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<?php |
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namespace League\Torrent\Helper; |
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class FileSystem |
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{ |
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/** |
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* |
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* @var int |
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*/ |
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const timeout = 30; |
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/** |
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* List of strings that can start a torrent file |
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* |
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* @static |
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* @var array |
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*/ |
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protected static $torrentsChecks = array('d8:announce', 'd10:created', 'd13:creatio', 'd4:info', 'd9:'); |
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public static function filesize($filename) |
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{ |
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if (is_file($filename)) { |
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return (double) sprintf('%u', @filesize($filename)); |
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} else { |
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if ($content_length = preg_grep($pattern = '#^Content-Length:\s+(\d+)$#i', (array) @get_headers($filename)) |
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) { |
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return (int) preg_replace($pattern, '$1', reset($content_length)); |
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} |
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} |
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} |
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/** |
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* pack data hash to binary |
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* |
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* @param $data |
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* |
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* @return string |
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*/ |
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public static function pack(& $data) |
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{ |
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return pack('H*', sha1($data)) . ($data = null); |
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} |
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/** |
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* @param $url |
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* |
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* @return int |
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*/ |
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public static function is_url($url) |
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{ |
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return preg_match('#^http(s)?://[a-z0-9-]+(.[a-z0-9-]+)*(:[0-9]+)?(/.*)?$#i', $url); |
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} |
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/** |
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* @param $url |
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* |
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* @return bool |
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*/ |
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public static function url_exists($url) |
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{ |
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return FileSystem::is_url($url) ? |
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(bool) FileSystem::filesize($url) : |
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false; |
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} |
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/** |
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* @param $announces |
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* |
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* @return array |
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*/ |
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public static function untier($announces) |
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{ |
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$list = array(); |
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foreach ((array) $announces as $tier) { |
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is_array($tier) ? |
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$list = array_merge($list, FileSystem::untier($tier)) : |
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array_push($list, $tier); |
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} |
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return $list; |
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} |
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/** |
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* @param $array |
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* |
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* @return bool |
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*/ |
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public static function is_list($array) |
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{ |
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foreach (array_keys($array) as $key) { |
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if (!is_int($key)) { |
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return false; |
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} |
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} |
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return true; |
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} |
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/** |
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* @param $path |
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* @param $folder |
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* |
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* @return string |
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*/ |
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public static function path($path, $folder) |
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{ |
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array_unshift($path, $folder); |
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return join(DIRECTORY_SEPARATOR, $path); |
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} |
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/** |
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* @param $dir |
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* |
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* @return array |
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*/ |
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public static function scandir($dir) |
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{ |
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$paths = array(); |
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foreach (scandir($dir) as $item) { |
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if ($item != '.' && $item != '..') { |
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if (is_dir($path = realpath($dir . DIRECTORY_SEPARATOR . $item))) { |
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$paths = array_merge(self::scandir($path), $paths); |
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} else { |
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$paths[] = $path; |
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} |
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} |
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} |
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return $paths; |
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} |
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/** |
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* @param $data |
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* |
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* @return bool|string |
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*/ |
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public static function char($data) |
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{ |
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return empty($data) ? |
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false : |
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substr($data, 0, 1); |
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} |
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public static function downloadTorrent($url, $timeout = self::timeout) |
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{ |
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if (ini_get('allow_url_fopen')) { |
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return self::downloadViaStream($url, $timeout); |
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} else { |
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return self::downloadViaCurl($url, $timeout); |
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} |
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} |
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151
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public static function downloadViaStream($url, $timeout = self::timeout) |
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{ |
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if (!ini_get('allow_url_fopen')) { |
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throw new \Exception('Install CURL or enable "allow_url_fopen"'); |
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} |
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157
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return file_get_contents($url, false, stream_context_create(array('http' => array('timeout' => $timeout)))); |
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} |
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160
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public static function downloadViaCurl($url, $timeout = self::timeout) |
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{ |
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if (!function_exists('curl_init')) { |
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throw new \Exception('Install CURL or enable "allow_url_fopen"'); |
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} |
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$handle = curl_init($url); |
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if ($timeout) { |
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curl_setopt($handle, CURLOPT_TIMEOUT, $timeout); |
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} |
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curl_setopt($handle, CURLOPT_RETURNTRANSFER, 1); |
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$content = curl_exec($handle); |
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curl_close($handle); |
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return $content; |
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} |
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/** |
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* @param $file |
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177
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* |
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* @return bool |
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*/ |
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public static function isTorrent($file) |
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{ |
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$start = substr($file, 0, 11); |
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$check = false; |
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foreach (self::$torrentsChecks as $value) { |
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if (0 === strpos($start, $value)) { |
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$check = true; |
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continue; |
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} |
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} |
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191
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return $check; |
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} |
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} |
iGusev /
torrent
