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Modified base command to allow conversion between non-decimal bases

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This commit is contained in:
Keith Jones 2004-02-07 20:41:07 +00:00
parent 6a2f9010b8
commit 4d296473e5
1 changed files with 38 additions and 8 deletions
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46
plugins/Math.py
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@ -64,23 +64,53 @@ class Math(callbacks.Privmsg):
# one can do list comprehensions or call __...__ functions.
###
def base(self, irc, msg, args):
"""<base> <number>
"""<fromBase> [<toBase>] <number>
Converts from base <base> the number <number>
Converts from base <fromBase> to base <toBase>. If <toBase> is left
out, it converts to decimal.
"""
(base, number) = privmsgs.getArgs(args, required=2)
(frm, to, number) = privmsgs.getArgs(args, required=2, optional=1)
if number == '':
number = to
to = '10'
try:
base = int(base)
if not (2 <= base <= 36):
frm = int(frm)
to = int(to)
if not ((2 <= frm <= 36) and (2 <= to <= 36)):
raise ValueError
except ValueError:
irc.error('<base> must be a number between 2 and 36.')
irc.error('Bases must be numbers between 2 and 36.')
return
try:
irc.reply(str(long(number, int(base))))
irc.reply(self._convertBaseToBase(number, to, frm))
except ValueError:
irc.error('Invalid <number> for base %s: %s' % (base, number))
irc.error('Invalid <number> for base %s: %s' % (frm, number))
def _convertDecimalToBase(self, number, base):
"""
Convert a decimal number to another base; returns a string.
"""
valStr = ''
if number == 0:
return '0'
while number != 0:
digit = number % base
if digit >= 10:
digit = string.uppercase[digit - 10]
else:
digit = str(digit)
valStr = digit + valStr
number = int(math.floor(number / base))
return valStr
def _convertBaseToBase(self, number, toBase, fromBase):
"""
Convert a number from any base, 2 through 36, to any other
base, 2 through 36. Returns a string.
"""
number = long(str(number), fromBase)
return self._convertDecimalToBase(number, toBase)
_mathEnv = {'__builtins__': types.ModuleType('__builtins__'), 'i': 1j}
_mathEnv.update(math.__dict__)
_mathEnv.update(cmath.__dict__)