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diff --git a/lisp/gnus/gnus-start.el b/lisp/gnus/gnus-start.el new file mode 100644 index 00000000000..be0017e7f03 --- /dev/null +++ b/lisp/gnus/gnus-start.el @@ -0,0 +1,2461 @@ +;;; gnus-start.el --- startup functions for Gnus +;; Copyright (C) 1996,97 Free Software Foundation, Inc. + +;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no> +;; Keywords: news + +;; This file is part of GNU Emacs. + +;; GNU Emacs is free software; you can redistribute it and/or modify +;; it under the terms of the GNU General Public License as published by +;; the Free Software Foundation; either version 2, or (at your option) +;; any later version. + +;; GNU Emacs is distributed in the hope that it will be useful, +;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;; GNU General Public License for more details. + +;; You should have received a copy of the GNU General Public License +;; along with GNU Emacs; see the file COPYING. If not, write to the +;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, +;; Boston, MA 02111-1307, USA. + +;;; Commentary: + +;;; Code: + +(require 'gnus) +(require 'gnus-win) +(require 'gnus-int) +(require 'gnus-spec) +(require 'gnus-range) +(require 'gnus-util) +(require 'message) + +(defcustom gnus-startup-file (nnheader-concat gnus-home-directory ".newsrc") + "Your `.newsrc' file. +`.newsrc-SERVER' will be used instead if that exists." + :group 'gnus-start + :type 'file) + +(defcustom gnus-init-file (nnheader-concat gnus-home-directory ".gnus") + "Your Gnus elisp startup file. +If a file with the .el or .elc suffixes exist, it will be read +instead." + :group 'gnus-start + :type 'file) + +(defcustom gnus-site-init-file + (ignore-errors + (concat (file-name-directory + (directory-file-name installation-directory)) + "site-lisp/gnus-init")) + "The site-wide Gnus elisp startup file. +If a file with the .el or .elc suffixes exist, it will be read +instead." + :group 'gnus-start + :type 'file) + +(defcustom gnus-default-subscribed-newsgroups nil + "This variable lists what newsgroups should be subscribed the first time Gnus is used. +It should be a list of strings. +If it is `t', Gnus will not do anything special the first time it is +started; it'll just use the normal newsgroups subscription methods." + :group 'gnus-start + :type '(repeat string)) + +(defcustom gnus-use-dribble-file t + "*Non-nil means that Gnus will use a dribble file to store user updates. +If Emacs should crash without saving the .newsrc files, complete +information can be restored from the dribble file." + :group 'gnus-dribble-file + :type 'boolean) + +(defcustom gnus-dribble-directory nil + "*The directory where dribble files will be saved. +If this variable is nil, the directory where the .newsrc files are +saved will be used." + :group 'gnus-dribble-file + :type '(choice directory (const nil))) + +(defcustom gnus-check-new-newsgroups t + "*Non-nil means that Gnus will run gnus-find-new-newsgroups at startup. +This normally finds new newsgroups by comparing the active groups the +servers have already reported with those Gnus already knows, either alive +or killed. + +When any of the following are true, gnus-find-new-newsgroups will instead +ask the servers (primary, secondary, and archive servers) to list new +groups since the last time it checked: + 1. This variable is `ask-server'. + 2. This variable is a list of select methods (see below). + 3. `gnus-read-active-file' is nil or `some'. + 4. A prefix argument is given to gnus-find-new-newsgroups interactively. + +Thus, if this variable is `ask-server' or a list of select methods or +`gnus-read-active-file' is nil or `some', then the killed list is no +longer necessary, so you could safely set `gnus-save-killed-list' to nil. + +This variable can be a list of select methods which Gnus will query with +the `ask-server' method in addition to the primary, secondary, and archive +servers. + +Eg. + (setq gnus-check-new-newsgroups + '((nntp \"some.server\") (nntp \"other.server\"))) + +If this variable is nil, then you have to tell Gnus explicitly to +check