lyskom-rest.el 107 KB
Newer Older
1
;;;;; -*-coding: raw-text;-*-
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
106
107
(put 'lyskom-format-error 'error-conditions
     '(error lyskom-error lyskom-format-error))
(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
253
254
255
256
257
258
259
    (cond
     ((eq lyskom-command-to-do 'next-pri-text)
      (lyskom-view-priority-text))
     ((eq lyskom-command-to-do 'next-text)
      (kom-view-next-text))
     ((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
260
261
	 ((or (stringp command)
              (vectorp command))
262
	  (execute-kbd-macro command))
David Byers's avatar
David Byers committed
263
264
         ((commandp command) (call-interactively command))
         (t (lyskom-start-of-command nil) (lyskom-end-of-command)))))
265
266
267
268
     ((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
269
270
271
272
273
274
275
276


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


(defun kom-initial-digit-view ()
  (interactive)
277
278
  (setq unread-command-events (cons last-command-event
                                    unread-command-events))
Per Cederqvist's avatar
.    
Per Cederqvist committed
279
280
281
282
283
284
  (call-interactively 'kom-view nil))


(defun kom-view (text-no)
  "View text number TEXT-NO."
  (interactive "P")
285
286
287
288
289
290
291
292
293
294
295
296
297
298
  (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
299
	    (recenter 1))
300
301
302
303
	(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
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


;;;; ================================================================
;;;;                         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))


332
333
;;; Modified to handle filters

David Kågedal's avatar
David Kågedal committed
334
(def-kom-command kom-view-next-text ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
335
336
  "Display next text (from lyskom-reading-list)."
  (interactive)
David Kågedal's avatar
David Kågedal committed
337
338
339
340
341
342
343
344
345
  (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))
346
	      
David Kågedal's avatar
David Kågedal committed
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
	(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)))
	    (if is-review
		(delq text-no 
		      (read-info->text-list tri))) ;First entry only
	    (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
David Kågedal's avatar
David Kågedal committed
370
371
372
373
374
				    (not is-review)))
	    (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))))))))
375
  
Per Cederqvist's avatar
.    
Per Cederqvist committed
376

377
;;; Modified to handle filters
Per Cederqvist's avatar
.    
Per Cederqvist committed
378

David Kågedal's avatar
David Kågedal committed
379
;; This is horribly ugly. It acts like a user command, but it isn't.
Per Cederqvist's avatar
.    
Per Cederqvist committed
380
381
382
(defun lyskom-view-priority-text ()
  "Display the first text from the next conference on the lyskom-to-do-list."
  (lyskom-start-of-command 'kom-view-next-text)
David Kågedal's avatar
David Kågedal committed
383
384
385
386
387
388
389
390
391
392
393
394
  (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
395
396
397


(defun lyskom-is-read (text-no)
Per Cederqvist's avatar
Per Cederqvist committed
398
  "Remove TEXT-NO from the list of texts to read.
Per Cederqvist's avatar
.    
Per Cederqvist committed
399
Deletes TEXT-NO from lyskom-reading-list and lyskom-to-do-list.
Per Cederqvist's avatar
Per Cederqvist committed
400
401
402
Adds info in lyskom-membership.

This function only modifies the internal state of the client. It does
Per Cederqvist's avatar
Per Cederqvist committed
403
404
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
405
406
  (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
407
  (initiate-get-text-stat 'main 'lyskom-is-read-handler text-no)
408
  (setq lyskom-normally-read-texts (cons text-no lyskom-normally-read-texts)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
409
410
411
412
413


(defun lyskom-is-read-handler (text-stat)
  "Update lyskom-membership for all recipients to TEXT-STAT."
  (lyskom-traverse
414
415
      misc (text-stat->misc-info-list text-stat)
    (if (or (eq 'RECPT (misc-info->type misc))
David Byers's avatar
David Byers committed
416
            (eq 'BCC-RECPT (misc-info->type misc))
417
	    (eq 'CC-RECPT (misc-info->type misc)))
418
419
	(let ((membership (lyskom-try-get-membership
			   (misc-info->recipient-no misc))))
420
421
422
423
424
	  (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
425
426
427
428
429
430


