Oembed Provider 2.0.0

wp-content/plugins/oembed-provider/oembed-provider.php

@@ -3,104 +3,178 @@
 Plugin Name: oEmbed Provider
 Plugin URI: http://wordpress.org/extend/plugins/oembed-provider/
 Description: An oEmbed provider for Wordpress
-Version: 1.1
-Author: Craig Andrews <candrews@integralblue.com>
-Author URI: http://candrews.integralblue.com
+Version: 2.0.0
+Author: pfefferle, candrews
+Author URI: https://github.com/pfefferle/oEmbedProvider/
 */
 
-/*
-    Copyright 2009  Craig Andrews  (candrews@integralblue.com)
-
-    This program 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.
-
-    This program 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.
+/**
+ * oEmbed Provider for WordPress
+ *
+ * @author Matthias Pfefferle
+ * @author Craig Andrews
+ */
+class OembedProvider {
   
-    You should have received a copy of the GNU General Public License
-    along with this program; if not, write to the Free Software
-    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+  /**
+   * auto discovery links
    */
+  function add_oembed_links(){
+    if(is_singular()){
+      echo '<link rel="alternate" type="application/json+oembed" href="' . site_url('/?oembed=true&amp;format=json&amp;url=' . urlencode(get_permalink())) . '" />'."\n";
+      echo '<link rel="alternate" type="text/xml+oembed" href="' . site_url('/?oembed=true&amp;format=xml&amp;url=' . urlencode(get_permalink())) . '" />'."\n";
+    }
+  }
 
-if(function_exists('add_action')){
-    // Running inside of Wordpress
-    add_action('wp_head', 'add_oembed_links');
+  /**
+   * adds query vars
+   */
+  function query_vars($query_vars) {
+    $query_vars[] = 'oembed';
+    $query_vars[] = 'format';
+    $query_vars[] = 'url';
+    $query_vars[] = 'callback';
 
-    function add_oembed_links(){
-        if(is_single() || is_page() || is_attachment()){
-            print '<link rel="alternate" type="application/json+oembed" href="' . plugins_url('oembed-provider/oembed-provider.php') . '?format=json&url=' . urlencode(get_permalink())  . '" />';
-            print '<link rel="alternate" type="application/xml+oembed" href="' . plugins_url('oembed-provider/oembed-provider.php') . '?format=xml&url=' . urlencode(get_permalink())  . '" />';
+    return $query_vars;
   }
+  
+  /**
+   * handles request
+   */
+  function parse_query($wp) {
+    if (!array_key_exists('oembed', $wp->query_vars) ||
+        !array_key_exists('url', $wp->query_vars)) {
+      return;
     }
-}else{
-    //Directly called (not by Wordpress)
-    require('../../../wp-load.php');
 
