WB 2.08.x

<?php

// $Id: search_modext.php 743 2008-03-08 13:12:22Z thorn $

/*

 Website Baker Project <http://www.websitebaker.org/>

 Copyright (C) 2004-2008, Ryan Djurovich

 Website Baker 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.

 Website Baker is distributed in the hope that it will be useful,

 but WITHOUT ANY WARRANTY; without even the implied warranty of

 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 GNU General Public License for more details.

 You should have received a copy of the GNU General Public License

 along with Website Baker; if not, write to the Free Software

 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

*/

// 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 {

		$str = strtr($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.'/iu', $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.'/iu', $text)) {

		$any_matched = true;

	}

	return $any_matched;

}

// collects the matches from text in excerpt_array

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

	$match_array = array();

	$excerpt_array = array();

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

	$text = strtr($text, array('&lt;'=>'<', '&gt;'=>'>', '&amp;'=>'&', '&quot;'=>'"', '&#39;'=>'\'', '&nbsp;'=>"\xC2\xA0"));

	$word = strtr($word, array('&lt;'=>'<', '&gt;'=>'>', '&amp;'=>'&', '&quot;'=>'"', '&#39;'=>'\'', '&nbsp;'=>"\xC2\xA0"));

	// Build the regex-string

	//...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

	$str1=".!?;"."\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";

	// ...DOUBLE EXCLAMATION MARK - INTERROBANG - EXCLAMATION QUESTION MARK - QUESTION EXCLAMATION MARK - DOUBLE QUESTION MARK - HALFWIDTH IDEOGRAPHIC FULL STOP - IDEOGRAPHIC FULL STOP - IDEOGRAPHIC COMMA

	$str2=".!?;"."\xE2\x80\xBC"."\xE2\x80\xBD"."\xE2\x81\x89"."\xE2\x81\x88"."\xE2\x81\x87"."\xEF\xBD\xA1"."\xE3\x80\x82"."\xE3\x80\x81";

	// "{0,200}?'.$word.'" : the '?' (ungreedy) is for performance-tuning; try a step-by-step-trace to see what i mean. 

	if(preg_match_all('/(?:^|\b|['.$str1.'])([^'.$str1.']{0,200}?'.$word.'[^'.$str2.']{0,200}(?:['.$str2.']|\b|$))/isu', $text, $match_array)) {

		foreach($match_array[1] AS $string) {

			$excerpt_array[] = trim($string);

		}

	}

	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).")";

	$string = strtr($string, array('&lt;'=>'<', '&gt;'=>'>', '&amp;'=>'&', '&quot;'=>'"', '&#39;'=>'\'', '&nbsp;'=>"\xC2\xA0"));

	// 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)/iu","#,,,,#$1#,,,,,#",$str).'#,,,#';

	}

	$excerpt = strtr($excerpt, array('<'=>'&lt;', '>'=>'&gt;', '&'=>'&amp;', '"'=>'&quot;', '\''=>'&#39;'));

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

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

	// prepare to write out

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

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

	}

	return $excerpt;

}

// work out what the link-target 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, '4.3.0', ">=") && substr($page_link_target,0,12)=='#wb_section_') {

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

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

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

			$x=$match[0][1];

			// is there an anchor nearby?

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

				$anchor='';

				foreach($match[1] AS $array) {

					if($array[1] > $x) {

						break;

					}

					$anchor = $array[0];

				}

				if($anchor != '') {

					$page_link_target = '#'.$anchor;

				}

			}

		}

	}

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

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

	}

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

		{ return false; }

	if($mod_no_highlight) // no highlighting

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

	// prepare the text (part 1): remove lf and cr, convert \" to ", remove comments, style, scripting and unnecessary whitespace, convert to utf8

	$mod_text = strtr($mod_text, array("\x0D\x0A" => ' ', "\x0D" => ' ', "\x0A" => ' ', '\"' => '"'));

	$mod_text = preg_replace('/(<!--.*?-->|<style.*?<\/style>|<script.*?<\/script>|\s+)/i', ' ', $mod_text);

	// remove email-addresses

	$mod_text = preg_replace('/\b[a-z0-9._%+-]+@[a-z0-9.-]+\.[a-z]{2,4}\b/', ' ', $mod_text);

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

	// make the link from $mod_page_link, add target

	$link = "";

	$link = page_link($mod_page_link);

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

	$link .= make_url_target($mod_page_link_target, $mod_text, $func_search_words);

	// prepare the text (part 2): convert some special tags to '.', strip tags

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

	$mod_text = strip_tags($mod_text);

	// Do a fast scan over $mod_text first. This will 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;

	}

	// 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 image

	if($mod_pic_link != "") {

		$excerpt = '<table width="100%" cellspacing="0" cellpadding="0" border="0"><tbody><tr><td width="110" valign="top"><a href="'.$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]', '[DESCRIPTION]', '[USERNAME]','[DISPLAY_NAME]','[DATE]','[TIME]','[TEXT_LAST_UPDATED_BY]','[TEXT_ON]','[EXCERPT]');

	$values = array(

		$link,

		$mod_page_title,

		$mod_page_description,

		$username,

		$displayname,

		$date,

		$time,

		$TEXT['LAST_UPDATED_BY'],

		$TEXT['ON'],

		$excerpt

	);

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

	return true;

}

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

// 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 == '.' || $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) {

	// $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);

}

?>