mKey = $title->getPrefixedDBkey();
$cache->mType = (string)$action;
$cache->mExt = 'html';
return $cache;
}
/**
* Cacheable actions
* @return array
*/
protected static function cacheablePageActions() {
return array( 'view', 'history' );
}
/**
* Get the base file cache directory
* @return string
*/
protected function cacheDirectory() {
global $wgCacheDirectory, $wgFileCacheDirectory, $wgFileCacheDepth;
if ( $wgFileCacheDirectory ) {
$dir = $wgFileCacheDirectory;
} elseif ( $wgCacheDirectory ) {
$dir = "$wgCacheDirectory/object";
} else {
throw new MWException( 'Please set $wgCacheDirectory in LocalSettings.php if you wish to use the HTML file cache' );
}
return $dir;
}
/**
* Check if pages can be cached for this request/user
* @param $context RequestContext
* @return bool
*/
public static function useFileCache( RequestContext $context ) {
global $wgUseFileCache, $wgShowIPinHeader, $wgContLang;
if ( !$wgUseFileCache ) {
return false;
}
// Get all query values
$queryVals = $context->getRequest()->getValues();
foreach ( $queryVals as $query => $val ) {
if ( $query == 'title' || $query == 'curid' ) {
continue; // note: curid sets title
// Normal page view in query form can have action=view.
// Raw hits for pages also stored, like .css pages for example.
} elseif ( $query == 'action' && in_array( $val, self::cacheablePageActions() ) ) {
continue;
// Below are header setting params
} elseif ( $query == 'maxage' || $query == 'smaxage' ) {
continue;
} else {
return false;
}
}
$user = $context->getUser();
// Check for non-standard user language; this covers uselang,
// and extensions for auto-detecting user language.
$ulang = $context->getLang()->getCode();
$clang = $wgContLang->getCode();
// Check that there are no other sources of variation
return !$wgShowIPinHeader && !$user->getId() && !$user->getNewtalk() && $ulang == $clang;
}
/**
* Read from cache to context output
* @param $context RequestContext
* @return void
*/
public function loadFromFileCache( RequestContext $context ) {
global $wgMimeType, $wgLanguageCode;
wfDebug( __METHOD__ . "()\n");
$filename = $this->cachePath();
$context->getOutput()->sendCacheControl();
header( "Content-Type: $wgMimeType; charset=UTF-8" );
header( "Content-Language: $wgLanguageCode" );
if ( $this->useGzip() ) {
if ( wfClientAcceptsGzip() ) {
header( 'Content-Encoding: gzip' );
} else {
/* Send uncompressed */
readgzfile( $filename );
return;
}
}
readfile( $filename );
$context->getOutput()->disable(); // tell $wgOut that output is taken care of
}
/**
* Save this cache object with the given text.
* Use this as an ob_start() handler.
* @param $text string
* @return bool Whether $wgUseFileCache is enabled
*/
public function saveToFileCache( $text ) {
global $wgUseFileCache;
if ( !$wgUseFileCache || strlen( $text ) < 512 ) {
// Disabled or empty/broken output (OOM and PHP errors)
return $text;
}
wfDebug( __METHOD__ . "()\n", false);
$now = wfTimestampNow();
if ( $this->useGzip() ) {
$text = str_replace(
'