mirror of
https://github.com/RSS-Bridge/rss-bridge.git
synced 2024-11-22 17:45:40 +03:00
0a008c4eb3
Some sites return RSS feeds instead of ATOM feeds even though ATOM feeds were specifically requested (/feeds/atom)! This bridge will now detect ATOM/RSS feeds and change behavior accordingly.
136 lines
4.4 KiB
PHP
136 lines
4.4 KiB
PHP
<?php
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define('WORDPRESS_TYPE_ATOM', 1); // Content is of type ATOM
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define('WORDPRESS_TYPE_RSS', 2); // Content is of type RSS
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class WordPressBridge extends BridgeAbstract {
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private $url;
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public function loadMetadatas() {
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$this->maintainer = "aledeg";
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$this->name = "Wordpress Bridge";
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$this->uri = "https://wordpress.org/";
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$this->description = "Returns the 3 newest full posts of a Wordpress blog";
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$this->update = "2016-08-04";
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$this->parameters[] =
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'[
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{
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"name" : "blog URL",
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"required" : "true",
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"identifier" : "url"
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}
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]';
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}
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// Returns the content type for a given html dom
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function DetectContentType($html){
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if($html->find('entry'))
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return WORDPRESS_TYPE_ATOM;
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if($html->find('item'))
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return WORDPRESS_TYPE_RSS;
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return WORDPRESS_TYPE_ATOM; // Make ATOM default
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}
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// Replaces all 'link' tags with 'url' for simplehtmldom to actually find 'links' ('url')
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function ReplaceLinkTagsWithUrlTags($element){
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// We need to fix the 'link' tag as simplehtmldom cannot parse it (just rename it and load back as dom)
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$element_text = $element->outertext;
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$element_text = str_replace('<link>', '<url>', $element_text);
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$element_text = str_replace('</link>', '</url>', $element_text);
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return str_get_html($element_text);
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}
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public function collectData(array $param) {
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function StripCDATA($string) {
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$string = str_replace('<![CDATA[', '', $string);
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$string = str_replace(']]>', '', $string);
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return $string;
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}
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function clearContent($content) {
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$content = preg_replace('/<script.*\/script>/', '', $content);
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$content = preg_replace('/<div class="wpa".*/', '', $content);
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return $content;
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}
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$this->processParams($param);
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if (!$this->hasUrl()) {
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$this->returnError('You must specify a URL', 400);
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}
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$this->url = $this->url.'/feed/atom';
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$html = $this->file_get_html($this->url) or $this->returnError("Could not request {$this->url}.", 404);
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// Notice: We requested an ATOM feed, however some sites return RSS feeds instead!
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$type = $this->DetectContentType($html);
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if($type === WORDPRESS_TYPE_RSS)
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$posts = $html->find('item');
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else
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$posts = $html->find('entry');
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if(!empty($posts) ) {
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$this->name = $html->find('title', 0)->plaintext;
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$i=0;
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foreach ($posts as $article) {
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if($i < 3) {
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$article = $this->ReplaceLinkTagsWithUrlTags($article);
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if($type === WORDPRESS_TYPE_RSS){
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$this->items[$i]->uri = $article->find('url', 0)->innertext; // 'link' => 'url'!
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$this->items[$i]->title = $article->find('title', 0)->plaintext;
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$this->items[$i]->author = trim($article->find('dc:creator', 0)->innertext);
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$this->items[$i]->timestamp = strtotime($article->find('pubDate', 0)->innertext);
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} else {
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$this->items[$i]->uri = $article->find('url', 0)->getAttribute('href'); // 'link' => 'url'!
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$this->items[$i]->title = StripCDATA($article->find('title', 0)->plaintext);
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$this->items[$i]->author = trim($article->find('author', 0)->innertext);
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$this->items[$i]->timestamp = strtotime($article->find('updated', 0)->innertext);
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}
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$article_html = $this->file_get_html($this->items[$i]->uri);
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$this->items[$i]->content = clearContent($article_html->find('article', 0)->innertext);
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if(empty($this->items[$i]->content))
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$this->items[$i]->content = clearContent($article_html->find('.single-content', 0)->innertext); // another common content div
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if(empty($this->items[$i]->content))
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$this->items[$i]->content = clearContent($article_html->find('.post', 0)->innertext); // for old WordPress themes without HTML5
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$i++;
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}
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}
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}
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else {
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$this->returnError("Sorry, {$this->url} doesn't seem to be a Wordpress blog.", 404);
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}
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}
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public function getName() {
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return "{$this->name} - Wordpress Bridge";
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}
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public function getURI() {
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return $this->url;
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}
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public function getCacheDuration() {
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return 3600*3; // 3 hours
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}
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private function hasUrl() {
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if (empty($this->url)) {
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return false;
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}
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return true;
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}
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private function processParams($param) {
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$this->url = $param['url'];
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}
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}
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