lyskom-rest.el 133 KB
Newer Older
David Byers's avatar
David Byers committed
1
;;;;; -*-coding: iso-8859-1;-*-
Linus Tolke Y's avatar
Linus Tolke Y committed
2 3
;;;;;
;;;;; $Id$
4
;;;;; Copyright (C) 1991, 1996  Lysator Academic Computer Association.
Linus Tolke Y's avatar
Linus Tolke Y committed
5 6 7 8 9
;;;;;
;;;;; This file is part of the LysKOM server.
;;;;; 
;;;;; LysKOM is free software; you can redistribute it and/or modify it
;;;;; under the terms of the GNU General Public License as published by 
10
;;;;; the Free Software Foundation; either version 2, or (at your option) 
Linus Tolke Y's avatar
Linus Tolke Y committed
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25
;;;;; any later version.
;;;;; 
;;;;; LysKOM is distributed in the hope that it will be useful, but WITHOUT
;;;;; ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
;;;;; FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
;;;;; for more details.
;;;;; 
;;;;; You should have received a copy of the GNU General Public License
;;;;; along with LysKOM; see the file COPYING.  If not, write to
;;;;; Lysator, c/o ISY, Linkoping University, S-581 83 Linkoping, SWEDEN,
;;;;; or the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, 
;;;;; MA 02139, USA.
;;;;;
;;;;; Please mail bug reports to bug-lyskom@lysator.liu.se. 
;;;;;
Per Cederqvist's avatar
.  
Per Cederqvist committed
26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45
;;;; ================================================================
;;;; ================================================================
;;;;
;;;; File: lyskom-rest.el
;;;;
;;;; This is the rest of what was once the entire source code of the
;;;; client. Now most of the source resides in other files. Eventually
;;;; the functions in here will be distributed out to other files.
;;;; Below follows the original header of the LysKOM elisp client:
;;;;
;;;; ================================================================
;;;;
;;;; Simple LysKOM elisp client.
;;;;
;;;; Originally written by Per Cederqvist.
;;;;
;;;; Heavily hacked by:
;;;;    Thomas Bellman
;;;;    Linus Tolke
;;;;    Inge Wallin
46 47
;;;;    David K}gedal
;;;;    David Byers
Per Cederqvist's avatar
.  
Per Cederqvist committed
48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77
;;;;   and others.
;;;;
;;;; Some ideas stolen from lpmud.el written by Lars Willf|r and Thomas Bellman
;;;;
;;;; Conventions:
;;;;
;;;;    All functions, variables etc follow one of these conventions:
;;;;		lyskom-		general functions.
;;;;		cache-		cache-routines.
;;;;		initiate-	call a service. (Might look up in cache)
;;;;		kom-		user kommands.
;;;;		lyskom-parse-	parse (part of) a reply from the server.
;;;;				these are found in parse.el
;;;;		lyskom-edit-	Things related to the editing of texts.
;;;;		{lyskom,kom}-edit-options-
;;;;				things related to editing options
;;;;				(found in flags.el)
;;;;		{lyskom,kom}-prioritize-
;;;;				things related to the prioritize
;;;;				buffer. The file is prioritize.el
;;;;		{lyskom,kom}-{completing-read,completing,complete}-
;;;;				things related to
;;;;				lyskom-completing-read. Found in
;;;;				completing-read.el 
;;;;		lyskom-*-hook   hooks.
;;;;
;;;;    Three plus-signs (+++) in the code marks a place where more
;;;;    work is needed.
;;;;

78 79 80 81
(eval-when-compile
  (require 'lyskom-command "command")
  (require 'lyskom-menus "menus")
  (require 'lyskom-clienttypes "clienttypes.el"))
David Kågedal's avatar
David Kågedal committed
82 83


84 85 86 87
(setq lyskom-clientversion-long 
      (concat lyskom-clientversion-long
	      "$Id$\n"))

88 89
(lyskom-external-function find-face)

90

Per Cederqvist's avatar
.  
Per Cederqvist committed
91 92 93 94 95 96 97
;;;; ================================================================
;;;;                             New errors.


(put 'lyskom-protocol-error 'error-conditions
     '(error lyskom-error lyskom-protocol-error))
(put 'lyskom-protocol-error 'error-message
98
     "LysKOM protocol error")
Per Cederqvist's avatar
.  
Per Cederqvist committed
99 100 101 102

(put 'lyskom-internal-error 'error-conditions
     '(error lyskom-error lyskom-internal-error))
(put 'lyskom-internal-error 'error-message
103
     "Internal LysKOM error")
Per Cederqvist's avatar
.  
Per Cederqvist committed
104

David Kågedal's avatar
David Kågedal committed
105
(put 'lyskom-format-error 'error-conditions
David Byers's avatar
David Byers committed
106
    '(error lyskom-error lyskom-format-error))
David Kågedal's avatar
David Kågedal committed
107
(put 'lyskom-internal-error 'error-message
108
     "Internal LysKOM format error")
David Kågedal's avatar
David Kågedal committed
109

Per Cederqvist's avatar
.  
Per Cederqvist committed
110

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

(defvar lyskom-unread-mode-line nil)
116
(defvar lyskom-unread-title-format nil)
117

Per Cederqvist's avatar
.  
Per Cederqvist committed
118 119 120 121 122 123 124 125 126 127
;;; ================================================================
;;;             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."
128 129 130 131 132
  (or
   (lyskom-get-string-internal (intern (concat "error-"
					       (number-to-string errno)))
			       'lyskom-error-texts)
   (lyskom-format 'error-not-found errno)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
133

