Файл: concrete5.7.5.6/concrete/vendor/zendframework/zend-queue/library/ZendQueue/Stomp/Frame.php
Строк: 343
<?php
/**
* Zend Framework (http://framework.zend.com/)
*
* @link http://github.com/zendframework/zf2 for the canonical source repository
* @copyright Copyright (c) 2005-2012 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
* @package Zend_Queue
*/
namespace ZendQueueStomp;
use ZendQueueException;
/**
* This class represents a Stomp Frame
*
* @category Zend
* @package Zend_Queue
* @subpackage Stomp
*/
class Frame implements StompFrame
{
const END_OF_FRAME = "x00n";
const CONTENT_LENGTH = 'content-length';
const EOL = "n";
/**
* Headers for the frame
*
* @var array
*/
protected $_headers = array();
/**
* The command for the frame
*
* @var string
*/
protected $_command = null;
/**
* The body of the frame
*
* @var string
*/
protected $_body = null;
/**
* Do the content-length automatically?
*/
protected $_autoContentLength = null;
/**
* Constructor
*/
public function __construct()
{
$this->setHeaders(array());
$this->setBody(null);
$this->setCommand(null);
$this->setAutoContentLength(true);
}
/**
* get the status of the auto content length
*
* If AutoContentLength is true this code will automatically put the
* content-length header in, even if it is already set by the user.
*
* This is done to make the message sending more reliable.
*
* @return boolean
*/
public function getAutoContentLength()
{
return $this->_autoContentLength;
}
/**
* setAutoContentLength()
*
* Set the value on or off.
*
* @param boolean $auto
* @return $this;
* @throws ZendQueueException
*/
public function setAutoContentLength($auto)
{
if (!is_bool($auto)) {
throw new ExceptionInvalidArgumentException('$auto is not a boolean');
}
$this->_autoContentLength = $auto;
return $this;
}
/**
* Get the headers
*
* @return array
*/
public function getHeaders()
{
return $this->_headers;
}
/**
* Set the headers
*
* Throws an exception if the array values are not strings.
*
* @param array $headers
* @return $this
* @throws ZendQueueException
*/
public function setHeaders(array $headers)
{
foreach ($headers as $header => $value) {
$this->setHeader($header, $value);
}
return $this;
}
/**
* Sets a value for a header
*
* @param string $header
* @param string $value
* @return ZendQueueStompFrame
* @throws ZendQueueException
*/
public function setHeader($header, $value)
{
if (!is_string($header)) {
throw new ExceptionInvalidArgumentException('$header is not a string: ' . print_r($header, true));
}
if (!is_scalar($value)) {
throw new ExceptionInvalidArgumentException('$value is not a string: ' . print_r($value, true));
}
$this->_headers[$header] = $value;
return $this;
}
/**
* Returns a value for a header
*
* Returns false if the header does not exist.
*
* @param string $header
* @return string|false
* @throws ZendQueueException
*/
public function getHeader($header)
{
if (!is_string($header)) {
throw new ExceptionInvalidArgumentException('$header is not a string');
}
return isset($this->_headers[$header])
? $this->_headers[$header]
: false;
}
/**
* Return the body for this frame
*
* Returns false if the body does not exist
*
* @return false|string
*/
public function getBody()
{
return $this->_body === null
? false
: $this->_body;
}
/**
* Set the body for this frame
*
* Set to null for no body.
*
* @param string|null $body
* @return ZendQueueStompFrame
* @throws ZendQueueException
*/
public function setBody($body)
{
if (!is_string($body) && $body !== null) {
throw new ExceptionInvalidArgumentException('$body is not a string or null');
}
$this->_body = $body;
return $this;
}
/**
* Return the command for this frame
*
* Return false if the command does not exist
*
* @return string|false
*/
public function getCommand()
{
return $this->_command === null
? false
: $this->_command;
}
/**
* Set the body for this frame
*
* @param string|null
* @return ZendQueueStompFrame
* @throws ZendQueueException
*/
public function setCommand($command)
{
if (!is_string($command) && $command !== null) {
throw new ExceptionInvalidArgumentException('$command is not a string or null');
}
$this->_command = $command;
return $this;
}
/**
* Takes the current parameters and returns a Stomp Frame
*
* @return string
* @throws ZendQueueException
*/
public function toFrame()
{
if ($this->getCommand() === false) {
throw new ExceptionLogicException('You must set the command');
}
$command = $this->getCommand();
$headers = $this->getHeaders();
$body = $this->getBody();
$frame = '';
// add a content-length to the SEND command.
// @see http://stomp.codehaus.org/Protocol
if ($this->getAutoContentLength()) {
$headers[self::CONTENT_LENGTH] = strlen($this->getBody());
}
// Command
$frame = $command . self::EOL;
// Headers
foreach ($headers as $key=>$value) {
$frame .= $key . ':' . $value . self::EOL;
}
// Seperator
$frame .= self::EOL; // blank line required by protocol
// add the body if any
if ($body !== false) {
$frame .= $body;
}
$frame .= self::END_OF_FRAME;
return $frame;
}
/**
* @see toFrame()
* @return string
*/
public function __toString()
{
try {
$return = $this->toFrame();
} catch (ExceptionExceptionInterface $e) {
$return = '';
}
return $return;
}
/**
* Extract the Command from a response string frame or returns false
*
* @param string $frame - a stomp frame
* @return string|false
*/
public static function extractCommand($frame)
{
// todo: Commands are in caps per spec, this is not checked here
if (preg_match("|^([A-Z]+)n|i", $frame, $m) == 1) {
return $m[1];
}
return false;
}
/**
* Extract the headers from a response string
*
* @param string $frame - a stromp frame
* @return array
*/
public static function extractHeaders($frame)
{
$parts = preg_split('|(?:r?n){2}n|m', $frame, 2);
if (!isset($parts[0])) {
return array();
}
if (!preg_match_all("|([w-]+):s*(.+)n|", $parts[0], $m, PREG_SET_ORDER)) {
return array();
}
$headers = array();
foreach ($m as $header) {
$headers[mb_strtolower($header[1])] = $header[2];
}
return $headers;
}
/**
* Extract the body from a response string
*
* @param string $frame - a stomp frame
* @return string
* @throws ZendQueueException when the body is badly formatted
*/
public static function extractBody($frame)
{
$parts = preg_split('|(?:r?n){2}|m', $frame, 2);
if (!isset($parts[1])) {
return '';
}
if (substr($parts[1], -2) != self::END_OF_FRAME) {
throw new ExceptionDomainException('badly formatted body not frame terminated');
}
return substr($parts[1], 0, -2);
}
/**
* Accepts a frame and deconstructs the frame into its component parts
*
* @param string $frame - a stomp frame
* @return $this
*/
public function fromFrame($frame)
{
if (!is_string($frame)) {
throw new ExceptionInvalidArgumentException('$frame is not a string');
}
$this->setCommand(self::extractCommand($frame));
$this->setHeaders(self::extractHeaders($frame));
$this->setBody(self::extractBody($frame));
return $this;
}
}