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diff --git a/jni/ruby/lib/uri/generic.rb b/jni/ruby/lib/uri/generic.rb
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+# = uri/generic.rb
+#
+# Author:: Akira Yamada <akira@ruby-lang.org>
+# License:: You can redistribute it and/or modify it under the same term as Ruby.
+# Revision:: $Id: generic.rb 48980 2014-12-24 23:50:37Z normal $
+#
+# See URI for general documentation
+#
+
+require 'uri/common'
+
+module URI
+
+  #
+  # Base class for all URI classes.
+  # Implements generic URI syntax as per RFC 2396.
+  #
+  class Generic
+    include URI
+
+    #
+    # A Default port of nil for URI::Generic
+    #
+    DEFAULT_PORT = nil
+
+    #
+    # Returns default port
+    #
+    def self.default_port
+      self::DEFAULT_PORT
+    end
+
+    #
+    # Returns default port
+    #
+    def default_port
+      self.class.default_port
+    end
+
+    #
+    # An Array of the available components for URI::Generic
+    #
+    COMPONENT = [
+      :scheme,
+      :userinfo, :host, :port, :registry,
+      :path, :opaque,
+      :query,
+      :fragment
+    ].freeze
+
+    #
+    # Components of the URI in the order.
+    #
+    def self.component
+      self::COMPONENT
+    end
+
+    USE_REGISTRY = false # :nodoc:
+
+    def self.use_registry # :nodoc:
+      self::USE_REGISTRY
+    end
+
+    #
+    # == Synopsis
+    #
+    # See #new
+    #
+    # == Description
+    #
+    # At first, tries to create a new URI::Generic instance using
+    # URI::Generic::build. But, if exception URI::InvalidComponentError is raised,
+    # then it URI::Escape.escape all URI components and tries again.
+    #
+    #
+    def self.build2(args)
+      begin
+        return self.build(args)
+      rescue InvalidComponentError
+        if args.kind_of?(Array)
+          return self.build(args.collect{|x|
+            if x.is_a?(String)
+              DEFAULT_PARSER.escape(x)
+            else
+              x
+            end
+          })
+        elsif args.kind_of?(Hash)
+          tmp = {}
+          args.each do |key, value|
+            tmp[key] = if value
+                DEFAULT_PARSER.escape(value)
+              else
+                value
+              end
+          end
+          return self.build(tmp)
+        end
+      end
+    end
+
+    #
+    # == Synopsis
+    #
+    # See #new
+    #
+    # == Description
+    #
+    # Creates a new URI::Generic instance from components of URI::Generic
+    # with check.  Components are: scheme, userinfo, host, port, registry, path,
+    # opaque, query and fragment. You can provide arguments either by an Array or a Hash.
+    # See #new for hash keys to use or for order of array items.
+    #
+    def self.build(args)
+      if args.kind_of?(Array) &&
+          args.size == ::URI::Generic::COMPONENT.size
+        tmp = args.dup
+      elsif args.kind_of?(Hash)
+        tmp = ::URI::Generic::COMPONENT.collect do |c|
+          if args.include?(c)
+            args[c]
+          else
+            nil
+          end
+        end
+      else
+        component = self.class.component rescue ::URI::Generic::COMPONENT
+        raise ArgumentError,
+        "expected Array of or Hash of components of #{self.class} (#{component.join(', ')})"
+      end
+
+      tmp << nil
+      tmp << true
+      return self.new(*tmp)
+    end
+    #
+    # == Args
+    #
+    # +scheme+::
+    #   Protocol scheme, i.e. 'http','ftp','mailto' and so on.
+    # +userinfo+::
+    #   User name and password, i.e. 'sdmitry:bla'
+    # +host+::
+    #   Server host name
+    # +port+::
+    #   Server port
+    # +registry+::
+    #   Registry of naming authorities.
+    # +path+::
+    #   Path on server
+    # +opaque+::
+    #   Opaque part
+    # +query+::
+    #   Query data
+    # +fragment+::
+    #   A part of URI after '#' sign
+    # +parser+::
+    #   Parser for internal use [URI::DEFAULT_PARSER by default]
+    # +arg_check+::
+    #   Check arguments [false by default]
+    #
+    # == Description
+    #
+    # Creates a new URI::Generic instance from ``generic'' components without check.
+    #
+    def initialize(scheme,
+                   userinfo, host, port, registry,
+                   path, opaque,
+                   query,
+                   fragment,
+                   parser = DEFAULT_PARSER,
+                   arg_check = false)
+      @scheme = nil
+      @user = nil
+      @password = nil
+      @host = nil
+      @port = nil
+      @path = nil
+      @query = nil
+      @opaque = nil
+      @fragment = nil
+      @parser = parser == DEFAULT_PARSER ? nil : parser
+
+      if arg_check
+        self.scheme = scheme
+        self.userinfo = userinfo
+        self.hostname = host
+        self.port = port
+        self.path = path
+        self.query = query
+        self.opaque = opaque
+        self.fragment = fragment
+      else
+        self.set_scheme(scheme)
+        self.set_userinfo(userinfo)
+        self.set_host(host)
+        self.set_port(port)
+        self.set_path(path)
+        self.query = query
+        self.set_opaque(opaque)
+        self.fragment=(fragment)
+      end
+      if registry
+        raise InvalidURIError,
+          "the scheme #{@scheme} does not accept registry part: #{registry} (or bad hostname?)"
