rcirc.el 73.1 KB
Newer Older
Richard M. Stallman's avatar
Richard M. Stallman committed
1 2 3 4 5 6 7 8
;;; rcirc.el --- default, simple IRC client.

;; Copyright (C) 2005 Free Software Foundation, Inc.

;; Author: Ryan Yeske
;; URL: http://www.nongnu.org/rcirc
;; Keywords: comm

9
;; This file is part of GNU Emacs.
Richard M. Stallman's avatar
Richard M. Stallman committed
10 11 12 13 14 15 16 17 18 19 20 21

;; This file is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation; either version 2, or (at your option)
;; any later version.

;; This file is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	 See the
;; GNU General Public License for more details.

;; You should have received a copy of the GNU General Public License
22 23 24
;; along with GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
Richard M. Stallman's avatar
Richard M. Stallman committed
25 26 27

;;; Commentary:

28 29 30 31 32 33 34 35 36 37 38
;; Internet Relay Chat (IRC) is a form of instant communication over
;; the Internet. It is mainly designed for group (many-to-many)
;; communication in discussion forums called channels, but also allows
;; one-to-one communication.

;; Rcirc has simple defaults and clear and consistent behaviour.
;; Message arrival timestamps, activity notification on the modeline,
;; message filling, nick completion, and keepalive pings are all
;; enabled by default, but can easily be adjusted or turned off.  Each
;; discussion takes place in its own buffer and there is a single
;; server buffer per connection.
Richard M. Stallman's avatar
Richard M. Stallman committed
39 40 41 42 43 44 45 46 47 48

;; Open a new irc connection with:
;; M-x irc RET

;;; Code:

(require 'ring)
(require 'time-date)
(eval-when-compile (require 'cl))

49 50 51 52 53 54 55 56 57 58
(defgroup rcirc nil
  "Simple IRC client."
  :version "22.1"
  :prefix "rcirc"
  :group 'applications)

(defcustom rcirc-server "irc.freenode.net"
  "The default server to connect to."
  :type 'string
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
59

60 61 62 63
(defcustom rcirc-port 6667
  "The default port to connect to."
  :type 'integer
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
64

65 66 67 68
(defcustom rcirc-nick (user-login-name)
  "Your nick."
  :type 'string
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
69

70 71 72 73
(defcustom rcirc-user-name (user-login-name)
  "Your user name sent to the server when connecting."
  :type 'string
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
74

75
(defcustom rcirc-user-full-name (if (string= (user-full-name) "")
Richard M. Stallman's avatar
Richard M. Stallman committed
76 77
				 rcirc-user-name
			       (user-full-name))
78 79 80
  "The full name sent to the server when connecting."
  :type 'string
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
81

82
(defcustom rcirc-startup-channels-alist nil
Richard M. Stallman's avatar
Richard M. Stallman committed
83
  "Alist of channels to join at startup.
84 85 86
Each element looks like (SERVER-REGEXP . CHANNEL-LIST)."
  :type '(alist :key-type string :value-type (repeat string))
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
87

88 89 90 91
(defcustom rcirc-fill-flag t
  "*Non-nil means line-wrap messages printed in channel buffers."
  :type 'boolean
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
92

93 94
(defcustom rcirc-fill-column nil
  "*Column beyond which automatic line-wrapping should happen.
95
If nil, use value of `fill-column'.  If 'frame-width, use the
96 97 98 99 100
maximum frame width."
  :type '(choice (const :tag "Value of `fill-column'")
		 (const :tag "Full frame width" frame-width)
		 (integer :tag "Number of columns"))
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
101

102
(defcustom rcirc-fill-prefix nil
Richard M. Stallman's avatar
Richard M. Stallman committed
103 104
  "*Text to insert before filled lines.
If nil, calculate the prefix dynamically to line up text
105 106 107 108
underneath each nick."
  :type '(choice (const :tag "Dynamic" nil)
		 (string :tag "Prefix text"))
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
109

110 111 112
(defvar rcirc-ignore-buffer-activity-flag nil
  "If non-nil, ignore activity in this buffer.")
(make-variable-buffer-local 'rcirc-ignore-buffer-activity-flag)
Richard M. Stallman's avatar
Richard M. Stallman committed
113

114 115 116 117
(defcustom rcirc-ignore-all-activity-flag nil
  "*Non-nil means do not indicate any activity in the modeline."
  :type 'boolean
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
118

119
(defcustom rcirc-time-format "%H:%M "
Richard M. Stallman's avatar
Richard M. Stallman committed
120
  "*Describes how timestamps are printed.
121 122 123
Used as the first arg to `format-time-string'."
  :type 'string
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
124

125 126 127 128
(defcustom rcirc-input-ring-size 1024
  "*Size of input history ring."
  :type 'integer
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
129

130
(defcustom rcirc-read-only-flag t
131
  "*Non-nil means make text in IRC buffers read-only."
132 133
  :type 'boolean
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
134

135
(defcustom rcirc-buffer-maximum-lines nil
Richard M. Stallman's avatar
Richard M. Stallman committed
136 137
  "*The maximum size in lines for rcirc buffers.
Channel buffers are truncated from the top to be no greater than this
138 139 140 141
number.	 If zero or nil, no truncating is done."
  :type '(choice (const :tag "No truncation" nil)
		 (integer :tag "Number of lines"))
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
142

143
(defcustom rcirc-authinfo-file-name
Richard M. Stallman's avatar
Richard M. Stallman committed
144 145 146 147 148 149 150 151 152 153 154 155 156 157 158
  "~/.rcirc-authinfo"
  "File containing rcirc authentication passwords.
The file consists of a single list, with each element itself a
list with a SERVER-REGEXP string, a NICK-REGEXP string, a METHOD
and the remaining method specific ARGUMENTS.  The valid METHOD
symbols are `nickserv', `chanserv' and `bitlbee'.

The required ARGUMENTS for each METHOD symbol are:
  `nickserv': PASSWORD
  `chanserv': CHANNEL PASSWORD
  `bitlbee': PASSWORD

Example:
 ((\"freenode\" \"bob\" nickserv \"p455w0rd\")
  (\"freenode\" \"bob\" chanserv \"#bobland\" \"passwd99\")
159 160 161
  (\"bitlbee\" \"robert\" bitlbee \"sekrit\"))"
  :type 'string
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
162

163
(defcustom rcirc-auto-authenticate-flag (file-readable-p rcirc-authinfo-file-name)
Richard M. Stallman's avatar
Richard M. Stallman committed
164
  "*Non-nil means automatically send authentication string to server.
165 166 167
See also `rcirc-authinfo-file-name'."
  :type 'boolean
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
168

169
(defcustom rcirc-prompt "> "
170
  "Prompt string to use in IRC buffers.
Richard M. Stallman's avatar
Richard M. Stallman committed
171 172 173 174 175 176

The following replacements are made:
%n is your nick.
%s is the server.
%t is the buffer target, a channel or a user.

177 178 179 180 181 182 183
Setting this alone will not affect the prompt;
use either M-x customize or also call `rcirc-update-prompt'."
  :type 'string
  :set 'rcirc-set-changed
  :initialize 'custom-initialize-default
  :group 'rcirc)

184 185 186 187 188 189 190 191 192 193 194 195
(defcustom rcirc-ignore-list ()
  "List of ignored nicks.
Use /ignore to list them, use /ignore NICK to add or remove a nick."
  :type '(repeat string)
  :group 'rcirc)

(defvar rcirc-ignore-list-automatic ()
  "List of ignored nicks added to `rcirc-ignore-list' because of renaming.
When an ignored person renames, their nick is added to both lists.
Nicks will be removed from the automatic list on follow-up renamings or
parts.")

196 197 198 199 200
(defcustom rcirc-print-hooks nil
  "Hook run after text is printed.
Called with 5 arguments, PROCESS, SENDER, RESPONSE, TARGET and TEXT."
  :type 'hook
  :group 'rcirc)
Richard M. Stallman's avatar
Richard M. Stallman committed
201 202 203 204 205 206

(defvar rcirc-prompt-start-marker nil)
(defvar rcirc-prompt-end-marker nil)

(defvar rcirc-nick-table nil)

207 208 209 210 211 212 213 214
(defvar rcirc-nick-syntax-table
  (let ((table (make-syntax-table text-mode-syntax-table)))
    (mapc (lambda (c) (modify-syntax-entry c "w" table))
          "[]\\`_^{|}-")
    (modify-syntax-entry ?' "_" table)
    table)
  "Syntax table which includes all nick characters as word constituents.")

