diff -r 000000000000 -r 7f95f8617b0b vendor/symfony/src/Symfony/Component/HttpFoundation/Response.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/vendor/symfony/src/Symfony/Component/HttpFoundation/Response.php	Sat Sep 24 15:40:41 2011 +0200
@@ -0,0 +1,891 @@
+<?php
+
+/*
+ * This file is part of the Symfony package.
+ *
+ * (c) Fabien Potencier <fabien@symfony.com>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+namespace Symfony\Component\HttpFoundation;
+
+/**
+ * Response represents an HTTP response.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ *
+ * @api
+ */
+class Response
+{
+    /**
+     * @var \Symfony\Component\HttpFoundation\ResponseHeaderBag
+     */
+    public $headers;
+
+    protected $content;
+    protected $version;
+    protected $statusCode;
+    protected $statusText;
+    protected $charset;
+
+    static public $statusTexts = array(
+        100 => 'Continue',
+        101 => 'Switching Protocols',
+        200 => 'OK',
+        201 => 'Created',
+        202 => 'Accepted',
+        203 => 'Non-Authoritative Information',
+        204 => 'No Content',
+        205 => 'Reset Content',
+        206 => 'Partial Content',
+        300 => 'Multiple Choices',
+        301 => 'Moved Permanently',
+        302 => 'Found',
+        303 => 'See Other',
+        304 => 'Not Modified',
+        305 => 'Use Proxy',
+        307 => 'Temporary Redirect',
+        400 => 'Bad Request',
+        401 => 'Unauthorized',
+        402 => 'Payment Required',
+        403 => 'Forbidden',
+        404 => 'Not Found',
+        405 => 'Method Not Allowed',
+        406 => 'Not Acceptable',
+        407 => 'Proxy Authentication Required',
+        408 => 'Request Timeout',
+        409 => 'Conflict',
+        410 => 'Gone',
+        411 => 'Length Required',
+        412 => 'Precondition Failed',
+        413 => 'Request Entity Too Large',
+        414 => 'Request-URI Too Long',
+        415 => 'Unsupported Media Type',
+        416 => 'Requested Range Not Satisfiable',
+        417 => 'Expectation Failed',
+        418 => 'I\'m a teapot',
+        500 => 'Internal Server Error',
+        501 => 'Not Implemented',
+        502 => 'Bad Gateway',
+        503 => 'Service Unavailable',
+        504 => 'Gateway Timeout',
+        505 => 'HTTP Version Not Supported',
+    );
+
+    /**
+     * Constructor.
+     *
+     * @param string  $content The response content
+     * @param integer $status  The response status code
+     * @param array   $headers An array of response headers
+     *
+     * @api
+     */
+    public function __construct($content = '', $status = 200, $headers = array())
+    {
+        $this->headers = new ResponseHeaderBag($headers);
+        $this->setContent($content);
+        $this->setStatusCode($status);
+        $this->setProtocolVersion('1.0');
+        if (!$this->headers->has('Date')) {
+            $this->setDate(new \DateTime(null, new \DateTimeZone('UTC')));
+        }
+    }
+
+    /**
+     * Returns the response content as it will be sent (with the headers).
+     *
+     * @return string The response content
+     */
+    public function __toString()
+    {
+        $this->prepare();
+
+        return
+            sprintf('HTTP/%s %s %s', $this->version, $this->statusCode, $this->statusText)."\r\n".
+            $this->headers."\r\n".
+            $this->getContent();
+    }
+
+    /**
+     * Clones the current Response instance.
+     */
+    public function __clone()
+    {
+        $this->headers = clone $this->headers;
+    }
+
+    /**
+     * Prepares the Response before it is sent to the client.
+     *
+     * This method tweaks the Response to ensure that it is
+     * compliant with RFC 2616.
