Struct FileWriter

pub struct FileWriter { /* private fields */ }

Implementations

impl FileWriter

pub fn create(path: impl AsRef<Path>, mode: MemoryFileMode) -> Self

Creates a new file with the specified mode

pub fn len(&self) -> u64

Returns the total length of the file

pub fn write_at_start(&mut self, data: &[u8]) -> Result<(), ()>

Overwrites bytes at the start of the file, the data field should not be longer than 128 bytes

pub fn write_all_parallel(&self, data: &[u8], el_size: usize) -> u64

Appends atomically all the data to the file, returning the start position of the written data in the file

pub fn get_path(&self) -> PathBuf

pub fn flush_async(&self)

Trait Implementations

impl Drop for FileWriter

fn drop(&mut self)

Executes the destructor for this type.

impl Write for FileWriter

fn write(&mut self, buf: &[u8]) -> Result<usize>

Writes a buffer into this writer, returning how many bytes were written.

fn flush(&mut self) -> Result<()>

Flushes this output stream, ensuring that all intermediately buffered contents reach their destination.

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers.

fn is_write_vectored(&self) -> bool

🔬This is a nightly-only experimental API. (can_vector)

Determines if this Writer has an efficient write_vectored implementation.

fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>

Attempts to write an entire buffer into this writer.

fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>

🔬This is a nightly-only experimental API. (write_all_vectored)

Attempts to write multiple buffers into this writer.

fn write_fmt(&mut self, args: Arguments<'_>) -> Result<(), Error>

Writes a formatted string into this writer, returning any error encountered.

fn by_ref(&mut self) -> &mut Self

where Self: Sized,

Creates a “by reference” adapter for this instance of Write.

impl Writer for FileWriter

fn write(&mut self, bytes: &[u8]) -> Result<(), EncodeError>

Write bytes to the underlying writer. Exactly bytes.len() bytes must be written, or else an error should be returned.