001    /*
002     * Copyright (C) 2008-2010 by Holger Arndt
003     *
004     * This file is part of the Universal Java Matrix Package (UJMP).
005     * See the NOTICE file distributed with this work for additional
006     * information regarding copyright ownership and licensing.
007     *
008     * UJMP is free software; you can redistribute it and/or modify
009     * it under the terms of the GNU Lesser General Public License as
010     * published by the Free Software Foundation; either version 2
011     * of the License, or (at your option) any later version.
012     *
013     * UJMP is distributed in the hope that it will be useful,
014     * but WITHOUT ANY WARRANTY; without even the implied warranty of
015     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
016     * GNU Lesser General Public License for more details.
017     *
018     * You should have received a copy of the GNU Lesser General Public
019     * License along with UJMP; if not, write to the
020     * Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
021     * Boston, MA  02110-1301  USA
022     */
023    
024    package org.ujmp.core.io;
025    
026    import java.io.File;
027    import java.io.IOException;
028    import java.io.OutputStream;
029    import java.io.OutputStreamWriter;
030    import java.io.Writer;
031    
032    import org.ujmp.core.Matrix;
033    import org.ujmp.core.exceptions.MatrixException;
034    import org.ujmp.core.util.io.IntelligentFileWriter;
035    
036    public abstract class ExportMatrixCSV {
037    
038            private static String separator = "\t";
039    
040            public static void toFile(File file, Matrix matrix, Object... parameters) throws IOException,
041                            MatrixException {
042                    IntelligentFileWriter writer = new IntelligentFileWriter(file);
043                    toWriter(writer, matrix, parameters);
044                    writer.close();
045            }
046    
047            public static void toStream(OutputStream outputStream, Matrix matrix, Object... parameters)
048                            throws IOException, MatrixException {
049                    OutputStreamWriter writer = new OutputStreamWriter(outputStream);
050                    toWriter(writer, matrix, parameters);
051                    writer.close();
052            }
053    
054            public static void toWriter(Writer writer, Matrix matrix, Object... parameters)
055                            throws IOException, MatrixException {
056                    String lineend = System.getProperty("line.separator");
057                    long rowCount = matrix.getRowCount();
058                    long colCount = matrix.getColumnCount();
059                    for (int row = 0; row < rowCount; row++) {
060                            for (int col = 0; col < colCount; col++) {
061                                    writer.append("" + matrix.getAsObject(row, col));
062                                    if (col < colCount - 1) {
063                                            writer.append(separator);
064                                    }
065                            }
066                            if (row < rowCount - 1) {
067                                    writer.append(lineend);
068                            }
069                    }
070            }
071    }