build.rs

use clap::CommandFactory;
use clap_mangen::Man;
use std::env;
use std::path::Path;

#[path = "src/cli.rs"]
mod cli;

macro_rules! generate_manpage {
    ($struct:ident) => {
        let target_dir = env::var("CARGO_TARGET_DIR").unwrap_or("target".to_string());
        let output_dir = Path::new(&target_dir).join(env::var("PROFILE").unwrap());

        let cmd = cli::$struct::command();
        let cmd_name = format!("{}.1", cmd.get_name());
        let man = Man::new(cmd);
        let mut buffer: Vec<u8> = Default::default();
        man.render(&mut buffer)?;
        std::fs::write(output_dir.join(cmd_name), buffer)?;
    };
}

fn main() -> std::io::Result<()> {
    generate_manpage!(GitMob);
    generate_manpage!(GitSolo);
    generate_manpage!(GitAddCoauthor);
    generate_manpage!(GitEditCoauthor);
    generate_manpage!(GitDeleteCoauthor);

    Ok(())
}