CA formats parsers

Parsing pattern files for Conway's Game of Life.

The parsers read a string and return an iterator of coordinates of living cells.

Supported formats

Example

Reading from a string:

```rust use ca_formats::rle::Rle;

const GLIDER: &str = r"#N Glider

O Richard K. Guy

C The smallest, most common, and first discovered spaceship. Diagonal, has period 4 and speed c/4.

C www.conwaylife.com/wiki/index.php?title=Glider

x = 3, y = 3, rule = B3/S23 bob$2bo$3o!";

let glider = Rle::new(GLIDER).unwrap(); asserteq!(glider.headerdata().unwrap().x, 3); asserteq!(glider.headerdata().unwrap().y, 3); asserteq!(glider.headerdata().unwrap().rule, Some(String::from("B3/S23")));

let cells = glider.map(|cell| cell.unwrap().position).collect::>(); assert_eq!(cells, vec![(1, 0), (2, 1), (0, 2), (1, 2), (2, 2)]); ```

Reading from a file:

```rust use std::fs::File; use ca_formats::rle::Rle;

let file = File::open("tests/sirrobin.rle").unwrap(); let sirrobin = Rle::newfromfile(file).unwrap();

assert_eq!(sirrobin.count(), 282); ```