Re: Problems with syscall <async>

On Fri, Jul 18, 2008 at 2:26 PM, Bill Yerazunis <[email protected]> wrote:
> (and here I was, fixing a little syntax gotcha in "isolate" and
> "syscall".  The issue was that
>
>  syscall / \/etc\/usr\/local\/bin\/blah/
>
> is highly error prone; the callee isn't even really a pattern, so
> the new version allows boxes as well as slashes for the thing to run:
>
>  syscall [ /etc/usr/local/bin/blah ] ( :my_input: ) ( :my_output:)
>
> This will be up soonish; the old format with slashes is still allowed.

Ah, looks good (a welcome deviation for the standard purpose of the []
brackets, but what's a man to do?).

BTW: I had a scripted 'fix' for this in a my extra test scripts:
basically it's indirect use of the [..] brackets. See copy of test
script below: track the construction of the :crm_exe: variable. The
@-delimited items in there are set by the ./configure script - which
doesn't do extra '/' escaping when substituting path variables. Tested
with GerH crm114, which validates script statements more stringently,
so commented-out items may or may not work on vanilla crm114.

Test script showing 'old way':

----------------------------------
#! @abs_top_builddir@/src/crm114
#
# See extra warnings at the bottom of this script
#
window
{
	isolate (:count:) /10000/
	isolate (:crm_exe:) //
	# translate () [text] // // --> error report (good work, but not
really what I was looking for right now.
	# translate (:crm_exe:) [@abs_top_builddir@/src/crm114] // //
	# and another error for this one:
	# match (:crm_exe:) [@abs_top_builddir@/src/crm114] /.*/
	# so we end up with the Final Solution - which is a wicked hack
	call /:cvt:/ (:crm_exe:) [@abs_top_builddir@/src/crm114]

	output /\n ----- running :*:count: syscalls (:*:crm_exe:) to see the
timing -----\n/
	{
  		syscall /:*:crm_exe: '-{ window; }'/
		eval (:count:) /:@::*:count:-1:/
	        # output / :*:count: /
	        # output /./
		eval /:@::*:count:>0:/
		liaf;
	}
	output /\n ----- done -----\n/

	exit /0/;
}

#
# as the QUICKREF says: variables are expanded and concatenated in call [...]
# and fed into this label (:arg:). Yay! EXACTLY what we need for unescaped-/
# challenged file paths!
#
:cvt: (:tmp:)
{
	return /:*:tmp:/;
}


#
# ============================================================================
----------------------------------

-- 
Met vriendelijke groeten / Best regards,

Ger Hobbelt

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 http://www.hebbut.net/
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