Function DataFormat

chunker/chunk.go:402–413

DataFormat returns a file's data format (RDF, JSON, or unknown) based on the filename or the user-provided format option. The file extension has precedence.

(filename string, format string)

// DataFormat returns a file's data format (RDF, JSON, or unknown) based on the filename
// or the user-provided format option. The file extension has precedence.
func DataFormat(filename string, format string) InputFormat {
	format = strings.ToLower(format)
	filename = strings.TrimSuffix(strings.ToLower(filename), ".gz")
	switch {
	case strings.HasSuffix(filename, ".rdf") || format == "rdf":
		return RdfFormat
	case strings.HasSuffix(filename, ".json") || format == "json":
		return JsonFormat
	default:
		return UnknownFormat
	}
}