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1 ;; erc.el --- An Emacs Internet Relay Chat client -*- lexical-binding:t -*-
3 ;; Copyright (C) 1997-2014 Free Software Foundation, Inc.
5 ;; Author: Alexander L. Belikoff (alexander@belikoff.net)
6 ;; Contributors: Sergey Berezin (sergey.berezin@cs.cmu.edu),
7 ;; Mario Lang (mlang@delysid.org),
8 ;; Alex Schroeder (alex@gnu.org)
9 ;; Andreas Fuchs (afs@void.at)
10 ;; Gergely Nagy (algernon@midgard.debian.net)
11 ;; David Edmondson (dme@dme.org)
12 ;; Maintainer: FSF
13 ;; Keywords: IRC, chat, client, Internet
14 ;; Version: 5.3
16 ;; This file is part of GNU Emacs.
18 ;; GNU Emacs is free software: you can redistribute it and/or modify
19 ;; it under the terms of the GNU General Public License as published by
20 ;; the Free Software Foundation, either version 3 of the License, or
21 ;; (at your option) any later version.
23 ;; GNU Emacs is distributed in the hope that it will be useful,
24 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
25 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 ;; GNU General Public License for more details.
28 ;; You should have received a copy of the GNU General Public License
29 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
31 ;;; Commentary:
33 ;; ERC is a powerful, modular, and extensible IRC client for Emacs.
35 ;; For more information, see the following URLs:
36 ;; * http://sv.gnu.org/projects/erc/
37 ;; * http://www.emacswiki.org/cgi-bin/wiki/ERC
39 ;; As of 2006-06-13, ERC development is now hosted on Savannah
40 ;; (http://sv.gnu.org/projects/erc). I invite everyone who wants to
41 ;; hack on it to contact me <mwolson@gnu.org> in order to get write
42 ;; access to the shared Arch archive.
44 ;; Installation:
46 ;; Put erc.el in your load-path, and put (require 'erc) in your .emacs.
48 ;; Configuration:
50 ;; Use M-x customize-group RET erc RET to get an overview
51 ;; of all the variables you can tweak.
53 ;; Usage:
55 ;; To connect to an IRC server, do
56 ;;
57 ;; M-x erc RET
58 ;;
59 ;; After you are connected to a server, you can use C-h m or have a look at
60 ;; the ERC menu.
62 ;;; History:
63 ;;
65 ;;; Code:
78 "http://emacswiki.org/cgi-bin/wiki/ERC (mailing list: erc-discuss@gnu.org)"
82 "Emacs Internet Relay Chat client."
88 "Creating new ERC buffers"
92 "Settings for how various things are displayed"
96 "Displaying information in the mode-line and header"
100 "Ignoring certain messages"
104 "Hide specified message types sent by lurkers"
109 "Using separate buffers for private discussions"
113 "Quitting and parting channels"
117 "Know what is sent and received; control the display of sensitive data."
121 "Running scripts at startup and with /LOAD"
126 ;; compatibility with older ERC releases
137 ;; tunable connection and authentication parameters
140 "IRC server to use if one is not provided.
141 See function `erc-compute-server' for more details on connection
142 parameters and authentication."
148 "IRC port to use if not specified.
150 This can be either a string or a number."
157 "Nickname to use if one is not provided.
159 This can be either a string, or a list of strings.
160 In the latter case, if the first nick in the list is already in use,
161 other nicks are tried in the list order.
163 See function `erc-compute-nick' for more details on connection
164 parameters and authentication."
171 "The string to append to the nick if it is already in use."
176 "If the nickname you chose isn't available, and this option is non-nil,
177 ERC should automatically attempt to connect with another nickname.
179 You can manually set another nickname with the /NICK command."
184 "User full name.
186 This can be either a string or a function to call.
188 See function `erc-compute-full-name' for more details on connection
189 parameters and authentication."
198 "Password to use when authenticating to an IRC server.
199 It is not strictly necessary to provide this, since ERC will
203 "Initial user modes to be set after a connection is established."
209 "Asks before using the default password, or whether to enter a new one."
214 "Warn the user if they attempt to send a blank line."
219 "If set to non-nil, send lines consisting of only whitespace."
224 "If non-nil, do not display the prompt for commands.
226 \(A command is any input starting with a '/').
228 See also the variables `erc-prompt' and `erc-command-indicator'."
232 ;; tunable GUI stuff
235 "If non-nil, display one's own nickname when sending a message.
243 "A set of standard IRC Message types."
253 "List of IRC type messages to hide.
263 "Run this hook with arguments (NICK IP REASON) when disconnected.
264 This happens before automatic reconnection. Note, that
265 `erc-server-QUIT-functions' might not be run when we disconnect,
266 simply because we do not necessarily receive the QUIT event."
271 "These functions get called when the user hits TAB in ERC.
272 Each function in turn is called until one returns non-nil to
273 indicate it has handled the input."
278 "Hook run when we join a channel. Hook functions are called
279 without arguments, with the current buffer set to the buffer of
280 the new channel.
282 See also `erc-server-JOIN-functions', `erc-part-hook'."
287 "Hook run when processing a quit command directed at our nick.
289 The hook receives one argument, the current PROCESS.
290 See also `erc-server-QUIT-functions' and `erc-disconnected-hook'."
295 "Hook run when processing a PART message directed at our nick.
297 The hook receives one argument, the current BUFFER.
298 See also `erc-server-QUIT-functions', `erc-quit-hook' and
299 `erc-disconnected-hook'."
304 "Hook run when processing a KICK message directed at our nick.
306 The hook receives one argument, the current BUFFER.
307 See also `erc-server-PART-functions' and `erc-part-hook'."
312 "List of functions run when your nick was successfully changed.
314 Each function should accept two arguments, NEW-NICK and OLD-NICK."
319 "Hook called just before `erc' calls `erc-connect'.
320 Functions are passed a buffer as the first argument."
326 "A hash table of members in the current channel, which
327 associates nicknames with cons cells of the form:
328 \(USER . MEMBER-DATA) where USER is a pointer to an
329 erc-server-user struct, and MEMBER-DATA is a pointer to an
334 "A hash table of users on the current server, which associates
339 "Convert STRING to IRC standard conforming downcase."
349 s))
352 "Execute BODY in the current ERC server buffer.
353 If no server buffer exists, return nil."
362 ;; User data
363 nickname host login full-name info
364 ;; Buffers
365 ;;
366 ;; This is an alist of the form (BUFFER . CHANNEL-DATA), where
367 ;; CHANNEL-DATA is either nil or an erc-channel-user struct.
369 )
372 op voice
373 ;; Last message time (in the form of the return value of
374 ;; (current-time)
375 ;;
376 ;; This is useful for ordered name completion.
380 "Find the (USER . CHANNEL-DATA) element corresponding to NICK
381 in the current buffer's `erc-channel-users' hash table."
385 "Find the USER corresponding to NICK in the current server's
386 `erc-server-users' hash table."
391 "This function is for internal use only.
393 Adds USER with nickname NICK to the `erc-server-users' hash table."
398 "This function is for internal use only.
400 Removes the user with nickname NICK from the `erc-server-users'
401 hash table. This user is not removed from the
402 `erc-channel-users' lists of other buffers.
404 See also: `erc-remove-user'."
409 "This function is for internal use only.
411 Changes the nickname of USER to NEW-NICK in the
412 `erc-server-users' hash table. The `erc-channel-users' lists of
413 other buffers are also changed."
425 erc-channel-users)))))))
428 "This function is for internal use only.
430 Removes the user with nickname NICK from the `erc-channel-users'
431 list for this channel. If this user is not in the
432 `erc-channel-users' list of any other buffers, the user is also
433 removed from the server's `erc-server-users' list.
435 See also: `erc-remove-server-user' and `erc-remove-user'."
447 "This function is for internal use only.
449 Removes the user with nickname NICK from the `erc-server-users'
450 list as well as from all `erc-channel-users' lists.
452 See also: `erc-remove-server-user' and
453 `erc-remove-channel-user'."
465 "This function is for internal use only.
467 Removes all users in the current channel. This is called by
468 `erc-server-PART' and `erc-server-QUIT'."
474 erc-channel-users)
478 "Return t if NICK is an operator in the current channel."
486 "Return t if NICK has voice in the current channel."
494 "Return a list of users in the current channel. Each element
495 of the list is of the form (USER . CHANNEL-DATA), where USER is
496 an erc-server-user struct, and CHANNEL-DATA is either nil or an
497 erc-channel-user struct.
499 See also: `erc-sort-channel-users-by-activity'"
504 erc-channel-users))
505 users))
508 "Return a list of known nicknames on the current server."
515 nicks)))
516 erc-server-users)
517 nicks))))
520 "Return a list of known nicknames on the current channel."
526 nicks)))
527 erc-channel-users)
528 nicks)))
531 "Return an alist of known nicknames on the current server."
538 nicks)))
539 erc-server-users)
540 nicks))))
543 "Return an alist of known nicknames on the current channel."
549 nicks)))
550 erc-channel-users)
551 nicks)))
554 "Sort LIST such that users which have spoken most recently are listed first.
555 LIST must be of the form (USER . CHANNEL-DATA).
557 See also: `erc-get-channel-user-list'."
568 "Sort LIST so that users' nicknames are in alphabetical order.
569 LIST must be of the form (USER . CHANNEL-DATA).
571 See also: `erc-get-channel-user-list'."
586 "List of strings representing channel modes.
600 "Return a copy of STRING will all text-properties removed."
603 newstring))
606 "Prompt used by ERC. Trailing whitespace is not required."
611 "Return the input prompt as a string.
613 See also the variable `erc-prompt'."
616 erc-prompt)))
619 prompt)))
622 "Indicator used by ERC for showing commands.
624 If non-nil, this will be used in the ERC buffer to indicate
625 commands (i.e., input starting with a '/').
627 If nil, the prompt will be constructed from the variable `erc-prompt'."
632 "Return the command indicator prompt as a string.
634 This only has any meaning if the variable `erc-command-indicator' is non-nil."
638 erc-command-indicator)))
641 prompt))))
644 "Prefix for all notices."
649 "Determines how to highlight notices.
650 See `erc-notice-prefix'.
652 The following values are allowed:
654 'prefix - highlight notice prefix only
655 'all - highlight the entire notice
657 Any other value disables notice's highlighting altogether."
664 "List of functions to call to echo a private notice.
665 Each function is called with four arguments, the string
666 to display, the parsed server message, the target buffer (or
667 nil), and the sender. The functions are called in order, until a
668 function evaluates to non-nil. These hooks are called after
669 those specified in `erc-echo-notice-always-hook'.
671 See also: `erc-echo-notice-always-hook',
672 `erc-echo-notice-in-default-buffer',
673 `erc-echo-notice-in-target-buffer',
674 `erc-echo-notice-in-minibuffer',
675 `erc-echo-notice-in-server-buffer',
676 `erc-echo-notice-in-active-non-server-buffer',
677 `erc-echo-notice-in-active-buffer',
678 `erc-echo-notice-in-user-buffers',
679 `erc-echo-notice-in-user-and-target-buffers',
680 `erc-echo-notice-in-first-user-buffer'"
684 erc-echo-notice-in-target-buffer
685 erc-echo-notice-in-minibuffer
686 erc-echo-notice-in-server-buffer
687 erc-echo-notice-in-active-non-server-buffer
688 erc-echo-notice-in-active-buffer
689 erc-echo-notice-in-user-buffers
690 erc-echo-notice-in-user-and-target-buffers
691 erc-echo-notice-in-first-user-buffer))
695 "List of functions to call to echo a private notice.
696 Each function is called with four arguments, the string
697 to display, the parsed server message, the target buffer (or
698 nil), and the sender. The functions are called in order, and all
699 functions are called. These hooks are called before those
700 specified in `erc-echo-notice-hook'.
702 See also: `erc-echo-notice-hook',
703 `erc-echo-notice-in-default-buffer',
704 `erc-echo-notice-in-target-buffer',
705 `erc-echo-notice-in-minibuffer',
706 `erc-echo-notice-in-server-buffer',
707 `erc-echo-notice-in-active-non-server-buffer',
708 `erc-echo-notice-in-active-buffer',
709 `erc-echo-notice-in-user-buffers',
710 `erc-echo-notice-in-user-and-target-buffers',
711 `erc-echo-notice-in-first-user-buffer'"
715 erc-echo-notice-in-target-buffer
716 erc-echo-notice-in-minibuffer
717 erc-echo-notice-in-server-buffer
718 erc-echo-notice-in-active-non-server-buffer
719 erc-echo-notice-in-active-buffer
720 erc-echo-notice-in-user-buffers
721 erc-echo-notice-in-user-and-target-buffers
722 erc-echo-notice-in-first-user-buffer))
724 ;; other tunable parameters
727 "If non-nil, do a whowas on a nick if no such nick."
732 "If non-nil, show every time you get a PING or PONG from the server."
737 "Let others know you are back when you are no longer marked away.
738 This happens in this form:
739 * <nick> is back (gone for <time>)
741 Many consider it impolite to do so automatically."
746 "The nickname to take when you are marked as being away."
749 string))
752 "If non-nil, then all incoming CTCP requests will be shown."
757 "Disable replies to CTCP requests that require a reply.
758 If non-nil, then all incoming CTCP requests that normally require
759 an automatic reply (like VERSION or PING) will be ignored. Good to
760 set if some hacker is trying to flood you away."
765 "Be paranoid, don't give away your machine name."
770 "Prompt for channel key when using `erc-join-channel' interactively."
775 "Use this as your email user ID."
780 "Use this as the name of your system.
781 If nil, ERC will call `system-name' to get this information."
784 string))
787 "List of regexps matching user identifiers to ignore.
790 identifier matches, the message from the person will not be
791 processed."
797 "List of regexps matching user identifiers to ignore completely.
799 This differs from `erc-ignore-list' in that it also ignores any
800 messages directed at the user.
804 If an identifier matches, or a message is addressed to a nick
805 whose identifier matches, the message will not be processed.
807 CAVEAT: ERC doesn't know about the user and host of anyone who
808 was already in the channel when you joined, but never said
809 anything, so it won't be able to match the user and host of those
810 people. You can update the ERC internal info using /WHO *."
815 "If non-nil, flood protection is enabled.
816 Flooding is sending too much information to the server in too
817 short of an interval, which may cause the server to terminate the
818 connection.
822 ;; Script parameters
828 "List of files to try for a startup script.
829 The first existent and readable one will get executed.
831 If the filename ends with `.el' it is presumed to be an Emacs Lisp
832 script and it gets (load)ed. Otherwise it is treated as a bunch of
833 regular IRC commands."
838 "List of directories to look for a script in /load command.
839 The script is first searched in the current directory, then in each
840 directory in the list."
845 "If non-nil, echo the IRC script commands locally."
854 "Kill the channel buffer on PART.
855 This variable should probably stay nil, as ERC can reuse buffers if
856 you rejoin them later."
861 "Kill all query (also channel) buffers of this server on QUIT.
862 See the variable `erc-kill-buffer-on-part' for details."
867 "Kill the server buffer of the process on QUIT."
872 "Alist of possible arguments to the /quit command.
874 Each element has the form:
875 (REGEXP RESULT)
877 If REGEXP matches the argument to /quit, then its relevant RESULT
878 will be used. RESULT may be either a string, or a function. If
879 a function, it should return the quit message as a string.
881 If no elements match, then the empty string is used.
883 As an example:
884 (setq erc-quit-reason-various-alist
890 as the quit message."
895 "Alist of possible arguments to the /part command.
897 Each element has the form:
898 (REGEXP RESULT)
900 If REGEXP matches the argument to /part, then its relevant RESULT
901 will be used. RESULT may be either a string, or a function. If
902 a function, it should return the part message as a string.
904 If no elements match, then the empty string is used.
906 As an example:
907 (setq erc-part-reason-various-alist
913 as the part message."
918 "A function which returns the reason for quitting.
920 The function is passed a single argument, the string typed by the
928 "A function which returns the reason for parting a channel.
930 The function is passed a single argument, the string typed by the
940 ;; variables available for IRC scripts
945 ;; Hooks
948 "Hook variables for fancy customizations of ERC."
952 "Hook run after `erc-mode' setup is finished."
958 "Put functions which should get called more or less periodically here.
959 The idea is that servers always play ping pong with the client, and so there
960 is no need for any idle-timer games with Emacs."
965 "Hook called first when some text is inserted through `erc-display-line'.
966 It gets called with one argument, STRING.
967 To be able to modify the inserted text, use `erc-insert-modify-hook' instead.
968 Filtering functions can set `erc-insert-this' to nil to avoid
969 display of that particular string at all."
974 "Hook called first when some text is sent through `erc-send-current-line'.
975 It gets called with one argument, STRING.
977 To change the text that will be sent, set the variable STR which is
978 used in `erc-send-current-line'.
980 To change the text inserted into the buffer without changing the text
981 that will be sent, use `erc-send-modify-hook' instead.
983 Filtering functions can set `erc-send-this' to nil to avoid sending of
984 that particular string at all and `erc-insert-this' to prevent
985 inserting that particular string into the buffer.
987 Note that it's useless to set `erc-send-this' to nil and
988 `erc-insert-this' to t. ERC is sane enough to not insert the text
989 anyway."
994 "Insert the text into the target buffer or not.
995 Functions on `erc-insert-pre-hook' can set this variable to nil
999 "Send the text to the target or not.
1000 Functions on `erc-send-pre-hook' can set this variable to nil
1004 "Insertion hook for functions that will change the text's appearance.
1005 This hook is called just after `erc-insert-pre-hook' when the value
1006 of `erc-insert-this' is t.
1007 While this hook is run, narrowing is in effect and `current-buffer' is
1008 the buffer where the text got inserted. One possible value to add here
1009 is `erc-fill'."
1014 "This hook is called just after `erc-insert-modify-hook'.
1015 At this point, all modifications from prior hook functions are done."
1019 erc-make-read-only
1020 erc-save-buffer-in-logs))
1023 "Sending hook for functions that will change the text's appearance.
1024 This hook is called just after `erc-send-pre-hook' when the values
1025 of `erc-send-this' and `erc-insert-this' are both t.
1026 While this hook is run, narrowing is in effect and `current-buffer' is
1027 the buffer where the text got inserted.
1029 Note that no function in this hook can change the appearance of the
1030 text that is sent. Only changing the sent text's appearance on the
1031 sending user's screen is possible. One possible value to add here
1032 is `erc-fill'."
1037 "This hook is called just after `erc-send-modify-hook'.
1038 At this point, all modifications from prior hook functions are done.
1039 NOTE: The functions on this hook are called _before_ sending a command
1040 to the server.
1042 This function is called with narrowing, ala `erc-send-modify-hook'."
1052 "Hook called after a message has been parsed by ERC.
1054 The single argument to the functions is the unmodified string
1055 which the local user typed."
1058 ;; mode-specific tables
1065 ;; Make dabbrev-expand useful for nick names
1068 syntax-table)
1080 (define-key map "\C-c\C-a" 'erc-bol)
1081 (define-key map "\C-c\C-b" 'erc-iswitchb)
1082 (define-key map "\C-c\C-c" 'erc-toggle-interpret-controls)
1083 (define-key map "\C-c\C-d" 'erc-input-action)
1084 (define-key map "\C-c\C-e" 'erc-toggle-ctcp-autoresponse)
1085 (define-key map "\C-c\C-f" 'erc-toggle-flood-control)
1086 (define-key map "\C-c\C-i" 'erc-invite-only-mode)
1087 (define-key map "\C-c\C-j" 'erc-join-channel)
1088 (define-key map "\C-c\C-n" 'erc-channel-names)
1089 (define-key map "\C-c\C-o" 'erc-get-channel-mode-from-keypress)
1090 (define-key map "\C-c\C-p" 'erc-part-from-channel)
1091 (define-key map "\C-c\C-q" 'erc-quit-server)
1092 (define-key map "\C-c\C-r" 'erc-remove-text-properties-region)
1093 (define-key map "\C-c\C-t" 'erc-set-topic)
1094 (define-key map "\C-c\C-u" 'erc-kill-input)
1095 (define-key map "\C-c\C-x" 'erc-quit-server)
1099 ;; Suppress `font-lock-fontify-block' key binding since it
1100 ;; destroys face properties.
1101 (define-key map [remap font-lock-fontify-block] 'undefined)
1103 map)
1104 "ERC keymap.")
1106 ;; Faces
1108 ; Honestly, I have a horrible sense of color and the "defaults" below
1109 ; are supposed to be really bad. But colors ARE required in IRC to
1110 ; convey different parts of conversation. If you think you know better
1111 ; defaults - send them to me.
1113 ;; Now colors are a bit nicer, at least to my eyes.
1114 ;; You may still want to change them to better fit your background.-- S.B.
1116 (defgroup erc-faces nil
1117 "Faces for ERC."
1118 :group 'erc)
1120 (defface erc-default-face '((t))
1121 "ERC default face."
1122 :group 'erc-faces)
1124 (defface erc-direct-msg-face '((t :foreground "IndianRed"))
1125 "ERC face used for messages you receive in the main erc buffer."
1126 :group 'erc-faces)
1128 (defface erc-header-line
1129 '((t :foreground "grey20" :background "grey90"))
1130 "ERC face used for the header line.
1132 This will only be used if `erc-header-line-face-method' is non-nil."
1133 :group 'erc-faces)
1135 (defface erc-input-face '((t :foreground "brown"))
1136 "ERC face used for your input."
1137 :group 'erc-faces)
1139 (defface erc-prompt-face
1140 '((t :weight bold :foreground "Black" :background "lightBlue2"))
1141 "ERC face for the prompt."
1142 :group 'erc-faces)
1144 (defface erc-command-indicator-face
1145 '((t :weight bold))
1146 "ERC face for the command indicator.
1147 See the variable `erc-command-indicator'."
1148 :group 'erc-faces)
1150 (defface erc-notice-face
1151 '((default :weight bold)
1152 (((class color) (min-colors 88)) :foreground "SlateBlue")
1153 (t :foreground "blue"))
1154 "ERC face for notices."
1155 :group 'erc-faces)
1157 (defface erc-action-face '((t :weight bold))
1158 "ERC face for actions generated by /ME."
1159 :group 'erc-faces)
1161 (defface erc-error-face '((t :foreground "red"))
1162 "ERC face for errors."
1163 :group 'erc-faces)
1165 ;; same default color as `erc-input-face'
1166 (defface erc-my-nick-face '((t :weight bold :foreground "brown"))
1167 "ERC face for your current nickname in messages sent by you.
1168 See also `erc-show-my-nick'."
1169 :group 'erc-faces)
1171 (defface erc-nick-default-face '((t :weight bold))
1172 "ERC nickname default face."
1173 :group 'erc-faces)
1175 (defface erc-nick-msg-face '((t :weight bold :foreground "IndianRed"))
1176 "ERC nickname face for private messages."
1177 :group 'erc-faces)
1179 ;; Debugging support
1181 (defvar erc-log-p nil
1182 "When set to t, generate debug messages in a separate debug buffer.")
1184 (defvar erc-debug-log-file (expand-file-name "ERC.debug")
1185 "Debug log file name.")
1187 (defvar erc-dbuf nil)
1188 (make-variable-buffer-local 'erc-dbuf)
1190 (defmacro define-erc-module (name alias doc enable-body disable-body
1191 &optional local-p)
1192 "Define a new minor mode using ERC conventions.
1193 Symbol NAME is the name of the module.
1194 Symbol ALIAS is the alias to use, or nil.
1195 DOC is the documentation string to use for the minor mode.
1196 ENABLE-BODY is a list of expressions used to enable the mode.
1197 DISABLE-BODY is a list of expressions used to disable the mode.
1198 If LOCAL-P is non-nil, the mode will be created as a buffer-local
1199 mode, rather than a global one.
1201 This will define a minor mode called erc-NAME-mode, possibly
1202 an alias erc-ALIAS-mode, as well as the helper functions
1203 erc-NAME-enable, and erc-NAME-disable.
1205 Example:
1208 (define-erc-module replace nil
1210 ((add-hook 'erc-insert-modify-hook
1211 'erc-replace-insert))
1212 ((remove-hook 'erc-insert-modify-hook
1213 'erc-replace-insert)))"
1214 (declare (doc-string 3))
1215 (let* ((sn (symbol-name name))
1216 (mode (intern (format "erc-%s-mode" (downcase sn))))
1217 (group (intern (format "erc-%s" (downcase sn))))
1218 (enable (intern (format "erc-%s-enable" (downcase sn))))
1219 (disable (intern (format "erc-%s-disable" (downcase sn)))))
1220 `(progn
1221 (erc-define-minor-mode
1222 ,mode
1223 ,(format "Toggle ERC %S mode.
1224 With a prefix argument ARG, enable %s if ARG is positive,
1225 and disable it otherwise. If called from Lisp, enable the mode
1226 if ARG is omitted or nil.
1227 %s" name name doc)
1228 nil nil nil
1229 :global ,(not local-p) :group (quote ,group)
1230 (if ,mode
1231 (,enable)
1232 (,disable)))
1233 (defun ,enable ()
1234 ,(format "Enable ERC %S mode."
1235 name)
1236 (interactive)
1237 (add-to-list 'erc-modules (quote ,name))
1238 (setq ,mode t)
1239 ,@enable-body)
1240 (defun ,disable ()
1241 ,(format "Disable ERC %S mode."
1242 name)
1243 (interactive)
1244 (setq erc-modules (delq (quote ,name) erc-modules))
1245 (setq ,mode nil)
1246 ,@disable-body)
1247 ,(when (and alias (not (eq name alias)))
1248 `(defalias
1249 (quote
1250 ,(intern
1251 (format "erc-%s-mode"
1252 (downcase (symbol-name alias)))))
1253 (quote
1254 ,mode)))
1255 ;; For find-function and find-variable.
1256 (put ',mode 'definition-name ',name)
1257 (put ',enable 'definition-name ',name)
1258 (put ',disable 'definition-name ',name))))
1260 (defun erc-once-with-server-event (event f)
1261 "Run function F the next time EVENT occurs in the `current-buffer'.
1263 You should make sure that `current-buffer' is a server buffer.
1265 This function temporarily adds a function to EVENT's hook to call F with
1266 two arguments (`proc' and `parsed'). After F is called, the function is
1267 removed from EVENT's hook. F should return either nil
1268 or t, where nil indicates that the other functions on EVENT's hook
1269 should be run too, and t indicates that other functions should
1270 not be run.
1272 Please be sure to use this function in server-buffers. In
1273 channel-buffers it may not work at all, as it uses the LOCAL
1274 argument of `add-hook' and `remove-hook' to ensure multiserver
1275 capabilities."
1276 (unless (erc-server-buffer-p)
1277 (error
1278 "You should only run `erc-once-with-server-event' in a server buffer"))
1279 (let ((fun (make-symbol "fun"))
1280 (hook (erc-get-hook event)))
1281 (put fun 'erc-original-buffer (current-buffer))
1282 (fset fun (lambda (proc parsed)
1283 (with-current-buffer (get fun 'erc-original-buffer)
1284 (remove-hook hook fun t))
1285 (fmakunbound fun)
1286 (funcall f proc parsed)))
1287 (add-hook hook fun nil t)
1288 fun))
1290 (defsubst erc-log (string)
1291 "Logs STRING if logging is on (see `erc-log-p')."
1292 (when erc-log-p
1293 (erc-log-aux string)))
1295 (defun erc-server-buffer ()
1296 "Return the server buffer for the current buffer's process.
1297 The buffer-local variable `erc-server-process' is used to find
1298 the process buffer."
1299 (and (erc-server-buffer-live-p)
1300 (process-buffer erc-server-process)))
1302 (defun erc-server-buffer-live-p ()
1303 "Return t if the server buffer has not been killed."
1304 (and (processp erc-server-process)
1305 (buffer-live-p (process-buffer erc-server-process))))
1307 (defun erc-server-buffer-p (&optional buffer)
1308 "Return non-nil if argument BUFFER is an ERC server buffer.
1310 If BUFFER is nil, the current buffer is used."
1311 (with-current-buffer (or buffer (current-buffer))
1312 (and (eq major-mode 'erc-mode)
1313 (null (erc-default-target)))))
1315 (defun erc-open-server-buffer-p (&optional buffer)
1316 "Return non-nil if argument BUFFER is an ERC server buffer that
1317 has an open IRC process.
1319 If BUFFER is nil, the current buffer is used."
1320 (and (erc-server-buffer-p buffer)
1321 (erc-server-process-alive buffer)))
1323 (defun erc-query-buffer-p (&optional buffer)
1324 "Return non-nil if BUFFER is an ERC query buffer.
1325 If BUFFER is nil, the current buffer is used."
1326 (with-current-buffer (or buffer (current-buffer))
1327 (let ((target (erc-default-target)))
1328 (and (eq major-mode 'erc-mode)
1329 target
1330 (not (memq (aref target 0) '(?# ?& ?+ ?!)))))))
1332 (defun erc-ison-p (nick)
1333 "Return non-nil if NICK is online."
1334 (interactive "sNick: ")
1335 (erc-with-server-buffer
1336 (let ((erc-online-p 'unknown))
1337 (erc-once-with-server-event
1338 303
1339 (lambda (_proc parsed)
1340 (let ((ison (split-string (aref parsed 3))))
1341 (setq erc-online-p (car (erc-member-ignore-case nick ison)))
1342 t)))
1343 (erc-server-send (format "ISON %s" nick))
1344 (while (eq erc-online-p 'unknown) (accept-process-output))
1345 (if (called-interactively-p 'interactive)
1346 (message "%s is %sonline"
1347 (or erc-online-p nick)
1348 (if erc-online-p "" "not "))
1349 erc-online-p))))
1351 (defun erc-log-aux (string)
1352 "Do the debug logging of STRING."
