lyskom-rest.el 73.8 KB
Newer Older
Linus Tolke's avatar
Linus Tolke committed
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
;;;;;
;;;;; $Id$
;;;;; Copyright (C) 1991  Lysator Academic Computer Association.
;;;;;
;;;;; This file is part of the LysKOM server.
;;;;; 
;;;;; LysKOM is free software; you can redistribute it and/or modify it
;;;;; under the terms of the GNU General Public License as published by 
;;;;; the Free Software Foundation; either version 1, or (at your option) 
;;;;; any later version.
;;;;; 
;;;;; LysKOM is distributed in the hope that it will be useful, but WITHOUT
;;;;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
;;;;; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
;;;;; for more details.
;;;;; 
;;;;; You should have received a copy of the GNU General Public License
;;;;; along with LysKOM; see the file COPYING.  If not, write to
;;;;; Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
;;;;; or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
;;;;; MA 02139, USA.
;;;;;
;;;;; Please mail bug reports to bug-lyskom@lysator.liu.se. 
;;;;;
Per Cederqvist's avatar
.    
Per Cederqvist committed
25
26
27
28
29
30
31
32
33
34
35
36
37
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
106
107
108
109
110
111
112
113
114
115
116

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


(defun lyskom-handle-command-answer (answer)
117
118
119
120
121
122
  "Handles a void return from call to the server."
  (lyskom-report-command-answer answer)
  (lyskom-end-of-command))


(defun lyskom-report-command-answer (answer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
123
124
125
126
127
128
  "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)
129
			  lyskom-errno)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173


;;; ----------------------------------------------------------------
;;; 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."
  (lyskom-tell-server (lyskom-tell-string key)))


;;;; ================================================================
;;;; Aronsson was here 5 MAY 1991
					; kom-dict-*
(defconst kom-dict
  (append
   '(
     (kom-dict-vfsh		"VFSH") ; sample assoc entry
     )
   kom-tell-phrases			; Really?
   lyskom-commands)			; Really?

  "These texts are used all over the client. They were collected into
one huge assoc list to facilitate internationalization and personal
profiling. Users are encouraged to change this dictionary for fun.

Related variables are kom-tell-phrases and lyskom-commands.")

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


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


(defun lyskom-command-name (command)
  "Get the command name for the command COMMAND"
174
175
176
177
  (car (cdr (assoc command 
		   (if kom-emacs-knows-iso-8859-1
		       lyskom-commands
		     lyskom-swascii-commands)))))
Linus Tolke's avatar
Linus Tolke committed
178

Per Cederqvist's avatar
.    
Per Cederqvist committed
179

Linus Tolke's avatar
Linus Tolke committed
180
(defun lyskom-ok-command (alternative administrator)
181
182
183
184
185
186
  "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
187
188
189
190
191
(defun kom-extended-command ()
  "Read a LysKOM function name and call the function."
  (interactive)
  (let* ((completion-ignore-case t)
	 (alternatives (mapcar (function reverse)
192
193
194
			       (if kom-emacs-knows-iso-8859-1
				   lyskom-commands
				 lyskom-swascii-commands)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
195
	 (name (completing-read (lyskom-get-string 'extended-command)
196
				alternatives 
Linus Tolke's avatar
Linus Tolke committed
197
198
199
200
201
202
203
				;; 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))
204
				t nil))
Per Cederqvist's avatar
.    
Per Cederqvist committed
205
	 (fnc (reverse-assoc (car (all-completions name alternatives)) 
206
207
208
			     (if kom-emacs-knows-iso-8859-1
				 lyskom-commands
			       lyskom-swascii-commands))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
209
210
211
212
213
214
215
216
217
218
    (cond
     (fnc (call-interactively (car fnc)))
     (t (kom-next-command)))))


;;; Resume operation after a crash.

(defun kom-recover ()
  "Try to recover from an error."
  (interactive)
David Kågedal's avatar
Bugfix    
David Kågedal committed
219
  (lyskom-init-parse lyskom-buffer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
  (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)
  (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
241
	(lyskom-next-command))
Per Cederqvist's avatar
.    
Per Cederqvist committed
242
243
    (recenter 0)
    (move-to-window-line -1)
Lars Willför's avatar
Lars Willför committed
244
    (lyskom-set-last-viewed)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
245
246


247
;;; Author: Lars Willf|r
Per Cederqvist's avatar
.    
Per Cederqvist committed
248
249
250
251

(defun kom-next-command ()
  "Run next command or scroll one page."
  (interactive)
Lars Willför's avatar
Lars Willför committed
252
253
254
255
256
  (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
257
258
259
260
261

  
(defun kom-line-next-command ()
  "Run next command or scroll one line."
  (interactive)
Lars Willför's avatar
Lars Willför committed
262
263
264
265
266
  (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
267
268


269
270
;;; Author: Per Cederqvist

Lars Willför's avatar
Lars Willför committed
271
(defun lyskom-next-command ()
272
  "Run next command."
Per Cederqvist's avatar
.    
Per Cederqvist committed
273
  (let ((doing-default-command t))
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
    (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
293
294
295
296
297
298
299
300


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


(defun kom-initial-digit-view ()
  (interactive)
301
  (if (boundp 'unread-command-event)
302
303
      (setq unread-command-event last-command-event)
    (setq unread-command-char last-command-char))
Per Cederqvist's avatar
.    
Per Cederqvist committed
304
305
306
307
308
309
  (call-interactively 'kom-view nil))


(defun kom-view (text-no)
  "View text number TEXT-NO."
  (interactive "P")
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
  (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))
	    (recenter 0))
	(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
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356


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


357
358
;;; Modified to handle filters

Per Cederqvist's avatar
.    
Per Cederqvist committed
359
360
361
(defun kom-view-next-text ()
  "Display next text (from lyskom-reading-list)."
  (interactive)
362
363
364
  (unwind-protect
	(lyskom-start-of-command 'kom-view-next-text)
	(lyskom-tell-internat 'kom-tell-read)
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
	(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))
	      
	      (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
		  (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))
		  (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
					  (not is-review))))))))
	  (lyskom-end-of-command)))
  
Per Cederqvist's avatar
.    
Per Cederqvist committed
404

405
;;; Modified to handle filters
Per Cederqvist's avatar
.    
Per Cederqvist committed
406
407
408
409
410
411
412
413
414
415

(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)
  (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)
416
    (lyskom-view-text text-no t nil (read-info->conf-stat tri) 
417
		      priority nil t))
Per Cederqvist's avatar
.    
Per Cederqvist committed
418
419
420
421
  (lyskom-run 'main 'lyskom-end-of-command))


(defun lyskom-is-read (text-no)
Per Cederqvist's avatar
Per Cederqvist committed
422
  "Remove TEXT-NO from the list of texts to read.
Per Cederqvist's avatar
.    
Per Cederqvist committed
423
Deletes TEXT-NO from lyskom-reading-list and lyskom-to-do-list.
Per Cederqvist's avatar
Per Cederqvist committed
424
425
426
Adds info in lyskom-membership.