215 216 217
;; each process has an alist of (target . buffer) pairs
(defvar rcirc-buffer-alist nil)

Richard M. Stallman's avatar
Richard M. Stallman committed
218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236
(defvar rcirc-activity nil
  "List of channels with unviewed activity.")

(defvar rcirc-activity-string ""
  "String displayed in modeline representing `rcirc-activity'.")
(put 'rcirc-activity-string 'risky-local-variable t)

(defvar rcirc-process nil
  "The server process associated with this buffer.")

(defvar rcirc-target nil
  "The channel or user associated with this buffer.")

(defvar rcirc-urls nil
  "List of urls seen in the current buffer.")

(defvar rcirc-keepalive-seconds 60
  "Number of seconds between keepalive pings.")

237
(defconst rcirc-id-string (concat "rcirc on GNU Emacs " emacs-version))
Richard M. Stallman's avatar
Richard M. Stallman committed
238 239 240 241 242 243 244 245

(defvar rcirc-startup-channels nil)
;;;###autoload
(defun rcirc (&optional server port nick channels)
  "Connect to IRC.

If any of the the optional SERVER, PORT, NICK or CHANNELS are not
supplied, they are taken from the variables `rcirc-server',
246
`rcirc-port', `rcirc-nick', and `rcirc-startup-channels-alist',
Richard M. Stallman's avatar
Richard M. Stallman committed
247 248 249 250 251 252 253 254 255 256
respectively."
  (interactive (list (read-string "IRC Server: " rcirc-server)
		     (read-string "IRC Port: " (number-to-string rcirc-port))
		     (read-string "IRC Nick: " rcirc-nick)))
  (or server (setq server rcirc-server))
  (or port (setq port rcirc-port))
  (or nick (setq nick rcirc-nick))
  (or channels
      (setq channels
	    (if (interactive-p)
257 258 259 260 261 262
		(split-string
		 (read-string "Channels: "
			      (mapconcat 'identity
					 (rcirc-startup-channels server)
					 " "))
			 "[, ]+" t)
Richard M. Stallman's avatar
Richard M. Stallman committed
263 264 265 266 267
	      (rcirc-startup-channels server))))
  (or global-mode-string (setq global-mode-string '("")))
  (and (not (memq 'rcirc-activity-string global-mode-string))
       (setq global-mode-string
	     (append global-mode-string '(rcirc-activity-string))))
268 269
  (add-hook 'window-configuration-change-hook
	    'rcirc-window-configuration-change)
Richard M. Stallman's avatar
Richard M. Stallman committed
270 271 272 273 274 275 276 277 278 279
  (rcirc-connect server port nick rcirc-user-name rcirc-user-full-name
		 channels))

;;;###autoload
(defalias 'irc 'rcirc)


(defvar rcirc-process-output nil)
(defvar rcirc-topic nil)
(defvar rcirc-keepalive-timer nil)
280
(defvar rcirc-last-server-message-time nil)
Richard M. Stallman's avatar
Richard M. Stallman committed
281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296
(defun rcirc-connect (server port nick user-name full-name startup-channels)
  "Return a connection to SERVER on PORT.

User will identify using the values of NICK, USER-NAME and
FULL-NAME.  The variable list of channel names in
STARTUP-CHANNELS will automatically be joined on startup."
  (save-excursion
    (message "Connecting to %s..." server)
    (let* ((inhibit-eol-conversion)
           (port-number (if (stringp port)
                            (string-to-number port)
                          port))
           (process (open-network-stream server nil server port-number)))
      ;; set up process
      (set-process-coding-system process 'raw-text 'raw-text)
      (set-process-filter process 'rcirc-filter)
297
      (switch-to-buffer (rcirc-generate-new-buffer-name process nil))
Richard M. Stallman's avatar
Richard M. Stallman committed
298 299 300
      (set-process-buffer process (current-buffer))
      (set-process-sentinel process 'rcirc-sentinel)
      (rcirc-mode process nil)
301 302
      (make-local-variable 'rcirc-buffer-alist)
      (setq rcirc-buffer-alist nil)
Richard M. Stallman's avatar
Richard M. Stallman committed
303 304 305 306 307 308 309 310 311 312
      (make-local-variable 'rcirc-nick-table)
      (setq rcirc-nick-table (make-hash-table :test 'equal))
      (make-local-variable 'rcirc-server)
      (setq rcirc-server server)
      (make-local-variable 'rcirc-nick)
      (setq rcirc-nick nick)
      (make-local-variable 'rcirc-process-output)
      (setq rcirc-process-output nil)
      (make-local-variable 'rcirc-startup-channels)
      (setq rcirc-startup-channels startup-channels)
313 314
      (make-local-variable 'rcirc-last-server-message-time)
      (setq rcirc-last-server-message-time (current-time))
Richard M. Stallman's avatar
Richard M. Stallman committed
315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331

      ;; identify
      (rcirc-send-string process (concat "NICK " nick))
      (rcirc-send-string process (concat "USER " user-name
                                      " hostname servername :"
                                      full-name))

      ;; setup ping timer if necessary
      (unless rcirc-keepalive-timer
        (setq rcirc-keepalive-timer
              (run-at-time 0 rcirc-keepalive-seconds 'rcirc-keepalive)))

      (message "Connecting to %s...done" server)

      ;; return process object
      process)))

332 333 334 335 336
(defmacro with-rcirc-process-buffer (process &rest body)
  (declare (indent 1) (debug t))
  `(with-current-buffer (process-buffer ,process)
     ,@body))

Richard M. Stallman's avatar
Richard M. Stallman committed
337
(defun rcirc-keepalive ()
338 339 340
  "Send keep alive pings to active rcirc processes.
Kill processes that have not received a server message since the
last ping."
Richard M. Stallman's avatar
Richard M. Stallman committed
341 342
  (if (rcirc-process-list)
      (mapc (lambda (process)
343
              (with-rcirc-process-buffer process
344 345 346 347
		(if (> (cadr (time-since rcirc-last-server-message-time))
		       rcirc-keepalive-seconds)
		    (kill-process process)
		  (rcirc-send-string process (concat "PING " rcirc-server)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
348 349 350 351
            (rcirc-process-list))
    (cancel-timer rcirc-keepalive-timer)
    (setq rcirc-keepalive-timer nil)))

352 353 354 355
(defvar rcirc-debug-buffer " *rcirc debug*")
(defvar rcirc-debug-flag nil
  "If non-nil, write information to `rcirc-debug-buffer'.")
(defun rcirc-debug (process text)
Richard M. Stallman's avatar
Richard M. Stallman committed
356
  "Add an entry to the debug log including PROCESS and TEXT.
357
Debug text is written to `rcirc-debug-buffer' if `rcirc-debug-flag'
358 359
is non-nil."
  (when rcirc-debug-flag
Richard M. Stallman's avatar
Richard M. Stallman committed
360 361
    (save-excursion
      (save-window-excursion
362
        (set-buffer (get-buffer-create rcirc-debug-buffer))
Richard M. Stallman's avatar
Richard M. Stallman committed
363 364 365 366 367 368
        (goto-char (point-max))
        (insert (concat
                 "["
                 (format-time-string "%Y-%m-%dT%T ") (process-name process)
                 "] "
                 text))))))
369

Richard M. Stallman's avatar
Richard M. Stallman committed
370 371 372 373 374 375 376
(defvar rcirc-sentinel-hooks nil
  "Hook functions called when the process sentinel is called.
Functions are called with PROCESS and SENTINEL arguments.")

