Merge from emacs-23
[bpt/emacs.git] / lisp / gnus / gnus-start.el
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eec82323 1;;; gnus-start.el --- startup functions for Gnus
e84b4b86
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2
3;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
5df4f04c 4;; 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
eec82323 5
6748645f 6;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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7;; Keywords: news
8
9;; This file is part of GNU Emacs.
10
5e809f55 11;; GNU Emacs is free software: you can redistribute it and/or modify
eec82323 12;; it under the terms of the GNU General Public License as published by
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13;; the Free Software Foundation, either version 3 of the License, or
14;; (at your option) any later version.
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15
16;; GNU Emacs is distributed in the hope that it will be useful,
17;; but WITHOUT ANY WARRANTY; without even the implied warranty of
de768922 18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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19;; GNU General Public License for more details.
20
21;; You should have received a copy of the GNU General Public License
5e809f55 22;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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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)
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34(autoload 'message-make-date "message")
35(autoload 'gnus-agent-read-servers-validate "gnus-agent")
54506618 36(autoload 'gnus-agent-save-local "gnus-agent")
23f87bed 37(autoload 'gnus-agent-possibly-alter-active "gnus-agent")
54506618 38
bf247b6e 39(eval-when-compile
9efa445f 40 (require 'cl))
54506618 41
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42(defvar gnus-agent-covered-methods)
43(defvar gnus-agent-file-loading-local)
44(defvar gnus-agent-file-loading-cache)
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45
46(defcustom gnus-startup-file (nnheader-concat gnus-home-directory ".newsrc")
47 "Your `.newsrc' file.
48`.newsrc-SERVER' will be used instead if that exists."
49 :group 'gnus-start
50 :type 'file)
51
23f87bed 52(defcustom gnus-backup-startup-file 'never
bf46b4d4 53 "Control use of version numbers for backups of `gnus-startup-file'.
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54This variable takes the same values as the `version-control'
55variable."
bf247b6e 56 :version "22.1"
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57 :group 'gnus-start
58 :type '(choice (const :tag "Never" never)
59 (const :tag "If existing" nil)
60 (other :tag "Always" t)))
61
62(defcustom gnus-save-startup-file-via-temp-buffer t
63 "Whether to write the startup file contents to a buffer then save
64the buffer or write directly to the file. The buffer is faster
65because all of the contents are written at once. The direct write
66uses considerably less memory."
bf247b6e 67 :version "22.1"
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68 :group 'gnus-start
69 :type '(choice (const :tag "Write via buffer" t)
70 (const :tag "Write directly to file" nil)))
71
eec82323 72(defcustom gnus-init-file (nnheader-concat gnus-home-directory ".gnus")
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73 "Your Gnus Emacs-Lisp startup file name.
74If a file with the `.el' or `.elc' suffixes exists, it will be read instead."
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75 :group 'gnus-start
76 :type 'file)
77
78(defcustom gnus-site-init-file
cb75201b 79 (condition-case nil
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80 (concat (file-name-directory
81 (directory-file-name installation-directory))
82 "site-lisp/gnus-init")
cb75201b 83 (error nil))
16409b0b 84 "The site-wide Gnus Emacs-Lisp startup file name, or nil if none.
83be5c8c 85If a file with the `.el' or `.elc' suffixes exists, it will be read instead."
eec82323 86 :group 'gnus-start
83be5c8c 87 :type '(choice file (const nil)))
eec82323 88
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89(defcustom gnus-use-dribble-file t
90 "*Non-nil means that Gnus will use a dribble file to store user updates.
91If Emacs should crash without saving the .newsrc files, complete
92information can be restored from the dribble file."
93 :group 'gnus-dribble-file
94 :type 'boolean)
95
96(defcustom gnus-dribble-directory nil
97 "*The directory where dribble files will be saved.
98If this variable is nil, the directory where the .newsrc files are
99saved will be used."
100 :group 'gnus-dribble-file
101 :type '(choice directory (const nil)))
102
a8151ef7 103(defcustom gnus-check-new-newsgroups 'ask-server
6748645f 104 "*Non-nil means that Gnus will run `gnus-find-new-newsgroups' at startup.
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105This normally finds new newsgroups by comparing the active groups the
106servers have already reported with those Gnus already knows, either alive
107or killed.
108
6748645f 109When any of the following are true, `gnus-find-new-newsgroups' will instead
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110ask the servers (primary, secondary, and archive servers) to list new
111groups since the last time it checked:
112 1. This variable is `ask-server'.
113 2. This variable is a list of select methods (see below).
114 3. `gnus-read-active-file' is nil or `some'.
6748645f 115 4. A prefix argument is given to `gnus-find-new-newsgroups' interactively.
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116
117Thus, if this variable is `ask-server' or a list of select methods or
118`gnus-read-active-file' is nil or `some', then the killed list is no
119longer necessary, so you could safely set `gnus-save-killed-list' to nil.
120
121This variable can be a list of select methods which Gnus will query with
122the `ask-server' method in addition to the primary, secondary, and archive
123servers.
124
125Eg.
126 (setq gnus-check-new-newsgroups
127 '((nntp \"some.server\") (nntp \"other.server\")))
128
129If this variable is nil, then you have to tell Gnus explicitly to
130check for new newsgroups with \\<gnus-group-mode-map>\\[gnus-find-new-newsgroups]."
131 :group 'gnus-start
132 :type '(choice (const :tag "no" nil)
133 (const :tag "by brute force" t)
134 (const :tag "ask servers" ask-server)
135 (repeat :menu-tag "ask additional servers"
136 :tag "ask additional servers"
137 :value ((nntp ""))
138 (sexp :format "%v"))))
139
140(defcustom gnus-check-bogus-newsgroups nil
141 "*Non-nil means that Gnus will check and remove bogus newsgroup at startup.
142If this variable is nil, then you have to tell Gnus explicitly to
143check for bogus newsgroups with \\<gnus-group-mode-map>\\[gnus-group-check-bogus-groups]."
144 :group 'gnus-start-server
145 :type 'boolean)
146
a8151ef7 147(defcustom gnus-read-active-file 'some
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148 "*Non-nil means that Gnus will read the entire active file at startup.
149If this variable is nil, Gnus will only know about the groups in your
150`.newsrc' file.
151
152If this variable is `some', Gnus will try to only read the relevant
153parts of the active file from the server. Not all servers support
154this, and it might be quite slow with other servers, but this should
155generally be faster than both the t and nil value.
156
157If you set this variable to nil or `some', you probably still want to
158be told about new newsgroups that arrive. To do that, set
159`gnus-check-new-newsgroups' to `ask-server'. This may not work
160properly with all servers."
161 :group 'gnus-start-server
162 :type '(choice (const nil)
163 (const some)
164 (const t)))
165
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166(defconst gnus-level-subscribed 5
167 "Groups with levels less than or equal to this variable are subscribed.")
eec82323 168
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169(defconst gnus-level-unsubscribed 7
170 "Groups with levels less than or equal to this variable are unsubscribed.
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171
172Groups with levels less than `gnus-level-subscribed', which
173should be less than this variable, are subscribed. Groups with
174levels from `gnus-level-subscribed' (exclusive) upto this
175variable (inclusive) are unsubscribed. See also
e1b9db1a 176`gnus-level-zombie', `gnus-level-killed' and the Info node `(gnus)Group
60b0b668 177Levels' for details.")
eec82323 178
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179(defconst gnus-level-zombie 8
180 "Groups with this level are zombie groups.")
eec82323 181
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182(defconst gnus-level-killed 9
183 "Groups with this level are killed.")
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184
185(defcustom gnus-level-default-subscribed 3
186 "*New subscribed groups will be subscribed at this level."
187 :group 'gnus-group-levels
188 :type 'integer)
189
190(defcustom gnus-level-default-unsubscribed 6
191 "*New unsubscribed groups will be unsubscribed at this level."
192 :group 'gnus-group-levels
193 :type 'integer)
194
195(defcustom gnus-activate-level (1+ gnus-level-subscribed)
196 "*Groups higher than this level won't be activated on startup.
197Setting this variable to something low might save lots of time when
198you have many groups that you aren't interested in."
199 :group 'gnus-group-levels
200 :type 'integer)
201
202(defcustom gnus-activate-foreign-newsgroups 4
203 "*If nil, Gnus will not check foreign newsgroups at startup.
204If it is non-nil, it should be a number between one and nine. Foreign
205newsgroups that have a level lower or equal to this number will be
206activated on startup. For instance, if you want to active all
207subscribed newsgroups, but not the rest, you'd set this variable to
208`gnus-level-subscribed'.
209
210If you subscribe to lots of newsgroups from different servers, startup
211might take a while. By setting this variable to nil, you'll save time,
212but you won't be told how many unread articles there are in the
213groups."
214 :group 'gnus-group-levels
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215 :type '(choice integer
216 (const :tag "none" nil)))
eec82323 217
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218(defcustom gnus-read-newsrc-file t
219 "*Non-nil means that Gnus will read the `.newsrc' file.
220Gnus always reads its own startup file, which is called
221\".newsrc.eld\". The file called \".newsrc\" is in a format that can
222be readily understood by other newsreaders. If you don't plan on
223using other newsreaders, set this variable to nil to save some time on
224entry."
0e5f03c1 225 :version "21.1"
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226 :group 'gnus-newsrc
227 :type 'boolean)
228
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229(defcustom gnus-save-newsrc-file t
230 "*Non-nil means that Gnus will save the `.newsrc' file.
231Gnus always saves its own startup file, which is called
232\".newsrc.eld\". The file called \".newsrc\" is in a format that can
233be readily understood by other newsreaders. If you don't plan on
234using other newsreaders, set this variable to nil to save some time on
235exit."
236 :group 'gnus-newsrc
237 :type 'boolean)
238
239(defcustom gnus-save-killed-list t
240 "*If non-nil, save the list of killed groups to the startup file.
241If you set this variable to nil, you'll save both time (when starting
242and quitting) and space (both memory and disk), but it will also mean
243that Gnus has no record of which groups are new and which are old, so
244the automatic new newsgroups subscription methods become meaningless.
245
246You should always set `gnus-check-new-newsgroups' to `ask-server' or
247nil if you set this variable to nil.
248
249This variable can also be a regexp. In that case, all groups that do
250not match this regexp will be removed before saving the list."
251 :group 'gnus-newsrc
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252 :type '(radio (sexp :format "Non-nil\n"
253 :match (lambda (widget value)
254 (and value (not (stringp value))))
255 :value t)
256 (const nil)
ad136a7c 257 regexp))
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258
259(defcustom gnus-ignored-newsgroups
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260 (mapconcat 'identity
261 '("^to\\." ; not "real" groups
23f87bed 262 "^[0-9. \t]+\\( \\|$\\)" ; all digits in name
bdaa75c7 263 "^[\"][\"#'()]" ; bogus characters
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264 )
265 "\\|")
6748645f 266 "*A regexp to match uninteresting newsgroups in the active file.
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267Any lines in the active file matching this regular expression are
268removed from the newsgroup list before anything else is done to it,
269thus making them effectively non-existent."
270 :group 'gnus-group-new
271 :type 'regexp)
272
273(defcustom gnus-subscribe-newsgroup-method 'gnus-subscribe-zombies
23f87bed 274 "*Function(s) called with a group name when new group is detected.
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275A few pre-made functions are supplied: `gnus-subscribe-randomly'
276inserts new groups at the beginning of the list of groups;
277`gnus-subscribe-alphabetically' inserts new groups in strict
278alphabetic order; `gnus-subscribe-hierarchically' inserts new groups
279in hierarchical newsgroup order; `gnus-subscribe-interactively' asks
280for your decision; `gnus-subscribe-killed' kills all new groups;
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281`gnus-subscribe-zombies' will make all new groups into zombies;
282`gnus-subscribe-topics' will enter groups into the topics that
283claim them."
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284 :group 'gnus-group-new
285 :type '(radio (function-item gnus-subscribe-randomly)
286 (function-item gnus-subscribe-alphabetically)
287 (function-item gnus-subscribe-hierarchically)
288 (function-item gnus-subscribe-interactively)
289 (function-item gnus-subscribe-killed)
290 (function-item gnus-subscribe-zombies)
16409b0b 291 (function-item gnus-subscribe-topics)
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292 function
293 (repeat function)))
294
295(defcustom gnus-subscribe-newsgroup-hooks nil
296 "*Hooks run after you subscribe to a new group.
297The hooks will be called with new group's name as argument."
bf247b6e 298 :version "22.1"
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299 :group 'gnus-group-new
300 :type 'hook)
eec82323 301
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302(defcustom gnus-subscribe-options-newsgroup-method
303 'gnus-subscribe-alphabetically
23f87bed 304 "*Function(s) called to subscribe newsgroups mentioned on \"options -n\" lines.
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305If, for instance, you want to subscribe to all newsgroups in the
306\"no\" and \"alt\" hierarchies, you'd put the following in your
307.newsrc file:
308
309options -n no.all alt.all
310
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311Gnus will then subscribe all new newsgroups in these hierarchies
312with the subscription method in this variable."
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313 :group 'gnus-group-new
314 :type '(radio (function-item gnus-subscribe-randomly)
315 (function-item gnus-subscribe-alphabetically)
316 (function-item gnus-subscribe-hierarchically)
317 (function-item gnus-subscribe-interactively)
318 (function-item gnus-subscribe-killed)
319 (function-item gnus-subscribe-zombies)
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320 (function-item gnus-subscribe-topics)
321 function
322 (repeat function)))
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323
324(defcustom gnus-subscribe-hierarchical-interactive nil
325 "*If non-nil, Gnus will offer to subscribe hierarchically.
326When a new hierarchy appears, Gnus will ask the user:
327
328'alt.binaries': Do you want to subscribe to this hierarchy? ([d]ys):
329
330If the user pressed `d', Gnus will descend the hierarchy, `y' will
331subscribe to all newsgroups in the hierarchy and `s' will skip this
332hierarchy in its entirety."
333 :group 'gnus-group-new
334 :type 'boolean)
335
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336(defcustom gnus-auto-subscribed-categories '(mail post-mail)
337 "*New groups from methods of these categories will be subscribed automatically.
338Note that this variable only deals with new groups. It has no
339effect whatsoever on old groups. The default is to automatically
340subscribe all groups from mail-like backends."
341 :version "24.1"
342 :group 'gnus-group-new
343 :type '(repeat symbol))
344
eec82323 345(defcustom gnus-auto-subscribed-groups
7410c270 346 "^nnml\\|^nnfolder\\|^nnmbox\\|^nnmh\\|^nnbabyl\\|^nnmaildir\\|^nnimap"
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347 "*All new groups that match this regexp will be subscribed automatically.
348Note that this variable only deals with new groups. It has no effect
349whatsoever on old groups.
350
351New groups that match this regexp will not be handled by
352`gnus-subscribe-newsgroup-method'. Instead, they will
353be subscribed using `gnus-subscribe-options-newsgroup-method'."
354 :group 'gnus-group-new
355 :type 'regexp)
356
357(defcustom gnus-options-subscribe nil
358 "*All new groups matching this regexp will be subscribed unconditionally.
de768922 359Note that this variable deals only with new newsgroups. This variable
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360does not affect old newsgroups.
361
362New groups that match this regexp will not be handled by
363`gnus-subscribe-newsgroup-method'. Instead, they will
364be subscribed using `gnus-subscribe-options-newsgroup-method'."
365 :group 'gnus-group-new
366 :type '(choice regexp
367 (const :tag "none" nil)))
368
369(defcustom gnus-options-not-subscribe nil
370 "*All new groups matching this regexp will be ignored.
de768922 371Note that this variable deals only with new newsgroups. This variable
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372does not affect old (already subscribed) newsgroups."
373 :group 'gnus-group-new
374 :type '(choice regexp
375 (const :tag "none" nil)))
376
377(defcustom gnus-modtime-botch nil
378 "*Non-nil means .newsrc should be deleted prior to save.
379Its use is due to the bogus appearance that .newsrc was modified on
380disc."
381 :group 'gnus-newsrc
382 :type 'boolean)
383
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384(defcustom gnus-use-backend-marks nil
385 "If non-nil, Gnus will store and retrieve marks from the backends.
386This means that marks will be stored both in .newsrc.eld and in
387the backend, and will slow operation down somewhat."
388 :group 'gnus-newsrc
389 :type 'boolean)
390
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391(defcustom gnus-check-bogus-groups-hook nil
392 "A hook run after removing bogus groups."
393 :group 'gnus-start-server
394 :type 'hook)
395
396(defcustom gnus-startup-hook nil
397 "A hook called at startup.
398This hook is called after Gnus is connected to the NNTP server."
399 :group 'gnus-start
400 :type 'hook)
401
6748645f 402(defcustom gnus-before-startup-hook nil
e3e955fe 403 "A hook called before startup.
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404This hook is called as the first thing when Gnus is started."
405 :group 'gnus-start
406 :type 'hook)
407
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408(defcustom gnus-started-hook nil
409 "A hook called as the last thing after startup."
410 :group 'gnus-start
411 :type 'hook)
412
b1ae92ba 413(defcustom gnus-setup-news-hook nil
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414 "A hook after reading the .newsrc file, but before generating the buffer."
415 :group 'gnus-start
416 :type 'hook)
417
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418(defcustom gnus-get-top-new-news-hook nil
419 "A hook run just before Gnus checks for new news globally."
bf247b6e 420 :version "22.1"
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421 :group 'gnus-group-new
422 :type 'hook)
423
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424(defcustom gnus-get-new-news-hook nil
425 "A hook run just before Gnus checks for new news."
