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

 /*

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  * 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.org.jvnet.staxex;

 import javax.activation.DataHandler;

 import javax.activation.DataSource;

 import java.io.ByteArrayInputStream;

 import java.io.ByteArrayOutputStream;

 import java.io.File;

 import java.io.FileOutputStream;

 import java.io.IOException;

 import java.io.InputStream;

 import java.io.OutputStream;

 import javax.xml.stream.XMLStreamException;

 import javax.xml.stream.XMLStreamWriter;

 // for testing method

 //import com.sun.xml.internal.stream.writers.XMLStreamWriterImpl;

 //import java.io.FileNotFoundException;

 //import java.io.StringWriter;

 //import javax.activation.FileDataSource;

 /**

  * Binary data represented as base64-encoded string

  * in XML.

  *

  * <p>

  * Used in conjunction with {@link XMLStreamReaderEx}

  * and {@link XMLStreamWriterEx}.

  *

  * @author Kohsuke Kawaguchi, Martin Grebac

  */

 public class Base64Data implements CharSequence, Cloneable {

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

     // (note that having both is allowed)

     private DataHandler dataHandler;

     private byte[] data;

     /**

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

      */

     private int dataLen;

     /**

      * True if {@link #data} can be cloned by reference

      * if Base64Data instance is cloned.

      */

     private boolean dataCloneByRef;

     /**

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

      *

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

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

      */

     private String mimeType;

     /**

      * Default constructor

      */

     public Base64Data() {

     }

     /**

      * Clone constructor

      * @param that needs to be cloned

      */

     public Base64Data(Base64Data that) {

         that.get();

         if (that.dataCloneByRef) {

             this.data = that.data;

         } else {

             this.data = new byte[that.dataLen];

             System.arraycopy(that.data, 0, this.data, 0, that.dataLen);

         }

         this.dataCloneByRef = true;

         this.dataLen = that.dataLen;

         this.dataHandler = null;

         this.mimeType = that.mimeType;

     }

     /**

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

      *

      * @param data actual data

      * @param len

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

      * @param mimeType MIME type

      * @param cloneByRef

      *      true if data[] can be cloned by reference

      */

     public void set(byte[] data, int len, String mimeType, boolean cloneByRef) {

         this.data = data;

         this.dataLen = len;

         this.dataCloneByRef = cloneByRef;

         this.dataHandler = null;

         this.mimeType = mimeType;

     }

     /**

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

      *

      * @param data actual data bytes

      * @param len

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

      * @param mimeType MIME type

      */

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

         set(data,len,mimeType,false);

     }

     /**

      * 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.

      * @param mimeType MIME type

      */

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

         set(data,data.length,mimeType,false);

     }

     /**

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

      *

      * @param data DataHandler for the data

      */

     public void set(DataHandler data) {

         assert data!=null;

         this.dataHandler = data;

         this.data = null;

     }

     /**

      * Gets the raw data. If the returned DataHandler is {@link StreamingDataHandler},

      * callees may need to downcast to take advantage of its capabilities.

      *

      * @see StreamingDataHandler

      * @return DataHandler for the data

      */

     public DataHandler getDataHandler() {

         if(dataHandler==null){

             dataHandler = new Base64StreamingDataHandler(new Base64DataSource());

         } else if (!(dataHandler instanceof StreamingDataHandler)) {

             dataHandler = new FilterDataHandler(dataHandler);

         }

         return dataHandler;

     }

     private final class Base64DataSource implements 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();

         }

     }

     private final class Base64StreamingDataHandler extends StreamingDataHandler {

         Base64StreamingDataHandler(DataSource source) {

             super(source);

         }

         public InputStream readOnce() throws IOException {

             return getDataSource().getInputStream();

         }

         public void moveTo(File dst) throws IOException {

             FileOutputStream fout = new FileOutputStream(dst);

             try {

                 fout.write(data, 0, dataLen);

