module REXML::Encoding

# File lib/rexml/encoding.rb, line 26
def decode(string)
  string.encode(::Encoding::UTF_8, @encoding)
end

# File lib/rexml/encoding.rb, line 22
def encode(string)
  string.encode(@encoding)
end

# File lib/rexml/encoding.rb, line 7
def encoding=(encoding)
  encoding = encoding.name if encoding.is_a?(::Encoding)
  if encoding.is_a?(String)
    original_encoding = encoding
    encoding = find_encoding(encoding)
    unless encoding
      raise ArgumentError, "Bad encoding name #{original_encoding}"
    end
  end
  encoding = encoding.upcase if encoding
  return false if defined?(@encoding) and encoding == @encoding
  @encoding = encoding || "UTF-8"
  true
end

# File lib/rexml/encoding.rb, line 31
def find_encoding(name)
  case name
  when /\Ashift-jis\z/i
    return "SHIFT_JIS"
  when /\ACP-(\d+)\z/
    name = "CP#{$1}"
  when /\AUTF-8\z/i
    return name
  end
  begin
    ::Encoding::Converter.search_convpath(name, 'UTF-8')
  rescue ::Encoding::ConverterNotFoundError
    return nil
  end
  name
end