(defun rcirc-sentinel (process sentinel)
  "Called when PROCESS receives SENTINEL."
  (let ((sentinel (replace-regexp-in-string "\n" "" sentinel)))
377 378 379 380
    (rcirc-debug process (format "SENTINEL: %S %S\n" process sentinel))
    (with-rcirc-process-buffer process
      (dolist (buffer (cons nil (mapcar 'cdr rcirc-buffer-alist)))
        (rcirc-print process "rcirc.el" "ERROR" buffer
Richard M. Stallman's avatar
Richard M. Stallman committed
381 382 383 384 385
                     (format "%s: %s (%S)"
                             (process-name process)
                             sentinel
                             (process-status process)) t)
	;; remove the prompt from buffers
386
	(with-current-buffer (or buffer (current-buffer))
Richard M. Stallman's avatar
Richard M. Stallman committed
387 388 389 390 391 392 393 394 395 396
	  (let ((inhibit-read-only t))
	    (delete-region rcirc-prompt-start-marker
			   rcirc-prompt-end-marker)))))
    (run-hook-with-args 'rcirc-sentinel-hooks process sentinel)))

(defun rcirc-process-list ()
  "Return a list of rcirc processes."
  (let (ps)
    (mapc (lambda (p)
            (when (process-buffer p)
397
              (with-rcirc-process-buffer p
Richard M. Stallman's avatar
Richard M. Stallman committed
398 399 400 401 402 403
                (when (eq major-mode 'rcirc-mode)
                  (setq ps (cons p ps))))))
          (process-list))
    ps))

(defvar rcirc-receive-message-hooks nil
404 405
  "Hook functions run when a message is received from server.
Function is called with PROCESS, COMMAND, SENDER, ARGS and LINE.")
Richard M. Stallman's avatar
Richard M. Stallman committed
406 407
(defun rcirc-filter (process output)
  "Called when PROCESS receives OUTPUT."
408 409
  (rcirc-debug process output)
  (with-rcirc-process-buffer process
410
    (setq rcirc-last-server-message-time (current-time))
Richard M. Stallman's avatar
Richard M. Stallman committed
411 412 413 414 415
    (setq rcirc-process-output (concat rcirc-process-output output))
    (when (= (aref rcirc-process-output
                   (1- (length rcirc-process-output))) ?\n)
      (mapc (lambda (line)
              (rcirc-process-server-response process line))
416
            (split-string rcirc-process-output "[\n\r]" t))
Richard M. Stallman's avatar
Richard M. Stallman committed
417 418
      (setq rcirc-process-output nil))))

419
(defvar rcirc-trap-errors-flag t)
Richard M. Stallman's avatar
Richard M. Stallman committed
420
(defun rcirc-process-server-response (process text)
421
  (if rcirc-trap-errors-flag
Richard M. Stallman's avatar
Richard M. Stallman committed
422 423 424 425
      (condition-case err
          (rcirc-process-server-response-1 process text)
        (error
         (rcirc-print process "RCIRC" "ERROR" nil
426
                      (format "\"%s\" %s" text err) t)))
Richard M. Stallman's avatar
Richard M. Stallman committed
427 428 429 430 431 432 433 434 435 436 437
    (rcirc-process-server-response-1 process text)))

(defun rcirc-process-server-response-1 (process text)
  (if (string-match "^\\(:\\([^ ]+\\) \\)?\\([^ ]+\\) \\(.+\\)$" text)
      (let* ((sender (match-string 2 text))
             (cmd (match-string 3 text))
             (args (match-string 4 text))
             (handler (intern-soft (concat "rcirc-handler-" cmd))))
        (string-match "^\\([^:]*\\):?\\(.+\\)?$" args)
        (let* ((args1 (match-string 1 args))
               (args2 (match-string 2 args))
438 439
               (args (delq nil (append (split-string args1 " " t)
				       (list args2)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
440 441 442 443 444 445 446 447 448 449
        (if (not (fboundp handler))
            (rcirc-handler-generic process cmd sender args text)
          (funcall handler process sender args text))
        (run-hook-with-args 'rcirc-receive-message-hooks
                            process cmd sender args text)))
    (message "UNHANDLED: %s" text)))

(defun rcirc-handler-generic (process command sender args text)
  "Generic server response handler."
  (rcirc-print process sender command nil
450
               (mapconcat 'identity (cdr args) " ") t))
Richard M. Stallman's avatar
Richard M. Stallman committed
451 452 453 454 455 456

(defun rcirc-send-string (process string)
  "Send PROCESS a STRING plus a newline."
  (let ((string (concat (encode-coding-string string
                                              buffer-file-coding-system)
                        "\n")))
457 458 459
    (unless (eq (process-status rcirc-process) 'open)
      (error "Network connection to %s is not open"
             (process-name rcirc-process)))
460
    (rcirc-debug process string)
Richard M. Stallman's avatar
Richard M. Stallman committed
461 462 463 464
    (process-send-string process string)))

(defun rcirc-server (process)
  "Return PROCESS server, given by the 001 response."
465
  (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
466 467 468 469
    rcirc-server))

(defun rcirc-nick (process)
  "Return PROCESS nick."
470
  (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489
    rcirc-nick))

(defvar rcirc-max-message-length 450
  "Messages longer than this value will be split.")

(defun rcirc-send-message (process target message &optional noticep)
  "Send TARGET associated with PROCESS a privmsg with text MESSAGE.
If NOTICEP is non-nil, send a notice instead of privmsg."
  ;; max message length is 512 including CRLF
  (let* ((response (if noticep "NOTICE" "PRIVMSG"))
         (oversize (> (length message) rcirc-max-message-length))
         (text (if oversize
                   (substring message 0 rcirc-max-message-length)
                 message))
         (text (if (string= text "")
                   " "
                 text))
         (more (if oversize
                   (substring message rcirc-max-message-length))))
490 491 492
    (rcirc-print process (rcirc-nick process) response
		 (rcirc-get-buffer-create process target)
		 text)
Richard M. Stallman's avatar
Richard M. Stallman committed
493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532
    (rcirc-send-string process (concat response " " target " :" text))
    (if more
        (rcirc-send-message process target more noticep))))

(defvar rcirc-input-ring nil)
(defvar rcirc-input-ring-index 0)
(defun rcirc-prev-input-string (arg)
  (ring-ref rcirc-input-ring (+ rcirc-input-ring-index arg)))

(defun rcirc-insert-prev-input (arg)
  (interactive "p")
  (when (<= rcirc-prompt-end-marker (point))
    (delete-region rcirc-prompt-end-marker (point-max))
    (insert (rcirc-prev-input-string 0))
    (setq rcirc-input-ring-index (1+ rcirc-input-ring-index))))

(defun rcirc-insert-next-input (arg)
  (interactive "p")
  (when (<= rcirc-prompt-end-marker (point))
    (delete-region rcirc-prompt-end-marker (point-max))
    (setq rcirc-input-ring-index (1- rcirc-input-ring-index))
    (insert (rcirc-prev-input-string -1))))

(defvar rcirc-nick-completions nil)
(defvar rcirc-nick-completion-start-offset nil)
(defun rcirc-complete-nick ()
  "Cycle through nick completions from list of nicks in channel."
  (interactive)
  (if (eq last-command 'rcirc-complete-nick)
      (setq rcirc-nick-completions
            (append (cdr rcirc-nick-completions)
                    (list (car rcirc-nick-completions))))
    (setq rcirc-nick-completion-start-offset
          (- (save-excursion
               (if (re-search-backward " " rcirc-prompt-end-marker t)
                   (1+ (point))
                 rcirc-prompt-end-marker))
             rcirc-prompt-end-marker))
    (setq rcirc-nick-completions
          (let ((completion-ignore-case t))
533 534
            (all-completions
	     (buffer-substring
Richard M. Stallman's avatar
Richard M. Stallman committed
535 536 537 538 539 540 541 542
	      (+ rcirc-prompt-end-marker
		 rcirc-nick-completion-start-offset)
	      (point))
	     (mapcar (lambda (x) (cons x nil))
		     (rcirc-channel-nicks rcirc-process
					  (rcirc-buffer-target)))))))
  (let ((completion (car rcirc-nick-completions)))
    (when completion
543
      (delete-region (+ rcirc-prompt-end-marker
Richard M. Stallman's avatar
Richard M. Stallman committed
544 545 546
                        rcirc-nick-completion-start-offset)
                     (point))
      (insert (concat completion
547
                      (if (= (+ rcirc-prompt-end-marker
Richard M. Stallman's avatar
Richard M. Stallman committed
548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580
                                rcirc-nick-completion-start-offset)
                             rcirc-prompt-end-marker)
                          ": "))))))

(defun rcirc-buffer-target (&optional buffer)
  "Return the name of target for BUFFER.
If buffer is nil, return the target of the current buffer."
  (with-current-buffer (or buffer (current-buffer))
    rcirc-target))

(defvar rcirc-mode-map (make-sparse-keymap)
  "Keymap for rcirc mode.")

