lyskom-rest.el 126 KB
Newer Older
David Byers's avatar
David Byers committed
1
;;;;; -*-coding: iso-8859-1;-*-
Linus Tolke's avatar
Linus Tolke committed
2
3
;;;;;
;;;;; $Id$
4
;;;;; Copyright (C) 1991, 1996  Lysator Academic Computer Association.
Linus Tolke's avatar
Linus Tolke committed
5
6
7
8
9
;;;;;
;;;;; 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 
10
;;;;; the Free Software Foundation; either version 2, or (at your option) 
Linus Tolke's avatar
Linus Tolke committed
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
;;;;; 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
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
;;;; ================================================================
;;;; ================================================================
;;;;
;;;; File: lyskom-rest.el
;;;;
;;;; This is the rest of what was once the entire source code of the
;;;; client. Now most of the source resides in other files. Eventually
;;;; the functions in here will be distributed out to other files.
;;;; Below follows the original header of the LysKOM elisp client:
;;;;
;;;; ================================================================
;;;;
;;;; Simple LysKOM elisp client.
;;;;
;;;; Originally written by Per Cederqvist.
;;;;
;;;; Heavily hacked by:
;;;;    Thomas Bellman
;;;;    Linus Tolke
;;;;    Inge Wallin
46
47
;;;;    David K}gedal
;;;;    David Byers
Per Cederqvist's avatar
.    
Per Cederqvist committed
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
;;;;   and others.
;;;;
;;;; Some ideas stolen from lpmud.el written by Lars Willf|r and Thomas Bellman
;;;;
;;;; Conventions:
;;;;
;;;;    All functions, variables etc follow one of these conventions:
;;;;		lyskom-		general functions.
;;;;		cache-		cache-routines.
;;;;		initiate-	call a service. (Might look up in cache)
;;;;		kom-		user kommands.
;;;;		lyskom-parse-	parse (part of) a reply from the server.
;;;;				these are found in parse.el
;;;;		lyskom-edit-	Things related to the editing of texts.
;;;;		{lyskom,kom}-edit-options-
;;;;				things related to editing options
;;;;				(found in flags.el)
;;;;		{lyskom,kom}-prioritize-
;;;;				things related to the prioritize
;;;;				buffer. The file is prioritize.el
;;;;		{lyskom,kom}-{completing-read,completing,complete}-
;;;;				things related to
;;;;				lyskom-completing-read. Found in
;;;;				completing-read.el 
;;;;		lyskom-*-hook   hooks.
;;;;
;;;;    Three plus-signs (+++) in the code marks a place where more
;;;;    work is needed.
;;;;

78
79
80
81
(eval-when-compile
  (require 'lyskom-command "command")
  (require 'lyskom-menus "menus")
  (require 'lyskom-clienttypes "clienttypes.el"))
David Kågedal's avatar
David Kågedal committed
82
83


84
85
86
87
(setq lyskom-clientversion-long 
      (concat lyskom-clientversion-long
	      "$Id$\n"))

88
89
(lyskom-external-function find-face)

90

Per Cederqvist's avatar
.    
Per Cederqvist committed
91
92
93
94
95
96
97
;;;; ================================================================
;;;;                             New errors.


(put 'lyskom-protocol-error 'error-conditions
     '(error lyskom-error lyskom-protocol-error))
(put 'lyskom-protocol-error 'error-message
98
     "LysKOM protocol error")
Per Cederqvist's avatar
.    
Per Cederqvist committed
99
100
101
102

(put 'lyskom-internal-error 'error-conditions
     '(error lyskom-error lyskom-internal-error))
(put 'lyskom-internal-error 'error-message
103
     "Internal LysKOM error")
Per Cederqvist's avatar
.    
Per Cederqvist committed
104

David Kågedal's avatar
David Kågedal committed
105
(put 'lyskom-format-error 'error-conditions
David Byers's avatar
David Byers committed
106
    '(error lyskom-error lyskom-format-error))
David Kågedal's avatar
David Kågedal committed
107
(put 'lyskom-internal-error 'error-message
108
     "Internal LysKOM format error")
David Kågedal's avatar
David Kågedal committed
109

Per Cederqvist's avatar
.    
Per Cederqvist committed
110

111
112
113
114
115
116
;;; ================================================================
;;;             Global variables
;;;

(defvar lyskom-unread-mode-line nil)

Per Cederqvist's avatar
.    
Per Cederqvist committed
117
118
119
120
121
122
123
124
125
126
;;; ================================================================
;;;             Error reporting from a number of commands.
;;;

;;; Author: Inge Wallin



(defun lyskom-get-error-text (errno)
  "Get a string which is the error ERRNO in plain text."
127
128
129
130
131
  (or
   (lyskom-get-string-internal (intern (concat "error-"
					       (number-to-string errno)))
			       'lyskom-error-texts)
   (lyskom-format 'error-not-found errno)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
132

133
(defun lyskom-report-command-answer (answer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
134
135
136
137
138
139
  "Handles a void return from call to the server."
  (if answer 
      (lyskom-insert-string 'done)
    (lyskom-insert-string 'nope)
    (lyskom-format-insert 'error-code
			  (lyskom-get-error-text lyskom-errno)
David Byers's avatar
David Byers committed
140
141
			  lyskom-errno))
  answer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
142
143
144
145
146
147
148


;;; ----------------------------------------------------------------
;;; Author: Aronsson

(defun lyskom-tell-internat (key)
  "Same as lyskom-tell-server, but use a key to a list of phrases."
David Kågedal's avatar
David Kågedal committed
149
150
151
  ;; The server at Lysator produces a lot of network traffic. The
  ;; solution should to be less verbose. This is very interesting
  ;; anymore, anyway.
Per Cederqvist's avatar
.    
Per Cederqvist committed
152
153
154
155
156
157
  (lyskom-tell-server (lyskom-tell-string key)))



;;; Resume operation after a crash.

David Kågedal's avatar
David Kågedal committed
158
159
(defun kom-recover (&optional refetch)
  "Try to recover from an error.
160
161
If the optional argument REFETCH is non-nil, all caches are cleared and
`lyskom-refetch' is called."
David Kågedal's avatar
David Kågedal committed
162
  (interactive "p")
David Kågedal's avatar
Bugfix    
David Kågedal committed
163
  (lyskom-init-parse lyskom-buffer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
164
165
  (setq lyskom-call-data nil)
  (setq lyskom-pending-calls nil)
David Kågedal's avatar
David Kågedal committed
166
167
168
169
170
  (setq lyskom-output-queues (make-vector 10 nil))
  (let ((i 0))
    (while (< i 10)
      (aset lyskom-output-queues i (lyskom-queue-create))
      (++ i)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
171
172
  (setq lyskom-number-of-pending-calls 0)
  (setq lyskom-is-parsing nil)
173
174
175
  (when refetch
    (clear-all-caches)
    (lyskom-refetch))
Per Cederqvist's avatar
.    
Per Cederqvist committed
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
  (lyskom-tell-internat 'kom-tell-recover)
  (lyskom-end-of-command))


;;; ================================================================
;;;                      Run default command.


