Method defaultDecoderConfig

viper.go:976–1000

defaultDecoderConfig returns default mapstructure.DecoderConfig with support of time.Duration values & string slices.

(output any, opts ...DecoderConfigOption)

// defaultDecoderConfig returns default mapstructure.DecoderConfig with support
// of time.Duration values & string slices.
func (v *Viper) defaultDecoderConfig(output any, opts ...DecoderConfigOption) *mapstructure.DecoderConfig {
	decodeHook := v.decodeHook
	if decodeHook == nil {
		decodeHook = mapstructure.ComposeDecodeHookFunc(
			mapstructure.StringToTimeDurationHookFunc(),
			// mapstructure.StringToSliceHookFunc(","),
			stringToWeakSliceHookFunc(","),
		)
	}

	c := &mapstructure.DecoderConfig{
		Metadata:         nil,
		WeaklyTypedInput: true,
		DecodeHook:       decodeHook,
	}

	for _, opt := range opts {
		opt(c)
	}

	// Do not allow overwriting the output
	c.Result = output

	return c
}

// As of mapstructure v2.0.0 StringToSliceHookFunc checks if the return type is a string slice.
// This function removes that check.