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[bpt/emacs.git] / lisp / gnus / gnus-start.el
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1;;; gnus-start.el --- startup functions for Gnus
2;; Copyright (C) 1996,97 Free Software Foundation, Inc.
3
4;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
5;; Keywords: news
6
7;; This file is part of GNU Emacs.
8
9;; GNU Emacs is free software; you can redistribute it and/or modify
10;; it under the terms of the GNU General Public License as published by
11;; the Free Software Foundation; either version 2, or (at your option)
12;; any later version.
13
14;; GNU Emacs is distributed in the hope that it will be useful,
15;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17;; GNU General Public License for more details.
18
19;; You should have received a copy of the GNU General Public License
20;; along with GNU Emacs; see the file COPYING. If not, write to the
21;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22;; Boston, MA 02111-1307, USA.
23
24;;; Commentary:
25
26;;; Code:
27
28(require 'gnus)
29(require 'gnus-win)
30(require 'gnus-int)
31(require 'gnus-spec)
32(require 'gnus-range)
33(require 'gnus-util)
34(require 'message)
cb75201b 35(eval-when-compile (require 'cl))
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36
37(defcustom gnus-startup-file (nnheader-concat gnus-home-directory ".newsrc")
38 "Your `.newsrc' file.
39`.newsrc-SERVER' will be used instead if that exists."
40 :group 'gnus-start
41 :type 'file)
42
43(defcustom gnus-init-file (nnheader-concat gnus-home-directory ".gnus")
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44 "Your Gnus Emacs-Lisp startup file name.
45If a file with the `.el' or `.elc' suffixes exists, it will be read instead."
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46 :group 'gnus-start
47 :type 'file)
48
49(defcustom gnus-site-init-file
cb75201b 50 (condition-case nil
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51 (concat (file-name-directory
52 (directory-file-name installation-directory))
53 "site-lisp/gnus-init")
cb75201b 54 (error nil))
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55 "The site-wide Gnus Emacs-Lisp startup file name, or nil if none.
56If a file with the `.el' or `.elc' suffixes exists, it will be read instead."
eec82323 57 :group 'gnus-start
83be5c8c 58 :type '(choice file (const nil)))
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59
60(defcustom gnus-default-subscribed-newsgroups nil
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61 "List of newsgroups to subscribe, when a user runs Gnus the first time.
62The value should be a list of strings.
63If it is t, Gnus will not do anything special the first time it is
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64started; it'll just use the normal newsgroups subscription methods."
65 :group 'gnus-start
83be5c8c 66 :type '(choice (repeat string) (const :tag "Nothing special" t)))
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67
68(defcustom gnus-use-dribble-file t
69 "*Non-nil means that Gnus will use a dribble file to store user updates.
70If Emacs should crash without saving the .newsrc files, complete
71information can be restored from the dribble file."
72 :group 'gnus-dribble-file
73 :type 'boolean)
74
75(defcustom gnus-dribble-directory nil
76 "*The directory where dribble files will be saved.
77If this variable is nil, the directory where the .newsrc files are
78saved will be used."
79 :group 'gnus-dribble-file
80 :type '(choice directory (const nil)))
81
a8151ef7 82(defcustom gnus-check-new-newsgroups 'ask-server
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83 "*Non-nil means that Gnus will run gnus-find-new-newsgroups at startup.
84This normally finds new newsgroups by comparing the active groups the
85servers have already reported with those Gnus already knows, either alive
86or killed.
87
88When any of the following are true, gnus-find-new-newsgroups will instead
89ask the servers (primary, secondary, and archive servers) to list new
90groups since the last time it checked:
91 1. This variable is `ask-server'.
92 2. This variable is a list of select methods (see below).
93 3. `gnus-read-active-file' is nil or `some'.
94 4. A prefix argument is given to gnus-find-new-newsgroups interactively.
95
96Thus, if this variable is `ask-server' or a list of select methods or
97`gnus-read-active-file' is nil or `some', then the killed list is no
98longer necessary, so you could safely set `gnus-save-killed-list' to nil.
99
100This variable can be a list of select methods which Gnus will query with
101the `ask-server' method in addition to the primary, secondary, and archive
102servers.
103
104Eg.
105 (setq gnus-check-new-newsgroups
106 '((nntp \"some.server\") (nntp \"other.server\")))
107
108If this variable is nil, then you have to tell Gnus explicitly to
109check for new newsgroups with \\<gnus-group-mode-map>\\[gnus-find-new-newsgroups]."
110 :group 'gnus-start
111 :type '(choice (const :tag "no" nil)
112 (const :tag "by brute force" t)
113 (const :tag "ask servers" ask-server)
114 (repeat :menu-tag "ask additional servers"
115 :tag "ask additional servers"
116 :value ((nntp ""))
117 (sexp :format "%v"))))
118
119(defcustom gnus-check-bogus-newsgroups nil
120 "*Non-nil means that Gnus will check and remove bogus newsgroup at startup.
121If this variable is nil, then you have to tell Gnus explicitly to
122check for bogus newsgroups with \\<gnus-group-mode-map>\\[gnus-group-check-bogus-groups]."
123 :group 'gnus-start-server
124 :type 'boolean)
125
a8151ef7 126(defcustom gnus-read-active-file 'some
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127 "*Non-nil means that Gnus will read the entire active file at startup.
128If this variable is nil, Gnus will only know about the groups in your
129`.newsrc' file.
130
131If this variable is `some', Gnus will try to only read the relevant
132parts of the active file from the server. Not all servers support
133this, and it might be quite slow with other servers, but this should
134generally be faster than both the t and nil value.
135
136If you set this variable to nil or `some', you probably still want to
137be told about new newsgroups that arrive. To do that, set
138`gnus-check-new-newsgroups' to `ask-server'. This may not work
139properly with all servers."
140 :group 'gnus-start-server
141 :type '(choice (const nil)
142 (const some)
143 (const t)))
144
145(defcustom gnus-level-subscribed 5
146 "*Groups with levels less than or equal to this variable are subscribed."
147 :group 'gnus-group-levels
148 :type 'integer)
149
150(defcustom gnus-level-unsubscribed 7
151 "*Groups with levels less than or equal to this variable are unsubscribed.
152Groups with levels less than `gnus-level-subscribed', which should be
153less than this variable, are subscribed."
154 :group 'gnus-group-levels
155 :type 'integer)
156
157(defcustom gnus-level-zombie 8
158 "*Groups with this level are zombie groups."
159 :group 'gnus-group-levels
160 :type 'integer)
161
162(defcustom gnus-level-killed 9
163 "*Groups with this level are killed."
164 :group 'gnus-group-levels
165 :type 'integer)
166
167(defcustom gnus-level-default-subscribed 3
168 "*New subscribed groups will be subscribed at this level."
169 :group 'gnus-group-levels
170 :type 'integer)
171
172(defcustom gnus-level-default-unsubscribed 6
173 "*New unsubscribed groups will be unsubscribed at this level."
174 :group 'gnus-group-levels
175 :type 'integer)
176
177(defcustom gnus-activate-level (1+ gnus-level-subscribed)
178 "*Groups higher than this level won't be activated on startup.
179Setting this variable to something low might save lots of time when
180you have many groups that you aren't interested in."
181 :group 'gnus-group-levels
182 :type 'integer)
183
184(defcustom gnus-activate-foreign-newsgroups 4
185 "*If nil, Gnus will not check foreign newsgroups at startup.
186If it is non-nil, it should be a number between one and nine. Foreign
187newsgroups that have a level lower or equal to this number will be
188activated on startup. For instance, if you want to active all
189subscribed newsgroups, but not the rest, you'd set this variable to
190`gnus-level-subscribed'.
191
192If you subscribe to lots of newsgroups from different servers, startup
193might take a while. By setting this variable to nil, you'll save time,
194but you won't be told how many unread articles there are in the
195groups."
196 :group 'gnus-group-levels
197 :type 'integer)
198
199(defcustom gnus-save-newsrc-file t
200 "*Non-nil means that Gnus will save the `.newsrc' file.
201Gnus always saves its own startup file, which is called
202\".newsrc.eld\". The file called \".newsrc\" is in a format that can
203be readily understood by other newsreaders. If you don't plan on
204using other newsreaders, set this variable to nil to save some time on
205exit."
206 :group 'gnus-newsrc
207 :type 'boolean)
208
209(defcustom gnus-save-killed-list t
210 "*If non-nil, save the list of killed groups to the startup file.
211If you set this variable to nil, you'll save both time (when starting
212and quitting) and space (both memory and disk), but it will also mean
213that Gnus has no record of which groups are new and which are old, so
214the automatic new newsgroups subscription methods become meaningless.
215
216You should always set `gnus-check-new-newsgroups' to `ask-server' or
217nil if you set this variable to nil.
218
219This variable can also be a regexp. In that case, all groups that do
220not match this regexp will be removed before saving the list."
221 :group 'gnus-newsrc
222 :type 'boolean)
223
224(defcustom gnus-ignored-newsgroups
225 (purecopy (mapconcat 'identity
226 '("^to\\." ; not "real" groups
227 "^[0-9. \t]+ " ; all digits in name
228 "[][\"#'()]" ; bogus characters
229 )
230 "\\|"))
231 "A regexp to match uninteresting newsgroups in the active file.
232Any lines in the active file matching this regular expression are
233removed from the newsgroup list before anything else is done to it,
234thus making them effectively non-existent."
235 :group 'gnus-group-new
236 :type 'regexp)
237
238(defcustom gnus-subscribe-newsgroup-method 'gnus-subscribe-zombies
239 "*Function called with a group name when new group is detected.
240A few pre-made functions are supplied: `gnus-subscribe-randomly'
241inserts new groups at the beginning of the list of groups;
242`gnus-subscribe-alphabetically' inserts new groups in strict
243alphabetic order; `gnus-subscribe-hierarchically' inserts new groups
244in hierarchical newsgroup order; `gnus-subscribe-interactively' asks
245for your decision; `gnus-subscribe-killed' kills all new groups;
246`gnus-subscribe-zombies' will make all new groups into zombies."
247 :group 'gnus-group-new
248 :type '(radio (function-item gnus-subscribe-randomly)
249 (function-item gnus-subscribe-alphabetically)
250 (function-item gnus-subscribe-hierarchically)
251 (function-item gnus-subscribe-interactively)
252 (function-item gnus-subscribe-killed)
253 (function-item gnus-subscribe-zombies)
254 function))
255
256;; Suggested by a bug report by Hallvard B Furuseth.
257;; <h.b.furuseth@usit.uio.no>.
258(defcustom gnus-subscribe-options-newsgroup-method
259 'gnus-subscribe-alphabetically
260 "*This function is called to subscribe newsgroups mentioned on \"options -n\" lines.
261If, for instance, you want to subscribe to all newsgroups in the
262\"no\" and \"alt\" hierarchies, you'd put the following in your
263.newsrc file:
264
265options -n no.all alt.all
266
267Gnus will the subscribe all new newsgroups in these hierarchies with
268the subscription method in this variable."
269 :group 'gnus-group-new
270 :type '(radio (function-item gnus-subscribe-randomly)
271 (function-item gnus-subscribe-alphabetically)
272 (function-item gnus-subscribe-hierarchically)
273 (function-item gnus-subscribe-interactively)
274 (function-item gnus-subscribe-killed)
275 (function-item gnus-subscribe-zombies)
276 function))
277
278(defcustom gnus-subscribe-hierarchical-interactive nil
279 "*If non-nil, Gnus will offer to subscribe hierarchically.
280When a new hierarchy appears, Gnus will ask the user:
281
282'alt.binaries': Do you want to subscribe to this hierarchy? ([d]ys):
283
284If the user pressed `d', Gnus will descend the hierarchy, `y' will
285subscribe to all newsgroups in the hierarchy and `s' will skip this
286hierarchy in its entirety."
287 :group 'gnus-group-new
288 :type 'boolean)
289
290(defcustom gnus-auto-subscribed-groups
291 "^nnml\\|^nnfolder\\|^nnmbox\\|^nnmh\\|^nnbabyl"
292 "*All new groups that match this regexp will be subscribed automatically.
293Note that this variable only deals with new groups. It has no effect
294whatsoever on old groups.
295
296New groups that match this regexp will not be handled by
297`gnus-subscribe-newsgroup-method'. Instead, they will
298be subscribed using `gnus-subscribe-options-newsgroup-method'."
299 :group 'gnus-group-new
300 :type 'regexp)
301
302(defcustom gnus-options-subscribe nil
303 "*All new groups matching this regexp will be subscribed unconditionally.
304Note that this variable deals only with new newsgroups. This variable
305does not affect old newsgroups.
306
307New groups that match this regexp will not be handled by
308`gnus-subscribe-newsgroup-method'. Instead, they will
309be subscribed using `gnus-subscribe-options-newsgroup-method'."
310 :group 'gnus-group-new
311 :type '(choice regexp
312 (const :tag "none" nil)))
313
314(defcustom gnus-options-not-subscribe nil
315 "*All new groups matching this regexp will be ignored.
316Note that this variable deals only with new newsgroups. This variable
317does not affect old (already subscribed) newsgroups."
