/*
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*
* Copyright 1997-2008 Sun Microsystems, Inc. All rights reserved.
*
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* 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
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package com.sun.mail.dsn;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.OutputStreamWriter;
import java.io.UnsupportedEncodingException;
import javax.activation.ActivationDataFlavor;
import javax.activation.DataContentHandler;
import javax.activation.DataSource;
import javax.mail.MessagingException;
import javax.mail.internet.ContentType;
import javax.mail.internet.MimeUtility;
import at.dasz.KolabDroid.glue.DataFlavor;
/**
* DataContentHandler for text/rfc822-headers MIME type.
* Applications should not use this class directly, it's used indirectly
* through the JavaBeans Activation Framework.
*
* @since JavaMail 1.4
*
*/
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;
}
}
}