dr.botzo, the IRC bot with Django integration.
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"""
Facts - display facts, from within a category, from the database
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/>.
"""
import random
import re
import MySQLdb as mdb
from Module import Module
class Facts(Module):
"""Select a fact from the database.
Facts are categorized by a name, which may allow for random selection and so on.
"""
def __init__(self, irc, config):
"""Set up XML-RPC methods."""
Module.__init__(self, irc, config)
irc.xmlrpc_register_function(self._get_fact, "facts_get")
def db_init(self):
"""Initialize database tables."""
# init the database if module isn't registered
version = self.db_module_registered(self.__class__.__name__)
if version == None:
db = self.get_db()
try:
version = 1
cur = db.cursor(mdb.cursors.DictCursor)
cur.execute('''
CREATE TABLE facts_facts (
id SERIAL,
category VARCHAR(64) NOT NULL,
fact LONGTEXT NOT NULL,
who VARCHAR(64) NOT NULL,
userhost VARCHAR(256) NOT NULL,
time TIMESTAMP DEFAULT CURRENT_TIMESTAMP
) ENGINE=InnoDB CHARACTER SET utf8 COLLATE utf8_bin
''')
db.commit()
self.db_register_module_version(self.__class__.__name__, version)
except mdb.Error as e:
db.rollback()
self.log.error("database error trying to create tables")
self.log.exception(e)
raise
finally: cur.close()
def do(self, connection, event, nick, userhost, what, admin_unlocked):
"""Add or retrieve a fact from the database."""
db = self.get_db()
try:
cur = db.cursor(mdb.cursors.DictCursor)
match = re.search('^!facts\s+add\s+(\S+)\s+(.*)$', what)
if match:
category = match.group(1)
fact = match.group(2)
cur.execute('''INSERT INTO facts_facts (category, fact, who, userhost)
VALUES (%s, %s, %s, %s)''', (category, fact, nick, userhost))
db.commit()
return self.irc.reply(event, category + ' added.')
match = re.search('^!facts\s+(\S+)\s+(.*)$', what)
if match:
category = match.group(1)
regex = match.group(2)
return self.irc.reply(event, self._get_fact(category, regex))
match = re.search('^!facts\s+(\S+)$', what)
if match:
category = match.group(1)
return self.irc.reply(event, self._get_fact(category))
except mdb.Error as e:
db.rollback()
self.log.error("database error during add/retrieve")
self.log.exception(e)
return self.irc.reply(event, "database error during add/retrieve fact")
finally: cur.close()
def _get_fact(self, category, search=""):
"""
Get a fact in the given category from the database.
Keyword arguments:
category - the fact category to query
search - the optional regex to match against within that category
"""
db = self.get_db()
try:
cur = db.cursor(mdb.cursors.DictCursor)
if search == "":
cur.execute("SELECT * FROM facts_facts WHERE category = %s",
(category,))
facts = cur.fetchall()
else:
cur.execute("SELECT * FROM facts_facts WHERE category = %s AND fact REGEXP %s",
(category, search))
facts = cur.fetchall()
if len(facts) > 0:
fact = facts[random.randint(1,len(facts))-1]
return fact['fact'].rstrip()
except mdb.Error as e:
self.log.error("database error in _get_fact")
self.log.exception(e)
raise
finally: cur.close()
# vi:tabstop=4:expandtab:autoindent
# kate: indent-mode python;indent-width 4;replace-tabs on;