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

120 lines
3.7 KiB
PHP

<?php
/**
* Mrss
* Documentation Source http://www.rssboard.org/media-rss
*/
class MrssFormat 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']);
if(!empty($extraInfos['uri'])) {
$uri = $this->xml_encode($extraInfos['uri']);
} else {
$uri = REPOSITORY;
}
$uriparts = parse_url($uri);
$icon = $this->xml_encode($uriparts['scheme'] . '://' . $uriparts['host'] . '/favicon.ico');
$items = '';
foreach($this->getItems() as $item) {
$itemAuthor = isset($item['author']) ? $this->xml_encode($item['author']) : '';
$itemTitle = strip_tags(isset($item['title']) ? $this->xml_encode($item['title']) : '');
$itemUri = isset($item['uri']) ? $this->xml_encode($item['uri']) : '';
$itemTimestamp = isset($item['timestamp']) ? $this->xml_encode(date(DATE_RFC2822, $item['timestamp'])) : '';
$itemContent = isset($item['content']) ? $this->xml_encode($this->sanitizeHtml($item['content'])) : '';
$entryEnclosuresWarning = '';
$entryEnclosures = '';
if(isset($item['enclosures'])) {
$entryEnclosures .= '<enclosure url="'
. $this->xml_encode($item['enclosures'][0])
. '" type="' . getMimeType($item['enclosures'][0]) . '" />';
if(count($item['enclosures']) > 1) {
$entryEnclosures .= PHP_EOL;
$entryEnclosuresWarning = '&lt;br&gt;Warning:
Some media files might not be shown to you. Consider using the ATOM format instead!';
foreach($item['enclosures'] as $enclosure) {
$entryEnclosures .= '<atom:link rel="enclosure" href="'
. $enclosure . '" type="' . getMimeType($enclosure) . '" />'
. PHP_EOL;
}
}
}
$entryCategories = '';
if(isset($item['categories'])) {
foreach($item['categories'] as $category) {
$entryCategories .= '<category>'
. $category . '</category>'
. PHP_EOL;
}
}
$items .= <<<EOD
<item>
<title>{$itemTitle}</title>
<link>{$itemUri}</link>
<guid isPermaLink="true">{$itemUri}</guid>
<pubDate>{$itemTimestamp}</pubDate>
<description>{$itemContent}{$entryEnclosuresWarning}</description>
<author>{$itemAuthor}</author>
{$entryEnclosures}
{$entryCategories}
</item>
EOD;
}
$charset = $this->getCharset();
/* xml attributes need to have certain characters escaped to be w3c compliant */
$imageTitle = htmlspecialchars($title, ENT_COMPAT);
/* Data are prepared, now let's begin the "MAGIE !!!" */
$toReturn = <<<EOD
<?xml version="1.0" encoding="{$charset}"?>
<rss version="2.0"
xmlns:dc="http://purl.org/dc/elements/1.1/"
xmlns:media="http://search.yahoo.com/mrss/"
xmlns:atom="http://www.w3.org/2005/Atom">
<channel>
<title>{$title}</title>
<link>http{$https}://{$httpHost}{$httpInfo}/</link>
<description>{$title}</description>
<image url="{$icon}" title="{$imageTitle}" link="{$uri}"/>
<atom:link rel="alternate" type="text/html" href="{$uri}" />
<atom:link rel="self" href="http{$https}://{$httpHost}{$serverRequestUri}" />
{$items}
</channel>
</rss>
EOD;
// Remove invalid non-UTF8 characters
ini_set('mbstring.substitute_character', 'none');
$toReturn = mb_convert_encoding($toReturn, $this->getCharset(), 'UTF-8');
return $toReturn;
}
public function display(){
$this
->setContentType('application/rss+xml; charset=' . $this->getCharset())
->callContentType();
return parent::display();
}
private function xml_encode($text){
return htmlspecialchars($text, ENT_XML1);
}
}