Class: Inflector

Inherits:
Object
  • Object
show all
Defined in:
lib/motion_model/ext.rb

Overview

Inflector is a singleton class that helps singularize, pluralize and other-thing-ize words. It is very much based on the Rails ActiveSupport implementation or Inflector

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize ⇒ Inflector

nodoc



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# File 'lib/motion_model/ext.rb', line 59

def initialize #nodoc
  reset
end

Instance Attribute Details

#irregulars ⇒ Object (readonly)

Returns the value of attribute irregulars.



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# File 'lib/motion_model/ext.rb', line 151

def irregulars
  @irregulars
end

#plurals ⇒ Object (readonly)

Returns the value of attribute plurals.



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# File 'lib/motion_model/ext.rb', line 151

def plurals
  @plurals
end

#singulars ⇒ Object (readonly)

Returns the value of attribute singulars.



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# File 'lib/motion_model/ext.rb', line 151

def singulars
  @singulars
end

#uncountables ⇒ Object (readonly)

Returns the value of attribute uncountables.



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# File 'lib/motion_model/ext.rb', line 151

def uncountables
  @uncountables
end

Class Method Details

.inflections ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 153

def self.inflections
  if block_given?
    yield Inflector.instance
  else
    Inflector.instance
  end
end

.instance ⇒ Object

nodoc



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# File 'lib/motion_model/ext.rb', line 55

def self.instance #nodoc
  @__instance__ ||= new
end

Instance Method Details

#inflect(word, direction) ⇒ Object

nodoc



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# File 'lib/motion_model/ext.rb', line 182

def inflect(word, direction) #nodoc
  return word if uncountable?(word)

  subject = word.dup

  @irregulars.each do |rule|
    return subject if subject.gsub!(rule.first, rule.last)
  end

  sense_group = direction == :singularize ? @singulars : @plurals
  sense_group.each do |rule|
    return subject if subject.gsub!(rule.first, rule.last)
  end
  subject
end

#irregular(rule, replacement) ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 173

def irregular(rule, replacement)
  @irregulars << [rule, replacement]
end

#plural(rule, replacement) ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 169

def plural(rule, replacement)
  @plurals << [rule, replacement]
end

#pluralize(word) ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 202

def pluralize(word)
  inflect word, :pluralize
end

#reset ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 63

def reset
  # Put singular-form to plural form transformations here
  @plurals = [
    [/^person$/, 'people'],
    [/^man$/, 'men'],
    [/^child$/, 'children'],
    [/^sex$/, 'sexes'],
    [/^move$/, 'moves'],
    [/^cow$/, 'kine'],
    [/^zombie$/, 'zombies'],
    [/(quiz)$/i, '\1zes'],
    [/^(oxen)$/i, '\1'],
    [/^(ox)$/i, '\1en'],
    [/^(m|l)ice$/i, '\1ice'],
    [/^(m|l)ouse$/i, '\1ice'],
    [/(matr|vert|ind)(?:ix|ex)$/i, '\1ices'],
    [/(x|ch|ss|sh)$/i, '\1es'],
    [/([^aeiouy]|qu)y$/i, '\1ies'],
    [/(hive)$/i, '\1s'],
    [/(?:([^f])fe|([lr])f)$/i, '\1\2ves'],
    [/sis$/i, 'ses'],
    [/([ti])a$/i, '\1a'],
    [/([ti])um$/i, '\1a'],
    [/(buffal|tomat)o$/i, '\1oes'],
    [/(bu)s$/i, '\1ses'],
    [/(alias|status)$/i, '\1es'],
    [/(octop|vir)i$/i, '\1i'],
    [/(octop|vir|alumn)us$/i, '\1i'],
    [/^(ax|test)is$/i, '\1es'],
    [/s$/i, 's'],
    [/$/, 's']
  ]

  # Put plural-form to singular form transformations here
  @singulars = [
    [/^people$/, 'person'],
    [/^men$/, 'man'],
    [/^children$/, 'child'],
    [/^sexes$/, 'sex'],
    [/^moves$/, 'move'],
    [/^kine$/, 'cow'],
    [/^zombies$/, 'zombie'],
    [/(database)s$/i, '\1'],
    [/(quiz)zes$/i, '\1'],
    [/(matr)ices$/i, '\1ix'],
    [/(vert|ind)ices$/i, '\1ex'],
    [/^(ox)en/i, '\1'],
    [/(alias|status)(es)?$/i, '\1'],
    [/(octop|vir|alumn)(us|i)$/i, '\1us'],
    [/^(a)x[ie]s$/i, '\1xis'],
    [/(cris|test)(is|es)$/i, '\1is'],
    [/(shoe)s$/i, '\1'],
    [/(o)es$/i, '\1'],
    [/(bus)(es)?$/i, '\1'],
    [/^(m|l)ice$/i, '\1ouse'],
    [/(x|ch|ss|sh)es$/i, '\1'],
    [/(m)ovies$/i, '\1ovie'],
    [/(s)eries$/i, '\1eries'],
    [/([^aeiouy]|qu)ies$/i, '\1y'],
    [/([lr])ves$/i, '\1f'],
    [/(tive)s$/i, '\1'],
    [/(hive)s$/i, '\1'],
    [/([^f])ves$/i, '\1fe'],
    [/(^analy)(sis|ses)$/i, '\1sis'],
    [/((a)naly|(b)a|(d)iagno|(p)arenthe|(p)rogno|(s)ynop|(t)he)(sis|ses)$/i, '\1sis'],
    [/([ti])a$/i, '\1um'],
    [/(n)ews$/i, '\1ews'],
    [/(ss)$/i, '\1'],
    [/s$/i, '']
  ]

  @irregulars = [
  ]

  @uncountables = [
    'equipment',
    'information',
    'rice',
    'money',
    'species',
    'series',
    'fish',
    'sheep',
    'jeans',
    'police'
  ]
end

#singular(rule, replacement) ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 165

def singular(rule, replacement)
  @singulars << [rule, replacement]
end

#singularize(word) ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 198

def singularize(word)
   inflect word, :singularize
end

#uncountable(word) ⇒ Object 



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# File 'lib/motion_model/ext.rb', line 161

def uncountable(word)
  @uncountables << word
end

#uncountable?(word) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion_model/ext.rb', line 177

def uncountable?(word)
  return word if @uncountables.include?(word.downcase)
  false
end