mirror of
https://github.com/mistergibson/gxg-web-client.git
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753 lines
22 KiB
Ruby
753 lines
22 KiB
Ruby
# encoding:utf-8
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#--
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# Copyright (C) 2005-2014 Bob Aman
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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#++
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require 'uri'
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require 'time'
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require 'thread'
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require 'digest/sha1'
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require 'digest/md5'
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#require 'uuidtools/version'
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unless defined? UUIDTools::VERSION
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module UUIDTools
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module VERSION #:nodoc:
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MAJOR = 2
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MINOR = 1
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TINY = 5
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STRING = [MAJOR, MINOR, TINY].join('.')
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end
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end
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end
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#begin
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# require 'securerandom'
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#rescue LoadError
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# require File.join(File.dirname(__FILE__), 'compat', 'securerandom')
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#end
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module UUIDTools
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##
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# UUIDTools was designed to be a simple library for generating any
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# of the various types of UUIDs. It conforms to RFC 4122 whenever
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# possible.
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#
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# @example
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# UUID.md5_create(UUID_DNS_NAMESPACE, "www.widgets.com")
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# # => #<UUID:0x287576 UUID:3d813cbb-47fb-32ba-91df-831e1593ac29>
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# UUID.sha1_create(UUID_DNS_NAMESPACE, "www.widgets.com")
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# # => #<UUID:0x2a0116 UUID:21f7f8de-8051-5b89-8680-0195ef798b6a>
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# UUID.timestamp_create
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# # => #<UUID:0x2adfdc UUID:64a5189c-25b3-11da-a97b-00c04fd430c8>
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# UUID.random_create
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# # => #<UUID:0x19013a UUID:984265dc-4200-4f02-ae70-fe4f48964159>
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class UUID
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include Comparable
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##
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# @api private
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@@last_timestamp = nil
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##
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# @api private
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@@last_node_id = nil
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##
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# @api private
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@@last_clock_sequence = nil
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##
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# @api private
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@@state_file = nil
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##
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# @api private
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@@mutex = Mutex.new
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##
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# Creates a new UUID structure from its component values.
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# @see UUID.md5_create
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# @see UUID.sha1_create
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# @see UUID.timestamp_create
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# @see UUID.random_create
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# @api private
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def initialize(time_low, time_mid, time_hi_and_version,
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clock_seq_hi_and_reserved, clock_seq_low, nodes)
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unless time_low >= 0 && time_low < 4294967296
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raise ArgumentError,
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"Expected unsigned 32-bit number for time_low, got #{time_low}."
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end
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unless time_mid >= 0 && time_mid < 65536
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raise ArgumentError,
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"Expected unsigned 16-bit number for time_mid, got #{time_mid}."
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end
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unless time_hi_and_version >= 0 && time_hi_and_version < 65536
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raise ArgumentError,
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"Expected unsigned 16-bit number for time_hi_and_version, " +
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"got #{time_hi_and_version}."
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end
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unless clock_seq_hi_and_reserved >= 0 && clock_seq_hi_and_reserved < 256
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raise ArgumentError,
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"Expected unsigned 8-bit number for clock_seq_hi_and_reserved, " +
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"got #{clock_seq_hi_and_reserved}."
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end
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unless clock_seq_low >= 0 && clock_seq_low < 256
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raise ArgumentError,
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"Expected unsigned 8-bit number for clock_seq_low, " +
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"got #{clock_seq_low}."
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end
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unless nodes.kind_of?(Enumerable)
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raise TypeError,
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"Expected Enumerable, got #{nodes.class.name}."
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end
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unless nodes.size == 6
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raise ArgumentError,
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"Expected nodes to have size of 6."
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end
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for node in nodes
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unless node >= 0 && node < 256
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raise ArgumentError,
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"Expected unsigned 8-bit number for each node, " +
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"got #{node}."
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end
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end
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@time_low = time_low
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@time_mid = time_mid
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@time_hi_and_version = time_hi_and_version
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@clock_seq_hi_and_reserved = clock_seq_hi_and_reserved
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@clock_seq_low = clock_seq_low
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@nodes = nodes
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end
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##
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# Returns the value of attribute `time_low`
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attr_accessor :time_low
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##
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# Returns the value of attribute `time_mid`
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attr_accessor :time_mid
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##
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# Returns the value of attribute `time_hi_and_version`
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attr_accessor :time_hi_and_version
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##
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# Returns the value of attribute `clock_seq_hi_and_reserved`
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attr_accessor :clock_seq_hi_and_reserved
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##
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# Returns the value of attribute `clock_seq_low`
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attr_accessor :clock_seq_low
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##
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# Returns the value of attribute `nodes`
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attr_accessor :nodes
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##
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# Parses a UUID from a string.
