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matz avatar matz commented on June 17, 2024

Sorry, not yet.

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mattn avatar mattn commented on June 17, 2024

it's easy to implement with popen, i guess.

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amiralles avatar amiralles commented on June 17, 2024

Hey @matz! Big fan of your work!

Would the syntax for this feature look something like this?

system('ls') { in, out, err -> ... } | stdout

If so, I could try to implement it. Thanks!

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matz avatar matz commented on June 17, 2024

What I thought was:

spawn("ls") | stdout                           # can be a producer
stream | spawn("grep foo") | stdout  # and also be a filter
stream | spawn("cat > /tmp/a")         # and a consumer

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amiralles avatar amiralles commented on June 17, 2024

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amiralles avatar amiralles commented on June 17, 2024

I managed to implement the first use-case on my fork (and it seems to work fine so far)

spawn("ls") | stdout    # can be a producer

Now I'm stuck at this one:

stream | spawn("grep foo") | stdout  # and also be a filter

As far as I understand, a stream can be a producer, a consumer, or a filter, but not all at the same time. So, the first question is:

Is it possible for the spawn function to produce different kinds of streams based on their usage?

If so, is there a way to identify how the function is being used (maybe based on the stream parameter or something like that)?

Thanks!

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