[liblouis-liblouisxml] Re: Very preliminary documentation of scripting language
- From: Mesar Hameed <mesar.hameed@xxxxxxxxx>
- To: liblouis-liblouisxml@xxxxxxxxxxxxx
- Date: Tue, 24 Jul 2012 09:41:02 +0100
Hi John,
Would it be possible to expand on this documentation.
examples with a small amount of commentary would also be useful.
I am happy to go through and put things in doc/liblouis.texi if I have
something to go on.
Thanks.
-- Mesar
On Thu 29/03/12,11:37, John J. Boyer wrote:
> Below is a very preliminary documentation of the liblouis scripting
> language. It is little more than a description and a list of keywords
> and symbols. Future revisions of the scripting language will introduce
> features that perform functions that cannot be handled by present
> liblouis algorithms, such as placing capitalization and emphasis
> indicators after the last word of a phrase.
>
> In the process of implementing the scripting language the older
> multipass opcodes were also reimplemented. This introduced some bugs.
> Hopefully they are all fixed by now.
>
> -------------------
>
> LIBLOUIS SCRIPT SPECIFICATION
>
> This scripting language provides advanced functionality for the
> multipass opcodes.
> The original multipass language can still be used. Translation tables
> in which it is used should function as expected. The multipass opcodes
> are:
>
> correct, change the input before translation;
> context, use the multipass feature during translation;
> pass2, perform additional processing after translation;
> pass3 pass4, still more processing passes.
>
> To use the scripting loanguage place the word "script" after the opcode,
> proceeded and followed by whitespace. A single script statement may be
> up to 500 characters in length. If it is too long to fit on a single
> line it may be continued on additional lines by placing a backslash (\)
> at the end of a line.
>
> A script statement consists of three parts: a declarative part that can
> be used to give names to variables; an if part; and a then part.
>
> There are 50 integer variables that can be used to record the results
> of one script statement for use in another. They can be given names and
> operated on with the plus (+) and minus symbols. They can be compared to
> numbers using = != <= and >=
>
> Keywords and Symbols
>
> Below are the keywords and symbols used in the scripting language, with
> a brief explanation of each.
>
> "attr",
> "back",
> "def",
> "emph",
> "find",
> "first",
> "group",
> "last",
> "mark",
> "rep",
> "repcopy",
> "repgroup",
> "repomit",
> "script",
> "swap",
> "\"",
> "@",
> "(",
> ")",
> ",",
> "#",
> "+",
> "-",
> "=",
> "<",
> ">",
> "!="
> "<=",
> ">=",
> "!",
>
> --
> 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
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