Struct CompressedBlob 

pub struct CompressedBlob {
    pub payload: Vec<u8>,
    pub stored: bool,
    pub original_size: usize,
    pub original_hash: Vec<u8>,
}

Losslessly compressed byte data, produced by FractalCompressor::compress_bytes.

payload is a DEFLATE stream, unless stored is set — in which case DEFLATE did not make the input smaller and payload is the original bytes verbatim. Either way decompress_bytes recovers the input exactly, and verifies it against original_hash before returning it.

Fields

payload: Vec<u8>

DEFLATE stream, or the original bytes when stored is true.

stored: bool

True when the input did not compress and payload holds it verbatim.

original_size: usize

Length of the original input, in bytes.

original_hash: Vec<u8>

SHA-256 of the original input, checked on decompression.

Implementations

impl CompressedBlob

pub fn ratio(&self) -> f64

Payload size as a fraction of the original: below 1.0 means it got smaller.

Returns 1.0 for an empty input, and exactly 1.0 whenever stored is set, since the payload is then the input itself.

Trait Implementations

impl Clone for CompressedBlob

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for CompressedBlob

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for CompressedBlob

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for CompressedBlob

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.