terminal.py 文件源码

def insert_line(self, n=1):
        """
        Inserts *n* lines at the current cursor position.
        """
        #logging.debug("insert_line(%s)" % n)
        if not n: # Takes care of an empty string
            n = 1
        n = int(n)
        for i in xrange(n):
            self.screen.pop(self.bottom_margin) # Remove the bottom line
            # Remove bottom line's style information as well:
            self.renditions.pop(self.bottom_margin)
            empty_line = array('u', u' ' * self.cols) # Line full of spaces
            self.screen.insert(self.cursorY, empty_line) # Insert at cursor
            # Insert a new empty rendition as well:
            empty_rend = array('u', unichr(1000) * self.cols)
            self.renditions.insert(self.cursorY, empty_rend) # Insert at cursor