for new newsgroups with \\<gnus-group-mode-map>\\[gnus-find-new-newsgroups]." + :group 'gnus-start + :type '(choice (const :tag "no" nil) + (const :tag "by brute force" t) + (const :tag "ask servers" ask-server) + (repeat :menu-tag "ask additional servers" + :tag "ask additional servers" + :value ((nntp "")) + (sexp :format "%v")))) + +(defcustom gnus-check-bogus-newsgroups nil + "*Non-nil means that Gnus will check and remove bogus newsgroup at startup. +If this variable is nil, then you have to tell Gnus explicitly to +check for bogus newsgroups with \\<gnus-group-mode-map>\\[gnus-group-check-bogus-groups]." + :group 'gnus-start-server + :type 'boolean) + +(defcustom gnus-read-active-file t + "*Non-nil means that Gnus will read the entire active file at startup. +If this variable is nil, Gnus will only know about the groups in your +`.newsrc' file. + +If this variable is `some', Gnus will try to only read the relevant +parts of the active file from the server. Not all servers support +this, and it might be quite slow with other servers, but this should +generally be faster than both the t and nil value. + +If you set this variable to nil or `some', you probably still want to +be told about new newsgroups that arrive. To do that, set +`gnus-check-new-newsgroups' to `ask-server'. This may not work +properly with all servers." + :group 'gnus-start-server + :type '(choice (const nil) + (const some) + (const t))) + +(defcustom gnus-level-subscribed 5 + "*Groups with levels less than or equal to this variable are subscribed." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-level-unsubscribed 7 + "*Groups with levels less than or equal to this variable are unsubscribed. +Groups with levels less than `gnus-level-subscribed', which should be +less than this variable, are subscribed." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-level-zombie 8 + "*Groups with this level are zombie groups." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-level-killed 9 + "*Groups with this level are killed." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-level-default-subscribed 3 + "*New subscribed groups will be subscribed at this level." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-level-default-unsubscribed 6 + "*New unsubscribed groups will be unsubscribed at this level." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-activate-level (1+ gnus-level-subscribed) + "*Groups higher than this level won't be activated on startup. +Setting this variable to something low might save lots of time when +you have many groups that you aren't interested in." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-activate-foreign-newsgroups 4 + "*If nil, Gnus will not check foreign newsgroups at startup. +If it is non-nil, it should be a number between one and nine. Foreign +newsgroups that have a level lower or equal to this number will be +activated on startup. For instance, if you want to active all +subscribed newsgroups, but not the rest, you'd set this variable to +`gnus-level-subscribed'. + +If you subscribe to lots of newsgroups from different servers, startup +might take a while. By setting this variable to nil, you'll save time, +but you won't be told how many unread articles there are in the +groups." + :group 'gnus-group-levels + :type 'integer) + +(defcustom gnus-save-newsrc-file t + "*Non-nil means that Gnus will save the `.newsrc' file. +Gnus always saves its own startup file, which is called +\".newsrc.eld\". The file called \".newsrc\" is in a format that can +be readily understood by other newsreaders. If you don't plan on +using other newsreaders, set this variable to nil to save some time on +exit." + :group 'gnus-newsrc + :type 'boolean) + +(defcustom gnus-save-killed-list t + "*If non-nil, save the list of killed groups to the startup file. +If you set this variable to nil, you'll save both time (when starting +and quitting) and space (both memory and disk), but it will also mean +that Gnus has no record of which groups are new and which are old, so +the automatic new newsgroups subscription methods become meaningless. + +You