WB 2.08.x

<?php

/**

 *

 * @category        frontend

 * @package         search

 * @author          WebsiteBaker Project

 * @copyright       2004-2009, Ryan Djurovich

 * @copyright       2009-2010, Website Baker Org. e.V.

 * @link			http://www.websitebaker2.org/

 * @license         http://www.gnu.org/licenses/gpl.html

 * @platform        WebsiteBaker 2.8.x

 * @requirements    PHP 4.3.4 and higher

 * @version         $Id: search_modext.php 1441 2011-04-09 23:04:22Z Luisehahne $

 * @filesource		$HeadURL: svn://isteam.dynxs.de/wb-archiv/branches/2.8.x/wb/search/search_modext.php $

 * @lastmodified    $Date: 2011-04-10 01:04:22 +0200 (Sun, 10 Apr 2011) $

 *

 */

// make the url-string for highlighting

function make_url_searchstring($search_match, $search_url_array) {

	$link = "";

	if ($search_match != 'exact') {

		$str = implode(" ", $search_url_array);

		$link = "?searchresult=1&sstring=".urlencode($str);

	} else {

		$str = str_replace(' ', '_', $search_url_array[0]);

		$link = "?searchresult=2&sstring=".urlencode($str);

	}

	return $link;

}

// make date and time for "last modified by... on ..."-string

function get_page_modified($page_modified_when) {

	global $TEXT;

	if($page_modified_when > 0) {

		$date = gmdate(DATE_FORMAT, $page_modified_when+TIMEZONE);

		$time = gmdate(TIME_FORMAT, $page_modified_when+TIMEZONE);

	} else {

		$date = $TEXT['UNKNOWN'].' '.$TEXT['DATE'];

		$time = $TEXT['UNKNOWN'].' '.$TEXT['TIME'];

	}

	return array($date, $time);

}

// make username and displayname for "last modified by... on ..."-string

function get_page_modified_by($page_modified_by, $users) {

	global $TEXT;

	if($page_modified_by>0) {

		$username = $users[$page_modified_by]['username'];

		$displayname = $users[$page_modified_by]['display_name'];

	} else {

		$username = "";

		$displayname = $TEXT['UNKNOWN'];

	}

	return array($username, $displayname);

}

// checks if _all_ searchwords matches

function is_all_matched($text, $search_words) {

	$all_matched = true;

	foreach ($search_words AS $word) {

		if(!preg_match('/'.$word.'/i', $text)) {

			$all_matched = false;

			break;

		}

	}

	return $all_matched;

}

// checks if _any_ of the searchwords matches

function is_any_matched($text, $search_words) {

	$any_matched = false;

	$word = '('.implode('|', $search_words).')';

	if(preg_match('/'.$word.'/i', $text)) {

		$any_matched = true;

	}

	return $any_matched;

}

// collects the matches from text in excerpt_array

function get_excerpts($text, $search_words, $max_excerpt_num) {

	$excerpt_array = FALSE;

	$word = '('.implode('|', $search_words).')';

	// start-sign: .!?; + INVERTED EXCLAMATION MARK - INVERTED QUESTION MARK - DOUBLE EXCLAMATION MARK - INTERROBANG - EXCLAMATION QUESTION MARK - QUESTION EXCLAMATION MARK - DOUBLE QUESTION MARK - HALFWIDTH IDEOGRAPHIC FULL STOP - IDEOGRAPHIC FULL STOP - IDEOGRAPHIC COMMA

	$p_start=".!?;"."\xC2\xA1"."\xC2\xBF"."\xE2\x80\xBC"."\xE2\x80\xBD"."\xE2\x81\x89"."\xE2\x81\x88"."\xE2\x81\x87"."\xEF\xBD\xA1"."\xE3\x80\x82"."\xE3\x80\x81";

	// stop-sign: .!?; + DOUBLE EXCLAMATION MARK - INTERROBANG - EXCLAMATION QUESTION MARK - QUESTION EXCLAMATION MARK - DOUBLE QUESTION MARK - HALFWIDTH IDEOGRAPHIC FULL STOP - IDEOGRAPHIC FULL STOP - IDEOGRAPHIC COMMA

	$p_stop=".!?;"."\xE2\x80\xBC"."\xE2\x80\xBD"."\xE2\x81\x89"."\xE2\x81\x88"."\xE2\x81\x87"."\xEF\xBD\xA1"."\xE3\x80\x82"."\xE3\x80\x81";