+      end
+
+      @scheme.freeze if @scheme
+      self.set_path('') if !@path && !@opaque # (see RFC2396 Section 5.2)
+      self.set_port(self.default_port) if self.default_port && !@port
+    end
+
+    #
+    # returns the scheme component of the URI.
+    #
+    #   URI("http://foo/bar/baz").scheme #=> "http"
+    #
+    attr_reader :scheme
+
+    # returns the host component of the URI.
+    #
+    #   URI("http://foo/bar/baz").host #=> "foo"
+    #
+    # It returns nil if no host component.
+    #
+    #   URI("mailto:foo@example.org").host #=> nil
+    #
+    # The component doesn't contains the port number.
+    #
+    #   URI("http://foo:8080/bar/baz").host #=> "foo"
+    #
+    # Since IPv6 addresses are wrapped by brackets in URIs,
+    # this method returns IPv6 addresses wrapped by brackets.
+    # This form is not appropriate to pass socket methods such as TCPSocket.open.
+    # If unwrapped host names are required, use "hostname" method.
+    #
+    #   URI("http://[::1]/bar/baz").host #=> "[::1]"
+    #   URI("http://[::1]/bar/baz").hostname #=> "::1"
+    #
+    attr_reader :host
+
+    # returns the port component of the URI.
+    #
+    #   URI("http://foo/bar/baz").port #=> "80"
+    #
+    #   URI("http://foo:8080/bar/baz").port #=> "8080"
+    #
+    attr_reader :port
+
+    def registry # :nodoc:
+      nil
+    end
+
+    # returns the path component of the URI.
+    #
+    #   URI("http://foo/bar/baz").path #=> "/bar/baz"
+    #
+    attr_reader :path
+
+    # returns the query component of the URI.
+    #
+    #   URI("http://foo/bar/baz?search=FooBar").query #=> "search=FooBar"
+    #
+    attr_reader :query
+
+    # returns the opaque part of the URI.
+    #
+    #   URI("mailto:foo@example.org").opaque #=> "foo@example.org"
+    #
+    # Portion of the path that does make use of the slash '/'.
+    # The path typically refers to the absolute path and the opaque part.
+    #  (see RFC2396 Section 3 and 5.2)
+    #
+    attr_reader :opaque
+
+    # returns the fragment component of the URI.
+    #
+    #   URI("http://foo/bar/baz?search=FooBar#ponies").fragment #=> "ponies"
+    #
+    attr_reader :fragment
+
+    # returns the parser to be used.
+    #
+    # Unless a URI::Parser is defined, then DEFAULT_PARSER is used.
+    #
+    def parser
+      if !defined?(@parser) || !@parser
+        DEFAULT_PARSER
+      else
+        @parser || DEFAULT_PARSER
+      end
+    end
+
+    # replace self by other URI object
+    def replace!(oth)
+      if self.class != oth.class
+        raise ArgumentError, "expected #{self.class} object"
+      end
+
+      component.each do |c|
+        self.__send__("#{c}=", oth.__send__(c))
+      end
+    end
+    private :replace!
+
+    #
+    # Components of the URI in the order.
+    #
+    def component
+      self.class.component
+    end
+
+    #
+    # check the scheme +v+ component against the URI::Parser Regexp for :SCHEME
+    #
+    def check_scheme(v)
+      if v && parser.regexp[:SCHEME] !~ v
+        raise InvalidComponentError,
+          "bad component(expected scheme component): #{v}"
+      end
+
+      return true
+    end
+    private :check_scheme
+
+    # protected setter for the scheme component +v+
+    #
+    # see also URI::Generic.scheme=
+    #
+    def set_scheme(v)
+      @scheme = v ? v.downcase : v
+    end
+    protected :set_scheme
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the scheme component +v+.
+    # (with validation)
+    #
+    # see also URI::Generic.check_scheme
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com")
+    #   uri.scheme = "https"
+    #   # =>  "https"
+    #   uri
+    #   #=> #<URI::HTTP:0x000000008e89e8 URL:https://my.example.com>
+    #
+    def scheme=(v)
+      check_scheme(v)
+      set_scheme(v)
+      v
+    end
+
+    #
+    # check the +user+ and +password+.
+    #
+    # If +password+ is not provided, then +user+ is
+    # split, using URI::Generic.split_userinfo, to
+    # pull +user+ and +password.
