html/trigger.pl


   1 # trigger.pl - execute a command or replace text, triggered by an event in irssi
   2 # Do /TRIGGER HELP or look at http://wouter.coekaerts.be/irssi/ for help
   3 
   4 # Copyright (C) 2002-2006  Wouter Coekaerts <wouter@coekaerts.be>
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 2 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
  19 
  20 use strict;
  21 use Irssi 20020324 qw(command_bind command_runsub command signal_add_first signal_continue signal_stop signal_remove);
  22 use Text::ParseWords;
  23 use IO::File;
  24 use vars qw($VERSION %IRSSI);
  25 
  26 $VERSION = '1.0';
  27 %IRSSI = (
  28 	authors     => 'Wouter Coekaerts',
  29 	contact     => 'wouter@coekaerts.be',
  30 	name        => 'trigger',
  31 	description => 'execute a command or replace text, triggered by an event in irssi',
  32 	license     => 'GPLv2 or later',
  33 	url         => 'http://wouter.coekaerts.be/irssi/',
  34 	changed     => '$LastChangedDate: 2006-01-23 13:10:19 +0100 (Mon, 23 Jan 2006) $',
  35 );
  36 
  37 sub cmd_help {
  38 	Irssi::print (<<'SCRIPTHELP_EOF', MSGLEVEL_CLIENTCRAP);
  39 
  40 TRIGGER LIST
  41 TRIGGER SAVE
  42 TRIGGER RELOAD
  43 TRIGGER MOVE <number> <number>
  44 TRIGGER DELETE <number>
  45 TRIGGER CHANGE <number> ...
  46 TRIGGER ADD ...
  47 
  48 When to match:
  49 On which types of event to trigger:
  50      These are simply specified by -name_of_the_type
  51      The normal IRC event types are:
  52           publics, %|privmsgs, pubactions, privactions, pubnotices, privnotices, joins, parts, quits, kicks, topics, invites, nick_changes, dcc_msgs, dcc_actions, dcc_ctcps
  53           mode_channel: %|a mode on the (whole) channel (like +t, +i, +b)
  54           mode_nick: %|a mode on someone in the channel (like +o, +v)
  55      -all is an alias for all of those.
  56      Additionally, there is:
  57           rawin: %|raw text incoming from the server
  58           send_command: %|commands you give to irssi
  59           send_text: %|lines you type that aren't commands
  60           beep: %|when irssi beeps
  61           notify_join: %|someone in you notify list comes online
  62           notify_part: %|someone in your notify list goes offline
  63           notify_away: %|someone in your notify list goes away
  64           notify_unaway: %|someone in your notify list goes unaway
  65           notify_unidle: %|someone in your notify list stops idling
  66 
  67 Filters (conditions) the event has to satisfy. They all take one parameter.
  68 If you can give a list, seperate elements by space and use quotes around the list.
  69      -pattern: %|The message must match the given pattern. ? and * can be used as wildcards
  70      -regexp: %|The message must match the given regexp. (see man perlre)
  71        %|if -nocase is given as an option, the regexp or pattern is matched case insensitive
  72      -tags: %|The servertag must be in the given list of tags
  73      -channels: %|The event must be in one of the given list of channels.
  74                 Examples: %|-channels '#chan1 #chan2' or -channels 'IRCNet/#channel'
  75                           %|-channels 'EFNet/' means every channel on EFNet and is the same as -tags 'EFNet'
  76      -masks: %|The person who triggers it must match one of the given list of masks
  77      -hasmode: %|The person who triggers it must have the give mode
  78                Examples: %|'-o' means not opped, '+ov' means opped OR voiced, '-o&-v' means not opped AND not voiced
  79      -hasflag: %|Only trigger if if friends.pl (friends_shasta.pl) or people.pl is loaded and the person who triggers it has the given flag in the script (same syntax as -hasmode)
  80      -other_masks
  81      -other_hasmode
  82      -other_hasflag: %|Same as above but for the victim for kicks or mode_nick.
  83 
  84 What to do when it matches:
  85      -command: Execute the given Irssi-command
  86                 %|You are able to use $1, $2 and so on generated by your regexp pattern.
  87                 %|For multiple commands ; (or $;) can be used as seperator
  88                 %|The following variables are also expanded:
  89                    $T: %|Server tag
  90                    $C: %|Channel name
  91                    $N: %|Nickname of the person who triggered this command
  92                    $A: %|His address (foo@bar.com),
  93                    $I: %|His ident (foo)
  94                    $H: %|His hostname (bar.com)
  95                    $M: %|The complete message
  96                    ${other}: %|The victim for kicks or mode_nick
  97                    ${mode_type}: %|The type ('+' or '-') for a mode_channel or mode_nick
  98                    ${mode_char}: %|The mode char ('o' for ops, 'b' for ban,...)
  99                    ${mode_arg} : %|The argument to the mode (if there is one)
 100                 %|$\X, with X being one of the above expands (e.g. $\M), escapes all non-alphanumeric characters, so it can be used with /eval or /exec. Don't use /eval or /exec without this, it's not safe.
 101 
 102      -replace: %|replaces the matching part with the given replacement in the event (requires a -regexp or -pattern)
 103      -once: %|remove the trigger if it is triggered, so it only executes once and then is forgotten.
 104      -stop: %|stops the signal. It won't get displayed by Irssi. Like /IGNORE
 105      -debug: %|print some debugging info
 106 
 107 Other options:
 108      -disabled: %|Same as removing it, but keeps it in case you might need it later
 109      -name: %|Give the trigger a name. You can refer to the trigger with this name in add/del/change commands
 110 
 111 Examples:
 112  Knockout people who do a !list:
 113    /TRIGGER ADD %|-publics -channels "#channel1 #channel2" -nocase -regexp ^!list -command "KN $N This is not a warez channel!"
