async.el 14 KB
Newer Older
Linus Tolke's avatar
Linus Tolke committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
;;;;;
;;;;; $Id$
;;;;; Copyright (C) 1991  Lysator Academic Computer Association.
;;;;;
;;;;; This file is part of the LysKOM server.
;;;;; 
;;;;; LysKOM 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 1, or (at your option) 
;;;;; any later version.
;;;;; 
;;;;; LysKOM 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 LysKOM; see the file COPYING.  If not, write to
;;;;; Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
;;;;; or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
;;;;; MA 02139, USA.
;;;;;
;;;;; Please mail bug reports to bug-lyskom@lysator.liu.se. 
;;;;;
Per Cederqvist's avatar
.    
Per Cederqvist committed
25
26
27
28
29
30
31
32
33
34
35
36
37
;;;; ================================================================
;;;; ================================================================
;;;;
;;;; File: async.el
;;;;
;;;; These functions implement a nice service that give the user
;;;; continuous messages about what other users are doing and what
;;;; is happening inside the lyskom server.
;;;;
;;;; Author: Linus Tolke
;;;; Entry:  Inge Wallin
;;;;

38
39
40
41
(setq lyskom-clientversion-long 
      (concat lyskom-clientversion-long
	      "$Id$\n"))

Per Cederqvist's avatar
.    
Per Cederqvist committed
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

(defun lyskom-parse-async (tokens buffer)
  "Parse an asynchronous message from the server.
The message consists of TOKENS tokens. Unknown messages are skipped.
Actions are taken to perform the various tasks that is required on reciept of
an asynchronous message.
If variable kom-presence-messages is non-nil or some minibuffer editing is 
going on then nothing is printed on the message area.
This function is called with the lyskom-unparsed-buffer as current-buffer.
All calls using the lyskom-variables have to be made using the buffer BUFFER.

Be careful when editing this. All parsing is done with the buffer this
function is called with as the current-buffer, while all calls from
this function shall be with current-buffer the BUFFER."
  (let ((msg-no (lyskom-parse-num)))
    (cond
     ((eq msg-no 0)			; New text
      (let* ((text-no (lyskom-parse-num))
	     (text-stat (lyskom-parse-text-stat text-no)))
	(lyskom-save-excursion
	  (set-buffer buffer)
	  (lyskom-async-new-text text-stat)))) ;

     ((eq msg-no 1)			; Logout (obsolete)
;      (let ((pno (lyskom-parse-num)))
;	(lyskom-save-excursion
;	  (set-buffer buffer)
;	  (if (and (not (zerop lyskom-pers-no))
;		   (or kom-presence-messages
;		       kom-presence-messages-in-buffer))
;	      (initiate-get-conf-stat 'follow 
;				      'lyskom-show-logged-out-person
;				      pno))
;	  (if (not (zerop lyskom-pers-no))
;	      (initiate-who-is-on 'who-buffer 'cache-set-who-info-list))))
      )

     ((eq msg-no 2)			; Login, obsolete.
      (lyskom-skip-tokens tokens))

     ((eq msg-no 3)			; Conference deleted
      (lyskom-skip-tokens tokens))

     ((eq msg-no 4)			; Conference created
      (lyskom-skip-tokens tokens))

     ((eq msg-no 5)             ; A person or conference has changed name.
      (let ((conf-no (lyskom-parse-num))
	    (old-name (lyskom-parse-string))
	    (new-name (lyskom-parse-string)))
	(lyskom-save-excursion
	  (set-buffer buffer)
	  (cache-del-conf-stat conf-no) ;+++Borde {ndra i cachen i st{llet.
	  (cond
	   ((lyskom-is-in-minibuffer))
	   (kom-presence-messages
	    (lyskom-message (lyskom-format 'name-has-changed-to-name
					   old-name new-name))))
	  (cond
	   (kom-presence-messages-in-buffer
	    (lyskom-insert-before-prompt
	     (lyskom-format 'name-has-changed-to-name-r old-name new-name )))))))

