Class: FiasReader::Cache::Guid

Inherits:
Object
  • Object
show all
Defined in:
lib/fias_reader/cache/guid.rb

Constant Summary collapse

DASH_STR = 
'-'.freeze
EMPTY_STR = 
''.freeze
GUID_PARTS = 
[
  0..8,
  8..16,
  16..24,
  24..32
].freeze
GUID_FORMAT_STR = 
'%08x'.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(*args) ⇒ Guid

Returns a new instance of Guid.



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# File 'lib/fias_reader/cache/guid.rb', line 13

def initialize(*args)
  if args.size == 1
    guid = args[0]
    case guid
    when Hash
      init_from_hash guid
    when Array
      init_from_array guid
    else
      init_from_guid guid
    end

  elsif args.size == 2
    init_from_hash_slice args[0], args[1]
  elsif args.size > 2
    init_from_array args
  end
end

Instance Attribute Details

#parts ⇒ Object 



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# File 'lib/fias_reader/cache/guid.rb', line 43

def parts
  @parts ||= []
end

Instance Method Details

#init_from_array(val) ⇒ Object 



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# File 'lib/fias_reader/cache/guid.rb', line 49

def init_from_array(val)
  self.parts = val
end

#init_from_guid(guid) ⇒ Object 



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# File 'lib/fias_reader/cache/guid.rb', line 53

def init_from_guid(guid)
  (self.parts = []) && return unless guid
  guid.tr!(DASH_STR, EMPTY_STR)
  self.parts = GUID_PARTS.map { |range| guid[range].to_i(16) }
end

#init_from_hash(hash) ⇒ Object 



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# File 'lib/fias_reader/cache/guid.rb', line 59

def init_from_hash(hash)
  hash.each { |key, val| parts[key[-1].to_i] = val }
end

#init_from_hash_slice(hash, mask) ⇒ Object 



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# File 'lib/fias_reader/cache/guid.rb', line 63

def init_from_hash_slice(hash, mask)
  self.parts = hash.keys.select { |key| key.to_s =~ /^#{mask}\d/ }.each_with_object([]) do |key, obj|
    obj[key[-1].to_i] = hash[key]
  end
end

#to_attr(name) ⇒ Object 



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# File 'lib/fias_reader/cache/guid.rb', line 32

def to_attr(name)
  @parts.each_with_index.each_with_object({}) do |(part, index), result|
    result["#{name}#{index}"] = part
  end
end

#to_guid ⇒ Object 



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# File 'lib/fias_reader/cache/guid.rb', line 39

def to_guid
  @parts.each_with_object('') { |i, str| str << format(GUID_FORMAT_STR, i) }
end