| // |
| // Copyright (C) 2014 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| // |
| |
| #ifndef SHILL_PROTOBUF_LITE_STREAMS_H_ |
| #define SHILL_PROTOBUF_LITE_STREAMS_H_ |
| |
| #include <string> |
| |
| #include <base/files/scoped_file.h> |
| #include <google/protobuf/io/zero_copy_stream_impl_lite.h> |
| |
| // Some basic input/output streams are not implemented for protobuf-lite. |
| |
| namespace shill { |
| |
| // Attempts to create a |google::protobuf::io::CopyingInputStreamAdaptor| using |
| // a |shill::ProtobufLiteCopyingFileInputStream|. Returns a new instance on |
| // success. The caller owns the new instance, and must free it when done. |
| // Returns nullptr on failure. |
| google::protobuf::io::CopyingInputStreamAdaptor * |
| protobuf_lite_file_input_stream(const std::string& file_path); |
| |
| |
| class ProtobufLiteCopyingFileInputStream : |
| public google::protobuf::io::CopyingInputStream { |
| public: |
| // Takes ownership of |fd| and closes it when the object is deleted. |
| explicit ProtobufLiteCopyingFileInputStream(int fd); |
| ~ProtobufLiteCopyingFileInputStream() override; |
| int Read(void* buffer, int size) override; |
| int Skip(int count) override; |
| private: |
| int fd_; |
| base::ScopedFD scoped_fd_closer_; |
| bool previous_seek_failed_; |
| |
| DISALLOW_COPY_AND_ASSIGN(ProtobufLiteCopyingFileInputStream); |
| }; |
| |
| } // namespace shill |
| |
| #endif // SHILL_PROTOBUF_LITE_STREAMS_H_ |