1353 (let ((cb (current-buffer))
1354 (point 1)
1355 (was-eob nil)
1356 (session-buffer (erc-server-buffer)))
1357 (if session-buffer
1358 (progn
1359 (set-buffer session-buffer)
1360 (if (not (and erc-dbuf (bufferp erc-dbuf) (buffer-live-p erc-dbuf)))
1361 (progn
1362 (setq erc-dbuf (get-buffer-create
1363 (concat "*ERC-DEBUG: "
1364 erc-session-server "*")))))
1365 (set-buffer erc-dbuf)
1366 (setq point (point))
1367 (setq was-eob (eobp))
1368 (goto-char (point-max))
1370 (if was-eob (goto-char (point-max))
1371 (goto-char point))
1372 (set-buffer cb))
1373 (message "ERC: ** %s" string))))
1375 ;; Last active buffer, to print server messages in the right place
1377 (defvar erc-active-buffer nil
1378 "The current active buffer, the one where the user typed the last command.
1379 Defaults to the server buffer, and should only be set in the
1380 server buffer.")
1381 (make-variable-buffer-local 'erc-active-buffer)
1383 (defun erc-active-buffer ()
1384 "Return the value of `erc-active-buffer' for the current server.
1385 Defaults to the server buffer."
1386 (erc-with-server-buffer
1387 (if (buffer-live-p erc-active-buffer)
1388 erc-active-buffer
1389 (setq erc-active-buffer (current-buffer)))))
1391 (defun erc-set-active-buffer (buffer)
1392 "Set the value of `erc-active-buffer' to BUFFER."
1393 (cond ((erc-server-buffer)
1394 (with-current-buffer (erc-server-buffer)
1395 (setq erc-active-buffer buffer)))
1396 (t (setq erc-active-buffer buffer))))
1398 ;; Mode activation routines
1400 (define-derived-mode erc-mode fundamental-mode "ERC"
1401 "Major mode for Emacs IRC."
1402 (setq local-abbrev-table erc-mode-abbrev-table)
1403 (when (boundp 'next-line-add-newlines)
1404 (set (make-local-variable 'next-line-add-newlines) nil))
1405 (setq line-move-ignore-invisible t)
1406 (set (make-local-variable 'paragraph-separate)
1408 (set (make-local-variable 'paragraph-start)
1410 (add-hook 'completion-at-point-functions 'erc-complete-word-at-point nil t))
1412 ;; activation
1414 (defconst erc-default-server "irc.freenode.net"
1415 "IRC server to use if it cannot be detected otherwise.")
1417 (defconst erc-default-port 6667
1418 "IRC port to use if it cannot be detected otherwise.")
1420 (defcustom erc-join-buffer 'buffer
1421 "Determines how to display a newly created IRC buffer.
1423 The available choices are:
1425 'window - in another window,
1426 'window-noselect - in another window, but don't select that one,
1427 'frame - in another frame,
1428 'bury - bury it in a new buffer,
1429 'buffer - in place of the current buffer,
1430 any other value - in place of the current buffer."
1431 :group 'erc-buffers
1432 :type '(choice (const :tag "Split window and select" window)
1433 (const :tag "Split window, don't select" window-noselect)
1434 (const :tag "New frame" frame)
1435 (const :tag "Bury in new buffer" bury)
1436 (const :tag "Use current buffer" buffer)
1437 (const :tag "Use current buffer" t)))
1439 (defcustom erc-frame-alist nil
1440 "Alist of frame parameters for creating erc frames.
1441 A value of nil means to use `default-frame-alist'."
1442 :group 'erc-buffers
1443 :type '(repeat (cons :format "%v"
1444 (symbol :tag "Parameter")
1445 (sexp :tag "Value"))))
1447 (defcustom erc-frame-dedicated-flag nil
1448 "Non-nil means the erc frames are dedicated to that buffer.
1449 This only has effect when `erc-join-buffer' is set to `frame'."
1450 :group 'erc-buffers
1451 :type 'boolean)
1453 (defcustom erc-reuse-frames t
1454 "Determines whether new frames are always created.
1455 Non-nil means that a new frame is not created to display an ERC
1456 buffer if there is already a window displaying it. This only has
1457 effect when `erc-join-buffer' is set to `frame'."
1458 :group 'erc-buffers
1459 :type 'boolean)
1461 (defun erc-channel-p (channel)
1462 "Return non-nil if CHANNEL seems to be an IRC channel name."
1463 (cond ((stringp channel)
1464 (memq (aref channel 0) '(?# ?& ?+ ?!)))
1465 ((and (bufferp channel) (buffer-live-p channel))
1466 (with-current-buffer channel
1467 (erc-channel-p (erc-default-target))))
1468 (t nil)))
1470 (defcustom erc-reuse-buffers t
1471 "If nil, create new buffers on joining a channel/query.
1472 If non-nil, a new buffer will only be created when you join
1473 channels with same names on different servers, or have query buffers
1474 open with nicks of the same name on different servers. Otherwise,
1475 the existing buffers will be reused."
1476 :group 'erc-buffers
1477 :type 'boolean)
1479 (defun erc-normalize-port (port)
1480 "Normalize the port specification PORT to integer form.
1481 PORT may be an integer, a string or a symbol. If it is a string or a
1482 symbol, it may have these values:
1483 * irc -> 194
1484 * ircs -> 994
1485 * ircd -> 6667
1486 * ircd-dalnet -> 7000"
1487 (cond
1488 ((symbolp port)
1489 (erc-normalize-port (symbol-name port)))
1490 ((stringp port)
1491 (let ((port-nr (string-to-number port)))
1492 (cond
1493 ((> port-nr 0)
1494 port-nr)
1495 ((string-equal port "irc")
1496 194)
1497 ((string-equal port "ircs")
1498 994)
1499 ((string-equal port "ircd")
1500 6667)
1501 ((string-equal port "ircd-dalnet")
1502 7000)
1503 (t
1504 nil))))
1505 ((numberp port)
1506 port)
1507 (t
1508 nil)))
1510 (defun erc-port-equal (a b)
1511 "Check whether ports A and B are equal."
1512 (= (erc-normalize-port a) (erc-normalize-port b)))
1514 (defun erc-generate-new-buffer-name (server port target)
1515 "Create a new buffer name based on the arguments."
1516 (when (numberp port) (setq port (number-to-string port)))
1517 (let ((buf-name (or target
1518 (or (let ((name (concat server ":" port)))
1519 (when (> (length name) 1)
1520 name))
1521 ;; This fallback should in fact never happen
1522 "*erc-server-buffer*")))
1523 buffer-name)
1524 ;; Reuse existing buffers, but not if the buffer is a connected server
1525 ;; buffer and not if its associated with a different server than the
1526 ;; current ERC buffer.
1527 ;; if buf-name is taken by a different connection (or by something !erc)
1528 ;; then see if "buf-name/server" meets the same criteria
1529 (dolist (candidate (list buf-name (concat buf-name "/" server)))
1530 (if (and (not buffer-name)
1531 erc-reuse-buffers
1532 (get-buffer candidate)
1533 (or target
1534 (with-current-buffer (get-buffer candidate)
1535 (and (erc-server-buffer-p)
1536 (not (erc-server-process-alive)))))
1537 (with-current-buffer (get-buffer candidate)
1538 (and (string= erc-session-server server)
1539 (erc-port-equal erc-session-port port))))
1540 (setq buffer-name candidate)))
1541 ;; if buffer-name is unset, neither candidate worked out for us,
1542 ;; fallback to the old <N> uniquification method:
1543 (or buffer-name (generate-new-buffer-name buf-name)) ))
1545 (defun erc-get-buffer-create (server port target)
1546 "Create a new buffer based on the arguments."
1547 (get-buffer-create (erc-generate-new-buffer-name server port target)))
1550 (defun erc-member-ignore-case (string list)
1551 "Return non-nil if STRING is a member of LIST.
1553 All strings are compared according to IRC protocol case rules, see
1554 `erc-downcase'."
1555 (setq string (erc-downcase string))
1556 (catch 'result
1557 (while list
1558 (if (string= string (erc-downcase (car list)))
1559 (throw 'result list)
1560 (setq list (cdr list))))))
1562 (defmacro erc-with-buffer (spec &rest body)
1563 "Execute BODY in the buffer associated with SPEC.
1565 SPEC should have the form
1567 (TARGET [PROCESS])
1569 If TARGET is a buffer, use it. Otherwise, use the buffer
1570 matching TARGET in the process specified by PROCESS.
1572 If PROCESS is nil, use the current `erc-server-process'.
1573 See `erc-get-buffer' for details.
1575 See also `with-current-buffer'.
1577 \(fn (TARGET [PROCESS]) BODY...)"
1578 (declare (indent 1) (debug ((form &optional form) body)))
1579 (let ((buf (make-symbol "buf"))
1580 (proc (make-symbol "proc"))
1581 (target (make-symbol "target"))
1582 (process (make-symbol "process")))
1583 `(let* ((,target ,(car spec))
1584 (,process ,(cadr spec))
1585 (,buf (if (bufferp ,target)
1586 ,target
1587 (let ((,proc (or ,process
1588 (and (processp erc-server-process)
1589 erc-server-process))))
1590 (if (and ,target ,proc)
1591 (erc-get-buffer ,target ,proc))))))
1592 (when (buffer-live-p ,buf)
1593 (with-current-buffer ,buf
1594 ,@body)))))
1596 (defun erc-get-buffer (target &optional proc)
1597 "Return the buffer matching TARGET in the process PROC.
1598 If PROC is not supplied, all processes are searched."
1599 (let ((downcased-target (erc-downcase target)))
1600 (catch 'buffer
1601 (erc-buffer-filter
1602 (lambda ()
1603 (let ((current (erc-default-target)))
1604 (and (stringp current)
1605 (string-equal downcased-target (erc-downcase current))
1606 (throw 'buffer (current-buffer)))))
1607 proc))))
1609 (defun erc-buffer-filter (predicate &optional proc)
1610 "Return a list of `erc-mode' buffers matching certain criteria.
1611 PREDICATE is a function executed with each buffer, if it returns t, that buffer
1612 is considered a valid match.
1614 PROC is either an `erc-server-process', identifying a certain
1615 server connection, or nil which means all open connections."
1616 (save-excursion
1617 (delq
1618 nil
1619 (mapcar (lambda (buf)
1620 (when (buffer-live-p buf)
1621 (with-current-buffer buf
1622 (and (eq major-mode 'erc-mode)
1623 (or (not proc)
1624 (eq proc erc-server-process))
1625 (funcall predicate)
1626 buf))))
1627 (buffer-list)))))
1629 (defun erc-buffer-list (&optional predicate proc)
1630 "Return a list of ERC buffers.
1631 PREDICATE is a function which executes with every buffer satisfying
1632 the predicate. If PREDICATE is passed as nil, return a list of all ERC
1633 buffers. If PROC is given, the buffers local variable `erc-server-process'
1634 needs to match PROC."
1635 (unless predicate
1636 (setq predicate (lambda () t)))
1637 (erc-buffer-filter predicate proc))
1639 (defmacro erc-with-all-buffers-of-server (process pred &rest forms)
1640 "Execute FORMS in all buffers which have same process as this server.
1641 FORMS will be evaluated in all buffers having the process PROCESS and
1642 where PRED matches or in all buffers of the server process if PRED is
1643 nil."
1644 (declare (indent 1) (debug (form form body)))
1645 ;; Make the evaluation have the correct order
1646 (let ((pre (make-symbol "pre"))
1647 (pro (make-symbol "pro")))
1648 `(let* ((,pro ,process)
1649 (,pre ,pred)
1650 (res (mapcar (lambda (buffer)
1651 (with-current-buffer buffer
1652 ,@forms))
1653 (erc-buffer-list ,pre
1654 ,pro))))
1655 ;; Silence the byte-compiler by binding the result of mapcar to
1656 ;; a variable.
1657 res)))
1659 ;; (iswitchb-mode) will autoload iswitchb.el
1660 (defvar iswitchb-temp-buflist)
1661 (declare-function iswitchb-read-buffer "iswitchb"
1662 (prompt &optional default require-match start matches-set))
1663 (defvar iswitchb-make-buflist-hook)
1665 (defun erc-iswitchb (&optional arg)
1666 "Use `iswitchb-read-buffer' to prompt for a ERC buffer to switch to.
1667 When invoked with prefix argument, use all erc buffers. Without prefix
1668 ARG, allow only buffers related to same session server.
1669 If `erc-track-mode' is in enabled, put the last element of
1670 `erc-modified-channels-alist' in front of the buffer list.
1672 Due to some yet unresolved reason, global function `iswitchb-mode'
1673 needs to be active for this function to work."
1674 (interactive "P")
1675 (let ((enabled (bound-and-true-p iswitchb-mode)))
1676 (or enabled (iswitchb-mode 1))
1677 (unwind-protect
1678 (let ((iswitchb-make-buflist-hook
1679 (lambda ()
1680 (setq iswitchb-temp-buflist
1681 (mapcar 'buffer-name
1682 (erc-buffer-list
1683 nil
1684 (when arg erc-server-process)))))))
1685 (switch-to-buffer
1686 (iswitchb-read-buffer
1687 "Switch-to: "
1688 (if (boundp 'erc-modified-channels-alist)
1689 (buffer-name (caar (last erc-modified-channels-alist)))
1690 nil)
1691 t)))
1692 (or enabled (iswitchb-mode -1)))))
1694 (defun erc-channel-list (proc)
1695 "Return a list of channel buffers.
1696 PROC is the process for the server connection. If PROC is nil, return
1697 all channel buffers on all servers."
1698 (erc-buffer-filter
1699 (lambda ()
1700 (and (erc-default-target)
1701 (erc-channel-p (erc-default-target))))
1702 proc))
1704 (defun erc-buffer-list-with-nick (nick proc)
1705 "Return buffers containing NICK in the `erc-channel-users' list."
1706 (with-current-buffer (process-buffer proc)
1707 (let ((user (gethash (erc-downcase nick) erc-server-users)))
1708 (if user
1709 (erc-server-user-buffers user)
1710 nil))))
1712 ;; Some local variables
1714 (defvar erc-default-recipients nil
1715 "List of default recipients of the current buffer.")
1716 (make-variable-buffer-local 'erc-default-recipients)
1718 (defvar erc-session-user-full-name nil
1719 "Full name of the user on the current server.")
1720 (make-variable-buffer-local 'erc-session-user-full-name)
1722 (defvar erc-channel-user-limit nil
1723 "Limit of users per channel.")
1724 (make-variable-buffer-local 'erc-channel-user-limit)
1726 (defvar erc-channel-key nil
1727 "Key needed to join channel.")
1728 (make-variable-buffer-local 'erc-channel-key)
1730 (defvar erc-invitation nil
1731 "Last invitation channel.")
1732 (make-variable-buffer-local 'erc-invitation)
1734 (defvar erc-away nil
1735 "Non-nil indicates that we are away.
1737 Use `erc-away-time' to access this if you might be in a channel
1738 buffer rather than a server buffer.")
1739 (make-variable-buffer-local 'erc-away)
1741 (defvar erc-channel-list nil
1742 "Server channel list.")
1743 (make-variable-buffer-local 'erc-channel-list)
1745 (defvar erc-bad-nick nil
1746 "Non-nil indicates that we got a `nick in use' error while connecting.")
1747 (make-variable-buffer-local 'erc-bad-nick)
1749 (defvar erc-logged-in nil
1750 "Non-nil indicates that we are logged in.")
1751 (make-variable-buffer-local 'erc-logged-in)
1753 (defvar erc-default-nicks nil
1754 "The local copy of `erc-nick' - the list of nicks to choose from.")
1755 (make-variable-buffer-local 'erc-default-nicks)
1757 (defvar erc-nick-change-attempt-count 0
1758 "Used to keep track of how many times an attempt at changing nick is made.")
1759 (make-variable-buffer-local 'erc-nick-change-attempt-count)
1761 (defun erc-migrate-modules (mods)
1762 "Migrate old names of ERC modules to new ones."
1763 ;; modify `transforms' to specify what needs to be changed
1764 ;; each item is in the format '(old . new)
1765 (let ((transforms '((pcomplete . completion))))
1766 (erc-delete-dups
1767 (mapcar (lambda (m) (or (cdr (assoc m transforms)) m))
1768 mods))))
1770 (defcustom erc-modules '(netsplit fill button match track completion readonly
1771 networks ring autojoin noncommands irccontrols
1772 move-to-prompt stamp menu list)
1773 "A list of modules which ERC should enable.
1774 If you set the value of this without using `customize' remember to call
1775 \(erc-update-modules) after you change it. When using `customize', modules
1776 removed from the list will be disabled."
1777 :get (lambda (sym)
1778 ;; replace outdated names with their newer equivalents
1779 (erc-migrate-modules (symbol-value sym)))
1780 :set (lambda (sym val)
1781 ;; disable modules which have just been removed
1782 (when (and (boundp 'erc-modules) erc-modules val)
1783 (dolist (module erc-modules)
1784 (unless (member module val)
1785 (let ((f (intern-soft (format "erc-%s-mode" module))))
1786 (when (and (fboundp f) (boundp f) (symbol-value f))
1787 (message "Disabling `erc-%s'" module)
1788 (funcall f 0))))))
1789 (set sym val)
1790 ;; this test is for the case where erc hasn't been loaded yet
1791 (when (fboundp 'erc-update-modules)
1792 (erc-update-modules)))
1793 :type
1794 '(set
1795 :greedy t
1796 (const :tag "autoaway: Set away status automatically" autoaway)
1797 (const :tag "autojoin: Join channels automatically" autojoin)
1798 (const :tag "button: Buttonize URLs, nicknames, and other text" button)
1799 (const :tag "capab: Mark unidentified users on servers supporting CAPAB"
1800 capab-identify)
1801 (const :tag "completion: Complete nicknames and commands (programmable)"
1802 completion)
1803 (const :tag "hecomplete: Complete nicknames and commands (obsolete, use \"completion\")" hecomplete)
1804 (const :tag "dcc: Provide Direct Client-to-Client support" dcc)
1805 (const :tag "fill: Wrap long lines" fill)
1806 (const :tag "identd: Launch an identd server on port 8113" identd)
1807 (const :tag "irccontrols: Highlight or remove IRC control characters"
1808 irccontrols)
1809 (const :tag "keep-place: Leave point above un-viewed text" keep-place)
1810 (const :tag "list: List channels in a separate buffer" list)
1811 (const :tag "log: Save buffers in logs" log)
1812 (const :tag "match: Highlight pals, fools, and other keywords" match)
1813 (const :tag "menu: Display a menu in ERC buffers" menu)
1814 (const :tag "move-to-prompt: Move to the prompt when typing text"
1815 move-to-prompt)
1816 (const :tag "netsplit: Detect netsplits" netsplit)
1817 (const :tag "networks: Provide data about IRC networks" networks)
1818 (const :tag "noncommands: Don't display non-IRC commands after evaluation"
1819 noncommands)
1820 (const :tag
1821 "notify: Notify when the online status of certain users changes"
1822 notify)
1823 (const :tag "notifications: Send notifications on PRIVMSG or nickname mentions"
1824 notifications)
1825 (const :tag "page: Process CTCP PAGE requests from IRC" page)
1826 (const :tag "readonly: Make displayed lines read-only" readonly)
1827 (const :tag "replace: Replace text in messages" replace)
1828 (const :tag "ring: Enable an input history" ring)
1829 (const :tag "scrolltobottom: Scroll to the bottom of the buffer"
1830 scrolltobottom)
1831 (const :tag "services: Identify to Nickserv (IRC Services) automatically"
1832 services)
1833 (const :tag "smiley: Convert smileys to pretty icons" smiley)
1834 (const :tag "sound: Play sounds when you receive CTCP SOUND requests"
1835 sound)
1836 (const :tag "stamp: Add timestamps to messages" stamp)
1837 (const :tag "spelling: Check spelling" spelling)
1838 (const :tag "track: Track channel activity in the mode-line" track)
1839 (const :tag "truncate: Truncate buffers to a certain size" truncate)
1840 (const :tag "unmorse: Translate morse code in messages" unmorse)
1841 (const :tag "xdcc: Act as an XDCC file-server" xdcc)
1842 (repeat :tag "Others" :inline t symbol))
1843 :group 'erc)
1845 (defun erc-update-modules ()
1846 "Run this to enable erc-foo-mode for all modules in `erc-modules'."
1847 (let (req)
1848 (dolist (mod erc-modules)
1849 (setq req (concat "erc-" (symbol-name mod)))
1850 (cond
1851 ;; yuck. perhaps we should bring the filenames into sync?
1852 ((string= req "erc-capab-identify")
1853 (setq req "erc-capab"))
1854 ((string= req "erc-completion")
1855 (setq req "erc-pcomplete"))
1856 ((string= req "erc-pcomplete")
1857 (setq mod 'completion))
1858 ((string= req "erc-autojoin")
1859 (setq req "erc-join")))
1860 (condition-case nil
1861 (require (intern req))
1862 (error nil))
1863 (let ((sym (intern-soft (concat "erc-" (symbol-name mod) "-mode"))))
1864 (if (fboundp sym)
1865 (funcall sym 1)
1866 (error "`%s' is not a known ERC module" mod))))))
1868 (defun erc-setup-buffer (buffer)
1869 "Consults `erc-join-buffer' to find out how to display `BUFFER'."
1870 (pcase erc-join-buffer
1871 (`window
1872 (if (active-minibuffer-window)
1873 (display-buffer buffer)
1874 (switch-to-buffer-other-window buffer)))
1875 (`window-noselect
1876 (display-buffer buffer))
1877 (`bury
1878 nil)
1879 (`frame
1880 (when (or (not erc-reuse-frames)
1881 (not (get-buffer-window buffer t)))
1882 (let ((frame (make-frame (or erc-frame-alist
1883 default-frame-alist))))
1884 (raise-frame frame)
1885 (select-frame frame))
1886 (switch-to-buffer buffer)
1887 (when erc-frame-dedicated-flag
1888 (set-window-dedicated-p (selected-window) t))))
1889 (_
1890 (if (active-minibuffer-window)
1891 (display-buffer buffer)
1892 (switch-to-buffer buffer)))))
1894 (defun erc-open (&optional server port nick full-name
1895 connect passwd tgt-list channel process)
1896 "Connect to SERVER on PORT as NICK with FULL-NAME.
1898 If CONNECT is non-nil, connect to the server. Otherwise assume
1899 already connected and just create a separate buffer for the new
1900 target CHANNEL.
1902 Use PASSWD as user password on the server. If TGT-LIST is
1903 non-nil, use it to initialize `erc-default-recipients'.
1905 Returns the buffer for the given server or channel."
1906 (let ((server-announced-name (when (and (boundp 'erc-session-server)
1907 (string= server erc-session-server))
1908 erc-server-announced-name))
1909 (connected-p (unless connect erc-server-connected))
1910 (buffer (erc-get-buffer-create server port channel))
1911 (old-buffer (current-buffer))
1912 old-point
1913 continued-session)
1914 (when connect (run-hook-with-args 'erc-before-connect server port nick))
1915 (erc-update-modules)
1916 (set-buffer buffer)
1917 (setq old-point (point))
1918 (erc-mode)
1919 (setq erc-server-announced-name server-announced-name)
1920 (setq erc-server-connected connected-p)
1921 ;; connection parameters
1922 (setq erc-server-process process)
1923 (setq erc-insert-marker (make-marker))
1924 (setq erc-input-marker (make-marker))
1925 ;; go to the end of the buffer and open a new line
1926 ;; (the buffer may have existed)
1927 (goto-char (point-max))
1928 (forward-line 0)
1929 (when (get-text-property (point) 'erc-prompt)
1930 (setq continued-session t)
1931 (set-marker erc-input-marker
1932 (or (next-single-property-change (point) 'erc-prompt)
1933 (point-max))))
1934 (unless continued-session
1935 (goto-char (point-max))
1937 (set-marker erc-insert-marker (point))
1938 ;; stack of default recipients
1939 (setq erc-default-recipients tgt-list)
1940 (setq erc-server-current-nick nil)
1941 ;; Initialize erc-server-users and erc-channel-users
1942 (if connect
1943 (progn ;; server buffer
1944 (setq erc-server-users
1945 (make-hash-table :test 'equal))
1946 (setq erc-channel-users nil))
1947 (progn ;; target buffer
1948 (setq erc-server-users nil)
1949 (setq erc-channel-users
1950 (make-hash-table :test 'equal))))
1951 ;; clear last incomplete line read
1952 (setq erc-server-filter-data nil)
1953 (setq erc-channel-topic "")
1954 ;; limit on the number of users on the channel (mode +l)
1955 (setq erc-channel-user-limit nil)
1956 (setq erc-channel-key nil)
1957 ;; last active buffer, defaults to this one
1958 (erc-set-active-buffer buffer)
1959 ;; last invitation channel
1960 (setq erc-invitation nil)
1961 ;; Server channel list
1962 (setq erc-channel-list ())
1963 ;; login-time 'nick in use' error
1964 (setq erc-bad-nick nil)
1965 ;; whether we have logged in
1966 (setq erc-logged-in nil)
1967 ;; The local copy of `erc-nick' - the list of nicks to choose
1968 (setq erc-default-nicks (if (consp erc-nick) erc-nick (list erc-nick)))
1969 ;; password stuff
1970 (setq erc-session-password
1971 (or passwd
1972 (let ((secret
1973 (plist-get
1974 (nth 0
1975 (auth-source-search :host server
1976 :max 1
1977 :user nick
1978 :port port
1979 :require '(:secret)))
1980 :secret)))
1981 (if (functionp secret)
1982 (funcall secret)
1983 secret))))
1984 ;; debug output buffer
1985 (setq erc-dbuf
1986 (when erc-log-p
1987 (get-buffer-create (concat "*ERC-DEBUG: " server "*"))))
1988 ;; set up prompt
1989 (unless continued-session
1990 (goto-char (point-max))
1992 (if continued-session
1993 (goto-char old-point)
1994 (set-marker erc-insert-marker (point))
1995 (erc-display-prompt)
1996 (goto-char (point-max)))
1998 (erc-determine-parameters server port nick full-name)
2000 ;; Saving log file on exit
2001 (run-hook-with-args 'erc-connect-pre-hook buffer)
2003 (when connect
2004 (erc-server-connect erc-session-server erc-session-port buffer))
2005 (erc-update-mode-line)
2007 ;; Now display the buffer in a window as per user wishes.
2008 (unless (eq buffer old-buffer)
2009 (when erc-log-p
2010 ;; we can't log to debug buffer, it may not exist yet
2011 (message "erc: old buffer %s, switching to %s"
2012 old-buffer buffer))
2013 (erc-setup-buffer buffer))
2015 buffer))
2017 (defun erc-initialize-log-marker (buffer)
2018 "Initialize the `erc-last-saved-position' marker to a sensible position.
2019 BUFFER is the current buffer."
2020 (with-current-buffer buffer
2021 (setq erc-last-saved-position (make-marker))
2022 (move-marker erc-last-saved-position
2023 (1- (marker-position erc-insert-marker)))))
2025 ;; interactive startup
2027 (defvar erc-server-history-list nil
2028 "IRC server interactive selection history list.")
2030 (defvar erc-nick-history-list nil
2031 "Nickname interactive selection history list.")
2033 (defun erc-already-logged-in (server port nick)
2034 "Return the buffers corresponding to a NICK on PORT of a session SERVER.
2035 This is determined by looking for the appropriate buffer and checking
2036 whether the connection is still alive.
2037 If no buffer matches, return nil."
2038 (erc-buffer-list
2039 (lambda ()
2040 (and (erc-server-process-alive)
2041 (string= erc-session-server server)
2042 (erc-port-equal erc-session-port port)
2043 (erc-current-nick-p nick)))))
2045 (defcustom erc-before-connect nil
2046 "Hook called before connecting to a server.
2047 This hook gets executed before `erc' actually invokes `erc-mode'
2048 with your input data. The functions in here get called with three
2049 parameters, SERVER, PORT and NICK."
2050 :group 'erc-hooks
2051 :type 'hook)
2053 (defcustom erc-after-connect nil
2054 "Hook called after connecting to a server.
2055 This hook gets executed when an end of MOTD has been received. All
2056 functions in here get called with the parameters SERVER and NICK."
2057 :group 'erc-hooks
2058 :type 'hook)
2060 ;;;###autoload
2061 (defun erc-select-read-args ()
2062 "Prompt the user for values of nick, server, port, and password."
2063 (let (user-input server port nick passwd)
2064 (setq user-input (read-from-minibuffer
2065 "IRC server: "
2066 (erc-compute-server) nil nil 'erc-server-history-list))
2069 (setq port (erc-string-to-port (match-string 2 user-input))
2070 user-input (match-string 1 user-input))
2071 (setq port
2072 (erc-string-to-port (read-from-minibuffer
2073 "IRC port: " (erc-port-to-string
2074 (erc-compute-port))))))
2077 (setq nick (match-string 1 user-input)
2078 user-input (match-string 2 user-input))
2079 (setq nick
2080 (if (erc-already-logged-in server port nick)
2081 (read-from-minibuffer
2082 (erc-format-message 'nick-in-use ?n nick)
2083 nick
2084 nil nil 'erc-nick-history-list)
2085 (read-from-minibuffer
2086 "Nickname: " (erc-compute-nick nick)
2087 nil nil 'erc-nick-history-list))))
2089 (setq server user-input)
2091 (setq passwd (if erc-prompt-for-password
2092 (if (and erc-password
2093 (y-or-n-p "Use the default password? "))
2094 erc-password
2095 (read-passwd "Password: "))
2096 erc-password))
2097 (when (and passwd (string= "" passwd))
2098 (setq passwd nil))
2100 (while (erc-already-logged-in server port nick)
2101 ;; hmm, this is a problem when using multiple connections to a bnc
2102 ;; with the same nick. Currently this code prevents using more than one
2103 ;; bnc with the same nick. actually it would be nice to have
2104 ;; bncs transparent, so that erc-compute-buffer-name displays
2105 ;; the server one is connected to.
2106 (setq nick (read-from-minibuffer
2107 (erc-format-message 'nick-in-use ?n nick)
2108 nick
2109 nil nil 'erc-nick-history-list)))
2110 (list :server server :port port :nick nick :password passwd)))
2112 ;;;###autoload
2113 (cl-defun erc (&key (server (erc-compute-server))
2114 (port (erc-compute-port))
2115 (nick (erc-compute-nick))
2116 password
2117 (full-name (erc-compute-full-name)))
2118 "ERC is a powerful, modular, and extensible IRC client.
