Re: regexp(ing) Backus-Naurish expressions ...
On 3/9/2013 9:27 PM, qwertmonkey@syberianoutpost.ru wrote:
I need to set up some code's running context via properties files and I want
to make sure that users don't get too playful messing with them, because that
could alter results greatly and in unexpected ways (they must probably won't
be able to make sense of and then they would bother the hell out of you)
~
So, I must do some sanity check the running parameters if entered via the
command prompt or if the defaults are used from the properties files
~
I am telling you all of that because you many know of libraries to do such
thing
~
I think one possible way to do that is via a regexp, which should match all
the options included in the test array aISAr
~
One of the problems I am having is that if you enter as options say [true|t],
the matcher would match just the "t" of "true" and I want for "true" to be
actually matched another one is that, say, " true ", should be matched, as well
as "false [ nix |mac| windows ] line.separator" ...
~
Any ideas you would share?
I would do it as:
- switch from properties to XML
- define a schema for the XML with strict restrictions on data
- let the application parse that with a validating parser and
read it into some config object, this will ensure that required
information is there and that the data types are correct
- let the application apply business validation rules in Java code
on the config objects - this will ensure that the various
information is consistent
Arne
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