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<?php
/**
* Zend Framework
*
* LICENSE
*
* This source file is subject to the new BSD license that is bundled
* with this package in the file LICENSE.txt.
* It is also available through the world-wide-web at this URL:
* http://framework.zend.com/license/new-bsd
* If you did not receive a copy of the license and are unable to
* obtain it through the world-wide-web, please send an email
* to license@zend.com so we can send you a copy immediately.
*
* @category Zend
* @package Zend_Gdata
* @subpackage Gdata
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: MimeBodyString.php 16971 2009-07-22 18:05:45Z mikaelkael $
*/
/**
* A wrapper for strings for buffered reading.
*
* @category Zend
* @package Zend_Gdata_MimeBodyString
* @subpackage Gdata
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Gdata_MimeBodyString
{
/**
* The source string.
*
* @var string
*/
protected $_sourceString = '';
/**
* The size of the MIME message.
* @var integer
*/
protected $_bytesRead = 0;
/**
* Create a new MimeBodyString object.
*
* @param string $sourceString The string we are wrapping.
*/
public function __construct($sourceString)
{
$this->_sourceString = $sourceString;
$this->_bytesRead = 0;
}
/**
* Read the next chunk of the string.
*
* @param integer $bytesRequested The size of the chunk that is to be read.
* @return string A corresponding piece of the string.
*/
public function read($bytesRequested)
{
$len = strlen($this->_sourceString);
if($this->_bytesRead == $len) {
return FALSE;
} else if($bytesRequested > $len - $this->_bytesRead) {
$bytesRequested = $len - $this->_bytesRead;
}
$buffer = substr($this->_sourceString, $this->_bytesRead, $bytesRequested);
$this->_bytesRead += $bytesRequested;
return $buffer;
}
/**
* The length of the string.
*
* @return int The length of the string contained in the object.
*/
public function getSize()
{
return strlen($this->_sourceString);
}
}
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