artik-sdk/examples/commandline.js

SDK for developing applications for Samsung's ARTIK platform

var readline = require('readline');

function CommandLine(commands) {
	this.commands = commands;
	this.rdLine = readline.createInterface({
	    input: process.stdin,
	    output: process.stdout,
	    terminal: false
	});
}

CommandLine.prototype.execute_command = function(line) {
	var argv = line.split(' ');
	var command = argv[0];
	var args = argv.slice(1);

	var cmd = this.commands.find(function(item) { return item.command == command });
	var help = function() {
		console.log(cmd.command + " - " + cmd.description);
		console.log(cmd.doc);
	};

	if (cmd) {
		cmd.handler(args, help);
	} else if (command == "help") {
		this.display_help(args[0]);
	} else {
		console.log("The " + command + " command does not exist.");
	}
};

CommandLine.prototype.display_help = function(command) {
	if (command) {
		var cmd = this.commands.find(function(item) { return item.command == command });

		if (cmd) {
			console.log(cmd.command + " - " + cmd.description);
			console.log(cmd.doc);
		} else {
			console.log("The " + args[0] + " command does not exist.");
			console.log("Use the help command for help.");
		}
	} else {
		this.commands.forEach(function (e) { console.log(e.command + " - " + e.description)});
	    console.log("help [command] - for more details on a command");
	}
};

CommandLine.prototype.process = function() {
	this.display_help();
	this.rdLine.on('line', this.execute_command.bind(this));
};

CommandLine.prototype.read_line = function(Callback) {
	this.rdLine.once('line', Callback);
}

module.exports = CommandLine;