/*
* (c) Copyright 2010-2011 AgileBirds
*
* This file is part of OpenFlexo.
*
* OpenFlexo 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.
*
* OpenFlexo 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 OpenFlexo. If not, see <http://www.gnu.org/licenses/>.
*
*/
package org.openflexo.toolbox;
import java.text.ParsePosition;
import java.text.SimpleDateFormat;
import java.util.ArrayList;
import java.util.Date;
import java.util.List;
public class DateUtils {
private static final String[] ACCEPTABLEDATEFORMAT = { "d/M/y", "d/M/y H'h'm", "d/M/y H:m", "d-M-y", "d-M-y H'h'm", "d-M-y H:m",
"M/d/y", "M/d/y H'h'm", "M/d/y H:m", "M-d-y", "M-d-y H'h'm", "M-d-y H:m" };
/**
* Parse all specified String values and returns them as a date array. This method try to detect the date format to use and ensure the
* same will be used for all values. <br>
* If a common date format cannot be found, null is returned.
*
* @param values
* @return all specified String values as Date, null if they cannot be converted.
*/
public static Date[] parseDate(String[] values) {
SimpleDateFormat dateFormat = new SimpleDateFormat();
dateFormat.setLenient(false);
ParsePosition pos = new ParsePosition(0);
for (String pattern : ACCEPTABLEDATEFORMAT) {
dateFormat.applyPattern(pattern);
List<Date> results = new ArrayList<Date>();
for (String value : values) {
pos.setIndex(0);
Date date = dateFormat.parse(value.trim(), pos);
if (date == null || pos.getIndex() != value.length()) {
break;
}
results.add(date);
}
if (results.size() == values.length) {
return results.toArray(new Date[0]);
}
}
return null;
}
public static Date parseDate(String value) {
Date[] dates = parseDate(new String[] { value });
if (dates != null && dates.length > 0) {
return dates[0];
}
return null;
}
}