Struct branchless::core::effects::ErrorStream

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pub struct ErrorStream { /* private fields */ }

Expand description

A handle to stderr, but doesn’t overwrite interactive progress notifications.

Trait Implementations

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impl Drop for ErrorStream

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fn drop(&mut self)

Executes the destructor for this type. Read more

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impl Write for ErrorStream

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

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

1.1.0 · source

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

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

1.0.0 · source

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

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

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impl Write for ErrorStream

You probably don’t want this. This implementation is only for tracing’s fmt_layer, because it needs a writer of type io::Write, but Effects normally uses its implementation of fmt::Write.

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

Write a buffer into this writer, returning how many bytes were written. Read more

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

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

1.36.0 · source

fn write_vectored(&mut self, bufs: &[IoSlice<'_>]) -> Result<usize, Error>

Like write, except that it writes from a slice of buffers. Read more

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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. Read more

1.0.0 · source

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

Attempts to write an entire buffer into this writer. Read more

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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. Read more

1.0.0 · source

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

Writes a formatted string into this writer, returning any error encountered. Read more

1.0.0 · source

fn by_ref(&mut self) -> &mut Selfwhere
Self: Sized,

Creates a “by reference” adapter for this instance of Write. Read more

Auto Trait Implementations

impl RefUnwindSafe for ErrorStream

impl UnwindSafe for ErrorStream

Blanket Implementations

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impl<T> Any for Twhere
T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more

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impl<T> Borrow<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more

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impl<T> BorrowMut<T> for Twhere
T: ?Sized,

const: unstable · source

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more

impl<T> ExecutableCommand for Twhere
T: Write + ?Sized,

fn execute(&mut self, command: impl Command) -> Result<&mut T, Error>

Executes the given command directly.

The given command its ANSI escape code will be written and flushed onto Self.

Arguments

Command

The command that you want to execute directly.

Example

use std::io::{Write, stdout};

use crossterm::{Result, ExecutableCommand, style::Print};

 fn main() -> Result<()> {
     // will be executed directly
      stdout()
        .execute(Print("sum:\n".to_string()))?
        .execute(Print(format!("1 + 1= {} ", 1 + 1)))?;

      Ok(())

     // ==== Output ====
     // sum:
     // 1 + 1 = 2
 }

Have a look over at the Command API for more details.

Notes

In the case of UNIX and Windows 10, ANSI codes are written to the given ‘writer’.
In case of Windows versions lower than 10, a direct WinAPI call will be made. The reason for this is that Windows versions lower than 10 do not support ANSI codes, and can therefore not be written to the given writer. Therefore, there is no difference between execute and queue for those old Windows versions.

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impl<T> From<T> for T

const: unstable · source

fn from(t: T) -> T

Returns the argument unchanged.

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impl<T> Instrument for T

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fn instrument(self, span: Span) -> Instrumented<Self>

Instruments this type with the provided Span, returning an Instrumented wrapper. Read more

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fn in_current_span(self) -> Instrumented<Self>

Instruments this type with the current Span, returning an Instrumented wrapper. Read more

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impl<T, U> Into for Twhere
U: From<T>,

