Running Perl scripts
 --------------------

First you'll need to have Perl support on. By default irssi compiles
Perl as a module, so /LOAD perl probably helps. After that you can run
scripts with /RUN script (you don't need to give the .pl extension). If
/RUN complains about "unknown command", you don't have Perl module
loaded, or maybe Perl support wasn't compiled at all.

Place new scripts to ~/.irssi/scripts/ or /usr/local/lib/irssi/scripts/
directory. Scripts in ~/.irssi/scripts/autorun/ directory are
automatically run at startup.

Using /PERLFLUSH closes and reopens the perl interpreter removing all
Perl scripts from memory. There's currently no way to unload a single
Perl script (/SCRIPT REMOVE will probably work soon). You can however
run same script multiple times, and irssi will remove the old version
from memory before running the new version.


 Irssi's signals
 ---------------

Irssi is pretty much based on sending and handling different signals.
Like when you receive a message from server, say

  :nick!user@there.org PRIVMSG you :blahblah

Irssi will first send a signal:

  "server incoming", SERVER_REC, "nick!user@there PRIVMSG ..."

You probably don't want to use this signal. Default handler for this
signal interprets the header and sends a signal:

  "server event", SERVER_REC, "PRIVMSG ...", "nick", "user@there.org"

You probably don't want to use this either, since this signal's default
handler parses the event string and sends a signal:

  "event privmsg", SERVER_REC, "you :blahblah", "nick", "user@there.org"

You can at any point grab the signal, do whatever you want to do with
it and optionally stop it from going any further by calling
Irssi::signal_stop();

For example:

  sub event_privmsg {
    # $data = "nick/#channel :text"
    my ($server, $data, $nick, $address) = @_;
    my ($target, $text) = split(/ :/, $data, 2);

    Irssi::signal_stop() if ($text =~ /free.*porn/ || $nick =~ /idiot/);
  }

Irssi::signal_add("event privmsg", "event_privmsg")

This will hide all public or private messages that match the regexp
"free.*porn" or the sender's nick contain the word "idiot". Yes, you
could use /IGNORE instead for both of these :)

You can also use signal_add_last() if you wish to let the Irssi's internal
functions be run before yours.

A list of signals that irssi send can be found from signals.txt file.


 Message levels
 --------------

Several functions expect message levels. They're used to roughly
classify messages. They're used by a lot of things including logging,
ignoring, highlighting, etc. so you should use as good level as
possible. It's possible to have several levels in one message, like
ACTIONS+PUBLIC or ACTIONS+MSGS.

Here's all the levels that irssi supports currently:

  CRAP, MSGS, PUBLIC, NOTICES, SNOTES, CTCPS, ACTIONS, JOINS, PARTS
  QUITS, KICKS, MODES, TOPICS, WALLOPS, INVITES, NICKS, DCC, DCCMSGS,
  CLIENTNOTICE, CLIENTCRAP, CLIENTERROR

And a few special ones that could be included with the levels above:

  HILIGHT - message is highlighted
  NOHILIGHT - don't check highlighting from message
  NO_ACT - don't trigger channel activity when printing this message
  NEVER - never ignore or log this message (not a good idea usually)

You can use them with a MSGLEVEL_ prefix, for example:

  $server->print("#channel", 'Hello, world', MSGLEVEL_CLIENTCRAP);

Writes text to #channel window with CLIENTCRAP level.


 Functions that you can use in Irssi's Perl scripts
 --------------------------------------------------

If there's a "Xxxx::" text before the command, it means that it belongs to
that package. Like "Server::command" means that you should either call it as
  Irssi::Server::command($server, $cmd);
or more easily:
  $server->command($cmd);

Commands that don't have the Xxxx prefix are called as Irssi::command();

Information from most objects can be fetched with $object->{data}, for
example current nick in server could be read with $server->{nick}. List
of all the information that are in objects are in "Object->{}" sections
below.

Commands are split in two groups, generic ones that could be used with
any chat protocol, and IRC specific commands. If you want to use IRC
specific commands, or use IRC specific ->{data} in your scripts, you'll
need to add "use Irssi::Irc" to your scripts. IRC specific commands are
listed after the generic ones.


