mirror of
https://github.com/Mikaela/Limnoria.git
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323 lines
12 KiB
Python
323 lines
12 KiB
Python
#!/usr/bin/env python
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###
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# Copyright (c) 2002, Jeremiah Fincher
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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#
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# * Redistributions of source code must retain the above copyright notice,
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# this list of conditions, and the following disclaimer.
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# * Redistributions in binary form must reproduce the above copyright notice,
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# this list of conditions, and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# * Neither the name of the author of this software nor the name of
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# contributors to this software may be used to endorse or promote products
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# derived from this software without specific prior written consent.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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###
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"""
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Allows 'aliases' for other commands.
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"""
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__revision__ = "$Id$"
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import plugins
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import os
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import re
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import sets
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import conf
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import utils
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import privmsgs
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import callbacks
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import structures
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class AliasError(Exception):
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pass
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class RecursiveAlias(AliasError):
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pass
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def findAliasCommand(s, alias):
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s = re.escape(s)
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r = re.compile(r'(?:(^|\[)\s*\b%s\b|\|\s*\b%s\b)' % (s, s))
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return bool(r.search(alias))
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dollarRe = re.compile(r'\$(\d+)')
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def findBiggestDollar(alias):
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dollars = dollarRe.findall(alias)
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dollars = map(int, dollars)
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dollars.sort()
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if dollars:
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return dollars[-1]
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else:
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return 0
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atRe = re.compile(r'@(\d+)')
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def findBiggestAt(alias):
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ats = atRe.findall(alias)
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ats = map(int, ats)
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ats.sort()
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if ats:
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return ats[-1]
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else:
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return 0
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def makeNewAlias(name, alias):
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original = alias
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if findAliasCommand(name, alias):
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raise RecursiveAlias
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biggestDollar = findBiggestDollar(original)
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biggestAt = findBiggestAt(original)
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wildcard = '$*' in original
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if biggestAt and wildcard:
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raise AliasError, 'Can\'t mix $* and optional args (@1, etc.)'
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if original.count('$*') > 1:
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raise AliasError, 'There can be only one $* in an alias.'
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def f(self, irc, msg, args):
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alias = original.replace('$nick', msg.nick)
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if '$channel' in original:
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channel = privmsgs.getChannel(msg, args)
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alias = alias.replace('$channel', channel)
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tokens = callbacks.tokenize(alias)
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if not wildcard and biggestDollar or biggestAt:
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args = privmsgs.getArgs(args,
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required=biggestDollar,
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optional=biggestAt)
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# Gotta have a mutable sequence (for replace).
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if biggestDollar + biggestAt == 1: # We got a string, no tuple.
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args = [args]
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def regexpReplace(m):
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idx = int(m.group(1))
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return args[idx-1]
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def replace(tokens, replacer):
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for (i, token) in enumerate(tokens):
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if isinstance(token, list):
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replace(token, replacer)
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else:
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tokens[i] = replacer(token)
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replace(tokens, lambda s: dollarRe.sub(regexpReplace, s))
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if biggestAt:
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assert not wildcard
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args = args[biggestDollar:]
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replace(tokens, lambda s: atRe.sub(regexpReplace, s))
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if wildcard:
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assert not biggestAt
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# Gotta remove the things that have already been subbed in.
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i = biggestDollar
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while i:
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args.pop(0)
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i -= 1
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def everythingReplace(tokens):
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for (i, token) in enumerate(tokens):
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if isinstance(token, list):
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if everythingReplace(token):
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return
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if token == '$*':
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tokens[i:i+1] = args
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return True
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elif '$*' in token:
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tokens[i] = token.replace('$*', ' '.join(args))
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return True
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return False
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everythingReplace(tokens)
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Owner = irc.getCallback('Owner')
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Owner.disambiguate(irc, tokens)
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self.Proxy(irc.irc, msg, tokens)
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doc ='<an alias, %s>\n\nAlias for %r' % \
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(utils.nItems('argument', biggestDollar), alias)
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f = utils.changeFunctionName(f, name, doc)
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return f
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def preserveAlias(fd, alias, command, locked):
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def write(s):
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fd.write(s)
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fd.write(os.linesep)
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write('alias %s' % alias)
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write(' command %s' % command)
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write(' locked %s' % locked)
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write('')
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filename = os.path.join(conf.supybot.directories.conf(), 'aliases.conf')
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class Alias(callbacks.Privmsg):
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def __init__(self):
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callbacks.Privmsg.__init__(self)
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# Schema: {alias: [command, locked]}
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aliases = {}
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class AliasCreator(object):
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aliasName = None
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def __init__(self):
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self.aliasCommand = None
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self.aliasLocked = None
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def badCommand(self, command, rest, lineno):
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raise ValueError, \
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'Invalid command on line %s: %s' % (lineno, command)
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def alias(self, rest, lineno):
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if self.aliasName is not None:
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raise ValueError, \
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'Unexpected alias command at line %s' % lineno
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AliasCreator.aliasName = rest
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def command(self, rest, lineno):
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if self.aliasName is None:
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raise ValueError, \
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'Unexpected alias configuration at line %s' % lineno
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self.aliasCommand = rest
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def locked(self, rest, lineno):
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if self.aliasName is None:
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raise ValueError, \
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'Unexpected alias configuration at line %s' % lineno
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self.aliasLocked = rest
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def finish(self):
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if self.aliasCommand is None:
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raise ValueError, \
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'Unexpected end of alias configuration at line %s' \
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% lineno
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aliases[self.aliasName] = (self.aliasCommand, self.aliasLocked)
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AliasCreator.aliasName = None
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reader = unpreserve.Reader(AliasCreator)
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reader.readFile(filename)
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def __call__(self, irc, msg):
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# Adding the aliases requires an Irc. So the first time we get called
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# with an Irc, we add our aliases and then delete ourselves :)
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for (alias, (command, locked)) in self.aliases.iteritems():
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try:
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self.addAlias(irc, alias, command, locked)
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except Exception, e:
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self.log.exception('Exception when trying to add alias %s. '
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'Removing from the Alias database.' % name)
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del self.aliases[name]
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del self.__class__.__call__
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callbacks.Privmsg.__call__(self, irc, msg)
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def die(self):
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fd = file(filename, 'w')
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for (alias, (command, locked)) in self.aliases.iteritems():
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preserveAlias(fd, alias, command, locked)
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fd.close()
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def lock(self, irc, msg, args):
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"""<alias>
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Locks an alias so that no one else can change it.