318 :group 'gnus-group-new
319 :type '(choice regexp
320 (const :tag "none" nil)))
321
322(defcustom gnus-modtime-botch nil
323 "*Non-nil means .newsrc should be deleted prior to save.
324Its use is due to the bogus appearance that .newsrc was modified on
325disc."
326 :group 'gnus-newsrc
327 :type 'boolean)
328
329(defcustom gnus-check-bogus-groups-hook nil
330 "A hook run after removing bogus groups."
331 :group 'gnus-start-server
332 :type 'hook)
333
334(defcustom gnus-startup-hook nil
335 "A hook called at startup.
336This hook is called after Gnus is connected to the NNTP server."
337 :group 'gnus-start
338 :type 'hook)
339
340(defcustom gnus-started-hook nil
341 "A hook called as the last thing after startup."
342 :group 'gnus-start
343 :type 'hook)
344
345(defcustom gnus-get-new-news-hook nil
346 "A hook run just before Gnus checks for new news."
347 :group 'gnus-group-new
348 :type 'hook)
349
350(defcustom gnus-after-getting-new-news-hook
351 (when (gnus-boundp 'display-time-timer)
352 '(display-time-event-handler))
353 "A hook run after Gnus checks for new news."
354 :group 'gnus-group-new
355 :type 'hook)
356
357(defcustom gnus-save-newsrc-hook nil
358 "A hook called before saving any of the newsrc files."
359 :group 'gnus-newsrc
360 :type 'hook)
361
362(defcustom gnus-save-quick-newsrc-hook nil
363 "A hook called just before saving the quick newsrc file.
364Can be used to turn version control on or off."
365 :group 'gnus-newsrc
366 :type 'hook)
367
368(defcustom gnus-save-standard-newsrc-hook nil
369 "A hook called just before saving the standard newsrc file.
370Can be used to turn version control on or off."
371 :group 'gnus-newsrc
372 :type 'hook)
373
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374(defvar gnus-startup-file-coding-system 'binary
375 "*Coding system for startup file.")
376
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377;;; Internal variables
378
379(defvar gnus-newsrc-file-version nil)
380(defvar gnus-override-subscribe-method nil)
381(defvar gnus-dribble-buffer nil)
382(defvar gnus-newsrc-options nil
383 "Options line in the .newsrc file.")
384
385(defvar gnus-newsrc-options-n nil
386 "List of regexps representing groups to be subscribed/ignored unconditionally.")
387
388(defvar gnus-newsrc-last-checked-date nil
389 "Date Gnus last asked server for new newsgroups.")
390
391(defvar gnus-current-startup-file nil
392 "Startup file for the current host.")
393
394;; Byte-compiler warning.
395(defvar gnus-group-line-format)
396
397;; Suggested by Brian Edmonds <edmonds@cs.ubc.ca>.
398(defvar gnus-init-inhibit nil)
399(defun gnus-read-init-file (&optional inhibit-next)
400 ;; Don't load .gnus if the -q option was used.
401 (when init-file-user
402 (if gnus-init-inhibit
403 (setq gnus-init-inhibit nil)
404 (setq gnus-init-inhibit inhibit-next)
405 (let ((files (list gnus-site-init-file gnus-init-file))
406 file)
407 (while files
408 (and (setq file (pop files))
409 (or (and (file-exists-p file)
410 ;; Don't try to load a directory.
411 (not (file-directory-p file)))
412 (file-exists-p (concat file ".el"))
413 (file-exists-p (concat file ".elc")))
414 (condition-case var
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415 (let ((coding-system-for-read
416 gnus-startup-file-coding-system))
417 (load file nil t))
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418 (error
419 (error "Error in %s: %s" file var)))))))))
420
421;; For subscribing new newsgroup
422
423(defun gnus-subscribe-hierarchical-interactive (groups)
424 (let ((groups (sort groups 'string<))
425 prefixes prefix start ans group starts)
426 (while groups
427 (setq prefixes (list "^"))
428 (while (and groups prefixes)
429 (while (not (string-match (car prefixes) (car groups)))
430 (setq prefixes (cdr prefixes)))
431 (setq prefix (car prefixes))
432 (setq start (1- (length prefix)))
433 (if (and (string-match "[^\\.]\\." (car groups) start)
434 (cdr groups)
435 (setq prefix
436 (concat "^" (substring (car groups) 0 (match-end 0))))
437 (string-match prefix (cadr groups)))
438 (progn
439 (push prefix prefixes)
440 (message "Descend hierarchy %s? ([y]nsq): "
441 (substring prefix 1 (1- (length prefix))))
442 (while (not (memq (setq ans (read-char)) '(?y ?\n ?\r ?n ?s ?q)))
443 (ding)
444 (message "Descend hierarchy %s? ([y]nsq): "
445 (substring prefix 1 (1- (length prefix)))))
446 (cond ((= ans ?n)
447 (while (and groups
448 (string-match prefix
449 (setq group (car groups))))
450 (push group gnus-killed-list)
451 (gnus-sethash group group gnus-killed-hashtb)
452 (setq groups (cdr groups)))
453 (setq starts (cdr starts)))
454 ((= ans ?s)
455 (while (and groups
456 (string-match prefix
457 (setq group (car groups))))
458 (gnus-sethash group group gnus-killed-hashtb)
459 (gnus-subscribe-alphabetically (car groups))
460 (setq groups (cdr groups)))
461 (setq starts (cdr starts)))
462 ((= ans ?q)
463 (while groups
464 (setq group (car groups))
465 (push group gnus-killed-list)
466 (gnus-sethash group group gnus-killed-hashtb)
467 (setq groups (cdr groups))))
468 (t nil)))
469 (message "Subscribe %s? ([n]yq)" (car groups))
470 (while (not (memq (setq ans (read-char)) '(?y ?\n ?\r ?q ?n)))
471 (ding)
472 (message "Subscribe %s? ([n]yq)" (car groups)))
473 (setq group (car groups))
474 (cond ((= ans ?y)
475 (gnus-subscribe-alphabetically (car groups))
476 (gnus-sethash group group gnus-killed-hashtb))
477 ((= ans ?q)
478 (while groups
479 (setq group (car groups))
480 (push group gnus-killed-list)
481 (gnus-sethash group group gnus-killed-hashtb)
482 (setq groups (cdr groups))))
483 (t
484 (push group gnus-killed-list)
485 (gnus-sethash group group gnus-killed-hashtb)))
486 (setq groups (cdr groups)))))))
487
488(defun gnus-subscribe-randomly (newsgroup)
489 "Subscribe new NEWSGROUP by making it the first newsgroup."
490 (gnus-subscribe-newsgroup newsgroup))
491
492(defun gnus-subscribe-alphabetically (newgroup)
493 "Subscribe new NEWSGROUP and insert it in alphabetical order."
494 (let ((groups (cdr gnus-newsrc-alist))
495 before)
496 (while (and (not before) groups)
497 (if (string< newgroup (caar groups))
498 (setq before (caar groups))
499 (setq groups (cdr groups))))
500 (gnus-subscribe-newsgroup newgroup before)))
501
502(defun gnus-subscribe-hierarchically (newgroup)
503 "Subscribe new NEWSGROUP and insert it in hierarchical newsgroup order."
504 ;; Basic ideas by mike-w@cs.aukuni.ac.nz (Mike Williams)
505 (save-excursion
506 (set-buffer (nnheader-find-file-noselect gnus-current-startup-file))
507 (let ((groupkey newgroup)
508 before)
509 (while (and (not before) groupkey)
510 (goto-char (point-min))
511 (let ((groupkey-re
512 (concat "^\\(" (regexp-quote groupkey) ".*\\)[!:]")))
513 (while (and (re-search-forward groupkey-re nil t)
514 (progn
515 (setq before (match-string 1))
516 (string< before newgroup)))))
517 ;; Remove tail of newsgroup name (eg. a.b.c -> a.b)
518 (setq groupkey
519 (when (string-match "^\\(.*\\)\\.[^.]+$" groupkey)
520 (substring groupkey (match-beginning 1) (match-end 1)))))
521 (gnus-subscribe-newsgroup newgroup before))
522 (kill-buffer (current-buffer))))
523
524(defun gnus-subscribe-interactively (group)
525 "Subscribe the new GROUP interactively.
526It is inserted in hierarchical newsgroup order if subscribed. If not,
527it is killed."
528 (if (gnus-y-or-n-p (format "Subscribe new newsgroup: %s " group))
529 (gnus-subscribe-hierarchically group)
530 (push group gnus-killed-list)))
531
532(defun gnus-subscribe-zombies (group)
533 "Make the new GROUP into a zombie group."
534 (push group gnus-zombie-list))
535
536(defun gnus-subscribe-killed (group)
537 "Make the new GROUP a killed group."
538 (push group gnus-killed-list))
539
540(defun gnus-subscribe-newsgroup (newsgroup &optional next)
541 "Subscribe new NEWSGROUP.
542If NEXT is non-nil, it is inserted before NEXT. Otherwise it is made
543the first newsgroup."
544 (save-excursion
545 (goto-char (point-min))
546 ;; We subscribe the group by changing its level to `subscribed'.
547 (gnus-group-change-level
548 newsgroup gnus-level-default-subscribed
549 gnus-level-killed (gnus-gethash (or next "dummy.group")
550 gnus-newsrc-hashtb))
551 (gnus-message 5 "Subscribe newsgroup: %s" newsgroup)))
552
553(defun gnus-read-active-file-p ()
554 "Say whether the active file has been read from `gnus-select-method'."
555 (memq gnus-select-method gnus-have-read-active-file))
556
557;;; General various misc type functions.
558
559;; Silence byte-compiler.
560(defvar gnus-current-headers)
561(defvar gnus-thread-indent-array)
562(defvar gnus-newsgroup-name)
563(defvar gnus-newsgroup-headers)
564(defvar gnus-group-list-mode)
565(defvar gnus-group-mark-positions)
566(defvar gnus-newsgroup-data)
567(defvar gnus-newsgroup-unreads)
568(defvar nnoo-state-alist)
569(defvar gnus-current-select-method)
570(defun gnus-clear-system ()
571 "Clear all variables and buffers."
572 ;; Clear Gnus variables.
573 (let ((variables gnus-variable-list))
574 (while variables
575 (set (car variables) nil)
576 (setq variables (cdr variables))))
577 ;; Clear other internal variables.
578 (setq gnus-list-of-killed-groups nil
579 gnus-have-read-active-file nil
580 gnus-newsrc-alist nil
581 gnus-newsrc-hashtb nil
582 gnus-killed-list nil
583 gnus-zombie-list nil
584 gnus-killed-hashtb nil
585 gnus-active-hashtb nil
586 gnus-moderated-hashtb nil
587 gnus-description-hashtb nil
588 gnus-current-headers nil
589 gnus-thread-indent-array nil
590 gnus-newsgroup-headers nil
591 gnus-newsgroup-name nil
592 gnus-server-alist nil
593 gnus-group-list-mode nil
594 gnus-opened-servers nil
595 gnus-group-mark-positions nil
596 gnus-newsgroup-data nil
597 gnus-newsgroup-unreads nil
598 nnoo-state-alist nil
599 gnus-current-select-method nil)
600 (gnus-shutdown 'gnus)
601 ;; Kill the startup file.
602 (and gnus-current-startup-file
603 (get-file-buffer gnus-current-startup-file)
604 (kill-buffer (get-file-buffer gnus-current-startup-file)))
605 ;; Clear the dribble buffer.
606 (gnus-dribble-clear)
607 ;; Kill global KILL file buffer.
608 (when (get-file-buffer (gnus-newsgroup-kill-file nil))
609 (kill-buffer (get-file-buffer (gnus-newsgroup-kill-file nil))))
610 (gnus-kill-buffer nntp-server-buffer)
611 ;; Kill Gnus buffers.
612 (while gnus-buffer-list
613 (gnus-kill-buffer (pop gnus-buffer-list)))
614 ;; Remove Gnus frames.
615 (gnus-kill-gnus-frames))
616
617(defun gnus-no-server-1 (&optional arg slave)
618 "Read network news.
619If ARG is a positive number, Gnus will use that as the
620startup level. If ARG is nil, Gnus will be started at level 2.
621If ARG is non-nil and not a positive number, Gnus will
622prompt the user for the name of an NNTP server to use.
623As opposed to `gnus', this command will not connect to the local server."
624 (interactive "P")
625 (let ((val (or arg (1- gnus-level-default-subscribed))))
626 (gnus val t slave)
627 (make-local-variable 'gnus-group-use-permanent-levels)
628 (setq gnus-group-use-permanent-levels val)))
629
630(defun gnus-1 (&optional arg dont-connect slave)
631 "Read network news.
632If ARG is non-nil and a positive number, Gnus will use that as the
633startup level. If ARG is non-nil and not a positive number, Gnus will
634prompt the user for the name of an NNTP server to use."
