/**
* Injects the web debug toolbar into a given HTML string.
*
* @param string $content The HTML content
*
* @return Response A Response instance
*/
protected function injectToolbar(Request $request, Response $response)
{
$data = '';
foreach ($this->profiler->getCollectors() as $name => $collector) {
$data .= $collector->getSummary();
}
$position = false === strpos($request->headers->get('user-agent'), 'Mobile') ? 'fixed' : 'absolute';
$toolbar = <<<EOF
<!-- START of Symfony 2 Web Debug Toolbar -->
<div style="clear: both; height: 40px;"></div>
<div style="position: {$position}; bottom: 0px; left:0; z-index: 6000000; width: 100%; background: #dde4eb; border-top: 1px solid #bbb; padding: 5px; margin: 0; font: 11px Verdana, Arial, sans-serif; color: #222;">
{$data}
</div>
<!-- END of Symfony 2 Web Debug Toolbar -->
EOF;
$toolbar = "\n" . str_replace("\n", '', $toolbar) . "\n";
$count = 0;
$content = str_ireplace('</body>', $toolbar . '</body>', $response->getContent(), $count);
if (!$count) {
$content .= $toolbar;
}
return $content;
}
/**
* Replaces a Response ESI tags with the included resource content.
*
* @param Symfony\Components\HttpFoundation\Request $request A Request instance
* @param Symfony\Components\HttpFoundation\Response $response A Response instance
*/
public function process(Request $request, Response $response)
{
$this->request = $request;
$type = $response->headers->get('Content-Type');
if (empty($type)) {
$type = 'text/html';
}
if (!in_array($type, $this->contentTypes)) {
return $response;
}
// we don't use a proper XML parser here as we can have ESI tags in a plain text response
$content = $response->getContent();
$content = preg_replace_callback('#<esi\\:include\\s+(.+?)\\s*/>#', array($this, 'handleEsiIncludeTag'), $content);
$content = preg_replace('#<esi\\:comment[^>]*/>#', '', $content);
$content = preg_replace('#<esi\\:remove>.*?</esi\\:remove>#', '', $content);
$response->setContent($content);
$response->headers->set('X-Body-Eval', 'ESI');
// remove ESI/1.0 from the Surrogate-Control header
$value = $response->headers->get('Surrogate-Control');
if (preg_match('#^content="ESI/1.0"$#', $value)) {
$response->headers->delete('Surrogate-Control');
} else {
$response->headers->set('Surrogate-Control', preg_replace('#ESI/1.0#', '', $value));
}
}
/**
* Writes a cache entry to the store for the given Request and Response.
*
* Existing entries are read and any that match the response are removed. This
* method calls write with the new list of cache entries.
*
* @param Symfony\Components\HttpFoundation\Request $request A Request instance
* @param Symfony\Components\HttpFoundation\Response $response A Response instance
*
* @return string The key under which the response is stored
*/
public function write(Request $request, Response $response)
{
$key = $this->getCacheKey($request);
$storedEnv = $this->persistRequest($request);
// write the response body to the entity store if this is the original response
if (!$response->headers->has('X-Content-Digest')) {
$digest = 'en' . sha1($response->getContent());
if (false === $this->save($digest, $response->getContent())) {
throw new \RuntimeException(sprintf('Unable to store the entity (%s).', $e->getMessage()));
}
$response->headers->set('X-Content-Digest', $digest);
if (!$response->headers->has('Transfer-Encoding')) {
$response->headers->set('Content-Length', strlen($response->getContent()));
}
}
// read existing cache entries, remove non-varying, and add this one to the list
$entries = array();
$vary = $response->headers->get('vary');
foreach ($this->getMetadata($key) as $entry) {
if (!isset($entry[1]['vary'])) {
$entry[1]['vary'] = array('');
}
if ($vary != $entry[1]['vary'][0] || !$this->requestsMatch($vary, $entry[0], $storedEnv)) {
$entries[] = $entry;
}
}
$headers = $this->persistResponse($response);
unset($headers['age']);
array_unshift($entries, array($storedEnv, $headers));
if (false === $this->save($key, serialize($entries))) {
throw new \RuntimeException(sprintf('Unable to store the metadata (%s).', $e->getMessage()));
}
return $key;
}
/**
* Restores the Response body.
*
* @param Symfony\Components\HttpFoundation\Response $response A Response instance
*
* @return Symfony\Components\HttpFoundation\Response A Response instance
*/
protected function restoreResponseBody(Response $response)
{
if ($response->headers->has('X-Body-Eval')) {
ob_start();
if ($response->headers->has('X-Body-File')) {
include $response->headers->get('X-Body-File');
} else {
eval('; ?>' . $response->getContent() . '<?php ;');
}
$response->setContent(ob_get_clean());
$response->headers->delete('X-Body-Eval');
} elseif ($response->headers->has('X-Body-File')) {
$response->setContent(file_get_contents($response->headers->get('X-Body-File')));
} else {
return;
}
$response->headers->delete('X-Body-File');
if (!$response->headers->has('Transfer-Encoding')) {
$response->headers->set('Content-Length', strlen($response->getContent()));
}
}