/*

     This file is part of Combean.

     Combean is free software; you can redistribute it and/or modify

     it under the terms of the GNU General Public License as published by

     the Free Software Foundation; either version 2 of the License, or

     (at your option) any later version.

     Combean 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 General Public License for more details.

     You should have received a copy of the GNU General Public License

     along with Combean; if not, write to the Free Software

     Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA

 */

 /*

  * Created on 04.08.2006

  *

  */

 package net.sourceforge.combean.samples.mathprog.lp.matrixrounding;

 import java.util.Locale;

 import java.util.Scanner;

 import org.apache.commons.logging.Log;

 import org.apache.commons.logging.LogFactory;

 /**

  * Load a matrix from a Readable object.

  * 

  * @author schickin

  *

  */

 public class MatrixToRoundLoader {

     private static Log log =

         LogFactory.getLog(MatrixToRoundLoader.class); 

     private double[][] M = null;

     /**

      * Constructor

      * 

      * @param dataSource the Readable from where the matrix shall be read

      */

     public MatrixToRoundLoader(Readable dataSource) {

         loadMatrix(dataSource);

     }

     /**

      * Fill the internal data structures with data from the Readable.

      * 

      * @param dataSource the Readable from where the matrix shall be read

      */

     private void loadMatrix(Readable dataSource) {

         Scanner scan = new Scanner(dataSource);

         scan.useLocale(Locale.US);

         int numRows = scan.nextInt();

         int numCols = scan.nextInt();

         log.debug(("#rows: " + numRows + ", #cols: " + numCols));

         this.M = new double[numRows][numCols];

         for (int row = 0; row < numRows; row++) {

             for (int col = 0; col < numCols; col++) {

                 this.M[row][col] = scan.nextDouble();

             }

         }

     }

     /**

      * Return the matrix that has been read.

      * 

      * @return Returns the matrix.

      */

     public final double[][] getM() {

         return this.M;

     }

 }