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def self.parse(uuid_string)
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unless uuid_string.kind_of? String
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raise TypeError,
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"Expected String, got #{uuid_string.class.name} instead."
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end
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uuid_components = uuid_string.downcase.scan(UUIDTools::UUID_REGEXP).first
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raise ArgumentError, "Invalid UUID format." if uuid_components.nil?
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time_low = uuid_components[0].to_i(16)
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time_mid = uuid_components[1].to_i(16)
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time_hi_and_version = uuid_components[2].to_i(16)
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clock_seq_hi_and_reserved = uuid_components[3].to_i(16)
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clock_seq_low = uuid_components[4].to_i(16)
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nodes = []
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for i in 0..5
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nodes << uuid_components[5][(i * 2)..(i * 2) + 1].to_i(16)
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end
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return self.new(time_low, time_mid, time_hi_and_version,
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clock_seq_hi_and_reserved, clock_seq_low, nodes)
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end
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##
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# Parses a UUID from a raw byte string.
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def self.parse_raw(raw_string)
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unless raw_string.kind_of? String
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raise TypeError,
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"Expected String, got #{raw_string.class.name} instead."
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end
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integer = self.convert_byte_string_to_int(raw_string)
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time_low = (integer >> 96) & 0xFFFFFFFF
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time_mid = (integer >> 80) & 0xFFFF
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time_hi_and_version = (integer >> 64) & 0xFFFF
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clock_seq_hi_and_reserved = (integer >> 56) & 0xFF
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clock_seq_low = (integer >> 48) & 0xFF
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nodes = []
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for i in 0..5
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nodes << ((integer >> (40 - (i * 8))) & 0xFF)
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end
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return self.new(time_low, time_mid, time_hi_and_version,
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clock_seq_hi_and_reserved, clock_seq_low, nodes)
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end
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##
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# Parses a UUID from an Integer.
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def self.parse_int(uuid_int)
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unless uuid_int.kind_of?(Integer)
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raise ArgumentError,
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"Expected Integer, got #{uuid_int.class.name} instead."
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end
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return self.parse_raw(self.convert_int_to_byte_string(uuid_int, 16))
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end
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##
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# Parse a UUID from a hexdigest String.
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def self.parse_hexdigest(uuid_hexdigest)
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unless uuid_hexdigest.kind_of?(String)
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raise ArgumentError,
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"Expected String, got #{uuid_hexdigest.class.name} instead."
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end
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return self.parse_int(uuid_hexdigest.to_i(16))
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end
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##
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# Creates a UUID from a random value.
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def self.random_create()
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new_uuid = self.parse_raw(SecureRandom.random_bytes(16))
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new_uuid.time_hi_and_version &= 0x0FFF
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new_uuid.time_hi_and_version |= (4 << 12)
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new_uuid.clock_seq_hi_and_reserved &= 0x3F
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new_uuid.clock_seq_hi_and_reserved |= 0x80
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return new_uuid
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end
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##
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# Creates a UUID from a timestamp.
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def self.timestamp_create(timestamp=nil)
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# We need a lock here to prevent two threads from ever
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# getting the same timestamp.
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@@mutex.synchronize do
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# Always use GMT to generate UUIDs.
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if timestamp.nil?
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gmt_timestamp = Time.now.gmtime
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else
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gmt_timestamp = timestamp.gmtime
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end
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# Convert to 100 nanosecond blocks
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gmt_timestamp_100_nanoseconds = (gmt_timestamp.tv_sec * 10000000) +
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(gmt_timestamp.tv_usec * 10) + 0x01B21DD213814000
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mac_address = self.mac_address
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node_id = 0
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if mac_address != nil
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nodes = mac_address.split(":").collect do |octet|
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octet.to_i(16)
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end
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else
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nodes = SecureRandom.random_bytes(6).unpack("C*")
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nodes[0] |= 0b00000001
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end
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for i in 0..5
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node_id += (nodes[i] << (40 - (i * 8)))
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end
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clock_sequence = @@last_clock_sequence
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if clock_sequence.nil?
