Re: [Configobj-develop] [__INCLUDE__] + allow_overrides

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

Michael Foord wrote:
>
>
> ---------- Forwarded message ----------
> From: *Kong-Jei Kuan* <kj...@ho... <mailto:kj...@ho...>>
> Date: 06-Aug-2006 16:55
> Subject: [Configobj-develop] [__INCLUDE__]  +  allow_overrides
> To: con...@li... 
> <mailto:con...@li...>
>
> Hi all,
>
> thanks for the great project! Just like to share some ideas.
>
> Due to a requirement of my personal project, I added an option,
> "allow_overrides", to ConfigObj. The option, if True, allows duplicate
> sections at the same depth and also duplicate scalars in the same 
> section.
> Later scalars of the same name in the same section override earlier ones,
> and later sections of the same name and depth update earlier ones.
> This is done during the parsing of a configuration file.
>
> Then, I added a merge_includes function to configobj.py which 
> basically look
> for special sections named, "__INCLUDE__", and merge the configuration 
> file
> specified by the "file" scalar of that section. The merge is done so that
> all the top level scalars in the included file override the scalars of 
> the
> including section(the section that has the __INCLUDE__ sub section). The
> __INCLUDE__ section is "replace" with sections from the included file. 
> Some
> cares have been taken so that this include feature works with the
> 'allow_overrides' feature in an expected way. For example:
>
Hello Jack,

Thanks for your suggestion and patch.

I've thought about ways of including external files in config files. I 
don't think adding support directly in ConfigObj is the best way. It 
adds complexity to the implementation, syntax and API.

You could write a fairly simple recursive wrapper that checks for the 
presence of '__include__' in sections, and use the section method 
'merge' to achieve the same thing.

All the best,


Fuzzyman
http://www.voidspace.org.uk/python/index.shtml

> #The file "x.ini" is:
> a=1
> b=2
> [sec1]
> c=3
> [[__INCLUDE__]]
> file=inc.ini
> [[sec1.1]]
> d=4
>
> #where the file, "inc.ini " is:
> a=0
> [sec1.1]
> c=5
> d=6
> [sec1.2]
> x=a
> y=b
> z=c
>
> and the result of merge_includes(ConfigObj("x.ini")) is:
>
> a=1
> b=2
> [sec1]
> c=3
> a=0
> [[sec1.1]]
> c=5
> d=4
> [[sec1.2]]
> x=a
> y=b
> z=c
>
> I needed these two features because I would like to include some base
> configuration files in a "child" configuration file but have the child
> override some values defined in the base configurations. I've attached my
> modified(against 4.3.2) configobj.py, which includes the merge_includes
> function and the allow_overrides option to this mail for anyone 
> interested.
>
>
> Best regards,
> Jack
>
>
>
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