Class: Rnfse::Hash

Inherits:
Hash
  • Object
show all
Defined in:
lib/rnfse/hash.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(constructor = {}) ⇒ Hash

Returns a new instance of Hash.



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# File 'lib/rnfse/hash.rb', line 6

def initialize(constructor = {})
  if constructor.is_a?(::Hash)
    super()
    update(constructor)
  else
    super(constructor)
  end
end

Class Method Details

.camelize_and_symbolize_keys(obj, uppercase_first_letter = true) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 41

def self.camelize_and_symbolize_keys(obj, uppercase_first_letter = true)
  self.transform_keys(obj) do |key|
    String.camelize(key.to_s, uppercase_first_letter).to_sym rescue key
  end
end

.replace_key_values(obj, key, &block) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 119

def self.replace_key_values(obj, key, &block)
  parent, children = case
                     when key.kind_of?(::Regexp)
                       [ key, [] ]
                     when key.kind_of?(::Array)
                       [ key.first, key[1..-1] ]
                     else
                       parts = key.to_s.split('/')
                       [ parts.first, parts[1..-1] ]
                     end
  regex = parent.kind_of?(::Regexp) ? parent : /\A#{parent}\Z/

  case
  when obj.kind_of?(::Hash)
    result = {}
    obj.each_key do |k|
      case
      when (regex.match(k) and children.empty?)
        result.merge!(yield(k, obj[k]))
      when (regex.match(k) and !children.empty?)
        result[k] = self.replace_key_values(obj[k], children, &block)
      else
        result[k] = self.replace_key_values(obj[k], key, &block)
      end
    end
    result
  when obj.kind_of?(::Array)
    result = []
    obj.each do |elem|
      result << self.replace_key_values(elem, key, &block)
    end
    result
  else
    obj
  end
end

.stringify_keys(obj) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 25

def self.stringify_keys(obj)
  self.transform_keys(obj) { |key| key.to_s rescue key }
end

.symbolize_keys(obj) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 33

def self.symbolize_keys(obj)
  self.transform_keys(obj) { |key| key.to_sym rescue key }
end

.transform_keys(obj, regex = nil, &block) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 61

def self.transform_keys(obj, regex = nil, &block)
  regex = /.*/ if regex.nil?

  case
  when obj.kind_of?(::Hash)
    result = {}
    obj.each_key do |key|
      if regex.match(key)
        result[yield(key)] = self.transform_keys(obj[key], regex, &block)
      else
        result[key] = self.transform_keys(obj[key], regex, &block)
      end
    end
    result
  when obj.kind_of?(::Array)
    result = []
    obj.each do |elem|
      result << self.transform_keys(elem, regex, &block)
    end
    result
  else
    obj
  end
end

.transform_values(obj, key, &block) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 90

def self.transform_values(obj, key, &block)
  key = /\A#{key}\Z/ unless key.kind_of?(::Regexp)

  case
  when obj.kind_of?(::Hash)
    result = {}
    obj.each_key do |k|
      if key.match(k)
        result[k] = yield(obj[k])
      else
        result[k] = self.transform_values(obj[k], key, &block)
      end
    end
    result
  when obj.kind_of?(::Array)
    result = []
    obj.each do |elem|
      result << self.transform_values(elem, key, &block)
    end
    result
  else
    obj
  end
end

.underscore_and_symbolize_keys(obj) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 51

def self.underscore_and_symbolize_keys(obj)
  self.transform_keys(obj) do |key|
    String.underscore(key.to_s).to_sym rescue key
  end
end

Instance Method Details

#camelize_and_symbolize_keys(uppercase_first_letter = true) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 47

def camelize_and_symbolize_keys(uppercase_first_letter = true)
  self.class.camelize_and_symbolize_keys(self, uppercase_first_letter)
end

#replace_key_values(key, &block) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 156

def replace_key_values(key, &block)
  self.class.replace_key_values(self, key, &block)
end

#stringify_keys ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 29

def stringify_keys
  self.class.stringify_keys(self)
end

#symbolize_keys ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 37

def symbolize_keys
  self.class.symbolize_keys(self)
end

#transform_keys(regex = nil, &block) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 86

def transform_keys(regex = nil, &block)
  self.class.transform_keys(self, regex, &block)
end

#transform_values(key, &block) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 115

def transform_values(key, &block)
  self.class.transform_values(self, key, &block)
end

#underscore_and_symbolize_keys ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 57

def underscore_and_symbolize_keys
  self.class.underscore_and_symbolize_keys(self)
end

#update(other_hash) ⇒ Object 



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# File 'lib/rnfse/hash.rb', line 15

def update(other_hash)
  if other_hash.is_a?(Hash)
    super(other_hash)
  else
    other_hash.to_hash.each_pair do |key, value|
      self[key] = value
    end
  end
end