import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.io.PrintWriter;
import java.util.Scanner;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class CipherMachine {

	private static PrintWriter pw = null;
	private static Scanner scn = null;

	public static boolean setWriter(String fileName) {
		boolean result = false;
		try {
			pw = new PrintWriter(
					new BufferedWriter(new OutputStreamWriter(new FileOutputStream(fileName, true), "sjis")));
			result = true;
		} catch (FileNotFoundException e) {
			System.out.println(e);
		} catch (IOException e) {
			System.out.println(e);
		}
		return result;
	}

	public static boolean setScanner(String str) {
		boolean result = false;
		try {
			scn = new Scanner(new File(str));
			result = true;
		} catch (FileNotFoundException e) {
			System.out.println(e);
		}
		return result;
	}

	public static boolean setScanner(File inputFile) {
		boolean result = false;
		try {
			scn = new Scanner(inputFile);
			result = true;
		} catch (FileNotFoundException e) {
			System.out.println(e);
		}
		return result;
	}

	public static boolean closeWrier() {
		boolean result = false;
		if (pw != null) {
			pw.close();
			result = true;
		}
		return result;
	}

	public static boolean closeScanner() {
		boolean result = false;
		if (scn != null) {
			scn.close();
			result = true;
		}
		return result;
	}

	public static boolean encode(Scanner scn) {
		boolean result = false;
		if (!setWriter("cipher.txt")) {
			return false;
		}
		while (scn.hasNext()) {
			String buf = scn.next();
			int i = 0;
			while (true) {
				pw.printf("%s ", Integer.toBinaryString(buf.charAt(i++)));
				if (i >= buf.length())
					break;
				pw.printf("0%s ", Integer.toOctalString(buf.charAt(i++)));
				if (i >= buf.length())
					break;
				pw.printf("%s ", Integer.toString(buf.charAt(i++)));
				if (i >= buf.length())
					break;
				pw.printf("0x%s ", Integer.toHexString(buf.charAt(i++)));
				if (i >= buf.length())
					break;
			}
			pw.printf("%s", "@ ");
		}
		closeWrier();
		return result;
	}

	public static boolean decode(String str){
		setScanner(str);
		return decode();
	}
	
	public static boolean decode(File inputFile){
		setScanner(inputFile);
		return decode();
	}
	
	public static boolean decode() {
		boolean result = false;
		if (!setWriter("decode.txt")) {
			return false;
		}
		if (scn == null) {
			return false;
		}
		int i = 0;
		while (scn.hasNext()) {
			String buf = scn.next();
			pw.printf("%c", convert(buf));
			System.out.println(i + buf);
		}
		closeWrier();
		closeScanner();
		return result;
	}

	private static char convert(String str) {
		if (str.equals("@"))
			return ' ';
		if (str.length() > 2 && str.charAt(1) == 'x') {
			StringBuilder buf = new StringBuilder();
			for(int i = 2; i < str.length(); i++){
				buf.append(str.charAt(i));
			}
			return (char) (Integer.parseInt(buf.toString(), 16));
		}
		if (str.charAt(0) == '0') {
			StringBuilder buf = new StringBuilder();
			for(int i = 1; i < str.length(); i++){
				buf.append(str.charAt(i));
			}
			return (char) (Integer.parseInt(buf.toString(), 8));
		}
		Pattern p = Pattern.compile("^[01]*$");
		Matcher m = p.matcher(str);
		if (str.length() >= 5 && m.find()) {
			return (char) (Integer.parseInt(str, 2));
		}
		p = Pattern.compile("^[0-9]*$");
		m = p.matcher(str);
		if (m.find()) {
			return (char) (Integer.parseInt(str));
		}
		return '\u0020';
	}
}