73 lines
2.1 KiB
C++
73 lines
2.1 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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// Parses vector packing data files, and creates a VectorBinPackingProblem
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//
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// The supported file formats are:
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// - vector packing solver: (.vbp files)
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// http://www.dcc.fc.up.pt/~fdabrandao/Vector_Packing_Solver
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#ifndef ORTOOLS_PACKING_VECTOR_BIN_PACKING_PARSER_H_
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#define ORTOOLS_PACKING_VECTOR_BIN_PACKING_PARSER_H_
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#include <cstdint>
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#include <string>
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#include <vector>
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#include "absl/strings/string_view.h"
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#include "ortools/base/types.h"
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#include "ortools/packing/vector_bin_packing.pb.h"
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namespace operations_research {
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namespace packing {
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namespace vbp {
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class VbpParser {
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public:
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// Return true iff there were no error, in which case problem() can be
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// called to retrieve the parsed problem.
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bool ParseFile(absl::string_view data_filename);
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// We keep the fully qualified name for SWIG.
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::operations_research::packing::vbp::VectorBinPackingProblem problem() const {
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return vbp_;
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}
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private:
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enum LoadStatus {
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NOT_STARTED,
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DIMENSION_SECTION,
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BIN_SECTION,
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NUMBER_OF_ITEMS_SECTION,
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ITEM_SECTION,
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ERROR_FOUND
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};
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void ProcessLine(const std::string& line);
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void ReportError(const std::string& line);
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int strtoint32(absl::string_view word);
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int64_t strtoint64(absl::string_view word);
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LoadStatus load_status_ = NOT_STARTED;
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int num_declared_items_ = -1;
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int num_resources_ = -1;
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VectorBinPackingProblem vbp_;
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};
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} // namespace vbp
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} // namespace packing
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} // namespace operations_research
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#endif // ORTOOLS_PACKING_VECTOR_BIN_PACKING_PARSER_H_
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