should always set `gnus-check-new-newsgroups' to `ask-server' or +nil if you set this variable to nil. + +This variable can also be a regexp. In that case, all groups that do +not match this regexp will be removed before saving the list." + :group 'gnus-newsrc + :type 'boolean) + +(defcustom gnus-ignored-newsgroups + (purecopy (mapconcat 'identity + '("^to\\." ; not "real" groups + "^[0-9. \t]+ " ; all digits in name + "[][\"#'()]" ; bogus characters + ) + "\\|")) + "A regexp to match uninteresting newsgroups in the active file. +Any lines in the active file matching this regular expression are +removed from the newsgroup list before anything else is done to it, +thus making them effectively non-existent." + :group 'gnus-group-new + :type 'regexp) + +(defcustom gnus-subscribe-newsgroup-method 'gnus-subscribe-zombies + "*Function called with a group name when new group is detected. +A few pre-made functions are supplied: `gnus-subscribe-randomly' +inserts new groups at the beginning of the list of groups; +`gnus-subscribe-alphabetically' inserts new groups in strict +alphabetic order; `gnus-subscribe-hierarchically' inserts new groups +in hierarchical newsgroup order; `gnus-subscribe-interactively' asks +for your decision; `gnus-subscribe-killed' kills all new groups; +`gnus-subscribe-zombies' will make all new groups into zombies." + :group 'gnus-group-new + :type '(radio (function-item gnus-subscribe-randomly) + (function-item gnus-subscribe-alphabetically) + (function-item gnus-subscribe-hierarchically) + (function-item gnus-subscribe-interactively) + (function-item gnus-subscribe-killed) + (function-item gnus-subscribe-zombies) + function)) + +;; Suggested by a bug report by Hallvard B Furuseth. +;; <h.b.furuseth@usit.uio.no>. +(defcustom gnus-subscribe-options-newsgroup-method + 'gnus-subscribe-alphabetically + "*This function is called to subscribe newsgroups mentioned on \"options -n\" lines. +If, for instance, you want to subscribe to all newsgroups in the +\"no\" and \"alt\" hierarchies, you'd put the following in your +.newsrc file: + +options -n no.all alt.all + +Gnus will the subscribe all new newsgroups in these hierarchies with +the subscription method in this variable." + :group 'gnus-group-new + :type '(radio (function-item gnus-subscribe-randomly) + (function-item gnus-subscribe-alphabetically) + (function-item gnus-subscribe-hierarchically) + (function-item gnus-subscribe-interactively) + (function-item gnus-subscribe-killed) + (function-item gnus-subscribe-zombies) + function)) + +(defcustom gnus-subscribe-hierarchical-interactive nil + "*If non-nil, Gnus will offer to subscribe hierarchically. +When a new hierarchy appears, Gnus will ask the user: + +'alt.binaries': Do you want to subscribe to this hierarchy? ([d]ys): + +If the user pressed `d', Gnus will descend the hierarchy, `y' will +subscribe to all newsgroups in the hierarchy and `s' will skip this +hierarchy in its entirety." + :group 'gnus-group-new + :type 'boolean) + +(defcustom gnus-auto-subscribed-groups + "^nnml\\|^nnfolder\\|^nnmbox\\|^nnmh\\|^nnbabyl" + "*All new groups that match this regexp will be subscribed automatically. +Note that this variable only deals with new groups. It has no effect +whatsoever on old groups. + +New groups that match this regexp will not be handled by +`gnus-subscribe-newsgroup-method'. Instead, they will +be subscribed using `gnus-subscribe-options-newsgroup-method'." + :group 'gnus-group-new + :type 'regexp) + +(defcustom gnus-options-subscribe nil + "*All new groups matching this regexp will be subscribed unconditionally. +Note that this variable deals only with new newsgroups. This variable +does not affect old newsgroups. + +New groups that match this regexp will not be handled by +`gnus-subscribe-newsgroup-method'. Instead, they will +be subscribed using `gnus-subscribe-options-newsgroup-method'." + :group 'gnus-group-new + :type '(choice regexp + (const :tag "none" nil))) + +(defcustom gnus-options-not-subscribe nil + "*All new groups matching this regexp will be ignored. +Note that this variable deals only with new