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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_Controller
* @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: Abstract.php 18951 2009-11-12 16:26:19Z alexander $
*/
/**
* Zend_Controller_Response_Abstract
*
* Base class for Zend_Controller responses
*
* @package Zend_Controller
* @subpackage Response
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
* @license http://framework.zend.com/license/new-bsd New BSD License
*/
abstract class Zend_Controller_Response_Abstract
{
/**
* Body content
* @var array
*/
protected $_body = array();
/**
* Exception stack
* @var Exception
*/
protected $_exceptions = array();
/**
* Array of headers. Each header is an array with keys 'name' and 'value'
* @var array
*/
protected $_headers = array();
/**
* Array of raw headers. Each header is a single string, the entire header to emit
* @var array
*/
protected $_headersRaw = array();
/**
* HTTP response code to use in headers
* @var int
*/
protected $_httpResponseCode = 200;
/**
* Flag; is this response a redirect?
* @var boolean
*/
protected $_isRedirect = false;
/**
* Whether or not to render exceptions; off by default
* @var boolean
*/
protected $_renderExceptions = false;
/**
* Flag; if true, when header operations are called after headers have been
* sent, an exception will be raised; otherwise, processing will continue
* as normal. Defaults to true.
*
* @see canSendHeaders()
* @var boolean
*/
public $headersSentThrowsException = true;
/**
* Normalize a header name
*
* Normalizes a header name to X-Capitalized-Names
*
* @param string $name
* @return string
*/
protected function _normalizeHeader($name)
{
$filtered = str_replace(array('-', '_'), ' ', (string) $name);
$filtered = ucwords(strtolower($filtered));
$filtered = str_replace(' ', '-', $filtered);
return $filtered;
}
/**
* Set a header
*
* If $replace is true, replaces any headers already defined with that
* $name.
*
* @param string $name
* @param string $value
* @param boolean $replace
* @return Zend_Controller_Response_Abstract
*/
public function setHeader($name, $value, $replace = false)
{
$this->canSendHeaders(true);
$name = $this->_normalizeHeader($name);
$value = (string) $value;
if ($replace) {
foreach ($this->_headers as $key => $header) {
if ($name == $header['name']) {
unset($this->_headers[$key]);
}
}
}
$this->_headers[] = array(
'name' => $name,
'value' => $value,
'replace' => $replace
);
return $this;
}
/**
* Set redirect URL
*
* Sets Location header and response code. Forces replacement of any prior
* redirects.
*
* @param string $url
* @param int $code
* @return Zend_Controller_Response_Abstract
*/
public function setRedirect($url, $code = 302)
{
$this->canSendHeaders(true);
$this->setHeader('Location', $url, true)
->setHttpResponseCode($code);
return $this;
}
/**
* Is this a redirect?
*
* @return boolean
*/
public function isRedirect()
{
return $this->_isRedirect;
}
/**
* Return array of headers; see {@link $_headers} for format
*
* @return array
*/
public function getHeaders()
{
return $this->_headers;
}
/**
* Clear headers
*
* @return Zend_Controller_Response_Abstract
*/
public function clearHeaders()
{
$this->_headers = array();
return $this;
}
/**
* Set raw HTTP header
*
* Allows setting non key => value headers, such as status codes
*
* @param string $value
* @return Zend_Controller_Response_Abstract
*/
public function setRawHeader($value)
{
$this->canSendHeaders(true);
if ('Location' == substr($value, 0, 8)) {
$this->_isRedirect = true;
}
$this->_headersRaw[] = (string) $value;
return $this;
}
/**
* Retrieve all {@link setRawHeader() raw HTTP headers}
*
* @return array
*/
public function getRawHeaders()
{
return $this->_headersRaw;
}
/**
* Clear all {@link setRawHeader() raw HTTP headers}
*
* @return Zend_Controller_Response_Abstract
*/
public function clearRawHeaders()
{
$this->_headersRaw = array();
return $this;
}
/**
* Clear all headers, normal and raw
*
* @return Zend_Controller_Response_Abstract
*/
public function clearAllHeaders()
{
return $this->clearHeaders()
->clearRawHeaders();
}
/**
* Set HTTP response code to use with headers
*
* @param int $code
* @return Zend_Controller_Response_Abstract
*/
public function setHttpResponseCode($code)
{
if (!is_int($code) || (100 > $code) || (599 < $code)) {
require_once 'Zend/Controller/Response/Exception.php';
throw new Zend_Controller_Response_Exception('Invalid HTTP response code');
}
if ((300 <= $code) && (307 >= $code)) {
$this->_isRedirect = true;
} else {
$this->_isRedirect = false;
}
$this->_httpResponseCode = $code;
return $this;
}
/**
* Retrieve HTTP response code
*
* @return int
*/
public function getHttpResponseCode()
{
return $this->_httpResponseCode;
}
/**
* Can we send headers?
