1 ;; erc-goodies.el --- Collection of ERC modules
3 ;; Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 ;; Free Software Foundation, Inc.
6 ;; Author: Jorgen Schaefer <forcer@forcix.cx>
8 ;; Most code is taken verbatim from erc.el, see there for the original
11 ;; This file is part of GNU Emacs.
13 ;; GNU Emacs is free software: you can redistribute it and/or modify
14 ;; it under the terms of the GNU General Public License as published by
15 ;; the Free Software Foundation, either version 3 of the License, or
16 ;; (at your option) any later version.
18 ;; GNU Emacs is distributed in the hope that it will be useful,
19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
21 ;; GNU General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
28 ;; This provides some small but still useful modes for ERC.
36 (defun erc-imenu-setup ()
37 "Setup Imenu support in an ERC buffer."
38 (set (make-local-variable 'imenu-create-index-function
)
39 'erc-create-imenu-index
))
41 (add-hook 'erc-mode-hook
'erc-imenu-setup
)
42 (autoload 'erc-create-imenu-index
"erc-imenu" "Imenu index creation function")
44 ;;; Automatically scroll to bottom
45 (defcustom erc-input-line-position nil
46 "Specify where to position the input line when using `erc-scroll-to-bottom'.
48 This should be an integer specifying the line of the buffer on which
49 the input line should stay. A value of \"-1\" would keep the input
50 line positioned on the last line in the buffer. This is passed as an
51 argument to `recenter'."
53 :type
'(choice integer
(const nil
)))
55 (define-erc-module scrolltobottom nil
56 "This mode causes the prompt to stay at the end of the window."
57 ((add-hook 'erc-mode-hook
'erc-add-scroll-to-bottom
)
58 (dolist (buffer (erc-buffer-list))
59 (with-current-buffer buffer
60 (erc-add-scroll-to-bottom))))
61 ((remove-hook 'erc-mode-hook
'erc-add-scroll-to-bottom
)
62 (dolist (buffer (erc-buffer-list))
63 (with-current-buffer buffer
64 (remove-hook 'window-scroll-functions
'erc-scroll-to-bottom t
)))))
66 (defun erc-add-scroll-to-bottom ()
67 "A hook function for `erc-mode-hook' to recenter output at bottom of window.
69 If you find that ERC hangs when using this function, try customizing
70 the value of `erc-input-line-position'.
72 This works whenever scrolling happens, so it's added to
73 `window-scroll-functions' rather than `erc-insert-post-hook'."
74 ;;(make-local-hook 'window-scroll-functions)
75 (add-hook 'window-scroll-functions
'erc-scroll-to-bottom nil t
))
77 (defun erc-scroll-to-bottom (window display-start
)
78 "Recenter WINDOW so that `point' is on the last line.
80 This is added to `window-scroll-functions' by `erc-add-scroll-to-bottom'.
82 You can control which line is recentered to by customizing the
83 variable `erc-input-line-position'.
85 DISPLAY-START is ignored."
86 (if (window-live-p window
)
87 ;; Temporarily bind resize-mini-windows to nil so that users who have it
88 ;; set to a non-nil value will not suffer from premature minibuffer
89 ;; shrinkage due to the below recenter call. I have no idea why this
90 ;; works, but it solves the problem, and has no negative side effects.
91 ;; (Fran Litterio, 2003/01/07)
92 (let ((resize-mini-windows nil
))
93 (erc-with-selected-window window
96 (when (and erc-insert-marker
97 ;; we're editing a line. Scroll.
98 (> (point) erc-insert-marker
))
100 (goto-char (point-max))
101 (recenter (or erc-input-line-position -
1))
105 (define-erc-module readonly nil
106 "This mode causes all inserted text to be read-only."