134
(defun lyskom-report-command-answer (answer &optional errno)
Per Cederqvist's avatar
.  
Per Cederqvist committed
135 136 137 138 139
  "Handles a void return from call to the server."
  (if answer 
      (lyskom-insert-string 'done)
    (lyskom-insert-string 'nope)
    (lyskom-format-insert 'error-code
140 141
			  (lyskom-get-error-text (or errno lyskom-errno))
			  (or errno lyskom-errno)))
David Byers's avatar
David Byers committed
142
  answer)
Per Cederqvist's avatar
.  
Per Cederqvist committed
143

144 145 146 147
(defun lyskom-current-error ()
  "Return a string describing the current error"
  (lyskom-format 'error-code (lyskom-get-error-text lyskom-errno) lyskom-errno))

Per Cederqvist's avatar
.  
Per Cederqvist committed
148 149 150 151 152 153

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

(defun lyskom-tell-internat (key)
  "Same as lyskom-tell-server, but use a key to a list of phrases."
David Kågedal's avatar
David Kågedal committed
154 155 156
  ;; The server at Lysator produces a lot of network traffic. The
  ;; solution should to be less verbose. This is very interesting
  ;; anymore, anyway.
Per Cederqvist's avatar
.  
Per Cederqvist committed
157 158 159 160 161 162
  (lyskom-tell-server (lyskom-tell-string key)))



;;; Resume operation after a crash.

David Kågedal's avatar
David Kågedal committed
163 164
(defun kom-recover (&optional refetch)
  "Try to recover from an error.
165 166
If the optional argument REFETCH is non-nil, all caches are cleared and
`lyskom-refetch' is called."
David Kågedal's avatar
David Kågedal committed
167
  (interactive "p")
David Kågedal's avatar
Bugfix  
David Kågedal committed
168
  (lyskom-init-parse lyskom-buffer)
Per Cederqvist's avatar
.  
Per Cederqvist committed
169 170
  (setq lyskom-call-data nil)
  (setq lyskom-pending-calls nil)
David Kågedal's avatar
David Kågedal committed
171 172 173 174 175
  (setq lyskom-output-queues (make-vector 10 nil))
  (let ((i 0))
    (while (< i 10)
      (aset lyskom-output-queues i (lyskom-queue-create))
      (++ i)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
176 177
  (setq lyskom-number-of-pending-calls 0)
  (setq lyskom-is-parsing nil)
178 179 180
  (when refetch
    (clear-all-caches)
    (lyskom-refetch))
Per Cederqvist's avatar
.  
Per Cederqvist committed
181 182 183 184 185 186 187 188 189 190 191 192 193 194 195
  (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
196
	(goto-char (point-max))
Per Cederqvist's avatar
.  
Per Cederqvist committed
197
	(recenter 0)
198
        (sit-for 0)                     ; FIXME: emacs-21.0.94 workaround
Lars Willför's avatar
Lars Willför committed
199
	(lyskom-next-command))
Per Cederqvist's avatar
.  
Per Cederqvist committed
200
    (recenter 0)
201
    (sit-for 0)                     ; FIXME: emacs-21.0.94 workaround
Per Cederqvist's avatar
.  
Per Cederqvist committed
202
    (move-to-window-line -1)
Lars Willför's avatar
Lars Willför committed
203
    (lyskom-set-last-viewed)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
204 205


206
;;; Author: Lars Willf|r
Per Cederqvist's avatar
.  
Per Cederqvist committed
207 208 209 210

(defun kom-next-command ()
  "Run next command or scroll one page."
  (interactive)
Lars Willför's avatar
Lars Willför committed
211 212 213 214
  (if (pos-visible-in-window-p (point-max))
      (lyskom-next-command)
    (move-to-window-line -1)
    (lyskom-set-last-viewed)
215 216
    (lyskom-scroll)
    (if (< (window-start) lyskom-last-viewed)
David Byers's avatar
David Byers committed
217 218 219 220 221 222 223
        (lyskom-xemacs-or-gnu
         (let ((overlay (make-extent 
                         lyskom-last-viewed
                         (save-excursion (goto-char lyskom-last-viewed)
                                         (end-of-line)
                                         (forward-char 1)
                                         (point)))))
224
           (set-extent-priority overlay 1000)
David Byers's avatar
David Byers committed
225 226 227 228 229 230 231 232 233 234 235
           (set-extent-face overlay 'kom-mark-face)
           (add-timeout 2 
                        'delete-extent
                        overlay))
         (let ((overlay (make-overlay 
                         lyskom-last-viewed
                         (save-excursion (goto-char lyskom-last-viewed)
                                         (end-of-line)
                                         (forward-char 1)
                                         (point)))))
           (overlay-put overlay 'face 'kom-mark-face)
236
           (overlay-put overlay 'priority 1000)
David Byers's avatar
David Byers committed
237 238 239
           (run-at-time 2 nil
                        'delete-overlay
                        overlay))))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
240 241 242 243 244

  
(defun kom-line-next-command ()
  "Run next command or scroll one line."
  (interactive)
Lars Willför's avatar
Lars Willför committed
245 246 247 248 249
  (if (pos-visible-in-window-p (point-max))
      (lyskom-next-command)
    (move-to-window-line 1)
    (lyskom-set-last-viewed)
    (lyskom-scroll)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
250 251


