125 lines
2.6 KiB
PHP
125 lines
2.6 KiB
PHP
<?php
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/**
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* Semantic Action Plugin
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*
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* @license GPL 2 (http://www.gnu.org/licenses/gpl.html)
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* @author Giuseppe Di Terlizzi <giuseppe.diterlizzi@gmail.com>
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* @copyright (C) 2015, Giuseppe Di Terlizzi
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*/
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// must be run within Dokuwiki
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if(!defined('DOKU_INC')) die();
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/**
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* Class Semantic Action Plugin
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*
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* Add semantic data to DokuWiki
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*/
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class action_plugin_semantic extends DokuWiki_Action_Plugin {
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/**
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* Register events
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*
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* @param Doku_Event_Handler $controller
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*/
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public function register(Doku_Event_Handler $controller) {
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if ($this->getConf('useJSONLD')) {
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$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'json_ld');
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}
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if ($this->getConf('useMetaDescription')) {
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$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'meta_description');
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}
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if ($this->getConf('useMetaAuthor')) {
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$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'meta_author');
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}
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if ($this->getConf('useDublinCore')) {
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$controller->register_hook('TPL_METAHEADER_OUTPUT', 'BEFORE', $this, 'meta_dublin_core');
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}
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}
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/**
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* JSON-LD Event handler
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*
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* @param Doku_Event &$event
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*/
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public function json_ld(Doku_Event &$event, $param) {
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$helper = $this->loadHelper('semantic');
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if ($json_ld = $helper->getStructuredData()) {
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$event->data["script"][] = array (
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"type" => "application/ld+json",
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"_data" => json_encode($json_ld),
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);
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}
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if ($json_ld_relations = $helper->getBacklinks()) {
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$event->data["script"][] = array (
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"type" => "application/ld+json",
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"_data" => json_encode($json_ld_relations),
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);
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}
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}
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public function meta_description(Doku_Event &$event, $params) {
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$helper = $this->loadHelper('semantic');
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if ($description = $helper->getDescription()) {
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$description = str_replace("\n", ' ', $description);
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$event->data['meta'][] = array(
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'name' => 'description',
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'content' => $description,
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);
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}
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}
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public function meta_author(Doku_Event &$event, $params) {
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$helper = $this->loadHelper('semantic');
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if ($author = $helper->getAuthor()) {
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$event->data['meta'][] = array(
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'name' => 'author',
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'content' => $author,
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);
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}
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}
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public function meta_dublin_core(Doku_Event &$event, $params) {
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$helper = $this->loadHelper('semantic');
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foreach ($helper->getDublinCore() as $name => $content) {
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if (! $content) continue;
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$event->data['meta'][] = array(
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'name' => $name,
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'content' => $content,
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);
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}
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}
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}
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