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from helpers import *
import threading
import time
calc_users = open_json_file("calc", [])
math_operators = ["+", "-", "*", "/", "%", ">", "<", "^", "&", "|"]
allowed_strings = ["0b", "0x", "(", ")", "hex(", "bin(", "abs(", "int(", "min(", "max(", "round(", "float("]
allowed_alpha = ["a", "b", "c", "d", "e", "f"]
calc_perm = "utils.calc"
calc_perm_power = "utils.calc.power"
def calc(sender, text):
try:
return do_calc(sender, text.lower())
except:
return None
def do_calc(sender, text):
"""
extracts a mathematical expression from `text`
returns (expression, result) or None
"""
expression = ""
should_calc = False
i = 0
while True:
if i >= len(text):
break
char = text[i]
if i < len(text) - 5 and str(char + text[i+1] + text[i+2] + text[i+3] + text[i+4] + text[i+5]) in allowed_strings:
expression += char
expression += text[i + 1]
expression += text[i + 2]
expression += text[i + 3]
expression += text[i + 4]
expression += text[i + 5]
i += 5
should_calc = True
elif i < len(text) - 3 and str(char + text[i+1] + text[i+2] + text[i+3]) in allowed_strings:
expression += char
expression += text[i + 1]
expression += text[i + 2]
expression += text[i + 3]
i += 3
should_calc = True
elif i < len(text) - 1 and str(char + text[i + 1]) in allowed_strings:
expression += char
expression += text[i + 1]
i += 1
should_calc = True
elif char.isdigit() or char in allowed_alpha or (expression and char == ".") or (should_calc and char == " ") or (should_calc and char == ","):
expression += char
should_calc = True
elif char in math_operators or char in ["(", ")"]:
# 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
i += 1
last_char = ' '
for char in expression:
if last_char == '*' and char == '*':
if sender.hasPermission(calc_perm_power):
break
else:
return None
last_char = char
if should_calc:
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
def thread_calc(message, sender):
output = calc(sender, message)
if output and sender.isOnline():
msg(sender, "&2=== Calc: &e" + output[0] + " &2= &c" + output[1])
@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):
thread = threading.Thread(target=thread_calc, args=(message, sender))
thread.daemon = True
thread.start()
@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!")
return True
toggle(sender, calc_users, name = "Calc")
save_json_file("calc", calc_users)
return True
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