Better parsers

use std::str::FromStr;

use nom::IResult;

use nom::branch::alt;

use nom::bytes::complete::tag;

// use nom::branch::alt;

use nom::character::complete::{not_line_ending, digit1};

use nom::number::complete::double;

use nom::bytes::complete::{tag, take_until};

use nom::multi::many_m_n;

use nom::combinator::map_res;

// Parser related functions

    nom::multi::many0(nom::bytes::complete::tag(" "))(s)

}

fn parse_integer(input: &str) -> IResult<&str, u32> {

    map_res(digit1, u32::from_str)(input.trim_start())

}

fn parse_float(input: &str) -> IResult<&str, f64> {

    double(input.trim_start())

}

// Parses header num + field lines

pub fn head_field_parser(s: &str) -> IResult<&str, Vec<u32>> {

    many_m_n(1, 2, parse_integer)(s)

}

pub fn box_field_parser(s: &str) -> IResult<&str, Vec<f64>> {

    many_m_n(2, 3, parse_float)(s)

}

// Parses each line of the input

pub fn line_parser(s: &str) -> IResult<&str, &str> {

    not_line_ending(s)

}

// Should split the file at the first body keyword encountered

// TODO: add more keywords when POC works

pub fn header_parser(data_content: &str) -> IResult<&str, &str> {