method

determine_encoding

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determine_encoding(encoding, internal_encoding) private

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# File lib/csv.rb, line 1319
  def determine_encoding(encoding, internal_encoding)
    # honor the IO encoding if we can, otherwise default to ASCII-8BIT
    io_encoding = raw_encoding
    return io_encoding if io_encoding

    return Encoding.find(internal_encoding) if internal_encoding

    if encoding
      encoding, = encoding.split(":", 2) if encoding.is_a?(String)
      return Encoding.find(encoding)
    end

    Encoding.default_internal || Encoding.default_external
  end
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