This function only modifies the internal state of the client. It does
Per Cederqvist's avatar
Per Cederqvist committed
427
428
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
429
430
  (read-list-delete-text text-no lyskom-reading-list)
  (read-list-delete-text text-no lyskom-to-do-list)
431
  (lyskom-is-read-handler (blocking-do 'get-text-stat text-no))
432
  (setq lyskom-normally-read-texts (cons text-no lyskom-normally-read-texts)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
433
434
435
436
437


(defun lyskom-is-read-handler (text-stat)
  "Update lyskom-membership for all recipients to TEXT-STAT."
  (lyskom-traverse
438
439
440
441
442
443
444
445
446
      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
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
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
495


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


(defun kom-go-to-next-conf ()
  "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-start-of-command 'kom-go-to-next-conf)
  (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)
  (lyskom-go-to-next-conf))


(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.
	(if (read-info->conf-stat (read-list->first lyskom-reading-list))
	    (let ((conf-stat (read-info->conf-stat
			      (read-list->first lyskom-reading-list))))
	      (lyskom-enter-conf
	       conf-stat 
	       (read-list->first lyskom-reading-list))
	      (lyskom-set-mode-line conf-stat))))
    (lyskom-insert-string 'all-conf-unread-r)
    (lyskom-set-mode-line (lyskom-get-string 'all-conf-unread-s)))
  (lyskom-end-of-command))


(defun lyskom-maybe-move-unread (burry)
Linus Tolke's avatar
Linus Tolke committed
496
497
498
  "Empty the reading list.
If the argument BURRY is non-nil and there are unread artilces left in the
reading list then the conf is inserted last in the to do list."
Per Cederqvist's avatar
.    
Per Cederqvist committed
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
  (if (not (read-list-isempty lyskom-reading-list))
      (progn
	(if burry
	    (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))
530
  (let ((num-unread (length (text-list->texts
Per Cederqvist's avatar
.    
Per Cederqvist committed
531
532
			     (read-info->text-list
			      read-info)))))
533
534
535
536
537
538
539
    (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
540
541
542
543
544
545
  

(defun lyskom-put-back-on-to-do-list (read-list low-priority)
  "Add the conferences on READ-LIST on lyskom-to-do-list.
Alter the priority to kom-low-priority if LOW-PRIORITY is non-nil."
  (lyskom-traverse
546
547
548
549
550
551
552
553
554
555
556
557
558
559
      to-read (read-list->all-entries read-list)
    (if (or (eq 'CONF (read-info->type to-read))
	    (eq 'REVIEW-MARK (read-info->type to-read)))
	;; Only unread conferences and viewings of marked texts
	;; are put back on the to-do-list.
	;; E. g. unread comments to a text are not put back since they
	;; are anyhow present on a 'CONF-item's text-list.
	(progn
	  (if (and kom-low-priority
		   low-priority)
	      (set-read-info->priority to-read kom-low-priority))
	  (read-list-enter-read-info to-read
				     lyskom-to-do-list
				     (not low-priority))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
560
561
562
563


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

564
565
566
;;; in vars.el:
;(defvar lyskom-sessions-with-unread nil
;  "Global variable. List of lyskom-sessions with unread articles.")
567
568
569
570
571
572
573
;;;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
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589

(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)
590
	(total-unread 0)
591
	(letters 0)
592
	(len 0)
Per Cederqvist's avatar
.    
Per Cederqvist committed
593
594
595
	(read-info-list nil))

    (if (null name)
596
597
598
599
600
601
602
603
	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
604
605
	    ;; This was weird. Someone had begun to write an if, but
	    ;; this was all there was: (if 
606
607
608
609
610
611
612
613
614
615
	    (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))
616
617
618
619
		    (if (= lyskom-pers-no
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq letters len))
620
		    (setq total-unread (+ total-unread len))))
621
	      (setq read-info-list (cdr read-info-list))))))
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
      (if (= unread -1)
	  (setq unread 0))

      (if (null name)
	  nil
	(setq mode-line-conf-name 
	      (substring (concat (if (lyskom-conf-stat-p conf)
				     (format "(%d/%d) " unread total-unread)
				   "")
				 name
				 (make-string 27 ? ))
			 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
643
644
645
646
647
648
		  (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
649
		  (cons lyskom-proc lyskom-sessions-with-unread-letters))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685


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

;;; +++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))


;;; ================================================================
;;; +++ Where shall this function move?

(defun lyskom-return-time (time)
  "Return a string containing the time TIME."
  (lyskom-format 'time-yyyy-mm-dd-hh-mm
	  (+ (time->year time) 1900)
	  (1+ (time->mon  time))
	  (time->mday time)
	  (time->hour time)
	  (time->min  time)))


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


David Kågedal's avatar
David Kågedal committed
686
687
688
689
690
691
692
693
694
695
696
(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
697
698
699
700
701
702
703
704
705
706
707
(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
708
709
710
711
712
713
714
715
716
717
718
719
    (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
720
721
722
723
724
725
	

(defun lyskom-insert (string)
  "Insert STRING last in current buffer.
Never scrolls but leaves the point at the end of the buffer if possible without
scrolling. Leaves the point at the end of the window if not possible.
726
727
If buffer is not on screen then doesn't move point.
The text is converted according to the value of kom-emacs-knows-iso-8859-1."
Per Cederqvist's avatar
.    
Per Cederqvist committed
728
729
730
731
732
  (goto-char (point-max))
  (let ((buffer-read-only nil))
    (insert (if kom-emacs-knows-iso-8859-1
		string
	      (iso-8859-1-to-swascii string))))
David Kågedal's avatar
David Kågedal committed
733
  (lyskom-trim-buffer)
Per Cederqvist's avatar
.    
Per Cederqvist committed
734
735
736
737
  (let ((window (get-buffer-window (current-buffer))))
    (if window
	(if (pos-visible-in-window-p (point) window)
	    nil
Lars Willför's avatar
Lars Willför committed
738
739
740
741
	  (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
742
743
744
745
746
747


(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."
748
749
750
  (lyskom-do-insert-before-prompt string))