2119 This function is the main entry point for ERC.
2121 It permits you to select connection parameters, and then starts ERC.
2123 Non-interactively, it takes the keyword arguments
2124 (server (erc-compute-server))
2125 (port (erc-compute-port))
2126 (nick (erc-compute-nick))
2127 password
2128 (full-name (erc-compute-full-name)))
2130 That is, if called with
2134 then the server and full-name will be set to those values, whereas
2135 `erc-compute-port', `erc-compute-nick' and `erc-compute-full-name' will
2136 be invoked for the values of the other parameters."
2137 (interactive (erc-select-read-args))
2138 (erc-open server port nick full-name t password))
2140 ;;;###autoload
2141 (defalias 'erc-select 'erc)
2142 (defalias 'erc-ssl 'erc-tls)
2144 ;;;###autoload
2145 (defun erc-tls (&rest r)
2146 "Interactively select TLS connection parameters and run ERC.
2147 Arguments are the same as for `erc'."
2148 (interactive (erc-select-read-args))
2149 (let ((erc-server-connect-function 'erc-open-tls-stream))
2150 (apply 'erc r)))
2152 (defun erc-open-tls-stream (name buffer host port)
2153 "Open an TLS stream to an IRC server.
2154 The process will be given the name NAME, its target buffer will be
2155 BUFFER. HOST and PORT specify the connection target."
2156 (open-network-stream name buffer host port
2157 :type 'tls))
2159 ;;; Displaying error messages
2161 (defun erc-error (&rest args)
2162 "Pass ARGS to `format', and display the result as an error message.
2163 If `debug-on-error' is set to non-nil, then throw a real error with this
2164 message instead, to make debugging easier."
2165 (if debug-on-error
2166 (apply #'error args)
2167 (apply #'message args)
2168 (beep)))
2170 ;;; Debugging the protocol
2172 (defvar erc-debug-irc-protocol nil
2175 The buffer is created if it doesn't exist.
2177 NOTE: If this variable is non-nil, and you kill the only
2179 but you won't see it.
2181 WARNING: Do not set this variable directly! Instead, use the
2182 function `erc-toggle-debug-irc-protocol' to toggle its value.")
2184 (declare-function erc-network-name "erc-networks" ())
2186 (defun erc-log-irc-protocol (string &optional outbound)
2187 "Append STRING to the buffer *erc-protocol*.
2189 This only has any effect if `erc-debug-irc-protocol' is non-nil.
2191 The buffer is created if it doesn't exist.
2193 If OUTBOUND is non-nil, STRING is being sent to the IRC server
2194 and appears in face `erc-input-face' in the buffer."
2195 (when erc-debug-irc-protocol
2196 (let ((network-name (or (ignore-errors (erc-network-name))
2197 "???")))
2198 (with-current-buffer (get-buffer-create "*erc-protocol*")
2199 (save-excursion
2200 (goto-char (point-max))
2201 (let ((inhibit-read-only t))
2202 (insert (if (not outbound)
2203 ;; Cope with the fact that string might
2204 ;; contain multiple lines of text.
2205 (let ((lines (delete "" (split-string string
2207 (result ""))
2208 (dolist (line lines)
2209 (setq result (concat result network-name
2211 result)
2212 (erc-propertize
2213 (concat network-name " >> " string
2215 (aref string
2216 (1- (length string))))
2218 'face 'erc-input-face)))))
2219 (let ((orig-win (selected-window))
2220 (debug-buffer-window (get-buffer-window (current-buffer) t)))
2221 (when debug-buffer-window
2222 (select-window debug-buffer-window)
2223 (when (= 1 (count-lines (point) (point-max)))
2224 (goto-char (point-max))
2225 (recenter -1))
2226 (select-window orig-win)))))))
2228 (defun erc-toggle-debug-irc-protocol (&optional arg)
2229 "Toggle the value of `erc-debug-irc-protocol'.
2231 If ARG is non-nil, show the *erc-protocol* buffer."
2232 (interactive "P")
2233 (let* ((buf (get-buffer-create "*erc-protocol*")))
2234 (with-current-buffer buf
2235 (erc-view-mode-enter)
2236 (when (null (current-local-map))
2237 (let ((inhibit-read-only t))
2238 (insert (erc-make-notice "This buffer displays all IRC protocol traffic exchanged with each server.\n"))
2240 (use-local-map (make-sparse-keymap))
2241 (local-set-key (kbd "t") 'erc-toggle-debug-irc-protocol))
2242 (add-hook 'kill-buffer-hook
2243 #'(lambda () (setq erc-debug-irc-protocol nil))
2244 nil 'local)
2245 (goto-char (point-max))
2246 (let ((inhibit-read-only t))
2247 (insert (erc-make-notice
2249 (if erc-debug-irc-protocol "disabled" "enabled")
2250 (current-time-string))))))
2251 (setq erc-debug-irc-protocol (not erc-debug-irc-protocol))
2252 (if (and arg
2253 (not (get-buffer-window "*erc-protocol*" t)))
2254 (display-buffer buf t))
2255 (message "IRC protocol traffic logging %s (see buffer *erc-protocol*)."
2256 (if erc-debug-irc-protocol "enabled" "disabled"))))
2258 ;;; I/O interface
2260 ;; send interface
2262 (defun erc-send-action (tgt str &optional force)
2263 "Send CTCP ACTION information described by STR to TGT."
2264 (erc-send-ctcp-message tgt (format "ACTION %s" str) force)
2265 (erc-display-message
2266 nil 'input (current-buffer)
2267 'ACTION ?n (erc-current-nick) ?a str ?u "" ?h ""))
2269 ;; Display interface
2271 (defun erc-string-invisible-p (string)
2272 "Check whether STRING is invisible or not.
2273 I.e. any char in it has the `invisible' property set."
2274 (text-property-any 0 (length string) 'invisible t string))
2276 (defcustom erc-remove-parsed-property t
2277 "Whether to remove the erc-parsed text property after displaying a message.
2279 The default is to remove it, since it causes ERC to take up extra
2280 memory. If you have code that relies on this property, then set
2281 this option to nil."
2282 :type 'boolean
2283 :group 'erc)
2285 (defun erc-display-line-1 (string buffer)
2286 "Display STRING in `erc-mode' BUFFER.
2287 Auxiliary function used in `erc-display-line'. The line gets filtered to
2288 interpret the control characters. Then, `erc-insert-pre-hook' gets called.
2289 If `erc-insert-this' is still t, STRING gets inserted into the buffer.
2290 Afterwards, `erc-insert-modify' and `erc-insert-post-hook' get called.
2291 If STRING is nil, the function does nothing."
2292 (when string
2293 (with-current-buffer (or buffer (process-buffer erc-server-process))
2294 (let ((insert-position (or (marker-position erc-insert-marker)
2295 (point-max))))
2296 (let ((string string) ;; FIXME! Can this be removed?
2297 (buffer-undo-list t)
2298 (inhibit-read-only t))
2301 (when (erc-string-invisible-p string)
2302 (erc-put-text-properties 0 (length string)
2303 '(invisible intangible) string)))
2304 (erc-log (concat "erc-display-line: " string
2305 (format "(%S)" string) " in buffer "
2306 (format "%s" buffer)))
2307 (setq erc-insert-this t)
2308 (run-hook-with-args 'erc-insert-pre-hook string)
2309 (if (null erc-insert-this)
2310 ;; Leave erc-insert-this set to t as much as possible. Fran
2311 ;; Litterio <franl> has seen erc-insert-this set to nil while
2312 ;; erc-send-pre-hook is running, which should never happen. This
2313 ;; may cure it.
2314 (setq erc-insert-this t)
2315 (save-excursion ;; to restore point in the new buffer
2316 (save-restriction
2317 (widen)
2318 (goto-char insert-position)
2319 (insert-before-markers string)
2320 ;; run insertion hook, with point at restored location
2321 (save-restriction
2322 (narrow-to-region insert-position (point))
2323 (run-hooks 'erc-insert-modify-hook)
2324 (run-hooks 'erc-insert-post-hook)
2325 (when erc-remove-parsed-property
2326 (remove-text-properties (point-min) (point-max)
2327 '(erc-parsed nil))))))))
2328 (erc-update-undo-list (- (or (marker-position erc-insert-marker)
2329 (point-max))
2330 insert-position))))))
2332 (defun erc-update-undo-list (shift)
2333 ;; Translate buffer positions in buffer-undo-list by SHIFT.
2334 (unless (or (zerop shift) (atom buffer-undo-list))
2335 (let ((list buffer-undo-list) elt)
2336 (while list
2337 (setq elt (car list))
2338 (cond ((integerp elt) ; POSITION
2339 (cl-incf (car list) shift))
2340 ((or (atom elt) ; nil, EXTENT
2341 ;; (eq t (car elt)) ; (t . TIME)
2342 (markerp (car elt))) ; (MARKER . DISTANCE)
2343 nil)
2344 ((integerp (car elt)) ; (BEGIN . END)
2345 (cl-incf (car elt) shift)
2346 (cl-incf (cdr elt) shift))
2347 ((stringp (car elt)) ; (TEXT . POSITION)
2348 (cl-incf (cdr elt) (* (if (natnump (cdr elt)) 1 -1) shift)))
2349 ((null (car elt)) ; (nil PROPERTY VALUE BEG . END)
2350 (let ((cons (nthcdr 3 elt)))
2351 (cl-incf (car cons) shift)
2352 (cl-incf (cdr cons) shift)))
2353 ((and (featurep 'xemacs)
2354 (extentp (car elt))) ; (EXTENT START END)
2355 (cl-incf (nth 1 elt) shift)
2356 (cl-incf (nth 2 elt) shift)))
2357 (setq list (cdr list))))))
2360 "Regexp which matches all valid characters in a IRC nickname.")
2362 (defun erc-is-valid-nick-p (nick)
2363 "Check if NICK is a valid IRC nickname."
2364 (string-match (concat "^" erc-valid-nick-regexp "$") nick))
2366 (defun erc-display-line (string &optional buffer)
2367 "Display STRING in the ERC BUFFER.
2368 All screen output must be done through this function. If BUFFER is nil
2369 or omitted, the default ERC buffer for the `erc-session-server' is used.
2370 The BUFFER can be an actual buffer, a list of buffers, 'all or 'active.
2371 If BUFFER = 'all, the string is displayed in all the ERC buffers for the
2372 current session. 'active means the current active buffer
2373 \(`erc-active-buffer'). If the buffer can't be resolved, the current
2374 buffer is used. `erc-display-line-1' is used to display STRING.
2376 If STRING is nil, the function does nothing."
2377 (let ((inhibit-point-motion-hooks t)
2378 new-bufs)
2379 (dolist (buf (cond
2380 ((bufferp buffer) (list buffer))
2381 ((listp buffer) buffer)
2382 ((processp buffer) (list (process-buffer buffer)))
2383 ((eq 'all buffer)
2384 ;; Hmm, or all of the same session server?
2385 (erc-buffer-list nil erc-server-process))
2386 ((and (eq 'active buffer) (erc-active-buffer))
2387 (list (erc-active-buffer)))
2388 ((erc-server-buffer-live-p)
2389 (list (process-buffer erc-server-process)))
2390 (t (list (current-buffer)))))
2391 (when (buffer-live-p buf)
2392 (erc-display-line-1 string buf)
2393 (push buf new-bufs)))
2394 (when (null new-bufs)
2395 (erc-display-line-1 string (if (erc-server-buffer-live-p)
2396 (process-buffer erc-server-process)
2397 (current-buffer))))))
2399 (defun erc-display-message-highlight (type string)
2400 "Highlight STRING according to TYPE, where erc-TYPE-face is an ERC face.
2402 See also `erc-make-notice'."
2403 (cond ((eq type 'notice)
2404 (erc-make-notice string))
2405 (t
2406 (erc-put-text-property
2407 0 (length string)
2408 'face (or (intern-soft
2409 (concat "erc-" (symbol-name type) "-face"))
2410 "erc-default-face")
2411 string)
2412 string)))
2414 (defvar erc-lurker-state nil
2415 "Track the time of the last PRIVMSG for each (server,nick) pair.
2417 This is implemented as a hash of hashes, where the outer key is
2418 the canonicalized server name (as returned by
2419 `erc-canonicalize-server-name') and the outer value is a hash
2420 table mapping nicks (as returned by `erc-lurker-maybe-trim') to
2421 the times of their most recently received PRIVMSG on any channel
2422 on the given server.")
2424 (defcustom erc-lurker-trim-nicks t
2425 "If t, trim trailing `erc-lurker-ignore-chars' from nicks.
2427 This causes e.g. nick and nick` to be considered as the same
2428 individual for activity tracking and lurkiness detection
2429 purposes."
2430 :group 'erc-lurker
2431 :type 'boolean)
2433 (defcustom erc-lurker-ignore-chars "`_"
2434 "Characters at the end of a nick to strip for activity tracking purposes.
2436 See also `erc-lurker-trim-nicks'."
2437 :group 'erc-lurker
2438 :type 'string)
2440 (defun erc-lurker-maybe-trim (nick)
2441 "Maybe trim trailing `erc-lurker-ignore-chars' from NICK.
2443 Returns NICK unmodified unless `erc-lurker-trim-nicks' is
2444 non-nil."
2445 (if erc-lurker-trim-nicks
2446 (replace-regexp-in-string
2447 (format "[%s]"
2448 (mapconcat (lambda (char)
2449 (regexp-quote (char-to-string char)))
2450 erc-lurker-ignore-chars ""))
2451 "" nick)
2452 nick))
2454 (defcustom erc-lurker-hide-list nil
2455 "List of IRC type messages to hide when sent by lurkers.
2458 See also `erc-lurker-p' and `erc-hide-list'."
2459 :group 'erc-lurker
2460 :type 'erc-message-type)
2462 (defcustom erc-lurker-threshold-time (* 60 60 24) ; 24h by default
2463 "Nicks from which no PRIVMSGs have been received within this
2464 interval (in units of seconds) are considered lurkers by
2465 `erc-lurker-p' and as a result their messages of types in
2466 `erc-lurker-hide-list' will be hidden."
2467 :group 'erc-lurker
2468 :type 'integer)
2470 (defun erc-lurker-initialize ()
2471 "Initialize ERC lurker tracking functionality.
2473 This function adds `erc-lurker-update-status' to
2474 `erc-insert-pre-hook' in order to record the time of each nick's
2475 most recent PRIVMSG as well as initializing the state variable
2476 storing this information."
2477 (setq erc-lurker-state (make-hash-table :test 'equal))
2478 (add-hook 'erc-insert-pre-hook 'erc-lurker-update-status))
2480 (defun erc-lurker-cleanup ()
2481 "Remove all last PRIVMSG state older than `erc-lurker-threshold-time'.
2483 This should be called regularly to avoid excessive resource
2484 consumption for long-lived IRC or Emacs sessions."
2485 (maphash
2486 (lambda (server hash)
2487 (maphash
2488 (lambda (nick last-PRIVMSG-time)
2489 (when
2490 (> (float-time (time-subtract
2491 (current-time)
2492 last-PRIVMSG-time))
2493 erc-lurker-threshold-time)
2494 (remhash nick hash)))
2495 hash)
2496 (if (zerop (hash-table-count hash))
2497 (remhash server erc-lurker-state)))
2498 erc-lurker-state))
2500 (defvar erc-lurker-cleanup-count 0
2501 "Internal counter variable for use with `erc-lurker-cleanup-interval'.")
2503 (defvar erc-lurker-cleanup-interval 100
2504 "Frequency of cleaning up stale erc-lurker state.
2506 `erc-lurker-update-status' calls `erc-lurker-cleanup' once for
2507 every `erc-lurker-cleanup-interval' updates to
2508 `erc-lurker-state'. This is designed to limit the memory
2509 consumption of lurker state during long Emacs sessions and/or ERC
2510 sessions with large numbers of incoming PRIVMSGs.")
2512 (defun erc-lurker-update-status (_message)
2513 "Update `erc-lurker-state' if necessary.
2515 This function is called from `erc-insert-pre-hook'. If the
2516 current message is a PRIVMSG, update `erc-lurker-state' to
2517 reflect the fact that its sender has issued a PRIVMSG at the
2518 current time. Otherwise, take no action.
2520 This function depends on the fact that `erc-display-message'
2521 dynamically binds `parsed', which is used to check if the current
2522 message is a PRIVMSG and to determine its sender. See also
2523 `erc-lurker-trim-nicks' and `erc-lurker-ignore-chars'.
2525 In order to limit memory consumption, this function also calls
2526 `erc-lurker-cleanup' once every `erc-lurker-cleanup-interval'
2527 updates of `erc-lurker-state'."
2528 (when (and (boundp 'parsed) (erc-response-p parsed))
2529 (let* ((command (erc-response.command parsed))
2530 (sender
2531 (erc-lurker-maybe-trim
2532 (car (erc-parse-user (erc-response.sender parsed)))))
2533 (server
2534 (erc-canonicalize-server-name erc-server-announced-name)))
2535 (when (equal command "PRIVMSG")
2536 (when (>= (cl-incf erc-lurker-cleanup-count)
2537 erc-lurker-cleanup-interval)
2538 (setq erc-lurker-cleanup-count 0)
2539 (erc-lurker-cleanup))
2540 (unless (gethash server erc-lurker-state)
2541 (puthash server (make-hash-table :test 'equal) erc-lurker-state))
2542 (puthash sender (current-time)
2543 (gethash server erc-lurker-state))))))
2545 (defun erc-lurker-p (nick)
2546 "Predicate indicating NICK's lurking status on the current server.
2548 Lurking is the condition where NICK has issued no PRIVMSG on this
2549 server within `erc-lurker-threshold-time'. See also
2550 `erc-lurker-trim-nicks' and `erc-lurker-ignore-chars'."
2551 (unless erc-lurker-state (erc-lurker-initialize))
2552 (let* ((server
2553 (erc-canonicalize-server-name erc-server-announced-name))
2554 (last-PRIVMSG-time
2555 (gethash (erc-lurker-maybe-trim nick)
2556 (gethash server erc-lurker-state (make-hash-table)))))
2557 (or (null last-PRIVMSG-time)
2558 (> (float-time
2559 (time-subtract (current-time) last-PRIVMSG-time))
2560 erc-lurker-threshold-time))))
2562 (defcustom erc-common-server-suffixes
2563 '(("openprojects.net$" . "OPN")
2564 ("freenode.net$" . "freenode")
2565 ("oftc.net$" . "OFTC"))
2566 "Alist of common server name suffixes.
2567 This variable is used in mode-line display to save screen
2568 real estate. Set it to nil if you want to avoid changing
2569 displayed hostnames."
2570 :group 'erc-mode-line-and-header
2571 :type 'alist)
2573 (defun erc-canonicalize-server-name (server)
2574 "Return the canonical network name for SERVER if any,
2575 otherwise `erc-server-announced-name'. SERVER is matched against
2576 `erc-common-server-suffixes'."
2577 (when server
2578 (or (cdar (erc-remove-if-not
2579 (lambda (net) (string-match (car net) server))
2580 erc-common-server-suffixes))
2581 erc-server-announced-name)))
2583 (defun erc-hide-current-message-p (parsed)
2584 "Predicate indicating whether the parsed ERC response PARSED should be hidden.
2586 Messages are always hidden if the message type of PARSED appears in
2587 `erc-hide-list'. In addition, messages whose type is a member of
2588 `erc-lurker-hide-list' are hidden if `erc-lurker-p' returns true."
2589 (let* ((command (erc-response.command parsed))
2590 (sender (car (erc-parse-user (erc-response.sender parsed)))))
2591 (or (member command erc-hide-list)
2592 (and (member command erc-lurker-hide-list) (erc-lurker-p sender)))))
2594 (defun erc-display-message (parsed type buffer msg &rest args)
2595 "Display MSG in BUFFER.
2597 ARGS, PARSED, and TYPE are used to format MSG sensibly.
2599 See also `erc-format-message' and `erc-display-line'."
2600 (let ((string (if (symbolp msg)
2601 (apply 'erc-format-message msg args)
2602 msg)))
2603 (setq string
2604 (cond
2605 ((null type)
2606 string)
2607 ((listp type)
2608 (mapc (lambda (type)
2609 (setq string
2610 (erc-display-message-highlight type string)))
2611 type)
2612 string)
2613 ((symbolp type)
2614 (erc-display-message-highlight type string))))
2616 (if (not (erc-response-p parsed))
2617 (erc-display-line string buffer)
2618 (unless (erc-hide-current-message-p parsed)
2619 (erc-put-text-property 0 (length string) 'erc-parsed parsed string)
2620 (erc-put-text-property 0 (length string) 'rear-sticky t string)
2621 (erc-display-line string buffer)))))
2623 (defun erc-message-type-member (position list)
2624 "Return non-nil if the erc-parsed text-property at POSITION is in LIST.
2626 This function relies on the erc-parsed text-property being
2627 present."
2628 (let ((prop-val (erc-get-parsed-vector position)))
2629 (and prop-val (member (erc-response.command prop-val) list))))
2631 (defvar erc-send-input-line-function 'erc-send-input-line)
2632 (make-variable-buffer-local 'erc-send-input-line-function)
2634 (defun erc-send-input-line (target line &optional force)
2635 "Send LINE to TARGET.
2637 See also `erc-server-send'."
2638 (setq line (format "PRIVMSG %s :%s"
2639 target
2640 ;; If the line is empty, we still want to
2641 ;; send it - i.e. an empty pasted line.
2644 line)))
2645 (erc-server-send line force target))
2647 (defun erc-get-arglist (fun)
2648 "Return the argument list of a function without the parens."
2649 (let ((arglist (format "%S" (erc-function-arglist fun))))
2651 (match-string 1 arglist)
2652 arglist)))
2654 (defun erc-command-no-process-p (str)
2655 "Return non-nil if STR is an ERC command that can be run when the process
2656 is not alive, nil otherwise."
2657 (let ((fun (erc-extract-command-from-line str)))
2658 (and fun
2659 (symbolp (car fun))
2660 (get (car fun) 'process-not-needed))))
2662 (defun erc-command-name (cmd)
2663 "For CMD being the function name of a ERC command, something like
2664 erc-cmd-FOO, this returns a string /FOO."
2665 (let ((command-name (symbol-name cmd)))
2667 (concat "/" (match-string 1 command-name))
2668 command-name)))
2670 (defun erc-process-input-line (line &optional force no-command)
2671 "Translate LINE to an RFC1459 command and send it based.
2672 Returns non-nil if the command is actually sent to the server, and nil
2673 otherwise.
2675 If the command in the LINE is not bound as a function `erc-cmd-<COMMAND>',
2676 it is passed to `erc-cmd-default'. If LINE is not a command (i.e. doesn't
2677 start with /<COMMAND>) then it is sent as a message.
2679 An optional FORCE argument forces sending the line when flood
2680 protection is in effect. The optional NO-COMMAND argument prohibits
2681 this function from interpreting the line as a command."
2682 (let ((command-list (erc-extract-command-from-line line)))
2683 (if (and command-list
2684 (not no-command))
2685 (let* ((cmd (nth 0 command-list))
2686 (args (nth 1 command-list)))
2687 (condition-case nil
2688 (if (listp args)
2689 (apply cmd args)
2690 (funcall cmd args))
2691 (wrong-number-of-arguments
2692 (erc-display-message nil 'error (current-buffer) 'incorrect-args
2693 ?c (erc-command-name cmd)
2694 ?u (or (erc-get-arglist cmd)
2695 "")
2697 (or (documentation cmd) "")))
2698 nil)))
2699 (let ((r (erc-default-target)))
2700 (if r
2701 (funcall erc-send-input-line-function r line force)
2702 (erc-display-message nil 'error (current-buffer) 'no-target)
2703 nil)))))
2705 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2706 ;; Input commands handlers
2707 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
2709 (defun erc-cmd-AMSG (line)
2710 "Send LINE to all channels of the current server that you are on."
2711 (interactive "sSend to all channels you're on: ")
2712 (setq line (erc-trim-string line))
2713 (erc-with-all-buffers-of-server nil
2714 (lambda ()
2715 (erc-channel-p (erc-default-target)))
2716 (erc-send-message line)))
2717 (put 'erc-cmd-AMSG 'do-not-parse-args t)
2719 (defun erc-cmd-SAY (line)
2720 "Send LINE to the current query or channel as a message, not a command.
2722 Use this when you want to send a message with a leading '/'. Note
2723 that since multi-line messages are never a command, you don't
2724 need this when pasting multiple lines of text."
2726 nil
2728 (erc-process-input-line (match-string 1 line) nil t)))
2729 (put 'erc-cmd-SAY 'do-not-parse-args t)
2731 (defun erc-cmd-SET (line)
2732 "Set the variable named by the first word in LINE to some VALUE.
2733 VALUE is computed by evaluating the rest of LINE in Lisp."
2734 (cond
2736 (let ((var (read (concat "erc-" (match-string 1 line))))
2737 (val (read (match-string 2 line))))
2738 (if (boundp var)
2739 (progn
2740 (set var (eval val))
2741 (erc-display-message
2742 nil nil 'active (format "Set %S to %S" var val))
2743 t)
2744 (setq var (read (match-string 1 line)))
2745 (if (boundp var)
2746 (progn
2747 (set var (eval val))
2748 (erc-display-message
2749 nil nil 'active (format "Set %S to %S" var val))
2750 t)
2751 (erc-display-message nil 'error 'active 'variable-not-bound)
2752 nil))))
2754 (erc-display-line
2756 (apply
2757 'concat
2758 (mapcar
2759 (lambda (var)
2760 (let ((val (symbol-value var)))
2761 (concat (format "%S:" var)
2762 (if (consp val)
2765 (apropos-internal "^erc-" 'custom-variable-p))))
2766 (current-buffer)) t)
2767 (t nil)))
2768 (defalias 'erc-cmd-VAR 'erc-cmd-SET)
2769 (defalias 'erc-cmd-VARIABLE 'erc-cmd-SET)
2770 (put 'erc-cmd-SET 'do-not-parse-args t)
2771 (put 'erc-cmd-SET 'process-not-needed t)
2773 (defun erc-cmd-default (line)
2774 "Fallback command.
2776 Commands for which no erc-cmd-xxx exists, are tunneled through
2777 this function. LINE is sent to the server verbatim, and
2778 therefore has to contain the command itself as well."
2779 (erc-log (format "cmd: DEFAULT: %s" line))
2780 (erc-server-send (substring line 1))
2781 t)
2783 (defun erc-cmd-IGNORE (&optional user)
2784 "Ignore USER. This should be a regexp matching nick!user@host.
2785 If no USER argument is specified, list the contents of `erc-ignore-list'."
2786 (if user
2787 (let ((quoted (regexp-quote user)))
2788 (when (and (not (string= user quoted))
2789 (y-or-n-p (format "Use regexp-quoted form (%s) instead? "
2790 quoted)))
2791 (setq user quoted))
2792 (erc-display-line
2793 (erc-make-notice (format "Now ignoring %s" user))
2794 'active)
2795 (erc-with-server-buffer (add-to-list 'erc-ignore-list user)))
2796 (if (null (erc-with-server-buffer erc-ignore-list))
2797 (erc-display-line (erc-make-notice "Ignore list is empty") 'active)
2798 (erc-display-line (erc-make-notice "Ignore list:") 'active)
2799 (mapc #'(lambda (item)
2800 (erc-display-line (erc-make-notice item)
2801 'active))
2802 (erc-with-server-buffer erc-ignore-list))))
2803 t)
2805 (defun erc-cmd-UNIGNORE (user)
2806 "Remove the user specified in USER from the ignore list."
2807 (let ((ignored-nick (car (erc-with-server-buffer
2808 (erc-member-ignore-case (regexp-quote user)
2809 erc-ignore-list)))))
2810 (unless ignored-nick
2811 (if (setq ignored-nick (erc-ignored-user-p user))
2812 (unless (y-or-n-p (format "Remove this regexp (%s)? "
2813 ignored-nick))
2814 (setq ignored-nick nil))
2815 (erc-display-line
2816 (erc-make-notice (format "%s is not currently ignored!" user))
2817 'active)))
2818 (when ignored-nick
2819 (erc-display-line
2820 (erc-make-notice (format "No longer ignoring %s" user))
2821 'active)
2822 (erc-with-server-buffer
2823 (setq erc-ignore-list (delete ignored-nick erc-ignore-list)))))
2824 t)
2826 (defun erc-cmd-CLEAR ()
2827 "Clear the window content."
2828 (recenter 0)
2829 t)
2830 (put 'erc-cmd-CLEAR 'process-not-needed t)
2832 (defun erc-cmd-OPS ()
2833 "Show the ops in the current channel."
2834 (interactive)
2835 (let ((ops nil))
2836 (if erc-channel-users
2837 (maphash (lambda (_nick user-data)
2838 (let ((cuser (cdr user-data)))
2839 (if (and cuser
2840 (erc-channel-user-op cuser))
2841 (setq ops (cons (erc-server-user-nickname
2842 (car user-data))
2843 ops)))))
2844 erc-channel-users))
2845 (setq ops (sort ops 'string-lessp))
2846 (if ops
2847 (erc-display-message
2848 nil 'notice (current-buffer) 'ops
2849 ?i (length ops) ?s (if (> (length ops) 1) "s" "")
2850 ?o (mapconcat 'identity ops " "))
2851 (erc-display-message nil 'notice (current-buffer) 'ops-none)))
2852 t)
2854 (defun erc-cmd-COUNTRY (tld)
2855 "Display the country associated with the top level domain TLD."
2856 (require 'mail-extr)
2857 (let ((co (ignore-errors (what-domain tld))))
2858 (if co
2859 (erc-display-message
2860 nil 'notice 'active 'country ?c co ?d tld)
2861 (erc-display-message
2862 nil 'notice 'active 'country-unknown ?d tld))
2863 t))
2864 (put 'erc-cmd-COUNTRY 'process-not-needed t)
2866 (defun erc-cmd-AWAY (line)
2867 "Mark the user as being away, the reason being indicated by LINE.
