Search found 6 matches

by sancoder
Wed Feb 08, 2012 01:17
Forum: Draughts, Computer, Internet
Topic: PDN 3.0 Standard Review Request
Replies: 79
Views: 41594

Re: PDN 3.0 Standard Review Request

Congratulations to Wieger!

Rein, let me point that UTF-8 is the encoding for the Unicode character set. Character set answers to question what characters are allowed, the encoding answers to the question how they are stored in bytes.
by sancoder
Mon Jan 09, 2012 13:37
Forum: Draughts, Computer, Internet
Topic: PDN 3.0 Standard Review Request
Replies: 79
Views: 41594

Re: PDN 3.0 Standard Review Request


in PGN there is a section about character codes: http://www.saremba.de/chessgml/standards/pgn/pgn-complete.htm#c4.1 . It recommends to use only ASCII characters. This seems questionable to me, so I did not copy it into the PDN standard.

Read the section about character encodings.
The decision to ...
by sancoder
Mon Jan 09, 2012 13:14
Forum: Draughts, Computer, Internet
Topic: PDN 3.0 Standard Review Request
Replies: 79
Views: 41594

Re: PDN 3.0 Standard Review Request


It seems to me that STRING values and COMMENT values should be allowed to contain Unicode characters.

That's good.


On the one hand I can understand that it is useful to restrict PDN to a single format like UTF-8. On the other hand I find it questionable to disallow ASCII files. I can't ...
by sancoder
Sat Jan 07, 2012 21:48
Forum: Draughts, Computer, Internet
Topic: PDN 3.0 Standard Review Request
Replies: 79
Views: 41594

Re: PDN 3.0 Standard Review Request


What is your opinion on allowing different separators? E.g. in Russian draughts, I often see '-' for moves and ':' for captures, and in Thai draughts they use '-' for moves and captures. The proposal only allows ':' in the reading grammar, not in the writing grammar. Is this OK as far as the ...
by sancoder
Sat Jan 07, 2012 21:26
Forum: Draughts, Computer, Internet
Topic: PDN 3.0 Standard Review Request
Replies: 79
Views: 41594

Re: PDN 3.0 Standard Review Request

As to character encodings.
We have several options to choose: ASCII, UTF-8, any other 1-byte per character codepages (cp1252, for Europe I guess), UTF-16, other N-byte per character codepages (UCS-2 but it seems to be deprecated almost everywhere).

If ASCII would go to the standard - the checkers ...
by sancoder
Wed Oct 05, 2011 05:26
Forum: Draughts, Computer, Internet
Topic: PDN 3.0 Standard Review Request
Replies: 79
Views: 41594

Re: PDN 3.0 Standard Review Request

A word about FEN notation.
In russian checkers fields are named as follows:
a1, c1, e1, g1, b2, d2, ...

I have tried to specify the field by such a name, but PDN checker rejects this.
I think, there is a problem here. Moves are specified as c3-d4 f6-g5, and this is ok.

Another problem is that PDN ...