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<?php
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 2008, 2009, StatusNet, Inc.
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
if (!defined('STATUSNET') && !defined('LACONICA')) { exit(1); }
// We bundle the minify library...
set_include_path(get_include_path() . PATH_SEPARATOR . dirname(__FILE__) . '/extlib/minify/min/lib');
class MinifyAction extends Action
{
const TYPE_CSS = 'text/css';
const TYPE_HTML = 'text/html';
// there is some debate over the ideal JS Content-Type, but this is the
// Apache default and what Yahoo! uses..
const TYPE_JS = 'application/x-javascript';
const cacheKey = 'minify';
var $file;
function isReadOnly($args)
{
return true;
}
function prepare($args)
{
parent::prepare($args);
$this->v = $args['v'];
$f = $this->arg('f');
if(isset($f)) {
$this->file = INSTALLDIR.'/'.$f;
if(file_exists($this->file)) {
return true;
} else {
$this->clientError(_('f parameter is not a valid path'),404);
return false;
}
}else{
$this->clientError(_('f parameter is required'),500);
return false;
}
}
function etag()
{
if(isset($this->v)) {
return "\"" . crc32($this->file . $this->v) . "\"";
}else{
$stat = stat($this->file);
return '"' . $stat['ino'] . '-' . $stat['size'] . '-' . $stat['mtime'] . '"';
}
}
function lastModified()
{
return filemtime($this->file);
}
function handle($args)
{
parent::handle($args);
$c = common_memcache();
if (!empty($c)) {
$out = $c->get(common_cache_key(self::cacheKey . ':' . $this->file));
}
if(empty($out)) {
$out = $this->minify($this->file);
}
if (!empty($c)) {
$c->set(common_cache_key(self::cacheKey . ':' . $this->file), $out);
}
$sec = session_cache_expire() * 60;
header('Cache-Control: public, max-age=' . $sec);
header('Pragma: public');
$this->raw($out);
}
function minify($file)
{
$info = pathinfo($file);
switch(strtolower($info['extension'])){
case 'js':
require_once('JSMin.php');
$out = JSMin::minify(file_get_contents($file));
header('Content-Type: ' . self::TYPE_JS);
break;
case 'css':
require_once('Minify/CSS.php');
$options = array();
$options['currentDir'] = dirname($file);
$options['docRoot'] = INSTALLDIR;
$out = Minify_CSS::minify(file_get_contents($file),$options);
header('Content-Type: ' . self::TYPE_CSS);
break;
default:
$this->clientError(_('File type not supported'),500);
return false;
}
return $out;
}
}
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