newsgroups. This variable +does not affect old (already subscribed) newsgroups." + :group 'gnus-group-new + :type '(choice regexp + (const :tag "none" nil))) + +(defcustom gnus-modtime-botch nil + "*Non-nil means .newsrc should be deleted prior to save. +Its use is due to the bogus appearance that .newsrc was modified on +disc." + :group 'gnus-newsrc + :type 'boolean) + +(defcustom gnus-check-bogus-groups-hook nil + "A hook run after removing bogus groups." + :group 'gnus-start-server + :type 'hook) + +(defcustom gnus-startup-hook nil + "A hook called at startup. +This hook is called after Gnus is connected to the NNTP server." + :group 'gnus-start + :type 'hook) + +(defcustom gnus-started-hook nil + "A hook called as the last thing after startup." + :group 'gnus-start + :type 'hook) + +(defcustom gnus-get-new-news-hook nil + "A hook run just before Gnus checks for new news." + :group 'gnus-group-new + :type 'hook) + +(defcustom gnus-after-getting-new-news-hook + (when (gnus-boundp 'display-time-timer) + '(display-time-event-handler)) + "A hook run after Gnus checks for new news." + :group 'gnus-group-new + :type 'hook) + +(defcustom gnus-save-newsrc-hook nil + "A hook called before saving any of the newsrc files." + :group 'gnus-newsrc + :type 'hook) + +(defcustom gnus-save-quick-newsrc-hook nil + "A hook called just before saving the quick newsrc file. +Can be used to turn version control on or off." + :group 'gnus-newsrc + :type 'hook) + +(defcustom gnus-save-standard-newsrc-hook nil + "A hook called just before saving the standard newsrc file. +Can be used to turn version control on or off." + :group 'gnus-newsrc + :type 'hook) + +;;; Internal variables + +(defvar gnus-newsrc-file-version nil) +(defvar gnus-override-subscribe-method nil) +(defvar gnus-dribble-buffer nil) +(defvar gnus-newsrc-options nil + "Options line in the .newsrc file.") + +(defvar gnus-newsrc-options-n nil + "List of regexps representing groups to be subscribed/ignored unconditionally.") + +(defvar gnus-newsrc-last-checked-date nil + "Date Gnus last asked server for new newsgroups.") + +(defvar gnus-current-startup-file nil + "Startup file for the current host.") + +;; Byte-compiler warning. +(defvar gnus-group-line-format) + +;; Suggested by Brian Edmonds <edmonds@cs.ubc.ca>. +(defvar gnus-init-inhibit nil) +(defun gnus-read-init-file (&optional inhibit-next) + ;; Don't load .gnus if the -q option was used. + (when init-file-user + (if gnus-init-inhibit + (setq gnus-init-inhibit nil) + (setq gnus-init-inhibit inhibit-next) + (let ((files (list gnus-site-init-file gnus-init-file)) + file) + (while files + (and (setq file (pop files)) + (or (and (file-exists-p file) + ;; Don't try to load a directory. + (not (file-directory-p file))) + (file-exists-p (concat file ".el")) + (file-exists-p (concat file ".elc"))) + (condition-case var + (load file nil t) + (error + (error "Error in %s: %s" file var))))))))) + +;; For subscribing new newsgroup + +(defun gnus-subscribe-hierarchical-interactive (groups) + (let ((groups (sort groups 'string<)) + prefixes prefix start ans group starts) + (while groups + (setq prefixes (list "^")) + (while (and groups prefixes) + (while (not (string-match (car prefixes) (car groups))) + (setq prefixes (cdr prefixes))) + (setq prefix (car prefixes)) + (setq start (1- (length prefix))) + (if (and (string-match "[^\\.]\\." (car groups) start) + (cdr groups) + (setq prefix + (concat "^" (substring (car groups) 0 (match-end 0)))) + (string-match prefix (cadr groups))) + (progn + (push prefix prefixes) + (message "Descend hierarchy %s? ([y]nsq): " + (substring prefix 1 (1- (length prefix)))) + (while (not (memq (setq ans (read-char)) '(?y ?\n ?