export-data.rs

use std::env::args;
use std::fs::File;
use std::io::{BufRead, BufReader};
use std::str::FromStr;

fn main() {
    let mut args = args();
    if args.len() == 3 {
        args.next();
        let interval = u32::from_str(&args.next().unwrap()).unwrap();
        let file = File::open(&args.next().unwrap()).unwrap();
        let file = BufReader::new(file);

        let mut end = 0;
        for line in file.lines() {
            if let Ok(s) = line {
                let mut s = s.split_whitespace().collect::<Vec<&str>>();
                let data = s[2];
                s = s[0].split('-').collect();
                let start = u32::from_str(s[0]).unwrap();

                if start - end > interval {
                    print!("\n{}", data);
                } else {
                    print!("{}", data);
                }

                end = u32::from_str(s[1]).unwrap();
            }
        }
    }
    println!();
}