Struct mortal::terminal::TerminalReadGuard

pub struct TerminalReadGuard<'a>(_);

Holds an exclusive lock for read operations on a Terminal

See Terminal documentation for details on locking.

Implementations

impl<'a> TerminalReadGuard<'a>

pub fn prepare(&mut self, config: PrepareConfig) -> Result<PrepareState>

Prepares the terminal to read input.

When reading operations have concluded, restore should be called with the resulting PrepareState value to restore the terminal to its previous state.

This method may be called more than once before a corresponding restore call. However, each restore call must receive the most recently created PrepareState value.

See PrepareConfig for details.

Locking

This method internally acquires the Terminal write lock.

If the write lock is already held by the current thread, call prepare_with_lock, in order to prevent deadlocks.

pub fn prepare_with_lock(
    &mut self,
    writer: &mut TerminalWriteGuard<'_>,
    config: PrepareConfig
) -> Result<PrepareState>

Performs terminal preparation using both Terminal locks.

pub fn restore(&mut self, state: PrepareState) -> Result<()>

Restores the terminal to its previous state.

Locking

This method internally acquires the Terminal write lock.

If the write lock is already held by the current thread, call restore_with_lock, in order to prevent deadlocks.

pub fn restore_with_lock(
    &mut self,
    writer: &mut TerminalWriteGuard<'_>,
    state: PrepareState
) -> Result<()>

Performs terminal state restoration using both Terminal locks.

pub fn wait_event(&mut self, timeout: Option<Duration>) -> Result<bool>

Waits for an event from the terminal.

Returns Ok(false) if timeout elapses without an event occurring.

If timeout is None, this method will wait indefinitely.

pub fn read_event(&mut self, timeout: Option<Duration>) -> Result<Option<Event>>

Waits for input and reads an event from the terminal.

Returns Ok(None) if timeout elapses without an event occurring.

If timeout is None, this method will wait indefinitely.

Trait Implementations

impl<'a> TerminalExt for TerminalReadGuard<'a>

fn read_raw(
    &mut self,
    buf: &mut [u8],
    timeout: Option<Duration>
) -> Result<Option<Event>>

Reads raw data from the terminal.