Page Speed Optimization Libraries
1.7.30.3
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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 */ 00017 00018 #ifndef NET_INSTAWEB_REWRITER_PUBLIC_JAVASCRIPT_LIBRARY_IDENTIFICATION_H_ 00019 #define NET_INSTAWEB_REWRITER_PUBLIC_JAVASCRIPT_LIBRARY_IDENTIFICATION_H_ 00020 00021 #include <map> 00022 00023 #include "net/instaweb/util/public/basictypes.h" 00024 #include "net/instaweb/util/public/string.h" 00025 #include "net/instaweb/util/public/string_util.h" 00026 00027 namespace net_instaweb { 00028 00034 class JavascriptLibraryIdentification { 00035 public: 00036 typedef uint64 SizeInBytes; 00037 00038 static const int kNumHashChars = (126 + 5) / 6; 00039 00040 JavascriptLibraryIdentification() { } 00041 ~JavascriptLibraryIdentification(); 00042 00043 bool empty() const { return libraries_.empty(); } 00044 00047 bool RegisterLibrary( 00048 SizeInBytes bytes, StringPiece md5_hash, StringPiece canonical_url); 00051 StringPiece Find(StringPiece minified_code) const; 00053 void Merge(const JavascriptLibraryIdentification& src); 00055 void AppendSignature(GoogleString* signature) const; 00056 00057 private: 00058 class LibraryInfo; 00062 typedef GoogleString MD5Signature; 00063 typedef std::map<MD5Signature, GoogleString> MD5ToUrlMap; 00064 typedef std::map<SizeInBytes, MD5ToUrlMap> LibraryMap; 00065 00066 LibraryMap libraries_; 00067 00069 }; 00070 00071 } 00072 00073 #endif ///< NET_INSTAWEB_REWRITER_PUBLIC_JAVASCRIPT_LIBRARY_IDENTIFICATION_H_