(define-key rcirc-mode-map (kbd "RET") 'rcirc-send-input)
(define-key rcirc-mode-map (kbd "M-p") 'rcirc-insert-prev-input)
(define-key rcirc-mode-map (kbd "M-n") 'rcirc-insert-next-input)
(define-key rcirc-mode-map (kbd "TAB") 'rcirc-complete-nick)
(define-key rcirc-mode-map (kbd "C-c C-b") 'rcirc-browse-url)
(define-key rcirc-mode-map (kbd "C-c C-c") 'rcirc-edit-multiline)
(define-key rcirc-mode-map (kbd "C-c C-j") 'rcirc-cmd-join)
(define-key rcirc-mode-map (kbd "C-c C-k") 'rcirc-cmd-kick)
(define-key rcirc-mode-map (kbd "C-c C-l") 'rcirc-cmd-list)
(define-key rcirc-mode-map (kbd "C-c C-d") 'rcirc-cmd-mode)
(define-key rcirc-mode-map (kbd "C-c C-m") 'rcirc-cmd-msg)
(define-key rcirc-mode-map (kbd "C-c C-r") 'rcirc-cmd-nick) ; rename
(define-key rcirc-mode-map (kbd "C-c C-o") 'rcirc-cmd-oper)
(define-key rcirc-mode-map (kbd "C-c C-p") 'rcirc-cmd-part)
(define-key rcirc-mode-map (kbd "C-c C-q") 'rcirc-cmd-query)
(define-key rcirc-mode-map (kbd "C-c C-t") 'rcirc-cmd-topic)
(define-key rcirc-mode-map (kbd "C-c C-n") 'rcirc-cmd-names)
(define-key rcirc-mode-map (kbd "C-c C-w") 'rcirc-cmd-whois)
(define-key rcirc-mode-map (kbd "C-c C-x") 'rcirc-cmd-quit)
(define-key rcirc-mode-map (kbd "C-c TAB") ; C-i
581
  'rcirc-toggle-ignore-buffer-activity)
Richard M. Stallman's avatar
Richard M. Stallman committed
582 583 584 585 586 587 588
(define-key rcirc-mode-map (kbd "C-c C-s") 'rcirc-switch-to-server-buffer)
(define-key rcirc-mode-map (kbd "C-c C-a") 'rcirc-jump-to-first-unread-line)

(define-key global-map (kbd "C-c `") 'rcirc-next-active-buffer)
(define-key global-map (kbd "C-c C-@") 'rcirc-next-active-buffer)
(define-key global-map (kbd "C-c C-SPC") 'rcirc-next-active-buffer)

589
(defvar rcirc-browse-url-map (make-sparse-keymap)
590
  "Keymap used for browsing URLs in `rcirc-mode'.")
591 592 593 594 595 596 597

(define-key rcirc-browse-url-map (kbd "RET") 'rcirc-browse-url-at-point)
(define-key rcirc-browse-url-map (kbd "<mouse-2>") 'rcirc-browse-url-at-mouse)

(defvar rcirc-short-buffer-name nil
  "Generated abbreviation to use to indicate buffer activity.")

Richard M. Stallman's avatar
Richard M. Stallman committed
598 599 600 601
(defvar rcirc-mode-hook nil
  "Hook run when setting up rcirc buffer.")

(defun rcirc-mode (process target)
602
  "Major mode for IRC channel buffers.
Richard M. Stallman's avatar
Richard M. Stallman committed
603 604 605 606 607 608 609 610 611 612 613 614 615

\\{rcirc-mode-map}"
  (kill-all-local-variables)
  (use-local-map rcirc-mode-map)
  (setq mode-name "rcirc")
  (setq major-mode 'rcirc-mode)

  (make-local-variable 'rcirc-input-ring)
  (setq rcirc-input-ring (make-ring rcirc-input-ring-size))
  (make-local-variable 'rcirc-process)
  (setq rcirc-process process)
  (make-local-variable 'rcirc-target)
  (setq rcirc-target target)
616 617
  (make-local-variable 'rcirc-topic)
  (setq rcirc-topic nil)
618 619 620

  (make-local-variable 'rcirc-short-buffer-name)
  (setq rcirc-short-buffer-name nil)
Richard M. Stallman's avatar
Richard M. Stallman committed
621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637
  (make-local-variable 'rcirc-urls)
  (setq rcirc-urls nil)
  (setq use-hard-newlines t)

  ;; setup the prompt and markers
  (make-local-variable 'rcirc-prompt-start-marker)
  (setq rcirc-prompt-start-marker (make-marker))
  (set-marker rcirc-prompt-start-marker (point-max))
  (make-local-variable 'rcirc-prompt-end-marker)
  (setq rcirc-prompt-end-marker (make-marker))
  (set-marker rcirc-prompt-end-marker (point-max))
  (rcirc-update-prompt)
  (goto-char rcirc-prompt-end-marker)
  (make-local-variable 'overlay-arrow-position)
  (setq overlay-arrow-position (make-marker))
  (set-marker overlay-arrow-position nil)

638 639 640 641 642 643 644 645
  ;; add to buffer list, and update buffer abbrevs
  (when target				; skip server buffer
    (let ((buffer (current-buffer)))
      (with-rcirc-process-buffer process
	(setq rcirc-buffer-alist (cons (cons target buffer)
				       rcirc-buffer-alist))))
    (rcirc-update-short-buffer-names))

Richard M. Stallman's avatar
Richard M. Stallman committed
646 647
  (run-hooks 'rcirc-mode-hook))

648 649
(defun rcirc-update-prompt (&optional all)
  "Reset the prompt string in the current buffer.
650

651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690
If ALL is non-nil, update prompts in all IRC buffers."
  (if all
      (mapc (lambda (process)
	      (mapc (lambda (buffer)
		      (with-current-buffer buffer
			(rcirc-update-prompt)))
		    (with-rcirc-process-buffer process
		      (mapcar 'cdr rcirc-buffer-alist))))
	    (rcirc-process-list))
    (let ((inhibit-read-only t)
	  (prompt (or rcirc-prompt "")))
      (mapc (lambda (rep)
	      (setq prompt
		    (replace-regexp-in-string (car rep) (regexp-quote (cdr rep)) prompt)))
	    (list (cons "%n" (with-rcirc-process-buffer rcirc-process
			       rcirc-nick))
		  (cons "%s" (with-rcirc-process-buffer rcirc-process
			       rcirc-server))
		  (cons "%t" (or rcirc-target ""))))
      (save-excursion
	(delete-region rcirc-prompt-start-marker rcirc-prompt-end-marker)
	(goto-char rcirc-prompt-start-marker)
	(let ((start (point)))
	  (insert-before-markers prompt)
	  (set-marker rcirc-prompt-start-marker start)
	  (when (not (zerop (- rcirc-prompt-end-marker
			       rcirc-prompt-start-marker)))
	    (add-text-properties rcirc-prompt-start-marker
				 rcirc-prompt-end-marker
				 (list 'face 'rcirc-prompt
				       'read-only t 'field t
				       'front-sticky t 'rear-nonsticky t))))))))

(defun rcirc-set-changed (option value)
  "Set OPTION to VALUE and do updates after a customization change."
  (set-default option value)
  (cond ((eq option 'rcirc-prompt)
	 (rcirc-update-prompt 'all))
	(t
	 (error "Bad option %s" option))))
Richard M. Stallman's avatar
Richard M. Stallman committed
691 692 693 694 695 696 697 698 699 700 701

(defun rcirc-channel-p (target)
  "Return t if TARGET is a channel name."
  (and target
       (not (zerop (length target)))
       (or (eq (aref target 0) ?#)
           (eq (aref target 0) ?&))))

