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 {
GetTypeUrl(const Descriptor * message,const string & type_url_prefix)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
AnyMetadata(UrlType * type_url,ValueType * value)53 AnyMetadata::AnyMetadata(UrlType* type_url, ValueType* value)
54 : type_url_(type_url), value_(value) {
55 }
56
PackFrom(const Message & message)57 void AnyMetadata::PackFrom(const Message& message) {
58 PackFrom(message, kTypeGoogleApisComPrefix);
59 }
60
PackFrom(const Message & message,const string & type_url_prefix)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
UnpackTo(Message * message) const69 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
InternalIs(const Descriptor * descriptor) const77 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
ParseAnyTypeUrl(const string & type_url,string * full_type_name)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
GetAnyFieldDescriptors(const Message & message,const FieldDescriptor ** type_url_field,const FieldDescriptor ** value_field)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