{', '}', ':', '\\', '/', '=', '#', '\'', ';', '!');

    static $drop_char_replace = array(' ', ' ', ' ', ' ', ' ', ' ', ' ', '', '', ' ', ' ', ' ', ' ', '', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ', ' ' , ' ', ' ', ' ', ' ', ' ', ' ');

    $entry = ' ' . strtolower($entry) . ' ';
    // Replace line endings by a space
    $entry = preg_replace('/[\n\r]/is', ' ', $entry);
    // + and - becomes and & not
    $entry = str_replace(' +', ' and ', $entry);

    $entry = str_replace(' -', ' not ', $entry);

    // Filter out strange characters like ^, $, &, change "it's" to "its"

    if (!$mb_charset) for($i = 0; $i < count($drop_char_match); $i++) {
        $entry = str_replace($drop_char_match[$i], $drop_char_replace[$i], $entry);
    }
    // 'words' that consist of <3 or >20 characters are removed.
    // $entry = preg_replace('/\b([a-z0-9]{1,2}|[a-z0-9]{21,})\b/',' ', $entry);
    return $entry;
}

if (defined('USE_MYSQL_SEARCH') && $query_all) {
    // If using MySQL 4 or above we use boolean search
    $mysql_version = mysql_get_server_info();

    if ($mysql_version >= '4') {
        $boolean_mode = 'IN BOOLEAN MODE';
    } else {
        $boolean_mode = '';
    }

    $result = db_query("SELECT COUNT(*) FROM {$CONFIG['TABLE_PICTURES']} WHERE MATCH(filename, title, caption, keywords) AGAINST ('$search_string' $boolean_mode) AND approved = 'YES' $ALBUM_SET");

    $nbEnr = mysql_fetch_array($result);

    $count = $nbEnr[0];

    mysql_free_result($result);

    if ($select_columns != '*') $select_columns .= ', title, caption';

    $result = db_query("SELECT $select_columns FROM {$CONFIG['TABLE_PICTURES']} WHERE MATCH(filename, title, caption, keywords) AGAINST ('$search_string' $boolean_mode) AND approved = 'YES' $ALBUM_SET $limit");

    $rowset = db_fetch_rowset($result);

    mysql_free_result($result);

    if ($set_caption) foreach ($rowset as $key => $row) {
        $caption = $rowset[$key]['title'] ? "<span class=\"thumb_title\">" . $rowset[$key]['title'] . "</span>" : '';

        if ($CONFIG['caption_in_thumbview']) {
            $caption .= $rowset[$key]['caption'] ? "<span class=\"thumb_caption\">" . bb_decode($rowset[$key]['caption']) . "</span>" : '';
        }

        $rowset[$key]['caption_text'] = $caption;
    }
} elseif ($search_string != '') {
    $split_search = array();

    $split_search = split(' ', clean_words($search_string, $mb_charset));

    $current_match_type = 'and';

    $pic_set = '';

    for($i = 0; $i < count($split_search); $i++) {
        switch ($split_search[$i]) {
            case 'and':

                $current_match_type = 'and';

                break;

            case 'or':

                $current_match_type = 'or';

                break;

            case 'not':

                $current_match_type = 'not';

                break;

            default:

                if (empty($split_search[$i])) break;

                $match_word = '%' . str_replace('*', '%', addslashes($split_search[$i])) . '%';

                $match_keyword = '% ' . str_replace('*', '%', addslashes($split_search[$i])) . ' %';

                $sql = "SELECT pid " . "FROM {$CONFIG['TABLE_PICTURES']} " . "WHERE CONCAT(' ', keywords, ' ') LIKE '$match_keyword' ";

                if ($query_all) $sql .= "OR filename LIKE '$match_word' " . "OR title LIKE '$match_word' " . "OR caption LIKE '$match_word' " . "OR user1 LIKE '$match_word' " . "OR user2 LIKE '$match_word' " . "OR user3 LIKE '$match_word' " . "OR user4 LIKE '$match_word' ";

                $result = db_query($sql);

                $set = '';

                while ($row = mysql_fetch_array($result)) {
                    $set .= $row['pid'] . ',';
                } // while
                if (empty($set)) {
                    $set = "'',";
                }

                if (empty($pic_set)) {
                    if ($current_match_type == 'not') {
                        $pic_set .= ' pid not in (' . substr($set, 0, -1) . ') ';
                    } else {
                        $pic_set .= ' pid in (' . substr($set, 0, -1) . ') ';
                    }
                } else {
                    if ($current_match_type == 'not') {
                        $pic_set .= ' and pid not in (' . substr($set, 0, -1) . ') ';
                    } else {
                        $pic_set .= ' ' . $current_match_type . ' pid in (' . substr($set, 0, -1) . ') ';
                    }
                }

                mysql_free_result($result);

                $current_match_type = 'and';
        }
    }

    if (!empty($pic_set)) {
        $sql = "SELECT COUNT(*) " . "FROM {$CONFIG['TABLE_PICTURES']} " . "WHERE ($pic_set) " . "AND approved = 'YES' " . "$ALBUM_SET";

        $result = db_query($sql);

        $nbEnr = mysql_fetch_array($result);

        $count = $nbEnr[0];

        mysql_free_result($result);

        if ($select_columns != '*') $select_columns .= ', title, caption';

        $sql = "SELECT $select_columns " . "FROM {$CONFIG['TABLE_PICTURES']} " . "WHERE ($pic_set) " . "AND approved = 'YES' " . "$ALBUM_SET $limit";

        $result = db_query($sql);

        $rowset = db_fetch_rowset($result);

        mysql_free_result($result);

        if ($set_caption) foreach ($rowset as $key => $row) {
            $caption = $rowset[$key]['title'] ? "<span class=\"thumb_title\">" . $rowset[$key]['title'] . "</span>" : '';

            if ($CONFIG['caption_in_thumbview']) {
                $caption .= $rowset[$key]['caption'] ? "<span class=\"thumb_caption\">" . bb_decode($rowset[$key]['caption']) . "</span>" : '';
            }

            $rowset[$key]['caption_text'] = $caption;
        }
    } else {
        $count = 0;

        $rowset = array();
    }
} else {
    $count = 0;

    $rowset = array();
}

?>