Method: PDF::Reader::Encoding#initialize

Defined in:
lib/pdf/reader/encoding.rb

#initialize(enc) ⇒ Encoding

Returns a new instance of Encoding.



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# File 'lib/pdf/reader/encoding.rb', line 35

def initialize(enc)
  if enc.kind_of?(Hash)
    self.differences=enc[:Differences] if enc[:Differences]
    enc = enc[:Encoding] || enc[:BaseEncoding]
  elsif enc != nil
    enc = enc.to_sym
  end

  case enc
    when nil                   then 
      load_mapping File.dirname(__FILE__) + "/encodings/standard.txt"
      @unpack = "C*"
    when "Identity-H".to_sym   then 
      @unpack = "n*"
      @to_unicode_required = true
    when :MacRomanEncoding     then 
      load_mapping File.dirname(__FILE__) + "/encodings/mac_roman.txt"
      @unpack = "C*"
    when :MacExpertEncoding    then 
      load_mapping File.dirname(__FILE__) + "/encodings/mac_expert.txt"
      @unpack = "C*"
    when :PDFDocEncoding       then 
      load_mapping File.dirname(__FILE__) + "/encodings/pdf_doc.txt"
      @unpack = "C*"
    when :StandardEncoding     then 
      load_mapping File.dirname(__FILE__) + "/encodings/standard.txt"
      @unpack = "C*"
    when :SymbolEncoding       then 
      load_mapping File.dirname(__FILE__) + "/encodings/symbol.txt"
      @unpack = "C*"
    when :UTF16Encoding        then 
      @unpack = "n*"
    when :WinAnsiEncoding      then 
      load_mapping File.dirname(__FILE__) + "/encodings/win_ansi.txt"
      @unpack = "C*"
    when :ZapfDingbatsEncoding then 
      load_mapping File.dirname(__FILE__) + "/encodings/zapf_dingbats.txt"
      @unpack = "C*"
    else raise UnsupportedFeatureError, "#{enc} is not currently a supported encoding"
  end
end