;;; Author: Tommy Persson

(defun kom-page-next-command ()
  "Scroll the bottom to the top and run the next command if it should be run"
  (interactive)
  (if (pos-visible-in-window-p (point-max))
      (progn
191
	(goto-char (point-max))
Per Cederqvist's avatar
.    
Per Cederqvist committed
192
	(recenter 0)
Lars Willför's avatar
Lars Willför committed
193
	(lyskom-next-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
194
195
    (recenter 0)
    (move-to-window-line -1)
Lars Willför's avatar
Lars Willför committed
196
    (lyskom-set-last-viewed)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
197
198


199
;;; Author: Lars Willf|r
Per Cederqvist's avatar
.    
Per Cederqvist committed
200
201
202
203

(defun kom-next-command ()
  "Run next command or scroll one page."
  (interactive)
Lars Willför's avatar
Lars Willför committed
204
205
206
207
  (if (pos-visible-in-window-p (point-max))
      (lyskom-next-command)
    (move-to-window-line -1)
    (lyskom-set-last-viewed)
208
209
    (lyskom-scroll)
    (if (< (window-start) lyskom-last-viewed)
David Byers's avatar
David Byers committed
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
        (lyskom-xemacs-or-gnu
         (let ((overlay (make-extent 
                         lyskom-last-viewed
                         (save-excursion (goto-char lyskom-last-viewed)
                                         (end-of-line)
                                         (forward-char 1)
                                         (point)))))
           (set-extent-face overlay 'kom-mark-face)
           (add-timeout 2 
                        'delete-extent
                        overlay))
         (let ((overlay (make-overlay 
                         lyskom-last-viewed
                         (save-excursion (goto-char lyskom-last-viewed)
                                         (end-of-line)
                                         (forward-char 1)
                                         (point)))))
           (overlay-put overlay 'face 'kom-mark-face)
           (run-at-time 2 nil
                        'delete-overlay
                        overlay))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
231
232
233
234
235

  
(defun kom-line-next-command ()
  "Run next command or scroll one line."
  (interactive)
Lars Willför's avatar
Lars Willför committed
236
237
238
239
240
  (if (pos-visible-in-window-p (point-max))
      (lyskom-next-command)
    (move-to-window-line 1)
    (lyskom-set-last-viewed)
    (lyskom-scroll)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
241
242


243
244
;;; Author: Per Cederqvist

Lars Willför's avatar
Lars Willför committed
245
(defun lyskom-next-command ()
246
  "Run next command."
247
  (let ((lyskom-doing-default-command t))
248
249
250
251
252
    (cond
     ((eq lyskom-command-to-do 'next-pri-text)
      (lyskom-view-priority-text))
     ((eq lyskom-command-to-do 'next-text)
      (kom-view-next-text))
David Byers's avatar
David Byers committed
253
254
     ((eq lyskom-command-to-do 'reedit-text)
      (kom-re-edit-next-text))
255
256
     ((eq lyskom-command-to-do 'next-pri-session)
      (kom-go-to-pri-session))
257
258
259
260
261
262
263
     ((eq lyskom-command-to-do 'next-conf)
      (kom-go-to-next-conf))
     ((eq lyskom-command-to-do 'next-pri-conf)
      (lyskom-go-to-pri-conf))
     ((eq lyskom-command-to-do 'when-done)
      (let ((command (lyskom-what-to-do-when-done)))
	(cond
David Byers's avatar
David Byers committed
264
265
	 ((or (stringp command)
              (vectorp command))
266
	  (execute-kbd-macro command))
David Byers's avatar
David Byers committed
267
268
         ((commandp command) (call-interactively command))
         (t (lyskom-start-of-command nil) (lyskom-end-of-command)))))
269
270
271
272
     ((eq lyskom-command-to-do 'unknown)
      (lyskom-insert
       (lyskom-get-string 'wait-for-server)))
     (t (signal 'lyskom-internal-error '(kom-next-command))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
273
274
275
276
277
278
279
280


;;; ================================================================
;;;                              View text.


(defun kom-initial-digit-view ()
  (interactive)
281
282
  (setq unread-command-events (cons last-command-event
                                    unread-command-events))
Per Cederqvist's avatar
.    
Per Cederqvist committed
283
284
285
286
287
288
  (call-interactively 'kom-view nil))


(defun kom-view (text-no)
  "View text number TEXT-NO."
  (interactive "P")
289
290
291
292
293
294
295
296
297
298
299
300
301
302
  (unwind-protect
      (progn
	(let ((kom-page-before-command nil))
	  (lyskom-start-of-command 'kom-view)
	  (lyskom-tell-internat 'kom-tell-review)
	  )
	(if (setq text-no (cond ((null text-no) nil)
				((listp text-no) (car text-no))
				(t text-no)))
	    nil
	  (setq text-no (lyskom-read-number (lyskom-get-string 'review-text-q)
					    lyskom-current-text)))
	(if (or (not (listp kom-page-before-command))
		(memq 'kom-view kom-page-before-command))
David Kågedal's avatar
David Kågedal committed
303
	    (recenter 1))
304
305
306
307
	(lyskom-tell-internat 'kom-tell-review)
	(lyskom-format-insert 'review-text-no text-no)
	(lyskom-view-text text-no))
    (lyskom-end-of-command)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
308
309


David Byers's avatar
David Byers committed
310
311
312
313
314
315
316
317
318
319
320
321
322
;;;; ================================================================
;;;;                          Re-edit text

(def-kom-command kom-re-edit-next-text ()
  "Display a buffer containing a failed submission"
  (interactive)
  (let ((el (read-list->first lyskom-reading-list)))
    (set-read-list-del-first lyskom-reading-list)
    (if (buffer-live-p (read-info->misc el))
        (lyskom-display-buffer (read-info->misc el))
      (lyskom-format-insert 'text-buffer-missing))))


323
324
325
326
327
328
329
330
331
332
333
334
335
336
;;;; ================================================================
;;;;                        Go to pri session

(def-kom-command kom-go-to-pri-session ()
  "Go to a prioritized session with unreads"
  (interactive)
  (let ((session (lyskom-get-prioritized-session)))
    (if (or (null session)
            (eq session (current-buffer))
            (not (buffer-live-p session)))
        (lyskom-insert 'no-such-kom-session)
      (lyskom-switch-to-kom-buffer session))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
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
;;;; ================================================================
;;;;                         View next text.


