gcc/libjava/classpath/gnu/CORBA/CDR/BufferredCdrInput.java

/* BufferredCdrInput.java --
   Copyright (C) 2005 Free Software Foundation, Inc.

This file is part of GNU Classpath.

GNU Classpath is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2, or (at your option)
any later version.

GNU Classpath 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 for more details.

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along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.

Linking this library statically or dynamically with other modules is
making a combined work based on this library.  Thus, the terms and
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As a special exception, the copyright holders of this library give you
permission to link this library with independent modules to produce an
executable, regardless of the license terms of these independent
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this exception to your version of the library, but you are not
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exception statement from your version. */


package gnu.CORBA.CDR;


/**
 * The CDR input stream that reads data from the byte buffer.
 *
 * @author Audrius Meskauskas (AudriusA@Bioinformatics.org)
 */
public class BufferredCdrInput
  extends AbstractCdrInput 
  implements gnuValueStream
{
  /** 
   * Use serialVersionUID for interoperability. 
   */
  private static final long serialVersionUID = 1;
  
  /**
   * The byte array input stream to read data from.
   */
  public final AligningInput buffer;

  /**
   * Creates the CDR input stream that reads from the given buffer
   * array.
   *
   * @param a_buffer an array to read from.
   */
  public BufferredCdrInput(byte[] a_buffer)
  {
    buffer = new AligningInput(a_buffer);
    setInputStream(buffer);
  }

  /**
   * Set the alignment offset, if the index of the first byte in the
   * stream is different from 0.
   */
  public void setOffset(int offset)
  {
    buffer.setOffset(offset);
  }

  /**
   * Skip several bytes, aligning the internal pointer on the
   * selected boundary.
   */
  public void align(int alignment)
  {
    buffer.align(alignment);
  }

  /**
   * Mark the current position.
   * @param ahead
   */
  public synchronized void mark(int ahead)
  {
    buffer.mark(ahead);
  }

  /**
   * Checks if marking is supported.
   * @return
   */
  public boolean markSupported()
  {
    return buffer.markSupported();
  }

  /**
   * Resets the stream to the previously marked position.
   */
  public void reset()
  {
    buffer.reset();
    setInputStream(buffer);
  }
  
  /**
   * Get the current position in the buffer.
   * 
   * @return The position in the buffer, taking offset into consideration.
   */
  public int getPosition()
  {
    return buffer.getPosition();
  }
  
  /**
   * Jump to the given position, taking offset into consideration.
   */
  public void seek(int position)
  {
    buffer.seek(position);
    setInputStream(buffer);
  }
  
  /**
   * Get the associated RunTime.
   */
  public gnuRuntime getRunTime()
  {
    return runtime;
  }  
  
  /**
   * Replace the instance of RunTime.
   */
  public void setRunTime(gnuRuntime a_runtime)
  {
    runtime = a_runtime;
  }
  
}