Re: conditional include

[Jan-Peter Voigt]

Hi Urs,

you can write a music-function that conditionally includes files.
I use a function to include a file, if it exists. The if statement can 
of course also test for a option with ly:get-option.


Best, Jan-Peter



On 04.02.2013 16:48, Urs Liska wrote:
> Hi list,
>
> I don't know if I _could_ find this info myself, but I'm quite puzzled 
> about it and so I'd rather ask:
>
> I would like to \include files depending on the presence (or absence) 
> of certain command-line options.
> Basically it should do something like:
> - if option A is present then \include A.ily
> - if option B is present then \include B.ily
> - if none of them is present then \include default.ily
>
> Ideally this would be a function that I can define in a separate file 
> and only include this file in my main .ly file.
>
> Background is: A, B and default are style sheets that style the score 
> according to their context (e.g. standalone score <--> part of a book 
> or draft <--> final mode).
> While I know how to deal with this decision by writing both includes 
> in the file and comment out the one I don't need ATM, I would highly 
> prefer to be able to do this with a command line option, so I can run 
> a script on a potentially large number of files. (The only other 
> workaround I can think of now is to let the script actually rewrite 
> the .ly file before compiling it, but I think that's not really elegant).
>
> I'd be grateful about any hints or solutions.
> Best
> Urs
>
> _______________________________________________
> lilypond-user mailing list
> address@hidden
> https://lists.gnu.org/mailman/listinfo/lilypond-user

includeIfExists.ly
Description: Text Data

config.ly
Description: Text Data