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

public class Convert {
    public static void main(String[] args) throws IOException {
        if(args.length == 0) {
            System.out.println("Provide filesnames on commandline");
            return;
        }
        for(int i=0; i < args.length; i++) {
            convert(args[i]);
        }
    }

    private static void convert(String filename) throws IOException {
        File one = new File(filename);
        if(! one.exists())
            return;
        File two = new File(filename +"~");
        int count=1;
        while(two.exists()) {
            two = new File(filename + String.valueOf(count++) +"~");
        }
        Reader reader = new InputStreamReader(new FileInputStream(one), "ISO-8859-1");
        Writer writer = new FileWriter(two);
        try {
            while(true) {
                int character = reader.read();
                if(character == -1)
                    break;
                if(character < 128)
                    writer.write((char) character);
                else {
                    writer.write("\\u");
                    String val = Integer.toString((int) ((char) character), 16);
                    for(int i=4; i > val.length(); i--)
                        writer.write("0");
                    writer.write(val);
                }
            }
        } catch(IOException e) {
            two.delete();
        } finally {
            reader.close();
            writer.close();
        }
    }
}