uuid-v4-cli 0.3.0

A CLI tool to generate UUID V4
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mod lib;

use clap::Parser;
use std::ffi::CString;

#[derive(Parser, Default)]
#[clap(version, about, long_about = None)]
pub struct Opts {
    /// Show with hyphens
    #[clap(short = 'H', long, group = "format")]
    pub hyphenated: bool,

    /// Show as a urn
    #[clap(long, group = "format")]
    pub urn: bool,

    /// Show as uppercase (default: lowercase)
    #[clap(short, long)]
    pub uppercase: bool,
}

fn new(opts: Opts) -> String {
    let output_c_str =
        unsafe { CString::from_raw(lib::generate(opts.hyphenated, opts.urn, opts.uppercase)) };
    output_c_str.to_str().unwrap().to_string()
}

fn main() {
    let cli = Opts::parse();
    println!("{}", new(cli));
}

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

    #[test]
    fn test_simple_uuid() {
        assert_eq!(new(Opts::default()).len(), 32);
    }
    #[test]
    fn test_hyphenated_uuid() {
        assert_eq!(
            new(Opts {
                hyphenated: true,
                ..Default::default()
            })
            .len(),
            36
        );
    }
    #[test]
    fn test_urn_uuid() {
        assert_eq!(
            new(Opts {
                urn: true,
                ..Default::default()
            })
            .len(),
            45
        );
    }
}