 114  React to !echo commands from people who are +o in your friends-script:
 115    /TRIGGER ADD %|-publics -regexp '^!echo (.*)' -hasflag '+o' -command 'say echo: $1'
 116  Ignore all non-ops on #channel:
 117    /TRIGGER ADD %|-publics -actions -channels "#channel" -hasmode '-o' -stop
 118  Send a mail to yourself every time a topic is changed:
 119    /TRIGGER ADD %|-topics -command 'exec echo $\N changed topic of $\C to: $\M | mail you@somewhere.com -s topic'
 120 
 121 
 122 Examples with -replace:
 123  %|Replace every occurence of shit with sh*t, case insensitive:
 124    /TRIGGER ADD %|-all -nocase -regexp shit -replace sh*t
 125  %|Strip all colorcodes from *!lamer@*:
 126    /TRIGGER ADD %|-all -masks *!lamer@* -regexp '\x03\d?\d?(,\d\d?)?|\x02|\x1f|\x16|\x06' -replace ''
 127  %|Never let *!bot1@foo.bar or *!bot2@foo.bar hilight you
 128  %|(this works by cutting your nick in 2 different parts, 'myn' and 'ick' here)
 129  %|you don't need to understand the -replace argument, just trust that it works if the 2 parts separately don't hilight:
 130    /TRIGGER ADD %|-all masks '*!bot1@foo.bar *!bot2@foo.bar' -regexp '(myn)(ick)' -nocase -replace '$1\x02\x02$2'
 131  %|Avoid being hilighted by !top10 in eggdrops with stats.mod (but show your nick in bold):
 132    /TRIGGER ADD %|-publics -regexp '(Top.0\(.*\): 1.*)(my)(nick)' -replace '$1\x02$2\x02\x02$3\x02'
 133  %|Convert a Windows-1252 Euro to an ISO-8859-15 Euro (same effect as euro.pl):
 134    /TRIGGER ADD %|-regexp '\x80' -replace '\xA4'
 135  %|Show tabs as spaces, not the inverted I (same effect as tab_stop.pl):
 136    /TRIGGER ADD %|-all -regexp '\t' -replace '    '
 137 SCRIPTHELP_EOF
 138 } # /
 139 
 140 my @triggers; # array of all triggers
 141 my %triggers_by_type; # hash mapping types on triggers of that type
 142 my $recursion_depth = 0;
 143 my $changed_since_last_save = 0;
 144 
 145 ###############
 146 ### formats ###
 147 ###############
 148 
 149 Irssi::theme_register([
 150 	'trigger_header' => 'Triggers:',
 151 	'trigger_line' => '%#$[-4]0 $1',
 152 	'trigger_added' => 'Trigger $0 added: $1',
 153 	'trigger_not_found' => 'Trigger {hilight $0} not found',
 154 	'trigger_saved' => 'Triggers saved to $0',
 155 	'trigger_loaded' => 'Triggers loaded from $0'
 156 ]);
 157 
 158 #########################################
 159 ### catch the signals & do your thing ###
 160 #########################################
 161 
 162 # trigger types with a message and a channel
 163 my @allchanmsg_types = qw(publics pubactions pubnotices pubctcps pubctcpreplies parts quits kicks topics);
 164 # trigger types with a message
 165 my @allmsg_types = (@allchanmsg_types, qw(privmsgs privactions privnotices privctcps privctcpreplies dcc_msgs dcc_actions dcc_ctcps));
 166 # trigger types with a channel
 167 my @allchan_types = (@allchanmsg_types, qw(mode_channel mode_nick joins invites));
 168 # trigger types in -all
 169 my @all_types = (@allmsg_types, qw(mode_channel mode_nick joins invites nick_changes));
 170 # trigger types with a server
 171 my @all_server_types = (@all_types, qw(rawin notify_join notify_part notify_away notify_unaway notify_unidle));
 172 # all trigger types
 173 my @trigger_types = (@all_server_types, qw(send_command send_text beep));
 174 #trigger types that are not in -all
 175 #my @notall_types = grep {my $a=$_; return (!grep {$_ eq $a} @all_types);} @trigger_types;
 176 my @notall_types = qw(rawin notify_join notify_part notify_away notify_unaway notify_unidle send_command send_text beep);
 177 
 178 my @signals = (
 179 # "message public", SERVER_REC, char *msg, char *nick, char *address, char *target
 180 {
 181 	'types' => ['publics'],
 182 	'signal' => 'message public',
 183 	'sub' => sub {check_signal_message(\@_,1,$_[0],$_[4],$_[2],$_[3],'publics');},
 184 },
 185 # "message private", SERVER_REC, char *msg, char *nick, char *address
 186 {
 187 	'types' => ['privmsgs'],
 188 	'signal' => 'message private',
 189 	'sub' => sub {check_signal_message(\@_,1,$_[0],undef,$_[2],$_[3],'privmsgs');},
 190 },
 191 # "message irc action", SERVER_REC, char *msg, char *nick, char *address, char *target
 192 {
 193 	'types' => ['privactions','pubactions'],
 194 	'signal' => 'message irc action',
 195 	'sub' => sub {
 196 		if ($_[4] eq $_[0]->{nick}) {
 197 			check_signal_message(\@_,1,$_[0],undef,$_[2],$_[3],'privactions');
 198 		} else {
 199 			check_signal_message(\@_,1,$_[0],$_[4],$_[2],$_[3],'pubactions');
 200 		}
 201 	},
 202 },
 203 # "message irc notice", SERVER_REC, char *msg, char *nick, char *address, char *target
 204 {
 205 	'types' => ['privnotices','pubnotices'],
 206 	'signal' => 'message irc notice',
 207 	'sub' => sub {
 208 		if ($_[4] eq $_[0]->{nick}) {
 209 			check_signal_message(\@_,1,$_[0],undef,$_[2],$_[3],'privnotices');
 210 		} else {
 211 			check_signal_message(\@_,1,$_[0],$_[4],$_[2],$_[3],'pubnotices');
 212 		}
 213 	}
 214 },
 215 # "message join", SERVER_REC, char *channel, char *nick, char *address
 216 {
 217 	'types' => ['joins'],
 218 	'signal' => 'message join',
 219 	'sub' => sub {check_signal_message(\@_,-1,$_[0],$_[1],$_[2],$_[3],'joins');}
 220 },
 221 # "message part", SERVER_REC, char *channel, char *nick, char *address, char *reason
 222 {
 223 	'types' => ['parts'],
 224 	'signal' => 'message part',
 225 	'sub' => sub {check_signal_message(\@_,4,$_[0],$_[1],$_[2],$_[3],'parts');}
 226 },
 227 # "message quit", SERVER_REC, char *nick, char *address, char *reason
 228 {
 229 	'types' => ['quits'],
 230 	'signal' => 'message quit',
 231 	'sub' => sub {check_signal_message(\@_,3,$_[0],undef,$_[1],$_[2],'quits');}
 232 },
 233 # "message kick", SERVER_REC, char *channel, char *nick, char *kicker, char *address, char *reason
 234 {
 235 	'types' => ['kicks'],
 236 	'signal' => 'message kick',
 237 	'sub' => sub {check_signal_message(\@_,5,$_[0],$_[1],$_[3],$_[4],'kicks',{'other'=>$_[2]});}
 238 },