+     */
+    public function prepare()
+    {
+        if ($this->isInformational() || in_array($this->statusCode, array(204, 304))) {
+            $this->setContent('');
+        }
+
+        // Fix Content-Type
+        $charset = $this->charset ?: 'UTF-8';
+        if (!$this->headers->has('Content-Type')) {
+            $this->headers->set('Content-Type', 'text/html; charset='.$charset);
+        } elseif ('text/' === substr($this->headers->get('Content-Type'), 0, 5) && false === strpos($this->headers->get('Content-Type'), 'charset')) {
+            // add the charset
+            $this->headers->set('Content-Type', $this->headers->get('Content-Type').'; charset='.$charset);
+        }
+
+        // Fix Content-Length
+        if ($this->headers->has('Transfer-Encoding')) {
+            $this->headers->remove('Content-Length');
+        }
+    }
+
+    /**
+     * Sends HTTP headers.
+     */
+    public function sendHeaders()
+    {
+        // headers have already been sent by the developer
+        if (headers_sent()) {
+            return;
+        }
+
+        $this->prepare();
+
+        // status
+        header(sprintf('HTTP/%s %s %s', $this->version, $this->statusCode, $this->statusText));
+
+        // headers
+        foreach ($this->headers->all() as $name => $values) {
+            foreach ($values as $value) {
+                header($name.': '.$value, false);
+            }
+        }
+
+        // cookies
+        foreach ($this->headers->getCookies() as $cookie) {
+            setcookie($cookie->getName(), $cookie->getValue(), $cookie->getExpiresTime(), $cookie->getPath(), $cookie->getDomain(), $cookie->isSecure(), $cookie->isHttpOnly());
+        }
+    }
+
+    /**
+     * Sends content for the current web response.
+     */
+    public function sendContent()
+    {
+        echo $this->content;
+    }
+
+    /**
+     * Sends HTTP headers and content.
+     *
+     * @api
+     */
+    public function send()
+    {
+        $this->sendHeaders();
+        $this->sendContent();
+
+        if (function_exists('fastcgi_finish_request')) {
+            fastcgi_finish_request();
+        }
+    }
+
+    /**
+     * Sets the response content
+     *
+     * Valid types are strings, numbers, and objects that implement a __toString() method.
+     *
+     * @param mixed $content
+     *
+     * @api
+     */
+    public function setContent($content)
+    {
+        if (null !== $content && !is_string($content) && !is_numeric($content) && !is_callable(array($content, '__toString'))) {
+            throw new \UnexpectedValueException('The Response content must be a string or object implementing __toString(), "'.gettype($content).'" given.');
+        }
+
+        $this->content = (string) $content;
+    }
+
+    /**
+     * Gets the current response content
+     *
+     * @return string Content
+     *
+     * @api
+     */
+    public function getContent()
+    {
+        return $this->content;
+    }
+
+    /**
+     * Sets the HTTP protocol version (1.0 or 1.1).
+     *
+     * @param string $version The HTTP protocol version
+     *
+     * @api
+     */
+    public function setProtocolVersion($version)
+    {
+        $this->version = $version;
+    }
+
+    /**
+     * Gets the HTTP protocol version.
+     *
+     * @return string The HTTP protocol version
+     *
+     * @api
+     */
+    public function getProtocolVersion()
+    {
+        return $this->version;
+    }
+
+    /**
+     * Sets response status code.
+     *
+     * @param integer $code HTTP status code
+     * @param string  $text HTTP status text
+     *
+     * @throws \InvalidArgumentException When the HTTP status code is not valid
+     *
+     * @api
+     */
+    public function setStatusCode($code, $text = null)
+    {
+        $this->statusCode = (int) $code;
+        if ($this->isInvalid()) {
+            throw new \InvalidArgumentException(sprintf('The HTTP status code "%s" is not valid.', $code));
+        }
+
+        $this->statusText = false === $text ? '' : (null === $text ? self::$statusTexts[$this->statusCode] : $text);
+    }
+
+    /**
+     * Retrieves status code for the current web response.
