81 lines
4.5 KiB
Python
81 lines
4.5 KiB
Python
import asyncio
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import os
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import subprocess
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import sys
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from core.builtins import Bot
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from core.component import on_command
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from core.exceptions import NoReportException
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from core.logger import Logger
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c = on_command('calc', developers=[
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'Dianliang233'], desc='安全地计算 Python ast 表达式。')
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@c.handle('<math_expression>', options_desc={'+': '和/正数：1 + 2 -> 3',
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'-': '差/负数：3 - 1 -> 2',
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'/': '商：6 / 3 -> 2',
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'*': '积：2 * 3 -> 6',
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'**': 'x 的 y 次幂（由于性能问题，指数不得超过 4e+6）：2 ** 3 -> 8',
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'%': '取模：5 % 2 -> 1',
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'==': '等于：1 == 1 -> True',
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'<=': '小于等于：1 <= 2 -> True',
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'>=': '大于等于：1 >= 2 -> False',
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'>>': 'x 右移 y 位（相当于 x / (2 ** y)，y < 10000）：32 >> 5 -> 1',
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'<<': 'x 左移 y 位（相当于 x * (2 ** y)，y < 10000）：1 << 5 -> 32',
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'^': '按位异或：1 ^ 1 -> 0',
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'not': '非：not True -> False',
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'is': 'x 与 y 是同一个对象：1 is 1 -> True',
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'randint(x)': '小于 x 的随机整数：randint(6) -> 5',
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'rand()': '0 与 1 之间的随机浮点数：rand() -> 0.5789015836448923',
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'int()': '转换为整数：int(1.5) -> 1',
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'float()': '转换为浮点数：float(1) -> 1.0',
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'str()': '转换为字符串：str(1) -> "1"',
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'complex()': '转换为复数：complex(1) -> (1 + 0j)',
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'bool()': '转换为布尔值：bool(1) -> True',
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'bin()': '转换为二进制：bin(268) -> 0b100001100',
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'oct()': '转换为八进制：oct(268) -> 0o414',
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'hex()': '转换为十六进制：hex(268) -> 0x10c',
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'更多可用运算符和函数': 'https://bot.teahouse.team/-/340',
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})
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async def _(msg: Bot.MessageSession):
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expr = msg.asDisplay().split(' ', 1)[1]
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if sys.platform == 'win32' and sys.version_info.minor < 10:
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try:
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res = subprocess.check_output(
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['python', os.path.abspath("./modules/calc/calc.py"), expr], timeout=10, shell=False).decode('utf-8')
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if res[0:6] == 'Result':
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await msg.finish(f'{(expr)} = {res[7:]}')
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else:
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await msg.finish(f'表达式无效：{res[7:]}')
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except subprocess.TimeoutExpired:
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raise NoReportException('计算超时。')
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else:
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try:
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p = await asyncio.create_subprocess_exec('python', os.path.abspath("./modules/calc/calc.py"), expr,
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stdout=asyncio.subprocess.PIPE,
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stderr=asyncio.subprocess.PIPE
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)
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try:
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await asyncio.wait_for(p.wait(), timeout=10)
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except asyncio.TimeoutError:
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p.kill()
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raise NoReportException('计算超时。')
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stdout_data, stderr_data = await p.communicate()
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if p.returncode == 0:
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res = stdout_data.decode('utf-8')
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if res[0:6] == 'Result':
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await msg.finish(f'{(expr)} = {res[7:]}')
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else:
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await msg.finish(f'表达式无效：{res[7:]}')
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else:
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Logger.error(f'calc.py exited with code {p.returncode}')
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try:
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Logger.error(
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f'calc.py stderr: {stderr_data.decode("utf-8")}')
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except UnicodeDecodeError:
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Logger.error(
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f'calc.py stderr: {stderr_data.decode("gbk")}')
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except Exception as e:
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raise NoReportException(e)
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