2868 If no reason is given, unset away status."
2870 (let ((reason (match-string 1 line)))
2871 (erc-log (format "cmd: AWAY: %s" reason))
2872 (erc-server-send
2873 (if (string= reason "")
2874 "AWAY"
2875 (concat "AWAY :" reason))))
2876 t))
2877 (put 'erc-cmd-AWAY 'do-not-parse-args t)
2879 (defun erc-cmd-GAWAY (line)
2880 "Mark the user as being away everywhere, the reason being indicated by LINE."
2881 ;; on all server buffers.
2882 (erc-with-all-buffers-of-server nil
2883 #'erc-open-server-buffer-p
2884 (erc-cmd-AWAY line)))
2885 (put 'erc-cmd-GAWAY 'do-not-parse-args t)
2887 (defun erc-cmd-CTCP (nick cmd &rest args)
2888 "Send a Client To Client Protocol message to NICK.
2890 CMD is the CTCP command, possible values being ECHO, FINGER, CLIENTINFO, TIME,
2891 VERSION and so on. It is called with ARGS."
2892 (let ((str (concat cmd
2893 (when args
2894 (concat " " (mapconcat #'identity args " "))))))
2895 (erc-log (format "cmd: CTCP [%s]: [%s]" nick str))
2896 (erc-send-ctcp-message nick str)
2897 t))
2899 (defun erc-cmd-HELP (&optional func)
2900 "Popup help information.
2902 If FUNC contains a valid function or variable, help about that
2903 will be displayed. If FUNC is empty, display an apropos about
2904 ERC commands. Otherwise, do `apropos' in the ERC namespace
2907 Examples:
2908 To find out about erc and bbdb, do
2909 /help bbdb.*
2911 For help about the WHOIS command, do:
2912 /help whois
2914 For a list of user commands (/join /part, ...):
2915 /help."
2916 (if func
2917 (let* ((sym (or (let ((sym (intern-soft
2918 (concat "erc-cmd-" (upcase func)))))
2919 (if (and sym (or (boundp sym) (fboundp sym)))
2920 sym
2921 nil))
2922 (let ((sym (intern-soft func)))
2923 (if (and sym (or (boundp sym) (fboundp sym)))
2924 sym
2925 nil))
2926 (let ((sym (intern-soft (concat "erc-" func))))
2927 (if (and sym (or (boundp sym) (fboundp sym)))
2928 sym
2929 nil)))))
2930 (if sym
2931 (cond
2932 ((boundp sym) (describe-variable sym))
2933 ((fboundp sym) (describe-function sym))
2934 (t nil))
2935 (apropos-command (concat "erc-.*" func) nil
2936 (lambda (x)
2937 (or (commandp x)
2938 (get x 'custom-type))))
2939 t))
2940 (apropos "erc-cmd-")
2941 (message "Type C-h m to get additional information about keybindings.")
2942 t))
2944 (defalias 'erc-cmd-H 'erc-cmd-HELP)
2945 (put 'erc-cmd-HELP 'process-not-needed t)
2947 (defun erc-cmd-JOIN (channel &optional key)
2948 "Join the channel given in CHANNEL, optionally with KEY.
2950 were most recently invited. See also `invitation'."
2951 (let (chnl)
2952 (if (string= (upcase channel) "-INVITE")
2953 (if erc-invitation
2954 (setq chnl erc-invitation)
2955 (erc-display-message nil 'error (current-buffer) 'no-invitation))
2956 (setq chnl (erc-ensure-channel-name channel)))
2957 (when chnl
2958 ;; Prevent double joining of same channel on same server.
2959 (let ((joined-channels
2960 (mapcar #'(lambda (chanbuf)
2961 (with-current-buffer chanbuf (erc-default-target)))
2962 (erc-channel-list erc-server-process))))
2963 (if (erc-member-ignore-case chnl joined-channels)
2964 (switch-to-buffer (car (erc-member-ignore-case chnl
2965 joined-channels)))
2966 (erc-log (format "cmd: JOIN: %s" chnl))
2967 (erc-server-send (if (and chnl key)
2968 (format "JOIN %s %s" chnl key)
2969 (format "JOIN %s" chnl)))))))
2970 t)
2972 (defalias 'erc-cmd-CHANNEL 'erc-cmd-JOIN)
2973 (defalias 'erc-cmd-J 'erc-cmd-JOIN)
2975 (defvar erc-channel-new-member-names nil
2976 "If non-nil, a names list is currently being received.
2978 If non-nil, this variable is a hash-table that associates
2979 received nicks with t.")
2980 (make-variable-buffer-local 'erc-channel-new-member-names)
2982 (defun erc-cmd-NAMES (&optional channel)
2983 "Display the users in CHANNEL.
2984 If CHANNEL is not specified, display the users in the current channel.
2985 This function clears the channel name list first, then sends the
2986 command."
2987 (let ((tgt (or (and (erc-channel-p channel) channel)
2988 (erc-default-target))))
2989 (if (and tgt (erc-channel-p tgt))
2990 (progn
2991 (erc-log (format "cmd: DEFAULT: NAMES %s" tgt))
2992 (erc-with-buffer
2993 (tgt)
2994 (erc-channel-begin-receiving-names))
2995 (erc-server-send (concat "NAMES " tgt)))
2996 (erc-display-message nil 'error (current-buffer) 'no-default-channel)))
2997 t)
2998 (defalias 'erc-cmd-N 'erc-cmd-NAMES)
3000 (defun erc-cmd-KICK (target &optional reason-or-nick &rest reasonwords)
3001 "Kick the user indicated in LINE from the current channel.
3003 (let ((reasonstring (mapconcat 'identity reasonwords " ")))
3004 (if (string= "" reasonstring)
3005 (setq reasonstring (format "Kicked by %s" (erc-current-nick))))
3006 (if (erc-channel-p target)
3007 (let ((nick reason-or-nick))
3008 (erc-log (format "cmd: KICK: %s/%s: %s" nick target reasonstring))
3009 (erc-server-send (format "KICK %s %s :%s" target nick reasonstring)
3010 nil target)
3011 t)
3012 (when target
3013 (let ((ch (erc-default-target)))
3014 (setq reasonstring (concat
3015 (if reason-or-nick (concat reason-or-nick " "))
3016 reasonstring))
3017 (if ch
3018 (progn
3019 (erc-log
3020 (format "cmd: KICK: %s/%s: %s" target ch reasonstring))
3021 (erc-server-send
3022 (format "KICK %s %s :%s" ch target reasonstring) nil ch))
3023 (erc-display-message nil 'error (current-buffer)
3024 'no-default-channel))
3025 t)))))
3027 (defvar erc-script-args nil)
3029 (defun erc-cmd-LOAD (line)
3030 "Load the script provided in the LINE.
3031 If LINE continues beyond the file name, the rest of
3032 it is put in a (local) variable `erc-script-args',
3033 which can be used in Emacs Lisp scripts.
3035 The optional FORCE argument is ignored here - you can't force loading
3036 a script after exceeding the flood threshold."
3037 (cond
3039 (let* ((file-to-find (match-string 1 line))
3040 (erc-script-args (match-string 2 line))
3041 (file (erc-find-file file-to-find erc-script-path)))
3042 (erc-log (format "cmd: LOAD: %s" file-to-find))
3043 (cond
3044 ((not file)
3045 (erc-display-message nil 'error (current-buffer)
3046 'cannot-find-file ?f file-to-find))
3047 ((not (file-readable-p file))
3048 (erc-display-message nil 'error (current-buffer)
3049 'cannot-read-file ?f file))
3050 (t
3052 (erc-load-script file)
3054 t)
3055 (t nil)))
3057 (defun erc-cmd-WHOIS (user &optional server)
3058 "Display whois information for USER.
3060 If SERVER is non-nil, use that, rather than the current server."
3061 ;; FIXME: is the above docstring correct? -- Lawrence 2004-01-08
3062 (let ((send (if server
3063 (format "WHOIS %s %s" user server)
3064 (format "WHOIS %s" user))))
3065 (erc-log (format "cmd: %s" send))
3066 (erc-server-send send)
3067 t))
3068 (defalias 'erc-cmd-WI 'erc-cmd-WHOIS)
3070 (defun erc-cmd-WHOAMI ()
3071 "Display whois information about yourself."
3072 (erc-cmd-WHOIS (erc-current-nick))
3073 t)
3075 (defun erc-cmd-IDLE (nick)
3076 "Show the length of time NICK has been idle."
3077 (let ((origbuf (current-buffer))
3078 symlist)
3079 (erc-with-server-buffer
3080 (push (cons (erc-once-with-server-event
3081 311 (lambda (_proc parsed)
3082 (string= nick
3083 (nth 1 (erc-response.command-args
3084 parsed)))))
3085 'erc-server-311-functions)
3086 symlist)
3087 (push (cons (erc-once-with-server-event
3088 312 (lambda (_proc parsed)
3089 (string= nick
3090 (nth 1 (erc-response.command-args
3091 parsed)))))
3092 'erc-server-312-functions)
3093 symlist)
3094 (push (cons (erc-once-with-server-event
3095 318 (lambda (_proc parsed)
3096 (string= nick
3097 (nth 1 (erc-response.command-args
3098 parsed)))))
3099 'erc-server-318-functions)
3100 symlist)
3101 (push (cons (erc-once-with-server-event
3102 319 (lambda (_proc parsed)
3103 (string= nick
3104 (nth 1 (erc-response.command-args
3105 parsed)))))
3106 'erc-server-319-functions)
3107 symlist)
3108 (push (cons (erc-once-with-server-event
3109 320 (lambda (_proc parsed)
3110 (string= nick
3111 (nth 1 (erc-response.command-args
3112 parsed)))))
3113 'erc-server-320-functions)
3114 symlist)
3115 (push (cons (erc-once-with-server-event
3116 330 (lambda (_proc parsed)
3117 (string= nick
3118 (nth 1 (erc-response.command-args
3119 parsed)))))
3120 'erc-server-330-functions)
3121 symlist)
3122 (push (cons (erc-once-with-server-event
3123 317
3124 (lambda (_proc parsed)
3125 (let ((idleseconds
3126 (string-to-number
3127 (cl-third
3128 (erc-response.command-args parsed)))))
3129 (erc-display-line
3130 (erc-make-notice
3131 (format "%s has been idle for %s."
3132 (erc-string-no-properties nick)
3133 (erc-seconds-to-string idleseconds)))
3134 origbuf)
3135 t)))
3136 'erc-server-317-functions)
3137 symlist)
3139 ;; Send the WHOIS command.
3140 (erc-cmd-WHOIS nick)
3142 ;; Remove the uninterned symbols from the server hooks that did not run.
3143 (run-at-time 20 nil (lambda (buf symlist)
3144 (with-current-buffer buf
3145 (dolist (sym symlist)
3146 (let ((hooksym (cdr sym))
3147 (funcsym (car sym)))
3148 (remove-hook hooksym funcsym t)))))
3149 (current-buffer) symlist)))
3150 t)
3152 (defun erc-cmd-DESCRIBE (line)
3153 "Pose some action to a certain user.
3155 (cond
3156 ((string-match
3158 (let ((dst (match-string 1 line))
3159 (s (match-string 2 line)))
3160 (erc-log (format "cmd: DESCRIBE: [%s] %s" dst s))
3161 (erc-send-action dst s))
3162 t)
3163 (t nil)))
3164 (put 'erc-cmd-DESCRIBE 'do-not-parse-args t)
3166 (defun erc-cmd-ME (line)
3167 "Send LINE as an action."
3168 (cond
3170 (let ((s (match-string 1 line)))
3171 (erc-log (format "cmd: ME: %s" s))
3172 (erc-send-action (erc-default-target) s))
3173 t)
3174 (t nil)))
3175 (put 'erc-cmd-ME 'do-not-parse-args t)
3179 (erc-cmd-ME (concat " 's" line)))
3182 (defun erc-cmd-LASTLOG (line)
3183 "Show all lines in the current buffer matching the regexp LINE.
3185 If a match spreads across multiple lines, all those lines are shown.
3187 The lines are shown in a buffer named `*Occur*'.
3188 It serves as a menu to find any of the occurrences in this buffer.
3192 the matching is case-sensitive."
3193 (occur line)
3194 t)
3195 (put 'erc-cmd-LASTLOG 'do-not-parse-args t)
3196 (put 'erc-cmd-LASTLOG 'process-not-needed t)
3198 (defun erc-send-message (line &optional force)
3199 "Send LINE to the current channel or user and display it.
3201 See also `erc-message' and `erc-display-line'."
3202 (erc-message "PRIVMSG" (concat (erc-default-target) " " line) force)
3203 (erc-display-line
3204 (concat (erc-format-my-nick) line)
3205 (current-buffer))
3206 ;; FIXME - treat multiline, run hooks, or remove me?
3207 t)
3209 (defun erc-cmd-MODE (line)
3210 "Change or display the mode value of a channel or user.
3211 The first word specifies the target. The rest is the mode string
3212 to send.
3214 If only one word is given, display the mode of that target.
3216 A list of valid mode strings for Freenode may be found at
3217 URL `http://freenode.net/using_the_network.shtml'."
3218 (cond
3220 (let ((s (match-string 1 line)))
3221 (erc-log (format "cmd: MODE: %s" s))
3222 (erc-server-send (concat "MODE " line)))
3223 t)
3224 (t nil)))
3225 (put 'erc-cmd-MODE 'do-not-parse-args t)
3227 (defun erc-cmd-NOTICE (channel-or-user &rest message)
3228 "Send a notice to the channel or user given as the first word.
3229 The rest is the message to send."
3230 (erc-message "NOTICE" (concat channel-or-user " "
3231 (mapconcat #'identity message " "))))
3233 (defun erc-cmd-MSG (line)
3234 "Send a message to the channel or user given as the first word in LINE.
3236 The rest of LINE is the message to send."
3237 (erc-message "PRIVMSG" line))
3239 (defalias 'erc-cmd-M 'erc-cmd-MSG)
3240 (put 'erc-cmd-MSG 'do-not-parse-args t)
3242 (defun erc-cmd-SQUERY (line)
3243 "Send a Service Query to the service given as the first word in LINE.
3245 The rest of LINE is the message to send."
3246 (erc-message "SQUERY" line))
3248 (defun erc-cmd-NICK (nick)
3249 "Change current nickname to NICK."
3250 (erc-log (format "cmd: NICK: %s (erc-bad-nick: %S)" nick erc-bad-nick))
3251 (let ((nicklen (cdr (assoc "NICKLEN" (erc-with-server-buffer
3252 erc-server-parameters)))))
3253 (and nicklen (> (length nick) (string-to-number nicklen))
3254 (erc-display-message
3255 nil 'notice 'active 'nick-too-long
3256 ?i (length nick) ?l nicklen)))
3257 (erc-server-send (format "NICK %s" nick))
3258 (cond (erc-bad-nick
3259 (erc-set-current-nick nick)
3260 (erc-update-mode-line)
3261 (setq erc-bad-nick nil)))
3262 t)
3264 (defun erc-cmd-PART (line)
3265 "When LINE is an empty string, leave the current channel.
3266 Otherwise leave the channel indicated by LINE."
3267 (cond
3269 (let* ((ch (match-string 1 line))
3270 (msg (match-string 2 line))
3271 (reason (funcall erc-part-reason (if (equal msg "") nil msg))))
3272 (erc-log (format "cmd: PART: %s: %s" ch reason))
3273 (erc-server-send (if (string= reason "")
3274 (format "PART %s" ch)
3275 (format "PART %s :%s" ch reason))
3276 nil ch))
3277 t)
3279 (let* ((ch (erc-default-target))
3280 (msg (match-string 1 line))
3281 (reason (funcall erc-part-reason (if (equal msg "") nil msg))))
3282 (if (and ch (erc-channel-p ch))
3283 (progn
3284 (erc-log (format "cmd: PART: %s: %s" ch reason))
3285 (erc-server-send (if (string= reason "")
3286 (format "PART %s" ch)
3287 (format "PART %s :%s" ch reason))
3288 nil ch))
3289 (erc-display-message nil 'error (current-buffer) 'no-target)))
3290 t)
3291 (t nil)))
3292 (put 'erc-cmd-PART 'do-not-parse-args t)
3294 (defalias 'erc-cmd-LEAVE 'erc-cmd-PART)
3296 (defun erc-cmd-PING (recipient)
3297 "Ping RECIPIENT."
3298 (let ((time (format "%f" (erc-current-time))))
3299 (erc-log (format "cmd: PING: %s" time))
3300 (erc-cmd-CTCP recipient "PING" time)))
3302 (defun erc-cmd-QUOTE (line)
3303 "Send LINE directly to the server.
3304 All the text given as argument is sent to the sever as unmodified,
3305 just as you provided it. Use this command with care!"
3306 (cond
3308 (erc-server-send (match-string 1 line)))
3309 (t nil)))
3310 (put 'erc-cmd-QUOTE 'do-not-parse-args t)
3312 (defcustom erc-query-display 'window
3313 "Indicates how to display query buffers when using the /QUERY
3314 command to talk to someone.
3316 The default behavior is to display the message in a new window
3317 and bring it to the front. See the documentation for
3318 `erc-join-buffer' for a description of the available choices.
3320 See also `erc-auto-query' to decide how private messages from
3321 other people should be displayed."
3322 :group 'erc-query
3323 :type '(choice (const :tag "Split window and select" window)
3324 (const :tag "Split window, don't select" window-noselect)
3325 (const :tag "New frame" frame)
3326 (const :tag "Bury in new buffer" bury)
3327 (const :tag "Use current buffer" buffer)
3328 (const :tag "Use current buffer" t)))
3330 (defun erc-cmd-QUERY (&optional user)
3331 "Open a query with USER.
3332 The type of query window/frame/etc will depend on the value of
3333 `erc-query-display'.
3335 If USER is omitted, close the current query buffer if one exists
3336 - except this is broken now ;-)"
3337 (interactive
3338 (list (read-from-minibuffer "Start a query with: " nil)))
3339 (let ((session-buffer (erc-server-buffer))
3340 (erc-join-buffer erc-query-display))
3341 (if user
3342 (erc-query user session-buffer)
3343 ;; currently broken, evil hack to display help anyway
3344 ;(erc-delete-query))))
3345 (signal 'wrong-number-of-arguments ""))))
3346 (defalias 'erc-cmd-Q 'erc-cmd-QUERY)
3348 (defun erc-quit-reason-normal (&optional s)
3349 "Normal quit message.
3351 If S is non-nil, it will be used as the quit reason."
3352 (or s
3353 (format "\C-bERC\C-b %s (IRC client for Emacs)"; - \C-b%s\C-b"
3354 erc-version-string) ; erc-official-location)
3355 ))
3357 (defun erc-quit-reason-zippy (&optional s)
3358 "Zippy quit message.
3360 If S is non-nil, it will be used as the quit reason."
3361 (or s
3362 (if (fboundp 'yow)
3364 (erc-quit-reason-normal))))
3366 (make-obsolete 'erc-quit-reason-zippy "it will be removed." "24.4")
3368 (defun erc-quit-reason-various (s)
3369 "Choose a quit reason based on S (a string)."
3370 (when (featurep 'xemacs) (require 'poe))
3371 (let ((res (car (assoc-default (or s "")
3372 erc-quit-reason-various-alist 'string-match))))
3373 (cond
3374 ((functionp res) (funcall res))
3375 ((stringp res) res)
3376 (s s)
3377 (t (erc-quit-reason-normal)))))
3379 (defun erc-part-reason-normal (&optional s)
3380 "Normal part message.
3382 If S is non-nil, it will be used as the quit reason."
3383 (or s
3384 (format "\C-bERC\C-b %s (IRC client for Emacs)"; - \C-b%s\C-b"
3385 erc-version-string) ; erc-official-location)
3386 ))
3388 (defun erc-part-reason-zippy (&optional s)
3389 "Zippy part message.
3391 If S is non-nil, it will be used as the quit reason."
3392 (or s
3393 (if (fboundp 'yow)
3395 (erc-part-reason-normal))))
3397 (make-obsolete 'erc-part-reason-zippy "it will be removed." "24.4")
3399 (defun erc-part-reason-various (s)
3400 "Choose a part reason based on S (a string)."
3401 (when (featurep 'xemacs) (require 'poe))
3402 (let ((res (car (assoc-default (or s "")
3403 erc-part-reason-various-alist 'string-match))))
3404 (cond
3405 ((functionp res) (funcall res))
3406 ((stringp res) res)
3407 (s s)
3408 (t (erc-part-reason-normal)))))
3410 (defun erc-cmd-QUIT (reason)
3411 "Disconnect from the current server.
3412 If REASON is omitted, display a default quit message, otherwise display
3413 the message given by REASON."
3414 (unless reason
3415 (setq reason ""))
3416 (cond
3418 (let* ((s (match-string 1 reason))
3419 (buffer (erc-server-buffer))
3420 (reason (funcall erc-quit-reason (if (equal s "") nil s)))
3421 server-proc)
3422 (with-current-buffer (if (and buffer
3423 (bufferp buffer))
3424 buffer
3425 (current-buffer))
3426 (erc-log (format "cmd: QUIT: %s" reason))
3427 (setq erc-server-quitting t)
3428 (erc-set-active-buffer (erc-server-buffer))
3429 (setq server-proc erc-server-process)
3430 (erc-server-send (format "QUIT :%s" reason)))
3431 (run-hook-with-args 'erc-quit-hook server-proc)
3432 (when erc-kill-queries-on-quit
3433 (erc-kill-query-buffers server-proc))
3434 ;; if the process has not been killed within 4 seconds, kill it
3435 (run-at-time 4 nil
3436 (lambda (proc)
3437 (when (and (processp proc)
3438 (memq (process-status proc) '(run open)))
3439 (delete-process proc)))
3440 server-proc))
3441 t)
3442 (t nil)))
3444 (defalias 'erc-cmd-BYE 'erc-cmd-QUIT)
3445 (defalias 'erc-cmd-EXIT 'erc-cmd-QUIT)
3446 (defalias 'erc-cmd-SIGNOFF 'erc-cmd-QUIT)
3447 (put 'erc-cmd-QUIT 'do-not-parse-args t)
3448 (put 'erc-cmd-QUIT 'process-not-needed t)
3450 (defun erc-cmd-GQUIT (reason)
3451 "Disconnect from all servers at once with the same quit REASON."
3452 (erc-with-all-buffers-of-server nil #'erc-open-server-buffer-p
3453 (erc-cmd-QUIT reason))
3454 (when erc-kill-queries-on-quit
3455 ;; if the query buffers have not been killed within 4 seconds,
3456 ;; kill them
3457 (run-at-time
3458 4 nil
3459 (lambda ()
3460 (dolist (buffer (erc-buffer-list (lambda (buf)
3461 (not (erc-server-buffer-p buf)))))
3462 (kill-buffer buffer)))))
3463 t)
3465 (defalias 'erc-cmd-GQ 'erc-cmd-GQUIT)
3466 (put 'erc-cmd-GQUIT 'do-not-parse-args t)
3467 (put 'erc-cmd-GQUIT 'process-not-needed t)
3469 (defun erc-cmd-RECONNECT ()
3470 "Try to reconnect to the current IRC server."
3471 (let ((buffer (erc-server-buffer))
3472 (process nil))
3473 (unless (buffer-live-p buffer)
3474 (setq buffer (current-buffer)))
3475 (with-current-buffer buffer
3476 (setq erc-server-quitting nil)
3477 (setq erc-server-reconnecting t)
3478 (setq erc-server-reconnect-count 0)
3479 (setq process (get-buffer-process (erc-server-buffer)))
3480 (if process
3481 (delete-process process)
3482 (erc-server-reconnect))
3483 (setq erc-server-reconnecting nil)))
3484 t)
3485 (put 'erc-cmd-RECONNECT 'process-not-needed t)
3487 (defun erc-cmd-SERVER (server)
3488 "Connect to SERVER, leaving existing connection intact."
3489 (erc-log (format "cmd: SERVER: %s" server))
3490 (condition-case nil
3491 (erc :server server :nick (erc-current-nick))
3492 (error
3493 (erc-error "Cannot find host %s." server)))
3494 t)
3495 (put 'erc-cmd-SERVER 'process-not-needed t)
3497 (defvar motif-version-string)
3498 (defvar gtk-version-string)
3500 (defun erc-cmd-SV ()
3501 "Say the current ERC and Emacs version into channel."
3502 (erc-send-message (format "I'm using ERC %s with %s %s (%s%s) of %s."
3503 erc-version-string
3504 (if (featurep 'xemacs) "XEmacs" "GNU Emacs")
3505 emacs-version
3506 system-configuration
3507 (concat
3508 (cond ((featurep 'motif)
3509 (concat ", " (substring
3510 motif-version-string 4)))
3511 ((featurep 'gtk)
3512 (concat ", GTK+ Version "
3513 gtk-version-string))
3514 ((featurep 'x-toolkit) ", X toolkit")
3515 (t ""))
3516 (if (and (boundp 'x-toolkit-scroll-bars)
3517 (memq x-toolkit-scroll-bars
3518 '(xaw xaw3d)))
3519 (format ", %s scroll bars"
3520 (capitalize (symbol-name
3521 x-toolkit-scroll-bars)))
3522 "")
3523 (if (featurep 'multi-tty) ", multi-tty" ""))
3524 erc-emacs-build-time))
3525 t)
3527 (defun erc-cmd-SM ()
3528 "Say the current ERC modes into channel."
3529 (erc-send-message (format "I'm using the following modules: %s!"
3530 (erc-modes)))
3531 t)
3533 (defun erc-cmd-DEOP (&rest people)
3534 "Remove the operator setting from user(s) given in PEOPLE."
3535 (when (> (length people) 0)
3536 (erc-server-send (concat "MODE " (erc-default-target)
3537 " -"
3538 (make-string (length people) ?o)
3539 " "
3540 (mapconcat 'identity people " ")))
3541 t))
3543 (defun erc-cmd-OP (&rest people)
3544 "Add the operator setting to users(s) given in PEOPLE."
3545 (when (> (length people) 0)
3546 (erc-server-send (concat "MODE " (erc-default-target)
3547 " +"
3548 (make-string (length people) ?o)
3549 " "
3550 (mapconcat 'identity people " ")))
3551 t))
3553 (defun erc-cmd-TIME (&optional line)
3554 "Request the current time and date from the current server."
3555 (cond
3557 (let ((args (match-string 1 line)))
3558 (erc-log (format "cmd: TIME: %s" args))
3559 (erc-server-send (concat "TIME " args)))
3560 t)
3561 (t (erc-server-send "TIME"))))
3562 (defalias 'erc-cmd-DATE 'erc-cmd-TIME)
3564 (defun erc-cmd-TOPIC (topic)
3565 "Set or request the topic for a channel.
3567 or the empty string.
3569 If no #CHANNEL is given, the default channel is used. If TOPIC is
3570 given, the channel topic is modified, otherwise the current topic will
3571 be displayed."
3572 (cond
3573 ;; /topic #channel TOPIC
3575 (let ((ch (match-string 1 topic))
3576 (topic (match-string 2 topic)))
3577 (erc-log (format "cmd: TOPIC [%s]: %s" ch topic))
3578 (erc-server-send (format "TOPIC %s :%s" ch topic) nil ch))
3579 t)
3580 ;; /topic #channel
3582 (let ((ch (match-string 1 topic)))
3583 (erc-server-send (format "TOPIC %s" ch) nil ch)
3584 t))
3585 ;; /topic
3587 (let ((ch (erc-default-target)))
3588 (erc-server-send (format "TOPIC %s" ch) nil ch)
3589 t))
3590 ;; /topic TOPIC
3592 (let ((ch (erc-default-target))
3593 (topic (match-string 1 topic)))
3594 (if (and ch (erc-channel-p ch))
3595 (progn
3596 (erc-log (format "cmd: TOPIC [%s]: %s" ch topic))
3597 (erc-server-send (format "TOPIC %s :%s" ch topic) nil ch))
3598 (erc-display-message nil 'error (current-buffer) 'no-target)))
3599 t)
3600 (t nil)))
3601 (defalias 'erc-cmd-T 'erc-cmd-TOPIC)
3602 (put 'erc-cmd-TOPIC 'do-not-parse-args t)
3604 (defun erc-cmd-APPENDTOPIC (topic)
3605 "Append TOPIC to the current channel topic, separated by a space."
3606 (let ((oldtopic erc-channel-topic))
3607 ;; display help when given no arguments
3609 (signal 'wrong-number-of-arguments nil))
3610 ;; strip trailing ^O
3612 (erc-cmd-TOPIC (concat (match-string 1 oldtopic) topic)))))
3613 (defalias 'erc-cmd-AT 'erc-cmd-APPENDTOPIC)
3614 (put 'erc-cmd-APPENDTOPIC 'do-not-parse-args t)
3616 (defun erc-cmd-CLEARTOPIC (&optional channel)
3617 "Clear the topic for a CHANNEL.
3618 If CHANNEL is not specified, clear the topic for the default channel."
3619 (interactive "sClear topic of channel (RET is current channel): ")
3620 (let ((chnl (or (and (erc-channel-p channel) channel) (erc-default-target))))
3621 (when chnl
3622 (erc-server-send (format "TOPIC %s :" chnl))
3623 t)))
3625 ;;; Banlists
3627 (defvar erc-channel-banlist nil
3628 "A list of bans seen for the current channel.
3630 Each ban is an alist of the form:
3631 (WHOSET . MASK)
3633 The property `received-from-server' indicates whether
3634 or not the ban list has been requested from the server.")
3635 (make-variable-buffer-local 'erc-channel-banlist)
3636 (put 'erc-channel-banlist 'received-from-server nil)
3638 (defun erc-cmd-BANLIST ()
3639 "Pretty-print the contents of `erc-channel-banlist'.