252 253
;;; Author: Per Cederqvist

Lars Willför's avatar
Lars Willför committed
254
(defun lyskom-next-command ()
255
  "Run next command."
David Byers's avatar
David Byers committed
256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289
  (let ((saved-buffer (current-buffer)))
    (unwind-protect 
        (progn
          (setq lyskom-doing-default-command t)
          (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 'reedit-text)
            (kom-re-edit-next-text))
           ((eq lyskom-command-to-do 'next-pri-session)
            (kom-go-to-pri-session))
           ((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
               ((or (stringp command)
                    (vectorp command))
                (execute-kbd-macro command))
               ((commandp command) (call-interactively command))
               (t (lyskom-start-of-command nil) (lyskom-end-of-command)))))
           ((eq lyskom-command-to-do 'unknown)
            (lyskom-insert
             (lyskom-get-string 'wait-for-server)))
           (t (signal 'lyskom-internal-error '(kom-next-command)))))
      (condition-case nil
          (save-excursion
            (set-buffer saved-buffer)
            (setq lyskom-doing-default-command nil))
        (error nil)))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
290 291 292 293 294 295 296 297


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


(defun kom-initial-digit-view ()
  (interactive)
298 299
  (setq unread-command-events (cons last-command-event
                                    unread-command-events))
Per Cederqvist's avatar
.  
Per Cederqvist committed
300 301 302 303 304 305
  (call-interactively 'kom-view nil))


(defun kom-view (text-no)
  "View text number TEXT-NO."
  (interactive "P")
306 307 308 309
  (unwind-protect
      (progn
	(let ((kom-page-before-command nil))
	  (lyskom-start-of-command 'kom-view)
310 311
	  (lyskom-tell-internat 'kom-tell-review))
        (let ((current-prefix-arg text-no))
312 313 314
          (setq text-no (lyskom-read-text-no-prefix-arg 'review-text-q)))

        (cond (text-no
315 316 317 318 319
               (when (or (not (listp kom-page-before-command))
                         (memq 'kom-view kom-page-before-command))
                 (recenter 1)
                 (sit-for 0)                     ; FIXME: emacs-21.0.94 workaround
                 )
320 321 322 323
               (lyskom-tell-internat 'kom-tell-review)
               (lyskom-format-insert 'review-text-no text-no)
               (lyskom-view-text text-no))
              (t (lyskom-insert 'confusion-what-to-view))))
324
    (lyskom-end-of-command)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
325 326


David Byers's avatar
David Byers committed
327 328 329 330 331 332 333 334 335 336 337 338 339
;;;; ================================================================
;;;;                          Re-edit text

(def-kom-command kom-re-edit-next-text ()
  "Display a buffer containing a failed submission"
  (interactive)
  (let ((el (read-list->first lyskom-reading-list)))
    (set-read-list-del-first lyskom-reading-list)
    (if (buffer-live-p (read-info->misc el))
        (lyskom-display-buffer (read-info->misc el))
      (lyskom-format-insert 'text-buffer-missing))))


340 341 342 343 344 345 346 347 348 349 350 351 352 353
;;;; ================================================================
;;;;                        Go to pri session

(def-kom-command kom-go-to-pri-session ()
  "Go to a prioritized session with unreads"
  (interactive)
  (let ((session (lyskom-get-prioritized-session)))
    (if (or (null session)
            (eq session (current-buffer))
            (not (buffer-live-p session)))
        (lyskom-insert 'no-such-kom-session)
      (lyskom-switch-to-kom-buffer session))))


Per Cederqvist's avatar
.  
Per Cederqvist committed
354 355 356 357 358 359 360 361 362 363 364 365 366
;;;; ================================================================
;;;;                         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 
367
	 ((member type '(REVIEW REVIEW-TREE REVIEW-MARK))
Per Cederqvist's avatar
.  
Per Cederqvist committed
368
	  (read-list-rotate lyskom-reading-list))
369
	 ((member type '(COMM-IN FOOTN-IN))
Per Cederqvist's avatar
.  
Per Cederqvist committed
370 371 372 373 374 375 376
	  (set-read-list-del-first lyskom-reading-list))
	 (t 
	  (setq finished t))))
      (-- len)))
  (kom-view-next-text))


377 378
;;; Modified to handle filters

David Kågedal's avatar
David Kågedal committed
379
(def-kom-command kom-view-next-text ()
Per Cederqvist's avatar
.  
Per Cederqvist committed
380 381
  "Display next text (from lyskom-reading-list)."
  (interactive)
David Kågedal's avatar
David Kågedal committed
382 383 384 385 386 387 388 389 390
  (lyskom-tell-internat 'kom-tell-read)
  (let ((action 'next-text))
    (while (eq action 'next-text)
      (if (read-list-isempty lyskom-reading-list)
	  (progn
	    (if (/= 0 lyskom-current-conf)
		(lyskom-insert-string 'completely-read-conf)
	      (lyskom-insert-string 'not-in-any-conf))
	    (setq action nil))
391
	      
David Kågedal's avatar
David Kågedal committed
392 393 394 395 396 397 398
	(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))
399
		 (is-review (or (member type '(REVIEW REVIEW-MARK))
David Kågedal's avatar
David Kågedal committed
400 401
				is-review-tree))
		 (mark-as-read (not is-review)))
402 403
	    (when is-review
              (delq text-no (read-info->text-list tri))) ;First entry only
David Kågedal's avatar
David Kågedal committed
404 405 406 407 408 409 410 411 412
	    (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
413
				    (not is-review)
414
				    (member type '(REVIEW REVIEW-MARK))))
David Kågedal's avatar
David Kågedal committed
415 416 417 418
	    (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))))))))
419
  