\r ?n ?s ?q))) + (ding) + (message "Descend hierarchy %s? ([y]nsq): " + (substring prefix 1 (1- (length prefix))))) + (cond ((= ans ?n) + (while (and groups + (string-match prefix + (setq group (car groups)))) + (push group gnus-killed-list) + (gnus-sethash group group gnus-killed-hashtb) + (setq groups (cdr groups))) + (setq starts (cdr starts))) + ((= ans ?s) + (while (and groups + (string-match prefix + (setq group (car groups)))) + (gnus-sethash group group gnus-killed-hashtb) + (gnus-subscribe-alphabetically (car groups)) + (setq groups (cdr groups))) + (setq starts (cdr starts))) + ((= ans ?q) + (while groups + (setq group (car groups)) + (push group gnus-killed-list) + (gnus-sethash group group gnus-killed-hashtb) + (setq groups (cdr groups)))) + (t nil))) + (message "Subscribe %s? ([n]yq)" (car groups)) + (while (not (memq (setq ans (read-char)) '(?y ?\n ?\r ?q ?n))) + (ding) + (message "Subscribe %s? ([n]yq)" (car groups))) + (setq group (car groups)) + (cond ((= ans ?y) + (gnus-subscribe-alphabetically (car groups)) + (gnus-sethash group group gnus-killed-hashtb)) + ((= ans ?q) + (while groups + (setq group (car groups)) + (push group gnus-killed-list) + (gnus-sethash group group gnus-killed-hashtb) + (setq groups (cdr groups)))) + (t + (push group gnus-killed-list) + (gnus-sethash group group gnus-killed-hashtb))) + (setq groups (cdr groups))))))) + +(defun gnus-subscribe-randomly (newsgroup) + "Subscribe new NEWSGROUP by making it the first newsgroup." + (gnus-subscribe-newsgroup newsgroup)) + +(defun gnus-subscribe-alphabetically (newgroup) + "Subscribe new NEWSGROUP and insert it in alphabetical order." + (let ((groups (cdr gnus-newsrc-alist)) + before) + (while (and (not before) groups) + (if (string< newgroup (caar groups)) + (setq before (caar groups)) + (setq groups (cdr groups)))) + (gnus-subscribe-newsgroup newgroup before))) + +(defun gnus-subscribe-hierarchically (newgroup) + "Subscribe new NEWSGROUP and insert it in hierarchical newsgroup order." + ;; Basic ideas by mike-w@cs.aukuni.ac.nz (Mike Williams) + (save-excursion + (set-buffer (nnheader-find-file-noselect gnus-current-startup-file)) + (let ((groupkey newgroup) + before) + (while (and (not before) groupkey) + (goto-char (point-min)) + (let ((groupkey-re + (concat "^\\(" (regexp-quote groupkey) ".*\\)[!:]"))) + (while (and (re-search-forward groupkey-re nil t) + (progn + (setq before (match-string 1)) + (string< before newgroup))))) + ;; Remove tail of newsgroup name (eg. a.b.c -> a.b) + (setq groupkey + (when (string-match "^\\(.*\\)\\.[^.]+$" groupkey) + (substring groupkey (match-beginning 1) (match-end 1))))) + (gnus-subscribe-newsgroup newgroup before)) + (kill-buffer (current-buffer)))) + +(defun gnus-subscribe-interactively (group) + "Subscribe the new GROUP interactively. +It is inserted in hierarchical newsgroup order if subscribed. If not, +it is killed." + (if (gnus-y-or-n-p (format "Subscribe new newsgroup: %s " group)) + (gnus-subscribe-hierarchically group) + (push group gnus-killed-list))) + +(defun gnus-subscribe-zombies (group) + "Make the new GROUP into a zombie group." + (push group gnus-zombie-list)) + +(defun gnus-subscribe-killed (group) + "Make the new GROUP a killed group." + (push group gnus-killed-list)) + +(defun gnus-subscribe-newsgroup (newsgroup &optional next) + "Subscribe new NEWSGROUP. +If NEXT is non-nil, it is inserted before NEXT. Otherwise it is made +the first newsgroup." + (save-excursion + (goto-char (point-min)) + ;; We subscribe the group by changing its level to `subscribed'. + (gnus-group-change-level + newsgroup gnus-level-default-subscribed + gnus-level-killed (gnus-gethash (or next "dummy.group") + gnus-newsrc-hashtb)) + (gnus-message 5 "Subscribe newsgroup: %s" newsgroup))) + +(defun gnus-read-active-file-p () + "Say whether the active file has been read from `gnus-select-method'." + (memq gnus-select-method gnus-have-read-active-file)) + +;;; General various misc type functions. + +;; Silence byte-compiler. +(defvar gnus-current-headers) +(defvar gnus-thread-indent-array) +(defvar gnus-newsgroup-name) +(defvar gnus-newsgroup-headers) +(defvar gnus-group-list-mode) +(defvar gnus-group-mark-positions) +(defvar gnus-newsgroup-data) +(defvar gnus-newsgroup-unreads) +(defvar nnoo-state-alist) +(defvar gnus-current-select-method) +(defun gnus-clear-system () + "Clear all variables and buffers." + ;; Clear Gnus variables. + (let ((variables gnus-variable-list)) + (while variables + (set (car variables) nil) + (setq variables (cdr