 239 # "message topic", SERVER_REC, char *channel, char *topic, char *nick, char *address
 240 {
 241 	'types' => ['topics'],
 242 	'signal' => 'message topic',
 243 	'sub' => sub {check_signal_message(\@_,2,$_[0],$_[1],$_[3],$_[4],'topics');}
 244 },
 245 # "message invite", SERVER_REC, char *channel, char *nick, char *address
 246 {
 247 	'types' => ['invites'],
 248 	'signal' => 'message invite',
 249 	'sub' => sub {check_signal_message(\@_,-1,$_[0],$_[1],$_[2],$_[3],'invites');}
 250 },
 251 # "message nick", SERVER_REC, char *newnick, char *oldnick, char *address
 252 {
 253 	'types' => ['nick_changes'],
 254 	'signal' => 'message nick',
 255 	'sub' => sub {check_signal_message(\@_,-1,$_[0],undef,$_[1],$_[3],'nick_changes');}
 256 },
 257 # "message dcc", DCC_REC *dcc, char *msg
 258 {
 259 	'types' => ['dcc_msgs'],
 260 	'signal' => 'message dcc',
 261 	'sub' => sub {check_signal_message(\@_,1,$_[0]->{'server'},undef,$_[0]->{'nick'},undef,'dcc_msgs');
 262 	}
 263 },
 264 # "message dcc action", DCC_REC *dcc, char *msg
 265 {
 266 	'types' => ['dcc_actions'],
 267 	'signal' => 'message dcc action',
 268 	'sub' => sub {check_signal_message(\@_,1,$_[0]->{'server'},undef,$_[0]->{'nick'},undef,'dcc_actions');}
 269 },
 270 # "message dcc ctcp", DCC_REC *dcc, char *cmd, char *data
 271 {
 272 	'types' => ['dcc_ctcps'],
 273 	'signal' => 'message dcc ctcp',
 274 	'sub' => sub {check_signal_message(\@_,1,$_[0]->{'server'},undef,$_[0]->{'nick'},undef,'dcc_ctcps');}
 275 },
 276 # "server incoming", SERVER_REC, char *data
 277 {
 278 	'types' => ['rawin'],
 279 	'signal' => 'server incoming',
 280 	'sub' => sub {check_signal_message(\@_,1,$_[0],undef,undef,undef,'rawin');}
 281 },
 282 # "send command", char *args, SERVER_REC, WI_ITEM_REC
 283 {
 284 	'types' => ['send_command'],
 285 	'signal' => 'send command',
 286 	'sub' => sub {
 287 		sig_send_text_or_command(\@_,1);
 288 	}
 289 },
 290 # "send text", char *line, SERVER_REC, WI_ITEM_REC
 291 {
 292 	'types' => ['send_text'],
 293 	'signal' => 'send text',
 294 	'sub' => sub {
 295 		sig_send_text_or_command(\@_,0);
 296 	}
 297 },
 298 # "beep"
 299 {
 300 	'types' => ['beep'],
 301 	'signal' => 'beep',
 302 	'sub' => sub {check_signal_message(\@_,-1,undef,undef,undef,undef,'beep');}
 303 },
 304 # "event "<cmd>, SERVER_REC, char *args, char *sender_nick, char *sender_address
 305 {
 306 	'types' => ['mode_channel', 'mode_nick'],
 307 	'signal' => 'event mode',
 308 	'sub' => sub {
 309 		my ($server, $event_args, $nickname, $address) = @_;
 310 		my ($target, $modes, $modeargs) = split(/ /, $event_args, 3);
 311 		return if (!$server->ischannel($target));
 312 		my (@modeargs) = split(/ /,$modeargs);
 313 		my ($pos, $type, $event_type, $arg) = (0, '+');
 314 		foreach my $char (split(//,$modes)) {
 315 			if ($char eq "+" || $char eq "-") {
 316 				$type = $char;
 317 			} else {
 318 				if ($char =~ /[Oovh]/) { # mode_nick
 319 					$event_type = 'mode_nick';
 320 					$arg = $modeargs[$pos++];
 321 				} elsif ($char =~ /[beIqdk]/ || ( $char =~ /[lfJ]/ && $type eq '+')) { # chan_mode with arg
 322 					$event_type = 'mode_channel';
 323 					$arg = $modeargs[$pos++];
 324 				} else { # chan_mode without arg
 325 					$event_type = 'mode_channel';
 326 					$arg = undef;
 327 				}
 328 				check_signal_message(\@_,-1,$server,$target,$nickname,$address,$event_type,{
 329 					'mode_type' => $type,
 330 					'mode_char' => $char,
 331 					'mode_arg' => $arg,
 332 					'other' => ($event_type eq 'mode_nick') ? $arg : undef
 333 				});
 334 			}
 335 		}
 336 	}
 337 },
 338 # "notifylist joined", SERVER_REC, char *nick, char *user, char *host, char *realname, char *awaymsg
 339 {
 340 	'types' => ['notify_join'],
 341 	'signal' => 'notifylist joined',
 342 	'sub' => sub {check_signal_message(\@_, 5, $_[0], undef, $_[1], $_[2].'@'.$_[3], 'notify_join', {'realname' => $_[4]});}
 343 },
 344 {
 345 	'types' => ['notify_part'],
 346 	'signal' => 'notifylist left',
 347 	'sub' => sub {check_signal_message(\@_, 5, $_[0], undef, $_[1], $_[2].'@'.$_[3], 'notify_left', {'realname' => $_[4]});}
 348 },
 349 {
 350 	'types' => ['notify_unidle'],
 351 	'signal' => 'notifylist unidle',
 352 	'sub' => sub {check_signal_message(\@_, 5, $_[0], undef, $_[1], $_[2].'@'.$_[3], 'notify_unidle', {'realname' => $_[4]});}
 353 },
 354 {
 355 	'types' => ['notify_away', 'notify_unaway'],
 356 	'signal' => 'notifylist away changed',
 357 	'sub' => sub {check_signal_message(\@_, 5, $_[0], undef, $_[1], $_[2].'@'.$_[3], ($_[5] ? 'notify_away' : 'notify_unaway'), {'realname' => $_[4]});}
 358 },
 359 # "ctcp msg", SERVER_REC, char *args, char *nick, char *addr, char *target
 360 {
 361 	'types' => ['pubctcps', 'privctcps'],
 362 	'signal' => 'ctcp msg',
 363 	'sub' => sub {
 364 		my ($server, $args, $nick, $addr, $target) = @_;
 365 		if ($target eq $server->{'nick'}) {
 366 			check_signal_message(\@_, 1, $server, undef, $nick, $addr, 'privctcps');
 367 		} else {
 368 			check_signal_message(\@_, 1, $server, $target, $nick, $addr, 'pubctcps');
 369 		}
 370 	}
 371 },
 372 # "ctcp reply", SERVER_REC, char *args, char *nick, char *addr, char *target
 373 {
 374 	'types' => ['pubctcpreplies', 'privctcpreplies'],
 375 	'signal' => 'ctcp reply',
 376 	'sub' => sub {
 377 		my ($server, $args, $nick, $addr, $target) = @_;
 378 		if ($target eq $server->{'nick'}) {
 379 			check_signal_message(\@_, 1, $server, undef, $nick, $addr, 'privctcps');
 380 		} else {
 381 			check_signal_message(\@_, 1, $server, $target, $nick, $addr, 'pubctcps');
 382 		}
 383 	}
 384 }
 385 );
 386 
 387 sub sig_send_text_or_command {
 388 	my ($signal, $iscommand) = @_;
 389 	my ($line, $server, $item) = @$signal;
 390 	my ($channelname,$nickname,$address) = (undef,undef,undef);
 391 	if ($item && (ref($item) eq 'Irssi::Irc::Channel' || ref($item) eq 'Irssi::Silc::Channel')) {
 392 		$channelname = $item->{'name'};
 393 	} elsif ($item && ref($item) eq 'Irssi::Irc::Query') { # TODO Silc query ?