426 :group 'gnus-group-new
427 :type 'hook)
428
429(defcustom gnus-after-getting-new-news-hook
b1ae92ba 430 '(gnus-display-time-event-handler)
16409b0b 431 "*A hook run after Gnus checks for new news when Gnus is already running."
3431395c 432 :version "24.1"
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433 :group 'gnus-group-new
434 :type 'hook)
435
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436(defcustom gnus-read-newsrc-el-hook nil
437 "A hook called after reading the newsrc.eld? file."
438 :group 'gnus-newsrc
439 :type 'hook)
440
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441(defcustom gnus-save-newsrc-hook nil
442 "A hook called before saving any of the newsrc files."
443 :group 'gnus-newsrc
444 :type 'hook)
445
446(defcustom gnus-save-quick-newsrc-hook nil
447 "A hook called just before saving the quick newsrc file.
448Can be used to turn version control on or off."
449 :group 'gnus-newsrc
450 :type 'hook)
451
452(defcustom gnus-save-standard-newsrc-hook nil
453 "A hook called just before saving the standard newsrc file.
454Can be used to turn version control on or off."
455 :group 'gnus-newsrc
456 :type 'hook)
457
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458(defcustom gnus-group-mode-hook nil
459 "Hook for Gnus group mode."
460 :group 'gnus-group-various
461 :options '(gnus-topic-mode)
462 :type 'hook)
463
6748645f 464(defcustom gnus-always-read-dribble-file nil
16409b0b 465 "Unconditionally read the dribble file."
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466 :group 'gnus-newsrc
467 :type 'boolean)
468
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469;;; Internal variables
470
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471;; Fixme: deal with old emacs-mule when mm-universal-coding-system is
472;; utf-8-emacs.
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473(defvar gnus-ding-file-coding-system mm-universal-coding-system
474 "Coding system for ding file.")
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475
476(defvar gnus-newsrc-file-version nil)
477(defvar gnus-override-subscribe-method nil)
478(defvar gnus-dribble-buffer nil)
479(defvar gnus-newsrc-options nil
480 "Options line in the .newsrc file.")
481
482(defvar gnus-newsrc-options-n nil
483 "List of regexps representing groups to be subscribed/ignored unconditionally.")
484
485(defvar gnus-newsrc-last-checked-date nil
486 "Date Gnus last asked server for new newsgroups.")
487
488(defvar gnus-current-startup-file nil
489 "Startup file for the current host.")
490
491;; Byte-compiler warning.
492(defvar gnus-group-line-format)
493
494;; Suggested by Brian Edmonds <edmonds@cs.ubc.ca>.
495(defvar gnus-init-inhibit nil)
496(defun gnus-read-init-file (&optional inhibit-next)
497 ;; Don't load .gnus if the -q option was used.
498 (when init-file-user
499 (if gnus-init-inhibit
500 (setq gnus-init-inhibit nil)
501 (setq gnus-init-inhibit inhibit-next)
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502 (dolist (file (list gnus-site-init-file gnus-init-file))
503 (when (and file
504 (locate-library file))
505 (if (or debug-on-error debug-on-quit)
506 (load file nil t)
507 (condition-case var
508 (load file nil t)
509 (error
23f87bed 510 (error "Error in %s: %s" file (cadr var))))))))))
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511
512;; For subscribing new newsgroup
513
514(defun gnus-subscribe-hierarchical-interactive (groups)
515 (let ((groups (sort groups 'string<))
01c52d31 516 prefixes prefix start ans group starts real-group)
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517 (while groups
518 (setq prefixes (list "^"))
519 (while (and groups prefixes)
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520 (while (not (string-match (car prefixes)
521 (gnus-group-real-name (car groups))))
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522 (setq prefixes (cdr prefixes)))
523 (setq prefix (car prefixes))
524 (setq start (1- (length prefix)))
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525 (if (and (string-match "[^\\.]\\." (gnus-group-real-name (car groups))
526 start)
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527 (cdr groups)
528 (setq prefix
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529 (concat "^" (substring
530 (gnus-group-real-name (car groups))
531 0 (match-end 0))))
532 (string-match prefix (gnus-group-real-name (cadr groups))))
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533 (progn
534 (push prefix prefixes)
535 (message "Descend hierarchy %s? ([y]nsq): "
536 (substring prefix 1 (1- (length prefix))))
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537 (while (not (memq (setq ans (read-char-exclusive))
538 '(?y ?\n ?\r ?n ?s ?q)))
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539 (ding)
540 (message "Descend hierarchy %s? ([y]nsq): "
541 (substring prefix 1 (1- (length prefix)))))
542 (cond ((= ans ?n)
543 (while (and groups
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544 (setq group (car groups)
545 real-group (gnus-group-real-name group))
546 (string-match prefix real-group))
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547 (push group gnus-killed-list)
548 (gnus-sethash group group gnus-killed-hashtb)
549 (setq groups (cdr groups)))
550 (setq starts (cdr starts)))
551 ((= ans ?s)
552 (while (and groups
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553 (setq group (car groups)
554 real-group (gnus-group-real-name group))
555 (string-match prefix real-group))
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556 (gnus-sethash group group gnus-killed-hashtb)
557 (gnus-subscribe-alphabetically (car groups))
558 (setq groups (cdr groups)))
559 (setq starts (cdr starts)))
560 ((= ans ?q)
561 (while groups
562 (setq group (car groups))
563 (push group gnus-killed-list)
564 (gnus-sethash group group gnus-killed-hashtb)
565 (setq groups (cdr groups))))
566 (t nil)))
567 (message "Subscribe %s? ([n]yq)" (car groups))
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568 (while (not (memq (setq ans (read-char-exclusive))
569 '(?y ?\n ?\r ?q ?n)))
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570 (ding)
571 (message "Subscribe %s? ([n]yq)" (car groups)))
572 (setq group (car groups))
573 (cond ((= ans ?y)
574 (gnus-subscribe-alphabetically (car groups))
575 (gnus-sethash group group gnus-killed-hashtb))
576 ((= ans ?q)
577 (while groups
578 (setq group (car groups))
579 (push group gnus-killed-list)
580 (gnus-sethash group group gnus-killed-hashtb)
581 (setq groups (cdr groups))))
582 (t
583 (push group gnus-killed-list)
584 (gnus-sethash group group gnus-killed-hashtb)))
585 (setq groups (cdr groups)))))))
586
587(defun gnus-subscribe-randomly (newsgroup)
588 "Subscribe new NEWSGROUP by making it the first newsgroup."
589 (gnus-subscribe-newsgroup newsgroup))
590
591(defun gnus-subscribe-alphabetically (newgroup)
23f87bed 592 "Subscribe new NEWGROUP and insert it in alphabetical order."
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593 (let ((groups (cdr gnus-newsrc-alist))
594 before)
595 (while (and (not before) groups)
596 (if (string< newgroup (caar groups))
597 (setq before (caar groups))
598 (setq groups (cdr groups))))
599 (gnus-subscribe-newsgroup newgroup before)))
600
601(defun gnus-subscribe-hierarchically (newgroup)
23f87bed 602 "Subscribe new NEWGROUP and insert it in hierarchical newsgroup order."
eec82323 603 ;; Basic ideas by mike-w@cs.aukuni.ac.nz (Mike Williams)
20a673b2 604 (with-current-buffer (nnheader-find-file-noselect gnus-current-startup-file)
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605 (prog1
606 (let ((groupkey newgroup) before)
607 (while (and (not before) groupkey)
608 (goto-char (point-min))
609 (let ((groupkey-re
610 (concat "^\\(" (regexp-quote groupkey) ".*\\)[!:]")))
611 (while (and (re-search-forward groupkey-re nil t)
612 (progn
613 (setq before (match-string 1))
614 (string< before newgroup)))))
615 ;; Remove tail of newsgroup name (eg. a.b.c -> a.b)
616 (setq groupkey
617 (when (string-match "^\\(.*\\)\\.[^.]+$" groupkey)
618 (substring groupkey (match-beginning 1) (match-end 1)))))
619 (gnus-subscribe-newsgroup newgroup before))
620 (kill-buffer (current-buffer)))))
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621
622(defun gnus-subscribe-interactively (group)
623 "Subscribe the new GROUP interactively.
624It is inserted in hierarchical newsgroup order if subscribed. If not,
625it is killed."
66841476 626 (if (gnus-y-or-n-p (format "Subscribe new newsgroup %s? " group))
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627 (gnus-subscribe-hierarchically group)
628 (push group gnus-killed-list)))
629
630(defun gnus-subscribe-zombies (group)
631 "Make the new GROUP into a zombie group."
632 (push group gnus-zombie-list))
633
634(defun gnus-subscribe-killed (group)
635 "Make the new GROUP a killed group."
636 (push group gnus-killed-list))
637
638(defun gnus-subscribe-newsgroup (newsgroup &optional next)
639 "Subscribe new NEWSGROUP.
de768922 640If NEXT is non-nil, it is inserted before NEXT. Otherwise it is made
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641the first newsgroup."
642 (save-excursion
643 (goto-char (point-min))
644 ;; We subscribe the group by changing its level to `subscribed'.
645 (gnus-group-change-level
646 newsgroup gnus-level-default-subscribed
01c52d31 647 gnus-level-killed (gnus-group-entry (or next "dummy.group")))
549c9aed 648 (gnus-request-update-group-status newsgroup 'subscribe)
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649 (gnus-message 5 "Subscribe newsgroup: %s" newsgroup)
650 (run-hook-with-args 'gnus-subscribe-newsgroup-hooks newsgroup)
651 t))
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652
653(defun gnus-read-active-file-p ()
654 "Say whether the active file has been read from `gnus-select-method'."
655 (memq gnus-select-method gnus-have-read-active-file))
656
657;;; General various misc type functions.
658
659;; Silence byte-compiler.
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660(defvar gnus-current-headers)
661(defvar gnus-thread-indent-array)
662(defvar gnus-newsgroup-name)
663(defvar gnus-newsgroup-headers)
664(defvar gnus-group-list-mode)
665(defvar gnus-group-mark-positions)
666(defvar gnus-newsgroup-data)
667(defvar gnus-newsgroup-unreads)
668(defvar nnoo-state-alist)
669(defvar gnus-current-select-method)
670(defvar mail-sources)
671(defvar nnmail-scan-directory-mail-source-once)
672(defvar nnmail-split-history)
673(defvar nnmail-spool-file)
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674
675(defun gnus-close-all-servers ()
676 "Close all servers."
677 (interactive)
678 (dolist (server gnus-opened-servers)
679 (gnus-close-server (car server))))
6748645f 680
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681(defun gnus-clear-system ()
682 "Clear all variables and buffers."
683 ;; Clear Gnus variables.
23f87bed 684 (let ((variables (remove 'gnus-format-specs gnus-variable-list)))
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685 (while variables
686 (set (car variables) nil)
687 (setq variables (cdr variables))))
688 ;; Clear other internal variables.
689 (setq gnus-list-of-killed-groups nil
690 gnus-have-read-active-file nil
23f87bed 691 gnus-agent-covered-methods nil
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692 gnus-agent-file-loading-local nil
693 gnus-agent-file-loading-cache nil
23f87bed 694 gnus-server-method-cache nil
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695 gnus-newsrc-alist nil
696 gnus-newsrc-hashtb nil
697 gnus-killed-list nil
698 gnus-zombie-list nil
699 gnus-killed-hashtb nil
700 gnus-active-hashtb nil
701 gnus-moderated-hashtb nil
702 gnus-description-hashtb nil
703 gnus-current-headers nil
704 gnus-thread-indent-array nil
705 gnus-newsgroup-headers nil
706 gnus-newsgroup-name nil
707 gnus-server-alist nil
708 gnus-group-list-mode nil
709 gnus-opened-servers nil
710 gnus-group-mark-positions nil
711 gnus-newsgroup-data nil
712 gnus-newsgroup-unreads nil
713 nnoo-state-alist nil
6748645f 714 gnus-current-select-method nil
16409b0b 715 nnmail-split-history nil
0617bb00 716 gnus-extended-servers nil
6748645f 717 gnus-ephemeral-servers nil)
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718 (gnus-shutdown 'gnus)
719 ;; Kill the startup file.
720 (and gnus-current-startup-file
721 (get-file-buffer gnus-current-startup-file)
722 (kill-buffer (get-file-buffer gnus-current-startup-file)))
723 ;; Clear the dribble buffer.
724 (gnus-dribble-clear)
725 ;; Kill global KILL file buffer.
726 (when (get-file-buffer (gnus-newsgroup-kill-file nil))
727 (kill-buffer (get-file-buffer (gnus-newsgroup-kill-file nil))))
728 (gnus-kill-buffer nntp-server-buffer)
729 ;; Kill Gnus buffers.
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730 (dolist (buffer (gnus-buffers))
731 (gnus-kill-buffer buffer))
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732 ;; Remove Gnus frames.
733 (gnus-kill-gnus-frames))
734
735(defun gnus-no-server-1 (&optional arg slave)
736 "Read network news.
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737If ARG is a positive number, Gnus will use that as the startup
738level. If ARG is nil, Gnus will be started at level 2
739\(`gnus-level-default-subscribed' minus one). If ARG is non-nil
740and not a positive number, Gnus will prompt the user for the name
741of an NNTP server to use. As opposed to \\[gnus], this command
742will not connect to the local server."
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743 (interactive "P")
744 (let ((val (or arg (1- gnus-level-default-subscribed))))
745 (gnus val t slave)
746 (make-local-variable 'gnus-group-use-permanent-levels)
747 (setq gnus-group-use-permanent-levels val)))
748
749(defun gnus-1 (&optional arg dont-connect slave)
750 "Read network news.
751If ARG is non-nil and a positive number, Gnus will use that as the
de768922 752startup level. If ARG is non-nil and not a positive number, Gnus will
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753prompt the user for the name of an NNTP server to use."
754 (interactive "P")
755
6748645f 756 (if (gnus-alive-p)
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757 (progn
758 (switch-to-buffer gnus-group-buffer)
759 (gnus-group-get-new-news
760 (and (numberp arg)
761 (> arg 0)
762 (max (car gnus-group-list-mode) arg))))
763
eec82323 764 (gnus-clear-system)
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765 (gnus-splash)
766 (gnus-run-hooks 'gnus-before-startup-hook)
eec82323 767 (nnheader-init-server-buffer)
eec82323 768 (setq gnus-slave slave)
a8151ef7 769 (gnus-read-init-file)
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770
771 ;; Add "native" to gnus-predefined-server-alist just to have a
772 ;; name for the native select method.
773 (when gnus-select-method
774 (push (cons "native" gnus-select-method)
775 gnus-predefined-server-alist))
c9fc72fa 776
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777 (if gnus-agent
778 (gnus-agentize))
eec82323 779
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780 (let ((level (and (numberp arg) (> arg 0) arg))
781 did-connect)
782 (unwind-protect
783 (progn
784 (unless dont-connect
785 (setq did-connect
786 (gnus-start-news-server (and arg (not level))))))
787 (if (and (not dont-connect)
788 (not did-connect))
7410c270 789 ;; Couldn't connect to the server, so bail out.
eec82323 790 (gnus-group-quit)
6748645f 791 (gnus-run-hooks 'gnus-startup-hook)
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792 ;; Find the current startup file name.
793 (setq gnus-current-startup-file
794 (gnus-make-newsrc-file gnus-startup-file))
795
796 ;; Read the dribble file.
797 (when (or gnus-slave gnus-use-dribble-file)
798 (gnus-dribble-read-file))
799
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800 ;; Do the actual startup.
801 (gnus-setup-news nil level dont-connect)
6748645f 802 (gnus-run-hooks 'gnus-setup-news-hook)
7410c270
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803 (when gnus-agent
804 (gnus-request-create-group "queue" '(nndraft "")))
6748645f 805 (gnus-start-draft-setup)
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806 ;; Generate the group buffer.
807 (gnus-group-list-groups level)
808 (gnus-group-first-unread-group)
809 (gnus-configure-windows 'group)
810 (gnus-group-set-mode-line)
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811 (gnus-run-hooks 'gnus-started-hook))))))
812
813(defun gnus-start-draft-setup ()
814 "Make sure the draft group exists."
4e815860 815 (interactive)
6748645f 816 (gnus-request-create-group "drafts" '(nndraft ""))
01c52d31 817 (unless (gnus-group-entry "nndraft:drafts")
6748645f 818 (let ((gnus-level-default-subscribed 1))
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819 (gnus-subscribe-group "nndraft:drafts" nil '(nndraft "")))
820 (setcar (gnus-group-entry "nndraft:drafts") 0))
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821 (unless (equal (gnus-group-get-parameter "nndraft:drafts" 'gnus-dummy t)
822 '((gnus-draft-mode)))
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823 (gnus-group-set-parameter
824 "nndraft:drafts" 'gnus-dummy '((gnus-draft-mode)))))
eec82323 825
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826\f
827;;;
828;;; Dribble file
829;;;
830
831(defvar gnus-dribble-ignore nil)
832(defvar gnus-dribble-eval-file nil)
833
834(defun gnus-dribble-file-name ()
835 "Return the dribble file for the current .newsrc."
836 (concat
837 (if gnus-dribble-directory
838 (concat (file-name-as-directory gnus-dribble-directory)
839 (file-name-nondirectory gnus-current-startup-file))
840 gnus-current-startup-file)
841 "-dribble"))
842
843(defun gnus-dribble-enter (string)
844 "Enter STRING into the dribble buffer."
