1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // https://developers.google.com/protocol-buffers/ 4 // 5 // Redistribution and use in source and binary forms, with or without 6 // modification, are permitted provided that the following conditions are 7 // met: 8 // 9 // * Redistributions of source code must retain the above copyright 10 // notice, this list of conditions and the following disclaimer. 11 // * Redistributions in binary form must reproduce the above 12 // copyright notice, this list of conditions and the following disclaimer 13 // in the documentation and/or other materials provided with the 14 // distribution. 15 // * Neither the name of Google Inc. nor the names of its 16 // contributors may be used to endorse or promote products derived from 17 // this software without specific prior written permission. 18 // 19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 22 // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 23 // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 24 // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 26 // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 27 // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 28 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 30 31 #include <google/protobuf/any.h> 32 33 namespace google { 34 namespace protobuf { 35 namespace internal { 36 37 namespace { 38 string GetTypeUrl(const Descriptor* message, 39 const string& type_url_prefix) { 40 if (!type_url_prefix.empty() && 41 type_url_prefix[type_url_prefix.size() - 1] == '/') { 42 return type_url_prefix + message->full_name(); 43 } else { 44 return type_url_prefix + "/" + message->full_name(); 45 } 46 } 47 } // namespace 48 49 const char kAnyFullTypeName[] = "google.protobuf.Any"; 50 const char kTypeGoogleApisComPrefix[] = "type.googleapis.com/"; 51 const char kTypeGoogleProdComPrefix[] = "type.googleprod.com/"; 52 53 AnyMetadata::AnyMetadata(UrlType* type_url, ValueType* value) 54 : type_url_(type_url), value_(value) { 55 } 56 57 void AnyMetadata::PackFrom(const Message& message) { 58 PackFrom(message, kTypeGoogleApisComPrefix); 59 } 60 61 void AnyMetadata::PackFrom(const Message& message, 62 const string& type_url_prefix) { 63 type_url_->SetNoArena(&::google::protobuf::internal::GetEmptyString(), 64 GetTypeUrl(message.GetDescriptor(), type_url_prefix)); 65 message.SerializeToString(value_->MutableNoArena( 66 &::google::protobuf::internal::GetEmptyStringAlreadyInited())); 67 } 68 69 bool AnyMetadata::UnpackTo(Message* message) const { 70 if (!InternalIs(message->GetDescriptor())) { 71 return false; 72 } 73 return message->ParseFromString( 74 value_->GetNoArena(&::google::protobuf::internal::GetEmptyString())); 75 } 76 77 bool AnyMetadata::InternalIs(const Descriptor* descriptor) const { 78 const string type_url = type_url_->GetNoArena( 79 &::google::protobuf::internal::GetEmptyString()); 80 string full_name; 81 if (!ParseAnyTypeUrl(type_url, &full_name)) { 82 return false; 83 } 84 return full_name == descriptor->full_name(); 85 } 86 87 bool ParseAnyTypeUrl(const string& type_url, string* full_type_name) { 88 size_t pos = type_url.find_last_of("/"); 89 if (pos == string::npos || pos + 1 == type_url.size()) { 90 return false; 91 } 92 *full_type_name = type_url.substr(pos + 1); 93 return true; 94 } 95 96 97 bool GetAnyFieldDescriptors(const Message& message, 98 const FieldDescriptor** type_url_field, 99 const FieldDescriptor** value_field) { 100 const Descriptor* descriptor = message.GetDescriptor(); 101 if (descriptor->full_name() != kAnyFullTypeName) { 102 return false; 103 } 104 *type_url_field = descriptor->FindFieldByNumber(1); 105 *value_field = descriptor->FindFieldByNumber(2); 106 return (*type_url_field != NULL && 107 (*type_url_field)->type() == FieldDescriptor::TYPE_STRING && 108 *value_field != NULL && 109 (*value_field)->type() == FieldDescriptor::TYPE_BYTES); 110 } 111 112 } // namespace internal 113 } // namespace protobuf 114 } // namespace google 115