| // 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. |
| // |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| #include "tink/python/cc/output_stream_adapter.h" |
| |
| #include <algorithm> |
| |
| #include "absl/strings/string_view.h" |
| #include "tink/util/status.h" |
| #include "tink/util/statusor.h" |
| |
| namespace crypto { |
| namespace tink { |
| |
| util::StatusOr<int64_t> OutputStreamAdapter::Write(absl::string_view data) { |
| void* buffer; |
| int64_t written = 0; |
| while (written < data.size()) { |
| auto next_result = stream_->Next(&buffer); |
| if (!next_result.ok()) return next_result.status(); |
| int available = next_result.ValueOrDie(); |
| int write_count = |
| std::min(available, static_cast<int>(data.size() - written)); |
| memcpy(buffer, data.data() + written, write_count); |
| if (write_count < available) stream_->BackUp(available - write_count); |
| written += write_count; |
| } |
| return written; |
| } |
| |
| util::Status OutputStreamAdapter::Close() { return stream_->Close(); } |
| |
| } // namespace tink |
| } // namespace crypto |