lyskom-rest.el 103 KB
Newer Older
Linus Tolke's avatar
Linus Tolke committed
1
2
;;;;;
;;;;; $Id$
3
;;;;; Copyright (C) 1991, 1996  Lysator Academic Computer Association.
Linus Tolke's avatar
Linus Tolke committed
4
5
6
7
8
;;;;;
;;;;; 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 
9
;;;;; the Free Software Foundation; either version 2, or (at your option) 
Linus Tolke's avatar
Linus Tolke committed
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
;;;;; any later version.
;;;;; 
;;;;; LysKOM is distributed in the hope that it will be useful, but WITHOUT
;;;;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
;;;;; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
;;;;; for more details.
;;;;; 
;;;;; You should have received a copy of the GNU General Public License
;;;;; along with LysKOM; see the file COPYING.  If not, write to
;;;;; Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
;;;;; or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
;;;;; MA 02139, USA.
;;;;;
;;;;; Please mail bug reports to bug-lyskom@lysator.liu.se. 
;;;;;
Per Cederqvist's avatar
.    
Per Cederqvist committed
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
;;;; ================================================================
;;;; ================================================================
;;;;
;;;; 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
45
46
;;;;    David K}gedal
;;;;    David Byers
Per Cederqvist's avatar
.    
Per Cederqvist committed
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
;;;;   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.
;;;;

77
78
79
80
(eval-when-compile
  (require 'lyskom-command "command")
  (require 'lyskom-menus "menus")
  (require 'lyskom-clienttypes "clienttypes.el"))
David Kågedal's avatar
David Kågedal committed
81
82


83
84
85
86
(setq lyskom-clientversion-long 
      (concat lyskom-clientversion-long
	      "$Id$\n"))

87
88
(lyskom-external-function find-face)

89

Per Cederqvist's avatar
.    
Per Cederqvist committed
90
91
92
93
94
95
96
97
98
99
100
101
102
103
;;;; ================================================================
;;;;                             New errors.


(put 'lyskom-protocol-error 'error-conditions
     '(error lyskom-error lyskom-protocol-error))
(put 'lyskom-protocol-error 'error-message
     "LysKOM protocol error:")

(put 'lyskom-internal-error 'error-conditions
     '(error lyskom-error lyskom-internal-error))
(put 'lyskom-internal-error 'error-message
     "Internal LysKOM error.")

David Kågedal's avatar
David Kågedal committed
104
105
106
107
108
(put 'lyskom-format-error 'error-conditions
     '(error lyskom-error lyskom-format-error))
(put 'lyskom-internal-error 'error-message
     "Internal LysKOM format error.")

Per Cederqvist's avatar
.    
Per Cederqvist committed
109

110
111
112
113
114
115
;;; ================================================================
;;;             Global variables
;;;

(defvar lyskom-unread-mode-line nil)

Per Cederqvist's avatar
.    
Per Cederqvist committed
116
117
118
119
120
121
122
123
124
125
;;; ================================================================
;;;             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."
126
127
128
129
130
  (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
131

132
(defun lyskom-report-command-answer (answer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
133
134
135
136
137
138
  "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)
139
			  lyskom-errno)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
140
141
142
143
144


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

David Kågedal's avatar
David Kågedal committed
145
(defsubst lyskom-tell-string (key)
Per Cederqvist's avatar
.    
Per Cederqvist committed
146
147
  "Retrieve the phrase indexed by the key from the kom-tell-phrases
assoc list."
David Kågedal's avatar
David Kågedal committed
148
  (lyskom-get-string key 'kom-tell-phrases))
Per Cederqvist's avatar
.    
Per Cederqvist committed
149
150
151
152


(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
153
154
155
  ;; 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
156
157
158
159
160
161
  (lyskom-tell-server (lyskom-tell-string key)))



;;; Resume operation after a crash.

David Kågedal's avatar
David Kågedal committed
162
163
164
165
(defun kom-recover (&optional refetch)
  "Try to recover from an error.
If the optional argument REFETCH is non-nil, `lyskom-refetch' is called."
  (interactive "p")
David Kågedal's avatar
Bugfix    
David Kågedal committed
166
  (lyskom-init-parse lyskom-buffer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
167
168
  (setq lyskom-call-data nil)
  (setq lyskom-pending-calls nil)
David Kågedal's avatar
David Kågedal committed
169
170
171
172
173
  (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
174
175
  (setq lyskom-number-of-pending-calls 0)
  (setq lyskom-is-parsing nil)
David Kågedal's avatar
David Kågedal committed
176
  (if refetch (lyskom-refetch))
Per Cederqvist's avatar
.    
Per Cederqvist committed
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
  (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
192
	(goto-char (point-max))
Per Cederqvist's avatar
.    
Per Cederqvist committed
193
	(recenter 0)
Lars Willför's avatar
Lars Willför committed
194
	(lyskom-next-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
195
196
    (recenter 0)
    (move-to-window-line -1)
Lars Willför's avatar
Lars Willför committed
197
    (lyskom-set-last-viewed)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
198
199


200
;;; Author: Lars Willf|r
Per Cederqvist's avatar
.    
Per Cederqvist committed
201
202
203
204

(defun kom-next-command ()
  "Run next command or scroll one page."
  (interactive)
Lars Willför's avatar
Lars Willför committed
205
206
207
208
  (if (pos-visible-in-window-p (point-max))
      (lyskom-next-command)
    (move-to-window-line -1)
    (lyskom-set-last-viewed)
209
210
211
212
213
214
215
216
217
218
219
220
    (lyskom-scroll)
    (if (< (window-start) lyskom-last-viewed)
        (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
221
222
223
224
225

  
(defun kom-line-next-command ()
  "Run next command or scroll one line."
  (interactive)
Lars Willför's avatar
Lars Willför committed
226
227
228
229
230
  (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
231
232


233
234
;;; Author: Per Cederqvist

Lars Willför's avatar
Lars Willför committed
235
(defun lyskom-next-command ()
236
  "Run next command."
237
  (let ((lyskom-doing-default-command t))
238
239
240
241
242
243
244
245
246
247
248
249
    (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
250
251
	 ((or (stringp command)
              (vectorp command))
252
	  (execute-kbd-macro command))
David Byers's avatar
David Byers committed
253
254
         ((commandp command) (call-interactively command))
         (t (lyskom-start-of-command nil) (lyskom-end-of-command)))))
255
256
257
258
     ((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
259
260
261
262
263
264
265
266


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


(defun kom-initial-digit-view ()
  (interactive)
267
268
  (setq unread-command-events (cons last-command-event
                                    unread-command-events))
Per Cederqvist's avatar
.    
Per Cederqvist committed
269
270
271
272
273
274
  (call-interactively 'kom-view nil))


(defun kom-view (text-no)
  "View text number TEXT-NO."
  (interactive "P")
275
276
277
278
279
280
281
282
283
284
285
286
287
288
  (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
289
	    (recenter 1))
290
291
292
293
	(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
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321


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


322
323
;;; Modified to handle filters

David Kågedal's avatar
David Kågedal committed
324
(def-kom-command kom-view-next-text ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
325
326
  "Display next text (from lyskom-reading-list)."
  (interactive)
David Kågedal's avatar
David Kågedal committed
327
328
329
330
331
332
333
334
335
  (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))
336
	      
David Kågedal's avatar
David Kågedal committed
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
	(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
360
361
362
363
364
				    (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))))))))
365
  
Per Cederqvist's avatar
.    
Per Cederqvist committed
366

367
;;; Modified to handle filters
Per Cederqvist's avatar
.    
Per Cederqvist committed
368

David Kågedal's avatar
David Kågedal committed
369
;; This is horribly ugly. It acts like a user command, but it isn't.
Per Cederqvist's avatar
.    
Per Cederqvist committed
370
371
372
(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
373
374
375
376
377
378
379
380
381
382
383
384
  (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
385
386
387


(defun lyskom-is-read (text-no)
Per Cederqvist's avatar
Per Cederqvist committed
388
  "Remove TEXT-NO from the list of texts to read.
Per Cederqvist's avatar
.    
Per Cederqvist committed
389
Deletes TEXT-NO from lyskom-reading-list and lyskom-to-do-list.
Per Cederqvist's avatar
Per Cederqvist committed
390
391
392
Adds info in lyskom-membership.

This function only modifies the internal state of the client. It does
Per Cederqvist's avatar
Per Cederqvist committed
393
394
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
395
396
  (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
397
  (initiate-get-text-stat 'main 'lyskom-is-read-handler text-no)
398
  (setq lyskom-normally-read-texts (cons text-no lyskom-normally-read-texts)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
399
400
401
402
403


(defun lyskom-is-read-handler (text-stat)
  "Update lyskom-membership for all recipients to TEXT-STAT."
  (lyskom-traverse
404
405
      misc (text-stat->misc-info-list text-stat)
    (if (or (eq 'RECPT (misc-info->type misc))
David Byers's avatar
David Byers committed
406
            (eq 'BCC-RECPT (misc-info->type misc))
407
	    (eq 'CC-RECPT (misc-info->type misc)))
408
409
	(let ((membership (lyskom-try-get-membership
			   (misc-info->recipient-no misc))))
410
411
412
413
414
	  (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
415
416
417
418
419
420


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


421
(def-kom-command kom-go-to-next-conf ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
  "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)
437
438
  (lyskom-go-to-next-conf)
  (lyskom-end-of-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
439
440
441
442
443
444
445
446
447
448
449
450


(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.
451
452
453
454
455
456
457
	(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
458
    (lyskom-insert-string 'all-conf-unread-r)
459
    (lyskom-set-mode-line (lyskom-get-string 'all-conf-unread-s))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
460
461


462
(defun lyskom-maybe-move-unread (bury)
Linus Tolke's avatar
Linus Tolke committed
463
  "Empty the reading list.
464
If the argument BURY is non-nil and there are unread artilces left in the
Linus Tolke's avatar
Linus Tolke committed
465
reading list then the conf is inserted last in the to do list."
Per Cederqvist's avatar
.    
Per Cederqvist committed
466
467
  (if (not (read-list-isempty lyskom-reading-list))
      (progn
468
	(if bury
Per Cederqvist's avatar
.    
Per Cederqvist committed
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
	    (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"
David Byers's avatar
David Byers committed
495
496
497
  (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
498
499
  (initiate-pepsi 'main nil (conf-stat->conf-no conf-stat))
  (setq lyskom-current-conf (conf-stat->conf-no conf-stat))
500
  (let ((num-unread (text-list->length (read-info->text-list read-info))))
501
502
503
504
505
506
507
    (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
508
509
510
511
512
513
  



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

514
515
516
;;; in vars.el:
;(defvar lyskom-sessions-with-unread nil
;  "Global variable. List of lyskom-sessions with unread articles.")
517
518
519
520
521
522
523
;;;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
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539

(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)
540
	(total-unread 0)
541
	(letters 0)
542
	(len 0)
Per Cederqvist's avatar
.    
Per Cederqvist committed
543
544
545
	(read-info-list nil))

    (if (null name)
546
547
548
549
550
551
552
553
	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
554
555
	    ;; This was weird. Someone had begun to write an if, but
	    ;; this was all there was: (if 
556
557
558
	    (while read-info-list
	      (if (read-info->conf-stat (car read-info-list))
		  (progn
559
560
		    (setq len (text-list->length
			       (read-info->text-list (car read-info-list))))
561
562
563
564
		    (if (= (conf-stat->conf-no conf)
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq unread len))
565
566
567
568
		    (if (= lyskom-pers-no
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq letters len))
569
		    (setq total-unread (+ total-unread len))))
David Kågedal's avatar
David Kågedal committed
570
	      (setq read-info-list (cdr read-info-list)))))
571
572
      (if (= unread -1)
	  (setq unread 0))
David Kågedal's avatar
David Kågedal committed
573
      
574
575
576
      (if (null name)
	  nil
	(setq mode-line-conf-name 
David Kågedal's avatar
David Kågedal committed
577
578
579
580
581
582
583
584
585
586
	      (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 ? ))
587
			 0 27)))
David Kågedal's avatar
David Kågedal committed
588
      
589
590
      (if (zerop total-unread)
	  (setq lyskom-sessions-with-unread
591
592
		(delq lyskom-buffer lyskom-sessions-with-unread))
	(or (memq lyskom-buffer lyskom-sessions-with-unread)
593
	    (setq lyskom-sessions-with-unread
594
		  (cons lyskom-buffer lyskom-sessions-with-unread))))
595
596
      (if (zerop letters)
	  (setq lyskom-sessions-with-unread-letters
597
598
		(delq lyskom-buffer lyskom-sessions-with-unread-letters))
	(or (memq lyskom-buffer lyskom-sessions-with-unread-letters)
599
	    (setq lyskom-sessions-with-unread-letters
600
		  (cons lyskom-buffer lyskom-sessions-with-unread-letters)))))
David Kågedal's avatar
David Kågedal committed
601
    (force-mode-line-update)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
602
603
604
605
606
607
608


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

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


609
(defun lyskom-try-get-membership (conf-no)
Per Cederqvist's avatar
.    
Per Cederqvist committed
610
  "Returns non-nil if conference CONF-NO is present on lyskom-membership.
611
612
613
614
615
616
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
617
618
619
620
621
622
623
624
625
  (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))


626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
(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
found inlyskom-membership, a blocking call to the server is made."
  (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
641
642
643
644
;;;; ================================================================
;;;;                   Scrolling and text insertion.


David Kågedal's avatar
David Kågedal committed
645
646
647
648
649
(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))
650
651
	(let ((delchars (- (buffer-size) kom-max-buffer-size))
	      (inhibit-read-only t))
David Kågedal's avatar
David Kågedal committed
652
653
654
655
656
	  (goto-char (point-min))
	  (while (< (point) delchars)
	    (forward-line 1))
	  (delete-region (point-min) (point))))))

Per Cederqvist's avatar
.    
Per Cederqvist committed
657
658
659
660
661
662
663
664
665
666
667
(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
668
669
670
671
672
673
674
675
676
677
    (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
678
679
680
681
682
683
684
685
		(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
686
	
David Byers's avatar
David Byers committed
687
688
689
690
691
692
693
694
695
696
697
;;;
;;; 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
698

David Byers's avatar
David Byers committed
699
(defsubst lyskom-do-insert (string)
David Byers's avatar
David Byers committed
700
  (let ((start (point)))
David Byers's avatar
David Byers committed
701
  (insert string)
David Byers's avatar
David Byers committed
702
703
704
705
706
707
708
709
710
      (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))
David Byers's avatar
David Byers committed
711
712
713
          (condition-case val
              (funcall fn (car bounds) (cdr bounds))
            (error (apply 'message (cdr val))))
David Byers's avatar
David Byers committed
714
715
716
          (setq start next)
          (setq bounds (next-text-property-bounds 1 start
                                                  'special-insert)))))
David Byers's avatar
David Byers committed
717
718
719
)


Per Cederqvist's avatar
.    
Per Cederqvist committed
720
721
(defun lyskom-insert (string)
  "Insert STRING last in current buffer.
722
723
724
725
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.
726
The text is converted according to the value of kom-emacs-knows-iso-8859-1."
David Kågedal's avatar
David Kågedal committed
727
728
729
  (let ((was-at-max (= (save-excursion (end-of-line) (point)) (point-max))))
    (save-excursion
      (goto-char (point-max))
730
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
731
        (lyskom-do-insert string))
David Kågedal's avatar
David Kågedal committed
732
733
734
735
736
737
      (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)))))))
738

Per Cederqvist's avatar
.    
Per Cederqvist committed
739

David Byers's avatar
David Byers committed
740

741
742
743
744
(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."
745
  (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
746
    (lyskom-do-insert string))
747
748
  (lyskom-trim-buffer))  

Per Cederqvist's avatar
.    
Per Cederqvist committed
749
750
751
752

(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.
753
The strings buffered are printed before the prompt by lyskom-update-prompt."
754
755
756
757
758
759
760
761
762
763
764
765
  ;;
  ;; 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
766
767
  (cond
   ((and lyskom-executing-command
768
         (not (eq lyskom-is-waiting t)))
Per Cederqvist's avatar
Per Cederqvist committed
769
770
    ;; Don't insert the string until the current command is finished.
    (if (null lyskom-to-be-printed-before-prompt)
771
        (setq lyskom-to-be-printed-before-prompt (lyskom-queue-create)))
772
    (lyskom-queue-enter lyskom-to-be-printed-before-prompt 
773
                        (list string)))
774
   (t
775
776
    ;; For some reaseon save-excursion doesn't work as expected
    (let ((oldpoint (point-marker)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
777
      (goto-char (point-max))
778
779
      (beginning-of-line)
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
780
	(lyskom-do-insert string))
781
      (goto-char oldpoint))
782
783
784
785
    (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
786
787
788
	  (save-selected-window
	    (select-window window)
	    (recenter -1)))))))
789
      
