Rss-Bridge/formats/AtomFormat.php

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<?php
/**
* 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 = $this->xml_encode($_SERVER['REQUEST_URI']);
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$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);
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$entries = '';
foreach($this->getDatas() as $data){
$entryAuthor = is_null($data->author) ? $title : $this->xml_encode($data->author);
$entryTitle = is_null($data->title) ? '' : $this->xml_encode($data->title);
$entryUri = is_null($data->uri) ? '' : $this->xml_encode($data->uri);
$entryTimestamp = is_null($data->timestamp) ? '' : $this->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)) . ']]>';
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$entries .= <<<EOD
<entry>
<author>
<name>{$entryAuthor}</name>
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</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;
}
/*
TODO :
- Security: Disable Javascript ?
- <updated> : Define new extra info ?
- <content type="html"> : RFC look with xhtml, keep this in spite of ?
*/
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// #### TEMPORARY FIX ###
$feedTimestamp = date(DATE_ATOM, time());
// ################
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/* 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>{$icon}</logo>
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<updated>{$feedTimestamp}</updated>
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<link rel="alternate" type="text/html" href="{$uri}" />
<link rel="self" href="http{$https}://{$httpHost}{$serverRequestUri}" />
{$entries}
</feed>
EOD;
// Remove invalid non-UTF8 characters
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// We cannot use iconv because of a bug in some versions of iconv.
// See http://www.php.net/manual/fr/function.iconv.php#108643
//$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');
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return $toReturn;
}
public function display(){
$this
->setContentType('application/atom+xml; charset=UTF-8') // We force UTF-8 in ATOM output.
->callContentType();
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return parent::display();
}
private function xml_encode($text) {
return htmlspecialchars($text, ENT_XML1);
}
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}