Add command to get cursor location

[noelwelsh]

This can be done with the escape code ESC[6n. The terminal will respond with a code of the form ESC[r;cR, where r is the row and c is the column.

I don't know of any way to do this via the termios API. The implementation of the Termion method could provide some inspiration.

[kapunga]

This is one of reasons I thought having a peek implementation might be a good idea. For these situations where you have to send a command and get a response, you could peek to see if the escape code shows up. So something like this:

• Send the location request.
• Peek up to some duration for the response.
• Return the response.
• Ignore the response during normal reads.

It seems to me that when you send ESC[6n, there is no guarantee that the next thing you receive will be ESC[r;cR, so you will want to check without clearing the buffer in contains input other than the cursor location response.

[noelwelsh]

👍 Good point.