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###
# 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: Currency.py,v 1.13 2004/12/16 07:57:06 jemfinch Exp $"
__author__ = supybot.authors.jamessan
import re
import supybot.conf as conf
import supybot.utils as utils
from supybot.commands import *
import supybot.ircutils as ircutils
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 irc.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, curr1, curr2):
"""[<number>] <currency1> [to] <currency2>
Converts from <currency1> to <currency2>. If number isn't given, it
defaults to 1.
"""
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
xe = wrap(xe, [optional('float', 1.0), 'lowered', 'to', 'lowered'])
def yahoo(self, irc, msg, args, number, curr1, curr2):
"""[<number>] <currency1> to <currency2>
Converts from <currency1> to <currency2>. If number isn't given, it
defaults to 1.
"""
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)
irc.reply('%.2f %s = %.2f %s' % (number, curr1, conv, curr2))
yahoo = wrap(yahoo, [optional('float', 1.0), 'lowered', 'to', 'lowered'])
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:
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