Flowdock
method

process

Importance_0
process(string, current_level=3, counters=[1]) private

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# File railties/guides/rails_guides/indexer.rb, line 21
    def process(string, current_level=3, counters=[1])
      s = StringScanner.new(string)

      level_hash = ActiveSupport::OrderedHash.new

      while !s.eos?
        re = %{^h(\d)(?:\((#.*?)\))?\s*\.\s*(.*)$}
        s.match?(re)
        if matched = s.matched
          matched =~ re
          level, idx, title = $1.to_i, $2, $3.strip

          if level < current_level
            # This is needed. Go figure.
            return level_hash
          elsif level == current_level
            index = counters.join(".")
            idx ||= '#' + title_to_idx(title)

            raise "Parsing Fail" unless @result.sub!(matched, "h#{level}(#{idx}). #{index} #{title}")

            key = {
              :title => title,
              :id => idx
            }
            # Recurse
            counters << 1
            level_hash[key] = process(s.post_match, current_level + 1, counters)
            counters.pop

            # Increment the current level
            last = counters.pop
            counters << last + 1
          end
        end
        s.getch
      end
      level_hash
    end
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