 394 		$nickname = $item->{'name'};
 395 		$address = $item->{'address'}
 396 	}
 397 	# TODO pass context also for non-channels (queries and other stuff)
 398 	check_signal_message($signal,0,$server,$channelname,$nickname,$address,$iscommand ? 'send_command' : 'send_text');
 399 
 400 }
 401 
 402 my %filters = (
 403 'tags' => {
 404 	'types' => \@all_server_types,
 405 	'sub' => sub {
 406 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 407 		
 408 		if (!defined($server)) {
 409 			return 0;
 410 		}
 411 		my $matches = 0;
 412 		foreach my $tag (split(/ /,$param)) {
 413 			if (lc($server->{'tag'}) eq lc($tag)) {
 414 				$matches = 1;
 415 				last;
 416 			}
 417 		}
 418 		return $matches;
 419 	}
 420 },
 421 'channels' => {
 422 	'types' => \@allchan_types,
 423 	'sub' => sub {
 424 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 425 		
 426 		if (!defined($channelname) || !defined($server)) {
 427 			return 0;
 428 		}
 429 		my $matches = 0;
 430 		foreach my $trigger_channel (split(/ /,$param)) {
 431 			if (lc($channelname) eq lc($trigger_channel)
 432 				|| lc($server->{'tag'}.'/'.$channelname) eq lc($trigger_channel)
 433 				|| lc($server->{'tag'}.'/') eq lc($trigger_channel)) {
 434 				$matches = 1;
 435 				last; # this channel matches, stop checking channels
 436 			}
 437 		}
 438 		return $matches;
 439 	}
 440 },
 441 'masks' => {
 442 	'types' => \@all_types,
 443 	'sub' => sub {
 444 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 445 		return  (defined($nickname) && defined($address) && defined($server) && $server->masks_match($param, $nickname, $address));
 446 	}
 447 },
 448 'other_masks' => {
 449 	'types' => ['kicks', 'mode_nick'],
 450 	'sub' => sub {
 451 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 452 		return 0 unless defined($extra->{'other'});
 453 		my $other_address = get_address($extra->{'other'}, $server, $channelname);
 454 		return defined($other_address) && $server->masks_match($param, $extra->{'other'}, $other_address);
 455 	}
 456 },
 457 'hasmode' => {
 458 	'types' => \@all_types,
 459 	'sub' => sub {
 460 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 461 		return hasmode($param, $nickname, $server, $channelname);
 462 	}
 463 },
 464 'other_hasmode' => {
 465 	'types' => ['kicks', 'mode_nick'],
 466 	'sub' => sub {
 467 		my ($param,$signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 468 		return defined($extra->{'other'}) && hasmode($param, $extra->{'other'}, $server, $channelname);
 469 	}
 470 },
 471 'hasflag' => {
 472 	'types' => \@all_types,
 473 	'sub' => sub {
 474 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 475 		return 0 unless defined($nickname) && defined($address) && defined($server);
 476 		my $flags = get_flags ($server->{'chatnet'},$channelname,$nickname,$address);
 477 		return defined($flags) && check_modes($flags,$param);
 478 	}
 479 },
 480 'other_hasflag' => {
 481 	'types' => ['kicks', 'mode_nick'],
 482 	'sub' => sub {
 483 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 484 		return 0 unless defined($extra->{'other'});
 485 		my $other_address = get_address($extra->{'other'}, $server, $channelname);
 486 		return 0 unless defined($other_address);
 487 		my $flags = get_flags ($server->{'chatnet'},$channelname,$extra->{'other'},$other_address);
 488 		return defined($flags) && check_modes($flags,$param);
 489 	}
 490 },
 491 'mode_type' => {
 492 	'types' => ['mode_channel', 'mode_nick'],
 493 	'sub' => sub {
 494 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 495 		return (($param) eq $extra->{'mode_type'});
 496 	}
 497 },
 498 'mode_char' => {
 499 	'types' => ['mode_channel', 'mode_nick'],
 500 	'sub' => sub {
 501 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 502 		return (($param) eq $extra->{'mode_char'});
 503 	}
 504 },
 505 'mode_arg' => {
 506 	'types' => ['mode_channel', 'mode_nick'],
 507 	'sub' => sub {
 508 		my ($param, $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra) = @_;
 509 		return (($param) eq $extra->{'mode_arg'});
 510 	}
 511 }
 512 );
 513 
 514 sub get_address {
 515 	my ($nick, $server, $channel) = @_;
 516 	my $nickrec = get_nickrec($nick, $server, $channel);
 517 	return $nickrec ? $nickrec->{'host'} : undef;
 518 }
 519 sub get_nickrec {
 520 	my ($nick, $server, $channel) = @_;
 521 	return unless defined($server) && defined($channel) && defined($nick);
 522 	my $chanrec = $server->channel_find($channel);
 523 	return $chanrec ? $chanrec->nick_find($nick) : undef;
 524 }
 525 
 526 sub hasmode {
 527 	my ($param, $nickname, $server, $channelname) = @_;
 528 	my $nickrec = get_nickrec($nickname, $server, $channelname);
 529 	return 0 unless defined $nickrec;
 530 	my $modes =
 531 		($nickrec->{'op'} ? 'o' : '')
 532 		. ($nickrec->{'voice'} ? 'v' : '')
 533 		. ($nickrec->{'halfop'} ? 'h' : '')
 534 	;
 535 	return check_modes($modes, $param);
 536 }
 537 
 538 # list of all switches
 539 my @trigger_switches = (@trigger_types, qw(all nocase stop once debug disabled));
 540 # parameters (with an argument)
 541 my @trigger_params = qw(pattern regexp command replace name);
 542 # list of all options (including switches) for /TRIGGER ADD
 543 my @trigger_add_options = (@trigger_switches, @trigger_params, keys(%filters));
 544 # same for /TRIGGER CHANGE, this includes the -no<option>'s
 545 my @trigger_options = map(($_,'no'.$_) ,@trigger_add_options);
 546 
 547 # check the triggers on $signal's $parammessage parameter, for triggers with $condition set
 548 #  on $server in $channelname, for $nickname!$address
 549 # set $parammessage to -1 if the signal doesn't have a message
 550 # for signal without channel, nick or address, set to undef
