react-native-macos/local-cli/cli.js

/**
 * Copyright (c) 2015-present, Facebook, Inc.
 * All rights reserved.
 *
 * This source code is licensed under the BSD-style license found in the
 * LICENSE file in the root directory of this source tree. An additional grant
 * of patent rights can be found in the PATENTS file in the same directory.
 */
'use strict';

var bundle = require('../private-cli/src/bundle/bundle');
var Config = require('../private-cli/src/util/Config');
var fs = require('fs');
var generate = require('../private-cli/src/generate/generate');
var library = require('../private-cli/src/library/library');
var path = require('path');
var runAndroid = require('../private-cli/src/runAndroid/runAndroid');
var server = require('../private-cli/src/server/server');
var TerminalAdapter = require('yeoman-environment/lib/adapter.js');
var yeoman = require('yeoman-environment');

var availableCommands = {
  'start': [server, 'starts the webserver'],
  'bundle': [bundle, 'builds the javascript bundle for offline use'],
  'new-library': [library, 'generates a native library bridge'],
  'android': [generate, 'generates an Android project for your app'],
  'run-android': [runAndroid, 'builds your app and starts it on a connected Android emulator or device']
};

/**
 * Parses the command line and runs a command of the CLI.
 */
function run() {
  var args = process.argv.slice(2);
  if (args.length === 0) {
    printUsage();
  }

  var config = Config.get(__dirname);
  switch (args[0]) {
    case 'start': return server(args, config).done();
    case 'bundle': return bundle(args, config).done();
    case 'new-library': return library(args, config).done();
    case 'init': return printInitWarning();
    case 'run-android': return runAndroid(args, config).done();
    case 'android':
      generate(
        [
          '--platform', 'android',
          '--project-path', process.cwd(),
          '--project-name', JSON.parse(
            fs.readFileSync('package.json', 'utf8')
          ).name
        ],
        config
      ).done();
      break;
    default:
      console.error('Command `%s` unrecognized', args[0]);
      printUsage();
  }
}

function printUsage() {
  console.log([
    'Usage: react-native <command>',
    '',
    'Commands:'
  ].concat(
    Object.keys(availableCommands).map(function(name){
      return name + ':\t' + availableCommands[name][1];
    }).join('\n')
  ));
  process.exit(1);
}

// The user should never get here because projects are inited by
// using `react-native-cli` from outside a project directory.
function printInitWarning() {
  console.log([
    'Looks like React Native project already exists in the current',
    'folder. Run this command from a different folder or remove node_modules/react-native'
  ].join('\n'));
  process.exit(1);
}

class CreateSuppressingTerminalAdapter extends TerminalAdapter {
  constructor() {
    super();
    // suppres 'create' output generated by yeoman
    this.log.create = function() {};
  }
}

/**
 * Creates the template for a React Native project given the provided
 * parameters:
 *   - projectDir: templates will be copied here.
 *   - argsOrName: project name or full list of custom arguments to pass to the
 *                 generator.
 */
function init(projectDir, argsOrName) {
  console.log('Setting up new React Native app in ' + projectDir);
  var env = yeoman.createEnv(
    undefined,
    undefined,
    new CreateSuppressingTerminalAdapter()
  );

  env.register(
    require.resolve(path.join(__dirname, 'generator')),
    'react:app'
  );

  // argv is for instance
  // ['node', 'react-native', 'init', 'AwesomeApp', '--verbose']
  // args should be ['AwesomeApp', '--verbose']
  var args = Array.isArray(argsOrName)
    ? argsOrName
    : [argsOrName].concat(process.argv.slice(4));

  var generator = env.create('react:app', {args: args});
  generator.destinationRoot(projectDir);
  generator.run();
}

if (require.main === module) {
  run();
}

module.exports = {
  run: run,
  init: init,
};