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


431
(def-kom-command kom-go-to-next-conf ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
  "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)
  (lyskom-maybe-move-unread t)
  (lyskom-go-to-next-conf))


(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)
  (lyskom-maybe-move-unread nil)
447
448
  (lyskom-go-to-next-conf)
  (lyskom-end-of-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
449
450
451
452
453
454
455
456
457
458
459
460


(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))
      (progn
	(read-list-enter-first
	   (read-list->first lyskom-to-do-list)
	   lyskom-reading-list)

	;; Tell server which conf the user is reading.
461
462
463
464
465
466
467
	(let ((conf-stat (read-info->conf-stat
			  (read-list->first lyskom-reading-list))))
	  (when conf-stat
	    (lyskom-enter-conf
	     conf-stat 
	     (read-list->first lyskom-reading-list))
	    (lyskom-set-mode-line conf-stat))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
468
    (lyskom-insert-string 'all-conf-unread-r)
469
    (lyskom-set-mode-line (lyskom-get-string 'all-conf-unread-s))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
470
471


472
(defun lyskom-maybe-move-unread (bury)
Linus Tolke's avatar
Linus Tolke committed
473
  "Empty the reading list.
474
If the argument BURY is non-nil and there are unread artilces left in the
Linus Tolke's avatar
Linus Tolke committed
475
reading list then the conf is inserted last in the to do list."
Per Cederqvist's avatar
.    
Per Cederqvist committed
476
477
  (if (not (read-list-isempty lyskom-reading-list))
      (progn
478
	(if bury
Per Cederqvist's avatar
.    
Per Cederqvist committed
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
	    (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))))


(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"
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
  ;;
  ;; Deal with special membership types
  ;;
  (let ((mship (lyskom-get-membership (conf-stat->conf-no conf-stat))))
    (when mship

      ;; Check for invitation

      (when (membership-type->invitation (membership->type mship))
        (lyskom-format-insert 'your-invited
                              conf-stat
                              (membership->created-by mship))
        (when (lyskom-j-or-n-p (lyskom-get-string 'accept-invitation))
          (set-membership-type->invitation (membership->type mship)
                                           nil)
          (initiate-set-membership-type
           'main
           nil
           lyskom-pers-no
           (conf-stat->conf-no conf-stat)
           (membership->type mship))))

      ;; Check for going to passive membership

      (when (membership-type->passive (membership->type mship))
        (lyskom-format-insert 'enter-passive conf-stat))))

David Byers's avatar
David Byers committed
532
533
534
  (lyskom-run-hook-with-args 'lyskom-change-conf-hook
                             lyskom-current-conf
                             (conf-stat->conf-no conf-stat))
Per Cederqvist's avatar
.    
Per Cederqvist committed
535
536
  (initiate-pepsi 'main nil (conf-stat->conf-no conf-stat))
  (setq lyskom-current-conf (conf-stat->conf-no conf-stat))
537
  (let ((num-unread (text-list->length (read-info->text-list read-info))))
538
539
540
541
542
543
544
    (lyskom-format-insert (if (not kom-print-number-of-unread-on-entrance)
			      'enter-conf
			    (if (= num-unread 1)
				'one-unread
			      'several-unread))
			  conf-stat
			  num-unread)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
545
546
547
548
549
550
  



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

551
552
553
;;; in vars.el:
;(defvar lyskom-sessions-with-unread nil
;  "Global variable. List of lyskom-sessions with unread articles.")
554
555
556
557
558
559
560
;;;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
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576

(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 "")))
	(unread -1)
577
	(total-unread 0)
578
	(letters 0)
579
	(len 0)
Per Cederqvist's avatar
.    
Per Cederqvist committed
580
581
582
	(read-info-list nil))

    (if (null name)
583
584
585
586
587
588
589
590
	nil				; We didn't have the name.