 551 sub check_signal_message {
 552 	my ($signal, $parammessage, $server, $channelname, $nickname, $address, $condition, $extra) = @_;
 553 	my ($changed, $stopped, $context, $need_rebuild);
 554 	my $message = ($parammessage == -1) ? '' : $signal->[$parammessage];
 555 
 556 	return if (!$triggers_by_type{$condition});
 557 	
 558 	if ($recursion_depth > 10) {
 559 		Irssi::print("Trigger error: Maximum recursion depth reached, aborting trigger.", MSGLEVEL_CLIENTERROR);
 560 		return;
 561 	}
 562 	$recursion_depth++;
 563 
 564 TRIGGER:	
 565 	foreach my $trigger (@{$triggers_by_type{$condition}}) {
 566 		# check filters
 567 		foreach my $trigfilter (@{$trigger->{'filters'}}) {
 568 			if (! ($trigfilter->[2]($trigfilter->[1], $signal,$parammessage,$server,$channelname,$nickname,$address,$condition,$extra))) {
 569 			
 570 				next TRIGGER;
 571 			}
 572 		}
 573 		
 574 		# check regexp (and keep matches in @- and @+, so don't make a this a {block})
 575 		next if ($trigger->{'compregexp'} && ($parammessage == -1 || $message !~ m/$trigger->{'compregexp'}/));
 576 		
 577 		# if we got this far, it fully matched, and we need to do the replace/command/stop/once
 578 		my $expands = $extra;
 579 		$expands->{'M'} = $message,;
 580 		$expands->{'T'} = (defined($server)) ? $server->{'tag'} : '';
 581 		$expands->{'C'} = $channelname;
 582 		$expands->{'N'} = $nickname;
 583 		$expands->{'A'} = $address;
 584 		$expands->{'I'} = ((!defined($address)) ? '' : substr($address,0,index($address,'@')));
 585 		$expands->{'H'} = ((!defined($address)) ? '' : substr($address,index($address,'@')+1));
 586 		$expands->{'$'} = '$';
 587 		$expands->{';'} = ';';
 588 
 589 		if (defined($trigger->{'replace'})) { # it's a -replace
 590 			$message =~ s/$trigger->{'compregexp'}/do_expands($trigger->{'compreplace'},$expands,$message)/ge;
 591 			$changed = 1;
 592 		}
 593 		
 594 		if ($trigger->{'command'}) { # it's a (nonempty) -command
 595 			my $command = $trigger->{'command'};
 596 			# $1 = the stuff behind the $ we want to expand: a number, or a character from %expands
 597 			$command = do_expands($command, $expands, $message);
 598 			
 599 			if (defined($server)) {
 600 				if (defined($channelname) && $server->channel_find($channelname)) {
 601 					$context = $server->channel_find($channelname);
 602 				} else {
 603 					$context = $server;
 604 				}
 605 			} else {
 606 				$context = undef;
 607 			}
 608 			
 609 			if (defined($context)) {
 610 				$context->command("eval $command");
 611 			} else {
 612 				Irssi::command("eval $command");
 613 			}
 614 		}
 615 
 616 		if ($trigger->{'debug'}) {
 617 			print("DEBUG: trigger $condition pmesg=$parammessage message=$message server=$server->{tag} channel=$channelname nick=$nickname address=$address " . join(' ',map {$_ . '=' . $extra->{$_}} keys(%$extra)));
 618 		}
 619 		
 620 		if ($trigger->{'stop'}) {
 621 			$stopped = 1;
 622 		}
 623 		
 624 		if ($trigger->{'once'}) {
 625 			# find this trigger in the real trigger list, and remove it
 626 			for (my $realindex=0; $realindex < scalar(@triggers); $realindex++) {
 627 				if ($triggers[$realindex] == $trigger) {
 628 					splice (@triggers,$realindex,1);
 629 					last;
 630 				}
 631 			}
 632 			$need_rebuild = 1;
 633 		}
 634 	}
 635 
 636 	if ($need_rebuild) {
 637 		rebuild();
 638 		$changed_since_last_save = 1;
 639 	}
 640 	if ($stopped) { # stopped with -stop
 641 		signal_stop();
 642 	} elsif ($changed) { # changed with -replace
 643 		$signal->[$parammessage] = $message;
 644 		signal_continue(@$signal);
 645 	}
 646 	$recursion_depth--;
 647 }
 648 
 649 # used in check_signal_message to expand $'s
 650 # $inthis is a string that can contain $ stuff (like 'foo$1bar$N')
 651 sub do_expands {
 652 	my ($inthis, $expands, $from) = @_;
 653 	# @+ and @- are copied because there are two s/// nested, and the inner needs the $1 and $2,... of the outer one
 654 	my @plus = @+;
 655 	my @min = @-;
 656 	my $p = \@plus; my $m = \@min;
 657 	$inthis =~ s/\$(\\*(\d+|[^0-9x{]|x[0-9a-fA-F][0-9a-fA-F]|{.*?}))/expand_and_escape($1,$expands,$m,$p,$from)/ge;	
 658 	return $inthis;
 659 }
 660 
 661 # \ $ and ; need extra escaping because we use eval
 662 sub expand_and_escape {
 663 	my $retval = expand(@_);
 664 	$retval =~ s/([\\\$;])/\\\1/g;
 665 	return $retval;
 666 }
 667 
 668 # used in do_expands (via expand_and_escape), to_expand is the part after the $
 669 sub expand {
 670 	my ($to_expand, $expands, $min, $plus, $from) = @_;
 671 	if ($to_expand =~ /^\d+$/) { # a number => look up in $vars
 672 		# from man perlvar:
 673 		# $3 is the same as "substr $var, $-[3], $+[3] - $-[3])"
 674 		return ($to_expand > @{$min} ? '' : substr($from,$min->[$to_expand],$plus->[$to_expand]-$min->[$to_expand]));
 675 	} elsif ($to_expand =~ s/^\\//) { # begins with \, so strip that from to_expand
 676 		my $exp = expand($to_expand,$expands,$min,$plus,$from); # first expand without \
 677 		$exp =~ s/([^a-zA-Z0-9])/\\\1/g; # escape non-word chars
 678 		return $exp;
 679 	} elsif ($to_expand =~ /^x([0-9a-fA-F]{2})/) { # $xAA
 680 		return chr(hex($1));
 681 	} elsif ($to_expand =~ /^{(.*?)}$/) { # ${foo}
 682 		return expand($1, $expands, $min, $plus, $from);
 683 	} else { # look up in $expands
 684 		return $expands->{$to_expand};
 685 	}
 686 }
 687 
 688 sub check_modes {
 689 	my ($has_modes, $need_modes) = @_;
 690 	my $matches;
 691 	my $switch = 1; # if a '-' if found, will be 0 (meaning the modes should not be set)
 692 	foreach my $need_mode (split /&/, $need_modes) {
 693 		$matches = 0;
 694 		foreach my $char (split //, $need_mode) {
 695 			if ($char eq '-') {
 696 				$switch = 0;
 697 			} elsif ($char eq '+') {
 698 				$switch = 1;
