73 lines
2.3 KiB
Python
73 lines
2.3 KiB
Python
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import re
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import string
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from random import choices
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import miney
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class Lua:
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"""
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Lua specific functions.
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"""
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def __init__(self, mt: miney.Minetest):
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self.mt = mt
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def run(self, lua_code: str, timeout: float = 10.0):
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"""
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Run load code on the minetest server.
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:param lua_code: Lua code to run
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:param timeout: How long to wait for a result
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:return: The return value. Multiple values as a list.
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"""
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# generates nearly unique id's (under 1000 collisions in 10 million values)
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result_id = ''.join(choices(string.ascii_lowercase + string.ascii_uppercase + string.digits, k=6))
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self.mt.send({"lua": lua_code, "id": result_id})
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try:
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return self.mt.receive(result_id, timeout=timeout)
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except miney.SessionReconnected:
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# We rerun the code, cause he was dropped during reconnect
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return self.run(lua_code, timeout=timeout)
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def run_file(self, filename):
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"""
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Loads and runs Lua code from a file. This is useful for debugging, cause Minetest can throws errors with
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correct line numbers. It's also easier usable with a Lua capable IDE.
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:param filename:
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:return:
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"""
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with open(filename, "r") as f:
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return self.run(f.read())
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def dumps(self, data) -> str:
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"""
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Convert python data type to a string with lua data type.
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:param data: Python data
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:return: Lua data
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"""
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# credits:
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# https://stackoverflow.com/questions/54392760/serialize-a-dict-as-lua-table/54392761#54392761
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if type(data) is str:
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return '"{}"'.format(re.escape(data))
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if type(data) in (int, float):
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return '{}'.format(data)
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if type(data) is bool:
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return data and "true" or "false"
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if type(data) is list:
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l = "{"
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l += ", ".join([self.dumps(item) for item in data])
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l += "}"
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return l
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if type(data) is dict:
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t = "{"
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t += ", ".join(
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[
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'[\"{}\"]={}'.format(re.escape(k), self.dumps(v)) for k, v in data.items()
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]
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)
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t += "}"
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return t
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raise ValueError("Unknown type {}".format(type(data)))
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