	// jump from match to match, get excerpt, stop if $max_excerpt_num is reached

	$match_array = $matches = array();

	$startpos = $wordpos = $endpos = 0; // although preg_match with u-switch handles unicode correctly, the ...pos-variables will count bytes (not chars) 

	while(preg_match("/$word/i", $text, $match_array, PREG_OFFSET_CAPTURE, $startpos)) {

		$wordpos = $match_array[0][1];

		$startpos = ($wordpos-200 < $endpos)?$endpos:$wordpos-200;

		$endpos = $wordpos+200;

		// look for better start position

		if(preg_match_all("/[$p_start]/u", substr($text, $startpos, $wordpos-$startpos), $matches, PREG_OFFSET_CAPTURE))

			$startpos += $matches[0][count($matches[0])-1][1]; // set startpos at last punctuation before word

		// look for better end position

		if(preg_match_all("/[$p_stop]/u", substr($text, $wordpos, $endpos-$wordpos), $matches, PREG_OFFSET_CAPTURE))

			$endpos = $wordpos+$matches[0][0][1]; // set endpos at first punctuation after word

		$match = substr($text, $startpos+1, $endpos-$startpos);

		if(!preg_match('/\b[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\./', $match)) // skip excerpts with email-addresses

			$excerpt_array[] = trim($match);

		if(count($excerpt_array)>=$max_excerpt_num) {

			$excerpt_array = array_unique($excerpt_array);

			if(count($excerpt_array) >= $max_excerpt_num)

				break;

		}

		// restart at last endpos

		$startpos = $endpos;

	}

	return $excerpt_array;

}

// makes excerpt_array a string ready to print out

function prepare_excerpts($excerpt_array, $search_words, $max_excerpt_num) {

	// excerpts: text before and after a single excerpt, html-tag for markup

	$EXCERPT_BEFORE =       '... ';

	$EXCERPT_AFTER =        '&nbsp;...<br />';

	$EXCERPT_MARKUP_START = '<b>';

	$EXCERPT_MARKUP_END =   '</b>';

	// remove duplicate matches from $excerpt_array, if any.

	$excerpt_array = array_unique($excerpt_array);

	// use the first $max_excerpt_num excerpts only

	if(count($excerpt_array) > $max_excerpt_num) {

		$excerpt_array = array_slice($excerpt_array, 0, $max_excerpt_num);

	}

	// prepare search-string

	$string = "(".implode("|", $search_words).")";

	// we want markup on search-results page,

	// but we need some 'magic' to prevent <br />, <b>... from being highlighted

	$excerpt = '';

	foreach($excerpt_array as $str) {

		$excerpt .= '#,,#'.preg_replace("/($string)/i","#,,,,#$1#,,,,,#",$str).'#,,,#';

	}

	$excerpt = str_replace(array('&','<','>','"','\'',"\xC2\xA0"), array('&amp;','&lt;','&gt;','&quot;','&#039;',' '), $excerpt);

	$excerpt = str_replace(array('#,,,,#','#,,,,,#'), array($EXCERPT_MARKUP_START,$EXCERPT_MARKUP_END), $excerpt);

	$excerpt = str_replace(array('#,,#','#,,,#'), array($EXCERPT_BEFORE,$EXCERPT_AFTER), $excerpt);

	// prepare to write out

	if(DEFAULT_CHARSET != 'utf-8') {

		$excerpt = umlauts_to_entities($excerpt, 'UTF-8');

	}

	return $excerpt;

}

// work out what the link-anchor should be

function make_url_target($page_link_target, $text, $search_words) {

	// 1. e.g. $page_link_target=="&monthno=5&year=2007" - module-dependent target. Do nothing.

	// 2. $page_link_target=="#!wb_section_..." - the user wants the section-target, so do nothing.

	// 3. $page_link_target=="#wb_section_..." - try to find a better target, use the section-target as fallback.

	// 4. $page_link_target=="" - do nothing

	if(version_compare(PHP_VERSION, '4.3.3', ">=") && substr($page_link_target,0,12)=='#wb_section_') {

		$word = '('.implode('|', $search_words).')';

		preg_match('/'.$word.'/i', $text, $match, PREG_OFFSET_CAPTURE);

		if($match && is_array($match[0])) {

			$x=$match[0][1]; // position of first match

			// is there an anchor nearby?

			if(preg_match_all('/<\s*(?:a[^>]+?name|[^>]+?id)\s*=\s*"([^"]+)"/i', substr($text,0,$x), $match)) {

				$page_link_target = '#'.$match[1][count($match[1])-1];

