import java.io.*;
import java.net.*;
import java.lang.*;
import java.util.*;

class StringIndex
	{
	public boolean changed;

	Object NullHashValue = new Object();
	Hashtable hash;
	GrowingStringArray strings;

	public StringIndex( ) { init(null,false); };
	public StringIndex( String[] strs ) { init(strs,false); }
	public StringIndex( String in ) {	init( clib.readFileLines(in) ,false );	};
	public StringIndex( boolean NoCase ) { init(null,NoCase); };
	public StringIndex( String[] strs,boolean NoCase ) { init(strs,NoCase); }
	public StringIndex( String in,boolean NoCase ) {	init( clib.readFileLines(in),NoCase );	};

	void init( String[] strArray , boolean NoCase )
		{
		if ( strArray == null )
			{
			hash = new Hashtable(1024,(float)0.5);
			strings = new GrowingStringArray();
			}
		else
			{
			int i;
			hash = new Hashtable((strArray.length*2)+1024,(float)0.5);
			strings = new GrowingStringArray(strArray.length+512);
			for(i=0;i<strArray.length;i++)
				if ( NoCase ) add( clib.strupr(strArray[i]) );
				else add( strArray[i] );
			}
		changed = false;
		};

	public boolean hasNoCase(String str) {	return( has( clib.strupr(str) ) ); };
	public void addNoCase(String str) {	add( clib.strupr(str) ); };

	public boolean has(String str)
		{
		return( hash.containsKey( (Object) str ) );
		};

	public void add(String str)
		{
		if ( str.length() < 1 ) return;
		if ( has(str) ) return;

		strings.append( str );
		hash.put( (Object) str , NullHashValue );
		changed = true;
		};

	public String[] toArray()
		{
		strings.condense();
		return( strings.a );
		};

	public void save( String to )
		{
		clib.writeFileLines(to,toArray());
		changed=false;
		}
	};