/**
* 处理压缩资源内容。调用父类APF_Resource_ResourcesController的handle_request方法，
* 获取资源内容，在调用压缩服务实现压缩，最终给浏览器返回压缩后的资源内容。
* @see APF_Resource_ResourcesController::handle_request()
*/
public function handle_request()
{
// 开启缓冲区
ob_start();
parent::handle_request();
$uri = $_SERVER['REQUEST_URI'];
// 获取资源内容
$content = ob_get_contents();
ob_end_clean();
// 读取压缩服务配置
$mpf = MPF::get_instance();
$host = @$mpf->get_config(self::CONFIG_N_YUICOMPRESSOR_HOST, parent::CONFIG_F_RESOURCE);
$port = @$mpf->get_config(self::CONFIG_N_YUICOMPRESSOR_PORT, parent::CONFIG_F_RESOURCE);
if (!$host || !$port) {
// 为配置压缩服务则直接输出原始内容
echo $content;
return;
}
// 调用压缩服务，输出压缩结果
$fp = @fsockopen($host, $port);
if (!$fp) {
// 连接失败则直接输出内容
echo $content;
return;
}
// 发送要压缩的内容
fwrite($fp, "{$uri}\n");
fwrite($fp, $content);
fwrite($fp, "\n\n");
// 读取并显示压缩后的内容
while (!feof($fp)) {
echo fread($fp, 8192);
}
fclose($fp);
}
public function handle_request()
{
// TODO: to handling 304 header by an interceptor?
$mpf = MPF::get_instance();
$response = $mpf->get_response();
$cache_control = $this->get_cache_control();
if ($cache_control) {
$response->set_header("Cache-Control", $cache_control);
}
$expires = @$mpf->get_config(self::CONFIG_N_EXPIRES, self::CONFIG_F_RESOURCE);
$last_modified = @$mpf->get_config(self::CONFIG_N_LAST_MODIFIED, self::CONFIG_F_RESOURCE);
if (isset($last_modified)) {
$etag = '"' . dechex($last_modified) . '"';
}
if (isset($etag)) {
$none_match = @$_SERVER['HTTP_IF_NONE_MATCH'];
if ($none_match && $none_match == $etag) {
$response->set_header("HTTP/1.1", "304 ETag Matched", "304");
exit;
}
}
if (isset($last_modified) && isset($_SERVER['HTTP_IF_MODIFIED_SINCE'])) {
$tmp = explode(";", $_SERVER['HTTP_IF_MODIFIED_SINCE']);
$modified_since = @strtotime($tmp[0]);
if ($modified_since && $modified_since >= $last_modified) {
$response->set_header("HTTP/1.1", "304 Not Modified", "304");
exit;
}
}
if (isset($expires)) {
$response->set_header("Expires", gmdate("D, d M Y H:i:s", $expires) . " GMT");
}
if (isset($last_modified)) {
$response->set_header("ETag", $etag);
$response->set_header("Last-Modified", gmdate("D, d M Y H:i:s", $last_modified) . " GMT");
}
return parent::handle_request();
}