Struct Output 

pub struct Output<'c> { /* private fields */ }

What a program writes, sent to the shell a message at a time.

Implements fmt::Write, so write! works. Bounded: one message is buffered and sent when full, so a program can write any amount without holding it all.

Implementations

impl<'c> Output<'c>

pub fn new(ctx: &'c ServiceContext) -> Output<'c>

Output to whoever started this program: its first peer, the shell.

pub fn flush(&mut self)

Send what is buffered now.

pub fn finish(self, status: u32) -> !

Send the rest and the end byte, then end the program with status - 0 for success. A status of 0 becomes 1 when the output could not be delivered, so the shell is never told it worked when it did not.

Trait Implementations

impl Write for Output<'_>

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.