      ;; Set unread to the number of unread texts in CONF.
      (if (lyskom-conf-stat-p conf)
	  (progn
	    (setq read-info-list 
		  (read-list->all-entries lyskom-to-do-list))

David Kågedal's avatar
David Kågedal committed
591
592
	    ;; This was weird. Someone had begun to write an if, but
	    ;; this was all there was: (if 
593
594
595
	    (while read-info-list
	      (if (read-info->conf-stat (car read-info-list))
		  (progn
596
597
		    (setq len (text-list->length
			       (read-info->text-list (car read-info-list))))
598
599
600
601
		    (if (= (conf-stat->conf-no conf)
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq unread len))
602
603
604
605
		    (if (= lyskom-pers-no
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq letters len))
606
		    (setq total-unread (+ total-unread len))))
David Kågedal's avatar
David Kågedal committed
607
	      (setq read-info-list (cdr read-info-list)))))
608
609
      (if (= unread -1)
	  (setq unread 0))
David Kågedal's avatar
David Kågedal committed
610
      
611
612
613
      (if (null name)
	  nil
	(setq mode-line-conf-name 
David Kågedal's avatar
David Kågedal committed
614
615
616
617
618
619
620
621
622
623
	      (substring (concat
			  (if (lyskom-conf-stat-p conf)
			      (if (> lyskom-session-priority 0)
				  (format "(%d/%d:%d) "
					  unread total-unread
					  lyskom-session-priority)
				(format "(%d/%d) " unread total-unread))
			    "")
			  name
			  (make-string 27 ? ))
624
			 0 27)))
David Kågedal's avatar
David Kågedal committed
625
      
626
627
      (if (zerop total-unread)
	  (setq lyskom-sessions-with-unread
628
629
		(delq lyskom-buffer lyskom-sessions-with-unread))
	(or (memq lyskom-buffer lyskom-sessions-with-unread)
630
	    (setq lyskom-sessions-with-unread
631
		  (cons lyskom-buffer lyskom-sessions-with-unread))))
632
633
      (if (zerop letters)
	  (setq lyskom-sessions-with-unread-letters
634
635
		(delq lyskom-buffer lyskom-sessions-with-unread-letters))
	(or (memq lyskom-buffer lyskom-sessions-with-unread-letters)
636
	    (setq lyskom-sessions-with-unread-letters
637
		  (cons lyskom-buffer lyskom-sessions-with-unread-letters)))))
David Kågedal's avatar
David Kågedal committed
638
    (force-mode-line-update)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
639
640
641
642
643
644
645


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

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


646
(defun lyskom-try-get-membership (conf-no)
Per Cederqvist's avatar
.    
Per Cederqvist committed
647
  "Returns non-nil if conference CONF-NO is present on lyskom-membership.
648
649
650
651
652
653
The value is actually the membership for the conference.

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

This function does not use blocking-do."
Per Cederqvist's avatar
.    
Per Cederqvist committed
654
655
656
657
658
659
660
661
662
  (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)))
    found))


663
664
665
666
667
(defun lyskom-get-membership (conf-no)
  "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
668
found in lyskom-membership, a blocking call to the server is made."
669
670
671
672
673
674
675
676
677
  (or (lyskom-try-get-membership conf-no)
      (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))
	     membership))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
678
679
680
681
;;;; ================================================================
;;;;                   Scrolling and text insertion.