Per Cederqvist's avatar
.  
Per Cederqvist committed
420

421
;;; Modified to handle filters
Per Cederqvist's avatar
.  
Per Cederqvist committed
422

David Kågedal's avatar
David Kågedal committed
423
;; This is horribly ugly. It acts like a user command, but it isn't.
Per Cederqvist's avatar
.  
Per Cederqvist committed
424
(defun lyskom-view-priority-text ()
David Byers's avatar
David Byers committed
425 426 427
  "Display the first text from the next conference on the lyskom-to-do-list.

Cannot be called from a callback."
Per Cederqvist's avatar
.  
Per Cederqvist committed
428
  (lyskom-start-of-command 'kom-view-next-text)
David Kågedal's avatar
David Kågedal committed
429 430 431 432 433 434 435 436 437 438 439 440
  (unwind-protect
      (progn
	(lyskom-tell-internat 'kom-tell-read)
	(let* ((tri (read-list->first lyskom-to-do-list))
	       (priority (read-info->priority
			  (read-list->first lyskom-reading-list)))
	       (text-no (car (text-list->texts (read-info->text-list tri)))))
	  (lyskom-is-read text-no)
	  (lyskom-view-text text-no t nil (read-info->conf-stat tri) 
			    priority nil t))
	(lyskom-wait-queue 'main))
    (lyskom-end-of-command)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
441 442 443


(defun lyskom-is-read (text-no)
Per Cederqvist's avatar
Per Cederqvist committed
444
  "Remove TEXT-NO from the list of texts to read.
Per Cederqvist's avatar
.  
Per Cederqvist committed
445
Deletes TEXT-NO from lyskom-reading-list and lyskom-to-do-list.
Per Cederqvist's avatar
Per Cederqvist committed
446 447 448
Adds info in lyskom-membership.

This function only modifies the internal state of the client. It does
Per Cederqvist's avatar
Per Cederqvist committed
449 450
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
451 452
  (read-list-delete-text text-no lyskom-reading-list)
  (read-list-delete-text text-no lyskom-to-do-list)
David Byers's avatar
David Byers committed
453
  (initiate-get-text-stat 'main 'lyskom-is-read-handler text-no)
454
  (setq lyskom-normally-read-texts (cons text-no lyskom-normally-read-texts)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
455 456 457 458 459


(defun lyskom-is-read-handler (text-stat)
  "Update lyskom-membership for all recipients to TEXT-STAT."
  (lyskom-traverse
460
      misc (text-stat->misc-info-list text-stat)
461
    (if (member (misc-info->type misc) '(RECPT BCC-RECPT CC-RECPT))
462 463
	(let ((membership (lyskom-try-get-membership
			   (misc-info->recipient-no misc))))
464 465 466 467 468
	  (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
469 470 471 472 473 474


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


475
(def-kom-command kom-go-to-next-conf ()
Per Cederqvist's avatar
.  
Per Cederqvist committed
476 477 478 479 480
  "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)
481 482 483
  (when (lyskom-check-go-to-conf)
    (lyskom-maybe-move-unread t)
    (lyskom-go-to-next-conf)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
484 485 486 487 488 489 490


(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)
491 492 493 494
  (when (lyskom-check-go-to-conf)
    (lyskom-maybe-move-unread nil)
    (lyskom-go-to-next-conf)
    (lyskom-end-of-command)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
495 496 497 498 499 500


(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))
501 502
      (let ((conf-stat (read-info->conf-stat 
                        (read-list->first lyskom-to-do-list))))
503 504 505 506 507 508 509
        (if conf-stat
            (progn (lyskom-set-mode-line conf-stat)
                   (read-list-enter-first
                    (read-list->first lyskom-to-do-list)
                    lyskom-reading-list)
                   (lyskom-enter-conf conf-stat 
                                      (read-list->first lyskom-to-do-list)))
510 511
          (read-list-enter-first
           (read-list->first lyskom-to-do-list)
512
           lyskom-reading-list)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
513
    (lyskom-insert-string 'all-conf-unread-r)
514
    (lyskom-set-mode-line (lyskom-get-string 'all-conf-unread-s))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
515 516


517
(defun lyskom-maybe-move-unread (bury)
Linus Tolke Y's avatar
Linus Tolke Y committed
518
  "Empty the reading list.
519
If the argument BURY is non-nil and there are unread articles left in the
Linus Tolke Y's avatar
Linus Tolke Y committed
520
reading list then the conf is inserted last in the to do list."
Per Cederqvist's avatar
.  
Per Cederqvist committed
521 522
  (if (not (read-list-isempty lyskom-reading-list))
      (progn
523
	(if bury
Per Cederqvist's avatar
.  
Per Cederqvist committed
524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544
	    (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))))


545 546 547 548 549 550 551 552 553 554
(defun lyskom-check-go-to-conf (&optional conf)
  "Check if it is OK to go to conf CONF (a conf-stat).
It is assumed that lyskom-pers-no is a member of the conference.
This function interacts with the buffer and the user.

