[liblouis-liblouisxml] Re: Question over semantic action file attribute handling
- From: "John J. Boyer" <john.boyer@xxxxxxxxxxxxxxxxx>
- To: liblouis-liblouisxml@xxxxxxxxxxxxx
- Date: Tue, 18 Mar 2014 09:22:35 -0500
The first example of the math element places the sequence 0x1b (escape
character) followed by the letter b at the beginning of the math expression. It
also places the escape character followed by e at
the end. I'm not sure what the second example does. It would be necessary to
try it. As a matter of fact, nemeth.sem should be reviewed in light of the
MathML 2.0 specification, if that is what we are
going to use.
There is a function in the semantics.c module called get_attr_value .
John
On Tue, Mar 18, 2014 at 11:15:49AM +0000, Michael Whapples wrote:
> Hello,
> I am uncertain as to how LibLouisUTDML semantic actions deal with
> attributes.
>
> As an example in nemeth.sem it has the line
> math math \eb,\*\ee
>
> So my understanding of that is that a character (cannot remember its
> actual value) to indicate the beginning of the equation is placed in
> front of the math node content and another character for the end of
> equation is placed after the math node content.
>
> Later on there is a line:
> no math,mode,inline
>
> My question is what this actually means? What will be inserted if I have
> an equation with MathML along the line of <math mode="inline">...</math>
> will it just be the node content as normally done for the no action?
>
> Another question is how one can deal with multiple attributes being
> given on one element, the documentation only discusses about specifying
> one attribute and value pair in the second column.
>
> Another question is how one can use the value of a attribute? One such
> example might be the rowspan attribute on the mtd element where the
> value determines how many rows the cell will span. May be for the
> rowspan example this might be dealt with differently as it would be used
> internally in LibLouisUTDML to work out table formatting, but I am sure
> there are other examples where the value may be a continuous range of
> numeric values which might need to be used to determine output.
>
> Michael Whapples
> For a description of the software, to download it and links to
> project pages go to http://www.abilitiessoft.com
--
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
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