variables)))) + ;; Clear other internal variables. + (setq gnus-list-of-killed-groups nil + gnus-have-read-active-file nil + gnus-newsrc-alist nil + gnus-newsrc-hashtb nil + gnus-killed-list nil + gnus-zombie-list nil + gnus-killed-hashtb nil + gnus-active-hashtb nil + gnus-moderated-hashtb nil + gnus-description-hashtb nil + gnus-current-headers nil + gnus-thread-indent-array nil + gnus-newsgroup-headers nil + gnus-newsgroup-name nil + gnus-server-alist nil + gnus-group-list-mode nil + gnus-opened-servers nil + gnus-group-mark-positions nil + gnus-newsgroup-data nil + gnus-newsgroup-unreads nil + nnoo-state-alist nil + gnus-current-select-method nil) + (gnus-shutdown 'gnus) + ;; Kill the startup file. + (and gnus-current-startup-file + (get-file-buffer gnus-current-startup-file) + (kill-buffer (get-file-buffer gnus-current-startup-file))) + ;; Clear the dribble buffer. + (gnus-dribble-clear) + ;; Kill global KILL file buffer. + (when (get-file-buffer (gnus-newsgroup-kill-file nil)) + (kill-buffer (get-file-buffer (gnus-newsgroup-kill-file nil)))) + (gnus-kill-buffer nntp-server-buffer) + ;; Kill Gnus buffers. + (while gnus-buffer-list + (gnus-kill-buffer (pop gnus-buffer-list))) + ;; Remove Gnus frames. + (gnus-kill-gnus-frames)) + +(defun gnus-no-server-1 (&optional arg slave) + "Read network news. +If ARG is a positive number, Gnus will use that as the +startup level. If ARG is nil, Gnus will be started at level 2. +If ARG is non-nil and not a positive number, Gnus will +prompt the user for the name of an NNTP server to use. +As opposed to `gnus', this command will not connect to the local server." + (interactive "P") + (let ((val (or arg (1- gnus-level-default-subscribed)))) + (gnus val t slave) + (make-local-variable 'gnus-group-use-permanent-levels) + (setq gnus-group-use-permanent-levels val))) + +(defun gnus-1 (&optional arg dont-connect slave) + "Read network news. +If ARG is non-nil and a positive number, Gnus will use that as the +startup level. If ARG is non-nil and not a positive number, Gnus will +prompt the user for the name of an NNTP server to use." + (interactive "P") + + (if (and (get-buffer gnus-group-buffer) + (save-excursion + (set-buffer gnus-group-buffer) + (eq major-mode 'gnus-group-mode))) + (progn + (switch-to-buffer gnus-group-buffer) + (gnus-group-get-new-news + (and (numberp arg) + (> arg 0) + (max (car gnus-group-list-mode) arg)))) + + (gnus-splash) + (gnus-clear-system) + (nnheader-init-server-buffer) + (gnus-read-init-file) + (setq gnus-slave slave) + + (when (and (string-match "XEmacs" (emacs-version)) + gnus-simple-splash) + (setq gnus-simple-splash nil) + (gnus-xmas-splash)) + + (let ((level (and (numberp arg) (> arg 0) arg)) + did-connect) + (unwind-protect + (progn + (unless dont-connect + (setq did-connect + (gnus-start-news-server (and arg (not level)))))) + (if (and (not dont-connect) + (not did-connect)) + (gnus-group-quit) + (run-hooks 'gnus-startup-hook) + ;; NNTP server is successfully open. + + ;; Find the current startup file name. + (setq gnus-current-startup-file + (gnus-make-newsrc-file gnus-startup-file)) + + ;; Read the dribble file. + (when (or gnus-slave gnus-use-dribble-file) + (gnus-dribble-read-file)) + + ;; Allow using GroupLens predictions. + (when gnus-use-grouplens + (bbb-login) + (add-hook 'gnus-summary-mode-hook 'gnus-grouplens-mode)) + + ;; Do the actual startup. + (gnus-setup-news nil level dont-connect) + ;; Generate the group buffer. + (gnus-group-list-groups level) + (gnus-group-first-unread-group) + (gnus-configure-windows 'group) + (gnus-group-set-mode-line) + (run-hooks 'gnus-started-hook)))))) + +;;;###autoload +(defun gnus-unload () + "Unload all Gnus features." + (interactive) + (unless (boundp 'load-history) + (error "Sorry, `gnus-unload' is not implemented in this Emacs version.")) + (let ((history load-history) + feature) + (while history + (and (string-match "^\\(gnus\\|nn\\)" (caar history)) + (setq feature (cdr (assq 'provide (car history)))) + (unload-feature feature 'force)) + (setq history (cdr history))))) + + +;;; +;;; Dribble file +;;; + +(defvar gnus-dribble-ignore