(defun rcirc-kill-buffer-hook ()
  "Part the channel when killing an rcirc buffer."
  (when (eq major-mode 'rcirc-mode)
702 703 704 705
    (rcirc-kill-buffer-hook-1)))
(defun rcirc-kill-buffer-hook-1 ()
  (let ((buffer (current-buffer)))
    (rcirc-clear-activity buffer)
Richard M. Stallman's avatar
Richard M. Stallman committed
706
    (when (and rcirc-process
707 708 709 710 711
	       (eq (process-status rcirc-process) 'open))
      (with-rcirc-process-buffer rcirc-process
	(setq rcirc-buffer-alist
	      (rassq-delete-all buffer rcirc-buffer-alist)))
      (rcirc-update-short-buffer-names)
Richard M. Stallman's avatar
Richard M. Stallman committed
712
      (if (rcirc-channel-p rcirc-target)
713 714 715 716 717 718 719 720
	  (rcirc-send-string rcirc-process
			     (concat "PART " rcirc-target
				     " :Killed buffer"))
	(when rcirc-target
	  (rcirc-remove-nick-channel rcirc-process
				     (rcirc-nick rcirc-process)
				     rcirc-target))))))

Richard M. Stallman's avatar
Richard M. Stallman committed
721 722
(add-hook 'kill-buffer-hook 'rcirc-kill-buffer-hook)

723 724
(defun rcirc-generate-new-buffer-name (process target)
  "Return a buffer name based on PROCESS and TARGET.
725
This is used for the initial name given to IRC buffers."
726 727 728
  (if target
      (concat target "@" (process-name process))
    (concat "*" (process-name process) "*")))
Richard M. Stallman's avatar
Richard M. Stallman committed
729

730
(defun rcirc-get-buffer (process target &optional server)
Richard M. Stallman's avatar
Richard M. Stallman committed
731
  "Return the buffer associated with the PROCESS and TARGET.
732 733 734 735 736 737 738 739 740 741

If TARGET is nil, return the server buffer.

If optional argument SERVER is non-nil, return the server buffer
if there is no existing buffer for TARGET, otherwise return nil."
  (with-rcirc-process-buffer process
    (if (null target)
	(current-buffer)
      (let ((buffer (cdr (assoc-string target rcirc-buffer-alist t))))
	(or buffer (when server (current-buffer)))))))
Richard M. Stallman's avatar
Richard M. Stallman committed
742 743

(defun rcirc-get-buffer-create (process target)
744 745 746 747 748 749 750 751 752 753 754 755
  "Return the buffer associated with the PROCESS and TARGET.
Create the buffer if it doesn't exist."
  (let ((buffer (rcirc-get-buffer process target)))
    (or buffer
	;; create the buffer
	(with-rcirc-process-buffer process
	  (let ((new-buffer (get-buffer-create
			     (rcirc-generate-new-buffer-name process target))))
	    (with-current-buffer new-buffer
	      (rcirc-mode process target))
	    (rcirc-put-nick-channel process (rcirc-nick process) target)
	    new-buffer)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
756 757 758 759

(defun rcirc-send-input ()
  "Send input to target associated with the current buffer."
  (interactive)
760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812
  (if (< (point) rcirc-prompt-end-marker)
      ;; copy the line down to the input area
      (progn
	(forward-line 0)
	(let ((start (if (eq (point) (point-min))
			 (point)
		       (if (get-text-property (1- (point)) 'hard)
			   (point)
			 (previous-single-property-change (point) 'hard))))
	      (end (next-single-property-change (1+ (point)) 'hard)))
	  (goto-char (point-max))
	  (insert (replace-regexp-in-string
		   "\n\\s-+" " "
		   (buffer-substring-no-properties start end)))))
    ;; process input
    (goto-char (point-max))
    (let ((target (rcirc-buffer-target))
	  (start rcirc-prompt-end-marker))
      (when (not (equal 0 (- (point) start)))
	;; delete a trailing newline
	(when (eq (point) (point-at-bol))
	  (delete-backward-char 1))
	(let ((input (buffer-substring-no-properties
		      rcirc-prompt-end-marker (point))))
	  ;; process a /cmd
	  (if (string-match "^/\\([^ ]+\\) ?\\(.*\\)$" input)
	      (let* ((command (match-string 1 input))
		     (fun (intern-soft (concat "rcirc-cmd-" command)))
		     (args (match-string 2 input)))
		(newline)
		(with-current-buffer (current-buffer)
		  (delete-region rcirc-prompt-end-marker (point))
		  (if (string= command "me")
		      (rcirc-print rcirc-process (rcirc-nick rcirc-process)
				   "ACTION" (current-buffer) args)
		    (rcirc-print rcirc-process (rcirc-nick rcirc-process)
				 "COMMAND" (current-buffer) input))
		  (set-marker rcirc-prompt-end-marker (point))
		  (if (fboundp fun)
		      (funcall fun args rcirc-process target)
		    (rcirc-send-string rcirc-process
				       (concat command " " args)))))
	    ;; send message to server
	    (if (not rcirc-target)
		(message "Not joined")
	      (delete-region rcirc-prompt-end-marker (point))
	      (mapc (lambda (message)
		      (rcirc-send-message rcirc-process target message))
		    (split-string input "\n"))))
	  ;; add to input-ring
	  (save-excursion
	    (ring-insert rcirc-input-ring input)
	    (setq rcirc-input-ring-index 0)))))))
Richard M. Stallman's avatar
Richard M. Stallman committed
813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853

(defvar rcirc-parent-buffer nil)
(defvar rcirc-window-configuration nil)
(defun rcirc-edit-multiline ()
  "Move current edit to a dedicated buffer."
  (interactive)
  (let ((pos (1+ (- (point) rcirc-prompt-end-marker))))
    (goto-char (point-max))
    (let ((text (buffer-substring rcirc-prompt-end-marker (point)))
          (parent (buffer-name))
          (process rcirc-process))
      (delete-region rcirc-prompt-end-marker (point))
      (setq rcirc-window-configuration (current-window-configuration))
      (pop-to-buffer (concat "*multiline " parent "*"))
      (rcirc-multiline-edit-mode)
      (setq rcirc-parent-buffer parent)
      (setq rcirc-process process)
      (insert text)
      (and (> pos 0) (goto-char pos)))))

(define-derived-mode rcirc-multiline-edit-mode
  text-mode "rcirc multi"
  "Major mode for multiline edits
\\{rcirc-multiline-edit-mode-map}"
  (make-local-variable 'rcirc-parent-buffer)
  (make-local-variable 'rcirc-process))

(define-key rcirc-multiline-edit-mode-map
  (kbd "C-c C-c") 'rcirc-multiline-edit-submit)
(define-key rcirc-multiline-edit-mode-map
  (kbd "C-x C-s") 'rcirc-multiline-edit-submit)
(define-key rcirc-multiline-edit-mode-map
  (kbd "C-c C-k") 'rcirc-multiline-edit-cancel)
(define-key rcirc-multiline-edit-mode-map
  (kbd "ESC ESC ESC") 'rcirc-multiline-edit-cancel)

(defun rcirc-multiline-edit-submit ()
  "Send the text in buffer back to parent buffer."
  (interactive)
  (assert (and (eq major-mode 'rcirc-multiline-edit-mode)))
  (assert rcirc-parent-buffer)
854
  (untabify (point-min) (point-max))
Richard M. Stallman's avatar
Richard M. Stallman committed
855 856 857 858 859 860 861
  (let ((text (buffer-substring (point-min) (point-max)))
        (buffer (current-buffer))
        (pos (point)))
    (set-buffer rcirc-parent-buffer)
    (goto-char (point-max))
    (insert text)
    (kill-buffer buffer)
862 863
    (set-window-configuration rcirc-window-configuration)
    (goto-char (+ rcirc-prompt-end-marker (1- pos)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
864 865 866 867 868 869 870 871

(defun rcirc-multiline-edit-cancel ()
  "Cancel the multiline edit."
  (interactive)
  (assert (and (eq major-mode 'rcirc-multiline-edit-mode)))
  (kill-buffer (current-buffer))
  (set-window-configuration rcirc-window-configuration))

872 873 874 875 876 877 878 879 880
(defun rcirc-get-any-buffer (process)
  "Return a buffer for PROCESS, either the one selected or the process buffer."
  (let ((buffer (window-buffer (selected-window))))
    (if (and buffer
	     (with-current-buffer buffer
	       (and (eq major-mode 'rcirc-mode)
		    (eq rcirc-process process))))
	buffer
      (process-buffer process))))
Richard M. Stallman's avatar
Richard M. Stallman committed
881 882

