package net.nutch.net;

import java.io.Reader;
import java.io.FileReader;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.io.IOException;

import java.util.logging.Logger;
import net.nutch.util.*;
import net.nutch.net.PrefixURLFilter;
import net.nutch.net.RegexURLFilter;

public class PrefixB4URLFilter implements URLFilter {

  private static final Logger LOG =
    LogFormatter.getLogger("net.nutch.net.PrefixB4URLFilter");

  private RegexURLFilter regexfilter;
  private PrefixURLFilter prefixfilter;
  
  public PrefixB4URLFilter() {  
    try { 
      regexfilter = new RegexURLFilter();
    } 
    catch (Exception e) {
      throw new RuntimeException("Couldn't create RegexURLFilter", e);
    }
    
    try {
      prefixfilter = new PrefixURLFilter();
    } catch (Exception e) {
      throw new RuntimeException("Couldn't create PrefixURLFilter", e);
    }
  }
    
  public String filter(String url) {  
    if (regexfilter.filter(url) == null) {
      return null;
    } else  {
      if (prefixfilter.filter(url) == null) {
        return null;
      } else {
        return url;
      }
    }
  }
  
  public static void main(String args[])
    throws IOException {

    PrefixB4URLFilter filter = new PrefixB4URLFilter();  
    BufferedReader in = new BufferedReader(new InputStreamReader(System.in));
    
    String line;
    System.out.println("Please insert domain");
    
    while((line=in.readLine())!=null) {
      String out=filter.filter(line);
      if(out!=null) {
        System.out.println("OK");
      } else {
        System.out.println("NULL");
      }
    }
  }
  
}