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clock_sequence = self.convert_byte_string_to_int(
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SecureRandom.random_bytes(16)
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)
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end
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if @@last_node_id != nil && @@last_node_id != node_id
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# The node id has changed. Change the clock id.
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clock_sequence = self.convert_byte_string_to_int(
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SecureRandom.random_bytes(16)
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)
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elsif @@last_timestamp != nil &&
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gmt_timestamp_100_nanoseconds <= @@last_timestamp
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clock_sequence = clock_sequence + 1
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end
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@@last_timestamp = gmt_timestamp_100_nanoseconds
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@@last_node_id = node_id
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@@last_clock_sequence = clock_sequence
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time_low = gmt_timestamp_100_nanoseconds & 0xFFFFFFFF
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time_mid = ((gmt_timestamp_100_nanoseconds >> 32) & 0xFFFF)
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time_hi_and_version = ((gmt_timestamp_100_nanoseconds >> 48) & 0x0FFF)
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time_hi_and_version |= (1 << 12)
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clock_seq_low = clock_sequence & 0xFF;
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clock_seq_hi_and_reserved = (clock_sequence & 0x3F00) >> 8
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clock_seq_hi_and_reserved |= 0x80
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return self.new(time_low, time_mid, time_hi_and_version,
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clock_seq_hi_and_reserved, clock_seq_low, nodes)
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end
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end
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##
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# Creates a UUID using the MD5 hash. (Version 3)
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def self.md5_create(namespace, name)
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return self.create_from_hash(Digest::MD5, namespace, name)
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end
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##
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# Creates a UUID using the SHA1 hash. (Version 5)
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def self.sha1_create(namespace, name)
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return self.create_from_hash(Digest::SHA1, namespace, name)
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end
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##
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# This method applies only to version 1 UUIDs.
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# Checks if the node ID was generated from a random number
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# or from an IEEE 802 address (MAC address).
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# Always returns false for UUIDs that aren't version 1.
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# This should not be confused with version 4 UUIDs where
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# more than just the node id is random.
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def random_node_id?
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return false if self.version != 1
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return ((self.nodes.first & 0x01) == 1)
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end
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##
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# Returns true if this UUID is the
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# nil UUID (00000000-0000-0000-0000-000000000000).
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def nil_uuid?
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return false if self.time_low != 0
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return false if self.time_mid != 0
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return false if self.time_hi_and_version != 0
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return false if self.clock_seq_hi_and_reserved != 0
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return false if self.clock_seq_low != 0
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self.nodes.each do |node|
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return false if node != 0
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end
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return true
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end
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##
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# Returns the UUID version type.
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# Possible values:
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# 1 - Time-based with unique or random host identifier
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# 2 - DCE Security version (with POSIX UIDs)
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# 3 - Name-based (MD5 hash)
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# 4 - Random
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# 5 - Name-based (SHA-1 hash)
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def version
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return (time_hi_and_version >> 12)
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end
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##
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# Returns the UUID variant.
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# Possible values:
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# 0b000 - Reserved, NCS backward compatibility.
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# 0b100 - The variant specified in this document.
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# 0b110 - Reserved, Microsoft Corporation backward compatibility.
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# 0b111 - Reserved for future definition.
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def variant
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variant_raw = (clock_seq_hi_and_reserved >> 5)
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result = nil
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if (variant_raw >> 2) == 0
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result = 0x000
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elsif (variant_raw >> 1) == 2
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result = 0x100
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else
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result = variant_raw
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end
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return (result >> 6)
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end
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##
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# Returns true if this UUID is valid.
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def valid?
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if [0b000, 0b100, 0b110, 0b111].include?(self.variant) &&
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(1..5).include?(self.version)
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return true
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else
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return false
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end
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end
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##
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# Returns the IEEE 802 address used to generate this UUID or
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# nil if a MAC address was not used.
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def mac_address
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return nil if self.version != 1
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return nil if self.random_node_id?
