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Sequenzia/Rails/Assets/Server.php
2013-10-02 01:12:58 -05:00

153 lines
4.4 KiB
PHP
Executable File

<?php
namespace Rails\Assets;
use Rails;
class Server
{
public function dispatch_request()
{
$path = $this->request()->path();
if ($base_path = $this->base_path())
$path = str_replace($base_path, '', $path);
$request = str_replace(Rails::assets()->prefix() . '/', '', $path);
$this->serve_file($request);
}
public function serve_file($file_path)
{
$file = Rails::assets()->findFile($file_path);
if (!$file) {
$this->set_404_headers();
return;
}
$ext = $file->type();
$parser = null;
switch ($ext) {
case 'js':
$parser = new Parser\Base($file);
$this->set_javascript_headers();
break;
case 'css':
$parser = new Parser\Base($file);
$this->set_stylesheet_headers();
break;
case 'jpeg':
$this->headers()->contentType('image/jpeg');
break;
case 'jpg':
$this->headers()->contentType('image/jpeg');
break;
case 'png':
$this->headers()->contentType('image/png');
break;
case 'gif':
$this->headers()->contentType('image/gif');
break;
case 'svg':
$this->headers()->contentType('image/svg+xml');
break;
case 'ttf':
$this->headers()->contentType('application/x-font-ttf');
break;
case 'woff':
$this->headers()->contentType('application/font-woff');
break;
default:
$this->headers()->contentType('application/octet-stream');
return;
}
if ($parser) {
if ($this->params()->body) {
$parseType = Parser\Base::PARSE_TYPE_NONE;
} else {
$parseType = Parser\Base::PARSE_TYPE_FULL;
}
$parser->parse($parseType);
$file_contents = $parser->parsed_file();
} else {
$file_contents = file_get_contents($file->full_path());
}
$etag = md5($file_contents);
$date = date('D, d M Y H:i:s e');
$last_modified = Rails::cache()->fetch('assets.last_mod.' . $file->full_path(), function() use ($date){
return $date;
});
if ($this->file_modified($etag, $last_modified)) {
$this->headers()->add("Last-Modified", $last_modified);
$this->headers()->add("Cache-Control", 'public, max-age=31536000');
$this->headers()->add("ETag", $etag);
Rails::application()->dispatcher()->response()->body($file_contents);
} else {
$this->headers()->status('HTTP/1.1 304 Not Modified');
Rails::application()->dispatcher()->response()->body('');
}
}
public function base_path()
{
return Rails::application()->router()->basePath();
}
public function request()
{
return Rails::application()->dispatcher()->request();
}
public function params()
{
return Rails::application()->dispatcher()->parameters();
}
public function headers()
{
return Rails::application()->dispatcher()->headers();
}
private function file_modified($etag, $last_modified)
{
$if_modified_since = isset($_SERVER['HTTP_IF_MODIFIED_SINCE']) ? $_SERVER['HTTP_IF_MODIFIED_SINCE'] : false;
$if_none_match = isset($_SERVER['HTTP_IF_NONE_MATCH']) ? $_SERVER['HTTP_IF_NONE_MATCH'] : false;
if ((($if_none_match && $if_none_match == $etag) || !$if_none_match) &&
($if_modified_since && $if_modified_since == $last_modified))
{
return false;
} else {
return true;
}
}
private function set_404_headers()
{
$this->headers()->status(404);
}
private function set_javascript_headers()
{
$this->headers()->contentType('application/javascript');
}
private function set_stylesheet_headers()
{
$this->headers()->contentType('text/css');
}
}