3641 The ban list is fetched from the server if necessary."
3642 (let ((chnl (erc-default-target))
3643 (chnl-name (buffer-name)))
3645 (cond
3646 ((not (erc-channel-p chnl))
3648 'active))
3650 ((not (get 'erc-channel-banlist 'received-from-server))
3651 (let ((old-367-hook erc-server-367-functions))
3652 (setq erc-server-367-functions 'erc-banlist-store
3653 erc-channel-banlist nil)
3654 ;; fetch the ban list then callback
3655 (erc-with-server-buffer
3656 (erc-once-with-server-event
3657 368
3658 (lambda (_proc _parsed)
3659 (with-current-buffer chnl-name
3660 (put 'erc-channel-banlist 'received-from-server t)
3661 (setq erc-server-367-functions old-367-hook)
3662 (erc-cmd-BANLIST)
3663 t)))
3664 (erc-server-send (format "MODE %s b" chnl)))))
3666 ((null erc-channel-banlist)
3667 (erc-display-line (erc-make-notice
3669 'active)
3670 (put 'erc-channel-banlist 'received-from-server nil))
3672 (t
3673 (let* ((erc-fill-column (or (and (boundp 'erc-fill-column)
3674 erc-fill-column)
3675 (and (boundp 'fill-column)
3676 fill-column)
3677 (1- (window-width))))
3678 (separator (make-string erc-fill-column ?=))
3679 (fmt (concat
3680 "%-" (number-to-string (/ erc-fill-column 2)) "s"
3681 "%" (number-to-string (/ erc-fill-column 2)) "s")))
3683 (erc-display-line
3685 (erc-default-target)))
3686 'active)
3688 (erc-display-line separator 'active)
3689 (erc-display-line (format fmt "Ban Mask" "Banned By") 'active)
3690 (erc-display-line separator 'active)
3692 (mapc
3693 (lambda (x)
3694 (erc-display-line
3695 (format fmt
3696 (truncate-string-to-width (cdr x) (/ erc-fill-column 2))
3697 (if (car x)
3698 (truncate-string-to-width (car x) (/ erc-fill-column 2))
3699 ""))
3700 'active))
3701 erc-channel-banlist)
3703 (erc-display-line (erc-make-notice "End of Ban list")
3704 'active)
3705 (put 'erc-channel-banlist 'received-from-server nil)))))
3706 t)
3708 (defalias 'erc-cmd-BL 'erc-cmd-BANLIST)
3710 (defun erc-cmd-MASSUNBAN ()
3711 "Mass Unban.
3713 Unban all currently banned users in the current channel."
3714 (let ((chnl (erc-default-target)))
3715 (cond
3717 ((not (erc-channel-p chnl))
3718 (erc-display-line
3720 'active))
3722 ((not (get 'erc-channel-banlist 'received-from-server))
3723 (let ((old-367-hook erc-server-367-functions))
3724 (setq erc-server-367-functions 'erc-banlist-store)
3725 ;; fetch the ban list then callback
3726 (erc-with-server-buffer
3727 (erc-once-with-server-event
3728 368
3729 (lambda (_proc _parsed)
3730 (with-current-buffer chnl
3731 (put 'erc-channel-banlist 'received-from-server t)
3732 (setq erc-server-367-functions old-367-hook)
3733 (erc-cmd-MASSUNBAN)
3734 t)))
3735 (erc-server-send (format "MODE %s b" chnl)))))
3737 (t (let ((bans (mapcar 'cdr erc-channel-banlist)))
3738 (when bans
3739 ;; Glob the bans into groups of three, and carry out the unban.
3740 ;; eg. /mode #foo -bbb a*!*@* b*!*@* c*!*@*
3741 (mapc
3742 (lambda (x)
3743 (erc-server-send
3744 (format "MODE %s -%s %s" (erc-default-target)
3745 (make-string (length x) ?b)
3746 (mapconcat 'identity x " "))))
3747 (erc-group-list bans 3))))
3748 t))))
3750 (defalias 'erc-cmd-MUB 'erc-cmd-MASSUNBAN)
3752 ;;;; End of IRC commands
3754 (defun erc-ensure-channel-name (channel)
3755 "Return CHANNEL if it is a valid channel name.
3756 Eventually add a # in front of it, if that turns it into a valid channel name."
3757 (if (erc-channel-p channel)
3758 channel
3759 (concat "#" channel)))
3761 (defun erc-grab-region (start end)
3762 "Copy the region between START and END in a recreatable format.
3764 Converts all the IRC text properties in each line of the region
3765 into control codes and writes them to a separate buffer. The
3766 resulting text may be used directly as a script to generate this
3767 text again."
3768 (interactive "r")
3769 (erc-set-active-buffer (current-buffer))
3770 (save-excursion
3771 (let* ((cb (current-buffer))
3772 (buf (generate-new-buffer erc-grab-buffer-name))
3773 (region (buffer-substring start end))
3774 (lines (erc-split-multiline-safe region)))
3775 (set-buffer buf)
3776 (dolist (line lines)
3778 (set-buffer cb)
3779 (switch-to-buffer-other-window buf)))
3780 (message "erc-grab-region doesn't grab colors etc. anymore. If you use this, please tell the maintainers.")
3781 (ding))
3783 (defun erc-display-prompt (&optional buffer pos prompt face)
3784 "Display PROMPT in BUFFER at position POS.
3785 Display an ERC prompt in BUFFER.
3787 If PROMPT is nil, one is constructed with the function `erc-prompt'.
3788 If BUFFER is nil, the `current-buffer' is used.
3789 If POS is nil, PROMPT will be displayed at `point'.
3790 If FACE is non-nil, it will be used to propertize the prompt. If it is nil,
3791 `erc-prompt-face' will be used."
3792 (let* ((prompt (or prompt (erc-prompt)))
3793 (l (length prompt))
3794 (ob (current-buffer)))
3795 ;; We cannot use save-excursion because we move point, therefore
3796 ;; we resort to the ol' ob trick to restore this.
3797 (when (and buffer (bufferp buffer))
3798 (set-buffer buffer))
3800 ;; now save excursion again to store where point and mark are
3801 ;; in the current buffer
3802 (save-excursion
3803 (setq pos (or pos (point)))
3804 (goto-char pos)
3805 (when (> l 0)
3806 ;; Do not extend the text properties when typing at the end
3807 ;; of the prompt, but stuff typed in front of the prompt
3808 ;; shall remain part of the prompt.
3809 (setq prompt (erc-propertize prompt
3810 'start-open t ; XEmacs
3811 'rear-nonsticky t ; Emacs
3812 'erc-prompt t
3813 'field t
3814 'front-sticky t
3815 'read-only t))
3816 (erc-put-text-property 0 (1- (length prompt))
3817 'face (or face 'erc-prompt-face)
3818 prompt)
3819 (insert prompt))
3820 ;; Set the input marker
3821 (set-marker erc-input-marker (point)))
3823 ;; Now we are back at the old position. If the prompt was
3824 ;; inserted here or before us, advance point by the length of
3825 ;; the prompt.
3826 (when (or (not pos) (<= (point) pos))
3827 (forward-char l))
3828 ;; Clear the undo buffer now, so the user can undo his stuff,
3829 ;; but not the stuff we did. Sneaky!
3830 (setq buffer-undo-list nil)
3831 (set-buffer ob)))
3833 ;; interactive operations
3835 (defun erc-input-message ()
3836 "Read input from the minibuffer."
3837 (interactive)
3838 (let ((minibuffer-allow-text-properties t)
3839 (read-map minibuffer-local-map))
3840 (insert (read-from-minibuffer "Message: "
3841 (string (if (featurep 'xemacs)
3842 last-command-char
3843 last-command-event)) read-map))
3844 (erc-send-current-line)))
3846 (defvar erc-action-history-list ()
3847 "History list for interactive action input.")
3849 (defun erc-input-action ()
3850 "Interactively input a user action and send it to IRC."
3851 (interactive "")
3852 (erc-set-active-buffer (current-buffer))
3853 (let ((action (read-from-minibuffer
3854 "Action: " nil nil nil 'erc-action-history-list)))
3856 (erc-send-action (erc-default-target) action))))
3858 (defun erc-join-channel (channel &optional key)
3859 "Join CHANNEL.
3861 If `point' is at the beginning of a channel name, use that as default."
3862 (interactive
3863 (list
3865 (table (when (erc-server-buffer-live-p)
3866 (set-buffer (process-buffer erc-server-process))
3867 erc-channel-list)))
3868 (completing-read "Join channel: " table nil nil nil nil chnl))
3869 (when (or current-prefix-arg erc-prompt-for-channel-key)
3870 (read-from-minibuffer "Channel key (RET for none): " nil))))
3871 (erc-cmd-JOIN channel (when (>= (length key) 1) key)))
3873 (defun erc-part-from-channel (reason)
3874 "Part from the current channel and prompt for a REASON."
3875 (interactive
3876 (list
3877 (if (and (boundp 'reason) (stringp reason) (not (string= reason "")))
3878 reason
3879 (read-from-minibuffer (concat "Reason for leaving " (erc-default-target)
3880 ": ")))))
3881 (erc-cmd-PART (concat (erc-default-target)" " reason)))
3883 (defun erc-set-topic (topic)
3884 "Prompt for a TOPIC for the current channel."
3885 (interactive
3886 (list
3887 (read-from-minibuffer
3888 (concat "Set topic of " (erc-default-target) ": ")
3889 (when erc-channel-topic
3890 (let ((ss (split-string erc-channel-topic "\C-o")))
3891 (cons (apply 'concat (if (cdr ss) (butlast ss) ss))
3892 0))))))
3893 (let ((topic-list (split-string topic "\C-o"))) ; strip off the topic setter
3894 (erc-cmd-TOPIC (concat (erc-default-target) " " (car topic-list)))))
3896 (defun erc-set-channel-limit (&optional limit)
3897 "Set a LIMIT for the current channel. Remove limit if nil.
3898 Prompt for one if called interactively."
3899 (interactive (list (read-from-minibuffer
3900 (format "Limit for %s (RET to remove limit): "
3901 (erc-default-target)))))
3902 (let ((tgt (erc-default-target)))
3903 (erc-server-send (if (and limit (>= (length limit) 1))
3904 (format "MODE %s +l %s" tgt limit)
3905 (format "MODE %s -l" tgt)))))
3907 (defun erc-set-channel-key (&optional key)
3908 "Set a KEY for the current channel. Remove key if nil.
3909 Prompt for one if called interactively."
3910 (interactive (list (read-from-minibuffer
3911 (format "Key for %s (RET to remove key): "
3912 (erc-default-target)))))
3913 (let ((tgt (erc-default-target)))
3914 (erc-server-send (if (and key (>= (length key) 1))
3915 (format "MODE %s +k %s" tgt key)
3916 (format "MODE %s -k" tgt)))))
3918 (defun erc-quit-server (reason)
3919 "Disconnect from current server after prompting for REASON.
3920 `erc-quit-reason' works with this just like with `erc-cmd-QUIT'."
3921 (interactive (list (read-from-minibuffer
3922 (format "Reason for quitting %s: "
3923 (or erc-server-announced-name
3924 erc-session-server)))))
3925 (erc-cmd-QUIT reason))
3927 ;; Movement of point
3929 (defun erc-bol ()
3930 "Move `point' to the beginning of the current line.
3932 This places `point' just after the prompt, or at the beginning of the line."
3933 (interactive)
3934 (forward-line 0)
3935 (when (get-text-property (point) 'erc-prompt)
3936 (goto-char erc-input-marker))
3937 (point))
3939 (defun erc-kill-input ()
3940 "Kill current input line using `erc-bol' followed by `kill-line'."
3941 (interactive)
3942 (when (and (erc-bol)
3943 (/= (point) (point-max))) ;; Prevent a (ding) and an error when
3944 ;; there's nothing to kill
3945 (if (boundp 'erc-input-ring-index)
3946 (setq erc-input-ring-index nil))
3947 (kill-line)))
3949 (defun erc-complete-word-at-point ()
3950 (run-hook-with-args-until-success 'erc-complete-functions))
3952 (define-obsolete-function-alias 'erc-complete-word 'completion-at-point "24.1")
3954 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3955 ;;
3956 ;; IRC SERVER INPUT HANDLING
3957 ;;
3958 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
3960 ;;;; New Input parsing
3962 ; Stolen from ZenIRC. I just wanna test this code, so here is
3963 ; experiment area.
3965 (defcustom erc-default-server-hook '(erc-debug-missing-hooks
3966 erc-default-server-handler)
3967 "Default for server messages which aren't covered by `erc-server-hooks'."
3968 :group 'erc-server-hooks
3969 :type 'hook)
3971 (defun erc-default-server-handler (proc parsed)
3972 "Default server handler.
3974 Displays PROC and PARSED appropriately using `erc-display-message'."
3975 (erc-display-message
3976 parsed 'notice proc
3977 (mapconcat
3978 'identity
3979 (let (res)
3980 (mapc #'(lambda (x)
3981 (if (stringp x)
3982 (setq res (append res (list x)))))
3983 parsed)
3984 res)
3985 " ")))
3987 (defvar erc-server-vectors
3988 '(["msgtype" "sender" "to" "arg1" "arg2" "arg3" "..."])
3989 "List of received server messages which ERC does not specifically handle.
3990 See `erc-debug-missing-hooks'.")
3991 ;(make-variable-buffer-local 'erc-server-vectors)
3993 (defun erc-debug-missing-hooks (_proc parsed)
3994 "Add PARSED server message ERC does not yet handle to `erc-server-vectors'.
3995 These vectors can be helpful when adding new server message handlers to ERC.
3996 See `erc-default-server-hook'."
3997 (nconc erc-server-vectors (list parsed))
3998 nil)
4000 (defun erc-query (target server)
4001 "Open a query buffer on TARGET, using SERVER.
4002 To change how this query window is displayed, use `let' to bind
4003 `erc-join-buffer' before calling this."
4004 (unless (and server
4005 (buffer-live-p server)
4006 (set-buffer server))
4007 (error "Couldn't switch to server buffer"))
4008 (let ((buf (erc-open erc-session-server
4009 erc-session-port
4010 (erc-current-nick)
4011 erc-session-user-full-name
4012 nil
4013 nil
4014 (list target)
4015 target
4016 erc-server-process)))
4017 (unless buf
4018 (error "Couldn't open query window"))
4019 (erc-update-mode-line)
4020 buf))
4022 (defcustom erc-auto-query 'window-noselect
4023 "If non-nil, create a query buffer each time you receive a private message.
4024 If the buffer doesn't already exist, it is created.
4026 This can be set to a symbol, to control how the new query window
4027 should appear. The default behavior is to display the buffer in
4028 a new window, but not to select it. See the documentation for
4029 `erc-join-buffer' for a description of the available choices."
4030 :group 'erc-query
4031 :type '(choice (const :tag "Don't create query window" nil)
4032 (const :tag "Split window and select" window)
4033 (const :tag "Split window, don't select" window-noselect)
4034 (const :tag "New frame" frame)
4035 (const :tag "Bury in new buffer" bury)
4036 (const :tag "Use current buffer" buffer)
4037 (const :tag "Use current buffer" t)))
4039 (defcustom erc-query-on-unjoined-chan-privmsg t
4040 "If non-nil create query buffer on receiving any PRIVMSG at all.
4041 This includes PRIVMSGs directed to channels. If you are using an IRC
4042 bouncer, such as dircproxy, to keep a log of channels when you are
4043 disconnected, you should set this option to t."
4044 :group 'erc-query
4045 :type 'boolean)
4047 (defcustom erc-format-query-as-channel-p t
4048 "If non-nil, format text from others in a query buffer like in a channel,
4049 otherwise format like a private message."
4050 :group 'erc-query
4051 :type 'boolean)
4053 (defcustom erc-minibuffer-notice nil
4054 "If non-nil, print ERC notices for the user in the minibuffer.
4055 Only happens when the session buffer isn't visible."
4056 :group 'erc-display
4057 :type 'boolean)
4059 (defcustom erc-minibuffer-ignored nil
4060 "If non-nil, print a message in the minibuffer if we ignored something."
4061 :group 'erc-ignore
4062 :type 'boolean)
4064 (defun erc-wash-quit-reason (reason nick login host)
4065 "Remove duplicate text from quit REASON.
4066 Specifically in relation to NICK (user@host) information. Returns REASON
4067 unmodified if nothing can be removed.
4070 (setq nick (regexp-quote nick)
4071 login (regexp-quote login)
4072 host (regexp-quote host))
4076 (concat (match-string 1 reason) ": " (match-string 2 reason)))
4079 (match-string 1 reason))
4080 reason))
4082 (defun erc-nickname-in-use (nick reason)
4083 "If NICK is unavailable, tell the user the REASON.
4085 See also `erc-display-error-notice'."
4086 (if (or (not erc-try-new-nick-p)
4087 ;; how many default-nicks are left + one more try...
4088 (eq erc-nick-change-attempt-count
4089 (if (consp erc-nick)
4090 (+ (length erc-nick) 1)
4091 1)))
4092 (erc-display-error-notice
4093 nil
4094 (format "Nickname %s is %s, try another." nick reason))
4095 (setq erc-nick-change-attempt-count (+ erc-nick-change-attempt-count 1))
4096 (let ((newnick (nth 1 erc-default-nicks))
4097 (nicklen (cdr (assoc "NICKLEN"
4098 (erc-with-server-buffer
4099 erc-server-parameters)))))
4100 (setq erc-bad-nick t)
4101 ;; try to use a different nick
4102 (if erc-default-nicks
4103 (setq erc-default-nicks (cdr erc-default-nicks)))
4104 (if (not newnick)
4105 (setq newnick (concat (truncate-string-to-width
4106 nick
4107 (if (and erc-server-connected nicklen)
4108 (- (string-to-number nicklen)
4109 (length erc-nick-uniquifier))
4110 ;; rfc2812 max nick length = 9
4111 ;; we must assume this is the
4112 ;; server's setting if we haven't
4113 ;; established a connection yet
4114 (- 9 (length erc-nick-uniquifier))))
4115 erc-nick-uniquifier)))
4116 (erc-cmd-NICK newnick)
4117 (erc-display-error-notice
4118 nil
4119 (format "Nickname %s is %s, trying %s"
4120 nick reason newnick)))))
4122 ;;; Server messages
4124 (defgroup erc-server-hooks nil
4125 "Server event callbacks.
4126 Every server event - like numeric replies - has its own hook.
4127 Those hooks are all called using `run-hook-with-args-until-success'.
4128 They receive as first argument the process object from where the event
4129 originated from,
4130 and as second argument the event parsed as a vector."
4131 :group 'erc-hooks)
4133 (defun erc-display-server-message (_proc parsed)
4134 "Display the message sent by the server as a notice."
4135 (erc-display-message
4136 parsed 'notice 'active (erc-response.contents parsed)))
4138 (defun erc-auto-query (proc parsed)
4139 ;; FIXME: This needs more documentation, unless it's not a user function --
4140 ;; Lawrence 2004-01-08
4141 "Put this on `erc-server-PRIVMSG-functions'."
4142 (when erc-auto-query
4143 (let* ((nick (car (erc-parse-user (erc-response.sender parsed))))
4144 (target (car (erc-response.command-args parsed)))
4145 (msg (erc-response.contents parsed))
4146 (query (if (not erc-query-on-unjoined-chan-privmsg)
4147 nick
4148 (if (erc-current-nick-p target)
4149 nick
4150 target))))
4151 (and (not (erc-ignored-user-p (erc-response.sender parsed)))
4152 (or erc-query-on-unjoined-chan-privmsg
4153 (string= target (erc-current-nick)))
4154 (not (erc-get-buffer query proc))
4155 (not (erc-is-message-ctcp-and-not-action-p msg))
4156 (let ((erc-query-display erc-auto-query))
4157 (erc-cmd-QUERY query))
4158 nil))))
4160 (defun erc-is-message-ctcp-p (message)
4161 "Check if MESSAGE is a CTCP message or not."
4164 (defun erc-is-message-ctcp-and-not-action-p (message)
4165 "Check if MESSAGE is a CTCP message or not."
4166 (and (erc-is-message-ctcp-p message)
4169 (defun erc-format-privmessage (nick msg privp msgp)
4170 "Format a PRIVMSG in an insertable fashion."
4171 (let* ((mark-s (if msgp (if privp "*" "<") "-"))
4172 (mark-e (if msgp (if privp "*" ">") "-"))
4173 (str (format "%s%s%s %s" mark-s nick mark-e msg))
4174 (nick-face (if privp 'erc-nick-msg-face 'erc-nick-default-face))
4175 (msg-face (if privp 'erc-direct-msg-face 'erc-default-face)))
4176 ;; add text properties to text before the nick, the nick and after the nick
4177 (erc-put-text-property 0 (length mark-s) 'face msg-face str)
4178 (erc-put-text-property (length mark-s) (+ (length mark-s) (length nick))
4179 'face nick-face str)
4180 (erc-put-text-property (+ (length mark-s) (length nick)) (length str)
4181 'face msg-face str)
4182 str))
4184 (defcustom erc-format-nick-function 'erc-format-nick
4185 "Function to format a nickname for message display."
4186 :group 'erc-display
4187 :type 'function)
4189 (defun erc-format-nick (&optional user _channel-data)
4190 "Return the nickname of USER.
4191 See also `erc-format-nick-function'."
4192 (when user (erc-server-user-nickname user)))
4194 (defun erc-format-@nick (&optional user channel-data)
4195 "Format the nickname of USER showing if USER is an operator or has voice.
4197 Use CHANNEL-DATA to determine op and voice status.
4198 See also `erc-format-nick-function'."
4199 (when user
4200 (let ((op (and channel-data (erc-channel-user-op channel-data) "@"))
4201 (voice (and channel-data (erc-channel-user-voice channel-data) "+")))
4202 (concat voice op (erc-server-user-nickname user)))))
4204 (defun erc-format-my-nick ()
4205 "Return the beginning of this user's message, correctly propertized."
4206 (if erc-show-my-nick
4207 (let ((open "<")
4208 (close "> ")
4209 (nick (erc-current-nick)))
4210 (concat
4211 (erc-propertize open 'face 'erc-default-face)
4212 (erc-propertize nick 'face 'erc-my-nick-face)
4213 (erc-propertize close 'face 'erc-default-face)))
4214 (let ((prefix "> "))
4215 (erc-propertize prefix 'face 'erc-default-face))))
4217 (defun erc-echo-notice-in-default-buffer (s parsed buffer _sender)
4218 "Echos a private notice in the default buffer, namely the
4219 target buffer specified by BUFFER, or there is no target buffer,
4220 the server buffer. This function is designed to be added to
4221 either `erc-echo-notice-hook' or `erc-echo-notice-always-hook',
4222 and always returns t."
4223 (erc-display-message parsed nil buffer s)
4224 t)
4226 (defun erc-echo-notice-in-target-buffer (s parsed buffer _sender)
4227 "Echos a private notice in BUFFER, if BUFFER is non-nil. This
4228 function is designed to be added to either `erc-echo-notice-hook'
4229 or `erc-echo-notice-always-hook', and returns non-nil if BUFFER
4230 is non-nil."
4231 (if buffer
4232 (progn (erc-display-message parsed nil buffer s) t)
4233 nil))
4235 (defun erc-echo-notice-in-minibuffer (s _parsed _buffer _sender)
4236 "Echos a private notice in the minibuffer. This function is
4237 designed to be added to either `erc-echo-notice-hook' or
4238 `erc-echo-notice-always-hook', and always returns t."
4239 (message "%s" (concat "NOTICE: " s))
4240 t)
4242 (defun erc-echo-notice-in-server-buffer (s parsed _buffer _sender)
4243 "Echos a private notice in the server buffer. This function is
4244 designed to be added to either `erc-echo-notice-hook' or
4245 `erc-echo-notice-always-hook', and always returns t."
4246 (erc-display-message parsed nil nil s)
4247 t)
4249 (defun erc-echo-notice-in-active-non-server-buffer (s parsed _buffer _sender)
4250 "Echos a private notice in the active buffer if the active
4251 buffer is not the server buffer. This function is designed to be
4252 added to either `erc-echo-notice-hook' or
4253 `erc-echo-notice-always-hook', and returns non-nil if the active
4254 buffer is not the server buffer."
4255 (if (not (eq (erc-server-buffer) (erc-active-buffer)))
4256 (progn (erc-display-message parsed nil 'active s) t)
4257 nil))
4259 (defun erc-echo-notice-in-active-buffer (s parsed _buffer _sender)
4260 "Echos a private notice in the active buffer. This function is
4261 designed to be added to either `erc-echo-notice-hook' or
4262 `erc-echo-notice-always-hook', and always returns t."
4263 (erc-display-message parsed nil 'active s)
4264 t)
4266 (defun erc-echo-notice-in-user-buffers (s parsed _buffer sender)
4267 "Echos a private notice in all of the buffers for which SENDER
4268 is a member. This function is designed to be added to either
4269 `erc-echo-notice-hook' or `erc-echo-notice-always-hook', and
4270 returns non-nil if there is at least one buffer for which the
4271 sender is a member.
4273 See also: `erc-echo-notice-in-first-user-buffer',
4274 `erc-buffer-list-with-nick'."
4275 (let ((buffers (erc-buffer-list-with-nick sender erc-server-process)))
4276 (if buffers
4277 (progn (erc-display-message parsed nil buffers s) t)
4278 nil)))
4280 (defun erc-echo-notice-in-user-and-target-buffers (s parsed buffer sender)
4281 "Echos a private notice in BUFFER and in all of the buffers for
4282 which SENDER is a member. This function is designed to be added
4283 to either `erc-echo-notice-hook' or
4284 `erc-echo-notice-always-hook', and returns non-nil if there is
4285 at least one buffer for which the sender is a member or the
4286 default target.
4288 See also: `erc-echo-notice-in-user-buffers',
4289 `erc-buffer-list-with-nick'."
4290 (let ((buffers (erc-buffer-list-with-nick sender erc-server-process)))
4291 (unless (memq buffer buffers) (push buffer buffers))
4292 (if buffers ;FIXME: How could it be nil?
4293 (progn (erc-display-message parsed nil buffers s) t)
4294 nil)))
4296 (defun erc-echo-notice-in-first-user-buffer (s parsed _buffer sender)
4297 "Echos a private notice in one of the buffers for which SENDER
4298 is a member. This function is designed to be added to either
4299 `erc-echo-notice-hook' or `erc-echo-notice-always-hook', and
4300 returns non-nil if there is at least one buffer for which the
4301 sender is a member.
4303 See also: `erc-echo-notice-in-user-buffers',
4304 `erc-buffer-list-with-nick'."
4305 (let ((buffers (erc-buffer-list-with-nick sender erc-server-process)))
4306 (if buffers
4307 (progn (erc-display-message parsed nil (car buffers) s) t)
4308 nil)))
4310 ;;; Ban manipulation
4312 (defun erc-banlist-store (proc parsed)
4313 "Record ban entries for a channel."
4314 (pcase-let ((`(,channel ,mask ,whoset)
4315 (cdr (erc-response.command-args parsed))))
4316 ;; Determine to which buffer the message corresponds
4317 (let ((buffer (erc-get-buffer channel proc)))
4318 (with-current-buffer buffer
4319 (unless (member (cons whoset mask) erc-channel-banlist)
4320 (setq erc-channel-banlist (cons (cons whoset mask)
4321 erc-channel-banlist))))))
4322 nil)
4324 (defun erc-banlist-finished (proc parsed)
4325 "Record that we have received the banlist."
4326 (let* ((channel (nth 1 (erc-response.command-args parsed)))
4327 (buffer (erc-get-buffer channel proc)))
4328 (with-current-buffer buffer
4329 (put 'erc-channel-banlist 'received-from-server t)))
4330 t) ; suppress the 'end of banlist' message
4332 (defun erc-banlist-update (proc parsed)
4333 "Check MODE commands for bans and update the banlist appropriately."
4334 ;; FIXME: Possibly incorrect. -- Lawrence 2004-05-11
4335 (let* ((tgt (car (erc-response.command-args parsed)))
4336 (mode (erc-response.contents parsed))
4337 (whoset (erc-response.sender parsed))
4338 (buffer (erc-get-buffer tgt proc)))
4339 (when buffer
4340 (with-current-buffer buffer
4341 (cond ((not (get 'erc-channel-banlist 'received-from-server)) nil)
4343 ;; This is a ban
4344 (cond
4345 ((string-match "^-" mode)
4346 ;; Remove the unbanned masks from the ban list
4347 (setq erc-channel-banlist
4348 (erc-delete-if
4349 #'(lambda (y)
4350 (member (upcase (cdr y))
4351 (mapcar #'upcase
4352 (cdr (split-string mode)))))
4353 erc-channel-banlist)))
4354 ((string-match "^+" mode)
4355 ;; Add the banned mask(s) to the ban list
4356 (mapc
4357 (lambda (mask)
4358 (unless (member (cons whoset mask) erc-channel-banlist)
4359 (setq erc-channel-banlist
4360 (cons (cons whoset mask) erc-channel-banlist))))
4361 (cdr (split-string mode))))))))))
4362 nil)
4364 ;; used for the banlist cmds
4365 (defun erc-group-list (list n)
4366 "Group LIST into sublists of length N."
4367 (cond ((null list) nil)
4368 ((null (nthcdr n list)) (list list))
4369 (t (cons (erc-subseq list 0 n) (erc-group-list (nthcdr n list) n)))))
4372 ;;; MOTD numreplies
4374 (defun erc-handle-login ()
4375 "Handle the logging in process of connection."
4376 (unless erc-logged-in
4377 (setq erc-logged-in t)
4379 ;; execute a startup script
4380 (let ((f (erc-select-startup-file)))
4381 (when f
4382 (erc-load-script f)))))
4384 (defun erc-connection-established (proc parsed)
4385 "Run just after connection.
4387 Set user modes and run `erc-after-connect' hook."
4388 (with-current-buffer (process-buffer proc)
4389 (unless erc-server-connected ; only once per session
4390 (let ((server (or erc-server-announced-name
4391 (erc-response.sender parsed)))
4392 (nick (car (erc-response.command-args parsed)))
4393 (buffer (process-buffer proc)))
4394 (setq erc-server-connected t)
4395 (erc-update-mode-line)
4396 (erc-set-initial-user-mode nick buffer)
4397 (erc-server-setup-periodical-ping buffer)
4398 (run-hook-with-args 'erc-after-connect server nick)))))
4400 (defun erc-set-initial-user-mode (nick buffer)
4401 "If `erc-user-mode' is non-nil for NICK, set the user modes.
