From: Mark Thomas <mark@...>
Date: 2008-11-19T12:16:31+09:00
Subject: Re: ruby global regex question.

On Nov 18, 7:08 pm, knohr <just_a_techie2...@yahoo.com> wrote:
> For the life of me, i can't figure out a ruby equivalent to perl's /g
>
> basically, i want to do the following
>
> while htmlSource=~m/<table>(.*?)<\table>/g do
>    tableSource=$1
>    tableSource=~m/Index (\d+)/
>    indexNumber=$1
>
>    while tableSource=~m/<tr>(.*?)<\/tr>/g do
>       tableRowSource=$1
>       doSomethingWith(tableRowSource, indexNumber)
>    end#while tableSource
>
> end#while htmlSource
>
> I will actually need to pull multiple vars, not just a single one,
> from the regex
> I will need to do the outer loop an unknown amount of times per
> document (0-20) and i will need to loop the inner an unknown amount of
> times (0-29)
>
> Thread safe would be a plus.

Would fast be a plus? No nested loop?

require 'nokogiri'
doc = Nokogiri::HTML(htmlSource)
doc.search('//tr').each do |row|
  index = row.xpath('ancestor::table/*[contains("Index",.)]')
  doSomethingWith(row.text,index[/(\d)/])
end

The location of the element containing the index may have to be
modified.

-- Mark.