


#
# Sort large text files in a minimum amount of memory
#
import argparse
import os







class 				__SCREAMING_SNAKE_CASE   :
      A				:							str    							=     'block_{0}.dat'


      def __init__(							self							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   int					   =		filename
            lowercase			:   List[str]					   =		[]


      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   List[Any]					   =		self.BLOCK_FILENAME_FORMAT.format(SCREAMING_SNAKE_CASE__		)
            with open(SCREAMING_SNAKE_CASE__							,						'''w'''		) as file:
                  file.write(SCREAMING_SNAKE_CASE__		)
            self.block_filenames.append(SCREAMING_SNAKE_CASE__		)


      def        __lowerCamelCase			(							self		):
            return self.block_filenames


      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__=None		):
            lowercase			:   Tuple					   =		0
            with open(self.filename		) as file:
                  while True:
                        lowercase			:   Any					   =		file.readlines(SCREAMING_SNAKE_CASE__		)

                        if lines == []:
                              break

                        if sort_key is None:
                              lines.sort()
                        else:
                              lines.sort(key=SCREAMING_SNAKE_CASE__		)

                        self.write_block(''''''.join(SCREAMING_SNAKE_CASE__		)							,						SCREAMING_SNAKE_CASE__		)
                        i += 1






      def        __lowerCamelCase			(							self		):
            map(os.remove							,						self.block_filenames		)







class 				__SCREAMING_SNAKE_CASE   :


      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   int					   =		-1
            lowercase			:   List[str]					   =		None

            for i in range(len(SCREAMING_SNAKE_CASE__		)		):
                  if min_str is None or choices[i] < min_str:
                        lowercase			:   Dict					   =		i

            return min_index







class 				__SCREAMING_SNAKE_CASE   :


      def __init__(							self							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   Tuple					   =		files
            lowercase			:   List[Any]					   =		set()
            lowercase			:   Dict					   =		len(SCREAMING_SNAKE_CASE__		)
            lowercase			:   Optional[Any]					   =		{i: None for i in range(self.num_buffers		)}


      def        __lowerCamelCase			(							self		):
            return {
                i: self.buffers[i] for i in range(self.num_buffers		) if i not in self.empty
            }


      def        __lowerCamelCase			(							self		):
            for i in range(self.num_buffers		):
                  if self.buffers[i] is None and i not in self.empty:
                        lowercase			:   Optional[int]					   =		self.files[i].readline()

                        if self.buffers[i] == "":
                              self.empty.add(SCREAMING_SNAKE_CASE__		)
                              self.files[i].close()

            if len(self.empty		) == self.num_buffers:
                  return False

            return True






      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   List[str]					   =		self.buffers[index]
            lowercase			:   Tuple					   =		None

            return value







class 				__SCREAMING_SNAKE_CASE   :


      def __init__(							self							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   List[Any]					   =		merge_strategy


      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   Optional[Any]					   =		FilesArray(self.get_file_handles(SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__		)		)
            with open(SCREAMING_SNAKE_CASE__							,						'''w'''							,						SCREAMING_SNAKE_CASE__		) as outfile:
                  while buffers.refresh():
                        lowercase			:   Any					   =		self.merge_strategy.select(buffers.get_dict()		)
                        outfile.write(buffers.unshift(SCREAMING_SNAKE_CASE__		)		)






      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   Optional[int]					   =		{}

            for i in range(len(SCREAMING_SNAKE_CASE__		)		):
                  lowercase			:   int					   =		open(filenames[i]							,						'''r'''							,						SCREAMING_SNAKE_CASE__		)  # noqa: UP015

            return files







class 				__SCREAMING_SNAKE_CASE   :


      def __init__(							self							,						SCREAMING_SNAKE_CASE__		):
            lowercase			:   int					   =		block_size


      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__=None		):
            lowercase			:   Optional[int]					   =		self.get_number_blocks(SCREAMING_SNAKE_CASE__							,						self.block_size		)
            lowercase			:   Union[str, Any]					   =		FileSplitter(SCREAMING_SNAKE_CASE__		)
            splitter.split(self.block_size							,						SCREAMING_SNAKE_CASE__		)

            lowercase			:   List[Any]					   =		FileMerger(NWayMerge()		)
            lowercase			:   List[Any]					   =		self.block_size / (num_blocks + 1)
            merger.merge(splitter.get_block_filenames()							,						filename + '''.out'''							,						SCREAMING_SNAKE_CASE__		)

            splitter.cleanup()






      def        __lowerCamelCase			(							self							,						SCREAMING_SNAKE_CASE__							,						SCREAMING_SNAKE_CASE__		):
            return (os.stat(SCREAMING_SNAKE_CASE__		).st_size / block_size) + 1





def 			__lowercase	(						_UpperCamelCase     )    ->int:







      """simple docstring"""

      if string[-1].lower() == "k":
            return int(string[:-1]     ) * 1024
      elif string[-1].lower() == "m":
            return int(string[:-1]     ) * 1024 * 1024
      elif string[-1].lower() == "g":
            return int(string[:-1]     ) * 1024 * 1024 * 1024
      else:
            return int(_UpperCamelCase     )




def 			__lowercase	(						)    ->List[Any]:







      """simple docstring"""

      lowercase			:   Optional[Any]					   =		argparse.ArgumentParser()
      parser.add_argument(
          '''-m''',    '''--mem''',    help='''amount of memory to use for sorting''',    default='''100M'''     )
      parser.add_argument(
          '''filename''',    metavar='''<filename>''',    nargs=1,    help='''name of file to sort'''     )
      lowercase			:   Dict					   =		parser.parse_args()

      lowercase			:   Optional[Any]					   =		ExternalSort(parse_memory(args.mem     )     )
      sorter.sort(args.filename[0]     )


if __name__ == "__main__":
  main()





from __future__ import annotations




def 			__lowercase	(						_UpperCamelCase     )    ->list[int]:







      """simple docstring"""

      assert (
          isinstance(_UpperCamelCase,    _UpperCamelCase     ) and mask > 0
      ), f"""mask needs to be positive integer, your input {mask}"""
      lowercase			:   Optional[int]					   =		[]
      lowercase			:   Optional[int]					   =		mask

      while submask:
            all_submasks.append(_UpperCamelCase     )
            lowercase			:   Dict					   =		(submask - 1) & mask

      return all_submasks


if __name__ == "__main__":
  import doctest

  doctest.testmod()

