Added a mini-wizard for people who run without a registry file.

scripts/supybot

@@ -39,6 +39,7 @@ import re
 import os
 import sys
 import atexit
+import os.path
 
 if sys.version_info < (2, 3, 0):
     sys.stderr.write('This program requires Python >= 2.3.0\n')
@@ -55,7 +56,7 @@ import optparse
 started = time.time()
 
 import supybot
-import registry # Must be imported before conf or log.
+import registry
 
 def main():
     import conf
@@ -116,12 +117,109 @@ if __name__ == '__main__':
     if len(args) > 1:
         parser.error()
     elif not args:
-        print 'No registry file given; starting with a clean slate.'
-        print 'Output registry will be written to registry.conf.'
-        registryFilename = 'registry.conf'
+        import socket
+        import ircutils
+        import questions
+        questions.output("""It seems like you're running supybot for the first
+        time.  Or, perhaps, you just forgot to give this program an argument
+        for your registry file.  If the latter is the case, simply press Ctrl-C
+        and this script will exit and you can run it again as indicated.  If
+        the former is the case, however, we'll have a few questions for you
+        to write your initial registry file.""")
+        ###
+        # Nick.
+        ###
+        nick = questions.something("""What nick would you like your bot to
+        use?""")
+        while not ircutils.isNick(nick):
+            questions.output("""That's not a valid IRC nick.  Please choose a
+            different nick.""")
+            nick = questions.something("""What nick would you like your bot
+            to use?""")
+
+        ###
+        # Server.
+        ###
+        def checkServer(server):
+            try:
+                ip = socket.gethostbyname(server)
+                questions.output("""%s resolved to %s.""" % (server, ip))
+                return True
+            except socket.error:
+                questions.output("""That's not a valid hostname.  Please enter
+                a hostname that resolves.""")
+                return False
+        server = questions.something("""What server would you like your bot
+        to connect to?""")
+        while not checkServer(server):
+            server = questions.something("""What server would you like your bot
+            to connect to?""")
+
+        ###
+        # Channels.
+        ###
+        def checkChannels(s):
+            for channel in s.split():
+                if ',' in channel:
+                    (channel, _) = channel.split(',', 1)
+                if not ircutils.isChannel(channel):
+                    questions.output("""%s is not a valid IRC channel.  Please
+                    choose a different channel.""" % channel)
+                    return False
+            return True
+        channels = questions.something("""What channels would you like your bot
+        to join when it connects to %s?  Separate your channels by spaces; if
+        any channels require a keyword to join, separate the keyword from the
+        channel by a comma.  For instance, if you want to join #supybot with
+        no keyword and #secret with a keyword of 'foo', you would type
+        '#supybot #secret,foo' without the quotes.""" % server)
+        while not checkChannels(channels):
+            channels = questions.something("""What channels would you like your
+            bot to join when it connects to %s?  Separate your channels by
+            spaces; if any channels require a keyword to join, separate the
+            keyword from the channel by a comma.  For instance, if you want to
+            join #supybot with no keyword and #secret with a keyword of 'foo',
+            you would type '#supybot #secret,foo' without the quotes.
+            """ % server)
+
+        ###
+        # Filename.
+        ###
+        def checkFilename(s):
+            if os.path.exists(s):
+                questions.output("""That file already exists.  Please choose a
+                file that doesn't exist yet.  You can always copy it over
+                later, of course, but we'd rather play it safe ourselves and
+                not risk overwriting an important file.""")
+                return False
+            try:
+                fd = file(s, 'w')
+                fd.write('supybot.nick: %s\n' % nick)
+                fd.write('supybot.server: %s\n' % server)
+                fd.write('supybot.channels: %s\n' % channels)
+                fd.close()
+                questions.output("""File %s written.  Now, to run your bot,
+                run this script with just that filename as an option.  Once you
+                do so, your configuration file will become much fuller and more
+                complete, with help descriptions describing all the options and
+                a significant number more options than you see now.  Have fun!
+                """ % s)
+                return True
+            except EnvironmentError, e:
+                questions.output("""Python told me that it couldn't create your
+                file, giving me this specific error: %s.""" % e)
+                return False
+        filename = questions.something("""What filename would you like to write
+        this configuration to?""")
+        while not checkFilename(filename):
+            filename = questions.something("""What filename would you like to
+            write this configuration to?""")
+        questions.output("""Great!  Seeya on the flipside!""")
+        sys.exit(0)
     else:
         registryFilename = args.pop()
         try:
+            # The registry *MUST* be opened before importing log or conf.
             registry.open(registryFilename)
         except registry.InvalidRegistryFile, e:
             sys.stderr.write(str(e))
@@ -135,7 +233,7 @@ if __name__ == '__main__':
         log.info('Writing registry file to %s', registryFilename)
         registry.close(conf.supybot, registryFilename, annotated=True)
         log.info('Finished writing registry file.')
-    atexit.register(closeRegistry)
+    world.flushers.append(closeRegistry)
 
     nick = options.nick or conf.supybot.nick()
     user = options.user or conf.supybot.user()