39 lines
1.4 KiB
C++
39 lines
1.4 KiB
C++
// Copyright 2011 Google Inc. All Rights Reserved.
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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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