Page Speed Optimization Libraries
1.4.26.1
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00001 /* 00002 * Copyright 2010 Google Inc. 00003 * 00004 * Licensed under the Apache License, Version 2.0 (the "License"); 00005 * you may not use this file except in compliance with the License. 00006 * You may obtain a copy of the License at 00007 * 00008 * http:///www.apache.org/licenses/LICENSE-2.0 00009 * 00010 * Unless required by applicable law or agreed to in writing, software 00011 * distributed under the License is distributed on an "AS IS" BASIS, 00012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 00013 * See the License for the specific language governing permissions and 00014 * limitations under the License. 00015 */ 00016 00022 00023 #include "base/logging.h" 00024 #include "net/instaweb/rewriter/public/resource.h" 00025 #include "net/instaweb/util/public/basictypes.h" 00026 #include "net/instaweb/util/public/data_url.h" 00027 #include "net/instaweb/util/public/scoped_ptr.h" 00028 #include "net/instaweb/util/public/string.h" 00029 #include "net/instaweb/util/public/string_util.h" 00030 00031 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_DATA_URL_INPUT_RESOURCE_H_ 00032 #define NET_INSTAWEB_REWRITER_PUBLIC_DATA_URL_INPUT_RESOURCE_H_ 00033 00034 namespace net_instaweb { 00035 00036 class ContentType; 00037 class InputInfo; 00038 class MessageHandler; 00039 class RewriteOptions; 00040 class ServerContext; 00041 00042 enum Encoding; 00043 00044 class DataUrlInputResource : public Resource { 00045 public: 00047 static ResourcePtr Make(const StringPiece& url, 00048 ServerContext* resource_manager) { 00049 ResourcePtr resource; 00050 const ContentType* type; 00051 Encoding encoding; 00052 StringPiece encoded_contents; 00056 GoogleString* url_copy = new GoogleString(); 00057 url.CopyToString(url_copy); 00058 if (ParseDataUrl(*url_copy, &type, &encoding, &encoded_contents)) { 00059 resource.reset(new DataUrlInputResource(url_copy, encoding, type, 00060 encoded_contents, 00061 resource_manager)); 00062 } 00063 return resource; 00064 } 00065 00066 virtual ~DataUrlInputResource(); 00067 00068 virtual bool IsValidAndCacheable() const; 00069 00071 virtual void FillInPartitionInputInfo(HashHint include_content_hash, 00072 InputInfo* input); 00073 00074 virtual GoogleString url() const { return *url_.get(); } 00075 virtual const RewriteOptions* rewrite_options() const { 00076 LOG(DFATAL) << "Unexpected call to DataUrlInputResource::rewrite_options()"; 00077 return NULL; 00078 } 00079 00080 virtual bool UseHttpCache() const { return false; } 00081 00082 protected: 00083 virtual void LoadAndCallback(NotCacheablePolicy not_cacheable_policy, 00084 AsyncCallback* callback, 00085 MessageHandler* message_handler); 00086 00087 private: 00088 DataUrlInputResource(const GoogleString* url, 00089 Encoding encoding, 00090 const ContentType* type, 00091 const StringPiece& encoded_contents, 00092 ServerContext* server_context); 00093 00094 scoped_ptr<const GoogleString> url_; 00095 const Encoding encoding_; 00096 const StringPiece encoded_contents_; 00097 GoogleString decoded_contents_; 00098 00099 DISALLOW_COPY_AND_ASSIGN(DataUrlInputResource); 00100 }; 00101 00102 } 00103 00104 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_DATA_URL_INPUT_RESOURCE_H_