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action.php
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action.php
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<?php
/**
* Bloglinks Plugin: displays a link to the previous and the next blog entry above posts in configured namespaces
*
* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
* @author Gina Haeussge <[email protected]>
*/
// must be run within Dokuwiki
if (!defined('DOKU_INC'))
die();
if (!defined('DOKU_LF'))
define('DOKU_LF', "\n");
if (!defined('DOKU_TAB'))
define('DOKU_TAB', "\t");
if (!defined('DOKU_PLUGIN'))
define('DOKU_PLUGIN', DOKU_INC . 'lib/plugins/');
require_once (DOKU_PLUGIN . 'action.php');
require_once(DOKU_INC . 'inc/pageutils.php');
class action_plugin_bloglinks extends DokuWiki_Action_Plugin {
/**
* Register the eventhandlers.
*/
function register(Doku_Event_Handler $controller) {
$controller->register_hook('TPL_ACT_RENDER', 'BEFORE', $this, 'handle_act_render', array ());
$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'handle_metaheader_output', array ());
}
function handle_metaheader_output(Doku_Event $event, $params) {
global $ACT;
if ($ACT != 'show')
return;
$namespace = $this->_getActiveNamespace();
if (!$namespace)
return;
$relatedEntries = $this->_getRelatedEntries($namespace);
if (isset ($relatedEntries['prev'])) {
$event->data['link'][] = array (
'rel' => 'prev',
'href' => wl($relatedEntries['prev']['id'], '')
);
}
if (isset ($relatedEntries['next'])) {
$event->data['link'][] = array (
'rel' => 'next',
'href' => wl($relatedEntries['next']['id'], '')
);
}
return true;
}
function handle_act_render(Doku_Event $event, $params) {
global $ACT;
if ($ACT != 'show')
return;
$namespace = $this->_getActiveNamespace();
if ($namespace)
$this->_printLinks($this->_getRelatedEntries($namespace));
return true;
}
function _getActiveNamespace() {
global $ID;
global $INFO;
$pattern = $this->getConf('excluded_pages');
if (strlen($pattern) > 0 && preg_match($pattern, $ID)) {
return false;
}
if (!$INFO['exists'])
return false;
$namespaces = explode(',', $this->getConf('enabled_namespaces'));
$current_id_parts = explode(':', getNS($ID));
foreach ($namespaces as $namespace) {
$namespaceparts = explode(':', $namespace);
// number of namespace elements must be the same
if (count($namespaceparts) != count($current_id_parts)) {
continue;
}
// mutching each elements in the order
for ($i = 0 ; $i < count($namespaceparts) ; $i++ ) {
if (!preg_match("/$namespaceparts[$i]/",$current_id_parts[$i])) {
continue 2;
}
}
return getNS($ID);
}
return false;
}
function _getRelatedEntries($namespace) {
global $ID;
// get the blog entries for the namespace
if ($my = & plugin_load('helper', 'blog'))
$entries = $my->getBlog($namespace);
if (!$entries)
return;
// normalize keys
$entries = array_values($entries);
// prepare search for current page
$meta = p_get_metadata($ID);
if ($my->sort == 'mdate') {
$date = $meta['date']['modified'];
if (!$date) $date = filemtime(wikiFN($ID));
} else {
$date = $meta['date']['created'];
if (!$date) $date = filectime(wikiFN($ID));
}
$perm = auth_quickaclcheck($ID);
$curPage = array (
'id' => $ID,
'title' => $meta['title'],
'date' => $date,
'user' => $meta['creator'],
'desc' => $meta['description']['abstract'],
'exists' => true,
'perm' => $perm,
'draft' => ($meta['type'] == 'draft'),
);
// get index of current page
$curIndex = array_search($curPage, $entries);
// get previous and next entries
if ($curIndex > 0 && curIndex < count($entries) - 1) { // got a prev and a next
list ($next, $cur, $prev) = array_slice($entries, $curIndex -1, 3);
} else if ($curIndex == 0) { // only got a prev
list ($cur, $prev) = array_slice($entries, $curIndex, 2);
} else { // only got a next
list ($next, $cur) = array_slice($entries, $curIndex -1, 2);
}
return array('prev' => $prev, 'cur' => $cur, 'next' => $next);
}
/**
* Prints the links to the related entries
*/
function _printLinks($relatedEntries) {
// display links
echo '<div id="plugin_bloglinks__links">' . DOKU_LF;
foreach(array('prev', 'next') as $type) {
if (isset ($relatedEntries[$type])) {
echo '<div class="plugin_bloglinks__'.$type.'">';
echo '<a href="' . wl($relatedEntries[$type]['id'], '') . '" class="wikilink1" rel="'.$type.'">' . $this->_linkTemplate($relatedEntries[$type], $type) . '</a>';
echo '</div>';
}
}
echo DOKU_LF . '</div>';
}
function _linkTemplate($entry, $type) {
global $conf;
$replace = array(
'@@TITLE@@' => $entry['title'],
'@@AUTHOR@@' => $entry['user'],
'@@DATE@@' => date($conf['dformat'], $entry['date']),
'@@NAME@@' => $this->getLang($type . '_link'),
);
$linktext = $this->getConf($type.'_template');
$linktext = str_replace(array_keys($replace), array_values($replace), $linktext);
return $linktext;
}
}
//Setup VIM: ex: et ts=4 enc=utf-8 :