*
* @param boolean $throw Whether or not to throw an exception if headers have been sent; defaults to false
* @return boolean
* @throws Zend_Controller_Response_Exception
*/
public function canSendHeaders($throw = false)
{
$ok = headers_sent($file, $line);
if ($ok && $throw && $this->headersSentThrowsException) {
require_once 'Zend/Controller/Response/Exception.php';
throw new Zend_Controller_Response_Exception('Cannot send headers; headers already sent in ' . $file . ', line ' . $line);
}
return !$ok;
}
/**
* Send all headers
*
* Sends any headers specified. If an {@link setHttpResponseCode() HTTP response code}
* has been specified, it is sent with the first header.
*
* @return Zend_Controller_Response_Abstract
*/
public function sendHeaders()
{
// Only check if we can send headers if we have headers to send
if (count($this->_headersRaw) || count($this->_headers) || (200 != $this->_httpResponseCode)) {
$this->canSendHeaders(true);
} elseif (200 == $this->_httpResponseCode) {
// Haven't changed the response code, and we have no headers
return $this;
}
$httpCodeSent = false;
foreach ($this->_headersRaw as $header) {
if (!$httpCodeSent && $this->_httpResponseCode) {
header($header, true, $this->_httpResponseCode);
$httpCodeSent = true;
} else {
header($header);
}
}
foreach ($this->_headers as $header) {
if (!$httpCodeSent && $this->_httpResponseCode) {
header($header['name'] . ': ' . $header['value'], $header['replace'], $this->_httpResponseCode);
$httpCodeSent = true;
} else {
header($header['name'] . ': ' . $header['value'], $header['replace']);
}
}
if (!$httpCodeSent) {
header('HTTP/1.1 ' . $this->_httpResponseCode);
$httpCodeSent = true;
}
return $this;
}
/**
* Set body content
*
* If $name is not passed, or is not a string, resets the entire body and
* sets the 'default' key to $content.
*
* If $name is a string, sets the named segment in the body array to
* $content.
*
* @param string $content
* @param null|string $name
* @return Zend_Controller_Response_Abstract
*/
public function setBody($content, $name = null)
{
if ((null === $name) || !is_string($name)) {
$this->_body = array('default' => (string) $content);
} else {
$this->_body[$name] = (string) $content;
}
return $this;
}
/**
* Append content to the body content
*
* @param string $content
* @param null|string $name
* @return Zend_Controller_Response_Abstract
*/
public function appendBody($content, $name = null)
{
if ((null === $name) || !is_string($name)) {
if (isset($this->_body['default'])) {
$this->_body['default'] .= (string) $content;
} else {
return $this->append('default', $content);
}
} elseif (isset($this->_body[$name])) {
$this->_body[$name] .= (string) $content;
} else {
return $this->append($name, $content);
}
return $this;
}
/**
* Clear body array
*
* With no arguments, clears the entire body array. Given a $name, clears
* just that named segment; if no segment matching $name exists, returns
* false to indicate an error.
*
* @param string $name Named segment to clear
* @return boolean
*/
public function clearBody($name = null)
{
if (null !== $name) {
$name = (string) $name;
if (isset($this->_body[$name])) {
unset($this->_body[$name]);
return true;
}
return false;
}
$this->_body = array();
return true;
}
/**
* Return the body content
*
* If $spec is false, returns the concatenated values of the body content
* array. If $spec is boolean true, returns the body content array. If
* $spec is a string and matches a named segment, returns the contents of
* that segment; otherwise, returns null.
*
* @param boolean $spec
* @return string|array|null
*/
public function getBody($spec = false)
{
if (false === $spec) {
ob_start();
$this->outputBody();
return ob_get_clean();
} elseif (true === $spec) {
return $this->_body;
} elseif (is_string($spec) && isset($this->_body[$spec])) {
return $this->_body[$spec];
}
return null;
}
/**
* Append a named body segment to the body content array
*
* If segment already exists, replaces with $content and places at end of
* array.
*
* @param string $name
* @param string $content
* @return Zend_Controller_Response_Abstract
*/
public function append($name, $content)
{
if (!is_string($name)) {
require_once 'Zend/Controller/Response/Exception.php';
throw new Zend_Controller_Response_Exception('Invalid body segment key ("' . gettype($name) . '")');
}
if (isset($this->_body[$name])) {
unset($this->_body[$name]);
}
$this->_body[$name] = (string) $content;
return $this;
}
/**
* Prepend a named body segment to the body content array
*
* If segment already exists, replaces with $content and places at top of
* array.