David Kågedal's avatar
David Kågedal committed
682
683
684
685
686
(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))
687
688
	(let ((delchars (- (buffer-size) kom-max-buffer-size))
	      (inhibit-read-only t))
David Kågedal's avatar
David Kågedal committed
689
690
691
692
693
	  (goto-char (point-min))
	  (while (< (point) delchars)
	    (forward-line 1))
	  (delete-region (point-min) (point))))))

Per Cederqvist's avatar
.    
Per Cederqvist committed
694
695
696
697
698
699
700
701
702
703
704
(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
705
706
707
708
709
710
711
712
713
714
    (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
715
716
717
718
719
720
721
722
		(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
723
	
David Byers's avatar
David Byers committed
724
725
726
727
728
729
730
731
732
733
734
;;;
;;; 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
735

736
(defun lyskom-do-insert (string)
David Byers's avatar
David Byers committed
737
  (let ((start (point)))
738
739
740
741
742
743
744
745
746
747
748
749
    (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
750
          (error (apply 'message "%S" val)))
751
752
753
754
755
        (setq start next)
        (setq bounds (next-text-property-bounds 1 start
                                                'special-insert))))
    ))

David Byers's avatar
David Byers committed
756
757


Per Cederqvist's avatar
.    
Per Cederqvist committed
758
759
(defun lyskom-insert (string)
  "Insert STRING last in current buffer.
760
761
762
763
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
is not on screen then doesn't move point.
764
The text is converted according to the value of kom-emacs-knows-iso-8859-1."
David Kågedal's avatar
David Kågedal committed
765
766
767
  (let ((was-at-max (= (save-excursion (end-of-line) (point)) (point-max))))
    (save-excursion
      (goto-char (point-max))
768
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
769
        (lyskom-do-insert string))
David Kågedal's avatar
David Kågedal committed
770
771
772
773
774
775
      (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)))))))
776

Per Cederqvist's avatar
.    
Per Cederqvist committed
777

David Byers's avatar
David Byers committed
778

779
780
781
782
(defun lyskom-insert-at-point (string)
  "Insert STRING in the current buffer at point.
The text is converted according to the value of
kom-emacs-knows-iso-8859-1."
783
  (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
784
    (lyskom-do-insert string))
785
786
  (lyskom-trim-buffer))  

Per Cederqvist's avatar
.    
Per Cederqvist committed
787
788
789
790

(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.
791
The strings buffered are printed before the prompt by lyskom-update-prompt."
792
793
794
795
796
797
798
799
800
801
802
803
  ;;
  ;; 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
804
805
  (cond
   ((and lyskom-executing-command
806
         (not (eq lyskom-is-waiting t)))
Per Cederqvist's avatar
Per Cederqvist committed
807
808
    ;; Don't insert the string until the current command is finished.
    (if (null lyskom-to-be-printed-before-prompt)
809
        (setq lyskom-to-be-printed-before-prompt (lyskom-queue-create)))
810
    (lyskom-queue-enter lyskom-to-be-printed-before-prompt 
811
                        (list string)))
812
   (t
813
814
    ;; For some reaseon save-excursion doesn't work as expected
    (let ((oldpoint (point-marker)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
815
      (goto-char (point-max))
816
817
      (beginning-of-line)
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
818
	(lyskom-do-insert string))
819
      (goto-char oldpoint))
820
821
822
823
    (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
824
825
826
	  (save-selected-window
	    (select-window window)
	    (recenter -1)))))))
827
      
Per Cederqvist's avatar
.    
Per Cederqvist committed
828
829
830
831
832

(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)))
833
    (message "%s" str)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
834
835


836
837
838
839
(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)))
840
    (error "%s" str)))
841
842


Lars Willför's avatar
Lars Willför committed
843
844
845
846
847
848
(defun lyskom-set-last-viewed ()
  (save-excursion
    (vertical-motion 0)
    (setq lyskom-last-viewed (point))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
849
850
851
;;; ================================================================
;;;                  Extended string formatting

852
853
854
;;; Author: David Byers
;;; Original code: Inge Wallin

Per Cederqvist's avatar
.    
Per Cederqvist committed
855

856
(defvar lyskom-format-format
David Byers's avatar
David Byers committed
857
  "%\\(=\\)?\\(-?[0-9]+\\)?\\(#\\([0-9]+\\)\\)?\\(:\\)?\\([][@MmPpnrtsdoxcCSD]\\)"
858
  "regexp matching format string parts.")
Per Cederqvist's avatar
.    
Per Cederqvist committed
859
860
861
862
863

