lyskom-rest.el 82.7 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
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
;;;; ================================================================
;;;; ================================================================
;;;;
;;;; 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
;;;;   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.
;;;;

75
76
77
78
79
(setq lyskom-clientversion-long 
      (concat lyskom-clientversion-long
	      "$Id$\n"))


Per Cederqvist's avatar
.    
Per Cederqvist committed
80
81
82
83
84
85
86
87
88
89
90
91
92
93
;;;; ================================================================
;;;;                             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
94
95
96
97
98
(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
99

100
101
102
103
104
105
;;; ================================================================
;;;             Global variables
;;;

(defvar lyskom-unread-mode-line nil)

Per Cederqvist's avatar
.    
Per Cederqvist committed
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
;;; ================================================================
;;;             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."
  (let ((pair (assoc errno lyskom-error-texts)))
    (if pair 
	(cdr pair)
      (lyskom-format 'error-not-found errno))))

121
(defun lyskom-report-command-answer (answer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
122
123
124
125
126
127
  "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)
128
			  lyskom-errno)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
129
130
131
132
133
134
135
136
137
138
139
140
141


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

(defun lyskom-tell-string (key)
  "Retrieve the phrase indexed by the key from the kom-tell-phrases
assoc list."
  (car (cdr (assoc key kom-tell-phrases))))


(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
142
143
144
  ;; 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
145
146
147
148
149
150
151
152
153
154
  (lyskom-tell-server (lyskom-tell-string key)))



;;;; ================================================================
;;;;                User-level commands and functions.


(defun lyskom-command-name (command)
  "Get the command name for the command COMMAND"
155
156
157
158
  (car (cdr (assoc command 
		   (if kom-emacs-knows-iso-8859-1
		       lyskom-commands
		     lyskom-swascii-commands)))))
Linus Tolke's avatar
Linus Tolke committed
159

Per Cederqvist's avatar
.    
Per Cederqvist committed
160

Linus Tolke's avatar
Linus Tolke committed
161
(defun lyskom-ok-command (alternative administrator)
162
163
164
165
166
167
  "Returns non-nil if it is ok to do such a command right now."
  (if administrator
      (not (memq (car (cdr alternative)) lyskom-admin-removed-commands))
    (not (memq (car (cdr alternative)) lyskom-noadmin-removed-commands))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
168
169
170
171
172
(defun kom-extended-command ()
  "Read a LysKOM function name and call the function."
  (interactive)
  (let* ((completion-ignore-case t)
	 (alternatives (mapcar (function reverse)
173
174
175
			       (if kom-emacs-knows-iso-8859-1
				   lyskom-commands
				 lyskom-swascii-commands)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
176
	 (name (completing-read (lyskom-get-string 'extended-command)
177
				alternatives 
Linus Tolke's avatar
Linus Tolke committed
178
179
180
181
182
183
184
				;; lyskom-is-administrator is buffer-local and
				;; must be evalled before the call to 
				;; completing-read
				;; Yes, this is not beautiful
				(list 'lambda '(alternative)
				      (list 'lyskom-ok-command 'alternative
					    lyskom-is-administrator))
185
				t nil))
Per Cederqvist's avatar
.    
Per Cederqvist committed
186
	 (fnc (reverse-assoc (car (all-completions name alternatives)) 
187
188
189
			     (if kom-emacs-knows-iso-8859-1
				 lyskom-commands
			       lyskom-swascii-commands))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
190
191
192
193
194
195
196
    (cond
     (fnc (call-interactively (car fnc)))
     (t (kom-next-command)))))


;;; Resume operation after a crash.

David Kågedal's avatar
David Kågedal committed
197
198
199
200
(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
201
  (lyskom-init-parse lyskom-buffer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
202
203
204
205
206
  (setq lyskom-call-data nil)
  (setq lyskom-pending-calls nil)
  (setq lyskom-output-queue (lyskom-queue-create))
  (setq lyskom-number-of-pending-calls 0)
  (setq lyskom-is-parsing nil)
David Kågedal's avatar
David Kågedal committed
207
  (if refetch (lyskom-refetch))
Per Cederqvist's avatar
.    
Per Cederqvist committed
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
  (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
	(recenter 0)
Lars Willför's avatar
Lars Willför committed
224
	(lyskom-next-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
225
226
    (recenter 0)
    (move-to-window-line -1)
Lars Willför's avatar
Lars Willför committed
227
    (lyskom-set-last-viewed)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
228
229


