/**
* Set X-Accel-Expires header for web server-side caching
* @param bool|int $ttl
*/
public function putExpires($ttl = null)
{
if (Debugger::isEnabled()) {
return;
}
if (is_null($ttl)) {
$ttl = $this->cache;
}
if ($ttl === true) {
$ttl = self::DEFAULT_CACHE;
}
if (!$ttl or !is_numeric($ttl) or $ttl < 0) {
return;
}
View::addExpires($ttl);
}
/**
* Output resource
* @param $instance
* @return bool
* @throws Exception
*/
public function view($instance)
{
if (!$this->isPrintable()) {
throw new Exception("Resource of type '{$this->type}' is not printable");
}
// Cut extension
$parts = explode('.', $instance);
if (sizeof($parts) == 2) {
if ($parts[1] == $this->type) {
$instance = $parts[0];
}
}
if (!$instance or !$this->checkInstance($instance)) {
return false;
}
/*
* Disabled due to nginx doesn't support Vary in fastcgi_cache implementation at the moment
*
// Detect if browser supports gzip compression
$enc = false;
if( !empty( $_SERVER['HTTP_ACCEPT_ENCODING'] ) ) {
$encTypes = $_SERVER['HTTP_ACCEPT_ENCODING'];
if( strpos( $encTypes, ',' ) ) {
$encTypes = explode( ',', $encTypes );
} else {
$encTypes = array( $encTypes );
}
foreach( $encTypes as $type ) {
$type = trim( $type );
switch( $type ) {
case 'gzip':
$enc = 'gzip';
break 2;
}
}
}
*/
$enc = 'gzip';
if ($enc == 'gzip' and $data = $this->compileGZ($instance)) {
// header( 'Vary: Accept-Encoding' );
header('Content-Encoding: gzip');
} else {
$data = $this->compile($instance);
}
if (!$data) {
return false;
}
header('Content-Type: ' . $this->contentType);
if (!($modified = Cache::getInstance()->get("{$instance}_{$this->type}_modified"))) {
$modified = gmdate('D, d M Y H:i:s') . ' GMT';
}
View::addExpires(Controller::DEFAULT_CACHE);
header('Last-Modified: ' . $modified);
header('Expires: ' . gmdate('D, d M Y H:i:s', time() + self::CACHE_TTL) . ' GMT');
echo $data;
return true;
}