845 (when (and (not gnus-dribble-ignore)
846 gnus-dribble-buffer
847 (buffer-name gnus-dribble-buffer))
848 (let ((obuf (current-buffer)))
849 (set-buffer gnus-dribble-buffer)
850 (goto-char (point-max))
851 (insert string "\n")
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852 ;; This has been commented by Josh Huber <huber@alum.wpi.edu>
853 ;; It causes problems with both XEmacs and Emacs 21, and doesn't
854 ;; seem to be of much value. (FIXME: remove this after we make sure
855 ;; it's not needed).
856 ;; (set-window-point (get-buffer-window (current-buffer)) (point-max))
eec82323 857 (bury-buffer gnus-dribble-buffer)
20a673b2 858 (with-current-buffer gnus-group-buffer
6748645f 859 (gnus-group-set-mode-line))
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860 (set-buffer obuf))))
861
862(defun gnus-dribble-touch ()
863 "Touch the dribble buffer."
864 (gnus-dribble-enter ""))
865
866(defun gnus-dribble-read-file ()
867 "Read the dribble file from disk."
868 (let ((dribble-file (gnus-dribble-file-name)))
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869 (unless (file-exists-p (file-name-directory dribble-file))
870 (make-directory (file-name-directory dribble-file) t))
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871 (with-current-buffer (setq gnus-dribble-buffer
872 (gnus-get-buffer-create
873 (file-name-nondirectory dribble-file)))
58090a8d 874 (set (make-local-variable 'file-precious-flag) t)
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875 (erase-buffer)
876 (setq buffer-file-name dribble-file)
877 (auto-save-mode t)
16409b0b 878 (buffer-disable-undo)
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879 (bury-buffer (current-buffer))
880 (set-buffer-modified-p nil)
881 (let ((auto (make-auto-save-file-name))
882 (gnus-dribble-ignore t)
23f87bed 883 (purpose nil)
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884 modes)
885 (when (or (file-exists-p auto) (file-exists-p dribble-file))
886 ;; Load whichever file is newest -- the auto save file
887 ;; or the "real" file.
888 (if (file-newer-than-file-p auto dribble-file)
889 (nnheader-insert-file-contents auto)
890 (nnheader-insert-file-contents dribble-file))
891 (unless (zerop (buffer-size))
892 (set-buffer-modified-p t))
893 ;; Set the file modes to reflect the .newsrc file modes.
894 (save-buffer)
895 (when (and (file-exists-p gnus-current-startup-file)
a8151ef7 896 (file-exists-p dribble-file)
eec82323 897 (setq modes (file-modes gnus-current-startup-file)))
01c52d31 898 (gnus-set-file-modes dribble-file modes))
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899 (goto-char (point-min))
900 (when (search-forward "Gnus was exited on purpose" nil t)
901 (setq purpose t))
eec82323 902 ;; Possibly eval the file later.
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903 (when (or gnus-always-read-dribble-file
904 (gnus-y-or-n-p
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905 (if purpose
906 "Gnus exited on purpose without saving; read auto-save file anyway? "
907 "Gnus auto-save file exists. Do you want to read it? ")))
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908 (setq gnus-dribble-eval-file t)))))))
909
910(defun gnus-dribble-eval-file ()
911 (when gnus-dribble-eval-file
912 (setq gnus-dribble-eval-file nil)
913 (save-excursion
914 (let ((gnus-dribble-ignore t))
915 (set-buffer gnus-dribble-buffer)
916 (eval-buffer (current-buffer))))))
917
918(defun gnus-dribble-delete-file ()
919 (when (file-exists-p (gnus-dribble-file-name))
920 (delete-file (gnus-dribble-file-name)))
921 (when gnus-dribble-buffer
20a673b2 922 (with-current-buffer gnus-dribble-buffer
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923 (let ((auto (make-auto-save-file-name)))
924 (when (file-exists-p auto)
925 (delete-file auto))
926 (erase-buffer)
927 (set-buffer-modified-p nil)))))
928
929(defun gnus-dribble-save ()
930 (when (and gnus-dribble-buffer
931 (buffer-name gnus-dribble-buffer))
20a673b2 932 (with-current-buffer gnus-dribble-buffer
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933 (save-buffer))))
934
935(defun gnus-dribble-clear ()
936 (when (gnus-buffer-exists-p gnus-dribble-buffer)
20a673b2 937 (with-current-buffer gnus-dribble-buffer
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938 (erase-buffer)
939 (set-buffer-modified-p nil)
940 (setq buffer-saved-size (buffer-size)))))
941
942\f
943;;;
944;;; Active & Newsrc File Handling
945;;;
946
947(defun gnus-setup-news (&optional rawfile level dont-connect)
948 "Setup news information.
949If RAWFILE is non-nil, the .newsrc file will also be read.
950If LEVEL is non-nil, the news will be set up at level LEVEL."
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951 (require 'nnmail)
952 (let ((init (not (and gnus-newsrc-alist gnus-active-hashtb (not rawfile))))
953 ;; Binding this variable will inhibit multiple fetchings
954 ;; of the same mail source.
955 (nnmail-fetched-sources (list t)))
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956
957 (when init
958 ;; Clear some variables to re-initialize news information.
959 (setq gnus-newsrc-alist nil
960 gnus-active-hashtb nil)
961 ;; Read the newsrc file and create `gnus-newsrc-hashtb'.
962 (gnus-read-newsrc-file rawfile))
963
6748645f 964 ;; Make sure the archive server is available to all and sundry.
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965 (let ((method (or (and (stringp gnus-message-archive-method)
966 (gnus-server-to-method
967 gnus-message-archive-method))
968 gnus-message-archive-method)))
969 ;; Check whether the archive method is writable.
970 (unless (or (not method)
971 (stringp method)
972 (memq 'respool (assoc (format "%s" (car method))
973 gnus-valid-select-methods)))
974 (setq method "archive")) ;; The default.
975 (when (stringp method)
976 (setq method `(nnfolder
977 ,method
978 (nnfolder-directory
979 ,(nnheader-concat message-directory method))
980 (nnfolder-active-file
981 ,(nnheader-concat message-directory
982 (concat method "/active")))
983 (nnfolder-get-new-mail nil)
984 (nnfolder-inhibit-expiry t))))
985 (if (assoc "archive" gnus-server-alist)
986 (when gnus-update-message-archive-method
987 (if method
988 (setcdr (assoc "archive" gnus-server-alist) method)
989 (setq gnus-server-alist (delq (assoc "archive" gnus-server-alist)
990 gnus-server-alist))))
991 (when method
992 (push (cons "archive" method) gnus-server-alist))))
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993
994 ;; If we don't read the complete active file, we fill in the
995 ;; hashtb here.
996 (when (or (null gnus-read-active-file)
997 (eq gnus-read-active-file 'some))
998 (gnus-update-active-hashtb-from-killed))
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999 (unless gnus-active-hashtb
1000 (setq gnus-active-hashtb (gnus-make-hashtable 4096)))
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1001 ;; Initialize the cache.
1002 (when gnus-use-cache
1003 (gnus-cache-open))
1004
1005 ;; Possibly eval the dribble file.
1006 (and init
1007 (or gnus-use-dribble-file gnus-slave)
1008 (gnus-dribble-eval-file))
1009
1010 ;; Slave Gnusii should then clear the dribble buffer.
1011 (when (and init gnus-slave)
1012 (gnus-dribble-clear))
1013
1014 (gnus-update-format-specifications)
1015
1016 ;; See whether we need to read the description file.
1017 (when (and (boundp 'gnus-group-line-format)
23f87bed 1018 (stringp gnus-group-line-format)
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1019 (let ((case-fold-search nil))
1020 (string-match "%[-,0-9]*D" gnus-group-line-format))
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1021 (not gnus-description-hashtb)
1022 (not dont-connect)
1023 gnus-read-active-file)
1024 (gnus-read-all-descriptions-files))
1025
1026 ;; Find new newsgroups and treat them.
1027 (when (and init gnus-check-new-newsgroups (not level)
1028 (gnus-check-server gnus-select-method)
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1029 (not gnus-slave)
1030 gnus-plugged)
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1031 (gnus-find-new-newsgroups))
1032
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1033 ;; Check and remove bogus newsgroups.
1034 (when (and init gnus-check-bogus-newsgroups
1035 gnus-read-active-file (not level)
1036 (gnus-server-opened gnus-select-method))
1037 (gnus-check-bogus-newsgroups))
1038
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1039 ;; Read any slave files.
1040 (gnus-master-read-slave-newsrc)
1041
1042 ;; Find the number of unread articles in each non-dead group.
1043 (let ((gnus-read-active-file (and (not level) gnus-read-active-file)))
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1044 (gnus-get-unread-articles level))))
1045
1046(defun gnus-call-subscribe-functions (method group)
1047 "Call METHOD to subscribe GROUP.
1048If no function returns `non-nil', call `gnus-subscribe-zombies'."
1049 (unless (cond
1050 ((functionp method)
1051 (funcall method group))
1052 ((listp method)
1053 (catch 'found
1054 (dolist (func method)
1055 (if (funcall func group)
1056 (throw 'found t)))
1057 nil))
1058 (t nil))
1059 (gnus-subscribe-zombies group)))
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1060
1061(defun gnus-find-new-newsgroups (&optional arg)
1062 "Search for new newsgroups and add them.
16409b0b 1063Each new newsgroup will be treated with `gnus-subscribe-newsgroup-method'.
eec82323 1064The `-n' option line from .newsrc is respected.
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1065
1066With 1 C-u, use the `ask-server' method to query the server for new
1067groups.
1068With 2 C-u's, use most complete method possible to query the server
1069for new groups, and subscribe the new groups as zombies."
1070 (interactive "p")
1071 (let* ((gnus-subscribe-newsgroup-method
1072 gnus-subscribe-newsgroup-method)
1073 (check (cond
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GM
1074 ((or (and (= (or arg 1) 4)
1075 (not (listp gnus-check-new-newsgroups)))
1076 (null gnus-read-active-file)
1077 (eq gnus-read-active-file 'some))
1078 'ask-server)
1079 ((= (or arg 1) 16)
1080 (setq gnus-subscribe-newsgroup-method
1081 'gnus-subscribe-zombies)
1082 t)
1083 (t gnus-check-new-newsgroups))))
837ba704
JD
1084 (if (or (consp check)
1085 (eq check 'ask-server))
1086 ;; Ask the server for new groups.
1087 (gnus-ask-server-for-new-groups)
1088 ;; Go through the active hashtb and look for new groups.
1089 (let ((groups 0)
1090 group new-newsgroups)
1091 (gnus-message 5 "Looking for new newsgroups...")
1092 (unless gnus-have-read-active-file
1093 (gnus-read-active-file))
1094 (setq gnus-newsrc-last-checked-date (message-make-date))
1095 (unless gnus-killed-hashtb
1096 (gnus-make-hashtable-from-killed))
1097 ;; Go though every newsgroup in `gnus-active-hashtb' and compare
1098 ;; with `gnus-newsrc-hashtb' and `gnus-killed-hashtb'.
1099 (mapatoms
1100 (lambda (sym)
1101 (if (or (null (setq group (symbol-name sym)))
1102 (not (boundp sym))
1103 (null (symbol-value sym))
1104 (gnus-gethash group gnus-killed-hashtb)
1105 (gnus-gethash group gnus-newsrc-hashtb))
1106 ()
1107 (let ((do-sub (gnus-matches-options-n group)))
1108 (cond
1109 ((eq do-sub 'subscribe)
1110 (setq groups (1+ groups))
1111 (gnus-sethash group group gnus-killed-hashtb)
1112 (gnus-call-subscribe-functions
1113 gnus-subscribe-options-newsgroup-method group))
1114 ((eq do-sub 'ignore)
1115 nil)
1116 (t
1117 (setq groups (1+ groups))
1118 (gnus-sethash group group gnus-killed-hashtb)
1119 (if gnus-subscribe-hierarchical-interactive
1120 (push group new-newsgroups)
1121 (gnus-call-subscribe-functions
1122 gnus-subscribe-newsgroup-method group)))))))
1123 gnus-active-hashtb)
1124 (when new-newsgroups
1125 (gnus-subscribe-hierarchical-interactive new-newsgroups))
1126 (if (> groups 0)
1127 (gnus-message 5 "%d new newsgroup%s arrived."
1128 groups (if (> groups 1) "s have" " has"))
9310f19d
LMI
1129 (gnus-message 5 "No new newsgroups."))
1130 groups))))
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1131
1132(defun gnus-matches-options-n (group)
1133 ;; Returns `subscribe' if the group is to be unconditionally
1134 ;; subscribed, `ignore' if it is to be ignored, and nil if there is
1135 ;; no match for the group.
1136
1137 ;; First we check the two user variables.
1138 (cond
1139 ((and gnus-options-subscribe
1140 (string-match gnus-options-subscribe group))
1141 'subscribe)
7410c270
G
1142 ((let ((do-subscribe nil))
1143 (dolist (category gnus-auto-subscribed-categories)
1144 (when (gnus-member-of-valid category group)
1145 (setq do-subscribe t)))
1146 do-subscribe)
1147 'subscribe)
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LMI
1148 ((and gnus-auto-subscribed-groups
1149 (string-match gnus-auto-subscribed-groups group))
1150 'subscribe)
1151 ((and gnus-options-not-subscribe
1152 (string-match gnus-options-not-subscribe group))
1153 'ignore)
1154 ;; Then we go through the list that was retrieved from the .newsrc
1155 ;; file. This list has elements on the form
1156 ;; `(REGEXP . {ignore,subscribe})'. The first match found (the list
1157 ;; is in the reverse order of the options line) is returned.
1158 (t
1159 (let ((regs gnus-newsrc-options-n))
1160 (while (and regs
1161 (not (string-match (caar regs) group)))
1162 (setq regs (cdr regs)))
1163 (and regs (cdar regs))))))
1164
1165(defun gnus-ask-server-for-new-groups ()
7c972da0
GM
1166 (let* ((new-date (message-make-date))
1167 (date (or gnus-newsrc-last-checked-date new-date))
eec82323
LMI
1168 (methods (cons gnus-select-method
1169 (nconc
1170 (when (gnus-archive-server-wanted-p)
1171 (list "archive"))
1172 (append
1173 (and (consp gnus-check-new-newsgroups)
1174 gnus-check-new-newsgroups)
1175 gnus-secondary-select-methods))))
1176 (groups 0)
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1177 group new-newsgroups got-new method hashtb
1178 gnus-override-subscribe-method)
6748645f
LMI
1179 (unless gnus-killed-hashtb
1180 (gnus-make-hashtable-from-killed))
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LMI
1181 ;; Go through both primary and secondary select methods and
1182 ;; request new newsgroups.
1183 (while (setq method (gnus-server-get-method nil (pop methods)))
6748645f
LMI
1184 (setq new-newsgroups nil
1185 gnus-override-subscribe-method method)
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LMI
1186 (when (and (gnus-check-server method)
1187 (gnus-request-newgroups date method))
1188 (save-excursion
6748645f
LMI
1189 (setq got-new t
1190 hashtb (gnus-make-hashtable 100))
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LMI
1191 (set-buffer nntp-server-buffer)
1192 ;; Enter all the new groups into a hashtable.
1193 (gnus-active-to-gnus-format method hashtb 'ignore))
1194 ;; Now all new groups from `method' are in `hashtb'.
1195 (mapatoms
1196 (lambda (group-sym)
1197 (if (or (null (setq group (symbol-name group-sym)))
1198 (not (boundp group-sym))
1199 (null (symbol-value group-sym))
1200 (gnus-gethash group gnus-newsrc-hashtb)
1201 (member group gnus-zombie-list)
1202 (member group gnus-killed-list))
1203 ;; The group is already known.
1204 ()
1205 ;; Make this group active.
1206 (when (symbol-value group-sym)
1207 (gnus-set-active group (symbol-value group-sym)))
1208 ;; Check whether we want it or not.
1209 (let ((do-sub (gnus-matches-options-n group)))
1210 (cond
1211 ((eq do-sub 'subscribe)
1212 (incf groups)
1213 (gnus-sethash group group gnus-killed-hashtb)
23f87bed
MB
1214 (gnus-call-subscribe-functions
1215 gnus-subscribe-options-newsgroup-method group))
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LMI
1216 ((eq do-sub 'ignore)
1217 nil)
1218 (t
1219 (incf groups)
1220 (gnus-sethash group group gnus-killed-hashtb)
1221 (if gnus-subscribe-hierarchical-interactive
1222 (push group new-newsgroups)
23f87bed
MB
1223 (gnus-call-subscribe-functions
1224 gnus-subscribe-newsgroup-method group)))))))
eec82323
LMI
1225 hashtb))
1226 (when new-newsgroups
1227 (gnus-subscribe-hierarchical-interactive new-newsgroups)))
16409b0b
GM
1228 (if (> groups 0)
1229 (gnus-message 5 "%d new newsgroup%s arrived"
1230 groups (if (> groups 1) "s have" " has"))
1231 (gnus-message 5 "No new newsgroups"))
eec82323
LMI
1232 (when got-new
1233 (setq gnus-newsrc-last-checked-date new-date))
9310f19d 1234 new-newsgroups))
eec82323 1235
16409b0b 1236(defun gnus-subscribe-group (group &optional previous method)
23f87bed 1237 "Subscribe GROUP and put it after PREVIOUS."
eec82323
LMI
1238 (gnus-group-change-level
1239 (if method
1240 (list t group gnus-level-default-subscribed nil nil method)
1241 group)
16409b0b
GM
1242 gnus-level-default-subscribed gnus-level-killed previous t)
1243 t)
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LMI
1244
1245;; `gnus-group-change-level' is the fundamental function for changing
1246;; subscription levels of newsgroups. This might mean just changing
1247;; from level 1 to 2, which is pretty trivial, from 2 to 6 or back
1248;; again, which subscribes/unsubscribes a group, which is equally
1249;; trivial. Changing from 1-7 to 8-9 means that you kill a group, and
1250;; from 8-9 to 1-7 means that you remove the group from the list of
1251;; killed (or zombie) groups and add them to the (kinda) subscribed
1252;; groups. And last but not least, moving from 8 to 9 and 9 to 8,
1253;; which is trivial.
