Line data    Source code

       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           0 : string GetTypeUrl(const Descriptor* message) {
      39           0 :   return string(kTypeGoogleApisComPrefix) + message->full_name();
      40             : }
      41             : 
      42             : }  // namespace
      43             : 
      44             : const char kAnyFullTypeName[] = "google.protobuf.Any";
      45             : const char kTypeGoogleApisComPrefix[] = "type.googleapis.com/";
      46             : 
      47           0 : AnyMetadata::AnyMetadata(UrlType* type_url, ValueType* value)
      48           0 :     : type_url_(type_url), value_(value) {
      49           0 : }
      50             : 
      51           0 : void AnyMetadata::PackFrom(const Message& message) {
      52             :   type_url_->SetNoArena(&::google::protobuf::internal::GetEmptyString(),
      53           0 :                         GetTypeUrl(message.GetDescriptor()));
      54             :   message.SerializeToString(value_->MutableNoArena(
      55           0 :       &::google::protobuf::internal::GetEmptyStringAlreadyInited()));
      56           0 : }
      57             : 
      58           0 : bool AnyMetadata::UnpackTo(Message* message) const {
      59           0 :   if (!InternalIs(message->GetDescriptor())) {
      60             :     return false;
      61             :   }
      62             :   return message->ParseFromString(
      63           0 :       value_->GetNoArena(&::google::protobuf::internal::GetEmptyString()));
      64             : }
      65             : 
      66           0 : bool AnyMetadata::InternalIs(const Descriptor* descriptor) const {
      67             :   return type_url_->GetNoArena(
      68           0 :              &::google::protobuf::internal::GetEmptyString()) ==
      69           0 :          GetTypeUrl(descriptor);
      70             : }
      71             : 
      72           0 : bool ParseAnyTypeUrl(const string& type_url, string* full_type_name) {
      73           0 :   const int prefix_len = strlen(kTypeGoogleApisComPrefix);
      74           0 :   if (strncmp(type_url.c_str(), kTypeGoogleApisComPrefix, prefix_len) == 0) {
      75             :     full_type_name->assign(type_url.data() + prefix_len,
      76           0 :                            type_url.size() - prefix_len);
      77           0 :     return true;
      78             :   }
      79             :   return false;
      80             : }
      81             : 
      82             : 
      83          19 : bool GetAnyFieldDescriptors(const Message& message,
      84             :                             const FieldDescriptor** type_url_field,
      85             :                             const FieldDescriptor** value_field) {
      86          19 :     const Descriptor* descriptor = message.GetDescriptor();
      87          38 :     if (descriptor->full_name() != kAnyFullTypeName) {
      88             :       return false;
      89             :     }
      90           0 :     *type_url_field = descriptor->FindFieldByNumber(1);
      91           0 :     *value_field = descriptor->FindFieldByNumber(2);
      92           0 :     return (*type_url_field != NULL &&
      93           0 :             (*type_url_field)->type() == FieldDescriptor::TYPE_STRING &&
      94           0 :             *value_field != NULL &&
      95           0 :             (*value_field)->type() == FieldDescriptor::TYPE_BYTES);
      96             : }
      97             : 
      98             : }  // namespace internal
      99             : }  // namespace protobuf
     100             : }  // namespace google