107 ((add-hook 'erc-insert-post-hook
'erc-make-read-only
)
108 (add-hook 'erc-send-post-hook
'erc-make-read-only
))
109 ((remove-hook 'erc-insert-post-hook
'erc-make-read-only
)
110 (remove-hook 'erc-send-post-hook
'erc-make-read-only
)))
112 (defun erc-make-read-only ()
113 "Make all the text in the current buffer read-only.
114 Put this function on `erc-insert-post-hook' and/or `erc-send-post-hook'."
115 (put-text-property (point-min) (point-max) 'read-only t
)
116 (put-text-property (point-min) (point-max) 'front-sticky t
)
117 (put-text-property (point-min) (point-max) 'rear-nonsticky t
))
119 ;;; Move to prompt when typing text
120 (define-erc-module move-to-prompt nil
121 "This mode causes the point to be moved to the prompt when typing text."
122 ((add-hook 'erc-mode-hook
'erc-move-to-prompt-setup
)
123 (dolist (buffer (erc-buffer-list))
124 (with-current-buffer buffer
125 (erc-move-to-prompt-setup))))
126 ((remove-hook 'erc-mode-hook
'erc-move-to-prompt-setup
)
127 (dolist (buffer (erc-buffer-list))
128 (with-current-buffer buffer
129 (remove-hook 'pre-command-hook
'erc-move-to-prompt t
)))))
131 (defun erc-move-to-prompt ()
132 "Move the point to the ERC prompt if this is a self-inserting command."
133 (when (and erc-input-marker
(< (point) erc-input-marker
)
134 (eq 'self-insert-command this-command
))
137 (goto-char (point-max))))
139 (defun erc-move-to-prompt-setup ()
140 "Initialize the move-to-prompt module for XEmacs."
141 (add-hook 'pre-command-hook
'erc-move-to-prompt nil t
))
143 ;;; Keep place in unvisited channels
144 (define-erc-module keep-place nil
145 "Leave point above un-viewed text in other channels."
146 ((add-hook 'erc-insert-pre-hook
'erc-keep-place
))
147 ((remove-hook 'erc-insert-pre-hook
'erc-keep-place
)))
149 (defun erc-keep-place (ignored)
150 "Move point away from the last line in a non-selected ERC buffer."
151 (when (and (not (eq (window-buffer (selected-window))
153 (>= (point) erc-insert-marker
))
155 (goto-char (erc-beg-of-input-line))
158 ;;; Distinguish non-commands
159 (defvar erc-noncommands-list
'(erc-cmd-ME
165 "List of commands that are aliases for CTCP ACTION or for ERC messages.
167 If a command's function symbol is in this list, the typed command
168 does not appear in the ERC buffer after the user presses ENTER.")
170 (define-erc-module noncommands nil
171 "This mode distinguishes non-commands.
172 Commands listed in `erc-insert-this' know how to display
174 ((add-hook 'erc-send-pre-hook
'erc-send-distinguish-noncommands
))
175 ((remove-hook 'erc-send-pre-hook
'erc-send-distinguish-noncommands
)))
177 (defun erc-send-distinguish-noncommands (str)
178 "If STR is an ERC non-command, set `erc-insert-this' to nil."
179 (let* ((command (erc-extract-command-from-line str
))
180 (cmd-fun (and command
183 (not (string-match "\n.+$" str
))
184 (memq cmd-fun erc-noncommands-list
))
185 (setq erc-insert-this nil
))))
187 ;;; IRC control character processing.
188 (defgroup erc-control-characters nil
189 "Dealing with control characters."
192 (defcustom erc-interpret-controls-p t
193 "*If non-nil, display IRC colors and other highlighting effects.
195 If this is set to the symbol `remove', ERC removes all IRC colors and
196 highlighting effects. When this variable is non-nil, it can cause Emacs to run
197 slowly on systems lacking sufficient CPU speed. In chatty channels, or in an
198 emergency (message flood) it can be turned off to save processing time. See
199 `erc-toggle-interpret-controls'."