+    #
+    # see also URI::Generic.check_user, URI::Generic.check_password
+    #
+    def check_userinfo(user, password = nil)
+      if !password
+        user, password = split_userinfo(user)
+      end
+      check_user(user)
+      check_password(password, user)
+
+      return true
+    end
+    private :check_userinfo
+
+    #
+    # check the user +v+ component for RFC2396 compliance
+    # and against the URI::Parser Regexp for :USERINFO
+    #
+    # Can not have a registry or opaque component defined,
+    # with a user component defined.
+    #
+    def check_user(v)
+      if @opaque
+        raise InvalidURIError,
+          "can not set user with opaque"
+      end
+
+      return v unless v
+
+      if parser.regexp[:USERINFO] !~ v
+        raise InvalidComponentError,
+          "bad component(expected userinfo component or user component): #{v}"
+      end
+
+      return true
+    end
+    private :check_user
+
+    #
+    # check the password +v+ component for RFC2396 compliance
+    # and against the URI::Parser Regexp for :USERINFO
+    #
+    # Can not have a registry or opaque component defined,
+    # with a user component defined.
+    #
+    def check_password(v, user = @user)
+      if @opaque
+        raise InvalidURIError,
+          "can not set password with opaque"
+      end
+      return v unless v
+
+      if !user
+        raise InvalidURIError,
+          "password component depends user component"
+      end
+
+      if parser.regexp[:USERINFO] !~ v
+        raise InvalidComponentError,
+          "bad component(expected user component): #{v}"
+      end
+
+      return true
+    end
+    private :check_password
+
+    #
+    # Sets userinfo, argument is string like 'name:pass'
+    #
+    def userinfo=(userinfo)
+      if userinfo.nil?
+        return nil
+      end
+      check_userinfo(*userinfo)
+      set_userinfo(*userinfo)
+      # returns userinfo
+    end
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the +user+ component.
+    # (with validation)
+    #
+    # see also URI::Generic.check_user
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://john:S3nsit1ve@my.example.com")
+    #   uri.user = "sam"
+    #   # =>  "sam"
+    #   uri
+    #   #=> #<URI::HTTP:0x00000000881d90 URL:http://sam:V3ry_S3nsit1ve@my.example.com>
+    #
+    def user=(user)
+      check_user(user)
+      set_user(user)
+      # returns user
+    end
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the +password+ component.
+    # (with validation)
+    #
+    # see also URI::Generic.check_password
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://john:S3nsit1ve@my.example.com")
+    #   uri.password = "V3ry_S3nsit1ve"
+    #   # =>  "V3ry_S3nsit1ve"
+    #   uri
+    #   #=> #<URI::HTTP:0x00000000881d90 URL:http://john:V3ry_S3nsit1ve@my.example.com>
+    #
+    def password=(password)
+      check_password(password)
+      set_password(password)
+      # returns password
+    end
+
+    # protect setter for the +user+ component, and +password+ if available.
+    # (with validation)
+    #
+    # see also URI::Generic.userinfo=
+    #
+    def set_userinfo(user, password = nil)
+      unless password
+        user, password = split_userinfo(user)
+      end
+      @user     = user
+      @password = password if password
+
+      [@user, @password]
+    end
+    protected :set_userinfo
+
+    # protected setter for the user component +v+
+    #
+    # see also URI::Generic.user=
+    #
+    def set_user(v)
+      set_userinfo(v, @password)
+      v
+    end
+    protected :set_user
+
+    # protected setter for the password component +v+
+    #
+    # see also URI::Generic.password=
+    #
+    def set_password(v)
+      @password = v
+      # returns v
+    end
+    protected :set_password
+
+    # returns the userinfo +ui+ as user, password
+    # if properly formatted as 'user:password'
+    def split_userinfo(ui)
+      return nil, nil unless ui
+      user, password = ui.split(':'.freeze, 2)
+
+      return user, password
+    end
+    private :split_userinfo
+
+    # escapes 'user:password' +v+ based on RFC 1738 section 3.1
+    def escape_userpass(v)
+      parser.escape(v, /[@:\/]/o) # RFC 1738 section 3.1 #/
+    end
+    private :escape_userpass
+
+    # returns the userinfo, either as 'user' or 'user:password'
+    def userinfo
+      if @user.nil?
+        nil
+      elsif @password.nil?
+        @user
+      else
+        @user + ':' + @password
+      end
+    end
+
+    # returns the user component
+    def user
+      @user
+    end
+
+    # returns the password component
+    def password
+      @password
+    end
+
+    #
+    # check the host +v+ component for RFC2396 compliance
+    # and against the URI::Parser Regexp for :HOST
+    #
+    # Can not have a registry or opaque component defined,
+    # with a host component defined.
