com.rtfparserkit.parser.raw.ByteBuffer Maven / Gradle / Ivy

Go to download

Show more of this group Show more artifacts with this name
Show all versions of mpxj Show documentation

Library that provides facilities to allow project information to be manipulated in Java and .Net. Supports a range of data formats: Microsoft Project Exchange (MPX), Microsoft Project (MPP,MPT), Microsoft Project Data Interchange (MSPDI XML), Microsoft Project Database (MPD), Planner (XML), Primavera (PM XML, XER, and database), Asta Powerproject (PP, MDB), Asta Easyplan (PP), Phoenix Project Manager (PPX), FastTrack Schedule (FTS), and the Standard Data Exchange Format (SDEF).

There is a newer version: 13.8.0

Show newest version

/*
 * Copyright 2013 Jon Iles
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.rtfparserkit.parser.raw;

/**
 * Implements a simple byte array based buffer. Used to collect
 * data one byte at a time into a buffer, then pass the
 * collected data to the caller as an array.
 */
class ByteBuffer
{
   /**
    * Add a byte to the buffer.
    */
   public void add(int b)
   {
      if (bufferSize == buffer.length)
      {
         byte[] newBuffer = new byte[buffer.length + (buffer.length >> 1)];
         System.arraycopy(buffer, 0, newBuffer, 0, bufferSize);
         buffer = newBuffer;
      }

      buffer[bufferSize++] = (byte) b;
   }

   /**
    * Clear the buffer.
    */
   public void clear()
   {
      bufferSize = 0;
   }

   /**
    * Return the buffer as an array.
    */
   public byte[] toArray()
   {
      byte[] result = new byte[bufferSize];
      System.arraycopy(buffer, 0, result, 0, bufferSize);
      return result;
   }

   /**
    * Determines if the buffer is empty.
    */
   public boolean isEmpty()
   {
      return bufferSize == 0;
   }

   @Override
   public String toString()
   {
      return "[ByteBuffer bufferSize=" + bufferSize + " buffer=" + new String(buffer, 0, bufferSize) + "]";
   }

   private static final int INITIAL_BUFFER_CAPACITY = 10240;
   private int bufferSize;
   private byte[] buffer = new byte[INITIAL_BUFFER_CAPACITY];
}