(defun kom-view-next-new-text ()
  "Display next new text (putting all review constructs at the end of this conf)."
  (interactive)
  (let ((len (read-list-length lyskom-reading-list))
	(finished nil))
    (while (and (not finished)
		(> len 1))
      (let ((type (read-info->type (read-list->first lyskom-reading-list))))
	(cond 
	 ((or (eq type 'REVIEW)
	      (eq type 'REVIEW-TREE)
	      (eq type 'REVIEW-MARK))
	  (read-list-rotate lyskom-reading-list))
	 ((or (eq type 'COMM-IN)
	      (eq type 'FOOTN-IN))
	  (set-read-list-del-first lyskom-reading-list))
	 (t 
	  (setq finished t))))
      (-- len)))
  (kom-view-next-text))


363
364
;;; Modified to handle filters

David Kågedal's avatar
David Kågedal committed
365
(def-kom-command kom-view-next-text ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
366
367
  "Display next text (from lyskom-reading-list)."
  (interactive)
David Kågedal's avatar
David Kågedal committed
368
369
370
371
372
373
374
375
376
  (lyskom-tell-internat 'kom-tell-read)
  (let ((action 'next-text))
    (while (eq action 'next-text)
      (if (read-list-isempty lyskom-reading-list)
	  (progn
	    (if (/= 0 lyskom-current-conf)
		(lyskom-insert-string 'completely-read-conf)
	      (lyskom-insert-string 'not-in-any-conf))
	    (setq action nil))
377
	      
David Kågedal's avatar
David Kågedal committed
378
379
380
381
382
383
384
385
386
387
388
	(progn
	  (let* ((tri (read-list->first lyskom-reading-list))
		 (text-no (car (cdr (read-info->text-list tri))))
		 (type (read-info->type tri))
		 (priority (read-info->priority
			    (read-list->first lyskom-reading-list)))
		 (is-review-tree (eq type 'REVIEW-TREE))
		 (is-review (or (eq type 'REVIEW)
				(eq type 'REVIEW-MARK)
				is-review-tree))
		 (mark-as-read (not is-review)))
389
390
	    (when is-review
              (delq text-no (read-info->text-list tri))) ;First entry only
David Kågedal's avatar
David Kågedal committed
391
392
393
394
395
396
397
398
399
	    (setq action
		  (lyskom-view-text text-no mark-as-read 
				    (and kom-read-depth-first
					 (not is-review))
				    (read-info->conf-stat
				     (read-list->first
				      lyskom-reading-list))
				    priority
				    is-review-tree
400
401
402
				    (not is-review)
				    (or (eq type 'REVIEW)
					(eq type 'REVIEW-MARK))))
David Kågedal's avatar
David Kågedal committed
403
404
405
406
	    (if mark-as-read
		(lyskom-is-read text-no)
	      (read-list-delete-text nil lyskom-reading-list)
	      (read-list-delete-text nil lyskom-to-do-list))))))))
407
  
Per Cederqvist's avatar
.    
Per Cederqvist committed
408

409
;;; Modified to handle filters
Per Cederqvist's avatar
.    
Per Cederqvist committed
410

David Kågedal's avatar
David Kågedal committed
411
;; This is horribly ugly. It acts like a user command, but it isn't.
Per Cederqvist's avatar
.    
Per Cederqvist committed
412
(defun lyskom-view-priority-text ()
David Byers's avatar
David Byers committed
413
414
415
  "Display the first text from the next conference on the lyskom-to-do-list.

Cannot be called from a callback."
Per Cederqvist's avatar
.    
Per Cederqvist committed
416
  (lyskom-start-of-command 'kom-view-next-text)
David Kågedal's avatar
David Kågedal committed
417
418
419
420
421
422
423
424
425
426
427
428
  (unwind-protect
      (progn
	(lyskom-tell-internat 'kom-tell-read)
	(let* ((tri (read-list->first lyskom-to-do-list))
	       (priority (read-info->priority
			  (read-list->first lyskom-reading-list)))
	       (text-no (car (text-list->texts (read-info->text-list tri)))))
	  (lyskom-is-read text-no)
	  (lyskom-view-text text-no t nil (read-info->conf-stat tri) 
			    priority nil t))
	(lyskom-wait-queue 'main))
    (lyskom-end-of-command)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
429
430
431


(defun lyskom-is-read (text-no)
Per Cederqvist's avatar
Per Cederqvist committed
432
  "Remove TEXT-NO from the list of texts to read.
Per Cederqvist's avatar
.    
Per Cederqvist committed
433
Deletes TEXT-NO from lyskom-reading-list and lyskom-to-do-list.
Per Cederqvist's avatar
Per Cederqvist committed
434
435
436
Adds info in lyskom-membership.

This function only modifies the internal state of the client. It does
Per Cederqvist's avatar
Per Cederqvist committed
437
438
not mark the text as read in the server. That function is performed by
lyskom-mark-as-read."
Per Cederqvist's avatar
.    
Per Cederqvist committed
439
440
  (read-list-delete-text text-no lyskom-reading-list)
  (read-list-delete-text text-no lyskom-to-do-list)
David Byers's avatar
David Byers committed
441
  (initiate-get-text-stat 'main 'lyskom-is-read-handler text-no)
442
  (setq lyskom-normally-read-texts (cons text-no lyskom-normally-read-texts)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
443
444
445
446
447


(defun lyskom-is-read-handler (text-stat)
  "Update lyskom-membership for all recipients to TEXT-STAT."
  (lyskom-traverse
448
449
      misc (text-stat->misc-info-list text-stat)
    (if (or (eq 'RECPT (misc-info->type misc))
David Byers's avatar
David Byers committed
450
            (eq 'BCC-RECPT (misc-info->type misc))
451
	    (eq 'CC-RECPT (misc-info->type misc)))
452
453
	(let ((membership (lyskom-try-get-membership
			   (misc-info->recipient-no misc))))
454
455
456
457
458
	  (if membership
	      (set-membership->read-texts
	       membership
	       (vconcat (vector (misc-info->local-no misc))
			(membership->read-texts membership))))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
459
460
461
462
463
464


;;; ================================================================
;;;                        Go to next conf.


465
(def-kom-command kom-go-to-next-conf ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
466
467
468
469
470
  "Go to next conf.
Take first conf from lyskom-to-do-list and copy it to lyskom-reading-list.
Tell server what the user is doing. If the user is reading a conf it is
moved last on lyskom-to-do-list, with priority 0."
  (interactive)
471
472
473
  (when (lyskom-check-go-to-conf)
    (lyskom-maybe-move-unread t)
    (lyskom-go-to-next-conf)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
474
475
476
477
478
479
480


(defun lyskom-go-to-pri-conf ()
  "Go to the conf with higher priority.
This differs from kom-go-to-next-conf only in the place where the yet unread 
in the current conf is placed."
  (lyskom-start-of-command 'kom-go-to-next-conf)
481
482
483
484
  (when (lyskom-check-go-to-conf)
    (lyskom-maybe-move-unread nil)
    (lyskom-go-to-next-conf)
    (lyskom-end-of-command)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
485
486
487
488
489
490


(defun lyskom-go-to-next-conf ()
  "Actually go to the next conference on the lyskom-to-do-list"
  ;; Copy first element on lyskom-to-do-list to lyskom-reading-list.
  (if (not (read-list-isempty lyskom-to-do-list))
491
492
      (let ((conf-stat (read-info->conf-stat 
                        (read-list->first lyskom-to-do-list))))
493
494
495
496
497
498
499
        (if conf-stat
            (progn (lyskom-set-mode-line conf-stat)
                   (read-list-enter-first
                    (read-list->first lyskom-to-do-list)
                    lyskom-reading-list)
                   (lyskom-enter-conf conf-stat 
                                      (read-list->first lyskom-to-do-list)))
500
501
          (read-list-enter-first
           (read-list->first lyskom-to-do-list)
502
           lyskom-reading-list)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
503
    (lyskom-insert-string 'all-conf-unread-r)
504
    (lyskom-set-mode-line (lyskom-get-string 'all-conf-unread-s))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
505
506