(defun lyskom-do-insert-before-prompt (string)
Per Cederqvist's avatar
.    
Per Cederqvist committed
751
752
  (cond
   ((and lyskom-executing-command
Linus Tolke's avatar
Linus Tolke committed
753
754
	 (not lyskom-is-waiting)
	 (not (eq lyskom-is-waiting t)))
Per Cederqvist's avatar
Per Cederqvist committed
755
756
    ;; Don't insert the string until the current command is finished.
    (if (null lyskom-to-be-printed-before-prompt)
757
	(setq lyskom-to-be-printed-before-prompt (lyskom-queue-create)))
758
759
    (lyskom-queue-enter lyskom-to-be-printed-before-prompt 
			(list string)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
760
761
762
763
764
765
   (t
    (goto-char (point-max))
    (let* ((window (get-buffer-window (current-buffer)))
	   (pv (and window
		    (pos-visible-in-window-p (point) window))))
      (beginning-of-line)
766
767
      (let ((buffer-read-only nil)
	    (start (point)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
	(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)))))))))


(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
788
789
	(message "%s" str)
      (message "%s" (iso-8859-1-to-swascii str)))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
790
791


792
793
794
795
796
(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
797
798
	(error "%s" str)
      (error "%s" (iso-8859-1-to-swascii str)))))
799
800


Lars Willför's avatar
Lars Willför committed
801
802
803
804
805
806
(defun lyskom-set-last-viewed ()
  (save-excursion
    (vertical-motion 0)
    (setq lyskom-last-viewed (point))))


Per Cederqvist's avatar
.    
Per Cederqvist committed
807
808
809
;;; ================================================================
;;;                  Extended string formatting

810
811
812
;;; Author: David Byers
;;; Original code: Inge Wallin

Per Cederqvist's avatar
.    
Per Cederqvist committed
813

814
815
816
(defvar lyskom-format-format
  "%\\(=\\)?\\(-?[0-9]+\\)?\\(#\\([0-9]+\\)\\)?\\(:\\)?\\([][@MmPpnrtsdoxc]\\)"
  "regexp matching format string parts.")
Per Cederqvist's avatar
.    
Per Cederqvist committed
817
818
819
820
821
822
823

(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."
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
  (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)
  (lyskom-do-format format-string argl))

(defun lyskom-format-insert (format-string &rest argl)
  "Format and insert a string according to FORMAT-STRING"
  (lyskom-insert (lyskom-do-format format-string argl)))

(defun lyskom-format-insert-before-prompt (format-string &rest argl)
  (lyskom-insert-before-prompt (lyskom-do-format format-string argl)))


(defun lyskom-do-format (format-string &optional argl)
  (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
854
855
        (if (and (boundp 'lyskom-buffer)
		 lyskom-buffer)
David Kågedal's avatar
David Kågedal committed
856
            (set-buffer lyskom-buffer))
David Kågedal's avatar
David Kågedal committed
857
858
859
860
861
862
863
864
865
	(condition-case error
	    (setq state (lyskom-format-aux (make-format-state
					    fmt
					    0
					    argl
					    "")))
	  (lyskom-format-error
	   (error "LysKOM internal error formatting %s: %s%s"
		  format-string (nth 1 error) (nth 2 error))))))
866
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
916
917
918
919
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
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
    (format-state->result state)))





(defun lyskom-format-aux (format-state)
  (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)
          pad-length (if (match-beginning 2)
                         (string-to-int (substring 
                                         (format-state->format-string
                                          format-state)
                                         (match-beginning 2)
                                         (match-end 2)))
                       nil)
	      arg-no (if (match-beginning 4)
                     (string-to-int (substring (format-state->format-string
                                                format-state)
                                               (match-beginning 4)
                                               (match-end 4)))
                   nil)
	      colon-flag (match-beginning 5)
	      format-letter (if (match-beginning 6)
                            (aref (format-state->format-string 
                                   format-state)
                                  (match-beginning 6))
                          (signal 'lyskom-internal-error
                                  (list 'lyskom-format-aux 
                                        (format-state->format-string
                                         format-state)))))

    ;;
    ;;  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
               ? )))))))
  (lyskom-tweak-format-state format-state))


(defun lyskom-format-aux-help (format-state
                               pad-length
                               arg-no
                               format-letter
                               equals-flag
                               colon-flag
                               pad-letter)
  (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
990
        (signal 'lyskom-format-error (list 'lyskom-format
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
                                             ": 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
1008
                         (t (signal 'lyskom-format-error
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
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
                                    (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
     ;;
     ((= format-letter ?\[)
      (setq format-state (lyskom-format-aux format-state)
            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
            (cond ((stringp arg) arg)
                  ((integerp arg)
                   (let ((tmp (blocking-do 'get-conf-stat arg)))
                     (if (null tmp)
                         (progn
                           (setq colon-flag t)
                           (lyskom-format (if (= format-letter ?P)
1074
1075
1076
					      (if (eq arg 0)
						  'person-is-anonymous
						'person-does-not-exist)
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
                                            'conference-does-not-exist)
                                          arg))
                       (setq arg tmp)
                       (conf-stat->name arg))))
                  ((lyskom-conf-stat-p arg) (conf-stat->name arg))
                  (t (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error")))))
      (if (and (not colon-flag)
               (lyskom-conf-stat-p arg))
          (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) 
                   (let ((tmp (blocking-do 'get-conf-stat arg)))
                     (if (null tmp)
                         (int-to-string arg)
                       (setq arg tmp)
                       (int-to-string arg))))
                  ((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)
1136
      (setq result (cond ((stringp arg) (lyskom-button-transform-text arg))
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
                         (t (signal 'lyskom-internal-error
                                    (list 'lyskom-format
                                          ": argument error")))))
      (if (not colon-flag)
          (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)
      (setq result
1148
            (cond ((stringp arg) (lyskom-format-text-body arg))
1149
                  ((lyskom-text-p arg) 
1150
		   (lyskom-format-text-body (text->text-mass arg)))
1151
1152
1153
1154
1155
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
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
                  (t (signal 'lyskom-internal-error
                             (list 'lyskom-format
                                   ": argument error"))))))
     
     (t (signal 'lyskom-internal-error
                (list 'lyskom-format-help format-letter))))
    
    ;;
    ;; 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)))
             (if (< pad-length 0)	; LEFT justify
                 (setq result (concat result padstring)
                       prop-adjust-end (- (- abs-length (length result))))
               (setq result (concat padstring result)
                     prop-adjust-start (- abs-length (length result))))))
          ((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
      (add-text-properties (car dp)
                           (length (format-state->result format-state))
                           (cdr dp)
                           (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
1204
1205


1206
1207
1208
1209
1210
1211
1212
1213
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
;;; ================================================================
;;;			 Text body formatting

;;; Author: David K}gedal
;;; This should be considered an experiment
(defvar lyskom-format-experimental nil)