+    #
+    def check_host(v)
+      return v unless v
+
+      if @opaque
+        raise InvalidURIError,
+          "can not set host with registry or opaque"
+      elsif parser.regexp[:HOST] !~ v
+        raise InvalidComponentError,
+          "bad component(expected host component): #{v}"
+      end
+
+      return true
+    end
+    private :check_host
+
+    # protected setter for the host component +v+
+    #
+    # see also URI::Generic.host=
+    #
+    def set_host(v)
+      @host = v
+    end
+    protected :set_host
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the host component +v+.
+    # (with validation)
+    #
+    # see also URI::Generic.check_host
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com")
+    #   uri.host = "foo.com"
+    #   # =>  "foo.com"
+    #   uri
+    #   #=> #<URI::HTTP:0x000000008e89e8 URL:http://foo.com>
+    #
+    def host=(v)
+      check_host(v)
+      set_host(v)
+      v
+    end
+
+    # extract the host part of the URI and unwrap brackets for IPv6 addresses.
+    #
+    # This method is same as URI::Generic#host except
+    # brackets for IPv6 (and future IP) addresses are removed.
+    #
+    # u = URI("http://[::1]/bar")
+    # p u.hostname      #=> "::1"
+    # p u.host          #=> "[::1]"
+    #
+    def hostname
+      v = self.host
+      /\A\[(.*)\]\z/ =~ v ? $1 : v
+    end
+
+    # set the host part of the URI as the argument with brackets for IPv6 addresses.
+    #
+    # This method is same as URI::Generic#host= except
+    # the argument can be bare IPv6 address.
+    #
+    # u = URI("http://foo/bar")
+    # p u.to_s                  #=> "http://foo/bar"
+    # u.hostname = "::1"
+    # p u.to_s                  #=> "http://[::1]/bar"
+    #
+    # If the argument seems IPv6 address,
+    # it is wrapped by brackets.
+    #
+    def hostname=(v)
+      v = "[#{v}]" if /\A\[.*\]\z/ !~ v && /:/ =~ v
+      self.host = v
+    end
+
+    #
+    # check the port +v+ component for RFC2396 compliance
+    # and against the URI::Parser Regexp for :PORT
+    #
+    # Can not have a registry or opaque component defined,
+    # with a port component defined.
+    #
+    def check_port(v)
+      return v unless v
+
+      if @opaque
+        raise InvalidURIError,
+          "can not set port with registry or opaque"
+      elsif !v.kind_of?(Fixnum) && parser.regexp[:PORT] !~ v
+        raise InvalidComponentError,
+          "bad component(expected port component): #{v.inspect}"
+      end
+
+      return true
+    end
+    private :check_port
+
+    # protected setter for the port component +v+
+    #
+    # see also URI::Generic.port=
+    #
+    def set_port(v)
+      v = v.empty? ? nil : v.to_i unless !v || v.kind_of?(Fixnum)
+      @port = v
+    end
+    protected :set_port
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the port component +v+.
+    # (with validation)
+    #
+    # see also URI::Generic.check_port
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com")
+    #   uri.port = 8080
+    #   # =>  8080
+    #   uri
+    #   #=> #<URI::HTTP:0x000000008e89e8 URL:http://my.example.com:8080>
+    #
+    def port=(v)
+      check_port(v)
+      set_port(v)
+      port
+    end
+
+    def check_registry(v) # :nodoc:
+      raise InvalidURIError, "can not set registry"
+    end
+    private :check_registry
+
+    def set_registry(v) #:nodoc:
+      raise InvalidURIError, "can not set registry"
+    end
+    protected :set_registry
+
+    def registry=(v)
+      raise InvalidURIError, "can not set registry"
+    end
+
+    #
+    # check the path +v+ component for RFC2396 compliance
+    # and against the URI::Parser Regexp
+    # for :ABS_PATH and :REL_PATH
+    #
+    # Can not have a opaque component defined,
+    # with a path component defined.
+    #
+    def check_path(v)
+      # raise if both hier and opaque are not nil, because:
+      # absoluteURI   = scheme ":" ( hier_part | opaque_part )
+      # hier_part     = ( net_path | abs_path ) [ "?" query ]
+      if v && @opaque
+        raise InvalidURIError,
+          "path conflicts with opaque"
+      end
+
+      # If scheme is ftp, path may be relative.
+      # See RFC 1738 section 3.2.2, and RFC 2396.
+      if @scheme && @scheme != "ftp".freeze
+        if v && v != ''.freeze && parser.regexp[:ABS_PATH] !~ v
+          raise InvalidComponentError,
+            "bad component(expected absolute path component): #{v}"
+        end
+      else
+        if v && v != ''.freeze && parser.regexp[:ABS_PATH] !~ v &&
+           parser.regexp[:REL_PATH] !~ v
+          raise InvalidComponentError,
+            "bad component(expected relative path component): #{v}"
+        end
+      end
+
+      return true
+    end
+    private :check_path
+
+    # protected setter for the path component +v+
+    #
+    # see also URI::Generic.path=
+    #
+    def set_path(v)
+      @path = v
+    end
+    protected :set_path
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the path component +v+.