(defun rcirc-format-response-string (process sender response target text)
883 884
  (concat (rcirc-facify (format-time-string rcirc-time-format (current-time))
			'rcirc-timestamp)
Richard M. Stallman's avatar
Richard M. Stallman committed
885 886 887 888 889 890 891
          (cond ((or (string= response "PRIVMSG")
                     (string= response "NOTICE")
                     (string= response "ACTION"))
                 (let (first middle end)
                   (cond ((string= response "PRIVMSG")
                          (setq first "<" middle "> "))
                         ((string= response "NOTICE")
892 893
			  (when sender
			    (setq first "-" middle "- ")))
Richard M. Stallman's avatar
Richard M. Stallman committed
894 895
                         (t
                          (setq first "[" middle " " end "]")))
896
                   (concat first
Richard M. Stallman's avatar
Richard M. Stallman committed
897 898 899
                           (rcirc-facify (rcirc-user-nick sender)
                                         (if (string= sender
                                                      (rcirc-nick process))
900 901
                                             'rcirc-my-nick
                                           'rcirc-other-nick))
Richard M. Stallman's avatar
Richard M. Stallman committed
902 903 904 905 906 907
                           middle
                           (rcirc-mangle-text process text)
                           end)))
                ((string= response "COMMAND")
                 text)
                ((string= response "ERROR")
908 909
                 (propertize (concat "!!! " text)
			     'face 'font-lock-warning-face))
Richard M. Stallman's avatar
Richard M. Stallman committed
910 911 912
                (t
                 (rcirc-mangle-text
                  process
913 914 915 916 917 918 919 920 921
		  (concat (rcirc-facify "*** " 'rcirc-server-prefix)
			  (rcirc-facify
			   (concat
			    (when (not (string= sender (rcirc-server process)))
			      (concat (rcirc-user-nick sender) " "))
			    (when (zerop (string-to-number response))
			      (concat response " "))
			    text)
			   'rcirc-server)))))))
Richard M. Stallman's avatar
Richard M. Stallman committed
922 923 924 925 926 927 928

(defvar rcirc-activity-type nil)
(make-variable-buffer-local 'rcirc-activity-type)
(defun rcirc-print (process sender response target text &optional activity)
  "Print TEXT in the buffer associated with TARGET.
Format based on SENDER and RESPONSE.  If ACTIVITY is non-nil,
record activity."
929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987
  (unless (or (member (rcirc-user-nick sender) rcirc-ignore-list)
	      (member (with-syntax-table rcirc-nick-syntax-table
			(when (string-match "^\\([^/]\\w*\\)[:,]" text)
			  (match-string 1 text))) rcirc-ignore-list))
    (let* ((buffer (cond ((bufferp target)
			  target)
			 ((not target)
			  (rcirc-get-any-buffer process))
			 ((not (rcirc-channel-p target))
			  (rcirc-get-buffer-create process
						   (rcirc-user-nick sender)))
			 ((or (rcirc-get-buffer process target)
			      (rcirc-get-any-buffer process)))))
	   (inhibit-read-only t))
      (with-current-buffer buffer
	(let ((moving (= (point) rcirc-prompt-end-marker))
	      (old-point (point-marker))
	      (fill-start (marker-position rcirc-prompt-start-marker)))

	  (unless (string= sender (rcirc-nick process))
	    ;; only decode text from other senders, not ours
	    (setq text (decode-coding-string (or text "")
					     buffer-file-coding-system))
	    ;; mark the line with overlay arrow
	    (unless (or (marker-position overlay-arrow-position)
			(get-buffer-window (current-buffer)))
	      (set-marker overlay-arrow-position
			  (marker-position rcirc-prompt-start-marker))))

	  ;; temporarily set the marker insertion-type because
	  ;; insert-before-markers results in hidden text in new buffers
	  (goto-char rcirc-prompt-start-marker)
	  (set-marker-insertion-type rcirc-prompt-start-marker t)
	  (set-marker-insertion-type rcirc-prompt-end-marker t)
	  (insert
	   (rcirc-format-response-string process sender response target text)
	   (propertize "\n" 'hard t))
	  (set-marker-insertion-type rcirc-prompt-start-marker nil)
	  (set-marker-insertion-type rcirc-prompt-end-marker nil)

	  ;; fill the text we just inserted, maybe
	  (when (and rcirc-fill-flag
		     (not (string= response "372"))) ;/motd
	    (let ((fill-prefix
		   (or rcirc-fill-prefix
		       (make-string
			(+ (if rcirc-time-format
			       (length (format-time-string
					rcirc-time-format))
			     0)
			   (cond ((or (string= response "PRIVMSG")
				      (string= response "NOTICE"))
				  (+ (length (rcirc-user-nick sender))
				     2)) ; <>
				 ((string= response "ACTION")
				  (+ (length (rcirc-user-nick sender))
				     1))	; [
				 (t 3))		; ***
			   1)
988
			?\s)))
989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046
		  (fill-column (cond ((eq rcirc-fill-column 'frame-width)
				      (1- (frame-width)))
				     (rcirc-fill-column
				      rcirc-fill-column)
				     (t fill-column))))
	      (fill-region fill-start rcirc-prompt-start-marker 'left t)))

	  ;; set inserted text to be read-only
	  (when rcirc-read-only-flag
	    (put-text-property rcirc-prompt-start-marker fill-start 'read-only t)
	    (let ((inhibit-read-only t))
	      (put-text-property rcirc-prompt-start-marker fill-start
				 'front-sticky t)
	      (put-text-property (1- (point)) (point) 'rear-nonsticky t)))

	  ;; truncate buffer if it is very long
	  (save-excursion
	    (when (and rcirc-buffer-maximum-lines
		       (> rcirc-buffer-maximum-lines 0)
		       (= (forward-line (- rcirc-buffer-maximum-lines)) 0))
	      (delete-region (point-min) (point))))

	  ;; set the window point for buffers show in windows
	  (walk-windows (lambda (w)
			  (unless (eq (selected-window) w)
			    (when (and (eq (current-buffer)
					   (window-buffer w))
				       (>= (window-point w)
					   rcirc-prompt-end-marker))
			      (set-window-point w (point-max)))))
			nil t)

	  ;; restore the point
	  (goto-char (if moving rcirc-prompt-end-marker old-point))

	  ;; flush undo (can we do something smarter here?)
	  (buffer-disable-undo)
	  (buffer-enable-undo))

	;; record modeline activity
	(when activity
	  (let ((nick-match
		 (string-match (concat "\\b"
				       (regexp-quote (rcirc-nick process))
				       "\\b")
			       text)))
	    (when (or (not rcirc-ignore-buffer-activity-flag)
		      ;; always notice when our nick is mentioned, even
		      ;; if ignoring channel activity
		      nick-match)
	      (rcirc-record-activity
	       (current-buffer)
	       (when (or nick-match (not (rcirc-channel-p rcirc-target)))
		 'nick)))))

	(sit-for 0)			; displayed text before hook
	(run-hook-with-args 'rcirc-print-hooks
			    process sender response target text)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1047 1048

(defun rcirc-startup-channels (server)
1049
  "Return the list of startup channels for SERVER."
Richard M. Stallman's avatar
Richard M. Stallman committed
1050 1051 1052 1053 1054 1055 1056 1057 1058 1059
  (let (channels)
    (dolist (i rcirc-startup-channels-alist)
      (if (string-match (car i) server)
          (setq channels (append channels (cdr i)))))
    channels))

(defun rcirc-join-channels (process channels)
  "Join CHANNELS."
  (save-window-excursion
    (mapc (lambda (channel)
1060
            (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079
              (rcirc-cmd-join channel process)))
          channels)))

;;; nick management
(defun rcirc-user-nick (user)
  "Return the nick from USER.  Remove any non-nick junk."
  (if (string-match "^[@%+]?\\([^! ]+\\)!?" (or user ""))
      (match-string 1 user)
    user))

(defun rcirc-user-non-nick (user)
  "Return the non-nick portion of USER."
  (if (string-match "^[@+]?[^! ]+!?\\(.*\\)" (or user ""))
      (match-string 1 user)
    user))

(defun rcirc-nick-channels (process nick)
  "Return list of channels for NICK."
  (let ((nick (rcirc-user-nick nick)))
1080
    (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
1081 1082 1083 1084 1085
      (mapcar (lambda (x) (car x))
              (gethash nick rcirc-nick-table)))))

