[antlr-interest] Parsing RTF to Braille

[Salvador Gomez]

Hi Daniel,

you can try out my library JRtfTree (port of NRtfTree in C#). It parses an
RTF document and generates a DOM-like tree. It's not ANTLR but can be
useful.

You can find docs, examples and downloads in:

(Sourceforge) http://nrtftree.sourceforge.net/     (in english)
(My web) JRtfTree: http://www.sgoliver.net/jrtftree.html   (in spanish)
              NRtfTree:
http://www.sgoliver.net/nrtftree.html<http://www.sgoliver.net/jrtftree.html>
(in spanish)


Salva.


On 25/06/07, Daniel Warner <dwarner at uni-paderborn.de> wrote:
>
> Hello,
>
> I'm studying computer sciences and mathematics in Paderborn, and currently
> I'm working on a university project with the goal to transform RTF-documents
> into a text-based representation of braille, called HBS.
>
> The output format HBS is already specified, although there is no grammar
> (it is all in an existing application and I have to reengineer). Lots of
> information in a RTF-document is of course irrelevant for blind people and
> will therefore have to be eliminated. HBS codes a lot of structural
> information but far less layout information, so I will also be faced with
> problems such as: What do I do with footnotes, how should I represent text
> that is colored red (maybe even inconsistently), how can I map layout to
> structure appropriately, etc. just to mention a few.
>
> As I want to implement the RTF-HBS-Parser in Java, I naturally looked for
> parser generators for this language. To me ANTLR v3 seems to be the most
> promising approach in this area, and I really appreciate Prof. Parr for
> publishing his tool under the BSD License.
>
> I already baught his book "The Definitive ANTLR Reference" (and PDF) and
> have a question concerning the "big picture" for my project:
>
> The RTF specification 1.9 from Microsoft is huge. What approach would you
> suggest in parsing RTF with ANTLR to the mentioned text-based representation
> of braille (HBS)?
>
> 1) Use actions in the grammar rules?
> 2) Create an AST from the RTF input and a tree grammar for the AST that
> outputs HBS?
> 3) Use templates?
> 4) Other suggestions?
>
> Thanks a lot in advance for some hints that help me starting off with my
> work,
>
> Daniel Warner
>
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