use regex::Regex;
use std::{
    fs::{self, File},
    io::{Read, Seek, SeekFrom},
};

fn main() {
    let maps_regex = Regex::new(r"([\w]+)-([\w]+) r").unwrap();
    let maps = fs::read_to_string("/proc/self/maps").unwrap();

    let mut mem = File::open("/proc/self/mem").unwrap();

    for map in maps.lines() {
        let captures = maps_regex.captures(&map).unwrap();

        let start_adress: usize = usize::from_str_radix(&captures[1], 16).unwrap();
        let end_adress: usize = usize::from_str_radix(&captures[2], 16).unwrap();

        mem.seek(SeekFrom::Start(start_adress as u64)).unwrap();

        let mut memory = vec![0; end_adress - start_adress];
        mem.read_exact(&mut memory).unwrap();

        let string: String = String::from_utf8_lossy(&memory)
            .chars()
            .filter(|&c| c != '�')
            .collect();

        println!("{}", string);
    }
}