 *** General

Window active_win() - return active window
Server active_server() - return server in active window

windows() - return list of all windows
servers() - return list of all servers
reconnects() - return list of all server reconnections
channels() - return list of all channels
queries() - return list of all queries
commands() - return list of all commands
logs() - return list of all log files
ignores() - returns list of all ignores

Server::channels() - return list of channels in server
Server::queries() - return list of queries in server

print(str[, level])
Server::print(channel, str[, level])
Window::print(str[, level])
Windowitem::print(str[, level])
  Print `str'. Default level is MSGLEVEL_CLIENTNOTICE.

command(cmd)
Server::command(cmd)
Window::command(cmd)
Windowitem::command(cmd)
  Send a command `cmd' (in current channel). This will work just as if you
  had typed `cmd' in command line, so you'll need to use /COMMANDS or the
  text will be sent to the channel.

  Just like above, except different calling method.


 *** Themes

You can have user configurable texts in scripts that work just like
irssi's internal texts that can be changed in themes.

First you'll have to register the formats:

Irssi::theme_register([
  'format_name', '{hilight my perl format!}',
  'format2', 'testing.. nick = $0, channel = $1'
]);

Printing happens with one of the functions:

printformat(level, format, ...)
Window::printformat(level, format, ...)
Server::printformat(target, level, format, ...)
Windowitem::printformat(level, format, ...)

For example:

  $channel->printformat(MSGLEVEL_CRAP, 'format2',
		        'nick', $channel->{name});


 *** Settings

settings_get_str(key)
settings_get_int(key)
settings_get_bool(key)
  Return value for setting.

settings_add_str(section, key, def)
settings_add_int(section, key, def)
settings_add_bool(section, key, def)
  Create new setting.

settings_remove(key)
  Remove a setting.


 *** Signals

signal_emit(signal, ...)
  Send signal `signal'. You can give 6 parameters at maximum.

signal_add(signal, func)
  Bind `signal' to function `func'.

signal_add_first(signal, func)
  Bind `signal' to function `func'. Call `func' as soon as possible.

signal_add_last(signal, func)
  Bind `signal' to function `func'. Call `func' as late as possible.

signal_remove(signal, func)
  Unbind `signal' from function `func'.

signal_stop()
  Stop the signal that's currently being emitted.

signal_stop_by_name(signal)
  Stop the signal with name `signal' that's currently being emitted.


  *** timeouts / IO listener

timeout_add(msecs, func, data)
  Call `func' every `msecs' milliseconds (1000 = 1 second) with
  parameter `data'. Returns tag which can be used to stop the timeout.

timeout_remove(tag)
  Remove timeout with tag.

input_add(source, condition, func, data)
  Call `func' with parameter `data' when specified IO happens.
  `source' is the file handle that is being listened. `condition' can
  be INPUT_READ, INPUT_WRITE or both. Returns tag which can be used to
  remove the listener.

input_remove(tag)
  Remove listener with tag.


 *** Message levels

level2bits(level)
  Level string -> number

bits2level(bits)
  Level number -> string

combine_level(level, str)
  Combine level number to level string ("+level -level").
  Return new level number.


 *** Commands

Command->{}:
  cmd - Command name
  category - Category

command_bind(cmd, func[, category])
  Bind command `cmd' to call function `func'. `category' is the
  category where the command is displayed in /HELP.

command_unbind(cmd, func)
  Unbind command `cmd' from function 'func.


 *** Windows

Window::items()
  Return a list of items in window.

Window
window_create(automatic)
Windowitem::window_create(automatic)
  Create a new window.

Window::destroy()
  Destroy the window.

Irssi::Window
Windowitem::window()
  Returns parent window for window item.

Window
window_find_name(name)
  Find window with name.

Window
window_find_refnum(refnum)
  Find window with reference number.

Window
window_find_level(level)
Server::window_find_level(level)
  Find window with level.

Window
window_find_closest(name, level)
Server::window_find_closest(name, level)
  Find window that matches best to given arguments. `name' can be either
  window name or name of one of the window items.

Window
window_find_item(name)
Server::window_find_item(name)
  Find window which contains window item with specified name/server.