507
(defun lyskom-maybe-move-unread (bury)
Linus Tolke's avatar
Linus Tolke committed
508
  "Empty the reading list.
509
If the argument BURY is non-nil and there are unread articles left in the
Linus Tolke's avatar
Linus Tolke committed
510
reading list then the conf is inserted last in the to do list."
Per Cederqvist's avatar
.    
Per Cederqvist committed
511
512
  (if (not (read-list-isempty lyskom-reading-list))
      (progn
513
	(if bury
Per Cederqvist's avatar
.    
Per Cederqvist committed
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
	    (let ((conf-no nil)
		  (r 0))
	      (while (and (not conf-no)
			  (< r (read-list-length lyskom-reading-list)))
		(if (eq (read-info->type (read-list->nth lyskom-reading-list 
							 r))
			'CONF)
		    (setq conf-no (conf-stat->conf-no 
				   (read-info->conf-stat
				    (read-list->nth lyskom-reading-list r))))
		  (++ r)))
	      (if conf-no
		  (progn
		    (read-list-delete-read-info conf-no lyskom-to-do-list)
		    (read-list-enter-first (read-list->nth lyskom-reading-list
							   r)
					   lyskom-to-do-list)
		    (read-list-rotate lyskom-to-do-list)))))
	(set-read-list-empty lyskom-reading-list))))


535
536
537
538
539
540
541
542
543
544
(defun lyskom-check-go-to-conf (&optional conf)
  "Check if it is OK to go to conf CONF (a conf-stat).
It is assumed that lyskom-pers-no is a member of the conference.
This function interacts with the buffer and the user.

If CONF is nil, check the first conf on the to-do list."
  (let* ((conf-stat (or conf
                        (read-info->conf-stat 
                         (read-list->first lyskom-to-do-list))))
         (mship (and conf-stat 
David Byers's avatar
David Byers committed
545
                     (lyskom-get-membership (conf-stat->conf-no conf-stat) t)))
546
547
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
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
         (type nil)
         (continue t))
    (when (and conf-stat mship)
      (setq type (membership->type mship))

      (when (membership-type->invitation type)
        ;;; State the invitation,give the user a chance to accept it
        ;;; Leave the conf if the user does not want it
        (lyskom-format-insert 'your-invited
                              conf-stat
                              (membership->created-by mship))
        (if (lyskom-j-or-n-p (lyskom-get-string 'accept-invitation))
            (progn
              (set-membership-type->invitation type nil)
              (initiate-set-membership-type 'main
                                            nil
                                            lyskom-pers-no
                                            (conf-stat->conf-no conf-stat)
                                            (membership->type mship))
              (setq continue t))
          (progn
            (lyskom-sub-member (blocking-do 'get-pers-stat lyskom-pers-no)
                               conf-stat)
            (setq continue nil)
            )))

      (when (membership-type->secret type)
        (lyskom-format-insert-before-prompt 'bug-secret-mship conf-stat))

      (when (membership-type->passive type)
        ;;; Offer the user a chance to become an active member
        ;;; If the offer is refused, boot the user off the conference
        (lyskom-format-insert 'enter-passive conf-stat)
        (setq continue nil)
        (if (lyskom-j-or-n-p (lyskom-format 'convert-passive conf-stat))
            (progn
              (set-membership-type->passive type nil)
              (initiate-set-membership-type 'main
                                            nil 
                                            lyskom-pers-no
                                            (conf-stat->conf-no conf-stat)
                                            (membership->type mship))
              (setq continue t))
          (progn
            (setq continue nil))))
      )
    
    ;;; Return the result
    continue))

Per Cederqvist's avatar
.    
Per Cederqvist committed
596
597
598
599
600
(defun lyskom-enter-conf (conf-stat read-info)
  "Tell server which conf the user is reading.
Prints the name and amount of unread in the conference we just went to 
according to the value of kom-print-number-of-unread-on-entrance.
Args: CONF-STAT READ-INFO"
David Byers's avatar
David Byers committed
601
602
603
  (lyskom-run-hook-with-args 'lyskom-change-conf-hook
                             lyskom-current-conf
                             (conf-stat->conf-no conf-stat))
604
605
  (unless lyskom-is-anonymous
    (initiate-pepsi 'main nil (conf-stat->conf-no conf-stat)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
606
  (setq lyskom-current-conf (conf-stat->conf-no conf-stat))
607
  (let ((num-unread (text-list->length (read-info->text-list read-info))))
608
    (lyskom-format-insert (if (not kom-print-number-of-unread-on-entrance)
609
610
611
612
613
614
                              'enter-conf
                            (if (= num-unread 1)
                                'one-unread
                              'several-unread))
                          conf-stat
                          num-unread)))  
Per Cederqvist's avatar
.    
Per Cederqvist committed
615

David Byers's avatar
David Byers committed
616
617
618
619
620
621
622
(defun lyskom-leave-current-conf ()
  "Leave the current conference without going to another one."
  (set-read-list-empty lyskom-reading-list)
  (lyskom-run-hook-with-args 'lyskom-change-conf-hook
                             lyskom-current-conf 0)
  (setq lyskom-current-conf 0)
  (initiate-pepsi 'main nil 0))
Per Cederqvist's avatar
.    
Per Cederqvist committed
623
624
625
626


;;;================================================================

627
628
629
;;; in vars.el:
;(defvar lyskom-sessions-with-unread nil
;  "Global variable. List of lyskom-sessions with unread articles.")
630
631
632
633
634
635
636
;;;Must be called after lyskom-get-string is defined. Also after running 
;;;load hooks.
;;;(or (assq 'lyskom-sessions-with-unread minor-mode-alist)
;;;    (setq minor-mode-alist (cons (list 'lyskom-sessions-with-unread 
;;;			       		  (lyskom-get-string 'mode-line-unread))
;;;				 minor-mode-alist)))

Per Cederqvist's avatar
.    
Per Cederqvist committed
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651

(defun lyskom-set-mode-line (&optional conf)
  "Sets mode-line-conf-name to the name of the optional argument conf CONF.
CONF can be a a conf-stat or a string."
  (let ((name (cond
	       ((null conf) 
		(if (zerop lyskom-current-conf)
		    (lyskom-get-string 'not-present-anywhere)
		  (initiate-get-conf-stat 'modeline 'lyskom-set-mode-line
					  lyskom-current-conf)
		  nil))
	       ((stringp conf) conf)
	       ((lyskom-conf-stat-p conf)
		(conf-stat->name conf))
	       (t "")))
652
        (conf-no (if (lyskom-conf-stat-p conf) (conf-stat->conf-no conf) 0))
Per Cederqvist's avatar
.    
Per Cederqvist committed
653
	(unread -1)
654
	(total-unread 0)
655
	(letters 0)
656
	(len 0)
Per Cederqvist's avatar
.    
Per Cederqvist committed
657
658
	(read-info-list nil))

659
      ;; Set unread to the number of unread texts in CONF.
David Byers's avatar
David Byers committed
660
    (setq read-info-list (read-list->all-entries lyskom-to-do-list))
661

David Byers's avatar
David Byers committed
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
    ;; This was weird. Someone had begun to write an if, but
    ;; this was all there was: (if 
    (while read-info-list
      (if (read-info->conf-stat (car read-info-list))
          (progn
            (setq len (text-list->length
                       (read-info->text-list (car read-info-list))))
            (if (= conf-no
                   (conf-stat->conf-no 
                    (read-info->conf-stat (car read-info-list))))
                (setq unread len))
            (if (= lyskom-pers-no
                   (conf-stat->conf-no 
                    (read-info->conf-stat (car read-info-list))))
                (setq letters len))
            (setq total-unread (+ total-unread len))))
      (setq read-info-list (cdr read-info-list)))
679
680
      (if (= unread -1)
	  (setq unread 0))
David Kågedal's avatar
David Kågedal committed
681
      
