Write to stdin, read from stdout of a spawn command (a library)

[Jon Degenhardt]

On Wednesday, 23 January 2019 at 23:23:47 UTC, Victor Porton 
wrote:
> On Wednesday, 23 January 2019 at 22:51:45 UTC, Victor Porton 
> wrote:
>> I want to write to stdin and read from stdout of an OS command 
>> I spawn without deadlocks. (I have a string to write to stdin 
>> and want to read its stdout as a string.)
>>
>> Is there a ready D library for this?
>>
>> I wrote a C library for this and consider to port to D (either 
>> as bindings or as a rewrite):
>>
>> https://github.com/vporton/libcomcom
>
> By the way, is it worth to rewrite this using fibers?
>
> Fibers have the advantage that it becomes possible to run 
> several spawn commands simultaneously. However, I suspect that 
> usage of fibers may make the code even less efficient than the 
> current approach which passes input and output as one string 
> write/read operation, without any split of data into several 
> I/O operations.
>
> What do you think?

You've probably looked at std.process 
(https://dlang.org/phobos/std_process.html), but in case not, 
take a look, it may contain the building blocks you need.

--Jon