Windowitem
window_item_find(name)
Server::window_item_find(name)
Window::item_find(server, name)
  Find window item that matches best to given arguments.

window_refnum_prev(refnum, wrap)
window_refnum_next(refnum, wrap)
  Return refnum for window that's previous/next in windows list.

windows_refnum_last()
  Return refnum for last window.

Window::item_add(item, automatic)
Window::item_remove(item)
Window::item_destroy(item)
  Add/remove/destroy window item

Window::set_active()
  Set window active.

Window::change_server(server)
Window::set_refnum(refnum)
Window::set_name(name)
Window::set_level(level)
  Change server/refnum/name/level in window.

Windowitem::set_active()
  Change window item active in parent window.

Window::item_prev()
Window::item_next()
  Change to previous/next window item.

Windowitem::change_server(server)
  Change server in window item.

Windowitem::is_active()
  Returns 1 if window item is the active item in parent window.

Window::get_active_name()
  Return active item's name, or if none is active, window's name


 *** Server Connects

Connect->{}
  type - "SERVER CONNECT" text
  chat_type - String ID of chat protocol, for example "IRC"

  address - Address where we connected (irc.blah.org)
  port - Port where we connected
  chatnet - Chat network

  password - Password we used in connection.
  wanted_nick - Nick which we would prefer to use
  username - User name
  realname - Real name

Connect
server_create_conn(address[, port=6667[, password=''[, nick=''[, channels='']]]])
  Create new server connection.


 *** Server functions

Server->{}
  type - "SERVER" text
  chat_type - String ID of chat protocol, for example "IRC"

  (..contains all the same data as Connect above..)

  connect_time - Time when connect() to server finished
  real_connect_time - Time when server sent "connected" message

  tag - Unique server tag
  nick - Current nick

  connected - Is connection finished? 1|0
  connection_lost - Did we lose the connection (1) or was
                    the connection just /DISCONNECTed (0)

  rawlog - Rawlog object for the server

  version - Server version
  last_invite - Last channel we were invited to
  server_operator - Are we server operator (IRC op) 1|0
  usermode_away - Are we marked as away? 1|0
  away_reason - Away reason message
  banned - Were we banned from this server? 1|0

Server
Connect::connect()
  Connect to server.

Server::disconnect()
  Disconnect from server.

Server
server_find_tag(tag)
  Find server with tag

Server
server_find_chatnet(chatnet)
  Find first server that is in `chatnet'

Server::isnickflag(flag)
  Returns 1 if flag is a nick mode flag (@, + or % in IRC)

Server::ischannel(data)
  Returns 1 if start of `data' seems to mean channel.

Server::get_nick_flags()
  Returns nick flag characters in order: op, voice, halfop ("@+%" in IRC).

Server::send_message(target, msg)
  Sends a message to nick/channel.


 *** Server reconnections

Reconnect->{}
  type - "RECONNECT" text
  chat_type - String ID of chat protocol, for example "IRC"

  (..contains all the same data as Connect above..)

  tag - Unique numeric tag
  next_connect - Unix time stamp when the next connection occurs


 *** Server redirections

WARNING: It's easy to mess up the Irssi's internal server expectations
with these commands!

This is a powerful feature of Irssi that I haven't seen in other IRC
clients. You can EASILY grab the server's reply for a command you send
to server without any horrible kludges.

Server::redirect_init(command, last, ...)
  Initialize redirection for specified command. This needs to be done
  only once. Irssi already initializes commands WHOIS, WHO, LIST,
  USERHOST and ISON.

  `command' is the whole name of the signal, like "command whois".
  `last' specifies how many of the items in `...' is considered as the
  "last event" from the command.

  Example:

  $server->redirection_init('command who',
        2,             # 2 first events will finish the command
        'event 401',   # unknown nick (finished)
        'event 315',   # end of who (finished)
        'event 352');  # who line (wait..)

Server::redirect_event(arg, last, ...)
  Add redirection. `arg' is a space separated list of arguments that should
  match before Irssi will redirect the event (think of /WHOIS nick nick and
  doing another to different nick immediately after it, there's no way of
  knowing which will return first. so, arg would be in this case 'nick').

  `last' specifies how many of the following events are considered as
  "last event" from command - just like in redirect_init().

