//FileRead.java
//robert j.	russell


import java.io.*;

public class FileRead {

	FileReader fstream;
	BufferedReader in;
	String lastLine;
	boolean lineRead;
	
	public FileRead(String name)
	{
		lineRead = false;
		lastLine = "";
		try {
			fstream = new FileReader(name);
			in = new BufferedReader(fstream);
		}
		catch (IOException e) {
			System.out.println("File not found: "+e.getMessage());
			System.exit(-2);
		}
		
	}

	public void close()
	{
		try {
			in.close();
		}
		catch (Exception e) {
		}
	}
	
	public boolean eof()
	{
		if (lineRead)
			return false;
		try {
			if (!in.ready()) {
				return true;
			}
		}
		catch (Exception e) {
			return true;
		}
		
		lastLine = getString();
		lineRead = true;
		return false;
	}
	
	public int getInt()
	{
		String input = getString();
		String rest = input+"";
		input = input.trim();
		char ch = input.charAt(0);
		if ((ch < '0' || ch > '9') && ch != '+' && ch != '-') {
			System.out.println("Invalid Integer: " + input);
			return 0;
		}
		int pos = input.indexOf(' ');
		if (pos > 0) {
			rest = input.substring(0, pos);
			input = input.substring(pos+1);
			lastLine = input.trim();
			if (lastLine.length() > 0)
				lineRead = true;
			else
				lineRead = false;
		}
		int rlt;
		try {
			rlt = Integer.parseInt(rest);
		}
		catch (Exception e) {
			System.out.println("Invalid Integer: " + rest);
			return 0;
		}
		return rlt;
	}
	
	public double getDouble()
	{
		String input = getString();
		String rest = input+"";
		input = input.trim();
		char ch = input.charAt(0);
		if ((ch < '0' || ch > '9') && ch != '+' && ch != '-') {
			System.out.println("Invalid Double: " + input);
			return 0.0;
		}
		int pos = input.indexOf(' ');
		if (pos > 0) {
			rest = input.substring(0, pos);
			input = input.substring(pos+1);
			lastLine = input.trim();
			if (lastLine.length() > 0)
				lineRead = true;
			else
				lineRead = false;
		}
		double rlt;
		try {
			rlt = Double.parseDouble(rest);
		}
		catch (Exception e) {
			System.out.println("Invalid Double: " + input);
			return 0;
		}
		return rlt;
	}
	
	public String getString()
	{
		if (lineRead) {
			lineRead = false;
			return lastLine;
		}
		try {
			if (in.ready()) {
				return in.readLine();
			}
			return "";
		}
		catch (Exception e) {
			System.out.println("An error occured in getString()");
			return "";
		}
	}
}