Class: Text::Gen::Function::Pluralizer

Inherits:
Object
  • Object
show all
Defined in:
lib/text/gen/function/pluralizer.rb

Constant Summary collapse

EXCEPTIONS = 
{
  "foot" => "feet",
  "axis" => "axes",
  "child" => "children",
  "codex" => "codices",
  "die" => "dice",
  "dwarf" => "dwarves",
  "goose" => "geese",
  "elf" => "elves",
  "man" => "men",
  "ox" => "oxen",
  "thief" => "thieves",
  "tooth" => "teeth",
  "wolf" => "wolves",
  "woman" => "women"
}.freeze
SINGLE = 
Set.new(%w[a an the this that my your his her its our their])

Class Method Summary collapse

Class Method Details

.ends_with_y(str) ⇒ Object 



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# File 'lib/text/gen/function/pluralizer.rb', line 57

def ends_with_y(str)
  "#{str[0..-2]}ies" if str.end_with?("y")
end

.exceptions(str) ⇒ Object 



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# File 'lib/text/gen/function/pluralizer.rb', line 47

def exceptions(str)
  EXCEPTIONS[str]
end

.others(str) ⇒ Object 



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# File 'lib/text/gen/function/pluralizer.rb', line 51

def others(str)
  if str.end_with?("s") || str.end_with?("x") || str.end_with?("z") || str.end_with?("ch") || str.end_with?("sh")
    "#{str}es"
  end
end

.pluralize(str) ⇒ Object 



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# File 'lib/text/gen/function/pluralizer.rb', line 27

def pluralize(str)
  return str if str.empty?

  arr = str.split(/\s+/)
  return str if arr.length < 2

  num = to_num(arr[0])
  if num && num > 1
    dc = arr[-1].downcase
    arr[-1] = exceptions(dc) || others(dc) || ends_with_y(dc) || simple(dc)
  end
  arr.join(" ")
end

.simple(str) ⇒ Object 



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# File 'lib/text/gen/function/pluralizer.rb', line 61

def simple(str)
  "#{str}s"
end

.to_num(str) ⇒ Object 



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# File 'lib/text/gen/function/pluralizer.rb', line 41

def to_num(str)
  return 1 if SINGLE.include?(str.downcase)

  str =~ /\d+/ ? str.to_i : nil
end