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return (self.nodes.collect do |node|
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sprintf("%2.2x", node)
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end).join(":")
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end
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##
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# Returns the timestamp used to generate this UUID
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def timestamp
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return nil if self.version != 1
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gmt_timestamp_100_nanoseconds = 0
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gmt_timestamp_100_nanoseconds +=
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((self.time_hi_and_version & 0x0FFF) << 48)
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gmt_timestamp_100_nanoseconds += (self.time_mid << 32)
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gmt_timestamp_100_nanoseconds += self.time_low
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return Time.at(
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(gmt_timestamp_100_nanoseconds - 0x01B21DD213814000) / 10000000.0)
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end
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##
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# Compares two UUIDs lexically
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def <=>(other_uuid)
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return nil unless other_uuid.is_a?(UUIDTools::UUID)
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check = self.time_low <=> other_uuid.time_low
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return check if check != 0
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check = self.time_mid <=> other_uuid.time_mid
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return check if check != 0
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check = self.time_hi_and_version <=> other_uuid.time_hi_and_version
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return check if check != 0
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check = self.clock_seq_hi_and_reserved <=>
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other_uuid.clock_seq_hi_and_reserved
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return check if check != 0
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check = self.clock_seq_low <=> other_uuid.clock_seq_low
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return check if check != 0
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for i in 0..5
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if (self.nodes[i] < other_uuid.nodes[i])
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return -1
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end
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if (self.nodes[i] > other_uuid.nodes[i])
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return 1
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end
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end
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return 0
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end
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##
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# Returns a representation of the object's state
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def inspect
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return "#<UUID:0x#{self.object_id.to_s(16)} UUID:#{self.to_s}>"
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end
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##
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# Returns the hex digest of the UUID object.
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def hexdigest
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(self.frozen? ?
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generate_hexdigest : (@hexdigest ||= generate_hexdigest)
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).dup
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end
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##
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# Returns the raw bytes that represent this UUID.
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def raw
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(self.frozen? ? generate_raw : (@raw ||= generate_raw)).dup
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end
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##
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# Returns a string representation for this UUID.
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def to_s
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(self.frozen? ? generate_s : (@string ||= generate_s)).dup
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end
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alias_method :to_str, :to_s
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##
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# Returns an integer representation for this UUID.
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def to_i
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self.frozen? ? generate_i : (@integer ||= generate_i)
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end
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##
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# Returns a URI string for this UUID.
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def to_uri
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return "urn:uuid:#{self.to_s}"
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end
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##
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# Returns an integer hash value.
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def hash
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self.frozen? ? generate_hash : (@hash ||= generate_hash)
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end
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protected
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##
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# Generates the hex digest of the UUID object.
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#
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# @api private
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def generate_hexdigest
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return self.to_i.to_s(16).rjust(32, "0")
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end
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# Generates an integer hash value.
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#
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# @api private
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def generate_hash
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return self.to_i % 0x3fffffff
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end
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##
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# Generates an integer representation for this UUID.
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#
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# @api private
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def generate_i
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return (begin
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bytes = (time_low << 96) + (time_mid << 80) +
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(time_hi_and_version << 64) + (clock_seq_hi_and_reserved << 56) +
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(clock_seq_low << 48)
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for i in 0..5
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bytes += (nodes[i] << (40 - (i * 8)))
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end
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bytes
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end)
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end
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##
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# Generates a string representation for this UUID.
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#
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# @api private
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def generate_s
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result = sprintf("%8.8x-%4.4x-%4.4x-%2.2x%2.2x-", @time_low, @time_mid,
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@time_hi_and_version, @clock_seq_hi_and_reserved, @clock_seq_low);
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for i in 0..5
|
|
result << sprintf("%2.2x", @nodes[i])
|
|
end
|
|
return result.downcase
|
|
end
|
|
|
|
##
|
|
# Generates the raw bytes that represent this UUID.
|
|
#
|
|
# @api private
|
|
def generate_raw
|
|
return self.class.convert_int_to_byte_string(self.to_i, 16)
