lyskom-rest.el 72.9 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
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
;;;; ================================================================
;;;;                             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.")


;;; ================================================================
;;;             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)
112
113
114
115
116
117
  "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
118
119
120
121
122
123
  "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)
124
			  lyskom-errno)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
125
126
127
128
129
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


;;; ----------------------------------------------------------------
;;; 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"
169
170
171
172
  (car (cdr (assoc command 
		   (if kom-emacs-knows-iso-8859-1
		       lyskom-commands
		     lyskom-swascii-commands)))))
Linus Tolke's avatar
Linus Tolke committed
173

Per Cederqvist's avatar
.  
Per Cederqvist committed
174

Linus Tolke's avatar
Linus Tolke committed
175
(defun lyskom-ok-command (alternative administrator)
176
177
178
179
180
181
  "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
182
183
184
185
186
(defun kom-extended-command ()
  "Read a LysKOM function name and call the function."
  (interactive)
  (let* ((completion-ignore-case t)
	 (alternatives (mapcar (function reverse)
187
188
189
			       (if kom-emacs-knows-iso-8859-1
				   lyskom-commands
				 lyskom-swascii-commands)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
190
	 (name (completing-read (lyskom-get-string 'extended-command)
191
				alternatives 
Linus Tolke's avatar
Linus Tolke committed
192
193
194
195
196
197
198
				;; 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))
199
				t nil))
Per Cederqvist's avatar
.  
Per Cederqvist committed
200
	 (fnc (reverse-assoc (car (all-completions name alternatives)) 
201
202
203
			     (if kom-emacs-knows-iso-8859-1
				 lyskom-commands
			       lyskom-swascii-commands))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
204
205
206
207
208
209
210
211
212
213
    (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
214
  (lyskom-init-parse lyskom-buffer)
Per Cederqvist's avatar
.  
Per Cederqvist committed
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
  (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
236
	(lyskom-next-command))
Per Cederqvist's avatar
.  
Per Cederqvist committed
237
238
    (recenter 0)
    (move-to-window-line -1)
Lars Willför's avatar
Lars Willför committed
239
    (lyskom-set-last-viewed)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
240
241


242
;;; Author: Lars Willf|r
Per Cederqvist's avatar
.  
Per Cederqvist committed
243
244
245
246

(defun kom-next-command ()
  "Run next command or scroll one page."
  (interactive)
Lars Willför's avatar
Lars Willför committed
247
248
249
250
251
  (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
252
253
254
255
256

  
(defun kom-line-next-command ()
  "Run next command or scroll one line."
  (interactive)
Lars Willför's avatar
Lars Willför committed
257
258
259
260
261
  (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
262
263


264
265
;;; Author: Per Cederqvist

Lars Willför's avatar
Lars Willför committed
266
(defun lyskom-next-command ()
267
  "Run next command."
Per Cederqvist's avatar
.  
Per Cederqvist committed
268
  (let ((doing-default-command t))
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
    (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
288
289
290
291
292
293
294
295


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


(defun kom-initial-digit-view ()
  (interactive)
296
  (if (boundp 'unread-command-event)
297
298
      (setq unread-command-event last-command-event)
    (setq unread-command-char last-command-char))
Per Cederqvist's avatar
.  
Per Cederqvist committed
299
300
301
302
303
304
  (call-interactively 'kom-view nil))


(defun kom-view (text-no)
  "View text number TEXT-NO."
  (interactive "P")
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
  (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
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351


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


352
353
;;; Modified to handle filters

Per Cederqvist's avatar
.  
Per Cederqvist committed
354
355
356
(defun kom-view-next-text ()
  "Display next text (from lyskom-reading-list)."
  (interactive)
357
358
359
  (unwind-protect
	(lyskom-start-of-command 'kom-view-next-text)
	(lyskom-tell-internat 'kom-tell-read)
360
361
362
363
364
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
	(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
399

400
;;; Modified to handle filters
Per Cederqvist's avatar
.  
Per Cederqvist committed
401
402
403
404
405
406
407
408
409
410

(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)
411
    (lyskom-view-text text-no t nil (read-info->conf-stat tri) 
412
		      priority nil t))
Per Cederqvist's avatar
.  
Per Cederqvist committed
413
414
415
416
  (lyskom-run 'main 'lyskom-end-of-command))


(defun lyskom-is-read (text-no)
Per Cederqvist's avatar
Per Cederqvist committed
417
  "Remove TEXT-NO from the list of texts to read.
Per Cederqvist's avatar
.  
Per Cederqvist committed
418
Deletes TEXT-NO from lyskom-reading-list and lyskom-to-do-list.
Per Cederqvist's avatar
Per Cederqvist committed
419
420
421
Adds info in lyskom-membership.

