Apache Jelly grammar and parser

[Alceu Rodrigues de Freitas Junior <gl...@yahoo.com.br.INVALID>]

Greetings,

My name is Alceu and I'm new in this list.

I reached here in the hope that I can get some pointers about writing a 
parser for Apache Jelly files.

I've being working in a CLI to parse the properties and Jelly files from 
the Jenkins project, in order to help the translation process from 
English to other languages.

The project is here: 
https://github.com/glasswalk3r/jenkins-translation-tool.

The CLI is still using regular expressions for the Jelly parsing and 
I've struggling to replace that with proper parsers.

I partially reached that state by at least introducing a XML parser and 
than extracting the Jelly strings. The thing is, Jelly is complex enough 
that regular expression is still not a good tool for parsing: I've being 
find corner cases that are not being covered by an already complex 
regular expression.

I decided that is time to stop and try to build a proper grammar to 
parse Jelly.

Now the problem is that I am not:

- a Java programmer
- doesn't have real experience building parsers based on grammars
- acquainted with the Jelly project itself 
(https://commons.apache.org/proper/commons-jelly/)

If any of you could give some points about finding where is the Jelly 
grammar defined, I could try to use Antlr project to generate a grammar 
that can be used with one of the several grammars distributions 
available to Perl.

Or, if you have a better suggestion than trying to use a grammar, I'm 
also open to it.

Thanks in advance,

Alceu

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