635 (interactive "P")
636
637 (if (and (get-buffer gnus-group-buffer)
638 (save-excursion
639 (set-buffer gnus-group-buffer)
640 (eq major-mode 'gnus-group-mode)))
641 (progn
642 (switch-to-buffer gnus-group-buffer)
643 (gnus-group-get-new-news
644 (and (numberp arg)
645 (> arg 0)
646 (max (car gnus-group-list-mode) arg))))
647
648 (gnus-splash)
649 (gnus-clear-system)
650 (nnheader-init-server-buffer)
eec82323 651 (setq gnus-slave slave)
a8151ef7 652 (gnus-read-init-file)
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653
654 (when (and (string-match "XEmacs" (emacs-version))
655 gnus-simple-splash)
656 (setq gnus-simple-splash nil)
657 (gnus-xmas-splash))
658
659 (let ((level (and (numberp arg) (> arg 0) arg))
660 did-connect)
661 (unwind-protect
662 (progn
663 (unless dont-connect
664 (setq did-connect
665 (gnus-start-news-server (and arg (not level))))))
666 (if (and (not dont-connect)
667 (not did-connect))
668 (gnus-group-quit)
669 (run-hooks 'gnus-startup-hook)
670 ;; NNTP server is successfully open.
671
672 ;; Find the current startup file name.
673 (setq gnus-current-startup-file
674 (gnus-make-newsrc-file gnus-startup-file))
675
676 ;; Read the dribble file.
677 (when (or gnus-slave gnus-use-dribble-file)
678 (gnus-dribble-read-file))
679
680 ;; Allow using GroupLens predictions.
681 (when gnus-use-grouplens
682 (bbb-login)
683 (add-hook 'gnus-summary-mode-hook 'gnus-grouplens-mode))
684
685 ;; Do the actual startup.
686 (gnus-setup-news nil level dont-connect)
687 ;; Generate the group buffer.
688 (gnus-group-list-groups level)
689 (gnus-group-first-unread-group)
690 (gnus-configure-windows 'group)
691 (gnus-group-set-mode-line)
692 (run-hooks 'gnus-started-hook))))))
693
694;;;###autoload
695(defun gnus-unload ()
696 "Unload all Gnus features."
697 (interactive)
698 (unless (boundp 'load-history)
a8151ef7 699 (error "Sorry, `gnus-unload' is not implemented in this Emacs version"))
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700 (let ((history load-history)
701 feature)
702 (while history
703 (and (string-match "^\\(gnus\\|nn\\)" (caar history))
704 (setq feature (cdr (assq 'provide (car history))))
705 (unload-feature feature 'force))
706 (setq history (cdr history)))))
707
708\f
709;;;
710;;; Dribble file
711;;;
712
713(defvar gnus-dribble-ignore nil)
714(defvar gnus-dribble-eval-file nil)
715
716(defun gnus-dribble-file-name ()
717 "Return the dribble file for the current .newsrc."
718 (concat
719 (if gnus-dribble-directory
720 (concat (file-name-as-directory gnus-dribble-directory)
721 (file-name-nondirectory gnus-current-startup-file))
722 gnus-current-startup-file)
723 "-dribble"))
724
725(defun gnus-dribble-enter (string)
726 "Enter STRING into the dribble buffer."
727 (when (and (not gnus-dribble-ignore)
728 gnus-dribble-buffer
729 (buffer-name gnus-dribble-buffer))
730 (let ((obuf (current-buffer)))
731 (set-buffer gnus-dribble-buffer)
732 (goto-char (point-max))
733 (insert string "\n")
734 (set-window-point (get-buffer-window (current-buffer)) (point-max))
735 (bury-buffer gnus-dribble-buffer)
736 (set-buffer obuf))))
737
738(defun gnus-dribble-touch ()
739 "Touch the dribble buffer."
740 (gnus-dribble-enter ""))
741
742(defun gnus-dribble-read-file ()
743 "Read the dribble file from disk."
744 (let ((dribble-file (gnus-dribble-file-name)))
745 (save-excursion
746 (set-buffer (setq gnus-dribble-buffer
747 (get-buffer-create
748 (file-name-nondirectory dribble-file))))
749 (gnus-add-current-to-buffer-list)
750 (erase-buffer)
751 (setq buffer-file-name dribble-file)
752 (auto-save-mode t)
753 (buffer-disable-undo (current-buffer))
754 (bury-buffer (current-buffer))
755 (set-buffer-modified-p nil)
756 (let ((auto (make-auto-save-file-name))
757 (gnus-dribble-ignore t)
758 modes)
759 (when (or (file-exists-p auto) (file-exists-p dribble-file))
760 ;; Load whichever file is newest -- the auto save file
761 ;; or the "real" file.
762 (if (file-newer-than-file-p auto dribble-file)
763 (nnheader-insert-file-contents auto)
764 (nnheader-insert-file-contents dribble-file))
765 (unless (zerop (buffer-size))
766 (set-buffer-modified-p t))
767 ;; Set the file modes to reflect the .newsrc file modes.
768 (save-buffer)
769 (when (and (file-exists-p gnus-current-startup-file)
a8151ef7 770 (file-exists-p dribble-file)
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771 (setq modes (file-modes gnus-current-startup-file)))
772 (set-file-modes dribble-file modes))
773 ;; Possibly eval the file later.
774 (when (gnus-y-or-n-p
775 "Gnus auto-save file exists. Do you want to read it? ")
776 (setq gnus-dribble-eval-file t)))))))
777
778(defun gnus-dribble-eval-file ()
779 (when gnus-dribble-eval-file
780 (setq gnus-dribble-eval-file nil)
781 (save-excursion
782 (let ((gnus-dribble-ignore t))
783 (set-buffer gnus-dribble-buffer)
784 (eval-buffer (current-buffer))))))
785
786(defun gnus-dribble-delete-file ()
787 (when (file-exists-p (gnus-dribble-file-name))
788 (delete-file (gnus-dribble-file-name)))
789 (when gnus-dribble-buffer
790 (save-excursion
791 (set-buffer gnus-dribble-buffer)
792 (let ((auto (make-auto-save-file-name)))
793 (when (file-exists-p auto)
794 (delete-file auto))
795 (erase-buffer)
796 (set-buffer-modified-p nil)))))
797
798(defun gnus-dribble-save ()
799 (when (and gnus-dribble-buffer
800 (buffer-name gnus-dribble-buffer))
801 (save-excursion
802 (set-buffer gnus-dribble-buffer)
803 (save-buffer))))
804
805(defun gnus-dribble-clear ()
806 (when (gnus-buffer-exists-p gnus-dribble-buffer)
807 (save-excursion
808 (set-buffer gnus-dribble-buffer)
809 (erase-buffer)
810 (set-buffer-modified-p nil)
811 (setq buffer-saved-size (buffer-size)))))
812
813\f
814;;;
815;;; Active & Newsrc File Handling
816;;;
817
818(defun gnus-setup-news (&optional rawfile level dont-connect)
819 "Setup news information.
820If RAWFILE is non-nil, the .newsrc file will also be read.
821If LEVEL is non-nil, the news will be set up at level LEVEL."
822 (let ((init (not (and gnus-newsrc-alist gnus-active-hashtb (not rawfile)))))
823
824 (when init
825 ;; Clear some variables to re-initialize news information.
826 (setq gnus-newsrc-alist nil
827 gnus-active-hashtb nil)
828 ;; Read the newsrc file and create `gnus-newsrc-hashtb'.
829 (gnus-read-newsrc-file rawfile))
830
831 (when (and (not (assoc "archive" gnus-server-alist))
832 (gnus-archive-server-wanted-p))
833 (push (cons "archive" gnus-message-archive-method)
834 gnus-server-alist))
835
836 ;; If we don't read the complete active file, we fill in the
837 ;; hashtb here.
838 (when (or (null gnus-read-active-file)
839 (eq gnus-read-active-file 'some))
840 (gnus-update-active-hashtb-from-killed))
841
842 ;; Read the active file and create `gnus-active-hashtb'.
843 ;; If `gnus-read-active-file' is nil, then we just create an empty
844 ;; hash table. The partial filling out of the hash table will be
845 ;; done in `gnus-get-unread-articles'.
846 (and gnus-read-active-file
847 (not level)
a8151ef7 848 (gnus-read-active-file nil dont-connect))
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849
850 (unless gnus-active-hashtb
851 (setq gnus-active-hashtb (gnus-make-hashtable 4096)))
852
853 ;; Initialize the cache.
854 (when gnus-use-cache
855 (gnus-cache-open))
856
857 ;; Possibly eval the dribble file.
858 (and init
859 (or gnus-use-dribble-file gnus-slave)
860 (gnus-dribble-eval-file))
861
862 ;; Slave Gnusii should then clear the dribble buffer.
863 (when (and init gnus-slave)
864 (gnus-dribble-clear))
865
866 (gnus-update-format-specifications)
867
868 ;; See whether we need to read the description file.
869 (when (and (boundp 'gnus-group-line-format)
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870 (let ((case-fold-search nil))
871 (string-match "%[-,0-9]*D" gnus-group-line-format))
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872 (not gnus-description-hashtb)
873 (not dont-connect)
874 gnus-read-active-file)
875 (gnus-read-all-descriptions-files))
876
877 ;; Find new newsgroups and treat them.
878 (when (and init gnus-check-new-newsgroups (not level)
879 (gnus-check-server gnus-select-method)
880 (not gnus-slave))
881 (gnus-find-new-newsgroups))
882
883 ;; We might read in new NoCeM messages here.
884 (when (and gnus-use-nocem
885 (not level)
886 (not dont-connect))
887 (gnus-nocem-scan-groups))
888
889 ;; Read any slave files.
890 (gnus-master-read-slave-newsrc)
891
892 ;; Find the number of unread articles in each non-dead group.
893 (let ((gnus-read-active-file (and (not level) gnus-read-active-file)))
894 (gnus-get-unread-articles level))
895
896 (when (and init gnus-check-bogus-newsgroups
897 gnus-read-active-file (not level)
898 (gnus-server-opened gnus-select-method))
899 (gnus-check-bogus-newsgroups))))
900
901(defun gnus-find-new-newsgroups (&optional arg)
902 "Search for new newsgroups and add them.
903Each new newsgroup will be treated with `gnus-subscribe-newsgroup-method.'
904The `-n' option line from .newsrc is respected.
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905If ARG (the prefix), use the `ask-server' method to query the server
906for new groups."
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907 (interactive "P")
908 (let ((check (if (or (and arg (not (listp gnus-check-new-newsgroups)))
909 (null gnus-read-active-file)
910 (eq gnus-read-active-file 'some))
911 'ask-server gnus-check-new-newsgroups)))
912 (unless (gnus-check-first-time-used)
913 (if (or (consp check)
914 (eq check 'ask-server))
915 ;; Ask the server for new groups.
916 (gnus-ask-server-for-new-groups)
917 ;; Go through the active hashtb and look for new groups.
918 (let ((groups 0)
919 group new-newsgroups)
920 (gnus-message 5 "Looking for new newsgroups...")
921 (unless gnus-have-read-active-file
922 (gnus-read-active-file))
923 (setq gnus-newsrc-last-checked-date (current-time-string))
924 (unless gnus-killed-hashtb
925 (gnus-make-hashtable-from-killed))
926 ;; Go though every newsgroup in `gnus-active-hashtb' and compare
927 ;; with `gnus-newsrc-hashtb' and `gnus-killed-hashtb'.
928 (mapatoms
929 (lambda (sym)
930 (if (or (null (setq group (symbol-name sym)))
931 (not (boundp sym))
932 (null (symbol-value sym))
933 (gnus-gethash group gnus-killed-hashtb)
934 (gnus-gethash group gnus-newsrc-hashtb))
935 ()
936 (let ((do-sub (gnus-matches-options-n group)))
937 (cond
938 ((eq do-sub 'subscribe)
939 (setq groups (1+ groups))
940 (gnus-sethash group group gnus-killed-hashtb)
941 (funcall gnus-subscribe-options-newsgroup-method group))
942 ((eq do-sub 'ignore)
943 nil)
944 (t
945 (setq groups (1+ groups))
946 (gnus-sethash group group gnus-killed-hashtb)
947 (if gnus-subscribe-hierarchical-interactive
948 (push group new-newsgroups)
949 (funcall gnus-subscribe-newsgroup-method group)))))))
950 gnus-active-hashtb)
951 (when new-newsgroups
952 (gnus-subscribe-hierarchical-interactive new-newsgroups))
953 (if (> groups 0)
954 (gnus-message 5 "%d new newsgroup%s arrived."
955 groups (if (> groups 1) "s have" " has"))
956 (gnus-message 5 "No new newsgroups.")))))))
957
958(defun gnus-matches-options-n (group)
959 ;; Returns `subscribe' if the group is to be unconditionally
960 ;; subscribed, `ignore' if it is to be ignored, and nil if there is
961 ;; no match for the group.
962
963 ;; First we check the two user variables.
964 (cond
965 ((and gnus-options-subscribe
966 (string-match gnus-options-subscribe group))
967 'subscribe)
968 ((and gnus-auto-subscribed-groups
969 (string-match gnus-auto-subscribed-groups group))
970 'subscribe)
971 ((and gnus-options-not-subscribe
972 (string-match gnus-options-not-subscribe group))
973 'ignore)
974 ;; Then we go through the list that was retrieved from the .newsrc
975 ;; file. This list has elements on the form
976 ;; `(REGEXP . {ignore,subscribe})'. The first match found (the list
977 ;; is in the reverse order of the options line) is returned.
