rss-bridge/bridges/TwitterEngineeringBridge.php

<?php
class TwitterEngineeringBridge extends FeedExpander {

	const MAINTAINER = 'corenting';
	const NAME = 'Twitter Engineering Blog';
	const URI = 'https://blog.twitter.com/engineering/';
	const DESCRIPTION = 'Returns the newest articles.';
	const CACHE_TIMEOUT = 21600; // 6h

	protected function parseItem($item){
		$item = parent::parseItem($item);

		$article_html = getSimpleHTMLDOMCached($item['uri']);
		if(!$article_html) {
			$item['content'] .= '<p><em>Could not request ' . $this->getName() . ': ' . $item['uri'] . '</em></p>';
			return $item;
		}
		$article_html = defaultLinkTo($article_html, $this->getURI());

		$article_body = $article_html->find('div.column.column-6', 0);

		// Remove elements that are not part of article content
		$unwanted_selector = 'div.bl02-blog-post-text-masthead, div.tweet-error-text, div.bl13-tweet-template';
		foreach($article_body->find($unwanted_selector) as $found) {
			$found->outertext = '';
		}

		// Set src for images
		foreach($article_body->find('img') as $found) {
			$found->setAttribute('src', $found->getAttribute('data-src'));
		}

		$item['content'] = $article_body;
		$item['timestamp'] = strtotime($article_html->find('span.b02-blog-post-no-masthead__date', 0)->innertext);
		$item['categories'] = self::getCategoriesFromTags($article_html);

		return $item;
	}

	private function getCategoriesFromTags($article_html){
		$tags_list_items = array($article_html->find('.post__tags > ul > li'));
		$categories = array();

		foreach($tags_list_items as $tag_list_item) {
			foreach($tag_list_item as $tag) {
				$categories[] = trim($tag->plaintext);
			}
		}

		return $categories;
	}

	public function collectData(){
		$feed = static::URI . 'en_us/blog.rss';
		$this->collectExpandableDatas($feed);
	}

	public function getName(){
		// Else the original feed returns "English (US)" as the title
		return 'Twitter Engineering Blog';
	}
}