682
683
684
      (if (null name)
	  nil
	(setq mode-line-conf-name 
David Kågedal's avatar
David Kågedal committed
685
686
	      (substring (concat
			  (if (lyskom-conf-stat-p conf)
687
688
			      (if (not (eq lyskom-session-priority 
                                           kom-default-session-priority))
David Kågedal's avatar
David Kågedal committed
689
690
691
692
693
694
695
				  (format "(%d/%d:%d) "
					  unread total-unread
					  lyskom-session-priority)
				(format "(%d/%d) " unread total-unread))
			    "")
			  name
			  (make-string 27 ? ))
696
			 0 27)))
David Kågedal's avatar
David Kågedal committed
697
      
698
      (if (zerop total-unread)
699
700
          (lyskom-remove-unread-buffer lyskom-buffer)
        (lyskom-add-unread-buffer lyskom-buffer))
701
      (if (zerop letters)
702
703
          (lyskom-remove-unread-buffer lyskom-buffer t)
        (lyskom-add-unread-buffer lyskom-buffer t))
David Kågedal's avatar
David Kågedal committed
704
    (force-mode-line-update)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
705
706
707
708
709
710


;;; ================================================================

;;; +++Where should this be moved???

David Byers's avatar
David Byers committed
711
(defun lyskom-try-get-membership (conf-no &optional want-passive)
Per Cederqvist's avatar
.    
Per Cederqvist committed
712
  "Returns non-nil if conference CONF-NO is present on lyskom-membership.
713
714
715
716
717
The value is actually the membership for the conference.

For foreground functions, lyskom-get-membership should probably be used
instead.

David Byers's avatar
David Byers committed
718
719
720
This function does not use blocking-do.

Optional argument mship-list is the membership list to look in."
Per Cederqvist's avatar
.    
Per Cederqvist committed
721
722
723
724
725
726
  (let ((list lyskom-membership)
	(found nil))
    (while (and (not found) (not (null list)))
      (if (= conf-no (membership->conf-no (car list)))
	  (setq found (car list)))
      (setq list (cdr list)))
David Byers's avatar
David Byers committed
727
728
729
730
731
    (if (and found
             (or want-passive
                 (not (membership-type->passive (membership->type found)))))
        found
      nil)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
732

David Byers's avatar
David Byers committed
733
(defun lyskom-get-membership (conf-no &optional want-passive)
734
735
736
737
  "Get the membership for CONF-NO, or nil if the user is not a member of
CONF-NO.

If the membership list is not fully prefetched and the membership can't be
738
found in lyskom-membership, a blocking call to the server is made."
David Byers's avatar
David Byers committed
739
  (or (lyskom-try-get-membership conf-no want-passive)
740
741
742
743
744
      (and (not (lyskom-membership-is-read))
	   (let ((membership
		  (blocking-do 'query-read-texts lyskom-pers-no conf-no)))
	     (if (and membership (lyskom-visible-membership membership))
		 (lyskom-add-membership membership conf-no))
David Byers's avatar
David Byers committed
745
746
747
748
749
750
    (if (and membership
             (or want-passive
                 (not (membership-type->passive
                       (membership->type membership)))))
        membership
      nil)))))
751
752


Per Cederqvist's avatar
.    
Per Cederqvist committed
753
754
755
756
;;;; ================================================================
;;;;                   Scrolling and text insertion.


David Kågedal's avatar
David Kågedal committed
757
758
759
760
761
(defun lyskom-trim-buffer ()
  "Trim the size of a lyskom buffer to lyskom-max-buffer-size"
  (save-excursion
    (if (and kom-max-buffer-size
	     (> (buffer-size) kom-max-buffer-size))
762
763
	(let ((delchars (- (buffer-size) kom-max-buffer-size))
	      (inhibit-read-only t))
David Kågedal's avatar
David Kågedal committed
764
765
766
767
768
	  (goto-char (point-min))
	  (while (< (point) delchars)
	    (forward-line 1))
	  (delete-region (point-min) (point))))))

Per Cederqvist's avatar
.    
Per Cederqvist committed
769
770
771
772
773
774
775
776
777
778
779
(defun lyskom-scroll ()
  "Scroll screen if necessary.
The position lyskom-last-viewed will always remain visible."
  ;; Find a window to scroll. Scroll the selected window if that shows LysKOM.
  ;; Otherwise scroll any window currently showing LysKOM.
  (let ((win
	 (cond
	  ((eq (window-buffer (selected-window)) (current-buffer))
	   (selected-window))
	  (t				;(get-buffer-window (current-buffer))
	   nil))))
Lars Willför's avatar
Lars Willför committed
780
781
782
783
784
785
786
787
788
789
    (if (and win			;Do nothing if no window showed LysKOM.
	     (not (pos-visible-in-window-p (point-max))))
	(progn
	  (goto-char (point-max))
	  (recenter -1)
	  (if (not (pos-visible-in-window-p lyskom-last-viewed))
	      (progn
		(set-window-start win lyskom-last-viewed)
		(move-to-window-line -1)
		(vertical-motion 1)
David Byers's avatar
David Byers committed
790
791
792
793
794
795
796
797
		(when (not (pos-visible-in-window-p))
		    (forward-char -1)
                    (when (> (current-column)
                             (window-width))
                      (backward-char (+ (- (current-column)
                                            (window-width))
                                        2)))
                    )))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
798
	
David Byers's avatar
David Byers committed
799
800
801
802
803
804
805
806
807
808
809
;;;
;;; Thanks to the stupid danish fool who wrote the widget package, we
;;; have to do it this way, because w3 uses widgets, and because
;;; widgets use overlays, and because overlays aren't copied between
;;; buffers. If the idiot danish flaming asshole had used text
;;; properties or something equally sensible instead, we could have
;;; managed without this shit.
;;;
;;; (Me, upset? Why would you think *that*?)
;;;

Per Cederqvist's avatar
.    
Per Cederqvist committed
810

811
(defun lyskom-do-insert (string)
David Byers's avatar
David Byers committed
812
  (let ((start (point)))
813
814
815
816
817
818
819
820
821
822
823
824
    (insert string)
    (let ((bounds (next-text-property-bounds 1 (max 1 (1- start))
                                             'special-insert))
          (next (make-marker))
          (fn nil))
      (while bounds
        (set-marker next (cdr bounds))
        (setq fn (get-text-property (car bounds) 'special-insert))
        (remove-text-properties (car bounds) (cdr bounds)
                                '(special-insert))
        (condition-case val
            (funcall fn (car bounds) (cdr bounds))
David Byers's avatar
David Byers committed
825
          (error (apply 'message "%S" val)))
826
827
828
829
830
        (setq start next)
        (setq bounds (next-text-property-bounds 1 start
                                                'special-insert))))
    ))

