class Github::PageLinks

def initialize(response_headers)
  link_header = response_headers[HEADER_LINK]
  if link_header
    return unless link_header =~ /(next|first|last|prev)/
    link_header.split(DELIM_LINKS).each do |link|
      if link.strip =~ /<([^>]+)>; rel=\"([^\"]+)\"/
        url_part, meta_part = $1, $2
        next if !url_part || !meta_part
        case meta_part
        when META_FIRST
          self.first = url_part
        when META_LAST
          self.last = url_part
        when META_NEXT
          self.next = url_part
        when META_PREV
          self.prev = url_part
        end
      end
    end
  else
    # When on the first page
    self.next = response_headers[HEADER_NEXT]
    self.last = response_headers[HEADER_LAST]
  end
end