4402 The server buffer is given by BUFFER."
4403 (with-current-buffer buffer
4404 (when erc-user-mode
4405 (let ((mode (if (functionp erc-user-mode)
4406 (funcall erc-user-mode)
4407 erc-user-mode)))
4408 (when (stringp mode)
4409 (erc-log (format "changing mode for %s to %s" nick mode))
4410 (erc-server-send (format "MODE %s %s" nick mode)))))))
4412 (defun erc-display-error-notice (parsed string)
4413 "Display STRING as an error notice.
4415 See also `erc-display-message'."
4416 (erc-display-message
4417 parsed '(notice error) 'active string))
4419 (defun erc-process-ctcp-query (proc parsed nick login host)
4420 ;; FIXME: This needs a proper docstring -- Lawrence 2004-01-08
4421 "Process a CTCP query."
4422 (let ((queries (delete "" (split-string (erc-response.contents parsed)
4423 "\C-a"))))
4424 (if (> (length queries) 4)
4425 (erc-display-message
4426 parsed (list 'notice 'error) proc 'ctcp-too-many)
4427 (if (= 0 (length queries))
4428 (erc-display-message
4429 parsed (list 'notice 'error) proc
4430 'ctcp-empty ?n nick)
4431 (while queries
4432 (let* ((type (upcase (car (split-string (car queries)))))
4433 (hook (intern-soft (concat "erc-ctcp-query-" type "-hook"))))
4434 (if (and hook (boundp hook))
4435 (if (string-equal type "ACTION")
4436 (run-hook-with-args-until-success
4437 hook proc parsed nick login host
4438 (car (erc-response.command-args parsed))
4439 (car queries))
4440 (when erc-paranoid
4441 (if (erc-current-nick-p
4442 (car (erc-response.command-args parsed)))
4443 (erc-display-message
4444 parsed 'error 'active 'ctcp-request
4445 ?n nick ?u login ?h host ?r (car queries))
4446 (erc-display-message
4447 parsed 'error 'active 'ctcp-request-to
4448 ?n nick ?u login ?h host ?r (car queries)
4449 ?t (car (erc-response.command-args parsed)))))
4450 (run-hook-with-args-until-success
4451 hook proc nick login host
4452 (car (erc-response.command-args parsed))
4453 (car queries)))
4454 (erc-display-message
4455 parsed (list 'notice 'error) proc
4456 'undefined-ctcp)))
4457 (setq queries (cdr queries)))))))
4459 (defvar erc-ctcp-query-ACTION-hook '(erc-ctcp-query-ACTION))
4461 (defun erc-ctcp-query-ACTION (proc parsed nick login host to msg)
4462 "Respond to a CTCP ACTION query."
4464 (let ((s (match-string 1 msg))
4465 (buf (or (erc-get-buffer to proc)
4466 (erc-get-buffer nick proc)
4467 (process-buffer proc))))
4468 (erc-display-message
4469 parsed 'action buf
4470 'ACTION ?n nick ?u login ?h host ?a s))))
4472 (defvar erc-ctcp-query-CLIENTINFO-hook '(erc-ctcp-query-CLIENTINFO))
4474 (defun erc-ctcp-query-CLIENTINFO (_proc nick _login _host _to msg)
4475 "Respond to a CTCP CLIENTINFO query."
4477 (let ((s (erc-client-info (erc-trim-string (match-string 1 msg)))))
4478 (unless erc-disable-ctcp-replies
4479 (erc-send-ctcp-notice nick (format "CLIENTINFO %s" s)))))
4480 nil)
4482 (defvar erc-ctcp-query-ECHO-hook '(erc-ctcp-query-ECHO))
4483 (defun erc-ctcp-query-ECHO (_proc nick _login _host _to msg)
4484 "Respond to a CTCP ECHO query."
4486 (let ((s (match-string 1 msg)))
4487 (unless erc-disable-ctcp-replies
4488 (erc-send-ctcp-notice nick (format "ECHO %s" s)))))
4489 nil)
4491 (defvar erc-ctcp-query-FINGER-hook '(erc-ctcp-query-FINGER))
4492 (defun erc-ctcp-query-FINGER (_proc nick _login _host _to _msg)
4493 "Respond to a CTCP FINGER query."
4494 (unless erc-disable-ctcp-replies
4495 (let ((s (if erc-anonymous-login
4496 (format "FINGER I'm %s." (erc-current-nick))
4497 (format "FINGER %s (%s@%s)."
4498 (user-full-name)
4499 (user-login-name)
4500 (system-name))))
4501 (ns (erc-time-diff erc-server-last-sent-time (erc-current-time))))
4502 (when (> ns 0)
4503 (setq s (concat s " Idle for " (erc-sec-to-time ns))))
4504 (erc-send-ctcp-notice nick s)))
4505 nil)
4507 (defvar erc-ctcp-query-PING-hook '(erc-ctcp-query-PING))
4508 (defun erc-ctcp-query-PING (_proc nick _login _host _to msg)
4509 "Respond to a CTCP PING query."
4511 (unless erc-disable-ctcp-replies
4512 (let ((arg (match-string 1 msg)))
4513 (erc-send-ctcp-notice nick (format "PING %s" arg)))))
4514 nil)
4516 (defvar erc-ctcp-query-TIME-hook '(erc-ctcp-query-TIME))
4517 (defun erc-ctcp-query-TIME (_proc nick _login _host _to _msg)
4518 "Respond to a CTCP TIME query."
4519 (unless erc-disable-ctcp-replies
4520 (erc-send-ctcp-notice nick (format "TIME %s" (current-time-string))))
4521 nil)
4523 (defvar erc-ctcp-query-USERINFO-hook '(erc-ctcp-query-USERINFO))
4524 (defun erc-ctcp-query-USERINFO (_proc nick _login _host _to _msg)
4525 "Respond to a CTCP USERINFO query."
4526 (unless erc-disable-ctcp-replies
4527 (erc-send-ctcp-notice nick (format "USERINFO %s" erc-user-information)))
4528 nil)
4530 (defvar erc-ctcp-query-VERSION-hook '(erc-ctcp-query-VERSION))
4531 (defun erc-ctcp-query-VERSION (_proc nick _login _host _to _msg)
4532 "Respond to a CTCP VERSION query."
4533 (unless erc-disable-ctcp-replies
4534 (erc-send-ctcp-notice
4535 nick (format
4536 "VERSION \C-bERC\C-b %s - an IRC client for emacs (\C-b%s\C-b)"
4537 erc-version-string
4538 erc-official-location)))
4539 nil)
4541 (defun erc-process-ctcp-reply (proc parsed nick login host msg)
4542 "Process MSG as a CTCP reply."
4543 (let* ((type (car (split-string msg)))
4544 (hook (intern (concat "erc-ctcp-reply-" type "-hook"))))
4545 (if (boundp hook)
4546 (run-hook-with-args-until-success
4547 hook proc nick login host
4548 (car (erc-response.command-args parsed)) msg)
4549 (erc-display-message
4550 parsed 'notice 'active
4551 'CTCP-UNKNOWN ?n nick ?u login ?h host ?m msg))))
4553 (defvar erc-ctcp-reply-ECHO-hook '(erc-ctcp-reply-ECHO))
4554 (defun erc-ctcp-reply-ECHO (_proc nick _login _host _to msg)
4555 "Handle a CTCP ECHO reply."
4557 (let ((message (match-string 1 msg)))
4558 (erc-display-message
4559 nil '(notice action) 'active
4560 'CTCP-ECHO ?n nick ?m message)))
4561 nil)
4563 (defvar erc-ctcp-reply-CLIENTINFO-hook '(erc-ctcp-reply-CLIENTINFO))
4564 (defun erc-ctcp-reply-CLIENTINFO (_proc nick _login _host _to msg)
4565 "Handle a CTCP CLIENTINFO reply."
4567 (let ((message (match-string 1 msg)))
4568 (erc-display-message
4569 nil 'notice 'active
4570 'CTCP-CLIENTINFO ?n nick ?m message)))
4571 nil)
4573 (defvar erc-ctcp-reply-FINGER-hook '(erc-ctcp-reply-FINGER))
4574 (defun erc-ctcp-reply-FINGER (_proc nick _login _host _to msg)
4575 "Handle a CTCP FINGER reply."
4577 (let ((message (match-string 1 msg)))
4578 (erc-display-message
4579 nil 'notice 'active
4580 'CTCP-FINGER ?n nick ?m message)))
4581 nil)
4583 (defvar erc-ctcp-reply-PING-hook '(erc-ctcp-reply-PING))
4584 (defun erc-ctcp-reply-PING (_proc nick _login _host _to msg)
4585 "Handle a CTCP PING reply."
4587 nil
4588 (let ((time (match-string 1 msg)))
4589 (condition-case nil
4590 (let ((delta (erc-time-diff (string-to-number time)
4591 (erc-current-time))))
4592 (erc-display-message
4593 nil 'notice 'active
4594 'CTCP-PING ?n nick
4595 ?t (erc-sec-to-time delta)))
4596 (range-error
4597 (erc-display-message
4598 nil 'error 'active
4599 'bad-ping-response ?n nick ?t time))))))
4601 (defvar erc-ctcp-reply-TIME-hook '(erc-ctcp-reply-TIME))
4602 (defun erc-ctcp-reply-TIME (_proc nick _login _host _to msg)
4603 "Handle a CTCP TIME reply."
4605 (let ((message (match-string 1 msg)))
4606 (erc-display-message
4607 nil 'notice 'active
4608 'CTCP-TIME ?n nick ?m message)))
4609 nil)
4611 (defvar erc-ctcp-reply-VERSION-hook '(erc-ctcp-reply-VERSION))
4612 (defun erc-ctcp-reply-VERSION (_proc nick _login _host _to msg)
4613 "Handle a CTCP VERSION reply."
4615 (let ((message (match-string 1 msg)))
4616 (erc-display-message
4617 nil 'notice 'active
4618 'CTCP-VERSION ?n nick ?m message)))
4619 nil)
4621 (defun erc-process-away (proc away-p)
4622 "Toggle the away status of the user depending on the value of AWAY-P.
4624 If nil, set the user as away.
4625 If non-nil, return from being away."
4626 (let ((sessionbuf (process-buffer proc)))
4627 (when sessionbuf
4628 (with-current-buffer sessionbuf
4629 (when erc-away-nickname
4630 (erc-log (format "erc-process-away: away-nick: %s, away-p: %s"
4631 erc-away-nickname away-p))
4632 (erc-cmd-NICK (if away-p
4633 erc-away-nickname
4634 erc-nick)))
4635 (cond
4636 (away-p
4637 (setq erc-away (current-time)))
4638 (t
4639 (let ((away-time erc-away))
4640 ;; away must be set to NIL BEFORE sending anything to prevent
4641 ;; an infinite recursion
4642 (setq erc-away nil)
4643 (with-current-buffer (erc-active-buffer)
4644 (when erc-public-away-p
4645 (erc-send-action
4646 (erc-default-target)
4647 (if away-time
4648 (format "is back (gone for %s)"
4649 (erc-sec-to-time
4650 (erc-time-diff
4651 (erc-emacs-time-to-erc-time away-time)
4652 (erc-current-time))))
4653 "is back")))))))))
4654 (erc-update-mode-line)))
4656 ;;;; List of channel members handling
4658 (defun erc-channel-begin-receiving-names ()
4659 "Internal function.
4661 Used when a channel names list is about to be received. Should
4662 be called with the current buffer set to the channel buffer.
4664 See also `erc-channel-end-receiving-names'."
4665 (setq erc-channel-new-member-names (make-hash-table :test 'equal)))
4667 (defun erc-channel-end-receiving-names ()
4668 "Internal function.
4670 Used to fix `erc-channel-users' after a channel names list has been
4671 received. Should be called with the current buffer set to the
4672 channel buffer.
4674 See also `erc-channel-begin-receiving-names'."
4675 (maphash (lambda (nick _user)
4676 (if (null (gethash nick erc-channel-new-member-names))
4677 (erc-remove-channel-user nick)))
4678 erc-channel-users)
4679 (setq erc-channel-new-member-names nil))
4681 (defun erc-parse-prefix ()
4682 "Return an alist of valid prefix character types and their representations.
4683 Example: (operator) o => @, (voiced) v => +."
4684 (let ((str (or (cdr (assoc "PREFIX" (erc-with-server-buffer
4685 erc-server-parameters)))
4686 ;; provide a sane default
4687 "(ov)@+"))
4688 types chars)
4690 (setq types (match-string 1 str)
4691 chars (match-string 2 str))
4692 (let ((len (min (length types) (length chars)))
4693 (i 0)
4694 (alist nil))
4695 (while (< i len)
4696 (setq alist (cons (cons (elt types i) (elt chars i))
4697 alist))
4698 (setq i (1+ i)))
4699 alist))))
4701 (defun erc-channel-receive-names (names-string)
4702 "This function is for internal use only.
4704 Update `erc-channel-users' according to NAMES-STRING.
4705 NAMES-STRING is a string listing some of the names on the
4706 channel."
4707 (let (prefix op-ch voice-ch names name op voice)
4708 (setq prefix (erc-parse-prefix))
4709 (setq op-ch (cdr (assq ?o prefix))
4710 voice-ch (cdr (assq ?v prefix)))
4711 ;; We need to delete "" because in XEmacs, (split-string "a ")
4712 ;; returns ("a" "").
4713 (setq names (delete "" (split-string names-string)))
4714 (let ((erc-channel-members-changed-hook nil))
4715 (dolist (item names)
4716 (let ((updatep t))
4717 (if (rassq (elt item 0) prefix)
4718 (cond ((= (length item) 1)
4719 (setq updatep nil))
4720 ((eq (elt item 0) op-ch)
4721 (setq name (substring item 1)
4722 op 'on
4723 voice 'off))
4724 ((eq (elt item 0) voice-ch)
4725 (setq name (substring item 1)
4726 op 'off
4727 voice 'on))
4728 (t (setq name (substring item 1)
4729 op 'off
4730 voice 'off)))
4731 (setq name item
4732 op 'off
4733 voice 'off))
4734 (when updatep
4735 (puthash (erc-downcase name) t
4736 erc-channel-new-member-names)
4737 (erc-update-current-channel-member
4738 name name t op voice)))))
4739 (run-hooks 'erc-channel-members-changed-hook)))
4741 (defcustom erc-channel-members-changed-hook nil
4742 "This hook is called every time the variable `channel-members' changes.
4743 The buffer where the change happened is current while this hook is called."
4744 :group 'erc-hooks
4745 :type 'hook)
4747 (defun erc-update-user-nick (nick &optional new-nick
4748 host login full-name info)
4749 "Update the stored user information for the user with nickname NICK.
4751 See also: `erc-update-user'."
4752 (erc-update-user (erc-get-server-user nick) new-nick
4753 host login full-name info))
4755 (defun erc-update-user (user &optional new-nick
4756 host login full-name info)
4757 "Update user info for USER. USER must be an erc-server-user
4758 struct. Any of NEW-NICK, HOST, LOGIN, FULL-NAME, INFO which are
4759 non-nil and not equal to the existing values for USER are used to
4760 replace the stored values in USER.
4762 If, and only if, a change is made,
4763 `erc-channel-members-changed-hook' is run for each channel for
4764 which USER is a member, and t is returned."
4765 (let (changed)
4766 (when user
4767 (when (and new-nick
4768 (not (equal (erc-server-user-nickname user)
4769 new-nick)))
4770 (setq changed t)
4771 (erc-change-user-nickname user new-nick))
4772 (when (and host
4773 (not (equal (erc-server-user-host user) host)))
4774 (setq changed t)
4775 (setf (erc-server-user-host user) host))
4776 (when (and login
4777 (not (equal (erc-server-user-login user) login)))
4778 (setq changed t)
4779 (setf (erc-server-user-login user) login))
4780 (when (and full-name
4781 (not (equal (erc-server-user-full-name user)
4782 full-name)))
4783 (setq changed t)
4784 (setf (erc-server-user-full-name user) full-name))
4785 (when (and info
4786 (not (equal (erc-server-user-info user) info)))
4787 (setq changed t)
4788 (setf (erc-server-user-info user) info))
4789 (if changed
4790 (dolist (buf (erc-server-user-buffers user))
4791 (if (buffer-live-p buf)
4792 (with-current-buffer buf
4793 (run-hooks 'erc-channel-members-changed-hook))))))
4794 changed))
4796 (defun erc-update-current-channel-member
4797 (nick new-nick &optional add op voice host login full-name info
4798 update-message-time)
4799 "Update the stored user information for the user with nickname NICK.
4800 `erc-update-user' is called to handle changes to nickname,
4801 HOST, LOGIN, FULL-NAME, and INFO. If OP or VOICE are non-nil,
4802 they must be equal to either `on' or `off', in which case the
4803 operator or voice status of the user in the current channel is
4804 changed accordingly. If UPDATE-MESSAGE-TIME is non-nil, the
4805 last-message-time of the user in the current channel is set
4806 to (current-time).
4808 If ADD is non-nil, the user will be added with the specified
4809 information if it is not already present in the user or channel
4810 lists.
4812 If, and only if, changes are made, or the user is added,
4813 `erc-channel-members-updated-hook' is run, and t is returned.
4815 See also: `erc-update-user' and `erc-update-channel-member'."
4816 (let* (changed user-changed
4817 (channel-data (erc-get-channel-user nick))
4818 (cuser (cdr channel-data))
4819 (user (if channel-data (car channel-data)
4820 (erc-get-server-user nick))))
4821 (if cuser
4822 (progn
4823 (erc-log (format "update-member: user = %S, cuser = %S" user cuser))
4824 (when (and op
4825 (not (eq (erc-channel-user-op cuser) op)))
4826 (setq changed t)
4827 (setf (erc-channel-user-op cuser)
4828 (cond ((eq op 'on) t)
4829 ((eq op 'off) nil)
4830 (t op))))
4831 (when (and voice
4832 (not (eq (erc-channel-user-voice cuser) voice)))
4833 (setq changed t)
4834 (setf (erc-channel-user-voice cuser)
4835 (cond ((eq voice 'on) t)
4836 ((eq voice 'off) nil)
4837 (t voice))))
4838 (when update-message-time
4839 (setf (erc-channel-user-last-message-time cuser) (current-time)))
4840 (setq user-changed
4841 (erc-update-user user new-nick
4842 host login full-name info)))
4843 (when add
4844 (if (null user)
4845 (progn
4846 (setq user (make-erc-server-user
4847 :nickname nick
4848 :host host
4849 :full-name full-name
4850 :login login
4851 :info info
4852 :buffers (list (current-buffer))))
4853 (erc-add-server-user nick user))
4854 (setf (erc-server-user-buffers user)
4855 (cons (current-buffer)
4856 (erc-server-user-buffers user))))
4857 (setq cuser (make-erc-channel-user
4858 :op (cond ((eq op 'on) t)
4859 ((eq op 'off) nil)
4860 (t op))
4861 :voice (cond ((eq voice 'on) t)
4862 ((eq voice 'off) nil)
4863 (t voice))
4864 :last-message-time
4865 (if update-message-time (current-time))))
4866 (puthash (erc-downcase nick) (cons user cuser)
4867 erc-channel-users)
4868 (setq changed t)))
4869 (when (and changed (null user-changed))
4870 (run-hooks 'erc-channel-members-changed-hook))
4871 (or changed user-changed add)))
4873 (defun erc-update-channel-member (channel nick new-nick
4874 &optional add op voice host login
4875 full-name info update-message-time)
4876 "Update user and channel information for the user with
4877 nickname NICK in channel CHANNEL.
4879 See also: `erc-update-current-channel-member'."
4880 (erc-with-buffer
4881 (channel)
4882 (erc-update-current-channel-member nick new-nick add op voice host
4883 login full-name info
4884 update-message-time)))
4886 (defun erc-remove-current-channel-member (nick)
4887 "Remove NICK from current channel membership list.
4888 Runs `erc-channel-members-changed-hook'."
4889 (let ((channel-data (erc-get-channel-user nick)))
4890 (when channel-data
4891 (erc-remove-channel-user nick)
4892 (run-hooks 'erc-channel-members-changed-hook))))
4894 (defun erc-remove-channel-member (channel nick)
4895 "Remove NICK from CHANNEL's membership list.
4897 See also `erc-remove-current-channel-member'."
4898 (erc-with-buffer
4899 (channel)
4900 (erc-remove-current-channel-member nick)))
4902 (defun erc-update-channel-topic (channel topic &optional modify)
4903 "Find a buffer for CHANNEL and set the TOPIC for it.
4905 If optional MODIFY is 'append or 'prepend, then append or prepend the
4906 TOPIC string to the current topic."
4907 (erc-with-buffer (channel)
4908 (cond ((eq modify 'append)
4909 (setq erc-channel-topic (concat erc-channel-topic topic)))
4910 ((eq modify 'prepend)
4911 (setq erc-channel-topic (concat topic erc-channel-topic)))
4912 (t (setq erc-channel-topic topic)))
4913 (erc-update-mode-line-buffer (current-buffer))))
4915 (defun erc-set-modes (tgt mode-string)
4916 "Set the modes for the TGT provided as MODE-STRING."
4917 (let* ((modes (erc-parse-modes mode-string))
4918 (add-modes (nth 0 modes))
4919 ;; list of triples: (mode-char 'on/'off argument)
4920 (arg-modes (nth 2 modes)))
4921 (cond ((erc-channel-p tgt); channel modes
4922 (let ((buf (and erc-server-process
4923 (erc-get-buffer tgt erc-server-process))))
4924 (when buf
4925 (with-current-buffer buf
4926 (setq erc-channel-modes add-modes)
4927 (setq erc-channel-user-limit nil)
4928 (setq erc-channel-key nil)
4929 (while arg-modes
4930 (let ((mode (nth 0 (car arg-modes)))
4931 (onoff (nth 1 (car arg-modes)))
4932 (arg (nth 2 (car arg-modes))))
4933 (cond ((string-match "^[Ll]" mode)
4934 (erc-update-channel-limit tgt onoff arg))
4935 ((string-match "^[Kk]" mode)
4936 (erc-update-channel-key tgt onoff arg))
4937 (t nil)))
4938 (setq arg-modes (cdr arg-modes)))
4939 (erc-update-mode-line-buffer buf)))))
4940 ;; we do not keep our nick's modes yet
4941 ;;(t (setq erc-user-modes add-modes))
4942 )
4943 ))
4945 (defun erc-sort-strings (list-of-strings)
4946 "Sort LIST-OF-STRINGS in lexicographic order.
4948 Side-effect free."
4949 (sort (copy-sequence list-of-strings) 'string<))
4951 (defun erc-parse-modes (mode-string)
4952 "Parse MODE-STRING into a list.
4954 Returns a list of three elements:
4956 (ADD-MODES REMOVE-MODES ARG-MODES).
4958 The add-modes and remove-modes are lists of single-character strings
4959 for modes without parameters to add and remove respectively. The
4960 arg-modes is a list of triples of the form:
4962 (MODE-CHAR ON/OFF ARGUMENT)."
4964 (let ((chars (mapcar 'char-to-string (match-string 1 mode-string)))
4965 ;; arguments in channel modes
4966 (args-str (match-string 2 mode-string))
4967 (args nil)
4968 (add-modes nil)
4969 (remove-modes nil)
4970 (arg-modes nil); list of triples: (mode-char 'on/'off argument)
4971 (add-p t))
4972 ;; make the argument list
4974 (setq args (cons (match-string 1 args-str) args))
4975 (setq args-str (match-string 2 args-str)))
4976 (setq args (nreverse args))
4977 ;; collect what modes changed, and match them with arguments
4978 (while chars
4979 (cond ((string= (car chars) "+") (setq add-p t))
4980 ((string= (car chars) "-") (setq add-p nil))
4981 ((string-match "^[ovbOVB]" (car chars))
4982 (setq arg-modes (cons (list (car chars)
4983 (if add-p 'on 'off)
4984 (if args (car args) nil))
4985 arg-modes))
4986 (if args (setq args (cdr args))))
4987 ((string-match "^[LlKk]" (car chars))
4988 (setq arg-modes (cons (list (car chars)
4989 (if add-p 'on 'off)
4990 (if (and add-p args)
4991 (car args) nil))
4992 arg-modes))
4993 (if (and add-p args) (setq args (cdr args))))
4994 (add-p (setq add-modes (cons (car chars) add-modes)))
4995 (t (setq remove-modes (cons (car chars) remove-modes))))
4996 (setq chars (cdr chars)))
4997 (setq add-modes (nreverse add-modes))
4998 (setq remove-modes (nreverse remove-modes))
4999 (setq arg-modes (nreverse arg-modes))
5000 (list add-modes remove-modes arg-modes))
5001 nil))
5003 (defun erc-update-modes (tgt mode-string &optional nick host login)
5004 "Update the mode information for TGT, provided as MODE-STRING.
5005 Optional arguments: NICK, HOST and LOGIN - the attributes of the
5006 person who changed the modes."
5007 ;; FIXME: neither of nick, host, and login are used!
5008 (let* ((modes (erc-parse-modes mode-string))
5009 (add-modes (nth 0 modes))
5010 (remove-modes (nth 1 modes))
5011 ;; list of triples: (mode-char 'on/'off argument)
5012 (arg-modes (nth 2 modes)))
5013 ;; now parse the modes changes and do the updates
5014 (cond ((erc-channel-p tgt); channel modes
5015 (let ((buf (and erc-server-process
5016 (erc-get-buffer tgt erc-server-process))))
5017 (when buf
5018 ;; FIXME! This used to have an original buffer
5019 ;; variable, but it never switched back to the original
5020 ;; buffer. Is this wanted behavior?
5021 (set-buffer buf)
5022 (if (not (boundp 'erc-channel-modes))
5023 (setq erc-channel-modes nil))
5024 (while remove-modes
5025 (setq erc-channel-modes (delete (car remove-modes)
5026 erc-channel-modes)
5027 remove-modes (cdr remove-modes)))
5028 (while add-modes
5029 (setq erc-channel-modes (cons (car add-modes)
5030 erc-channel-modes)
5031 add-modes (cdr add-modes)))
5032 (setq erc-channel-modes (erc-sort-strings erc-channel-modes))
5033 (while arg-modes
5034 (let ((mode (nth 0 (car arg-modes)))
5035 (onoff (nth 1 (car arg-modes)))
5036 (arg (nth 2 (car arg-modes))))
5037 (cond ((string-match "^[oO]" mode)
5038 (erc-update-channel-member tgt arg arg nil onoff))
5039 ((string-match "^[Vv]" mode)
5040 (erc-update-channel-member tgt arg arg nil nil
5041 onoff))
5042 ((string-match "^[Ll]" mode)
5043 (erc-update-channel-limit tgt onoff arg))
5044 ((string-match "^[Kk]" mode)
5045 (erc-update-channel-key tgt onoff arg))
5046 (t nil)); only ops are tracked now
5047 (setq arg-modes (cdr arg-modes))))
5048 (erc-update-mode-line buf))))
5049 ;; nick modes - ignored at this point
5050 (t nil))))
5052 (defun erc-update-channel-limit (channel onoff n)
5053 ;; FIXME: what does ONOFF actually do? -- Lawrence 2004-01-08
5054 "Update CHANNEL's user limit to N."
5055 (if (or (not (eq onoff 'on))
5056 (and (stringp n) (string-match "^[0-9]+$" n)))
5057 (erc-with-buffer
5058 (channel)
5059 (cond ((eq onoff 'on) (setq erc-channel-user-limit (string-to-number n)))
5060 (t (setq erc-channel-user-limit nil))))))
5062 (defun erc-update-channel-key (channel onoff key)
5063 "Update CHANNEL's key to KEY if ONOFF is 'on or to nil if it's 'off."
5064 (erc-with-buffer
5065 (channel)
5066 (cond ((eq onoff 'on) (setq erc-channel-key key))
5067 (t (setq erc-channel-key nil)))))
5069 (defun erc-handle-user-status-change (type nlh &optional l)
5070 "Handle changes in any user's status.
5072 So far, only nick change is handled.
5074 Generally, the TYPE argument is a symbol describing the change type, NLH is
5075 a list containing the original nickname, login name and hostname for the user,
5076 and L is a list containing additional TYPE-specific arguments.
5078 So far the following TYPE/L pairs are supported:
5080 Event TYPE L
5082 nickname change 'nick (NEW-NICK)"
5083 (erc-log (format "user-change: type: %S nlh: %S l: %S" type nlh l))
5084 (cond
5085 ;; nickname change
5086 ((equal type 'nick)
5087 t)
5088 (t
5089 nil)))
5091 (defun erc-highlight-notice (s)
5092 "Highlight notice message S and return it.
5093 See also variable `erc-notice-highlight-type'."
5094 (cond
5095 ((eq erc-notice-highlight-type 'prefix)
5096 (erc-put-text-property 0 (length erc-notice-prefix)
5097 'face 'erc-notice-face s)
5098 s)
5099 ((eq erc-notice-highlight-type 'all)
5100 (erc-put-text-property 0 (length s) 'face 'erc-notice-face s)
5101 s)
5102 (t s)))
5104 (defun erc-make-notice (message)
5105 "Notify the user of MESSAGE."
5106 (when erc-minibuffer-notice
5107 (message "%s" message))
5108 (erc-highlight-notice (concat erc-notice-prefix message)))
5110 (defun erc-highlight-error (s)
5111 "Highlight error message S and return it."
5112 (erc-put-text-property 0 (length s) 'face 'erc-error-face s)
5113 s)
5115 (defun erc-put-text-property (start end property value &optional object)
5116 "Set text-property for an object (usually a string).
5117 START and END define the characters covered.
5118 PROPERTY is the text-property set, usually the symbol `face'.
5119 VALUE is the value for the text-property, usually a face symbol such as
5120 the face `bold' or `erc-pal-face'.