200 :group
'erc-control-characters
201 :type
'(choice (const :tag
"Highlight control characters" t
)
202 (const :tag
"Remove control characters" remove
)
203 (const :tag
"Display raw control characters" nil
)))
205 (defcustom erc-interpret-mirc-color nil
206 "*If non-nil, ERC will interpret mIRC color codes."
207 :group
'erc-control-characters
210 (defcustom erc-beep-p nil
211 "Beep if C-g is in the server message.
212 The value `erc-interpret-controls-p' must also be t for this to work."
213 :group
'erc-control-characters
216 (defface erc-bold-face
'((t (:bold t
)))
219 (defface erc-inverse-face
220 '((t (:foreground
"White" :background
"Black")))
223 (defface erc-underline-face
'((t (:underline t
)))
224 "ERC underline face."
227 (defface fg
:erc-color-face0
'((t (:foreground
"White")))
230 (defface fg
:erc-color-face1
'((t (:foreground
"black")))
233 (defface fg
:erc-color-face2
'((t (:foreground
"blue4")))
236 (defface fg
:erc-color-face3
'((t (:foreground
"green4")))
239 (defface fg
:erc-color-face4
'((t (:foreground
"red")))
242 (defface fg
:erc-color-face5
'((t (:foreground
"brown")))
245 (defface fg
:erc-color-face6
'((t (:foreground
"purple")))
248 (defface fg
:erc-color-face7
'((t (:foreground
"orange")))
251 (defface fg
:erc-color-face8
'((t (:foreground
"yellow")))
254 (defface fg
:erc-color-face9
'((t (:foreground
"green")))
257 (defface fg
:erc-color-face10
'((t (:foreground
"lightblue1")))
260 (defface fg
:erc-color-face11
'((t (:foreground
"cyan")))
263 (defface fg
:erc-color-face12
'((t (:foreground
"blue")))
266 (defface fg
:erc-color-face13
'((t (:foreground
"deeppink")))
269 (defface fg
:erc-color-face14
'((t (:foreground
"gray50")))
272 (defface fg
:erc-color-face15
'((t (:foreground
"gray90")))
276 (defface bg
:erc-color-face0
'((t (:background
"White")))
279 (defface bg
:erc-color-face1
'((t (:background
"black")))
282 (defface bg
:erc-color-face2
'((t (:background
"blue4")))
285 (defface bg
:erc-color-face3
'((t (:background
"green4")))
288 (defface bg
:erc-color-face4
'((t (:background
"red")))
291 (defface bg
:erc-color-face5
'((t (:background
"brown")))
294 (defface bg
:erc-color-face6
'((t (:background
"purple")))
297 (defface bg
:erc-color-face7
'((t (:background
"orange")))
300 (defface bg
:erc-color-face8
'((t (:background
"yellow")))
303 (defface bg
:erc-color-face9
'((t (:background
"green")))
306 (defface bg
:erc-color-face10
'((t (:background
"lightblue1")))
309 (defface bg
:erc-color-face11
'((t (:background
"cyan")))
312 (defface bg
:erc-color-face12
'((t (:background
"blue")))
315 (defface bg
:erc-color-face13
'((t (:background
"deeppink")))
318 (defface bg
:erc-color-face14
'((t (:background
"gray50")))
321 (defface bg
:erc-color-face15
'((t (:background
"gray90")))
325 (defun erc-get-bg-color-face (n)
326 "Fetches the right face for background color N (0-15)."
327 (if (stringp n
) (setq n
(string-to-number n
)))
328 (if (not (numberp n
))
330 (erc-error "erc-get-bg-color-face: n is NaN: %S" n
))
332 (erc-log (format " Wrong color: %s" n
))
335 ((and (>= n
0) (< n
16))
336 (intern (concat "bg:erc-color-face" (number-to-string n
))))
337 (t (erc-log (format " Wrong color: %s" n
)) 'default
))))
339 (defun erc-get-fg-color-face (n)
340 "Fetches the right face for foreground color N (0-15)."