(defun lyskom-insert-string (atom)
 "Find the string corresponding to ATOM and insert it into the LysKOM buffer." 
  (lyskom-insert (lyskom-get-string atom)))

864
865
866
867
868
869
870
871
872
873
;;(defun lyskom-get-string (atom &optional assoc-list)
;;  "Get the string corresponding to ATOM and return it."
;;  (if (stringp atom)
;;	atom
;;    (let ((format-pair (assoc atom (or assoc-list lyskom-strings))))
;;	(if (null format-pair)
;;	    (signal 'lyskom-internal-error 
;;		    (list 'lyskom-get-string
;;			  (list atom ": string not found")))
;;	  (cdr format-pair)))))
874
875
876


(defun lyskom-format (format-string &rest argl)
877
  (format-state->result (lyskom-do-format format-string argl)))
878
879

(defun lyskom-format-insert (format-string &rest argl)
880
881
  "Format and insert a string according to FORMAT-STRING.
The string is inserted at the end of the buffer with `lyskom-insert'."
882
  (let* ((state (lyskom-do-format format-string argl t))
David Kågedal's avatar
David Kågedal committed
883
884
885
	 ;; We have to use a marker, because lyskom-insert may trim
	 ;; the buffer size.
	 (start (point-max-marker))
886
	 (deferred (format-state->delayed-content state)))
887
    (lyskom-insert (format-state->result state))
888
889
890
891
892
893
    (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
894
895
	(setq deferred (cdr deferred))))
    (set-marker start nil)))
896

897
898
899
900
901
(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))
902
	 (deferred (format-state->delayed-content state)))
903
    (lyskom-insert-at-point (format-state->result state))
904
905
906
907
908
909
910
    (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))))))
911

912
(defun lyskom-format-insert-before-prompt (format-string &rest argl)
David Kågedal's avatar
David Kågedal committed
913
914
915
916
917
918
919
920
  "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))))
921
922


David Kågedal's avatar
David Kågedal committed
923
(defun lyskom-do-format (format-string &optional argl allow-defer)
924
  "Do the actual formatting and return the resulting format-state."
925
926
927
928
929
930
931
932
  (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
933
934
        (if (and (boundp 'lyskom-buffer)
		 lyskom-buffer)
David Kågedal's avatar
David Kågedal committed
935
            (set-buffer lyskom-buffer))
David Kågedal's avatar
David Kågedal committed
936
937
938
939
940
	(condition-case error
	    (setq state (lyskom-format-aux (make-format-state
					    fmt
					    0
					    argl
941
					    "")
David Kågedal's avatar
David Kågedal committed
942
					   allow-defer))
David Kågedal's avatar
David Kågedal committed
943
944
945
	  (lyskom-format-error
	   (error "LysKOM internal error formatting %s: %s%s"
		  format-string (nth 1 error) (nth 2 error))))))
946
    state))
947
948
949



David Byers's avatar
David Byers committed
950
951
952
953
954
;;;
;;; If you add a format letter, for goodness' sake, don't forget to
;;; att it to the regexp above too!
;;;

955
956


David Kågedal's avatar
David Kågedal committed
957
(defun lyskom-format-aux (format-state allow-defer)
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
  (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)
        (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)
1007
1008
1009
1010
1011
1012
1013
	      pad-length (if (match-beginning 2)
			     (string-to-int (substring 
					     (format-state->format-string
					      format-state)
					     (match-beginning 2)
					     (match-end 2)))
			   nil)
1014
	      arg-no (if (match-beginning 4)
1015
1016
1017
1018
1019
			 (string-to-int (substring (format-state->format-string
						    format-state)
						   (match-beginning 4)
						   (match-end 4)))
		       nil)
1020
1021
	      colon-flag (match-beginning 5)
	      format-letter (if (match-beginning 6)
1022
1023
1024
1025
1026
1027
1028
				(aref (format-state->format-string 
				       format-state)
				      (match-beginning 6))
			      (signal 'lyskom-internal-error
				      (list 'lyskom-format-aux 
					    (format-state->format-string
					     format-state)))))
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052

