/*
  This file is a part of Angry IP Scanner source code,
  see http://www.angryip.org/ for more information.
  Licensed under GPLv2.
 */

package net.azib.ipscan.exporters;

import java.io.*;

/**
 * Helper base class of all built-in exporters
 *
 * @author Anton Keks
 */
public abstract class AbstractExporter implements Exporter {
	protected PrintWriter output;
	protected boolean append;

	public void shouldAppendTo(File file) {
		this.append = true;
	}

	public void start(OutputStream outputStream, String feederInfo) throws IOException {
		output = new PrintWriter(new OutputStreamWriter(outputStream));
	}

	public void end() throws IOException {
		// this does the flush internally as well
		if (output.checkError())
			throw new IOException();
	}

	@Override public void nextAddressResults(Object[] results) throws IOException {
	}

	public Exporter clone() {
		try {
			return (Exporter) super.clone();
		}
		catch (CloneNotSupportedException e) {
			throw new RuntimeException(e);
		}
	}
}
