Mercurial > jdk8-mips64-public > jaxws / file revision

 /*

  * Copyright (c) 1997, 2011, Oracle and/or its affiliates. All rights reserved.

  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

  *

  * This code is free software; you can redistribute it and/or modify it

  * under the terms of the GNU General Public License version 2 only, as

  * published by the Free Software Foundation.  Oracle designates this

  * particular file as subject to the "Classpath" exception as provided

  * by Oracle in the LICENSE file that accompanied this code.

  *

  * This code is distributed in the hope that it will be useful, but WITHOUT

  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

  * version 2 for more details (a copy is included in the LICENSE file that

  * accompanied this code).

  *

  * You should have received a copy of the GNU General Public License version

  * 2 along with this work; if not, write to the Free Software Foundation,

  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

  *

  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 package com.sun.xml.internal.bind.v2.runtime.unmarshaller;

 import java.io.ByteArrayInputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.OutputStream;

 import javax.activation.DataHandler;

 import javax.activation.DataSource;

 import javax.xml.stream.XMLStreamException;

 import javax.xml.stream.XMLStreamWriter;

 import com.sun.xml.internal.bind.DatatypeConverterImpl;

 import com.sun.xml.internal.bind.v2.runtime.XMLSerializer;

 import com.sun.xml.internal.bind.v2.runtime.output.Pcdata;

 import com.sun.xml.internal.bind.v2.runtime.output.UTF8XmlOutput;

 import com.sun.xml.internal.bind.v2.util.ByteArrayOutputStreamEx;

 import com.sun.istack.internal.Nullable;

 /**

  * Fed to unmarshaller when the 'text' data is actually

  * a virtual image of base64 encoding of the binary data

  * transferred on the wire.

  *

  * Used for the MTOM support.

  *

  * This object is mutable and the owner of this object can

  * reuse it with new data.

  *

  * Also used by the marshaller to write out the binary data

  * that could be possibly attached.

  *

  * @see XmlVisitor#text(CharSequence)

  * @see XMLSerializer#text(Pcdata,String)

  *

  * @author Kohsuke Kawaguchi, Martin Grebac

  */

 public final class Base64Data extends Pcdata {

     // either dataHandler or (data,dataLen,mimeType?) must be present

     private DataHandler dataHandler;

     private byte[] data;

     /**

      * Length of the valid data in {@link #data}.

      */

     private int dataLen;

     /**

      * Optional MIME type of {@link #data}.

      *

      * Unused when {@link #dataHandler} is set.

      * Use {@link DataHandler#getContentType()} in that case.

      */

     private @Nullable

     String mimeType;

     /**

      * Fills in the data object by a portion of the byte[].

      *

      * @param len

      *      data[0] to data[len-1] are treated as the data.

      */

     public void set(byte[] data, int len, @Nullable String mimeType) {

         this.data = data;

         this.dataLen = len;

         this.dataHandler = null;

         this.mimeType = mimeType;

     }

     /**

      * Fills in the data object by the byte[] of the exact length.

      *

      * @param data

      *      this buffer may be owned directly by the unmarshaleld JAXB object.

      */

     public void set(byte[] data, @Nullable String mimeType) {

         set(data, data.length, mimeType);

     }

     /**

      * Fills in the data object by a {@link DataHandler}.

      */

     public void set(DataHandler data) {

         assert data != null;

         this.dataHandler = data;

         this.data = null;

     }

     /**

      * Gets the raw data.

      */

     public DataHandler getDataHandler() {

         if (dataHandler == null) {

             dataHandler = new DataHandler(new DataSource() {

                 public String getContentType() {

                     return getMimeType();

                 }

                 public InputStream getInputStream() {

                     return new ByteArrayInputStream(data, 0, dataLen);

                 }

                 public String getName() {

                     return null;

                 }

                 public OutputStream getOutputStream() {

                     throw new UnsupportedOperationException();

                 }

             });

         }

         return dataHandler;

     }

     /**

      * Gets the byte[] of the exact length.

      */

     public byte[] getExact() {

         get();

         if (dataLen != data.length) {

             byte[] buf = new byte[dataLen];

             System.arraycopy(data, 0, buf, 0, dataLen);

             data = buf;

         }

         return data;

     }

     /**

      * Gets the data as an {@link InputStream}.