If CONF is nil, check the first conf on the to-do list."
  (let* ((conf-stat (or conf
                        (read-info->conf-stat 
                         (read-list->first lyskom-to-do-list))))
         (mship (and conf-stat 
David Byers's avatar
David Byers committed
555
                     (lyskom-get-membership (conf-stat->conf-no conf-stat) t)))
556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592
         (type nil)
         (continue t))
    (when (and conf-stat mship)
      (setq type (membership->type mship))

      (when (membership-type->invitation type)
        ;;; State the invitation,give the user a chance to accept it
        ;;; Leave the conf if the user does not want it
        (lyskom-format-insert 'your-invited
                              conf-stat
                              (membership->created-by mship))
        (if (lyskom-j-or-n-p (lyskom-get-string 'accept-invitation))
            (progn
              (set-membership-type->invitation type nil)
              (initiate-set-membership-type 'main
                                            nil
                                            lyskom-pers-no
                                            (conf-stat->conf-no conf-stat)
                                            (membership->type mship))
              (setq continue t))
          (progn
            (lyskom-sub-member (blocking-do 'get-pers-stat lyskom-pers-no)
                               conf-stat)
            (setq continue nil)
            )))

      (when (membership-type->secret type)
        (lyskom-format-insert-before-prompt 'bug-secret-mship conf-stat))

      (when (membership-type->passive type)
        ;;; Offer the user a chance to become an active member
        ;;; If the offer is refused, boot the user off the conference
        (lyskom-format-insert 'enter-passive conf-stat)
        (setq continue nil)
        (if (lyskom-j-or-n-p (lyskom-format 'convert-passive conf-stat))
            (progn
              (set-membership-type->passive type nil)
593 594 595 596 597
              (blocking-do 'set-membership-type
                           lyskom-pers-no
                           (conf-stat->conf-no conf-stat)
                           (membership->type mship))
              (lyskom-fetch-start-of-map conf-stat mship)
598 599 600 601 602 603 604 605
              (setq continue t))
          (progn
            (setq continue nil))))
      )
    
    ;;; Return the result
    continue))

Per Cederqvist's avatar
.  
Per Cederqvist committed
606 607 608 609 610
(defun lyskom-enter-conf (conf-stat read-info)
  "Tell server which conf the user is reading.
Prints the name and amount of unread in the conference we just went to 
according to the value of kom-print-number-of-unread-on-entrance.
Args: CONF-STAT READ-INFO"
David Byers's avatar
David Byers committed
611 612 613
  (lyskom-run-hook-with-args 'lyskom-change-conf-hook
                             lyskom-current-conf
                             (conf-stat->conf-no conf-stat))
614 615
  (unless lyskom-is-anonymous
    (initiate-pepsi 'main nil (conf-stat->conf-no conf-stat)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
616
  (setq lyskom-current-conf (conf-stat->conf-no conf-stat))
617
  (let ((num-unread (text-list->length (read-info->text-list read-info))))
618
    (lyskom-format-insert (if (not kom-print-number-of-unread-on-entrance)
619 620 621 622 623 624
                              'enter-conf
                            (if (= num-unread 1)
                                'one-unread
                              'several-unread))
                          conf-stat
                          num-unread)))  
Per Cederqvist's avatar
.  
Per Cederqvist committed
625

David Byers's avatar
David Byers committed
626 627 628 629 630 631 632
(defun lyskom-leave-current-conf ()
  "Leave the current conference without going to another one."
  (set-read-list-empty lyskom-reading-list)
  (lyskom-run-hook-with-args 'lyskom-change-conf-hook
                             lyskom-current-conf 0)
  (setq lyskom-current-conf 0)
  (initiate-pepsi 'main nil 0))
Per Cederqvist's avatar
.  
Per Cederqvist committed
633 634 635 636


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

637 638 639
;;; in vars.el:
;(defvar lyskom-sessions-with-unread nil
;  "Global variable. List of lyskom-sessions with unread articles.")
640 641 642 643 644 645 646
;;;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
647 648 649 650 651 652 653 654 655 656 657 658 659 660 661

(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 "")))
662
        (conf-no (if (lyskom-conf-stat-p conf) (conf-stat->conf-no conf) 0))
Per Cederqvist's avatar
.  
Per Cederqvist committed
663
	(unread -1)
664
	(total-unread 0)
665
	(letters 0)
666
	(len 0)
Per Cederqvist's avatar
.  
Per Cederqvist committed
667 668
	(read-info-list nil))

669
      ;; Set unread to the number of unread texts in CONF.
David Byers's avatar
David Byers committed
670
    (setq read-info-list (read-list->all-entries lyskom-to-do-list))
671

David Byers's avatar
David Byers committed
672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688
    ;; This was weird. Someone had begun to write an if, but
    ;; this was all there was: (if 
    (while read-info-list
      (if (read-info->conf-stat (car read-info-list))
          (progn
            (setq len (text-list->length
                       (read-info->text-list (car read-info-list))))
            (if (= conf-no
                   (conf-stat->conf-no 
                    (read-info->conf-stat (car read-info-list))))
                (setq unread len))
            (if (= lyskom-pers-no
                   (conf-stat->conf-no 
                    (read-info->conf-stat (car read-info-list))))
                (setq letters len))
            (setq total-unread (+ total-unread len))))
      (setq read-info-list (cdr read-info-list)))
689 690
      (if (= unread -1)
	  (setq unread 0))
David Kågedal's avatar
David Kågedal committed
691
      
