class HTMLEntities::Decoder

:nodoc:

def decode(source) 

def decode(source)
  prepare(source).gsub(@entity_regexp){
    if $1 && codepoint = @map[$1]
      [codepoint].pack('U')
    elsif $2
      [$2.to_i(10)].pack('U')
    elsif $3
      [$3.to_i(16)].pack('U')
    else
      $&
    end
  }
end

def entity_regexp 

def entity_regexp
  key_lengths = @map.keys.map{ |k| k.length }
  if @flavor == 'expanded'
    entity_name_pattern = '(?:b\.)?[a-z][a-z0-9]'
  else
    entity_name_pattern = '[a-z][a-z0-9]'
  end
  /&(?:(#{entity_name_pattern}{#{key_lengths.min - 1},#{key_lengths.max - 1}})|#([0-9]{1,7})|#x([0-9a-f]{1,6}));/i
end

def initialize(flavor)

:nodoc: 
def initialize(flavor)
  @flavor = flavor
  @map = HTMLEntities::MAPPINGS[@flavor]
  @entity_regexp = entity_regexp
end

def prepare(string) #:nodoc:

:nodoc: 
def prepare(string) #:nodoc:
  string.to_s.encode(Encoding::UTF_8)
end