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Limnoria/plugins/Factoids.py

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#!/usr/bin/env python
###
# Copyright (c) 2002, Jeremiah Fincher
# 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.
###
"""
Handles "factoids," little tidbits of information held in a database and
available on demand via several commands.
"""
import plugins
import time
import getopt
import string
import os.path
import sqlite
import conf
import utils
import ircdb
import ircutils
import privmsgs
import callbacks
example = utils.wrapLines("""
<jemfinch> @list Factoids
<supybot> jemfinch: factoidinfo, learn, lock, randomfactoid, forget, unlock, whatis
<jemfinch> @learn jemfinch as the primary author of supybot.
<supybot> jemfinch: The operation succeeded.
<jemfinch> @factoidinfo jemfinch
<supybot> jemfinch: Key 'jemfinch' is not locked and has 1 factoids associated with it: #0 was added by jemfinch at 03:57 AM, August 29, 2003
<jemfinch> @lock jemfinch
<supybot> jemfinch: The operation succeeded.
<jemfinch> @factoidinfo jemfinch
<supybot> jemfinch: Key 'jemfinch' is locked and has 1 factoids associated with it: #0 was added by jemfinch at 03:57 AM, August 29, 2003
<jemfinch> @learn jemfinch as a horrible assembly programmer
<supybot> jemfinch: Error: That factoid is locked.
<jemfinch> @unlock jemfinch
<supybot> jemfinch: The operation succeeded.
<jemfinch> @learn jemfinch as a horrible assembly programmer
<supybot> jemfinch: The operation succeeded.
<jemfinch> @whatis jemfinch
<supybot> jemfinch: jemfinch could be (#0) the primary author of supybot., or (#1) a horrible assembly programmer.
<jemfinch> @forget jemfinch
<supybot> jemfinch: Error: 2 factoids have that key. Please specify which one to remove.
<jemfinch> @forget jemfinch 1
<supybot> jemfinch: The operation succeeded.
<jemfinch> @whatis jemfinch
<supybot> jemfinch: jemfinch could be (#0) the primary author of supybot..
<jemfinch> @forget jemfinch 0
<supybot> jemfinch: The operation succeeded.
<jemfinch> @whatis jemfinch
G<supybot> jemfinch: Error: No factoid matches that key.
<jemfinch> @randomfactoid
<supybot> jemfinch: "sf.net-website": https://sourceforge.net/docman/display_doc.php?docid=4297&group_id=1; "private-attributes": http://groups.google.com/groups?q=jp+calderone+private+attributes&hl=en&lr=&ie=UTF-8&oe=UTF-8&selm=mailman.1050275130.5456.python-list%40python.org&rnum=1; "CFnews": http://inkedmn.homelinux.org/~inkedmn/vbcustom1.html; "CFnews": something else
<jemfinch> @whatis cfnews
<supybot> jemfinch: cfnews could be (#0) http://inkedmn.homelinux.org/~inkedmn/vbcustom1.html, or (#1) something else.
<jemfinch> @searchfactoids /^.f/i
<supybot> jemfinch: 'CFnews' and 'sf.net-website'
""")
class Factoids(plugins.ChannelDBHandler, callbacks.Privmsg):
def __init__(self):
plugins.ChannelDBHandler.__init__(self)
callbacks.Privmsg.__init__(self)
def makeDb(self, filename):
if os.path.exists(filename):
return sqlite.connect(filename)
db = sqlite.connect(filename)
cursor = db.cursor()
cursor.execute("""CREATE TABLE keys (
id INTEGER PRIMARY KEY,
key TEXT UNIQUE ON CONFLICT IGNORE,
locked BOOLEAN
)""")
cursor.execute("""CREATE TABLE factoids (
id INTEGER PRIMARY KEY,
key_id INTEGER,
added_by TEXT,
added_at TIMESTAMP,
fact TEXT
)""")
cursor.execute("""CREATE TRIGGER remove_factoids
BEFORE DELETE ON keys
BEGIN
DELETE FROM factoids WHERE key_id = old.id;
END
""")
db.commit()
return db
def learn(self, irc, msg, args):
"""[<channel>] <key> as <value>
Associates <key> with <value>. <channel> is only necessary if the
message isn't sent on the channel itself.
