func ConfigTool()

in config/config_tool.go [43:101]
46 lines of code
9 McCabe index (conditional complexity)

func ConfigTool(configMap ConfigMap) error {
	flag := flag.NewFlagSet("config", flag.ExitOnError)
	var helpFlag bool
	var dumpFlag bool
	var removeFlag bool

	flag.Usage = printConfigToolUsage

	flag.BoolVar(&helpFlag, "h", false, "show this help")
	flag.BoolVar(&helpFlag, "help", false, "show this help")
	flag.BoolVar(&dumpFlag, "dump", false, "dump the config file")
	flag.BoolVar(&dumpFlag, "d", false, "dump the config file")
	flag.BoolVar(&removeFlag, "remove", false, "remove config values")
	flag.BoolVar(&removeFlag, "r", false, "remove config values")

	err := flag.Parse(os.Args[1:])
	if err != nil {
		return err
	}

	if helpFlag {
		flag.Usage()
		return nil
	}

	if dumpFlag {
		dumped := configMap.Flatten()
		for k, v := range dumped {
			fmt.Printf("%s=%s\n", k, v)
		}
		return nil
	}

	// Get the input string from the remaining command line arguments
	input := flag.Args()

	if len(input) == 0 {
		flag.Usage()
		return nil
	}

	var cErr error
	noAssigns := inputWithoutAssigns(input)

	if removeFlag {
		cErr = removeInConfigJSON(configMap, input)
	} else if noAssigns {
		// print the values and return
		return printValues(configMap, input)
	} else {
		cErr = insertInConfigJSON(configMap, input)
	}

	if cErr != nil {
		return cErr
	}

	return configMap.SaveConfig()
}