(defun rcirc-put-nick-channel (process nick channel)
  "Add CHANNEL to list associated with NICK."
1086
  (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
1087 1088
    (let* ((nick (rcirc-user-nick nick))
           (chans (gethash nick rcirc-nick-table))
1089
           (record (assoc-string channel chans t)))
Richard M. Stallman's avatar
Richard M. Stallman committed
1090 1091 1092 1093 1094 1095 1096 1097
      (if record
          (setcdr record (current-time))
        (puthash nick (cons (cons channel (current-time))
                            chans)
                 rcirc-nick-table)))))

(defun rcirc-nick-remove (process nick)
  "Remove NICK from table."
1098
  (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
1099 1100 1101 1102
    (remhash nick rcirc-nick-table)))

(defun rcirc-remove-nick-channel (process nick channel)
  "Remove the CHANNEL from list associated with NICK."
1103
  (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
1104 1105
    (let* ((nick (rcirc-user-nick nick))
           (chans (gethash nick rcirc-nick-table))
1106 1107 1108 1109 1110 1111
           (newchans
	    ;; instead of assoc-string-delete-all:
	    (let ((record (assoc-string channel chans t)))
	      (when record
		(setcar record 'delete)
		(assq-delete-all 'delete chans)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1112 1113 1114 1115 1116 1117
      (if newchans
          (puthash nick newchans rcirc-nick-table)
        (remhash nick rcirc-nick-table)))))

(defun rcirc-channel-nicks (process channel)
  "Return the list of nicks in CHANNEL sorted by last activity."
1118
  (with-rcirc-process-buffer process
Richard M. Stallman's avatar
Richard M. Stallman committed
1119 1120 1121
    (let (nicks)
      (maphash
       (lambda (k v)
1122
         (let ((record (assoc-string channel v t)))
Richard M. Stallman's avatar
Richard M. Stallman committed
1123 1124 1125 1126 1127
           (if record
               (setq nicks (cons (cons k (cdr record)) nicks)))))
       rcirc-nick-table)
      (mapcar (lambda (x) (car x))
              (sort nicks (lambda (x y) (time-less-p (cdr y) (cdr x))))))))
1128 1129

(defun rcirc-ignore-update-automatic (nick)
1130 1131
  "Remove NICK from `rcirc-ignore-list'
if NICK is also on `rcirc-ignore-list-automatic'."
1132 1133 1134 1135 1136
  (when (member nick rcirc-ignore-list-automatic)
      (setq rcirc-ignore-list-automatic
	    (delete nick rcirc-ignore-list-automatic)
	    rcirc-ignore-list
	    (delete nick rcirc-ignore-list))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1137 1138

;;; activity tracking
1139
(or (assq 'rcirc-ignore-buffer-activity-flag minor-mode-alist)
Richard M. Stallman's avatar
Richard M. Stallman committed
1140
    (setq minor-mode-alist
1141
          (cons '(rcirc-ignore-buffer-activity-flag " Ignore") minor-mode-alist)))
Richard M. Stallman's avatar
Richard M. Stallman committed
1142

1143 1144
(defun rcirc-toggle-ignore-buffer-activity (&optional all)
  "Toggle the value of `rcirc-ignore-buffer-activity-flag'.
Richard M. Stallman's avatar
Richard M. Stallman committed
1145 1146 1147 1148 1149 1150 1151
If ALL is non-nil, instead toggle the value of
`rcirc-ignore-all-activity-flag'."
  (interactive "P")
  (if all
      (progn
        (setq rcirc-ignore-all-activity-flag
              (not rcirc-ignore-all-activity-flag))
1152 1153 1154
        (message (if rcirc-ignore-all-activity-flag
		     "Hide all buffer activity"
		   "Display buffer activity"))
Richard M. Stallman's avatar
Richard M. Stallman committed
1155
        (rcirc-update-activity-string))
1156 1157 1158 1159 1160
    (setq rcirc-ignore-buffer-activity-flag
          (not rcirc-ignore-buffer-activity-flag))
    (message (if rcirc-ignore-buffer-activity-flag
		 "Ignore activity in this buffer"
	       "Notice activity in this buffer")))
Richard M. Stallman's avatar
Richard M. Stallman committed
1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192
  (force-mode-line-update))

(defvar rcirc-switch-to-buffer-function 'switch-to-buffer
  "Function to use when switching buffers.
Possible values are `switch-to-buffer', `pop-to-buffer', and
`display-buffer'.")

(defun rcirc-switch-to-server-buffer ()
  "Switch to the server buffer associated with current channel buffer."
  (interactive)
  (funcall rcirc-switch-to-buffer-function (process-buffer rcirc-process)))

(defun rcirc-jump-to-first-unread-line ()
  "Move the point to the first unread line in this buffer."
  (interactive)
  (when (marker-position overlay-arrow-position)
    (goto-char overlay-arrow-position)))

(defvar rcirc-last-non-irc-buffer nil
  "The buffer to switch to when there is no more activity.")

(defun rcirc-next-active-buffer (arg)
  "Go to the ARGth rcirc buffer with activity.
The function given by `rcirc-switch-to-buffer-function' is used to
show the buffer."
  (interactive "p")
  (if rcirc-activity
      (progn
        (unless (eq major-mode 'rcirc-mode)
          (setq rcirc-last-non-irc-buffer (current-buffer)))
        (if (and (> arg 0)
                 (<= arg (length rcirc-activity)))
1193
            (funcall rcirc-switch-to-buffer-function
Richard M. Stallman's avatar
Richard M. Stallman committed
1194 1195 1196 1197 1198
		     (nth (1- arg) rcirc-activity))
          (message "Invalid arg: %d" arg)))
    (if (eq major-mode 'rcirc-mode)
        (if (not (and rcirc-last-non-irc-buffer
                      (buffer-live-p rcirc-last-non-irc-buffer)))
1199 1200
            (message "No IRC activity.  Start something.")
	  (message "No more IRC activity.  Go back to work.")
Richard M. Stallman's avatar
Richard M. Stallman committed
1201 1202
          (funcall rcirc-switch-to-buffer-function rcirc-last-non-irc-buffer)
          (setq rcirc-last-non-irc-buffer nil))
1203
      (message "No IRC activity."))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1204 1205 1206 1207 1208 1209

(defvar rcirc-activity-hooks nil
  "Hook to be run when there is channel activity.

Functions are called with a single argument, the buffer with the
activity.  Only run if the buffer is not visible and
1210
`rcirc-ignore-buffer-activity-flag' is non-nil.")
Richard M. Stallman's avatar
Richard M. Stallman committed
1211 1212 1213 1214 1215

(defun rcirc-record-activity (buffer type)
  "Record BUFFER activity with TYPE."
  (with-current-buffer buffer
    (when (not (get-buffer-window (current-buffer) t))
1216
      (add-to-list 'rcirc-activity (current-buffer))
Richard M. Stallman's avatar
Richard M. Stallman committed
1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227
      (if (not rcirc-activity-type)
          (setq rcirc-activity-type type))
      (rcirc-update-activity-string)))
  (run-hook-with-args 'rcirc-activity-hooks buffer))

(defun rcirc-clear-activity (buffer)
  "Clear the BUFFER activity."
  (setq rcirc-activity (delete buffer rcirc-activity))
  (with-current-buffer buffer
    (setq rcirc-activity-type nil)))

1228
;; TODO: add mouse properties
Richard M. Stallman's avatar
Richard M. Stallman committed
1229 1230 1231
(defun rcirc-update-activity-string ()
  "Update mode-line string."
  (setq rcirc-activity-string
1232 1233 1234 1235 1236 1237 1238
	(cond (rcirc-ignore-all-activity-flag
	       " DND")
	      ((not rcirc-activity)
	       "")
	      (t
	       (concat " ["
		       (mapconcat
Richard M. Stallman's avatar
Richard M. Stallman committed
1239 1240 1241 1242 1243
			(lambda (b)
			  (let ((s (rcirc-short-buffer-name b)))
			    (with-current-buffer b
			      (if (not (eq rcirc-activity-type 'nick))
				  s
1244 1245 1246
				(rcirc-facify s 'rcirc-mode-line-nick)))))
			rcirc-activity ",")
		       "]")))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1247 1248 1249 1250

(defun rcirc-short-buffer-name (buffer)
  "Return a short name for BUFFER to use in the modeline indicator."
  (with-current-buffer buffer
1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274
    (or rcirc-short-buffer-name (buffer-name))))

