jurt/com/sun/star/lib/uno/bridges/java_remote/XConnectionInputStream_Adapter.java

   1 /*
   2  * This file is part of the LibreOffice project.
   3  *
   4  * This Source Code Form is subject to the terms of the Mozilla Public
   5  * License, v. 2.0. If a copy of the MPL was not distributed with this
   6  * file, You can obtain one at http://mozilla.org/MPL/2.0/.
   7  *
   8  * This file incorporates work covered by the following license notice:
   9  *
  10  *   Licensed to the Apache Software Foundation (ASF) under one or more
  11  *   contributor license agreements. See the NOTICE file distributed
  12  *   with this work for additional information regarding copyright
  13  *   ownership. The ASF licenses this file to you under the Apache
  14  *   License, Version 2.0 (the "License"); you may not use this file
  15  *   except in compliance with the License. You may obtain a copy of
  16  *   the License at http://www.apache.org/licenses/LICENSE-2.0 .
  17  */
  18
  19 package com.sun.star.lib.uno.bridges.java_remote;
  20
  21
  22 import java.io.IOException;
  23 import java.io.InputStream;
  24
  25 import com.sun.star.connection.XConnection;
  26
  27
  28 class XConnectionInputStream_Adapter extends InputStream {
  29     static private final boolean DEBUG = false;
  30
  31     protected XConnection _xConnection;
  32     protected byte        _bytes[][] = new byte[1][];
  33
  34     XConnectionInputStream_Adapter(XConnection xConnection) {
  35         if(xConnection == null) throw new NullPointerException("the XConnection must not be null");
  36
  37         if(DEBUG) System.err.println("#### " + getClass().getName()  + " - instantiated ");
  38
  39         _xConnection = xConnection;
  40     }
  41
  42     @Override
  43     public int read() throws IOException {
  44         int len;
  45
  46         try {
  47             len = _xConnection.read(_bytes, 1);
  48         } catch(com.sun.star.io.IOException ioException) {
  49             IOException ex = new IOException(ioException.getMessage());
  50             ex.initCause(ioException);
  51             throw ex;
  52         }
  53
  54         if(DEBUG) System.err.println("#### " + getClass().getName()  + " - one byte read:" +  _bytes[0][0]);
  55
  56         return len == 0 ? -1 : _bytes[0][0] & 0xff;
  57     }
  58
  59     @Override
  60     public int read(byte[] b, int off, int len) throws IOException {
  61         try {
  62             len = _xConnection.read(_bytes, len - off);
  63         } catch(com.sun.star.io.IOException ioException) {
  64             IOException ex = new IOException(ioException.getMessage());
  65             ex.initCause(ioException);
  66             throw ex;
  67         }
  68
  69         System.arraycopy(_bytes[0], 0, b, off, len);
  70
  71         return len == 0 ? -1 : len;
  72     }
  73 }
  74