230
;;; Author: Lars Willf|r
Per Cederqvist's avatar
.    
Per Cederqvist committed
231
232
233
234

(defun kom-next-command ()
  "Run next command or scroll one page."
  (interactive)
Lars Willför's avatar
Lars Willför committed
235
236
237
238
239
  (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
240
241
242
243
244

  
(defun kom-line-next-command ()
  "Run next command or scroll one line."
  (interactive)
Lars Willför's avatar
Lars Willför committed
245
246
247
248
249
  (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
250
251


252
253
;;; Author: Per Cederqvist

Lars Willför's avatar
Lars Willför committed
254
(defun lyskom-next-command ()
255
  "Run next command."
256
  (let ((lyskom-doing-default-command t))
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
    (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
	 ((stringp command)
	  (execute-kbd-macro command))
	 (t (call-interactively command)))))
     ((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
276
277
278
279
280
281
282
283


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


(defun kom-initial-digit-view ()
  (interactive)
284
285
  (setq unread-command-events (cons last-command-event
                                    unread-command-events))
Per Cederqvist's avatar
.    
Per Cederqvist committed
286
287
288
289
290
291
  (call-interactively 'kom-view nil))


(defun kom-view (text-no)
  "View text number TEXT-NO."
  (interactive "P")
292
293
294
295
296
297
298
299
300
301
302
303
304
305
  (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
306
	    (recenter 1))
307
308
309
310
	(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
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338


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


339
340
;;; Modified to handle filters

David Kågedal's avatar
David Kågedal committed
341
(def-kom-command kom-view-next-text ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
342
343
  "Display next text (from lyskom-reading-list)."
  (interactive)
David Kågedal's avatar
David Kågedal committed
344
345
346
347
348
349
350
351
352
  (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))
353
	      
David Kågedal's avatar
David Kågedal committed
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
	(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
377
378
379
380
381
				    (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))))))))
382
  
Per Cederqvist's avatar
.    
Per Cederqvist committed
383

384
;;; Modified to handle filters
Per Cederqvist's avatar
.    
Per Cederqvist committed
385

David Kågedal's avatar
David Kågedal committed
386
;; This is horribly ugly. It acts like a user command, but it isn't.
Per Cederqvist's avatar
.    
Per Cederqvist committed
387
388
389
(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
390
391
392
393
394
395
396
397
398
399
400
401
  (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
402
403
404


(defun lyskom-is-read (text-no)
Per Cederqvist's avatar
Per Cederqvist committed
405
  "Remove TEXT-NO from the list of texts to read.
Per Cederqvist's avatar
.    
Per Cederqvist committed
406
Deletes TEXT-NO from lyskom-reading-list and lyskom-to-do-list.
Per Cederqvist's avatar
Per Cederqvist committed
407
408
409
Adds info in lyskom-membership.

This function only modifies the internal state of the client. It does
Per Cederqvist's avatar
Per Cederqvist committed
410
411
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
412
413
  (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
414
  (initiate-get-text-stat 'main 'lyskom-is-read-handler text-no)
415
  (setq lyskom-normally-read-texts (cons text-no lyskom-normally-read-texts)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
416
417
418
419
420


(defun lyskom-is-read-handler (text-stat)
  "Update lyskom-membership for all recipients to TEXT-STAT."
  (lyskom-traverse
421
422
423
424
425
426
427
428
429
      misc (text-stat->misc-info-list text-stat)
    (if (or (eq 'RECPT (misc-info->type misc))
	    (eq 'CC-RECPT (misc-info->type misc)))
	(let ((membership (lyskom-member-p (misc-info->recipient-no misc))))
	  (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
430
431
432
433
434
435


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


436
(def-kom-command kom-go-to-next-conf ()
Per Cederqvist's avatar
.    
Per Cederqvist committed
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
  "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)
452
453
  (lyskom-go-to-next-conf)
  (lyskom-end-of-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
454
455
456
457
458
459
460
461
462
463
464
465


(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.
466
467
468
469
470
471
472
	(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
473
    (lyskom-insert-string 'all-conf-unread-r)
474
    (lyskom-set-mode-line (lyskom-get-string 'all-conf-unread-s))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
475
476