978 (t
979 (let ((regs gnus-newsrc-options-n))
980 (while (and regs
981 (not (string-match (caar regs) group)))
982 (setq regs (cdr regs)))
983 (and regs (cdar regs))))))
984
985(defun gnus-ask-server-for-new-groups ()
986 (let* ((date (or gnus-newsrc-last-checked-date (current-time-string)))
987 (methods (cons gnus-select-method
988 (nconc
989 (when (gnus-archive-server-wanted-p)
990 (list "archive"))
991 (append
992 (and (consp gnus-check-new-newsgroups)
993 gnus-check-new-newsgroups)
994 gnus-secondary-select-methods))))
995 (groups 0)
996 (new-date (current-time-string))
997 group new-newsgroups got-new method hashtb
998 gnus-override-subscribe-method)
999 ;; Go through both primary and secondary select methods and
1000 ;; request new newsgroups.
1001 (while (setq method (gnus-server-get-method nil (pop methods)))
1002 (setq new-newsgroups nil)
1003 (setq gnus-override-subscribe-method method)
1004 (when (and (gnus-check-server method)
1005 (gnus-request-newgroups date method))
1006 (save-excursion
1007 (setq got-new t)
1008 (setq hashtb (gnus-make-hashtable 100))
1009 (set-buffer nntp-server-buffer)
1010 ;; Enter all the new groups into a hashtable.
1011 (gnus-active-to-gnus-format method hashtb 'ignore))
1012 ;; Now all new groups from `method' are in `hashtb'.
1013 (mapatoms
1014 (lambda (group-sym)
1015 (if (or (null (setq group (symbol-name group-sym)))
1016 (not (boundp group-sym))
1017 (null (symbol-value group-sym))
1018 (gnus-gethash group gnus-newsrc-hashtb)
1019 (member group gnus-zombie-list)
1020 (member group gnus-killed-list))
1021 ;; The group is already known.
1022 ()
1023 ;; Make this group active.
1024 (when (symbol-value group-sym)
1025 (gnus-set-active group (symbol-value group-sym)))
1026 ;; Check whether we want it or not.
1027 (let ((do-sub (gnus-matches-options-n group)))
1028 (cond
1029 ((eq do-sub 'subscribe)
1030 (incf groups)
1031 (gnus-sethash group group gnus-killed-hashtb)
1032 (funcall gnus-subscribe-options-newsgroup-method group))
1033 ((eq do-sub 'ignore)
1034 nil)
1035 (t
1036 (incf groups)
1037 (gnus-sethash group group gnus-killed-hashtb)
1038 (if gnus-subscribe-hierarchical-interactive
1039 (push group new-newsgroups)
1040 (funcall gnus-subscribe-newsgroup-method group)))))))
1041 hashtb))
1042 (when new-newsgroups
1043 (gnus-subscribe-hierarchical-interactive new-newsgroups)))
1044 ;; Suggested by Per Abrahamsen <amanda@iesd.auc.dk>.
1045 (when (> groups 0)
1046 (gnus-message 6 "%d new newsgroup%s arrived."
1047 groups (if (> groups 1) "s have" " has")))
1048 (when got-new
1049 (setq gnus-newsrc-last-checked-date new-date))
1050 got-new))
1051
1052(defun gnus-check-first-time-used ()
1053 (if (or (> (length gnus-newsrc-alist) 1)
1054 (file-exists-p gnus-startup-file)
1055 (file-exists-p (concat gnus-startup-file ".el"))
1056 (file-exists-p (concat gnus-startup-file ".eld")))
1057 nil
1058 (gnus-message 6 "First time user; subscribing you to default groups")
1059 (unless (gnus-read-active-file-p)
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1060 (let ((gnus-read-active-file t))
1061 (gnus-read-active-file)))
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1062 (setq gnus-newsrc-last-checked-date (current-time-string))
1063 (let ((groups gnus-default-subscribed-newsgroups)
1064 group)
1065 (if (eq groups t)
1066 nil
1067 (setq groups (or groups gnus-backup-default-subscribed-newsgroups))
1068 (mapatoms
1069 (lambda (sym)
1070 (if (null (setq group (symbol-name sym)))
1071 ()
1072 (let ((do-sub (gnus-matches-options-n group)))
1073 (cond
1074 ((eq do-sub 'subscribe)
1075 (gnus-sethash group group gnus-killed-hashtb)
1076 (funcall gnus-subscribe-options-newsgroup-method group))
1077 ((eq do-sub 'ignore)
1078 nil)
1079 (t
1080 (push group gnus-killed-list))))))
1081 gnus-active-hashtb)
1082 (while groups
1083 (when (gnus-active (car groups))
1084 (gnus-group-change-level
1085 (car groups) gnus-level-default-subscribed gnus-level-killed))
1086 (setq groups (cdr groups)))
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1087 (save-excursion
1088 (set-buffer gnus-group-buffer)
1089 (gnus-group-make-help-group))
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1090 (when gnus-novice-user
1091 (gnus-message 7 "`A k' to list killed groups"))))))
1092
1093(defun gnus-subscribe-group (group previous &optional method)
1094 (gnus-group-change-level
1095 (if method
1096 (list t group gnus-level-default-subscribed nil nil method)
1097 group)
1098 gnus-level-default-subscribed gnus-level-killed previous t))
1099
1100;; `gnus-group-change-level' is the fundamental function for changing
1101;; subscription levels of newsgroups. This might mean just changing
1102;; from level 1 to 2, which is pretty trivial, from 2 to 6 or back
1103;; again, which subscribes/unsubscribes a group, which is equally
1104;; trivial. Changing from 1-7 to 8-9 means that you kill a group, and
1105;; from 8-9 to 1-7 means that you remove the group from the list of
1106;; killed (or zombie) groups and add them to the (kinda) subscribed
1107;; groups. And last but not least, moving from 8 to 9 and 9 to 8,
1108;; which is trivial.
1109;; ENTRY can either be a string (newsgroup name) or a list (if
1110;; FROMKILLED is t, it's a list on the format (NUM INFO-LIST),
1111;; otherwise it's a list in the format of the `gnus-newsrc-hashtb'
1112;; entries.
1113;; LEVEL is the new level of the group, OLDLEVEL is the old level and
1114;; PREVIOUS is the group (in hashtb entry format) to insert this group
1115;; after.
1116(defun gnus-group-change-level (entry level &optional oldlevel
1117 previous fromkilled)
1118 (let (group info active num)
1119 ;; Glean what info we can from the arguments
1120 (if (consp entry)
1121 (if fromkilled (setq group (nth 1 entry))
1122 (setq group (car (nth 2 entry))))
1123 (setq group entry))
1124 (when (and (stringp entry)
1125 oldlevel
1126 (< oldlevel gnus-level-zombie))
1127 (setq entry (gnus-gethash entry gnus-newsrc-hashtb)))
1128 (if (and (not oldlevel)
1129 (consp entry))
1130 (setq oldlevel (gnus-info-level (nth 2 entry)))
1131 (setq oldlevel (or oldlevel 9)))
1132 (when (stringp previous)
1133 (setq previous (gnus-gethash previous gnus-newsrc-hashtb)))
1134
1135 (if (and (>= oldlevel gnus-level-zombie)
1136 (gnus-gethash group gnus-newsrc-hashtb))
1137 ;; We are trying to subscribe a group that is already
1138 ;; subscribed.
1139 () ; Do nothing.
1140
1141 (unless (gnus-ephemeral-group-p group)
1142 (gnus-dribble-enter
1143 (format "(gnus-group-change-level %S %S %S %S %S)"
1144 group level oldlevel (car (nth 2 previous)) fromkilled)))
1145
1146 ;; Then we remove the newgroup from any old structures, if needed.
1147 ;; If the group was killed, we remove it from the killed or zombie
1148 ;; list. If not, and it is in fact going to be killed, we remove
1149 ;; it from the newsrc hash table and assoc.
1150 (cond
1151 ((>= oldlevel gnus-level-zombie)
1152 (if (= oldlevel gnus-level-zombie)
1153 (setq gnus-zombie-list (delete group gnus-zombie-list))
1154 (setq gnus-killed-list (delete group gnus-killed-list))))
1155 (t
1156 (when (and (>= level gnus-level-zombie)
1157 entry)
1158 (gnus-sethash (car (nth 2 entry)) nil gnus-newsrc-hashtb)
1159 (when (nth 3 entry)
1160 (setcdr (gnus-gethash (car (nth 3 entry))
1161 gnus-newsrc-hashtb)
1162 (cdr entry)))
1163 (setcdr (cdr entry) (cdddr entry)))))
1164
1165 ;; Finally we enter (if needed) the list where it is supposed to
1166 ;; go, and change the subscription level. If it is to be killed,
1167 ;; we enter it into the killed or zombie list.
1168 (cond
1169 ((>= level gnus-level-zombie)
1170 ;; Remove from the hash table.
1171 (gnus-sethash group nil gnus-newsrc-hashtb)
1172 ;; We do not enter foreign groups into the list of dead
1173 ;; groups.
1174 (unless (gnus-group-foreign-p group)
1175 (if (= level gnus-level-zombie)
1176 (push group gnus-zombie-list)
1177 (push group gnus-killed-list))))
1178 (t
1179 ;; If the list is to be entered into the newsrc assoc, and
1180 ;; it was killed, we have to create an entry in the newsrc
1181 ;; hashtb format and fix the pointers in the newsrc assoc.
1182 (if (< oldlevel gnus-level-zombie)
1183 ;; It was alive, and it is going to stay alive, so we
1184 ;; just change the level and don't change any pointers or
1185 ;; hash table entries.
1186 (setcar (cdaddr entry) level)
1187 (if (listp entry)
1188 (setq info (cdr entry)
1189 num (car entry))
1190 (setq active (gnus-active group))
1191 (setq num
1192 (if active (- (1+ (cdr active)) (car active)) t))
1193 ;; Check whether the group is foreign. If so, the
1194 ;; foreign select method has to be entered into the
1195 ;; info.
1196 (let ((method (or gnus-override-subscribe-method
1197 (gnus-group-method group))))
1198 (if (eq method gnus-select-method)
1199 (setq info (list group level nil))
1200 (setq info (list group level nil nil method)))))
1201 (unless previous
1202 (setq previous
1203 (let ((p gnus-newsrc-alist))
1204 (while (cddr p)
1205 (setq p (cdr p)))
1206 p)))
1207 (setq entry (cons info (cddr previous)))
1208 (if (cdr previous)
1209 (progn
1210 (setcdr (cdr previous) entry)
1211 (gnus-sethash group (cons num (cdr previous))
1212 gnus-newsrc-hashtb))
1213 (setcdr previous entry)
1214 (gnus-sethash group (cons num previous)
1215 gnus-newsrc-hashtb))
1216 (when (cdr entry)
1217 (setcdr (gnus-gethash (caadr entry) gnus-newsrc-hashtb) entry))
1218 (gnus-dribble-enter
1219 (format
1220 "(gnus-group-set-info '%S)" info)))))
1221 (when gnus-group-change-level-function
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1222 (funcall gnus-group-change-level-function
1223 group level oldlevel previous)))))
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1224
1225(defun gnus-kill-newsgroup (newsgroup)
1226 "Obsolete function. Kills a newsgroup."
1227 (gnus-group-change-level
1228 (gnus-gethash newsgroup gnus-newsrc-hashtb) gnus-level-killed))
1229
1230(defun gnus-check-bogus-newsgroups (&optional confirm)
1231 "Remove bogus newsgroups.
1232If CONFIRM is non-nil, the user has to confirm the deletion of every
1233newsgroup."
1234 (let ((newsrc (cdr gnus-newsrc-alist))
1235 bogus group entry info)
1236 (gnus-message 5 "Checking bogus newsgroups...")
1237 (unless (gnus-read-active-file-p)
1238 (gnus-read-active-file t))
1239 (when (gnus-read-active-file-p)
1240 ;; Find all bogus newsgroup that are subscribed.
1241 (while newsrc
1242 (setq info (pop newsrc)
1243 group (gnus-info-group info))
1244 (unless (or (gnus-active group) ; Active
1245 (gnus-info-method info)) ; Foreign
1246 ;; Found a bogus newsgroup.
1247 (push group bogus)))
1248 (if confirm
1249 (map-y-or-n-p
1250 "Remove bogus group %s? "
1251 (lambda (group)
1252 ;; Remove all bogus subscribed groups by first killing them, and
1253 ;; then removing them from the list of killed groups.
1254 (when (setq entry (gnus-gethash group gnus-newsrc-hashtb))
1255 (gnus-group-change-level entry gnus-level-killed)
1256 (setq gnus-killed-list (delete group gnus-killed-list))))
1257 bogus '("group" "groups" "remove"))
1258 (while (setq group (pop bogus))
1259 ;; Remove all bogus subscribed groups by first killing them, and
1260 ;; then removing them from the list of killed groups.
1261 (when (setq entry (gnus-gethash group gnus-newsrc-hashtb))
1262 (gnus-group-change-level entry gnus-level-killed)
1263 (setq gnus-killed-list (delete group gnus-killed-list)))))
1264 ;; Then we remove all bogus groups from the list of killed and
1265 ;; zombie groups. They are removed without confirmation.
