Location: PHPKode > projects > GnomePHP > peec-GnomePHP-b5a360b/gnomephp/libs/swiftmailer/classes/Swift/CharacterStream.php
<?php

/*
 * 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.
 */

require_once dirname(__FILE__) . '/OutputByteStream.php';
require_once dirname(__FILE__) . '/CharacterReaderFactory.php';


/**
 * An abstract means of reading and writing data in terms of characters as opposed
 * to bytes.
 * Classes implementing this interface may use a subsystem which requires less
 * memory than working with large strings of data.
 * @package Swift
 * @subpackage CharacterStream
 * @author Chris Corbyn
 */
interface Swift_CharacterStream
{

  /**
   * Set the character set used in this CharacterStream.
   * @param string $charset
   */
  public function setCharacterSet($charset);
  
  /**
   * Set the CharacterReaderFactory for multi charset support.
   * @param Swift_CharacterReaderFactory $factory
   */
  public function setCharacterReaderFactory(
    Swift_CharacterReaderFactory $factory);
  
  /**
   * Overwrite this character stream using the byte sequence in the byte stream.
   * @param Swift_OutputByteStream $os output stream to read from
   */
  public function importByteStream(Swift_OutputByteStream $os);
  
  /**
   * Import a string a bytes into this CharacterStream, overwriting any existing
   * data in the stream.
   * @param string $string
   */
  public function importString($string);
  
  /**
   * Read $length characters from the stream and move the internal pointer
   * $length further into the stream.
   * @param int $length
   * @return string
   */
  public function read($length);
  
  /**
   * Read $length characters from the stream and return a 1-dimensional array
   * containing there octet values.
   * @param int $length
   * @return int[]
   */
  public function readBytes($length);
  
  /**
   * Write $chars to the end of the stream.
   * @param string $chars
   */
  public function write($chars);
  
  /**
   * Move the internal pointer to $charOffset in the stream.
   * @param int $charOffset
   */
  public function setPointer($charOffset);
  
  /**
   * Empty the stream and reset the internal pointer.
   */
  public function flushContents();
  
}
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