Struct Writer

pub struct Writer { /* private fields */ }

An object that can be used to produce output, with no support for outputting structured machine-interpretable output.

Implementations

impl Writer

pub fn new_buffers<'a, O, E>(stdout: O, stderr: E) -> Self

where O: Write + 'static, E: Write + 'static,

Create a new writer that doesn’t support machine output at all, with the given streams underlying it.

pub fn new() -> Self

Create a new Writer that doesn’t support machine output at all

pub fn new_test(test_writer: &TestBuffers) -> Self

Returns a writer backed by string buffers that can be extracted after the writer is done with

pub fn stderr(&mut self) -> &mut Box<dyn Write>

Trait Implementations

impl Write for Writer

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, fmt: 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.