// copyright (c) Hiroyuki Murata 1997.
// free to use, distribute or modify.
import java.io.*;

public class Native2Utf {

    static String usage =
        " Native text to UTF-8 Converter for JDK 1.1.x.\n" +
        "  Usage: java Native2Utf [-e encoding] nativefile outputfile\n" +
        "    encoding = \"SJIS\"(default), \"EUCJIS\" or \"JIS\""
    ;

    static final int MAXLEN = 1024;
    static char[] buf = new char[MAXLEN];
    static String
        encoding = "SJIS",
        rfile, wfile
    ;

    static public void main(String[] args) {

        try {
            int argi=0;
            if (args[0].equals("-e")) {
                encoding = args[1];
                argi = 2;
            }
            rfile = args[argi++];
            wfile = args[argi];
        } catch (ArrayIndexOutOfBoundsException e) {
            System.out.print(usage);
            System.exit(0);
        }

        try {
            InputStreamReader reader = new InputStreamReader(
                new BufferedInputStream(
                    new FileInputStream(rfile)
                ),
                encoding
            );
            DataOutputStream dos = new DataOutputStream (
                new BufferedOutputStream(
                    new FileOutputStream(wfile)
                )
            );

            int ci, column = 0;

            for (;;) {
                ci = reader.read();
                char cc = (char)ci;
                if (ci == -1) {
                    dos.close();
                    reader.close();
                    System.exit(0);
                }
                if (column >= MAXLEN) {
                    System.err.println("too long line!");
                    System.exit(1);
                }

                buf[column++] = cc;

                if (cc == '\n') {
                    String line = new String(buf, 0, column);
                    dos.writeUTF(line);
                    //System.out.print(line);
                    column = 0;
                }
            }

        } catch (FileNotFoundException e) {
            System.err.println("file " + rfile + " not found.");
        } catch (UnsupportedEncodingException e) {
            System.err.println("encoding " + encoding + " not supported.");
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}