477
(defun lyskom-maybe-move-unread (bury)
Linus Tolke's avatar
Linus Tolke committed
478
  "Empty the reading list.
479
If the argument BURY is non-nil and there are unread artilces left in the
Linus Tolke's avatar
Linus Tolke committed
480
reading list then the conf is inserted last in the to do list."
Per Cederqvist's avatar
.    
Per Cederqvist committed
481
482
  (if (not (read-list-isempty lyskom-reading-list))
      (progn
483
	(if bury
Per Cederqvist's avatar
.    
Per Cederqvist committed
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
	    (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"
  (initiate-pepsi 'main nil (conf-stat->conf-no conf-stat))
  (setq lyskom-current-conf (conf-stat->conf-no conf-stat))
512
  (let ((num-unread (length (text-list->texts
Per Cederqvist's avatar
.    
Per Cederqvist committed
513
514
			     (read-info->text-list
			      read-info)))))
515
516
517
518
519
520
521
    (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
522
523
524
525
526
527
  



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

528
529
530
;;; in vars.el:
;(defvar lyskom-sessions-with-unread nil
;  "Global variable. List of lyskom-sessions with unread articles.")
531
532
533
534
535
536
537
;;;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
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553

(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)
554
	(total-unread 0)
555
	(letters 0)
556
	(len 0)
Per Cederqvist's avatar
.    
Per Cederqvist committed
557
558
559
	(read-info-list nil))

    (if (null name)
560
561
562
563
564
565
566
567
	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
568
569
	    ;; This was weird. Someone had begun to write an if, but
	    ;; this was all there was: (if 
570
571
572
573
574
575
576
577
578
579
	    (while read-info-list
	      (if (read-info->conf-stat (car read-info-list))
		  (progn
		    (setq len (length (text-list->texts 
				       (read-info->text-list 
					(car read-info-list)))))
		    (if (= (conf-stat->conf-no conf)
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq unread len))
580
581
582
583
		    (if (= lyskom-pers-no
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq letters len))
584
		    (setq total-unread (+ total-unread len))))
585
	      (setq read-info-list (cdr read-info-list))))))
586
587
588
589
590
591
      (if (= unread -1)
	  (setq unread 0))

      (if (null name)
	  nil
	(setq mode-line-conf-name 
David Kågedal's avatar
David Kågedal committed
592
593
594
595
596
597
598
599
600
601
	      (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 ? ))
602
603
604
605
606
607
608
609
610
611
			 0 27))
	(if (not kom-emacs-knows-iso-8859-1)
	    (setq mode-line-conf-name
		  (iso-8859-1-to-swascii mode-line-conf-name))))

      (if (zerop total-unread)
	  (setq lyskom-sessions-with-unread
		(delq lyskom-proc lyskom-sessions-with-unread))
	(or (assq lyskom-proc lyskom-sessions-with-unread)
	    (setq lyskom-sessions-with-unread
612
613
614
615
616
617
		  (cons lyskom-proc lyskom-sessions-with-unread))))
      (if (zerop letters)
	  (setq lyskom-sessions-with-unread-letters
		(delq lyskom-proc lyskom-sessions-with-unread-letters))
	(or (assq lyskom-proc lyskom-sessions-with-unread-letters)
	    (setq lyskom-sessions-with-unread-letters
David Kågedal's avatar
David Kågedal committed
618
619
		  (cons lyskom-proc lyskom-sessions-with-unread-letters)))))
  (force-mode-line-update))
Per Cederqvist's avatar
.    
Per Cederqvist committed
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642


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

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


(defun lyskom-member-p (conf-no)
  "Returns non-nil if conference CONF-NO is present on lyskom-membership.
The value is actually the membership for the conference."
  (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))


;;;; ================================================================
;;;;                   Scrolling and text insertion.


David Kågedal's avatar
David Kågedal committed
643
644
645
646
647
648
649
650
651
652
653
(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))
	(let ((delchars (- (buffer-size) kom-max-buffer-size)))
	  (goto-char (point-min))
	  (while (< (point) delchars)
	    (forward-line 1))
	  (delete-region (point-min) (point))))))

Per Cederqvist's avatar
.    
Per Cederqvist committed
654
655
656
657
658
659
660
661
662
663
664
(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
665
666
667
668
669
670
671
672
673
674
675
676
    (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)
		(if (not (pos-visible-in-window-p))
		    (forward-char -1))))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
677
678
679
680
	

