ohair@286: /*
alanb@368:  * Copyright (c) 1997, 2012, Oracle and/or its affiliates. All rights reserved.
ohair@286:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
ohair@286:  *
ohair@286:  * This code is free software; you can redistribute it and/or modify it
ohair@286:  * under the terms of the GNU General Public License version 2 only, as
ohair@286:  * published by the Free Software Foundation.  Oracle designates this
ohair@286:  * particular file as subject to the "Classpath" exception as provided
ohair@286:  * by Oracle in the LICENSE file that accompanied this code.
ohair@286:  *
ohair@286:  * This code is distributed in the hope that it will be useful, but WITHOUT
ohair@286:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
ohair@286:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
ohair@286:  * version 2 for more details (a copy is included in the LICENSE file that
ohair@286:  * accompanied this code).
ohair@286:  *
ohair@286:  * You should have received a copy of the GNU General Public License version
ohair@286:  * 2 along with this work; if not, write to the Free Software Foundation,
ohair@286:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
ohair@286:  *
ohair@286:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
ohair@286:  * or visit www.oracle.com if you need additional information or have any
ohair@286:  * questions.
ohair@286:  */
ohair@286: 
ohair@286: package com.sun.xml.internal.messaging.saaj.soap;
ohair@286: 
ohair@286: import java.awt.datatransfer.DataFlavor;
ohair@286: import java.io.*;
ohair@286: 
ohair@286: import javax.activation.*;
ohair@286: import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.MimeUtility;
ohair@286: import com.sun.xml.internal.messaging.saaj.packaging.mime.util.ASCIIUtility;
ohair@286: import com.sun.xml.internal.messaging.saaj.packaging.mime.internet.ContentType;
ohair@286: 
ohair@286: /**
ohair@286:  * JAF data content handler for text/plain --> String
ohair@286:  *
ohair@286:  */
ohair@286: public class StringDataContentHandler implements DataContentHandler {
ohair@286:     private static ActivationDataFlavor myDF = new ActivationDataFlavor(
ohair@286:         java.lang.String.class,
ohair@286:         "text/plain",
ohair@286:         "Text String");
ohair@286: 
ohair@286:     protected ActivationDataFlavor getDF() {
ohair@286:         return myDF;
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Return the DataFlavors for this <code>DataContentHandler</code>.
ohair@286:      *
ohair@286:      * @return The DataFlavors
ohair@286:      */
ohair@286:     public DataFlavor[] getTransferDataFlavors() {
ohair@286:         return new DataFlavor[] { getDF() };
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Return the Transfer Data of type DataFlavor from InputStream.
ohair@286:      *
ohair@286:      * @param df The DataFlavor
ohair@286:      * @param ds The DataSource corresponding to the data
ohair@286:      * @return String object
ohair@286:      */
ohair@286:     public Object getTransferData(DataFlavor df, DataSource ds)
ohair@286:                         throws IOException {
ohair@286:         // use myDF.equals to be sure to get ActivationDataFlavor.equals,
ohair@286:         // which properly ignores Content-Type parameters in comparison
ohair@286:         if (getDF().equals(df))
ohair@286:             return getContent(ds);
ohair@286:         else
ohair@286:             return null;
ohair@286:     }
ohair@286: 
ohair@286:     public Object getContent(DataSource ds) throws IOException {
ohair@286:         String enc = null;
ohair@286:         InputStreamReader is = null;
ohair@286: 
ohair@286:         try {
ohair@286:             enc = getCharset(ds.getContentType());
ohair@286:             is = new InputStreamReader(ds.getInputStream(), enc);
ohair@286:         } catch (IllegalArgumentException iex) {
ohair@286:             /*
ohair@286:              * An unknown charset of the form ISO-XXX-XXX will cause
ohair@286:              * the JDK to throw an IllegalArgumentException.  The
ohair@286:              * JDK will attempt to create a classname using this string,
ohair@286:              * but valid classnames must not contain the character '-',
ohair@286:              * and this results in an IllegalArgumentException, rather than
ohair@286:              * the expected UnsupportedEncodingException.  Yikes.
ohair@286:              */
ohair@286:             throw new UnsupportedEncodingException(enc);
ohair@286:         }
ohair@286: 
ohair@286:         try {
ohair@286:             int pos = 0;
ohair@286:             int count;
ohair@286:             char buf[] = new char[1024];
ohair@286: 
ohair@286:             while ((count = is.read(buf, pos, buf.length - pos)) != -1) {
ohair@286:                 pos += count;
ohair@286:                 if (pos >= buf.length) {
ohair@286:                     int size = buf.length;
ohair@286:                     if (size < 256*1024)
ohair@286:                         size += size;
ohair@286:                     else
ohair@286:                         size += 256*1024;
ohair@286:                     char tbuf[] = new char[size];
ohair@286:                     System.arraycopy(buf, 0, tbuf, 0, pos);
ohair@286:                     buf = tbuf;
ohair@286:                 }
ohair@286:             }
ohair@286:             return new String(buf, 0, pos);
ohair@286:         } finally {
ohair@286:             try {
ohair@286:                 is.close();
ohair@286:             } catch (IOException ex) { }
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286:     /**
ohair@286:      * Write the object to the output stream, using the specified MIME type.
ohair@286:      */
ohair@286:     public void writeTo(Object obj, String type, OutputStream os)
ohair@286:                         throws IOException {
ohair@286:         if (!(obj instanceof String))
ohair@286:             throw new IOException("\"" + getDF().getMimeType() +
ohair@286:                 "\" DataContentHandler requires String object, " +
ohair@286:                 "was given object of type " + obj.getClass().toString());
ohair@286: 
ohair@286:         String enc = null;
ohair@286:         OutputStreamWriter osw = null;
ohair@286: 
ohair@286:         try {
ohair@286:             enc = getCharset(type);
ohair@286:             osw = new OutputStreamWriter(os, enc);
ohair@286:         } catch (IllegalArgumentException iex) {
ohair@286:             /*
ohair@286:              * An unknown charset of the form ISO-XXX-XXX will cause
ohair@286:              * the JDK to throw an IllegalArgumentException.  The
ohair@286:              * JDK will attempt to create a classname using this string,
ohair@286:              * but valid classnames must not contain the character '-',
ohair@286:              * and this results in an IllegalArgumentException, rather than
ohair@286:              * the expected UnsupportedEncodingException.  Yikes.
ohair@286:              */
ohair@286:             throw new UnsupportedEncodingException(enc);
ohair@286:         }
ohair@286: 
ohair@286:         String s = (String)obj;
ohair@286:         osw.write(s, 0, s.length());
ohair@286:         osw.flush();
ohair@286:     }
ohair@286: 
ohair@286:     private String getCharset(String type) {
ohair@286:         try {
ohair@286:             ContentType ct = new ContentType(type);
ohair@286:             String charset = ct.getParameter("charset");
ohair@286:             if (charset == null)
ohair@286:                 // If the charset parameter is absent, use US-ASCII.
ohair@286:                 charset = "us-ascii";
ohair@286:             return MimeUtility.javaCharset(charset);
ohair@286:         } catch (Exception ex) {
ohair@286:             return null;
ohair@286:         }
ohair@286:     }
ohair@286: 
ohair@286: }