--- /dev/null
+<?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;
+
+/**
+ * ResponseHeaderBag is a container for Response HTTP headers.
+ *
+ * @author Fabien Potencier <fabien@symfony.com>
+ */
+class ResponseHeaderBag extends HeaderBag
+{
+ const COOKIES_FLAT = 'flat';
+ const COOKIES_ARRAY = 'array';
+
+ const DISPOSITION_ATTACHMENT = 'attachment';
+ const DISPOSITION_INLINE = 'inline';
+
+ /**
+ * @var array
+ */
+ protected $computedCacheControl = array();
+
+ /**
+ * @var array
+ */
+ protected $cookies = array();
+
+ /**
+ * @var array
+ */
+ protected $headerNames = array();
+
+ /**
+ * Constructor.
+ *
+ * @param array $headers An array of HTTP headers
+ */
+ public function __construct(array $headers = array())
+ {
+ parent::__construct($headers);
+
+ if (!isset($this->headers['cache-control'])) {
+ $this->set('Cache-Control', '');
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function __toString()
+ {
+ $cookies = '';
+ foreach ($this->getCookies() as $cookie) {
+ $cookies .= 'Set-Cookie: '.$cookie."\r\n";
+ }
+
+ ksort($this->headerNames);
+
+ return parent::__toString().$cookies;
+ }
+
+ /**
+ * Returns the headers, with original capitalizations.
+ *
+ * @return array An array of headers
+ */
+ public function allPreserveCase()
+ {
+ return array_combine($this->headerNames, $this->headers);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function replace(array $headers = array())
+ {
+ $this->headerNames = array();
+
+ parent::replace($headers);
+
+ if (!isset($this->headers['cache-control'])) {
+ $this->set('Cache-Control', '');
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function set($key, $values, $replace = true)
+ {
+ parent::set($key, $values, $replace);
+
+ $uniqueKey = str_replace('_', '-', strtolower($key));
+ $this->headerNames[$uniqueKey] = $key;
+
+ // ensure the cache-control header has sensible defaults
+ if (in_array($uniqueKey, array('cache-control', 'etag', 'last-modified', 'expires'))) {
+ $computed = $this->computeCacheControlValue();
+ $this->headers['cache-control'] = array($computed);
+ $this->headerNames['cache-control'] = 'Cache-Control';
+ $this->computedCacheControl = $this->parseCacheControl($computed);
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function remove($key)
+ {
+ parent::remove($key);
+
+ $uniqueKey = str_replace('_', '-', strtolower($key));
+ unset($this->headerNames[$uniqueKey]);
+
+ if ('cache-control' === $uniqueKey) {
+ $this->computedCacheControl = array();
+ }
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function hasCacheControlDirective($key)
+ {
+ return array_key_exists($key, $this->computedCacheControl);
+ }
+
+ /**
+ * {@inheritdoc}
+ */
+ public function getCacheControlDirective($key)
+ {
+ return array_key_exists($key, $this->computedCacheControl) ? $this->computedCacheControl[$key] : null;
+ }
+
+ /**
+ * Sets a cookie.
+ *
+ * @param Cookie $cookie
+ */
+ public function setCookie(Cookie $cookie)
+ {
+ $this->cookies[$cookie->getDomain()][$cookie->getPath()][$cookie->getName()] = $cookie;
+ }
+
+ /**
+ * Removes a cookie from the array, but does not unset it in the browser.
+ *
+ * @param string $name
+ * @param string $path
+ * @param string $domain
+ */
+ public function removeCookie($name, $path = '/', $domain = null)
+ {
+ if (null === $path) {
+ $path = '/';
+ }
+
+ unset($this->cookies[$domain][$path][$name]);
+
+ if (empty($this->cookies[$domain][$path])) {
+ unset($this->cookies[$domain][$path]);
+
+ if (empty($this->cookies[$domain])) {
+ unset($this->cookies[$domain]);
+ }
+ }
+ }
+
+ /**
+ * Returns an array with all cookies.
