1 /*
   2  * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package com.sun.istack.internal;
  27 
  28 import javax.activation.DataSource;
  29 import java.io.InputStream;
  30 import java.io.ByteArrayInputStream;
  31 import java.io.OutputStream;
  32 
  33 /**
  34  * {@link DataSource} backed by a byte buffer.
  35  *
  36  * @author Kohsuke Kawaguchi
  37  */
  38 public final class ByteArrayDataSource implements DataSource {
  39 
  40     private final String contentType;
  41     private final byte[] buf;
  42     private final int len;
  43 
  44     /**
  45      * @param buf input buffer - the byte array isn't being copied; used directly
  46      * @param contentType
  47      */
  48     public ByteArrayDataSource(byte[] buf, String contentType) {
  49         this(buf,buf.length,contentType);
  50     }
  51 
  52     /**
  53      * @param buf input buffer - the byte array isn't being copied; used directly
  54      * @param length
  55      * @param contentType
  56      */
  57     public ByteArrayDataSource(byte[] buf, int length, String contentType) {
  58         this.buf = buf;
  59         this.len = length;
  60         this.contentType = contentType;
  61     }
  62 
  63     public String getContentType() {
  64         if(contentType==null)
  65             return "application/octet-stream";
  66         return contentType;
  67     }
  68 
  69     public InputStream getInputStream() {
  70         return new ByteArrayInputStream(buf,0,len);
  71     }
  72 
  73     public String getName() {
  74         return null;
  75     }
  76 
  77     public OutputStream getOutputStream() {
  78         throw new UnsupportedOperationException();
  79     }
  80 }