/* * 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. *//* * @(#)text_rfc822headers.java	1.4 07/05/04 */package com.sun.mail.dsn;import java.io.*;import java.awt.datatransfer.DataFlavor;import javax.activation.*;import javax.mail.*;import javax.mail.internet.*;/** * DataContentHandler for text/rfc822-headers. * * @version 1.4, 07/05/04 */public class text_rfc822headers implements DataContentHandler {    private static ActivationDataFlavor myDF = new ActivationDataFlavor(	MessageHeaders.class,	"text/rfc822-headers",	"RFC822 headers");    private static ActivationDataFlavor myDFs = new ActivationDataFlavor(	java.lang.String.class,	"text/rfc822-headers",	"RFC822 headers");    /**     * Return the DataFlavors for this <code>DataContentHandler</code>.     *     * @return The DataFlavors     */    public DataFlavor[] getTransferDataFlavors() {	return new DataFlavor[] { myDF, myDFs };    }    /**     * Return the Transfer Data of type DataFlavor from InputStream.     *     * @param df The DataFlavor     * @param ds The DataSource corresponding to the data     * @return String object     */    public Object getTransferData(DataFlavor df, DataSource ds) 			throws IOException {	// use myDF.equals to be sure to get ActivationDataFlavor.equals,	// which properly ignores Content-Type parameters in comparison	if (myDF.equals(df))	    return getContent(ds);	else if (myDFs.equals(df))	    return getStringContent(ds);	else	    return null;    }    public Object getContent(DataSource ds) throws IOException {	try {	    return new MessageHeaders(ds.getInputStream());	} catch (MessagingException mex) {//System.out.println("Exception creating MessageHeaders: " + mex);	    throw new IOException("Exception creating MessageHeaders: " + mex);	}    }    private Object getStringContent(DataSource ds) throws IOException {	String enc = null;	InputStreamReader is = null;		try {	    enc = getCharset(ds.getContentType());	    is = new InputStreamReader(ds.getInputStream(), enc);	} catch (IllegalArgumentException iex) {	    /*	     * An unknown charset of the form ISO-XXX-XXX will cause	     * the JDK to throw an IllegalArgumentException.  The	     * JDK will attempt to create a classname using this string,	     * but valid classnames must not contain the character '-',	     * and this results in an IllegalArgumentException, rather than	     * the expected UnsupportedEncodingException.  Yikes.	     */	    throw new UnsupportedEncodingException(enc);	}	int pos = 0;	int count;	char buf[] = new char[1024];	while ((count = is.read(buf, pos, buf.length - pos)) != -1) {	    pos += count;	    if (pos >= buf.length) {		int size = buf.length;		if (size < 256*1024)		    size += size;		else		    size += 256*1024;		char tbuf[] = new char[size];		System.arraycopy(buf, 0, tbuf, 0, pos);		buf = tbuf;	    }	}	return new String(buf, 0, pos);    }        /**     * Write the object to the output stream, using the specified MIME type.     */    public void writeTo(Object obj, String type, OutputStream os) 			throws IOException {	if (obj instanceof MessageHeaders) {	    MessageHeaders mh = (MessageHeaders)obj;	    try {		mh.writeTo(os);	    } catch (MessagingException mex) {		Exception ex = mex.getNextException();		if (ex instanceof IOException)		    throw (IOException)ex;		else		    throw new IOException("Exception writing headers: " + mex);	    }	    return;	}	if (!(obj instanceof String))	    throw new IOException("\"" + myDFs.getMimeType() +		"\" DataContentHandler requires String object, " +		"was given object of type " + obj.getClass().toString());	String enc = null;	OutputStreamWriter osw = null;	try {	    enc = getCharset(type);	    osw = new OutputStreamWriter(os, enc);	} catch (IllegalArgumentException iex) {	    /*	     * An unknown charset of the form ISO-XXX-XXX will cause	     * the JDK to throw an IllegalArgumentException.  The	     * JDK will attempt to create a classname using this string,	     * but valid classnames must not contain the character '-',	     * and this results in an IllegalArgumentException, rather than	     * the expected UnsupportedEncodingException.  Yikes.	     */	    throw new UnsupportedEncodingException(enc);	}	String s = (String)obj;	osw.write(s, 0, s.length());	osw.flush();    }    private String getCharset(String type) {	try {	    ContentType ct = new ContentType(type);	    String charset = ct.getParameter("charset");	    if (charset == null)		// If the charset parameter is absent, use US-ASCII.		charset = "us-ascii";	    return MimeUtility.javaCharset(charset);	} catch (Exception ex) {	    return null;	}    }}