/**
* Save the current torrent object to the filename specified
*
* This method will save the current object to a file. If the file specified exists it will be overwritten.
*
* @param string $filename
* @param boolean $write
* @throws PHP_BitTorrent_Torrent_Exception
* @return PHP_BitTorrent_Torrent
*/
public function save($filename, $write = true)
{
if (!is_writable($filename) && !is_writable(dirname($filename))) {
throw new PHP_BitTorrent_Torrent_Exception('Could not open file "' . $filename . '" for writing.');
}
$announce = $this->getAnnounce();
if (empty($announce)) {
throw new PHP_BitTorrent_Torrent_Exception('Announce URL is missing.');
}
$info = $this->getInfo();
if (empty($info)) {
throw new PHP_BitTorrent_Torrent_Exception('The info part of the torrent is empty.');
}
$createdAt = $this->getCreatedAt();
if (empty($createdAt)) {
$createdAt = time();
}
$torrent = array('announce' => $announce, 'creation date' => $createdAt, 'info' => $info);
if (($comment = $this->getComment()) !== null) {
$torrent['comment'] = $comment;
}
if (($createdBy = $this->getCreatedBy()) !== null) {
$torrent['created by'] = $createdBy;
}
// Create the encoded dictionary
$dictionary = PHP_BitTorrent_Encoder::encodeDictionary($torrent);
// Write the encoded data to the file
if ($write) {
file_put_contents($filename, $dictionary);
} else {
return $dictionary;
}
return $this;
}
