Limnoria/plugins/Aka/plugin.py

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###
# Copyright (c) 2013, Valentin Lorentz
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions, and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions, and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# * Neither the name of the author of this software nor the name of
# contributors to this software may be used to endorse or promote products
# derived from this software without specific prior written consent.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
###
import re
import os
import sys
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import datetime
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import operator
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import supybot.conf as conf
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import supybot.utils as utils
import supybot.ircdb as ircdb
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from supybot.commands import *
import supybot.plugins as plugins
import supybot.ircutils as ircutils
import supybot.callbacks as callbacks
from supybot.i18n import PluginInternationalization
_ = PluginInternationalization('Aka')
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try:
import sqlite3
except ImportError:
sqlite3 = None
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try:
import sqlalchemy
import sqlalchemy.ext
import sqlalchemy.ext.declarative
except ImportError:
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sqlalchemy = None
if not (sqlite3 or sqlalchemy):
raise callbacks.Error('You have to install python-sqlite3 or '
'python-sqlalchemy in order to load this plugin.')
available_db = {}
class Alias(object):
__slots__ = ('name', 'alias', 'locked', 'locked_by', 'locked_at')
def __init__(self, name, alias):
self.name = name
self.alias = alias
self.locked = False
self.locked_by = None
self.locked_at = None
def __repr__(self):
return "<Alias('%r', '%r')>" % (self.name, self.alias)
if sqlite3:
class SQLiteAkaDB(object):
__slots__ = ('engines', 'filename', 'dbs',)
def __init__(self, filename):
self.engines = ircutils.IrcDict()
self.filename = filename.replace('sqlite3', 'sqlalchemy')
def close(self):
self.dbs.clear()
def get_db(self, channel):
if channel in self.engines:
engine = self.engines[channel]
else:
filename = plugins.makeChannelFilename(self.filename, channel)
exists = os.path.exists(filename)
engine = sqlite3.connect(filename, check_same_thread=False)
if not exists:
cursor = engine.cursor()
cursor.execute("""CREATE TABLE aliases (
id INTEGER NOT NULL,
name VARCHAR NOT NULL,
alias VARCHAR NOT NULL,
locked BOOLEAN NOT NULL,
locked_by VARCHAR,
locked_at DATETIME,
PRIMARY KEY (id),
UNIQUE (name))""")
engine.commit()
self.engines[channel] = engine
assert engine.execute("select 1").fetchone() == (1,)
return engine
def has_aka(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
db = self.get_db(channel)
return self.get_db(channel).cursor() \
.execute("""SELECT COUNT() as count
FROM aliases WHERE name = ?;""", (name,)) \
.fetchone()[0]
def get_aka_list(self, channel):
cursor = self.get_db(channel).cursor()
cursor.execute("""SELECT name FROM aliases;""")
list_ = cursor.fetchall()
return list_
def get_alias(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
cursor = self.get_db(channel).cursor()
cursor.execute("""SELECT alias FROM aliases
WHERE name = ?;""", (name,))
r = cursor.fetchone()
if r:
return r[0]
else:
return None
def add_aka(self, channel, name, alias):
name = callbacks.canonicalName(name, preserve_spaces=True)
if self.has_aka(channel, name):
raise AkaError(_('This Aka already exists.'))
if sys.version_info[0] < 3:
if isinstance(name, str):
name = name.decode('utf8')
if isinstance(alias, str):
alias = alias.decode('utf8')
db = self.get_db(channel)
cursor = db.cursor()
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cursor.execute("""INSERT INTO aliases VALUES (
NULL, ?, ?, 0, NULL, NULL);""", (name, alias))
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db.commit()
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def remove_aka(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
db = self.get_db(channel)
db.cursor().execute('DELETE FROM aliases WHERE name = ?', (name,))
db.commit()
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def lock_aka(self, channel, name, by):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
db = self.get_db(channel)
cursor = db.cursor().execute("""UPDATE aliases
SET locked=1, locked_at=?, locked_by=? WHERE name = ?""",
(datetime.datetime.now(), by, name))
if cursor.rowcount == 0:
raise AkaError(_('This Aka does not exist'))
db.commit()
def unlock_aka(self, channel, name, by):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
db = self.get_db(channel)
cursor = db.cursor()
cursor.execute("""UPDATE aliases SET locked=0, locked_at=?