"""
channel = privmsgs.getChannel(msg, args)
try:
i = args.index('as')
except ValueError:
raise callbacks.ArgumentError
args.pop(i)
key = ' '.join(args[:i])
factoid = ' '.join(args[i:])
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("SELECT id, locked FROM keys WHERE key LIKE %s", key)
if cursor.rowcount == 0:
cursor.execute("""INSERT INTO keys VALUES (NULL, %s, 0)""", key)
db.commit()
cursor.execute("SELECT id, locked FROM keys WHERE key LIKE %s",key)
(id, locked) = map(int, cursor.fetchone())
capability = ircdb.makeChannelCapability(channel, 'factoids')
if not locked:
if not ircdb.checkCapability(msg.prefix, capability):
irc.error(msg, conf.replyNoCapability % capability)
return
if ircdb.users.hasUser(msg.prefix):
name = ircdb.users.getUser(msg.prefix).name
else:
name = msg.nick
cursor.execute("""INSERT INTO factoids VALUES
(NULL, %s, %s, %s, %s)""",
id, name, int(time.time()), factoid)
db.commit()
irc.reply(msg, conf.replySuccess)
else:
irc.error(msg, 'That factoid is locked.')
def whatis(self, irc, msg, args):
"""[<channel>] <key> [<number>]
Looks up the value of <key> in the factoid database. If given a
number, will return only that exact factoid. <channel> is only
necessary if the message isn't sent in the channel itself.
"""
channel = privmsgs.getChannel(msg, args)
if args[-1].isdigit():
number = args.pop()
else:
number = ''
key = privmsgs.getArgs(args)
if number:
try:
number = int(number)
except ValueError:
irc.error(msg, '%s is not a valid number.' % number)
return
else:
number = 0
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT factoids.fact FROM factoids, keys WHERE
keys.key LIKE %s AND factoids.key_id=keys.id
ORDER BY factoids.id
LIMIT 20""", key)
if cursor.rowcount == 0:
irc.error(msg, 'No factoid matches that key.')
else:
if not number:
factoids = []
counter = 1
for result in cursor.fetchall():
factoids.append('(#%s) %s' % (counter, result[0]))
counter += 1
irc.reply(msg,'%r could be %s' % (key, ', or '.join(factoids)))
else:
try:
irc.reply(msg, cursor.fetchall()[number-1][0])
except IndexError:
irc.error(msg, 'That\'s not a valid number for this key.')
return
def lock(self, irc, msg, args):
"""[<channel>] <key>
Locks the factoid(s) associated with <key> so that they cannot be
removed or added to. <channel> is only necessary if the message isn't
sent in the channel itself.
"""
channel = privmsgs.getChannel(msg, args)
key = privmsgs.getArgs(args)
db = self.getDb(channel)
capability = ircdb.makeChannelCapability(channel, 'factoids')
if ircdb.checkCapability(msg.prefix, capability):
cursor = db.cursor()
cursor.execute("UPDATE keys SET locked=1 WHERE key LIKE %s", key)
db.commit()
irc.reply(msg, conf.replySuccess)
else:
irc.error(msg, conf.replyNoCapability % capability)
def unlock(self, irc, msg, args):
"""[<channel>] <key>
Unlocks the factoid(s) associated with <key> so that they can be
removed or added to. <channel> is only necessary if the message isn't
sent in the channel itself.
"""
channel = privmsgs.getChannel(msg, args)
key = privmsgs.getArgs(args)
db = self.getDb(channel)
capability = ircdb.makeChannelCapability(channel, 'factoids')
if ircdb.checkCapability(msg.prefix, capability):
cursor = db.cursor()
cursor.execute("UPDATE keys SET locked=0 WHERE key LIKE %s",key)
db.commit()
irc.reply(msg, conf.replySuccess)
else:
irc.error(msg, conf.replyNoCapability % capability)
def forget(self, irc, msg, args):
"""[<channel>] <key> [<number>|*]
Removes the factoid <key> from the factoids database. If there are
more than one factoid with such a key, a number is necessary to
determine which one should be removed. A * can be used to remove all
factoids associated with a key. <channel> is only necessary if
the message isn't sent in the channel itself.
"""
channel = privmsgs.getChannel(msg, args)
if args[-1].isdigit():
number = int(args.pop())
number -= 1
if number < 0:
irc.error(msg, 'Negative numbers aren\'t valid.')
return
elif args[-1] == '*':
del args[-1]
number = True
else:
number = None
key = privmsgs.getArgs(args)
db = self.getDb(channel)
capability = ircdb.makeChannelCapability(channel, 'factoids')
if ircdb.checkCapability(msg.prefix, capability):
cursor = db.cursor()
cursor.execute("""SELECT keys.id, factoids.id
FROM keys, factoids
WHERE key LIKE %s AND
factoids.key_id=keys.id""", key)
if cursor.rowcount == 0:
irc.error(msg, 'There is no such factoid.')