1266 (let ((dead-lists '(gnus-killed-list gnus-zombie-list))
1267 killed)
1268 (while dead-lists
1269 (setq killed (symbol-value (car dead-lists)))
1270 (while killed
1271 (unless (gnus-active (setq group (pop killed)))
1272 ;; The group is bogus.
1273 ;; !!!Slow as hell.
1274 (set (car dead-lists)
1275 (delete group (symbol-value (car dead-lists))))))
1276 (setq dead-lists (cdr dead-lists))))
1277 (run-hooks 'gnus-check-bogus-groups-hook)
1278 (gnus-message 5 "Checking bogus newsgroups...done"))))
1279
1280(defun gnus-check-duplicate-killed-groups ()
1281 "Remove duplicates from the list of killed groups."
1282 (interactive)
1283 (let ((killed gnus-killed-list))
1284 (while killed
1285 (gnus-message 9 "%d" (length killed))
1286 (setcdr killed (delete (car killed) (cdr killed)))
1287 (setq killed (cdr killed)))))
1288
1289;; We want to inline a function from gnus-cache, so we cheat here:
1290(eval-when-compile
1291 (defvar gnus-cache-active-hashtb)
1292 (defun gnus-cache-possibly-alter-active (group active)
1293 "Alter the ACTIVE info for GROUP to reflect the articles in the cache."
1294 (when gnus-cache-active-hashtb
1295 (let ((cache-active (gnus-gethash group gnus-cache-active-hashtb)))
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1296 (when cache-active
1297 (when (< (car cache-active) (car active))
1298 (setcar active (car cache-active)))
1299 (when (> (cdr cache-active) (cdr active))
1300 (setcdr active (cdr cache-active))))))))
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1301
1302(defun gnus-activate-group (group &optional scan dont-check method)
1303 ;; Check whether a group has been activated or not.
1304 ;; If SCAN, request a scan of that group as well.
1305 (let ((method (or method (inline (gnus-find-method-for-group group))))
1306 active)
1307 (and (inline (gnus-check-server method))
1308 ;; We escape all bugs and quit here to make it possible to
1309 ;; continue if a group is so out-there that it reports bugs
1310 ;; and stuff.
1311 (progn
1312 (and scan
1313 (gnus-check-backend-function 'request-scan (car method))
1314 (gnus-request-scan group method))
1315 t)
1316 (condition-case ()
1317 (inline (gnus-request-group group dont-check method))
1318 (error nil)
1319 (quit nil))
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1320 (setq active (gnus-parse-active))
1321 ;; If there are no articles in the group, the GROUP
1322 ;; command may have responded with the `(0 . 0)'. We
1323 ;; ignore this if we already have an active entry
1324 ;; for the group.
1325 (if (and (zerop (car active))
1326 (zerop (cdr active))
1327 (gnus-active group))
1328 (gnus-active group)
1329 (gnus-set-active group active)
1330 ;; Return the new active info.
1331 active))))
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1332
1333(defun gnus-get-unread-articles-in-group (info active &optional update)
1334 (when active
1335 ;; Allow the backend to update the info in the group.
1336 (when (and update
1337 (gnus-request-update-info
1338 info (inline (gnus-find-method-for-group
1339 (gnus-info-group info)))))
1340 (gnus-activate-group (gnus-info-group info) nil t))
1341 (let* ((range (gnus-info-read info))
1342 (num 0))
1343 ;; If a cache is present, we may have to alter the active info.
1344 (when (and gnus-use-cache info)
1345 (inline (gnus-cache-possibly-alter-active
1346 (gnus-info-group info) active)))
1347 ;; Modify the list of read articles according to what articles
1348 ;; are available; then tally the unread articles and add the
1349 ;; number to the group hash table entry.
1350 (cond
1351 ((zerop (cdr active))
1352 (setq num 0))
1353 ((not range)
1354 (setq num (- (1+ (cdr active)) (car active))))
1355 ((not (listp (cdr range)))
1356 ;; Fix a single (num . num) range according to the
1357 ;; active hash table.
1358 ;; Fix by Carsten Bormann <cabo@Informatik.Uni-Bremen.DE>.
1359 (and (< (cdr range) (car active)) (setcdr range (1- (car active))))
1360 (and (> (cdr range) (cdr active)) (setcdr range (cdr active)))
1361 ;; Compute number of unread articles.
1362 (setq num (max 0 (- (cdr active) (- (1+ (cdr range)) (car range))))))
1363 (t
1364 ;; The read list is a list of ranges. Fix them according to
1365 ;; the active hash table.
1366 ;; First peel off any elements that are below the lower
1367 ;; active limit.
1368 (while (and (cdr range)
1369 (>= (car active)
1370 (or (and (atom (cadr range)) (cadr range))
1371 (caadr range))))
1372 (if (numberp (car range))
1373 (setcar range
1374 (cons (car range)
1375 (or (and (numberp (cadr range))
1376 (cadr range))
1377 (cdadr range))))
1378 (setcdr (car range)
1379 (or (and (numberp (nth 1 range)) (nth 1 range))
1380 (cdadr range))))
1381 (setcdr range (cddr range)))
1382 ;; Adjust the first element to be the same as the lower limit.
1383 (when (and (not (atom (car range)))
1384 (< (cdar range) (car active)))
1385 (setcdr (car range) (1- (car active))))
1386 ;; Then we want to peel off any elements that are higher
1387 ;; than the upper active limit.
1388 (let ((srange range))
1389 ;; Go past all legal elements.
1390 (while (and (cdr srange)
1391 (<= (or (and (atom (cadr srange))
1392 (cadr srange))
1393 (caadr srange))
1394 (cdr active)))
1395 (setq srange (cdr srange)))
1396 (when (cdr srange)
1397 ;; Nuke all remaining illegal elements.
1398 (setcdr srange nil))
1399
1400 ;; Adjust the final element.
1401 (when (and (not (atom (car srange)))
1402 (> (cdar srange) (cdr active)))
1403 (setcdr (car srange) (cdr active))))
1404 ;; Compute the number of unread articles.
1405 (while range
1406 (setq num (+ num (- (1+ (or (and (atom (car range)) (car range))
1407 (cdar range)))
1408 (or (and (atom (car range)) (car range))
1409 (caar range)))))
1410 (setq range (cdr range)))
1411 (setq num (max 0 (- (cdr active) num)))))
1412 ;; Set the number of unread articles.
1413 (when info
1414 (setcar (gnus-gethash (gnus-info-group info) gnus-newsrc-hashtb) num))
1415 num)))
1416
1417;; Go though `gnus-newsrc-alist' and compare with `gnus-active-hashtb'
1418;; and compute how many unread articles there are in each group.
1419(defun gnus-get-unread-articles (&optional level)
1420 (let* ((newsrc (cdr gnus-newsrc-alist))
1421 (level (or level gnus-activate-level (1+ gnus-level-subscribed)))
1422 (foreign-level
1423 (min
1424 (cond ((and gnus-activate-foreign-newsgroups
1425 (not (numberp gnus-activate-foreign-newsgroups)))
1426 (1+ gnus-level-subscribed))
1427 ((numberp gnus-activate-foreign-newsgroups)
1428 gnus-activate-foreign-newsgroups)
1429 (t 0))
1430 level))
1431 info group active method)
1432 (gnus-message 5 "Checking new news...")
1433
1434 (while newsrc
1435 (setq active (gnus-active (setq group (gnus-info-group
1436 (setq info (pop newsrc))))))
1437
1438 ;; Check newsgroups. If the user doesn't want to check them, or
1439 ;; they can't be checked (for instance, if the news server can't
1440 ;; be reached) we just set the number of unread articles in this
1441 ;; newsgroup to t. This means that Gnus thinks that there are
1442 ;; unread articles, but it has no idea how many.
1443 (if (and (setq method (gnus-info-method info))
1444 (not (inline
1445 (gnus-server-equal
1446 gnus-select-method
1447 (setq method (gnus-server-get-method nil method)))))
1448 (not (gnus-secondary-method-p method)))
1449 ;; These groups are foreign. Check the level.
1450 (when (<= (gnus-info-level info) foreign-level)
1451 (setq active (gnus-activate-group group 'scan))
1452 (unless (inline (gnus-virtual-group-p group))
1453 (inline (gnus-close-group group)))
1454 (when (fboundp (intern (concat (symbol-name (car method))
1455 "-request-update-info")))
1456 (inline (gnus-request-update-info info method))))
1457 ;; These groups are native or secondary.
1458 (when (and (<= (gnus-info-level info) level)
1459 (not gnus-read-active-file))
1460 (setq active (gnus-activate-group group 'scan))
1461 (inline (gnus-close-group group))))
1462
1463 ;; Get the number of unread articles in the group.
1464 (if active
1465 (inline (gnus-get-unread-articles-in-group info active t))
1466 ;; The group couldn't be reached, so we nix out the number of
1467 ;; unread articles and stuff.
1468 (gnus-set-active group nil)
1469 (setcar (gnus-gethash group gnus-newsrc-hashtb) t)))
1470
1471 (gnus-message 5 "Checking new news...done")))
1472
1473;; Create a hash table out of the newsrc alist. The `car's of the
1474;; alist elements are used as keys.
1475(defun gnus-make-hashtable-from-newsrc-alist ()
1476 (let ((alist gnus-newsrc-alist)
1477 (ohashtb gnus-newsrc-hashtb)
1478 prev)
1479 (setq gnus-newsrc-hashtb (gnus-make-hashtable (length alist)))
1480 (setq alist
1481 (setq prev (setq gnus-newsrc-alist
1482 (if (equal (caar gnus-newsrc-alist)
1483 "dummy.group")
1484 gnus-newsrc-alist
1485 (cons (list "dummy.group" 0 nil) alist)))))
1486 (while alist
1487 (gnus-sethash
1488 (caar alist)
1489 ;; Preserve number of unread articles in groups.
1490 (cons (and ohashtb (car (gnus-gethash (caar alist) ohashtb)))
1491 prev)
1492 gnus-newsrc-hashtb)
1493 (setq prev alist
1494 alist (cdr alist)))))
1495
1496(defun gnus-make-hashtable-from-killed ()
1497 "Create a hash table from the killed and zombie lists."
1498 (let ((lists '(gnus-killed-list gnus-zombie-list))
1499 list)
1500 (setq gnus-killed-hashtb
1501 (gnus-make-hashtable
1502 (+ (length gnus-killed-list) (length gnus-zombie-list))))
1503 (while lists
1504 (setq list (symbol-value (pop lists)))
1505 (while list
1506 (gnus-sethash (car list) (pop list) gnus-killed-hashtb)))))
1507
1508(defun gnus-parse-active ()
1509 "Parse active info in the nntp server buffer."
1510 (save-excursion
1511 (set-buffer nntp-server-buffer)
1512 (goto-char (point-min))
1513 ;; Parse the result we got from `gnus-request-group'.
1514 (when (looking-at "[0-9]+ [0-9]+ \\([0-9]+\\) [0-9]+")
1515 (goto-char (match-beginning 1))
1516 (cons (read (current-buffer))
1517 (read (current-buffer))))))
1518
1519(defun gnus-make-articles-unread (group articles)
1520 "Mark ARTICLES in GROUP as unread."
1521 (let* ((info (nth 2 (or (gnus-gethash group gnus-newsrc-hashtb)
1522 (gnus-gethash (gnus-group-real-name group)
1523 gnus-newsrc-hashtb))))
1524 (ranges (gnus-info-read info))
1525 news article)
1526 (while articles
1527 (when (gnus-member-of-range
1528 (setq article (pop articles)) ranges)
1529 (push article news)))
1530 (when news
1531 (gnus-info-set-read
1532 info (gnus-remove-from-range (gnus-info-read info) (nreverse news)))
1533 (gnus-group-update-group group t))))
1534
1535;; Enter all dead groups into the hashtb.
1536(defun gnus-update-active-hashtb-from-killed ()
1537 (let ((hashtb (setq gnus-active-hashtb (gnus-make-hashtable 4096)))
1538 (lists (list gnus-killed-list gnus-zombie-list))
1539 killed)
1540 (while lists
1541 (setq killed (car lists))
1542 (while killed
1543 (gnus-sethash (car killed) nil hashtb)
1544 (setq killed (cdr killed)))
1545 (setq lists (cdr lists)))))
1546
1547(defun gnus-get-killed-groups ()
1548 "Go through the active hashtb and mark all unknown groups as killed."
1549 ;; First make sure active file has been read.
1550 (unless (gnus-read-active-file-p)
1551 (let ((gnus-read-active-file t))
1552 (gnus-read-active-file)))
1553 (unless gnus-killed-hashtb
1554 (gnus-make-hashtable-from-killed))
1555 ;; Go through all newsgroups that are known to Gnus - enlarge kill list.
