Automate keypresses

Automate keypresses

[Christian K]

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Hey,

I'm trying to automate a benchmark for prompt render times with
https://github.com/romkatv/zsh-prompt-benchmark. This requires a pressed
Enter key to work.

Is there a way so simulate key presses without using something like expect?
Ideally this would also work in something like travis.

Best,
Christian

Re: Automate keypresses

[Daniel Shahaf]

Christian K wrote on Sat, 30 Mar 2019 16:49 +00:00:
> I'm trying to automate a benchmark for prompt render times with
> https://github.com/romkatv/zsh-prompt-benchmark. This requires a pressed
> Enter key to work.
> 
> Is there a way so simulate key presses without using something like expect?
> Ideally this would also work in something like travis.

Do you mean this? —

$ { echo PS1=foo; echo exit } | zsh -ifs
bar% %
foo %
$ 

(Those percent signs are from the PROMPT_SP option)

Cheers,

Daniel

Re: Automate keypresses

[Ben Klein]

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I think the real issue here is that such input would need to also execute
the precmd and other shell hooks as if a human were physically pressing
enter.

*\Ben Klein*
About: https://unhexium.net/about/
Other places online: https://unhexium.net/ll/
Contact me securely: https://keybase.io/robobenklein


On Sat, Mar 30, 2019 at 1:56 PM Daniel Shahaf <d.s@daniel.shahaf.name>
wrote:

> Christian K wrote on Sat, 30 Mar 2019 16:49 +00:00:
> > I'm trying to automate a benchmark for prompt render times with
> > https://github.com/romkatv/zsh-prompt-benchmark. This requires a pressed
> > Enter key to work.
> >
> > Is there a way so simulate key presses without using something like
> expect?
> > Ideally this would also work in something like travis.
>
> Do you mean this? —
>
> $ { echo PS1=foo; echo exit } | zsh -ifs
> bar% %
> foo %
> $
>
> (Those percent signs are from the PROMPT_SP option)
>
> Cheers,
>
> Daniel
>

Re: Automate keypresses

[Bart Schaefer]

On Sat, Mar 30, 2019 at 9:49 AM Christian K <syphdias@gmail.com> wrote:
>
> I'm trying to automate a benchmark for prompt render times with
> https://github.com/romkatv/zsh-prompt-benchmark. This requires a pressed
> Enter key to work.
>
> Is there a way so simulate key presses without using something like expect?

Since this is expected to run in an interactive shell, you probably
want something like this:

benchmark-prompt() {
  # adjust number of repeats as necessary
  repeat 100 zle -U $'\n'
  zle -U $'zsh-prompt-benchmark 5 0\n'
}
zle -N benchmark-prompt

Then invoke with M-x benchmark-prompt RET

Re: Automate keypresses

[scowles ckhb.org]

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>     On March 30, 2019 at 9:47 AM Christian K < syphdias@gmail.com mailto:syphdias@gmail.com > wrote:
> 
> 
>     Hey,
> 
>     I'm trying to automate a benchmark for prompt render times with
>     https://github.com/romkatv/zsh-prompt-benchmark. This requires a pressed
>     Enter key to work.
> 
>     Is there a way so simulate key presses without using something like expect?
>     Ideally this would also work in something like travis.
> 
>     Best,
>     Christian
> 

i believe pcmd may be the kind of utility you are looking for.  this is the header info citing attribution:

* pcmd: Push characters into tty input buffer.
*
* 1988-09 John H. DuBois III (john@armory.com)
* 1989-03-13 Last BSD version
* 2002-03-18 UnixWare port. Use getopt.
* 2004-05-10 Linux & MacOS X port. Use termios.

i routinely use this on linux, bsd, macos.  if you have trouble finding a source repository for it, pm me.


s. cowles
scowles at ckhb dot org
Key fingerprint = A156 277B 875A D6E3 A00C 23D9 869E 72BE 1FD3 5B80

Re: Automate keypresses

[Ben Klein]

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My bad - precmd does indeed get executed, but it seems that I am not
getting $RPROMPT rendered when using `zsh -is`.

Also, why do we get PROMPT_SP behaviour there and not in real interactive
use? Is there any option to echo the stdin input when it's being used? (vs
all at once before any prompts are rendered?)

*\Ben Klein*
About: https://unhexium.net/about/
Other places online: https://unhexium.net/ll/
Contact me securely: https://keybase.io/robobenklein


On Sat, Mar 30, 2019 at 4:09 PM Ben Klein <robobenklein@gmail.com> wrote:

> I think the real issue here is that such input would need to also execute
> the precmd and other shell hooks as if a human were physically pressing
> enter.
>
> *\Ben Klein*
> About: https://unhexium.net/about/
> Other places online: https://unhexium.net/ll/
> Contact me securely: https://keybase.io/robobenklein
>
>
> On Sat, Mar 30, 2019 at 1:56 PM Daniel Shahaf <d.s@daniel.shahaf.name>
> wrote:
>
>> Christian K wrote on Sat, 30 Mar 2019 16:49 +00:00:
>> > I'm trying to automate a benchmark for prompt render times with
>> > https://github.com/romkatv/zsh-prompt-benchmark. This requires a
>> pressed
>> > Enter key to work.
>> >
>> > Is there a way so simulate key presses without using something like
>> expect?
>> > Ideally this would also work in something like travis.
>>
>> Do you mean this? —
>>
>> $ { echo PS1=foo; echo exit } | zsh -ifs
>> bar% %
>> foo %
>> $
>>
>> (Those percent signs are from the PROMPT_SP option)
>>
>> Cheers,
>>
>> Daniel
>>
>