5121 OBJECT is a string which will be modified and returned.
5122 OBJECT is modified without being copied first.
5124 You can redefine or `defadvice' this function in order to add
5125 EmacsSpeak support."
5126 (put-text-property start end property value object))
5128 (defun erc-list (thing)
5129 "Return THING if THING is a list, or a list with THING as its element."
5130 (if (listp thing)
5131 thing
5132 (list thing)))
5134 (defun erc-parse-user (string)
5135 "Parse STRING as a user specification (nick!login@host).
5137 Return a list of the three separate tokens."
5138 (cond
5140 (list (match-string 1 string)
5141 (match-string 2 string)
5142 (match-string 3 string)))
5143 ;; Some bogus bouncers send Nick!(null), try to live with that.
5145 (list (match-string 1 string)
5146 ""
5147 (match-string 2 string)))
5148 (t
5149 (list string "" ""))))
5151 (defun erc-extract-nick (string)
5152 "Return the nick corresponding to a user specification STRING.
5154 See also `erc-parse-user'."
5155 (car (erc-parse-user string)))
5157 (defun erc-put-text-properties (start end properties
5158 &optional object value-list)
5159 "Set text-properties for OBJECT.
5161 START and END describe positions in OBJECT.
5162 If VALUE-LIST is nil, set each property in PROPERTIES to t, else set
5163 each property to the corresponding value in VALUE-LIST."
5164 (unless value-list
5165 (setq value-list (mapcar (lambda (_x) t)
5166 properties)))
5167 (while (and properties value-list)
5168 (erc-put-text-property
5169 start end (pop properties) (pop value-list) object)))
5171 ;;; Input area handling:
5173 (defun erc-beg-of-input-line ()
5174 "Return the value of `point' at the beginning of the input line.
5176 Specifically, return the position of `erc-insert-marker'."
5177 (or (and (boundp 'erc-insert-marker)
5178 (markerp erc-insert-marker))
5179 (error "erc-insert-marker has no value, please report a bug"))
5180 (marker-position erc-insert-marker))
5182 (defun erc-end-of-input-line ()
5183 "Return the value of `point' at the end of the input line."
5184 (point-max))
5186 (defvar erc-last-input-time 0
5187 "Time of last call to `erc-send-current-line'.
5188 If that function has never been called, the value is 0.")
5190 (defcustom erc-accidental-paste-threshold-seconds nil
5191 "Minimum time, in seconds, before sending new lines via IRC.
5192 If the value is a number, `erc-send-current-line' signals an
5193 error if its previous invocation was less than this much time
5194 ago. This is useful so that if you accidentally enter large
5195 amounts of text into the ERC buffer, that text is not sent to the
5196 IRC server.
5198 If the value is nil, `erc-send-current-line' always considers any
5199 submitted line to be intentional."
5200 :group 'erc
5201 :version "24.4"
5202 :type '(choice number (other :tag "disabled" nil)))
5204 (defun erc-send-current-line ()
5205 "Parse current line and send it to IRC."
5206 (interactive)
5207 (let ((now (float-time)))
5208 (if (or (not erc-accidental-paste-threshold-seconds)
5209 (< erc-accidental-paste-threshold-seconds
5210 (- now erc-last-input-time)))
5211 (save-restriction
5212 (widen)
5213 (if (< (point) (erc-beg-of-input-line))
5214 (erc-error "Point is not in the input area")
5215 (let ((inhibit-read-only t)
5216 (str (erc-user-input))
5217 (old-buf (current-buffer)))
5218 (if (and (not (erc-server-buffer-live-p))
5219 (not (erc-command-no-process-p str)))
5220 (erc-error "ERC: No process running")
5221 (erc-set-active-buffer (current-buffer))
5222 ;; Kill the input and the prompt
5223 (delete-region (erc-beg-of-input-line)
5224 (erc-end-of-input-line))
5225 (unwind-protect
5226 (erc-send-input str)
5227 ;; Fix the buffer if the command didn't kill it
5228 (when (buffer-live-p old-buf)
5229 (with-current-buffer old-buf
5230 (save-restriction
5231 (widen)
5232 (goto-char (point-max))
5233 (when (processp erc-server-process)
5234 (set-marker (process-mark erc-server-process) (point)))
5235 (set-marker erc-insert-marker (point))
5236 (let ((buffer-modified (buffer-modified-p)))
5237 (erc-display-prompt)
5238 (set-buffer-modified-p buffer-modified))))))
5240 ;; Only when last hook has been run...
5241 (run-hook-with-args 'erc-send-completed-hook str))))
5242 (setq erc-last-input-time now))
5243 (switch-to-buffer "*ERC Accidental Paste Overflow*")
5244 (lwarn 'erc :warning
5245 "You seem to have accidentally pasted some text!"))))
5247 (defun erc-user-input ()
5248 "Return the input of the user in the current buffer."
5249 (buffer-substring-no-properties
5250 erc-input-marker
5251 (erc-end-of-input-line)))
5254 "Regular expression used for matching commands in ERC.")
5256 (defun erc-send-input (input)
5257 "Treat INPUT as typed in by the user. It is assumed that the input
5258 and the prompt is already deleted.
5259 This returns non-nil only if we actually send anything."
5260 ;; Handle different kinds of inputs
5261 (cond
5262 ;; Ignore empty input
5263 ((if erc-send-whitespace-lines
5264 (string= input "")
5266 (when erc-warn-about-blank-lines
5267 (message "Blank line - ignoring...")
5268 (beep))
5269 nil)
5270 (t
5271 (let ((str input)
5272 (erc-insert-this t))
5273 (setq erc-send-this t)
5274 (run-hook-with-args 'erc-send-pre-hook input)
5275 (when erc-send-this
5277 (not (string-match erc-command-regexp str)))
5278 (mapc
5279 (lambda (line)
5280 (mapc
5281 (lambda (line)
5282 ;; Insert what has to be inserted for this.
5283 (erc-display-msg line)
5285 (null erc-flood-protect) t))
5286 (or (and erc-flood-protect (erc-split-line line))
5287 (list line))))
5289 ;; Insert the prompt along with the command.
5290 (erc-display-command str)
5292 t)))))
5294 (defun erc-display-command (line)
5295 (when erc-insert-this
5296 (let ((insert-position (point)))
5297 (unless erc-hide-prompt
5298 (erc-display-prompt nil nil (erc-command-indicator)
5299 (and (erc-command-indicator)
5300 'erc-command-indicator-face)))
5301 (let ((beg (point)))
5302 (insert line)
5303 (erc-put-text-property beg (point)
5304 'face 'erc-command-indicator-face)
5306 (when (processp erc-server-process)
5307 (set-marker (process-mark erc-server-process) (point)))
5308 (set-marker erc-insert-marker (point))
5309 (save-excursion
5310 (save-restriction
5311 (narrow-to-region insert-position (point))
5312 (run-hooks 'erc-send-modify-hook)
5313 (run-hooks 'erc-send-post-hook))))))
5315 (defun erc-display-msg (line)
5316 "Display LINE as a message of the user to the current target at the
5317 current position."
5318 (when erc-insert-this
5319 (let ((insert-position (point)))
5320 (insert (erc-format-my-nick))
5321 (let ((beg (point)))
5322 (insert line)
5323 (erc-put-text-property beg (point)
5324 'face 'erc-input-face))
5326 (when (processp erc-server-process)
5327 (set-marker (process-mark erc-server-process) (point)))
5328 (set-marker erc-insert-marker (point))
5329 (save-excursion
5330 (save-restriction
5331 (narrow-to-region insert-position (point))
5332 (run-hooks 'erc-send-modify-hook)
5333 (run-hooks 'erc-send-post-hook))))))
5335 (defun erc-command-symbol (command)
5336 "Return the ERC command symbol for COMMAND if it exists and is bound."
5337 (let ((cmd (intern-soft (format "erc-cmd-%s" (upcase command)))))
5338 (when (fboundp cmd) cmd)))
5340 (defun erc-extract-command-from-line (line)
5341 "Extract command and args from the input LINE.
5342 If no command was given, return nil. If command matches, return a
5343 list of the form: (command args) where both elements are strings."
5344 (when (string-match erc-command-regexp line)
5345 (let* ((cmd (erc-command-symbol (match-string 1 line)))
5346 ;; note: return is nil, we apply this simply for side effects
5347 (_canon-defun (while (and cmd (symbolp (symbol-function cmd)))
5348 (setq cmd (symbol-function cmd))))
5349 (cmd-fun (or cmd #'erc-cmd-default))
5350 (arg (if cmd
5351 (if (get cmd-fun 'do-not-parse-args)
5352 (format "%s" (match-string 2 line))
5353 (delete "" (split-string (erc-trim-string
5354 (match-string 2 line)) " ")))
5355 line)))
5356 (list cmd-fun arg))))
5358 (defun erc-split-multiline-safe (string)
5359 "Split STRING, containing multiple lines and return them in a list.
5360 Do it only for STRING as the complete input, do not carry unfinished
5361 strings over to the next call."
5362 (let ((l ())
5363 (i0 0)
5364 (doit t))
5365 (while doit
5367 (s (substring string i0)))
5368 (cond (i (setq l (cons (substring string i0 i) l))
5369 (setq i0 (match-end 0)))
5370 ((> (length s) 0)
5371 (setq l (cons s l))(setq doit nil))
5372 (t (setq doit nil)))))
5373 (nreverse l)))
5375 ;; nick handling
5377 (defun erc-set-current-nick (nick)
5378 "Set the current nickname to NICK."
5379 (with-current-buffer (if (buffer-live-p (erc-server-buffer))
5380 (erc-server-buffer)
5381 (current-buffer))
5382 (setq erc-server-current-nick nick)))
5384 (defun erc-current-nick ()
5385 "Return the current nickname."
5386 (with-current-buffer (if (buffer-live-p (erc-server-buffer))
5387 (erc-server-buffer)
5388 (current-buffer))
5389 erc-server-current-nick))
5391 (defun erc-current-nick-p (nick)
5392 "Return non-nil if NICK is the current nickname."
5393 (erc-nick-equal-p nick (erc-current-nick)))
5395 (defun erc-nick-equal-p (nick1 nick2)
5396 "Return non-nil if NICK1 and NICK2 are the same.
5398 This matches strings according to the IRC protocol's case convention.
5400 See also `erc-downcase'."
5401 (string= (erc-downcase nick1)
5402 (erc-downcase nick2)))
5404 ;; default target handling
5406 (defun erc-default-target ()
5407 "Return the current default target (as a character string) or nil if none."
5408 (let ((tgt (car erc-default-recipients)))
5409 (cond
5410 ((not tgt) nil)
5411 ((listp tgt) (cdr tgt))
5412 (t tgt))))
5414 (defun erc-add-default-channel (channel)
5415 "Add CHANNEL to the default channel list."
5416 (let ((chl (downcase channel)))
5417 (setq erc-default-recipients
5418 (cons chl erc-default-recipients))))
5420 (defun erc-delete-default-channel (channel &optional buffer)
5421 "Delete CHANNEL from the default channel list."
5422 (with-current-buffer (if (and buffer
5423 (bufferp buffer))
5424 buffer
5425 (current-buffer))
5426 (setq erc-default-recipients (delete (downcase channel)
5427 erc-default-recipients))))
5429 (defun erc-add-query (nickname)
5430 "Add QUERY'd NICKNAME to the default channel list.
5432 The previous default target of QUERY type gets removed."
5433 (let ((d1 (car erc-default-recipients))
5434 (d2 (cdr erc-default-recipients))
5435 (qt (cons 'QUERY (downcase nickname))))
5436 (setq erc-default-recipients (cons qt (if (and (listp d1)
5437 (eq (car d1) 'QUERY))
5438 d2
5439 erc-default-recipients)))))
5441 (defun erc-delete-query ()
5442 "Delete the topmost target if it is a QUERY."
5444 (let ((d1 (car erc-default-recipients))
5445 (d2 (cdr erc-default-recipients)))
5446 (if (and (listp d1)
5447 (eq (car d1) 'QUERY))
5448 (setq erc-default-recipients d2)
5449 (error "Current target is not a QUERY"))))
5451 (defun erc-ignored-user-p (spec)
5452 "Return non-nil if SPEC matches something in `erc-ignore-list'.
5455 matches against all the regexp's in `erc-ignore-list'. If any
5456 match, returns that regexp."
5457 (catch 'found
5458 (dolist (ignored (erc-with-server-buffer erc-ignore-list))
5459 (if (string-match ignored spec)
5460 (throw 'found ignored)))))
5462 (defun erc-ignored-reply-p (msg tgt proc)
5463 ;; FIXME: this docstring needs fixing -- Lawrence 2004-01-08
5464 "Return non-nil if MSG matches something in `erc-ignore-reply-list'.
5466 Takes a message MSG to a channel and returns non-nil if the addressed
5467 user matches any regexp in `erc-ignore-reply-list'."
5468 (let ((target-nick (erc-message-target msg)))
5469 (if (not target-nick)
5470 nil
5471 (erc-with-buffer (tgt proc)
5472 (let ((user (erc-get-server-user target-nick)))
5473 (when user
5474 (erc-list-match erc-ignore-reply-list
5475 (erc-user-spec user))))))))
5477 (defun erc-message-target (msg)
5478 "Return the addressed target in MSG.
5480 The addressed target is the string before the first colon in MSG."
5482 (match-string 1 msg)
5483 nil))
5485 (defun erc-user-spec (user)
5486 "Create a nick!user@host spec from a user struct."
5487 (let ((nick (erc-server-user-nickname user))
5488 (host (erc-server-user-host user))
5489 (login (erc-server-user-login user)))
5490 (concat (or nick "")
5491 "!"
5492 (or login "")
5493 "@"
5494 (or host ""))))
5496 (defun erc-list-match (lst str)
5497 "Return non-nil if any regexp in LST matches STR."
5498 (memq nil (mapcar (lambda (regexp)
5499 (not (string-match regexp str)))
5500 lst)))
5502 ;; other "toggles"
5504 (defun erc-toggle-ctcp-autoresponse (&optional arg)
5505 "Toggle automatic CTCP replies (like VERSION and PING).
5507 If ARG is positive, turns CTCP replies on.
5509 If ARG is non-nil and not positive, turns CTCP replies off."
5510 (interactive "P")
5511 (cond ((and (numberp arg) (> arg 0))
5512 (setq erc-disable-ctcp-replies t))
5513 (arg (setq erc-disable-ctcp-replies nil))
5514 (t (setq erc-disable-ctcp-replies (not erc-disable-ctcp-replies))))
5515 (message "ERC CTCP replies are %s" (if erc-disable-ctcp-replies "OFF" "ON")))
5517 (defun erc-toggle-flood-control (&optional arg)
5518 "Toggle use of flood control on sent messages.
5520 If ARG is positive, use flood control.
5521 If ARG is non-nil and not positive, do not use flood control.
5523 See `erc-server-flood-margin' for an explanation of the available
5524 flood control parameters."
5525 (interactive "P")
5526 (cond ((and (numberp arg) (> arg 0))
5527 (setq erc-flood-protect t))
5528 (arg (setq erc-flood-protect nil))
5529 (t (setq erc-flood-protect (not erc-flood-protect))))
5530 (message "ERC flood control is %s"
5531 (cond (erc-flood-protect "ON")
5532 (t "OFF"))))
5534 ;; Some useful channel and nick commands for fast key bindings
5536 (defun erc-invite-only-mode (&optional arg)
5537 "Turn on the invite only mode (+i) for the current channel.
5539 If ARG is non-nil, turn this mode off (-i).
5541 This command is sent even if excess flood is detected."
5542 (interactive "P")
5543 (erc-set-active-buffer (current-buffer))
5544 (let ((tgt (erc-default-target)))
5545 (cond ((or (not tgt) (not (erc-channel-p tgt)))
5546 (erc-display-message nil 'error (current-buffer) 'no-target))
5547 (arg (erc-load-irc-script-lines (list (concat "/mode " tgt " -i"))
5548 t))
5549 (t (erc-load-irc-script-lines (list (concat "/mode " tgt " +i"))
5550 t)))))
5552 (defun erc-get-channel-mode-from-keypress (key)
5553 "Read a key sequence and call the corresponding channel mode function.
5554 After doing C-c C-o, type in a channel mode letter.
5556 C-g means quit.
5557 RET lets you type more than one mode at a time.
5560 Anything else will be sent to `erc-toggle-channel-mode'."
5561 (interactive "kChannel mode (RET to set more than one): ")
5562 (when (featurep 'xemacs)
5563 (setq key (char-to-string (event-to-character (aref key 0)))))
5564 (cond ((equal key "\C-g")
5565 (keyboard-quit))
5566 ((equal key "\C-m")
5567 (erc-insert-mode-command))
5568 ((equal key "l")
5569 (call-interactively 'erc-set-channel-limit))
5570 ((equal key "k")
5571 (call-interactively 'erc-set-channel-key))
5572 (t (erc-toggle-channel-mode key))))
5574 (defun erc-toggle-channel-mode (mode &optional channel)
5575 "Toggle channel MODE.
5577 If CHANNEL is non-nil, toggle MODE for that channel, otherwise use
5578 `erc-default-target'."
5579 (interactive "P")
5580 (erc-set-active-buffer (current-buffer))
5581 (let ((tgt (or channel (erc-default-target))))
5582 (cond ((or (null tgt) (null (erc-channel-p tgt)))
5583 (erc-display-message nil 'error 'active 'no-target))
5584 ((member mode erc-channel-modes)
5585 (erc-log (format "%s: Toggle mode %s OFF" tgt mode))
5586 (message "Toggle channel mode %s OFF" mode)
5587 (erc-server-send (format "MODE %s -%s" tgt mode)))
5588 (t (erc-log (format "%s: Toggle channel mode %s ON" tgt mode))
5589 (message "Toggle channel mode %s ON" mode)
5590 (erc-server-send (format "MODE %s +%s" tgt mode))))))
5592 (defun erc-insert-mode-command ()
5594 (interactive)
5595 (let ((tgt (erc-default-target)))
5596 (if tgt (insert (concat "/mode " tgt " "))
5597 (erc-display-message nil 'error (current-buffer) 'no-target))))
5599 (defun erc-channel-names ()
5601 (interactive)
5602 (erc-set-active-buffer (current-buffer))
5603 (let ((tgt (erc-default-target)))
5604 (if tgt (erc-load-irc-script-lines (list (concat "/names " tgt)))
5605 (erc-display-message nil 'error (current-buffer) 'no-target))))
5607 (defun erc-remove-text-properties-region (start end &optional object)
5608 "Clears the region (START,END) in OBJECT from all colors, etc."
5609 (interactive "r")
5610 (save-excursion
5611 (let ((inhibit-read-only t))
5612 (set-text-properties start end nil object))))
5613 (put 'erc-remove-text-properties-region 'disabled t)
5615 ;; script execution and startup
5617 (defun erc-find-file (file &optional path)
5618 "Search for a FILE in the filesystem.
5619 First the `default-directory' is searched for FILE, then any directories
5620 specified in the list PATH.
5622 If FILE is found, return the path to it."
5623 (let ((filepath file))
5624 (if (file-readable-p filepath) filepath
5625 (while (and path
5626 (progn (setq filepath (expand-file-name file (car path)))
5627 (not (file-readable-p filepath))))
5628 (setq path (cdr path)))
5629 (if path filepath nil))))
5631 (defun erc-select-startup-file ()
5632 "Select an ERC startup file.
5633 See also `erc-startup-file-list'."
5634 (catch 'found
5635 (dolist (f erc-startup-file-list)
5636 (setq f (convert-standard-filename f))
5637 (when (file-readable-p f)
5638 (throw 'found f)))))
5640 (defun erc-find-script-file (file)
5641 "Search for FILE in `default-directory', and any in `erc-script-path'."
5642 (erc-find-file file erc-script-path))
5644 (defun erc-load-script (file)
5645 "Load a script from FILE.
5647 FILE must be the full name, it is not searched in the
5648 `erc-script-path'. If the filename ends with `.el', then load it
5649 as an Emacs Lisp program. Otherwise, treat it as a regular IRC
5650 script."
5651 (erc-log (concat "erc-load-script: " file))
5652 (cond
5654 (load file))
5655 (t
5656 (erc-load-irc-script file))))
5658 (defun erc-process-script-line (line &optional args)
5659 "Process an IRC script LINE.
5661 Does script-specific substitutions (script arguments, current nick,
5662 server, etc.) in LINE and returns it.
5664 Substitutions are: %C and %c = current target (channel or nick),
5665 %S %s = current server, %N %n = my current nick, and %x is x verbatim,
5666 where x is any other character;
5667 $* = the entire argument string, $1 = the first argument, $2 = the second,
5668 and so on."
5669 (if (not args) (setq args ""))
5673 (tgt (erc-default-target))
5674 (server (and (boundp 'erc-session-server) erc-session-server))
5675 (nick (erc-current-nick))
5676 (res "")
5677 (tmp nil)
5678 (arg-list nil)
5679 (arg-num 0))
5680 (if (not tgt) (setq tgt ""))
5681 (if (not server) (setq server ""))
5682 (if (not nick) (setq nick ""))
5683 ;; First, compute the argument list
5684 (setq tmp args)
5686 (setq arg-list (cons (match-string 1 tmp) arg-list))
5687 (setq tmp (match-string 2 tmp)))
5688 (setq arg-list (nreverse arg-list))
5689 (setq arg-num (length arg-list))
5690 ;; now do the substitution
5691 (setq tmp (string-match esc-regexp line))
5692 (while tmp
5693 ;;(message "beginning of while: tmp=%S" tmp)
5694 (let* ((hd (substring line 0 tmp))
5695 (esc "")
5696 (subst "")
5697 (tail (substring line tmp)))
5698 (cond ((string-match (concat "^" arg-esc-regexp) tail)
5699 (setq esc (match-string 1 tail))
5700 (setq tail (substring tail (match-end 1))))
5701 ((string-match (concat "^" percent-regexp) tail)
5702 (setq esc (match-string 1 tail))
5703 (setq tail (substring tail (match-end 1)))))
5704 ;;(message "hd=%S, esc=%S, tail=%S, arg-num=%S" hd esc tail arg-num)
5705 (setq res (concat res hd))
5706 (setq subst
5707 (cond ((string= esc "") "")
5710 (let ((n (string-to-number (match-string 1 esc))))
5711 (message "n = %S, integerp(n)=%S" n (integerp n))
5712 (if (<= n arg-num) (nth (1- n) arg-list) "")))
5713 ((string-match "^%[Cc]$" esc) tgt)
5714 ((string-match "^%[Ss]$" esc) server)
5715 ((string-match "^%[Nn]$" esc) nick)
5718 (message "BUG IN ERC: esc=%S" esc)
5719 "")))
5720 (setq line tail)
5721 (setq tmp (string-match esc-regexp line))
5722 (setq res (concat res subst))
5723 ;;(message "end of while: line=%S, res=%S, tmp=%S" line res tmp)
5724 ))
5725 (setq res (concat res line))
5726 res))
5728 (defun erc-load-irc-script (file &optional force)
5729 "Load an IRC script from FILE."
5730 (erc-log (concat "erc-load-script: " file))
5731 (let ((str (with-temp-buffer
5732 (insert-file-contents file)
5733 (buffer-string))))
5734 (erc-load-irc-script-lines (erc-split-multiline-safe str) force)))
5736 (defun erc-load-irc-script-lines (lines &optional force noexpand)
5737 "Load IRC script LINES (a list of strings).
5739 If optional NOEXPAND is non-nil, do not expand script-specific
5740 sequences, process the lines verbatim. Use this for multiline
5741 user input."
5742 (let* ((cb (current-buffer))
5743 (s "")
5744 (sp (or (erc-command-indicator) (erc-prompt)))
5745 (args (and (boundp 'erc-script-args) erc-script-args)))
5746 (if (and args (string-match "^ " args))
5747 (setq args (substring args 1)))
5748 ;; prepare the prompt string for echo
5749 (erc-put-text-property 0 (length sp)
5750 'face 'erc-command-indicator-face sp)
5751 (while lines
5752 (setq s (car lines))
5753 (erc-log (concat "erc-load-script: CMD: " s))
5755 (let ((line (if noexpand s (erc-process-script-line s args))))
5756 (if (and (erc-process-input-line line force)
5757 erc-script-echo)
5758 (progn
5759 (erc-put-text-property 0 (length line)
5760 'face 'erc-input-face line)
5761 (erc-display-line (concat sp line) cb)))))
5762 (setq lines (cdr lines)))))
5764 ;; authentication
5766 (defun erc-login ()
5767 "Perform user authentication at the IRC server."
5768 (erc-log (format "login: nick: %s, user: %s %s %s :%s"
5769 (erc-current-nick)
5770 (user-login-name)
5771 (or erc-system-name (system-name))
5772 erc-session-server
5773 erc-session-user-full-name))
5774 (if erc-session-password
5775 (erc-server-send (format "PASS %s" erc-session-password))
5776 (message "Logging in without password"))
5777 (erc-server-send (format "NICK %s" (erc-current-nick)))
5778 (erc-server-send
5779 (format "USER %s %s %s :%s"
5780 ;; hacked - S.B.
5781 (if erc-anonymous-login erc-email-userid (user-login-name))
5782 "0" "*"
5783 erc-session-user-full-name))
5784 (erc-update-mode-line))
5786 ;; connection properties' heuristics
5788 (defun erc-determine-parameters (&optional server port nick name)
5789 "Determine the connection and authentication parameters.
5790 Sets the buffer local variables:
5792 - `erc-session-connector'
5793 - `erc-session-server'
5794 - `erc-session-port'
5795 - `erc-session-full-name'
5796 - `erc-server-current-nick'"
5797 (setq erc-session-connector erc-server-connect-function
5798 erc-session-server (erc-compute-server server)
5799 erc-session-port (or port erc-default-port)
5800 erc-session-user-full-name (erc-compute-full-name name))
5801 (erc-set-current-nick (erc-compute-nick nick)))
5803 (defun erc-compute-server (&optional server)
5804 "Return an IRC server name.
5806 This tries a number of increasingly more default methods until a
5807 non-nil value is found.
5809 - SERVER (the argument passed to this function)
5810 - The `erc-server' option
5811 - The value of the IRCSERVER environment variable
5812 - The `erc-default-server' variable"
5813 (or server
5814 erc-server
5815 (getenv "IRCSERVER")
5816 erc-default-server))
5818 (defun erc-compute-nick (&optional nick)
5819 "Return user's IRC nick.
5821 This tries a number of increasingly more default methods until a
5822 non-nil value is found.
5824 - NICK (the argument passed to this function)
5825 - The `erc-nick' option
5826 - The value of the IRCNICK environment variable
5827 - The result from the `user-login-name' function"
5828 (or nick
5829 (if (consp erc-nick) (car erc-nick) erc-nick)
5830 (getenv "IRCNICK")
5831 (user-login-name)))
5834 (defun erc-compute-full-name (&optional full-name)
5835 "Return user's full name.
5837 This tries a number of increasingly more default methods until a
5838 non-nil value is found.
5840 - FULL-NAME (the argument passed to this function)
5841 - The `erc-user-full-name' option
5842 - The value of the IRCNAME environment variable
5843 - The result from the `user-full-name' function"
5844 (or full-name
5845 erc-user-full-name
5846 (getenv "IRCNAME")
5847 (if erc-anonymous-login "unknown" nil)
5848 (user-full-name)))
5850 (defun erc-compute-port (&optional port)
5851 "Return a port for an IRC server.
5853 This tries a number of increasingly more default methods until a
5854 non-nil value is found.
5856 - PORT (the argument passed to this function)
5857 - The `erc-port' option
5858 - The `erc-default-port' variable"
5859 (or port erc-port erc-default-port))
5861 ;; time routines
5863 (defun erc-string-to-emacs-time (string)
5864 "Convert the long number represented by STRING into an Emacs format.
5865 Returns a list of the form (HIGH LOW), compatible with Emacs time format."
5866 (let* ((n (string-to-number (concat string ".0"))))
5867 (list (truncate (/ n 65536))
5868 (truncate (mod n 65536)))))
5870 (defun erc-emacs-time-to-erc-time (time)
5871 "Convert Emacs TIME to a number of seconds since the epoch."
5872 (when time
5873 (+ (* (nth 0 time) 65536.0) (nth 1 time))))
5874 ; (round (+ (* (nth 0 tm) 65536.0) (nth 1 tm))))
5876 (defun erc-current-time ()
5877 "Return the `current-time' as a number of seconds since the epoch.
5879 See also `erc-emacs-time-to-erc-time'."
5880 (erc-emacs-time-to-erc-time (current-time)))
5882 (defun erc-time-diff (t1 t2)
5883 "Return the time difference in seconds between T1 and T2."
5884 (abs (- t2 t1)))
5886 (defun erc-time-gt (t1 t2)
5887 "Check whether T1 > T2."
5888 (> t1 t2))
5890 (defun erc-sec-to-time (ns)
5891 "Convert NS to a time string HH:MM.SS."
5892 (setq ns (truncate ns))
5893 (format "%02d:%02d.%02d"
5894 (/ ns 3600)
5895 (/ (% ns 3600) 60)
5896 (% ns 60)))
5898 (defun erc-seconds-to-string (seconds)
5899 "Convert a number of SECONDS into an English phrase."
5900 (let (days hours minutes format-args output)
5901 (setq days (/ seconds 86400)
5902 seconds (% seconds 86400)
5903 hours (/ seconds 3600)
5904 seconds (% seconds 3600)
5905 minutes (/ seconds 60)
5906 seconds (% seconds 60)
5907 format-args (if (> days 0)
5908 `("%d days, %d hours, %d minutes, %d seconds"
5909 ,days ,hours ,minutes ,seconds)
5910 (if (> hours 0)
5911 `("%d hours, %d minutes, %d seconds"
5912 ,hours ,minutes ,seconds)
5913 (if (> minutes 0)
5914 `("%d minutes, %d seconds" ,minutes ,seconds)
5915 `("%d seconds" ,seconds))))
5916 output (apply 'format format-args))
5917 ;; Change all "1 units" to "1 unit".
