Trait PackReadSource 

pub trait PackReadSource {
    // Required methods
    fn len(&self) -> Result<u64>;
    fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>;

    // Provided methods
    fn as_bytes(&self) -> Option<&[u8]> { ... }
    fn is_empty(&self) -> Result<bool> { ... }
}

A source that can read pack bytes positionally without changing shared cursor state or requiring the complete pack to be resident in memory.

Required Methods

fn len(&self) -> Result<u64>

Total source length, including the pack trailer.

fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>

Read bytes beginning at offset, with the same short-read semantics as std::io::Read::read. Returning 0 means end of source.

Provided Methods

fn as_bytes(&self) -> Option<&[u8]>

Borrow all source bytes when the backing is already contiguous (for example an mmap or owned buffer). The decoder uses this to inflate directly from the source without fixed-size input copies.

fn is_empty(&self) -> Result<bool>

Whether this source contains no bytes.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl PackReadSource for File

Available on Unix only.

fn len(&self) -> Result<u64>

fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>

impl PackReadSource for Vec<u8>

fn len(&self) -> Result<u64>

fn read_at(&self, offset: u64, buf: &mut [u8]) -> Result<usize>

fn as_bytes(&self) -> Option<&[u8]>

Implementors

impl PackReadSource for SlicePackSource<'_>