ByteBuffer.java

// Copyright 2001, FreeHEP.
package org.freehep.postscript;

/**
 * Byte Buffer for PostScript Scanner
 *
 * @author Mark Donszelmann
 * @version $Id: ByteBuffer.java 8958 2006-09-12 23:37:43Z duns $
 */
public class ByteBuffer {

    private char[] buffer;
    private int len;

    public ByteBuffer() {
        this(256);
    }
    
    public ByteBuffer(int len) {
        buffer = new char[len];
        reset();
    }

    public void reset() {
        len = 0;
    }
    
    public void append(int i) {
        this.append((char)i);
    }
    
    public void append(char c) {
        if (len >= buffer.length) {
            char[] newBuffer = new char[buffer.length*2];
            System.arraycopy(buffer, 0, newBuffer, 0, len);
            buffer = newBuffer;
        }
        buffer[len] = c;
        len++;
    }

    public String getString() {
        return new String(buffer, 0, len);
    }
    
    public char[] getChars() {
        char[] r = new char[len];        
        System.arraycopy(buffer, 0, r, 0, len);
        return r;
    }
    
}