341 (if (stringp n
) (setq n
(string-to-number n
)))
342 (if (not (numberp n
))
344 (erc-error "erc-get-fg-color-face: n is NaN: %S" n
))
346 (erc-log (format " Wrong color: %s" n
))
349 ((and (>= n
0) (< n
16))
350 (intern (concat "fg:erc-color-face" (number-to-string n
))))
351 (t (erc-log (format " Wrong color: %s" n
)) 'default
))))
353 (define-erc-module irccontrols nil
354 "This mode enables the interpretation of IRC control chars."
355 ((add-hook 'erc-insert-modify-hook
'erc-controls-highlight
)
356 (add-hook 'erc-send-modify-hook
'erc-controls-highlight
))
357 ((remove-hook 'erc-insert-modify-hook
'erc-controls-highlight
)
358 (remove-hook 'erc-send-modify-hook
'erc-controls-highlight
)))
360 (defun erc-controls-interpret (str)
361 "Return a copy of STR after dealing with IRC control characters.
362 See `erc-interpret-controls-p' and `erc-interpret-mirc-color' for options."
365 (cond ((eq erc-interpret-controls-p
'remove
)
366 (erc-controls-strip s
))
367 (erc-interpret-controls-p
373 (while (string-match erc-controls-highlight-regexp s
)
374 (let ((control (match-string 1 s
))
375 (fg-color (match-string 2 s
))
376 (bg-color (match-string 4 s
))
377 (start (match-beginning 0))
378 (end (+ (match-beginning 0)
379 (length (match-string 5 s
)))))
380 (setq s
(erc-replace-match-subexpression-in-string
381 "" s control
1 start
))
382 (cond ((and erc-interpret-mirc-color
(or fg-color bg-color
))
385 ((string= control
"\C-b")
386 (setq boldp
(not boldp
)))
387 ((string= control
"\C-v")
388 (setq inversep
(not inversep
)))
389 ((string= control
"\C-_")
390 (setq underlinep
(not underlinep
)))
391 ((string= control
"\C-c")
394 ((string= control
"\C-g")
397 ((string= control
"\C-o")
404 (erc-controls-propertize
405 start end boldp inversep underlinep fg bg s
)))
409 (defun erc-controls-strip (str)
410 "Return a copy of STR with all IRC control characters removed."
413 (while (string-match erc-controls-remove-regexp s
)
414 (setq s
(replace-match "" nil nil s
)))
417 (defvar erc-controls-remove-regexp
418 "\C-b\\|\C-_\\|\C-v\\|\C-g\\|\C-o\\|\C-c[0-9]?[0-9]?\\(,[0-9][0-9]?\\)?"
419 "Regular expression which matches control characters to remove.")
421 (defvar erc-controls-highlight-regexp
422 (concat "\\(\C-b\\|\C-v\\|\C-_\\|\C-g\\|\C-o\\|"
423 "\C-c\\([0-9][0-9]?\\)?\\(,\\([0-9][0-9]?\\)\\)?\\)"
424 "\\([^\C-b\C-v\C-_\C-c\C-g\C-o\n]*\\)")
425 "Regular expression which matches control chars and the text to highlight.")
427 (defun erc-controls-highlight ()
428 "Highlight IRC control chars in the buffer.