1254;; ENTRY can either be a string (newsgroup name) or a list (if
1255;; FROMKILLED is t, it's a list on the format (NUM INFO-LIST),
1256;; otherwise it's a list in the format of the `gnus-newsrc-hashtb'
1257;; entries.
1258;; LEVEL is the new level of the group, OLDLEVEL is the old level and
1259;; PREVIOUS is the group (in hashtb entry format) to insert this group
1260;; after.
1261(defun gnus-group-change-level (entry level &optional oldlevel
1262 previous fromkilled)
1263 (let (group info active num)
1264 ;; Glean what info we can from the arguments
1265 (if (consp entry)
1266 (if fromkilled (setq group (nth 1 entry))
1267 (setq group (car (nth 2 entry))))
1268 (setq group entry))
1269 (when (and (stringp entry)
1270 oldlevel
1271 (< oldlevel gnus-level-zombie))
01c52d31 1272 (setq entry (gnus-group-entry entry)))
eec82323
LMI
1273 (if (and (not oldlevel)
1274 (consp entry))
1275 (setq oldlevel (gnus-info-level (nth 2 entry)))
6748645f 1276 (setq oldlevel (or oldlevel gnus-level-killed)))
eec82323 1277 (when (stringp previous)
01c52d31 1278 (setq previous (gnus-group-entry previous)))
eec82323
LMI
1279
1280 (if (and (>= oldlevel gnus-level-zombie)
01c52d31 1281 (gnus-group-entry group))
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LMI
1282 ;; We are trying to subscribe a group that is already
1283 ;; subscribed.
1284 () ; Do nothing.
1285
1286 (unless (gnus-ephemeral-group-p group)
1287 (gnus-dribble-enter
1288 (format "(gnus-group-change-level %S %S %S %S %S)"
1289 group level oldlevel (car (nth 2 previous)) fromkilled)))
1290
1291 ;; Then we remove the newgroup from any old structures, if needed.
1292 ;; If the group was killed, we remove it from the killed or zombie
1293 ;; list. If not, and it is in fact going to be killed, we remove
1294 ;; it from the newsrc hash table and assoc.
1295 (cond
1296 ((>= oldlevel gnus-level-zombie)
23f87bed
MB
1297 ;; oldlevel could be wrong.
1298 (setq gnus-zombie-list (delete group gnus-zombie-list))
1299 (setq gnus-killed-list (delete group gnus-killed-list)))
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LMI
1300 (t
1301 (when (and (>= level gnus-level-zombie)
1302 entry)
1303 (gnus-sethash (car (nth 2 entry)) nil gnus-newsrc-hashtb)
1304 (when (nth 3 entry)
01c52d31 1305 (setcdr (gnus-group-entry (car (nth 3 entry)))
eec82323
LMI
1306 (cdr entry)))
1307 (setcdr (cdr entry) (cdddr entry)))))
1308
1309 ;; Finally we enter (if needed) the list where it is supposed to
1310 ;; go, and change the subscription level. If it is to be killed,
1311 ;; we enter it into the killed or zombie list.
1312 (cond
1313 ((>= level gnus-level-zombie)
1314 ;; Remove from the hash table.
1315 (gnus-sethash group nil gnus-newsrc-hashtb)
1316 ;; We do not enter foreign groups into the list of dead
1317 ;; groups.
1318 (unless (gnus-group-foreign-p group)
1319 (if (= level gnus-level-zombie)
1320 (push group gnus-zombie-list)
23f87bed
MB
1321 (if (= oldlevel gnus-level-killed)
1322 ;; Remove from active hashtb.
1323 (unintern group gnus-active-hashtb)
1324 ;; Don't add it into killed-list if it was killed.
1325 (push group gnus-killed-list)))))
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LMI
1326 (t
1327 ;; If the list is to be entered into the newsrc assoc, and
1328 ;; it was killed, we have to create an entry in the newsrc
1329 ;; hashtb format and fix the pointers in the newsrc assoc.
1330 (if (< oldlevel gnus-level-zombie)
1331 ;; It was alive, and it is going to stay alive, so we
1332 ;; just change the level and don't change any pointers or
1333 ;; hash table entries.
1334 (setcar (cdaddr entry) level)
1335 (if (listp entry)
1336 (setq info (cdr entry)
1337 num (car entry))
1338 (setq active (gnus-active group))
1339 (setq num
1340 (if active (- (1+ (cdr active)) (car active)) t))
16409b0b
GM
1341 ;; Shorten the select method if possible, if we need to
1342 ;; store it at all (native groups).
1343 (let ((method (gnus-method-simplify
1344 (or gnus-override-subscribe-method
1345 (gnus-group-method group)))))
1346 (if method
1347 (setq info (list group level nil nil method))
1348 (setq info (list group level nil)))))
eec82323
LMI
1349 (unless previous
1350 (setq previous
1351 (let ((p gnus-newsrc-alist))
1352 (while (cddr p)
1353 (setq p (cdr p)))
1354 p)))
1355 (setq entry (cons info (cddr previous)))
1356 (if (cdr previous)
1357 (progn
1358 (setcdr (cdr previous) entry)
1359 (gnus-sethash group (cons num (cdr previous))
1360 gnus-newsrc-hashtb))
1361 (setcdr previous entry)
1362 (gnus-sethash group (cons num previous)
1363 gnus-newsrc-hashtb))
1364 (when (cdr entry)
01c52d31 1365 (setcdr (gnus-group-entry (caadr entry)) entry))
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LMI
1366 (gnus-dribble-enter
1367 (format
1368 "(gnus-group-set-info '%S)" info)))))
1369 (when gnus-group-change-level-function
a8151ef7
LMI
1370 (funcall gnus-group-change-level-function
1371 group level oldlevel previous)))))
eec82323
LMI
1372
1373(defun gnus-kill-newsgroup (newsgroup)
1374 "Obsolete function. Kills a newsgroup."
1375 (gnus-group-change-level
01c52d31 1376 (gnus-group-entry newsgroup) gnus-level-killed))
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LMI
1377
1378(defun gnus-check-bogus-newsgroups (&optional confirm)
1379 "Remove bogus newsgroups.
1380If CONFIRM is non-nil, the user has to confirm the deletion of every
1381newsgroup."
1382 (let ((newsrc (cdr gnus-newsrc-alist))
1383 bogus group entry info)
1384 (gnus-message 5 "Checking bogus newsgroups...")
1385 (unless (gnus-read-active-file-p)
1386 (gnus-read-active-file t))
1387 (when (gnus-read-active-file-p)
1388 ;; Find all bogus newsgroup that are subscribed.
1389 (while newsrc
1390 (setq info (pop newsrc)
1391 group (gnus-info-group info))
1392 (unless (or (gnus-active group) ; Active
23f87bed
MB
1393 (and (gnus-info-method info)
1394 (not (gnus-secondary-method-p
1395 (gnus-info-method info))))) ; Foreign
eec82323
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1396 ;; Found a bogus newsgroup.
1397 (push group bogus)))
1398 (if confirm
1399 (map-y-or-n-p
a3f57c41 1400 (format "Remove bogus group %%s (of %d groups)? " (length bogus))
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LMI
1401 (lambda (group)
1402 ;; Remove all bogus subscribed groups by first killing them, and
1403 ;; then removing them from the list of killed groups.
01c52d31 1404 (when (setq entry (gnus-group-entry group))
eec82323
LMI
1405 (gnus-group-change-level entry gnus-level-killed)
1406 (setq gnus-killed-list (delete group gnus-killed-list))))
1407 bogus '("group" "groups" "remove"))
1408 (while (setq group (pop bogus))
1409 ;; Remove all bogus subscribed groups by first killing them, and
1410 ;; then removing them from the list of killed groups.
01c52d31 1411 (when (setq entry (gnus-group-entry group))
eec82323
LMI
1412 (gnus-group-change-level entry gnus-level-killed)
1413 (setq gnus-killed-list (delete group gnus-killed-list)))))
1414 ;; Then we remove all bogus groups from the list of killed and
1415 ;; zombie groups. They are removed without confirmation.
1416 (let ((dead-lists '(gnus-killed-list gnus-zombie-list))
1417 killed)
1418 (while dead-lists
1419 (setq killed (symbol-value (car dead-lists)))
1420 (while killed
1421 (unless (gnus-active (setq group (pop killed)))
1422 ;; The group is bogus.
1423 ;; !!!Slow as hell.
1424 (set (car dead-lists)
1425 (delete group (symbol-value (car dead-lists))))))
1426 (setq dead-lists (cdr dead-lists))))
6748645f 1427 (gnus-run-hooks 'gnus-check-bogus-groups-hook)
eec82323
LMI
1428 (gnus-message 5 "Checking bogus newsgroups...done"))))
1429
1430(defun gnus-check-duplicate-killed-groups ()
1431 "Remove duplicates from the list of killed groups."
1432 (interactive)
1433 (let ((killed gnus-killed-list))
1434 (while killed
1435 (gnus-message 9 "%d" (length killed))
1436 (setcdr killed (delete (car killed) (cdr killed)))
1437 (setq killed (cdr killed)))))
1438
1439;; We want to inline a function from gnus-cache, so we cheat here:
9efa445f 1440(defvar gnus-cache-active-hashtb)
eec82323 1441(eval-when-compile
eec82323
LMI
1442 (defun gnus-cache-possibly-alter-active (group active)
1443 "Alter the ACTIVE info for GROUP to reflect the articles in the cache."
1444 (when gnus-cache-active-hashtb
1445 (let ((cache-active (gnus-gethash group gnus-cache-active-hashtb)))
a8151ef7
LMI
1446 (when cache-active
1447 (when (< (car cache-active) (car active))
1448 (setcar active (car cache-active)))
1449 (when (> (cdr cache-active) (cdr active))
1450 (setcdr active (cdr cache-active))))))))
eec82323 1451
c15c8017
LMI
1452(defun gnus-activate-group (group &optional scan dont-check method
1453 dont-sub-check)
531e5812
MB
1454 "Check whether a group has been activated or not.
1455If SCAN, request a scan of that group as well."
eec82323
LMI
1456 (let ((method (or method (inline (gnus-find-method-for-group group))))
1457 active)
1458 (and (inline (gnus-check-server method))
1459 ;; We escape all bugs and quit here to make it possible to
1460 ;; continue if a group is so out-there that it reports bugs
1461 ;; and stuff.
1462 (progn
1463 (and scan
1464 (gnus-check-backend-function 'request-scan (car method))
1465 (gnus-request-scan group method))
1466 t)
23f87bed 1467 (if (or debug-on-error debug-on-quit)
c15c8017 1468 (inline (gnus-request-group group (or dont-sub-check dont-check)
286c4fc2
LMI
1469 method
1470 (gnus-get-info group)))
23f87bed 1471 (condition-case nil
c15c8017 1472 (inline (gnus-request-group group (or dont-sub-check dont-check)
286c4fc2
LMI
1473 method
1474 (gnus-get-info group)))
23f87bed
MB
1475 ;;(error nil)
1476 (quit
1477 (message "Quit activating %s" group)
1478 nil)))
1479 (unless dont-check
1480 (setq active (gnus-parse-active))
1481 ;; If there are no articles in the group, the GROUP
1482 ;; command may have responded with the `(0 . 0)'. We
1483 ;; ignore this if we already have an active entry
1484 ;; for the group.
01c52d31
MB
1485 (if (and (zerop (or (car active) 0))
1486 (zerop (or (cdr active) 0))
23f87bed
MB
1487 (gnus-active group))
1488 (gnus-active group)
1489
54506618
MB
1490 ;; If a cache is present, we may have to alter the active info.
1491 (when gnus-use-cache
1492 (inline (gnus-cache-possibly-alter-active
1493 group active)))
1494
1495 ;; If the agent is enabled, we may have to alter the active info.
1496 (when gnus-agent
1497 (gnus-agent-possibly-alter-active group active))
1498
23f87bed
MB
1499 (gnus-set-active group active)
1500 ;; Return the new active info.
1501 active)))))
eec82323
LMI
1502
1503(defun gnus-get-unread-articles-in-group (info active &optional update)
54506618 1504 (when (and info active)
eec82323
LMI
1505 ;; Allow the backend to update the info in the group.
1506 (when (and update
1507 (gnus-request-update-info
1508 info (inline (gnus-find-method-for-group
1509 (gnus-info-group info)))))
1510 (gnus-activate-group (gnus-info-group info) nil t))
6748645f 1511
b1ae92ba
G
1512 ;; Allow backends to update marks,
1513 (when gnus-use-backend-marks
1514 (let ((method (inline (gnus-find-method-for-group
1515 (gnus-info-group info)))))
1516 (when (gnus-check-backend-function 'request-marks (car method))
1517 (gnus-request-marks info method))))
1518
eec82323
LMI
1519 (let* ((range (gnus-info-read info))
1520 (num 0))
54506618
MB
1521
1522 ;; These checks are present in gnus-activate-group but skipped
1523 ;; due to setting dont-check in the preceeding call.
1524
eec82323
LMI
1525 ;; If a cache is present, we may have to alter the active info.
1526 (when (and gnus-use-cache info)
1527 (inline (gnus-cache-possibly-alter-active
1528 (gnus-info-group info) active)))
23f87bed
MB
1529
1530 ;; If the agent is enabled, we may have to alter the active info.
1531 (when (and gnus-agent info)
54506618 1532 (gnus-agent-possibly-alter-active (gnus-info-group info) active info))
23f87bed 1533
eec82323
LMI
1534 ;; Modify the list of read articles according to what articles
1535 ;; are available; then tally the unread articles and add the
1536 ;; number to the group hash table entry.
1537 (cond
1538 ((zerop (cdr active))
1539 (setq num 0))
1540 ((not range)
1541 (setq num (- (1+ (cdr active)) (car active))))
1542 ((not (listp (cdr range)))
1543 ;; Fix a single (num . num) range according to the
1544 ;; active hash table.
1545 ;; Fix by Carsten Bormann <cabo@Informatik.Uni-Bremen.DE>.
1546 (and (< (cdr range) (car active)) (setcdr range (1- (car active))))
1547 (and (> (cdr range) (cdr active)) (setcdr range (cdr active)))
1548 ;; Compute number of unread articles.
1549 (setq num (max 0 (- (cdr active) (- (1+ (cdr range)) (car range))))))
1550 (t
1551 ;; The read list is a list of ranges. Fix them according to
1552 ;; the active hash table.
1553 ;; First peel off any elements that are below the lower
1554 ;; active limit.
1555 (while (and (cdr range)
1556 (>= (car active)
1557 (or (and (atom (cadr range)) (cadr range))
1558 (caadr range))))
1559 (if (numberp (car range))
1560 (setcar range
1561 (cons (car range)
1562 (or (and (numberp (cadr range))
1563 (cadr range))
1564 (cdadr range))))
1565 (setcdr (car range)
1566 (or (and (numberp (nth 1 range)) (nth 1 range))
1567 (cdadr range))))
1568 (setcdr range (cddr range)))
1569 ;; Adjust the first element to be the same as the lower limit.
1570 (when (and (not (atom (car range)))
1571 (< (cdar range) (car active)))
1572 (setcdr (car range) (1- (car active))))
1573 ;; Then we want to peel off any elements that are higher
1574 ;; than the upper active limit.
1575 (let ((srange range))
16409b0b 1576 ;; Go past all valid elements.
eec82323
LMI
1577 (while (and (cdr srange)
1578 (<= (or (and (atom (cadr srange))
1579 (cadr srange))
1580 (caadr srange))
1581 (cdr active)))
1582 (setq srange (cdr srange)))
1583 (when (cdr srange)
16409b0b 1584 ;; Nuke all remaining invalid elements.
eec82323
LMI
1585 (setcdr srange nil))
1586
1587 ;; Adjust the final element.
1588 (when (and (not (atom (car srange)))
1589 (> (cdar srange) (cdr active)))
1590 (setcdr (car srange) (cdr active))))
1591 ;; Compute the number of unread articles.
1592 (while range
1593 (setq num (+ num (- (1+ (or (and (atom (car range)) (car range))
1594 (cdar range)))
1595 (or (and (atom (car range)) (car range))
1596 (caar range)))))
1597 (setq range (cdr range)))
1598 (setq num (max 0 (- (cdr active) num)))))
1599 ;; Set the number of unread articles.
23f87bed 1600 (when (and info
01c52d31
MB
1601 (gnus-group-entry (gnus-info-group info)))
1602 (setcar (gnus-group-entry (gnus-info-group info)) num))
eec82323
LMI
1603 num)))
1604
1605;; Go though `gnus-newsrc-alist' and compare with `gnus-active-hashtb'
1606;; and compute how many unread articles there are in each group.
