On 6/10/22 10:37, Chris Katko wrote:
> I want to pipe in string data to a shell/commandline program, then
> retrieve the output. But the documentation I read appears to only show
> usage for 'Files' for stdin/stdout/stderr.
>
> ala something like this:
> ````D
> string input = "hello\nworld";
> string output;
> runProcess("grep hello", input, output);
> assert(output = "hello");
> ````

  https://dlang.org/library/std/process/pipe_process.html

Ali

On 6/10/22 10:40, Ali Çehreli wrote:

>    https://dlang.org/library/std/process/pipe_process.html

I realized you may be happier with the following if all you need is stdout:

  https://dlang.org/library/std/process/execute.html
  https://dlang.org/library/std/process/execute_shell.html

Ali

On Friday, 10 June 2022 at 17:49:20 UTC, Ali Çehreli wrote:
> On 6/10/22 10:40, Ali Çehreli wrote:
>
> >    https://dlang.org/library/std/process/pipe_process.html
>
> I realized you may be happier with the following if all you need is stdout:
>
>   https://dlang.org/library/std/process/execute.html
>   https://dlang.org/library/std/process/execute_shell.html
>
> Ali

pipeShell works great! It even allowed me to keep the process running "live" in a streaming mode which was going to be a later modification so I don't have to keep invoking it over and over.

I'm using it at the moment, to run a prettyprinter for a console output, but one prettyprinter just straight up calls Python Pygments which can run in streaming mode and while it was surprisingly fast being called for every single line, it's certainly going to be faster without the overhead of constantly spawning a python instance.

Thanks!