[liblouis-liblouisxml] Re: Hyphenation
- From: Michael Whapples <mwhapples@xxxxxxx>
- To: liblouis-liblouisxml@xxxxxxxxxxxxx
- Date: Fri, 1 Jun 2012 09:21:51 +0100
The second idea sounds like a good approach (translate, use inpos to get the
print word at the end of the line, hyphenate that and then work out where the
hyphen should be in Braille, I guess outpost can be used for that).
One question, is there any case in Braille where a hyphen could be
mid-contraction and so alter the Braille cells output? Might the hyphenated
word need retranslating?
Michael Whapples
On 1 Jun 2012, at 04:42, John J. Boyer wrote:
> Bert Frees and I have discussed this off-list to some extent. I think it
> is now time to submit some ideas to the wider community. Hyphenation is
> important in languages with many long words.
>
> One idea is to pre-hyphenate text before sending it to liblouis. This
> would be done by having liblouisutdml run a hyphenation algorithm,
> probably a version of the one now used in liblouis. This would generate
> an array similar to the present liblouis typeform parameter. This would
> be a char array and a bit would be set where a hyphen was permissible.
> This array would be passed to a new liblouis function called
> lou_translatePrehyphenated along with the usual parameters.
>
> However, it seems to me that prehyphenating every word is a lot of
> unnecessary processing. Hyphenation is needed only at the end of lines
> and perhaps in a few other situations. Since the inputPos array
> generated by liblouis is now accurate, it can be used to find the print
> word corresponding to the last word that does not fit on a line. This
> word could then be passed to lou_hyphenate for hyphenation and
> retranslation with hyphenation indicators as this function now does.
> However, the back-translation step in lou_hyphenate would be eliminated,
> since it is unreliable. After lou_hyphenate returns liblouisutdml would
> chose the most suitable hyphenation point.
>
> Thanks,
> John
>
> --
> John J. Boyer; President, Chief Software Developer
> Abilitiessoft, Inc.
> http://www.abilitiessoft.com
> Madison, Wisconsin USA
> Developing software for people with disabilities
>
> For a description of the software, to download it and links to
> project pages go to http://www.abilitiessoft.com
For a description of the software, to download it and links to
project pages go to http://www.abilitiessoft.com
Other related posts:
