package  com.forward.test.goods;

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

 import  javax.xml.parsers.*;

 import  org.xml.sax.*;
 import  org.xml.sax.helpers.*;


 public   class  PhoneBookReader  extends  DefaultHandler
{
     private   final  String searchableTag = "surname";
     private   final  String dataTag = "number";

     private  Map<String, Collection<String>> cache =  new  HashMap<String, Collection<String>> ();

     public  PhoneBookReader ()
    {
    }

     private  StringBuffer valueBuffer =  new  StringBuffer();

     private  String lastSubject;

     public   void  endElement (String uri, String name, String qName)
             throws  SAXException
    {

        String val = valueBuffer.toString().trim();
         if  (val.length() >  0 ) {
             if  (qName.equals( this .dataTag)) {

                Collection<String> subjects = cache.get(lastSubject);
                 if  (subjects ==  null ) {
                    subjects =  new  ArrayList<String> ();
                    cache.put(lastSubject, subjects);
                }
                subjects.add(val);

                lastSubject =  null ;

            }  else   if  (qName.equals( this .searchableTag)) {
                lastSubject = val.toLowerCase();
            }
        }
        valueBuffer =  new  StringBuffer();
    }

     public   void  characters ( char  ch[],  int  start,  int  length)
    {
         for  ( int  i = start; i < start + length; i++) {
             switch  (ch[i]) {
             case  '\\':
                 break ;
             case  '"':
                 break ;
             case  '\n':
                 break ;
             case  '\r':
                 break ;
             case  '\t':
                 break ;
             default :
                valueBuffer.append(ch[i]);
                 break ;
            }
        }
    }
    
     public  Collection<String> getPhones(String surname) {
         return  cache.get(surname.toLowerCase());
    }


     public   static   void  main (String args[])
             throws  Exception
    {
         if  (args.length !=  2 ) {
            System.out.println("Use PhoneBookReader <filename> <surnane>");
             return ;
        }  else  {

            System.out.println("Searching '" + args[1] + "' in file '" + args[0] + "'");

            PhoneBookReader reader =  new  PhoneBookReader();

            SAXParserFactory factory = SAXParserFactory.newInstance();
            factory.setValidating(false);
            SAXParser parser = factory.newSAXParser();
            parser.parse( new  File(args[ 0 ]), reader);

            System.out.println("Search for surname '" + args[1] + "' = " + reader.getPhones(args[ 1 ]));
            System.out.println("Search for surname 'Ham' = " + reader.getPhones("Ham"));
            System.out.println("Search for surname 'kvakva' = " + reader.getPhones("kvakva"));

        }
    }
}