WHERE name = ?""", (datetime.datetime.now(), name))
if cursor.rowcount == 0:
raise AkaError(_('This Aka does not exist'))
db.commit()
def get_aka_lock(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
cursor = self.get_db(channel).cursor()
cursor.execute("""SELECT locked, locked_by, locked_at
FROM aliases WHERE name = ?;""", (name,))
r = cursor.fetchone()
if r:
return (bool(r[0]), r[1], r[2])
else:
raise AkaError(_('This Aka does not exist'))
available_db.update({'sqlite3': SQLiteAkaDB})
elif sqlalchemy:
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Base = sqlalchemy.ext.declarative.declarative_base()
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class SQLAlchemyAlias(Alias, Base):
__slots__ = ()
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__tablename__ = 'aliases'
id = sqlalchemy.Column(sqlalchemy.Integer, primary_key=True)
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name = sqlalchemy.Column(sqlalchemy.String, unique=True, nullable=False)
alias = sqlalchemy.Column(sqlalchemy.String, nullable=False)
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locked = sqlalchemy.Column(sqlalchemy.Boolean, nullable=False)
locked_by = sqlalchemy.Column(sqlalchemy.String, nullable=True)
locked_at = sqlalchemy.Column(sqlalchemy.DateTime, nullable=True)
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# TODO: Add table for usage statistics
class SqlAlchemyAkaDB(object):
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__slots__ = ('engines', 'filename', 'sqlalchemy', 'dbs')
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def __init__(self, filename):
self.engines = ircutils.IrcDict()
self.filename = filename
self.sqlalchemy = sqlalchemy
def close(self):
self.dbs.clear()
def get_db(self, channel):
if channel in self.engines:
engine = self.engines[channel]
else:
filename = plugins.makeChannelFilename(self.filename, channel)
exists = os.path.exists(filename)
engine = sqlalchemy.create_engine('sqlite:///' + filename)
if not exists:
Base.metadata.create_all(engine)
self.engines[channel] = engine
assert engine.execute("select 1").scalar() == 1
Session = sqlalchemy.orm.sessionmaker()
Session.configure(bind=engine)
return Session()
def has_aka(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
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count = self.get_db(channel).query(SQLAlchemyAlias) \
.filter(SQLAlchemyAlias.name == name) \
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.count()
return bool(count)
def get_aka_list(self, channel):
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list_ = list(self.get_db(channel).query(SQLAlchemyAlias.name))
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return list_
def get_alias(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
try:
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return self.get_db(channel).query(SQLAlchemyAlias.alias) \
.filter(SQLAlchemyAlias.name == name).one()[0]
except sqlalchemy.orm.exc.NoResultFound:
return None
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def add_aka(self, channel, name, alias):
name = callbacks.canonicalName(name, preserve_spaces=True)
if self.has_aka(channel, name):
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raise AkaError(_('This Aka already exists.'))
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if sys.version_info[0] < 3:
if isinstance(name, str):
name = name.decode('utf8')
if isinstance(alias, str):
alias = alias.decode('utf8')
db = self.get_db(channel)
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db.add(SQLAlchemyAlias(name, alias))
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db.commit()
def remove_aka(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
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db = self.get_db(channel)
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db.query(SQLAlchemyAlias).filter(SQLAlchemyAlias.name == name).delete()
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db.commit()
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def lock_aka(self, channel, name, by):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
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db = self.get_db(channel)
try:
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aka = db.query(SQLAlchemyAlias) \
.filter(SQLAlchemyAlias.name == name).one()
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except sqlalchemy.orm.exc.NoResultFound:
raise AkaError(_('This Aka does not exist'))
if aka.locked:
raise AkaError(_('This Aka is already locked.'))
