Struct console::Term

pub struct Term { /* private fields */ }

Abstraction around a terminal.

A terminal can be cloned. If a buffer is used it’s shared across all clones which means it largely acts as a handle.

Implementations

impl Term

pub fn stdout() -> Term

Return a new unbuffered terminal.

pub fn stderr() -> Term

Return a new unbuffered terminal to stderr.

pub fn buffered_stdout() -> Term

Return a new buffered terminal.

pub fn buffered_stderr() -> Term

Return a new buffered terminal to stderr.

pub fn read_write_pair<R, W>(read: R, write: W) -> Term where
    R: Read + Debug + AsRawFd + Send + 'static,
    W: Write + Debug + AsRawFd + Send + 'static, 

Return a terminal for the given Read/Write pair styled like stderr.

pub fn read_write_pair_with_style<R, W>(read: R, write: W, style: Style) -> Term where
    R: Read + Debug + AsRawFd + Send + 'static,
    W: Write + Debug + AsRawFd + Send + 'static, 

Return a terminal for the given Read/Write pair.

pub fn style(&self) -> Style

Return the style for this terminal.

pub fn target(&self) -> TermTarget

Return the target of this terminal.

pub fn write_line(&self, s: &str) -> Result<()>

Write a string to the terminal and add a newline.

pub fn read_char(&self) -> Result<char>

Read a single character from the terminal.

This does not echo the character and blocks until a single character is entered.

pub fn read_key(&self) -> Result<Key>

Read a single key form the terminal.

This does not echo anything. If the terminal is not user attended the return value will always be the unknown key.

pub fn read_line(&self) -> Result<String>

Read one line of input.

This does not include the trailing newline. If the terminal is not user attended the return value will always be an empty string.

pub fn read_line_initial_text(&self, initial: &str) -> Result<String>

Read one line of input with initial text.

This does not include the trailing newline. If the terminal is not user attended the return value will always be an empty string.

pub fn read_secure_line(&self) -> Result<String>

Read a line of input securely.

This is similar to read_line but will not echo the output. This also switches the terminal into a different mode where not all characters might be accepted.

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

Flush internal buffers.

This forces the contents of the internal buffer to be written to the terminal. This is unnecessary for unbuffered terminals which will automatically flush.

pub fn is_term(&self) -> bool

Check if the terminal is indeed a terminal.

pub fn features(&self) -> TermFeatures<'_>

Check for common terminal features.

pub fn size(&self) -> (u16, u16)

Return the terminal size in rows and columns or gets sensible defaults.

pub fn size_checked(&self) -> Option<(u16, u16)>

Return the terminal size in rows and columns.

If the size cannot be reliably determined None is returned.

pub fn move_cursor_to(&self, x: usize, y: usize) -> Result<()>

Move the cursor to row x and column y. Values are 0-based.

pub fn move_cursor_up(&self, n: usize) -> Result<()>

Move the cursor up by n lines, if possible.

If there are less than n lines above the current cursor position, the cursor is moved to the top line of the terminal (i.e., as far up as possible).

pub fn move_cursor_down(&self, n: usize) -> Result<()>

Move the cursor down by n lines, if possible.

If there are less than n lines below the current cursor position, the cursor is moved to the bottom line of the terminal (i.e., as far down as possible).

pub fn move_cursor_left(&self, n: usize) -> Result<()>

Move the cursor n characters to the left, if possible.

If there are fewer than n characters to the left of the current cursor position, the cursor is moved to the beginning of the line (i.e., as far to the left as possible).

pub fn move_cursor_right(&self, n: usize) -> Result<()>

Move the cursor n characters to the right.

If there are fewer than n characters to the right of the current cursor position, the cursor is moved to the end of the current line (i.e., as far to the right as possible).

pub fn clear_line(&self) -> Result<()>

Clear the current line.

Position the cursor at the beginning of the current line.

pub fn clear_last_lines(&self, n: usize) -> Result<()>

Clear the last n lines before the current line.

Position the cursor at the beginning of the first line that was cleared.

pub fn clear_screen(&self) -> Result<()>

Clear the entire screen.

Move the cursor to the upper left corner of the screen.

pub fn clear_to_end_of_screen(&self) -> Result<()>

Clear everything from the current cursor position to the end of the screen. The cursor stays in its position.

pub fn clear_chars(&self, n: usize) -> Result<()>

Clear the last n characters of the current line.

pub fn set_title<T: Display>(&self, title: T)

Set the terminal title.

pub fn show_cursor(&self) -> Result<()>

Make the cursor visible again.

pub fn hide_cursor(&self) -> Result<()>

Hide the cursor.

Trait Implementations

impl AsRawFd for Term

fn as_raw_fd(&self) -> RawFd

Extracts the raw file descriptor.

impl Clone for Term

fn clone(&self) -> Term

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for Term

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'a> Read for &'a Term

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

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

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

Like read, except that it reads into a slice of buffers.

fn is_read_vectored(&self) -> bool

🔬 This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

fn read_to_end(&mut self, buf: &mut Vec<u8, Global>) -> Result<usize, Error>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Read all bytes until EOF in this source, appending them to buf.

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

Read the exact number of bytes required to fill buf.

fn read_buf(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>

🔬 This is a nightly-only experimental API. (read_buf)

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>

🔬 This is a nightly-only experimental API. (read_buf)

Read the exact number of bytes required to fill buf.

fn by_ref(&mut self) -> &mut Self

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, 

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

Creates an adapter which will read at most limit bytes from it.

impl Read for Term

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

Pull some bytes from this source into the specified buffer, returning how many bytes were read.

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

Like read, except that it reads into a slice of buffers.

fn is_read_vectored(&self) -> bool

🔬 This is a nightly-only experimental API. (can_vector)

Determines if this Reader has an efficient read_vectored implementation.

fn read_to_end(&mut self, buf: &mut Vec<u8, Global>) -> Result<usize, Error>

Read all bytes until EOF in this source, placing them into buf.

fn read_to_string(&mut self, buf: &mut String) -> Result<usize, Error>

Read all bytes until EOF in this source, appending them to buf.

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

Read the exact number of bytes required to fill buf.

fn read_buf(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>

🔬 This is a nightly-only experimental API. (read_buf)

Pull some bytes from this source into the specified buffer.

fn read_buf_exact(&mut self, buf: &mut ReadBuf<'_>) -> Result<(), Error>

🔬 This is a nightly-only experimental API. (read_buf)

Read the exact number of bytes required to fill buf.

fn by_ref(&mut self) -> &mut Self

Creates a “by reference” adaptor for this instance of Read.

fn bytes(self) -> Bytes<Self>

Transforms this Read instance to an Iterator over its bytes.

fn chain<R>(self, next: R) -> Chain<Self, R> where
    R: Read, 

Creates an adapter which will chain this stream with another.

fn take(self, limit: u64) -> Take<Self>

Creates an adapter which will read at most limit bytes from it.

impl<'a> Write for &'a Term

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

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

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

Flush 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

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

impl Write for Term

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

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

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

Flush 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

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