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<?php // -*-php-*-
rcs_id('$Id: SearchHighlight.php,v 1.1 2004/09/26 14:58:36 rurban Exp $');
/*
Copyright 2004 $ThePhpWikiProgrammingTeam
This file is NOT part of PhpWiki.
PhpWiki 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.
PhpWiki 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 PhpWiki; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
require_once("lib/TextSearchQuery.php");
require_once("lib/PageList.php");
/** When someone is referred from a search engine like Google, Yahoo
* or our own fulltextsearch, the terms they search for are highlighted.
* See http://wordpress.org/about/shots/1.2/plugins.png
*
* Could be hooked from lib/display.php (but then not possible for actionpages)
* or at request->flush or on a template. (if google referrer, search)
*/
class WikiPlugin_SearchHighlight
extends WikiPlugin
{
function getName() {
return _("SearchHighlight");
}
function getDescription() {
return _("Hilight referred search terms.");
}
function getVersion() {
return preg_replace("/[Revision: $]/", '',
"\$Revision: 1.1 $");
}
function getDefaultArguments() {
return array('s' => false,
'case_exact' => false, //not yet supported
'regex' => false, //not yet supported
);
}
function run($dbi, $argstr, &$request, $basepage) {
$args = $this->getArgs($argstr, $request);
if (empty($args['s']))
return '';
extract($args);
$query = new TextSearchQuery($s, $case_exact, $regex);
//$pages = $dbi->fullSearch($query);
$lines = array();
$hilight_re = $query->getHighlightRegexp();
$page = $request->getPage();
return $this->showhits($page, $hilight_re);
}
function showhits($page, $hilight_re) {
$current = $page->getCurrentRevision();
$matches = preg_grep("/$hilight_re/i", $current->getContent());
$html = array();
foreach ($matches as $line) {
$line = $this->highlight_line($line, $hilight_re);
$html[] = HTML::dd(HTML::small(array('class' => 'search-context'),
$line));
}
return $html;
}
function highlight_line ($line, $hilight_re) {
while (preg_match("/^(.*?)($hilight_re)/i", $line, $m)) {
$line = substr($line, strlen($m[0]));
$html[] = $m[1]; // prematch
$html[] = HTML::strong(array('class' => 'search-term'), $m[2]); // match
}
$html[] = $line; // postmatch
return $html;
}
};
// $Log: SearchHighlight.php,v $
// Revision 1.1 2004/09/26 14:58:36 rurban
// naive SearchHighLight implementation
//
//
// Local Variables:
// mode: php
// tab-width: 8
// c-basic-offset: 4
// c-hanging-comment-ender-p: nil
// indent-tabs-mode: nil
// End:
?>
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