Struct FileContentsWithChunkedCaching 

pub struct FileContentsWithChunkedCaching<S: FileByteSource> { /* private fields */ }

Implementations

impl<S: FileByteSource> FileContentsWithChunkedCaching<S>

pub fn new(file_len: u64, source: S) -> Self

Trait Implementations

impl<S: FileByteSource> FileContents for FileContentsWithChunkedCaching<S>

fn len(&self) -> u64

Must return the length, in bytes, of this file.

fn read_bytes_at( &self, offset: u64, size: u64, ) -> FileAndPathHelperResult<&[u8]>

Must return a slice of the file contents, or an error. The slice’s lifetime must be valid for the entire lifetime of this FileContents object. This restriction may be a bit cumbersome to satisfy; it’s a restriction that’s inherited from the object crate’s ReadRef trait.

fn read_bytes_at_until( &self, range: Range<u64>, delimiter: u8, ) -> FileAndPathHelperResult<&[u8]>

TODO: document

fn read_bytes_into( &self, buffer: &mut Vec<u8>, offset: u64, size: usize, ) -> FileAndPathHelperResult<()>

Append size bytes to buffer, starting to read at offset in the file. If successful, buffer must have had its len increased exactly by size, otherwise the caller may panic.

fn is_empty(&self) -> bool

Whether the file is empty.