/* * 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. *//* * @(#)ContentDisposition.java	1.9 07/05/04 */package javax.mail.internet;import javax.mail.*;import java.util.*;import java.io.*;/** * This class represents a MIME ContentDisposition value. It provides * methods to parse a ContentDisposition string into individual components * and to generate a MIME style ContentDisposition string. * * @version 1.9, 07/05/04 * @author  John Mani */public class ContentDisposition {    private String disposition; // disposition    private ParameterList list;	// parameter list    /**     * No-arg Constructor.     */    public ContentDisposition() { }    /**     * Constructor.     *     * @param	disposition	disposition     * @param	list	ParameterList     * @since		JavaMail 1.2     */    public ContentDisposition(String disposition, ParameterList list) {	this.disposition = disposition;	this.list = list;    }    /**     * Constructor that takes a ContentDisposition string. The String     * is parsed into its constituents: dispostion and parameters.      * A ParseException is thrown if the parse fails.      *     * @param	s	the ContentDisposition string.     * @exception	ParseException if the parse fails.     * @since		JavaMail 1.2     */    public ContentDisposition(String s) throws ParseException {	HeaderTokenizer h = new HeaderTokenizer(s, HeaderTokenizer.MIME);	HeaderTokenizer.Token tk;	// First "disposition" ..	tk = h.next();	if (tk.getType() != HeaderTokenizer.Token.ATOM)	    throw new ParseException();	disposition = tk.getValue();	// Then parameters ..	String rem = h.getRemainder();	if (rem != null)	    list = new ParameterList(rem);    }    /**     * Return the disposition value.     * @return the disposition     * @since		JavaMail 1.2     */    public String getDisposition() {	return disposition;    }    /**     * Return the specified parameter value. Returns <code>null</code>     * if this parameter is absent.     * @return	parameter value     * @since		JavaMail 1.2     */    public String getParameter(String name) {	if (list == null)	    return null;	return list.get(name);    }    /**     * Return a ParameterList object that holds all the available      * parameters. Returns null if no parameters are available.     *     * @return	ParameterList     * @since		JavaMail 1.2     */    public ParameterList getParameterList() {	return list;    }    /**     * Set the disposition.  Replaces the existing disposition.     * @param	disposition	the disposition     * @since		JavaMail 1.2     */    public void setDisposition(String disposition) {	this.disposition = disposition;    }    /**     * Set the specified parameter. If this parameter already exists,     * it is replaced by this new value.     *     * @param	name	parameter name     * @param	value	parameter value     * @since		JavaMail 1.2     */    public void setParameter(String name, String value) {	if (list == null)	    list = new ParameterList();	list.set(name, value);    }    /**     * Set a new ParameterList.     * @param	list	ParameterList     * @since		JavaMail 1.2     */    public void setParameterList(ParameterList list) {	this.list = list;    }    /**     * Retrieve a RFC2045 style string representation of     * this ContentDisposition. Returns <code>null</code> if     * the conversion failed.     *     * @return	RFC2045 style string     * @since		JavaMail 1.2     */    public String toString() {	if (disposition == null)	    return null;	if (list == null)	    return disposition;	StringBuffer sb = new StringBuffer(disposition);        // append the parameter list          // use the length of the string buffer + the length of         // the header name formatted as follows "Content-Disposition: "	sb.append(list.toString(sb.length() + 21));	return sb.toString();    }}