[liblouis-liblouisxml] Re: LibLouis bug with largesign
- From: Keith Creasy <kcreasy@xxxxxxx>
- To: "liblouis-liblouisxml@xxxxxxxxxxxxx" <liblouis-liblouisxml@xxxxxxxxxxxxx>
- Date: Wed, 12 Mar 2014 11:38:59 +0000
Michael.
Great work finding the problem.
Using 0xff to demark segments seems like a hack really. For one thing it
assumes I suppose that that value isn't used for something else.
The problem is the need to translate in context but keep the Braille associated
with the correct text node. At the moment I can't think of a fool-proof way of
doing that without such a delimiter.
Maybe John can do something that prevents LibLouis from stripping the delimiter.
-----Original Message-----
From: liblouis-liblouisxml-bounce@xxxxxxxxxxxxx
[mailto:liblouis-liblouisxml-bounce@xxxxxxxxxxxxx] On Behalf Of Michael Whapples
Sent: Wednesday, March 12, 2014 7:22 AM
To: liblouis-liblouisxml@xxxxxxxxxxxxx; brailleblaster@xxxxxxxxxxxxx
Subject: [liblouis-liblouisxml] LibLouis bug with largesign
Hello,
In tracking down the bug where liblouisutdml is putting the wrong Braille
content in brl nodes, I have now worked out the actual code which is causing
this issue.
Basically what seems to be the problem is that LibLouisUTDML processes a
paragraph by adding each text segment of the paragraph into a single buffer,
separating the segment with \xffff characters. Once the buffer contains the
full paragraph text it translates it in one go, and then splits the text into
the segments by searching for \xffff.
The problem is that if one has text which gets processed by a largesign optcode
rule either side of the \xffff end segment separator (eg. "and
\xffffthe") then liblouis will remove the \xffff from between the largesign
translations. Thus now when liblouisutdml takes the translation and splits it
into segments for inserting into the appropriate brl nodes it will miss one of
the split points.
Could someone point me at the code in liblouis which strips the characters
between largesign words. Then I could make a fix fairly quickly.
I guess a longer term question I want to raise is whether this way of
processing paragraphs is really a good plan?
Michael Whapples
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
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