(defun lyskom-insert (string)
  "Insert STRING last in current buffer.
681
682
683
684
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.
685
The text is converted according to the value of kom-emacs-knows-iso-8859-1."
David Kågedal's avatar
David Kågedal committed
686
687
688
689
690
691
692
693
694
695
696
697
698
  (let ((was-at-max (= (save-excursion (end-of-line) (point)) (point-max))))
    (save-excursion
      (goto-char (point-max))
      (let ((buffer-read-only nil))
	(insert (if kom-emacs-knows-iso-8859-1
		    string
		  (iso-8859-1-to-swascii string))))
      (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)))))))
699

Per Cederqvist's avatar
.    
Per Cederqvist committed
700

701
702
703
704
705
706
707
708
709
710
(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."
  (let ((buffer-read-only nil))
    (insert (if kom-emacs-knows-iso-8859-1
                string
              (iso-8859-1-to-swascii string))))
  (lyskom-trim-buffer))  

Per Cederqvist's avatar
.    
Per Cederqvist committed
711
712
713
714
715
716
717

(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.
The strings buffered are printed before the prompt by lyskom-print-prompt."
  (cond
   ((and lyskom-executing-command
718
         (not (eq lyskom-is-waiting t)))
Per Cederqvist's avatar
Per Cederqvist committed
719
720
    ;; Don't insert the string until the current command is finished.
    (if (null lyskom-to-be-printed-before-prompt)
721
        (setq lyskom-to-be-printed-before-prompt (lyskom-queue-create)))
722
    (lyskom-queue-enter lyskom-to-be-printed-before-prompt 
723
724
725
                        (list string)))
   (t (save-excursion
    (let ((oldpoint (if (/= (point) (point-max)) (point) nil)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
726
      (goto-char (point-max))
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
      (let* ((window (get-buffer-window (current-buffer)))
             (pv (and window
                      (pos-visible-in-window-p (point) window))))
        (beginning-of-line)
        (let ((buffer-read-only nil)
              (start (point)))
          (insert (if kom-emacs-knows-iso-8859-1
                      string
                    (iso-8859-1-to-swascii string))))
        (goto-char (point-max))
        (if (and pv
                 (eq window (selected-window))
                 (not (pos-visible-in-window-p (point) window)))
              (recenter -1))

        (if window
            (if (pos-visible-in-window-p (point) window)
                nil
              (goto-char (window-start window))
              (end-of-line (1- (window-height window)))))))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
747
748
749
750
751
752
753


(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)))
    (if kom-emacs-knows-iso-8859-1
754
755
	(message "%s" str)
      (message "%s" (iso-8859-1-to-swascii str)))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
756
757


758
759
760
761
762
(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)))
    (if kom-emacs-knows-iso-8859-1
763
764
	(error "%s" str)
      (error "%s" (iso-8859-1-to-swascii str)))))
765
766


Lars Willför's avatar
Lars Willför committed
767
768
769
770
771
772
(defun lyskom-set-last-viewed ()
  (save-excursion
    (vertical-motion 0)
    (setq lyskom-last-viewed (point))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
773
774
775
;;; ================================================================
;;;                  Extended string formatting

776
777
778
;;; Author: David Byers
;;; Original code: Inge Wallin

Per Cederqvist's avatar
.    
Per Cederqvist committed
779

780
781
782
(defvar lyskom-format-format
  "%\\(=\\)?\\(-?[0-9]+\\)?\\(#\\([0-9]+\\)\\)?\\(:\\)?\\([][@MmPpnrtsdoxc]\\)"
  "regexp matching format string parts.")
Per Cederqvist's avatar
.    
Per Cederqvist committed
783
784
785
786
787
788
789

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

(defun lyskom-get-string (atom)
  "Get the string corresponding to ATOM and return it."
790
791
792
793
794
795
796
797
798
799
800
  (if (stringp atom)
      atom
    (let ((format-pair (assoc atom lyskom-strings)))
      (if (null format-pair)
	  (signal 'lyskom-internal-error 
		  (list 'lyskom-get-string
			(list atom ": string not found")))
	(cdr format-pair)))))


(defun lyskom-format (format-string &rest argl)
801
  (format-state->result (lyskom-do-format format-string argl)))
802
803

(defun lyskom-format-insert (format-string &rest argl)
804
805
  "Format and insert a string according to FORMAT-STRING.
The string is inserted at the end of the buffer with `lyskom-insert'."
806
  (let* ((state (lyskom-do-format format-string argl t))
807
	 (start (point-max))
808
	 (deferred (format-state->delayed-content state)))
809
    (lyskom-insert (format-state->result state))
810
811
812
813
814
815
816
    (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))))))
817

