Limnoria/plugins/Currency.py

172 lines
6.4 KiB
Python

#!/usr/bin/env python
###
# Copyright (c) 2004, James Vega
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions, and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions, and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the author of this software nor the name of
# contributors to this software may be used to endorse or promote products
# derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###
"""
Provides commands which interface with various websites to perform currency
conversions.
"""
import supybot
__revision__ = "$Id$"
__author__ = supybot.authors.jamessan
import re
import supybot.conf as conf
import supybot.utils as utils
import supybot.ircutils as ircutils
import supybot.privmsgs as privmsgs
import supybot.registry as registry
import supybot.webutils as webutils
import supybot.callbacks as callbacks
class CurrencyCommand(registry.String):
def setValue(self, s):
m = Currency.currencyCommands
if s not in m:
raise registry.InvalidRegistryValue,\
'Command must be one of %s.' % utils.commaAndify(m)
else:
method = getattr(Currency, s)
Currency.convert.im_func.__doc__ = method.__doc__
registry.String.setValue(self, s)
class Currency(callbacks.Privmsg):
currencyCommands = ['xe', 'yahoo']
threaded = True
_symbolError = 'Currency must be denoted by its three-letter symbol.'
def convert(self, irc, msg, args):
# This specifically does not have a docstring.
channel = None
if ircutils.isChannel(msg.args[0]):
channel = msg.args[0]
realCommandName = self.registryValue('command', channel)
realCommand = getattr(self, realCommandName)
realCommand(irc, msg, args)
_xeCurrError = re.compile(r'The following error occurred:<BR><BR>\s+'
r'(.*)</body>', re.I | re.S)
_xeConvert = re.compile(r'<TD[^>]+><FONT[^>]+>\s+([\d.]+\s+\w{3}\s+='
r'\s+[\d.]+\s+\w{3})', re.I | re.S)
def xe(self, irc, msg, args):
"""[<number>] <currency1> to <currency2>
Converts from <currency1> to <currency2>. If number isn't given, it
defaults to 1.
"""
(number, curr1, curr2) = privmsgs.getArgs(args, required=2,
optional=1)
try:
number = float(number)
except ValueError:
curr2 = curr1
curr1 = number
number = 1
curr1 = curr1.lower()
curr2 = curr2.lower()
if curr2.startswith('to '):
curr2 = curr2[3:]
if len(curr1) != 3 and len(curr2) != 3:
irc.error(self._symbolError)
return
url = 'http://www.xe.com/ucc/convert.cgi?Amount=%s&From=%s&To=%s'
try:
text = webutils.getUrl(url % (number, curr1, curr2))
except webutils.WebError, e:
irc.error(str(e))
return
err = self._xeCurrError.search(text)
if err is not None:
irc.error('You used an incorrect currency symbol.')
return
conv = self._xeConvert.search(text)
if conv is not None:
resp = conv.group(1).split()
resp[0] = str(float(resp[0]) * number)
if resp[0].endswith('.0'):
resp[0] = '%s.00' % resp[0][:-2]
resp[3] = str(float(resp[3]) * number)
irc.reply(' '.join(resp))
return
else:
irc.error('XE must\'ve changed the format of their site.')
return
def yahoo(self, irc, msg, args):
"""[<number>] <currency1> to <currency2>
Converts from <currency1> to <currency2>. If number isn't given, it
defaults to 1.
"""
(number, curr1, curr2) = privmsgs.getArgs(args, required=2,
optional=1)
try:
number = float(number)
except ValueError:
curr2 = curr1
curr1 = number
number = 1
curr1 = curr1.upper()
curr2 = curr2.upper()
if curr2.startswith('TO '):
curr2 = curr2[3:]
if len(curr1) != 3 and len(curr2) != 3:
irc.error(self._symbolError)
return
url = r'http://finance.yahoo.com/d/quotes.csv?'\
r's=%s%s=X&f=sl1d1t1ba&e=.csv' % (curr1, curr2)
try:
text = webutils.getUrl(url)
except webutils.WebError, e:
irc.error(str(e))
return
if 'N/A' in text:
irc.error('You used an incorrect currency symbol.')
return
conv = text.split(',')[1]
conv = number * float(conv)
resp = [str(number), curr1.upper(), '=', str(conv), curr2.upper()]
if '.' not in resp[0] and 'e' not in resp[0]:
resp[0] = '%s.00' % resp[0]
irc.reply(' '.join(resp))
conf.registerPlugin('Currency')
conf.registerChannelValue(conf.supybot.plugins.Currency, 'command',
CurrencyCommand('yahoo', """Sets the default command to use when retrieving
the currency conversion. Command must be one of %s.""" %
utils.commaAndify(Currency.currencyCommands, And='or')))
Class = Currency
# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78: