| // Adapted from the patch of kenton@google.com (Kenton Varda) |
| // See https://github.com/google/protobuf/pull/710 for details. |
| |
| #include <google/protobuf/util/delimited_message_util.h> |
| |
| namespace google { |
| namespace protobuf { |
| namespace util { |
| |
| bool SerializeDelimitedToFileDescriptor(const MessageLite& message, int file_descriptor) { |
| io::FileOutputStream output(file_descriptor); |
| return SerializeDelimitedToZeroCopyStream(message, &output); |
| } |
| |
| bool SerializeDelimitedToOstream(const MessageLite& message, std::ostream* output) { |
| { |
| io::OstreamOutputStream zero_copy_output(output); |
| if (!SerializeDelimitedToZeroCopyStream(message, &zero_copy_output)) return false; |
| } |
| return output->good(); |
| } |
| |
| bool ParseDelimitedFromZeroCopyStream(MessageLite* message, io::ZeroCopyInputStream* input, bool* clean_eof) { |
| google::protobuf::io::CodedInputStream coded_input(input); |
| return ParseDelimitedFromCodedStream(message, &coded_input, clean_eof); |
| } |
| |
| bool ParseDelimitedFromCodedStream(MessageLite* message, io::CodedInputStream* input, bool* clean_eof) { |
| if (clean_eof != NULL) *clean_eof = false; |
| int start = input->CurrentPosition(); |
| |
| // Read the size. |
| uint32 size; |
| if (!input->ReadVarint32(&size)) { |
| if (clean_eof != NULL) *clean_eof = input->CurrentPosition() == start; |
| return false; |
| } |
| |
| // Tell the stream not to read beyond that size. |
| google::protobuf::io::CodedInputStream::Limit limit = input->PushLimit(size); |
| |
| // Parse the message. |
| if (!message->MergeFromCodedStream(input)) return false; |
| if (!input->ConsumedEntireMessage()) return false; |
| |
| // Release the limit. |
| input->PopLimit(limit); |
| |
| return true; |
| } |
| |
| bool SerializeDelimitedToZeroCopyStream(const MessageLite& message, io::ZeroCopyOutputStream* output) { |
| google::protobuf::io::CodedOutputStream coded_output(output); |
| return SerializeDelimitedToCodedStream(message, &coded_output); |
| } |
| |
| bool SerializeDelimitedToCodedStream(const MessageLite& message, io::CodedOutputStream* output) { |
| // Write the size. |
| int size = message.ByteSize(); |
| output->WriteVarint32(size); |
| |
| // Write the content. |
| uint8* buffer = output->GetDirectBufferForNBytesAndAdvance(size); |
| if (buffer != NULL) { |
| // Optimization: The message fits in one buffer, so use the faster |
| // direct-to-array serialization path. |
| message.SerializeWithCachedSizesToArray(buffer); |
| } else { |
| // Slightly-slower path when the message is multiple buffers. |
| message.SerializeWithCachedSizes(output); |
| if (output->HadError()) return false; |
| } |
| |
| return true; |
| } |
| |
| } // namespace util |
| } // namespace protobuf |
| } // namespace google |