818
819
820
821
822
(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))
823
	 (deferred (format-state->delayed-content state)))
824
    (lyskom-insert-at-point (format-state->result state))
825
826
827
828
829
830
831
    (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))))))
832

833
(defun lyskom-format-insert-before-prompt (format-string &rest argl)
834
  (lyskom-insert-before-prompt (format-state->result (lyskom-do-format format-string argl))))
835
836


David Kågedal's avatar
David Kågedal committed
837
(defun lyskom-do-format (format-string &optional argl allow-defer)
838
  "Do the actual formatting and return the resulting format-state."
839
840
841
842
843
844
845
846
  (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
847
848
        (if (and (boundp 'lyskom-buffer)
		 lyskom-buffer)
David Kågedal's avatar
David Kågedal committed
849
            (set-buffer lyskom-buffer))
David Kågedal's avatar
David Kågedal committed
850
851
852
853
854
	(condition-case error
	    (setq state (lyskom-format-aux (make-format-state
					    fmt
					    0
					    argl
855
					    "")
David Kågedal's avatar
David Kågedal committed
856
					   allow-defer))
David Kågedal's avatar
David Kågedal committed
857
858
859
	  (lyskom-format-error
	   (error "LysKOM internal error formatting %s: %s%s"
		  format-string (nth 1 error) (nth 2 error))))))
860
    state))
861
862
863
864
865





David Kågedal's avatar
David Kågedal committed
866
(defun lyskom-format-aux (format-state allow-defer)
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
  (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)
916
917
918
919
920
921
922
	      pad-length (if (match-beginning 2)
			     (string-to-int (substring 
					     (format-state->format-string
					      format-state)
					     (match-beginning 2)
					     (match-end 2)))
			   nil)
923
	      arg-no (if (match-beginning 4)
924
925
926
927
928
			 (string-to-int (substring (format-state->format-string
						    format-state)
						   (match-beginning 4)
						   (match-end 4)))
		       nil)
929
930
	      colon-flag (match-beginning 5)
	      format-letter (if (match-beginning 6)
931
932
933
934
935
936
937
				(aref (format-state->format-string 
				       format-state)
				      (match-beginning 6))
			      (signal 'lyskom-internal-error
				      (list 'lyskom-format-aux 
					    (format-state->format-string
					     format-state)))))
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961

    ;;
    ;;  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
962
               ? )
David Kågedal's avatar
David Kågedal committed
963
	     allow-defer))))))
964
965
966
967
968
969
970
971
972
  (lyskom-tweak-format-state format-state))


(defun lyskom-format-aux-help (format-state
                               pad-length
                               arg-no
                               format-letter
                               equals-flag
                               colon-flag
973
                               pad-letter
David Kågedal's avatar
David Kågedal committed
974
			       allow-defer)
975
976
977
978
979
980
981
982
983
984
985
  (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
986
        (signal 'lyskom-format-error (list 'lyskom-format
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
                                             ": 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
1004
                         (t (signal 'lyskom-format-error
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
                                    (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 "%")) 
     
     ;;
     ;;  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
1052
1053
1054
1055
1056
1057
1058
1059
     ;;  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.
     ;;
1060
     ((= format-letter ?\[)
David Kågedal's avatar
David Kågedal committed
1061
      (setq format-state (lyskom-format-aux format-state allow-defer)
1062
1063
1064
1065
1066
1067
1068
1069
1070
            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
1071
            (cond
1072
1073
1074
1075
1076
1077
             ;; The string is already supplied
             ((stringp arg) arg)

             ;; Conference 0 does not exist, and person 0 means anonymous
             ((and (integerp arg)
                   (zerop arg))
1078
1079
1080
1081
1082
1083
1084
	      (setq colon-flag t)
              (lyskom-format (cond (lyskom-default-conf-string
				    lyskom-default-conf-string)
				   ((= format-letter ?P) 'person-is-anonymous)
				   (t 'conference-does-not-exist))
			     arg)
	      )
1085
1086

             ;; Delay the printing
David Kågedal's avatar
David Kågedal committed
1087
             ((and allow-defer
1088
                   kom-deferred-printing
1089
1090
1091
                   (integerp arg))
              (let ((tmp (cache-get-conf-stat arg)))
                (if (null tmp)
1092
                    (let* ((format-element
1093
			    (concat "%#2@%"
1094
1095
1096
1097
1098
1099
				    (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
1100
					'get-conf-stat
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
					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
1114
                       format-state
1115
                       (cons defer-info
1116
1117
                             (format-state->delayed-content
                              format-state)))
1118
                      lyskom-defer-indicator)
1119
1120
                  (setq arg tmp)
                  (conf-stat->name arg))))
David Kågedal's avatar
David Kågedal committed
1121
	     