(defun lyskom-format-text-body (text)
  (if lyskom-format-experimental
      (cond
       ((and (string-match "\\`html:" text)
	     (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))))
       ((and (fboundp 'format-decode-buffer)
	     (string-match "\\`enriched:" text))
	(let ((tmpbuf (generate-new-buffer "lyskom-html")))
	  (unwind-protect
	      (save-excursion
		(set-buffer tmpbuf)
		(insert (substring text 9))
		(format-decode-buffer 'text/enriched)
		(buffer-string))
	    (kill-buffer tmpbuf))))
       (t
	(lyskom-button-transform-text text)))
    (lyskom-button-transform-text text)))
    
	    
		  

Per Cederqvist's avatar
.    
Per Cederqvist committed
1242
1243
1244
1245
1246
1247
1248
1249
1250
;;; ================================================================
;;;                      Iso-8859-1 converting

;;; Author: Linus Tolke Y


(defvar iso-8859-1-table 
  "	

 !\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~	
1251

  !c#$Y|$\"c+?!-R~C+23'u$-,10?????AAAA[][CE@EEIIIIDNOOOO\\*\\UUU^YTBaaaa{}{ce`eeiiiidnoooo|/|uuu~yty"
Per Cederqvist's avatar
.    
Per Cederqvist committed
1252
1253
1254
1255
1256
1257
1258
  "*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."
1259
1260
1261
1262
1263
1264
1265
1266
  (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
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
1283
1284
1285
1286
1287
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
1301
1302
1303


;;;; ================================================================
;;;;                         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))
    (backward-paragraph arg))
  (end-of-line))


(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))
    (forward-paragraph arg))
  (end-of-line))


(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)
1304
1305
		(point)))
	  (name (read-file-name 
1306
1307
1308
1309
1310
1311
1312
1313
		 (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))))
1314
1315
1316
		 (file-name-directory lyskom-saved-file-name)
		 lyskom-saved-file-name
		 nil)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1317
      (append-to-file p1 p2
1318
1319
		      (expand-file-name name))
      (setq lyskom-saved-file-name name))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1320
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
1337
1338
1339
1340
1341
1342
1343
1344
1345
1346
1347


;;; ================================================================
;;;                             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.
	 This function checks if doing-default-command and first-time-around 
	 are bound. The text entered in the buffer is chosen according to this"
  (if (and lyskom-is-waiting
	   (listp lyskom-is-waiting))
      (progn
	(setq lyskom-is-waiting nil)
	(lyskom-end-of-command)))
  (if (and lyskom-executing-command (not may-interrupt))
1348
      (lyskom-error "%s" (lyskom-get-string 'wait-for-prompt)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
  (if (not (and (boundp 'doing-default-command)
		doing-default-command))
      (cond
       ((and (boundp 'first-time-around)
	     first-time-around))
       ((stringp function) (lyskom-insert function))
       ((and function (symbolp function))
	(let ((name (lyskom-command-name function)))
	  (if name (lyskom-insert name)))))
    (save-excursion
Linus Tolke's avatar
Linus Tolke committed
1359
1360
1361
1362
      (if (not lyskom-no-prompt)
	  (let ((buffer-read-only nil))
	    (goto-char (point-max))
	    (delete-char (- (length lyskom-prompt-text))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1363
    (lyskom-insert lyskom-prompt-executing-default-command-text))
1364
1365
1366
1367
  (if (pos-visible-in-window-p (point-max))
      (save-excursion
	(goto-char (point-max))
	(lyskom-set-last-viewed)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1368
1369
1370
1371
1372
1373
1374
1375
1376
1377
  (setq lyskom-executing-command t)
  (lyskom-insert "\n")
  (if (and (eq (window-buffer (selected-window))
	       (current-buffer))
	   (= (point) (point-max)))	;Tell user something is
      (progn
	(beginning-of-line 0)		;about to happen.
	(sit-for 0)))
;  (lyskom-scroll)
  (if kom-page-before-command		;Nice with dumb terminals.
1378
1379
1380
      (if (or (not (listp kom-page-before-command))
	      (memq function kom-page-before-command))
	  (recenter 0))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1381
1382
1383


(defun lyskom-end-of-command ()
Linus Tolke's avatar
Linus Tolke committed
1384
  "Print prompt, maybe scroll, prefetch info."
Per Cederqvist's avatar
.    
Per Cederqvist committed
1385
  (message "")
1386
1387
1388
1389
1390
1391
1392
  (let ((start 0))
    (while (and lyskom-to-be-printed-before-prompt
		(lyskom-queue->first lyskom-to-be-printed-before-prompt))
      (setq start (point-max))
      (lyskom-insert (car (lyskom-queue->first 
			   lyskom-to-be-printed-before-prompt)))
      (lyskom-queue-delete-first lyskom-to-be-printed-before-prompt)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1393
  (setq lyskom-executing-command nil)
Linus Tolke's avatar
Linus Tolke committed
1394
  (setq lyskom-no-prompt t)
Per Cederqvist's avatar
.    
Per Cederqvist committed
1395
1396
  (lyskom-scroll)
  (if (pos-visible-in-window-p (point-max) (selected-window))
Lars Willför's avatar
Lars Willför committed
1397
      (lyskom-set-last-viewed))
Linus Tolke's avatar
Linus Tolke committed
1398
1399
  (lyskom-prefetch-and-print-prompt)
  (run-hooks 'lyskom-after-command-hook))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1400
1401
1402


(defun lyskom-print-prompt ()
Linus Tolke's avatar
Linus Tolke committed
1403
  "Print prompt if the client knows which command will be default.
David Kågedal's avatar
David Kågedal committed
1404
Set lyskom-no-prompt otwherwise. Tell server what I am doing."
Linus Tolke's avatar
Linus Tolke committed
1405
  (setq lyskom-no-prompt nil)
Per Cederqvist's avatar
.    
Per Cederqvist committed
1406
1407
1408
1409
1410
1411
1412
1413
1414
1415
1416
1417
1418
1419
1420
1421
1422
1423
1424
1425
1426
1427
1428
1429
1430
1431
1432
1433
1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
  (let ((to-do (lyskom-what-to-do)))
    (setq lyskom-command-to-do to-do)
    (cond
     
     ((eq to-do 'next-pri-conf)
      (lyskom-insert-string 'go-to-pri-conf-prompt)
      (beep))

     ((eq to-do 'next-pri-text)
      (lyskom-insert-string 'read-pri-text-conf)
      (beep))