nil) +(defvar gnus-dribble-eval-file nil) + +(defun gnus-dribble-file-name () + "Return the dribble file for the current .newsrc." + (concat + (if gnus-dribble-directory + (concat (file-name-as-directory gnus-dribble-directory) + (file-name-nondirectory gnus-current-startup-file)) + gnus-current-startup-file) + "-dribble")) + +(defun gnus-dribble-enter (string) + "Enter STRING into the dribble buffer." + (when (and (not gnus-dribble-ignore) + gnus-dribble-buffer + (buffer-name gnus-dribble-buffer)) + (let ((obuf (current-buffer))) + (set-buffer gnus-dribble-buffer) + (goto-char (point-max)) + (insert string "\n") + (set-window-point (get-buffer-window (current-buffer)) (point-max)) + (bury-buffer gnus-dribble-buffer) + (set-buffer obuf)))) + +(defun gnus-dribble-touch () + "Touch the dribble buffer." + (gnus-dribble-enter "")) + +(defun gnus-dribble-read-file () + "Read the dribble file from disk." + (let ((dribble-file (gnus-dribble-file-name))) + (save-excursion + (set-buffer (setq gnus-dribble-buffer + (get-buffer-create + (file-name-nondirectory dribble-file)))) + (gnus-add-current-to-buffer-list) + (erase-buffer) + (setq buffer-file-name dribble-file) + (auto-save-mode t) + (buffer-disable-undo (current-buffer)) + (bury-buffer (current-buffer)) + (set-buffer-modified-p nil) + (let ((auto (make-auto-save-file-name)) + (gnus-dribble-ignore t) + modes) + (when (or (file-exists-p auto) (file-exists-p dribble-file)) + ;; Load whichever file is newest -- the auto save file + ;; or the "real" file. + (if (file-newer-than-file-p auto dribble-file) + (nnheader-insert-file-contents auto) + (nnheader-insert-file-contents dribble-file)) + (unless (zerop (buffer-size)) + (set-buffer-modified-p t)) + ;; Set the file modes to reflect the .newsrc file modes. + (save-buffer) + (when (and (file-exists-p gnus-current-startup-file) + (setq modes (file-modes gnus-current-startup-file))) + (set-file-modes dribble-file modes)) + ;; Possibly eval the file later. + (when (gnus-y-or-n-p + "Gnus auto-save file exists. Do you want to read it? ") + (setq gnus-dribble-eval-file t))))))) + +(defun gnus-dribble-eval-file () + (when gnus-dribble-eval-file + (setq gnus-dribble-eval-file nil) + (save-excursion + (let ((gnus-dribble-ignore t)) + (set-buffer gnus-dribble-buffer) + (eval-buffer (current-buffer)))))) + +(defun gnus-dribble-delete-file () + (when (file-exists-p (gnus-dribble-file-name)) + (delete-file (gnus-dribble-file-name))) + (when gnus-dribble-buffer + (save-excursion + (set-buffer gnus-dribble-buffer) + (let ((auto (make-auto-save-file-name))) + (when (file-exists-p auto) + (delete-file auto)) + (erase-buffer) + (set-buffer-modified-p nil))))) + +(defun gnus-dribble-save () + (when (and gnus-dribble-buffer + (buffer-name gnus-dribble-buffer)) + (save-excursion + (set-buffer gnus-dribble-buffer) + (save-buffer)))) + +(defun gnus-dribble-clear () + (when (gnus-buffer-exists-p gnus-dribble-buffer) + (save-excursion + (set-buffer gnus-dribble-buffer) + (erase-buffer) + (set-buffer-modified-p nil) + (setq buffer-saved-size (buffer-size))))) + + +;;; +;;; Active & Newsrc File Handling +;;; + +(defun gnus-setup-news (&optional rawfile level dont-connect) + "Setup news information. +If RAWFILE is non-nil, the .newsrc file will also be read. +If LEVEL is non-nil, the news will be set up at level LEVEL." + (let ((init (not (and gnus-newsrc-alist gnus-active-hashtb (not rawfile))))) + + (when init + ;; Clear some variables to re-initialize news information. + (setq gnus-newsrc-alist nil + gnus-active-hashtb nil) + ;; Read the newsrc file and create `gnus-newsrc-hashtb'. + (gnus-read-newsrc-file rawfile)) + + (when (and (not (assoc "archive" gnus-server-alist)) + (gnus-archive-server-wanted-p)) + (push (cons "archive" gnus-message-archive-method) + gnus-server-alist)) + + ;; If we don't read the complete active file, we fill in the + ;; hashtb here. + (when (or (null gnus-read-active-file) + (eq gnus-read-active-file 'some)) + (gnus-update-active-hashtb-from-killed)) + + ;; Read the active file and create `gnus-active-hashtb'. + ;; If `gnus-read-active-file' is nil, then