Source

erc / erc-goodies.el

Full commit
  1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
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
;; erc-goodies.el --- Collection of ERC modules

;; Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation

;; Author: Jorgen Schaefer <forcer@forcix.cx>

;; Most code is taken verbatim from erc.el, see there for the original
;; authors.

;; This file is part of GNU Emacs.

;; GNU Emacs 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.

;; GNU Emacs 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
;; 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.

;;; Commentary:

;; This provides some small but still useful modes for ERC.

;;; Code:

(require 'erc)

;; Imenu Autoload
(add-hook 'erc-mode-hook
          (lambda ()
            (setq imenu-create-index-function 'erc-create-imenu-index)))
(autoload 'erc-create-imenu-index "erc-imenu" "Imenu index creation function")

;;; Automatically scroll to bottom
(defcustom erc-input-line-position nil
  "Specify where to position the input line when using `erc-scroll-to-bottom'.

This should be an integer specifying the line of the buffer on which
the input line should stay.  A value of \"-1\" would keep the input
line positioned on the last line in the buffer.  This is passed as an
argument to `recenter'."
  :group 'erc-display
  :type '(choice integer (const nil)))

(define-erc-module scrolltobottom nil
  "This mode causes the prompt to stay at the end of the window.
You have to activate or deactivate it in already created windows
separately."
  ((add-hook 'erc-mode-hook 'erc-add-scroll-to-bottom))
  ((remove-hook 'erc-mode-hook 'erc-add-scroll-to-bottom)))

(defun erc-add-scroll-to-bottom ()
  "A hook function for `erc-mode-hook' to recenter output at bottom of window.

If you find that ERC hangs when using this function, try customizing
the value of `erc-input-line-position'.

This works whenever scrolling happens, so it's added to
`window-scroll-functions' rather than `erc-insert-post-hook'."
  ;;(make-local-hook 'window-scroll-functions)
  (add-hook 'window-scroll-functions 'erc-scroll-to-bottom nil t))

(defun erc-scroll-to-bottom (window display-start)
  "Recenter WINDOW so that `point' is on the last line.

This is added to `window-scroll-functions' by `erc-add-scroll-to-bottom'.

You can control which line is recentered to by customizing the
variable `erc-input-line-position'.

DISPLAY-START is ignored."
  (if (and window (window-live-p window))
      ;; Temporarily bind resize-mini-windows to nil so that users who have it
      ;; set to a non-nil value will not suffer from premature minibuffer
      ;; shrinkage due to the below recenter call.  I have no idea why this
      ;; works, but it solves the problem, and has no negative side effects.
      ;; (Fran Litterio, 2003/01/07)
      (let ((resize-mini-windows nil))
        (save-selected-window
          (select-window window)
          (save-restriction
            (widen)
            (when (and erc-insert-marker
                       ;; we're editing a line. Scroll.
                       (> (point) erc-insert-marker))
              (save-excursion
                (goto-char (point-max))
                (recenter (or erc-input-line-position -1))
                (sit-for 0))))))))

;;; Make read only
(define-erc-module readonly nil
  "This mode causes all inserted text to be read-only."
  ((add-hook 'erc-insert-post-hook 'erc-make-read-only)
   (add-hook 'erc-send-post-hook 'erc-make-read-only))
  ((remove-hook 'erc-insert-post-hook 'erc-make-read-only)
   (remove-hook 'erc-send-post-hook 'erc-make-read-only)))

(defun erc-make-read-only ()
  "Make all the text in the current buffer read-only.
Put this function on `erc-insert-post-hook' and/or `erc-send-post-hook'."
  (put-text-property (point-min) (point-max) 'read-only t)
  (put-text-property (point-min) (point-max) 'front-sticky t)
  (put-text-property (point-min) (point-max) 'rear-nonsticky t))

;; Distinguish non-commands
(defvar erc-noncommands-list '(erc-cmd-ME
                               erc-cmd-COUNTRY
                               erc-cmd-SV
                               erc-cmd-SM
                               erc-cmd-SMV
                               erc-cmd-LASTLOG)
  "List of commands that are aliases for CTCP ACTION or for erc messages.

If a command's function symbol is in this list, the typed command
does not appear in the ERC buffer after the user presses ENTER.")

