Header

infotheory::backends::rwkvzip

Struct Header 

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pub struct Header {
    pub magic: u32,
    pub version: u8,
    pub coder: u8,
    pub original_len: u64,
    pub crc32: u32,
}
Expand description

Header structure for compressed data files.

Layout (18 bytes total):

  • magic: 4 bytes (little-endian u32)
  • version: 1 byte
  • coder: 1 byte (0=AC, 1=rANS)
  • original_len: 8 bytes (little-endian u64)
  • crc32: 4 bytes (little-endian u32)

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§magic: u32

Magic number for format identification (must be MAGIC).

§version: u8

Format version for compatibility checking.

§coder: u8

Coder type used (0=AC, 1=rANS).

§original_len: u64

Original uncompressed data length in bytes.

§crc32: u32

CRC32 checksum of original data for integrity verification.

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impl Header

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pub const SIZE: usize

Total header size in bytes.

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pub fn new(coder: CoderType, original_len: u64, crc32: u32) -> Self

Create a new header for compressed data.

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

Serialize header to a writer (little-endian format).

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

Deserialize header from a reader (little-endian format).

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pub fn coder_type(&self) -> CoderType

Get the coder type from the header byte.

Trait Implementations§

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impl Clone for Header

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fn clone(&self) -> Header

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Header

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

Formats the value using the given formatter. Read more

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impl Freeze for Header

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impl RefUnwindSafe for Header

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impl Send for Header

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impl Sync for Header

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impl Unpin for Header

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impl UnwindSafe for Header

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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Causes self to use its LowerExp implementation when Debug-formatted.
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Causes self to use its LowerHex implementation when Debug-formatted.
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Causes self to use its Octal implementation when Debug-formatted.
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Causes self to use its Pointer implementation when Debug-formatted.
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Causes self to use its UpperExp implementation when Debug-formatted.
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Causes self to use its UpperHex implementation when Debug-formatted.
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fn vzip(self) -> V