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.stringmatrix.calculation;
025    
026    import java.util.regex.Pattern;
027    
028    import org.ujmp.core.Matrix;
029    import org.ujmp.core.MatrixFactory;
030    import org.ujmp.core.enums.ValueType;
031    import org.ujmp.core.exceptions.MatrixException;
032    
033    public class ReplaceRegex extends AbstractStringCalculation {
034            private static final long serialVersionUID = 8158807887609103123L;
035    
036            private Pattern searchPattern = null;
037    
038            private String replaceString = null;
039    
040            public ReplaceRegex(Matrix matrix, String searchString, String replaceString) {
041                    this(matrix, Pattern.compile(searchString), replaceString);
042            }
043    
044            public ReplaceRegex(Matrix matrix, Pattern searchPattern, String replaceString) {
045                    super(matrix);
046                    this.searchPattern = searchPattern;
047                    this.replaceString = replaceString;
048            }
049    
050            
051            public String getString(long... coordinates) throws MatrixException {
052                    String src = getSource().getAsString(coordinates);
053    
054                    return (src == null) ? null : searchPattern.matcher(src).replaceAll(replaceString);
055            }
056    
057            public static Matrix calc(Matrix source, Pattern search, String replacement)
058                            throws MatrixException {
059                    Matrix ret = MatrixFactory.zeros(ValueType.STRING, source.getSize());
060                    for (long[] c : source.availableCoordinates()) {
061                            String src = source.getAsString(c);
062                            ret.setAsString((src == null) ? null : search.matcher(src).replaceAll(replacement), c);
063                    }
064                    return ret;
065            }
066    
067            public static Matrix calc(Matrix source, String searchString, String replacement)
068                            throws MatrixException {
069                    return calc(source, Pattern.compile(searchString), replacement);
070            }
071    
072    }