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- <?php
- function xml_encode($text) {
- return htmlspecialchars($text, ENT_XML1);
- }
- /**
- * Atom
- * Documentation Source http://en.wikipedia.org/wiki/Atom_%28standard%29 and http://tools.ietf.org/html/rfc4287
- *
- * @name Atom
- */
- class AtomFormat extends FormatAbstract{
- public function stringify(){
- /* Datas preparation */
- $https = ( isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] == 'on' ? 's' : '' );
- $httpHost = isset($_SERVER['HTTP_HOST']) ? $_SERVER['HTTP_HOST'] : '';
- $httpInfo = isset($_SERVER['PATH_INFO']) ? $_SERVER['PATH_INFO'] : '';
- $serverRequestUri = xml_encode($_SERVER['REQUEST_URI']);
- $extraInfos = $this->getExtraInfos();
- $title = xml_encode($extraInfos['name']);
- $uri = $extraInfos['uri'];
- $icon = xml_encode('http://icons.better-idea.org/icon?url='. $uri .'&size=64');
- $uri = xml_encode($uri);
- $entries = '';
- foreach($this->getDatas() as $data){
- $entryName = is_null($data->name) ? $title : xml_encode($data->name);
- $entryAuthor = is_null($data->author) ? $uri : xml_encode($data->author);
- $entryTitle = is_null($data->title) ? '' : xml_encode($data->title);
- $entryUri = is_null($data->uri) ? '' : xml_encode($data->uri);
- $entryTimestamp = is_null($data->timestamp) ? '' : xml_encode(date(DATE_ATOM, $data->timestamp));
- // We prevent content from closing the CDATA too early.
- $entryContent = is_null($data->content) ? '' : '<![CDATA[' . $this->sanitizeHtml(str_replace(']]>','',$data->content)) . ']]>';
- // We generate a list of the enclosure links
- $entryEnclosures = "";
-
- foreach($data->enclosures as $enclosure) {
- $entryEnclosures .= "<link rel=\"enclosure\" href=\"".$enclosure."\"></link>";
- }
- $entries .= <<<EOD
- <entry>
- <author>
- <name>{$entryName}</name>
- <uri>{$entryAuthor}</uri>
- </author>
- <title type="html"><![CDATA[{$entryTitle}]]></title>
- <link rel="alternate" type="text/html" href="{$entryUri}" />
- <id>{$entryUri}</id>
- <updated>{$entryTimestamp}</updated>
- <content type="html">{$entryContent}</content>
- {$entryEnclosures}
- </entry>
- EOD;
- }
- /*
- TODO :
- - Security: Disable Javascript ?
- - <updated> : Define new extra info ?
- - <content type="html"> : RFC look with xhtml, keep this in spite of ?
- */
- // #### TEMPORARY FIX ###
- $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}" />
- {$entries}
- </feed>
- EOD;
-
- // Remove invalid non-UTF8 characters
- // We cannot use iconv because of a bug in some versions of iconv.
- // See http://www.php.net/manual/fr/function.iconv.php#108643
- //$toReturn = iconv("UTF-8", "UTF-8//IGNORE", $toReturn);
- // So we use mb_convert_encoding instead:
- 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') // We force UTF-8 in ATOM output.
- ->callContentType();
- return parent::display();
- }
- }
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