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main.js
package.json
main.js
var args = require('./lib/args'); var help = require('./lib/help'); var encode = require('./lib/encode'); var commands = require('./lib/commands'); var connection = require('./lib/connection'); var options = args(process.argv); if (options.help) { help(); process.exit(0); } else { if (!options.port || options.port.length === 0) { process.stderr.write('Port is not set. Try using --help.\n'); process.exit(1); } if (!options.command || options.command.length === 0) { process.stderr.write('Command is not set. Try using --help.\n'); process.exit(1); } var name = options.command[0]; var command = commands[name.toUpperCase()]; if (!command) { process.stderr.write('The given command ' + name.toLowerCase() + ' does not exist. Try using --help.\n'); process.exit(1); } // Parsed command arguments. var parsed = [], value; if (command.encode === encode.byte) { if (options.command.length < 2) { process.stderr.write('The given command ' + name.toLowerCase() + ' expects argument. Try using --help.\n'); process.exit(1); } value = parseInt(options.command[1], 10); if (isNaN(value) || value < 0 || value > 255) { process.stderr.write('The given command ' + name.toLowerCase() + ' expects byte (0-255) as the argument. Try using --help.\n'); process.exit(1); } parsed.push(value); } if (command.encode === encode.control) { if (options.command.length < 3) { process.stderr.write('The given command ' + name.toLowerCase() + ' expects 2 arguments. Try using --help.\n'); process.exit(1); } value = parseInt(options.command[1], 10); if (isNaN(value) || value < 0 || value > 255) { process.stderr.write('The given command ' + name.toLowerCase() + ' expects line index (0-4) as the first argument. Try using --help.\n'); process.exit(1); } parsed.push(value); try { value = JSON.parse(options.command[2]); } catch (err) { process.stderr.write('The given command ' + name.toLowerCase() + ' expects valid JSON as the second argument. Try using --help.\n'); process.exit(1); } parsed.push(value); } connection.open(options.port[0]).then(function(queue) { return queue.run(command, parsed).then(function(output) { // Just write the command output // and exit. if (typeof output === 'object') { console.log(JSON.stringify(output, null, 2)); } else { console.log(output); } process.exit(0); }); }).catch(function(err) { process.stderr.write(err.stack + '\n'); process.exit(1); }); }
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