			}

		}

	}

	elseif(substr($page_link_target,0,13)=='#!wb_section_') {

		$page_link_target = '#'.substr($page_link_target, 2);

	}

	// since wb 2.7.1 the section-anchor is configurable - SEC_ANCHOR holds the anchor name

	if(substr($page_link_target,0,12)=='#wb_section_') {

		if(defined('SEC_ANCHOR') && SEC_ANCHOR!='') {

			$sec_id = substr($page_link_target, 12);

			$page_link_target = '#'.SEC_ANCHOR.$sec_id;

		} else { // section-anchors are disabled

			$page_link_target = '';

		}

	}

	return $page_link_target;

}

// wrapper for compatibility with old print_excerpt()

function print_excerpt($page_link, $page_link_target, $page_title, $page_description, $page_modified_when, $page_modified_by, $text, $max_excerpt_num, $func_vars, $pic_link="") {

	$mod_vars = array(

		'page_link' => $page_link,

		'page_link_target' => $page_link_target,

		'page_title' => $page_title,

		'page_description' => $page_description,

		'page_modified_when' => $page_modified_when,

		'page_modified_by' => $page_modified_by,

		'text' => $text,

		'max_excerpt_num' => $max_excerpt_num,

		'pic_link' => $pic_link

	);

	print_excerpt2($mod_vars, $func_vars);

}

/* These functions can be used in module-supplied search_funcs

 * -----------------------------------------------------------

 * print_excerpt2() - the main-function to use in all search_funcs

 * print_excerpt() - wrapper for compatibility-reason. Use print_excerpt2() instead.

 * list_files_dirs() - lists all files and dirs below a given directory

 * clear_filelist() - keeps only wanted or removes unwanted entries in file-list.

 */

// prints the excerpts for one section

function print_excerpt2($mod_vars, $func_vars) {

	extract($func_vars, EXTR_PREFIX_ALL, 'func');

	extract($mod_vars, EXTR_PREFIX_ALL, 'mod');

	global $TEXT;

	// check $mod_...vars

	if(!isset($mod_page_link))          $mod_page_link = $func_page_link;

	if(!isset($mod_page_link_target))   $mod_page_link_target = "";

	if(!isset($mod_page_title))         $mod_page_title = $func_page_title;

	if(!isset($mod_page_description))   $mod_page_description = $func_page_description;

	if(!isset($mod_page_modified_when)) $mod_page_modified_when = $func_page_modified_when;

	if(!isset($mod_page_modified_by))   $mod_page_modified_by = $func_page_modified_by;

	if(!isset($mod_text))               $mod_text = "";

	if(!isset($mod_max_excerpt_num))    $mod_max_excerpt_num = $func_default_max_excerpt;

	if(!isset($mod_pic_link))           $mod_pic_link = "";

	if(!isset($mod_no_highlight))       $mod_no_highlight = false;

	if(!isset($func_enable_flush))      $func_enable_flush = false; // set this in db: wb_search.cfg_enable_flush [READ THE DOC BEFORE]

	if(isset($mod_ext_charset)) $mod_ext_charset = strtolower($mod_ext_charset);

	else $mod_ext_charset = '';

	if($mod_text == "") // nothing to do

		{ return false; }

	if($mod_no_highlight) // no highlighting

		{ $mod_page_link_target = "&nohighlight=1".$mod_page_link_target; }

	// clean the text:

	$mod_text = preg_replace('#<(br|dt|/dd|/?(?:h[1-6]|tr|table|p|li|ul|pre|code|div|hr))[^>]*>#i', '.', $mod_text);

	$mod_text = preg_replace('#<(!--.*--|style.*</style|script.*</script)>#iU', ' ', $mod_text);

	$mod_text = preg_replace('#\[\[.*?\]\]#', '', $mod_text); //Filter droplets from the page data

	// strip_tags() is called below

	if($mod_ext_charset!='') { // data from external database may have a different charset

		require_once(WB_PATH.'/framework/functions-utf8.php');

		switch($mod_ext_charset) {

		case 'latin1':

		case 'cp1252':

			$mod_text = charset_to_utf8($mod_text, 'CP1252');

			break;

		case 'cp1251':

			$mod_text = charset_to_utf8($mod_text, 'CP1251');

			break;

		case 'latin2':

			$mod_text = charset_to_utf8($mod_text, 'ISO-8859-2');

			break;

		case 'hebrew':

			$mod_text = charset_to_utf8($mod_text, 'ISO-8859-8');

			break;

		case 'greek':

