adventofcode2024/day_04/src/main.rs

// https://adventofcode.com/2024/day/4
//
// Run command: cargo run ./input.txt

use std::env;
use std::error::Error;
use std::fs::File;

mod crossword;

use crate::crossword::Crossword;

fn main() -> Result<(), Box<dyn Error>> {
    // Handle command input
    let args: Vec<String> = env::args().collect();
    if args.len() != 2 {
        panic!(
            "{} must be run with a single argument of files name!",
            &args[0]
        )
    }
    let input_file_string = &args[1];

    let crossword = Crossword::new(File::open(input_file_string)?)?;

    println!("{}", crossword);
    println!("n:  {}", crossword.n(3,3).take(4));
    println!("ne: {}", crossword.ne(3,3).take(4));
    println!("e:  {}", crossword.e(3,3).take(4));
    println!("se: {}", crossword.se(3,3).take(4));
    println!("s:  {}", crossword.s(3,3).take(4));
    println!("sw: {}", crossword.sw(3,3).take(4));
    println!("w:  {}", crossword.w(3,3).take(4));
    println!("nw: {}", crossword.nw(3,3).take(4));

    Ok(())
}