Struct CountingWriter 

pub struct CountingWriter<T> {
    pub inner: T,
    pub written: usize,
}

A wrapper that keeps track of the number of bytes written with the underlying writer T.

Fields

inner: T

written: usize

Implementations

impl<T> CountingWriter<T>

pub fn new(writer: T) -> Self

Trait Implementations

impl<T: Write> Write for CountingWriter<T>

fn write_str(&mut self, s: &str) -> Result

Writes a string slice into this writer, returning whether the write succeeded.

fn write_char(&mut self, c: char) -> Result<(), Error>

Writes a char into this writer, returning whether the write succeeded.

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

Glue for usage of the write! macro with implementors of this trait.

impl<T: Write> Write for CountingWriter<T>

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

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

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

Attempts to write an entire buffer into this write.

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

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

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

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” adaptor for this instance of Write.

impl<T: WriteByte> WriteByte for CountingWriter<T>

fn write_u8(&mut self, byte: u8) -> Result