def write_scrolling(self, text, attr=None):
        x, y = self.pos()
        w, h = self.size()
        scroll = 0 # the result

        # split the string into ordinary characters and funny characters
        chunks = self.motion_char_re.split(text)
        for chunk in chunks:
            n = self.write_color(chunk, attr)
            if len(chunk) == 1: # the funny characters will be alone
                if chunk[0] == '\n': # newline
                    x = 0
                    y += 1
                elif chunk[0] == '\r': # carriage return
                    x = 0
                elif chunk[0] == '\t': # tab
                    x = 8 * (int(x / 8) + 1)
                    if x > w: # newline
                        x -= w
                        y += 1
                elif chunk[0] == '\007': # bell
                    pass
                elif chunk[0] == '\010':
                    x -= 1
                    if x < 0:
                        y -= 1 # backed up 1 line
                else: # ordinary character
                    x += 1
                if x == w: # wrap
                    x = 0
                    y += 1
                if y == h: # scroll
                    scroll += 1
                    y = h - 1
            else: # chunk of ordinary characters
                x += n
                l = int(x / w) # lines we advanced
                x = x % w # new x value
                y += l
                if y >= h: # scroll
                    scroll += y - h + 1
                    y = h - 1
        return scroll
write text at current cursor position while watching for scrolling.
dataset/ETHPy150Open Ali-Razmjoo/OWASP-ZSC/module/readline_windows/pyreadline/console/ironpython_console.py/Console.write_scrolling