/*
 

 
* HeadingProviderExample.java
 
* Copyright (C) 2012 Kimmo Tuukkanen
 
*
 
* This file is part of Java Marine API.
 
* < http://ktuukkan.github.io/marine-api/>
 
*
 
* Java Marine API is free software: you can redistribute it and/or modify it
 
* under the terms of the GNU Lesser General Public License as published by the
 
* Free Software Foundation, either version 3 of the License, or (at your
 
* option) any later version.
 
*
 
* Java Marine API 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 Lesser General Public License
 
* for more details.
 
*
 
* You should have received a copy of the GNU Lesser General Public License
 
* along with Java Marine API. If not, see < http://www.gnu.org/licenses/>.
 
*/
package net.sf.marineapi.example;

import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.InputStream;

import net.sf.marineapi.nmea.io.SentenceReader;
import net.sf.marineapi.provider.HeadingProvider;
import net.sf.marineapi.provider.event.HeadingEvent;
import net.sf.marineapi.provider.event.HeadingListener;

/**
 
* Demonstrates the usage of HeadingProvider.
 
*
 
* @author Kimmo Tuukkanen
 
*/

public class HeadingProviderExample implements HeadingListener {

	
private SentenceReader reader;
	
private HeadingProvider provider;

	
/**
	 
* Creates a new instance of FileExample
	 
*
 

	 
* @param file File from which to read Checksum data
	 
*/

	
public HeadingProviderExample(File file) throws IOException {

		
// create sentence reader and provide input stream
		
InputStream stream = new FileInputStream(file);
		
reader = new SentenceReader(stream);

		
// create provider and register listener
		
provider = new HeadingProvider(reader);
		
provider.addListener(this);

		
reader.start();
	
}

	
/*
	 
* (non-Javadoc)
	 
* @see
	 
* net.sf.marineapi.provider.event.HeadingListener#providerUpdate(net.sf
	 
* .marineapi.provider.event.HeadingEvent)
	 
*/
	
public void providerUpdate(HeadingEvent evt) {
		
System.out.println(evt.toString());
	
}

	
/**
	 
* Main method takes one command-line argument, the name of the file to
	 
* read.
	 
*
 

	 
* @param args Command-line arguments
	 
*/

	
public static void main(String[] args) {

		
if (args.length != 1) {
			
String msg = "Example usage:\njava HeadingProviderExample nmea.log";
			
System.out.println(msg);
			
System.exit(0);
		
}

		
try {
			
new HeadingProviderExample(new File(args[0]));
			
System.out.println("Running, press CTRL-C to stop..");
		
} catch (IOException e) {
			
e.printStackTrace();
			
System.exit(1);
		
}
	
}
}