org.angnysa.yaba.text.format.JodaLocalDateFormat.java Source code

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Here is the source code for org.angnysa.yaba.text.format.JodaLocalDateFormat.java

Source

package org.angnysa.yaba.text.format;

/*
 * #%L
 * Yet Another Budget Application
 * %%
 * Copyright (C) 2012 angnysa
 * %%
 * This program 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 3 of the 
 * License, or (at your option) any later version.
 * 
 * This program 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 this program.  If not, see
 * <http://www.gnu.org/licenses/gpl-3.0.html>.
 * #L%
 */

import java.text.FieldPosition;
import java.text.Format;
import java.text.ParsePosition;

import org.joda.time.LocalDate;
import org.joda.time.format.DateTimeFormatter;
import org.joda.time.format.ISODateTimeFormat;

public class JodaLocalDateFormat extends Format {
    private static final long serialVersionUID = 1L;

    protected DateTimeFormatter formatter;

    public JodaLocalDateFormat() {
        this(ISODateTimeFormat.date());
    }

    public JodaLocalDateFormat(DateTimeFormatter formatter) {
        super();
        this.formatter = formatter;
    }

    @Override
    public StringBuffer format(Object obj, StringBuffer toAppendTo, FieldPosition pos) {

        if (obj instanceof LocalDate) {
            toAppendTo.append(formatter.print((LocalDate) obj));
        } else if (obj != null) {
            throw new IllegalArgumentException("obj");
        }

        return toAppendTo;
    }

    @Override
    public Object parseObject(String source, ParsePosition pos) {

        if (pos == null) {
            throw new NullPointerException("pos");
        }

        try {
            if (source == null || source.length() == 0) {
                return null;
            } else {
                LocalDate parsed = formatter.parseLocalDate(source);
                pos.setIndex(source.length());
                return parsed;
            }
        } catch (IllegalArgumentException e) {
            pos.setErrorIndex(0);
            return null;
        }
    }
}