tagnavi logical OR?

[lexicon]

Hi All-

Does tagnavi.config support an OR operator?

Building on this great tagnavi_custom.config that you can see here:

#! rockbox/tagbrowser/2.0
# by bascule from roolku v.0.1
#from http://forums.rockbox.org/index.php?topic=6661.30


I want to be able to do this:

"A"   -> artist ? artist ^ "A" OR artist ^ "The A" -> album  -> title = "f_browse"
...B OR The B
...C OR The C
etc.

so that "The" is effectively ignored and grouped accordingly.

i.e.
Artist Menu, Choose "C", and be presented with:
Cardigans
The Clash
Corb Lund

There is an & operator, but I don't see an OR. If not, I believe it would be a valid (and easy) feature request - any comments?

There used to be an "ignore the" patch, but I can't find it, and I assume it would be way out of sync with all the recent upadtes these last few months.

Thanks.

[roolku]

Does tagnavi.config support an OR operator?

No.

There is an & operator, but I don't see an OR. If not, I believe it would be a valid (and easy) feature request - any comments?

With the way the engine is written (incrementally reducing the result set) it is very difficult to add an OR operator.  However it is a very resource efficient implementation, so I don't think it is likely to be changed.

[lexicon]

ok, thanks for the answer. too bad, but I understand.

p.s. Thanks for the great config file, too!

[bascule]

p.s. Thanks for the great config file, too!

No problem

I wrote the config file that way specifically because there is no OR operator. The only way is my (very slightly clunky) grouping of all 'The...' artists together. It works for me, though, and I'm glad it mostly works for you.

[lexicon]

I have an idea... roolku   ...

I see you made a patch that got accepted @ (one_of).

What about a new operator "begins_with_one_of"?

"A"   -> artist ? artist $ "A|The A" -> album  -> title = "f_browse"

Then tagnavi could easily handle the "The " issue, or "A ", or similar for any other language, too (provided the first-level A,B,C...menus were used like you guys did).

Thoughts?

[bascule]

I have an idea... roolku  ...

I see you made a patch that got accepted @ (one_of).

What about a new operator "begins_with_one_of"?

"A"   -> artist ? artist $ "A|The A" -> album  -> title = "f_browse"

Then tagnavi could easily handle the "The " issue, or "A ", or similar for any other language, too (provided the first-level A,B,C...menus were used like you guys did).

Thoughts?

I think someone did; trawl through the tag cache threads, I'm sure there was a mention of another patch (never committed) that did that very thing.

A more flexible solution would be the ability to combine operators:

"A"   -> artist ? artist ^@ "A|The A" -> album  -> title = "f_browse" (starts with one-of...)
"blah"   -> album ? filename !$@ "mp3|ogg" -> album  -> title = "f_browse" (does not end with one-of...)

[roolku]

I see you made a patch that got accepted @ (one_of).

What about a new operator "begins_with_one_of"?

I already made one.

But the approach has a problem with the letter T.

[lexicon]

bascule:
combining operators, yeah, that was my first thought, too. That would open up a lot of possibilities

roolku:
problem with T? Why, because 'The' starts with 'T'? I can't quite figure out the logic breakdown - do you think there is a solution (even if it is a special case)?


Well, in the meantime, I think I'll try hijacking the Composer field. Just put an A,B,C,... in there and base the filters off that.

e.g.
ABBA  - Composer = A
The Arcade Fire - Composer = A