50 lines
1.9 KiB
C++
50 lines
1.9 KiB
C++
// Copyright 2010-2012 Google
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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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//
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// Function for reading and parsing a file in DIMACS format:
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// http://lpsolve.sourceforge.net/5.5/DIMACS_asn.htm
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//
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#ifndef OR_TOOLS_EXAMPLES_PARSE_DIMACS_ASSIGNMENT_H_
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#define OR_TOOLS_EXAMPLES_PARSE_DIMACS_ASSIGNMENT_H_
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#include <string>
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#include "graph/ebert_graph.h"
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namespace operations_research {
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template <typename GraphType> class LinearSumAssignment;
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// Reads an assignment problem description from the given file in
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// DIMACS format and returns a LinearSumAssignment object representing
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// the problem description. For a description of the format, see
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// http://lpsolve.sourceforge.net/5.5/DIMACS_asn.htm
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//
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// Also returns an error message (empty if no error) and a handle on
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// the underlying graph representation. The error_message pointer must
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// not be NULL because we insist on returning an explanatory message
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// in the case of error. The graph_handle pointer must not be NULL
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// because unless we pass a non-const pointer to the graph
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// representation back to the caller, the caller lacks a good way to
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// free the underlying graph (which isn't owned by the
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// LinearAssignment instance).
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LinearSumAssignment<ForwardStarGraph>* ParseDimacsAssignment(
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const string& filename,
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string* error_message,
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ForwardStarGraph** graph);
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} // namespace operations_research
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#endif // OR_TOOLS_EXAMPLES_PARSE_DIMACS_ASSIGNMENT_H_
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