[edk2-devel] Shell feature?

[Carsey, Jaben]

Andrew

You can already add a command via a driver (including a driver's library). Check into the Dynamic Commands in the shell spec.

Associating a file type with a command, basically if the first thing on the command line is a file of that type, then prepend the command and re-process the line, is very doable. It's almost like the alias feature that already exists.

I do agree with Tim that we should do a spec update, but concurrent development of code and spec seems required to prevent re-doing the spec.

-Jaben

> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Jim
> Dailey
> Sent: Tuesday, February 11, 2020 1:31 PM
> To: devel at edk2.groups.io
> Cc: tim.lewis at insyde.com; afish at apple.com
> Subject: Re: [edk2-devel] Shell feature?
> 
> Andrew,
> 
> Granted such a feature would be nice, but it seems like it might be a fair
> amount of trouble just to avoid typing "python3", which could be aliased to
> something as short a "p".
> 
> Jim
> 
> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Tim
> Lewis
> Sent: Tuesday, February 11, 2020 2:28 PM
> To: devel at edk2.groups.io; afish at apple.com
> Subject: Re: [edk2-devel] Shell feature?
> 
> 
> [EXTERNAL EMAIL]
> 
> Andrew --
> 
> I think this is a good idea, but I think this is probably a shell spec issue
> because I don't want competing, incompatible implementations.
> 
> A few other issues: I think there is a persistence issue (similar to shell
> variables) so that the change could be installed and survive a reboot. I also
> think there can be a simple shell command that manages extensions (so that
> they can be installed by a script)
> 
> Tim
> 
> -----Original Message-----
> From: devel at edk2.groups.io <devel at edk2.groups.io> On Behalf Of Andrew
> Fish via Groups.Io
> Sent: Monday, February 10, 2020 12:12 PM
> To: devel at edk2.groups.io
> Subject: [edk2-devel] Shell feature?
> 
> I wanted to start a conversation on the mailing list prior to writing up a BZ, to
> make sure I'm not missing anything, or in case there is a better way to
> implement this.
> 
> I was thinking it would be good to have a Shell API that lets you associate a
> file type with an internal or external shell command. The Idea would be to
> pre-pend the internal/external shell command to the file name and also pass
> the arguments.
> 
> So this:
> fs0:>dump.py 1  2 3
> 
> Becomes:
> fs0:>python3.efi dump.py 1  2 3
> 
> Basically you just need an API like:
> 
> ShellAddScriptingLanguage (L".py", L"python3.efi");
> 
> Seems like this could just plug into the Shell via a ShellExecute(). So for
> example you could make Python a UEFI Shell command via a library and that
> library constructor could also teach the shell that a .py file could be an
> executable?
> 
> Thanks,
> 
> Andrew Fish
> 
> 
> 
> 
> 
> 
> 
> 


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