1607(defun gnus-get-unread-articles (&optional level)
23f87bed 1608 (setq gnus-server-method-cache nil)
3d319c8f 1609 (require 'gnus-agent)
eec82323 1610 (let* ((newsrc (cdr gnus-newsrc-alist))
b890d447 1611 (alevel (or level gnus-activate-level (1+ gnus-level-subscribed)))
eec82323 1612 (foreign-level
cdad7ab2
LMI
1613 (or
1614 level
1615 (min
1616 (cond ((and gnus-activate-foreign-newsgroups
1617 (not (numberp gnus-activate-foreign-newsgroups)))
1618 (1+ gnus-level-subscribed))
1619 ((numberp gnus-activate-foreign-newsgroups)
1620 gnus-activate-foreign-newsgroups)
1621 (t 0))
1622 alevel)))
23f87bed
MB
1623 (methods-cache nil)
1624 (type-cache nil)
4469385c 1625 (gnus-agent-article-local-times 0)
cc4244d3 1626 (archive-method (gnus-server-to-method "archive"))
8c3e17f8 1627 infos info group active method cmethod
55c9cbb0 1628 method-type method-group-list entry)
23f87bed 1629 (gnus-message 6 "Checking new news...")
eec82323
LMI
1630
1631 (while newsrc
1632 (setq active (gnus-active (setq group (gnus-info-group
01c52d31 1633 (setq info (pop newsrc))))))
8c3e17f8
LMI
1634 ;; First go through all the groups, see what select methods they
1635 ;; belong to, and then collect them into lists per unique select
1636 ;; method.
1637 (if (not (setq method (gnus-info-method info)))
1638 (setq method gnus-select-method)
0617bb00
LMI
1639 ;; There may be several similar methods. Possibly extend the
1640 ;; method.
23f87bed
MB
1641 (if (setq cmethod (assoc method methods-cache))
1642 (setq method (cdr cmethod))
0617bb00
LMI
1643 (setq cmethod (if (stringp method)
1644 (gnus-server-to-method method)
1645 (inline (gnus-find-method-for-group
1646 (gnus-info-group info) info))))
23f87bed
MB
1647 (push (cons method cmethod) methods-cache)
1648 (setq method cmethod)))
8c3e17f8
LMI
1649 (setq method-group-list (assoc method type-cache))
1650 (unless method-group-list
23f87bed 1651 (setq method-type
01c52d31 1652 (cond
cc4244d3
LMI
1653 ((or (gnus-secondary-method-p method)
1654 (and (gnus-archive-server-wanted-p)
1655 (gnus-methods-equal-p archive-method method)))
01c52d31
MB
1656 'secondary)
1657 ((inline (gnus-server-equal gnus-select-method method))
1658 'primary)
1659 (t
1660 'foreign)))
20a673b2 1661 (push (setq method-group-list (list method method-type nil nil))
8c3e17f8 1662 type-cache))
a83e5f19 1663 ;; Only add groups that need updating.
55c9cbb0
KY
1664 (if (<= (gnus-info-level info)
1665 (if (eq (cadr method-group-list) 'foreign)
1666 foreign-level
1667 alevel))
1668 (setcar (nthcdr 2 method-group-list)
1669 (cons info (nth 2 method-group-list)))
1670 ;; The group is inactive, so we nix out the number of unread articles.
1671 ;; It leads `(gnus-group-unread group)' to return t. See also
1672 ;; `gnus-group-prepare-flat'.
1673 (unless active
1674 (when (setq entry (gnus-group-entry group))
1675 (setcar entry t)))))
8c3e17f8
LMI
1676
1677 ;; Sort the methods based so that the primary and secondary
1678 ;; methods come first. This is done for legacy reasons to try to
1679 ;; ensure that side-effect behaviour doesn't change from previous
1680 ;; Gnus versions.
1681 (setq type-cache
1682 (sort (nreverse type-cache)
1683 (lambda (c1 c2)
1684 (< (gnus-method-rank (cadr c1) (car c1))
1685 (gnus-method-rank (cadr c2) (car c2))))))
1686
20a673b2
KY
1687 ;; Start early async retrieval of data.
1688 (dolist (elem type-cache)
1689 (destructuring-bind (method method-type infos dummy) elem
1690 (when (and method infos
bdaa75c7 1691 (not (gnus-method-denied-p method)))
1fe0787f
LMI
1692 ;; If the open-server method doesn't exist, then the method
1693 ;; itself doesn't exist, so we ignore it.
1694 (if (not (ignore-errors (gnus-get-function method 'open-server)))
1695 (setq type-cache (delq elem type-cache))
1696 (unless (gnus-server-opened method)
1697 (gnus-open-server method))
1698 (when (and
1699 (gnus-server-opened method)
1700 (gnus-check-backend-function
1701 'retrieve-group-data-early (car method)))
1702 (when (gnus-check-backend-function 'request-scan (car method))
1703 (gnus-request-scan nil method))
1704 (setcar (nthcdr 3 elem)
1705 (gnus-retrieve-group-data-early method infos)))))))
20a673b2
KY
1706
1707 ;; Do the rest of the retrieval.
1708 (dolist (elem type-cache)
1709 (destructuring-bind (method method-type infos early-data) elem
1710 (when (and method infos)
b1ae92ba
G
1711 (let ((updatep (gnus-check-backend-function
1712 'request-update-info (car method))))
1713 ;; See if any of the groups from this method require updating.
1714 (gnus-read-active-for-groups method infos early-data)
1715 (dolist (info infos)
1716 (inline (gnus-get-unread-articles-in-group
1717 info (gnus-active (gnus-info-group info))
1718 updatep)))))))
23f87bed 1719 (gnus-message 6 "Checking new news...done")))
eec82323 1720
8c3e17f8
LMI
1721(defun gnus-method-rank (type method)
1722 (cond
d65835d9
LMI
1723 ;; Get info for virtual groups last.
1724 ((eq (car method) 'nnvirtual)
1725 200)
8c3e17f8
LMI
1726 ((eq type 'primary)
1727 1)
1728 ;; Compute the rank of the secondary methods based on where they
1729 ;; are in the secondary select list.
1730 ((eq type 'secondary)
1731 (let ((i 2))
1732 (block nil
1733 (dolist (smethod gnus-secondary-select-methods)
3cf628e8 1734 (when (equal method smethod)
8c3e17f8
LMI
1735 (return i))
1736 (incf i))
1737 i)))
1738 ;; Just say that all foreign groups have the same rank.
1739 (t
1740 100)))
1741
20a673b2 1742(defun gnus-read-active-for-groups (method infos early-data)
8c3e17f8
LMI
1743 (with-current-buffer nntp-server-buffer
1744 (cond
20a673b2
KY
1745 ((and
1746 (gnus-check-backend-function 'finish-retrieve-group-infos (car method))
1747 (or (not (gnus-agent-method-p method))
1748 (gnus-online method)))
e8861cd2
LMI
1749 (gnus-finish-retrieve-group-infos method infos early-data)
1750 (gnus-agent-save-active method))
8c3e17f8 1751 ((gnus-check-backend-function 'retrieve-groups (car method))
26f96aa0 1752 (when (gnus-check-backend-function 'request-scan (car method))
b069e5a6 1753 (gnus-request-scan nil method))
39486331
KY
1754 (let (groups)
1755 (gnus-read-active-file-2
1756 (dolist (info infos (nreverse groups))
1757 (push (gnus-group-real-name (gnus-info-group info)) groups))
1758 method)))
74769e8b 1759 ((gnus-check-backend-function 'request-list (car method))
39486331 1760 (gnus-read-active-file-1 method nil infos))
8c3e17f8
LMI
1761 (t
1762 (dolist (info infos)
74769e8b 1763 (gnus-activate-group (gnus-info-group info) nil nil method t))))))
8c3e17f8 1764
eec82323
LMI
1765;; Create a hash table out of the newsrc alist. The `car's of the
1766;; alist elements are used as keys.
1767(defun gnus-make-hashtable-from-newsrc-alist ()
1768 (let ((alist gnus-newsrc-alist)
1769 (ohashtb gnus-newsrc-hashtb)
01c52d31 1770 prev info method rest methods)
eec82323
LMI
1771 (setq gnus-newsrc-hashtb (gnus-make-hashtable (length alist)))
1772 (setq alist
1773 (setq prev (setq gnus-newsrc-alist
1774 (if (equal (caar gnus-newsrc-alist)
1775 "dummy.group")
1776 gnus-newsrc-alist
1777 (cons (list "dummy.group" 0 nil) alist)))))
1778 (while alist
01c52d31
MB
1779 (setq info (car alist))
1780 ;; Make the same select-methods identical Lisp objects.
1781 (when (setq method (gnus-info-method info))
1782 (if (setq rest (member method methods))
1783 (gnus-info-set-method info (car rest))
1784 (push method methods)))
fb994703
LMI
1785 ;; Check for duplicates.
1786 (if (gnus-gethash (car info) gnus-newsrc-hashtb)
1787 ;; Remove this entry from the alist.
1788 (setcdr prev (cddr prev))
1789 (gnus-sethash
1790 (car info)
1791 ;; Preserve number of unread articles in groups.
1792 (cons (and ohashtb (car (gnus-gethash (car info) ohashtb)))
1793 prev)
1794 gnus-newsrc-hashtb)
1795 (setq prev alist))
1796 (setq alist (cdr alist)))
01c52d31
MB
1797 ;; Make the same select-methods in `gnus-server-alist' identical
1798 ;; as well.
1799 (while methods
1800 (setq method (pop methods))
1801 (when (setq rest (rassoc method gnus-server-alist))
1802 (setcdr rest method)))))
eec82323
LMI
1803
1804(defun gnus-make-hashtable-from-killed ()
1805 "Create a hash table from the killed and zombie lists."
1806 (let ((lists '(gnus-killed-list gnus-zombie-list))
1807 list)
1808 (setq gnus-killed-hashtb
1809 (gnus-make-hashtable
1810 (+ (length gnus-killed-list) (length gnus-zombie-list))))
1811 (while lists
1812 (setq list (symbol-value (pop lists)))
1813 (while list
1814 (gnus-sethash (car list) (pop list) gnus-killed-hashtb)))))
1815
1816(defun gnus-parse-active ()
1817 "Parse active info in the nntp server buffer."
20a673b2 1818 (with-current-buffer nntp-server-buffer
eec82323
LMI
1819 (goto-char (point-min))
1820 ;; Parse the result we got from `gnus-request-group'.
1821 (when (looking-at "[0-9]+ [0-9]+ \\([0-9]+\\) [0-9]+")
1822 (goto-char (match-beginning 1))
1823 (cons (read (current-buffer))
1824 (read (current-buffer))))))
1825
1826(defun gnus-make-articles-unread (group articles)
1827 "Mark ARTICLES in GROUP as unread."
01c52d31
MB
1828 (let* ((info (nth 2 (or (gnus-group-entry group)
1829 (gnus-group-entry
1830 (gnus-group-real-name group)))))
eec82323
LMI
1831 (ranges (gnus-info-read info))
1832 news article)
1833 (while articles
1834 (when (gnus-member-of-range
1835 (setq article (pop articles)) ranges)
1836 (push article news)))
1837 (when news
23f87bed 1838 ;; Enter this list into the group info.
eec82323
LMI
1839 (gnus-info-set-read
1840 info (gnus-remove-from-range (gnus-info-read info) (nreverse news)))
23f87bed
MB
1841
1842 ;; Set the number of unread articles in gnus-newsrc-hashtb.
1843 (gnus-get-unread-articles-in-group info (gnus-active group))
1844
1845 ;; Insert the change into the group buffer and the dribble file.
1846 (gnus-group-update-group group t))))
1847
1848(defun gnus-make-ascending-articles-unread (group articles)
1849 "Mark ascending ARTICLES in GROUP as unread."
01c52d31
MB
1850 (let* ((entry (or (gnus-group-entry group)
1851 (gnus-group-entry (gnus-group-real-name group))))
23f87bed
MB
1852 (info (nth 2 entry))
1853 (ranges (gnus-info-read info))
1854 (r ranges)
1855 modified)
1856
1857 (while articles
1858 (let ((article (pop articles))) ; get the next article to remove from ranges
1859 (while (let ((range (car ranges))) ; note the current range
1860 (if (atom range) ; single value range
1861 (cond ((not range)
1862 ;; the articles extend past the end of the ranges
1863 ;; OK - I'm done
1864 (setq articles nil))
1865 ((< range article)
1866 ;; this range preceeds the article. Leave the range unmodified.
1867 (pop ranges)
1868 ranges)
1869 ((= range article)
1870 ;; this range exactly matches the article; REMOVE THE RANGE.
1871 ;; NOTE: When the range being removed is the last range, the list is corrupted by inserting null at its end.
1872 (setcar ranges (cadr ranges))
1873 (setcdr ranges (cddr ranges))
1874 (setq modified (if (car ranges) t 'remove-null))
1875 nil))
1876 (let ((min (car range))
1877 (max (cdr range)))
1878 ;; I have a min/max range to consider
1879 (cond ((> min max) ; invalid range introduced by splitter
1880 (setcar ranges (cadr ranges))
1881 (setcdr ranges (cddr ranges))
1882 (setq modified (if (car ranges) t 'remove-null))
1883 ranges)
1884 ((= min max)
1885 ;; replace min/max range with a single-value range
1886 (setcar ranges min)
1887 ranges)
1888 ((< max article)
1889 ;; this range preceeds the article. Leave the range unmodified.
1890 (pop ranges)
1891 ranges)
1892 ((< article min)
1893 ;; this article preceeds the range. Return null to move to the
1894 ;; next article
1895 nil)
1896 (t
1897 ;; this article splits the range into two parts
1898 (setcdr ranges (cons (cons (1+ article) max) (cdr ranges)))
1899 (setcdr range (1- article))
1900 (setq modified t)
1901 ranges))))))))
bf247b6e 1902
23f87bed
MB
1903 (when modified
1904 (when (eq modified 'remove-null)
1905 (setq r (delq nil r)))
1906 ;; Enter this list into the group info.
1907 (gnus-info-set-read info r)
1908
1909 ;; Set the number of unread articles in gnus-newsrc-hashtb.
1910 (gnus-get-unread-articles-in-group info (gnus-active group))
1911
1912 ;; Insert the change into the group buffer and the dribble file.
eec82323
LMI
1913 (gnus-group-update-group group t))))
1914
1915;; Enter all dead groups into the hashtb.
1916(defun gnus-update-active-hashtb-from-killed ()
1917 (let ((hashtb (setq gnus-active-hashtb (gnus-make-hashtable 4096)))
1918 (lists (list gnus-killed-list gnus-zombie-list))
1919 killed)
1920 (while lists
1921 (setq killed (car lists))
1922 (while killed
01c52d31 1923 (gnus-sethash (mm-string-as-unibyte (car killed)) nil hashtb)
eec82323
LMI
1924 (setq killed (cdr killed)))
1925 (setq lists (cdr lists)))))
1926
1927(defun gnus-get-killed-groups ()
1928 "Go through the active hashtb and mark all unknown groups as killed."
1929 ;; First make sure active file has been read.
1930 (unless (gnus-read-active-file-p)
1931 (let ((gnus-read-active-file t))
1932 (gnus-read-active-file)))
1933 (unless gnus-killed-hashtb
1934 (gnus-make-hashtable-from-killed))
1935 ;; Go through all newsgroups that are known to Gnus - enlarge kill list.
1936 (mapatoms
1937 (lambda (sym)
1938 (let ((groups 0)
1939 (group (symbol-name sym)))
1940 (if (or (null group)
1941 (gnus-gethash group gnus-killed-hashtb)
1942 (gnus-gethash group gnus-newsrc-hashtb))
1943 ()
1944 (let ((do-sub (gnus-matches-options-n group)))
1945 (if (or (eq do-sub 'subscribe) (eq do-sub 'ignore))
1946 ()
1947 (setq groups (1+ groups))
1948 (push group gnus-killed-list)
1949 (gnus-sethash group group gnus-killed-hashtb))))))
1950 gnus-active-hashtb)
1951 (gnus-dribble-touch))
1952
1953;; Get the active file(s) from the backend(s).
a8151ef7 1954(defun gnus-read-active-file (&optional force not-native)
eec82323
LMI
1955 (gnus-group-set-mode-line)
1956 (let ((methods
16409b0b
GM
1957 (mapcar
1958 (lambda (m) (if (stringp m) (gnus-server-get-method nil m) m))
1959 (append
1960 (if (and (not not-native)
1961 (gnus-check-server gnus-select-method))
1962 ;; The native server is available.
1963 (cons gnus-select-method gnus-secondary-select-methods)
1964 ;; The native server is down, so we just do the
1965 ;; secondary ones.
1966 gnus-secondary-select-methods)
1967 ;; Also read from the archive server.
1968 (when (gnus-archive-server-wanted-p)
1969 (list "archive")))))
1970 method)
eec82323 1971 (setq gnus-have-read-active-file nil)
20a673b2 1972 (with-current-buffer nntp-server-buffer
16409b0b
GM
1973 (while (setq method (pop methods))
1974 ;; Only do each method once, in case the methods appear more
1975 ;; than once in this list.
1fe0787f
LMI
1976 (when (and (not (member method methods))
1977 ;; Check whether the backend exists.
1978 (ignore-errors (gnus-get-function method 'open-server)))
23f87bed 1979 (if (or debug-on-error debug-on-quit)
16409b0b 1980 (gnus-read-active-file-1 method force)
23f87bed
MB
1981 (condition-case ()
1982 (gnus-read-active-file-1 method force)
1983 ;; We catch C-g so that we can continue past servers
1984 ;; that do not respond.