1122
1123
1124
1125
1126
1127
1128
1129
1130
             ;; 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)
                  (conf-stat->name conf-stat))))
David Kågedal's avatar
David Kågedal committed
1131
	     
1132
1133
             ;; We got a conf-stat, and can use it directly
             ((lyskom-conf-stat-p arg) (conf-stat->name arg))
David Kågedal's avatar
David Kågedal committed
1134

1135
1136
1137
1138
             ;; Something went wrong
             (t (signal 'lyskom-internal-error
                        (list 'lyskom-format
                              ": argument error")))))
1139
      (if (and (not colon-flag)
1140
1141
               (or (lyskom-conf-stat-p arg)
                   (numberp arg)))
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
          (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) 
1155
		   (int-to-string arg))
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
                  ((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)
1187
      (setq result (cond ((stringp arg) (lyskom-button-transform-text arg))
1188
1189
1190
                         (t (signal 'lyskom-internal-error
                                    (list 'lyskom-format
                                          ": argument error")))))
David Byers's avatar
David Byers committed
1191
      (if (and (not colon-flag)
1192
               (not (lyskom-face-default-p 'kom-subject-face)))
1193
1194
1195
1196
1197
1198
          (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
1199
1200
1201
1202
1203
1204
1205
1206

      ;; +++ 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)))

1207
      (setq result
1208
            (cond ((stringp arg) (lyskom-format-text-body arg))
1209
                  ((lyskom-text-p arg) 
David Byers's avatar
David Byers committed
1210
                   (lyskom-format-text-body (text->text-mass arg)))
1211
1212
1213
                  (t (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error"))))))
David Kågedal's avatar
David Kågedal committed
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250


     ;;
     ;; 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
     ;;
1251
1252
     
     (t (signal 'lyskom-internal-error
David Kågedal's avatar
David Kågedal committed
1253
		(list 'lyskom-format-help format-letter))))
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
    
    ;;
    ;; 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
1265
1266
1267
1268
1269
1270
1271
             (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))))))
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
          ((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
1296
      (add-text-properties (car (car dp))
1297
                           (length (format-state->result format-state))
1298
                           (cdr (car dp))
1299
1300
1301
1302
                           (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
1303
1304


1305
1306
1307
1308
1309
;;; ================================================================
;;;			 Text body formatting

;;; Author: David K}gedal
;;; This should be considered an experiment
David Byers's avatar
David Byers committed
1310

1311
1312
1313
(defvar lyskom-format-experimental nil)

(defun lyskom-format-text-body (text)
David Kågedal's avatar
David Kågedal committed
1314
1315
  "Format a text for insertion. Does parsing of special markers in the text."
  ;; This function is probably not written as it should
1316
1317
1318
  (if lyskom-format-experimental
      (cond
       ((and (string-match "\\`html:" text)
1319
1320
1321
1322
1323
1324
1325
1326
             (condition-case e (require 'w3) (error nil)))
        (let ((tmpbuf (generate-new-buffer "lyskom-html")))
          (unwind-protect
              (save-excursion
                (set-buffer tmpbuf)
                (insert (substring text 5))
                (w3-preview-this-buffer))
            (kill-buffer tmpbuf))))
1327
       ((and (fboundp 'format-decode-buffer)
1328
1329
1330
1331
1332
             (string-match "\\`enriched:" text))
        (let ((tmpbuf (generate-new-buffer "lyskom-enriched")))
          (unwind-protect
              (save-excursion
                (set-buffer tmpbuf)
David Byers's avatar
David Byers committed
1333
1334
1335
1336
1337
                (insert (substring text 10))
                (format-decode-buffer)
                (lyskom-button-transform-text (buffer-string))
                ;; (substring (buffer-string) 0 -1) ; Remove the \n
                )
1338
            (kill-buffer tmpbuf))))
David Byers's avatar
David Byers committed
1339
       (t (lyskom-button-transform-text text)
David Kågedal's avatar
David Kågedal committed
1340
	))
David Kågedal's avatar
David Kågedal committed
1341
1342
1343
    (if kom-text-properties
	(lyskom-button-transform-text text)
      text)))
1344
    
