Class: TwitterCldr::DataReaders::NumberDataReader

Inherits:
DataReader
  • Object
show all
Defined in:
lib/twitter_cldr/data_readers/number_data_reader.rb

Constant Summary collapse

DEFAULT_NUMBER_SYSTEM = 
"latn"
ABBREVIATED_MIN_POWER = 
3
ABBREVIATED_MAX_POWER = 
14
NUMBER_MIN = 
10 ** ABBREVIATED_MIN_POWER
NUMBER_MAX = 
10 ** (ABBREVIATED_MAX_POWER + 1)
BASE_PATH = 
[:numbers, :formats]
SYMBOL_PATH = 
[:numbers, :symbols]
TYPE_PATHS = 
{
  default:       [:decimal, :patterns],
  decimal:       [:decimal, :patterns],
  long_decimal:  [:decimal, :patterns, :long],
  short_decimal: [:decimal, :patterns, :short],
  currency:      [:currency, :patterns],
  percent:       [:percent, :patterns]
}
ABBREVIATED_TYPES = 
[:long_decimal, :short_decimal]
DEFAULT_TYPE = 
:decimal
DEFAULT_FORMAT = 
:default
DEFAULT_SIGN = 
:positive
REDIRECT_REGEX = 
/\Anumbers\.formats\.\w+\.patterns\.\w+\z/

Instance Attribute Summary collapse

Attributes inherited from DataReader

#locale

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from DataReader

#pattern_at_path

Constructor Details

#initialize(locale, options = {}) ⇒ NumberDataReader

Returns a new instance of NumberDataReader.



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 43

def initialize(locale, options = {})
  super(locale)
  @type = options[:type] || DEFAULT_TYPE

  unless type && TYPE_PATHS.include?(type.to_sym)
    raise ArgumentError.new("Type #{type} is not supported")
  end

  @format = options[:format] || DEFAULT_FORMAT
end

Instance Attribute Details

#format ⇒ Object (readonly)

Returns the value of attribute format.



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 37

def format
  @format
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 37

def type
  @type
end

Class Method Details

.types ⇒ Object 



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 39

def self.types
  TYPE_PATHS.keys
end

Instance Method Details

#format_number(number, options = {}) ⇒ Object 



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 54

def format_number(number, options = {})
  precision = options[:precision] || 0
  pattern_for_number = pattern(number, precision == 0)

  options[:locale] = self.locale

  if pattern_for_number == '0'
    # there's no specific formatting for the number in the current locale
    number.to_s
  else
    tokens = tokenizer.tokenize(pattern_for_number)
    formatter.format(tokens, number, options)
  end
end

#formatter ⇒ Object 



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 106

def formatter
  @formatter ||= begin
    klass_name = type.to_s.split("_").map(&:capitalize).join
    klass = TwitterCldr::Formatters.const_get(:"#{klass_name}Formatter")
    klass.new(self)
  end
end

#number_system_for(type) ⇒ Object 



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 94

def number_system_for(type)
  (traverse(BASE_PATH + [type]) || {}).fetch(:number_system, DEFAULT_NUMBER_SYSTEM)
end

#pattern(number = nil, decimal = true) ⇒ Object 



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 69

def pattern(number = nil, decimal = true)
  sign = number < 0 ? :negative : :positive
  path = BASE_PATH + if valid_type_for?(number, type)
    TYPE_PATHS[type]
  else
    TYPE_PATHS[:default]
  end

  pattern = get_pattern_data(path)

  if pattern[format]
    pattern = pattern[format]
  end

  if number
    pattern = pattern_for_number(pattern, number, decimal)
  end

  if pattern.is_a?(String)
    pattern_for_sign(pattern, sign)
  else
    pattern
  end
end

#symbols ⇒ Object 



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 98

def symbols
  @symbols ||= traverse(SYMBOL_PATH)
end

#tokenizer ⇒ Object 



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# File 'lib/twitter_cldr/data_readers/number_data_reader.rb', line 102

def tokenizer
  @tokenizer ||= TwitterCldr::Tokenizers::NumberTokenizer.new(self)
end