Enum UnpackedSize

pub enum UnpackedSize {
    ReadFromHeader,
    ReadHeaderButUseProvided(Option<u64>),
    UseProvided(Option<u64>),
}

Alternatives for defining the unpacked size of the decoded data.

Variants

ReadFromHeader

Assume that the 8 bytes used to specify the unpacked size are present in the header. If the bytes are 0xFFFF_FFFF_FFFF_FFFF, assume that there is an end-of-payload marker in the file. If not, read the 8 bytes as a little-endian encoded u64.

ReadHeaderButUseProvided(Option<u64>)

Assume that there are 8 bytes representing the unpacked size present in the header. Read it, but ignore it and use the provided value instead. If the provided value is None, assume that there is an end-of-payload marker in the file. Note that this is a non-standard way of reading LZMA data, but is used by certain libraries such as OpenCTM.

UseProvided(Option<u64>)

Assume that the 8 bytes typically used to represent the unpacked size are not present in the header. Use the provided value. If the provided value is None, assume that there is an end-of-payload marker in the file.

Trait Implementations

impl Clone for UnpackedSize

fn clone(&self) -> UnpackedSize

Returns a duplicate of the value.

const fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for UnpackedSize

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for UnpackedSize

fn default() -> UnpackedSize

Returns the “default value” for a type.

impl PartialEq for UnpackedSize

fn eq(&self, other: &UnpackedSize) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for UnpackedSize

impl Eq for UnpackedSize

impl StructuralPartialEq for UnpackedSize