-    $url = $_GET['url'];
-    $post_ID = url_to_postid($url);
+    $post_ID = url_to_postid($wp->query_vars['url']);
     $post = get_post($post_ID);
-    if(empty($post)){
+    
+    if(!$post) {
       header('Status: 404');
       die("Not found");
-    }else{
+    }
+    
+    $post_type = get_post_type($post);
+    
+    // add support for alternate output formats
+    $oembed_provider_formats = apply_filters("oembed_provider_formats", array('json', 'xml'));
+    
+    // check output format
+    $format = "json";
+    if (array_key_exists('format', $wp->query_vars) && in_array(strtolower($wp->query_vars['format']), $oembed_provider_formats)) {
+      $format = $wp->query_vars['format'];
+    }
+    
+    // content filter
+    $oembed_provider_data = apply_filters("oembed_provider_data", array(), $post_type, $post);
+    $oembed_provider_data = apply_filters("oembed_provider_data_{$post_type}", $oembed_provider_data, $post);
+    
+    do_action("oembed_provider_render", $oembed_provider_data, $wp->query_vars);
+    do_action("oembed_provider_render_{$format}", $oembed_provider_data, $wp->query_vars);
+  }
+  
+  /**
+   * adds default content
+   *
+   * @param array $oembed_provider_data
+   * @param string $post_type
+   * @param Object $post
+   */
+  function generate_default_content($oembed_provider_data, $post_type, $post) {
     $author = get_userdata($post->post_author);
-        $oembed=array();
-        $oembed['version']='1.0';
-        $oembed['provider_name']=get_option('blogname');
-        $oembed['provider_url']=get_option('home');
-        $oembed['author_name']=$author->display_name;
-        $oembed['author_url']=get_author_posts_url($author->ID, $author->nicename);
-        $oembed['title']=$post->post_title;
-        switch(get_post_type($post)){
-            case 'attachment':
+
+    $oembed_provider_data['version'] = '1.0';
+    $oembed_provider_data['provider_name'] = get_bloginfo('name');
+    $oembed_provider_data['provider_url'] = home_url();
+    $oembed_provider_data['author_name'] = $author->display_name;
+    $oembed_provider_data['author_url'] = get_author_posts_url($author->ID, $author->nicename);
+    $oembed_provider_data['title'] = $post->post_title;
+    
+    return $oembed_provider_data;
+  }
+  
+  /**
+   * adds attachement specific content
+   *
+   * @param array $oembed_provider_data
+   * @param Object $post
+   */
+  function generate_attachement_content($oembed_provider_data, $post) {
     if (substr($post->post_mime_type,0,strlen('image/'))=='image/') {
-                    $oembed['type']='photo';
+      $oembed_provider_data['type']='photo';
     } else {
-                    $oembed['type']='link';
-                }
-                $oembed['url']=wp_get_attachment_url($post->ID);
-                break;
-            case 'post':
-            case 'page':
-                $oembed['type']='link';
-                $oembed['html']=empty($post->post_excerpt)?$post->post_content:$post->post_excerpt;
-                break;
-            default:
-                header('Status: 501');
-                die('oEmbed not supported for posts of type \'' . $post->type . '\'');
-                break;
-        }
-
-        $format = $_GET['format'];
-        switch($format){
-            case 'json':
-                header('Content-Type: application/json; charset=' . get_option('blog_charset'), true);
-                $callback = $_GET['callback'];
-                if($callback){
-                    print $callback . '(';
-                }
-                print(json_encode($oembed));
-                if($callback){
-                    print ')';
-                }
-                break;
-            case 'xml':
-                header('Content-Type: text/xml; charset=' . get_option('blog_charset'), true);
-                print '<?xml version="1.0" encoding="' . get_option('blog_charset') . '" standalone="yes"?>';
-                print '<oembed>';
-                foreach(array_keys($oembed) as $element){
-                    print '<' . $element . '><![CDATA[' . $oembed[$element] . ']]></' . $element . '>';
-                }
-                print '</oembed>';
-                break;
-            default:
-                header('Status: 501');
-                die('Format \'' . $format . '\' not supported');
-        }
-    }
-}
-?>
+      $oembed_provider_data['type']='link';
+    }
+    $oembed_provider_data['url'] = wp_get_attachment_url($post->ID);
+    
+    return $oembed_provider_data;
+  }
+  
+  /**
+   * adds post/page specific content
+   *
+   * @param array $oembed_provider_data
+   * @param Object $post
+   */
+  function generate_post_content($oembed_provider_data, $post) {
+    if (function_exists('has_post_thumbnail') && has_post_thumbnail($post->ID)) {
+      $image = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID));
+      $oembed_provider_data['thumbnail_url'] = $image[0];
+      $oembed_provider_data['thumbnail_width'] = $image[1];
+      $oembed_provider_data['thumbnail_height'] = $image[2];
+    }
+    $oembed_provider_data['type']='rich';
+    $oembed_provider_data['html'] = empty($post->post_excerpt) ? $post->post_content : $post->post_excerpt;
+
+    return $oembed_provider_data;
+  }
+  
+  /**
+   * render json output
+   *
+   * @param array $oembed_provider_data
+   */
+  function render_json($oembed_provider_data, $wp_query) {
+    header('Content-Type: application/json; charset=' . get_bloginfo('charset'), true);
+    
+    // render json output
+    $json = json_encode($oembed_provider_data);
+    
+    // add callback if available
+    if (array_key_exists('callback', $wp_query)) {
+      $json = $wp_query['callback'] . "($json);";
+    }
+    
+    echo $json;
+    exit;
+  }
+  
+  /**
+   * render xml output
+   *
+   * @param array $oembed_provider_data
+   */
+  function render_xml($oembed_provider_data) {
+    header('Content-Type: text/xml; charset=' . get_bloginfo('charset'), true);
+    
+    // render xml-output
+    echo '<?xml version="1.0" encoding="' . get_bloginfo('charset') . '" ?>';
+    echo '<oembed>';
+    foreach(array_keys($oembed_provider_data) as $element){
+      echo '<' . $element . '>' . htmlspecialchars($oembed_provider_data[$element]) . '</' . $element . '>';
+    }
+    echo '</oembed>';
+    exit;
+  }
+}
+
+add_action('wp_head', array('OembedProvider', 'add_oembed_links'));
+add_action('parse_query', array('OembedProvider', 'parse_query'));
+add_filter('query_vars', array('OembedProvider', 'query_vars'));
+add_filter('oembed_provider_data', array('OembedProvider', 'generate_default_content'), 90, 3);
+add_filter('oembed_provider_data_attachement', array('OembedProvider', 'generate_attachement_content'), 91, 2);
+add_filter('oembed_provider_data_post', array('OembedProvider', 'generate_post_content'), 91, 2);
+add_filter('oembed_provider_data_page', array('OembedProvider', 'generate_post_content'), 91, 2);
+add_action('oembed_provider_render_json', array('OembedProvider', 'render_json'), 99, 2);
+add_action('oembed_provider_render_xml', array('OembedProvider', 'render_xml'), 99);
\ No newline at end of file

wp-content/plugins/oembed-provider/readme.txt

 === oEmbed Provider ===
-Contributors: candrews
-Donate link: http://candrews.integralblue.com/
+Contributors: pfefferle, candrews
 Tags: oembed, links
-Requires at least: 2.8.0
-Tested up to: 2.8.2
-Stable tag: 1.1
+Requires at least: 3.0
+Tested up to: 3.5.1
+Stable tag: 2.0.0
 
 An oEmbed provider for Wordpress.
 
@@ -28,8 +27,8 @@ Yes!
 
 == Changelog ==
 
-= 1.1 =
-* Added callback parameter for JSON-P
+= 2.0.0 =
+* complete refactoring
 
 = 1.0 =
 * Initial release