+     *
+     * @return string Status code
+     *
+     * @api
+     */
+    public function getStatusCode()
+    {
+        return $this->statusCode;
+    }
+
+    /**
+     * Sets response charset.
+     *
+     * @param string $charset Character set
+     *
+     * @api
+     */
+    public function setCharset($charset)
+    {
+        $this->charset = $charset;
+    }
+
+    /**
+     * Retrieves the response charset.
+     *
+     * @return string Character set
+     *
+     * @api
+     */
+    public function getCharset()
+    {
+        return $this->charset;
+    }
+
+    /**
+     * Returns true if the response is worth caching under any circumstance.
+     *
+     * Responses marked "private" with an explicit Cache-Control directive are
+     * considered uncacheable.
+     *
+     * Responses with neither a freshness lifetime (Expires, max-age) nor cache
+     * validator (Last-Modified, ETag) are considered uncacheable.
+     *
+     * @return Boolean true if the response is worth caching, false otherwise
+     *
+     * @api
+     */
+    public function isCacheable()
+    {
+        if (!in_array($this->statusCode, array(200, 203, 300, 301, 302, 404, 410))) {
+            return false;
+        }
+
+        if ($this->headers->hasCacheControlDirective('no-store') || $this->headers->getCacheControlDirective('private')) {
+            return false;
+        }
+
+        return $this->isValidateable() || $this->isFresh();
+    }
+
+    /**
+     * Returns true if the response is "fresh".
+     *
+     * Fresh responses may be served from cache without any interaction with the
+     * origin. A response is considered fresh when it includes a Cache-Control/max-age
+     * indicator or Expiration header and the calculated age is less than the freshness lifetime.
+     *
+     * @return Boolean true if the response is fresh, false otherwise
+     *
+     * @api
+     */
+    public function isFresh()
+    {
+        return $this->getTtl() > 0;
+    }
+
+    /**
+     * Returns true if the response includes headers that can be used to validate
+     * the response with the origin server using a conditional GET request.
+     *
+     * @return Boolean true if the response is validateable, false otherwise
+     *
+     * @api
+     */
+    public function isValidateable()
+    {
+        return $this->headers->has('Last-Modified') || $this->headers->has('ETag');
+    }
+
+    /**
+     * Marks the response as "private".
+     *
+     * It makes the response ineligible for serving other clients.
+     *
+     * @api
+     */
+    public function setPrivate()
+    {
+        $this->headers->removeCacheControlDirective('public');
+        $this->headers->addCacheControlDirective('private');
+    }
+
+    /**
+     * Marks the response as "public".
+     *
+     * It makes the response eligible for serving other clients.
+     *
+     * @api
+     */
+    public function setPublic()
+    {
+        $this->headers->addCacheControlDirective('public');
+        $this->headers->removeCacheControlDirective('private');
+    }
+
+    /**
+     * Returns true if the response must be revalidated by caches.
+     *
+     * This method indicates that the response must not be served stale by a
+     * cache in any circumstance without first revalidating with the origin.
+     * When present, the TTL of the response should not be overridden to be
+     * greater than the value provided by the origin.
+     *
+     * @return Boolean true if the response must be revalidated by a cache, false otherwise
+     *
+     * @api
+     */
+    public function mustRevalidate()
+    {
+        return $this->headers->hasCacheControlDirective('must-revalidate') || $this->headers->has('must-proxy-revalidate');
+    }
+
+    /**
+     * Returns the Date header as a DateTime instance.
+     *
+     * @return \DateTime A \DateTime instance
+     *
+     * @throws \RuntimeException when the header is not parseable
+     *
+     * @api
+     */
+    public function getDate()
+    {
+        return $this->headers->getDate('Date');
+    }
+
+    /**
+     * Sets the Date header.
+     *
+     * @param \DateTime $date A \DateTime instance
+     *
+     * @api
+     */
+    public function setDate(\DateTime $date)
+    {
+        $date->setTimezone(new \DateTimeZone('UTC'));
+        $this->headers->set('Date', $date->format('D, d M Y H:i:s').' GMT');
+    }
+
+    /**
+     * Returns the age of the response.
