Function _printHelp

lib/commands/help.js:31–89

(commandOptions, rawArgs)

  },

  _printHelp(commandOptions, rawArgs) {
    let rootCommand = new RootCommand({
      ui: this.ui,
      project: this.project,
      commands: this.commands,
      tasks: this.tasks,
    });

    if (rawArgs.length === 0) {
      this.ui.writeLine(rootCommand.printBasicHelp(commandOptions));
      // Display usage for all commands.
      this.ui.writeLine('Available commands in ember-cli:');
      this.ui.writeLine('');

      Object.keys(this.commands).forEach(function (commandName) {
        this._printHelpForCommand(commandName, false, commandOptions);
      }, this);

      if (this.project.eachAddonCommand) {
        this.project.eachAddonCommand((addonName, commands) => {
          this.commands = commands;

          this.ui.writeLine('');
          this.ui.writeLine(`Available commands from ${addonName}:`);

          Object.keys(this.commands).forEach(function (commandName) {
            this._printHelpForCommand(commandName, false, commandOptions);
          }, this);
        });
      }
    } else {
      // If args were passed to the help command,
      // attempt to look up the command for each of them.

      this.ui.writeLine('Requested ember-cli commands:');
      this.ui.writeLine('');

      if (this.project.eachAddonCommand) {
        this.project.eachAddonCommand((addonName, commands) => {
          Object.assign(this.commands, commands);
        });
      }

      let multipleCommands = [GenerateCommand.prototype.name].concat(GenerateCommand.prototype.aliases);
      if (multipleCommands.indexOf(rawArgs[0]) > -1) {
        let command = rawArgs.shift();
        if (rawArgs.length > 0) {
          commandOptions.rawArgs = rawArgs;
        }
        rawArgs = [command];
      }

      // Iterate through each arg beyond the initial 'help' command,
      // and try to display usage instructions.
      rawArgs.forEach(function (commandName) {
        this._printHelpForCommand(commandName, true, commandOptions);
      }, this);
    }