			$mod_text = charset_to_utf8($mod_text, 'ISO-8859-7');

			break;

		case 'latin5':

			$mod_text = charset_to_utf8($mod_text, 'ISO-8859-9');

			break;

		case 'latin7':

			$mod_text = charset_to_utf8($mod_text, 'ISO-8859-13');

			break;

		case 'utf8':

		default:

			$mod_text = charset_to_utf8($mod_text, 'UTF-8');

		}

	} else {

		$mod_text = entities_to_umlauts($mod_text, 'UTF-8');

	}

	$anchor_text = $mod_text; // make an copy containing html-tags

	$mod_text = strip_tags($mod_text);

	$mod_text = str_replace(array('&gt;','&lt;','&amp;','&quot;','&#039;','&apos;','&nbsp;'), array('>','<','&','"','\'','\'',' '), $mod_text);

	$mod_text = '.'.trim($mod_text).'.';

	// Do a fast scan over $mod_text first. This may speedup things a lot.

	if($func_search_match == 'all') {

		if(!is_all_matched($mod_text, $func_search_words))

			return false;

	}

	elseif(!is_any_matched($mod_text, $func_search_words)) {

		return false;

	}

	// search for an better anchor - this have to be done before strip_tags() (may fail if search-string contains <, &, amp, gt, lt, ...)

	$anchor =  make_url_target($mod_page_link_target, $anchor_text, $func_search_words);

	// make the link from $mod_page_link, add anchor

	$link = "";

	$link = page_link($mod_page_link);

	if(strpos($mod_page_link, 'http:')===FALSE)

		$link .= make_url_searchstring($func_search_match, $func_search_url_array);

	$link .= $anchor;

	// now get the excerpt

	$excerpt = "";

	$excerpt_array = array();

	if($mod_max_excerpt_num > 0) {

		if(!$excerpt_array = get_excerpts($mod_text, $func_search_words, $mod_max_excerpt_num)) {

			return false;

		}

		$excerpt = prepare_excerpts($excerpt_array, $func_search_words, $mod_max_excerpt_num);

	}

	// handle thumbs - to deactivate this look in the module's search.php: $show_thumb (or maybe in the module's settings-page)

	if($mod_pic_link != "") {

		if(isset($mod_special) && $mod_special=='lightbox2_plus')

			$excerpt = '<table class="excerpt_thumb" width="100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td width="110" valign="top">'.$mod_special_piclink.'<img src="'.WB_URL.'/'.MEDIA_DIRECTORY.$mod_pic_link.'" alt="" /></a></td><td>'.$excerpt.'</td></tr></tbody></table>';

		else

			$excerpt = '<table class="excerpt_thumb" width="100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td width="110" valign="top"><a href="'.$link.'"><img src="'.WB_URL.'/'.MEDIA_DIRECTORY.$mod_pic_link.'" alt="" /></a></td><td>'.$excerpt.'</td></tr></tbody></table>';

	}

	// print-out the excerpt

	$vars = array();

	$values = array();

	list($date, $time) = get_page_modified($mod_page_modified_when);

	list($username, $displayname) = get_page_modified_by($mod_page_modified_by, $func_users);

	$vars = array('[LINK]', '[TITLE]','[PAGE_TITLE]' ,'[MENU_TITLE]' , '[DESCRIPTION]', '[USERNAME]','[DISPLAY_NAME]','[DATE]','[TIME]','[TEXT_LAST_UPDATED_BY]','[TEXT_ON]','[EXCERPT]');

	$values = array(

		$link,

		$mod_page_title,

		$func_page_title,

		$func_page_menu_title,

		$mod_page_description,

		$username,

		$displayname,

		$date,

		$time,

		$TEXT['LAST_UPDATED_BY'],

		$TEXT['ON'],

		$excerpt

	);

	echo str_replace($vars, $values, $func_results_loop_string);

	if($func_enable_flush) { // ATTN: this will bypass output-filters and may break template-layout or -filters

		ob_flush();flush();

	}

	return true;

}

// list all files and dirs in $dir (recursive), omits '.', '..', and hidden files/dirs

// returns an array of two arrays ($files[] and $dirs[]).

