mdcat 0.22.1

// Copyright 2020 Sebastian Wiesner <sebastian@swsnr.de>

// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

use std::io::{Error, ErrorKind, Result};
use std::path::Path;
use std::process::Command;

mod mdcat {
    include!("src/bin/mdcat/args.rs");
}

fn gen_completions<P: AsRef<Path>>(out_dir: P) {
    use clap::*;
    let mut a = mdcat::app("80");

    let completions = out_dir.as_ref().join("completions");
    std::fs::create_dir_all(&completions).expect("Failed to create $OUT_DIR/completions");

    for shell in &[Shell::Bash, Shell::Zsh, Shell::Fish] {
        a.gen_completions("mdcat", *shell, &completions);
    }
}

fn build_manpage<P: AsRef<Path>>(out_dir: P) -> Result<()> {
    let target_file = out_dir.as_ref().join("mdcat.1");

    let mut command = Command::new("asciidoctor");
    command
        .args(&["-b", "manpage", "-a", "reproducible"])
        .arg("-o")
        .arg(target_file)
        .arg("mdcat.1.adoc");
    let result = command.spawn()?.wait()?;

    if result.success() {
        Ok(())
    } else {
        Err(Error::new(
            ErrorKind::Other,
            format!("{:?} failed with exit code: {:?}", command, result.code()),
        ))
    }
}

fn main() {
    let out_dir = std::env::var_os("OUT_DIR").expect("OUT_DIR not set");

    println!("cargo:rerun-if-changed=src/bin/mdcat/args.rs");
    gen_completions(&out_dir);

    println!("cargo:rerun-if-changed=mdcat.1.adoc");
    if let Err(error) = build_manpage(&out_dir) {
        println!("cargo:warning=Failed to build manpage: {}", error);
    }
}