Merge branch 'master' of gitorious.org:owncloud/owncloud

4 files changed, 126 insertions, 4 deletions

diff --git a/lib/base.php b/lib/base.php
index 30f7e5bba63..94ae26c4d1b 100644
--- a/lib/base.php
+++ b/lib/base.php
@@ -282,7 +282,7 @@ class OC{
 			if(substr(OC::$REQUESTEDFILE, -3) == 'css'){
 				$file = 'apps/' . OC::$REQUESTEDAPP . '/' . OC::$REQUESTEDFILE;
 				$minimizer = new OC_Minimizer_CSS();
-				$minimizer->output(array(array(OC::$APPSROOT, OC::$APPSWEBROOT, $file)));
+				$minimizer->output(array(array(OC::$APPSROOT, OC::$APPSWEBROOT, $file)), $file);
 				exit;
 			}elseif(substr(OC::$REQUESTEDFILE, -3) == 'php'){
 				require_once(OC::$APPSROOT . '/apps/' . OC::$REQUESTEDAPP . '/' . OC::$REQUESTEDFILE);
diff --git a/lib/cache/fileglobal.php b/lib/cache/fileglobal.php
new file mode 100644
index 00000000000..1c2c9bdc82d
--- /dev/null
+++ b/lib/cache/fileglobal.php
@@ -0,0 +1,78 @@
+<?php
+/**
+ * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+
+class OC_Cache_FileGlobal{
+	protected function getCacheDir() {
+		$cache_dir = get_temp_dir().'/owncloud-'.OC_Util::getInstanceId().'/';
+		if (!is_dir($cache_dir)) {
+			mkdir($cache_dir);
+		}
+		return $cache_dir;
+	}
+
+	protected function fixKey($key) {
+		return str_replace('/', '_', $key);
+	}
+
+	public function get($key) {
+		$key = $this->fixKey($key);
+		if ($this->hasKey($key)) {
+			$cache_dir = $this->getCacheDir();
+			return file_get_contents($cache_dir.$key);
+		}
+		return null;
+	}
+
+	public function set($key, $value, $ttl=0) {
+		$key = $this->fixKey($key);
+		$cache_dir = $this->getCacheDir();
+		if ($cache_dir and file_put_contents($cache_dir.$key, $value)) {
+			if ($ttl === 0) {
+				$ttl = 86400; // 60*60*24
+			}
+			return touch($cache_dir.$key, time() + $ttl);
+		}
+		return false;
+	}
+
+	public function hasKey($key) {
+		$key = $this->fixKey($key);
+		$cache_dir = $this->getCacheDir();
+		if ($cache_dir && is_file($cache_dir.$key)) {
+			$mtime = filemtime($cache_dir.$key);
+			if ($mtime < time()) {
+				unlink($cache_dir.$key);
+				return false;
+			}
+			return true;
+		}
+		return false;
+	}
+
+	public function remove($key) {
+		$cache_dir = $this->getCacheDir();
+		if(!$cache_dir){
+			return false;
+		}
+		$key = $this->fixKey($key);
+		return unlink($cache_dir.$key);
+	}
+
+	public function clear(){
+		$cache_dir = $this->getCacheDir();
+		if($cache_dir and is_dir($cache_dir)){
+			$dh=opendir($cache_dir);
+			while($file=readdir($dh)){
+				if($file!='.' and $file!='..'){
+					unlink($cache_dir.$file);
+				}
+			}
+		}
+	}
+}
diff --git a/lib/minimizer.php b/lib/minimizer.php
index 9f9ef086c4a..428fa477f77 100644
--- a/lib/minimizer.php
+++ b/lib/minimizer.php
@@ -26,14 +26,30 @@ abstract class OC_Minimizer
 
 	abstract public function minimizeFiles($files);
 
-	public function output($files) {
+	public function output($files, $cache_key) {
 		header('Content-Type: '.$this->contentType);
 		OC_Response::enableCaching();
 		$last_modified = $this->getLastModified($files);
 		OC_Response::setLastModifiedHeader($last_modified);
 
-		$out = $this->minimizeFiles($files);
-		OC_Response::setETagHeader(md5($out));
+		$gzout = false;
+		$cache = new OC_Cache_FileGlobal();
+		if (!OC_Request::isNoCache() && (!defined('DEBUG') || !DEBUG)){
+			$gzout = $cache->get($cache_key.'.gz');
+			OC_Response::setETagHeader(md5($gzout));
+		}
+
+		if (!$gzout) {
+			$out = $this->minimizeFiles($files);
+			$gzout = gzencode($out);
+			$cache->set($cache_key.'.gz', $gzout);
+		}
+		if ($encoding = OC_Request::acceptGZip()) {
+			header('Content-Encoding: '.$encoding);
+			$out = $gzout;
+		} else {
+			$out = gzdecode($gzout);
+		}
 		header('Content-Length: '.strlen($out));
 		echo $out;
 	}
diff --git a/lib/request.php b/lib/request.php
new file mode 100644
index 00000000000..0b5aaf8ef30
--- /dev/null
+++ b/lib/request.php
@@ -0,0 +1,28 @@
+<?php
+/**
+ * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+class OC_Request {
+	static public function isNoCache() {
+		if (!isset($_SERVER['HTTP_CACHE_CONTROL'])) {
+			return false;
+		}
+		return $_SERVER['HTTP_CACHE_CONTROL'] == 'no-cache';
+	}
+
+	static public function acceptGZip() {
+		if (!isset($_SERVER['HTTP_ACCEPT_ENCODING'])) {
+			return false;
+		}
+		$HTTP_ACCEPT_ENCODING = $_SERVER["HTTP_ACCEPT_ENCODING"];
+		if( strpos($HTTP_ACCEPT_ENCODING, 'x-gzip') !== false )
+			return 'x-gzip';
+		else if( strpos($HTTP_ACCEPT_ENCODING,'gzip') !== false )
+			return 'gzip';
+		return false;
+	}
+}