|
|
end
|
|
|
|
public
|
|
##
|
|
# Returns true if this UUID is exactly equal to the other UUID.
|
|
def eql?(other)
|
|
return self == other
|
|
end
|
|
|
|
#
|
|
# Determine what OS we're running on. Helps decide how to find the MAC
|
|
#
|
|
def self.os_class
|
|
require 'rbconfig'
|
|
os_platform = RbConfig::CONFIG['target_os']
|
|
os_class = nil
|
|
if (os_platform =~ /win/i && !(os_platform =~ /darwin/i)) ||
|
|
os_platform =~ /w32/i
|
|
os_class = :windows
|
|
elsif os_platform =~ /solaris/i
|
|
os_class = :solaris
|
|
elsif os_platform =~ /netbsd/i
|
|
os_class = :netbsd
|
|
elsif os_platform =~ /openbsd/i
|
|
os_class = :openbsd
|
|
end
|
|
end
|
|
|
|
# making these class variables helps with testing
|
|
@ifconfig_command = "ifconfig"
|
|
@ifconfig_path_default = "/sbin/ifconfig"
|
|
@ip_command = "ip"
|
|
@ip_path_default = "/sbin/ip"
|
|
|
|
class << self
|
|
attr_accessor :ifconfig_command, :ifconfig_path_default
|
|
attr_accessor :ip_command, :ip_path_default
|
|
end
|
|
|
|
#
|
|
# Find the path of the ifconfig(8) command if it is present
|
|
#
|
|
def self.ifconfig_path
|
|
path = `which #{UUID.ifconfig_command} 2>/dev/null`.strip
|
|
path = UUID.ifconfig_path_default if (path == "" && File.exist?(UUID.ifconfig_path_default))
|
|
return (path === "" ? nil : path)
|
|
end
|
|
|
|
#
|
|
# Find the path of the ip(8) command if it is present
|
|
#
|
|
def self.ip_path
|
|
path = `which #{UUID.ip_command} 2>/dev/null`.strip
|
|
path = UUID.ip_path_default if (path == "" && File.exist?(UUID.ip_path_default))
|
|
return (path === "" ? nil : path)
|
|
end
|
|
|
|
#
|
|
# Call the ifconfig or ip command that is found
|
|
#
|
|
def self.ifconfig(all=nil)
|
|
# find the path of the ifconfig command
|
|
ifconfig_path = UUID.ifconfig_path
|
|
|
|
# if it does not exist, try the ip command
|
|
if ifconfig_path == nil
|
|
ifconfig_path = "#{UUID.ip_path} addr list"
|
|
# all makes no sense when using ip(1)
|
|
all = nil
|
|
end
|
|
|
|
all_switch = all == nil ? "" : "-a"
|
|
return `#{ifconfig_path} #{all_switch}` if not ifconfig_path == nil
|
|
end
|
|
|
|
# Match and return the first Mac address found
|
|
def self.first_mac(instring)
|
|
mac_regexps = [
|
|
Regexp.new("address:? (#{(["[0-9a-fA-F]{2}"] * 6).join(":")})"),
|
|
Regexp.new("addr:? (#{(["[0-9a-fA-F]{2}"] * 6).join(":")})"),
|
|
Regexp.new("ether:? (#{(["[0-9a-fA-F]{1,2}"] * 6).join(":")})"),
|
|
Regexp.new("HWaddr:? (#{(["[0-9a-fA-F]{2}"] * 6).join(":")})"),
|
|
Regexp.new("link/ether? (#{(["[0-9a-fA-F]{2}"] * 6).join(":")})"),
|
|
Regexp.new("(#{(["[0-9a-fA-F]{2}"] * 6).join(":")})"),
|
|
Regexp.new("(#{(["[0-9a-fA-F]{2}"] * 6).join("-")})")
|
|
]
|
|
parse_mac = lambda do |output|
|
|
(mac_regexps.map do |regexp|
|
|
result = output[regexp, 1]
|
|
result.downcase.gsub(/-/, ":") if result != nil
|
|
end).compact.first
|
|
end
|
|
|
|
mac = parse_mac.call(instring)
|
|
if mac
|
|
# expand octets that were compressed (solaris)
|
|
return (mac.split(':').map do |octet|
|
|
(octet.length == 1 ? "0#{octet}" : octet)
|
|
end).join(':')
|
|
else
|
|
return nil
|
|
end
|
|
end
|
|
|
|
##
|
|
# Returns the MAC address of the current computer's network card.
|
|
# Returns nil if a MAC address could not be found.
|
|
def self.mac_address
|
|
if !defined?(@@mac_address)
|
|
require 'rbconfig'
|
|
|
|
os_class = UUID.os_class
|
|
|
|
if os_class == :windows
|
|
begin
|
|
@@mac_address = UUID.first_mac `ipconfig /all`
|
|
rescue
|
|
end
|
|
else # linux, bsd, macos, solaris
|
|
@@mac_address = UUID.first_mac(UUID.ifconfig(:all))
|
|
end
|
|
|
|
if @@mac_address != nil
|
|
if @@mac_address.respond_to?(:to_str)
|
|
@@mac_address = @@mac_address.to_str
|
|
else
|
|
@@mac_address = @@mac_address.to_s
|
|
end
|
|
@@mac_address.downcase!
