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<?php // -*-php-*-
rcs_id('$Id: PopularNearby.php,v 1.5 2004/11/23 15:17:19 rurban Exp $');
/*
Copyright 2004 $ThePhpWikiProgrammingTeam
This file is 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
*/
/** Re-implement the classic phpwiki-1.2 feature of the
* popular nearby pages, specific to the from/to links:
* 5 best incoming links: xx, xx, xx, ...
* 5 best outgoing links: xx, xx, xx, ...
* 5 most popular nearby: xx, xx, xx, ...
*/
/* Usage:
* <small><?plugin PopularNearby mode=incoming ?></small>
* <small><?plugin PopularNearby mode=outgoing ?></small>
* <small><?plugin PopularNearby mode=nearby ?></small>
*/
require_once('lib/PageList.php');
class WikiPlugin_PopularNearby
extends WikiPlugin
{
function getName () {
return _("PopularNearby");
}
function getDescription () {
return _("List the most popular pages nearby.");
}
function getVersion() {
return preg_replace("/[Revision: $]/", '',
"\$Revision: 1.5 $");
}
function getDefaultArguments() {
return array('pagename' => '[pagename]',
'mode' => 'nearby', // or 'incoming' or 'outgoing'
//'exclude' => false, // not yet
'limit' => 5,
'noheader' => 0,
);
}
function run($dbi, $argstr, &$request, $basepage) {
$args = $this->getArgs($argstr, $request);
extract($args);
$header = '';
$page = $dbi->getPage($pagename);
switch ($mode) {
case 'incoming': // not the hits, but the number of links
if (! $noheader )
$header = sprintf(_("%d best incoming links: "),$limit);
$links = $this->sortedLinks($page->getLinks("reversed"),"reversed",$limit);
break;
case 'outgoing': // not the hits, but the number of links
if (! $noheader )
$header = sprintf(_("%d best outgoing links: "),$limit);
$links = $this->sortedLinks($page->getLinks(),false,$limit);
break;
case 'nearby': // all linksfrom and linksto, sorted by hits
if (! $noheader )
$header = sprintf(_("%d most popular nearby: "),$limit);
$inlinks = $page->getLinks();
$outlinks = $page->getLinks('reversed');
// array_merge doesn't sort out duplicate page objects here.
$links = $this->sortedLinks(array_merge($inlinks->asArray(),
$outlinks->asArray()),
false, $limit);
break;
}
$html = HTML($header);
for ($i=0; $i<count($links); $i++) {
$html->pushContent($links[$i]['format'],$i<count($links)-1?', ':'');
}
return $html;
}
/**
* Get and sort the links:
* mode=nearby: $pages Array
* mode=incoming: $pages iter and $direction=true
* mode=outgoing: $pages iter and $direction=false
*
* @access private
*
* @param $pages array of WikiDB_Page's or a Page_iterator
* @param $direction boolean: true if incoming links
*
* @return Array of sorted links
*/
function sortedLinks($pages, $direction=false, $limit=5) {
$links = array();
if (is_array($pages)) {
$already = array(); // need special duplicate check
foreach ($pages as $page) {
if (isset($already[$page->_pagename])) continue;
else $already[$page->_pagename] = 1;
// just the number of hits
$hits = $page->get('hits');
if (!$hits) continue;
$links[] = array('hits' => $hits,
'pagename' => $page->_pagename,
'format' => HTML(WikiLink($page->_pagename),' (' . $hits . ')'));
}
} else {
while ($page = $pages->next()) {
// different score algorithm:
// the number of links to/from the page
$l = $page->getLinks(!$direction);
$score = $l->count();
if (!$score) continue;
$name = $page->_pagename;
$links[] = array('hits' => $score,
'pagename' => $name,
'format' => HTML(WikiLink($name),' (' . $score . ')'));
}
$pages->free();
}
if (count($links) > $limit)
array_splice($links, $limit);
return $this->sortByHits($links);
}
function sortByHits($links) {
if (!$links) return array();
usort($links,'cmp_by_hits'); // php-4.0.6 cannot use methods
reset($links);
return $links;
}
};
function cmp_by_hits($a, $b) {
if ($a['hits'] == $b['hits']) return 0;
return $a['hits'] < $b['hits'] ? 1 : -1;
}
// $Log: PopularNearby.php,v $
// Revision 1.5 2004/11/23 15:17:19 rurban
// better support for case_exact search (not caseexact for consistency),
// plugin args simplification:
// handle and explode exclude and pages argument in WikiPlugin::getArgs
// and exclude in advance (at the sql level if possible)
// handle sortby and limit from request override in WikiPlugin::getArgs
// ListSubpages: renamed pages to maxpages
//
// Revision 1.4 2004/05/01 18:02:41 rurban
// 4.0.6 obviously cannot use methods as cmp function. so it must be a global func
//
// Revision 1.2 2004/04/29 23:25:12 rurban
// re-ordered locale init (as in 1.3.9)
// fixed loadfile with subpages, and merge/restore anyway
// (sf.net bug #844188)
//
// Revision 1.1 2004/04/29 18:32:38 rurban
// Re-implement the classic phpwiki-1.2 feature of the
// * 5 best incoming links: xx, xx, xx, ...
// * 5 best outgoing links: xx, xx, xx, ...
// * 5 most popular nearby: xx, xx, xx, ...
//
// 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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