aka.locked = True
aka.locked_by = by
aka.locked_at = datetime.datetime.now()
db.commit()
def unlock_aka(self, channel, name, by):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
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db = self.get_db(channel)
try:
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aka = db.query(SQLAlchemyAlias) \
.filter(SQLAlchemyAlias.name == name).one()
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except sqlalchemy.orm.exc.NoResultFound:
raise AkaError(_('This Aka does not exist'))
if not aka.locked:
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raise AkaError(_('This Aka is already unlocked.'))
aka.locked = False
aka.locked_by = by
aka.locked_at = datetime.datetime.now()
db.commit()
def get_aka_lock(self, channel, name):
name = callbacks.canonicalName(name, preserve_spaces=True)
if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
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try:
return self.get_db(channel) \
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.query(SQLAlchemyAlias.locked, SQLAlchemyAlias.locked_by, SQLAlchemyAlias.locked_at)\
.filter(SQLAlchemyAlias.name == name).one()
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except sqlalchemy.orm.exc.NoResultFound:
raise AkaError(_('This Aka does not exist'))
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available_db.update({'sqlalchemy': SqlAlchemyAkaDB})
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def getArgs(args, required=1, optional=0, wildcard=0):
if len(args) < required:
raise callbacks.ArgumentError
if len(args) < required + optional:
ret = list(args) + ([''] * (required + optional - len(args)))
elif len(args) >= required + optional:
if not wildcard:
ret = list(args[:required + optional - 1])
ret.append(' '.join(args[required + optional - 1:]))
else:
ret = list(args)
return ret
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class AkaError(Exception):
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pass
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class RecursiveAlias(AkaError):
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pass
dollarRe = re.compile(r'\$(\d+)')
def findBiggestDollar(alias):
dollars = dollarRe.findall(alias)
dollars = list(map(int, dollars))
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dollars.sort()
if dollars:
return dollars[-1]
else:
return 0
atRe = re.compile(r'@(\d+)')
def findBiggestAt(alias):
ats = atRe.findall(alias)
ats = list(map(int, ats))
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ats.sort()
if ats:
return ats[-1]
else:
return 0
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AkaDB = plugins.DB('Aka', available_db)
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class Aka(callbacks.Plugin):
"""Add the help for "@plugin help Aka" here
This should describe *how* to use this plugin."""
def __init__(self, irc):
self.__parent = super(Aka, self)
self.__parent.__init__(irc)
self._db = AkaDB()
def isCommandMethod(self, name):
args = name.split(' ')
if '|' in args:
return False
if len(args) > 1 and \
callbacks.canonicalName(args[0]) != self.canonicalName():
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for cb in dynamic.irc.callbacks: # including this plugin
if cb.isCommandMethod(' '.join(args[0:-1])):
return False
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if sys.version_info[0] < 3 and isinstance(name, str):
name = name.decode('utf8')
channel = dynamic.channel or 'global'
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return self._db.has_aka(channel, name) or \
self._db.has_aka('global', name) or \
self.__parent.isCommandMethod(name)
isCommand = isCommandMethod
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def listCommands(self):
channel = dynamic.channel or 'global'
return list(set(list(map(callbacks.formatCommand,
self._db.get_aka_list(channel) +
self._db.get_aka_list('global'))) +
['add', 'remove', 'lock', 'unlock', 'importaliasdatabase']))
def getCommand(self, args, check_other_plugins=True):
canonicalName = callbacks.canonicalName
# All the code from here to the 'for' loop is copied from callbacks.py
assert args == list(map(canonicalName, args))
first = args[0]
for cb in self.cbs:
if first == cb.canonicalName():
return cb.getCommand(args[1:])
if first == self.canonicalName() and len(args) > 1:
ret = self.getCommand(args[1:], False)
if ret:
return [first] + ret
max_length = self.registryValue('maximumWordsInName')
for i in xrange(1, min(len(args)+1, max_length)):
if self.isCommandMethod(callbacks.formatCommand(args[0:i])):
return args[0:i]
return []
def getCommandMethod(self, command):
