Struct MemoryFileAccess 

pub struct MemoryFileAccess { /* private fields */ }

Simple in-memory file access for testing.

Implementations

impl MemoryFileAccess

pub fn new() -> Self

pub fn add_file(&mut self, file_id: FileId, data: Vec<u8>)

Trait Implementations

impl Default for MemoryFileAccess

fn default() -> Self

Returns the “default value” for a type.

impl FileAccess for MemoryFileAccess

fn read_file_range( &self, file_id: &FileId, offset: u64, len: u64, ) -> Result<Vec<u8>>

Read a range of bytes from a file identified by its FileId.

fn read_file_range_into( &self, file_id: &FileId, offset: u64, dst: &mut [u8], ) -> Result<usize>

Read bytes into a caller-provided buffer, returning the number of bytes read.

fn file_exists(&self, file_id: &FileId) -> bool

Check if a file exists on disk.

fn file_length(&self, file_id: &FileId) -> Option<u64>

Get the actual length of a file on disk.

fn read_file(&self, file_id: &FileId) -> Result<Vec<u8>>

Read the entire file content.

fn write_file_range( &mut self, file_id: &FileId, offset: u64, data: &[u8], ) -> Result<()>

Write data to a file at the given offset.

fn open_sequential_reader( &self, _file_id: &FileId, ) -> Result<Option<Box<dyn Read>>>

Open a forward-only reader for hot paths that consume a whole file from offset 0.

fn open_range_reader( &self, _file_id: &FileId, ) -> Result<Option<Box<dyn FileRangeReader>>>

Open a reusable seekable reader for range-oriented repair input.