portable-game-notation

A PHP library to parse and write chess games in the portable game notation (PGN) format.

Installation

Via composer

composer require chesszebra/portable-game-notation

Usage

Reading

From a string

Reading a single PGN game from a string:

use ChessZebra\PortableGameNotation\Reader\StringReader;

$reader = new StringReader('1. e4 e5');

$tokenIterator = $reader->read();

From a stream

Reading a single PGN game from a stream:

use ChessZebra\PortableGameNotation\Reader\StringReader;

$reader = new StreamReader(fopen('games.pgn', 'r'));

$tokenIterator = $reader->read();

Writing

To a string

Wriring a PGN game to a string:

use ChessZebra\PortableGameNotation\TokenIterator;
use ChessZebra\PortableGameNotation\Token\StandardAlgebraicNotation;
use ChessZebra\PortableGameNotation\Writer\StringWriter;
use ChessZebra\StandardAlgebraicNotation\Notation;

$tokenIterator = new TokenIterator([
    new MoveNumber(1),
    new StandardAlgebraicNotation(new Notation('e4')),
]);

$writer = new StringWriter();
$writer->write($tokenIterator);

$pgn = $writer->getPgn();

To a stream

Wriring a PGN game to a stream:

use ChessZebra\PortableGameNotation\TokenIterator;
use ChessZebra\PortableGameNotation\Token\StandardAlgebraicNotation;
use ChessZebra\PortableGameNotation\Writer\Stream;
use ChessZebra\StandardAlgebraicNotation\Notation;

$tokenIterator = new TokenIterator([
    new MoveNumber(1),
    new StandardAlgebraicNotation(new Notation('e4')),
]);

$writer = new Stream(fopen('game.pgn', 'w'));
$writer->write($tokenIterator);

Tokenizing games

From a string

use ChessZebra\PortableGameNotation\Lexer\StringLexer;

$lexer = new StringLexer('1. e4');

$token = $lexer->getNextToken();

From a resource

use ChessZebra\PortableGameNotation\Lexer\StreamLexer;

$lexer = new StreamLexer(fopen('my-games.pgn', 'r'));

$token = $lexer->getNextToken();

Contributing

Please see CONTRIBUTING and CONDUCT for details.

Security

If you discover any security related issues, please report them via HackerOne.

License

The MIT License (MIT). Please see License File for more information.