/* * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER. * * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved. * * The contents of this file are subject to the terms of either the GNU * General Public License Version 2 only ("GPL") or the Common Development * and Distribution License("CDDL") (collectively, the "License").  You * may not use this file except in compliance with the License. You can obtain * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html * or glassfish/bootstrap/legal/LICENSE.txt.  See the License for the specific * language governing permissions and limitations under the License. * * When distributing the software, include this License Header Notice in each * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt. * Sun designates this particular file as subject to the "Classpath" exception * as provided by Sun in the GPL Version 2 section of the License file that * accompanied this code.  If applicable, add the following below the License * Header, with the fields enclosed by brackets [] replaced by your own * identifying information: "Portions Copyrighted [year] * [name of copyright owner]" * * Contributor(s): * * If you wish your version of this file to be governed by only the CDDL or * only the GPL Version 2, indicate your decision by adding "[Contributor] * elects to include this software in this distribution under the [CDDL or GPL * Version 2] license."  If you don't indicate a single choice of license, a * recipient has the option to distribute your version of this file under * either the CDDL, the GPL Version 2 or to extend the choice of license to * its licensees as provided above.  However, if you add GPL Version 2 code * and therefore, elected the GPL Version 2 license, then the option applies * only if the new code is made subject to such option by the copyright * holder. *//* * @(#)INTERNALDATE.java	1.17 07/05/04 */package com.sun.mail.imap.protocol;import java.util.Date;import java.util.TimeZone;import java.util.Locale;import java.text.ParseException;import java.text.SimpleDateFormat;import java.text.FieldPosition;import javax.mail.internet.MailDateFormat;import com.sun.mail.iap.*; /** * This class  * * @version 1.17, 07/05/04 * @author  John Mani */public class INTERNALDATE implements Item {    static final char[] name =	{'I','N','T','E','R','N','A','L','D','A','T','E'};    public int msgno;    protected Date date;    /*     * Used to parse dates only.  The parse method is thread safe     * so we only need to create a single object for use by all     * instances.  We depend on the fact that the MailDateFormat     * class will parse dates in INTERNALDATE format as well as     * dates in RFC 822 format.     */    private static MailDateFormat mailDateFormat = new MailDateFormat();    /**     * Constructor     */    public INTERNALDATE(FetchResponse r) throws ParsingException {	msgno = r.getNumber();	r.skipSpaces();	String s = r.readString();	if (s == null)	    throw new ParsingException("INTERNALDATE is NIL");	try {	    date = mailDateFormat.parse(s);	} catch (ParseException pex) {	    throw new ParsingException("INTERNALDATE parse error");	}    }    public Date getDate() {	return date;    }    // INTERNALDATE formatter    private static SimpleDateFormat df = 	// Need Locale.US, the "MMM" field can produce unexpected values	// in non US locales !	new SimpleDateFormat("dd-MMM-yyyy HH:mm:ss ", Locale.US);    /**     * Format given Date object into INTERNALDATE string     */    public static String format(Date d) {	/*	 * SimpleDateFormat objects aren't thread safe, so rather	 * than create a separate such object for each request,	 * we create one object and synchronize its use here	 * so that only one thread is using it at a time.  This	 * trades off some potential concurrency for speed in the	 * common case.	 *	 * This method is only used when formatting the date in a	 * message that's being appended to a folder.	 */	StringBuffer sb = new StringBuffer();	synchronized (df) {	    df.format(d, sb, new FieldPosition(0));	}	// compute timezone offset string	// XXX - Yes, I know this is deprecated	int rawOffsetInMins = -d.getTimezoneOffset();	/*	 * XXX - in JavaMail 1.4 / J2SE 1.4, possibly replace above with:	 *	TimeZone tz = TimeZone.getDefault();	int offset = tz.getOffset(d);	// get offset from GMT	int rawOffsetInMins = offset / 60 / 1000; // offset from GMT in mins	 */	if (rawOffsetInMins < 0) {	    sb.append('-');	    rawOffsetInMins = (-rawOffsetInMins);	} else	    sb.append('+');		int offsetInHrs = rawOffsetInMins / 60;	int offsetInMins = rawOffsetInMins % 60;	sb.append(Character.forDigit((offsetInHrs/10), 10));	sb.append(Character.forDigit((offsetInHrs%10), 10));	sb.append(Character.forDigit((offsetInMins/10), 10));	sb.append(Character.forDigit((offsetInMins%10), 10));	return sb.toString();    }}