+    # (with validation)
+    #
+    # see also URI::Generic.check_path
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com/pub/files")
+    #   uri.path = "/faq/"
+    #   # =>  "/faq/"
+    #   uri
+    #   #=> #<URI::HTTP:0x000000008e89e8 URL:http://my.example.com/faq/>
+    #
+    def path=(v)
+      check_path(v)
+      set_path(v)
+      v
+    end
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the query component +v+.
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com/?id=25")
+    #   uri.query = "id=1"
+    #   # =>  "id=1"
+    #   uri
+    #   #=> #<URI::HTTP:0x000000008e89e8 URL:http://my.example.com/?id=1>
+    #
+    def query=(v)
+      return @query = nil unless v
+      raise InvalidURIError, "query conflicts with opaque" if @opaque
+
+      x = v.to_str
+      v = x.dup if x.equal? v
+      v.encode!(Encoding::UTF_8) rescue nil
+      v.delete!("\t\r\n".freeze)
+      v.force_encoding(Encoding::ASCII_8BIT)
+      v.gsub!(/(?!%\h\h|[!$-&(-;=?-_a-~])./n.freeze){'%%%02X'.freeze % $&.ord}
+      v.force_encoding(Encoding::US_ASCII)
+      @query = v
+    end
+
+    #
+    # check the opaque +v+ component for RFC2396 compliance and
+    # against the URI::Parser Regexp for :OPAQUE
+    #
+    # Can not have a host, port, user or path component defined,
+    # with an opaque component defined.
+    #
+    def check_opaque(v)
+      return v unless v
+
+      # raise if both hier and opaque are not nil, because:
+      # absoluteURI   = scheme ":" ( hier_part | opaque_part )
+      # hier_part     = ( net_path | abs_path ) [ "?" query ]
+      if @host || @port || @user || @path  # userinfo = @user + ':' + @password
+        raise InvalidURIError,
+          "can not set opaque with host, port, userinfo or path"
+      elsif v && parser.regexp[:OPAQUE] !~ v
+        raise InvalidComponentError,
+          "bad component(expected opaque component): #{v}"
+      end
+
+      return true
+    end
+    private :check_opaque
+
+    # protected setter for the opaque component +v+
+    #
+    # see also URI::Generic.opaque=
+    #
+    def set_opaque(v)
+      @opaque = v
+    end
+    protected :set_opaque
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the opaque component +v+.
+    # (with validation)
+    #
+    # see also URI::Generic.check_opaque
+    #
+    def opaque=(v)
+      check_opaque(v)
+      set_opaque(v)
+      v
+    end
+
+    #
+    # check the fragment +v+ component against the URI::Parser Regexp for :FRAGMENT
+    #
+    #
+    # == Args
+    #
+    # +v+::
+    #    String
+    #
+    # == Description
+    #
+    # public setter for the fragment component +v+.
+    # (with validation)
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com/?id=25#time=1305212049")
+    #   uri.fragment = "time=1305212086"
+    #   # =>  "time=1305212086"
+    #   uri
+    #   #=> #<URI::HTTP:0x000000007a81f8 URL:http://my.example.com/?id=25#time=1305212086>
+    #
+    def fragment=(v)
+      return @fragment = nil unless v
+
+      x = v.to_str
+      v = x.dup if x.equal? v
+      v.encode!(Encoding::UTF_8) rescue nil
+      v.delete!("\t\r\n".freeze)
+      v.force_encoding(Encoding::ASCII_8BIT)
+      v.gsub!(/(?!%\h\h|[!-~])./n){'%%%02X'.freeze % $&.ord}
+      v.force_encoding(Encoding::US_ASCII)
+      @fragment = v
+    end
+
+    #
+    # Checks if URI has a path
+    #
+    def hierarchical?
+      if @path
+        true
+      else
+        false
+      end
+    end
+
+    #
+    # Checks if URI is an absolute one
+    #
+    def absolute?
+      if @scheme
+        true
+      else
+        false
+      end
+    end
+    alias absolute absolute?
+
+    #
+    # Checks if URI is relative
+    #
+    def relative?
+      !absolute?
+    end
+
+    #
+    # returns an Array of the path split on '/'
+    #
+    def split_path(path)
+      path.split(%r{/+}, -1)
+    end
+    private :split_path
+
+    #
+    # Merges a base path +base+, with relative path +rel+,
+    # returns a modified base path.
+    #
+    def merge_path(base, rel)
+
+      # RFC2396, Section 5.2, 5)
+      # RFC2396, Section 5.2, 6)
+      base_path = split_path(base)
+      rel_path  = split_path(rel)
+
+      # RFC2396, Section 5.2, 6), a)
+      base_path << '' if base_path.last == '..'