692 693 694
      (if (null name)
	  nil
	(setq mode-line-conf-name 
David Kågedal's avatar
David Kågedal committed
695 696
	      (substring (concat
			  (if (lyskom-conf-stat-p conf)
697 698
			      (if (not (eq lyskom-session-priority 
                                           kom-default-session-priority))
David Kågedal's avatar
David Kågedal committed
699 700 701 702 703 704 705
				  (format "(%d/%d:%d) "
					  unread total-unread
					  lyskom-session-priority)
				(format "(%d/%d) " unread total-unread))
			    "")
			  name
			  (make-string 27 ? ))
706
			 0 27)))
David Kågedal's avatar
David Kågedal committed
707
      
708
      (if (zerop total-unread)
709 710
          (lyskom-remove-unread-buffer lyskom-buffer)
        (lyskom-add-unread-buffer lyskom-buffer))
711
      (if (zerop letters)
712 713
          (lyskom-remove-unread-buffer lyskom-buffer t)
        (lyskom-add-unread-buffer lyskom-buffer t))
David Kågedal's avatar
David Kågedal committed
714
    (force-mode-line-update)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
715 716 717 718 719 720


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

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

David Byers's avatar
David Byers committed
721
(defun lyskom-try-get-membership (conf-no &optional want-passive)
Per Cederqvist's avatar
.  
Per Cederqvist committed
722
  "Returns non-nil if conference CONF-NO is present on lyskom-membership.
723 724 725 726 727
The value is actually the membership for the conference.

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

David Byers's avatar
David Byers committed
728 729 730
This function does not use blocking-do.

Optional argument mship-list is the membership list to look in."
David Byers's avatar
David Byers committed
731 732 733 734 735 736 737 738 739 740 741 742 743
  (save-excursion
    (set-buffer lyskom-buffer)
    (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)))
      (if (and found
               (or want-passive
                   (not (membership-type->passive (membership->type found)))))
          found
        nil))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
744

David Byers's avatar
David Byers committed
745
(defun lyskom-get-membership (conf-no &optional want-passive)
746 747 748 749
  "Get the membership for CONF-NO, or nil if the user is not a member of
CONF-NO.

If the membership list is not fully prefetched and the membership can't be
750
found in lyskom-membership, a blocking call to the server is made."
David Byers's avatar
David Byers committed
751 752 753 754 755 756 757 758 759 760 761 762 763 764
  (save-excursion
    (set-buffer lyskom-buffer)
    (or (lyskom-try-get-membership conf-no want-passive)
        (and (not (lyskom-membership-is-read))
             (let ((membership
                    (blocking-do 'query-read-texts lyskom-pers-no conf-no)))
               (if (and membership (lyskom-visible-membership membership))
                   (lyskom-add-membership membership conf-no))
               (if (and membership
                        (or want-passive
                            (not (membership-type->passive
                                  (membership->type membership)))))
                   membership
                 nil))))))
765 766


Per Cederqvist's avatar
.  
Per Cederqvist committed
767 768 769
;;;; ================================================================
;;;;                   Scrolling and text insertion.

770

771
(defvar lyskom-trim-buffer-delete-to)
Per Cederqvist's avatar
.  
Per Cederqvist committed
772

David Kågedal's avatar
David Kågedal committed
773
(defun lyskom-trim-buffer ()
774 775
  "Trim the size of a lyskom buffer to lyskom-max-buffer-size
returns t if it trimmed the buffer, nil otherwise."
776
  (when (and kom-max-buffer-size
777
	     (> (- (buffer-size) kom-trim-buffer-minimum) kom-max-buffer-size))
778 779 780 781 782 783 784 785 786
    (lyskom-save-excursion
      (let ((lyskom-trim-buffer-delete-to (- (buffer-size)
					     kom-max-buffer-size))
	    (inhibit-read-only t))
	(goto-char (point-min))
	(while (< (point) lyskom-trim-buffer-delete-to)
	  (forward-line 1))
	(setq lyskom-trim-buffer-delete-to (point))
	(run-hooks 'lyskom-trim-buffer-hook)
787 788
	(delete-region (point-min) lyskom-trim-buffer-delete-to)
	(setq lyskom-last-viewed
789
	      (- lyskom-last-viewed -1 lyskom-trim-buffer-delete-to))))
790
      t))
791 792 793 794 795 796 797 798 799

(defun lyskom-garb-lyskom-buffer-to-file ()
  "Appends the deleted initial portions of the buffer to a file.
Put this function in your lyskom-trim-buffer-hook and set
kom-max-buffer-size to something clever, and the trimmed text
will automagically flow into your lyskom log file."
  (append-to-file 1 lyskom-trim-buffer-delete-to
		  (expand-file-name (concat "~/" (buffer-name) "-history"))))

David Kågedal's avatar
David Kågedal committed
800

Per Cederqvist's avatar
.  
Per Cederqvist committed
801 802 803 804 805 806 807 808 809 810 811
(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
812 813 814 815 816 817 818 819 820 821
    (if (and win			;Do nothing if no window showed LysKOM.
	     (not (pos-visible-in-window-p (point-max))))
	(progn
	  (goto-char (point-max))
	  (recenter -1)
	  (if (not (pos-visible-in-window-p lyskom-last-viewed))
	      (progn
		(set-window-start win lyskom-last-viewed)
		(move-to-window-line -1)
		(vertical-motion 1)
David Byers's avatar
David Byers committed
822 823 824 825 826 827 828 829
		(when (not (pos-visible-in-window-p))
		    (forward-char -1)
                    (when (> (current-column)
                             (window-width))
                      (backward-char (+ (- (current-column)
                                            (window-width))
                                        2)))
                    )))))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
830
	