      */

     public InputStream getInputStream() throws IOException {

         if (dataHandler != null) {

             return dataHandler.getInputStream();

         } else {

             return new ByteArrayInputStream(data, 0, dataLen);

         }

     }

     /**

      * Returns false if this object only has {@link DataHandler} and therefore

      * {@link #get()} operation is likely going to be expensive.

      */

     public boolean hasData() {

         return data != null;

     }

     /**

      * Gets the raw data. The size of the byte array maybe larger than the actual length.

      */

     public byte[] get() {

         if (data == null) {

             try {

                 ByteArrayOutputStreamEx baos = new ByteArrayOutputStreamEx(1024);

                 InputStream is = dataHandler.getDataSource().getInputStream();

                 baos.readFrom(is);

                 is.close();

                 data = baos.getBuffer();

                 dataLen = baos.size();

             } catch (IOException e) {

                 // TODO: report the error to the unmarshaller

                 dataLen = 0;    // recover by assuming length-0 data

             }

         }

         return data;

     }

     public int getDataLen() {

         return dataLen;

     }

     public String getMimeType() {

         if (mimeType == null) {

             return "application/octet-stream";

         }

         return mimeType;

     }

     /**

      * Gets the number of characters needed to represent

      * this binary data in the base64 encoding.

      */

     public int length() {

         // for each 3 bytes you use 4 chars

         // if the remainder is 1 or 2 there will be 4 more

         get();  // fill in the buffer if necessary

         return ((dataLen + 2) / 3) * 4;

     }

     /**

      * Encode this binary data in the base64 encoding

      * and returns the character at the specified position.

      */

     public char charAt(int index) {

         // we assume that the length() method is called before this method

         // (otherwise how would the caller know that the index is valid?)

         // so we assume that the byte[] is already populated

         int offset = index % 4;

         int base = (index / 4) * 3;

         byte b1, b2;

         switch (offset) {

             case 0:

                 return DatatypeConverterImpl.encode(data[base] >> 2);

             case 1:

                 if (base + 1 < dataLen) {

                     b1 = data[base + 1];

                 } else {

                     b1 = 0;

                 }

                 return DatatypeConverterImpl.encode(

                         ((data[base] & 0x3) << 4)

                         | ((b1 >> 4) & 0xF));

             case 2:

                 if (base + 1 < dataLen) {

                     b1 = data[base + 1];

                     if (base + 2 < dataLen) {

                         b2 = data[base + 2];

                     } else {

                         b2 = 0;

                     }

                     return DatatypeConverterImpl.encode(

                             ((b1 & 0xF) << 2)

                             | ((b2 >> 6) & 0x3));

                 } else {

                     return '=';

                 }

             case 3:

                 if (base + 2 < dataLen) {

                     return DatatypeConverterImpl.encode(data[base + 2] & 0x3F);

                 } else {

                     return '=';

                 }

         }

         throw new IllegalStateException();

     }

     /**

      * Internally this is only used to split a text to a list,

      * which doesn't happen that much for base64.

      * So this method should be smaller than faster.

      */

     public CharSequence subSequence(int start, int end) {

         StringBuilder buf = new StringBuilder();

         get();  // fill in the buffer if we haven't done so

         for (int i = start; i < end; i++) {

             buf.append(charAt(i));

         }

         return buf;

     }

     /**

      * Returns the base64 encoded string of this data.

      */

     public String toString() {

         get();  // fill in the buffer

         return DatatypeConverterImpl._printBase64Binary(data, 0, dataLen);

     }

     @Override

     public void writeTo(char[] buf, int start) {

         get();

         DatatypeConverterImpl._printBase64Binary(data, 0, dataLen, buf, start);

     }

     public void writeTo(UTF8XmlOutput output) throws IOException {

         // TODO: this is inefficient if the data source is note byte[] but DataHandler

         get();

         output.text(data, dataLen);

     }

     public void writeTo(XMLStreamWriter output) throws IOException, XMLStreamException {

         get();

         DatatypeConverterImpl._printBase64Binary(data, 0, dataLen, output);

     }

 }