     ((eq to-do 'next-text)
      (lyskom-insert
       (let ((read-info (read-list->first lyskom-reading-list)))
	 (cond
	  ((eq 'REVIEW (read-info->type read-info))
	   (lyskom-get-string 'review-next-text-prompt))
	  ((eq 'REVIEW-TREE (read-info->type read-info))
	   (lyskom-get-string 'review-next-comment-prompt))
	  ((eq 'REVIEW-MARK (read-info->type read-info))
	   (lyskom-get-string 'review-next-marked-prompt))
	  ((= lyskom-current-conf lyskom-pers-no)
	   (lyskom-get-string 'read-next-letter-prompt))
	  ((eq 'FOOTN-IN (read-info->type read-info))
	   (lyskom-get-string 'read-next-footnote-prompt))
	  ((eq 'COMM-IN (read-info->type read-info))
	   (lyskom-get-string 'read-next-comment-prompt))
	  (t (lyskom-get-string 'read-next-text-prompt))))))

     ((eq to-do 'next-conf)
      (lyskom-insert
       (cond
	((eq 'REVIEW-MARK 
	     (read-info->type (read-list->first lyskom-to-do-list)))
	 (lyskom-get-string 'go-to-conf-of-marked-prompt))
	((/= lyskom-pers-no
	     (conf-stat->conf-no
	      (read-info->conf-stat (read-list->first
				     lyskom-to-do-list))))
	 (lyskom-get-string 'go-to-next-conf-prompt))
	(t (lyskom-get-string 'go-to-your-mailbox-prompt)))))

     ((eq to-do 'when-done)
      (if (not lyskom-is-writing)
	  (lyskom-tell-server kom-mercial))
      (setq lyskom-is-waiting t)
      (lyskom-insert (let ((command (lyskom-what-to-do-when-done t)))
		       (cond			    
			((lyskom-command-name command))
			((and (stringp command)
			      (lyskom-command-name (key-binding command))))
			(t (lyskom-format 'the-command command))))))

Linus Tolke's avatar
Linus Tolke committed
1460
1461
1462
1463
1464
1465
1466
     ((eq to-do 'unknown)		;Pending replies from server.
      (setq lyskom-no-prompt t))

     (t (signal 'lyskom-internal-error '(lyskom-print-prompt)))))

  (if lyskom-no-prompt
      nil
David Kågedal's avatar
David Kågedal committed
1467
    (lyskom-insert lyskom-prompt-text))
Linus Tolke's avatar
Linus Tolke committed
1468

Linus Tolke's avatar
Linus Tolke committed
1469
  (lyskom-set-mode-line))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1470
1471
1472
1473
1474
1475
1476
1477
1478
1479
1480
1481
1482
1483
1484
1485
1486
1487
1488
1489
1490
1491
1492
1493
1494
1495
1496
1497
1498
1499
1500
1501
1502


(defun lyskom-what-to-do ()
  "Check what is to be done. Return an atom as follows:
	next-pri-text	There is a text with higher priority to be read.
	next-pri-conf	There is a conference with higher priority to be read.
	next-text	There are texts on lyskom-reading-list.
	next-conf	There are texts on lyskom-to-do-list.
	when-done	There are no unread texts.
	unknown	        There are pending replies."
  (cond
   ((and kom-higher-priority-breaks
	 (not (read-list-isempty lyskom-reading-list))
	 (not (read-list-isempty lyskom-to-do-list))
	 (let ((type (read-info->type (read-list->first lyskom-reading-list))))
	   (or (eq kom-higher-priority-breaks 'express)
	       (eq type 'CONF)
	       (eq type 'REVIEW)
	       (eq type 'REVIEW-MARK)))
	 (> (read-info->priority (read-list->first lyskom-to-do-list))
	    (read-info->priority (read-list->first lyskom-reading-list))))
    (if (> (length 
	    (text-list->texts 
	     (read-info->text-list
	      (read-list->first lyskom-to-do-list))))
	   1)
       'next-pri-conf
      'next-pri-text))
   ((not (read-list-isempty lyskom-reading-list))
    'next-text)
   ((not (read-list-isempty lyskom-to-do-list))
    'next-conf)
   ((and lyskom-membership-is-read
Linus Tolke's avatar
Linus Tolke committed
1503
1504
	 (= (1+ lyskom-last-conf-received)
	    (length lyskom-membership)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1505
1506
1507
1508
1509
1510
1511
1512
1513
1514
1515
1516
1517
1518
1519
1520
1521
1522
1523
1524
1525
1526
1527
1528
1529
1530
1531
    'when-done)
   (t 'unknown)))


(defun lyskom-what-to-do-when-done (&optional nochange)
  "Returns a command, the next command to do from the kom-do-when-done.
If optional argument NOCHANGE is non-nil then the list wont be altered."
  (let* ((now (cdr lyskom-do-when-done))
	 (all (car lyskom-do-when-done))
	 (next (cond
		((and now (eq now all) (cdr all))
		 (cdr all))
		(t all)))
	 (command
	  (cond
	   ((commandp (car now)) (car now))
	   ((and (listp (car next))
		 (not (eq (car (car next))
			  'lambda)))
	    (car (setq now (car next))))
	   (t (car (setq now next))))))
    (if nochange
	nil
      (setq lyskom-do-when-done (cons next (cdr now))))
    command))


Linus Tolke's avatar
Linus Tolke committed
1532
1533
1534
1535
1536
1537
1538
1539
1540
1541
1542
1543
1544
1545
1546
1547
1548
1549
1550
(defun lyskom-prefetch-and-print-prompt ()
  "Prefetch info if needed. Print prompt if not already printed."
  (if (< (lyskom-known-texts)
	 lyskom-prefetch-conf-tresh)
      (lyskom-prefetch-conf))
  (lyskom-prefetch-text)
  (if (and (listp lyskom-is-waiting)
	   (eval lyskom-is-waiting))
      (progn
	(setq lyskom-is-waiting nil)
	(beep)
	(lyskom-end-of-command)
	(if (read-list-isempty lyskom-reading-list)
	    (kom-go-to-next-conf))
	(kom-next-command)))
  (if lyskom-no-prompt
      (lyskom-print-prompt)))


Per Cederqvist's avatar
.    
Per Cederqvist committed
1551
1552
1553
1554
1555
1556
(defun lyskom-known-texts ()
  "Count how many unread texts the user have, that the client knows about."
  (apply '+ (mapcar '(lambda (x) (1- (length (read-info->text-list x))))
		    (read-list->all-entries lyskom-to-do-list))))


Linus Tolke's avatar
Linus Tolke committed
1557
1558
1559
;;
;; Called from among others kom-list-news.
;;
1560
1561
1562
1563
1564
1565
1566
1567
1568
1569
1570
1571
1572
1573
1574
1575
1576
1577