David Byers's avatar
David Byers committed
831 832 833 834 835 836 837 838 839 840 841
;;;
;;; Thanks to the stupid danish fool who wrote the widget package, we
;;; have to do it this way, because w3 uses widgets, and because
;;; widgets use overlays, and because overlays aren't copied between
;;; buffers. If the idiot danish flaming asshole had used text
;;; properties or something equally sensible instead, we could have
;;; managed without this shit.
;;;
;;; (Me, upset? Why would you think *that*?)
;;;

Per Cederqvist's avatar
.  
Per Cederqvist committed
842

843
(defun lyskom-do-insert (string)
David Byers's avatar
David Byers committed
844
  (let ((start (point)))
845
    (insert string)
846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861
    (condition-case var
        (let ((bounds (next-text-property-bounds 1 (max (point-min) (1- start))
                                                 'special-insert))
              (next (make-marker))
              (fn nil))
          (while bounds
            (set-marker next (cdr bounds))
            (setq fn (get-text-property (car bounds) 'special-insert))
            (remove-text-properties (car bounds) (cdr bounds)
                                    '(special-insert))
            (condition-case val
                (funcall fn (car bounds) (cdr bounds))
              (error (apply 'message "%S" val)))
            (setq start next)
            (setq bounds (next-text-property-bounds 1 start
                                                    'special-insert))))
862
      (error (lyskom-ignore var)))))
863

David Byers's avatar
David Byers committed
864 865


Per Cederqvist's avatar
.  
Per Cederqvist committed
866 867
(defun lyskom-insert (string)
  "Insert STRING last in current buffer.
868 869 870
Leaves the point at the end of the buffer if possible without
scrolling past lyskom-last-viewed (generally the most recent prompt.)
Leaves the point at the end of the window if not possible. If buffer
871
is not on screen then doesn't move point."
872
  (when (symbolp string) (setq string (lyskom-get-string string)))
David Kågedal's avatar
David Kågedal committed
873 874 875
  (let ((was-at-max (= (save-excursion (end-of-line) (point)) (point-max))))
    (save-excursion
      (goto-char (point-max))
876
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
877
        (lyskom-do-insert string))
David Kågedal's avatar
David Kågedal committed
878 879 880 881
      (lyskom-trim-buffer))
    (let ((window (get-buffer-window (current-buffer))))
      (if (and window was-at-max)
	  (if (pos-visible-in-window-p (point-max) window)
882 883
              (goto-char (point-max))
            (and kom-continuous-scrolling (lyskom-scroll)))))))
884

Per Cederqvist's avatar
.  
Per Cederqvist committed
885

David Byers's avatar
David Byers committed
886

887
(defun lyskom-insert-at-point (string)
888
  "Insert STRING in the current buffer at point."
889
  (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
890
    (lyskom-do-insert string))
891 892
  (lyskom-trim-buffer))  

Per Cederqvist's avatar
.  
Per Cederqvist committed
893 894 895 896

(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.
897
The strings buffered are printed before the prompt by lyskom-update-prompt."
898 899 900 901 902 903 904 905 906 907 908 909
  ;;
  ;; This is the policy for moving point:
  ;;
  ;; old-point-max is the point-max before the text is inserted
  ;; new-point-max is the point-max after the text is inserted
  ;;
  ;; If point /= old-point-max, leave the point where it is, and don't
  ;; scroll the window.
  ;;
  ;; If point = old-point-max, set it to new-point-max, and if the
  ;; buffer is in a window, make sure that point is visible.
  ;;
Per Cederqvist's avatar
.  
Per Cederqvist committed
910 911
  (cond
   ((and lyskom-executing-command
912
         (not (eq lyskom-is-waiting t)))
Per Cederqvist's avatar
Per Cederqvist committed
913 914
    ;; Don't insert the string until the current command is finished.
    (if (null lyskom-to-be-printed-before-prompt)
915
        (setq lyskom-to-be-printed-before-prompt (lyskom-queue-create)))
916
    (lyskom-queue-enter lyskom-to-be-printed-before-prompt 
917
                        (list string)))
918
   (t
919 920
    ;; For some reaseon save-excursion doesn't work as expected
    (let ((oldpoint (point-marker)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
921
      (goto-char (point-max))
922 923
      (beginning-of-line)
      (let ((inhibit-read-only t))
David Byers's avatar
David Byers committed
924
	(lyskom-do-insert string))
925
      (goto-char oldpoint))
926 927 928 929
    (let ((window (get-buffer-window (current-buffer))))
      (if (and window
	       (not (pos-visible-in-window-p (point) window)))
	  ;; This mease that the prompt has been pushed off the bottom
930 931 932
	  (save-selected-window
	    (select-window window)
	    (recenter -1)))))))
933
      
Per Cederqvist's avatar
.  
Per Cederqvist committed
934 935 936 937 938

(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)))
939
    (message "%s" str)))
Per Cederqvist's avatar
.  
Per Cederqvist committed
940 941


942 943 944 945
(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)))
946
    (error "%s" str)))
947 948


Lars Willför's avatar
Lars Willför committed
949 950 951 952 953 954
(defun lyskom-set-last-viewed ()
  (save-excursion
    (vertical-motion 0)
    (setq lyskom-last-viewed (point))))