+     *
+     * @return integer The age of the response in seconds
+     */
+    public function getAge()
+    {
+        if ($age = $this->headers->get('Age')) {
+            return $age;
+        }
+
+        return max(time() - $this->getDate()->format('U'), 0);
+    }
+
+    /**
+     * Marks the response stale by setting the Age header to be equal to the maximum age of the response.
+     *
+     * @api
+     */
+    public function expire()
+    {
+        if ($this->isFresh()) {
+            $this->headers->set('Age', $this->getMaxAge());
+        }
+    }
+
+    /**
+     * Returns the value of the Expires header as a DateTime instance.
+     *
+     * @return \DateTime A DateTime instance
+     *
+     * @api
+     */
+    public function getExpires()
+    {
+        return $this->headers->getDate('Expires');
+    }
+
+    /**
+     * Sets the Expires HTTP header with a \DateTime instance.
+     *
+     * If passed a null value, it removes the header.
+     *
+     * @param \DateTime $date A \DateTime instance
+     *
+     * @api
+     */
+    public function setExpires(\DateTime $date = null)
+    {
+        if (null === $date) {
+            $this->headers->remove('Expires');
+        } else {
+            $date = clone $date;
+            $date->setTimezone(new \DateTimeZone('UTC'));
+            $this->headers->set('Expires', $date->format('D, d M Y H:i:s').' GMT');
+        }
+    }
+
+    /**
+     * Sets the number of seconds after the time specified in the response's Date
+     * header when the the response should no longer be considered fresh.
+     *
+     * First, it checks for a s-maxage directive, then a max-age directive, and then it falls
+     * back on an expires header. It returns null when no maximum age can be established.
+     *
+     * @return integer|null Number of seconds
+     *
+     * @api
+     */
+    public function getMaxAge()
+    {
+        if ($age = $this->headers->getCacheControlDirective('s-maxage')) {
+            return $age;
+        }
+
+        if ($age = $this->headers->getCacheControlDirective('max-age')) {
+            return $age;
+        }
+
+        if (null !== $this->getExpires()) {
+            return $this->getExpires()->format('U') - $this->getDate()->format('U');
+        }
+
+        return null;
+    }
+
+    /**
+     * Sets the number of seconds after which the response should no longer be considered fresh.
+     *
+     * This methods sets the Cache-Control max-age directive.
+     *
+     * @param integer $value A number of seconds
+     *
+     * @api
+     */
+    public function setMaxAge($value)
+    {
+        $this->headers->addCacheControlDirective('max-age', $value);
+    }
+
+    /**
+     * Sets the number of seconds after which the response should no longer be considered fresh by shared caches.
+     *
+     * This methods sets the Cache-Control s-maxage directive.
+     *
+     * @param integer $value A number of seconds
+     *
+     * @api
+     */
+    public function setSharedMaxAge($value)
+    {
+        $this->setPublic();
+        $this->headers->addCacheControlDirective('s-maxage', $value);
+    }
+
+    /**
+     * Returns the response's time-to-live in seconds.
+     *
+     * It returns null when no freshness information is present in the response.
+     *
+     * When the responses TTL is <= 0, the response may not be served from cache without first
+     * revalidating with the origin.
+     *
+     * @return integer The TTL in seconds
+     *
+     * @api
+     */
+    public function getTtl()
+    {
+        if ($maxAge = $this->getMaxAge()) {
+            return $maxAge - $this->getAge();
+        }
+
+        return null;
+    }
+
+    /**
+     * Sets the response's time-to-live for shared caches.
+     *
+     * This method adjusts the Cache-Control/s-maxage directive.
+     *
+     * @param integer $seconds The number of seconds
+     *
+     * @api
+     */
+    public function setTtl($seconds)
+    {
+        $this->setSharedMaxAge($this->getAge() + $seconds);
+    }
+
+    /**
+     * Sets the response's time-to-live for private/client caches.
