rss-bridge/formats/AtomFormat.php
2018-11-05 19:05:59 +01:00

111 lines
3.3 KiB
PHP

<?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'] : '';
$serverRequestUri = isset($_SERVER['REQUEST_URI']) ? $this->xml_encode($_SERVER['REQUEST_URI']) : '';
$extraInfos = $this->getExtraInfos();
$title = $this->xml_encode($extraInfos['name']);
$uri = !empty($extraInfos['uri']) ? $extraInfos['uri'] : REPOSITORY;
$uriparts = parse_url($uri);
if(!empty($extraInfos['icon'])) {
$icon = $extraInfos['icon'];
} else {
$icon = $this->xml_encode($uriparts['scheme'] . '://' . $uriparts['host'] . '/favicon.ico');
}
$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'])) : '';
$entryEnclosures = '';
if(isset($item['enclosures'])) {
foreach($item['enclosures'] as $enclosure) {
$entryEnclosures .= '<link rel="enclosure" href="'
. $this->xml_encode($enclosure)
. '" type="' . getMimeType($enclosure) . '" />'
. PHP_EOL;
}
}
$entryCategories = '';
if(isset($item['categories'])) {
foreach($item['categories'] as $category) {
$entryCategories .= '<category term="'
. $this->xml_encode($category)
. '"/>'
. PHP_EOL;
}
}
$entries .= <<<EOD
<entry>
<author>
<name>{$entryAuthor}</name>
</author>
<title type="html">{$entryTitle}</title>
<link rel="alternate" type="text/html" href="{$entryUri}" />
<id>{$entryUri}</id>
<updated>{$entryTimestamp}</updated>
<content type="html">{$entryContent}</content>
{$entryEnclosures}
{$entryCategories}
</entry>
EOD;
}
$feedTimestamp = date(DATE_ATOM, time());
$charset = $this->getCharset();
/* Data are prepared, now let's begin the "MAGIE !!!" */
$toReturn = <<<EOD
<?xml version="1.0" encoding="{$charset}"?>
<feed xmlns="http://www.w3.org/2005/Atom" xmlns:thr="http://purl.org/syndication/thread/1.0">
<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 characters
ini_set('mbstring.substitute_character', 'none');
$toReturn = mb_convert_encoding($toReturn, $this->getCharset(), 'UTF-8');
return $toReturn;
}
public function display(){
$this
->setContentType('application/atom+xml; charset=' . $this->getCharset())
->callContentType();
return parent::display();
}
private function xml_encode($text){
return htmlspecialchars($text, ENT_XML1);
}
}