+      while i = base_path.index('..')
+        base_path.slice!(i - 1, 2)
+      end
+
+      if (first = rel_path.first) and first.empty?
+        base_path.clear
+        rel_path.shift
+      end
+
+      # RFC2396, Section 5.2, 6), c)
+      # RFC2396, Section 5.2, 6), d)
+      rel_path.push('') if rel_path.last == '.' || rel_path.last == '..'
+      rel_path.delete('.')
+
+      # RFC2396, Section 5.2, 6), e)
+      tmp = []
+      rel_path.each do |x|
+        if x == '..' &&
+            !(tmp.empty? || tmp.last == '..')
+          tmp.pop
+        else
+          tmp << x
+        end
+      end
+
+      add_trailer_slash = !tmp.empty?
+      if base_path.empty?
+        base_path = [''] # keep '/' for root directory
+      elsif add_trailer_slash
+        base_path.pop
+      end
+      while x = tmp.shift
+        if x == '..'
+          # RFC2396, Section 4
+          # a .. or . in an absolute path has no special meaning
+          base_path.pop if base_path.size > 1
+        else
+          # if x == '..'
+          #   valid absolute (but abnormal) path "/../..."
+          # else
+          #   valid absolute path
+          # end
+          base_path << x
+          tmp.each {|t| base_path << t}
+          add_trailer_slash = false
+          break
+        end
+      end
+      base_path.push('') if add_trailer_slash
+
+      return base_path.join('/')
+    end
+    private :merge_path
+
+    #
+    # == Args
+    #
+    # +oth+::
+    #    URI or String
+    #
+    # == Description
+    #
+    # Destructive form of #merge
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com")
+    #   uri.merge!("/main.rbx?page=1")
+    #   p uri
+    #   # =>  #<URI::HTTP:0x2021f3b0 URL:http://my.example.com/main.rbx?page=1>
+    #
+    def merge!(oth)
+      t = merge(oth)
+      if self == t
+        nil
+      else
+        replace!(t)
+        self
+      end
+    end
+
+    #
+    # == Args
+    #
+    # +oth+::
+    #    URI or String
+    #
+    # == Description
+    #
+    # Merges two URI's.
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com")
+    #   p uri.merge("/main.rbx?page=1")
+    #   # =>  #<URI::HTTP:0x2021f3b0 URL:http://my.example.com/main.rbx?page=1>
+    #
+    def merge(oth)
+      begin
+        base, rel = merge0(oth)
+      rescue
+        raise $!.class, $!.message
+      end
+
+      if base == rel
+        return base
+      end
+
+      authority = rel.userinfo || rel.host || rel.port
+
+      # RFC2396, Section 5.2, 2)
+      if (rel.path.nil? || rel.path.empty?) && !authority && !rel.query
+        base.fragment=(rel.fragment) if rel.fragment
+        return base
+      end
+
+      base.query = nil
+      base.fragment=(nil)
+
+      # RFC2396, Section 5.2, 4)
+      if !authority
+        base.set_path(merge_path(base.path, rel.path)) if base.path && rel.path
+      else
+        # RFC2396, Section 5.2, 4)
+        base.set_path(rel.path) if rel.path
+      end
+
+      # RFC2396, Section 5.2, 7)
+      base.set_userinfo(rel.userinfo) if rel.userinfo
+      base.set_host(rel.host)         if rel.host
+      base.set_port(rel.port)         if rel.port
+      base.query = rel.query       if rel.query
+      base.fragment=(rel.fragment) if rel.fragment
+
+      return base
+    end # merge
+    alias + merge
+
+    # return base and rel.
+    # you can modify `base', but can not `rel'.
+    def merge0(oth)
+      oth = parser.send(:convert_to_uri, oth)
+
+      if self.relative? && oth.relative?
+        raise BadURIError,
+          "both URI are relative"
+      end
+
+      if self.absolute? && oth.absolute?
+        #raise BadURIError,
+        #  "both URI are absolute"
+        # hmm... should return oth for usability?
+        return oth, oth
+      end
+
+      if self.absolute?
+        return self.dup, oth
+      else
+        return oth, oth
+      end
+    end
+    private :merge0
+
+    # :stopdoc:
+    def route_from_path(src, dst)
+      case dst
+      when src
+        # RFC2396, Section 4.2
+        return ''
+      when %r{(?:\A|/)\.\.?(?:/|\z)}
+        # dst has abnormal absolute path,
+        # like "/./", "/../", "/x/../", ...
+        return dst.dup
+      end
+
+      src_path = src.scan(%r{(?:\A|[^/]+)/})
+      dst_path = dst.scan(%r{(?:\A|[^/]+)/?})
+
+      # discard same parts
+      while !dst_path.empty? && dst_path.first == src_path.first
+        src_path.shift
+        dst_path.shift
+      end
+
+      tmp = dst_path.join
+
+      # calculate
+      if src_path.empty?
