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586 lines
18 KiB
Plaintext
586 lines
18 KiB
Plaintext
<!DOCTYPE article SYSTEM "supybot.dtd">
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<article>
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<articleinfo>
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<authorgroup>
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<author>
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<firstname>Jeremiah</firstname>
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<surname>Fincher</surname>
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</author>
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<editor>
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<firstname>Daniel</firstname>
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<surname>DiPaolo</surname>
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<contrib>DocBook translator</contrib>
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</editor>
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</authorgroup>
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<title>Supybot developer interfaces</title>
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<revhistory>
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<revision>
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<revnumber>0.1</revnumber>
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<date>19 Feb 2004</date>
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<revremark>Initial Docbook translation</revremark>
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</revision>
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<revision>
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<revnumber>0.2</revnumber>
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<date>26 Feb 2004</date>
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<revremark>Converted to Supybot DTD</revremark>
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</revision>
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</revhistory>
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</articleinfo>
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<sect1>
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<title>Available interfaces</title>
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<para>
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These are the interfaces for some of the objects you'll deal with
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if you code for Supybot.
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</para>
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<sect2>
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<title><classname>ircmsgs.IrcMsg</classname>
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<para>
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This is the object that represents an IRC message. It has
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several methods and attributes. The most important thing
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about this class, however, is that it <emphasis>is</emphasis>
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hashable, and thus <emphasis>cannot</emphasis> be modified.
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Do not change any attributes; any code that modifies an IRC
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message is <emphasis>broken</emphasis> and should not exist.
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</para>
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<variablelist>
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<title>Interesting methods</title>
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<varlistentry>
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<term>__init__</term>
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<listitem>
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<para>
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One of the more complex initializers in a class.
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It can be used in three different ways:
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</para>
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<orderedlist numeration="arabic" spacing="normal">
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<listitem>
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<para>
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It can be given a string, as one received
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from the server, which it will then parse
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into its separate components and
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instantiate the class with those
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components as attributes.
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</para>
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</listitem>
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<listitem>
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<para>
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It can be given a command, some (optional)
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arguments, and a (optional) prefix, and
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will instantiate the class with those
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components as attributes.
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</para>
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</listitem>
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<listitem>
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<para>
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It can be given, in addition to any of the
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above arguments, a <varname>msg</varname>
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keyword argument that will use the
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attributes of msg as defaults. This
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exists to make it easier to copy messages,
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since the class is immutable.
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</para>
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</listitem>
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</orderedlist>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>__str__</term>
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<listitem>
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<para>
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This returns the message in a string form suitable
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for sending to a server.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>__repr__</term>
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<listitem>
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<para>
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This returns the message in a form suitable for
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<function>eval()</function>, assuming the name
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<varname>IrcMsg</varname> is in your namespace and
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is bound to this class.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<para>
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The following attributes are the meat of this class. These
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are generally what you'll be looking at with
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<varname>IrcMsg</varname>s.
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</para>
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<variablelist>
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<title>Interesting attributes</title>
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<varlistentry>
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<term>command</term>
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<listitem>
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<para>
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This is the command of the
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<varname>IrcMsg</varname> –
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<literal>PRIVMSG</literal>,
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<literal>NOTICE</literal>,
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<literal>WHOIS</literal>,
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etc.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>args</term>
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<listitem>
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<para>
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This is a tuple of the arguments to the
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<varname>IrcMsg</varname>. Some messages have
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arguments, some don't, depending on what command
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they are. You are, of course, always assured that
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<varname>args</varname> exists and is a tuple,
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though it might be empty.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>prefix</term>
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<listitem>
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<para>
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This is the hostmask of the person/server the
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message is from. In general, you won't be setting
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this on your outgoing messages, but incoming
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messages will always have one. This is the whole
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hostmask; if the message was received from a
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server, it'll be the server's hostmask; if the
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message was received from a user, it'll be the
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whole user hostmask. In that case, however, it's
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also parsed out into the
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<varname>nick</varname>/<varname>user</varname>/<varname>host</varname>
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attributes, which are probably more useful to
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check for many purposes.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>nick</term>
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<listitem>
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<para>
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If the message was sent by a user, this will be
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the nick of the user. If it was sent by a server,
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this will be the server's name (something like
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<literal>calvino.freenode.net</literal> or
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similar).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>user</term>
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<listitem>
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<para>
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If the message was sent by a user, this will be
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the user string of the user – what they put
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into their IRC client for their "full name." If
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it was sent by a server, it'll be the server's
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name, again.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>host</term>
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<listitem>
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<para>
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If the message was sent by a user, this will be
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the host portion of their hostmask. If it was
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sent by a server, it'll be the server's name (yet
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again :))
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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<sect2>
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<title><classname>irclib.Irc</classname>
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<para>
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This is the object to handle everything about IRC except the
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actual connection to the server itself.
