implementation of xpath in ruby?

Dear Friends,

i need to implement xpath in my parser class. I have implemented a new
parser which parses xml document. I have used token types to parse xml
like,

while parser.next

if parser.token_type == tag_start
parser.tag
end

if parser.token_type == tag_end
parser.tag_end
end
end

so a token_type method returns token types like tag_start, tag_end,
comment, pi etc and tag method returns the tag start and tag_end method
returns the tag end of an xml document.

now i need to implement xpath in my parser class. I need to navigate the
xml document using xpath like,

while parser.next!

parser.path( 'book/book-name' ) do

end

end

could anyone help me with some solution to implement xpath in my parser
class.I don't want to use REXML or HPRICOT. i want to create my own
methods which does the above.

Thanks in advance

Regards,
Martin
--
Posted via http://www.ruby-forum.com/.

.

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