const: unstable · source

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

impl<D> OwoColorize for D

fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>where
C: Color,

Set the foreground color generically Read more

fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>where
C: Color,

Set the background color generically. Read more

fn black<'a>(&'a self) -> FgColorDisplay<'a, Black, Self>

Change the foreground color to black

fn on_black<'a>(&'a self) -> BgColorDisplay<'a, Black, Self>

Change the background color to black

fn red<'a>(&'a self) -> FgColorDisplay<'a, Red, Self>

Change the foreground color to red

fn on_red<'a>(&'a self) -> BgColorDisplay<'a, Red, Self>

Change the background color to red

fn green<'a>(&'a self) -> FgColorDisplay<'a, Green, Self>

Change the foreground color to green

fn on_green<'a>(&'a self) -> BgColorDisplay<'a, Green, Self>

Change the background color to green

fn yellow<'a>(&'a self) -> FgColorDisplay<'a, Yellow, Self>

Change the foreground color to yellow

fn on_yellow<'a>(&'a self) -> BgColorDisplay<'a, Yellow, Self>

Change the background color to yellow

fn blue<'a>(&'a self) -> FgColorDisplay<'a, Blue, Self>

Change the foreground color to blue

fn on_blue<'a>(&'a self) -> BgColorDisplay<'a, Blue, Self>

Change the background color to blue

fn magenta<'a>(&'a self) -> FgColorDisplay<'a, Magenta, Self>

Change the foreground color to magenta

fn on_magenta<'a>(&'a self) -> BgColorDisplay<'a, Magenta, Self>

Change the background color to magenta

fn purple<'a>(&'a self) -> FgColorDisplay<'a, Magenta, Self>

Change the foreground color to purple

fn on_purple<'a>(&'a self) -> BgColorDisplay<'a, Magenta, Self>

Change the background color to purple

fn cyan<'a>(&'a self) -> FgColorDisplay<'a, Cyan, Self>

Change the foreground color to cyan

fn on_cyan<'a>(&'a self) -> BgColorDisplay<'a, Cyan, Self>

Change the background color to cyan

fn white<'a>(&'a self) -> FgColorDisplay<'a, White, Self>

Change the foreground color to white

fn on_white<'a>(&'a self) -> BgColorDisplay<'a, White, Self>

Change the background color to white

fn default_color<'a>(&'a self) -> FgColorDisplay<'a, Default, Self>

Change the foreground color to the terminal default

fn on_default_color<'a>(&'a self) -> BgColorDisplay<'a, Default, Self>

Change the background color to the terminal default

fn bright_black<'a>(&'a self) -> FgColorDisplay<'a, BrightBlack, Self>

Change the foreground color to bright black

fn on_bright_black<'a>(&'a self) -> BgColorDisplay<'a, BrightBlack, Self>

Change the background color to bright black

fn bright_red<'a>(&'a self) -> FgColorDisplay<'a, BrightRed, Self>

Change the foreground color to bright red

fn on_bright_red<'a>(&'a self) -> BgColorDisplay<'a, BrightRed, Self>

Change the background color to bright red

fn bright_green<'a>(&'a self) -> FgColorDisplay<'a, BrightGreen, Self>

Change the foreground color to bright green

fn on_bright_green<'a>(&'a self) -> BgColorDisplay<'a, BrightGreen, Self>

Change the background color to bright green

fn bright_yellow<'a>(&'a self) -> FgColorDisplay<'a, BrightYellow, Self>

Change the foreground color to bright yellow

fn on_bright_yellow<'a>(&'a self) -> BgColorDisplay<'a, BrightYellow, Self>

Change the background color to bright yellow

fn bright_blue<'a>(&'a self) -> FgColorDisplay<'a, BrightBlue, Self>

Change the foreground color to bright blue

fn on_bright_blue<'a>(&'a self) -> BgColorDisplay<'a, BrightBlue, Self>

Change the background color to bright blue

fn bright_magenta<'a>(&'a self) -> FgColorDisplay<'a, BrightMagenta, Self>

Change the foreground color to bright magenta

fn on_bright_magenta<'a>(&'a self) -> BgColorDisplay<'a, BrightMagenta, Self>

Change the background color to bright magenta

fn bright_purple<'a>(&'a self) -> FgColorDisplay<'a, BrightMagenta, Self>

Change the foreground color to bright purple

fn on_bright_purple<'a>(&'a self) -> BgColorDisplay<'a, BrightMagenta, Self>

Change the background color to bright purple

fn bright_cyan<'a>(&'a self) -> FgColorDisplay<'a, BrightCyan, Self>

Change the foreground color to bright cyan

fn on_bright_cyan<'a>(&'a self) -> BgColorDisplay<'a, BrightCyan, Self>

Change the background color to bright cyan

fn bright_white<'a>(&'a self) -> FgColorDisplay<'a, BrightWhite, Self>

Change the foreground color to bright white

fn on_bright_white<'a>(&'a self) -> BgColorDisplay<'a, BrightWhite, Self>

Change the background color to bright white

fn bold<'a>(&'a self) -> BoldDisplay<'a, Self>

Make the text bold

fn dimmed<'a>(&'a self) -> DimDisplay<'a, Self>

Make the text dim

fn italic<'a>(&'a self) -> ItalicDisplay<'a, Self>

Make the text italicized

fn underline<'a>(&'a self) -> UnderlineDisplay<'a, Self>

Make the text italicized

fn blink<'a>(&'a self) -> BlinkDisplay<'a, Self>

Make the text blink

fn blink_fast<'a>(&'a self) -> BlinkFastDisplay<'a, Self>

Make the text blink (but fast!)

