Class: Xenon::MediaRange

Inherits:
Object
  • Object
show all
Includes:
Comparable
Defined in:
lib/xenon/media_type.rb

Constant Summary collapse

DEFAULT_Q = 
1.0

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(type, subtype, params = {}) ⇒ MediaRange

Returns a new instance of MediaRange.



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# File 'lib/xenon/media_type.rb', line 116

def initialize(type, subtype, params = {})
  @type = type
  @subtype = subtype
  @q = Float(params.delete('q')) rescue DEFAULT_Q
  @params = params
end

Instance Attribute Details

#params ⇒ Object (readonly)

Returns the value of attribute params.



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# File 'lib/xenon/media_type.rb', line 114

def params
  @params
end

#q ⇒ Object (readonly)

Returns the value of attribute q.



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# File 'lib/xenon/media_type.rb', line 114

def q
  @q
end

#subtype ⇒ Object (readonly)

Returns the value of attribute subtype.



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# File 'lib/xenon/media_type.rb', line 114

def subtype
  @subtype
end

#type ⇒ Object (readonly)

Returns the value of attribute type.



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# File 'lib/xenon/media_type.rb', line 114

def type
  @type
end

Class Method Details

.parse(s) ⇒ Object 



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# File 'lib/xenon/media_type.rb', line 123

def self.parse(s)
  tree = Parsers::MediaRange.new.parse(s)
  Parsers::MediaTypeTransform.new.apply(tree)
rescue Parslet::ParseFailed
  raise Xenon::ParseError.new("Invalid media range (#{s})")
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/xenon/media_type.rb', line 130

def <=>(other)
  dt = compare_types(@type, other.type)
  return dt if dt != 0
  ds = compare_types(@subtype, other.subtype)
  return ds if ds != 0
  dp = params.size <=> other.params.size
  return dp if dp != 0
  @q <=> other.q
end

#=~(media_type) ⇒ Object Also known as: === 



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# File 'lib/xenon/media_type.rb', line 140

def =~(media_type)
  (type == '*' || type == media_type.type) &&
  (subtype == '*' || subtype == media_type.subtype) &&
  params.all? { |n, v| media_type.params[n] == v }
end

#to_s ⇒ Object 



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# File 'lib/xenon/media_type.rb', line 148

def to_s
  s = "#{@type}/#{@subtype}"
  s << @params.map { |n, v| v ? "; #{n}=#{v}" : "; #{n}" }.join
  s << "; q=#{@q}" if @q != DEFAULT_Q
  s
end