1985 (quit
1986 (message "Quit reading the active file")
1987 nil))))))))
16409b0b 1988
39486331 1989(defun gnus-read-active-file-1 (method force &optional infos)
16409b0b
GM
1990 (let (where mesg)
1991 (setq where (nth 1 method)
1992 mesg (format "Reading active file%s via %s..."
1993 (if (and where (not (zerop (length where))))
1994 (concat " from " where) "")
1995 (car method)))
bdaa75c7 1996 (gnus-message 5 "%s" mesg)
16409b0b
GM
1997 (when (gnus-check-server method)
1998 ;; Request that the backend scan its incoming messages.
a9ec34f4
LMI
1999 (when (and (or (and gnus-agent
2000 (gnus-online method))
2001 (not gnus-agent))
8c3e17f8 2002 (gnus-check-backend-function 'request-scan (car method)))
b069e5a6 2003 (gnus-request-scan nil method))
16409b0b
GM
2004 (cond
2005 ((and (eq gnus-read-active-file 'some)
2006 (gnus-check-backend-function 'retrieve-groups (car method))
2007 (not force))
2008 (let ((newsrc (cdr gnus-newsrc-alist))
2009 (gmethod (gnus-server-get-method nil method))
2010 groups info)
2011 (while (setq info (pop newsrc))
2012 (when (inline
2013 (gnus-server-equal
54506618
MB
2014 (inline
2015 (gnus-find-method-for-group
2016 (gnus-info-group info) info))
2017 gmethod))
16409b0b
GM
2018 (push (gnus-group-real-name (gnus-info-group info))
2019 groups)))
2020 (gnus-read-active-file-2 groups method)))
2021 ((null method)
2022 t)
2023 (t
2024 (if (not (gnus-request-list method))
2025 (unless (equal method gnus-message-archive-method)
2026 (gnus-error 1 "Cannot read active file from %s server"
2027 (car method)))
bdaa75c7 2028 (gnus-message 5 "%s" mesg)
16409b0b
GM
2029 (gnus-active-to-gnus-format method gnus-active-hashtb nil t)
2030 ;; We mark this active file as read.
e0da801a 2031 (add-to-list 'gnus-have-read-active-file method)
16409b0b
GM
2032 (gnus-message 5 "%sdone" mesg)))))))
2033
2034(defun gnus-read-active-file-2 (groups method)
23f87bed 2035 "Read an active file for GROUPS in METHOD using `gnus-retrieve-groups'."
16409b0b 2036 (when groups
20a673b2 2037 (with-current-buffer nntp-server-buffer
16409b0b
GM
2038 (gnus-check-server method)
2039 (let ((list-type (gnus-retrieve-groups groups method)))
2040 (cond ((not list-type)
2041 (gnus-error
2042 1.2 "Cannot read partial active file from %s server."
2043 (car method)))
2044 ((eq list-type 'active)
2045 (gnus-active-to-gnus-format method gnus-active-hashtb nil t))
2046 (t
2047 (gnus-groups-to-gnus-format method gnus-active-hashtb t)))))))
eec82323
LMI
2048
2049;; Read an active file and place the results in `gnus-active-hashtb'.
6748645f
LMI
2050(defun gnus-active-to-gnus-format (&optional method hashtb ignore-errors
2051 real-active)
eec82323
LMI
2052 (unless method
2053 (setq method gnus-select-method))
2054 (let ((cur (current-buffer))
2055 (hashtb (or hashtb
2056 (if (and gnus-active-hashtb
2057 (not (equal method gnus-select-method)))
2058 gnus-active-hashtb
2059 (setq gnus-active-hashtb
2060 (if (equal method gnus-select-method)
2061 (gnus-make-hashtable
2062 (count-lines (point-min) (point-max)))
1428d46b
MB
2063 (gnus-make-hashtable 4096))))))
2064 group max min)
a8151ef7 2065 ;; Delete unnecessary lines.
eec82323 2066 (goto-char (point-min))
16409b0b
GM
2067 (cond
2068 ((string= gnus-ignored-newsgroups "")
2069 (delete-matching-lines "^to\\."))
2070 (t
2071 (delete-matching-lines (concat "^to\\.\\|" gnus-ignored-newsgroups))))
2072
2073 (goto-char (point-min))
2074 (unless (re-search-forward "[\\\"]" nil t)
2075 ;; Make the group names readable as a lisp expression even if they
2076 ;; contain special characters.
2077 (goto-char (point-max))
2078 (while (re-search-backward "[][';?()#]" nil t)
2079 (insert ?\\)))
eec82323 2080
6748645f 2081 ;; Let the Gnus agent save the active file.
23f87bed 2082 (when (and gnus-agent real-active (gnus-online method))
6748645f
LMI
2083 (gnus-agent-save-active method))
2084
eec82323
LMI
2085 ;; If these are groups from a foreign select method, we insert the
2086 ;; group prefix in front of the group names.
a8151ef7
LMI
2087 (when (not (gnus-server-equal
2088 (gnus-server-get-method nil method)
2089 (gnus-server-get-method nil gnus-select-method)))
2090 (let ((prefix (gnus-group-prefixed-name "" method)))
2091 (goto-char (point-min))
2092 (while (and (not (eobp))
16409b0b
GM
2093 (progn
2094 (when (= (following-char) ?\")
2095 (forward-char 1))
2096 (insert prefix)
2097 (zerop (forward-line 1)))))))
eec82323 2098 ;; Store the active file in a hash table.
1428d46b
MB
2099 ;; Use a unibyte buffer in order to make `read' read non-ASCII
2100 ;; group names (which have been encoded) as unibyte strings.
2101 (mm-with-unibyte-buffer
2102 (insert-buffer-substring cur)
2103 (setq cur (current-buffer))
2104 (goto-char (point-min))
eec82323 2105 (while (not (eobp))
23f87bed 2106 (condition-case ()
eec82323 2107 (progn
01c52d31 2108 (narrow-to-region (point) (point-at-eol))
eec82323
LMI
2109 ;; group gets set to a symbol interned in the hash table
2110 ;; (what a hack!!) - jwz
2111 (setq group (let ((obarray hashtb)) (read cur)))
16409b0b
GM
2112 ;; ### The extended group name scheme makes
2113 ;; the previous optimization strategy sort of pointless...
2114 (when (stringp group)
2115 (setq group (intern group hashtb)))
eec82323
LMI
2116 (if (and (numberp (setq max (read cur)))
2117 (numberp (setq min (read cur)))
2118 (progn
2119 (skip-chars-forward " \t")
2120 (not
16409b0b
GM
2121 (or (eq (char-after) ?=)
2122 (eq (char-after) ?x)
2123 (eq (char-after) ?j)))))
eec82323
LMI
2124 (progn
2125 (set group (cons min max))
2126 ;; if group is moderated, stick in moderation table
16409b0b 2127 (when (eq (char-after) ?m)
eec82323
LMI
2128 (unless gnus-moderated-hashtb
2129 (setq gnus-moderated-hashtb (gnus-make-hashtable)))
2130 (gnus-sethash (symbol-name group) t
2131 gnus-moderated-hashtb)))
2132 (set group nil)))
2133 (error
2134 (and group
2135 (symbolp group)
2136 (set group nil))
2137 (unless ignore-errors
16409b0b 2138 (gnus-message 3 "Warning - invalid active: %s"
eec82323 2139 (buffer-substring
01c52d31 2140 (point-at-bol) (point-at-eol))))))
eec82323
LMI
2141 (widen)
2142 (forward-line 1)))))
2143
6748645f 2144(defun gnus-groups-to-gnus-format (method &optional hashtb real-active)
eec82323
LMI
2145 ;; Parse a "groups" active file.
2146 (let ((cur (current-buffer))
2147 (hashtb (or hashtb
2148 (if (and method gnus-active-hashtb)
2149 gnus-active-hashtb
2150 (setq gnus-active-hashtb
2151 (gnus-make-hashtable
2152 (count-lines (point-min) (point-max)))))))
2153 (prefix (and method
2154 (not (gnus-server-equal
2155 (gnus-server-get-method nil method)
2156 (gnus-server-get-method nil gnus-select-method)))
2157 (gnus-group-prefixed-name "" method))))
2158
6748645f 2159 ;; Let the Gnus agent save the active file.
16409b0b
GM
2160 (if (and gnus-agent
2161 real-active
23f87bed 2162 (gnus-online method)
16409b0b
GM
2163 (gnus-agent-method-p method))
2164 (progn
54506618 2165 (gnus-agent-save-active method)
16409b0b
GM
2166 (gnus-active-to-gnus-format method hashtb nil real-active))
2167
2168 (goto-char (point-min))
2169 ;; We split this into to separate loops, one with the prefix
2170 ;; and one without to speed the reading up somewhat.
2171 (if prefix
2172 (let (min max opoint group)
2173 (while (not (eobp))
2174 (condition-case ()
2175 (progn
2176 (read cur) (read cur)
2177 (setq min (read cur)
2178 max (read cur)
2179 opoint (point))
2180 (skip-chars-forward " \t")
2181 (insert prefix)
2182 (goto-char opoint)
2183 (set (let ((obarray hashtb)) (read cur))
2184 (cons min max)))
2185 (error (and group (symbolp group) (set group nil))))
2186 (forward-line 1)))
2187 (let (min max group)
eec82323
LMI
2188 (while (not (eobp))
2189 (condition-case ()
16409b0b 2190 (when (eq (char-after) ?2)
eec82323
LMI
2191 (read cur) (read cur)
2192 (setq min (read cur)
16409b0b
GM
2193 max (read cur))
2194 (set (setq group (let ((obarray hashtb)) (read cur)))
eec82323
LMI
2195 (cons min max)))
2196 (error (and group (symbolp group) (set group nil))))
16409b0b 2197 (forward-line 1)))))))
eec82323
LMI
2198
2199(defun gnus-read-newsrc-file (&optional force)
2200 "Read startup file.
2201If FORCE is non-nil, the .newsrc file is read."
2202 ;; Reset variables that might be defined in the .newsrc.eld file.
23f87bed 2203 (let ((variables (remove 'gnus-format-specs gnus-variable-list)))
eec82323
LMI
2204 (while variables
2205 (set (car variables) nil)
2206 (setq variables (cdr variables))))
2207 (let* ((newsrc-file gnus-current-startup-file)
2208 (quick-file (concat newsrc-file ".el")))
2209 (save-excursion
2210 ;; We always load the .newsrc.eld file. If always contains
2211 ;; much information that can not be gotten from the .newsrc
2212 ;; file (ticked articles, killed groups, foreign methods, etc.)
2213 (gnus-read-newsrc-el-file quick-file)
2214
16409b0b
GM
2215 (when (and gnus-read-newsrc-file
2216 (file-exists-p gnus-current-startup-file)
eec82323
LMI
2217 (or force
2218 (and (file-newer-than-file-p newsrc-file quick-file)
2219 (file-newer-than-file-p newsrc-file
2220 (concat quick-file "d")))
2221 (not gnus-newsrc-alist)))
2222 ;; We read the .newsrc file. Note that if there if a
2223 ;; .newsrc.eld file exists, it has already been read, and
2224 ;; the `gnus-newsrc-hashtb' has been created. While reading
2225 ;; the .newsrc file, Gnus will only use the information it
2226 ;; can find there for changing the data already read -
2227 ;; i. e., reading the .newsrc file will not trash the data
2228 ;; already read (except for read articles).
2229 (save-excursion
2230 (gnus-message 5 "Reading %s..." newsrc-file)
2231 (set-buffer (nnheader-find-file-noselect newsrc-file))
16409b0b 2232 (buffer-disable-undo)
eec82323
LMI
2233 (gnus-newsrc-to-gnus-format)
2234 (kill-buffer (current-buffer))
2235 (gnus-message 5 "Reading %s...done" newsrc-file)))
2236
2237 ;; Convert old to new.
2238 (gnus-convert-old-newsrc))))
2239
2240(defun gnus-convert-old-newsrc ()
54506618 2241 "Convert old newsrc formats into the current format, if needed."
eec82323 2242 (let ((fcv (and gnus-newsrc-file-version
86713405
MB
2243 (gnus-continuum-version gnus-newsrc-file-version)))
2244 (gcv (gnus-continuum-version)))
54506618
MB
2245 (when fcv
2246 ;; A newsrc file was loaded.
2247 (let (prompt-displayed
2248 (converters
2249 (sort
2250 (mapcar (lambda (date-func)
2251 (cons (gnus-continuum-version (car date-func))
2252 date-func))
2253 ;; This is a list of converters that must be run
2254 ;; to bring the newsrc file up to the current
2255 ;; version. If you create an incompatibility
2256 ;; with older versions, you should create an
2257 ;; entry here. The entry should consist of the
2258 ;; current gnus version (hardcoded so that it
2259 ;; doesn't change with each release) and the
2260 ;; function that must be applied to convert the
2261 ;; previous version into the current version.
c825ac9d 2262 '(("September Gnus v0.1" nil
54506618
MB
2263 gnus-convert-old-ticks)
2264 ("Oort Gnus v0.08" "legacy-gnus-agent"
2265 gnus-agent-convert-to-compressed-agentview)
c825ac9d 2266 ("Gnus v5.10.7" "legacy-gnus-agent"
54506618 2267 gnus-agent-unlist-expire-days)
c825ac9d 2268 ("Gnus v5.10.7" "legacy-gnus-agent"
54506618
MB
2269 gnus-agent-unhook-expire-days)))
2270 #'car-less-than-car)))
2271 ;; Skip converters older than the file version
2272 (while (and converters (>= fcv (caar converters)))
2273 (pop converters))
2274
2275 ;; Perform converters to bring older version up to date.
2276 (when (and converters (< fcv (caar converters)))
d5ddd795 2277 (while (and converters (< fcv (caar converters))
86713405 2278 (<= (caar converters) gcv))
54506618
MB
2279 (let* ((converter-spec (pop converters))
2280 (convert-to (nth 1 converter-spec))
2281 (load-from (nth 2 converter-spec))
2282 (func (nth 3 converter-spec)))
2283 (when (and load-from
2284 (not (fboundp func)))
2285 (load load-from t))
54506618
MB
2286 (or prompt-displayed
2287 (not (gnus-convert-converter-needs-prompt func))
2288 (while (let (c
2289 (cursor-in-echo-area t)
2290 (echo-keystrokes 0))
2291 (message "Convert gnus from version '%s' to '%s'? (n/y/?)"
2292 gnus-newsrc-file-version gnus-version)
2293 (setq c (read-char-exclusive))
2294
2295 (cond ((or (eq c ?n) (eq c ?N))
2296 (error "Can not start gnus without converting"))
2297 ((or (eq c ?y) (eq c ?Y))
2298 (setq prompt-displayed t)
2299 nil)
2300 ((eq c ?\?)
2301 (message "This conversion is irreversible. \
2302 To be safe, you should backup your files before proceeding.")
2303 (sit-for 5)
2304 t)
2305 (t
2306 (gnus-message 3 "Ignoring unexpected input")
2307 (sit-for 3)
2308 t)))))
2309
2310 (funcall func convert-to)))
bf247b6e 2311 (gnus-dribble-enter
54506618
MB
2312 (format ";Converted gnus from version '%s' to '%s'."
2313 gnus-newsrc-file-version gnus-version)))))))
2314
2315(defun gnus-convert-mark-converter-prompt (converter no-prompt)
2316 "Indicate whether CONVERTER requires gnus-convert-old-newsrc to
2317 display the conversion prompt. NO-PROMPT may be nil (prompt),
2318 t (no prompt), or any form that can be called as a function.
2319 The form should return either t or nil."
2320 (put converter 'gnus-convert-no-prompt no-prompt))
2321
2322(defun gnus-convert-converter-needs-prompt (converter)
2323 (let ((no-prompt (get converter 'gnus-convert-no-prompt)))
2324 (not (if (memq no-prompt '(t nil))
2325 no-prompt
2326 (funcall no-prompt)))))
2327
2328(defun gnus-convert-old-ticks (converting-to)
eec82323
LMI
2329 (let ((newsrc (cdr gnus-newsrc-alist))
2330 marks info dormant ticked)
2331 (while (setq info (pop newsrc))
2332 (when (setq marks (gnus-info-marks info))
2333 (setq dormant (cdr (assq 'dormant marks))
2334 ticked (cdr (assq 'tick marks)))
2335 (when (or dormant ticked)
2336 (gnus-info-set-read
2337 info
2338 (gnus-add-to-range
2339 (gnus-info-read info)
2340 (nconc (gnus-uncompress-range dormant)
2341 (gnus-uncompress-range ticked)))))))))
2342
23f87bed
MB
2343(defun gnus-load (file)
2344 "Load FILE, but in such a way that read errors can be reported."
2345 (with-temp-buffer
2346 (insert-file-contents file)
2347 (while (not (eobp))
2348 (condition-case type
2349 (let ((form (read (current-buffer))))
2350 (eval form))
2351 (error
2352 (unless (eq (car type) 'end-of-file)
af5370ad 2353 (let ((errmsg (format "Error in %s line %d" file
80d06753 2354 (count-lines (point-min) (point)))))
23f87bed 2355 (ding)
af5370ad
RS
2356 (unless (gnus-yes-or-no-p (concat errmsg "; continue? "))
2357 (error "%s" errmsg)))))))))
23f87bed 2358
eec82323
LMI
2359(defun gnus-read-newsrc-el-file (file)
2360 (let ((ding-file (concat file "d")))
23f87bed
MB
2361 (when (file-exists-p ding-file)
2362 ;; We always, always read the .eld file.
