hamlib-client 1.1.0

Simple library that implements a client for Hamlib (rigctld)
Documentation 
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/*
 * Copyright (C) 2024 Luca Cireddu <sardylan@gmail.com>
 *
 * This program is free software: you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation, version 3.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License along with
 * this program. If not, see <https://www.gnu.org/licenses/>.
 *
 */

use crate::error::RigCtlError;
use crate::mode::Mode;
use crate::vfo::VFO;
use lazy_static::lazy_static;
use regex::Regex;
use std::fmt::{Display, Formatter};
use std::str::FromStr;

#[derive(Debug, PartialEq)]
pub struct Response {
    pub query_vfo: VFO,
    pub mode: Mode,
    pub passband: u64,
}

impl Display for Response {
    fn fmt(&self, f: &mut Formatter<'_>) -> std::fmt::Result {
        write!(f, "Query VFO: {} - Mode: {} - Passband: {}", self.query_vfo, self.mode, self.passband)
    }
}

pub fn parse(line: &str) -> Result<Response, RigCtlError> {
    lazy_static! {
        static ref RE: Regex = Regex::new(r"^get_mode: (?P<query_vfo>[a-zA-Z0-9]+)\|Mode: (?P<mode>[a-zA-Z0-9]+)\|Passband: (?P<passband>[0-9]+)\|RPRT 0$").unwrap();
    }

    let captures = RE.captures(&line).ok_or(RigCtlError::ResponseParsing("Unable to capture groups".to_string()))?;
    log::trace!("Captures: {:?}", &captures);

    let query_vfo = captures.name("query_vfo").ok_or(RigCtlError::ResponseParsing("Invalid query_vfo group".to_string()))?.as_str();
    let mode = captures.name("mode").ok_or(RigCtlError::ResponseParsing("Invalid mode group".to_string()))?.as_str();
    let passband = captures.name("passband").ok_or(RigCtlError::ResponseParsing("Invalid passband group".to_string()))?.as_str();

    Ok(Response {
        query_vfo: VFO::from_str(&query_vfo)?,
        mode: Mode::from_str(&mode)?,
        passband: passband.parse::<u64>().map_err(|e| { RigCtlError::ResponseParsing(e.to_string()) })?,
    })
}

#[cfg(test)]
mod tests {
    use super::*;

    #[test]
    fn test_get_mode() {
        let input = r"get_mode: None|Mode: PKTUSB|Passband: 2400|RPRT 0";
        let expected = Response { query_vfo: VFO::None, mode: Mode::PKTUSB, passband: 2400u64 };
        let actual = parse(input);
        assert!(actual.is_ok());
        assert_eq!(actual.unwrap(), expected);
    }
}