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from helpers import *
calc_users = open_json_file("calc", [])
math_operators = ["+", "-", "*", "/", "&", "|"]
ignore_operators = ["**", "&&", "||"] # ** may be too intensive, the others cause syntax errors
calc_perm = "utils.calc"
def calc(text):
"""
extracts a mathematical expression from `text`
returns (expression, result) or None
"""
expression = ""
should_calc = False
for char in text:
if char.isdigit() or (expression and char == ".") or (should_calc and char == " "):
expression += char
elif char in math_operators:
# calculation must include at least 1 operator
should_calc = True
expression += char
elif should_calc and char.isalpha():
# don't include any more text in the calculation
break
if should_calc and not any(op in expression for op in ignore_operators):
try:
result = str(eval(expression)) # pylint: disable = W0123
except: # pylint: disable = W0702
# we can run into all kinds of errors here
# most probably SyntaxError
return None
return (expression, result)
return None
@hook.event("player.AsyncPlayerChatEvent", "monitor")
def on_calc_chat(event):
sender = event.getPlayer()
message = event.getMessage()
if not event.isCancelled() and uid(sender) in calc_users and sender.hasPermission(calc_perm):
output = calc(message)
if output:
msg(sender, "&2=== Calc: &e" + output[0] + " &2= &c" + output[1])
@hook.command("calc", description="Toggles chat calculations")
def on_calc_command(sender, command, label, args):
plugin_header(sender, "Chat Calculator")
if not sender.hasPermission(calc_perm):
noperm(sender)
return True
if not checkargs(sender, args, 0, 1):
return True
if not is_player(sender):
msg(sender, "&cYou are not a player!" % sender)
return True
toggle(sender, calc_users, name = "Calc")
save_json_file("calc", calc_users)
return True
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