  `...' is `event, signal, argpos, ...`, where
  `event' is the event we're waiting from server.
  `signal' is the signal we will send after receiving the event. It should
           always start with 'redir ' so that Irssi's perl handler knows to
           send correct arguments to signal handler.
  `argpos' is the argument position in event's data or -1 if it
           should be ignored.

  Example:
  $server->send_raw('WHOIS :cras');
  $server->redirect_event('cras', 2,
        "event 318", "redir end_of_whois", 1,
        "event 402", "redir no_such_server", 1,
        "event 401", "redir no_such_nick", 1,
        "event 311", "redir whois", 1,
        "event 301", "redir whois_away", 1,
        "event 312", "redir whois_server", 1,
        "event 313", "redir whois_oper", 1,
        "event 317", "redir whois_idle", 1,
        "event 319", "redir whois_channels", 1);

  In the 402-case we tried "/WHOIS nick nick" but nick didn't exist. If
  you need to handle "/WHOIS server nick" situation, you should put both
  to arg with "server nick".

Server::redirect_single_event(arg, last, group, event, signal, argpos)
  Same as redirect_event() except you can set it up in pieces.
  If `group' is 0, it will create new group and return it's id.


 *** Window items

Windowitem->{}
  type - Type of the window item, for example "CHANNEL" or "QUERY"
  chat_type - String ID of chat protocol, for example "IRC"

  server - Active server for item
  name - Name of the item

  createtime - Time the window item was created
  new_data - 0=no new data, 1=text, 2=msg, 3=highlighted text
  last_color - Color of the last highlighted text


 *** Channels

Channel->{}
  type - "CHANNEL" text
  chat_type - String ID of chat protocol, for example "IRC"

  (..contains all the same data as Windowitem above..)

  topic - Chanenl topic

  no_modes - Channel is modeless
  mode - Channel mode
  limit - Max. users in channel (+l mode)
  key - Channel key (password)

  chanop - You are channel operator
  names_got - /NAMES list has been received
  wholist - /WHO list has been received
  synced - Channel is fully synchronized

  joined - JOIN event for this channel has been received
  left - You just left the channel (for "channel destroyed" event)
  kicked - You was just kicked out of the channel (for
           "channel destroyed" event)

Server::channels_join(channels, automatic)
  Join to channels in server. `channels' may also contain keys for
  channels just like with /JOIN command. `automatic' specifies if this
  channel was joined "automatically" or if it was joined because join
  was requested by user. If channel join is "automatic", irssi doesn't
  jump to the window where the channel was joined.

Channel
Server::channel_create(name, automatic)
  Create new channel.

Channel
channel_create(chat_type, name, automatic)
  Create new channel with specified chat type.
  FIXME: should this be removed? is this useful for anything?

Channel::destroy()
  Destroy channel.

Channel
channel_find(channel)
  Find channel from any server.

Channel
Server::channel_find(channel)
  Find channel from specified server.


 *** Nick list

Nick->{}
  type - "NICK" text
  chat_type - String ID of chat protocol, for example "IRC"

  nick - Plain nick
  host - Host address
  realname - Real name
  hops - Hop count to the server the nick is using

  gone, serverop - User status, 1 or 0
  op, voice, halfop - Channel status, 1 or 0

  last_check - timestamp when last checked gone/ircop status.
  send_massjoin - Waiting to be sent in a "massjoin" signal, 1 or 0

Nick
Channel::nick_insert(nick, op, voice, send_massjoin)
  Add nick to nicklist.

Channel::nick_remove(nick)
  Remove nick from nicklist.

Nick
Channel::nick_find(mask)
  Find nick from nicklist.

Channel::nicks(channel)
  Return a list of all nicks in channel.

Server::nicks_get_same(nick)
  Return all nick objects in all channels in server. List is in format:
  Channel, Nick, Channel, ...


 *** Queries

Query->{}
  type - "QUERY" text
  chat_type - String ID of chat protocol, for example "IRC"

  (..contains all the same data as Windowitem above..)

  address - Host address of the queries nick
  server_tag - Server tag used for this nick (doesn't get erased if
               server gets disconnected)
  unwanted - 1 if the other side closed or some error occured (DCC chats)

Query
query_create(chat_type, server_tag, nick, automatic)
  Create a new query.