    ;;
    ;;  If the format letter is an end-of-group letter, abort
    ;;  formatting and return to the caller.
    ;;

	(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
             (if (and (match-beginning 2)
                      (eq (aref (format-state->format-string format-state)
                                (match-beginning 2))
                          ?0))
                 ?0
1053
               ? )
David Kågedal's avatar
David Kågedal committed
1054
	     allow-defer))))))
1055
1056
1057
1058
1059
1060
1061
1062
1063
  (lyskom-tweak-format-state format-state))


(defun lyskom-format-aux-help (format-state
                               pad-length
                               arg-no
                               format-letter
                               equals-flag
                               colon-flag
1064
                               pad-letter
David Kågedal's avatar
David Kågedal committed
1065
			       allow-defer)
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
  (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
1077
        (signal 'lyskom-format-error (list 'lyskom-format
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
                                             ": 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
1095
                         (t (signal 'lyskom-format-error
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
                                    (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)
      (setq result (if (integerp arg)
                       (char-to-string arg)
                     (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error")))))
     ;;
     ;;  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
1128
1129
1130
1131
1132
1133
1134
1135
     ;;
     ;;  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
1136
                         ((and arg (symbolp arg))
1137
                          (if (memq arg lyskom-commands)
David Byers's avatar
David Byers committed
1138
1139
			      (lyskom-command-name arg)
			    (prin1-to-string arg t)))
David Byers's avatar
David Byers committed
1140
                         (t (format "(%S)" arg)))))
David Byers's avatar
David Byers committed
1141
1142
1143
1144
1145
1146
1147

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

1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
     ;;
     ;;  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
1163
1164
1165
1166
1167
1168
1169
1170
     ;;  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.
     ;;
1171
     ((= format-letter ?\[)
David Kågedal's avatar
David Kågedal committed
1172
      (setq format-state (lyskom-format-aux format-state allow-defer)
1173
1174
1175
1176
1177
1178
1179
1180
1181
            result nil))
     ;;
     ;;  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
1182
            (cond
1183
1184
1185
1186
1187
1188
             ;; The string is already supplied
             ((stringp arg) arg)

             ;; Conference 0 does not exist, and person 0 means anonymous
             ((and (integerp arg)
                   (zerop arg))
1189
	      (setq colon-flag t)
David Byers's avatar
X    
David Byers committed
1190
1191
1192
1193
1194
1195
1196
              (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)
1197
	      )
1198
1199

             ;; Delay the printing
David Kågedal's avatar
David Kågedal committed
1200
             ((and allow-defer
1201
                   kom-deferred-printing
1202
1203
1204
                   (integerp arg))
              (let ((tmp (cache-get-conf-stat arg)))
                (if (null tmp)
1205
                    (let* ((format-element
1206
			    (concat "%#2@%"
1207
1208
1209
1210
1211
1212
				    (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
1213
					'get-conf-stat
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
					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
1227
                       format-state
1228
                       (cons defer-info
1229
1230
                             (format-state->delayed-content
                              format-state)))
1231
                      lyskom-defer-indicator)
1232
                  (setq arg tmp)
1233
1234
                  (let ((aux (conf-stat-find-aux arg
                                                 10 
1235
1236
1237
1238
1239
1240
1241
1242
1243
                                                 lyskom-pers-no))
                        (face (conf-stat-find-aux arg
                                                  9)))
                    (lyskom-maybe-add-face-to-string
                     face
                     (if aux
                         (concat (aux-item->data (car aux)) " *")
                      (conf-stat->name arg))))
                  )))
David Kågedal's avatar
David Kågedal committed
1244
	     