David Byers's avatar
David Byers committed
831
832


Per Cederqvist's avatar
.    
Per Cederqvist committed
833
834
(defun lyskom-insert (string)
  "Insert STRING last in current buffer.
835
836
837
Leaves the point at the end of the buffer if possible without
scrolling past lyskom-last-viewed (generally the most recent prompt.)
Leaves the point at the end of the window if not possible. If buffer
838
is not on screen then doesn't move point."
839
  (when (symbolp string) (setq string (lyskom-get-string string)))
David Kågedal's avatar
David Kågedal committed
840
841
842
  (let ((was-at-max (= (save-excursion (end-of-line) (point)) (point-max))))
    (save-excursion
      (goto-char (point-max))
843
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
844
        (lyskom-do-insert string))
David Kågedal's avatar
David Kågedal committed
845
846
847
848
849
850
      (lyskom-trim-buffer))
    (let ((window (get-buffer-window (current-buffer))))
      (if (and window was-at-max)
	  (if (pos-visible-in-window-p (point-max) window)
	      (goto-char (point-max))
	    (and kom-continuous-scrolling (lyskom-scroll)))))))
851

Per Cederqvist's avatar
.    
Per Cederqvist committed
852

David Byers's avatar
David Byers committed
853

854
(defun lyskom-insert-at-point (string)
855
  "Insert STRING in the current buffer at point."
856
  (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
857
    (lyskom-do-insert string))
858
859
  (lyskom-trim-buffer))  

Per Cederqvist's avatar
.    
Per Cederqvist committed
860
861
862
863

(defun lyskom-insert-before-prompt (string)
  "Insert STRING just before the prompt of if no prompt then just buffers.
If prompt on screen then do the scroll if necessary.
864
The strings buffered are printed before the prompt by lyskom-update-prompt."
865
866
867
868
869
870
871
872
873
874
875
876
  ;;
  ;; This is the policy for moving point:
  ;;
  ;; old-point-max is the point-max before the text is inserted
  ;; new-point-max is the point-max after the text is inserted
  ;;
  ;; If point /= old-point-max, leave the point where it is, and don't
  ;; scroll the window.
  ;;
  ;; If point = old-point-max, set it to new-point-max, and if the
  ;; buffer is in a window, make sure that point is visible.
  ;;
Per Cederqvist's avatar
.    
Per Cederqvist committed
877
878
  (cond
   ((and lyskom-executing-command
879
         (not (eq lyskom-is-waiting t)))
Per Cederqvist's avatar
Per Cederqvist committed
880
881
    ;; Don't insert the string until the current command is finished.
    (if (null lyskom-to-be-printed-before-prompt)
882
        (setq lyskom-to-be-printed-before-prompt (lyskom-queue-create)))
883
    (lyskom-queue-enter lyskom-to-be-printed-before-prompt 
884
                        (list string)))
885
   (t
886
887
    ;; For some reaseon save-excursion doesn't work as expected
    (let ((oldpoint (point-marker)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
888
      (goto-char (point-max))
889
890
      (beginning-of-line)
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
891
	(lyskom-do-insert string))
892
      (goto-char oldpoint))
893
894
895
896
    (let ((window (get-buffer-window (current-buffer))))
      (if (and window
	       (not (pos-visible-in-window-p (point) window)))
	  ;; This mease that the prompt has been pushed off the bottom
897
898
899
	  (save-selected-window
	    (select-window window)
	    (recenter -1)))))))
900
      
Per Cederqvist's avatar
.    
Per Cederqvist committed
901
902
903
904
905

(defun lyskom-message (format-string &rest args)
  "Like message, but converts iso-8859/1 texts to swascii if necessary.
Args: FORMAT-STRING &rest ARGS"
  (let ((str (apply 'format format-string args)))
906
    (message "%s" str)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
907
908


909
910
911
912
(defun lyskom-error (format-string &rest args)
  "Like error, but converts iso-8859/1 texts to swascii if necessary.
Args: FORMAT-STRING &rest ARGS"
  (let ((str (apply 'format format-string args)))
913
    (error "%s" str)))
914
915


Lars Willför's avatar
Lars Willför committed
916
917
918
919
920
921
(defun lyskom-set-last-viewed ()
  (save-excursion
    (vertical-motion 0)
    (setq lyskom-last-viewed (point))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
922
923
924
;;; ================================================================
;;;                  Extended string formatting

925
926
927
;;; Author: David Byers
;;; Original code: Inge Wallin

Per Cederqvist's avatar
.    
Per Cederqvist committed
928

929
(defvar lyskom-format-format
David Byers's avatar
David Byers committed
930
  "%\\(=\\)?\\(-?[0-9]+\\)?\\(#\\([0-9]+\\)\\)?\\(:\\)?\\(&\\)?\\([][@MmPpnrtsdoxcCSDF?]\\)"
931
  "regexp matching format string parts.")
Per Cederqvist's avatar
.    
Per Cederqvist committed
932
933
934

(defun lyskom-insert-string (atom)
 "Find the string corresponding to ATOM and insert it into the LysKOM buffer." 
David Byers's avatar
David Byers committed
935
936
937
 (if (stringp atom)
     (lyskom-insert atom)
   (lyskom-insert (lyskom-get-string atom))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
938

939
(defun lyskom-format (format-string &rest argl)
940
  (format-state->result (lyskom-do-format format-string argl)))
941
942

(defun lyskom-format-insert (format-string &rest argl)
943
944
  "Format and insert a string according to FORMAT-STRING.
The string is inserted at the end of the buffer with `lyskom-insert'."
945
  (let* ((state (lyskom-do-format format-string argl t))
David Kågedal's avatar
David Kågedal committed
946
947
948
	 ;; We have to use a marker, because lyskom-insert may trim
	 ;; the buffer size.
	 (start (point-max-marker))
949
	 (deferred (format-state->delayed-content state)))
950
    (lyskom-insert (format-state->result state))
951
952
953
954
955
956
    (while deferred
      (let ((defer-info (car deferred))
	    (m (make-marker)))
	(set-marker m (+ start (defer-info->pos defer-info)))
	(set-defer-info->pos defer-info m)			     
	(lyskom-defer-insertion defer-info)
David Kågedal's avatar
David Kågedal committed
957
958
	(setq deferred (cdr deferred))))
    (set-marker start nil)))
959

960
961
962
963
964
(defun lyskom-format-insert-at-point (format-string &rest argl)
  "Format and insert a string according to FORMAT-STRING.
The string is inserted at point."
  (let* ((state (lyskom-do-format format-string argl t))
	 (start (point))
965
	 (deferred (format-state->delayed-content state)))
966
    (lyskom-insert-at-point (format-state->result state))
967
968
969
970
971
972
973
    (while deferred
      (let ((defer-info (car deferred))
	    (m (make-marker)))
	(set-marker m (+ start (defer-info->pos defer-info)))
	(set-defer-info->pos defer-info m)			     
	(lyskom-defer-insertion defer-info)
	(setq deferred (cdr deferred))))))
974

975
(defun lyskom-format-insert-before-prompt (format-string &rest argl)
David Kågedal's avatar
David Kågedal committed
976
977
978
979
980
981
982
983
  "Format and insert a string according to FORMAT-STRING.
The string is inserted just before the prompt, and if the prompt is not
currently visible the text is queued to be inserted when the prompt
reappears.

