Regex with named capture groups getting all matches in Ruby

Question

I have a string:

s=\"123--abc,123--abc,123--abc\"

I tried using Ruby 1.9\'s new feature \"named groups\" to fetch all named group info:

Answer 1

You can extract the used variables from the regexp using names method. So what I did is, I used regular scan method to get the matches, then zipped names and every match to create a Hash.

class String
  def scan2(regexp)
    names = regexp.names
    scan(regexp).collect do |match|
      Hash[names.zip(match)]
    end
  end
end

Usage:

>> "aaa http://www.google.com.tr aaa https://www.yahoo.com.tr ffffd".scan2 /(?(?https?):\/\/[\S]+)/
=> [{"url"=>"http://www.google.com.tr", "protocol"=>"http"}, {"url"=>"https://www.yahoo.com.tr", "protocol"=>"https"}]