1556 (mapatoms
1557 (lambda (sym)
1558 (let ((groups 0)
1559 (group (symbol-name sym)))
1560 (if (or (null group)
1561 (gnus-gethash group gnus-killed-hashtb)
1562 (gnus-gethash group gnus-newsrc-hashtb))
1563 ()
1564 (let ((do-sub (gnus-matches-options-n group)))
1565 (if (or (eq do-sub 'subscribe) (eq do-sub 'ignore))
1566 ()
1567 (setq groups (1+ groups))
1568 (push group gnus-killed-list)
1569 (gnus-sethash group group gnus-killed-hashtb))))))
1570 gnus-active-hashtb)
1571 (gnus-dribble-touch))
1572
1573;; Get the active file(s) from the backend(s).
a8151ef7 1574(defun gnus-read-active-file (&optional force not-native)
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1575 (gnus-group-set-mode-line)
1576 (let ((methods
1577 (append
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1578 (if (and (not not-native)
1579 (gnus-check-server gnus-select-method))
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1580 ;; The native server is available.
1581 (cons gnus-select-method gnus-secondary-select-methods)
1582 ;; The native server is down, so we just do the
1583 ;; secondary ones.
1584 gnus-secondary-select-methods)
1585 ;; Also read from the archive server.
1586 (when (gnus-archive-server-wanted-p)
1587 (list "archive"))))
1588 list-type)
1589 (setq gnus-have-read-active-file nil)
1590 (save-excursion
1591 (set-buffer nntp-server-buffer)
1592 (while methods
1593 (let* ((method (if (stringp (car methods))
1594 (gnus-server-get-method nil (car methods))
1595 (car methods)))
1596 (where (nth 1 method))
1597 (mesg (format "Reading active file%s via %s..."
1598 (if (and where (not (zerop (length where))))
1599 (concat " from " where) "")
1600 (car method))))
1601 (gnus-message 5 mesg)
1602 (when (gnus-check-server method)
1603 ;; Request that the backend scan its incoming messages.
1604 (when (gnus-check-backend-function 'request-scan (car method))
1605 (gnus-request-scan nil method))
1606 (cond
1607 ((and (eq gnus-read-active-file 'some)
1608 (gnus-check-backend-function 'retrieve-groups (car method))
1609 (not force))
1610 (let ((newsrc (cdr gnus-newsrc-alist))
1611 (gmethod (gnus-server-get-method nil method))
1612 groups info)
1613 (while (setq info (pop newsrc))
1614 (when (inline
1615 (gnus-server-equal
1616 (inline
1617 (gnus-find-method-for-group
1618 (gnus-info-group info) info))
1619 gmethod))
1620 (push (gnus-group-real-name (gnus-info-group info))
1621 groups)))
1622 (when groups
1623 (gnus-check-server method)
1624 (setq list-type (gnus-retrieve-groups groups method))
1625 (cond
1626 ((not list-type)
1627 (gnus-error
1628 1.2 "Cannot read partial active file from %s server."
1629 (car method)))
1630 ((eq list-type 'active)
1631 (gnus-active-to-gnus-format method gnus-active-hashtb))
1632 (t
1633 (gnus-groups-to-gnus-format method gnus-active-hashtb))))))
1634 ((null method)
1635 t)
1636 (t
1637 (if (not (gnus-request-list method))
1638 (unless (equal method gnus-message-archive-method)
a8151ef7 1639 (gnus-error 1 "Cannot read active file from %s server"
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1640 (car method)))
1641 (gnus-message 5 mesg)
1642 (gnus-active-to-gnus-format method gnus-active-hashtb)
1643 ;; We mark this active file as read.
1644 (push method gnus-have-read-active-file)
1645 (gnus-message 5 "%sdone" mesg))))))
1646 (setq methods (cdr methods))))))
1647
1648
1649(defun gnus-ignored-newsgroups-has-to-p ()
1650 "T only when gnus-ignored-newsgroups includes \"^to\\\\.\" as an element."
1651 ;; note this regexp is the same as:
1652 ;; (concat (regexp-quote "^to\\.") "\\($\\|" (regexp-quote "\\|") "\\)")
1653 (string-match "\\^to\\\\\\.\\($\\|\\\\|\\)"
1654 gnus-ignored-newsgroups))
1655
1656;; Read an active file and place the results in `gnus-active-hashtb'.
1657(defun gnus-active-to-gnus-format (&optional method hashtb ignore-errors)
1658 (unless method
1659 (setq method gnus-select-method))
1660 (let ((cur (current-buffer))
1661 (hashtb (or hashtb
1662 (if (and gnus-active-hashtb
1663 (not (equal method gnus-select-method)))
1664 gnus-active-hashtb
1665 (setq gnus-active-hashtb
1666 (if (equal method gnus-select-method)
1667 (gnus-make-hashtable
1668 (count-lines (point-min) (point-max)))
1669 (gnus-make-hashtable 4096)))))))
a8151ef7 1670 ;; Delete unnecessary lines.
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1671 (goto-char (point-min))
1672 (cond ((gnus-ignored-newsgroups-has-to-p)
1673 (delete-matching-lines gnus-ignored-newsgroups))
1674 ((string= gnus-ignored-newsgroups "")
1675 (delete-matching-lines "^to\\."))
1676 (t
1677 (delete-matching-lines (concat "^to\\.\\|"
1678 gnus-ignored-newsgroups))))
1679
1680 ;; Make the group names readable as a lisp expression even if they
1681 ;; contain special characters.
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1682 (goto-char (point-max))
1683 (while (re-search-backward "[][';?()#]" nil t)
1684 (insert ?\\))
1685
1686 ;; If these are groups from a foreign select method, we insert the
1687 ;; group prefix in front of the group names.
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1688 (when (not (gnus-server-equal
1689 (gnus-server-get-method nil method)
1690 (gnus-server-get-method nil gnus-select-method)))
1691 (let ((prefix (gnus-group-prefixed-name "" method)))
1692 (goto-char (point-min))
1693 (while (and (not (eobp))
1694 (progn (insert prefix)
1695 (zerop (forward-line 1)))))))
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1696 ;; Store the active file in a hash table.
1697 (goto-char (point-min))
1698 (let (group max min)
1699 (while (not (eobp))
1700 (condition-case ()
1701 (progn
1702 (narrow-to-region (point) (gnus-point-at-eol))
1703 ;; group gets set to a symbol interned in the hash table
1704 ;; (what a hack!!) - jwz
1705 (setq group (let ((obarray hashtb)) (read cur)))
1706 (if (and (numberp (setq max (read cur)))
1707 (numberp (setq min (read cur)))
1708 (progn
1709 (skip-chars-forward " \t")
1710 (not
1711 (or (= (following-char) ?=)
1712 (= (following-char) ?x)
1713 (= (following-char) ?j)))))
1714 (progn
1715 (set group (cons min max))
1716 ;; if group is moderated, stick in moderation table
1717 (when (= (following-char) ?m)
1718 (unless gnus-moderated-hashtb
1719 (setq gnus-moderated-hashtb (gnus-make-hashtable)))
1720 (gnus-sethash (symbol-name group) t
1721 gnus-moderated-hashtb)))
1722 (set group nil)))
1723 (error
1724 (and group
1725 (symbolp group)
1726 (set group nil))
1727 (unless ignore-errors
1728 (gnus-message 3 "Warning - illegal active: %s"
1729 (buffer-substring
1730 (gnus-point-at-bol) (gnus-point-at-eol))))))
1731 (widen)
1732 (forward-line 1)))))
1733
1734(defun gnus-groups-to-gnus-format (method &optional hashtb)
1735 ;; Parse a "groups" active file.
1736 (let ((cur (current-buffer))
1737 (hashtb (or hashtb
1738 (if (and method gnus-active-hashtb)
1739 gnus-active-hashtb
1740 (setq gnus-active-hashtb
1741 (gnus-make-hashtable
1742 (count-lines (point-min) (point-max)))))))
1743 (prefix (and method
1744 (not (gnus-server-equal
1745 (gnus-server-get-method nil method)
1746 (gnus-server-get-method nil gnus-select-method)))
1747 (gnus-group-prefixed-name "" method))))
1748
1749 (goto-char (point-min))
1750 ;; We split this into to separate loops, one with the prefix
1751 ;; and one without to speed the reading up somewhat.
1752 (if prefix
1753 (let (min max opoint group)
1754 (while (not (eobp))
1755 (condition-case ()
1756 (progn
1757 (read cur) (read cur)
1758 (setq min (read cur)
1759 max (read cur)
1760 opoint (point))
1761 (skip-chars-forward " \t")
1762 (insert prefix)
1763 (goto-char opoint)
1764 (set (let ((obarray hashtb)) (read cur))
1765 (cons min max)))
1766 (error (and group (symbolp group) (set group nil))))
1767 (forward-line 1)))
1768 (let (min max group)
1769 (while (not (eobp))
1770 (condition-case ()
1771 (when (= (following-char) ?2)
1772 (read cur) (read cur)
1773 (setq min (read cur)
1774 max (read cur))
1775 (set (setq group (let ((obarray hashtb)) (read cur)))
1776 (cons min max)))
1777 (error (and group (symbolp group) (set group nil))))
1778 (forward-line 1))))))
1779
1780(defun gnus-read-newsrc-file (&optional force)
1781 "Read startup file.
1782If FORCE is non-nil, the .newsrc file is read."
1783 ;; Reset variables that might be defined in the .newsrc.eld file.
1784 (let ((variables gnus-variable-list))
1785 (while variables
1786 (set (car variables) nil)
1787 (setq variables (cdr variables))))
1788 (let* ((newsrc-file gnus-current-startup-file)
1789 (quick-file (concat newsrc-file ".el")))
1790 (save-excursion
1791 ;; We always load the .newsrc.eld file. If always contains
1792 ;; much information that can not be gotten from the .newsrc
1793 ;; file (ticked articles, killed groups, foreign methods, etc.)
1794 (gnus-read-newsrc-el-file quick-file)
1795
1796 (when (and (file-exists-p gnus-current-startup-file)
1797 (or force
1798 (and (file-newer-than-file-p newsrc-file quick-file)
1799 (file-newer-than-file-p newsrc-file
1800 (concat quick-file "d")))
1801 (not gnus-newsrc-alist)))
1802 ;; We read the .newsrc file. Note that if there if a
1803 ;; .newsrc.eld file exists, it has already been read, and
1804 ;; the `gnus-newsrc-hashtb' has been created. While reading
1805 ;; the .newsrc file, Gnus will only use the information it
1806 ;; can find there for changing the data already read -
1807 ;; i. e., reading the .newsrc file will not trash the data
1808 ;; already read (except for read articles).
1809 (save-excursion
1810 (gnus-message 5 "Reading %s..." newsrc-file)
1811 (set-buffer (nnheader-find-file-noselect newsrc-file))
1812 (buffer-disable-undo (current-buffer))
1813 (gnus-newsrc-to-gnus-format)
1814 (kill-buffer (current-buffer))
1815 (gnus-message 5 "Reading %s...done" newsrc-file)))
1816
1817 ;; Convert old to new.
1818 (gnus-convert-old-newsrc))))
1819
1820(defun gnus-convert-old-newsrc ()
1821 "Convert old newsrc into the new format, if needed."
1822 (let ((fcv (and gnus-newsrc-file-version
1823 (gnus-continuum-version gnus-newsrc-file-version))))
1824 (cond
1825 ;; No .newsrc.eld file was loaded.
1826 ((null fcv) nil)
1827 ;; Gnus 5 .newsrc.eld was loaded.
1828 ((< fcv (gnus-continuum-version "September Gnus v0.1"))
1829 (gnus-convert-old-ticks)))))
1830
1831(defun gnus-convert-old-ticks ()
1832 (let ((newsrc (cdr gnus-newsrc-alist))
1833 marks info dormant ticked)
1834 (while (setq info (pop newsrc))
1835 (when (setq marks (gnus-info-marks info))
1836 (setq dormant (cdr (assq 'dormant marks))
1837 ticked (cdr (assq 'tick marks)))
1838 (when (or dormant ticked)
1839 (gnus-info-set-read
1840 info
1841 (gnus-add-to-range
1842 (gnus-info-read info)
1843 (nconc (gnus-uncompress-range dormant)
1844 (gnus-uncompress-range ticked)))))))))
1845
1846(defun gnus-read-newsrc-el-file (file)
1847 (let ((ding-file (concat file "d")))
1848 ;; We always, always read the .eld file.
1849 (gnus-message 5 "Reading %s..." ding-file)
1850 (let (gnus-newsrc-assoc)
1851 (condition-case nil
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1852 (let ((coding-system-for-read gnus-startup-file-coding-system))
1853 (load ding-file t t t))
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1854 (error
1855 (ding)
1856 (unless (gnus-yes-or-no-p
1857 (format "Error in %s; continue? " ding-file))
1858 (error "Error in %s" ding-file))))
1859 (when gnus-newsrc-assoc
1860 (setq gnus-newsrc-alist gnus-newsrc-assoc)))
1861 (gnus-make-hashtable-from-newsrc-alist)
1862 (when (file-newer-than-file-p file ding-file)
1863 ;; Old format quick file
1864 (gnus-message 5 "Reading %s..." file)
1865 ;; The .el file is newer than the .eld file, so we read that one
1866 ;; as well.
