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ArchiveBytes

znippy_plugin_git::resolve

Trait ArchiveBytes 

Source 
pub trait ArchiveBytes {
    // Required method
    fn at(&self, at: u64, len: u64) -> Result<Cow<'_, [u8]>>;
}
Expand description

Bytes of the verbatim archive, addressed absolutely.

The mmap ([crate::archive_map]) answers without a syscall and without a copy; a pread answers the tail a snapshot does not cover. Both are the same bytes, which is why the chain walker below can take either and never know which it got.

It exists so materialize_at can live here — beside the delta code it reuses — without this module learning what a store is.

Required Methods§

Source

fn at(&self, at: u64, len: u64) -> Result<Cow<'_, [u8]>>

Up to len bytes at at. Short is not an error: a probe near the end of the archive legitimately gets fewer, and the parsers below read a grammar rather than a fixed width. Empty means “there is nothing there”, which every caller treats as a corrupt back-reference.

Dyn Compatibility§

This trait is dyn compatible.

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

Implementors§