#pgn #parse #json #rust

bin+lib pgnparse

Parse PGN to Rust struct ( headers as hash map, main line moves as san, uci, fen, epd records ) or to JSON. All lichess variants are supported. Custom starting position using FEN header is supported.

16 releases

0.1.15 Jan 21, 2021
0.1.14 Jan 21, 2021

#2 in #pgn

31 downloads per month
Used in 2 crates

MIT and GPL-3.0+

26KB
632 lines

documentation Crates.io Crates.io (recent)

pgnparse

Parse PGN to Rust struct ( headers as hash map, main line moves as san, uci, fen, epd records ) or to JSON. All lichess variants are supported. Custom starting position using FEN header is supported. Create a book of parsed pgns.

Usage

extern crate env_logger;

use pgnparse::parser::*;

use log::{info};

fn main(){
	env_logger::init();

	let pgn = r#"[FEN "8/8/8/8/8/7k/8/7K w - - 0 1"]
[White "White"]
[Black "Black"]
[Variant "Atomic"]

1. Kh2 Kg2
"#;

	info!("parsing pgn");
	
	let result = parse_pgn_to_rust_struct(pgn);
	
	println!("rust struct = {:?}", result);
	
	let result = parse_pgn_to_json_string(pgn);
	
	println!("json = {}", result);
}

Advanced

extern crate env_logger;

use pgnparse::parser::*;

fn main(){
	env_logger::init();

	let mut book = Book::new().me("chesshyperbot");

	book.parse("test.pgn");

	let pos = book.positions.get("rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq -");

	println!("pos for epd = {:?}", pos);

	if let Some(pos) = pos {
		let m = pos.get_random_weighted_by_plays();

		println!("random weighted by plays = {:?} , plays = {}", m, m.unwrap().plays());

		let m = pos.get_random_weighted_by_perf();

		println!("random weighted by perf = {:?} , perf = {}", m, m.unwrap().perf());

		let m = pos.get_random_mixed(50);

		println!("random mixed = {:?}", m);
	}
}

Logging

export RUST_LOG=info
# or
export RUST_LOG=debug

Dependencies

~3.5–5MB
~110K SLoC