NAME

Games::Go::Dg2ASCII - Perl extension to convert Games::Go::Diagrams to ASCII diagrams

SYNOPSIS

use Games::Go::Dg2ASCII

my $dg2ascii = B<Games::Go::Dg2ASCII-E<gt>new> (options);
my $ascii = $dg2ascii->convertDiagram($diagram);

DESCRIPTION

A Games::Go::Dg2ASCII object converts a Games::Go::Diagram object into ASCII diagrams.

METHODS

my $dg2ascii = Games::Go::Dg2ASCII->new (?options?)

A new Games::Go::Dg2ASCII takes the following options:

General Dg2 Converter Options:

boardSize => number

Sets the size of the board.

Default: 19

doubleDigits => true | false

Numbers on stones are wrapped back to 1 after they reach 100. Numbers associated with comments and diagram titles are not affected.

Default: false

coords => true | false

Generates a coordinate grid.

Default: false

topLine => number (Default: 1)

bottomLine => number (Default: 19)

leftLine => number (Default: 1)

rightLine => number (Default: 19)

The edges of the board that should be displayed. Any portion of the board that extends beyond these numbers is not included in the output.

diaCoords => sub { # convert $x, $y to Games::Go::Diagram coordinates }

This callback defines a subroutine to convert coordinates from $x, $y to whatever coordinates are used in the Games::Go::Diagram object. The default diaCoords converts 1-based $x, $y to the same coordinates used in SGF format files. You only need to define this if you're using a different coordinate system in the Diagram.

Default: sub { my ($x, $y) = @_; $x = chr($x - 1 + ord('a')); # convert 1 to 'a', etc $y = chr($y - 1 + ord('a')); return("$x$y"); }, # concatenate two letters

file => 'filename' | $descriptor | \$string | \@array

If file is defined, the ASCII diagram is dumped into the target. The target can be any of:

filename

The filename will be opened using IO::File->new. The filename should include the '>' or '>>' operator as described in 'perldoc IO::File'. The ASCII diagram is written into the file.

descriptor

A file descriptor as returned by IO::File->new, or a \*FILE descriptor. The ASCII diagram is written into the file.

reference to a string scalar

The ASCII diagram is concatenated to the end of the string.

reference to an array

The ASCII diagram is split on "\n" and each line is pushed onto the array.

Default: undef

print => sub { my ($dg2ascii, @lines) = @_; ... }

A user defined subroutine to replace the default printing method. This callback is called from the print method (below) with the reference to the Dg2ASCII object and a list of lines that are part of the ASCII diagram lines.

$dg2tex->configure (option => value, ?...?)

Change Dg2TeX options from values passed at new time.

$dg2ascii->print ($text ? , ... ?)

prints the input $text directly to file as defined at new time. Whether or not file was defined, print accumulates the $text for later retrieval with converted.

my $ascii = $dg2ascii->converted ($replacement)

Returns the entire ASCII diagram converted so far for the Dg2ASCII object. If $replacement is defined, the accumulated ASCII is replaced by $replacement.

$dg2ascii->comment ($comment ? , ... ?)

Inserts the comment character (which is nothing for ASCII) in front of each line of each comment and prints it to file.

my $dg2ascii->convertDiagram ($diagram)

Converts a Games::Go::Diagram into ASCII. If file was defined in the new method, the ASCII is dumped into the file. In any case, the ASCII is returned as a string scalar.

my $ascii = $dg2ascii->convertText ($text)

Converts $text into ASCII code - gee, that's not very hard. In fact, this method simply returns whatever is passed to it. This is really just a place-holder for more complicated converters.

Returns the converted text.

$title = $dg2ascii->convertProperties (\%sgfHash)

convertProperties takes a reference to a hash of properties as extracted from an SGF file. Each hash key is a property ID and the hash value is a reference to an array of property values: $hash->{propertyId}->[values]. The following SGF properties are recognized:

GN GameName

EV EVent

RO ROund

PW PlayerWhite

WR WhiteRank

PB PlayerBlack

BR BlackRank

DT DaTe

PC PlaCe

GC GameComment

KM KoMi

RE REsult

TM TiMe

Both long and short property names are recognized, and all unrecognized properties are ignored with no warnings. Note that these properties are all intended as game-level notations.

$dg2ascii->close

prints any final text to the diagram (currently none) and closes the dg2ascii object. Also closes file if appropriate.

SEE ALSO

sgf2dg(1)

Script to convert SGF format files to Go diagrams

BUGS

Seems unlikely.

AUTHOR

Reid Augustin, <reid@hellosix.com>

COPYRIGHT AND LICENSE

Copyright (C) 2005 by Reid Augustin

This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself, either Perl version 5.8.5 or, at your option, any later version of Perl 5 you may have available.