Note that it is not allowed to use deferred insertions in the text."
  (lyskom-insert-before-prompt
   (format-state->result (lyskom-do-format format-string argl))))
984
985


David Kågedal's avatar
David Kågedal committed
986
(defun lyskom-do-format (format-string &optional argl allow-defer)
987
  "Do the actual formatting and return the resulting format-state."
988
989
990
991
992
993
994
995
  (let ((fmt (cond ((stringp format-string) format-string)
		   ((symbolp format-string) (lyskom-get-string 
					     format-string))))
	(state nil))
    (if (null fmt)
        (signal 'lyskom-internal-error (list 'lyskom-format-insert
                                             ": bad format string"))
      (save-excursion
David Kågedal's avatar
Bugfix    
David Kågedal committed
996
997
        (if (and (boundp 'lyskom-buffer)
		 lyskom-buffer)
David Kågedal's avatar
David Kågedal committed
998
            (set-buffer lyskom-buffer))
David Kågedal's avatar
David Kågedal committed
999
1000
1001
1002
1003
	(condition-case error
	    (setq state (lyskom-format-aux (make-format-state
					    fmt
					    0
					    argl
1004
					    "")
David Kågedal's avatar
David Kågedal committed
1005
					   allow-defer))
David Kågedal's avatar
David Kågedal committed
1006
1007
1008
	  (lyskom-format-error
	   (error "LysKOM internal error formatting %s: %s%s"
		  format-string (nth 1 error) (nth 2 error))))))
1009
    state))
1010
1011
1012



David Byers's avatar
David Byers committed
1013
1014
1015
1016
1017
;;;
;;; If you add a format letter, for goodness' sake, don't forget to
;;; att it to the regexp above too!
;;;

1018
1019


David Kågedal's avatar
David Kågedal committed
1020
(defun lyskom-format-aux (format-state allow-defer)
1021
1022
1023
1024
1025
1026
  (let ((format-length (length (format-state->format-string format-state)))
        (arg-no nil)
        (pad-length nil)
        (format-letter nil)
        (colon-flag nil)
        (equals-flag nil)
1027
        (face-flag nil)
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
        (abort-format nil))

    ;;
    ;;  Eat the format string bit by bit
    ;;

    (while (and (not abort-format)
                (< (format-state->start format-state)
                   format-length))

      ;;
      ;;    Look for a format letter. If there is none, finish up,
      ;;    otherwise handle each letter separately
      ;;

      (if (null (string-match lyskom-format-format
                              (format-state->format-string format-state)
                              (format-state->start format-state)))
          (progn
            (set-format-state->result 
             format-state
             (concat (format-state->result format-state)
                     (substring (format-state->format-string format-state)
                                (format-state->start format-state))))
            (set-format-state->start format-state
                                     (length (format-state->format-string
                                              format-state))))

        ;;
        ;; A format letter has been found
        ;;

        (set-format-state->result 
         format-state
         (concat (format-state->result format-state)
                 (substring (format-state->format-string format-state)
                            (format-state->start format-state)
                            (match-beginning 0))))

        (set-format-state->start format-state
                                 (match-end 0))

	(setq equals-flag (match-beginning 1)
1071
1072
1073
1074
1075
1076
1077
	      pad-length (if (match-beginning 2)
			     (string-to-int (substring 
					     (format-state->format-string
					      format-state)
					     (match-beginning 2)
					     (match-end 2)))
			   nil)
1078
	      arg-no (if (match-beginning 4)
1079
1080
1081
1082
1083
			 (string-to-int (substring (format-state->format-string
						    format-state)
						   (match-beginning 4)
						   (match-end 4)))
		       nil)
1084
	      colon-flag (match-beginning 5)
1085
1086
              face-flag (match-beginning 6)
	      format-letter (if (match-beginning 7)
1087
1088
				(aref (format-state->format-string 
				       format-state)
1089
				      (match-beginning 7))
1090
1091
1092
1093
			      (signal 'lyskom-internal-error
				      (list 'lyskom-format-aux 
					    (format-state->format-string
					     format-state)))))
1094

David Byers's avatar
David Byers committed
1095
1096
1097
1098
1099

        ;;
        ;;  If the format letter is an end-of-group letter, abort
        ;;  formatting and return to the caller.
        ;;
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113

	(if (= ?\] format-letter)
	    (progn 
	      (setq abort-format t)
	      (set-format-state->start format-state (match-end 0)))

	  (setq format-state 
            (lyskom-format-aux-help 
             format-state
             pad-length
             arg-no
             format-letter
             equals-flag
             colon-flag
1114
             face-flag
1115
1116
1117
1118
1119
             (if (and (match-beginning 2)
                      (eq (aref (format-state->format-string format-state)
                                (match-beginning 2))
                          ?0))
                 ?0
David Byers's avatar
David Byers committed
1120
               ?\ )
David Kågedal's avatar
David Kågedal committed
1121
	     allow-defer))))))
1122
1123
1124
1125
1126
1127
1128
1129
1130
  (lyskom-tweak-format-state format-state))


(defun lyskom-format-aux-help (format-state
                               pad-length
                               arg-no
                               format-letter
                               equals-flag
                               colon-flag
1131
                               face-flag
1132
                               pad-letter
David Kågedal's avatar
David Kågedal committed
1133
			       allow-defer)
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
  (let ((arg nil)
        (result nil)
        (propl nil)
        (prop-adjust-start 0)
        (prop-adjust-end 0)
        (oldpos (length (format-state->result format-state)))
        (abs-length (cond ((null pad-length) nil)
                          ((< pad-length 0) (- 0 pad-length))
                          (t pad-length))))
    (if (and arg-no 
             (< (format-state->args-length format-state) arg-no))
David Kågedal's avatar
David Kågedal committed
1145
        (signal 'lyskom-format-error (list 'lyskom-format
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
                                             ": too few arguments")))
    (if arg-no
        (setq arg (nth (1- arg-no) (format-state->args format-state))))
    
    (if (format-props-p arg)        
        (setq propl (format-props->propl arg)
              arg (format-props->arg arg)))
    
    
    (cond
     ;;
     ;;  Format a string or symbol by simply inserting it into the
     ;;  result list
     ;;
     ((= format-letter ?s)
      (setq result (cond ((stringp arg) arg)
                         ((symbolp arg) (symbol-name arg))
David Kågedal's avatar
David Kågedal committed
1163
                         (t (signal 'lyskom-format-error
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
                                    (list 'lyskom-format
                                          ": argument error"))))))
     ;;
     ;;  Format a number by conferting it to a string and inserting
     ;;  it into the result list
     ;;
     ((or (= format-letter ?d)
          (= format-letter ?o)
          (= format-letter ?x))
      (setq result (if (integerp arg)
                       (format (format "%%%c" format-letter)
                               arg)
                     (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error")))))
     ;;
     ;;  Format a character by converting it to a string and inserting
     ;;  it into the result list
     ;;
     ((= format-letter ?c)
David Byers's avatar
David Byers committed
1184
1185
1186
1187
1188
      (setq result (cond ((integerp arg) (char-to-string (int-to-char arg)))
                         ((characterp arg) (char-to-string arg))
                         (t (signal 'lyskom-internal-error
                                    (list 'lyskom-format
                                          ": argument error"))))))
1189
1190
1191
1192
1193
1194
1195
     ;;
     ;;  Format a literal percent character by inserting a string
     ;;  containing it into the result list
     ;;
     ((= format-letter ?%)
      (setq result "%")) 
     