1345
1346
1347
1348


;;; ============================================================
;;;                     Beeping and feeping
1349
;;;                     Faces and colors
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
1369
;;;

(defun lyskom-beep (arg)
  "Beep. ARG is how to beep. 
nil means don't beep.
t means beep once.
A number means beep that number of times (.1 second delay between beeps).
A string means start the command kom-audio-player with the string as argument.
A symbol other than t means call it as a function."
  (cond ((null arg))
        ((eq t arg) (ding t))
        ((numberp arg) (while (> arg 0)
                         (ding t)
                         (sit-for 0.1)
                         (setq arg (1- arg))))
        ((stringp arg)
         (start-process "audio"
                        nil
                        kom-audio-player
                        arg))
David Byers's avatar
David Byers committed
1370
1371
        ((and (symbolp arg)
              (fboundp arg))
1372
1373
1374
1375
         (condition-case err
             (funcall arg)
           (error (message "Error in beep function")
                  (beep))))
1376
        (t (beep))))
1377
1378
1379
1380
1381

(defun lyskom-face-default-p (f1)
  "Return t if f1 is undefined or the default face."
  (or (not (facep f1))
      (face-equal f1 'default)))
1382
1383
		  

Per Cederqvist's avatar
.    
Per Cederqvist committed
1384
1385
1386
1387
1388
1389
1390
1391
;;; ================================================================
;;;                      Iso-8859-1 converting

;;; Author: Linus Tolke Y


(defvar iso-8859-1-table 
  "	
David Byers's avatar
David Byers committed
1392
1393
1394
1395

 !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~	

  !c#$Y|$\"c+?!-R~C+23'u$-,10?????AAAA[][CE@EEIIIIDNOOOO\\*\\UUU^YTBaaaa{}{ce`eeiiiidnoooo|/|uuu~yty"
Per Cederqvist's avatar
.    
Per Cederqvist committed
1396
1397
1398
1399
1400
1401
1402
  "*This is a table of the chars corresponding value in SWASCII.
Used by the function iso-8859-1-to-swascii function.")


(defun iso-8859-1-to-swascii (string)
  "Returns a string without characters with code > 127.
What chars are converted to is controlled by the iso-8859-1-table."
1403
1404
1405
1406
1407
1408
1409
1410
  (let ((tmp (copy-sequence string))
        (i 0)
        (len (length string)))
    (while (< i len)
      (aset tmp i (aref iso-8859-1-table
                        (aref tmp i)))
      (setq i (1+ i)))
    tmp))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422


;;;; ================================================================
;;;;                         Running in buffer 

;;; Author: Linus


(defun backward-text (&optional arg)
  "Searches backwards for a text start and recenters with that text at the top."
  (interactive "p")
  (let ((paragraph-start lyskom-text-start))
1423
1424
    (backward-paragraph arg))
  (beginning-of-line))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1425
1426
1427
1428
1429
1430


(defun forward-text (&optional arg)
  "Searches forward for a text start and recenters with that text at the top."
  (interactive "p")
  (let ((paragraph-start lyskom-text-start))
David Byers's avatar
David Byers committed
1431
    (forward-paragraph arg)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446


(defun kom-save-text (&optional arg)
  "Saves/appends the article before point to a file.
The article is determined by a search-backward the same as backward-text 
and then a forward-text.
With an argument ARG the search is done over that number of texts.
The name of the file is read using the minibuffer and the default is kom-text."
  (interactive "p")
  (save-excursion
    (backward-text arg)
    (let ((p1 (point))
	  (p2 (progn
		(forward-text arg)
		(beginning-of-line)
1447
1448
		(point)))
	  (name (read-file-name 
1449
1450
1451
1452
1453
1454
1455
1456
		 (if kom-emacs-knows-iso-8859-1
		     (lyskom-format 'save-on-file-q
				    (file-name-nondirectory
				     lyskom-saved-file-name))
		   (iso-8859-1-to-swascii 
		    (lyskom-format 'save-on-file-q
				   (file-name-nondirectory
				    lyskom-saved-file-name))))
1457
1458
1459
		 (file-name-directory lyskom-saved-file-name)
		 lyskom-saved-file-name
		 nil)))
1460
1461
1462
      (if (file-directory-p name)
	  (setq name (concat (file-name-as-directory name)
			     (file-name-nondirectory lyskom-saved-file-name))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1463
      (append-to-file p1 p2
1464
1465
		      (expand-file-name name))
      (setq lyskom-saved-file-name name))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1466
1467


