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.UJMPFormat;
035    import org.ujmp.core.util.io.IntelligentFileWriter;
036    
037    public class ExportMatrixTEX {
038    
039            public static final void toFile(File file, Matrix m, Object... parameters) throws IOException {
040                    IntelligentFileWriter w = new IntelligentFileWriter(file);
041                    toWriter(w, m, parameters);
042                    w.close();
043            }
044    
045            public static final void toStream(OutputStream out, Matrix m, Object... parameters)
046                            throws IOException {
047                    OutputStreamWriter w = new OutputStreamWriter(out);
048                    toWriter(w, m, parameters);
049                    w.close();
050            }
051    
052            public static void toWriter(Writer w, Matrix m, Object... parameters) throws IOException,
053                            MatrixException {
054                    String EOL = System.getProperty("line.separator");
055    
056                    long rowCount = m.getRowCount();
057                    long colCount = m.getColumnCount();
058    
059                    w.write("\\begin{table}[!ht]" + EOL);
060                    w.write("\\centering" + EOL);
061    
062                    if (m.getMatrixAnnotation() != null) {
063                            w.write("\\caption{"
064                                            + UJMPFormat.getSingleLineInstance().format(m.getMatrixAnnotation()) + "}"
065                                            + EOL);
066                    }
067    
068                    StringBuilder buf = new StringBuilder();
069                    for (long i = m.getColumnCount() - 1; i != -1; i--) {
070                            buf.append('c');
071                    }
072                    String alignment = buf.toString();
073    
074                    w.write("\\begin{tabular}{" + alignment + "}" + EOL);
075                    w.write("\\toprule" + EOL);
076    
077                    for (int row = 0; row < rowCount; row++) {
078                            for (int col = 0; col < colCount; col++) {
079                                    w.write(UJMPFormat.getSingleLineInstance().format(m.getAsObject(row, col)));
080    
081                                    if (col < colCount - 1) {
082                                            w.write(" & ");
083                                    }
084                            }
085                            w.write(" \\\\" + EOL);
086                    }
087    
088                    w.write("\\bottomrule" + EOL);
089                    w.write("\\end{tabular}" + EOL);
090                    w.write("\\end{table}" + EOL);
091            }
092    }