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 //
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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,
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25 // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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29 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30
31 // Author: kenton@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
UnknownFieldSet()46 UnknownFieldSet::UnknownFieldSet()
47 : fields_(NULL) {}
48
~UnknownFieldSet()49 UnknownFieldSet::~UnknownFieldSet() {
50 Clear();
51 delete fields_;
52 }
53
ClearFallback()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
MergeFrom(const UnknownFieldSet & other)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
SpaceUsedExcludingSelf() const68 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
SpaceUsed() const89 int UnknownFieldSet::SpaceUsed() const {
90 return sizeof(*this) + SpaceUsedExcludingSelf();
91 }
92
AddVarint(int number,uint64 value)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
AddFixed32(int number,uint32 value)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
AddFixed64(int number,uint64 value)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
AddLengthDelimited(int number)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
AddGroup(int number)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
AddField(const UnknownField & field)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
MergeFromCodedStream(io::CodedInputStream * input)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
ParseFromCodedStream(io::CodedInputStream * input)158 bool UnknownFieldSet::ParseFromCodedStream(io::CodedInputStream* input) {
159 Clear();
160 return MergeFromCodedStream(input);
161 }
162
ParseFromZeroCopyStream(io::ZeroCopyInputStream * input)163 bool UnknownFieldSet::ParseFromZeroCopyStream(io::ZeroCopyInputStream* input) {
164 io::CodedInputStream coded_input(input);
165 return ParseFromCodedStream(&coded_input) &&
166 coded_input.ConsumedEntireMessage();
167 }
168
ParseFromArray(const void * data,int size)169 bool UnknownFieldSet::ParseFromArray(const void* data, int size) {
170 io::ArrayInputStream input(data, size);
171 return ParseFromZeroCopyStream(&input);
172 }
173
Delete()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
DeepCopy()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