;;(defun lyskom-prefetch-all-confs (num-arg continuation)
;;  "Gets all conferences using prefetch. Calls itself recursively.
;;When all confs are fetched then the function in the argument
;;CONTINUATION is called."
;;  ;; If all conf-stats are fetched, run the continuation function
;;  (if (>= lyskom-last-conf-fetched
;;	  (1- (length lyskom-membership)))
;;      (lyskom-run 'main 'lyskom-run 'prefetch continuation num-arg)

;;    ;; ...otherwise fetch next conf-stat.
;;    (let ((lyskom-prefetch-conf-tresh lyskom-max-int)
;;	  (lyskom-prefetch-confs lyskom-max-int))
;;      (lyskom-prefetch-conf))
;;    (lyskom-run 'main 'lyskom-prefetch-all-confs num-arg continuation)))

(defun lyskom-prefetch-all-confs ()
  "Gets all conferences using prefetch."
Linus Tolke's avatar
Linus Tolke committed
1578
1579
  (if (>= lyskom-last-conf-fetched
	  (1- (length lyskom-membership)))
1580
      nil				; done
Linus Tolke's avatar
Linus Tolke committed
1581
1582
1583
    (let ((lyskom-prefetch-conf-tresh lyskom-max-int)
	  (lyskom-prefetch-confs lyskom-max-int))
      (lyskom-prefetch-conf))
1584
    (lyskom-prefetch-all-confs)))
Linus Tolke's avatar
Linus Tolke committed
1585
1586
1587
1588
1589
1590
1591


;; ---------------------------------------------------------
;; prefetch conf-stats


(defun lyskom-prefetch-conf ()
1592
1593
1594
1595
1596
1597
1598
1599
1600
1601
1602
1603
1604
1605
1606
1607
1608
1609
1610
1611
1612
1613
1614
1615
1616
1617
1618
1619
1620
1621
1622
1623
1624
1625
1626
1627
1628
1629
1630
  "Fetch conf-stats for next few conferences from lyskom-membership.
This is the main prefetch things function.

This is initiated by lyskom-refetch.

The following variables and functions are involved:
lyskom-last-conf-fetched, lyskom-last-conf-received, lyskom-last-conf-done
(this functions variables).
lyskom-membership, lyskom-unread-confs (set at login).
Functions:
lyskom-prefetch-conf, starts the ball going, later verifies that everything
is done.
lyskom-prefetch-handle-conf, starts the ball for a conf.

Idea:
This functions fetches one conf from lyskom-unread-confs, creates an empty
read-list entry and fires away a lyskom-prefetch-handle-conf. The 
lyskom-prefetch-handle-conf fills the read-list entry with articles to be
read. When all articles are fetched then lyskom-prefetch-handle-conf
will increase lyskom-last-conf-done and call lyskom-prefetch-conf that fetches
the next conf.

If we start reading before everything is fetched then two things will happen.
For every thing we do (every prompt we get) there will be another 
lyskom-prefetch-conf started and possibly another thread of 
lyskom-prefetch-handle-conf. This will not be a problem.

List news and other things that require the correct count of articles will
have to wait. The correct way of waiting is:
    (while (not (lyskom-prefetch-done))
      (lyskom-prefetch-conf)
      (accept-process-output))

If we just want to know wether we have fetched all info or not we do the test
(lyskom-prefetch-done)."
  
  ;; Algoritm:
  ;;

Linus Tolke's avatar
Linus Tolke committed
1631
1632
1633
1634
1635
1636
1637
1638
1639
1640
1641
1642
1643
1644
1645
1646
  (let ((lyskom-prefetch-confs lyskom-prefetch-confs))
    (while (and (< lyskom-last-conf-fetched
		   (1- (length lyskom-membership)))
		(< (- lyskom-last-conf-fetched lyskom-last-conf-received)
		   lyskom-prefetch-confs))
      (++ lyskom-last-conf-fetched)
      (let ((membership (elt lyskom-membership lyskom-last-conf-fetched)))
	(if (lyskom-conf-no-list-member (membership->conf-no membership)
					lyskom-unread-confs)
	    (initiate-get-conf-stat 'main 'lyskom-prefetch-handle-conf
				    (membership->conf-no membership)
				    membership)
	  (++ lyskom-prefetch-confs)
	  (++ lyskom-last-conf-received))))))


1647
1648
1649
1650
1651
1652
(defun lyskom-prefetch-done ()
  "Returns t if lyskom has fetched all its info."
  (> lyskom-last-conf-done
     (length lyskom-membership)))


Linus Tolke's avatar
Linus Tolke committed
1653
1654
1655
1656
1657
1658
1659
1660
1661
1662
1663
1664
1665
1666
1667
1668
1669
1670
1671
1672
1673
1674
1675
1676
1677
1678
1679
1680
1681
1682
1683
1684
1685
1686
1687
1688
1689
1690
(defun lyskom-prefetch-handle-conf (conf-stat membership)
  "Check if there is any unread texts in a conference.
Args: CONF-STAT MEMBERSHIP"
  (++ lyskom-last-conf-received)
  (cond
   ((> (+ (conf-stat->first-local-no conf-stat)
	  (conf-stat->no-of-texts conf-stat)
	  -1)
       (membership->last-text-read membership))
    ;; There are (probably) some unread texts in this conf.
    (initiate-get-map 'prefetch 'lyskom-prefetch-handle-map
		      (conf-stat->conf-no conf-stat)
		      (1+ (membership->last-text-read membership))
		      (+ (conf-stat->no-of-texts conf-stat)
			 (conf-stat->first-local-no conf-stat)
			 (- (membership->last-text-read membership)))
		      membership
		      conf-stat))
   (t 
    (lyskom-prefetch-and-print-prompt))))


(defun lyskom-prefetch-handle-map (map membership conf-stat)
  "Add info about unread texts in a conf to the lyskom-to-do-list.
Args: MAP MEMBERSHIP CONF-STAT.
MAP is the mapping from local to global text-nos for (at least) all
texts after membership->last-text-read. MEMBERSHIP is info about the
user's membership in the conference."
  (let ((unread (lyskom-list-unread map membership)))
    (cond
     (unread
      (read-list-enter-read-info
         (lyskom-create-read-info
	    'CONF
	    conf-stat
	    (membership->priority membership)
	    (lyskom-create-text-list unread))
	 lyskom-to-do-list))))
1691
1692
1693
1694
  ;; This could be the problem why it sometimes hang during
  ;; login. But I don't understand how it works. /davidk
  (lyskom-prefetch-and-print-prompt)
  )
Linus Tolke's avatar
Linus Tolke committed
1695
1696


