Re: How to read a string output with `open-input-pipe` on Mac OS?

[Panisuan Chasinga]

Thanks for sharing the code. However, after running the function on any
command like `ls` or `date`, the function only returns two #<eof>. I got an
#<eof> too with this code:

 (define (test-read)
   (let* ((p (open-input-pipe "ls"))
             (str (read-delimited "" p)))
     (close-port p)
     str))

(test-read)

I'm now almost positive this might be a Mac OS-related bug.




On Tue, Oct 10, 2023 at 3:41 AM Zelphir Kaltstahl <
zelphirkaltstahl@posteo.de> wrote:

> On 10/10/23 02:49, Panisuan Chasinga wrote:
> > Hi list, I want to read a string output using
> `ice-9/popen/open-input-pipe`
> > but somehow always got an empty string. Here is my test code:
> >
> >
> > (use-modules (ice-9 popen))
> > (use-modules (ice-9 textual-ports))
> >
> > (define (test-read-port)
> >    (let* ((port (open-input-pipe "ls"))
> >             (str (get-string-all p)))
> >       (close-port p)
> >       str))
> >
> >
> > I was able to read from a file with `open-input-file`, but not
> > `open-input-pipe` with any command. Running `(system "ls")` seemed to
> work
> > just fine.
>
> Hello Panisuan,
>
> perhaps this code can help you as well:
>
> https://notabug.org/ZelphirKaltstahl/guile-examples/src/22bf7be3ae46a7b520c1482ab80985bfbdae6eb6/input-output/stdout-stderr.scm
>
> It handles also error output.
>
> Best regards,
> Zelphir
>
> --
> repositories: https://notabug.org/ZelphirKaltstahl
>
>