Query::destroy()
  Destroy the query.

Query::query_change_server(server)
  Change the active server of the query.

Query
query_find(nick)
  Find query from any server.

Query
Server::query_find(nick)
  Find query from specified server.


 *** Masks

You should use the Server version of the function if possible, since
with different chat protocols the mask matching could be different.

mask_match(mask, nick, user, host)
Server::mask_match(mask, nick, user, host)
  Return 1 if `mask' matches nick!user@host.

mask_match_address(mask, nick, address)
Server::mask_match_address(mask, nick, address)
  Return 1 if `mask' matches nick!address.

masks_match(masks, nick, address)
Server::masks_match(masks, nick, address)
  Return 1 if any mask in the `masks' (string separated with spaces)
  matches nick!address.


 *** Rawlog

Rawlog
rawlog_create()
  Create a new rawlog.

Rawlog::destroy()
  Destroy the rawlog.

rawlog_set_size(lines)
  Set the default rawlog size for new rawlogs.

Rawlog::open(filename)
  Start logging new messages in rawlog to specified file.

Rawlog::close()
  Stop logging to file.

Rawlog::save(filename)
  Save the current rawlog history to specified file.

Rawlog::input(str)
  Send `str' to raw log as input text.

Rawlog::output(str)
  Send `str' to raw log as output text.

Rawlog::redirect(str)
  Send `str' to raw log as redirection text.


 *** Logging

Log->{}
  fname - Log file name
  opened - Log file is open
  level - Log only these levels
  last - Timestamp when last message was written
  autoopen - Automatically open log at startup
  failed - Opening log failed last time
  temp - Log isn't saved to config file
  items - List of log items

Logitem->{}
  type - 0=target, 1=window refnum
  name - Name
  servertag - Server tag

Log
log_create_rec(fname, level)
  Create log file.

Log::update()
  Add log to list of logs / save changes to config file.

Log
log_find(fname)
  Find log with file name.

Log::close()
  Destroy log file.

Log::start_logging()
  Open log file and start logging.

Log::stop_logging()
  Close log file.

Log::item_add(type, name, server)
  Add log item to log.

Log::item_destroy(item)
  Remove log item from log.

Logitem
Log::item_find(type, item, server)
  Find item from log.


 *** Ignores

Ignore->{}
  mask - Ignore mask
  servertag - Ignore only in server
  channels - Ignore only in channels (list of names)
  pattern - Ignore text pattern

  level - Ignore level
  except_level - Ignore exception levels

  regexp - Regexp pattern matching
  fullword - Pattern matches only full words

ignore_add_rec(ignore)
  Add ignore record.

ignore_update_rec(ignore)
  Update ignore record in configuration

ignore_check(nick, host, channel, text, level)
Server::ignore_check(nick, host, channel, text, level)
  Return 1 if ignoring matched.


 ***
 *** IRC specific functions. All objects below this are prefixed with Irc::
 ***

 *** IRC servers

Irc::Server->{}
  (..contains all the same data as core Server object..)
  real_address - Address the IRC server gives
  usermode - User mode in server
  userhost - Your user host in server

Irc::Connect->{}
  (..contains all the same data as core Connect object..)
  alternate_nick - Alternate nick to use if default nick is taken.

Connect::connect()
  Connect to IRC server.

Server::get_channels(server)
  Return a string of all channels (and keys, if any have them) in server,
  like "#a,#b,#c,#d x,b_chan_key,x,x" or just "#e,#f,#g"

Server::send_raw(cmd)
  Send raw message to server, it will be flood protected so you
  don't need to worry about it.

Server::send_raw_now(cmd)
  Send raw message to server immediately without flood protection.

Server::send_raw_split(cmd, nickarg, max_nicks)
  Split the `cmd' into several commands so `nickarg' argument has only
  `max_nicks' number of nicks.

  Example:
    $server->send_raw_split("KICK #channel nick1,nick2,nick3 :byebye", 2, 2);

  Irssi will send commands "KICK #channel nick1,nick2 :byebye" and
  "KICK #channel nick3 :byebye" to server.

Server::ctcp_send_reply(data)
  Send CTCP reply. This will be "CTCP flood protected" so if there's too
  many CTCP requests in buffer, this reply might not get sent.