     ((eq msg-no 6)			;i_am_on - something is moving
      (let ((info (lyskom-parse-who-info)))
	(lyskom-save-excursion
	  (set-buffer buffer)
	  (if (zerop lyskom-pers-no)
	      nil
111
112
113
114
115
116
117
118
119
120
121
122
; This fetches the conf-stats once to much.
;	    (if (and (/= (who-info->pers-no info) 0)
;		     (/= (who-info->pers-no info) lyskom-pers-no))
;					;Don't show myself.
;		(initiate-get-conf-stat 'follow
;					'lyskom-show-changed-person
;					(who-info->pers-no info)
;					(who-info->working-conf info)
;					(who-info->doing-what info)))
;	    (if (/= (who-info->working-conf info) 0)
;		(initiate-get-conf-stat 'void nil
;					(who-info->working-conf info)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
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
	    (cache-add-who-info info)))))

     ((eq msg-no 7)			; Database is syncing.
      (lyskom-save-excursion
	(set-buffer buffer)
	(if (and (not (lyskom-is-in-minibuffer))
		 kom-presence-messages)
	    (lyskom-message (lyskom-get-string 'database-sync)))
	(setq mode-line-process ": saving")
	(set-buffer-modified-p (buffer-modified-p))
	(sit-for 0)
	(if (not lyskom-pending-calls)
	    (initiate-get-time 'async nil))))

     ((eq msg-no 8)			; Forced leave conference
      (lyskom-skip-tokens tokens))

     ((eq msg-no 9)			; A person has logged in
      (let ((pers-no (lyskom-parse-num))
	    (session-no (lyskom-parse-num)))
	(lyskom-save-excursion
	  (set-buffer buffer)
	  (if (and (not (zerop lyskom-pers-no))
		   (/= pers-no lyskom-pers-no))
					; Don't show myself.
	      (initiate-get-conf-stat 'follow
149
				      'lyskom-show-logged-in-person
Per Cederqvist's avatar
.    
Per Cederqvist committed
150
151
152
				      pers-no))
;	  (if (not (zerop lyskom-pers-no))
;	      (initiate-who-is-on 'who-buffer 'cache-set-who-info-list))
153
154
	  (if (and (not (zerop lyskom-pers-no))
		   lyskom-who-info-buffer-is-on)
Per Cederqvist's avatar
.    
Per Cederqvist committed
155
156
157
158
	      (initiate-get-session-info 'who-buffer 'cache-add-session-info
					 session-no))
	  )))

159
; msg-no 10 is the old broadcast message. No longer used.
Per Cederqvist's avatar
.    
Per Cederqvist committed
160
161
162
163
164
165
166
167
168
169
170
171

     ((eq msg-no 11)
      (lyskom-save-excursion
       (set-buffer buffer)
       (lyskom-insert-before-prompt (lyskom-get-string 'lyskom-is-full))))

     ((eq msg-no 12)			; Message to the user (or everybody)
      (let ((recipient (lyskom-parse-num))
	    (sender (lyskom-parse-num))
	    (message (lyskom-parse-string)))
	(lyskom-save-excursion
	 (set-buffer buffer)
Per Cederqvist's avatar
Per Cederqvist committed
172
173
174
175
	 (initiate-get-conf-stat 'follow
				 'lyskom-show-personal-message sender
				 recipient
				 message))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
176
177
178
179
180
181
182
183
184
185
186
187
188
189

     ((eq msg-no 13)			; New logout
      (let ((pers-no (lyskom-parse-num))
	    (session-no (lyskom-parse-num)))
	(lyskom-save-excursion
	  (set-buffer buffer)
	  (if (and (not (zerop lyskom-pers-no))
		   (or kom-presence-messages
		       kom-presence-messages-in-buffer))
	      (initiate-get-conf-stat 'follow 
				      'lyskom-show-logged-out-person
				      pers-no
				      session-no))
	  (if (not (zerop lyskom-pers-no))
190
	      (lyskom-run 'who-buffer 'cache-del-who-info session-no)))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
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

     (t
      (lyskom-skip-tokens tokens)))))


(defun lyskom-show-logged-in-person (conf-stat)
  "Visa p} kommandoraden vem som loggat in."
  (cond
   ((lyskom-is-in-minibuffer))
   (kom-presence-messages
    (lyskom-message (lyskom-format 'has-entered
			    (conf-stat->name conf-stat)))))
  (cond
   (kom-presence-messages-in-buffer
    (lyskom-insert-before-prompt
     (lyskom-format 'has-entered-r
		    (conf-stat->name conf-stat))))))