// usage: list($files,$dirs) = list_files_dirs($directory);

//        $depth: get subdirs (true/false)

function list_files_dirs($dir, $depth=true, $files=array(), $dirs=array()) {

	$dh=opendir($dir);

	while(($file = readdir($dh)) !== false) {

		if($file{0} == '.' || $file == '..') {

			continue;

		}

		if(is_dir($dir.'/'.$file)) {

			if($depth) {

				$dirs[] = $dir.'/'.$file;

				list($files, $dirs) = list_files_dirs($dir.'/'.$file, $depth, $files, $dirs);

			}

		} else {

			$files[] = $dir.'/'.$file;

		}

	}

	closedir($dh);

	natcasesort($files);

	natcasesort($dirs);

	return(array($files, $dirs));

}

// keeps only wanted entries in array $files. $str have to be an eregi()-compatible regex

function clear_filelist($files, $str, $keep=true) {

	// options: $keep = true  : remove all non-matching entries

	//          $keep = false : remove all matching entries

	$c_filelist = array();

	if($str == '')

		return $files;

	foreach($files as $file) {

		if($keep) {

			if(eregi($str, $file)) {

				$c_filelist[] = $file;

			}

		} else {

			if(!eregi($str, $file)) {

				$c_filelist[] = $file;

			}

		}

	}

	return($c_filelist);

}

function search_make_sql_part($words, $match, $columns) {

	// $words are utf-8 encoded, will be converted to DEFAULT_CHARSET below

	if(empty($words) || empty($columns)) return('(1=1)');

	global $database;

	// check if we can use SQL'S "LIKE"

	// work-around for WB'S missing-SET-NAMES-problem

	static $checked = FALSE;

	if($checked===FALSE) {

		$checked = TRUE;

		$lowers = array('utf8'=>"\xc3\xa1", 'iso'=>"\xe1");

		$uppers = array('utf8'=>"\xc3\x81", 'iso'=>"\xc1");

		switch(DEFAULT_CHARSET) {

			case 'utf-8':

				$lo = $lowers['utf8'];

				$up = $uppers['utf8'];

				break;

			case 'iso-8859-1':

			case 'iso-8859-2':

			case 'iso-8859-3':

			case 'iso-8859-4':

			case 'iso-8859-5':

			case 'iso-8859-7':

			case 'iso-8859-9':

			case 'iso-8859-10':

				$lo = $lowers['iso'];

				$up = $uppers['iso'];

				break;

			default:

				$checked = 'check failed'; // we can't handle arabic,hebrew,thai

		}

		if($checked===TRUE && $query = $database->query("SELECT UPPER('$lo')='$up'")) {

			$res = $query->fetchRow();

			if($res[0]==0) {

				$checked = 'check failed';

			}

		} else

			$checked = 'check failed';

	}

	require_once(WB_PATH.'/framework/functions-utf8.php');

	global $search_table_sql_local;

	$altnum = count($search_table_sql_local);

	if($match=='all') $op = 'AND';

	else $op = ' OR'; // keep the leading space!

	// create sql-template

	$sql = '';

	$i = 0;

	foreach($words as $w) {

		if(empty($w)) continue;

		$w_alts = $e_alts = array();

		if($altnum) {

			for($x=0;$x<$altnum;$x++)

				$w_alts[$x] = strtr($w, $search_table_sql_local[$x]);

		} else {

			$w_alts[0] = $w;

		}

		$w_alts = array_unique($w_alts);

		foreach($w_alts as $a) {

			$tmp = htmlentities($a, ENT_COMPAT, 'UTF-8');

			// if the missing-SET-NAMES-issue appears and $tmp contains non-ascii characters: exit and use the normal (slow) search-function instead

			if($checked!==TRUE && preg_match('/[\x80-\xFF]/', $tmp)) return('(1=1)'); // missing-SET-NAMES-issue

			$e_alts[] = $tmp;

		}

		$sql .= "";

		foreach($w_alts as $a)

			$sql .= "{{COL}} LIKE '%".addslashes(utf8_to_charset($a))."%' OR ";

		if(isset($e_alts[$i]) && $e_alts[$i]!=$w)

			$sql .= " {{COL}} LIKE '%".addslashes($e_alts[$i])."%'";

		else {

			$sql = substr($sql, 0, strlen($sql)-4);

			$sql .= '';

		}

		$sql .= " $op ";

		$i++;

	}

	$sql = substr($sql, 0, strlen($sql)-5);

	$sql_template = $sql;

	// create SQL-string from template

	$sql = '(';

	foreach($columns as $c) {

		$sql .= '(';

		$sql .= str_replace('{{COL}}', $c, $sql_template);

		$sql .= ")  OR ";

	}

	$sql = substr($sql, 0, strlen($sql)-4);

	$sql .= ')';

	return($sql);

}