(define-erc-module noncommands nil
  "This mode distinguishies non-commands.
Commands listed in `erc-insert-this' know how to display
themselves."
  ((add-hook 'erc-send-pre-hook 'erc-send-distinguish-noncommands))
  ((remove-hook 'erc-send-pre-hook 'erc-send-distinguish-noncommands)))

(defun erc-send-distinguish-noncommands (str)
  "If STR is an ERC non-command, set `erc-insert-this' to nil."
  (let* ((command (erc-extract-command-from-line str))
         (cmd-fun (and command
                       (car command))))
    (when (and cmd-fun
               (not (string-match "\n.+$" str))
               (memq cmd-fun erc-noncommands-list))
      (setq erc-insert-this nil))))

;;; IRC control character processing.
(defgroup erc-control-characters nil
  "Dealing with control characters"
  :group 'erc)

(defcustom erc-interpret-controls-p t
  "*If non-nil, display IRC colours and other highlighting effects.

If this is set to the symbol `remove', ERC removes all IRC colors and
highlighting effects.  When this variable is non-nil, it can cause Emacs to run
slowly on systems lacking sufficient CPU speed.  In chatty channels, or in an
emergency (message flood) it can be turned off to save processing time.  See
`erc-toggle-interpret-controls'."
  :group 'erc-control-characters
  :type '(choice (const :tag "Highlight control characters" t)
                 (const :tag "Remove control characters" remove)
                 (const :tag "Display raw control characters" nil)))

(defcustom erc-interpret-mirc-color nil
  "*If non-nil, erc will interpret mIRC color codes."
  :group 'erc-control-characters
  :type 'boolean)

(defcustom erc-beep-p nil
  "Beep if C-g is in the server message.
The value `erc-interpret-controls-p' must also be t for this to work."
  :group 'erc-control-characters
  :type 'boolean)

(defface erc-bold-face '((t (:bold t)))
  "ERC bold face."
  :group 'erc-faces)
(defface erc-inverse-face
  '((t (:foreground "White" :background "Black")))
  "ERC inverse face."
  :group 'erc-faces)
(defface erc-underline-face '((t (:underline t)))
  "ERC underline face."
  :group 'erc-faces)

(defface fg:erc-color-face0 '((t (:foreground "White")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face1 '((t (:foreground "black")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face2 '((t (:foreground "blue4")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face3 '((t (:foreground "green4")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face4 '((t (:foreground "red")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face5 '((t (:foreground "brown")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face6 '((t (:foreground "purple")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face7 '((t (:foreground "orange")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face8 '((t (:foreground "yellow")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face9 '((t (:foreground "green")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face10 '((t (:foreground "lightblue1")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face11 '((t (:foreground "cyan")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face12 '((t (:foreground "blue")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face13 '((t (:foreground "deeppink")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face14 '((t (:foreground "gray50")))
  "ERC face."
  :group 'erc-faces)
(defface fg:erc-color-face15 '((t (:foreground "gray90")))
  "ERC face."
  :group 'erc-faces)

(defface bg:erc-color-face0 '((t (:background "White")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face1 '((t (:background "black")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face2 '((t (:background "blue4")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face3 '((t (:background "green4")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face4 '((t (:background "red")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face5 '((t (:background "brown")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face6 '((t (:background "purple")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face7 '((t (:background "orange")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face8 '((t (:background "yellow")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face9 '((t (:background "green")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face10 '((t (:background "lightblue1")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face11 '((t (:background "cyan")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face12 '((t (:background "blue")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face13 '((t (:background "deeppink")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face14 '((t (:background "gray50")))
  "ERC face."
  :group 'erc-faces)
(defface bg:erc-color-face15 '((t (:background "gray90")))
  "ERC face."
  :group 'erc-faces)

(defun erc-get-bg-color-face (n)
  "Fetches the right face for background color N (0-15)."
  (if (stringp n) (setq n (string-to-number n)))
  (if (not (numberp n))
      (progn
        (message "erc-get-bg-color-face: n is NaN: %S" n)
        (beep)
        'default)
    (when (> n 16)
      (erc-log (format "   Wrong color: %s" n))
      (setq n (mod n 16)))
    (cond
     ((and (>= n 0) (< n 16))
      (intern (concat "bg:erc-color-face" (number-to-string n))))
     (t (erc-log (format "   Wrong color: %s" n)) 'default))))

