On 17 jun 2011, at 15:07, Seva Gluschenko wrote:
> I'd rather rewrote it as follows:
>
> classes:
> 'PBS_reg' expression => regcmp(".*r[0-9]+n[0-9].*");
> 'PBS_ok' not => classify("gb-r7n1.irc.sara.nl");
> 'PBS_MOM' and => { "PBS_ok", "PBS_reg", "${sys.host}" };
>
> 2011/6/17 Jesse Becker <becker...@mail.nih.gov>:
>> On Fri, Jun 17, 2011 at 05:25:44AM -0400, Bas van der Vlies wrote:
>>> I want to define a classs like this:
>>> classes:
>>> "PBS_MOM" and => { !classify("gb-r7n1.irc.sara.nl"), regcmp(
>>> ".*r[0-9]+n[0-9].*", "$(sys.host)" ) };
>>>
>>> This is not a valid syntax. Is it possible to set a class and use the 'not'
>>> operator? For me it would be useful or are there other ways to accomplish
>>> this?
>>>
>>> PS) I used this syntax a lot in cf2 to define classes.
>>
>> I had to do something similar, and I think that I wound up breaking it
>> into what I consider "interstitial classes" (i.e. classes that aren't
>> used for anything other than constructing other classes, in order to get
>> around syntax limitations).
>>
>> In your example, I think that this would achive what you want (untested):
>>
>> classes:
>> 'PBS_dom' expression => classify("gb-r7n1.irc.sara.nl");
>> 'PBS_reg' expression => regcmp(".*r[0-9]+n[0-9].*");
>> 'PBS_MOM' expression => "!PBS_dom.PBS_reg.${sys.host}"
>>
>> Of course, the ability to nest the various and{}, or{}, not{}, xor{}
>> expressions would be nice.
>>
>> Alternately, implement a "not()" function, independent of the "not{}"
>> classes construct.
>>
Thanks for the answers. I will do some experiments and post the solution. I
still have some old syntax from cf1/cf2 in my head. Have to get rid of it ;-)
PS) The regcmp is against $(sys.host) .
--
Bas van der Vlies
b...@sara.nl
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