 *** IRC channels

Ban->{}
  ban - The ban
  setby - Nick of who set the ban
  time - Timestamp when ban was set

Channel
Server::channel_create(name, automatic)
  Create new channel.

Channel::bans()
  Return a list of bans in channel.

Channel::ebans()
  Return a list of ban exceptions in channel.

Channel::invites()
  Return invite list (+I) of channel.

Channel::ban_get_mask(nick)
  Get ban mask for `nick'.

Channel::banlist_add(ban, nick, time)
   Add a new ban to channel.

Channel::banlist_remove(ban)
   Remove a ban from channel.

Channel::banlist_exception_add(ban, nick, time)
   Add a new ban exception to channel.

Channel::banlist_exception_remove(ban)
   Remove a ban exception from channel.

Channel::invitelist_add(mask)
   Add a new invite mask to channel.

Channel::invitelist_remove(mask)
   Remove invite mask from channel.

modes_join(old, mode, channel)
  Add `mode' to `old' - return newly allocated mode. If `channel' is 1,
  we're parsing channel mode and we should try to join mode arguments too.


 *** DCC

Dcc->{}
  type - Type of the DCC: chat, send, get
  created - Time stamp when the DCC record was created

  server - Server where the DCC was initiated.
  nick - Other side's nick name.

  chat - Dcc chat record if the request came through DCC chat

  ircnet - IRC network where the DCC was initiated.
  mynick - Our nick to use in DCC chat.

  arg - Given argument .. file name usually
  file - The real file name which we use.

  addr - Other side's IP address.
  port - Port we're connecting in.

  size - File size
  transfd - Bytes transferred
  skipped - Bytes skipped from start (resuming file)
  starttime - Unix time stamp when the DCC transfer was started

dccs() - return list of all dcc connections

Dcc::destroy()
  Destroy DCC connection.

Dcc
dcc_find_item(type, nick, arg)
  Find DCC connection.

Dcc
dcc_find_by_port(nick, port)
  Find DCC connection by port.

Dcc
Windowitem::get_dcc(item)
  If `item' is a query of a =nick, return DCC chat record of nick.

Dcc::chat_send(data)
  Send `data' to dcc chat.

Server::dcc_ctcp_message(target, notice, msg)
Dcc::ctcp_message(target, notice, msg)
  Send a CTCP message/notify to target.


 *** Netsplits

Netsplit->{}
  nick - Nick
  address - Nick's host
  destroy - Timestamp when this record should be destroyed
  server - Netsplitserver object
  channels - list of channels (Netsplitchannel objects) the nick was in

Netsplitserver->{}
  server - The server nick was in
  destserver - The other server where split occured.
  count - Number of splits in server

Netsplitchannel->{}
  name - Channel name
  nick - Nick object

Netsplit
Server::netsplit_find(nick, address)
  Check if nick!address is on the other side of netsplit. Netsplit records
  are automatically removed after 30 minutes (current default)..

Nick
Server::netsplit_find_channel(nick, address, channel)
  Find nick record for nick!address in channel `channel'.


 *** Notify list

Notifylist->{}
  mask - Notify nick mask
  away_check - Notify away status changes
  idle_check_time - Notify when idle time is reset and idle was bigger
                    than this (seconds)
  ircnets - List of ircnets (strings) the notify is checked

notifies() - Return list of all notifies

Notifylist
notifylist_add(mask, ircnets, away_check, idle_check_time)
  Add new item to notify list.

notifylist_remove(mask)
  Remove item from notify list.

Notifylist
notifylist_find(mask, ircnet)
  Find notify.

Server
notifylist_ison(nick, serverlist)
  Check if `nick' is in IRC. `serverlist' is a space separated
  list of server tags. If it's empty string, all servers will be checked.

Server::notifylist_ison_server(nick)
  Check if `nick' is on IRC server.

Notifylist::ircnets_match(ircnet)
  Returns 1 if notify is checked in `ircnet'.


 *** Autoignoring

Autoignore->{}
  nick - Ignored nick
  timeleft - Seconds left to ignore
  level - Ignoring level number

Server::autoignore_add(nick, level)
  Add new autoignore.

Server::autoignore_remove(mask, level)
  Remove autoignore.