emacs-orgmode
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[O] More export filter examples out there?


From: Allen S. Rout
Subject: [O] More export filter examples out there?
Date: Tue, 17 Mar 2015 18:15:49 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.2.0

I'm trying to accomplish a custom export task which I'd hoped to be
pretty simple:  something like:


In each status section, only export the first child headline.


After several dumb ideas, I decided that doing it with a filter was
probably the Right Place.  I built a filter intended to be used on

:filter-parse-tree

and attempted to express:

If you're parent is a headline
and your parent's title is 'Status'
and you're not the first of your siblings

then don't be included.  I've added my malfunctioning filter below,to
clearly display my "thinking".

I don't seem to be able to get the title as a string.  org-export-data
seems to expect a different 'info' than the 'info' present at filter
time.  I get complaints about

org-export-data: Wrong type argument: hash-table-p, nil

if I uncomment the attempt to string compare the title.


I'm finding my experience with XSLT to be a handicap; I bring
expectations to the table that are misguided.  Is there a pretty-printer
or other dump for the export parse tree?   The dump I sometimes get in
*Messages* is not all that readable.

Should I be thinking of this as a parse-table operation, or should I be
reasoning about it from :filter-headline?


More generally, anyone got some art for some similar reconstruction
they've done, which they might like to share?


- Allen S. Rout




(defun ox-asr-only-first-status  ( tree backend info )
  " Arrange that, under headlines marked 'Status', only the first of
them is included.

"
  ( org-element-map tree (remq 'item org-element-all-elements)

    ( lambda (e)
      ( let* ( ( parent       ( org-element-property :parent e) )
               ( first-sib    ( car (org-element-contents parent )))
               ( parent-type  ( org-element-type parent ))
               ( parent-title ( org-element-property :title e))
;              ( pt-string    ( org-export-data parent-title info ))
               )
        
        (if (and
             ( eq parent-type 'headline )
             ( not (eq e first-sib ))
;            ( string= (org-export-data parent-title) "Status")
             )
            ( org-element-set-contents e  "-->" parent-title "<---  "
(org-element-contents e))
          )
        
        )
      )

    )


  tree
  )





reply via email to

[Prev in Thread] Current Thread [Next in Thread]