Per Cederqvist's avatar
.    
Per Cederqvist committed
1697
1698
1699
1700
1701
1702
1703
1704
1705
1706
1707
1708
1709
1710
1711
1712
1713
1714
1715
1716
1717
1718
(defun lyskom-list-unread (map membership)
  "Args: MAP MEMBERSHIP. Return a list of unread texts.
The list consists of text-nos."
  (let ((res nil)
	(last-read (membership->last-text-read membership))
	(read (membership->read-texts membership))
	(first (map->first-local map))
	(i (length (map->text-nos map)))
	(the-map (map->text-nos map)))
    (while (> i 0)
      (-- i)
      (cond
       ((zerop (elt the-map i)))	;Deleted text - do nothing.
       ((<= (+ first i) last-read))	;Already read - do nothing.
       ((lyskom-vmemq  (+ i first) read)) ;Already read - do nothing.
       (t				;Unread - add to list.
	(setq res (cons
		   (elt the-map i)
		   res)))))
    res))


Linus Tolke's avatar
Linus Tolke committed
1719
1720
1721
1722
1723
1724
1725
1726
1727
1728
1729
1730
1731
1732
1733
1734
1735
1736
1737
1738
1739
1740
1741
1742
1743
1744
1745
1746
1747
1748
1749
1750
1751
1752
1753
1754
1755
1756
1757
1758
1759
1760
1761
1762
1763
1764
1765
1766
1767
1768
1769
1770
1771
1772
1773
1774
1775
1776
1777
(defun lyskom-conf-fetched-p (conf-no)
  "Return t if CONF-NO has been prefetched."
  (let ((n lyskom-last-conf-received)
	(result nil))
    (while (and (not result)
		(>= n 0))
      (if (= (membership->conf-no (elt lyskom-membership n))
	     conf-no)
	  (setq result t))
      (-- n))
    result))


;;-------------------------------------------------------
;; prefetch text-stats

(defun lyskom-prefetch-text ()
  "Make sure that at least lyskom-prefetch-texts texts are fetched."
  (lyskom-prefetch-from-rlist
   (lyskom-prefetch-from-rlist lyskom-prefetch-texts
			       (read-list->all-entries lyskom-reading-list))
   (read-list->all-entries lyskom-to-do-list)))


(defun lyskom-prefetch-from-rlist (n-texts rlist)
  "Prefetch first N-TEXTS texts from RLIST.
Returns number of texts that could not be fetched.
RLIST is a list of reading-info."
  (cond
   ((< n-texts 1)
    0)
   ((null rlist)
    n-texts)
   (t
    (lyskom-prefetch-from-rlist
     (lyskom-prefetch-from-list
      n-texts
      (cdr (read-info->text-list (car rlist))))
     (cdr rlist)))))


(defun lyskom-prefetch-from-list (n-texts list)
  "Prefetch first N-TEXTS texts from LIST.
Returns number of texts that could not be fetched.
RLIST is a list of text-nos. Texts whose text-no is present on
lyskom-fetched-texts are not fetched."
  (while (and (not (null list)) (> n-texts 0))
    ;; Fetch this text - but only if we are not already fetching it.
    (if (memq (car list) lyskom-fetched-texts)
	nil				;already fetched (but maybe not yet
					;received).
      (initiate-get-text-stat 'background nil (car list))
      (initiate-get-text 'background nil (car list))
      (setq lyskom-fetched-texts (cons (car list) lyskom-fetched-texts)))
    (setq list (cdr list))
    (-- n-texts))
  n-texts)


Per Cederqvist's avatar
.    
Per Cederqvist committed
1778
1779
1780
1781
1782
1783
1784
1785
1786
1787
1788
1789
1790
1791
1792
;;;; ================================================================


(defun lyskom-vmemq (elt vector)
  "Return t if ELT is a member of (present in) VECTOR."
  (let ((found nil)
	(i (length vector)))
    (while (and (> i 0)
		(not found))
      (-- i)
      (if (eq elt (aref vector i))
	  (setq found t)))
    found))

      
1793
(defun lyskom-read-num-range (low high &optional prompt show-range default)
Per Cederqvist's avatar
.    
Per Cederqvist committed
1794
  "Read a number from the minibuffer.
1795
Args: LOW HIGH &optional PROMPT SHOW-RANGE with default value DEFAULT.
Per Cederqvist's avatar
.    
Per Cederqvist committed
1796
1797
1798
1799
1800
1801
1802
1803
1804
1805
1806
1807
The read number must be within the range [LOW HIGH].
If SHOW-RANGE is non-nil, the prompt will include the range for information
to the user."
  (let ((number (1- low)))
    (while (or (< number low)
	       (> number high))
      (setq number (lyskom-read-number 
		    (concat (if prompt
				prompt
			      (lyskom-get-string 'give-a-number))
			    (if show-range
				(format "(%d-%d) " low high)
1808
1809
			      ""))
		    default)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1810
1811
1812
1813
1814
1815
1816
1817
1818
1819
1820
1821
1822
1823
1824
1825
1826
1827
    number))


(defun lyskom-read-number (&optional prompt default)
  "Read a number from the minibuffer. Optional arguments: PROMPT DEFAULT
If DEFAULT is non-nil, it is written within parenthesis after the prompt.
DEFAULT could also be of the type which (interactive P) generates.
If quit is typed it executes lyskom-end-of-command."
  (let ((numdefault (cond ((null default) nil)
			  ((integerp default) default)
			  ((listp default) (car default))
			  (t nil)))
	(number nil)
	(numstr nil)
	(quit nil))
    (while (not number)
      (setq quit t)
      (setq numstr
1828
1829
1830
1831
1832
1833
1834
1835
	    (prog1
		(lyskom-read-string
		 (concat (if prompt 
			     prompt
			   (lyskom-get-string 'give-a-number))
			 (if numdefault 
			     (format " (%d) " numdefault))))
	      (setq quit nil)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1836
1837
1838
1839
1840
1841
1842
1843
1844
1845
      (cond ((and (string= numstr "") 
		  numdefault)
	     (setq number numdefault))
	    ((string-match "\\`[0-9]+\\'" numstr)
	     (setq number (string-to-int numstr)))
	    (t (beep))))
    number))


(defun lyskom-read-string (prompt &optional initial)
Linus Tolke's avatar
Linus Tolke committed
1846
1847
1848
1849
1850
  "Read a string from the minibuffer. Arguments: PROMPT INITIAL"
  (read-string (if kom-emacs-knows-iso-8859-1
		   prompt
		 (iso-8859-1-to-swascii prompt))
	       initial))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1851
1852
1853
1854



