Class: Rack::Utils::HeaderHash

Inherits:

Hash

• Object
• Hash
• Rack::Utils::HeaderHash

show all

Defined in:

rack/rack/utils.rb

Overview

Class Method Summary (collapse)

• + (void) new(hash = {})

Instance Method Summary (collapse)

• - (void) [](k)
• - (void) []=(k, v)
• - (void) delete(k)
• - (void) each
• - (Boolean) include?(k) (also: #has_key?, #member?, #key?)
• - (HeaderHash) initialize(hash = {}) constructor

  A new instance of HeaderHash.

• - (void) merge(other)
• - (void) merge!(other)
• - (void) replace(other)
• - (void) to_hash

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# File 'rack/rack/utils.rb', line 443

def initialize(hash={})
  super()
  @names = {}
  hash.each { |k, v| self[k] = v }
end

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# File 'rack/rack/utils.rb', line 439

def self.new(hash={})
  HeaderHash === hash ? hash : super(hash)
end

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# File 'rack/rack/utils.rb', line 461

def [](k)
  super(k) || super(@names[k.downcase])
end

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# File 'rack/rack/utils.rb', line 465

def []=(k, v)
  canonical = k.downcase
  delete k if @names[canonical] && @names[canonical] != k # .delete is expensive, don't invoke it unless necessary
  @names[k] = @names[canonical] = k
  super k, v
end

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# File 'rack/rack/utils.rb', line 472

def delete(k)
  canonical = k.downcase
  result = super @names.delete(canonical)
  @names.delete_if { |name,| name.downcase == canonical }
  result
end

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# File 'rack/rack/utils.rb', line 449

def each
  super do |k, v|
    yield(k, v.respond_to?(:to_ary) ? v.to_ary.join("\n") : v)
  end
end

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# File 'rack/rack/utils.rb', line 479

def include?(k)
  @names.include?(k) || @names.include?(k.downcase)
end

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# File 'rack/rack/utils.rb', line 492

def merge(other)
  hash = dup
  hash.merge! other
end

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# File 'rack/rack/utils.rb', line 487

def merge!(other)
  other.each { |k, v| self[k] = v }
  self
end

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# File 'rack/rack/utils.rb', line 497

def replace(other)
  clear
  other.each { |k, v| self[k] = v }
  self
end

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# File 'rack/rack/utils.rb', line 455

def to_hash
  hash = {}
  each { |k,v| hash[k] = v }
  hash
end