1245
1246
1247
1248
1249
1250
1251
1252
             ;; Find the name and return it
             ((integerp arg)
              (let ((conf-stat (blocking-do 'get-conf-stat arg)))
                (if (null conf-stat)
                    (lyskom-format (if (= format-letter ?P)
                                       'person-does-not-exist
                                     'conference-does-not-exist)
                                   arg)
1253
1254
1255
1256
                  (let ((aux (conf-stat-find-aux conf-stat 10 lyskom-pers-no)))
                    (if aux
                        (concat (aux-item->data (car aux)) " *")
                      (conf-stat->name conf-stat))))))
David Kågedal's avatar
David Kågedal committed
1257
	     
1258
             ;; We got a conf-stat, and can use it directly
1259
1260
1261
1262
1263
             ((lyskom-conf-stat-p arg)
                  (let ((aux (conf-stat-find-aux arg 10 lyskom-pers-no)))
                    (if aux
                        (concat (aux-item->data (car aux)) " *")
                      (conf-stat->name arg))))
David Kågedal's avatar
David Kågedal committed
1264

1265
1266
1267
1268
             ;; Something went wrong
             (t (signal 'lyskom-internal-error
                        (list 'lyskom-format
                              ": argument error")))))
1269
      (if (and (not colon-flag)
1270
1271
               (or (lyskom-conf-stat-p arg)
                   (numberp arg)))
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
          (setq propl 
                (append
                 (lyskom-default-button (if (= format-letter ?P) 'pers 'conf)
                                        arg)
                 propl))))
     ;;
     ;;  Format a conference or person number the same way as names,
     ;;  but insert the number rather than the name
     ;;
     ((or (= format-letter ?m)
          (= format-letter ?p))
      (setq result
            (cond ((integerp arg) 
1285
		   (int-to-string arg))
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
                  ((lyskom-conf-stat-p arg) 
                   (int-to-string (conf-stat->conf-no arg)))
                  (t (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error")))))
      (if (not colon-flag)
          (setq propl 
                (append 
                 (lyskom-default-button (if (= format-letter ?p) 'pers 'conf)
                                        arg)
                 propl))))
     ;;
     ;;  Format an integer or text-stat as a text number by adding the
     ;;  by inserting a button (unless the colon flag is set)
     ;;
     ((= format-letter ?n)
      (setq result
            (cond ((integerp arg) (int-to-string arg))
                  ((lyskom-text-stat-p arg) (int-to-string
                                             (text-stat->text-no arg)))
                  (t (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error")))))
      (if (not colon-flag)
          (setq propl
                (append (lyskom-default-button 'text arg) propl))))
     ;;
     ;;  Format a subject line by adding the subject face to the text
     ;;  properties and the subject to the result list
     ;;
     ((= format-letter ?r)
1317
      (setq result (cond ((stringp arg) (lyskom-button-transform-text arg))
1318
1319
1320
                         (t (signal 'lyskom-internal-error
                                    (list 'lyskom-format
                                          ": argument error")))))
David Byers's avatar
David Byers committed
1321
      (if (and (not colon-flag)
1322
               (not (lyskom-face-default-p 'kom-subject-face)))
1323
1324
1325
1326
1327
1328
          (setq propl (append (list 'face 'kom-subject-face) propl))))
     ;;
     ;;  Format a LysKOM text body. Currently this does nothing. It
     ;;  should parse the text for buttons
     ;;
     ((= format-letter ?t)
David Kågedal's avatar
David Kågedal committed
1329
1330
1331
1332
1333
1334
1335
1336

      ;; +++ One would want to do this before or after, but then
      ;; buttons will not be visible and other highlighting will
      ;; disappear.

