NAME

       yyt - A psuedo tty program which automatically converts among Chinese encodings.

SYNOPSIS

       yyt [-h|--help]
       yyt [-V|--version]
       yyt [-f encoding|--from=encoding] [-t encoding|--to=encoding] [command...]

       Where  [command...]  is  the  command  you want to run using yyt. If not given, the default is set to the
       environment variable SHELL.  If SHELL is not set, /bin/sh will be used.

DESCRIPTION

       yyt is a psuedo tty program that will translate Chinese encodings automatically on a  console.  Supported
       encodings are BIG5/GB2312/HZ/UTF-7/UTF-8/UCS.

       yyt is similar to hztty(1) except that yyt will make things automatic all the way.

       Yi Yan Tang use Saka's libhz to detect and convert Chinese encodings. libhz is include in autoconvert and
       can be found at http://www.debian.org/~ygh/.

OPTIONS

       yyt supports following Chinese encodings for both input and output:

              GB2312, BIG5, HZ, UTF-7, UTF-8, UCS

       yyt supports following command line options:

       -f encoding or --from=encoding
              This option sets the encoding of the incoming text. The valid values  of  encoding  are  specified
              above.

       -t encoding or --to=encoding
              This  option  sets  the encoding of the local terminal. The valid values of encoding are specified
              above.

       -h or --help
              This option prints out the usage of yyt.

       -V or --version
              Gives the current version of ytt.

       NOTE: If the --from encoding is not set, yyt will guess the encoding of the incoming text. You can safely
       type the command:
            % yyt
       to start the program. Then you can use the command-mode described below to control how yyt acts.

USAGE

       There  are  some on the fly commands which can be used to control the behavior of yyt once it is started.
       User can use these commands to switch encoding, disable  auto-encoding-detection  or  turn  off  encoding
       conversion all together.

       To active the yyt command mode, press the combination key

                 ctrl-y

       (for  switch-on-YYT-command-mode).  Then  follow  a  single key command. Once the command is entered, the
       command mode is switched off.

       The possible commands in the command mode are:

       g      For switch incoming encoding to GB2312 encoding.

       b      For switch incoming encoding to BIG5 encoding.

       h      For switch incoming encoding to HZ encoding.

       u      For switch incoming encoding to UCS encoding.

       7      For switch incoming encoding to UTF-7 encoding.

       8      For switch incoming encoding to UTF-8 encoding.

       r      For reset encoding state to the initial mode.

       d      For turn off all the encoding conversions.

       a      For set the incoming encoding to auto-detect mode.

       y      For input a ctrl-y keycode to the terminal so that ctrl-y can still be typed in.

       Note: If the incoming encoding is explicitly set either through command line options or on line  command,
       the user input is also converted from the terminal encoding to the incoming encoding.

ENVIRONMENT

       LC_CTYPE
              If  set,  the  incoming  encoding  will  be  set  to  the  encoding of LC_CTYPE.  LC_CTYPE will be
              Overridden by the --to command line option.

       SHELL
              If set and there are no command line option given for [command...], the SHELL will be executed  on
              the start of the program.

DIAGNOSTICS

       Please see BUGS section.

BUGS

       yyt tries to segment a stream of text into Hanzi parts and English parts.  That way, we can have a better
       guessing on the Chinese encodings for every small part of Chinese. However, Hanzi segmentation  does  not
       always work correctly, especially when using curses/slang based programs. Redraw screen (normally ctrl-l)
       sometime correct it. This problem is expected.  Suggestions on better segmentation  algrithm  are  always
       welcomed.

       Turn off auto-detection by specify a fromcode by (ctr-y key ) will give better conversion result.

AUTHOR

       hashao <hashao@chinese.com>

SEE ALSO

       libhz(3), pyhz(7), hztty(1)
       yiyantang homepage at http://yiyantang.on.openave.net/
       autoconvert homepage at http://www.debian.org/~ygh/