Re: computer-go: SGF parser in C++

[Jeffrey Greenberg <jgberg@xxxxxxxx>]

Jean-Pierre,
    How would you like to help in modifying OpenGo with your superior interface?

I've also added some code to OpenGo so that different parsers can be added for
game import & export.  In addition, it now interfaces to GnuGo and to other
programs using a pipe-based gmp protocol.
jeff greenberg


Jean-Pierre Vesinet wrote:

> Hi Guido,
>
> There seems to be no C++ source available anywhere (OpenGo reads only Ishi
> format), but there are several for Java (JaGo for instance).
>
> I will be writing my own parser very soon for the program I have been toying
> with for the past 6 months (it's called DemaGo, the GUI is 95% finished and
> is very nice looking).
>
> Since there is no equivalent IMO on the Win32 platform of excellent UNIX
> software such as CGoban (yes, I know about the port but it needs an X11
> server or emulator) I decided to write one myself in C++ (Visual C++ 5). It
> already has lots of nice features :
> - multiple games (MDI) interface,
> - double buffering (the display never jumps/flickers),
> - 256 colors (palette) and true-color display support,
> - nice resizeable board and stones (with smooth shadows under the stones and
> "ray-tracing" quality stones),
> - game tree pane which supports several games as defined in the SGF4 spec,
> - rulesets support (for the time being I only check basic ko and suicide),
> - User-selectable goban texture and sounds,
> - Multiple undo/redo.
>
> At first I tried a very high level approach for the parser module. It used a
> grammar (sort of lex/yacc). I just entered the rules and it worked
> perfectly! But I wanted to parse big files (700 Kb for example for a fuseki
> database) in less than 10 seconds (as MGT), and this parser was much too
> slow.  It was also very strict and didn't accept several formats (older SGF
> files, MGT's almost-SGF, etc.).
>
> So I'll write a much simpler, hand-coded parser, which I'll be glad to post
> ASAP.
>
> Regards,
>
> Jean-Pierre
>
> -----Message d'origine-----
>
> Hi!
>
> Does anyone know of a parser for SGF written in C++?
>
> Greetings and happy new year
>
> Guido

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