fn reversed<'a>(&'a self) -> ReversedDisplay<'a, Self>

Swap the foreground and background colors

fn hidden<'a>(&'a self) -> HiddenDisplay<'a, Self>

Hide the text

fn strikethrough<'a>(&'a self) -> StrikeThroughDisplay<'a, Self>

Cross out the text

fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>where
Color: DynColor,

Set the foreground color at runtime. Only use if you do not know which color will be used at compile-time. If the color is constant, use either OwoColorize::fg or a color-specific method, such as OwoColorize::green, Read more

fn on_color<Color>(&self, color: Color) -> BgDynColorDisplay<'_, Color, Self>where
Color: DynColor,

Set the background color at runtime. Only use if you do not know what color to use at compile-time. If the color is constant, use either OwoColorize::bg or a color-specific method, such as OwoColorize::on_yellow, Read more

fn fg_rgb<const R: u8, const G: u8, const B: u8>(
&self
) -> FgColorDisplay<'_, CustomColor<R, G, B>, Self>

Set the foreground color to a specific RGB value.

fn bg_rgb<const R: u8, const G: u8, const B: u8>(
&self
) -> BgColorDisplay<'_, CustomColor<R, G, B>, Self>

Set the background color to a specific RGB value.

fn truecolor(&self, r: u8, g: u8, b: u8) -> FgDynColorDisplay<'_, Rgb, Self>

Sets the foreground color to an RGB value.

fn on_truecolor(&self, r: u8, g: u8, b: u8) -> BgDynColorDisplay<'_, Rgb, Self>

Sets the background color to an RGB value.

fn style(&self, style: Style) -> Styled<&Self>

Apply a runtime-determined style

impl<T> Pointable for T

const ALIGN: usize = mem::align_of::<T>()

The alignment of pointer.

type Init = T

The type for initializers.

unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more

unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more

unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more

unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more

impl<T> QueueableCommand for Twhere
T: Write + ?Sized,

fn queue(&mut self, command: impl Command) -> Result<&mut T, Error>

Queues the given command for further execution.

Queued commands will be executed in the following cases:

When flush is called manually on the given type implementing io::Write.
The terminal will flush automatically if the buffer is full.
Each line is flushed in case of stdout, because it is line buffered.

Arguments

Command

The command that you want to queue for later execution.

Examples

use std::io::{Write, stdout};

use crossterm::{Result, QueueableCommand, style::Print};

 fn main() -> Result<()> {
    let mut stdout = stdout();

    // `Print` will executed executed when `flush` is called.
    stdout
        .queue(Print("foo 1\n".to_string()))?
        .queue(Print("foo 2".to_string()))?;

    // some other code (no execution happening here) ...

    // when calling `flush` on `stdout`, all commands will be written to the stdout and therefore executed.
    stdout.flush()?;

    Ok(())

    // ==== Output ====
    // foo 1
    // foo 2
}

Have a look over at the Command API for more details.

Notes

In the case of UNIX and Windows 10, ANSI codes are written to the given ‘writer’.
In case of Windows versions lower than 10, a direct WinAPI call will be made. The reason for this is that Windows versions lower than 10 do not support ANSI codes, and can therefore not be written to the given writer. Therefore, there is no difference between execute and queue for those old Windows versions.

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impl<T, U> TryFrom for Twhere
U: Into<T>,

type Error = Infallible

The type returned in the event of a conversion error.

const: unstable · source

fn try_from(value: U) -> Result<T, <T as TryFrom>::Error>

Performs the conversion.

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impl<T, U> TryInto for Twhere
U: TryFrom<T>,

type Error = >::Error

The type returned in the event of a conversion error.

const: unstable · source