public function stream_seek($offset, $whence)
{
return $this->stream->seek($offset, $whence);
}
/**
* Calculate a hash of a Stream
*
* @param puzzle_stream_StreamInterface $stream Stream to calculate the hash for
* @param string $algo Hash algorithm (e.g. md5, crc32, etc)
* @param bool $rawOutput Whether or not to use raw output
*
* @return string Returns the hash of the stream
* @throws puzzle_stream_exception_SeekException
*/
public static function hash(puzzle_stream_StreamInterface $stream, $algo, $rawOutput = false)
{
$pos = $stream->tell();
if ($pos > 0 && !$stream->seek(0)) {
throw new puzzle_stream_exception_SeekException($stream);
}
$ctx = hash_init($algo);
while (!$stream->eof()) {
hash_update($ctx, $stream->read(1048576));
}
$out = hash_final($ctx, (bool) $rawOutput);
$stream->seek($pos);
return $out;
}
/**
* {@inheritdoc}
*/
public function seek($offset, $whence = SEEK_SET)
{
return $this->_delegate->seek($offset, $whence);
}