if len(command) == 1 or command[0] == self.canonicalName():
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try:
return self.__parent.getCommandMethod(command)
except AttributeError:
pass
name = callbacks.formatCommand(command)
channel = dynamic.channel or 'global'
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original = self._db.get_alias(channel, name)
if not original:
original = self._db.get_alias('global', name)
biggestDollar = findBiggestDollar(original)
biggestAt = findBiggestAt(original)
wildcard = '$*' in original
def f(irc, msg, args):
tokens = callbacks.tokenize(original)
if biggestDollar or biggestAt:
args = getArgs(args, required=biggestDollar, optional=biggestAt,
wildcard=wildcard)
max_len = conf.supybot.reply.maximumLength()
args = list([x[:max_len] for x in args])
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def regexpReplace(m):
idx = int(m.group(1))
return args[idx-1]
def replace(tokens, replacer):
for (i, token) in enumerate(tokens):
if isinstance(token, list):
replace(token, replacer)
else:
tokens[i] = replacer(token)
replace(tokens, lambda s: dollarRe.sub(regexpReplace, s))
if biggestAt:
assert not wildcard
args = args[biggestDollar:]
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replace(tokens, lambda s: atRe.sub(regexpReplace, s))
if wildcard:
assert not biggestAt
# Gotta remove the things that have already been subbed in.
i = biggestDollar
while i:
args.pop(0)
i -= 1
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def everythingReplace(tokens):
for (i, token) in enumerate(tokens):
if isinstance(token, list):
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if everythingReplace(token):
return
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if token == '$*':
tokens[i:i+1] = args
return True
elif '$*' in token:
tokens[i] = token.replace('$*', ' '.join(args))
return True
return False
everythingReplace(tokens)
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maxNesting = conf.supybot.commands.nested.maximum()
if maxNesting and irc.nested+1 > maxNesting:
irc.error(_('You\'ve attempted more nesting than is '
'currently allowed on this bot.'), Raise=True)
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self.Proxy(irc, msg, tokens)
if biggestDollar and (wildcard or biggestAt):
flexargs = _(' at least')
else:
flexargs = ''
try:
lock = self._db.get_aka_lock(channel, name)
except AkaError:
lock = self._db.get_aka_lock('global', name)
(locked, locked_by, locked_at) = lock
if locked:
lock = ' ' + _('Locked by %s at %s') % (locked_by, locked_at)
else:
lock = ''
doc = format(_('<an alias,%s %n>\n\nAlias for %q.%s'),
flexargs, (biggestDollar, _('argument')), original, lock)
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f = utils.python.changeFunctionName(f, name, doc)
return f
def _add_aka(self, channel, name, alias):
if self.__parent.isCommandMethod(name):
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raise AkaError(_('You can\'t overwrite commands in '
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'this plugin.'))
if self._db.has_aka(channel, name):
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raise AkaError(_('This Aka already exists.'))
if len(name.split(' ')) > self.registryValue('maximumWordsInName'):
raise AkaError(_('This Aka has too many spaces in its name.'))
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biggestDollar = findBiggestDollar(alias)
biggestAt = findBiggestAt(alias)
wildcard = '$*' in alias
if biggestAt and wildcard:
raise AkaError(_('Can\'t mix $* and optional args (@1, etc.)'))
if alias.count('$*') > 1:
raise AkaError(_('There can be only one $* in an alias.'))
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self._db.add_aka(channel, name, alias)
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def _remove_aka(self, channel, name, evenIfLocked=False):
if not evenIfLocked:
(locked, by, at) = self._db.get_aka_lock(channel, name)
if locked:
raise AkaError(_('This Aka is locked.'))
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self._db.remove_aka(channel, name)
def add(self, irc, msg, args, optlist, name, alias):
"""[--channel <#channel>] <name> <command>
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Defines an alias <name> that executes <command>. The <command>
should be in the standard "command argument [nestedcommand argument]"
arguments to the alias; they'll be filled with the first, second, etc.
arguments. $1, $2, etc. can be used for required arguments. @1, @2,
etc. can be used for optional arguments. $* simply means "all
arguments that have not replaced $1, $2, etc.", ie. it will also
include optional arguments.
