TLDList.java

package guang.crawler.crawlWorker.url;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.Set;

public class TLDList
{
	
	private final String	tldNamesFileName	= "tld-names.txt";
	
	private Set<String>	   tldSet	         = new HashSet<String>();
	
	private static TLDList	instance	     = new TLDList();
	
	public static TLDList getInstance()
	{
		return TLDList.instance;
	}
	
	private TLDList()
	{
		try
		{
			InputStream stream = this.getClass().getClassLoader()
			        .getResourceAsStream(this.tldNamesFileName);
			if (stream == null)
			{
				System.err.println("Couldn't find " + this.tldNamesFileName);
				System.exit(-1);
			}
			
			BufferedReader reader = new BufferedReader(new InputStreamReader(
			        stream));
			String line;
			while ((line = reader.readLine()) != null)
			{
				line = line.trim();
				if (line.isEmpty() || line.startsWith("//"))
				{
					continue;
				}
				this.tldSet.add(line);
			}
			reader.close();
		} catch (Exception e)
		{
			e.printStackTrace();
		}
	}
	
	public boolean contains(String str)
	{
		return this.tldSet.contains(str);
	}
	
}