 699 			} elsif ((index($has_modes, $char) != -1) == $switch) {
 700 				$matches = 1;
 701 				last;
 702 			}
 703 		}
 704 		if (!$matches) {
 705 			return 0;
 706 		}
 707 	}
 708 	return 1;
 709 }
 710 
 711 # get someones flags from people.pl or friends(_shasta).pl
 712 sub get_flags {
 713 	my ($chatnet, $channel, $nick, $address) = @_;
 714 	my $flags;
 715 	no strict 'refs';
 716 	if (defined %{ 'Irssi::Script::people::' }) {
 717 		if (defined ($channel)) {
 718 			$flags = (&{ 'Irssi::Script::people::find_local_flags' }($chatnet,$channel,$nick,$address));
 719 		} else {
 720 			$flags = (&{ 'Irssi::Script::people::find_global_flags' }($chatnet,$nick,$address));
 721 		}
 722 		$flags = join('',keys(%{$flags}));
 723 	} else {
 724 		my $shasta;
 725 		if (defined %{ 'Irssi::Script::friends_shasta::' }) {
 726 			$shasta = 'friends_shasta';
 727 		} elsif (defined &{ 'Irssi::Script::friends::get_idx' }) {
 728 			$shasta = 'friends';
 729 		} else {
 730 			return undef;
 731 		}
 732 		my $idx = (&{ 'Irssi::Script::'.$shasta.'::get_idx' }($nick, $address));
 733 		if ($idx == -1) {
 734 			return '';
 735 		}
 736 		$flags = (&{ 'Irssi::Script::'.$shasta.'::get_friends_flags' }($idx,undef));
 737 		if ($channel) {
 738 			$flags .= (&{ 'Irssi::Script::'.$shasta.'::get_friends_flags' }($idx,$channel));
 739 		}
 740 	}
 741 	return $flags;
 742 }
 743 
 744 ########################################################
 745 ### internal stuff called by manage, needed by above ###
 746 ########################################################
 747 
 748 my %mask_to_regexp = ();
 749 foreach my $i (0..255) {
 750     my $ch = chr $i;
 751     $mask_to_regexp{$ch} = "\Q$ch\E";
 752 }
 753 $mask_to_regexp{'?'} = '(.)';
 754 $mask_to_regexp{'*'} = '(.*)';
 755 
 756 sub compile_trigger {
 757 	my ($trigger) = @_;
 758 	my $regexp;
 759 	
 760 	if ($trigger->{'regexp'}) {
 761 		$regexp = $trigger->{'regexp'};
 762 	} elsif ($trigger->{'pattern'}) {
 763 		$regexp = $trigger->{'pattern'};
 764 		$regexp =~ s/(.)/$mask_to_regexp{$1}/g;
 765 	} else {
 766 		delete $trigger->{'compregexp'};
 767 		return;
 768 	}
 769 	
 770 	if ($trigger->{'nocase'}) {
 771 		$regexp = '(?i)' . $regexp;
 772 	}
 773 	
 774 	$trigger->{'compregexp'} = qr/$regexp/;
 775 	
 776 	if(defined($trigger->{'replace'})) {
 777 		(my $replace = $trigger->{'replace'}) =~ s/\$/\$\$/g;
 778 		$trigger->{'compreplace'} = Irssi::parse_special($replace);
 779 	}
 780 }
 781 
 782 # rebuilds triggers_by_type and updates signal binds
 783 sub rebuild {
 784 	%triggers_by_type = ();
 785 	foreach my $trigger (@triggers) {
 786 		if (!$trigger->{'disabled'}) {
 787 			if ($trigger->{'all'}) {
 788 				# -all is an alias for all types in @all_types for which the filters can apply
 789 ALLTYPES:
 790 				foreach my $type (@all_types) {
 791 					# check if all filters can apply to $type
 792 					foreach my $filter (@{$trigger->{'filters'}}) {
 793 						if (! grep {$_ eq $type} $filters{$filter->[0]}->{'types'}) {
 794 							next ALLTYPES;
 795 						}
 796 					}
 797 					push @{$triggers_by_type{$type}}, ($trigger);
 798 				}
 799 			}
 800 			
 801 			foreach my $type ($trigger->{'all'} ? @notall_types : @trigger_types) {
 802 				if ($trigger->{$type}) {
 803 					push @{$triggers_by_type{$type}}, ($trigger);
 804 				}
 805 			}
 806 		}
 807 	}
 808 	
 809 	foreach my $signal (@signals) {
 810 		my $should_bind = 0;
 811 		foreach my $type (@{$signal->{'types'}}) {
 812 			if (defined($triggers_by_type{$type})) {
 813 				$should_bind = 1;
 814 			}
 815 		}
 816 		if ($should_bind && !$signal->{'bind'}) {
 817 			signal_add_first($signal->{'signal'}, $signal->{'sub'});
 818 			$signal->{'bind'} = 1;
 819 		} elsif (!$should_bind && $signal->{'bind'}) {
 820 			signal_remove($signal->{'signal'}, $signal->{'sub'});
 821 			$signal->{'bind'} = 0;
 822 		}
 823 	}
 824 }
 825 
 826 ################################
 827 ### manage the triggers-list ###
 828 ################################
 829 
 830 my $trigger_file; # cached setting
 831 
 832 sub sig_setup_changed {
 833 	$trigger_file = Irssi::settings_get_str('trigger_file');
 834 }
 835 
 836 sub autosave {
 837 	cmd_save() if ($changed_since_last_save);
 838 }
 839 
 840 # TRIGGER SAVE
 841 sub cmd_save {
 842 	my $io = new IO::File $trigger_file, "w";
 843 	if (defined $io) {
 844 		$io->print("#Triggers file version $VERSION\n");
 845 		foreach my $trigger (@triggers) {
 846 			$io->print(to_string($trigger) . "\n");
 847 		}
 848 		$io->close;
 849 	}
 850 	Irssi::printformat(MSGLEVEL_CLIENTNOTICE, 'trigger_saved', $trigger_file);
 851 	$changed_since_last_save = 0;
 852 }
 853 
 854 # save on unload
 855 sub UNLOAD {
 856 	cmd_save();
 857 }
 858 
 859 # TRIGGER LOAD
 860 sub cmd_load {
 861 	sig_setup_changed(); # make sure we've read the trigger_file setting
 862 	my $converted = 0;
 863 	my $io = new IO::File $trigger_file, "r";
 864 	if (not defined $io) {
 865 		if (-e $trigger_file) {
 866 			Irssi::print("Error opening triggers file", MSGLEVEL_CLIENTERROR);
 867 		}
 868 		return;
 869 	}
 870 	if (defined $io) {
 871 		@triggers = ();
 872 		my $text;
 873 		$text = $io->getline;
 874 		my $file_version = '';
 875 		if ($text =~ /^#Triggers file version (.*)\n/) {
 876 			$file_version = $1;
 877 		}
 878 		if ($file_version lt '0.6.1+2') {
 879 			no strict 'vars';
 880 			$text .= $_ foreach ($io->getlines);
 881 			my $rep = eval "$text";
 882 			if (! ref $rep) {
 883 				Irssi::print("Error in triggers file");
 884 				return;
 885 			}
 886 			my @old_triggers = @$rep;
 887 		
 888 			for (my $index=0;$index < scalar(@old_triggers);$index++) { 
 889 				my $trigger = $old_triggers[$index];
 890 	