             } finally {

                 fout.close();

             }

         }

         public void close() throws IOException {

             // nothing to do

         }

     }

     private static final class FilterDataHandler extends StreamingDataHandler {

         FilterDataHandler(DataHandler dh) {

             super(dh.getDataSource());

         }

         public InputStream readOnce() throws IOException {

             return getDataSource().getInputStream();

         }

         public void moveTo(File dst) throws IOException {

             byte[] buf = new byte[8192];

             InputStream in = null;

             OutputStream out = null;

             try {

                 in = getDataSource().getInputStream();

                 out = new FileOutputStream(dst);

                 while (true) {

                     int amountRead = in.read(buf);

                     if (amountRead == -1) {

                         break;

                     }

                     out.write(buf, 0, amountRead);

                 }

             } finally {

                 if (in != null) {

                     try {

                         in.close();

                     } catch(IOException ioe) {

                         // nothing to do

                     }

                 }

                 if (out != null) {

                     try {

                         out.close();

                     } catch(IOException ioe) {

                         // nothing to do

                     }

                 }

             }

         }

         public void close() throws IOException {

             // nothing to do

         }

     }

     /**

      * Gets the byte[] of the exact length.

      *

      * @return byte[] for data

      */

     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}.

      *

      * @return data as InputStream

      * @throws IOException if i/o error occurs

      */

     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.

      *

      * @return false if it has only DataHandler

      */

     public boolean hasData() {

         return data!=null;

     }

     /**

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

      *

      * @return data as byte[], the array may be larger

      */

     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();

                 dataCloneByRef = true;

             } catch (IOException e) {

                 // TODO: report the error to the unmarshaller

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

             }

         }

         return data;

     }

     /**

      * Gets the length of the binary data counted in bytes.

      *

      * Note that if this object encapsulates {@link DataHandler},

      * this method would have to read the whole thing into {@code byte[]}

      * just to count the length, because {@link DataHandler}

      * doesn't easily expose the length.

      *

      * @return no of bytes

      */

     public int getDataLen() {

         get();

         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 Base64Encoder.encode(data[base]>>2);

         case 1:

             if(base+1<dataLen)

                 b1 = data[base+1];

             else

                 b1 = 0;

             return Base64Encoder.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 Base64Encoder.encode(

                             ((b1&0xF)<<2)|

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

             } else

                 return '=';

         case 3:

             if(base+2<dataLen)

                 return Base64Encoder.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.

      */

     @Override

     public String toString() {

         get();  // fill in the buffer

         return Base64Encoder.print(data, 0, dataLen);

     }

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

         get();

         Base64Encoder.print(data, 0, dataLen, buf, start);

     }

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

         if (data==null) {

             try {

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

                 ByteArrayOutputStream outStream = new ByteArrayOutputStream(); // dev-null stream

                 Base64EncoderStream encWriter = new Base64EncoderStream(output, outStream);

                 int b = -1;

                 while ((b = is.read()) != -1) {

                     encWriter.write(b);

                 }

                 outStream.close();

                 encWriter.close();

             } catch (IOException e) {

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

                 throw e;

             }

         } else {

             // the data is already in memory and not streamed

             String s = Base64Encoder.print(data, 0, dataLen);

             output.writeCharacters(s);

         }

     }

     @Override

     public Base64Data clone() {

         return new Base64Data(this);

     }

 //    public static void main(String[] args) throws FileNotFoundException, IOException, XMLStreamException {

 //        Base64Data data = new Base64Data();

 //

 //        data.set(new DataHandler(new FileDataSource(new File("/home/snajper/Desktop/a.txt"))));

 //

 //        StringWriter sw = new StringWriter();

 //        XMLStreamWriterImpl wi = new XMLStreamWriterImpl(sw, null);

 //

 //        data.writeTo(wi);

 //        wi.flush();sw.flush();

 //        System.out.println("SW: " + sw.toString());

 //

 //    }

 }