class Aws::IniParser

def ini_parse(raw)
  current_profile = nil
  current_prefix = nil
  raw.lines.inject({}) do |acc, line|
    line = line.split(/^|\s;/).first # remove comments
    profile = line.match(/^\[([^\[\]]+)\]\s*(#.+)?$/) unless line.nil?
    if profile
      current_profile = profile[1]
      named_profile = current_profile.match(/^profile\s+(.+?)$/)
      current_profile = named_profile[1] if named_profile
    elsif current_profile
      unless line.nil?
        item = line.match(/^(.+?)\s*=\s*(.+?)\s*$/)
        prefix = line.match(/^(.+?)\s*=\s*$/)
      end
      if item && item[1].match(/^\s+/)
        # Need to add lines to a nested configuration.
        inner_item = line.match(/^\s*(.+?)\s*=\s*(.+?)\s*$/)
        acc[current_profile] ||= {}
        acc[current_profile][current_prefix] ||= {}
        acc[current_profile][current_prefix][inner_item[1]] = inner_item[2]
      elsif item
        current_prefix = nil
        acc[current_profile] ||= {}
        acc[current_profile][item[1]] = item[2]
      elsif prefix
        current_prefix = prefix[1]
      end
    end
    acc
  end
end