[liblouis-liblouisxml] Re: Regex question
- From: Ken Perry <kperry@xxxxxxx>
- To: "liblouis-liblouisxml@xxxxxxxxxxxxx" <liblouis-liblouisxml@xxxxxxxxxxxxx>
- Date: Sun, 27 Oct 2013 01:06:48 +0000
Remember I have not been talking about emphasis when I talk about regex there
are other rules that I am thinking about. For example knowing that if a word
ends in 's the word is the match before it or things like that. You will still
need an action to work on the text you find with the regex. The thing that the
regex gives you though is matching groupings that can be manipulated in the
function or action.
I think with your emphasis problem I would rather write a grammar to handle
that and let a parser generator handle it. If I had to write it by hand I
would probably use some kind of stack base recursion to move through the text.
And depending if I am in a block of empisised text do one set of substitutions
and if not do the other. Same goes for the capital letters I would push down
each character after I hit the first capital and keep a count. When I hit a
terminator I could return the whole stack with the correct tags and continue
on.
-----Original Message-----
From: liblouis-liblouisxml-bounce@xxxxxxxxxxxxx
[mailto:liblouis-liblouisxml-bounce@xxxxxxxxxxxxx] On Behalf Of Susan Jolly
Sent: Saturday, October 26, 2013 4:55 PM
To: liblouis-liblouisxml@xxxxxxxxxxxxx
Subject: [liblouis-liblouisxml] Regex question
I'm very familiar with regex's and have made significant use of the powerful
regex facility in Java. I understand how a regex can be used to identify the
print item or items to which a braille translation action applies. But I don't
off the top of my head see how to use a regex to represent the corresponding
action.
Perhaps someone can give me an explicit example that would handle the EBAE
rules that apply to the use of contractions and indicators in what EBAE refers
to as partially emphasized words. These are words that are either mixed case
(other than titlecase) or words where special typeforms apply to only some of
the letters.
Use of contractions. Contractions may not be used in any partially emphasized
word.
Use of capitalization indicators. (Note that more than one of these rules can
apply to a single word.) (1)A sequence of two more trailing capital letters is
to be preceded by the double capital sign.
(2)Each sequence of two or more non-trailing capital letters is to be preceded
by the double capital sign and followed by the termination sign.
(3)Each individual capital letter is to be preceded by the single capital sign.
Use of typeform indicators.
(1)One or more trailing emphasized letters is to be preceded by the appropriate
typeform indicator.
(2)One or more non-trailing emphasized letters is to be preceded by the
appropriate typeform indicator and followed by the termination sign.
(Note that EBAE uses the same typeform indicators for a single symbol or a word
whereas UEB and some other codes have different indicators for a single symbol
and for a sequence.)
Susan
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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