 891 				if ($file_version lt '0.6.1') {
 892 					# convert old names: notices => pubnotices, actions => pubactions
 893 					foreach $oldname ('notices','actions') {
 894 						if ($trigger->{$oldname}) {
 895 							delete $trigger->{$oldname};
 896 							$trigger->{'pub'.$oldname} = 1;
 897 							$converted = 1;
 898 						}
 899 					}
 900 				}
 901 				if ($file_version lt '0.6.1+1' && $trigger->{'modifiers'}) {
 902 					if ($trigger->{'modifiers'} =~ /i/) {
 903 						$trigger->{'nocase'} = 1;
 904 						Irssi::print("Trigger: trigger ".($index+1)." had 'i' in it's modifiers, it has been converted to -nocase");
 905 					}
 906 					if ($trigger->{'modifiers'} !~ /^[ig]*$/) {
 907 						Irssi::print("Trigger: trigger ".($index+1)." had unrecognised modifier '". $trigger->{'modifiers'} ."', which couldn't be converted.");
 908 					}
 909 					delete $trigger->{'modifiers'};
 910 					$converted = 1;
 911 				}
 912 				
 913 				if (defined($trigger->{'replace'}) && ! $trigger->{'regexp'}) {
 914 					Irssi::print("Trigger: trigger ".($index+1)." had -replace but no -regexp, removed it");
 915 					splice (@old_triggers,$index,1);
 916 					$index--; # nr of next trigger now is the same as this one was
 917 				}
 918 				
 919 				# convert to text with compat, and then to new trigger hash
 920 				$text = to_string($trigger,1);
 921 				my @args = &shellwords($text . ' a');
 922 				my $trigger = parse_options({},@args);
 923 				if ($trigger) {
 924 					push @triggers, $trigger;
 925 				}
 926 			}
 927 		} else { # new format
 928 			while ( $text = $io->getline ) {
 929 				chop($text);
 930 				my @args = &shellwords($text . ' a');
 931 				my $trigger = parse_options({},@args);
 932 				if ($trigger) {
 933 					push @triggers, $trigger;
 934 				}
 935 			}
 936 		}
 937 	}
 938 	Irssi::printformat(MSGLEVEL_CLIENTNOTICE, 'trigger_loaded', $trigger_file);
 939 	if ($converted) {
 940 		Irssi::print("Trigger: Triggers file will be in new format next time it's saved.");
 941 	}
 942 	rebuild();
 943 }
 944 
 945 # escape for printing with to_string
 946 # <<abcdef>>      => << 'abcdef' >>
 947 # <<abc'def>>     => << "abc'def" >>
 948 # <<abc'def\x02>> => << 'abc'\''def\x02' >>
 949 sub param_to_string {
 950 	my ($text) = @_;
 951 	# avoid ugly escaping if we can use "-quotes without other escaping (no " or \)
 952 	if ($text =~ /^[^"\\]*'[^"\\]$/) {
 953 		return ' "' . $text . '" ';
 954 	}
 955 	# "'" signs without a (odd number of) \ in front of them, need be to escaped as '\''
 956 	# this is ugly :(
 957 	$text =~ s/(^|[^\\](\\\\)*)'/$1'\\''/g;
 958 	return " '$text' ";
 959 }
 960 
 961 # converts a trigger back to "-switch -options 'foo'" form
 962 # if $compat, $trigger is in the old format (used to convert)
 963 sub to_string {
 964 	my ($trigger, $compat) = @_;
 965 	my $string;
 966 	
 967 	foreach my $switch (@trigger_switches) {
 968 		if ($trigger->{$switch}) {
 969 			$string .= '-'.$switch.' ';
 970 		}
 971 	}
 972 	
 973 	if ($compat) {
 974 		foreach my $filter (keys(%filters)) {
 975 			if ($trigger->{$filter}) {
 976 				$string .= '-' . $filter . param_to_string($trigger->{$filter});
 977 			}
 978 		}
 979 	} else {
 980 		foreach my $trigfilter (@{$trigger->{'filters'}}) {
 981 			$string .= '-' . $trigfilter->[0] . param_to_string($trigfilter->[1]);
 982 		}
 983 	}
 984 
 985 	foreach my $param (@trigger_params) {
 986 		if ($trigger->{$param} || ($param eq 'replace' && defined($trigger->{'replace'}))) {
 987 			$string .= '-' . $param . param_to_string($trigger->{$param});
 988 		}
 989 	}
 990 	return $string;
 991 }
 992 
 993 # find a trigger (for REPLACE and DELETE), returns index of trigger, or -1 if not found
 994 sub find_trigger {
 995 	my ($data) = @_;
 996 	if ($data =~ /^[0-9]*$/ and defined($triggers[$data-1])) {
 997 		return $data-1;
 998 	} else {
 999 		for (my $i=0; $i < scalar(@triggers); $i++) {
1000 			if ($triggers[$i]->{'name'} eq $data) {
1001 				return $i;
1002 			}
1003 		}
1004 	}
1005 	Irssi::printformat(MSGLEVEL_CLIENTCRAP, 'trigger_not_found', $data);
1006 	return -1; # not found
1007 }
1008 
1009 
1010 # TRIGGER ADD <options>
1011 sub cmd_add {
1012 	my ($data, $server, $item) = @_;
1013 	my @args = shellwords($data . ' a');
1014 	
1015 	my $trigger = parse_options({}, @args);
1016 	if ($trigger) {
1017 		push @triggers, $trigger;
1018 		Irssi::printformat(MSGLEVEL_CLIENTCRAP, 'trigger_added', scalar(@triggers), to_string($trigger));
1019 		rebuild();
1020 		$changed_since_last_save = 1;
1021 	}
1022 }
1023 
1024 # TRIGGER CHANGE <nr> <options>
1025 sub cmd_change {
1026 	my ($data, $server, $item) = @_;
1027 	my @args = shellwords($data . ' a');
1028 	my $index = find_trigger(shift @args);
1029 	if ($index != -1) {
1030 		if(parse_options($triggers[$index], @args)) {
1031 			Irssi::print("Trigger " . ($index+1) ." changed to: ". to_string($triggers[$index]));
1032 		}
1033 		rebuild();
1034 		$changed_since_last_save = 1;
1035 	}
1036 }
1037 
1038 # parses options for TRIGGER ADD and TRIGGER CHANGE
1039 # if invalid args returns undef, else changes $thetrigger and returns it
1040 sub parse_options {
1041 	my ($thetrigger,@args) = @_;
1042 	my ($trigger, $option);
1043 	
1044 	if (pop(@args) ne 'a') {
1045 		Irssi::print("Syntax error, probably missing a closing quote", MSGLEVEL_CLIENTERROR);
1046 		return undef;
1047 	}
1048 	
1049 	%$trigger = %$thetrigger; # make a copy to prevent changing the given trigger if args doesn't parse
1050 ARGS:	for (my $arg = shift @args; $arg; $arg = shift @args) {
1051 		# expand abbreviated options, put in $option
1052 		$arg =~ s/^-//;
1053 		$option = undef;
1054 		foreach my $ioption (@trigger_options) {