David Byers's avatar
David Byers committed
1196
1197
1198
1199
1200
1201
1202
1203
     ;;
     ;;  Format a command name somewhat specially
     ;;
     ((= format-letter ?C)
      (setq result (cond ((stringp arg) arg)
                         ((vectorp arg) 
                          (mapconcat 'single-key-description
                                     (append arg nil) " "))
David Byers's avatar
David Byers committed
1204
                         ((and arg (symbolp arg))
1205
                          (if (memq arg lyskom-commands)
David Byers's avatar
David Byers committed
1206
1207
			      (lyskom-command-name arg)
			    (prin1-to-string arg t)))
David Byers's avatar
David Byers committed
1208
                         (t (format "(%S)" arg)))))
David Byers's avatar
David Byers committed
1209
1210
1211
1212
1213
1214
1215

     ;;
     ;;  Format a sexp by princing it. Sort of.
     ;;
     ((= format-letter ?S)
      (setq result (format "%S" arg)))

1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
     ;;
     ;;  Format a text property array indicator by retreiving the
     ;;  properties from the argument list and adding a start of 
     ;;  new properties to the format state
     ;;
     ((= format-letter ?@)
      (set-format-state->delayed-propl
       format-state
       (cons (cons (length (format-state->result format-state))
                   arg)
             (format-state->delayed-propl format-state))))
     ;;
     ;;  Format a subformat list by recursively formatting the contents
     ;;  of the list, augmenting the result and format state
     ;;
David Kågedal's avatar
David Kågedal committed
1231
1232
1233
1234
1235
1236
1237
1238
     ;;  Idea: If this code used lyskom-do-format instead, we could
     ;;  use it to truncate a complex format by using a format string
     ;;  such as:  "%17[ %#1s will be truncated %]"
     ;;
     ;;  This could be useful for faster response when deferring
     ;;  printing. But this function would become more complex and
     ;;  slower.
     ;;
1239
     ((= format-letter ?\[)
David Kågedal's avatar
David Kågedal committed
1240
      (setq format-state (lyskom-format-aux format-state allow-defer)
1241
            result nil))
1242

David Byers's avatar
David Byers committed
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
     ;; A predicate
     ;; Get the predicate type and then parse the format string
     ;; accordingly

     ((= format-letter ?\?)
      (unless (string-match "[db]" 
                            (format-state->format-string format-state)
                            (format-state->start format-state))
        (lyskom-error "Unknown predicate in format string %s (%d)"
                      (format-state->format-string format-state)
                      (format-state->start format-state)))
      (set-format-state->start format-state (match-end 0))
      (let ((predicate-type (elt (match-string 0
                                 (format-state->format-string format-state))
                                 0)))
        (cond 

         ;; Plural/singular predicate
         ;; arg is an integer. Use the first subformat if it is one
         ;; and the second if it is other than one.
         ((= predicate-type ?d)
          (setq format-state
                (lyskom-format-do-binary-predicate (= arg 1)
                                                   format-state 
                                                   allow-defer)
                result nil))

         ;; True/false predicate
         ((= predicate-type ?b)
          (setq format-state
                (lyskom-format-do-binary-predicate arg
                                                   format-state
                                                   allow-defer)
                result nil))
         )))

1279
1280
1281
1282
1283
1284
     ((= format-letter ?F)
      (setq result 
            (if (lyskom-conf-stat-p arg)
                (let ((face (conf-stat-find-aux arg 9))
                      (string (copy-sequence "X")))
                  (lyskom-maybe-add-face-to-string face string))
David Byers's avatar
David Byers committed
1285
              " ")))
1286

1287
1288
1289
1290
1291
1292
1293
1294
     ;;
     ;;  Format a conference or person name by retreiving information
     ;;  about the conference or person and inserting it as a button
     ;;  (unless the colon flag is set)
     ;;
     ((or (= format-letter ?M)
          (= format-letter ?P))
      (setq result
David Kågedal's avatar
David Kågedal committed
1295
            (cond
1296
1297
1298
1299
1300
1301
             ;; The string is already supplied
             ((stringp arg) arg)

             ;; Conference 0 does not exist, and person 0 means anonymous
             ((and (integerp arg)
                   (zerop arg))
1302
	      (setq colon-flag t)
David Byers's avatar
X    
David Byers committed
1303
1304
1305
1306
1307
1308
1309
              (lyskom-format (cond ((= format-letter ?P)
                                    (or lyskom-default-pers-string
                                        'person-is-anonymous))
                                   ((= format-letter ?M)
                                    (or lyskom-default-conf-string
                                        'conference-does-not-exist)))
                             arg)
1310
	      )
1311
1312

             ;; Delay the printing
David Kågedal's avatar
David Kågedal committed
1313
             ((and allow-defer
1314
                   kom-deferred-printing
1315
                   (integerp arg))
1316
              (let ((tmp (cache-get-uconf-stat arg)))
1317
                (if (null tmp)
1318
                    (let* ((format-element
1319
			    (concat "%#2@%"
1320
1321
1322
1323
1324
1325
				    (if equals-flag "=" "")
				    (if pad-length (int-to-string pad-length))
				    "#1"
				    (if colon-flag ":" "")
				    (char-to-string format-letter)))
			   (defer-info (lyskom-create-defer-info
1326
					'get-uconf-stat
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
					arg
					'lyskom-deferred-insert-conf
					oldpos
					(if pad-length
					    (if equals-flag
						(abs pad-length)
					      (max (length
						    lyskom-defer-indicator)
						   (abs pad-length)))
					  (length lyskom-defer-indicator))
					format-element
					lyskom-default-conf-string)))
		      (set-format-state->delayed-content
1340
                       format-state
1341
                       (cons defer-info
1342
1343
                             (format-state->delayed-content
                              format-state)))
1344
                      lyskom-defer-indicator)
1345
1346
1347

                  ;; The conf-stat was in the cache

1348
                  (setq arg tmp)
1349
                  (uconf-stat->name arg)
1350
                  )))
David Kågedal's avatar
David Kågedal committed
1351
	     
1352
1353
             ;; The argument is an integer and we do not permit 
             ;; deferred printing
1354
             ((integerp arg)
1355
              (let ((conf-stat (blocking-do 'get-uconf-stat arg)))
1356
1357
1358
1359
1360
                (if (null conf-stat)
                    (lyskom-format (if (= format-letter ?P)
                                       'person-does-not-exist
                                     'conference-does-not-exist)
                                   arg)
1361
                  (uconf-stat->name conf-stat))))
David Kågedal's avatar
David Kågedal committed
1362
	     
1363
             ;; We got a conf-stat, and can use it directly
1364
             ((lyskom-conf-stat-p arg)
1365
1366
1367
1368
1369
              (if face-flag
                  (let ((face (conf-stat-find-aux arg 9)))
                    (lyskom-maybe-add-face-to-string face
                                                     (conf-stat->name arg)))
                (conf-stat->name arg)))
1370

1371
             ;; We have an uconf-stat
1372
1373
             ((lyskom-uconf-stat-p arg)
              (uconf-stat->name arg))