Re: [Configobj-develop] Getting a "really" parsed version of configspec

[Michael F. <fuz...@vo...>]

On 13/12/2010 08:56, Stefan Parviainen wrote:
> Hi,
>
> I'm writing a graphical editor for configuration files that work with
> configobj. I would like the GUI to take into account what type an
> option has, e.g. if it's an integer with a minimum and a maximum
> specified a slider should be shown while a standard text box is shown
> if no limits are given.
>
> The problem is getting the parameters, such as "min" and "max". I know
> I can parse the spec using ConfigObj and then do a lookup based on the
> option name, but that only results in a string like
> "integer(default=3, min=0, max=5)" which I would then have to parse
> further. Does validate.py provide any help with this or do I need to
> do the parsing myself. I realize that somewhere deep down inside
> validate the values are parsed, but are they exposed to users in any
> way?

Hmm... the "real" parsing of the configspec (pulling out min and max 
values etc) is done, as you guessed, inside validate.py. There is no 
public API for this but you could just "steal" some of the code from there.

The checks come in as strings and they are turned into function name, 
arguments and keyword arguments by Validator.check which calls 
Validator._parse_with_caching.

For example:

validator = Validator()
fun_name, fun_args, fun_kwargs, default = 
validator._parse_with_caching('myfunc(min=3, max=5)')

The keyword arguments, which is what you are after, come back as a 
dictionary.


All the best,

Michael

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