|
|
@@mac_address.strip!
|
|
end
|
|
|
|
# Verify that the MAC address is in the right format.
|
|
# Nil it out if it isn't.
|
|
unless @@mac_address.respond_to?(:scan) &&
|
|
@@mac_address.scan(/#{(["[0-9a-f]{2}"] * 6).join(":")}/)
|
|
@@mac_address = nil
|
|
end
|
|
end
|
|
return @@mac_address
|
|
end
|
|
|
|
##
|
|
# Allows users to set the MAC address manually in cases where the MAC
|
|
# address cannot be obtained programatically.
|
|
def self.mac_address=(new_mac_address)
|
|
@@mac_address = new_mac_address
|
|
end
|
|
|
|
# The following methods are not part of the public API,
|
|
# and generally should not be called directly.
|
|
|
|
|
|
##
|
|
# Creates a new UUID from a SHA1 or MD5 hash
|
|
#
|
|
# @api private
|
|
def self.create_from_hash(hash_class, namespace, name)
|
|
if hash_class == Digest::MD5
|
|
version = 3
|
|
elsif hash_class == Digest::SHA1
|
|
version = 5
|
|
else
|
|
raise ArgumentError,
|
|
"Expected Digest::SHA1 or Digest::MD5, got #{hash_class.name}."
|
|
end
|
|
hash = hash_class.new
|
|
hash.update(namespace.raw)
|
|
hash.update(name)
|
|
hash_string = hash.to_s[0..31]
|
|
new_uuid = self.parse("#{hash_string[0..7]}-#{hash_string[8..11]}-" +
|
|
"#{hash_string[12..15]}-#{hash_string[16..19]}-#{hash_string[20..31]}")
|
|
|
|
new_uuid.time_hi_and_version &= 0x0FFF
|
|
new_uuid.time_hi_and_version |= (version << 12)
|
|
new_uuid.clock_seq_hi_and_reserved &= 0x3F
|
|
new_uuid.clock_seq_hi_and_reserved |= 0x80
|
|
return new_uuid
|
|
end
|
|
|
|
##
|
|
# @api private
|
|
def self.convert_int_to_byte_string(integer, size)
|
|
byte_string = ""
|
|
if byte_string.respond_to?(:force_encoding)
|
|
byte_string.force_encoding(Encoding::ASCII_8BIT)
|
|
end
|
|
for i in 0..(size - 1)
|
|
byte_string << ((integer >> (((size - 1) - i) * 8)) & 0xFF)
|
|
end
|
|
return byte_string
|
|
end
|
|
|
|
##
|
|
# @api private
|
|
def self.convert_byte_string_to_int(byte_string)
|
|
if byte_string.respond_to?(:force_encoding)
|
|
byte_string.force_encoding(Encoding::ASCII_8BIT)
|
|
end
|
|
integer = 0
|
|
size = byte_string.size
|
|
for i in 0..(size - 1)
|
|
ordinal = (byte_string[i].respond_to?(:ord) ?
|
|
byte_string[i].ord : byte_string[i])
|
|
integer += (ordinal << (((size - 1) - i) * 8))
|
|
end
|
|
return integer
|
|
end
|
|
end
|
|
|
|
##
|
|
# Constant Regexp that matches a UUID and captures its components.
|
|
UUID_REGEXP = Regexp.new("^([0-9a-f]{8})-([0-9a-f]{4})-([0-9a-f]{4})-" +
|
|
"([0-9a-f]{2})([0-9a-f]{2})-([0-9a-f]{12})$")
|
|
|
|
##
|
|
# Constant that represents the DNS namespace.
|
|
UUID_DNS_NAMESPACE = UUID.parse("6ba7b810-9dad-11d1-80b4-00c04fd430c8")
|
|
|
|
##
|
|
# Constant that represents the URL namespace.
|
|
UUID_URL_NAMESPACE = UUID.parse("6ba7b811-9dad-11d1-80b4-00c04fd430c8")
|
|
|
|
##
|
|
# Constant that represents the OID namespace.
|
|
UUID_OID_NAMESPACE = UUID.parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8")
|
|
|
|
##
|
|
# Constant that represents the X500 namespace.
|
|
UUID_X500_NAMESPACE = UUID.parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8")
|
|
end
|