Limnoria/plugins/Debug/plugin.py

#!/usr/bin/python

###
# Copyright (c) 2002-2005, Jeremiah Fincher
# All rights reserved.
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# modification, are permitted provided that the following conditions are met:
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#   * Redistributions of source code must retain the above copyright notice,
#     this list of conditions, and the following disclaimer.
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#     this list of conditions, and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
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#     contributors to this software may be used to endorse or promote products
#     derived from this software without specific prior written consent.
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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###

"""
This is for debugging purpouses and you shouldn't load this plugin unless
Supybot developer requests you to do so for debugging some issue.
"""

import supybot.plugins as plugins

import gc
import os
import sys
try:
    import exceptions
except ImportError: # Python 3
    import builtins
    class exceptions:
        """Pseudo-module"""
        pass
    for (key, value) in list(exceptions.__dict__.items()):
        if isinstance(value, type) and issubclass(value, Exception):
            exceptions[key] = value

import supybot.conf as conf
import supybot.utils as utils
import supybot.ircdb as ircdb
from supybot.commands import *
import supybot.ircmsgs as ircmsgs
import supybot.callbacks as callbacks

def getTracer(fd):
    def tracer(frame, event, _):
        if event == 'call':
            code = frame.f_code
            fd.write('%s: %s\n' % (code.co_filename, code.co_name))
    return tracer

class Debug(callbacks.Privmsg):
    """This plugin provides debugging abilities for Supybot. It
    should not be loaded with a default installation."""
    capability = 'owner'
    def __init__(self, irc):
        # Setup exec command.
        self.__parent = super(Debug, self)
        self.__parent.__init__(irc)
        setattr(self.__class__, 'exec', self.__class__._exec)

    def callCommand(self, name, irc, msg, *args, **kwargs):
        if ircdb.checkCapability(msg.prefix, self.capability):
            self.__parent.callCommand(name, irc, msg, *args, **kwargs)
        else:
            irc.errorNoCapability(self.capability)
            
    _evalEnv = {'_': None,
                '__': None,
                '___': None,
                }
    _evalEnv.update(globals())
    def eval(self, irc, msg, args, s):
        """<expression>

        Evaluates <expression> (which should be a Python expression) and
        returns its value.  If an exception is raised, reports the
        exception (and logs the traceback to the bot's logfile).
        """
        try:
            self._evalEnv.update(locals())
            x = eval(s, self._evalEnv, self._evalEnv)
            self._evalEnv['___'] = self._evalEnv['__']
            self._evalEnv['__'] = self._evalEnv['_']
            self._evalEnv['_'] = x
            irc.reply(repr(x))
        except SyntaxError as e:
            irc.reply(format('%s: %q', utils.exnToString(e), s))
    eval = wrap(eval, ['text'])

    def _exec(self, irc, msg, args, s):
        """<statement>

        Execs <code>.  Returns success if it didn't raise any exceptions.
        """
        exec(s)
        irc.replySuccess()
    _exec = wrap(_exec, ['text'])

    def simpleeval(self, irc, msg, args, text):
        """<expression>

        Evaluates the given expression.
        """
        try:
            irc.reply(repr(eval(text)))
        except Exception as e:
            irc.reply(utils.exnToString(e))
    simpleeval = wrap(simpleeval, ['text'])

    def exn(self, irc, msg, args, name):
        """<exception name>

        Raises the exception matching <exception name>.
        """
        if isinstance(__builtins__, dict):
            exn = __builtins__[name]
        else:
            exn = getattr(__builtins__, name)
        raise exn(msg.prefix)
    exn = wrap(exn, ['text'])

    def sendquote(self, irc, msg, args, text):
        """<raw IRC message>

        Sends (not queues) the raw IRC message given.
        """
        msg = ircmsgs.IrcMsg(text)
        irc.sendMsg(msg)
    sendquote = wrap(sendquote, ['text'])

    def settrace(self, irc, msg, args, filename):
        """[<filename>]

        Starts tracing function calls to <filename>.  If <filename> is not
        given, sys.stdout is used.  This causes much output.
        """
        if filename:
            fd = open(filename, 'a')
        else:
            fd = sys.stdout
        sys.settrace(getTracer(fd))
        irc.replySuccess()
    settrace = wrap(settrace, [additional('filename')])

    def unsettrace(self, irc, msg, args):
        """takes no arguments

        Stops tracing function calls on stdout.
        """
        sys.settrace(None)
        irc.replySuccess()
    unsettrace = wrap(unsettrace)

    def channeldb(self, irc, msg, args, channel):
        """[<channel>]

        Returns the result of the channeldb converter.
        """
        irc.reply(channel)
    channeldb = wrap(channeldb, ['channeldb'])

    def collect(self, irc, msg, args, times):
        """[<times>]

        Does <times> gc collections, returning the number of objects collected
        each time.  <times> defaults to 1.
        """
        L = []
        while times:
            L.append(gc.collect())
            times -= 1
        irc.reply(format('%L', list(map(str, L))))
    collect = wrap(collect, [additional('positiveInt', 1)])

    def environ(self, irc, msg, args):
        """takes no arguments

        Returns the environment of the supybot process.
        """
        irc.reply(repr(os.environ))
    environ = wrap(environ)


Class = Debug

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