taskText Extractor TXR - Tasks: task #11433, Implement a way for multiple...


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task #11433: Implement a way for multiple output blocks to go to the same stream.

Submitted by:  Kaz Kylheku <kkylheku>
Submitted on:  Thu 13 Oct 2011 12:36:07 AM UTC  
Should Start On:  Wed 12 Oct 2011 07:00:00 AM UTC Should be Finished on:  Wed 12 Oct 2011 07:00:00 AM UTC
Category:  None Priority:  5 - Normal
Status:  Done Privacy:  Public
Percent Complete:  100% Assigned to:  Kaz Kylheku <kkylheku>
Open/Closed:  Closed Effort:  1.00

Sat 12 Oct 2013 04:20:59 AM UTC, comment #1:

This is now implemented via the :named, :continue and :finish keywords supported in @(output), and the helper directive @(close).

Kaz Kylheku <kkylheku>
Project AdministratorIn charge of this item.
Thu 13 Oct 2011 12:36:07 AM UTC, original submission:

A TXR query should be able to output data to a stream, then finish the output block and later append more data to the same stream. If the stream is a pipe, the output goes to the same pipe, not to a new instance of the pipe.

The proposal is to allow an output directive to specify (via a keyword) that the open block is connected to a named stream. Another output can specify that it goes to the same stream.

A named stream is not automatically closed at the end of the output block.

A @(close) directive could be provided to explicitly close a named stream. Perhaps an @(open) directive could be provided also.

These names can follow the scope rules common to variable bindings. Possibly, they can be in the same namespace.

Example syntax:

@(output `!tee foo.txt` :named tee)
@(output :into tee)
@(close tee)

Kaz Kylheku <kkylheku>
Project AdministratorIn charge of this item.


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    Follow 5 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    Sat 12 Oct 2013 04:22:54 AM UTC kkylheku Open/ClosedOpen => Closed
    Sat 12 Oct 2013 04:20:59 AM UTC kkylheku StatusNone => Done
        Percent Complete0% => 100%
        Assigned toNone => kkylheku
        Effort16.00 => 1

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