5919 (setq output (erc-replace-match-subexpression-in-string
5920 "" output (match-string 2 output) 2 (match-beginning 2))))
5921 output))
5924 ;; info
5926 (defconst erc-clientinfo-alist
5927 '(("ACTION" . "is used to inform about one's current activity")
5928 ("CLIENTINFO" . "gives help on CTCP commands supported by client")
5929 ("ECHO" . "echoes its arguments back")
5930 ("FINGER" . "shows user's name, location, and idle time")
5931 ("PING" . "measures delay between peers")
5932 ("TIME" . "shows client-side time")
5933 ("USERINFO" . "shows information provided by a user")
5934 ("VERSION" . "shows client type and version"))
5935 "Alist of CTCP CLIENTINFO for ERC commands.")
5937 (defun erc-client-info (s)
5938 "Return CTCP CLIENTINFO on command S.
5939 If S is nil or an empty string then return general CLIENTINFO."
5940 (if (or (not s) (string= s ""))
5941 (concat
5942 (apply #'concat
5943 (mapcar (lambda (e)
5944 (concat (car e) " "))
5945 erc-clientinfo-alist))
5946 ": use CLIENTINFO <COMMAND> to get more specific information")
5947 (let ((h (assoc (upcase s) erc-clientinfo-alist)))
5948 (if h
5949 (concat s " " (cdr h))
5950 (concat s ": unknown command")))))
5952 ;; Hook functions
5954 (defun erc-directory-writable-p (dir)
5955 "Determine whether DIR is a writable directory.
5956 If it doesn't exist, create it."
5957 (unless (file-attributes dir) (make-directory dir))
5958 (or (file-accessible-directory-p dir) (error "Cannot access %s" dir)))
5960 (defun erc-kill-query-buffers (process)
5961 "Kill all buffers of PROCESS."
5962 ;; here, we only want to match the channel buffers, to avoid
5963 ;; "selecting killed buffers" b0rkage.
5964 (erc-with-all-buffers-of-server process
5965 (lambda ()
5966 (not (erc-server-buffer-p)))
5967 (kill-buffer (current-buffer))))
5969 (defun erc-nick-at-point ()
5970 "Give information about the nickname at `point'.
5972 If called interactively, give a human readable message in the
5973 minibuffer. If called programmatically, return the corresponding
5974 entry of `channel-members'."
5975 (interactive)
5976 (require 'thingatpt)
5977 (let* ((word (word-at-point))
5978 (channel-data (erc-get-channel-user word))
5979 (cuser (cdr channel-data))
5980 (user (if channel-data
5981 (car channel-data)
5982 (erc-get-server-user word)))
5983 host login full-name nick op voice)
5984 (when user
5985 (setq nick (erc-server-user-nickname user)
5986 host (erc-server-user-host user)
5987 login (erc-server-user-login user)
5988 full-name (erc-server-user-full-name user))
5989 (if cuser
5990 (setq op (erc-channel-user-op cuser)
5991 voice (erc-channel-user-voice cuser)))
5992 (if (called-interactively-p 'interactive)
5993 (message "%s is %s@%s%s%s"
5994 nick login host
5995 (if full-name (format " (%s)" full-name) "")
5996 (if (or op voice)
5997 (format " and is +%s%s on %s"
5998 (if op "o" "")
5999 (if voice "v" "")
6000 (erc-default-target))
6001 ""))
6002 user))))
6004 (defun erc-away-time ()
6005 "Return non-nil if the current ERC process is set away.
6007 In particular, the time that we were set away is returned.
6008 See `current-time' for details on the time format."
6009 (erc-with-server-buffer erc-away))
6011 ;; Mode line handling
6013 (defcustom erc-mode-line-format "%S %a"
6014 "A string to be formatted and shown in the mode-line in `erc-mode'.
6016 The string is formatted using `format-spec' and the result is set as the value
6017 of `mode-line-buffer-identification'.
6019 The following characters are replaced:
6021 %l: The estimated lag time to the server
6022 %m: The modes of the channel
6023 %n: The current nick name
6024 %N: The name of the network
6025 %o: The topic of the channel
6026 %p: The session port
6027 %t: The name of the target (channel, nickname, or servername:port)
6028 %s: In the server-buffer, this gets filled with the value of
6029 `erc-server-announced-name', in a channel, the value of
6030 (erc-default-target) also get concatenated.
6031 %S: In the server-buffer, this gets filled with the value of
6032 `erc-network', in a channel, the value of (erc-default-target)
6033 also get concatenated."
6034 :group 'erc-mode-line-and-header
6035 :type 'string)
6037 (defcustom erc-header-line-format "%n on %t (%m,%l) %o"
6038 "A string to be formatted and shown in the header-line in `erc-mode'.
6039 Only used starting in Emacs 21.
6041 Set this to nil if you do not want the header line to be
6042 displayed.
6044 See `erc-mode-line-format' for which characters are can be used."
6045 :group 'erc-mode-line-and-header
6046 :set (lambda (sym val)
6047 (set sym val)
6048 (when (fboundp 'erc-update-mode-line)
6049 (erc-update-mode-line nil)))
6050 :type '(choice (const :tag "Disabled" nil)
6051 string))
6053 (defcustom erc-header-line-uses-tabbar-p nil
6054 "Use tabbar mode instead of the header line to display the header."
6055 :group 'erc-mode-line-and-header
6056 :type 'boolean)
6058 (defcustom erc-header-line-uses-help-echo-p t
6059 "Show the contents of the header line in the echo area or as a tooltip
6060 when you move point into the header line."
6061 :group 'erc-mode-line-and-header
6062 :type 'boolean)
6064 (defcustom erc-header-line-face-method nil
6065 "Determine what method to use when colorizing the header line text.
6067 If nil, don't colorize the header text.
6068 If given a function, call it and use the resulting face name.
6069 Otherwise, use the `erc-header-line' face."
6070 :group 'erc-mode-line-and-header
6071 :type '(choice (const :tag "Don't colorize" nil)
6072 (const :tag "Use the erc-header-line face" t)
6073 (function :tag "Call a function")))
6075 (defcustom erc-show-channel-key-p t
6076 "Show the channel key in the header line."
6077 :group 'erc-paranoia
6078 :type 'boolean)
6080 (defcustom erc-mode-line-away-status-format
6081 "(AWAY since %a %b %d %H:%M) "
6082 "When you're away on a server, this is shown in the mode line.
6083 This should be a string with substitution variables recognized by
6084 `format-time-string'."
6085 :group 'erc-mode-line-and-header
6086 :type 'string)
6088 (defun erc-shorten-server-name (server-name)
6089 "Shorten SERVER-NAME according to `erc-common-server-suffixes'."
6090 (if (stringp server-name)
6091 (with-temp-buffer
6092 (insert server-name)
6093 (let ((alist erc-common-server-suffixes))
6094 (while alist
6095 (goto-char (point-min))
6096 (if (re-search-forward (caar alist) nil t)
6097 (replace-match (cdar alist)))
6098 (setq alist (cdr alist))))
6099 (buffer-string))))
6101 (defun erc-format-target ()
6102 "Return the name of the target (channel or nickname or servername:port)."
6103 (let ((target (erc-default-target)))
6104 (or target
6105 (concat (erc-shorten-server-name
6106 (or erc-server-announced-name
6107 erc-session-server))
6108 ":" (erc-port-to-string erc-session-port)))))
6110 (defun erc-format-target-and/or-server ()
6111 "Return the server name or the current target and server name combined."
6112 (let ((server-name (erc-shorten-server-name
6113 (or erc-server-announced-name
6114 erc-session-server))))
6115 (cond ((erc-default-target)
6116 (concat (erc-string-no-properties (erc-default-target))
6117 "@" server-name))
6118 (server-name server-name)
6119 (t (buffer-name (current-buffer))))))
6121 (defun erc-format-network ()
6122 "Return the name of the network we are currently on."
6123 (let ((network (and (fboundp 'erc-network-name) (erc-network-name))))
6124 (if (and network (symbolp network))
6125 (symbol-name network)
6126 "")))
6128 (defun erc-format-target-and/or-network ()
6129 "Return the network or the current target and network combined.
6130 If the name of the network is not available, then use the
6131 shortened server name instead."
6132 (let ((network-name (or (and (fboundp 'erc-network-name) (erc-network-name))
6133 (erc-shorten-server-name
6134 (or erc-server-announced-name
6135 erc-session-server)))))
6136 (when (and network-name (symbolp network-name))
6137 (setq network-name (symbol-name network-name)))
6138 (cond ((erc-default-target)
6139 (concat (erc-string-no-properties (erc-default-target))
6140 "@" network-name))
6141 (network-name network-name)
6142 (t (buffer-name (current-buffer))))))
6144 (defun erc-format-away-status ()
6145 "Return a formatted `erc-mode-line-away-status-format'
6146 if `erc-away' is non-nil."
6147 (let ((a (erc-away-time)))
6148 (if a
6149 (format-time-string erc-mode-line-away-status-format a)
6150 "")))
6152 (defun erc-format-channel-modes ()
6153 "Return the current channel's modes."
6154 (concat (apply 'concat
6155 "+" erc-channel-modes)
6156 (cond ((and erc-channel-user-limit erc-channel-key)
6157 (if erc-show-channel-key-p
6158 (format "lk %.0f %s" erc-channel-user-limit
6159 erc-channel-key)
6160 (format "kl %.0f" erc-channel-user-limit)))
6161 (erc-channel-user-limit
6162 ;; Emacs has no bignums
6163 (format "l %.0f" erc-channel-user-limit))
6164 (erc-channel-key
6165 (if erc-show-channel-key-p
6166 (format "k %s" erc-channel-key)
6167 "k"))
6168 (t nil))))
6170 (defun erc-format-lag-time ()
6171 "Return the estimated lag time to server, `erc-server-lag'."
6172 (let ((lag (erc-with-server-buffer erc-server-lag)))
6173 (cond (lag (format "lag:%.0f" lag))
6174 (t ""))))
6176 ;; erc-goodies is required at end of this file.
6177 (declare-function erc-controls-strip "erc-goodies" (str))
6179 (defvar tabbar--local-hlf)
6181 (defun erc-update-mode-line-buffer (buffer)
6182 "Update the mode line in a single ERC buffer BUFFER."
6183 (with-current-buffer buffer
6184 (let ((spec (format-spec-make
6185 ?a (erc-format-away-status)
6186 ?l (erc-format-lag-time)
6187 ?m (erc-format-channel-modes)
6188 ?n (or (erc-current-nick) "")
6189 ?N (erc-format-network)
6190 ?o (or (erc-controls-strip erc-channel-topic) "")
6191 ?p (erc-port-to-string erc-session-port)
6192 ?s (erc-format-target-and/or-server)
6193 ?S (erc-format-target-and/or-network)
6194 ?t (erc-format-target)))
6195 (process-status (cond ((and (erc-server-process-alive)
6196 (not erc-server-connected))
6197 ":connecting")
6198 ((erc-server-process-alive)
6199 "")
6200 (t
6201 ": CLOSED")))
6202 (face (cond ((eq erc-header-line-face-method nil)
6203 nil)
6204 ((functionp erc-header-line-face-method)
6205 (funcall erc-header-line-face-method))
6206 (t
6207 'erc-header-line))))
6208 (cond ((featurep 'xemacs)
6209 (setq modeline-buffer-identification
6210 (list (format-spec erc-mode-line-format spec)))
6211 (setq modeline-process (list process-status)))
6212 (t
6213 (setq mode-line-buffer-identification
6214 (list (format-spec erc-mode-line-format spec)))
6215 (setq mode-line-process (list process-status))))
6216 (when (boundp 'header-line-format)
6217 (let ((header (if erc-header-line-format
6218 (format-spec erc-header-line-format spec)
6219 nil)))
6220 (cond (erc-header-line-uses-tabbar-p
6221 (set (make-local-variable 'tabbar--local-hlf)
6222 header-line-format)
6223 (kill-local-variable 'header-line-format))
6224 ((null header)
6225 (setq header-line-format nil))
6226 (erc-header-line-uses-help-echo-p
6227 (let ((help-echo (with-temp-buffer
6228 (insert header)
6229 (fill-region (point-min) (point-max))
6230 (buffer-string))))
6231 (setq header-line-format
6232 (erc-replace-regexp-in-string
6233 "%"
6234 "%%"
6235 (if face
6236 (erc-propertize header 'help-echo help-echo
6237 'face face)
6238 (erc-propertize header 'help-echo help-echo))))))
6239 (t (setq header-line-format
6240 (if face
6241 (erc-propertize header 'face face)
6242 header)))))))
6243 (if (featurep 'xemacs)
6244 (redraw-modeline)
6245 (force-mode-line-update))))
6247 (defun erc-update-mode-line (&optional buffer)
6248 "Update the mode line in BUFFER.
6250 If BUFFER is nil, update the mode line in all ERC buffers."
6251 (if (and buffer (bufferp buffer))
6252 (erc-update-mode-line-buffer buffer)
6253 (dolist (buf (erc-buffer-list))
6254 (when (buffer-live-p buf)
6255 (erc-update-mode-line-buffer buf)))))
6257 ;; Miscellaneous
6259 (defun erc-port-to-string (p)
6260 "Convert port P to a string.
6261 P may be an integer or a service name."
6262 (if (integerp p)
6263 (int-to-string p)
6264 p))
6266 (defun erc-string-to-port (s)
6267 "Convert string S to either an integer port number or a service name."
6268 (if (numberp s)
6269 s
6270 (let ((n (string-to-number s)))
6271 (if (= n 0)
6272 s
6273 n))))
6275 (defun erc-version (&optional here)
6276 "Show the version number of ERC in the minibuffer.
6277 If optional argument HERE is non-nil, insert version number at point."
6278 (interactive "P")
6279 (let ((version-string
6280 (format "ERC %s (GNU Emacs %s)" erc-version-string emacs-version)))
6281 (if here
6282 (insert version-string)
6283 (if (called-interactively-p 'interactive)
6284 (message "%s" version-string)
6285 version-string))))
6287 (defun erc-modes (&optional here)
6288 "Show the active ERC modes in the minibuffer.
6289 If optional argument HERE is non-nil, insert version number at point."
6290 (interactive "P")
6291 (let ((string
6292 (mapconcat 'identity
6293 (let (modes (case-fold-search nil))
6294 (dolist (var (apropos-internal "^erc-.*mode$"))
6295 (when (and (boundp var)
6296 (symbol-value var))
6297 (setq modes (cons (symbol-name var)
6298 modes))))
6299 modes)
6300 ", ")))
6301 (if here
6302 (insert string)
6303 (if (called-interactively-p 'interactive)
6304 (message "%s" string)
6305 string))))
6307 (defun erc-trim-string (s)
6308 "Trim leading and trailing spaces off S."
6309 (cond
6310 ((not (stringp s)) nil)
6312 "")
6314 (match-string 1 s))
6315 (t
6316 s)))
6318 (defun erc-arrange-session-in-multiple-windows ()
6319 "Open a window for every non-server buffer related to `erc-session-server'.
6321 All windows are opened in the current frame."
6322 (interactive)
6323 (unless erc-server-process
6324 (error "No erc-server-process found in current buffer"))
6325 (let ((bufs (erc-buffer-list nil erc-server-process)))
6326 (when bufs
6327 (delete-other-windows)
6328 (switch-to-buffer (car bufs))
6329 (setq bufs (cdr bufs))
6330 (while bufs
6331 (split-window)
6332 (other-window 1)
6333 (switch-to-buffer (car bufs))
6334 (setq bufs (cdr bufs))
6335 (balance-windows)))))
6337 (defun erc-popup-input-buffer ()
6338 "Provide an input buffer."
6339 (interactive)
6340 (let ((buffer-name (generate-new-buffer-name "*ERC input*"))
6341 (mode (intern
6342 (completing-read
6343 "Mode: "
6344 (mapcar (lambda (e)
6345 (list (symbol-name e)))
6346 (apropos-internal "-mode$" 'commandp))
6347 nil t))))
6348 (pop-to-buffer (make-indirect-buffer (current-buffer) buffer-name))
6349 (funcall mode)
6350 (narrow-to-region (point) (point))
6351 (shrink-window-if-larger-than-buffer)))
6353 ;;; Message catalog
6355 (defun erc-make-message-variable-name (catalog entry)
6356 "Create a variable name corresponding to CATALOG's ENTRY."
6357 (intern (concat "erc-message-"
6358 (symbol-name catalog) "-" (symbol-name entry))))
6360 (defun erc-define-catalog-entry (catalog entry format-spec)
6361 "Set CATALOG's ENTRY to FORMAT-SPEC."
6362 (set (erc-make-message-variable-name catalog entry)
6363 format-spec))
6365 (defun erc-define-catalog (catalog entries)
6366 "Define a CATALOG according to ENTRIES."
6367 (dolist (entry entries)
6368 (erc-define-catalog-entry catalog (car entry) (cdr entry))))
6370 (erc-define-catalog
6371 'english
6372 '((bad-ping-response . "Unexpected PING response from %n (time %t)")
6375 (cannot-find-file . "Cannot find file %f")
6376 (cannot-read-file . "Cannot read file %f")
6377 (connect . "Connecting to %S:%p... ")
6378 (country . "%c")
6379 (country-unknown . "%d: No such domain")
6380 (ctcp-empty . "Illegal empty CTCP query received from %n. Ignoring.")
6381 (ctcp-request . "==> CTCP request from %n (%u@%h): %r")
6382 (ctcp-request-to . "==> CTCP request from %n (%u@%h) to %t: %r")
6383 (ctcp-too-many . "Too many CTCP queries in single message. Ignoring")
6384 (flood-ctcp-off . "FLOOD PROTECTION: Automatic CTCP responses turned off.")
6385 (flood-strict-mode
6386 . "FLOOD PROTECTION: Switched to Strict Flood Control mode.")
6388 (disconnected-noreconnect
6393 (nick-in-use . "%n is in use. Choose new nickname: ")
6394 (nick-too-long
6395 . "WARNING: Nick length (%i) exceeds max NICKLEN(%l) defined by server")
6396 (no-default-channel . "No default channel")
6397 (no-invitation . "You've got no invitation")
6398 (no-target . "No target")
6399 (ops . "%i operator%s: %o")
6400 (ops-none . "No operators in this channel.")
6401 (undefined-ctcp . "Undefined CTCP query received. Silently ignored")
6402 (variable-not-bound . "Variable not bound!")
6403 (ACTION . "* %n %a")
6404 (CTCP-CLIENTINFO . "Client info for %n: %m")
6405 (CTCP-ECHO . "Echo %n: %m")
6406 (CTCP-FINGER . "Finger info for %n: %m")
6407 (CTCP-PING . "Ping time to %n is %t")
6408 (CTCP-TIME . "Time by %n is %m")
6409 (CTCP-UNKNOWN . "Unknown CTCP message from %n (%u@%h): %m")
6410 (CTCP-VERSION . "Version for %n is %m")
6412 (INVITE . "%n (%u@%h) invites you to channel %c")
6413 (JOIN . "%n (%u@%h) has joined channel %c")
6414 (JOIN-you . "You have joined channel %c")
6415 (KICK . "%n (%u@%h) has kicked %k off channel %c: %r")
6416 (KICK-you . "You have been kicked off channel %c by %n (%u@%h): %r")
6417 (KICK-by-you . "You have kicked %k off channel %c: %r")
6418 (MODE . "%n (%u@%h) has changed mode for %t to %m")
6419 (MODE-nick . "%n has changed mode for %t to %m")
6420 (NICK . "%n (%u@%h) is now known as %N")
6421 (NICK-you . "Your new nickname is %N")
6422 (PART . erc-message-english-PART)
6423 (PING . "PING from server (last: %s sec. ago)")
6424 (PONG . "PONG from %h (%i second%s)")
6425 (QUIT . "%n (%u@%h) has quit: %r")
6427 (WALLOPS . "Wallops from %n: %m")
6428 (s004 . "%s %v %U %C")
6429 (s221 . "User modes for %n: %m")
6430 (s252 . "%i operator(s) online")
6431 (s253 . "%i unknown connection(s)")
6432 (s254 . "%i channels formed")
6433 (s275 . "%n %m")
6434 (s301 . "%n is AWAY: %r")
6435 (s303 . "Is online: %n")
6436 (s305 . "%m")
6437 (s306 . "%m")
6438 (s307 . "%n %m")
6439 (s311 . "%n is %f (%u@%h)")
6440 (s312 . "%n is/was on server %s (%c)")
6441 (s313 . "%n is an IRC operator")
6442 (s314 . "%n was %f (%u@%h)")
6443 (s317 . "%n has been idle for %i")
6444 (s317-on-since . "%n has been idle for %i, on since %t")
6445 (s319 . "%n is on channel(s): %c")
6446 (s320 . "%n is an identified user")
6447 (s321 . "Channel Users Topic")
6448 (s322 . "%c [%u] %t")
6449 (s324 . "%c modes: %m")
6450 (s328 . "%c URL: %u")
6451 (s329 . "%c was created on %t")
6452 (s330 . "%n %a %i")
6453 (s331 . "No topic is set for %c")
6454 (s332 . "Topic for %c: %T")
6455 (s333 . "%c: topic set by %n, %t")
6456 (s341 . "Inviting %n to channel %c")
6457 (s352 . "%-11c %-10n %-4a %u@%h (%f)")
6458 (s353 . "Users on %c: %u")
6459 (s367 . "Ban for %b on %c")
6460 (s367-set-by . "Ban for %b on %c set by %s on %t")
6461 (s368 . "Banlist of %c ends.")
6462 (s379 . "%c: Forwarded to %f")
6463 (s391 . "The time at %s is %t")
6464 (s401 . "%n: No such nick/channel")
6465 (s403 . "%c: No such channel")
6466 (s404 . "%c: Cannot send to channel")
6467 (s405 . "%c: You have joined too many channels")
6468 (s406 . "%n: There was no such nickname")
6469 (s412 . "No text to send")
6470 (s421 . "%c: Unknown command")
6471 (s431 . "No nickname given")
6472 (s432 . "%n is an erroneous nickname")
6473 (s442 . "%c: You're not on that channel")
6474 (s445 . "SUMMON has been disabled")
6475 (s446 . "USERS has been disabled")
6476 (s451 . "You have not registered")
6477 (s461 . "%c: not enough parameters")
6478 (s462 . "Unauthorized command (already registered)")
6479 (s463 . "Your host isn't among the privileged")
6480 (s464 . "Password incorrect")
6481 (s465 . "You are banned from this server")
6482 (s474 . "You can't join %c because you're banned (+b)")
6483 (s475 . "You must specify the correct channel key (+k) to join %c")
6484 (s481 . "Permission Denied - You're not an IRC operator")
6485 (s482 . "You need to be a channel operator of %c to do that")
6486 (s483 . "You can't kill a server!")
6487 (s484 . "Your connection is restricted!")
6488 (s485 . "You're not the original channel operator")
6489 (s491 . "No O-lines for your host")
6490 (s501 . "Unknown MODE flag")
6491 (s502 . "You can't change modes for other users")
6492 (s671 . "%n %a")))
6494 (defun erc-message-english-PART (&rest args)
6495 "Format a proper PART message.
6497 This function is an example on what could be done with formatting
6498 functions."
6499 (let ((nick (cadr (memq ?n args)))
6500 (user (cadr (memq ?u args)))
6501 (host (cadr (memq ?h args)))
6502 (channel (cadr (memq ?c args)))
6503 (reason (cadr (memq ?r args))))
6504 (if (string= nick (erc-current-nick))
6505 (format "You have left channel %s" channel)
6506 (format "%s (%s@%s) has left channel %s%s"
6507 nick user host channel
6508 (if (not (string= reason ""))
6509 (format ": %s"
6510 (erc-replace-regexp-in-string "%" "%%" reason))
6511 "")))))
6514 (defvar erc-current-message-catalog 'english)
6515 (make-variable-buffer-local 'erc-current-message-catalog)
6517 (defun erc-retrieve-catalog-entry (entry &optional catalog)
6518 "Retrieve ENTRY from CATALOG.
6520 If CATALOG is nil, `erc-current-message-catalog' is used.
6522 If ENTRY is nil in CATALOG, it is retrieved from the fallback,
6523 english, catalog."
6524 (unless catalog (setq catalog erc-current-message-catalog))
6525 (let ((var (erc-make-message-variable-name catalog entry)))
6526 (if (boundp var)
6527 (symbol-value var)
6528 (when (boundp (erc-make-message-variable-name 'english entry))
6529 (symbol-value (erc-make-message-variable-name 'english entry))))))
6531 (defun erc-format-message (msg &rest args)
6532 "Format MSG according to ARGS.
6534 See also `format-spec'."
6535 (when (eq (logand (length args) 1) 1) ; oddp
6536 (error "Obscure usage of this function appeared"))
6537 (let ((entry (erc-retrieve-catalog-entry msg)))
6538 (when (not entry)
6539 (error "No format spec for message %s" msg))
6540 (when (functionp entry)
6541 (setq entry (apply entry args)))
6542 (format-spec entry (apply 'format-spec-make args))))
6544 ;;; Various hook functions
6546 (add-hook 'kill-buffer-hook 'erc-kill-buffer-function)
6548 (defcustom erc-kill-server-hook '(erc-kill-server)
6549 "Invoked whenever a server buffer is killed via `kill-buffer'."
6550 :group 'erc-hooks
6551 :type 'hook)
6553 (defcustom erc-kill-channel-hook '(erc-kill-channel)
6554 "Invoked whenever a channel-buffer is killed via `kill-buffer'."
6555 :group 'erc-hooks
6556 :type 'hook)
6558 (defcustom erc-kill-buffer-hook nil
6559 "Hook run whenever a non-server or channel buffer is killed.
6561 See also `kill-buffer'."
6562 :group 'erc-hooks
6563 :type 'hook)
6565 (defun erc-kill-buffer-function ()
6566 "Function to call when an ERC buffer is killed.
6567 This function should be on `kill-buffer-hook'.
6568 When the current buffer is in `erc-mode', this function will run
6569 one of the following hooks:
6570 `erc-kill-server-hook' if the server buffer was killed,
6571 `erc-kill-channel-hook' if a channel buffer was killed,
6572 or `erc-kill-buffer-hook' if any other buffer."
6573 (when (eq major-mode 'erc-mode)
6574 (erc-remove-channel-users)
6575 (cond
6576 ((eq (erc-server-buffer) (current-buffer))
6577 (run-hooks 'erc-kill-server-hook))
6578 ((erc-channel-p (erc-default-target))
6579 (run-hooks 'erc-kill-channel-hook))
6580 (t
6581 (run-hooks 'erc-kill-buffer-hook)))))
6583 (defun erc-kill-server ()
6584 "Sends a QUIT command to the server when the server buffer is killed.
6585 This function should be on `erc-kill-server-hook'."
6586 (when (erc-server-process-alive)
6587 (setq erc-server-quitting t)
6588 (erc-server-send (format "QUIT :%s" (funcall erc-quit-reason nil)))))
6590 (defun erc-kill-channel ()
6591 "Sends a PART command to the server when the channel buffer is killed.
6592 This function should be on `erc-kill-channel-hook'."
6593 (when (erc-server-process-alive)
6594 (let ((tgt (erc-default-target)))
6595 (erc-server-send (format "PART %s :%s" tgt
6596 (funcall erc-part-reason nil))
6597 nil tgt))))
6599 ;;; Dealing with `erc-parsed'
6601 (defun erc-find-parsed-property ()
6602 "Find the next occurrence of the `erc-parsed' text property."
6603 (text-property-not-all (point-min) (point-max) 'erc-parsed nil))
6605 (defun erc-restore-text-properties ()
6606 "Restore the property 'erc-parsed for the region."
6607 (let ((parsed-posn (erc-find-parsed-property)))
6608 (put-text-property
6609 (point-min) (point-max)
6610 'erc-parsed (when parsed-posn (erc-get-parsed-vector parsed-posn)))))
6612 (defun erc-get-parsed-vector (point)
6613 "Return the whole parsed vector on POINT."
6614 (get-text-property point 'erc-parsed))
6616 (defun erc-get-parsed-vector-nick (vect)
6617 "Return nickname in the parsed vector VECT."
6618 (let* ((untreated-nick (and vect (erc-response.sender vect)))
6619 (maybe-nick (when untreated-nick
6620 (car (split-string untreated-nick "!")))))
6621 (when (and (not (null maybe-nick))
6622 (erc-is-valid-nick-p maybe-nick))
6623 untreated-nick)))
6625 (defun erc-get-parsed-vector-type (vect)
6626 "Return message type in the parsed vector VECT."
6627 (and vect
6628 (erc-response.command vect)))
6630 ;; Teach url.el how to open irc:// URLs with ERC.
6631 ;; To activate, customize `url-irc-function' to `url-irc-erc'.
6633 ;;;###autoload
6634 (defun erc-handle-irc-url (host port channel user password)
6635 "Use ERC to IRC on HOST:PORT in CHANNEL as USER with PASSWORD.
6636 If ERC is already connected to HOST:PORT, simply /join CHANNEL.
6637 Otherwise, connect to HOST:PORT as USER and /join CHANNEL."
6638 (let ((server-buffer
6639 (car (erc-buffer-filter
6640 (lambda ()
6641 (and (string-equal erc-session-server host)
6642 (= erc-session-port port)
6643 (erc-open-server-buffer-p)))))))
6644 (with-current-buffer (or server-buffer (current-buffer))
6645 (if (and server-buffer channel)
6646 (erc-cmd-JOIN channel)
6647 (erc-open host port (or user (erc-compute-nick)) (erc-compute-full-name)
6648 (not server-buffer) password nil channel
6649 (when server-buffer
6650 (get-buffer-process server-buffer)))))))
6652 (provide 'erc)
6654 ;; Deprecated. We might eventually stop requiring the goodies automatically.
6655 ;; IMPORTANT: This require must appear _after_ the above (provide 'erc) to
6656 ;; avoid a recursive require error when byte-compiling the entire package.
6657 (require 'erc-goodies)
6659 ;;; erc.el ends here
6660 ;;
6661 ;; Local Variables:
6662 ;; outline-regexp: ";;+"
6663 ;; indent-tabs-mode: t
6664 ;; tab-width: 8
6665 ;; End: