pub struct ZstdEncoder<W: Write> { /* private fields */ }Implementations§
Trait Implementations§
source§impl<W: Write> Write for ZstdEncoder<W>
impl<W: Write> Write for ZstdEncoder<W>
source§fn write(&mut self, buf: &[u8]) -> Result<usize>
fn write(&mut self, buf: &[u8]) -> Result<usize>
Writes a buffer into this writer, returning how many bytes were written. Read more
source§fn flush(&mut self) -> Result<()>
fn flush(&mut self) -> Result<()>
Flushes this output stream, ensuring that all intermediately buffered
contents reach their destination. Read more
source§fn is_write_vectored(&self) -> bool
fn is_write_vectored(&self) -> bool
🔬This is a nightly-only experimental API. (
can_vector)1.0.0 · source§fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
fn write_all(&mut self, buf: &[u8]) -> Result<(), Error>
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source§fn write_all_vectored(&mut self, bufs: &mut [IoSlice<'_>]) -> Result<(), Error>
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
impl<W: Write + Sync> Sync for ZstdEncoder<W>
Safety:
- There is no sharing references to zstd encoder.
Writerequires unique reference, andfinishmoves the instance itself. - Sharing only internal writer, which implements
Sync
Auto Trait Implementations§
impl<W> Freeze for ZstdEncoder<W>where
W: Freeze,
impl<W> RefUnwindSafe for ZstdEncoder<W>where
W: RefUnwindSafe,
impl<W> Send for ZstdEncoder<W>where
W: Send,
impl<W> Unpin for ZstdEncoder<W>where
W: Unpin,
impl<W> !UnwindSafe for ZstdEncoder<W>
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§type ArchivedMetadata = ()
type ArchivedMetadata = ()
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§impl<T> Conv for T
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§impl<T> ExecutableCommand for T
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§fn execute(&mut self, command: impl Command) -> Result<&mut T, Error>
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§Arguments
-
The command that you want to execute directly.
§Example
use std::io;
use crossterm::{ExecutableCommand, style::Print};
fn main() -> io::Result<()> {
// will be executed directly
io::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.
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and can therefore not be written to the given
writer. Therefore, there is no difference between execute and queue for those old Windows versions.
§impl<T> FmtForward for T
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§impl<T> Instrument for T
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§fn instrument(self, span: Span) -> Instrumented<Self> ⓘ
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§fn try_octets_into(
self,
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Performs the conversion.
§fn octets_into(self) -> Targetwhere
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§impl<D> OwoColorize for D
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§fn fg<C>(&self) -> FgColorDisplay<'_, C, Self>where
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§fn bg<C>(&self) -> BgColorDisplay<'_, C, Self>where
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Change the background color to magenta
§fn default_color(&self) -> FgColorDisplay<'_, Default, Self>
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Change the foreground color to the terminal default
§fn on_default_color(&self) -> BgColorDisplay<'_, Default, Self>
fn on_default_color(&self) -> BgColorDisplay<'_, Default, Self>
Change the background color to the terminal default
§fn bright_black(&self) -> FgColorDisplay<'_, BrightBlack, Self>
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Change the foreground color to bright black
§fn on_bright_black(&self) -> BgColorDisplay<'_, BrightBlack, Self>
fn on_bright_black(&self) -> BgColorDisplay<'_, BrightBlack, Self>
Change the background color to bright black
§fn bright_red(&self) -> FgColorDisplay<'_, BrightRed, Self>
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Change the foreground color to bright red
§fn on_bright_red(&self) -> BgColorDisplay<'_, BrightRed, Self>
fn on_bright_red(&self) -> BgColorDisplay<'_, BrightRed, Self>
Change the background color to bright red
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Change the foreground color to bright green
§fn on_bright_green(&self) -> BgColorDisplay<'_, BrightGreen, Self>
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Change the background color to bright green
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Change the foreground color to bright yellow
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Change the foreground color to bright blue
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Change the foreground color to bright magenta
§fn on_bright_magenta(&self) -> BgColorDisplay<'_, BrightMagenta, Self>
fn on_bright_magenta(&self) -> BgColorDisplay<'_, BrightMagenta, Self>
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Change the foreground color to bright purple
§fn on_bright_purple(&self) -> BgColorDisplay<'_, BrightMagenta, Self>
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Change the foreground color to bright cyan
§fn on_bright_cyan(&self) -> BgColorDisplay<'_, BrightCyan, Self>
fn on_bright_cyan(&self) -> BgColorDisplay<'_, BrightCyan, Self>
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§fn bright_white(&self) -> FgColorDisplay<'_, BrightWhite, Self>
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Change the foreground color to bright white
§fn on_bright_white(&self) -> BgColorDisplay<'_, BrightWhite, Self>
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Change the background color to bright white
§fn blink_fast(&self) -> BlinkFastDisplay<'_, Self>
fn blink_fast(&self) -> BlinkFastDisplay<'_, Self>
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Hide the text
§fn strikethrough(&self) -> StrikeThroughDisplay<'_, Self>
fn strikethrough(&self) -> StrikeThroughDisplay<'_, Self>
Cross out the text
§fn color<Color>(&self, color: Color) -> FgDynColorDisplay<'_, Color, Self>where
Color: DynColor,
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,
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>
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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>
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Set the background color to a specific RGB value.