+        if tmp.empty?
+          return './'
+        elsif dst_path.first.include?(':') # (see RFC2396 Section 5)
+          return './' + tmp
+        else
+          return tmp
+        end
+      end
+
+      return '../' * src_path.size + tmp
+    end
+    private :route_from_path
+    # :startdoc:
+
+    # :stopdoc:
+    def route_from0(oth)
+      oth = parser.send(:convert_to_uri, oth)
+      if self.relative?
+        raise BadURIError,
+          "relative URI: #{self}"
+      end
+      if oth.relative?
+        raise BadURIError,
+          "relative URI: #{oth}"
+      end
+
+      if self.scheme != oth.scheme
+        return self, self.dup
+      end
+      rel = URI::Generic.new(nil, # it is relative URI
+                             self.userinfo, self.host, self.port,
+                             nil, self.path, self.opaque,
+                             self.query, self.fragment, parser)
+
+      if rel.userinfo != oth.userinfo ||
+          rel.host.to_s.downcase != oth.host.to_s.downcase ||
+          rel.port != oth.port
+
+        if self.userinfo.nil? && self.host.nil?
+          return self, self.dup
+        end
+
+        rel.set_port(nil) if rel.port == oth.default_port
+        return rel, rel
+      end
+      rel.set_userinfo(nil)
+      rel.set_host(nil)
+      rel.set_port(nil)
+
+      if rel.path && rel.path == oth.path
+        rel.set_path('')
+        rel.query = nil if rel.query == oth.query
+        return rel, rel
+      elsif rel.opaque && rel.opaque == oth.opaque
+        rel.set_opaque('')
+        rel.query = nil if rel.query == oth.query
+        return rel, rel
+      end
+
+      # you can modify `rel', but can not `oth'.
+      return oth, rel
+    end
+    private :route_from0
+    # :startdoc:
+
+    #
+    # == Args
+    #
+    # +oth+::
+    #    URI or String
+    #
+    # == Description
+    #
+    # Calculates relative path from oth to self
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse('http://my.example.com/main.rbx?page=1')
+    #   p uri.route_from('http://my.example.com')
+    #   #=> #<URI::Generic:0x20218858 URL:/main.rbx?page=1>
+    #
+    def route_from(oth)
+      # you can modify `rel', but can not `oth'.
+      begin
+        oth, rel = route_from0(oth)
+      rescue
+        raise $!.class, $!.message
+      end
+      if oth == rel
+        return rel
+      end
+
+      rel.set_path(route_from_path(oth.path, self.path))
+      if rel.path == './' && self.query
+        # "./?foo" -> "?foo"
+        rel.set_path('')
+      end
+
+      return rel
+    end
+
+    alias - route_from
+
+    #
+    # == Args
+    #
+    # +oth+::
+    #    URI or String
+    #
+    # == Description
+    #
+    # Calculates relative path to oth from self
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse('http://my.example.com')
+    #   p uri.route_to('http://my.example.com/main.rbx?page=1')
+    #   #=> #<URI::Generic:0x2020c2f6 URL:/main.rbx?page=1>
+    #
+    def route_to(oth)
+      parser.send(:convert_to_uri, oth).route_from(self)
+    end
+
+    #
+    # Returns normalized URI
+    #
+    def normalize
+      uri = dup
+      uri.normalize!
+      uri
+    end
+
+    #
+    # Destructive version of #normalize
+    #
+    def normalize!
+      if path && path.empty?