1867 (gnus-read-old-newsrc-el-file file))))
1868
1869;; Parse the old-style quick startup file
1870(defun gnus-read-old-newsrc-el-file (file)
1871 (let (newsrc killed marked group m info)
1872 (prog1
1873 (let ((gnus-killed-assoc nil)
1874 gnus-marked-assoc gnus-newsrc-alist gnus-newsrc-assoc)
1875 (prog1
1876 (ignore-errors
1877 (load file t t t))
1878 (setq newsrc gnus-newsrc-assoc
1879 killed gnus-killed-assoc
1880 marked gnus-marked-assoc)))
1881 (setq gnus-newsrc-alist nil)
1882 (while (setq group (pop newsrc))
1883 (if (setq info (gnus-get-info (car group)))
1884 (progn
1885 (gnus-info-set-read info (cddr group))
1886 (gnus-info-set-level
1887 info (if (nth 1 group) gnus-level-default-subscribed
1888 gnus-level-default-unsubscribed))
1889 (push info gnus-newsrc-alist))
1890 (push (setq info
1891 (list (car group)
1892 (if (nth 1 group) gnus-level-default-subscribed
1893 gnus-level-default-unsubscribed)
1894 (cddr group)))
1895 gnus-newsrc-alist))
1896 ;; Copy marks into info.
1897 (when (setq m (assoc (car group) marked))
1898 (unless (nthcdr 3 info)
1899 (nconc info (list nil)))
1900 (gnus-info-set-marks
1901 info (list (cons 'tick (gnus-compress-sequence
1902 (sort (cdr m) '<) t))))))
1903 (setq newsrc killed)
1904 (while newsrc
1905 (setcar newsrc (caar newsrc))
1906 (setq newsrc (cdr newsrc)))
1907 (setq gnus-killed-list killed))
1908 ;; The .el file version of this variable does not begin with
1909 ;; "options", while the .eld version does, so we just add it if it
1910 ;; isn't there.
1911 (when
1912 gnus-newsrc-options
1913 (when (not (string-match "^ *options" gnus-newsrc-options))
1914 (setq gnus-newsrc-options (concat "options " gnus-newsrc-options)))
1915 (when (not (string-match "\n$" gnus-newsrc-options))
1916 (setq gnus-newsrc-options (concat gnus-newsrc-options "\n")))
1917 ;; Finally, if we read some options lines, we parse them.
1918 (unless (string= gnus-newsrc-options "")
1919 (gnus-newsrc-parse-options gnus-newsrc-options)))
1920
1921 (setq gnus-newsrc-alist (nreverse gnus-newsrc-alist))
1922 (gnus-make-hashtable-from-newsrc-alist)))
1923
1924(defun gnus-make-newsrc-file (file)
1925 "Make server dependent file name by catenating FILE and server host name."
1926 (let* ((file (expand-file-name file nil))
1927 (real-file (concat file "-" (nth 1 gnus-select-method))))
1928 (if (or (file-exists-p real-file)
1929 (file-exists-p (concat real-file ".el"))
1930 (file-exists-p (concat real-file ".eld")))
1931 real-file file)))
1932
1933(defun gnus-newsrc-to-gnus-format ()
1934 (setq gnus-newsrc-options "")
1935 (setq gnus-newsrc-options-n nil)
1936
1937 (unless gnus-active-hashtb
1938 (setq gnus-active-hashtb (gnus-make-hashtable 4096)))
1939 (let ((buf (current-buffer))
1940 (already-read (> (length gnus-newsrc-alist) 1))
1941 group subscribed options-symbol newsrc Options-symbol
1942 symbol reads num1)
1943 (goto-char (point-min))
1944 ;; We intern the symbol `options' in the active hashtb so that we
1945 ;; can `eq' against it later.
1946 (set (setq options-symbol (intern "options" gnus-active-hashtb)) nil)
1947 (set (setq Options-symbol (intern "Options" gnus-active-hashtb)) nil)
1948
1949 (while (not (eobp))
1950 ;; We first read the first word on the line by narrowing and
1951 ;; then reading into `gnus-active-hashtb'. Most groups will
1952 ;; already exist in that hashtb, so this will save some string
1953 ;; space.
1954 (narrow-to-region
1955 (point)
1956 (progn (skip-chars-forward "^ \t!:\n") (point)))
1957 (goto-char (point-min))
1958 (setq symbol
1959 (and (/= (point-min) (point-max))
1960 (let ((obarray gnus-active-hashtb)) (read buf))))
1961 (widen)
1962 ;; Now, the symbol we have read is either `options' or a group
1963 ;; name. If it is an options line, we just add it to a string.
1964 (cond
1965 ((or (eq symbol options-symbol)
1966 (eq symbol Options-symbol))
1967 (setq gnus-newsrc-options
1968 ;; This concating is quite inefficient, but since our
1969 ;; thorough studies show that approx 99.37% of all
1970 ;; .newsrc files only contain a single options line, we
1971 ;; don't give a damn, frankly, my dear.
1972 (concat gnus-newsrc-options
1973 (buffer-substring
1974 (gnus-point-at-bol)
1975 ;; Options may continue on the next line.
1976 (or (and (re-search-forward "^[^ \t]" nil 'move)
1977 (progn (beginning-of-line) (point)))
1978 (point)))))
1979 (forward-line -1))
1980 (symbol
1981 ;; Group names can be just numbers.
1982 (when (numberp symbol)
1983 (setq symbol (intern (int-to-string symbol) gnus-active-hashtb)))
1984 (unless (boundp symbol)
1985 (set symbol nil))
1986 ;; It was a group name.
1987 (setq subscribed (= (following-char) ?:)
1988 group (symbol-name symbol)
1989 reads nil)
1990 (if (eolp)
1991 ;; If the line ends here, this is clearly a buggy line, so
1992 ;; we put point a the beginning of line and let the cond
1993 ;; below do the error handling.
1994 (beginning-of-line)
1995 ;; We skip to the beginning of the ranges.
1996 (skip-chars-forward "!: \t"))
1997 ;; We are now at the beginning of the list of read articles.
1998 ;; We read them range by range.
1999 (while
2000 (cond
2001 ((looking-at "[0-9]+")
2002 ;; We narrow and read a number instead of buffer-substring/
2003 ;; string-to-int because it's faster. narrow/widen is
2004 ;; faster than save-restriction/narrow, and save-restriction
2005 ;; produces a garbage object.
2006 (setq num1 (progn
2007 (narrow-to-region (match-beginning 0) (match-end 0))
2008 (read buf)))
2009 (widen)
2010 ;; If the next character is a dash, then this is a range.
2011 (if (= (following-char) ?-)
2012 (progn
2013 ;; We read the upper bound of the range.
2014 (forward-char 1)
2015 (if (not (looking-at "[0-9]+"))
2016 ;; This is a buggy line, by we pretend that
2017 ;; it's kinda OK. Perhaps the user should be
2018 ;; dinged?
2019 (push num1 reads)
2020 (push
2021 (cons num1
2022 (progn
2023 (narrow-to-region (match-beginning 0)
2024 (match-end 0))
2025 (read buf)))
2026 reads)
2027 (widen)))
2028 ;; It was just a simple number, so we add it to the
2029 ;; list of ranges.
2030 (push num1 reads))
2031 ;; If the next char in ?\n, then we have reached the end
2032 ;; of the line and return nil.
2033 (/= (following-char) ?\n))
2034 ((= (following-char) ?\n)
2035 ;; End of line, so we end.
2036 nil)
2037 (t
2038 ;; Not numbers and not eol, so this might be a buggy
2039 ;; line...
2040 (unless (eobp)
2041 ;; If it was eob instead of ?\n, we allow it.
2042 ;; The line was buggy.
2043 (setq group nil)
2044 (gnus-error 3.1 "Mangled line: %s"
2045 (buffer-substring (gnus-point-at-bol)
2046 (gnus-point-at-eol))))
2047 nil))
2048 ;; Skip past ", ". Spaces are illegal in these ranges, but
2049 ;; we allow them, because it's a common mistake to put a
2050 ;; space after the comma.
2051 (skip-chars-forward ", "))
2052
2053 ;; We have already read .newsrc.eld, so we gently update the
2054 ;; data in the hash table with the information we have just
2055 ;; read.
2056 (when group
2057 (let ((info (gnus-get-info group))
2058 level)
2059 (if info
2060 ;; There is an entry for this file in the alist.
2061 (progn
2062 (gnus-info-set-read info (nreverse reads))
2063 ;; We update the level very gently. In fact, we
2064 ;; only change it if there's been a status change
2065 ;; from subscribed to unsubscribed, or vice versa.
2066 (setq level (gnus-info-level info))
2067 (cond ((and (<= level gnus-level-subscribed)
2068 (not subscribed))
2069 (setq level (if reads
2070 gnus-level-default-unsubscribed
2071 (1+ gnus-level-default-unsubscribed))))
2072 ((and (> level gnus-level-subscribed) subscribed)
2073 (setq level gnus-level-default-subscribed)))
2074 (gnus-info-set-level info level))
2075 ;; This is a new group.
2076 (setq info (list group
2077 (if subscribed
2078 gnus-level-default-subscribed
2079 (if reads
2080 (1+ gnus-level-subscribed)
2081 gnus-level-default-unsubscribed))
2082 (nreverse reads))))
2083 (push info newsrc)))))
2084 (forward-line 1))
2085
2086 (setq newsrc (nreverse newsrc))
2087
2088 (if (not already-read)
2089 ()
2090 ;; We now have two newsrc lists - `newsrc', which is what we
2091 ;; have read from .newsrc, and `gnus-newsrc-alist', which is
2092 ;; what we've read from .newsrc.eld. We have to merge these
2093 ;; lists. We do this by "attaching" any (foreign) groups in the
2094 ;; gnus-newsrc-alist to the (native) group that precedes them.
2095 (let ((rc (cdr gnus-newsrc-alist))
2096 (prev gnus-newsrc-alist)
2097 entry mentry)
2098 (while rc
2099 (or (null (nth 4 (car rc))) ; It's a native group.
2100 (assoc (caar rc) newsrc) ; It's already in the alist.
2101 (if (setq entry (assoc (caar prev) newsrc))
2102 (setcdr (setq mentry (memq entry newsrc))
2103 (cons (car rc) (cdr mentry)))
2104 (push (car rc) newsrc)))
2105 (setq prev rc
2106 rc (cdr rc)))))
2107
2108 (setq gnus-newsrc-alist newsrc)
2109 ;; We make the newsrc hashtb.
2110 (gnus-make-hashtable-from-newsrc-alist)
2111
2112 ;; Finally, if we read some options lines, we parse them.
2113 (unless (string= gnus-newsrc-options "")
2114 (gnus-newsrc-parse-options gnus-newsrc-options))))
2115
2116;; Parse options lines to find "options -n !all rec.all" and stuff.
2117;; The return value will be a list on the form
2118;; ((regexp1 . ignore)
2119;; (regexp2 . subscribe)...)
2120;; When handling new newsgroups, groups that match a `ignore' regexp
2121;; will be ignored, and groups that match a `subscribe' regexp will be
2122;; subscribed. A line like
2123;; options -n !all rec.all
2124;; will lead to a list that looks like
2125;; (("^rec\\..+" . subscribe)
2126;; ("^.+" . ignore))
2127;; So all "rec.*" groups will be subscribed, while all the other
2128;; groups will be ignored. Note that "options -n !all rec.all" is very
2129;; different from "options -n rec.all !all".
2130(defun gnus-newsrc-parse-options (options)
2131 (let (out eol)
2132 (save-excursion
2133 (gnus-set-work-buffer)
2134 (insert (regexp-quote options))
2135 ;; First we treat all continuation lines.
2136 (goto-char (point-min))
2137 (while (re-search-forward "\n[ \t]+" nil t)
2138 (replace-match " " t t))
2139 ;; Then we transform all "all"s into ".+"s.
2140 (goto-char (point-min))
2141 (while (re-search-forward "\\ball\\b" nil t)
2142 (replace-match ".+" t t))
2143 (goto-char (point-min))
2144 ;; We remove all other options than the "-n" ones.
2145 (while (re-search-forward "[ \t]-[^n][^-]*" nil t)
2146 (replace-match " ")
2147 (forward-char -1))
2148 (goto-char (point-min))
2149
2150 ;; We are only interested in "options -n" lines - we
2151 ;; ignore the other option lines.
2152 (while (re-search-forward "[ \t]-n" nil t)
2153 (setq eol
2154 (or (save-excursion
2155 (and (re-search-forward "[ \t]-n" (gnus-point-at-eol) t)
2156 (- (point) 2)))
2157 (gnus-point-at-eol)))
2158 ;; Search for all "words"...
2159 (while (re-search-forward "[^ \t,\n]+" eol t)
2160 (if (= (char-after (match-beginning 0)) ?!)
2161 ;; If the word begins with a bang (!), this is a "not"
2162 ;; spec. We put this spec (minus the bang) and the
2163 ;; symbol `ignore' into the list.
2164 (push (cons (concat
2165 "^" (buffer-substring
2166 (1+ (match-beginning 0))
2167 (match-end 0)))
2168 'ignore)
2169 out)
2170 ;; There was no bang, so this is a "yes" spec.
2171 (push (cons (concat "^" (match-string 0))
2172 'subscribe)
2173 out))))
2174
2175 (setq gnus-newsrc-options-n out))))
2176
2177(defun gnus-save-newsrc-file (&optional force)
2178 "Save .newsrc file."