      ;; (if (not colon-flag)
      ;;     (setq propl (append (list 'face 'kom-text-face) propl)))

1337
      (setq result
1338
            (cond ((stringp arg) (lyskom-format-text-body arg))
1339
                  ((lyskom-text-p arg) 
David Byers's avatar
David Byers committed
1340
                   (lyskom-format-text-body (text->text-mass arg)))
1341
1342
1343
1344
                  ((and (consp arg)
                        (lyskom-text-stat-p (car arg)))
                   (lyskom-format-text-body (cdr arg)
                                            (car arg)))
1345
1346
1347
                  (t (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error"))))))
David Kågedal's avatar
David Kågedal committed
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384


     ;;
     ;; Insert some deferred text
     ;;
     ((= format-letter ?D)
      (setq result
	    (cond
	     ((stringp arg) arg)
	     (t
	      (let ((format-element
		     (concat "%"
			     (if equals-flag "=" "")
			     (if pad-length (int-to-string pad-length))
			     "#1"
			     (if colon-flag ":" "")
			     "s")))
		(set-defer-info->pos arg oldpos)
		(set-defer-info->del-chars
		 arg (if pad-length
			 (if equals-flag
			     (abs pad-length)
			   (max (length
				 lyskom-defer-indicator)
				(abs pad-length)))
		       (length lyskom-defer-indicator)))
		(set-defer-info->format arg format-element))
	      (set-format-state->delayed-content
	       format-state
	       (cons arg
		     (format-state->delayed-content
		      format-state)))
	      lyskom-defer-indicator))))

     ;;
     ;; The format letter was unknown
     ;;
1385
1386
     
     (t (signal 'lyskom-internal-error
David Kågedal's avatar
David Kågedal committed
1387
		(list 'lyskom-format-help format-letter))))
1388
1389
1390
1391
1392
1393
1394
1395
1396
1397
1398
    
    ;;
    ;; Pad the result to the appropriate length
    ;; Fix flags so text props go in the right places anyway
    ;;
    
    (cond ((or (null pad-length)
               (null result)) nil)
          ((> abs-length (length result))
           (let ((padstring (make-string (- abs-length (length result))
                                         pad-letter)))
David Byers's avatar
David Byers committed
1399
1400
1401
1402
1403
1404
1405
             (if (< pad-length 0)       ; LEFT justify
                 (progn
                   (setq prop-adjust-end (- (- abs-length (length result))))
                   (setq result (concat result padstring)))
               (progn
                 (setq prop-adjust-start (- abs-length (length result)))
                 (setq result (concat padstring result))))))
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
          ((and equals-flag
                (< abs-length (length result)))
           (setq result (substring result 0 abs-length))))
    
    (if result
        (progn
          (set-format-state->result 
           format-state
           (concat (format-state->result format-state)
                   result))))
    (if (and propl kom-text-properties)
        (add-text-properties
         (+ oldpos prop-adjust-start)
         (+ (length (format-state->result format-state)) prop-adjust-end)
         propl
         (format-state->result format-state))))
  format-state)




(defun lyskom-tweak-format-state (format-state) 
  (let ((dp (format-state->delayed-propl format-state)))
    (while dp
1430
      (add-text-properties (car (car dp))
1431
                           (length (format-state->result format-state))
1432
                           (cdr (car dp))
1433
1434
1435
1436
                           (format-state->result format-state))
      (setq dp (cdr dp)))
    (set-format-state->delayed-propl format-state nil))
  format-state)
Per Cederqvist's avatar
.    
Per Cederqvist committed
1437
1438


1439
1440
1441
1442
1443
;;; ================================================================
;;;			 Text body formatting

;;; Author: David K}gedal
;;; This should be considered an experiment
David Byers's avatar
David Byers committed
1444

1445
(lyskom-external-function w3-fetch)
David Byers's avatar
David Byers committed
1446
(lyskom-external-function w3-region)
1447

1448
(defun lyskom-format-text-body (text &optional text-stat)
David Kågedal's avatar
David Kågedal committed
1449
  "Format a text for insertion. Does parsing of special markers in the text."
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
1461
  (let* ((ct-item (car (text-stat-find-aux text-stat 1)))
         (content-type (cond (ct-item (aux-item->data ct-item))
                             ((and (string-match "^\\(\\S-+\\):" text)
                                   (match-beginning 1))
                              (match-string 1 text))
                             (t nil)))
         (fn (and content-type
                  (cdr 
                   (let ((tmp lyskom-format-special)
                         (result nil)
                         (case-fold-search t))