+ *
+ * @param string $format
+ *
+ * @return array
+ *
+ * @throws \InvalidArgumentException When the $format is invalid
+ */
+ public function getCookies($format = self::COOKIES_FLAT)
+ {
+ if (!in_array($format, array(self::COOKIES_FLAT, self::COOKIES_ARRAY))) {
+ throw new \InvalidArgumentException(sprintf('Format "%s" invalid (%s).', $format, implode(', ', array(self::COOKIES_FLAT, self::COOKIES_ARRAY))));
+ }
+
+ if (self::COOKIES_ARRAY === $format) {
+ return $this->cookies;
+ }
+
+ $flattenedCookies = array();
+ foreach ($this->cookies as $path) {
+ foreach ($path as $cookies) {
+ foreach ($cookies as $cookie) {
+ $flattenedCookies[] = $cookie;
+ }
+ }
+ }
+
+ return $flattenedCookies;
+ }
+
+ /**
+ * Clears a cookie in the browser.
+ *
+ * @param string $name
+ * @param string $path
+ * @param string $domain
+ * @param bool $secure
+ * @param bool $httpOnly
+ */
+ public function clearCookie($name, $path = '/', $domain = null, $secure = false, $httpOnly = true)
+ {
+ $this->setCookie(new Cookie($name, null, 1, $path, $domain, $secure, $httpOnly));
+ }
+
+ /**
+ * Generates a HTTP Content-Disposition field-value.
+ *
+ * @param string $disposition One of "inline" or "attachment"
+ * @param string $filename A unicode string
+ * @param string $filenameFallback A string containing only ASCII characters that
+ * is semantically equivalent to $filename. If the filename is already ASCII,
+ * it can be omitted, or just copied from $filename
+ *
+ * @return string A string suitable for use as a Content-Disposition field-value
+ *
+ * @throws \InvalidArgumentException
+ *
+ * @see RFC 6266
+ */
+ public function makeDisposition($disposition, $filename, $filenameFallback = '')
+ {
+ if (!in_array($disposition, array(self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE))) {
+ throw new \InvalidArgumentException(sprintf('The disposition must be either "%s" or "%s".', self::DISPOSITION_ATTACHMENT, self::DISPOSITION_INLINE));
+ }
+
+ if ('' == $filenameFallback) {
+ $filenameFallback = $filename;
+ }
+
+ // filenameFallback is not ASCII.
+ if (!preg_match('/^[\x20-\x7e]*$/', $filenameFallback)) {
+ throw new \InvalidArgumentException('The filename fallback must only contain ASCII characters.');
+ }
+
+ // percent characters aren't safe in fallback.
+ if (false !== strpos($filenameFallback, '%')) {
+ throw new \InvalidArgumentException('The filename fallback cannot contain the "%" character.');
+ }
+
+ // path separators aren't allowed in either.
+ if (false !== strpos($filename, '/') || false !== strpos($filename, '\\') || false !== strpos($filenameFallback, '/') || false !== strpos($filenameFallback, '\\')) {
+ throw new \InvalidArgumentException('The filename and the fallback cannot contain the "/" and "\\" characters.');
+ }
+
+ $output = sprintf('%s; filename="%s"', $disposition, str_replace('"', '\\"', $filenameFallback));
+
+ if ($filename !== $filenameFallback) {
+ $output .= sprintf("; filename*=utf-8''%s", rawurlencode($filename));
+ }
+
+ return $output;
+ }
+
+ /**
+ * Returns the calculated value of the cache-control header.
+ *
+ * This considers several other headers and calculates or modifies the
+ * cache-control header to a sensible, conservative value.
+ *
+ * @return string
+ */
+ protected function computeCacheControlValue()
+ {
+ if (!$this->cacheControl && !$this->has('ETag') && !$this->has('Last-Modified') && !$this->has('Expires')) {
+ return 'no-cache';
+ }
+
+ if (!$this->cacheControl) {
+ // conservative by default
+ return 'private, must-revalidate';
+ }
+
+ $header = $this->getCacheControlHeader();
+ if (isset($this->cacheControl['public']) || isset($this->cacheControl['private'])) {
+ return $header;
+ }
+
+ // public if s-maxage is defined, private otherwise
+ if (!isset($this->cacheControl['s-maxage'])) {
+ return $header.', private';
+ }
+
+ return $header;
+ }
+}
projects / yaffs-website / blobdiff