Re: Re: pandoc/citeproc issues: multiple bibliographies, nocite, citeonly

[Andrea Rossato <andrea.rossato-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>]

On Tue, Nov 23, 2010 at 09:06:32PM -0800, John MacFarlane wrote:
> PS.  I'm sorely tempted to put off implementing these complexities
> til later, and release a simple version of pandoc/citeproc that just
> constructs a bibliography of works cited in the document and puts
> them at the end, more or less the way it does now.  The one twist
> I'd add would be this:  the bibliography is inserted only if the
> document ends with a Header.  That way you could suppress the
> bibliography by not ending with a Header.

If you do not want a bibliography you can just remove the
<bibliography> element from a style. This is the cleaner way to do
it I think.

> We could keep this convention later even if we implemented a
> <references /> element. So existing documents would not break.
> 
> What we'd be missing:
> 
> - ability to have multiple bibliographies
> - ability to include works not cited in bibliographies
> - ability to suppress works cited in bibbliographies
> - ability to filter bibliographies by fields (e.g. source=primary)
> 
> These things would be nice for some users, but they add a lot of
> complexity and could be implemented later.

I'm working to get the filtering options done. citeproc type signature
must be changed and I'd prefer to do it before a new release (since
the API has already been changed).

citeproc would become:

citeproc :: ProcOpts -> Style -> [Reference] -> Citations -> BiblioData

with
data ProcOpts
    = ProcOpts
      { bibOpts :: [BibOpts]
      }

(the record could be extended at a later time). And:

data BibOpts
    = Select  [(String, String)]
    | Include [(String, String)]
    | Exclude [(String, String)]
    | Quash   [(String, String)]

(the tuple is (field,value))

Multiple bibliographies would require calling citeproc for everyone.
This means splitting the pandoc document - in other words, partially
rewriting Pandoc.Biblio.

Can we do it now? If no I'm not going to work on the citeproc side any
longer for the time being.

For the syntax: I like the xml syntax you proposed.

Andrea