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"""
channel = 'global'
for (option, arg) in optlist:
if option == 'channel':
if not ircutils.isChannel(arg):
irc.error(_('%r is not a valid channel.') % arg,
Raise=True)
channel = arg
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if ' ' not in alias:
# If it's a single word, they probably want $*.
alias += ' $*'
try:
self._add_aka(channel, name, alias)
self.log.info('Adding Aka %r for %r (from %s)',
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name, alias, msg.prefix)
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irc.replySuccess()
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except AkaError as e:
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irc.error(str(e))
add = wrap(add, [getopts({
'channel': 'somethingWithoutSpaces',
}), 'something', 'text'])
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def remove(self, irc, msg, args, optlist, name):
"""[--channel <#channel>] <name>
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Removes the given alias, if unlocked.
"""
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channel = 'global'
for (option, arg) in optlist:
if option == 'channel':
if not ircutils.isChannel(arg):
irc.error(_('%r is not a valid channel.') % arg,
Raise=True)
channel = arg
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try:
self._remove_aka(channel, name)
self.log.info('Removing Aka %r (from %s)', name, msg.prefix)
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irc.replySuccess()
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except AkaError as e:
irc.error(str(e))
remove = wrap(remove, [getopts({
'channel': 'somethingWithoutSpaces',
}), 'something'])
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def _checkManageCapabilities(self, irc, msg, channel):
"""Check if the user has any of the required capabilities to manage
the regexp database."""
if channel != 'global':
capability = ircdb.makeChannelCapability(channel, 'op')
else:
capability = 'admin'
if not ircdb.checkCapability(msg.prefix, capability):
irc.errorNoCapability(capability, Raise=True)
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def lock(self, irc, msg, args, optlist, user, name):
"""[--channel <#channel>] <alias>
Locks an alias so that no one else can change it.
"""
channel = 'global'
for (option, arg) in optlist:
if option == 'channel':
if not ircutils.isChannel(arg):
irc.error(_('%r is not a valid channel.') % arg,
Raise=True)
channel = arg
self._checkManageCapabilities(irc, msg, channel)
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try:
self._db.lock_aka(channel, name, user.name)
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except AkaError as e:
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irc.error(str(e))
else:
irc.replySuccess()
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lock = wrap(lock, [getopts({
'channel': 'somethingWithoutSpaces',
}), 'user', 'something'])
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def unlock(self, irc, msg, args, optlist, user, name):
"""[--channel <#channel>] <alias>
Unlocks an alias so that people can define new aliases over it.
"""
channel = 'global'
for (option, arg) in optlist:
if option == 'channel':
if not ircutils.isChannel(arg):
irc.error(_('%r is not a valid channel.') % arg,
Raise=True)
channel = arg
self._checkManageCapabilities(irc, msg, channel)
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try:
self._db.unlock_aka(channel, name, user.name)
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except AkaError as e:
irc.error(str(e))
else:
irc.replySuccess()
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unlock = wrap(unlock, [getopts({
'channel': 'somethingWithoutSpaces',
}), 'user', 'something'])
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def importaliasdatabase(self, irc, msg, args):
"""takes no arguments
Imports the Alias database into Aka's, and clean the former."""
alias_plugin = irc.getCallback('Alias')
if alias_plugin is None:
irc.error(_('Alias plugin is not loaded.'), Raise=True)
errors = {}
for (name, (command, locked, func)) in alias_plugin.aliases.items():
try:
self._add_aka('global', name, command)
except AkaError as e:
errors[name] = e.args[0]
else:
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alias_plugin.removeAlias(name, evenIfLocked=True)
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if errors:
irc.error(format(_('Error occured when importing the %n: %L'),
(len(errors), 'following', 'command'),
['%s (%s)' % x for x in errors.items()]))
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else:
irc.replySuccess()
importaliasdatabase = wrap(importaliasdatabase, ['owner'])
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Class = Aka
# vim:set shiftwidth=4 softtabstop=4 expandtab textwidth=79: