gnu-social/plugins/Minify/MinifyPlugin.php

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<?php
/*
StatusNet Plugin: 0.9
Plugin Name: Minify
Description: Minifies resources (Javascript and CSS)
Version: 0.1
Author: Craig Andrews <candrews@integralblue.com>
Author URI: http://candrews.integralblue.com/
*/
/*
* StatusNet - the distributed open-source microblogging tool
* Copyright (C) 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/>.
*/
/**
* @package MinifyPlugin
* @maintainer Craig Andrews <candrews@integralblue.com>
* @copyright 2009 Free Software Foundation, Inc http://www.fsf.org
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*/
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');
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class MinifyPlugin extends Plugin
{
private $minifyInlineJs = true;
private $minifyInlineCss = true;
const cacheKey = 'minify';
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/**
* Add Minification related paths to the router table
*
* Hook for RouterInitialized event.
*
* @return boolean hook return
*/
function onStartInitializeRouter($m)
{
$m->connect('main/min',
array('action' => 'minify'));
return true;
}
function onLoginAction($action, &$login)
{
switch ($action)
{
case 'minify':
$login = true;
return false;
default:
return true;
}
}
function onStartScriptElement($action,&$src,&$type) {
$url = parse_url($src);
if( empty($url['scheme']) && empty($url['host']) && empty($url['query']) && empty($url['fragment']))
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{
if (strpos($src, 'plugins/') === 0 || strpos($src, 'local/') === 0) {
$src = $this->minifyUrl($src);
} else {
$src = $this->minifyUrl('js/'.$src);
}
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}
}
function onStartCssLinkElement($action,&$src,&$theme,&$media) {
$allowThemeMinification =
is_null(common_config('theme', 'dir'))
&& is_null(common_config('theme', 'path'))
&& is_null(common_config('theme', 'server'));
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$url = parse_url($src);
if( empty($url['scheme']) && empty($url['host']) && empty($url['query']) && empty($url['fragment']))
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{
if(!isset($theme)) {
$theme = common_config('site', 'theme');
}
if($allowThemeMinification && file_exists(INSTALLDIR.'/local/theme/'.$theme.'/'.$src)) {
$src = $this->minifyUrl('local/theme/'.$theme.'/'.$src);
} else if($allowThemeMinification && file_exists(INSTALLDIR.'/theme/'.$theme.'/'.$src)) {
$src = $this->minifyUrl('theme/'.$theme.'/'.$src);
}else if(file_exists(INSTALLDIR.'/'.$src)){
$src = $this->minifyUrl($src);
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}
}
}
function onStartInlineScriptElement($action,&$code,&$type)
{
if($this->minifyInlineJs && $type=='text/javascript'){
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$c = Cache::instance();
if (!empty($c)) {
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$cacheKey = Cache::key(self::cacheKey . ':' . crc32($code));
$out = $c->get($cacheKey);
}
if(empty($out)) {
$out = $this->minifyJs($code);
}
if (!empty($c)) {
$c->set($cacheKey, $out);
}
if(!empty($out)) {
$code = $out;
}
}
}
function onStartStyleElement($action,&$code,&$type,&$media)
{
if($this->minifyInlineCss && $type=='text/css'){
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$c = Cache::instance();
if (!empty($c)) {
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$cacheKey = Cache::key(self::cacheKey . ':' . crc32($code));
$out = $c->get($cacheKey);
}
if(empty($out)) {
$out = $this->minifyCss($code);
}
if (!empty($c)) {
$c->set($cacheKey, $out);
}
if(!empty($out)) {
$code = $out;
}
}
}
function minifyUrl($src) {
return common_local_url('minify',null,array('f' => $src ,v => STATUSNET_VERSION));
}
static function minifyJs($code) {
require_once('JSMin.php');
return JSMin::minify($code);
}
static function minifyCss($code, $options = array()) {
require_once('Minify/CSS.php');
return Minify_CSS::minify($code,$options);
}
function onPluginVersion(&$versions)
{
$versions[] = array('name' => 'Minify',
'version' => STATUSNET_VERSION,
'author' => 'Craig Andrews',
'homepage' => 'http://status.net/wiki/Plugin:Minify',
'rawdescription' =>
// TRANS: Plugin description.
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_m('The Minify plugin minifies StatusNet\'s CSS and JavaScript, removing whitespace and comments.'));
return true;
}
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}