(defun ja-or-nej-p (prompt &optional initial-input)
Linus Tolke's avatar
Linus Tolke committed
1855
1856
1857
  "Same as yes-or-no-p but language-dependent.
Uses lyskom-message, lyskom-read-string to do interaction and
lyskom-get-string to retrieve regexps for answer and string for repeated query."
Per Cederqvist's avatar
.    
Per Cederqvist committed
1858
1859
1860
1861
1862
1863
  (let ((answer "")
	(nagging nil))
    (while (not (or (string-match (lyskom-get-string 'yes-regexp) answer)
		    (string-match (lyskom-get-string 'no-regexp) answer)))
      (if nagging
	  (progn
1864
	    (lyskom-message "%s" (lyskom-get-string 'yes-or-no-nag))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1865
1866
1867
1868
1869
1870
1871
1872
	    (sit-for 2)))
      (setq answer (lyskom-read-string (concat prompt (lyskom-get-string 'yes-or-no))
				       initial-input))
      (setq nagging t))
    (not (string-match (lyskom-get-string 'no-regexp) answer))))


(defun j-or-n-p (prompt)
Linus Tolke's avatar
Linus Tolke committed
1873
1874
1875
  "Same as y-or-n-p but language-dependent.
Uses lyskom-message, lyskom-read-string to do interaction and
lyskom-get-string to retrieve regexps for answer and string for repeated query."
Per Cederqvist's avatar
.    
Per Cederqvist committed
1876
1877
1878
1879
  (let ((input-char ?a)
	(cursor-in-echo-area t)
	(nagging nil))
    (while (not (char-in-string input-char (lyskom-get-string 'y-or-n-instring)))
1880
1881
1882
1883
1884
	(lyskom-message "%s" (concat (if nagging 
					 (lyskom-get-string 'j-or-n-nag)
				       "") 
				     prompt
				     (lyskom-get-string 'j-or-n)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1885
1886
1887
1888
1889
1890
1891
	(if nagging 
	    (beep))
	(setq input-char (read-char))
	(setq nagging t))
    (char-in-string input-char (lyskom-get-string 'y-instring))))

  
Linus Tolke's avatar
Linus Tolke committed
1892
1893
1894
1895
1896
1897
1898
1899
1900
1901
1902
1903
1904
1905
1906
1907
1908
1909
1910
1911
1912
;;; lyskom-j-or-n-p, lyskom-ja-or-no-p
;;; These versions perform lyskom-end-of-command if quit is signalled
;; Author: Linus Tolke

(defun lyskom-j-or-n-p (prompt)
  "Same as j-or-n-p but performs lyskom-end-of-command if quit."
  (condition-case error
      (j-or-n-p prompt)
    (quit (lyskom-end-of-command)
	  (signal 'quit "In lyskom-j-or-n-p"))))


(defun lyskom-ja-or-nej-p (prompt &optional initial-input)
  "Same as ja-or-nej-p but performs lyskom-end-of-command if quit."
  (condition-case error
      (ja-or-nej-p prompt initial-input)
    (quit (lyskom-end-of-command)
	  (signal 'quit "In lyskom-j-or-n-p"))))



Per Cederqvist's avatar
.    
Per Cederqvist committed
1913
1914
1915
1916
1917
1918
1919
1920
1921
1922
1923
1924
1925
1926
1927
1928
1929
1930
1931
1932
1933
1934
1935
1936
1937
1938
1939
1940
1941
1942
1943
1944
1945
1946
1947
1948
1949
1950
1951
1952
1953
1954
1955
(defun lyskom-membership-< (a b)
  "Retuns t if A has a higher priority than B. A and B are memberships."
  (> (membership->priority a)
     (membership->priority b)))


(defun impl ()
  (error "Not implemented"))


(defun lyskom-call-hook (hook-name &rest args)
  "Calls a hook with parameters.
If HOOK-NAME is bound, it is either a function name or a list of functions
to apply to the ARGS."

  (if (and (boundp hook-name) (eval hook-name))
      (if (listp (eval hook-name))
	  (mapcar '(lambda (fn)
		     (apply fn args))
		  (eval hook-name))
	(apply (eval hook-name) args))))


;;;; ================================================================
;;;; Subroutines - or as near as you can get with this com-packet.
;;;; (I know that this isn't beautiful.)


;;; Print a name.

(defun lyskom-queue-print-name (kom-queue conf-no is-person &optional format)
  "Print the name of CONF-NO. Args: KOM-QUEUE CONF-NO IS-PERSON FORMAT.
IS-PERSON should be non-nil if it is a person.
If FORMAT is non-nil this is the length the printed string should have. If nil
then a newline is printed after the name instead."
  (initiate-get-conf-stat kom-queue 'lyskom-queue-print-name-2
			  conf-no conf-no is-person format))


(defun lyskom-queue-print-name-2 (conf-stat conf-no is-person format)
  (if format
      (cond
       ((null conf-stat)
1956
1957
1958
1959
1960
1961
1962
1963
1964
	(lyskom-insert
	 (lyskom-fix-str format
			 (if (not is-person)
			     (lyskom-format 'conference-does-not-exist
					    conf-no)
			   (if (eq conf-no 0)
			       (lyskom-format 'person-is-anonymous)
			     (lyskom-format 'person-does-not-exist
					    conf-no))))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1965
1966
1967
1968
1969
       (t (lyskom-insert (lyskom-fix-str format
					 (conf-stat->name conf-stat)))))
    (cond
     ((null conf-stat)
      (lyskom-insert (if (not is-person)
1970
			 (lyskom-format 'conference-does-not-exist
Per Cederqvist's avatar
.    
Per Cederqvist committed
1971
					conf-no)
1972
1973
1974
1975
		       (if (eq conf-no 0)
			   (lyskom-format 'person-is-anonymous)
			 (lyskom-format 'person-does-not-exist
					conf-no))))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1976
1977
1978
1979
1980
1981
1982
1983
      (lyskom-insert "\n"))
     (t (lyskom-print-name conf-stat)))))


;;; The filter.

(defun lyskom-filter (proc output)
  "Receive replies from LysKOM server."
David Kågedal's avatar
David Kågedal committed
1984
  (sit-for 0)				; Why?
1985
  (let (; (inhibit-quit t)		;inhibit-quit is automatically set
Per Cederqvist's avatar
Per Cederqvist committed
1986
1987
1988
					;to t in version 18.57, but not in
					;all older versions of emacs.
	(old-match-data (match-data))
1989
1990
1991
	;; lyskom-filter-old-buffer is also changed when starting to edit
	;; in function lyskom-edit-text.
	(lyskom-filter-old-buffer (current-buffer)))
Per Cederqvist's avatar
.    
Per Cederqvist committed
1992
    (unwind-protect
David Kågedal's avatar
David Kågedal committed
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006