Enkhsanaa / pgn-parser

Parse PGN files using peg.js

pgn-parser

Parse PGN files into a JS data structure (and syntax validation on the PGN)

Usage

From the command line: pgn-parser.js some/pgn/file.pgn

From js

const pgnParser = require('pgn-parser');

pgnParser((err, parser) => {
    const [result] = parser.parse('[White "me"]\n[Black "you"]\n1. e4 e5 2. Nf3 Nc6 3. Bc4 Bc5 (3. ...Nf6 {is the two knights}) 4. b4 Bxb4 5. c3 Ba5 6. d4 exd4 7. O-O Nge7 $1 *');
    console.log(result);
});

Output

The result parsing the PGN above would be

[
    {
        headers: {
            White: "me",
            Black: "you"
        },
        result: "*",
        moves: [
            { move: 'e4', move_number: 1},
            { move: 'e5',
            { move: 'Nf3', move_number: 2},
            { move: 'Nc6'},
            { move: 'Bc4', move_number: 3},
            { move: 'Bc5', ravs: [{ moves: [{move_number: 3, move: "...Nf6", comment: "is the two knights"}]}]},
            { move: 'b4', move_number: 4},
            { move: 'Bxb4'},
            { move: 'c3', move_number: 5},
            { move: 'Ba5'},
            { move: 'd4', move_number: 6},
            { move: 'exd4'},
            { move: 'O-O', move_number: 7},
            { move: 'Nge7', nags: ["$1"]}
        ]
    }
]

Run tests

npm install
npm test