Simple utility to convert from old Bulgarian DOS cyrillic to Windows 1251 text encoding.

Plus64.java

import java.io.*;

/**
 * Simple utility to convert from old Bulgarian DOS cyrillic to Windows 1251 text encoding.
 * <pre>
 * Usage: java Plus64 inputfile outputfile
 * </pre>
 * @author dimiter@blue-edge.bg
 * @since Mar 3, 2003  1:15:33 AM
 */
public class Plus64 {
    public static void main(String[] args) throws IOException {
        checkUsage(args);
        byte[] buf = readFile(args[0]);
        for (int i = 0; i < buf.length; i++) if (buf[i] < 0) buf[i] += 64;
        writefile(args[1], buf);
    }

    private static byte[] readFile(String filename) throws IOException {
        FileInputStream in = new FileInputStream(filename);
        byte[] buf = new byte[in.available()];
        in.read(buf);
        in.close();
        return buf;
    }

    private static void writefile(String filename, byte[] buf) throws IOException {
        FileOutputStream out = new FileOutputStream(filename);
        out.write(buf);
        out.flush();
        out.close();
    }

    private static void checkUsage(String[] args) {
        if (args.length == 2) return;

        System.out.println("USAGE: \n\t java Plus64 <inputfile> <outputfile>");
        System.exit(0);
    }
}