§fn truecolor(&self, r: u8, g: u8, b: u8) -> FgDynColorDisplay<'_, Rgb, Self>
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§fn on_truecolor(&self, r: u8, g: u8, b: u8) -> BgDynColorDisplay<'_, Rgb, Self>
fn on_truecolor(&self, r: u8, g: u8, b: u8) -> BgDynColorDisplay<'_, Rgb, Self>
Sets the background color to an RGB value.
§fn if_supports_color<'a, Out, ApplyFn>(
&'a self,
stream: impl Into<Stream>,
apply: ApplyFn,
) -> SupportsColorsDisplay<'a, Self, Out, ApplyFn>where
ApplyFn: Fn(&'a Self) -> Out,
fn if_supports_color<'a, Out, ApplyFn>(
&'a self,
stream: impl Into<Stream>,
apply: ApplyFn,
) -> SupportsColorsDisplay<'a, Self, Out, ApplyFn>where
ApplyFn: Fn(&'a Self) -> Out,
Apply a given transformation function to all formatters if the given stream
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§impl<T> Pipe for Twhere
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§fn pipe<R>(self, func: impl FnOnce(Self) -> R) -> Rwhere
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&'a mut self,
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§fn queue(&mut self, command: impl Command) -> Result<&mut T, Error>
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
flushis called manually on the given type implementingio::Write. - The terminal will
flushautomatically if the buffer is full. - Each line is flushed in case of
stdout, because it is line buffered.
§Arguments
-
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§Examples
use std::io::{self, Write};
use crossterm::{QueueableCommand, style::Print};
fn main() -> io::Result<()> {
let mut stdout = io::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.
§impl<W> SynchronizedUpdate for W
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§fn sync_update<T>(
&mut self,
operations: impl FnOnce(&mut W) -> T,
) -> Result<T, Error>
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Performs a set of actions within a synchronous update.
Updates will be suspended in the terminal, the function will be executed against self, updates will be resumed, and a flush will be performed.
§Arguments
-
Function
A function that performs the operations that must execute in a synchronized update.
§Examples
use std::io;
use crossterm::{ExecutableCommand, SynchronizedUpdate, style::Print};
fn main() -> io::Result<()> {
let mut stdout = io::stdout();
stdout.sync_update(|stdout| {
stdout.execute(Print("foo 1\n".to_string()))?;
stdout.execute(Print("foo 2".to_string()))?;
// The effects of the print command will not be present in the terminal
// buffer, but not visible in the terminal.
std::io::Result::Ok(())
})?;
// The effects of the commands will be visible.
Ok(())
// ==== Output ====
// foo 1
// foo 2
}§Notes
This command is performed only using ANSI codes, and will do nothing on terminals that do not support ANSI codes, or this specific extension.
When rendering the screen of the terminal, the Emulator usually iterates through each visible grid cell and renders its current state. With applications updating the screen a at higher frequency this can cause tearing.
This mode attempts to mitigate that.
When the synchronization mode is enabled following render calls will keep rendering the last rendered state. The terminal Emulator keeps processing incoming text and sequences. When the synchronized update mode is disabled again the renderer may fetch the latest screen buffer state again, effectively avoiding the tearing effect by unintentionally rendering in the middle a of an application screen update.
