Struct FilePatchSource 

pub struct FilePatchSource { /* private fields */ }

PatchSource backed by one or more owned std::fs::Files, one per patch in the chain.

Single-threaded — no internal Mutex. Callers that need concurrent reads should construct one source per thread.

Implementations

impl FilePatchSource

pub fn open(path: impl AsRef<Path>) -> Result<Self>

Open a single patch file and wrap it as a one-patch chain.

Equivalent to FilePatchSource::open_chain with a one-element iterator.

Errors

Returns ZiPatchError::Io if the file cannot be opened.

pub fn open_chain<I, P>(paths: I) -> Result<Self>

where I: IntoIterator<Item = P>, P: AsRef<Path>,

Open every patch file in paths and wrap them as a chain. The first path becomes patch index 0, the second index 1, and so on, matching the order crate::index::PlanBuilder::add_patch consumed them.

Errors

Returns ZiPatchError::Io on the first path that fails to open.

pub fn from_file(file: File) -> Self

Wrap an already-open File as a one-patch chain.

pub fn patch_count(&self) -> usize

Number of patch files in the chain.

Trait Implementations

impl Debug for FilePatchSource

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

Formats the value using the given formatter.

impl PatchSource for FilePatchSource

fn read(&mut self, patch: u32, offset: u64, dst: &mut [u8]) -> Result<()>

Fill dst with dst.len() source bytes starting at offset in the patch indexed by patch.