429 This is useful for `erc-insert-modify-hook' and `erc-send-modify-hook'.
430 Also see `erc-interpret-controls-p' and `erc-interpret-mirc-color'."
431 (goto-char (point-min))
432 (cond ((eq erc-interpret-controls-p
'remove
)
433 (while (re-search-forward erc-controls-remove-regexp nil t
)
435 (erc-interpret-controls-p
441 (while (re-search-forward erc-controls-highlight-regexp nil t
)
442 (let ((control (match-string 1))
443 (fg-color (match-string 2))
444 (bg-color (match-string 4))
445 (start (match-beginning 0))
446 (end (+ (match-beginning 0) (length (match-string 5)))))
447 (replace-match "" nil nil nil
1)
448 (cond ((and erc-interpret-mirc-color
(or fg-color bg-color
))
451 ((string= control
"\C-b")
452 (setq boldp
(not boldp
)))
453 ((string= control
"\C-v")
454 (setq inversep
(not inversep
)))
455 ((string= control
"\C-_")
456 (setq underlinep
(not underlinep
)))
457 ((string= control
"\C-c")
460 ((string= control
"\C-g")
463 ((string= control
"\C-o")
470 (erc-controls-propertize start end
471 boldp inversep underlinep fg bg
)))))
474 (defun erc-controls-propertize (from to boldp inversep underlinep fg bg
476 "Prepend properties from IRC control characters between FROM and TO.
477 If optional argument STR is provided, apply to STR, otherwise prepend properties
478 to a region in the current buffer."
479 (font-lock-prepend-text-property
490 '(erc-underline-face)
493 (list (erc-get-fg-color-face fg
))
496 (list (erc-get-bg-color-face bg
))
501 (defun erc-toggle-interpret-controls (&optional arg
)
502 "Toggle interpretation of control sequences in messages.
504 If ARG is positive, interpretation is turned on.
505 Else interpretation is turned off."
507 (cond ((and (numberp arg
) (> arg
0))
508 (setq erc-interpret-controls-p t
))
509 (arg (setq erc-interpret-controls-p nil
))
510 (t (setq erc-interpret-controls-p
(not erc-interpret-controls-p
))))
511 (message "ERC color interpretation %s"
512 (if erc-interpret-controls-p
"ON" "OFF")))
515 (define-erc-module smiley nil
516 "This mode translates text-smileys such as :-) into pictures.
517 This requires the function `smiley-region', which is defined in
518 smiley.el, which is part of Gnus."
519 ((add-hook 'erc-insert-modify-hook
'erc-smiley
)
520 (add-hook 'erc-send-modify-hook
'erc-smiley
))
521 ((remove-hook 'erc-insert-modify-hook
'erc-smiley
)
522 (remove-hook 'erc-send-modify-hook
'erc-smiley
)))
526 This function should be used with `erc-insert-modify-hook'."
527 (when (fboundp 'smiley-region
)
528 (smiley-region (point-min) (point-max))))
531 (define-erc-module unmorse nil
532 "This mode causes morse code in the current channel to be unmorsed."
533 ((add-hook 'erc-insert-modify-hook
'erc-unmorse
))
534 ((remove-hook 'erc-insert-modify-hook
'erc-unmorse
)))
536 (defun erc-unmorse ()
538 Add this to `erc-insert-modify-hook' if you happen to be on a
539 channel that has weird people talking in morse to each other.
541 See also `unmorse-region'."
542 (goto-char (point-min))
543 (when (re-search-forward "[.-]+\\([.-]*/? *\\)+[.-]+/?" nil t
)
545 (narrow-to-region (match-beginning 0) (match-end 0))
546 ;; Turn " / " into " "
547 (goto-char (point-min))
548 (while (re-search-forward " / " nil t
)
550 ;; Turn "/ " into "/"
551 (goto-char (point-min))
552 (while (re-search-forward "/ " nil t
)
555 (unmorse-region (point-min) (point-max)))))
558 (defun erc-occur (string &optional proc
)
559 "Search for STRING in all buffers related to current server.
560 If called interactively and prefix argument is given, search on all connected
561 servers. If called from a program, PROC specifies the server process."
563 (list (read-string "Search for: ")
564 (if current-prefix-arg
565 nil erc-server-process
)))
566 (if (fboundp 'multi-occur
)
567 (multi-occur (erc-buffer-list nil proc
) string
)
568 (error "`multi-occur' is not defined as a function")))
570 (provide 'erc-goodies
)
572 ;; arch-tag: d987ae26-9e28-4c72-9596-e617309fb582
573 ;;; erc-goodies.el ends here