1468
1469
1470
1471
1472
1473
1474
1475
1476
1477
;;; ================================================================
;;;                Some useful abstractions

(defsubst lyskom-membership-highest-index ()
  "Return the number of conferences the user is a member of minus 1.
This is the highest index in lyskom-membership that contains data, if
positions are counted from 0, as they are."
  (1- (length lyskom-membership)))


Per Cederqvist's avatar
.    
Per Cederqvist committed
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
;;; ================================================================
;;;                             To-do


(defun lyskom-start-of-command (function &optional may-interrupt)
  "This function is run at the beginning of every LysKOM command.
It moves the cursor one line down, and +++ later it will tell the server
that the previous text has been read.

Argument FUNCTION is a string the string will be written in the buffer
on start of the command. If it is a symbol it searches for the corresponding
command name in lyskom-commands and writes this in the message buffer.

If optional argument MAY-INTERRUPT is present and non-nil,
don't signal an error if this call is interrupting another command.

Special: if lyskom-is-waiting then we are allowed to break if we set 
lyskom-is-waiting nil.
1496
1497
1498
1499
1500

This function checks if lyskom-doing-default-command and
lyskom-first-time-around are bound. The text entered in the buffer is
chosen according to this"

Per Cederqvist's avatar
.    
Per Cederqvist committed
1501
  (if (and lyskom-is-waiting
1502
           (listp lyskom-is-waiting))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1503
      (progn
1504
1505
        (setq lyskom-is-waiting nil)
        (lyskom-end-of-command)))
1506
1507

  (setq lyskom-is-waiting nil)
Per Cederqvist's avatar
.    
Per Cederqvist committed
1508
  (if (and lyskom-executing-command (not may-interrupt))
1509
      (lyskom-error "%s" (lyskom-get-string 'wait-for-prompt)))
1510
1511
  (if (not (and (boundp 'lyskom-doing-default-command)
                lyskom-doing-default-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1512
      (cond
1513
       (lyskom-first-time-around)
Per Cederqvist's avatar
.    
Per Cederqvist committed
1514
1515
       ((stringp function) (lyskom-insert function))
       ((and function (symbolp function))
1516
1517
        (let ((name (lyskom-command-name function)))
          (if name (lyskom-insert name)))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1518
    (save-excursion
Linus Tolke's avatar
Linus Tolke committed
1519
      (if (not lyskom-no-prompt)
1520
1521
1522
          (let ((buffer-read-only nil))
            (goto-char (point-max))
            (delete-char (- (length lyskom-prompt-text))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1523
    (lyskom-insert lyskom-prompt-executing-default-command-text))
1524
  (setq mode-line-process (lyskom-get-string 'mode-line-working))
1525
1526
  (if (pos-visible-in-window-p (point-max))
      (save-excursion
1527
1528
        (goto-char (point-max))
        (lyskom-set-last-viewed)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1529
  (setq lyskom-executing-command t)
1530
  (setq lyskom-current-command function)
Per Cederqvist's avatar
.    
Per Cederqvist committed
1531
1532
  (lyskom-insert "\n")
  (if (and (eq (window-buffer (selected-window))
1533
               (current-buffer))
1534
           ;; (= (point) (point-max))
David Kågedal's avatar
David Kågedal committed
1535
	   ) 
Per Cederqvist's avatar
.    
Per Cederqvist committed
1536
      (progn
David Kågedal's avatar
David Kågedal committed
1537
1538
	(if (pos-visible-in-window-p (1- (point-max)))
	    (goto-char (point-max)))
David Kågedal's avatar
David Kågedal committed
1539
        (sit-for 0))) 
1540
                                        ;  (lyskom-scroll)
David Kågedal's avatar
David Kågedal committed
1541
  (run-hooks 'lyskom-before-command-hook)
1542
  (if kom-page-before-command           ;Nice with dumb terminals.
1543
      (if (or (not (listp kom-page-before-command))
1544
              (memq function kom-page-before-command))
David Kågedal's avatar
David Kågedal committed
1545
          (recenter 1))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1546
1547
1548


(defun lyskom-end-of-command ()
Linus Tolke's avatar
Linus Tolke committed
1549
  "Print prompt, maybe scroll, prefetch info."
Per Cederqvist's avatar
.