(defun lyskom-show-logged-out-person (conf-stat session-no)
  "Visa p} kommandoraden vem som loggat ut."
  (cond
   ((lyskom-is-in-minibuffer))
   (kom-presence-messages
    (lyskom-message (lyskom-format 'has-left (conf-stat->name conf-stat)))))
  (cond
   (kom-presence-messages-in-buffer
    (lyskom-insert-before-prompt
     (lyskom-format 'has-left-r
	     (conf-stat->name conf-stat))))))


(defun lyskom-show-changed-person (personconfstat conf-num doing)
  "Tells the user what another person is doing."
  (if personconfstat			;+++ Annan felhantering
      (progn
	(cond
	 ((lyskom-is-in-minibuffer))
	 ((and kom-presence-messages
	       (or (= 0 conf-num)
		   (eq conf-num lyskom-current-conf))
	       (/= 0 (length doing)))
	  (lyskom-message "%s %s" (conf-stat->name personconfstat) 
		   (let ((string
			  (concat (char-to-string (downcase
						   (string-to-char doing)))
				  (substring doing 1))))
		     (if kom-emacs-knows-iso-8859-1
			 string
		       (iso-8859-1-to-swascii string))))))
	(cond
	 ((and (eq kom-presence-messages-in-buffer t)
	       (or (= 0 conf-num)
		   (eq conf-num lyskom-current-conf))
	       (/= 0 (length doing)))
	  (lyskom-insert-before-prompt
	   (concat (conf-stat->name personconfstat)
		   " "
		   (concat (char-to-string (downcase (string-to-char doing)))
			   (substring doing 1)) 
		   "\n")))))))


(defun lyskom-is-in-minibuffer ()
  "Returns non-nil if I am using the minibuffer for some reading."
  (not (zerop (minibuffer-depth))))


(defun lyskom-show-personal-message (sender recipient message)
  "Insert a personal message into the lyskom buffer.
Args: SENDER: conf-stat for the person issuing the broadcast message or a
	      string that is the sender.
      RECIPIENT: 0 if this message is for everybody, otherwise the pers-no 
                 of the user.
      MESSAGE: A string containing the message."
266
  (lyskom-insert-personal-message sender recipient message)
267
268
  (run-hooks 'lyskom-personal-message-hook))

269
270

(defun lyskom-insert-personal-message (sender recipient message)
271
  "Insert a personal message in the current buffer.
272
Arguments: SENDER RECIPIENT MESSAGE.
273
274
275
276
277
SENDER is a pers-stat (possibly nil) or a string.
RECIPIENT is 0 if the message is public, otherwise the pers-no of the user.
MESSAGE is a string containing the message.
INSERT-FUNCTION is a function that given a string inserts it into the
current buffer."
278
  (lyskom-handle-as-personal-message
Per Cederqvist's avatar
.    
Per Cederqvist committed
279
280
281
282
283
284
   (if (= recipient 0)
       (lyskom-format 'message-broadcast
		      (cond
		       ((stringp sender) sender)
		       (sender (conf-stat->name sender))
		       (t (lyskom-get-string 'unknown)))
285
286
		      message
		      (substring (current-time-string) 11 19))
Per Cederqvist's avatar
.    
Per Cederqvist committed
287
     (lyskom-format 'message-from
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
		    (cond
		     ((stringp sender) sender)
		     (sender (conf-stat->name sender))
		     (t (lyskom-get-string 'unknown)))
		    message
		    (substring (current-time-string) 11 19)))))

  
(defun lyskom-handle-as-personal-message (string)
  "Insert STRING as a personal message.
The buffer, is chosen according to the kom-show-personal-messages-in-buffer
variable value.
The text is converted, before insertion."
  (lyskom-save-excursion
   (cond
    ((eq kom-show-personal-messages-in-buffer t)
     (lyskom-insert-before-prompt string))
    ((null kom-show-personal-messages-in-buffer))
    (t
     (set-buffer (get-buffer-create kom-show-personal-messages-in-buffer))
     (goto-char (point-max))
     (insert (if kom-emacs-knows-iso-8859-1
		 string
	       (iso-8859-1-to-swascii string)))))
   (if kom-pop-personal-messages
       (display-buffer (current-buffer))))
314
315
  (if kom-ding-on-personal-messages
      (beep)))
316
  
