dr.botzo/modules/Karma.py

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Python
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"""
Karma - handle karma (++ and --) tracking
Copyright (C) 2010 Brian S. Stephan
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
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import re
import shelve
from Module import Module
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__author__ = "Mike Bloy <mike@bloy.org>"
__date__ = "$Oct 23, 2010 11:12:33 AM$"
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class Karma(Module):
def __init__(self, config, server, modlist):
"""
Upon creation, determine the save file location
"""
Module.__init__(self, config, server, modlist)
filename = self.config.get(self.__class__.__name__, 'karmafile')
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self.karmafile = filename + "_karma.dat"
self.trendfile = filename + "_trends.dat"
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pattern = "([a-zA-Z0-9_]+)"
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karmapattern = '^' + pattern + '(\+\+|--)'
querypattern = '^!rank\s+' + pattern
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self.karmare = re.compile(karmapattern)
self.queryre = re.compile(querypattern)
def do(self, connection, event, nick, userhost, replypath, what, admin_unlocked):
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"""look for karma strings at the start of messages"""
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if (self.karmare.match(what)):
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self.handle_karma_change(connection, nick, userhost, replypath, what)
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elif (self.queryre.match(what)):
self.handle_karma_query(connection, nick, userhost, replypath, what)
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def handle_karma_change(self, connection, nick, userhost, replypath, what):
"""
handle the karma change and storage.
"""
match = self.karmare.match(what)
key = match.group(1)
value = match.group(2)
if (value == '++'):
value = 1;
else:
value = -1;
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# do karma recording
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karma = shelve.open(self.karmafile)
try:
oldvalue = 0;
if karma.has_key(key):
oldvalue = karma[key]
newvalue = oldvalue + value;
karma[key] = newvalue;
finally:
karma.close()
trend = shelve.open(self.trendfile)
try:
nickpos = nick + "_pos"
nickneg = nick + "_neg"
trend_pos = 0;
trend_neg = 0;
if trend.has_key(nickpos):
trend_pos = trend[nickpos]
if trend.has_key(nickneg):
trend_neg = trend[nickneg]
if value > 0:
trend_pos = trend_pos + 1
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else:
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trend_neg = trend_neg + 1
trend[nickpos] = trend_pos;
trend[nickneg] = trend_neg;
finally:
trend.close();
reply = "karma change for '" + key + "' (" + str(value) + ") by " + nick
self.reply(connection, replypath, reply)
def handle_karma_query(self, connection, nick, userhost, replypath, what):
match = self.queryre.match(what)
key = match.group(1)
karma = shelve.open(self.karmafile, "r")
reply = key + ' has no karma'
try:
if karma.has_key(key):
value = karma[key]
reply = key + ' has ' + str(value) + ' points of karma'
finally:
karma.close()
self.reply(connection, replypath, reply)
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if __name__ == "__main__":
print "Hello World"