[netrexx-pipelines] Reading pipe source from stdin

[Marc R. <re...@gm...>]

I always found it strange that NetRexx Pipelines did not accept its source from stdin, counter-intuitive on *nix.
I've updated runner.nrx to do just that.

Previously, when executing org.netrexx.njpipes.pipes.runner without an argument, a message 'specify a pipeline' was given.
Now, it will read the pipeline from stdin.
Also, a -h option was added, and the parsing of the pipeline options - between () - have been sanitised.

bin/pipe does not have to readline anymore, as runner does it now.
This allows addressing pipelines directly :

<<
$ cat pipetest.nrx

address system

'pipe "(sep ! end %) literal one ! cons%"'

'echo "literal two | cons" | pipe'

'echo "literal three | cons" >pipein.txt'

'pipe -f pipein.txt'


address pipe '(pipetest sep ! end ") literal four ! cons"'

address pipe

'(pipetest sep ! end ") literal five ! cons"'

'(pipetest sep | end ?)'-    -- split lines
'literal six |'-             -- write comments after -
'cons ?'

'(pipetest sep | end ?)'-
'  literal seven '-
'| cons'

$ nrc -exec pipetest
NetRexx portable processor 4.05-alpha build 2,078-20230104-1557
Copyright (c) RexxLA, 2011,2022.   All rights reserved.
Parts Copyright (c) IBM Corporation, 1995,2008.
Program pipetest.nrx
===== Exec: pipetest =====
one
two
three
four
five
six
seven
Processing of 'pipetest.nrx' complete

>>

Mileage on Windows may vary..

Marc