Struct genio::util::WriteTrunc

pub struct WriteTrunc<W> { /* fields omitted */ }

Truncates writing so that at most n bytes in total are written into the writer.

Excess bytes are silently dropped.

Methods

impl<W: Write> WriteTrunc<W>

fn new(writer: W, max_bytes: u64) -> Self

Initializes truncate.

fn remaining_bytes(&self) -> u64

Returns how many bytes remain until they will be truncated.

Trait Implementations

impl<W: Write> Write for WriteTrunc<W>

type WriteError = W::WriteError

Value of this type is returned when write() fails.

type FlushError = W::FlushError

Value of this type is returned when flush() fails. In case of low-level writers flush often does nothing and therefore doesn't return error, so this type might be Void.

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

Write a buffer into this object, returning how many bytes were written.

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

Attempts to write an entire buffer into this Write.

fn flush(&mut self) -> Result<(), Self::FlushError>

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

fn size_hint(&mut self, min: usize, max: Option<usize>)

Hints the writer how much bytes will be written after call to this function. At least min bytes should be written after the call to this function and if max is Some(x) than at most x bytes should be written.