Struct Footer 

pub struct Footer {
    pub format_version: u16,
    pub flags: Flags,
    pub manifest_offset: u64,
    pub manifest_compressed: u64,
    pub manifest_original: u64,
    pub payload_offset: u64,
    pub payload_size: u64,
    pub dict_offset: u64,
    pub dict_size: u32,
    pub manifest_checksum: [u8; 4],
}

Fields

format_version: u16

Format version number (currently 1).

flags: Flags

Feature flags describing optional sections and capabilities.

manifest_offset: u64

Byte offset where the compressed manifest begins.

manifest_compressed: u64

Size of the manifest after compression.

manifest_original: u64

Size of the manifest before compression.

payload_offset: u64

Byte offset where the payload section begins.

payload_size: u64

Total size of the payload section in bytes.

dict_offset: u64

Byte offset of the zstd dictionary, or 0 if absent.

dict_size: u32

Size of the zstd dictionary in bytes, or 0 if absent.

manifest_checksum: [u8; 4]

xxHash32 checksum of the compressed manifest for integrity verification.

Implementations

impl Footer

pub fn is_stored(&self) -> bool

Whether the payload is stored raw (no zstd). When true the runtime must skip decompression and use payload bytes directly.

pub fn write_to<W: Write>(&self, w: &mut W) -> Result<()>

pub fn read_from<R: Read>(r: &mut R) -> Result<Self>

pub fn from_bytes(buf: &[u8; 76]) -> Result<Self>

Trait Implementations

impl Clone for Footer

fn clone(&self) -> Footer

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Footer

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

Formats the value using the given formatter.