Method write

tables/nodes/filenode.py:321–353

Write the given buffer to the IO stream. Returns the number of bytes written, which may be less than len(b).

(self, b)

    # def write(self, b: bytes) -> int:
    def write(self, b):
        """Write the given buffer to the IO stream.

        Returns the number of bytes written, which may be less than
        len(b).

        """
        self._check_closed()
        self._checkWritable()

        if isinstance(b, str):
            raise TypeError("can't write str to binary stream")

        n = len(b)
        if n == 0:
            return 0

        pos = self._pos

        # Is the pointer beyond the real end of data?
        end2off = pos - self._node.nrows
        if end2off > 0:
            # Zero-fill the gap between the end of data and the pointer.
            self._append_zeros(end2off)

        # Append data.
        self._node.append(
            np.ndarray(buffer=b, dtype=self._vtype, shape=self._vshape(n))
        )

        self._pos += n

        return n

    def _check_closed(self):
        """Check if file node is open.