Aleksey/Seva-
So you want to recreate "make" in CFEngine? :-)
ifvarclass() says "if the named class exists, do something"
fileexists() says "if the named file exists, make the class expression 'true'"
and that is used to create a named class.
The two are incompatible (because the latter is only used in class promises).
Your example isn't clear, as it appears to use the target as both a directory
and a file. What you probably want to do is use a transformer attribute. But
maybe not :-)
-Dan
On Jun 23, 2011, at 6:52 PM, Aleksey Tsalolikhin wrote:
> On Fri, Apr 23, 2010 at 3:38 AM, Сева Глущенко
> <seva.glusche...@gmail.com> wrote:
>> Hello folks,
>>
>> I'm trying to make a promise which creates files when their
>> counterparts not exist yet. But when I'm writing something like
>>
>> compile::
>> "$(base)/(.*)/.compile"
>> create => "true",
>> ifvarclass => !canonify(fileexists("$(dst)/$(match.1)")),
>> comment => "force compiler execution";
>>
>> The Cfengine reports syntax error on that. Am I missed something? Is
>> there a way to accomplish this task at all?
>
> Hi.
>
> I've just requested an ifnotvarclass attribute, which would resolve
> this cleanly, without requiring a separate promise to invert the class.
>
> https://cfengine.com/bugtracker/view.php?id=123
>
> I've put it in as a note on Seva's ticket, rather than a separate
> feature request ticket.
>
> Please consider it?
>
> Cheers,
> Aleksey
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