(defvar rcirc-current-buffer nil)
(defun rcirc-window-configuration-change ()
  "Go through visible windows and remove buffers from activity list.
Also, clear the overlay arrow if the current buffer is now hidden."
  (let ((current-now-hidden t))
    (walk-windows (lambda (w)
		    (let ((buf (window-buffer w)))
		      (rcirc-clear-activity buf)
		      (when (eq buf rcirc-current-buffer)
			(setq current-now-hidden nil)))))
    (when (and rcirc-current-buffer current-now-hidden)
      (with-current-buffer rcirc-current-buffer
	(when (eq major-mode 'rcirc-mode)
	  (marker-position overlay-arrow-position)
	  (set-marker overlay-arrow-position nil)))))

  ;; remove any killed buffers from list
  (setq rcirc-activity
	(delq nil (mapcar (lambda (buf) (when (buffer-live-p buf) buf))
			  rcirc-activity)))
  (rcirc-update-activity-string)
  (setq rcirc-current-buffer (current-buffer)))
Richard M. Stallman's avatar
Richard M. Stallman committed
1275 1276


1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331
;;; buffer name abbreviation
(defun rcirc-update-short-buffer-names ()
  (let ((bufalist
	 (apply 'append (mapcar (lambda (process)
				  (with-rcirc-process-buffer process
				    rcirc-buffer-alist))
				(rcirc-process-list)))))
    (dolist (i (rcirc-abbreviate bufalist))
      (with-current-buffer (cdr i)
	(setq rcirc-short-buffer-name (car i))))))

(defun rcirc-abbreviate (pairs)
  (apply 'append (mapcar 'rcirc-rebuild-tree (rcirc-make-trees pairs))))

(defun rcirc-rebuild-tree (tree &optional acc)
  (let ((ch (char-to-string (car tree))))
    (dolist (x (cdr tree))
      (if (listp x)
	  (setq acc (append acc
			   (mapcar (lambda (y)
				     (cons (concat ch (car y))
					   (cdr y)))
				   (rcirc-rebuild-tree x))))
	(setq acc (cons (cons ch x) acc))))
    acc))

(defun rcirc-make-trees (pairs)
  (let (alist)
    (mapc (lambda (pair)
	    (if (consp pair)
		(let* ((str (car pair))
		       (data (cdr pair))
		       (char (unless (zerop (length str))
			       (aref str 0)))
		       (rest (unless (zerop (length str))
			       (substring str 1)))
		       (part (if char (assq char alist))))
		  (if part
		      ;; existing partition
		      (setcdr part (cons (cons rest data) (cdr part)))
		    ;; new partition
		    (setq alist (cons (if char
					  (list char (cons rest data))
					data)
				      alist))))
	      (setq alist (cons pair alist))))
	  pairs)
    ;; recurse into cdrs of alist
    (mapc (lambda (x)
	    (when (and (listp x) (listp (cadr x)))
	      (setcdr x (if (> (length (cdr x)) 1)
			    (rcirc-make-trees (cdr x))
			  (setcdr x (list (cdadr x)))))))
	  alist)))

Richard M. Stallman's avatar
Richard M. Stallman committed
1332 1333 1334 1335
;;; /commands these are called with 3 args: PROCESS, TARGET, which is
;; the current buffer/channel/user, and ARGS, which is a string
;; containing the text following the /cmd.

1336
(defmacro defun-rcirc-command (command argument docstring interactive-form
Richard M. Stallman's avatar
Richard M. Stallman committed
1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354
                                       &rest body)
  "Define a command."
  `(defun ,(intern (concat "rcirc-cmd-" (symbol-name command)))
     (,@argument &optional process target)
     ,(concat docstring "\n\nNote: If PROCESS or TARGET are nil, the values of"
              "\nbuffer local variables `rcirc-process' and `rcirc-target',"
              "\nwill be used.")
     ,interactive-form
     (let ((process (or process rcirc-process))
           (target (or target rcirc-target)))
       ,@body)))

(defun-rcirc-command msg (message)
  "Send private MESSAGE to TARGET."
  (interactive "i")
  (if (null message)
      (progn
        (setq target (completing-read "Message nick: "
1355
                                      (with-rcirc-process-buffer rcirc-process
Richard M. Stallman's avatar
Richard M. Stallman committed
1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369
                                        rcirc-nick-table)))
        (when (> (length target) 0)
          (setq message (read-string (format "Message %s: " target)))
          (when (> (length message) 0)
            (rcirc-send-message process target message))))
    (if (not (string-match "\\([^ ]+\\) \\(.+\\)" message))
        (message "Not enough args, or something.")
      (setq target (match-string 1 message)
            message (match-string 2 message))
      (rcirc-send-message process target message))))

(defun-rcirc-command query (nick)
  "Open a private chat buffer to NICK."
  (interactive (list (completing-read "Query nick: "
1370
                                      (with-rcirc-process-buffer rcirc-process
Richard M. Stallman's avatar
Richard M. Stallman committed
1371
                                        rcirc-nick-table))))
1372 1373 1374 1375
  (let ((existing-buffer (rcirc-get-buffer process nick)))
    (switch-to-buffer (or existing-buffer
			  (rcirc-get-buffer-create process nick)))
    (when (not existing-buffer)
Richard M. Stallman's avatar
Richard M. Stallman committed
1376 1377
      (rcirc-cmd-whois nick))))

1378
(defun-rcirc-command join (channel)
Richard M. Stallman's avatar
Richard M. Stallman committed
1379 1380
  "Join CHANNEL."
  (interactive "sJoin channel: ")
1381 1382
  (let ((buffer (rcirc-get-buffer-create process
                                         (car (split-string channel)))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1383 1384
    (when (not (eq (selected-window) (minibuffer-window)))
      (funcall rcirc-switch-to-buffer-function buffer))
1385
    (rcirc-send-string process (concat "JOIN " channel))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1386 1387 1388 1389 1390

(defun-rcirc-command part (channel)
  "Part CHANNEL."
  (interactive "sPart channel: ")
  (let ((channel (if (> (length channel) 0) channel target)))
1391
    (rcirc-send-string process (concat "PART " channel " :" rcirc-id-string))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1392 1393 1394 1395

(defun-rcirc-command quit (reason)
  "Send a quit message to server with REASON."
  (interactive "sQuit reason: ")
1396 1397 1398 1399
  (rcirc-send-string process (concat "QUIT :"
				     (if (not (zerop (length reason)))
					 reason
				       rcirc-id-string))))
Richard M. Stallman's avatar
Richard M. Stallman committed
1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433

(defun-rcirc-command nick (nick)
  "Change nick to NICK."
  (interactive "i")
  (when (null nick)
    (setq nick (read-string "New nick: " (rcirc-nick process))))
  (rcirc-send-string process (concat "NICK " nick)))

(defun-rcirc-command names (channel)
  "Display list of names in CHANNEL or in current channel if CHANNEL is nil.
If called interactively, prompt for a channel when prefix arg is supplied."
  (interactive "P")
  (if (interactive-p)
      (if channel
          (setq channel (read-string "List names in channel: " target))))
  (let ((channel (if (> (length channel) 0)
                     channel
                   target)))
    (rcirc-send-string process (concat "NAMES " channel))))

(defun-rcirc-command topic (topic)
  "List TOPIC for the TARGET channel.
With a prefix arg, prompt for new topic."
  (interactive "P")
  (if (and (interactive-p) topic)
      (setq topic (read-string "New Topic: " rcirc-topic)))
  (rcirc-send-string process (concat "TOPIC " target
                                     (when (> (length topic) 0)
                                       (concat " :" topic)))))

(defun-rcirc-command whois (nick)
  "Request information from server about NICK."
  (interactive (list
                (completing-read "Whois: "
1434
                                 (with-rcirc-process-buffer rcirc-process
Richard M. Stallman's avatar
Richard M. Stallman committed
1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466
                                   rcirc-nick-table))))
  (rcirc-send-string process (concat "WHOIS " nick)))

(defun-rcirc-command mode (args)
  "Set mode with ARGS."
  (interactive (list (concat (read-string "Mode nick or channel: ")
                             " " (read-string "Mode: "))))
  (rcirc-send-string process (concat "MODE " args)))

(defun-rcirc-command list (channels)
  "Request information on CHANNELS from server."
  (interactive "sList Channels: ")
  (rcirc-send-string process (concat "LIST "