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(<emphasis>NOTE</emphasis> that the object actually received
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by commands in subclasses of
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<classname>callbacks.Privmsg</classname> is an
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<classname>IrcObjectProxy</classname>, which is described
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later. It augments the following interface with several
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methods of its own to help plugin authors.)
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</para>
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<variablelist>
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<title>Interesting methods</title>
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<varlistentry>
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<term>queueMsg</term>
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<listitem>
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<para>
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Queues a message for sending to the server. The
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queue is generally FIFO, but it does prioritize
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messages based on their command.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>sendMsg</term>
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<listitem>
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<para>
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Queues a message for sending to the server prior
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to any messages in the normal queue. This is
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exactly a FIFO queue, no reordering is done at
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all.
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</para>
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</listitem>
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</varlistentry>
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<!--<note>
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<para>
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The following two methods are the most important for
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people writing new <varname>IrcDriver</varname>s.
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Otherwise, you really don't need to pay attention to
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them.
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</para>
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</note>-->
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<varlistentry>
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<term>feedMsg</term>
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<listitem>
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<para>
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Feeds the <varname>Irc</varname> object a message
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for it handle appropriately, as well as passing it
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on to callbacks.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>takeMsg</term>
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<listitem>
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<para>
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If the <varname>Irc</varname> object has a message
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it's ready to send to the server, this will return
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it. Otherwise, it will return
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<literal>None</literal>.
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</para>
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</listitem>
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</varlistentry>
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<!--<note>
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<para>
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The next several methods are of far more marginal
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utility. But someone may need them, so they're
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documented here.
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</para>
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</note>-->
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<varlistentry>
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<term>addCallback</term>
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<listitem>
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<para>
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Takes a callback to add to the list of callbacks
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in the <varname>Irc</varname> object. See the
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interface for <varname>IrcCallback</varname> for
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more information.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>getCallback</term>
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<listitem>
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<para>
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Gets a callback by name, if it is in the
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<varname>Irc</varname> object's list of callbacks.
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If it it isn't, returns <literal>None</literal>.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>removeCallback</term>
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<listitem>
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<para>
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Removes a callback by name. Returns a list of the
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callbacks removed (since it is technically
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possible to have multiple callbacks with the same
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name. This list may be empty.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>__init__</term>
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<listitem>
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<para>
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Requires a <varname>nick</varname>. Optional
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arguments include <varname>user</varname> and
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<varname>ident</varname>, which default to the
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nick given, <varname>password</varname>, which
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defaults to the empty password, and
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<varname>callbacks</varname>, a list of callbacks
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(which defaults to nothing, an empty list).
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>reset</term>
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<listitem>
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<para>
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Resets the <varname>Irc</varname> object to its
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original state, as well as sends a
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<function>reset()</function> to every callbacks.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>die</term>
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<listitem>
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<para>
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Kills the IRC object and all its callbacks.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<variablelist>
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<title>Interesting attributes</title>
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<varlistentry>
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<term>nick</term>
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<listitem>
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<para>
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The current nick of the bot.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>prefix</term>
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<listitem>
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<para>
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The current prefix of the bot.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>server</term>
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<listitem>
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<para>
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The current server the bot is connected to.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>network</term>
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<listitem>
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<para>
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The current network name the bot is connected to.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>afterConnect</term>
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<listitem>
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<para>
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<literal>False</literal> until the bot has
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received a command sent after the connection is
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finished – 376, 377, or 422.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>state</term>
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<listitem>
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<para>
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An <varname>IrcState</varname> object for this
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particular connection. See the interface for the
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<varname>IrcState</varname> object for more
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information.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
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<sect2>
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<title><classname>irclib.IrcCallback</classname></title>
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<variablelist>
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<title>Interesting Methods</title>
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<varlistentry>
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<term>name</term>
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<listitem>
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<para>
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Returns the name of the callback. The default
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implementation simply returns the name of the
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class.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>__call__</term>
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<listitem>
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<para>
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Called by the <varname>Irc</varname> object with
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itself and the message whenever a message is fed
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to the <varname>Irc</varname> object. Nothing is
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done with the return value.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>inFilter</term>
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<listitem>
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<para>
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Called by the <varname>Irc</varname> object with
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itself and the message whenever a message is fed
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to the <varname>Irc</varname> object. The return
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value should be an <varname>IrcMsg</varname>
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object to be passed to the next callback in the
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<varname>Irc</varname>'s list of callbacks. If
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<literal>None</literal> is returned, all
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processing stops. This gives callbacks an
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oppurtunity to "filter" incoming messages before
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general callbacks are given them.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>outFilter</term>
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<listitem>
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<para>
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Basically equivalent to
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<varname>inFilter</varname>, except instead of
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being called on messages as they enter the
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<varname>Irc</varname> object, it's called on
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messages as they leave the <varname>Irc</varname>
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object.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>die</term>
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<listitem>
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<para>
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Called when the parent <varname>Irc</varname> is
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told to die. This gives callbacks an oppurtunity
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to close open files, network connections, or
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databases before they're deleted.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>reset</term>
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<listitem>
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<para>
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Called when the parent <varname>Irc</varname> is
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told to reset (which is generally when
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reconnecting to the server). Most callbacks don't
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need to define this.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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<variablelist>
|
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<title>Interesting attributes</title>
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<varlistentry>
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<term>priority</term>
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<listitem>
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<para>
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Determines the priority of the callback in the
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<varname>Irc</varname> object's list of callbacks.
