julyThird/completer.py

import readline


class SimpleCompleter:

    def __init__(self, options):
        self.options = sorted(options)

    def complete(self, text, state):
        response = None
        if state == 0:
            # 这是此文本的第一次，因此建立一个匹配列表。
            if text:
                self.matches = [
                    s
                    for s in self.options
                    if s and s.startswith(text)
                ]

            else:
                self.matches = self.options[:]


        # 如果有那么多，从匹配列表中返回状态项。
        try:
            response = self.matches[state]
        except IndexError:
            response = None

        return response


def input_loop():
    line = ''
    while line != 'stop':
        line = input('Prompt ("stop" to quit): ')
        print('Dispatch {}'.format(line))

def start_completer(command_list:list):
    # 注册完成功能
    OPTIONS = command_list
    readline.set_completer(SimpleCompleter(OPTIONS).complete)

    # 使用 Tab 键完成
    readline.parse_and_bind('tab: complete')