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 ExportMatrixSPARSECSV { 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"); 057 058 for (long[] c : matrix.availableCoordinates()) { 059 writer.append(c[Matrix.ROW] + separator); 060 writer.append(c[Matrix.COLUMN] + separator); 061 writer.append(matrix.getAsString(c) + lineend); 062 } 063 } 064 }