/*
 * [The "BSD license"]
 *  Copyright (c) 2011 Terence Parr
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *     notice, this list of conditions and the following disclaimer.
 *  2. Redistributions in binary form must reproduce the above copyright
 *     notice, this list of conditions and the following disclaimer in the
 *     documentation and/or other materials provided with the distribution.
 *  3. The name of the author may not be used to endorse or promote products
 *     derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
 *  IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 *  OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
 *  IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
 *  INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 *  NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
 *  DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
 *  THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 *  (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
 *  THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 */
package org.stringtemplate.v4;

import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.*;

A renderer for Date and Calendar objects. It understands a variety of format names as shown in formatToInt field. By default it assumes "short" format. A prefix of "date:" or "time:" shows only those components of the time object.
/** * A renderer for {@link Date} and {@link Calendar} objects. It understands a * variety of format names as shown in {@link #formatToInt} field. By default it * assumes {@code "short"} format. A prefix of {@code "date:"} or * {@code "time:"} shows only those components of the time object. */
public class DateRenderer implements AttributeRenderer { public static final Map<String,Integer> formatToInt = new HashMap<String,Integer>() { { put("short", DateFormat.SHORT); put("medium", DateFormat.MEDIUM); put("long", DateFormat.LONG); put("full", DateFormat.FULL); put("date:short", DateFormat.SHORT); put("date:medium", DateFormat.MEDIUM); put("date:long", DateFormat.LONG); put("date:full", DateFormat.FULL); put("time:short", DateFormat.SHORT); put("time:medium", DateFormat.MEDIUM); put("time:long", DateFormat.LONG); put("time:full", DateFormat.FULL); } }; @Override public String toString(Object o, String formatString, Locale locale) { Date d; if ( formatString==null ) formatString = "short"; if ( o instanceof Calendar ) d = ((Calendar)o).getTime(); else d = (Date)o; Integer styleI = formatToInt.get(formatString); DateFormat f; if ( styleI==null ) f = new SimpleDateFormat(formatString, locale); else { int style = styleI.intValue(); if ( formatString.startsWith("date:") ) f = DateFormat.getDateInstance(style, locale); else if ( formatString.startsWith("time:") ) f = DateFormat.getTimeInstance(style, locale); else f = DateFormat.getDateTimeInstance(style, style, locale); } return f.format(d); } }