Struct Indented 

pub struct Indented<'a, D: ?Sized> { /* private fields */ }

Helper struct for efficiently indenting multi-line display implementations.

This type will never allocate a string to handle inserting indentation. It instead leverages the write_str function that serves as the foundation of the core::fmt::Write trait. This lets it intercept each piece of output as it’s being written to the output buffer. It then splits on newlines giving slices into the original string. Finally we alternate writing these lines and the specified indentation to the output buffer.

Implementations

impl<'a, D: ?Sized> Indented<'a, D>

pub fn with_str(self, indentation: &'static str) -> Self

Sets the indentation string.

pub fn skip_initial(self) -> Self

Skip indenting the initial line.

This is useful when you’ve already written some content on the current line and want to start indenting only from the next line onwards.

pub fn into_inner(self) -> &'a mut D

Returns the inner writer.

Trait Implementations

impl<T> Write for Indented<'_, T>

where T: Write + ?Sized,

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> WriteStr for Indented<'_, T>

where T: WriteStr + ?Sized,

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

Writes a string to the writer.

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

Flushes the writer, ensuring that all intermediately buffered contents reach their destination.

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

Writes a single character to the writer.

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

Writes a formatted string to the writer.