GraphColoring/GraphInputOutput.h

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/************************************************************************************
    Copyright (C) 2005-2008 Assefaw H. Gebremedhin, Arijit Tarafdar, Duc Nguyen,
    Alex Pothen

    This file is part of ColPack.

    ColPack is free software: you can redistribute it and/or modify
    it under the terms of the GNU Lesser General Public License as published
    by the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    ColPack is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public License
    along with ColPack.  If not, see <http://www.gnu.org/licenses/>.
************************************************************************************/

#ifndef GRAPHINPUTOUTPUT_H
#define GRAPHINPUTOUTPUT_H

using namespace std;

namespace ColPack
{
        class GraphInputOutput : public GraphCore
        {
        public:


                int BuildGraphFromRowCompressedFormat(unsigned int ** uip2_HessianSparsityPattern, int i_RowCount);


                int ReadAdjacencyGraph(string s_InputFile, string s_fileFormat="AUTO_DETECTED");

                // !!! NEED TO BE FIXED

                int ReadMatrixMarketAdjacencyGraph(string s_InputFile, bool b_getStructureOnly = false);
                

                int WriteMatrixMarket(string s_OutputFile = "-ColPack_debug.mtx", bool b_getStructureOnly = false);

        private:

                // ??? Wonder if this function is useful any more
                int ParseWidth(string FortranFormat);

                void CalculateVertexDegrees();

        public:

                GraphInputOutput();

                ~GraphInputOutput();

                virtual void Clear();

                string GetInputFile();


                int ReadHarwellBoeingAdjacencyGraph(string s_InputFile);

                int ReadMeTiSAdjacencyGraph(string s_InputFile);
                
                // TO BE DOCUMENTED
                // ??? When do I need ReadMeTiSAdjacencyGraph2() instead of ReadMeTiSAdjacencyGraph() ?
                //        probably need ReadMeTiSAdjacencyGraph2() when I need to read from a variant of MeTiS format
                int ReadMeTiSAdjacencyGraph2(string s_InputFile);

                int PrintGraph();

                int PrintGraphStructure();
                int PrintGraphStructure2();

                int PrintMatrix();

                int PrintMatrix(vector<int> &, vector<int> &, vector<double> &);

                void PrintVertexDegrees();
        };
}
#endif