2363 (gnus-message 5 "Reading %s..." ding-file)
2364 (let (gnus-newsrc-assoc)
a37d67dd 2365 (gnus-load ding-file)
23f87bed
MB
2366 ;; Older versions of `gnus-format-specs' are no longer valid
2367 ;; in Oort Gnus 0.01.
2368 (let ((version
2369 (and gnus-newsrc-file-version
2370 (gnus-continuum-version gnus-newsrc-file-version))))
2371 (when (or (not version)
2372 (< version 5.090009))
2373 (setq gnus-format-specs gnus-default-format-specs)))
2374 (when gnus-newsrc-assoc
2375 (setq gnus-newsrc-alist gnus-newsrc-assoc))))
01c52d31
MB
2376 (dolist (elem gnus-newsrc-alist)
2377 (setcar elem (mm-string-as-unibyte (car elem))))
eec82323
LMI
2378 (gnus-make-hashtable-from-newsrc-alist)
2379 (when (file-newer-than-file-p file ding-file)
2380 ;; Old format quick file
2381 (gnus-message 5 "Reading %s..." file)
2382 ;; The .el file is newer than the .eld file, so we read that one
2383 ;; as well.
23f87bed
MB
2384 (gnus-read-old-newsrc-el-file file)))
2385 (gnus-run-hooks 'gnus-read-newsrc-el-hook))
eec82323
LMI
2386
2387;; Parse the old-style quick startup file
2388(defun gnus-read-old-newsrc-el-file (file)
2389 (let (newsrc killed marked group m info)
2390 (prog1
2391 (let ((gnus-killed-assoc nil)
2392 gnus-marked-assoc gnus-newsrc-alist gnus-newsrc-assoc)
2393 (prog1
2394 (ignore-errors
2395 (load file t t t))
2396 (setq newsrc gnus-newsrc-assoc
2397 killed gnus-killed-assoc
2398 marked gnus-marked-assoc)))
2399 (setq gnus-newsrc-alist nil)
2400 (while (setq group (pop newsrc))
2401 (if (setq info (gnus-get-info (car group)))
2402 (progn
2403 (gnus-info-set-read info (cddr group))
2404 (gnus-info-set-level
2405 info (if (nth 1 group) gnus-level-default-subscribed
2406 gnus-level-default-unsubscribed))
2407 (push info gnus-newsrc-alist))
2408 (push (setq info
2409 (list (car group)
2410 (if (nth 1 group) gnus-level-default-subscribed
2411 gnus-level-default-unsubscribed)
2412 (cddr group)))
2413 gnus-newsrc-alist))
2414 ;; Copy marks into info.
2415 (when (setq m (assoc (car group) marked))
2416 (unless (nthcdr 3 info)
2417 (nconc info (list nil)))
2418 (gnus-info-set-marks
2419 info (list (cons 'tick (gnus-compress-sequence
2420 (sort (cdr m) '<) t))))))
2421 (setq newsrc killed)
2422 (while newsrc
2423 (setcar newsrc (caar newsrc))
2424 (setq newsrc (cdr newsrc)))
2425 (setq gnus-killed-list killed))
2426 ;; The .el file version of this variable does not begin with
2427 ;; "options", while the .eld version does, so we just add it if it
2428 ;; isn't there.
2429 (when
2430 gnus-newsrc-options
2431 (when (not (string-match "^ *options" gnus-newsrc-options))
2432 (setq gnus-newsrc-options (concat "options " gnus-newsrc-options)))
2433 (when (not (string-match "\n$" gnus-newsrc-options))
2434 (setq gnus-newsrc-options (concat gnus-newsrc-options "\n")))
2435 ;; Finally, if we read some options lines, we parse them.
2436 (unless (string= gnus-newsrc-options "")
2437 (gnus-newsrc-parse-options gnus-newsrc-options)))
2438
2439 (setq gnus-newsrc-alist (nreverse gnus-newsrc-alist))
2440 (gnus-make-hashtable-from-newsrc-alist)))
2441
2442(defun gnus-make-newsrc-file (file)
2443 "Make server dependent file name by catenating FILE and server host name."
2444 (let* ((file (expand-file-name file nil))
2445 (real-file (concat file "-" (nth 1 gnus-select-method))))
2446 (if (or (file-exists-p real-file)
2447 (file-exists-p (concat real-file ".el"))
2448 (file-exists-p (concat real-file ".eld")))
6748645f
LMI
2449 real-file
2450 file)))
eec82323
LMI
2451
2452(defun gnus-newsrc-to-gnus-format ()
2453 (setq gnus-newsrc-options "")
2454 (setq gnus-newsrc-options-n nil)
2455
2456 (unless gnus-active-hashtb
2457 (setq gnus-active-hashtb (gnus-make-hashtable 4096)))
2458 (let ((buf (current-buffer))
2459 (already-read (> (length gnus-newsrc-alist) 1))
2460 group subscribed options-symbol newsrc Options-symbol
2461 symbol reads num1)
2462 (goto-char (point-min))
2463 ;; We intern the symbol `options' in the active hashtb so that we
2464 ;; can `eq' against it later.
2465 (set (setq options-symbol (intern "options" gnus-active-hashtb)) nil)
2466 (set (setq Options-symbol (intern "Options" gnus-active-hashtb)) nil)
2467
2468 (while (not (eobp))
2469 ;; We first read the first word on the line by narrowing and
2470 ;; then reading into `gnus-active-hashtb'. Most groups will
2471 ;; already exist in that hashtb, so this will save some string
2472 ;; space.
2473 (narrow-to-region
2474 (point)
2475 (progn (skip-chars-forward "^ \t!:\n") (point)))
2476 (goto-char (point-min))
2477 (setq symbol
2478 (and (/= (point-min) (point-max))
2479 (let ((obarray gnus-active-hashtb)) (read buf))))
2480 (widen)
2481 ;; Now, the symbol we have read is either `options' or a group
2482 ;; name. If it is an options line, we just add it to a string.
2483 (cond
2484 ((or (eq symbol options-symbol)
2485 (eq symbol Options-symbol))
2486 (setq gnus-newsrc-options
2487 ;; This concating is quite inefficient, but since our
2488 ;; thorough studies show that approx 99.37% of all
2489 ;; .newsrc files only contain a single options line, we
2490 ;; don't give a damn, frankly, my dear.
2491 (concat gnus-newsrc-options
2492 (buffer-substring
01c52d31 2493 (point-at-bol)
eec82323
LMI
2494 ;; Options may continue on the next line.
2495 (or (and (re-search-forward "^[^ \t]" nil 'move)
01c52d31 2496 (point-at-bol))
eec82323
LMI
2497 (point)))))
2498 (forward-line -1))
2499 (symbol
2500 ;; Group names can be just numbers.
2501 (when (numberp symbol)
2502 (setq symbol (intern (int-to-string symbol) gnus-active-hashtb)))
2503 (unless (boundp symbol)
2504 (set symbol nil))
2505 ;; It was a group name.
16409b0b 2506 (setq subscribed (eq (char-after) ?:)
eec82323
LMI
2507 group (symbol-name symbol)
2508 reads nil)
2509 (if (eolp)
2510 ;; If the line ends here, this is clearly a buggy line, so
23f87bed 2511 ;; we put point a the beginning of line and let the cond
eec82323
LMI
2512 ;; below do the error handling.
2513 (beginning-of-line)
2514 ;; We skip to the beginning of the ranges.
2515 (skip-chars-forward "!: \t"))
2516 ;; We are now at the beginning of the list of read articles.
2517 ;; We read them range by range.
2518 (while
2519 (cond
2520 ((looking-at "[0-9]+")
2521 ;; We narrow and read a number instead of buffer-substring/
e9bd5782 2522 ;; string-to-number because it's faster. narrow/widen is
eec82323
LMI
2523 ;; faster than save-restriction/narrow, and save-restriction
2524 ;; produces a garbage object.
2525 (setq num1 (progn
2526 (narrow-to-region (match-beginning 0) (match-end 0))
2527 (read buf)))
2528 (widen)
2529 ;; If the next character is a dash, then this is a range.
16409b0b 2530 (if (eq (char-after) ?-)
eec82323
LMI
2531 (progn
2532 ;; We read the upper bound of the range.
2533 (forward-char 1)
2534 (if (not (looking-at "[0-9]+"))
2535 ;; This is a buggy line, by we pretend that
2536 ;; it's kinda OK. Perhaps the user should be
2537 ;; dinged?
2538 (push num1 reads)
2539 (push
2540 (cons num1
2541 (progn
2542 (narrow-to-region (match-beginning 0)
2543 (match-end 0))
2544 (read buf)))
2545 reads)
2546 (widen)))
2547 ;; It was just a simple number, so we add it to the
2548 ;; list of ranges.
2549 (push num1 reads))
2550 ;; If the next char in ?\n, then we have reached the end
2551 ;; of the line and return nil.
16409b0b
GM
2552 (not (eq (char-after) ?\n)))
2553 ((eq (char-after) ?\n)
eec82323
LMI
2554 ;; End of line, so we end.
2555 nil)
2556 (t
2557 ;; Not numbers and not eol, so this might be a buggy
2558 ;; line...
2559 (unless (eobp)
2560 ;; If it was eob instead of ?\n, we allow it.
2561 ;; The line was buggy.
2562 (setq group nil)
2563 (gnus-error 3.1 "Mangled line: %s"
01c52d31
MB
2564 (buffer-substring (point-at-bol)
2565 (point-at-eol))))
eec82323 2566 nil))
16409b0b 2567 ;; Skip past ", ". Spaces are invalid in these ranges, but
eec82323
LMI
2568 ;; we allow them, because it's a common mistake to put a
2569 ;; space after the comma.
2570 (skip-chars-forward ", "))
2571
2572 ;; We have already read .newsrc.eld, so we gently update the
2573 ;; data in the hash table with the information we have just
2574 ;; read.
2575 (when group
2576 (let ((info (gnus-get-info group))
2577 level)
2578 (if info
2579 ;; There is an entry for this file in the alist.
2580 (progn
2581 (gnus-info-set-read info (nreverse reads))
2582 ;; We update the level very gently. In fact, we
2583 ;; only change it if there's been a status change
2584 ;; from subscribed to unsubscribed, or vice versa.
2585 (setq level (gnus-info-level info))
2586 (cond ((and (<= level gnus-level-subscribed)
2587 (not subscribed))
2588 (setq level (if reads
2589 gnus-level-default-unsubscribed
2590 (1+ gnus-level-default-unsubscribed))))
2591 ((and (> level gnus-level-subscribed) subscribed)
2592 (setq level gnus-level-default-subscribed)))
2593 (gnus-info-set-level info level))
2594 ;; This is a new group.
2595 (setq info (list group
2596 (if subscribed
2597 gnus-level-default-subscribed
2598 (if reads
2599 (1+ gnus-level-subscribed)
2600 gnus-level-default-unsubscribed))
2601 (nreverse reads))))
2602 (push info newsrc)))))
2603 (forward-line 1))
2604
2605 (setq newsrc (nreverse newsrc))
2606
2607 (if (not already-read)
2608 ()
2609 ;; We now have two newsrc lists - `newsrc', which is what we
2610 ;; have read from .newsrc, and `gnus-newsrc-alist', which is
2611 ;; what we've read from .newsrc.eld. We have to merge these
2612 ;; lists. We do this by "attaching" any (foreign) groups in the
2613 ;; gnus-newsrc-alist to the (native) group that precedes them.
2614 (let ((rc (cdr gnus-newsrc-alist))
2615 (prev gnus-newsrc-alist)
2616 entry mentry)
2617 (while rc
2618 (or (null (nth 4 (car rc))) ; It's a native group.
2619 (assoc (caar rc) newsrc) ; It's already in the alist.
2620 (if (setq entry (assoc (caar prev) newsrc))
2621 (setcdr (setq mentry (memq entry newsrc))
2622 (cons (car rc) (cdr mentry)))
2623 (push (car rc) newsrc)))
2624 (setq prev rc
2625 rc (cdr rc)))))
2626
2627 (setq gnus-newsrc-alist newsrc)
2628 ;; We make the newsrc hashtb.
2629 (gnus-make-hashtable-from-newsrc-alist)
2630
2631 ;; Finally, if we read some options lines, we parse them.
2632 (unless (string= gnus-newsrc-options "")
2633 (gnus-newsrc-parse-options gnus-newsrc-options))))
2634
2635;; Parse options lines to find "options -n !all rec.all" and stuff.
2636;; The return value will be a list on the form
2637;; ((regexp1 . ignore)
2638;; (regexp2 . subscribe)...)
2639;; When handling new newsgroups, groups that match a `ignore' regexp
2640;; will be ignored, and groups that match a `subscribe' regexp will be
2641;; subscribed. A line like
2642;; options -n !all rec.all
2643;; will lead to a list that looks like
2644;; (("^rec\\..+" . subscribe)
2645;; ("^.+" . ignore))
2646;; So all "rec.*" groups will be subscribed, while all the other
2647;; groups will be ignored. Note that "options -n !all rec.all" is very
2648;; different from "options -n rec.all !all".
2649(defun gnus-newsrc-parse-options (options)
2650 (let (out eol)
2651 (save-excursion
2652 (gnus-set-work-buffer)
2653 (insert (regexp-quote options))
2654 ;; First we treat all continuation lines.
2655 (goto-char (point-min))
2656 (while (re-search-forward "\n[ \t]+" nil t)
2657 (replace-match " " t t))
2658 ;; Then we transform all "all"s into ".+"s.
2659 (goto-char (point-min))
2660 (while (re-search-forward "\\ball\\b" nil t)
2661 (replace-match ".+" t t))
2662 (goto-char (point-min))
2663 ;; We remove all other options than the "-n" ones.
2664 (while (re-search-forward "[ \t]-[^n][^-]*" nil t)
2665 (replace-match " ")
2666 (forward-char -1))
2667 (goto-char (point-min))
2668
2669 ;; We are only interested in "options -n" lines - we
2670 ;; ignore the other option lines.
2671 (while (re-search-forward "[ \t]-n" nil t)
2672 (setq eol
2673 (or (save-excursion
01c52d31 2674 (and (re-search-forward "[ \t]-n" (point-at-eol) t)
eec82323 2675 (- (point) 2)))
01c52d31 2676 (point-at-eol)))
eec82323
LMI
2677 ;; Search for all "words"...
2678 (while (re-search-forward "[^ \t,\n]+" eol t)
16409b0b 2679 (if (eq (char-after (match-beginning 0)) ?!)
eec82323
LMI
2680 ;; If the word begins with a bang (!), this is a "not"
2681 ;; spec. We put this spec (minus the bang) and the
2682 ;; symbol `ignore' into the list.
2683 (push (cons (concat
2684 "^" (buffer-substring
2685 (1+ (match-beginning 0))
6748645f
LMI
2686 (match-end 0))
2687 "\\($\\|\\.\\)")
eec82323
LMI
2688 'ignore)
2689 out)
2690 ;; There was no bang, so this is a "yes" spec.
6748645f 2691 (push (cons (concat "^" (match-string 0) "\\($\\|\\.\\)")
eec82323
LMI
2692 'subscribe)
2693 out))))
2694
2695 (setq gnus-newsrc-options-n out))))
2696
23f87bed
MB
2697(eval-and-compile
2698 (defalias 'gnus-long-file-names
2699 (if (fboundp 'msdos-long-file-names)
2700 'msdos-long-file-names
2701 (lambda () t))))
2702
eec82323
LMI
2703(defun gnus-save-newsrc-file (&optional force)
2704 "Save .newsrc file."
2705 ;; Note: We cannot save .newsrc file if all newsgroups are removed
2706 ;; from the variable gnus-newsrc-alist.
2707 (when (and (or gnus-newsrc-alist gnus-killed-list)
2708 gnus-current-startup-file)
54506618
MB
2709 ;; Save agent range limits for the currently active method.
2710 (when gnus-agent
2711 (gnus-agent-save-local force))
2712
eec82323
LMI
2713 (save-excursion
2714 (if (and (or gnus-use-dribble-file gnus-slave)
2715 (not force)
2716 (or (not gnus-dribble-buffer)
2717 (not (buffer-name gnus-dribble-buffer))
20a673b2 2718 (zerop (with-current-buffer gnus-dribble-buffer
eec82323
LMI
2719 (buffer-size)))))
2720 (gnus-message 4 "(No changes need to be saved)")
6748645f 2721 (gnus-run-hooks 'gnus-save-newsrc-hook)
eec82323
LMI
2722 (if gnus-slave
2723 (gnus-slave-save-newsrc)
2724 ;; Save .newsrc.
2725 (when gnus-save-newsrc-file
2726 (gnus-message 8 "Saving %s..." gnus-current-startup-file)
2727 (gnus-gnus-to-newsrc-format)
2728 (gnus-message 8 "Saving %s...done" gnus-current-startup-file))
54506618 2729
eec82323 2730 ;; Save .newsrc.eld.
