Class OSUtils

awscli/s3transfer/utils.py:252–337

class OSUtils:
    _MAX_FILENAME_LEN = 255

    def get_file_size(self, filename):
        return os.path.getsize(filename)

    def open_file_chunk_reader(self, filename, start_byte, size, callbacks):
        return ReadFileChunk.from_filename(
            filename, start_byte, size, callbacks, enable_callbacks=False
        )

    def open_file_chunk_reader_from_fileobj(
        self,
        fileobj,
        chunk_size,
        full_file_size,
        callbacks,
        close_callbacks=None,
    ):
        return ReadFileChunk(
            fileobj,
            chunk_size,
            full_file_size,
            callbacks=callbacks,
            enable_callbacks=False,
            close_callbacks=close_callbacks,
        )

    def open(self, filename, mode):
        return open(filename, mode)

    def remove_file(self, filename):
        """Remove a file, noop if file does not exist."""
        # Unlike os.remove, if the file does not exist,
        # then this method does nothing.
        try:
            os.remove(filename)
        except OSError:
            pass

    def rename_file(self, current_filename, new_filename):
        rename_file(current_filename, new_filename)

    def is_special_file(cls, filename):
        """Checks to see if a file is a special UNIX file.

        It checks if the file is a character special device, block special
        device, FIFO, or socket.

        :param filename: Name of the file

        :returns: True if the file is a special file. False, if is not.
        """
        # If it does not exist, it must be a new file so it cannot be
        # a special file.
        if not os.path.exists(filename):
            return False
        mode = os.stat(filename).st_mode