+        set_path('/')
+      end
+      if scheme && scheme != scheme.downcase
+        set_scheme(self.scheme.downcase)
+      end
+      if host && host != host.downcase
+        set_host(self.host.downcase)
+      end
+    end
+
+    #
+    # Constructs String from URI
+    #
+    def to_s
+      str = ''
+      if @scheme
+        str << @scheme
+        str << ':'.freeze
+      end
+
+      if @opaque
+        str << @opaque
+      else
+        if @host
+          str << '//'.freeze
+        end
+        if self.userinfo
+          str << self.userinfo
+          str << '@'.freeze
+        end
+        if @host
+          str << @host
+        end
+        if @port && @port != self.default_port
+          str << ':'.freeze
+          str << @port.to_s
+        end
+        str << @path
+        if @query
+          str << '?'.freeze
+          str << @query
+        end
+      end
+      if @fragment
+        str << '#'.freeze
+        str << @fragment
+      end
+      str
+    end
+
+    #
+    # Compares to URI's
+    #
+    def ==(oth)
+      if self.class == oth.class
+        self.normalize.component_ary == oth.normalize.component_ary
+      else
+        false
+      end
+    end
+
+    def hash
+      self.component_ary.hash
+    end
+
+    def eql?(oth)
+      self.class == oth.class &&
+      parser == oth.parser &&
+      self.component_ary.eql?(oth.component_ary)
+    end
+
+=begin
+
+--- URI::Generic#===(oth)
+
+=end
+#    def ===(oth)
+#      raise NotImplementedError
+#    end
+
+=begin
+=end
+
+
+    # returns an Array of the components defined from the COMPONENT Array
+    def component_ary
+      component.collect do |x|
+        self.send(x)
+      end
+    end
+    protected :component_ary
+
+    # == Args
+    #
+    # +components+::
+    #    Multiple Symbol arguments defined in URI::HTTP
+    #
+    # == Description
+    #
+    # Selects specified components from URI
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse('http://myuser:mypass@my.example.com/test.rbx')
+    #   p uri.select(:userinfo, :host, :path)
+    #   # => ["myuser:mypass", "my.example.com", "/test.rbx"]
+    #
+    def select(*components)
+      components.collect do |c|
+        if component.include?(c)
+          self.send(c)
+        else
+          raise ArgumentError,
+            "expected of components of #{self.class} (#{self.class.component.join(', ')})"
+        end
+      end
+    end
+
+    def inspect
+      "#<#{self.class} #{self}>"
+    end
+
+    #
+    # == Args
+    #
+    # +v+::
+    #    URI or String
+    #
+    # == Description
+    #
+    #  attempt to parse other URI +oth+
+    #  return [parsed_oth, self]
+    #
+    # == Usage
+    #
+    #   require 'uri'
+    #
+    #   uri = URI.parse("http://my.example.com")
+    #   uri.coerce("http://foo.com")
+    #   #=> [#<URI::HTTP:0x00000000bcb028 URL:http://foo.com/>, #<URI::HTTP:0x00000000d92178 URL:http://my.example.com>]
+    #
+    def coerce(oth)
+      case oth
+      when String
+        oth = parser.parse(oth)
+      else
+        super
+      end
+
+      return oth, self
+    end
+
+    # returns a proxy URI.
+    # The proxy URI is obtained from environment variables such as http_proxy,
+    # ftp_proxy, no_proxy, etc.
+    # If there is no proper proxy, nil is returned.
+    #
+    # Note that capitalized variables (HTTP_PROXY, FTP_PROXY, NO_PROXY, etc.)
+    # are examined too.
+    #
+    # But http_proxy and HTTP_PROXY is treated specially under CGI environment.
+    # It's because HTTP_PROXY may be set by Proxy: header.
+    # So HTTP_PROXY is not used.
+    # http_proxy is not used too if the variable is case insensitive.
+    # CGI_HTTP_PROXY can be used instead.
+    def find_proxy
+      raise BadURIError, "relative URI: #{self}" if self.relative?
+      name = self.scheme.downcase + '_proxy'
+      proxy_uri = nil
+      if name == 'http_proxy' && ENV.include?('REQUEST_METHOD') # CGI?
+        # HTTP_PROXY conflicts with *_proxy for proxy settings and
+        # HTTP_* for header information in CGI.
+        # So it should be careful to use it.
+        pairs = ENV.reject {|k, v| /\Ahttp_proxy\z/i !~ k }
+        case pairs.length
+        when 0 # no proxy setting anyway.
+          proxy_uri = nil
+        when 1
+          k, _ = pairs.shift
+          if k == 'http_proxy' && ENV[k.upcase] == nil
+            # http_proxy is safe to use because ENV is case sensitive.
+            proxy_uri = ENV[name]
+          else
+            proxy_uri = nil
+          end
+        else # http_proxy is safe to use because ENV is case sensitive.
+          proxy_uri = ENV.to_hash[name]
+        end
+        if !proxy_uri
+          # Use CGI_HTTP_PROXY.  cf. libwww-perl.
+          proxy_uri = ENV["CGI_#{name.upcase}"]
+        end
+      elsif name == 'http_proxy'
+        unless proxy_uri = ENV[name]
+          if proxy_uri = ENV[name.upcase]
+            warn 'The environment variable HTTP_PROXY is discouraged.  Use http_proxy.'
+          end
+        end
+      else
+        proxy_uri = ENV[name] || ENV[name.upcase]
+      end
+
+      if proxy_uri.nil? || proxy_uri.empty?
+        return nil
+      end
+
+      if self.hostname
+        require 'socket'
+        begin
+          addr = IPSocket.getaddress(self.hostname)
+          return nil if /\A127\.|\A::1\z/ =~ addr
+        rescue SocketError
+        end
+      end
+
+      name = 'no_proxy'
+      if no_proxy = ENV[name] || ENV[name.upcase]
+        no_proxy.scan(/([^:,]*)(?::(\d+))?/) {|host, port|
+          if /(\A|\.)#{Regexp.quote host}\z/i =~ self.host &&
+            (!port || self.port == port.to_i)
+            return nil
+          end
+        }
+      end
+      URI.parse(proxy_uri)
+    end
+  end
+end