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Defaults to <literal>99</literal>; the valid range
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includes <literal>0</literal> through
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<literal>sys.maxint-1</literal> (don't use
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<literal>sys.maxint</literal> itself, that's
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reserved for the <varname>Misc</varname> plugin).
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The lower the number, the higher the priority.
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High priority callbacks are called earlier in the
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<varname>inFilter</varname> cycle, earlier in the
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<varname>__call__</varname> cycle, and later in
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the <varname>outFilter</varname> cycle –
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basically, they're given the first chances on the
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way in and the last chances on the way out.
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</para>
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</listitem>
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</varlistentry>
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</variablelist>
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</sect2>
|
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<sect2>
|
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<title><classname>callbacks.IrcObjectProxy</classname></title>
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<para>
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<classname>IrcObjectProxy</classname> is a proxy for an
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<classname>irclib.Irc</classname> instance that serves to
|
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provide a much fuller interface for handling replies and
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errors as well as to handle the nesting of commands. This is
|
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what you'll be dealing with almost all the time when writing
|
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commands; when writing <function>doCommand</function> methods
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(the kind you read about in the interface description of
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<classname>irclib.IrcCallback</classname>) you'll be dealing
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with plain old <classname>irclib.Irc</classname> objects.
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</para>
|
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<variablelist>
|
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<title>Interesting methods</title>
|
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<varlistentry>
|
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<term>reply</term>
|
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<listitem>
|
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<para>
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Called to reply to the current message with a
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string that is to be the reply. Uses the
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<function>queueMsg</function> command discussed in
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the <classname>irclib.Irc</classname> section.
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</para>
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</listitem>
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</varlistentry>
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<varlistentry>
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<term>replySuccess</term>
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<term>replyError</term>
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<listitem>
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<para>
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These reply with the configured responses for
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success and generic error, respectively. If an
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additional argument is given, it's (intelligently)
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appended to the generic message to be more
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specific.
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</para>
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</listitem>
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</varlistentry>
|
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<varlistentry>
|
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<term>error</term>
|
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<listitem>
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<para>
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Called to send an error reply to the current
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message; not only does the response indicate an
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error, but commands that error out break the
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nested-command chain, which is generally useful
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for not confusing the user :)
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</para>
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</listitem>
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</varlistentry>
|
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<varlistentry>
|
|
<term>errorNoCapability</term>
|
|
<listitem>
|
|
<para>
|
|
Like <function>error</function>, except it accepts
|
|
the capability that's missing and integrates it
|
|
into the configured error message for such things.
|
|
Also accepts an additional string for a more
|
|
descriptive message, if that's what you want.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>errorPossibleBug</term>
|
|
<term>errorNotRegistered</term>
|
|
<term>errorNoUser</term>
|
|
<term>errorRequiresPrivacy</term>
|
|
<listitem>
|
|
<para>
|
|
These methods reply with the appropriate
|
|
configured error message for the conditions in
|
|
their names; they all take an additional arguments
|
|
to be more specific about the conditions they
|
|
indicate, but this argument is very rarely
|
|
necessary.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
<varlistentry>
|
|
<term>getRealIrc</term>
|
|
<listitem>
|
|
<para>
|
|
Returns the actual <classname>Irc</classname>
|
|
object being proxied for.
|
|
</para>
|
|
</listitem>
|
|
</varlistentry>
|
|
</variablelist>
|
|
</sect2>
|
|
</sect1>
|
|
</article>
|
|
|
|
|