'use strict'; const program = require('commander'); const colors = require('colors'); program.on('--help', () => { console.log('') console.log(' Examples:'.blue) console.log('') console.log(' $ xmysql -u username -p password -d databaseSchema'.blue) console.log('') }) program .version('0.0.2') .option('-h, --host ', 'hostname') .option('-d, --database ', 'database schema name') .option('-u, --user ', 'username of database / root by default') .option('-p, --password ', 'password of database / empty by default') .option('-n, --portNumber ', 'port number : 3000 by default') .parse(process.argv) function paintHelp(txt) { return colors.magenta(txt) //display the help text in a color } function processInvalidArguments(program) { let err = ''; if (!program.password) { err += 'Error: password for database is missing\n'; } if (!program.database) { err += 'Error: database name is missing\n'; } if (err !== '') { program.outputHelp(paintHelp) console.log(err.red) } } exports.handle = program => { /**************** START : default values ****************/ program.portNumber = program.portNumber || 3000; program.user = program.user || 'root'; program.password = program.password || ''; program.host = program.host || 'localhost'; program.connectionLimit = 10; if (program.host === 'localhost' || program.host === '127.0.0.1') { program.dynamic = 1 } //console.log(program.rawArgs); /**************** END : default values ****************/ if (program.database && program.host && program.user) { console.log('Starting server at:', 'http://'+program.host + ':' + program.portNumber) } else { processInvalidArguments(program) process.exit(1) } };