§impl<T> Tap for T
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impl<W> WriteBytesExt for W
§fn write_u8(&mut self, n: u8) -> Result<(), Error>
fn write_u8(&mut self, n: u8) -> Result<(), Error>
Writes an unsigned 8 bit integer to the underlying writer. Read more
§fn write_i8(&mut self, n: i8) -> Result<(), Error>
fn write_i8(&mut self, n: i8) -> Result<(), Error>
Writes a signed 8 bit integer to the underlying writer. Read more
§fn write_u16<T>(&mut self, n: u16) -> Result<(), Error>where
T: ByteOrder,
fn write_u16<T>(&mut self, n: u16) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned 16 bit integer to the underlying writer. Read more
§fn write_i16<T>(&mut self, n: i16) -> Result<(), Error>where
T: ByteOrder,
fn write_i16<T>(&mut self, n: i16) -> Result<(), Error>where
T: ByteOrder,
Writes a signed 16 bit integer to the underlying writer. Read more
§fn write_u24<T>(&mut self, n: u32) -> Result<(), Error>where
T: ByteOrder,
fn write_u24<T>(&mut self, n: u32) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned 24 bit integer to the underlying writer. Read more
§fn write_i24<T>(&mut self, n: i32) -> Result<(), Error>where
T: ByteOrder,
fn write_i24<T>(&mut self, n: i32) -> Result<(), Error>where
T: ByteOrder,
Writes a signed 24 bit integer to the underlying writer. Read more
§fn write_u32<T>(&mut self, n: u32) -> Result<(), Error>where
T: ByteOrder,
fn write_u32<T>(&mut self, n: u32) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned 32 bit integer to the underlying writer. Read more
§fn write_i32<T>(&mut self, n: i32) -> Result<(), Error>where
T: ByteOrder,
fn write_i32<T>(&mut self, n: i32) -> Result<(), Error>where
T: ByteOrder,
Writes a signed 32 bit integer to the underlying writer. Read more
§fn write_u48<T>(&mut self, n: u64) -> Result<(), Error>where
T: ByteOrder,
fn write_u48<T>(&mut self, n: u64) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned 48 bit integer to the underlying writer. Read more
§fn write_i48<T>(&mut self, n: i64) -> Result<(), Error>where
T: ByteOrder,
fn write_i48<T>(&mut self, n: i64) -> Result<(), Error>where
T: ByteOrder,
Writes a signed 48 bit integer to the underlying writer. Read more
§fn write_u64<T>(&mut self, n: u64) -> Result<(), Error>where
T: ByteOrder,
fn write_u64<T>(&mut self, n: u64) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned 64 bit integer to the underlying writer. Read more
§fn write_i64<T>(&mut self, n: i64) -> Result<(), Error>where
T: ByteOrder,
fn write_i64<T>(&mut self, n: i64) -> Result<(), Error>where
T: ByteOrder,
Writes a signed 64 bit integer to the underlying writer. Read more
§fn write_u128<T>(&mut self, n: u128) -> Result<(), Error>where
T: ByteOrder,
fn write_u128<T>(&mut self, n: u128) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned 128 bit integer to the underlying writer.
§fn write_i128<T>(&mut self, n: i128) -> Result<(), Error>where
T: ByteOrder,
fn write_i128<T>(&mut self, n: i128) -> Result<(), Error>where
T: ByteOrder,
Writes a signed 128 bit integer to the underlying writer.
§fn write_uint<T>(&mut self, n: u64, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
fn write_uint<T>(&mut self, n: u64, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned n-bytes integer to the underlying writer. Read more
§fn write_int<T>(&mut self, n: i64, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
fn write_int<T>(&mut self, n: i64, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
Writes a signed n-bytes integer to the underlying writer. Read more
§fn write_uint128<T>(&mut self, n: u128, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
fn write_uint128<T>(&mut self, n: u128, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
Writes an unsigned n-bytes integer to the underlying writer. Read more
§fn write_int128<T>(&mut self, n: i128, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
fn write_int128<T>(&mut self, n: i128, nbytes: usize) -> Result<(), Error>where
T: ByteOrder,
Writes a signed n-bytes integer to the underlying writer. Read more