decode_lines

in lib/openai/internal/util.rb [705:733]

• 26 lines of code
• 6 McCabe index (conditional complexity)

        def decode_lines(enum)
          re = /(\r\n|\r|\n)/
          buffer = String.new
          cr_seen = nil

          chain_fused(enum) do |y|
            enum.each do |row|
              offset = buffer.bytesize
              buffer << row
              while (match = re.match(buffer, cr_seen&.to_i || offset))
                case [match.captures.first, cr_seen]
                in ["\r", nil]
                  cr_seen = match.end(1)
                  next
                in ["\r" | "\r\n", Integer]
                  y << buffer.slice!(..(cr_seen.pred))
                else
                  y << buffer.slice!(..(match.end(1).pred))
                end
                offset = 0
                cr_seen = nil
              end
            end

            y << buffer.slice!(..(cr_seen.pred)) unless cr_seen.nil?
            y << buffer unless buffer.empty?
          end
        end