Per Cederqvist's avatar
.  
Per Cederqvist committed
955 956 957
;;; ================================================================
;;;                  Extended string formatting

958 959 960
;;; Author: David Byers
;;; Original code: Inge Wallin

Per Cederqvist's avatar
.  
Per Cederqvist committed
961

962
(defvar lyskom-format-format
David Byers's avatar
David Byers committed
963
  "%\\(=\\)?\\(-?[0-9]+\\)?\\(#\\([0-9]+\\)\\)?\\(:\\)?\\(&\\)?\\([][@MmPpnrtsdoxcCSDF?]\\)"
964
  "regexp matching format string parts.")
Per Cederqvist's avatar
.  
Per Cederqvist committed
965 966 967

(defun lyskom-insert-string (atom)
 "Find the string corresponding to ATOM and insert it into the LysKOM buffer." 
David Byers's avatar
David Byers committed
968 969 970
 (if (stringp atom)
     (lyskom-insert atom)
   (lyskom-insert (lyskom-get-string atom))))
Per Cederqvist's avatar
.  
Per Cederqvist committed
971

972
(defun lyskom-format (format-string &rest argl)
973
  (format-state->result (lyskom-do-format format-string argl)))
974 975

(defun lyskom-format-insert (format-string &rest argl)
976 977
  "Format and insert a string according to FORMAT-STRING.
The string is inserted at the end of the buffer with `lyskom-insert'."
978
  (let* ((state (lyskom-do-format format-string argl t))
David Kågedal's avatar
David Kågedal committed
979 980 981
	 ;; We have to use a marker, because lyskom-insert may trim
	 ;; the buffer size.
	 (start (point-max-marker))
982
	 (deferred (format-state->delayed-content state)))
983
    (lyskom-insert (format-state->result state))
984 985 986 987 988 989
    (while deferred
      (let ((defer-info (car deferred))
	    (m (make-marker)))
	(set-marker m (+ start (defer-info->pos defer-info)))
	(set-defer-info->pos defer-info m)			     
	(lyskom-defer-insertion defer-info)
David Kågedal's avatar
David Kågedal committed
990 991
	(setq deferred (cdr deferred))))
    (set-marker start nil)))
992

993 994 995 996 997
(defun lyskom-format-insert-at-point (format-string &rest argl)
  "Format and insert a string according to FORMAT-STRING.
The string is inserted at point."
  (let* ((state (lyskom-do-format format-string argl t))
	 (start (point))
998
	 (deferred (format-state->delayed-content state)))
999
    (lyskom-insert-at-point (format-state->result state))
1000 1001 1002 1003 1004 1005 1006
    (while deferred
      (let ((defer-info (car deferred))
	    (m (make-marker)))
	(set-marker m (+ start (defer-info->pos defer-info)))
	(set-defer-info->pos defer-info m)			     
	(lyskom-defer-insertion defer-info)
	(setq deferred (cdr deferred))))))
1007

1008
(defun lyskom-format-insert-before-prompt (format-string &rest argl)
David Kågedal's avatar
David Kågedal committed
1009 1010 1011 1012 1013 1014 1015 1016
  "Format and insert a string according to FORMAT-STRING.
The string is inserted just before the prompt, and if the prompt is not
currently visible the text is queued to be inserted when the prompt
reappears.

Note that it is not allowed to use deferred insertions in the text."
  (lyskom-insert-before-prompt
   (format-state->result (lyskom-do-format format-string argl))))
1017 1018


David Kågedal's avatar
David Kågedal committed
1019
(defun lyskom-do-format (format-string &optional argl allow-defer)
1020
  "Do the actual formatting and return the resulting format-state."
1021 1022 1023 1024 1025 1026 1027 1028
  (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
1029 1030
        (if (and (boundp 'lyskom-buffer)
		 lyskom-buffer)
David Kågedal's avatar
David Kågedal committed
1031
            (set-buffer lyskom-buffer))
David Kågedal's avatar
David Kågedal committed
1032 1033 1034 1035 1036
	(condition-case error
	    (setq state (lyskom-format-aux (make-format-state
					    fmt
					    0
					    argl
1037
					    "")
David Kågedal's avatar
David Kågedal committed
1038
					   allow-defer))
David Kågedal's avatar
David Kågedal committed
1039 1040 1041
	  (lyskom-format-error
	   (error "LysKOM internal error formatting %s: %s%s"
		  format-string (nth 1 error) (nth 2 error))))))
1042
    state))
1043 1044 1045



David Byers's avatar
David Byers committed
1046 1047 1048 1049 1050
;;;
;;; If you add a format letter, for goodness' sake, don't forget to
;;; att it to the regexp above too!
;;;

1051 1052


David Kågedal's avatar
David Kågedal committed
1053
(defun lyskom-format-aux (format-state allow-defer)
1054 1055 1056 1057 1058 1059
  (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)
1060
        (face-flag nil)
1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103
        (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)
1104 1105 1106 1107 1108 1109 1110
	      pad-length (if (match-beginning 2)
			     (string-to-int (substring 
					     (format-state->format-string
					      format-state)
					     (match-beginning 2)
					     (match-end 2)))
			   nil)
1111
	      arg-no (if (match-beginning 4)
1112 1113 1114 1115 1116
			 (string-to-int (substring (format-state->format-string
						    format-state)
						   (match-beginning 4)
						   (match-end 4)))
		       nil)