2179 ;; Note: We cannot save .newsrc file if all newsgroups are removed
2180 ;; from the variable gnus-newsrc-alist.
2181 (when (and (or gnus-newsrc-alist gnus-killed-list)
2182 gnus-current-startup-file)
2183 (save-excursion
2184 (if (and (or gnus-use-dribble-file gnus-slave)
2185 (not force)
2186 (or (not gnus-dribble-buffer)
2187 (not (buffer-name gnus-dribble-buffer))
2188 (zerop (save-excursion
2189 (set-buffer gnus-dribble-buffer)
2190 (buffer-size)))))
2191 (gnus-message 4 "(No changes need to be saved)")
2192 (run-hooks 'gnus-save-newsrc-hook)
2193 (if gnus-slave
2194 (gnus-slave-save-newsrc)
2195 ;; Save .newsrc.
2196 (when gnus-save-newsrc-file
2197 (gnus-message 8 "Saving %s..." gnus-current-startup-file)
2198 (gnus-gnus-to-newsrc-format)
2199 (gnus-message 8 "Saving %s...done" gnus-current-startup-file))
2200 ;; Save .newsrc.eld.
2201 (set-buffer (get-buffer-create " *Gnus-newsrc*"))
2202 (make-local-variable 'version-control)
2203 (setq version-control 'never)
2204 (setq buffer-file-name
2205 (concat gnus-current-startup-file ".eld"))
2206 (setq default-directory (file-name-directory buffer-file-name))
2207 (gnus-add-current-to-buffer-list)
2208 (buffer-disable-undo (current-buffer))
2209 (erase-buffer)
2210 (gnus-message 5 "Saving %s.eld..." gnus-current-startup-file)
2211 (gnus-gnus-to-quick-newsrc-format)
2212 (run-hooks 'gnus-save-quick-newsrc-hook)
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2213 (let ((coding-system-for-write gnus-startup-file-coding-system))
2214 (save-buffer))
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2215 (kill-buffer (current-buffer))
2216 (gnus-message
2217 5 "Saving %s.eld...done" gnus-current-startup-file))
2218 (gnus-dribble-delete-file)
2219 (gnus-group-set-mode-line)))))
2220
2221(defun gnus-gnus-to-quick-newsrc-format ()
2222 "Insert Gnus variables such as gnus-newsrc-alist in lisp format."
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2223 (let ((print-quoted t)
2224 (print-escape-newlines t))
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2225 (insert ";; -*- emacs-lisp -*-\n")
2226 (insert ";; Gnus startup file.\n")
2227 (insert
2228 ";; Never delete this file - touch .newsrc instead to force Gnus\n")
2229 (insert ";; to read .newsrc.\n")
2230 (insert "(setq gnus-newsrc-file-version "
2231 (prin1-to-string gnus-version) ")\n")
2232 (let* ((gnus-killed-list
2233 (if (and gnus-save-killed-list
2234 (stringp gnus-save-killed-list))
2235 (gnus-strip-killed-list)
2236 gnus-killed-list))
2237 (variables
2238 (if gnus-save-killed-list gnus-variable-list
2239 ;; Remove the `gnus-killed-list' from the list of variables
2240 ;; to be saved, if required.
2241 (delq 'gnus-killed-list (copy-sequence gnus-variable-list))))
2242 ;; Peel off the "dummy" group.
2243 (gnus-newsrc-alist (cdr gnus-newsrc-alist))
2244 variable)
2245 ;; Insert the variables into the file.
2246 (while variables
2247 (when (and (boundp (setq variable (pop variables)))
2248 (symbol-value variable))
2249 (insert "(setq " (symbol-name variable) " '")
2250 (gnus-prin1 (symbol-value variable))
2251 (insert ")\n"))))))
2252
2253(defun gnus-strip-killed-list ()
2254 "Return the killed list minus the groups that match `gnus-save-killed-list'."
2255 (let ((list gnus-killed-list)
2256 olist)
2257 (while list
2258 (when (string-match gnus-save-killed-list)
2259 (push (car list) olist))
2260 (pop list))
2261 (nreverse olist)))
2262
2263(defun gnus-gnus-to-newsrc-format ()
2264 ;; Generate and save the .newsrc file.
2265 (save-excursion
2266 (set-buffer (create-file-buffer gnus-current-startup-file))
2267 (let ((newsrc (cdr gnus-newsrc-alist))
2268 (standard-output (current-buffer))
2269 info ranges range method)
2270 (setq buffer-file-name gnus-current-startup-file)
2271 (setq default-directory (file-name-directory buffer-file-name))
2272 (buffer-disable-undo (current-buffer))
2273 (erase-buffer)
2274 ;; Write options.
2275 (when gnus-newsrc-options
2276 (insert gnus-newsrc-options))
2277 ;; Write subscribed and unsubscribed.
2278 (while (setq info (pop newsrc))
2279 ;; Don't write foreign groups to .newsrc.
2280 (when (or (null (setq method (gnus-info-method info)))
2281 (equal method "native")
2282 (inline (gnus-server-equal method gnus-select-method)))
2283 (insert (gnus-info-group info)
2284 (if (> (gnus-info-level info) gnus-level-subscribed)
2285 "!" ":"))
2286 (when (setq ranges (gnus-info-read info))
2287 (insert " ")
2288 (if (not (listp (cdr ranges)))
2289 (if (= (car ranges) (cdr ranges))
2290 (princ (car ranges))
2291 (princ (car ranges))
2292 (insert "-")
2293 (princ (cdr ranges)))
2294 (while (setq range (pop ranges))
2295 (if (or (atom range) (= (car range) (cdr range)))
2296 (princ (or (and (atom range) range) (car range)))
2297 (princ (car range))
2298 (insert "-")
2299 (princ (cdr range)))
2300 (when ranges
2301 (insert ",")))))
2302 (insert "\n")))
2303 (make-local-variable 'version-control)
2304 (setq version-control 'never)
2305 ;; It has been reported that sometime the modtime on the .newsrc
2306 ;; file seems to be off. We really do want to overwrite it, so
2307 ;; we clear the modtime here before saving. It's a bit odd,
2308 ;; though...
2309 ;; sometimes the modtime clear isn't sufficient. most brute force:
2310 ;; delete the silly thing entirely first. but this fails to provide
2311 ;; such niceties as .newsrc~ creation.
2312 (if gnus-modtime-botch
2313 (delete-file gnus-startup-file)
2314 (clear-visited-file-modtime))
2315 (run-hooks 'gnus-save-standard-newsrc-hook)
2316 (save-buffer)
2317 (kill-buffer (current-buffer)))))
2318
2319\f
2320;;;
2321;;; Slave functions.
2322;;;
2323
2324(defun gnus-slave-save-newsrc ()
2325 (save-excursion
2326 (set-buffer gnus-dribble-buffer)
2327 (let ((slave-name
2328 (make-temp-name (concat gnus-current-startup-file "-slave-")))
2329 (modes (ignore-errors
2330 (file-modes (concat gnus-current-startup-file ".eld")))))
2331 (gnus-write-buffer slave-name)
2332 (when modes
2333 (set-file-modes slave-name modes)))))
2334
2335(defun gnus-master-read-slave-newsrc ()
2336 (let ((slave-files
2337 (directory-files
2338 (file-name-directory gnus-current-startup-file)
2339 t (concat
2340 "^" (regexp-quote
2341 (concat
2342 (file-name-nondirectory gnus-current-startup-file)
2343 "-slave-")))
2344 t))
2345 file)
2346 (if (not slave-files)
2347 () ; There are no slave files to read.
2348 (gnus-message 7 "Reading slave newsrcs...")
2349 (save-excursion
2350 (set-buffer (get-buffer-create " *gnus slave*"))
2351 (buffer-disable-undo (current-buffer))
2352 (setq slave-files
2353 (sort (mapcar (lambda (file)
2354 (list (nth 5 (file-attributes file)) file))
2355 slave-files)
2356 (lambda (f1 f2)
2357 (or (< (caar f1) (caar f2))
2358 (< (nth 1 (car f1)) (nth 1 (car f2)))))))
2359 (while slave-files
2360 (erase-buffer)
2361 (setq file (nth 1 (car slave-files)))
2362 (insert-file-contents file)
2363 (when (condition-case ()
2364 (progn
2365 (eval-buffer (current-buffer))
2366 t)
2367 (error
2368 (gnus-error 3.2 "Possible error in %s" file)
2369 nil))
2370 (unless gnus-slave ; Slaves shouldn't delete these files.
2371 (ignore-errors
2372 (delete-file file))))
2373 (setq slave-files (cdr slave-files))))
2374 (gnus-dribble-touch)
2375 (gnus-message 7 "Reading slave newsrcs...done"))))
2376
2377\f
2378;;;
2379;;; Group description.
2380;;;
2381
2382(defun gnus-read-all-descriptions-files ()
2383 (let ((methods (cons gnus-select-method
2384 (nconc
2385 (when (gnus-archive-server-wanted-p)
2386 (list "archive"))
2387 gnus-secondary-select-methods))))
2388 (while methods
2389 (gnus-read-descriptions-file (car methods))
2390 (setq methods (cdr methods)))
2391 t))
2392
2393(defun gnus-read-descriptions-file (&optional method)
2394 (let ((method (or method gnus-select-method))
2395 group)
2396 (when (stringp method)
2397 (setq method (gnus-server-to-method method)))
2398 ;; We create the hashtable whether we manage to read the desc file
2399 ;; to avoid trying to re-read after a failed read.
2400 (unless gnus-description-hashtb
2401 (setq gnus-description-hashtb
2402 (gnus-make-hashtable (length gnus-active-hashtb))))
2403 ;; Mark this method's desc file as read.
2404 (gnus-sethash (gnus-group-prefixed-name "" method) "Has read"
2405 gnus-description-hashtb)
2406
2407 (gnus-message 5 "Reading descriptions file via %s..." (car method))
2408 (cond
2409 ((not (gnus-check-server method))
2410 (gnus-message 1 "Couldn't open server")
2411 nil)
2412 ((not (gnus-request-list-newsgroups method))
2413 (gnus-message 1 "Couldn't read newsgroups descriptions")
2414 nil)
2415 (t
2416 (save-excursion
2417 (save-restriction
2418 (set-buffer nntp-server-buffer)
2419 (goto-char (point-min))
2420 (when (or (search-forward "\n.\n" nil t)
2421 (goto-char (point-max)))
2422 (beginning-of-line)
2423 (narrow-to-region (point-min) (point)))
2424 ;; If these are groups from a foreign select method, we insert the
2425 ;; group prefix in front of the group names.
2426 (and method (not (inline
2427 (gnus-server-equal
2428 (gnus-server-get-method nil method)
2429 (gnus-server-get-method
2430 nil gnus-select-method))))
2431 (let ((prefix (gnus-group-prefixed-name "" method)))
2432 (goto-char (point-min))
2433 (while (and (not (eobp))
2434 (progn (insert prefix)
2435 (zerop (forward-line 1)))))))
2436 (goto-char (point-min))
2437 (while (not (eobp))
2438 ;; If we get an error, we set group to 0, which is not a
2439 ;; symbol...
2440 (setq group
2441 (condition-case ()
2442 (let ((obarray gnus-description-hashtb))
2443 ;; Group is set to a symbol interned in this
2444 ;; hash table.
2445 (read nntp-server-buffer))
2446 (error 0)))
2447 (skip-chars-forward " \t")
2448 ;; ... which leads to this line being effectively ignored.
2449 (when (symbolp group)
0791fc56
KH
2450 (let ((str (buffer-substring
2451 (point) (progn (end-of-line) (point))))
2452 (coding
2453 (and enable-multibyte-characters
2454 (gnus-mule-get-coding-system (symbol-name group)))))
2455 (if coding
2456 (setq str (decode-coding-string str (car coding))))
2457 (set group str)))
eec82323
LMI
2458 (forward-line 1))))
2459 (gnus-message 5 "Reading descriptions file...done")
2460 t))))
2461
2462(defun gnus-group-get-description (group)
2463 "Get the description of a group by sending XGTITLE to the server."
2464 (when (gnus-request-group-description group)
2465 (save-excursion
2466 (set-buffer nntp-server-buffer)
2467 (goto-char (point-min))
2468 (when (looking-at "[^ \t]+[ \t]+\\(.*\\)")
2469 (match-string 1)))))
2470
2471;;;###autoload
2472(defun gnus-declare-backend (name &rest abilities)
2473 "Declare backend NAME with ABILITIES as a Gnus backend."
2474 (setq gnus-valid-select-methods
2475 (nconc gnus-valid-select-methods
2476 (list (apply 'list name abilities)))))
2477
2478(defun gnus-set-default-directory ()
2479 "Set the default directory in the current buffer to `gnus-default-directory'.
2480If this variable is nil, don't do anything."
2481 (setq default-directory
2482 (if (and gnus-default-directory
2483 (file-exists-p gnus-default-directory))
2484 (file-name-as-directory (expand-file-name gnus-default-directory))
2485 default-directory)))
2486
2487(provide 'gnus-start)
2488
2489;;; gnus-start.el ends here