1 // Protocol Buffers - Google's data interchange format 2 // Copyright 2008 Google Inc. All rights reserved. 3 // http://code.google.com/p/protobuf/ 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 // Author: kenton (at) google.com (Kenton Varda) 32 // Based on original Protocol Buffers design by 33 // Sanjay Ghemawat, Jeff Dean, and others. 34 35 #include <google/protobuf/stubs/common.h> 36 #include <google/protobuf/unknown_field_set.h> 37 #include <google/protobuf/stubs/stl_util-inl.h> 38 #include <google/protobuf/io/coded_stream.h> 39 #include <google/protobuf/io/zero_copy_stream.h> 40 #include <google/protobuf/io/zero_copy_stream_impl.h> 41 #include <google/protobuf/wire_format.h> 42 43 namespace google { 44 namespace protobuf { 45 46 UnknownFieldSet::UnknownFieldSet() 47 : fields_(NULL) {} 48 49 UnknownFieldSet::~UnknownFieldSet() { 50 Clear(); 51 delete fields_; 52 } 53 54 void UnknownFieldSet::ClearFallback() { 55 GOOGLE_DCHECK(fields_ != NULL); 56 for (int i = 0; i < fields_->size(); i++) { 57 (*fields_)[i].Delete(); 58 } 59 fields_->clear(); 60 } 61 62 void UnknownFieldSet::MergeFrom(const UnknownFieldSet& other) { 63 for (int i = 0; i < other.field_count(); i++) { 64 AddField(other.field(i)); 65 } 66 } 67 68 int UnknownFieldSet::SpaceUsedExcludingSelf() const { 69 if (fields_ == NULL) return 0; 70 71 int total_size = sizeof(*fields_) + sizeof(UnknownField) * fields_->size(); 72 for (int i = 0; i < fields_->size(); i++) { 73 const UnknownField& field = (*fields_)[i]; 74 switch (field.type()) { 75 case UnknownField::TYPE_LENGTH_DELIMITED: 76 total_size += sizeof(*field.length_delimited_) + 77 internal::StringSpaceUsedExcludingSelf(*field.length_delimited_); 78 break; 79 case UnknownField::TYPE_GROUP: 80 total_size += field.group_->SpaceUsed(); 81 break; 82 default: 83 break; 84 } 85 } 86 return total_size; 87 } 88 89 int UnknownFieldSet::SpaceUsed() const { 90 return sizeof(*this) + SpaceUsedExcludingSelf(); 91 } 92 93 void UnknownFieldSet::AddVarint(int number, uint64 value) { 94 if (fields_ == NULL) fields_ = new vector<UnknownField>; 95 UnknownField field; 96 field.number_ = number; 97 field.type_ = UnknownField::TYPE_VARINT; 98 field.varint_ = value; 99 fields_->push_back(field); 100 } 101 102 void UnknownFieldSet::AddFixed32(int number, uint32 value) { 103 if (fields_ == NULL) fields_ = new vector<UnknownField>; 104 UnknownField field; 105 field.number_ = number; 106 field.type_ = UnknownField::TYPE_FIXED32; 107 field.fixed32_ = value; 108 fields_->push_back(field); 109 } 110 111 void UnknownFieldSet::AddFixed64(int number, uint64 value) { 112 if (fields_ == NULL) fields_ = new vector<UnknownField>; 113 UnknownField field; 114 field.number_ = number; 115 field.type_ = UnknownField::TYPE_FIXED64; 116 field.fixed64_ = value; 117 fields_->push_back(field); 118 } 119 120 string* UnknownFieldSet::AddLengthDelimited(int number) { 121 if (fields_ == NULL) fields_ = new vector<UnknownField>; 122 UnknownField field; 123 field.number_ = number; 124 field.type_ = UnknownField::TYPE_LENGTH_DELIMITED; 125 field.length_delimited_ = new string; 126 fields_->push_back(field); 127 return field.length_delimited_; 128 } 129 130 UnknownFieldSet* UnknownFieldSet::AddGroup(int number) { 131 if (fields_ == NULL) fields_ = new vector<UnknownField>; 132 UnknownField field; 133 field.number_ = number; 134 field.type_ = UnknownField::TYPE_GROUP; 135 field.group_ = new UnknownFieldSet; 136 fields_->push_back(field); 137 return field.group_; 138 } 139 140 void UnknownFieldSet::AddField(const UnknownField& field) { 141 if (fields_ == NULL) fields_ = new vector<UnknownField>; 142 fields_->push_back(field); 143 fields_->back().DeepCopy(); 144 } 145 146 bool UnknownFieldSet::MergeFromCodedStream(io::CodedInputStream* input) { 147 148 UnknownFieldSet other; 149 if (internal::WireFormat::SkipMessage(input, &other) && 150 input->ConsumedEntireMessage()) { 151 MergeFrom(other); 152 return true; 153 } else { 154 return false; 155 } 156 } 157 158 bool UnknownFieldSet::ParseFromCodedStream(io::CodedInputStream* input) { 159 Clear(); 160 return MergeFromCodedStream(input); 161 } 162 163 bool UnknownFieldSet::ParseFromZeroCopyStream(io::ZeroCopyInputStream* input) { 164 io::CodedInputStream coded_input(input); 165 return ParseFromCodedStream(&coded_input) && 166 coded_input.ConsumedEntireMessage(); 167 } 168 169 bool UnknownFieldSet::ParseFromArray(const void* data, int size) { 170 io::ArrayInputStream input(data, size); 171 return ParseFromZeroCopyStream(&input); 172 } 173 174 void UnknownField::Delete() { 175 switch (type()) { 176 case UnknownField::TYPE_LENGTH_DELIMITED: 177 delete length_delimited_; 178 break; 179 case UnknownField::TYPE_GROUP: 180 delete group_; 181 break; 182 default: 183 break; 184 } 185 } 186 187 void UnknownField::DeepCopy() { 188 switch (type()) { 189 case UnknownField::TYPE_LENGTH_DELIMITED: 190 length_delimited_ = new string(*length_delimited_); 191 break; 192 case UnknownField::TYPE_GROUP: { 193 UnknownFieldSet* group = new UnknownFieldSet; 194 group->MergeFrom(*group_); 195 group_ = group; 196 break; 197 } 198 default: 199 break; 200 } 201 } 202 203 } // namespace protobuf 204 } // namespace google 205