lib/webrick/httpversion.rb

   1 #
   2 # HTTPVersion.rb -- presentation of HTTP version
   3 #
   4 # Author: IPR -- Internet Programming with Ruby -- writers
   5 # Copyright (c) 2002 Internet Programming with Ruby writers. All rights
   6 # reserved.
   7 #
   8 # $IPR: httpversion.rb,v 1.5 2002/09/21 12:23:37 gotoyuzo Exp $
   9
  10 module WEBrick
  11   class HTTPVersion
  12     include Comparable
  13
  14     attr_accessor :major, :minor
  15
  16     def self.convert(version)
  17       version.is_a?(self) ? version : new(version)
  18     end
  19
  20     def initialize(version)
  21       case version
  22       when HTTPVersion
  23         @major, @minor = version.major, version.minor
  24       when String
  25         if /^(\d+)\.(\d+)$/ =~ version
  26           @major, @minor = $1.to_i, $2.to_i
  27         end
  28       end
  29       if @major.nil? || @minor.nil?
  30         raise ArgumentError,
  31           format("cannot convert %s into %s", version.class, self.class)
  32       end
  33     end
  34
  35     def <=>(other)
  36       unless other.is_a?(self.class)
  37         other = self.class.new(other)
  38       end
  39       if (ret = @major <=> other.major) == 0
  40         return @minor <=> other.minor
  41       end
  42       return ret
  43     end
  44
  45     def to_s
  46       format("%d.%d", @major, @minor)
  47     end
  48   end
  49 end