object

func ExtractHeaderAndPayload ¶

func ExtractHeaderAndPayload(data []byte) (*object.Object, []byte, error)

ExtractHeaderAndPayload extracts the header of an object from the given byte slice and also returns payload prefix.

func GetAttribute ¶

func GetAttribute(hdr object.Object, attr string) string

GetAttribute looks up for specified attribute in the given object header. Returns empty string if the attribute is missing.

GetIntAttribute ignores all attribute values except the first.

func GetIndexAttribute ¶

func GetIndexAttribute(hdr object.Object, attr string) (int, error)

GetIndexAttribute looks up for specified index attribute in the given object header. Returns -1 if the attribute is missing.

GetIndexAttribute ignores all attribute values except the first.

Note that if attribute exists but negative, GetIndexAttribute returns error.

func GetIntAttribute ¶

func GetIntAttribute(hdr object.Object, attr string) (int, error)

GetIntAttribute looks up for specified int attribute in the given object header. Returns ErrAttributeNotFound if the attribute is missing.

GetIntAttribute ignores all attribute values except the first.

func ReadHeaderPrefix ¶

func ReadHeaderPrefix(r io.Reader) (*object.Object, []byte, error)

ReadHeaderPrefix reads up to object.MaxHeaderLen bytes and extracts header and the payload prefix.

func SetAttribute ¶

func SetAttribute(dst *object.Object, attr, val string)

SetAttribute sets value for the object attribute. If the attribute already exists, SetAttribute overwrites its value.

func SetIntAttribute ¶

func SetIntAttribute(dst *object.Object, attr string, val int)

SetIntAttribute sets int value for the object attribute. If the attribute already exists, SetIntAttribute overwrites its value.

func WriteWithoutPayload ¶

func WriteWithoutPayload(w io.Writer, obj object.Object) error

WriteWithoutPayload writes the object header to the given writer without the payload.