60 lines
1.6 KiB
Python
60 lines
1.6 KiB
Python
import cmd
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from threading import Thread, Event
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from turtle import bye
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from queue import Queue, Empty
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from equipment.turtle_device import TurtleDevice
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class TurtleDeviceThread(Thread):
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def __init__(self):
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super().__init__()
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self.device = TurtleDevice()
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self.queue = Queue()
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def run(self):
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while True:
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try:
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item = self.queue.get()
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except self.queue.Empty:
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continue
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else:
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if (item == 'exit'):
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break
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self.device.execute(*item)
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self.queue.task_done()
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class NoBlockingTurtleShell(cmd.Cmd):
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intro = 'Welcome to the turtle shell. Type help or ? to list commands.\n'
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prompt = '(turtle) '
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file = None
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def __init__(self, turtle_thread: TurtleDeviceThread):
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super(NoBlockingTurtleShell, self).__init__()
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self.turtle_thread = turtle_thread
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def do_execute(self, arg):
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self.turtle_thread.queue.put(parse(arg))
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def do_exit(self, arg):
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self.close()
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self.turtle_thread.queue.put("exit")
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print('Thank you for using Turtle')
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return True
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def close(self):
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if self.file:
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self.file.close()
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self.file = None
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def parse(arg):
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'Convert a series of zero or more numbers to an argument tuple'
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return tuple(arg.split())
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if __name__ == '__main__':
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turtle_thread = TurtleDeviceThread()
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turtle_thread.start()
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NoBlockingTurtleShell(turtle_thread).cmdloop() |