Struct DiskFileAccess 

pub struct DiskFileAccess { /* private fields */ }

A FileAccess implementation that reads and writes files on disk.

Files are located by combining a base directory with the filename from the PAR2 file descriptions. The mapping from FileId to filename is built from the Par2FileSet at construction time.

Implementations

impl DiskFileAccess

pub fn new(base_dir: PathBuf, par2_set: &Par2FileSet) -> Self

Create a new DiskFileAccess from a base directory and a PAR2 file set.

Builds the internal file map from the file descriptions in the PAR2 set.

Trait Implementations

impl FileAccess for DiskFileAccess

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 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.

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.