Source for gnu.CORBA.CDR.BufferredCdrInput

   1: /* BufferredCdrInput.java --
   2:    Copyright (C) 2005 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.CORBA.CDR;
  40: 
  41: 
  42: /**
  43:  * The CDR input stream that reads data from the byte buffer.
  44:  *
  45:  * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
  46:  */
  47: public class BufferredCdrInput
  48:   extends AbstractCdrInput
  49:   implements gnuValueStream
  50: {
  51:   /**
  52:    * Use serialVersionUID for interoperability.
  53:    */
  54:   private static final long serialVersionUID = 1;
  55: 
  56:   /**
  57:    * The byte array input stream to read data from.
  58:    */
  59:   public final AligningInput buffer;
  60: 
  61:   /**
  62:    * Creates the CDR input stream that reads from the given buffer
  63:    * array.
  64:    *
  65:    * @param a_buffer an array to read from.
  66:    */
  67:   public BufferredCdrInput(byte[] a_buffer)
  68:   {
  69:     buffer = new AligningInput(a_buffer);
  70:     setInputStream(buffer);
  71:   }
  72: 
  73:   /**
  74:    * Set the alignment offset, if the index of the first byte in the
  75:    * stream is different from 0.
  76:    */
  77:   public void setOffset(int offset)
  78:   {
  79:     buffer.setOffset(offset);
  80:   }
  81: 
  82:   /**
  83:    * Skip several bytes, aligning the internal pointer on the
  84:    * selected boundary.
  85:    */
  86:   public void align(int alignment)
  87:   {
  88:     buffer.align(alignment);
  89:   }
  90: 
  91:   /**
  92:    * Mark the current position.
  93:    * @param ahead
  94:    */
  95:   public synchronized void mark(int ahead)
  96:   {
  97:     buffer.mark(ahead);
  98:   }
  99: 
 100:   /**
 101:    * Checks if marking is supported.
 102:    * @return
 103:    */
 104:   public boolean markSupported()
 105:   {
 106:     return buffer.markSupported();
 107:   }
 108: 
 109:   /**
 110:    * Resets the stream to the previously marked position.
 111:    */
 112:   public void reset()
 113:   {
 114:     buffer.reset();
 115:     setInputStream(buffer);
 116:   }
 117: 
 118:   /**
 119:    * Get the current position in the buffer.
 120:    *
 121:    * @return The position in the buffer, taking offset into consideration.
 122:    */
 123:   public int getPosition()
 124:   {
 125:     return buffer.getPosition();
 126:   }
 127: 
 128:   /**
 129:    * Jump to the given position, taking offset into consideration.
 130:    */
 131:   public void seek(int position)
 132:   {
 133:     buffer.seek(position);
 134:     setInputStream(buffer);
 135:   }
 136: 
 137:   /**
 138:    * Get the associated RunTime.
 139:    */
 140:   public gnuRuntime getRunTime()
 141:   {
 142:     return runtime;
 143:   }
 144: 
 145:   /**
 146:    * Replace the instance of RunTime.
 147:    */
 148:   public void setRunTime(gnuRuntime a_runtime)
 149:   {
 150:     runtime = a_runtime;
 151:   }
 152: 
 153: }