/usr/share/php/PicoFeed/Syndication/Writer.php is in php-picofeed 0.1.18-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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namespace PicoFeed\Syndication;
use RuntimeException;
/**
* Base writer class.
*
* @author Frederic Guillot
*/
abstract class Writer
{
/**
* Dom object.
*
* @var \DomDocument
*/
protected $dom;
/**
* Items.
*
* @var array
*/
public $items = array();
/**
* Author.
*
* @var array
*/
public $author = array();
/**
* Feed URL.
*
* @var string
*/
public $feed_url = '';
/**
* Website URL.
*
* @var string
*/
public $site_url = '';
/**
* Feed title.
*
* @var string
*/
public $title = '';
/**
* Feed description.
*
* @var string
*/
public $description = '';
/**
* Feed modification date (timestamp).
*
* @var int
*/
public $updated = 0;
/**
* Generate the XML document.
*
* @abstract
*
* @param string $filename Optional filename
*
* @return string
*/
abstract public function execute($filename = '');
/**
* Check required properties to generate the output.
*
* @param array $properties List of properties
* @param mixed $container Object or array container
*/
public function checkRequiredProperties(array $properties, $container)
{
foreach ($properties as $property) {
if ((is_object($container) && !isset($container->$property)) || (is_array($container) && !isset($container[$property]))) {
throw new RuntimeException('Required property missing: '.$property);
}
}
}
}
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