elif cursor.rowcount == 1 or number is True:
(id, _) = cursor.fetchone()
cursor.execute("""DELETE FROM factoids WHERE key_id=%s""", id)
cursor.execute("""DELETE FROM keys WHERE key LIKE %s""", key)
db.commit()
irc.reply(msg, conf.replySuccess)
else:
if number is not None:
results = cursor.fetchall()
try:
(_, id) = results[number]
except IndexError:
irc.error(msg, 'Invalid factoid number.')
return
cursor.execute("DELETE FROM factoids WHERE id=%s", id)
db.commit()
irc.reply(msg, conf.replySuccess)
else:
irc.error(msg, '%s factoids have that key. ' \
'Please specify which one to remove, ' \
'or use * to designate all of them.' % \
cursor.rowcount)
else:
irc.error(msg, conf.replyNoCapability % capability)
def randomfactoid(self, irc, msg, args):
"""[<channel>]
Returns a random factoid from the database for <channel>. <channel>
is only necessary if the message isn't sent in the channel itself.
"""
channel = privmsgs.getChannel(msg, args)
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("""SELECT fact, key_id FROM factoids
ORDER BY random()
LIMIT 3""")
if cursor.rowcount != 0:
L = []
for (factoid, id) in cursor.fetchall():
cursor.execute("""SELECT key FROM keys WHERE id=%s""", id)
(key,) = cursor.fetchone()
L.append('"%s": %s' % (ircutils.bold(key), factoid))
irc.reply(msg, '; '.join(L))
else:
irc.error(msg, 'I couldn\'t find a factoid.')
def factoidinfo(self, irc, msg, args):
"""[<channel>] <key>
Gives information about the factoid(s) associated with <key>.
<channel> is only necessary if the message isn't sent in the channel
itself.
"""
channel = privmsgs.getChannel(msg, args)
key = privmsgs.getArgs(args)
db = self.getDb(channel)
cursor = db.cursor()
cursor.execute("SELECT id, locked FROM keys WHERE key LIKE %s", key)
if cursor.rowcount == 0:
irc.error(msg, 'No factoid matches that key.')
return
(id, locked) = map(int, cursor.fetchone())
cursor.execute("""SELECT added_by, added_at FROM factoids
WHERE key_id=%s
ORDER BY id""", id)
factoids = cursor.fetchall()
L = []
counter = 1
for (added_by, added_at) in factoids:
added_at = time.strftime(conf.humanTimestampFormat,
time.localtime(int(added_at)))
L.append('#%s was added by %s at %s' % (counter,added_by,added_at))
counter += 1
factoids = '; '.join(L)
s = 'Key %r is %s and has %s factoids associated with it: %s' % \
(key, locked and 'locked' or 'not locked', counter, factoids)
irc.reply(msg, s)
_sqlTrans = string.maketrans('*?', '%_')
def searchfactoids(self, irc, msg, args):
"""[<channel>] [--{regexp,exact}=<value>] [<glob>]
Searches the keyspace for keys matching <glob>. If --regexp is given,
it associated value is taken as a regexp and matched against the keys;
if --exact is given, its associated value is taken as an exact string
to match against the key.
"""
channel = privmsgs.getChannel(msg, args)
(optlist, rest) = getopt.getopt(args, '', ['regexp=', 'exact='])
if not optlist and not rest:
raise callbacks.ArgumentError
criteria = []
formats = []
predicateName = 'p'
db = self.getDb(channel)
for (option, arg) in optlist:
if option == '--exact':
### FIXME: no way to escape LIKE metacharacters in SQLite.
criteria.append('key LIKE %s')
formats.append('%' + arg + '%')
elif option == '--regexp':
criteria.append('%s(key)' % predicateName)
try:
r = utils.perlReToPythonRe(arg)
except ValueError, e:
irc.error(msg, 'Invalid regexp: %s' % e)
return
def p(s, r=r):
return int(bool(r.search(s)))
db.create_function(predicateName, 1, p)
predicateName += 'p'
for glob in rest:
criteria.append('key LIKE %s')
formats.append(glob.translate(self._sqlTrans))
cursor = db.cursor()
sql = """SELECT key FROM keys WHERE %s""" % ' AND '.join(criteria)
cursor.execute(sql, formats)
if cursor.rowcount == 0:
irc.reply(msg, 'No keys matched that query.')
elif cursor.rowcount > 100:
irc.reply(msg, 'More than 100 keys matched that query; '
'please narrow your query.')
else:
keys = [repr(t[0]) for t in cursor.fetchall()]
s = utils.commaAndify(keys)
irc.reply(msg, s)
Class = Factoids
# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78:
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