Per Cederqvist's avatar
.    
Per Cederqvist committed
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

;;; ================================================================
;;;            Functions for dealing with a new text


(defun lyskom-default-new-text-hook (text-stat)
  "Print a message if the user was waiting. Change the prompt. run hooks."
  (if (and (not lyskom-no-prompt)	           ;There is a prompt
	   (not lyskom-dont-change-prompt) 	   ;We shall change it
	   (not lyskom-executing-command)) 	   ;We have time to do it.
      ;; Alter the prompt.
      (let ((buffer-read-only nil))
	(lyskom-save-excursion
	  (goto-char (point-max))
	  (beginning-of-line)
	  (delete-region (point) (point-max)))
	(setq lyskom-no-prompt t)))

  (let ((no-message nil))
    (run-hooks 'lyskom-new-text-hook)
  
    (if (and (not no-message)
	     lyskom-is-waiting
	     (not (lyskom-is-in-minibuffer)))
	(lyskom-message (lyskom-format 'text-is-created
				(text-stat->text-no text-stat))))))

  
(defun lyskom-async-new-text (text-stat)
  "Take care of a message that a new text has been created."
  (cache-del-pers-stat (text-stat->author text-stat)) ;+++Borde {ndra i cachen i st{llet.
  
  (lyskom-traverse
   misc-info (text-stat->misc-info-list text-stat)
   (let ((type (misc-info->type misc-info)))
     (cond
      ((or (eq type 'RECPT)
	   (eq type 'CC-RECPT))
       ;; add on lyskom-reading-list and lyskom-to-do-list if
       ;; this recipient is a recipient that has been checked.
       (initiate-get-conf-stat 'async 'lyskom-add-new-text
			       (misc-info->recipient-no misc-info)
			       (text-stat->text-no text-stat)
			       (misc-info->local-no misc-info)))
      ((eq type 'COMM-TO)
       (cache-del-text-stat (misc-info->comm-to misc-info)))
      ((eq type 'FOOTN-TO)
       (cache-del-text-stat (misc-info->footn-to misc-info)))
      (t
       (signal 'lyskom-internal-error
	       (list 'lyskom-async-new-text
		     "Unexpected misc-info in new text "
		     type))))))

  ;; Give a message if the user is waiting.
  (lyskom-run 'async 'lyskom-default-new-text-hook text-stat)

  (lyskom-run 'async 'lyskom-prefetch-and-print-prompt))


(defun lyskom-add-new-text (recipient text-no local-no)
  "RECIPIENT is a conf-stat and recipient of TEXT-NO.
Args: RECIPIENT TEXT-NO LOCAL-NO.
LOCAL-NO is the texts local number in RECIPIENT. This info is used
to update the no-of-texts field in the cache.

Also add this info in lyskom-to-do-list if info about RECIPIENT as been
fetched. Does not try to print prompt or do any prefetch. That will be
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
done after all the confs has been handled.

If recipient is nil this means we are crossposting to a protected conference.
In that case, just discard this call."

  (cond
   (recipient				;+++ Annan felhantering.
    ;; Update the cache.

    (set-conf-stat->no-of-texts
     recipient
     (max (conf-stat->no-of-texts recipient)
	  (+ local-no -1
	     (- (conf-stat->first-local-no recipient)))))

    ;; Update the read-lists.

    (if (and (lyskom-conf-fetched-p (conf-stat->conf-no recipient))
	     (not (read-list-enter-text text-no recipient lyskom-to-do-list)))
	;; If we have already read all texts in the conference...
	(let ((info (lyskom-create-read-info
		     'CONF
		     recipient
		     (membership->priority
		      (lyskom-member-p (conf-stat->conf-no recipient)))
		     (lyskom-create-text-list (list text-no)))))
	  (read-list-enter-read-info info lyskom-to-do-list)
	  (if (= lyskom-current-conf (conf-stat->conf-no recipient))
	      (read-list-enter-first info lyskom-reading-list))))

    (lyskom-set-mode-line))))