mirror of https://github.com/Mikaela/Limnoria.git
New Markov implementation. It's still broken, but I gotta run, so I'll fix it later.
This commit is contained in:
Jeremy Fincher
parent
f44f5410f3
commit
d81ca6fa08
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@ -40,82 +40,159 @@ __revision__ = "$Id$"
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import supybot.plugins as plugins
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import Queue
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import anydbm
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import random
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import os.path
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import threading
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import supybot.ircmsgs as ircmsgs
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import supybot.ircutils as ircutils
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import supybot.privmsgs as privmsgs
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import supybot.callbacks as callbacks
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try:
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import sqlite
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except ImportError:
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raise callbacks.Error, 'You need to have PySQLite installed to use this ' \
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'plugin. Download it at <http://pysqlite.sf.net/>'
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class MarkovDBInterface(object):
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def close(self):
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pass
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def addPair(self, channel, first, second, follower,
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isFirst=False, isLast=False):
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pass
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class Markov(plugins.ChannelDBHandler, callbacks.Privmsg):
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threaded = True
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def getFirstPair(self, channel):
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pass
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def getPair(self, channel, first, second):
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# Returns (follower, last) tuple.
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pass
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class SqliteMarkovDB(object):
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def addPair(self, channel, first, second, follower,
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isFirst=False, isLast=False):
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pass
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def getFirstPair(self, channel):
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pass
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def getFollower(self, channel, first, second):
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# Returns (follower, last) tuple.
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pass
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class DbmMarkovDB(object):
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def __init__(self):
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plugins.ChannelDBHandler.__init__(self)
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callbacks.Privmsg.__init__(self)
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self.dbs = ircutils.IrcDict()
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def close(self):
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for db in self.dbs.values():
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db.close()
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def makeDb(self, filename):
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if os.path.exists(filename):
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return sqlite.connect(filename)
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db = sqlite.connect(filename)
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cursor = db.cursor()
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cursor.execute("""CREATE TABLE pairs (
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id INTEGER PRIMARY KEY,
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first TEXT,
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second TEXT,
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is_first BOOLEAN,
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UNIQUE (first, second) ON CONFLICT IGNORE
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)""")
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cursor.execute("""CREATE TABLE follows (
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id INTEGER PRIMARY KEY,
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pair_id INTEGER,
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word TEXT
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)""")
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cursor.execute("""CREATE INDEX follows_pair_id ON follows (pair_id)""")
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db.commit()
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return db
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def _getDb(self, channel):
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if channel not in self.dbs:
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# Stupid anydbm seems to append .db to the end of this.
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self.dbs[channel] = anydbm.open('%s-DbmMarkovDB' % channel, 'c')
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self.dbs[channel]['lasts'] = ''
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self.dbs[channel]['firsts'] = ''
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return self.dbs[channel]
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def _addFirst(self, db, combined):
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db['firsts'] = db['firsts'] + (combined + '\n')
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def _addLast(self, db, second, follower):
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combined = self._combine(second, follower)
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db['lasts'] = db['lasts'] + (combined + '\n')
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def addPair(self, channel, first, second, follower,
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isFirst=False, isLast=False):
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db = self._getDb(channel)
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combined = self._combine(first, second)
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if isFirst:
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self._addFirst(db, combined)
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elif isLast:
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self._addLast(db, second, follower)
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else:
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if db.has_key(combined): # EW!
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db[combined] = db[combined] + (' ' + follower)
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else:
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db[combined] = follower
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#db.flush()
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def getFirstPair(self, channel):
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db = self._getDb(channel)
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firsts = db['firsts'].splitlines()
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if firsts:
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firsts.pop() # Empty line.
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if firsts:
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return random.choice(firsts).split()
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else:
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raise KeyError, 'No firsts for %s.' % channel
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else:
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raise KeyError, 'No firsts for %s.' % channel
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def _combine(self, first, second):
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return '%s %s' % (first, second)
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def getFollower(self, channel, first, second):
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db = self._getDb(channel)
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followers = db[self._combine(first, second)]
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follower = random.choice(followers.split())
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if self._combine(second, follower) in db['lasts']:
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last = True
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else:
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last = False
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return (follower, last)
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def MarkovDB():
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return DbmMarkovDB()
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class MarkovWorkQueue(threading.Thread):
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def __init__(self, *args, **kwargs):
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threading.Thread.__init__(self)
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self.db = MarkovDB(*args, **kwargs)
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self.q = Queue.Queue()
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self.killed = False
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self.start()
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def die(self):
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self.killed = True
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def enqueue(self, f):
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self.q.put(f)
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def run(self):
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while not self.killed:
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f = self.q.get()
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f(self.db)
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self.db.close()
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class Markov(callbacks.Privmsg):
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def __init__(self):
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self.q = MarkovWorkQueue()
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callbacks.Privmsg.__init__(self)
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def die(self):
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self.q.die()
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def tokenize(self, s):
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# XXX: Should this be smarter?
