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Experimental JS and CSS caching for improved performance. Currently disabled by default.

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Cameron
2015-06-03 15:44:07 -07:00
parent f938cc320f
commit 7cfcd1fd23
3 changed files with 154 additions and 5 deletions
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136
e107_handlers/js_manager.php
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@@ -55,7 +55,15 @@ class e_jsmanager
)
);
/**
* Dynamic List of files to be cached.
* @var array
*/
protected $_cache_list = array();
protected $_core_prefs = array();
/**
@@ -1125,6 +1133,8 @@ class e_jsmanager
{
return '';
}
$tp = e107::getParser();
echo "\n";
if($label && E107_DEBUG_LEVEL > 0)
@@ -1145,10 +1155,14 @@ class e_jsmanager
$pre = varset($path[2]) ? $path[2]."\n" : '';
$post = varset($path[3]) ? "\n".$path[3] : '';
$path = $path[1];
if(strpos($path, 'http') !== 0) $path = $tp->replaceConstants($path, 'abs').'?external=1&'.$this->getCacheId();
if(strpos($path, 'http') !== 0)
{
$path = $tp->replaceConstants($path, 'abs').'?external=1&'.$this->getCacheId();
}
echo $pre.'<link rel="stylesheet" media="'.$media.'" type="text/css" href="'.$path.'" />'.$post;
echo "\n";
// $this->cacheList['css'][] = $path;
continue;
}
elseif($external) //true or 'js'
@@ -1191,10 +1205,18 @@ class e_jsmanager
$pre = varset($path[2]) ? $path[2]."\n" : '';
$post = varset($path[3]) ? "\n".$path[3] : '';
$path = $path[1];
if(strpos($path, 'http') !== 0) $path = $tp->replaceConstants($path, 'abs').'?'.$this->getCacheId();
if(strpos($path, 'http') !== 0) // local file.
{
if($this->addCache($external,$path) === true) // if cache enabled, then skip and continue.
{
continue;
}
$path = $tp->replaceConstants($path, 'abs').'?'.$this->getCacheId();
}
echo $pre.'<link rel="stylesheet" media="'.$media.'" property="stylesheet" type="text/css" href="'.$path.'" />'.$post;
echo "\n";
continue;
}
@@ -1207,6 +1229,12 @@ class e_jsmanager
if($inline) $inline = " ".$inline;
$path = $path[0];
if(!$isExternal && $this->addCache('js',$path)===true)
{
continue;
}
if($external)
{
// Never use CacheID on a CDN script, always render if it's CDN
@@ -1215,15 +1243,24 @@ class e_jsmanager
// don't render non CDN libs as external script calls when script consolidation is enabled
if($mod === 'core' || $mod === 'plugin' || $mod === 'theme')
{
if(!e107::getPref('e_jslib_nocombine')) continue;
}
$path = $tp->replaceConstants($path, 'abs').'?'.$this->getCacheId();
}
echo $pre.'<script type="text/javascript" src="'.$path.'"'.$inline.'></script>'.$post;
echo "\n";
continue;
}
// never try to consolidate external scripts
if($isExternal) continue;
$path = $tp->replaceConstants($path, '');
@@ -1233,9 +1270,100 @@ class e_jsmanager
}
}
return $lmodified;
}
/**
* @param $type string css|js
* @param $path
* @return bool
*/
private function addCache($type,$path)
{
return false; //return false if cache is disabled - CURRENTLY DISABLED - TODO Add Pref etc.
$localPath = e107::getParser()->replaceConstants($path);
$this->_cache_list[$type][] = $localPath;
return true;
}
/**
* Render Cached JS or CSS file.
* @param $type
*/
public function renderCached($type)
{
if(!empty($this->_cache_list[$type]))
{
$content = '';
$cacheId = $this->getCacheFileId($this->_cache_list[$type]);
$fileName = $cacheId.".".$type;
$saveFilePath = e_WEB.'cache/'.$fileName;
if(!is_readable($saveFilePath))
{
foreach($this->_cache_list[$type] as $k=>$path)
{
$content .= "\n\n/* ".str_replace("../",'',$path)." */ \n\n";
$content .= file_get_contents($path);
}
if(!@file_put_contents($saveFilePath, $content))
{
e107::getMessage()->addDebug("Couldn't save js/css cache file: ".$saveFilePath);
}
}
echo "\n\n<!-- Cached ".$type." -->\n";
if($type == 'js')
{
echo "<script type='text/javascript' src='".e_WEB_ABS."cache/".$fileName."'></script>\n\n";
}
else
{
echo "<link type='text/css' href='".e_WEB_ABS."cache/".$fileName."' rel='stylesheet' property='stylesheet' />\n\n";
}
// Remove from list, anything we have added.
foreach($this->_cache_list[$type] as $k=>$path)
{
unset($this->_cache_list[$type][$k]);
}
}
}
function getCacheFileId($paths)
{
$id = '';
foreach($paths as $p)
{
$id .= str_replace("../","",$p);
}
return hash('crc32', $id) ;
}
/**
* Render JS/CSS source array
*