+     *
+     * This method adjusts the Cache-Control/max-age directive.
+     *
+     * @param integer $seconds The number of seconds
+     *
+     * @api
+     */
+    public function setClientTtl($seconds)
+    {
+        $this->setMaxAge($this->getAge() + $seconds);
+    }
+
+    /**
+     * Returns the Last-Modified HTTP header as a DateTime instance.
+     *
+     * @return \DateTime A DateTime instance
+     *
+     * @api
+     */
+    public function getLastModified()
+    {
+        return $this->headers->getDate('Last-Modified');
+    }
+
+    /**
+     * Sets the Last-Modified HTTP header with a \DateTime instance.
+     *
+     * If passed a null value, it removes the header.
+     *
+     * @param \DateTime $date A \DateTime instance
+     *
+     * @api
+     */
+    public function setLastModified(\DateTime $date = null)
+    {
+        if (null === $date) {
+            $this->headers->remove('Last-Modified');
+        } else {
+            $date = clone $date;
+            $date->setTimezone(new \DateTimeZone('UTC'));
+            $this->headers->set('Last-Modified', $date->format('D, d M Y H:i:s').' GMT');
+        }
+    }
+
+    /**
+     * Returns the literal value of ETag HTTP header.
+     *
+     * @return string The ETag HTTP header
+     *
+     * @api
+     */
+    public function getEtag()
+    {
+        return $this->headers->get('ETag');
+    }
+
+    /**
+     * Sets the ETag value.
+     *
+     * @param string  $etag The ETag unique identifier
+     * @param Boolean $weak Whether you want a weak ETag or not
+     *
+     * @api
+     */
+    public function setEtag($etag = null, $weak = false)
+    {
+        if (null === $etag) {
+            $this->headers->remove('Etag');
+        } else {
+            if (0 !== strpos($etag, '"')) {
+                $etag = '"'.$etag.'"';
+            }
+
+            $this->headers->set('ETag', (true === $weak ? 'W/' : '').$etag);
+        }
+    }
+
+    /**
+     * Sets Response cache headers (validation and/or expiration).
+     *
+     * Available options are: etag, last_modified, max_age, s_maxage, private, and public.
+     *
+     * @param array $options An array of cache options
+     *
+     * @api
+     */
+    public function setCache(array $options)
+    {
+        if ($diff = array_diff(array_keys($options), array('etag', 'last_modified', 'max_age', 's_maxage', 'private', 'public'))) {
+            throw new \InvalidArgumentException(sprintf('Response does not support the following options: "%s".', implode('", "', array_keys($diff))));
+        }
+
+        if (isset($options['etag'])) {
+            $this->setEtag($options['etag']);
+        }
+
+        if (isset($options['last_modified'])) {
+            $this->setLastModified($options['last_modified']);
+        }
+
+        if (isset($options['max_age'])) {
+            $this->setMaxAge($options['max_age']);
+        }
+
+        if (isset($options['s_maxage'])) {
+            $this->setSharedMaxAge($options['s_maxage']);
+        }
+
+        if (isset($options['public'])) {
+            if ($options['public']) {
+                $this->setPublic();
+            } else {
+                $this->setPrivate();
+            }
+        }
+
+        if (isset($options['private'])) {
+            if ($options['private']) {
+                $this->setPrivate();
+            } else {
+                $this->setPublic();
+            }
+        }
+    }
+
+    /**
+     * Modifies the response so that it conforms to the rules defined for a 304 status code.
+     *
+     * This sets the status, removes the body, and discards any headers
+     * that MUST NOT be included in 304 responses.
+     *
+     * @see http://tools.ietf.org/html/rfc2616#section-10.3.5
+     *
+     * @api
+     */
+    public function setNotModified()
+    {
+        $this->setStatusCode(304);
+        $this->setContent(null);
+
+        // remove headers that MUST NOT be included with 304 Not Modified responses
+        foreach (array('Allow', 'Content-Encoding', 'Content-Language', 'Content-Length', 'Content-MD5', 'Content-Type', 'Last-Modified') as $header) {
+            $this->headers->remove($header);
+        }
+    }
+
+    /**
+     * Returns true if the response includes a Vary header.