(defun erc-get-fg-color-face (n)
  "Fetches the right face for foreground color N (0-15)."
  (if (stringp n) (setq n (string-to-number n)))
  (if (not (numberp n))
      (progn
        (message "erc-get-fg-color-face: n is NaN: %S" n)
        (beep)
        'default)
    (when (> n 16)
      (erc-log (format "   Wrong color: %s" n))
      (setq n (mod n 16)))
    (cond
     ((and (>= n 0) (< n 16))
      (intern (concat "fg:erc-color-face" (number-to-string n))))
     (t (erc-log (format "   Wrong color: %s" n)) 'default))))

(define-erc-module irccontrols nil
  "This mode enables the interpretation of IRC control chars."
  ((add-hook 'erc-insert-modify-hook 'erc-controls-highlight)
   (add-hook 'erc-send-modify-hook 'erc-controls-highlight))
  ((remove-hook 'erc-insert-modify-hook 'erc-controls-highlight)
   (remove-hook 'erc-send-modify-hook 'erc-controls-highlight)))

(defun erc-controls-interpret (str)
   "Return a copy of STR after dealing with IRC control characters.
See `erc-interpret-controls-p' and `erc-interpret-mirc-color' for options."
   (when str
     (let ((s str))
       (cond ((eq erc-interpret-controls-p 'remove)
              (erc-controls-strip s))
             (erc-interpret-controls-p
              (let ((boldp nil)
                    (inversep nil)
                    (underlinep nil)
                    (fg nil)
                    (bg nil))
                (while (string-match erc-controls-highlight-regexp s)
                  (let ((control (match-string 1 s))
                        (fg-color (match-string 2 s))
                        (bg-color (match-string 4 s))
                        (start (match-beginning 0))
                        (end (+ (match-beginning 0)
                                (length (match-string 5 s)))))
                    (setq s (erc-replace-match-subexpression-in-string
                             "" s control 1 start))
                    (cond ((and erc-interpret-mirc-color (or fg-color bg-color))
                           (setq fg fg-color)
                           (setq bg bg-color))
                          ((string= control "\C-b")
                           (setq boldp (not boldp)))
                          ((string= control "\C-v")
                           (setq inversep (not inversep)))
                          ((string= control "\C-_")
                           (setq underlinep (not underlinep)))
                          ((string= control "\C-c")
                           (setq fg nil
                                 bg nil))
                          ((string= control "\C-g")
                           (when erc-beep-p
                             (ding)))
                          ((string= control "\C-o")
                           (setq boldp nil
                                 inversep nil
                                 underlinep nil
                                 fg nil
                                 bg nil))
                          (t nil))
                    (erc-controls-propertize
                     start end boldp inversep underlinep fg bg s)))
                s))
             (t s)))))

(defun erc-controls-strip (str)
  "Return a copy of STR with all IRC control characters removed."
  (when str
    (let ((s str))
      (while (string-match erc-controls-remove-regexp s)
        (setq s (replace-match "" nil nil s)))
      s)))

(defvar erc-controls-remove-regexp
  "\C-b\\|\C-_\\|\C-v\\|\C-g\\|\C-o\\|\C-c[0-9]?[0-9]?\\(,[0-9][0-9]?\\)?"
  "Regular expression which matches control characters to remove.")

(defvar erc-controls-highlight-regexp
  (concat "\\(\C-b\\|\C-v\\|\C-_\\|\C-g\\|\C-o\\|"
          "\C-c\\([0-9][0-9]?\\)?\\(,\\([0-9][0-9]?\\)\\)?\\)"
          "\\([^\C-b\C-v\C-_\C-c\C-g\C-o\n]*\\)")
  "Regular expression which matches control chars and the text to highlight.")