Per Cederqvist's avatar
.    
Per Cederqvist committed
790
791
792
793
794

(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)))
795
    (message "%s" str)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
796
797


798
799
800
801
(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)))
802
    (error "%s" str)))
803
804


Lars Willför's avatar
Lars Willför committed
805
806
807
808
809
810
(defun lyskom-set-last-viewed ()
  (save-excursion
    (vertical-motion 0)
    (setq lyskom-last-viewed (point))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
811
812
813
;;; ================================================================
;;;                  Extended string formatting

814
815
816
;;; Author: David Byers
;;; Original code: Inge Wallin

Per Cederqvist's avatar
.    
Per Cederqvist committed
817

818
(defvar lyskom-format-format
David Byers's avatar
David Byers committed
819
  "%\\(=\\)?\\(-?[0-9]+\\)?\\(#\\([0-9]+\\)\\)?\\(:\\)?\\([][@MmPpnrtsdoxcCSD]\\)"
820
  "regexp matching format string parts.")
Per Cederqvist's avatar
.    
Per Cederqvist committed
821
822
823
824
825

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

826
827
828
829
830
831
832
833
834
835
;;(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)))))
836
837
838


(defun lyskom-format (format-string &rest argl)
839
  (format-state->result (lyskom-do-format format-string argl)))
840
841

(defun lyskom-format-insert (format-string &rest argl)
842
843
  "Format and insert a string according to FORMAT-STRING.
The string is inserted at the end of the buffer with `lyskom-insert'."
844
  (let* ((state (lyskom-do-format format-string argl t))
David Kågedal's avatar
David Kågedal committed
845
846
847
	 ;; We have to use a marker, because lyskom-insert may trim
	 ;; the buffer size.
	 (start (point-max-marker))
848
	 (deferred (format-state->delayed-content state)))
849
    (lyskom-insert (format-state->result state))
850
851
852
853
854
855
    (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
856
857
	(setq deferred (cdr deferred))))
    (set-marker start nil)))
858

859
860
861
862
863
(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))
864
	 (deferred (format-state->delayed-content state)))
865
    (lyskom-insert-at-point (format-state->result state))
866
867
868
869
870
871
872
    (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))))))
873

874
(defun lyskom-format-insert-before-prompt (format-string &rest argl)
David Kågedal's avatar
David Kågedal committed
875
876
877
878
879
880
881
882
  "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))))
883
884


David Kågedal's avatar
David Kågedal committed
885
(defun lyskom-do-format (format-string &optional argl allow-defer)
886
  "Do the actual formatting and return the resulting format-state."
887
888
889
890
891
892
893
894
  (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
895
896
        (if (and (boundp 'lyskom-buffer)
		 lyskom-buffer)
David Kågedal's avatar
David Kågedal committed
897
            (set-buffer lyskom-buffer))
David Kågedal's avatar
David Kågedal committed
898
899
900
901
902
	(condition-case error
	    (setq state (lyskom-format-aux (make-format-state
					    fmt
					    0
					    argl
903
					    "")
David Kågedal's avatar
David Kågedal committed
904
					   allow-defer))
David Kågedal's avatar
David Kågedal committed
905
906
907
	  (lyskom-format-error
	   (error "LysKOM internal error formatting %s: %s%s"
		  format-string (nth 1 error) (nth 2 error))))))
908
    state))
909
910
911



David Byers's avatar
David Byers committed
912
913
914
915
916
;;;
;;; If you add a format letter, for goodness' sake, don't forget to
;;; att it to the regexp above too!
;;;

