filepath.py 文件源码

def moveTo(self, destination, followLinks=True):
        """
        Move self to destination - basically renaming self to whatever
        destination is named.

        If destination is an already-existing directory,
        moves all children to destination if destination is empty.  If
        destination is a non-empty directory, or destination is a file, an
        OSError will be raised.

        If moving between filesystems, self needs to be copied, and everything
        that applies to copyTo applies to moveTo.

        @param destination: the destination (a FilePath) to which self
            should be copied
        @param followLinks: whether symlinks in self should be treated as links
            or as their targets (only applicable when moving between
            filesystems)
        """
        try:
            os.rename(self._getPathAsSameTypeAs(destination.path),
                      destination.path)
        except OSError as ose:
            if ose.errno == errno.EXDEV:
                # man 2 rename, ubuntu linux 5.10 "breezy":

                #   oldpath and newpath are not on the same mounted filesystem.
                #   (Linux permits a filesystem to be mounted at multiple
                #   points, but rename(2) does not work across different mount
                #   points, even if the same filesystem is mounted on both.)

                # that means it's time to copy trees of directories!
                secsib = destination.temporarySibling()
                self.copyTo(secsib, followLinks) # slow
                secsib.moveTo(destination, followLinks) # visible

                # done creating new stuff.  let's clean me up.
                mysecsib = self.temporarySibling()
                self.moveTo(mysecsib, followLinks) # visible
                mysecsib.remove() # slow
            else:
                raise
        else:
            self.changed()
            destination.changed()