Exclude category exception?

[Arthur Murray]

Thanks for the details.  The use case was for the webpvr frontend,
get_iplayer.cgi which sends the parameters at once.

I want it to return a list of all programs except certain channels
(CBBC,CBeebies,Alba) and certain categories(Children's,Primary,Sport)
unless the category is Golf.   Doesn't sound possible.


On Tue, Sep 4, 2012 at 4:34 AM, dinkypumpkin <dinkypumpkin at gmail.com> wrote:
> On 04/09/2012 01:42, Arthur Murray wrote:
>>
>> As an example, would it be possible for get_iplayer to
>> "excludecategory" programmes with "Sport" category, unless it was
>> Golf?  Is there some regex magic that would work?
>
>
> Not exactly, but it should be good enough to just use --category=golf. There
> may be golf programmes that are not also sport programmes, but I imagine
> that will happen very rarely.
>
> Grisly detail:  Programme categories are concatenated into a comma-separated
> string which is matched against each of the comma-separated regular
> expressions you supply to --category and --exclude-category.  Although the
> BBC taxonomy has a hierarchical structure, which leads to a generally
> consistent ordering of categories in the concatenated string, with more
> specific content categories coming before their more general parent
> categories.  In this example, Golf will come before Sport in the
> concatenated categories list.  However, it wouldn't be enough to use
> --category="golf,sport" because get_iplayer will retrieve programmes that
> match either of those categories.  You could do something like
> --category="golf.*sport" to get only sport programmes that are also golf
> programmes.  And if you're mildly insane, you could use
> --category="(^|\x2C)golf\x2C.*\x2Csport(\x2C|$)" be absolutely sure that you
> only retrieve programmes with categories that exactly match both "golf" and
> "sport".  The \x2C represents an embedded comma since the regex will be
> split on commas before running the search.