917
918


David Kågedal's avatar
David Kågedal committed
919
(defun lyskom-format-aux (format-state allow-defer)
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
  (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)
969
970
971
972
973
974
975
	      pad-length (if (match-beginning 2)
			     (string-to-int (substring 
					     (format-state->format-string
					      format-state)
					     (match-beginning 2)
					     (match-end 2)))
			   nil)
976
	      arg-no (if (match-beginning 4)
977
978
979
980
981
			 (string-to-int (substring (format-state->format-string
						    format-state)
						   (match-beginning 4)
						   (match-end 4)))
		       nil)
982
983
	      colon-flag (match-beginning 5)
	      format-letter (if (match-beginning 6)
984
985
986
987
988
989
990
				(aref (format-state->format-string 
				       format-state)
				      (match-beginning 6))
			      (signal 'lyskom-internal-error
				      (list 'lyskom-format-aux 
					    (format-state->format-string
					     format-state)))))
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014

    ;;
    ;;  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
1015
               ? )
David Kågedal's avatar
David Kågedal committed
1016
	     allow-defer))))))
1017
1018
1019
1020
1021
1022
1023
1024
1025
  (lyskom-tweak-format-state format-state))


(defun lyskom-format-aux-help (format-state
                               pad-length
                               arg-no
                               format-letter
                               equals-flag
                               colon-flag
1026
                               pad-letter
David Kågedal's avatar
David Kågedal committed
1027
			       allow-defer)
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
  (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
1039
        (signal 'lyskom-format-error (list 'lyskom-format
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
                                             ": 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
1057
                         (t (signal 'lyskom-format-error
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
                                    (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
1090
1091
1092
1093
1094
1095
1096
1097
     ;;
     ;;  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
1098
                         ((and arg (symbolp arg))
1099
                          (if (memq arg lyskom-commands)
David Byers's avatar
David Byers committed
1100
1101
			      (lyskom-command-name arg)
			    (prin1-to-string arg t)))
David Byers's avatar
David Byers committed
1102
                         (t (format "(%S)" arg)))))
David Byers's avatar
David Byers committed
1103
1104
1105
1106
1107
1108
1109

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

1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
     ;;
     ;;  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
1125
1126
1127
1128
1129
1130
1131
1132
     ;;  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.
     ;;
1133
     ((= format-letter ?\[)
David Kågedal's avatar
David Kågedal committed
1134
      (setq format-state (lyskom-format-aux format-state allow-defer)
1135
1136
1137
1138
1139
1140
1141
1142
1143
            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
1144
            (cond
1145
1146
1147
1148
1149
1150
             ;; The string is already supplied
             ((stringp arg) arg)

             ;; Conference 0 does not exist, and person 0 means anonymous
             ((and (integerp arg)
                   (zerop arg))
1151
	      (setq colon-flag t)
David Byers's avatar
X    
David Byers committed
1152
1153
1154
1155
1156
1157
1158
              (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)
1159
	      )
1160
1161

             ;; Delay the printing
David Kågedal's avatar
David Kågedal committed
1162
             ((and allow-defer
1163
                   kom-deferred-printing
1164
1165
1166
                   (integerp arg))
              (let ((tmp (cache-get-conf-stat arg)))
                (if (null tmp)
1167
                    (let* ((format-element
1168
			    (concat "%#2@%"
1169
1170
1171
1172
1173
1174
				    (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
1175
					'get-conf-stat
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
					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
1189
                       format-state
1190
                       (cons defer-info
1191
1192
                             (format-state->delayed-content
                              format-state)))
1193
                      lyskom-defer-indicator)
1194
                  (setq arg tmp)
1195
1196
1197
1198
1199
1200
                  (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
1201
	     
1202
1203
1204
1205
1206
1207
1208
1209
             ;; 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)
1210
1211
1212
1213
                  (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
1214
	     
1215
             ;; We got a conf-stat, and can use it directly
1216
1217
1218
1219
1220
             ((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
1221

