public async Task <ConsoleKeyInfo> ReadKeyAsync(CancellationToken cancellationToken)
{
await s_readKeyHandle.WaitAsync(cancellationToken);
// I tried to replace this library with a call to `stty -echo`, but unfortunately
// the library also sets up allowing backspace to trigger `Console.KeyAvailable`.
InputEcho.Disable();
try
{
while (!await WaitForKeyAvailableAsync(cancellationToken))
{
;
}
}
finally
{
InputEcho.Enable();
s_readKeyHandle.Release();
}
await s_stdInHandle.WaitAsync(cancellationToken);
try
{
return(System.Console.ReadKey(intercept: true));
}
finally
{
s_stdInHandle.Release();
}
}
private static async Task WaitForKeyAvailableAsync(CancellationToken cancellationToken)
{
InputEcho.Disable();
try
{
while (!Console.KeyAvailable)
{
await Task.Delay(50, cancellationToken);
}
}
finally
{
InputEcho.Enable();
}
}