gomp-20050608-branch/libjava/classpath/gnu/java/net/protocol/http/ByteArrayRequestBodyWriter.java

   1 /* ByteArrayRequestBodyWriter.java --
   2    Copyright (C) 2004 Free Software Foundation, Inc.
   3
   4 This file is part of GNU Classpath.
   5
   6 GNU Classpath is free software; you can redistribute it and/or modify
   7 it under the terms of the GNU General Public License as published by
   8 the Free Software Foundation; either version 2, or (at your option)
   9 any later version.
  10
  11 GNU Classpath is distributed in the hope that it will be useful, but
  12 WITHOUT ANY WARRANTY; without even the implied warranty of
  13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 General Public License for more details.
  15
  16 You should have received a copy of the GNU General Public License
  17 along with GNU Classpath; see the file COPYING.  If not, write to the
  18 Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
  19 02110-1301 USA.
  20
  21 Linking this library statically or dynamically with other modules is
  22 making a combined work based on this library.  Thus, the terms and
  23 conditions of the GNU General Public License cover the whole
  24 combination.
  25
  26 As a special exception, the copyright holders of this library give you
  27 permission to link this library with independent modules to produce an
  28 executable, regardless of the license terms of these independent
  29 modules, and to copy and distribute the resulting executable under
  30 terms of your choice, provided that you also meet, for each linked
  31 independent module, the terms and conditions of the license of that
  32 module.  An independent module is a module which is not derived from
  33 or based on this library.  If you modify this library, you may extend
  34 this exception to your version of the library, but you are not
  35 obligated to do so.  If you do not wish to do so, delete this
  36 exception statement from your version. */
  37
  38
  39 package gnu.java.net.protocol.http;
  40
  41 /**
  42  * A simple request body writer using a byte array.
  43  *
  44  * @author Chris Burdess (dog@gnu.org)
  45  */
  46 public class ByteArrayRequestBodyWriter
  47   implements RequestBodyWriter
  48 {
  49
  50   /**
  51    * The content.
  52    */
  53   protected byte[] content;
  54
  55   /**
  56    * The position within the content at which the next read will occur.
  57    */
  58   protected int pos;
  59
  60   /**
  61    * Constructs a new byte array request body writer with the specified
  62    * content.
  63    * @param content the content buffer
  64    */
  65   public ByteArrayRequestBodyWriter(byte[] content)
  66   {
  67     this.content = content;
  68     pos = 0;
  69   }
  70
  71   /**
  72    * Returns the total number of bytes that will be written in a single pass
  73    * by this writer.
  74    */
  75   public int getContentLength()
  76   {
  77     return content.length;
  78   }
  79
  80   /**
  81    * Initialises the writer.
  82    * This will be called before each pass.
  83    */
  84   public void reset()
  85   {
  86     pos = 0;
  87   }
  88
  89   /**
  90    * Writes body content to the supplied buffer.
  91    * @param buffer the content buffer
  92    * @return the number of bytes written
  93    */
  94   public int write(byte[] buffer)
  95   {
  96     int len = content.length - pos;
  97     len = (buffer.length < len) ? buffer.length : len;
  98     if (len > -1)
  99       {
 100         System.arraycopy(content, pos, buffer, 0, len);
 101         pos += len;
 102       }
 103     return len;
 104   }
 105
 106 }
 107