Page Speed Optimization Libraries
1.2.24.1
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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/rewriter/public/server_context.h" 00026 #include "net/instaweb/util/public/basictypes.h" 00027 #include "net/instaweb/util/public/data_url.h" 00028 #include "net/instaweb/util/public/scoped_ptr.h" 00029 #include "net/instaweb/util/public/string.h" 00030 #include "net/instaweb/util/public/string_util.h" 00031 00032 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_DATA_URL_INPUT_RESOURCE_H_ 00033 #define NET_INSTAWEB_REWRITER_PUBLIC_DATA_URL_INPUT_RESOURCE_H_ 00034 00035 namespace net_instaweb { 00036 00037 class ContentType; 00038 class InputInfo; 00039 class MessageHandler; 00040 class RewriteOptions; 00041 enum Encoding; 00042 00043 class DataUrlInputResource : public Resource { 00044 public: 00046 static ResourcePtr Make(const StringPiece& url, 00047 ServerContext* resource_manager) { 00048 ResourcePtr resource; 00049 const ContentType* type; 00050 Encoding encoding; 00051 StringPiece encoded_contents; 00055 GoogleString* url_copy = new GoogleString(); 00056 url.CopyToString(url_copy); 00057 if (ParseDataUrl(*url_copy, &type, &encoding, &encoded_contents)) { 00058 resource.reset(new DataUrlInputResource(url_copy, encoding, type, 00059 encoded_contents, 00060 resource_manager)); 00061 } 00062 return resource; 00063 } 00064 00065 virtual ~DataUrlInputResource(); 00066 00067 virtual bool IsValidAndCacheable() const; 00068 00070 virtual void FillInPartitionInputInfo(HashHint include_content_hash, 00071 InputInfo* input); 00072 00073 virtual GoogleString url() const { return *url_.get(); } 00074 virtual const RewriteOptions* rewrite_options() const { 00075 LOG(DFATAL) << "Unexpected call to DataUrlInputResource::rewrite_options()"; 00076 return NULL; 00077 } 00078 00079 protected: 00080 virtual bool Load(MessageHandler* message_handler); 00081 virtual bool IsCacheable() const; 00082 00083 private: 00084 DataUrlInputResource(const GoogleString* url, 00085 Encoding encoding, 00086 const ContentType* type, 00087 const StringPiece& encoded_contents, 00088 ServerContext* server_context) 00089 : Resource(server_context, type), 00090 url_(url), 00091 encoding_(encoding), 00092 encoded_contents_(encoded_contents) { 00094 Load(server_context->message_handler()); 00095 } 00096 00097 scoped_ptr<const GoogleString> url_; 00098 const Encoding encoding_; 00099 const StringPiece encoded_contents_; 00100 GoogleString decoded_contents_; 00101 00102 DISALLOW_COPY_AND_ASSIGN(DataUrlInputResource); 00103 }; 00104 00105 } 00106 00107 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_DATA_URL_INPUT_RESOURCE_H_