package org.zplet.iff;

import java.io.*;
import java.util.Stack;

public class IFFFile extends RandomAccessFile {
	protected Stack<Long> openchunks;

	public IFFFile(String name, String mode) throws IOException {
		super(name, mode);
		openchunks = new Stack<Long>();
	}

	public IFFFile(File file, String mode) throws IOException {
		super(file, mode);
		openchunks = new Stack<Long>();
	}

	public void chunkSeek(int offset) throws IOException {
		seek((openchunks.peek()).longValue() + 4 + offset);
	}

	public int getChunkPointer() throws IOException {
		return (int) getFilePointer() - (int) (openchunks.peek()).longValue()
				- 4;
	}
}