(defun erc-controls-highlight ()
  "Highlight IRC control chars in the buffer.
This is useful for `erc-insert-modify-hook' and
`erc-send-modify-hook'. Also see `erc-interpret-controls-p' and
`erc-interpret-mirc-color'."
  (goto-char (point-min))
  (cond ((eq erc-interpret-controls-p 'remove)
         (while (re-search-forward erc-controls-remove-regexp nil t)
           (replace-match "")))
        (erc-interpret-controls-p
         (let ((boldp nil)
               (inversep nil)
               (underlinep nil)
               (fg nil)
               (bg nil))
           (while (re-search-forward erc-controls-highlight-regexp nil t)
             (let ((control (match-string 1))
                   (fg-color (match-string 2))
                   (bg-color (match-string 4))
                   (start (match-beginning 0))
                   (end (+ (match-beginning 0) (length (match-string 5)))))
               (replace-match "" nil nil nil 1)
               (cond ((and erc-interpret-mirc-color (or fg-color bg-color))
                      (setq fg fg-color)
                      (setq bg bg-color))
                     ((string= control "\C-b")
                      (setq boldp (not boldp)))
                     ((string= control "\C-v")
                      (setq inversep (not inversep)))
                     ((string= control "\C-_")
                      (setq underlinep (not underlinep)))
                     ((string= control "\C-c")
                      (setq fg nil
                            bg nil))
                     ((string= control "\C-g")
                      (when erc-beep-p
                        (ding)))
                     ((string= control "\C-o")
                      (setq boldp nil
                            inversep nil
                            underlinep nil
                            fg nil
                            bg nil))
                     (t nil))
               (erc-controls-propertize start end
                                        boldp inversep underlinep fg bg)))))
        (t nil)))

(defun erc-controls-propertize (from to boldp inversep underlinep fg bg
                                     &optional str)
  "Prepend properties from IRC control characters between FROM and TO.
If optional argument STR is provided, apply to STR, otherwise prepend properties
to a region in the current buffer."
  (font-lock-prepend-text-property
   from
   to
   'face
   (append (if boldp
               '(erc-bold-face)
             nil)
           (if inversep
               '(erc-inverse-face)
             nil)
           (if underlinep
               '(erc-underline-face)
             nil)
           (if fg
               (list (erc-get-fg-color-face fg))
             nil)
           (if bg
               (list (erc-get-bg-color-face bg))
             nil))
   str)
  str)

(defun erc-toggle-interpret-controls (&optional arg)
  "Toggle interpretation of control sequences in messages.

If ARG is positive, interpretation is turned on.
Else interpretation is turned off."
  (interactive "P")
  (cond ((and (numberp arg) (> arg 0))
         (setq erc-interpret-controls-p t))
        (arg (setq erc-interpret-controls-p nil))
        (t (setq erc-interpret-controls-p (not erc-interpret-controls-p))))
  (message "ERC color interpretation %s"
           (if erc-interpret-controls-p "ON" "OFF")))

;; Smiley
(define-erc-module smiley nil
  "This mode translates text-smileys such as :-) into pictures.
This requires the function `smiley-region', which is defined in
smiley.el, which is part of Gnus."
  ((add-hook 'erc-insert-modify-hook 'erc-smiley)
   (add-hook 'erc-send-modify-hook 'erc-smiley))
  ((remove-hook 'erc-insert-modify-hook 'erc-smiley)
   (remove-hook 'erc-send-modify-hook 'erc-smiley)))

(defun erc-smiley ()
  "Smilify a region.
This function should be used with `erc-insert-modify-hook'."
  (when (fboundp 'smiley-region)
    (smiley-region (point-min) (point-max))))

;; Unmorse
(define-erc-module unmorse nil
  "This mode causes morse code in the current channel to be unmorsed."
  ((add-hook 'erc-insert-modify-hook 'erc-unmorse))
  ((remove-hook 'erc-insert-modify-hook 'erc-unmorse)))

(defun erc-unmorse ()
  "Unmorse some text.
Add this to `erc-insert-modify-hook' if you happen to be on a
channel that has weird people talking in morse to each other.

See also `unmorse-region'."
  (goto-char (point-min))
  (when (re-search-forward "[.-]+\\([.-]+[/ ]\\)+[.-]+" nil t)
    (unmorse-region (match-beginning 0) (match-end 0))))

;;; erc-occur
(defun erc-occur (string &optional proc)
  "Search for STRING in all buffers related to current server.
If called interactively and prefix argument is given, search on all connected
servers.  If called from a program, PROC specifies the server process."
  (interactive
   (list (read-string "Search for: ")
         (if current-prefix-arg
             nil erc-server-process)))
  (if (fboundp 'multi-occur)
      (multi-occur (erc-buffer-list nil proc) string)
    (error "`multi-occur' is not defined as a function")))

(provide 'erc-goodies)

;; arch-tag: d987ae26-9e28-4c72-9596-e617309fb582
;;; erc-goodies.el ends here