51 lines
1.6 KiB
C++
51 lines
1.6 KiB
C++
// Copyright 2010-2025 Google LLC
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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#include "ortools/sat/recordio.h"
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#include <cstdint>
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#include <istream>
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#include <ostream>
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#include "google/protobuf/message_lite.h"
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namespace operations_research {
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namespace sat {
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RecordReader::RecordReader(std::istream* istream)
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: istream_(istream), coded_istream_(&istream_) {}
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bool RecordReader::ReadRecord(google::protobuf::MessageLite* record) {
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uint32_t size;
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if (!coded_istream_.ReadVarint32(&size)) return false;
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auto limit = coded_istream_.PushLimit(size);
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if (!record->ParseFromCodedStream(&coded_istream_)) return false;
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coded_istream_.PopLimit(limit);
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return true;
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}
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void RecordReader::Close() {}
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RecordWriter::RecordWriter(std::ostream* ostream)
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: ostream_(ostream), coded_ostream_(&ostream_) {}
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bool RecordWriter::WriteRecord(const google::protobuf::MessageLite& record) {
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coded_ostream_.WriteVarint32(record.ByteSizeLong());
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return record.SerializeToCodedStream(&coded_ostream_);
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}
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void RecordWriter::Close() { coded_ostream_.Trim(); }
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} // namespace sat
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} // namespace operations_research
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