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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) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @version $Id: MediaMimeStream.php 20096 2010-01-06 02:05:09Z bkarwin $
*/
/**
* @see Zend_Gdata_MimeFile
*/
require_once 'Zend/Gdata/MimeFile.php';
/**
* @see Zend_Gdata_MimeBodyString
*/
require_once 'Zend/Gdata/MimeBodyString.php';
/**
* A streaming Media MIME class that allows for buffered read operations.
*
* @category Zend
* @package Zend_Gdata
* @subpackage Gdata
* @copyright Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
class Zend_Gdata_MediaMimeStream
{
/**
* A valid MIME boundary.
*
* @var string
*/
protected $_boundaryString = null;
/**
* A handle to the file that is part of the message.
*
* @var resource
*/
protected $_fileHandle = null;
/**
* The current part being read from.
* @var integer
*/
protected $_currentPart = 0;
/**
* The size of the MIME message.
* @var integer
*/
protected $_totalSize = 0;
/**
* An array of all the parts to be sent. Array members are either a
* MimeFile or a MimeBodyString object.
* @var array
*/
protected $_parts = null;
/**
* Create a new MimeMediaStream object.
*
* @param string $xmlString The string corresponding to the XML section
* of the message, typically an atom entry or feed.
* @param string $filePath The path to the file that constitutes the binary
* part of the message.
* @param string $fileContentType The valid internet media type of the file.
* @throws Zend_Gdata_App_IOException If the file cannot be read or does
* not exist. Also if mbstring.func_overload has been set > 1.
*/
public function __construct($xmlString = null, $filePath = null,
$fileContentType = null)
{
if (!file_exists($filePath) || !is_readable($filePath)) {
require_once 'Zend/Gdata/App/IOException.php';
throw new Zend_Gdata_App_IOException('File to be uploaded at ' .
$filePath . ' does not exist or is not readable.');
}
$this->_fileHandle = fopen($filePath, 'rb', TRUE);
$this->_boundaryString = '=_' . md5(microtime(1) . rand(1,20));
$entry = $this->wrapEntry($xmlString, $fileContentType);
$closingBoundary = new Zend_Gdata_MimeBodyString("\r\n--{$this->_boundaryString}--\r\n");
$file = new Zend_Gdata_MimeFile($this->_fileHandle);
$this->_parts = array($entry, $file, $closingBoundary);
$fileSize = filesize($filePath);
$this->_totalSize = $entry->getSize() + $fileSize
+ $closingBoundary->getSize();
}
/**
* Sandwiches the entry body into a MIME message
*
* @return void
*/
private function wrapEntry($entry, $fileMimeType)
{
$wrappedEntry = "--{$this->_boundaryString}\r\n";
$wrappedEntry .= "Content-Type: application/atom+xml\r\n\r\n";
$wrappedEntry .= $entry;
$wrappedEntry .= "\r\n--{$this->_boundaryString}\r\n";
$wrappedEntry .= "Content-Type: $fileMimeType\r\n\r\n";
return new Zend_Gdata_MimeBodyString($wrappedEntry);
}
/**
* Read a specific chunk of the the MIME multipart message.
*
* @param integer $bufferSize The size of the chunk that is to be read,
* must be lower than MAX_BUFFER_SIZE.
* @return string A corresponding piece of the message. This could be
* binary or regular text.
*/
public function read($bytesRequested)
{
if($this->_currentPart >= count($this->_parts)) {
return FALSE;
}
$activePart = $this->_parts[$this->_currentPart];
$buffer = $activePart->read($bytesRequested);
while(strlen($buffer) < $bytesRequested) {
$this->_currentPart += 1;
$nextBuffer = $this->read($bytesRequested - strlen($buffer));
if($nextBuffer === FALSE) {
break;
}
$buffer .= $nextBuffer;
}
return $buffer;
}
/**
* Return the total size of the mime message.
*
* @return integer Total size of the message to be sent.
*/
public function getTotalSize()
{
return $this->_totalSize;
}
/**
* Close the internal file that we are streaming to the socket.
*
* @return void
*/
public function closeFileHandle()
{
if ($this->_fileHandle !== null) {
fclose($this->_fileHandle);
}
}
/**
* Return a Content-type header that includes the current boundary string.
*
* @return string A valid HTTP Content-Type header.
*/
public function getContentType()
{
return 'multipart/related;boundary="' .
$this->_boundaryString . '"' . "\r\n";
}
}
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