/**

 * parameter-lister (Rust implementation)

 * Copyright © 2016 Vojtěch Král <vojtech@kral.hk>

 *

 * This program is free software: you can redistribute it and/or modify

 * it under the terms of the GNU General Public License as published by

 * the Free Software Foundation, either version 3 of the License, or

 * (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program. If not, see <http://www.gnu.org/licenses/>.

 */

use std::collections::HashMap;

use std::env;

use std::io;

mod outputmodule;

mod terminalmodule;

mod xmlmodule;

use outputmodule::OutputModule;

use terminalmodule::TerminalModule;

use xmlmodule::XMLModule;

static ENV_OUTPUT_MODULE_NAME: &'static str = "PARAMETER_LISTER_OUTPUT";

fn main() {

	let mut modules: HashMap<_, Box<OutputModule>> = HashMap::new();

	modules.insert(terminalmodule::MOD_NAME, Box::new(TerminalModule::new()));

	modules.insert(xmlmodule::MOD_NAME, Box::new(XMLModule::new()));

	let module_name = env::var(ENV_OUTPUT_MODULE_NAME).unwrap_or(String::from("terminal"));

	let module = modules.get(&*module_name).expect(&*format!("No such module: {}", module_name));

	match module.process(&mut io::stdout(), env::args().collect()) {

		Ok(()) => {},

		Err(msg) => panic!("Error while processing output with module {}: {}", module_name, msg),

	}

}