*
* @param string $name
* @param string $content
* @return void
*/
public function prepend($name, $content)
{
if (!is_string($name)) {
require_once 'Zend/Controller/Response/Exception.php';
throw new Zend_Controller_Response_Exception('Invalid body segment key ("' . gettype($name) . '")');
}
if (isset($this->_body[$name])) {
unset($this->_body[$name]);
}
$new = array($name => (string) $content);
$this->_body = $new + $this->_body;
return $this;
}
/**
* Insert a named segment into the body content array
*
* @param string $name
* @param string $content
* @param string $parent
* @param boolean $before Whether to insert the new segment before or
* after the parent. Defaults to false (after)
* @return Zend_Controller_Response_Abstract
*/
public function insert($name, $content, $parent = null, $before = false)
{
if (!is_string($name)) {
require_once 'Zend/Controller/Response/Exception.php';
throw new Zend_Controller_Response_Exception('Invalid body segment key ("' . gettype($name) . '")');
}
if ((null !== $parent) && !is_string($parent)) {
require_once 'Zend/Controller/Response/Exception.php';
throw new Zend_Controller_Response_Exception('Invalid body segment parent key ("' . gettype($parent) . '")');
}
if (isset($this->_body[$name])) {
unset($this->_body[$name]);
}
if ((null === $parent) || !isset($this->_body[$parent])) {
return $this->append($name, $content);
}
$ins = array($name => (string) $content);
$keys = array_keys($this->_body);
$loc = array_search($parent, $keys);
if (!$before) {
// Increment location if not inserting before
++$loc;
}
if (0 === $loc) {
// If location of key is 0, we're prepending
$this->_body = $ins + $this->_body;
} elseif ($loc >= (count($this->_body))) {
// If location of key is maximal, we're appending
$this->_body = $this->_body + $ins;
} else {
// Otherwise, insert at location specified
$pre = array_slice($this->_body, 0, $loc);
$post = array_slice($this->_body, $loc);
$this->_body = $pre + $ins + $post;
}
return $this;
}
/**
* Echo the body segments
*
* @return void
*/
public function outputBody()
{
$body = implode('', $this->_body);
echo $body;
}
/**
* Register an exception with the response
*
* @param Exception $e
* @return Zend_Controller_Response_Abstract
*/
public function setException(Exception $e)
{
$this->_exceptions[] = $e;
return $this;
}
/**
* Retrieve the exception stack
*
* @return array
*/
public function getException()
{
return $this->_exceptions;
}
/**
* Has an exception been registered with the response?
*
* @return boolean
*/
public function isException()
{
return !empty($this->_exceptions);
}
/**
* Does the response object contain an exception of a given type?
*
* @param string $type
* @return boolean
*/
public function hasExceptionOfType($type)
{
foreach ($this->_exceptions as $e) {
if ($e instanceof $type) {
return true;
}
}
return false;
}
/**
* Does the response object contain an exception with a given message?
*
* @param string $message
* @return boolean
*/
public function hasExceptionOfMessage($message)
{
foreach ($this->_exceptions as $e) {
if ($message == $e->getMessage()) {
return true;
}
}
return false;
}
/**
* Does the response object contain an exception with a given code?
*
* @param int $code
* @return boolean
*/
public function hasExceptionOfCode($code)
{
$code = (int) $code;
foreach ($this->_exceptions as $e) {
if ($code == $e->getCode()) {
return true;
}
}
return false;
}
/**
* Retrieve all exceptions of a given type
*
* @param string $type
* @return false|array
*/
public function getExceptionByType($type)
{
$exceptions = array();
foreach ($this->_exceptions as $e) {
if ($e instanceof $type) {
$exceptions[] = $e;
}
}
if (empty($exceptions)) {
$exceptions = false;
}
return $exceptions;
}
/**
* Retrieve all exceptions of a given message
*
* @param string $message
* @return false|array
*/
public function getExceptionByMessage($message)
{
$exceptions = array();
foreach ($this->_exceptions as $e) {
if ($message == $e->getMessage()) {
$exceptions[] = $e;
}
}
if (empty($exceptions)) {
$exceptions = false;
}
return $exceptions;
}
/**
* Retrieve all exceptions of a given code
*
* @param mixed $code
* @return void
*/
public function getExceptionByCode($code)
{
$code = (int) $code;
$exceptions = array();
foreach ($this->_exceptions as $e) {
if ($code == $e->getCode()) {
$exceptions[] = $e;
}
}
if (empty($exceptions)) {
$exceptions = false;
}
return $exceptions;
}
/**
* Whether or not to render exceptions (off by default)
*
* If called with no arguments or a null argument, returns the value of the
* flag; otherwise, sets it and returns the current value.
*
* @param boolean $flag Optional
* @return boolean
*/
public function renderExceptions($flag = null)
{
if (null !== $flag) {
$this->_renderExceptions = $flag ? true : false;
}
return $this->_renderExceptions;
}
/**
* Send the response, including all headers, rendering exceptions if so
* requested.
*
* @return void
*/
public function sendResponse()
{
$this->sendHeaders();
if ($this->isException() && $this->renderExceptions()) {
$exceptions = '';
foreach ($this->getException() as $e) {
$exceptions .= $e->__toString() . "\n";
}
echo $exceptions;
return;
}
$this->outputBody();
}
/**
* Magic __toString functionality
*
* Proxies to {@link sendResponse()} and returns response value as string
* using output buffering.
*
* @return string
*/
public function __toString()
{
ob_start();
$this->sendResponse();
return ob_get_clean();
}
}
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