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 * This file is part of SwiftMailer.
 * (c) 2004-2009 Chris Corbyn
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.

 * An abstract means of reading data.
 * Classes implementing this interface may use a subsystem which requires less
 * memory than working with large strings of data.
 * @package Swift
 * @subpackage ByteStream
 * @author Chris Corbyn
interface Swift_OutputByteStream
   * Reads $length bytes from the stream into a string and moves the pointer
   * through the stream by $length. If less bytes exist than are requested the
   * remaining bytes are given instead. If no bytes are remaining at all, boolean
   * false is returned.
   * @param int $length
   * @return string
   * @throws Swift_IoException
  public function read($length);
   * Move the internal read pointer to $byteOffset in the stream.
   * @param int $byteOffset
   * @return boolean
   * @throws Swift_IoException
  public function setReadPointer($byteOffset);
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