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"""
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name = privmsgs.getArgs(args)
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name = callbacks.canonicalName(name)
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if hasattr(self, name) and self.isCommand(name):
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self.aliases[name][1] = True
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irc.replySuccess()
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else:
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irc.error('There is no such alias.')
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lock = privmsgs.checkCapability(lock, 'admin')
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def unlock(self, irc, msg, args):
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"""<alias>
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Unlocks an alias so that people can define new aliases over it.
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"""
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name = privmsgs.getArgs(args)
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name = callbacks.canonicalName(name)
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if hasattr(self, name) and self.isCommand(name):
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self.aliases[name][1] = False
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irc.replySuccess()
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else:
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irc.error('There is no such alias.')
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unlock = privmsgs.checkCapability(unlock, 'admin')
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_invalidCharsRe = re.compile(r'[\[\]\s]')
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def addAlias(self, irc, name, alias, lock=False):
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if self._invalidCharsRe.search(name):
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raise AliasError, 'Names cannot contain spaces or square brackets.'
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if conf.supybot.pipeSyntax() and '|' in name:
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raise AliasError, 'Names cannot contain pipes.'
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realName = callbacks.canonicalName(name)
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if name != realName:
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s = 'That name isn\'t valid. Try %r instead.' % realName
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raise AliasError, s
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name = realName
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cbs = callbacks.findCallbackForCommand(irc, name)
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if self in cbs:
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if hasattr(self, realName) and realName not in self.aliases:
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s = 'You can\'t overwrite commands in this plugin.'
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raise AliasError, s
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if name in self.aliases:
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(currentAlias, locked) = self.aliases[name]
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if locked and currentAlias != alias:
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raise AliasError, 'Alias %r is locked.' % name
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try:
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f = makeNewAlias(name, alias)
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except RecursiveAlias:
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raise AliasError, 'You can\'t define a recursive alias.'
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setattr(self.__class__, name, f)
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self.aliases[name] = [alias, lock]
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def removeAlias(self, name, evenIfLocked=False):
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name = callbacks.canonicalName(name)
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if hasattr(self, name) and self.isCommand(name):
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if evenIfLocked or not self.aliases[name][1]:
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delattr(self.__class__, name)
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del self.aliases[name]
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else:
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raise AliasError, 'That alias is locked.'
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else:
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raise AliasError, 'There is no such alias.'
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def add(self, irc, msg, args):
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"""<name> <alias>
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Defines an alias <name> that executes <alias>. The <alias>
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should be in the standard "command argument [nestedcommand argument]"
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format. $[digit] (like $1, $2, etc.) can be used to represent
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arguments to the alias; they'll be filled with the first, second, etc.
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arguments. @1, @2 can be used for optional arguments. $* simply
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means "all remaining arguments," and cannot be combined with optional
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arguments.
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"""
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(name, alias) = privmsgs.getArgs(args, required=2)
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try:
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self.addAlias(irc, name, alias)
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self.log.info('Adding alias %r for %r (from %s)' %
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(name, alias, msg.prefix))
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irc.replySuccess()
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except AliasError, e:
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irc.error(str(e))
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def remove(self, irc, msg, args):
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"""<name>
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Removes the given alias, if unlocked.
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"""
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name = privmsgs.getArgs(args)
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try:
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self.removeAlias(name)
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self.log.info('Removing alias %r (from %s)' % (name, msg.prefix))
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irc.replySuccess()
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except AliasError, e:
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irc.error(str(e))
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Class = Alias
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# vim:set shiftwidth=4 tabstop=8 expandtab textwidth=78:
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