135 lines
5.8 KiB
Python
135 lines
5.8 KiB
Python
"""
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Alias - have internal shortcuts to commands
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Copyright (C) 2010 Brian S. Stephan
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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"""
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from ConfigParser import NoOptionError, NoSectionError
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import re
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from extlib import irclib
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from Module import Module
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class Alias(Module):
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"""Alias commands as !command, circumventing bot addressing stuff."""
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def do(self, connection, event, nick, userhost, replypath, what, admin_unlocked):
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"""See if there is an alias ("!command") in the text, and if so, translate it into
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an internal bot command and run it.
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"""
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# first see if the aliases are being directly manipulated via add/remove
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whats = what.split(' ')
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try:
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if whats[0] == '!alias' and whats[1] == 'add' and len(whats) >= 4:
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if not self.config.has_section(self.__class__.__name__):
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self.config.add_section(self.__class__.__name__)
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self.config.set(self.__class__.__name__, whats[2], ' '.join(whats[3:]))
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replystr = 'Added alias ' + whats[2] + '.'
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return self.reply(connection, replypath, replystr)
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if whats[0] == '!alias' and whats[1] == 'remove' and len(whats) >= 3:
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if not self.config.has_section(self.__class__.__name__):
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self.config.add_section(self.__class__.__name__)
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if self.config.remove_option(self.__class__.__name__, whats[2]):
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replystr = 'Removed alias ' + whats[2] + '.'
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return self.reply(connection, replypath, replystr)
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elif whats[0] == '!alias' and whats[1] == 'list':
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try:
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if len(whats) > 2:
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alias = self.config.get(self.__class__.__name__, whats[2])
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return self.reply(connection, replypath, alias)
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else:
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alist = self.config.options(self.__class__.__name__)
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self.remove_metaoptions(alist)
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alist.sort()
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liststr = ', '.join(alist)
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return self.reply(connection, replypath, liststr)
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except NoSectionError: pass
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except NoOptionError: pass
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except NoSectionError: pass
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# search for recursions, which will search for recursions, which ...
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what = self.try_recursion(connection, event, nick, userhost, None, what, admin_unlocked)
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# done searching for recursions in this level. we will now operate on
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# whatever recursion-satisfied string we have, checking for alias and
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# running module commands
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# now that that's over, try doing alias work
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try:
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alias_list = self.config.options(self.__class__.__name__)
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self.remove_metaoptions(alias_list)
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for alias in alias_list:
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alias_re = re.compile(alias)
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if alias_re.search(what):
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command = re.sub(alias, self.config.get(self.__class__.__name__, alias), what)
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# we found an alias for our given string, doing a replace
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# need to do another recursion scan
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command = self.try_recursion(connection, event, nick, userhost, None, command, admin_unlocked)
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# running it against each module
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for module in self.modlist:
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ret = module.do(connection, event, nick, userhost, None, command, admin_unlocked)
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if ret is not None:
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# a module had a result for us, post-alias, so return it
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# TODO: scan all modules with compounding results
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return self.reply(connection, replypath, ret)
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except NoOptionError: pass
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except NoSectionError: pass
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def try_recursion(self, connection, event, nick, userhost, replypath, what, admin_unlocked):
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"""Scan message for subcommands to execute and use as part of this command.
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Upon seeing a line intended for this module, see if there are subcommands
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that we should do what is basically a text replacement on. The intent is to
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allow things like the following:
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command arg1 [anothercommand arg1 arg2]
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where the output of anothercommand is command's arg2..n.
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"""
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start_idx = what.find('[')
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subcmd = what[start_idx+1:]
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end_idx = subcmd.rfind(']')
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subcmd = subcmd[:end_idx]
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attempt = what
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if start_idx == -1 or end_idx == -1 or len(subcmd) == 0:
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# no alias, just returning what we got
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return attempt
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else:
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# we have a subcmd, see if there's another one nested
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# this will include more calls to Alias, which will try recursing again
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for module in self.modlist:
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ret = module.do(connection, event, nick, userhost, None, subcmd, admin_unlocked)
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if ret is not None:
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# some module had a change, so we replace [subcmd] with ret and return it
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return attempt.replace('['+subcmd+']', ret)
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# we got here, no one had a replacement. return what we had
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return attempt
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# vi:tabstop=4:expandtab:autoindent
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# kate: indent-mode python;indent-width 4;replace-tabs on;
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