+     *
+     * @return true if the response includes a Vary header, false otherwise
+     *
+     * @api
+     */
+    public function hasVary()
+    {
+        return (Boolean) $this->headers->get('Vary');
+    }
+
+    /**
+     * Returns an array of header names given in the Vary header.
+     *
+     * @return array An array of Vary names
+     *
+     * @api
+     */
+    public function getVary()
+    {
+        if (!$vary = $this->headers->get('Vary')) {
+            return array();
+        }
+
+        return is_array($vary) ? $vary : preg_split('/[\s,]+/', $vary);
+    }
+
+    /**
+     * Sets the Vary header.
+     *
+     * @param string|array $headers
+     * @param Boolean      $replace Whether to replace the actual value of not (true by default)
+     *
+     * @api
+     */
+    public function setVary($headers, $replace = true)
+    {
+        $this->headers->set('Vary', $headers, $replace);
+    }
+
+    /**
+     * Determines if the Response validators (ETag, Last-Modified) matches
+     * a conditional value specified in the Request.
+     *
+     * If the Response is not modified, it sets the status code to 304 and
+     * remove the actual content by calling the setNotModified() method.
+     *
+     * @param Request $request A Request instance
+     *
+     * @return Boolean true if the Response validators matches the Request, false otherwise
+     *
+     * @api
+     */
+    public function isNotModified(Request $request)
+    {
+        $lastModified = $request->headers->get('If-Modified-Since');
+        $notModified = false;
+        if ($etags = $request->getEtags()) {
+            $notModified = (in_array($this->getEtag(), $etags) || in_array('*', $etags)) && (!$lastModified || $this->headers->get('Last-Modified') == $lastModified);
+        } elseif ($lastModified) {
+            $notModified = $lastModified == $this->headers->get('Last-Modified');
+        }
+
+        if ($notModified) {
+            $this->setNotModified();
+        }
+
+        return $notModified;
+    }
+
+    // http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
+    /**
+     * @api
+     */
+    public function isInvalid()
+    {
+        return $this->statusCode < 100 || $this->statusCode >= 600;
+    }
+
+    /**
+     * @api
+     */
+    public function isInformational()
+    {
+        return $this->statusCode >= 100 && $this->statusCode < 200;
+    }
+
+    /**
+     * @api
+     */
+    public function isSuccessful()
+    {
+        return $this->statusCode >= 200 && $this->statusCode < 300;
+    }
+
+    /**
+     * @api
+     */
+    public function isRedirection()
+    {
+        return $this->statusCode >= 300 && $this->statusCode < 400;
+    }
+
+    /**
+     * @api
+     */
+    public function isClientError()
+    {
+        return $this->statusCode >= 400 && $this->statusCode < 500;
+    }
+
+    /**
+     * @api
+     */
+    public function isServerError()
+    {
+        return $this->statusCode >= 500 && $this->statusCode < 600;
+    }
+
+    /**
+     * @api
+     */
+    public function isOk()
+    {
+        return 200 === $this->statusCode;
+    }
+
+    /**
+     * @api
+     */
+    public function isForbidden()
+    {
+        return 403 === $this->statusCode;
+    }
+
+    /**
+     * @api
+     */
+    public function isNotFound()
+    {
+        return 404 === $this->statusCode;
+    }
+
+    /**
+     * @api
+     */
+    public function isRedirect($location = null)
+    {
+        return in_array($this->statusCode, array(201, 301, 302, 303, 307)) && (null === $location ?: $location == $this->headers->get('Location'));
+    }
+
+    /**
+     * @api
+     */
+    public function isEmpty()
+    {
+        return in_array($this->statusCode, array(201, 204, 304));
+    }
+}