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return s.split()
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def doPrivmsg(self, irc, msg):
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if not ircutils.isChannel(msg.args[0]):
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return
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channel = msg.args[0]
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db = self.getDb(channel)
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cursor = db.cursor()
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if ircmsgs.isAction(msg):
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words = ircmsgs.unAction(msg).split()
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else:
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words = msg.args[1].split()
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isFirst = True
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for (first, second, follower) in window(words, 3):
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if isFirst:
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cursor.execute("""INSERT OR REPLACE
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INTO pairs VALUES (NULL, %s, %s, 1)""",
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first, second)
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isFirst = False
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else:
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cursor.execute("INSERT INTO pairs VALUES (NULL, %s, %s, 0)",
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first, second)
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cursor.execute("""SELECT id FROM pairs
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WHERE first=%s AND second=%s""", first, second)
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id = int(cursor.fetchone()[0])
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cursor.execute("""INSERT INTO follows VALUES (NULL, %s, %s)""",
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id, follower)
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if not isFirst: # i.e., if the loop iterated at all.
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cursor.execute("""INSERT INTO pairs VALUES (NULL, %s, %s, 0)""",
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second, follower)
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cursor.execute("""SELECT id FROM pairs
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WHERE first=%s AND second=%s""", second,follower)
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id = int(cursor.fetchone()[0])
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cursor.execute("INSERT INTO follows VALUES (NULL, %s, NULL)", id)
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db.commit()
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_maxMarkovLength = 80
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_minMarkovLength = 7
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if ircutils.isChannel(channel):
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words = self.tokenize(msg.args[1])
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if len(words) >= 3:
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def doPrivmsg(db):
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db.addPair(channel, words[0], words[1], words[2],
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isFirst=True)
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db.addPair(channel, words[-3], words[-2], words[-1],
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isLast=True)
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del words[0] # Remove first.
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del words[-1] # Remove last.
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for (first, second, follower) in window(words, 3):
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db.addPair(channel, first, second, follower)
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self.q.enqueue(doPrivmsg)
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def markov(self, irc, msg, args):
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"""[<channel>]
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@ -123,99 +200,19 @@ class Markov(plugins.ChannelDBHandler, callbacks.Privmsg):
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data kept on <channel> (which is only necessary if not sent in the
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channel itself).
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"""
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argsCopy = args[:]
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channel = privmsgs.getChannel(msg, args)
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db = self.getDb(channel)
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cursor = db.cursor()
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words = []
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cursor.execute("""SELECT id, first, second FROM pairs
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WHERE is_first=1
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ORDER BY random()
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LIMIT 1""")
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if cursor.rowcount == 0:
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irc.error('I have no records for that channel.')
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return
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(id, first, second) = cursor.fetchone()
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id = int(id)
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words.append(first)
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words.append(second)
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sql = """SELECT follows.word FROM pairs, follows
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WHERE pairs.first=%s AND
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pairs.second=%s AND
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pairs.id=follows.pair_id
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ORDER BY random()
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LIMIT 1"""
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while len(words) < self._maxMarkovLength:
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cursor.execute(sql, words[-2], words[-1])
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results = cursor.fetchone()
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if not results:
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break
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word = results[0]
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if word is None:
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break
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words.append(word)
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if len(words) < self._minMarkovLength:
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self.markov(irc, msg, argsCopy)
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else:
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def markov(db):
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try:
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words = list(db.getFirstPair(channel))
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except KeyError:
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irc.error('I don\'t have any first pairs for %s.' % channel)
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return
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last = False
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while not last:
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(follower,last) = db.getFollower(channel, words[-2], words[-1])
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words.append(follower)
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irc.reply(' '.join(words))
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def pairs(self, irc, msg, args):
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"""[<channel>]
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Returns the number of Markov's chain links in the database for
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<channel>.
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"""
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channel = privmsgs.getChannel(msg, args)
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db = self.getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT COUNT(*) FROM pairs""")
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n = int(cursor.fetchone()[0])
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s = 'There are %s pairs in my Markov database for %s' % (n, channel)
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irc.reply(s)
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def firsts(self, irc, msg, args):
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"""[<channel>]
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Returns the number of Markov's first links in the database for
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<channel>.
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"""
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channel = privmsgs.getChannel(msg, args)
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db = self.getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT COUNT(*) FROM pairs WHERE is_first=1""")
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n = int(cursor.fetchone()[0])
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s = 'There are %s first pairs in my Markov database for %s'%(n,channel)
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irc.reply(s)
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def follows(self, irc, msg, args):
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"""[<channel>]
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Returns the number of Markov's third links in the database for
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<channel>.
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"""
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channel = privmsgs.getChannel(msg, args)
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db = self.getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT COUNT(*) FROM follows""")
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n = int(cursor.fetchone()[0])
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s = 'There are %s follows in my Markov database for %s' % (n, channel)
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irc.reply(s)
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def lasts(self, irc, msg, args):
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"""[<channel>]
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Returns the number of Markov's last links in the database for
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<channel>.
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"""
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channel = privmsgs.getChannel(msg, args)
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db = self.getDb(channel)
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cursor = db.cursor()
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cursor.execute("""SELECT COUNT(*) FROM follows WHERE word ISNULL""")
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n = int(cursor.fetchone()[0])
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s = 'There are %s lasts in my Markov database for %s' % (n, channel)
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irc.reply(s)
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self.q.enqueue(markov)
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Class = Markov
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# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78:
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