afetch 0.0.7

A CLI system information tool written in Rust.
Documentation 
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use std::collections::HashMap;
use std::process::Command;

pub const fn div_mod(dividend: u64, divisor: u64) -> (u64, u64) {
    (dividend / divisor, dividend % divisor)
}

pub fn return_str_from_command(command: &mut Command) -> String {
    match command.output() {
        Ok(output) => String::from_utf8_lossy(&output.stdout).to_string(),
        Err(_) => String::default(),
    }
}

pub fn get_file_content_without_lines(file_path: &str) -> String {
    std::fs::read_to_string(file_path)
        .unwrap_or_default()
        .replace('\n', "")
}

pub fn get_file_content(file_path: &str) -> String {
    std::fs::read_to_string(file_path).unwrap_or_default()
}

pub fn command_exist(program: &str) -> bool {
    which::which(program).is_ok()
}

pub fn format_time(time_to_format: u64, language: &HashMap<&'static str, &'static str>) -> String {
    let (minutes, seconds): (u64, u64) = div_mod(time_to_format, 60);
    let (hours, minutes): (u64, u64) = div_mod(minutes, 60);
    let (days, hours): (u64, u64) = div_mod(hours, 24);
    let mut time_formatted: Vec<String> = Vec::new();

    match days {
        0 => (),
        1 => time_formatted.push(format!("{} {}", days, language["day"])),
        _ => time_formatted.push(format!("{} {}", days, language["days"])),
    }

    match hours {
        0 => (),
        1 => time_formatted.push(format!("{} {}", hours, language["hour"])),
        _ => time_formatted.push(format!("{} {}", hours, language["hours"])),
    }

    match minutes {
        0 => (),
        1 => time_formatted.push(format!("{} {}", minutes, language["minute"])),
        _ => time_formatted.push(format!("{} {}", minutes, language["minutes"])),
    }

    if seconds > 0 && minutes == 0 && hours == 0 {
        match minutes {
            0 => (),
            1 => time_formatted.push(format!("{} {}", seconds, language["second"])),
            _ => time_formatted.push(format!("{} {}", seconds, language["seconds"])),
        }
    }
    time_formatted.join(", ")
}

// Based on the human_bytes library of Forkbomb9: https://gitlab.com/forkbomb9/human_bytes-rs
pub fn convert_to_readable_unity<T: Into<f64>>(size: T) -> String {
    const SUFFIX: [&str; 9] = ["B", "kB", "MB", "GB", "TB", "PB", "EB", "ZB", "YB"];
    let size_converted: f64 = size.into();
    if size_converted <= 0.0_f64 {
        return "0 B".to_owned();
    }
    let base: f64 = size_converted.log10() / 1024_f64.log10();
    let mut result: String = format!("{:.1}", 1024_f64.powf(base - base.floor()))
        .trim_end_matches(".0")
        .to_owned();
    result.push_str(SUFFIX[base.floor() as usize]);
    result
}

pub fn env_exist(env_var: &str) -> bool {
    std::env::var(env_var).is_ok()
}

pub fn get_env(env_var: &str) -> String {
    std::env::var(env_var).unwrap_or_default()
}