Function ParseOptionalBody

internal/cmdutil/json.go:17–39

ParseOptionalBody parses --data JSON for methods that accept a request body. Supports stdin (-), @file, @@-escape, and single-quote stripping via ResolveInput. Returns (nil, nil) if the method has no body or data is empty.

(httpMethod, data string, stdin io.Reader, fileIO fileio.FileIO)

// Supports stdin (-), @file, @@-escape, and single-quote stripping via ResolveInput.
// Returns (nil, nil) if the method has no body or data is empty.
func ParseOptionalBody(httpMethod, data string, stdin io.Reader, fileIO fileio.FileIO) (interface{}, error) {
	switch httpMethod {
	case "POST", "PUT", "PATCH", "DELETE":
	default:
		return nil, nil
	}
	resolved, err := ResolveInput(data, stdin, fileIO)
	if err != nil {
		return nil, errs.NewValidationError(errs.SubtypeInvalidArgument, "--data: %s", err).
			WithParam("--data").
			WithCause(err)
	}
	if resolved == "" {
		return nil, nil
	}
	var body interface{}
	if err := json.Unmarshal([]byte(resolved), &body); err != nil {
		return nil, errs.NewValidationError(errs.SubtypeInvalidArgument, "--data invalid JSON format").
			WithParam("--data").
			WithCause(err)
	}
	return body, nil
}

// ParseJSONMap parses a JSON string into a map. Returns an empty (never nil) map
// for empty input or the JSON literal null, so callers can always overlay onto