1055 			if (index($ioption, $arg) == 0) { # -$opt starts with $arg
1056 				if ($option) { # another already matched
1057 					Irssi::print("Ambiguous option: $arg", MSGLEVEL_CLIENTERROR);
1058 					return undef;
1059 				}
1060 				$option = $ioption;
1061 				last if ($arg eq $ioption); # exact match is unambiguous
1062 			}
1063 		}
1064 		if (!$option) {
1065 			Irssi::print("Unknown option: $arg", MSGLEVEL_CLIENTERROR);
1066 			return undef;
1067 		}
1068 
1069 		# -<param> <value> or -no<param>
1070 		foreach my $param (@trigger_params) {
1071 			if ($option eq $param) {
1072 				$trigger->{$param} = shift @args;
1073 				next ARGS;
1074 			}
1075 			if ($option eq 'no'.$param) {
1076 				$trigger->{$param} = undef;
1077 				next ARGS;
1078 			}
1079 		}
1080 
1081 		# -[no]<switch>
1082 		foreach my $switch (@trigger_switches) {
1083 			# -<switch>
1084 			if ($option eq $switch) {
1085 				$trigger->{$switch} = 1;
1086 				next ARGS;
1087 			}
1088 			# -no<switch>
1089 			elsif ($option eq 'no'.$switch) {
1090 				$trigger->{$switch} = undef;
1091 				next ARGS;
1092 			}
1093 		}
1094 		
1095 		# -<filter> <value>
1096 		if ($filters{$option}) {
1097 			push @{$trigger->{'filters'}}, [$option, shift @args, $filters{$option}->{'sub'}];
1098 			next ARGS;
1099 		}
1100 		
1101 		# -<nofilter>
1102 		if ($option =~ /^no(.*)$/ && $filters{$1}) {
1103 			my $filter = $1;
1104 			# the new filters are the old grepped for everything except ones with name $filter
1105 			@{$trigger->{'filters'}} = grep( $_->[0] ne $filter, @{$trigger->{'filters'}} );
1106 		}
1107 	}
1108 	
1109 	if (defined($trigger->{'replace'}) && ! $trigger->{'regexp'} && !$trigger->{'pattern'}) {
1110 		Irssi::print("Trigger error: Can't have -replace without -regexp", MSGLEVEL_CLIENTERROR);
1111 		return undef;
1112 	}
1113 
1114 	if ($trigger->{'pattern'} && $trigger->{'regexp'}) {
1115 		Irssi::print("Trigger error: Can't have -pattern and -regexp in same trigger", MSGLEVEL_CLIENTERROR);
1116 		return undef;
1117 	}
1118 	
1119 	# remove types that are implied by -all
1120 	if ($trigger->{'all'}) {
1121 		foreach my $type (@all_types) {
1122 			delete $trigger->{$type};
1123 		}
1124 	}
1125 	
1126 	# remove types for which the filters don't apply
1127 	foreach my $type (@trigger_types) {
1128 		if ($trigger->{$type}) {
1129 			foreach my $filter (@{$trigger->{'filters'}}) {
1130 				if (!grep {$_ eq $type} @{$filters{$filter->[0]}->{'types'}}) {
1131 					Irssi::print("Warning: the filter -" . $filter->[0] . " can't apply to an event of type -$type, so I'm removing that type from this trigger.");
1132 					delete $trigger->{$type};
1133 				}
1134 			}
1135 		}
1136 	}
1137 
1138 	# check if it has at least one type
1139 	my $has_a_type;
1140 	foreach my $type (@trigger_types) {
1141 		if ($trigger->{$type}) {
1142 			$has_a_type = 1;
1143 			last;
1144 		}
1145 	}
1146 	if (!$has_a_type && !$trigger->{'all'}) {
1147 		Irssi::print("Warning: this trigger doesn't trigger on any type of message. you probably want to add -publics or -all");
1148 	}
1149 	
1150 	compile_trigger($trigger);
1151 	%$thetrigger = %$trigger; # copy changes to real trigger
1152 	return $thetrigger;
1153 }
1154 
1155 # TRIGGER DELETE <num>
1156 sub cmd_del {
1157 	my ($data, $server, $item) = @_;
1158 	my @args = shellwords($data);
1159 	my $index = find_trigger(shift @args);
1160 	if ($index != -1) {
1161 		Irssi::print("Deleted ". ($index+1) .": ". to_string($triggers[$index]));
1162 		splice (@triggers,$index,1);
1163 		rebuild();
1164 		$changed_since_last_save = 1;
1165 	}
1166 }
1167 
1168 # TRIGGER MOVE <num> <num>
1169 sub cmd_move {
1170 	my ($data, $server, $item) = @_;
1171 	my @args = &shellwords($data);
1172 	my $index = find_trigger(shift @args);
1173 	if ($index != -1) {
1174 		my $newindex = shift @args;
1175 		if ($newindex < 1 || $newindex > scalar(@triggers)) {
1176 			Irssi::print("$newindex is not a valid trigger number");
1177 			return;
1178 		}
1179 		Irssi::print("Moved from ". ($index+1) ." to $newindex: ". to_string($triggers[$index]));
1180 		$newindex -= 1; # array starts counting from 0
1181 		my $trigger = splice (@triggers,$index,1); # remove from old place
1182 		splice (@triggers,$newindex,0,($trigger)); # insert at new place
1183 		rebuild();
1184 		$changed_since_last_save = 1;
1185 	}
1186 }
1187 
1188 # TRIGGER LIST
1189 sub cmd_list {
1190 	Irssi::printformat(MSGLEVEL_CLIENTCRAP, 'trigger_header');
1191 	my $i=1;
1192 	foreach my $trigger (@triggers) {
1193 		Irssi::printformat(MSGLEVEL_CLIENTCRAP, 'trigger_line', $i++, to_string($trigger));
1194 	}
1195 }
1196 
1197 ######################
1198 ### initialisation ###
1199 ######################
1200 
1201 command_bind('trigger help',\&cmd_help);
1202 command_bind('help trigger',\&cmd_help);
1203 command_bind('trigger add',\&cmd_add);
1204 command_bind('trigger change',\&cmd_change);
1205 command_bind('trigger move',\&cmd_move);
1206 command_bind('trigger list',\&cmd_list);
1207 command_bind('trigger delete',\&cmd_del);
1208 command_bind('trigger save',\&cmd_save);
1209 command_bind('trigger reload',\&cmd_load);
1210 command_bind 'trigger' => sub {
1211     my ( $data, $server, $item ) = @_;
1212     $data =~ s/\s+$//g;
1213     command_runsub('trigger', $data, $server, $item);
1214 };
1215 
1216 Irssi::signal_add('setup saved', \&autosave);
1217 Irssi::signal_add('setup changed', \&sig_setup_changed);
1218 
1219 # This makes tab completion work
1220 Irssi::command_set_options('trigger add',join(' ',@trigger_add_options));
1221 Irssi::command_set_options('trigger change',join(' ',@trigger_options));
1222 
1223 Irssi::settings_add_str($IRSSI{'name'}, 'trigger_file', Irssi::get_irssi_dir()."/triggers");
1224 
1225 cmd_load();