func initConfig()

in cmd/hub/cmd/root.go [93:150]
52 lines of code
17 McCabe index (conditional complexity)

func initConfig() {
	home, err := homedir.Dir()
	if err != nil {
		util.Warn("Unable to determine HOME directory: %v", err)
	}
	if config.ConfigFile != "" {
		// Use config file from the flag.
		viper.SetConfigFile(config.ConfigFile)
	} else {
		if err == nil {
			// Search config in home directory with name ".hub-config" (without extension).
			viper.AddConfigPath(home)
			viper.SetConfigName(".hub-config")
		}
	}
	if config.CacheFile == "" && err == nil {
		config.CacheFile = fmt.Sprintf("%s/.hub-cache.yaml", home)
	}

	viper.SetEnvPrefix("hub")
	viper.SetEnvKeyReplacer(strings.NewReplacer("-", "_", ".", "_"))
	viper.AutomaticEnv() // read in environment variables that match

	// If a config file is found, read it in.
	if err = viper.ReadInConfig(); err == nil {
		if config.Verbose {
			log.Printf("Using config file %s", viper.ConfigFileUsed())
		}
	}
	if viper.GetBool("force") {
		config.Force = true
	}
	if viper.GetBool("debug") {
		config.Debug = true
	}
	if viper.GetBool("trace") {
		config.Trace = true
	}
	if tty := viper.GetString("tty"); tty != "" {
		config.TtyMode = tty
	}
	if pass := viper.GetString("crypto-password"); pass != "" {
		config.CryptoPassword = pass
	}
	if key := viper.GetString("crypto-aws-kms-key-arn"); key != "" {
		config.CryptoAwsKmsKeyArn = key
	}
	if key := viper.GetString("crypto-azure-keyvault-key-id"); key != "" {
		config.CryptoAzureKeyVaultKeyId = key
	}
	if key := viper.GetString("crypto-gcp-kms-key-name"); key != "" {
		config.CryptoGcpKmsKeyName = key
	}

	for _, initializer := range initializers {
		initializer()
	}
}