1 files changed, 157 insertions, 0 deletions
diff --git a/ircbot.py b/ircbot.py
new file mode 100755
index 0000000..ac329eb
--- /dev/null
+++ b/ircbot.py
@@ -0,0 +1,157 @@
+#!/usr/bin/env python2
+
+import logging
+import sys
+import importlib
+
+from irc.client import SimpleIRCClient
+
+import numpy
+import theano
+from theano import tensor
+
+from blocks.model import Model
+
+import datastream
+from paramsaveload import SaveLoadParams
+from blocks.graph import ComputationGraph
+
+logging.basicConfig(level='INFO')
+logger = logging.getLogger(__name__)
+
+
+class IRCClient(SimpleIRCClient):
+    def __init__(self, model, sample_temperature, server, port, nick, channels, saveload):
+        super(IRCClient, self).__init__()
+
+        out = model.out[:, -1, :] / numpy.float32(sample_temperature)
+        prob = tensor.nnet.softmax(out)
+
+        cg = ComputationGraph([prob])
+        assert(len(cg.inputs) == 1)
+        assert(cg.inputs[0].name == 'bytes')
+
+        # channel functions & state
+        chfun = {}
+        for ch in channels + ['']:
+            logger.info("Building theano function for channel '%s'"%ch)
+            state_vars = [theano.shared(v[0:1, :].zeros_like().eval(), v.name+'-'+ch)
+                                    for v, _ in model.states]
+            givens = [(v, x) for (v, _), x in zip(model.states, state_vars)]
+            updates= [(x, upd) for x, (_, upd) in zip(state_vars, model.states)] 
+
+            pred = theano.function(inputs=cg.inputs, outputs=[prob],
+                                   givens=givens, updates=updates)
+            reset_states = theano.function(inputs=[], outputs=[],
+                                           updates=[(v, v.zeros_like()) for v in state_vars])
+            chfun[ch] = (pred, reset_states)
+
+        self.saveload = saveload
+
+        self.chfuns = chfun
+
+        self.chans = chans
+        self.nick = nick
+        self.server = None
+
+
+    def on_welcome(self, server, ev):
+        logger.info("Welcomed to " + repr(server))
+        for ch in self.chans:
+            if ch != '' and ch[0] == '#':
+                server.join(ch)
+
+    def on_join(self, server, ev):
+        self.server = server
+
+    def str2data(self, s):
+        return numpy.array([ord(x) for x in s], dtype='int16')[None, :]
+
+    def pred_until(self, pred_f, prob, delim='\n'):
+        s = ''
+        while True:
+            prob = prob / 1.00001
+            pred = numpy.random.multinomial(1, prob[0, :]).nonzero()[0][0].astype('int16')
+
+            s = s + chr(int(pred))
+
+            prob, = pred_f(pred[None, None])
+
+            if s[-1] == delim:
+                break
+        return s[:-1]
+
+    def privmsg(self, chan, msg):
+        if len(msg) > 500:
+            msg = 'blip bloup'
+        logger.info("%s >> %s" % (chan, msg))
+        self.server.privmsg(chan, msg.decode('utf-8', 'ignore'))
+
+    def on_pubmsg(self, server, ev):
+        chan = ev.target.encode('utf-8')
+        nick = ev.source.split('!')[0].encode('utf-8')
+        msg = ev.arguments[0].encode('utf-8')
+
+        logger.info("%s <%s> %s" % (chan, nick, msg))
+
+        s0 = nick+'\t'+msg
+
+        rep = None
+
+        if chan in self.chfuns:
+            pred_f, _ = self.chfuns[chan]
+            if s0[-2:] == '^I':
+                prob, = pred_f(self.str2data(s0[:-2]))
+                rep = s0[:-2] + self.pred_until(pred_f, prob)
+                rep = rep.split('\t', 1)[-1]
+            else:
+                # feed phrase to bot
+                prob, = pred_f(self.str2data(s0+'\n'))
+                if self.nick in msg:
+                    self.pred_until(pred_f, prob, '\t') 
+                    prob, = pred_f(self.str2data(nick+': '))
+                    rep = nick + ': ' + self.pred_until(pred_f, prob)
+        else:
+            logger.warn('Recieved message on unknown channel: %s'%chan)
+        
+        if rep != None:
+            self.privmsg(chan, rep)
+
+
+
+if __name__ == "__main__":
+    if len(sys.argv) < 2:
+        print >> sys.stderr, 'Usage: %s [options] config' % sys.argv[0]
+        sys.exit(1)
+    model_name = sys.argv[-1]
+    config = importlib.import_module('.%s' % model_name, 'config')
+
+    # Build model
+    logger.info('Building model...')
+    m = config.Model(config)
+
+    # Define the computation graph && load parameters
+    logger.info('Building computation graph...')
+    dump_path = 'params/%s-use_on_irc.pkl' % model_name
+    saveload = SaveLoadParams(path=dump_path,
+                              model=Model(m.sgd_cost))
+    saveload.do_load()
+
+    # Build IRC client
+    server = 'clipper.ens.fr'
+    port = 6667
+    nick = 'frigo'
+    chans = ['#frigotest', '#courssysteme']
+
+    irc = IRCClient(model=m,
+                    sample_temperature=config.sample_temperature,
+                    server=server,
+                    port=port,
+                    nick=nick,
+                    channels=chans,
+                    saveload=saveload)
+    irc.connect(server, port, nick)
+    irc.reactor.process_forever()
+
+
+#  vim: set sts=4 ts=4 sw=4 tw=0 et :