// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.

#![feature(slicing_syntax, box_syntax)]

extern crate regex;

extern crate rustdoc;

use std::os;
use subcommand::Subcommand;
use term::Term;

macro_rules! try (
    ($expr:expr) => ({
        use error;
        match $expr {
            Ok(val) => val,
            Err(err) => return Err(error::FromError::from_err(err))
        }
    })
);

mod term;
mod error;
mod book;

mod subcommand;
mod help;
mod build;
mod serve;
mod test;

mod css;

#[cfg(not(test))] // thanks #12327
fn main() {
    let mut term = Term::new();
    let cmd = os::args();

    if cmd.len() < 1 {
        help::usage()
    } else {
        match subcommand::parse_name(&cmd[1][]) {
            Some(mut subcmd) => {
                match subcmd.parse_args(cmd.tail()) {
                    Ok(_) => {
                        match subcmd.execute(&mut term) {
                            Ok(_) => (),
                            Err(err) => {
                                term.err(&format!("error: {}", err.description())[]);
                                err.detail().map(|detail| {
                                    term.err(&format!("detail: {}", detail)[]);
                                });
                            }
                        }
                    }
                    Err(err) => {
                        println!("{}", err.description());
                        println!("");
                        subcmd.usage();
                    }
                }
            }
            None => {
                println!("Unrecognized command '{}'.", cmd[1]);
                println!("");
                help::usage();
            }
        }
    }
}