1222
1223
1224
1225
             ;; Something went wrong
             (t (signal 'lyskom-internal-error
                        (list 'lyskom-format
                              ": argument error")))))
1226
      (if (and (not colon-flag)
1227
1228
               (or (lyskom-conf-stat-p arg)
                   (numberp arg)))
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
          (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) 
1242
		   (int-to-string arg))
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
                  ((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)
1274
      (setq result (cond ((stringp arg) (lyskom-button-transform-text arg))
1275
1276
1277
                         (t (signal 'lyskom-internal-error
                                    (list 'lyskom-format
                                          ": argument error")))))
David Byers's avatar
David Byers committed
1278
      (if (and (not colon-flag)
1279
               (not (lyskom-face-default-p 'kom-subject-face)))
1280
1281
1282
1283
1284
1285
          (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
1286
1287
1288
1289
1290
1291
1292
1293

      ;; +++ 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)))

1294
      (setq result
1295
            (cond ((stringp arg) (lyskom-format-text-body arg))
1296
                  ((lyskom-text-p arg) 
David Byers's avatar
David Byers committed
1297
                   (lyskom-format-text-body (text->text-mass arg)))
1298
1299
1300
1301
                  ((and (consp arg)
                        (lyskom-text-stat-p (car arg)))
                   (lyskom-format-text-body (cdr arg)
                                            (car arg)))
1302
1303
1304
                  (t (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error"))))))
David Kågedal's avatar
David Kågedal committed
1305
1306
1307
1308
1309
1310
1311
1312
1313
1314
1315
1316
1317
1318
1319
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341


     ;;
     ;; 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
     ;;
1342
1343
     
     (t (signal 'lyskom-internal-error
David Kågedal's avatar
David Kågedal committed
1344
		(list 'lyskom-format-help format-letter))))
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
    
    ;;
    ;; 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
1356
1357
1358
1359
1360
1361
1362
             (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))))))
1363
1364
1365
1366
1367
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
1378
1379
1380
1381
1382
1383
1384
1385
1386
          ((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
1387
      (add-text-properties (car (car dp))
1388
                           (length (format-state->result format-state))
1389
                           (cdr (car dp))
1390
1391
1392
1393
                           (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
1394
1395


1396
1397
1398
1399
1400
;;; ================================================================
;;;			 Text body formatting

;;; Author: David K}gedal
;;; This should be considered an experiment
David Byers's avatar
David Byers committed
1401

1402
(lyskom-external-function w3-fetch)
David Byers's avatar
David Byers committed
1403
(lyskom-external-function w3-region)
1404

1405
(defun lyskom-format-text-body (text &optional text-stat)
David Kågedal's avatar
David Kågedal committed
1406
  "Format a text for insertion. Does parsing of special markers in the text."
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
  (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))
                     (while tmp
                       (when (string-match (car (car tmp)) content-type)
                         (setq result (car tmp))
                         (setq tmp nil))
                       (setq tmp (cdr tmp)))
                     result))))
David Byers's avatar
David Byers committed
1424
1425
         (formatted (and fn (funcall fn text))))

1426
1427
1428
1429
1430
1431
    (when (eq t lyskom-last-text-format-flags)
      (lyskom-signal-reformatted-text
       (if content-type
           (lyskom-format 'reformat-generic content-type)
         nil)))

David Byers's avatar
David Byers committed
1432
    (cond (formatted formatted)
David Byers's avatar
David Byers committed
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
          (kom-text-properties 
           (lyskom-button-transform-text
            (lyskom-fill-message text)))
          (t (lyskom-fill-message text)))))

(defun lyskom-signal-reformatted-text (how)
  "Signal that the last text was reformatted HOW, which should be a string
in lyskom-messages."
  (setq lyskom-last-text-format-flags how))

David Byers's avatar
David Byers committed
1443

David Byers's avatar
David Byers committed
1444
1445
1446
1447
(defun lyskom-w3-region (start end)
  (w3-region start end)
  (add-text-properties start (min (point-max) end) '(end-closed nil)))

David Byers's avatar
David Byers committed
1448
(defun lyskom-format-html (text)
David Byers's avatar
David Byers committed
1449
1450
1451
1452
  (when (condition-case e (progn (require 'w3) t) (error nil))
    (add-text-properties 0 (length text) '(special-insert lyskom-w3-region) text)
    (lyskom-signal-reformatted-text 'reformat-html)
    (substring text 5)))
David Byers's avatar
David Byers committed
1453
1454
1455
1456
1457
1458
1459
1460
1461
1462
1463