6748645f 2731 (set-buffer (gnus-get-buffer-create " *Gnus-newsrc*"))
eec82323 2732 (make-local-variable 'version-control)
23f87bed 2733 (setq version-control gnus-backup-startup-file)
eec82323
LMI
2734 (setq buffer-file-name
2735 (concat gnus-current-startup-file ".eld"))
2736 (setq default-directory (file-name-directory buffer-file-name))
16409b0b 2737 (buffer-disable-undo)
eec82323 2738 (erase-buffer)
23f87bed
MB
2739 (gnus-message 5 "Saving %s.eld..." gnus-current-startup-file)
2740
2741 (if gnus-save-startup-file-via-temp-buffer
2742 (let ((coding-system-for-write gnus-ding-file-coding-system)
2743 (standard-output (current-buffer)))
2744 (gnus-gnus-to-quick-newsrc-format)
2745 (gnus-run-hooks 'gnus-save-quick-newsrc-hook)
2746 (save-buffer))
2747 (let ((coding-system-for-write gnus-ding-file-coding-system)
2748 (version-control gnus-backup-startup-file)
2749 (startup-file (concat gnus-current-startup-file ".eld"))
2750 (working-dir (file-name-directory gnus-current-startup-file))
2751 working-file
2752 (i -1))
2753 ;; Generate the name of a non-existent file.
2754 (while (progn (setq working-file
2755 (format
2756 (if (and (eq system-type 'ms-dos)
2757 (not (gnus-long-file-names)))
2758 "%s#%d.tm#" ; MSDOS limits files to 8+3
7c2fb837 2759 "%s#tmp#%d")
23f87bed
MB
2760 working-dir (setq i (1+ i))))
2761 (file-exists-p working-file)))
2762
2763 (unwind-protect
2764 (progn
2765 (gnus-with-output-to-file working-file
2766 (gnus-gnus-to-quick-newsrc-format)
2767 (gnus-run-hooks 'gnus-save-quick-newsrc-hook))
2768
2769 ;; These bindings will mislead the current buffer
2770 ;; into thinking that it is visiting the startup
2771 ;; file.
2772 (let ((buffer-backed-up nil)
2773 (buffer-file-name startup-file)
2774 (file-precious-flag t)
2775 (setmodes (file-modes startup-file)))
2776 ;; Backup the current version of the startup file.
2777 (backup-buffer)
2778
2779 ;; Replace the existing startup file with the temp file.
2780 (rename-file working-file startup-file t)
01c52d31 2781 (gnus-set-file-modes startup-file setmodes)))
23f87bed
MB
2782 (condition-case nil
2783 (delete-file working-file)
2784 (file-error nil)))))
2785
2786 (gnus-kill-buffer (current-buffer))
eec82323
LMI
2787 (gnus-message
2788 5 "Saving %s.eld...done" gnus-current-startup-file))
2789 (gnus-dribble-delete-file)
2790 (gnus-group-set-mode-line)))))
2791
23f87bed
MB
2792(defun gnus-gnus-to-quick-newsrc-format (&optional minimal name &rest specific-variables)
2793 "Print Gnus variables such as `gnus-newsrc-alist' in Lisp format."
627e1fdf 2794 (princ (format ";; -*- mode:emacs-lisp; coding: %s; -*-\n"
a37d67dd 2795 gnus-ding-file-coding-system))
23f87bed
MB
2796 (if name
2797 (princ (format ";; %s\n" name))
2798 (princ ";; Gnus startup file.\n"))
16409b0b 2799
23f87bed
MB
2800 (unless minimal
2801 (princ "\
6748645f
LMI
2802;; Never delete this file -- if you want to force Gnus to read the
2803;; .newsrc file (if you have one), touch .newsrc instead.\n")
23f87bed
MB
2804 (princ "(setq gnus-newsrc-file-version ")
2805 (princ (gnus-prin1-to-string gnus-version))
2806 (princ ")\n"))
2807
2808 (let* ((print-quoted t)
2809 (print-readably t)
2810 (print-escape-multibyte nil)
2811 (print-escape-nonascii t)
2812 (print-length nil)
2813 (print-level nil)
7dafe00b 2814 (print-circle nil)
23f87bed
MB
2815 (print-escape-newlines t)
2816 (gnus-killed-list
eec82323
LMI
2817 (if (and gnus-save-killed-list
2818 (stringp gnus-save-killed-list))
2819 (gnus-strip-killed-list)
2820 gnus-killed-list))
2821 (variables
23f87bed
MB
2822 (or specific-variables
2823 (if gnus-save-killed-list gnus-variable-list
2824 ;; Remove the `gnus-killed-list' from the list of variables
2825 ;; to be saved, if required.
2826 (delq 'gnus-killed-list (copy-sequence gnus-variable-list)))))
eec82323
LMI
2827 ;; Peel off the "dummy" group.
2828 (gnus-newsrc-alist (cdr gnus-newsrc-alist))
2829 variable)
2830 ;; Insert the variables into the file.
2831 (while variables
2832 (when (and (boundp (setq variable (pop variables)))
2833 (symbol-value variable))
01c52d31 2834 (princ "\n(setq ")
23f87bed
MB
2835 (princ (symbol-name variable))
2836 (princ " '")
2837 (prin1 (symbol-value variable))
2838 (princ ")\n")))))
eec82323
LMI
2839
2840(defun gnus-strip-killed-list ()
2841 "Return the killed list minus the groups that match `gnus-save-killed-list'."
2842 (let ((list gnus-killed-list)
2843 olist)
2844 (while list
6748645f 2845 (when (string-match gnus-save-killed-list (car list))
eec82323
LMI
2846 (push (car list) olist))
2847 (pop list))
2848 (nreverse olist)))
2849
2850(defun gnus-gnus-to-newsrc-format ()
2851 ;; Generate and save the .newsrc file.
20a673b2 2852 (with-current-buffer (create-file-buffer gnus-current-startup-file)
eec82323
LMI
2853 (let ((newsrc (cdr gnus-newsrc-alist))
2854 (standard-output (current-buffer))
2855 info ranges range method)
2856 (setq buffer-file-name gnus-current-startup-file)
2857 (setq default-directory (file-name-directory buffer-file-name))
16409b0b 2858 (buffer-disable-undo)
eec82323 2859 (erase-buffer)
01c52d31
MB
2860 ;; Use a unibyte buffer since group names are unibyte strings;
2861 ;; in particular, non-ASCII group names are the ones encoded by
2862 ;; a certain coding system.
2863 (mm-disable-multibyte)
eec82323
LMI
2864 ;; Write options.
2865 (when gnus-newsrc-options
2866 (insert gnus-newsrc-options))
2867 ;; Write subscribed and unsubscribed.
2868 (while (setq info (pop newsrc))
2869 ;; Don't write foreign groups to .newsrc.
2870 (when (or (null (setq method (gnus-info-method info)))
2871 (equal method "native")
2872 (inline (gnus-server-equal method gnus-select-method)))
2873 (insert (gnus-info-group info)
2874 (if (> (gnus-info-level info) gnus-level-subscribed)
2875 "!" ":"))
2876 (when (setq ranges (gnus-info-read info))
2877 (insert " ")
2878 (if (not (listp (cdr ranges)))
2879 (if (= (car ranges) (cdr ranges))
2880 (princ (car ranges))
2881 (princ (car ranges))
2882 (insert "-")
2883 (princ (cdr ranges)))
2884 (while (setq range (pop ranges))
2885 (if (or (atom range) (= (car range) (cdr range)))
2886 (princ (or (and (atom range) range) (car range)))
2887 (princ (car range))
2888 (insert "-")
2889 (princ (cdr range)))
2890 (when ranges
2891 (insert ",")))))
2892 (insert "\n")))
2893 (make-local-variable 'version-control)
2894 (setq version-control 'never)
2895 ;; It has been reported that sometime the modtime on the .newsrc
2896 ;; file seems to be off. We really do want to overwrite it, so
2897 ;; we clear the modtime here before saving. It's a bit odd,
2898 ;; though...
2899 ;; sometimes the modtime clear isn't sufficient. most brute force:
2900 ;; delete the silly thing entirely first. but this fails to provide
2901 ;; such niceties as .newsrc~ creation.
2902 (if gnus-modtime-botch
2903 (delete-file gnus-startup-file)
2904 (clear-visited-file-modtime))
6748645f 2905 (gnus-run-hooks 'gnus-save-standard-newsrc-hook)
01c52d31
MB
2906 (let ((coding-system-for-write 'raw-text))
2907 (save-buffer))
eec82323
LMI
2908 (kill-buffer (current-buffer)))))
2909
2910\f
2911;;;
2912;;; Slave functions.
2913;;;
2914
6748645f
LMI
2915(defvar gnus-slave-mode nil)
2916
2917(defun gnus-slave-mode ()
2918 "Minor mode for slave Gnusae."
bbf52f1e
SM
2919 ;; FIXME: gnus-slave-mode appears to never be set (i.e. it'll always be nil):
2920 ;; Remove, or fix and use define-minor-mode.
01c52d31 2921 (add-minor-mode 'gnus-slave-mode " Slave" (make-sparse-keymap))
6748645f
LMI
2922 (gnus-run-hooks 'gnus-slave-mode-hook))
2923
eec82323 2924(defun gnus-slave-save-newsrc ()
20a673b2 2925 (with-current-buffer gnus-dribble-buffer
eec82323 2926 (let ((slave-name
3efe5554 2927 (mm-make-temp-file (concat gnus-current-startup-file "-slave-")))
eec82323
LMI
2928 (modes (ignore-errors
2929 (file-modes (concat gnus-current-startup-file ".eld")))))
2d2820a4 2930 (let ((coding-system-for-write gnus-ding-file-coding-system))
16409b0b 2931 (gnus-write-buffer slave-name))
eec82323 2932 (when modes
01c52d31 2933 (gnus-set-file-modes slave-name modes)))))
eec82323
LMI
2934
2935(defun gnus-master-read-slave-newsrc ()
2936 (let ((slave-files
2937 (directory-files
2938 (file-name-directory gnus-current-startup-file)
2939 t (concat
2940 "^" (regexp-quote
2941 (concat
2942 (file-name-nondirectory gnus-current-startup-file)
2943 "-slave-")))
2944 t))
2945 file)
2946 (if (not slave-files)
2947 () ; There are no slave files to read.
2948 (gnus-message 7 "Reading slave newsrcs...")
20a673b2 2949 (with-current-buffer (gnus-get-buffer-create " *gnus slave*")
eec82323
LMI
2950 (setq slave-files
2951 (sort (mapcar (lambda (file)
2952 (list (nth 5 (file-attributes file)) file))
2953 slave-files)
2954 (lambda (f1 f2)
2955 (or (< (caar f1) (caar f2))
2956 (< (nth 1 (car f1)) (nth 1 (car f2)))))))
2957 (while slave-files
2958 (erase-buffer)
2959 (setq file (nth 1 (car slave-files)))
16409b0b 2960 (nnheader-insert-file-contents file)
eec82323
LMI
2961 (when (condition-case ()
2962 (progn
2963 (eval-buffer (current-buffer))
2964 t)
2965 (error
2966 (gnus-error 3.2 "Possible error in %s" file)
2967 nil))
2968 (unless gnus-slave ; Slaves shouldn't delete these files.
2969 (ignore-errors
2970 (delete-file file))))
2971 (setq slave-files (cdr slave-files))))
2972 (gnus-dribble-touch)
2973 (gnus-message 7 "Reading slave newsrcs...done"))))
2974
2975\f
2976;;;
2977;;; Group description.
2978;;;
2979
2980(defun gnus-read-all-descriptions-files ()
2981 (let ((methods (cons gnus-select-method
2982 (nconc
2983 (when (gnus-archive-server-wanted-p)
2984 (list "archive"))
2985 gnus-secondary-select-methods))))
2986 (while methods
2987 (gnus-read-descriptions-file (car methods))
2988 (setq methods (cdr methods)))
2989 t))
2990
2991(defun gnus-read-descriptions-file (&optional method)
2992 (let ((method (or method gnus-select-method))
2993 group)
2994 (when (stringp method)
2995 (setq method (gnus-server-to-method method)))
2996 ;; We create the hashtable whether we manage to read the desc file
2997 ;; to avoid trying to re-read after a failed read.
2998 (unless gnus-description-hashtb
2999 (setq gnus-description-hashtb
3000 (gnus-make-hashtable (length gnus-active-hashtb))))
3001 ;; Mark this method's desc file as read.
3002 (gnus-sethash (gnus-group-prefixed-name "" method) "Has read"
3003 gnus-description-hashtb)
3004
3005 (gnus-message 5 "Reading descriptions file via %s..." (car method))
3006 (cond
16409b0b
GM
3007 ((null (gnus-get-function method 'request-list-newsgroups t))
3008 t)
eec82323
LMI
3009 ((not (gnus-check-server method))
3010 (gnus-message 1 "Couldn't open server")
3011 nil)
3012 ((not (gnus-request-list-newsgroups method))
3013 (gnus-message 1 "Couldn't read newsgroups descriptions")
3014 nil)
3015 (t
3016 (save-excursion
bbf52f1e 3017 ;; FIXME: Shouldn't save-restriction be done after set-buffer?
eec82323
LMI
3018 (save-restriction
3019 (set-buffer nntp-server-buffer)
3020 (goto-char (point-min))
3021 (when (or (search-forward "\n.\n" nil t)
3022 (goto-char (point-max)))
3023 (beginning-of-line)
3024 (narrow-to-region (point-min) (point)))
3025 ;; If these are groups from a foreign select method, we insert the
3026 ;; group prefix in front of the group names.
3027 (and method (not (inline
3028 (gnus-server-equal
3029 (gnus-server-get-method nil method)
3030 (gnus-server-get-method
3031 nil gnus-select-method))))
3032 (let ((prefix (gnus-group-prefixed-name "" method)))
3033 (goto-char (point-min))
3034 (while (and (not (eobp))
3035 (progn (insert prefix)
3036 (zerop (forward-line 1)))))))
3037 (goto-char (point-min))
3038 (while (not (eobp))
3039 ;; If we get an error, we set group to 0, which is not a
3040 ;; symbol...
3041 (setq group
3042 (condition-case ()
3043 (let ((obarray gnus-description-hashtb))
3044 ;; Group is set to a symbol interned in this
3045 ;; hash table.
3046 (read nntp-server-buffer))
3047 (error 0)))
3048 (skip-chars-forward " \t")
3049 ;; ... which leads to this line being effectively ignored.
3050 (when (symbolp group)
23f87bed
MB
3051 (let* ((str (buffer-substring
3052 (point) (progn (end-of-line) (point))))
3053 (name (symbol-name group))
3054 (charset
3055 (or (gnus-group-name-charset method name)
3056 (gnus-parameter-charset name)
3057 gnus-default-charset)))
3058 ;; Fixme: Don't decode in unibyte mode.
3059 (when (and str charset (featurep 'mule))
3060 (setq str (mm-decode-coding-string str charset)))
0791fc56 3061 (set group str)))
eec82323
LMI
3062 (forward-line 1))))
3063 (gnus-message 5 "Reading descriptions file...done")
3064 t))))
3065
3066(defun gnus-group-get-description (group)
3067 "Get the description of a group by sending XGTITLE to the server."
3068 (when (gnus-request-group-description group)
20a673b2 3069 (with-current-buffer nntp-server-buffer
eec82323
LMI
3070 (goto-char (point-min))
3071 (when (looking-at "[^ \t]+[ \t]+\\(.*\\)")
3072 (match-string 1)))))
3073
3074;;;###autoload
3075(defun gnus-declare-backend (name &rest abilities)
23f87bed 3076 "Declare back end NAME with ABILITIES as a Gnus back end."
eec82323
LMI
3077 (setq gnus-valid-select-methods
3078 (nconc gnus-valid-select-methods
16409b0b
GM
3079 (list (apply 'list name abilities))))
3080 (gnus-redefine-select-method-widget))
eec82323
LMI
3081
3082(defun gnus-set-default-directory ()
3083 "Set the default directory in the current buffer to `gnus-default-directory'.
3084If this variable is nil, don't do anything."
3085 (setq default-directory
3086 (if (and gnus-default-directory
3087 (file-exists-p gnus-default-directory))
3088 (file-name-as-directory (expand-file-name gnus-default-directory))
3089 default-directory)))
3090
0302b80e
SM
3091(defun gnus-display-time-event-handler ()
3092 (if (and (fboundp 'display-time-event-handler)
3093 (gnus-boundp 'display-time-timer))
3094 (display-time-event-handler)))
23f87bed 3095
01c52d31
MB
3096(defun gnus-check-reasonable-setup ()
3097 ;; Check whether nnml and nnfolder share a directory.
3098 (let ((display-warn
3099 (if (fboundp 'display-warning)
3100 'display-warning
3101 (lambda (type message)
3102 (if noninteractive
3103 (message "Warning (%s): %s" type message)
3104 (let (window)
3105 (with-current-buffer (get-buffer-create "*Warnings*")
3106 (goto-char (point-max))
3107 (unless (bolp)
3108 (insert "\n"))
3109 (insert (format "Warning (%s): %s\n" type message))
3110 (setq window (display-buffer (current-buffer)))
3111 (set-window-start
3112 window
3113 (prog2
3114 (forward-line (- 1 (window-height window)))
3115 (point)
3116 (goto-char (point-max))))))))))
3117 method active actives match)
3118 (dolist (server gnus-server-alist)
3119 (setq method (gnus-server-to-method server)
3120 active (intern (format "%s-active-file" (car method))))
3121 (when (and (member (car method) '(nnml nnfolder))
3122 (gnus-server-opened method)
3123 (boundp active))
3124 (when (setq match (assoc (symbol-value active) actives))
3125 (funcall display-warn 'gnus-server
3126 (format "%s and %s share the same active file %s"
3127 (car method)
3128 (cadr match)
3129 (car match))))
3130 (push (list (symbol-value active) method) actives)))))
23f87bed 3131
eec82323
LMI
3132(provide 'gnus-start)
3133
3134;;; gnus-start.el ends here