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- <?php
- /**
- * Atom
- * Documentation Source http://en.wikipedia.org/wiki/Atom_%28standard%29 and
- * http://tools.ietf.org/html/rfc4287
- */
- class AtomFormat extends FormatAbstract{
- public function stringify(){
- $https = isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ? 's' : '';
- $httpHost = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '';
- $httpInfo = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';
- $serverRequestUri = $this->xml_encode($_SERVER['REQUEST_URI']);
- $extraInfos = $this->getExtraInfos();
- $title = $this->xml_encode($extraInfos['name']);
- $uri = !empty($extraInfos['uri']) ? $extraInfos['uri'] : 'https://github.com/sebsauvage/rss-bridge';
- $icon = $this->xml_encode('http://icons.better-idea.org/icon?url='. $uri .'&size=64');
- $uri = $this->xml_encode($uri);
- $entries = '';
- foreach($this->getItems() as $item){
- $entryAuthor = isset($item['author']) ? $this->xml_encode($item['author']) : '';
- $entryTitle = isset($item['title']) ? $this->xml_encode($item['title']) : '';
- $entryUri = isset($item['uri']) ? $this->xml_encode($item['uri']) : '';
- $entryTimestamp = isset($item['timestamp']) ? $this->xml_encode(date(DATE_ATOM, $item['timestamp'])) : '';
- $entryContent = isset($item['content']) ? $this->xml_encode($this->sanitizeHtml($item['content'])) : '';
- $entries .= <<<EOD
- <entry>
- <author>
- <name>{$entryAuthor}</name>
- </author>
- <title type="html"><![CDATA[{$entryTitle}]]></title>
- <link rel="alternate" type="text/html" href="{$entryUri}" />
- <id>{$entryUri}</id>
- <updated>{$entryTimestamp}</updated>
- <content type="html">{$entryContent}</content>
- </entry>
- EOD;
- }
- $feedTimestamp = date(DATE_ATOM, time());
- /* Data are prepared, now let's begin the "MAGIE !!!" */
- $toReturn = '<?xml version="1.0" encoding="UTF-8"?>';
- $toReturn .= <<<EOD
- <feed xmlns="http://www.w3.org/2005/Atom" xmlns:thr="http://purl.org/syndication/thread/1.0" xml:lang="en-US">
- <title type="text">{$title}</title>
- <id>http{$https}://{$httpHost}{$httpInfo}/</id>
- <icon>{$icon}</icon>
- <logo>{$icon}</logo>
- <updated>{$feedTimestamp}</updated>
- <link rel="alternate" type="text/html" href="{$uri}" />
- <link rel="self" href="http{$https}://{$httpHost}{$serverRequestUri}" />
- {$entries}
- </feed>
- EOD;
- // Remove invalid non-UTF8 characters
- ini_set('mbstring.substitute_character', 'none');
- $toReturn = mb_convert_encoding($toReturn, 'UTF-8', 'UTF-8');
- return $toReturn;
- }
- public function display(){
- $this
- ->setContentType('application/atom+xml; charset=UTF-8')
- ->callContentType();
- return parent::display();
- }
- private function xml_encode($text){
- return htmlspecialchars($text, ENT_XML1);
- }
- }
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