This function only modifies the internal state of the client. It does
Per Cederqvist's avatar
Per Cederqvist committed
422
423
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
424
425
  (read-list-delete-text text-no lyskom-reading-list)
  (read-list-delete-text text-no lyskom-to-do-list)
426
  (lyskom-is-read-handler (blocking-do 'get-text-stat text-no))
427
  (setq lyskom-normally-read-texts (cons text-no lyskom-normally-read-texts)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
428
429
430
431
432


(defun lyskom-is-read-handler (text-stat)
  "Update lyskom-membership for all recipients to TEXT-STAT."
  (lyskom-traverse
433
434
435
436
437
438
439
440
441
      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
442
443
444
445
446
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


;;; ================================================================
;;;                        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
491
492
493
  "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
494
495
496
497
498
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
  (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))
525
  (let ((num-unread (length (text-list->texts
Per Cederqvist's avatar
.  
Per Cederqvist committed
526
527
			     (read-info->text-list
			      read-info)))))
528
529
530
531
532
533
534
    (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
535
536
537
538
539
540
  

(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
541
542
543
544
545
546
547
548
549
550
551
552
553
554
      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
555
556
557
558


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

559
560
561
;;; in vars.el:
;(defvar lyskom-sessions-with-unread nil
;  "Global variable. List of lyskom-sessions with unread articles.")
562
563
564
565
566
567
568
;;;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
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584

(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)
585
	(total-unread 0)
586
	(letters 0)
587
	(len 0)
Per Cederqvist's avatar
.  
Per Cederqvist committed
588
589
590
	(read-info-list nil))

    (if (null name)
591
592
593
594
595
596
597
598
	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
599
600
	    ;; This was weird. Someone had begun to write an if, but
	    ;; this was all there was: (if 
601
602
603
604
605
606
607
608
609
610
	    (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))
611
612
613
614
		    (if (= lyskom-pers-no
			   (conf-stat->conf-no 
			    (read-info->conf-stat (car read-info-list))))
			(setq letters len))
615
		    (setq total-unread (+ total-unread len))))
616
	      (setq read-info-list (cdr read-info-list))))))
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
      (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
638
639
640
641
642
643
		  (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
644
		  (cons lyskom-proc lyskom-sessions-with-unread-letters))))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
645
646
647
648
649
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


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

;;; +++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
681
682
683
684
685
686
687
688
689
690
691
(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
692
693
694
695
696
697
698
699
700
701
702
(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
703
704
705
706
707
708
709
710
711
712
713
714
    (if (and win			;Do nothing if no window showed LysKOM.
	     (not (pos-visible-in-window-p (point-max))))
	(progn
	  (goto-char (point-max))
	  (recenter -1)
	  (if (not (pos-visible-in-window-p lyskom-last-viewed))
	      (progn
		(set-window-start win lyskom-last-viewed)
		(move-to-window-line -1)
		(vertical-motion 1)
		(if (not (pos-visible-in-window-p))
		    (forward-char -1))))))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
715
716
717
718
719
720
	

(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.
721
722
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
723
724
725
726
727
  (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
728
  (lyskom-trim-buffer)
Per Cederqvist's avatar
.  
Per Cederqvist committed
729
730
731
732
  (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
733
734
735
736
	  (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
737
738
739
740
741
742


(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."
743
744
745
  (lyskom-do-insert-before-prompt string))

(defun lyskom-do-insert-before-prompt (string)
Per Cederqvist's avatar
.  
Per Cederqvist committed
746
747
  (cond
   ((and lyskom-executing-command
Linus Tolke's avatar
Linus Tolke committed
748
749
	 (not lyskom-is-waiting)
	 (not (eq lyskom-is-waiting t)))
Per Cederqvist's avatar
Per Cederqvist committed
750
751
    ;; Don't insert the string until the current command is finished.
    (if (null lyskom-to-be-printed-before-prompt)
752
	(setq lyskom-to-be-printed-before-prompt (lyskom-queue-create)))
753
754
    (lyskom-queue-enter lyskom-to-be-printed-before-prompt 
			(list string)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
755
756
757
758
759
760
   (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)
761
762
      (let ((buffer-read-only nil)
	    (start (point)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
	(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
783
784
	(message "%s" str)
      (message "%s" (iso-8859-1-to-swascii str)))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
785
786


787
788
789
790
791
(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
792
793
	(error "%s" str)
      (error "%s" (iso-8859-1-to-swascii str)))))
794
795


Lars Willför's avatar
Lars Willför committed
796
797
798
799
800
801
(defun lyskom-set-last-viewed ()
  (save-excursion
    (vertical-motion 0)
    (setq lyskom-last-viewed (point))))


Per Cederqvist's avatar
.  
Per Cederqvist committed
802
803
804
;;; ================================================================
;;;                  Extended string formatting

805
806
807
;;; Author: David Byers
;;; Original code: Inge Wallin

Per Cederqvist's avatar
.  
Per Cederqvist committed
808

809
810
811
(defvar lyskom-format-format
  "%\\(=\\)?\\(-?[0-9]+\\)?\\(#\\([0-9]+\\)\\)?\\(:\\)?\\([][@MmPpnrtsdoxc]\\)"
  "regexp matching format string parts.")
Per Cederqvist's avatar
.  
Per Cederqvist committed
812
813
814
815
816
817
818

(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."
819
820
821
822
823
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
  (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
849
850
        (if (and (boundp 'lyskom-buffer)
		 lyskom-buffer)
David Kågedal's avatar
David Kågedal committed
851
            (set-buffer lyskom-buffer))
852
853
854
855
856
857
858
859
860
861
862
863
864
865
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
990
991
992
993
994
995
996
997
998
999
1000
        (setq state (lyskom-format-aux (make-format-state
                                        fmt
                                        0
                                        argl
                                        "")))))
    (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))
        (signal 'lyskom-internal-error (list 'lyskom-format
                                             ": 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))
                         (t (signal 'lyskom-internal-error
                                    (list 'lyskom-format