Take input from user during execution of command

[mike-5345]

Hello Daniele,

For my project, some of my commands need to take input from the user during the execution of a command lambda. Is there a way to do this currently?

If not, would this be something you would be interested in adding?

Thanks,
Mike

[daniele77]

Hi Mike.

If you only need local console support, you can use the standard C++ input mechanism (e.g., std::cin, std::getline(), etc). I never tried, but it should work.

Of course, for remote sessions (i.e., telnet sessions) that mechanism cannot work. You would need a new feature (i.e., the command handler should have a new std::istream& in parameter, in addition to the existing one std::ostream& out).
This feature is not an easy one to implement, let me know if it's enough local console support or if you need remote sessions too.

[bohich]

Hello Daniele,

I use local console with (e.g., std::cin, std::getline(), etc).
But when i write anything to terminal some letter are not recorded. After press enter i get ("wrds"), but wrote ("words").
I can elaborate more on the use case if this question is unclear.
Maybe you know how to fix that.

Thanks

[daniele77]

Yes Mike,

actually when using CliLocalTerminalSession, you cannot use std::cin and std::getline() (please see this previous discussion: #173 but also this one: #222).

If you need to take input from the user inside the command handlers, you can consider using CliFileSession instead of CliLocalTerminalSession (see the example simplelocalsession.cpp that comes with the library). However, in this case, you won't have auto-completion and history.

[daniele77]

I've just committed a fix that should enable user keyboard handling on Linux platform as well (commit 17dafd8).
It's the issue #239.
Now you can use std::cin and std::getline inside command handlers (local session only, of course).
Please, see if this solves your problem.