we just create an empty + ;; hash table. The partial filling out of the hash table will be + ;; done in `gnus-get-unread-articles'. + (and gnus-read-active-file + (not level) + (gnus-read-active-file)) + + (unless gnus-active-hashtb + (setq gnus-active-hashtb (gnus-make-hashtable 4096))) + + ;; Initialize the cache. + (when gnus-use-cache + (gnus-cache-open)) + + ;; Possibly eval the dribble file. + (and init + (or gnus-use-dribble-file gnus-slave) + (gnus-dribble-eval-file)) + + ;; Slave Gnusii should then clear the dribble buffer. + (when (and init gnus-slave) + (gnus-dribble-clear)) + + (gnus-update-format-specifications) + + ;; See whether we need to read the description file. + (when (and (boundp 'gnus-group-line-format) + (string-match "%[-,0-9]*D" gnus-group-line-format) + (not gnus-description-hashtb) + (not dont-connect) + gnus-read-active-file) + (gnus-read-all-descriptions-files)) + + ;; Find new newsgroups and treat them. + (when (and init gnus-check-new-newsgroups (not level) + (gnus-check-server gnus-select-method) + (not gnus-slave)) + (gnus-find-new-newsgroups)) + + ;; We might read in new NoCeM messages here. + (when (and gnus-use-nocem + (not level) + (not dont-connect)) + (gnus-nocem-scan-groups)) + + ;; Read any slave files. + (gnus-master-read-slave-newsrc) + + ;; Find the number of unread articles in each non-dead group. + (let ((gnus-read-active-file (and (not level) gnus-read-active-file))) + (gnus-get-unread-articles level)) + + (when (and init gnus-check-bogus-newsgroups + gnus-read-active-file (not level) + (gnus-server-opened gnus-select-method)) + (gnus-check-bogus-newsgroups)))) + +(defun gnus-find-new-newsgroups (&optional arg) + "Search for new newsgroups and add them. +Each new newsgroup will be treated with `gnus-subscribe-newsgroup-method.' +The `-n' option line from .newsrc is respected. +If ARG (the prefix), use the `ask-server' method to query +the server for new groups." + (interactive "P") + (let ((check (if (or (and arg (not (listp gnus-check-new-newsgroups))) + (null gnus-read-active-file) + (eq gnus-read-active-file 'some)) + 'ask-server gnus-check-new-newsgroups))) + (unless (gnus-check-first-time-used) + (if (or (consp check) + (eq check 'ask-server)) + ;; Ask the server for new groups. + (gnus-ask-server-for-new-groups) + ;; Go through the active hashtb and look for new groups. + (let ((groups 0) + group new-newsgroups) + (gnus-message 5 "Looking for new newsgroups...") + (unless gnus-have-read-active-file + (gnus-read-active-file)) + (setq gnus-newsrc-last-checked-date (current-time-string)) + (unless gnus-killed-hashtb + (gnus-make-hashtable-from-killed)) + ;; Go though every newsgroup in `gnus-active-hashtb' and compare + ;; with `gnus-newsrc-hashtb' and `gnus-killed-hashtb'. + (mapatoms + (lambda (sym) + (if (or (null (setq group (symbol-name sym))) + (not (boundp sym)) + (null (symbol-value sym)) + (gnus-gethash group gnus-killed-hashtb) + (gnus-gethash group gnus-newsrc-hashtb)) + () + (let ((do-sub (gnus-matches-options-n group))) + (cond + ((eq do-sub 'subscribe) + (setq groups (1+ groups)) + (gnus-sethash group group gnus-killed-hashtb) + (funcall gnus-subscribe-options-newsgroup-method group)) + ((eq do-sub 'ignore) + nil) + (t + (setq groups (1+ groups)) + (gnus-sethash group group gnus-killed-hashtb) + (if gnus-subscribe-hierarchical-interactive + (push group new-newsgroups) + (funcall gnus-subscribe-newsgroup-method group))))))) + gnus-active-hashtb) + (when new-newsgroups + (gnus-subscribe-hierarchical-interactive new-newsgroups)) + (if (> groups 0) + (gnus-message 5 "%d new newsgroup%s arrived." + groups (if (> groups 1) "s have" " has")) + (gnus-message 5 "No new newsgroups."))))))) + +(defun gnus-matches-options-n (group) + ;; Returns `subscribe' if the group is to be unconditionally + ;; subscribed, `ignore' if it is to be ignored, and nil if there is + ;; no match for the group. + + ;; First we check the two user variables. + (cond + ((and gnus-options-subscribe + (string-match gnus-options-subscribe group)) + 'subscribe) + ((and gnus-auto-subscribed-groups + (string-match gnus-auto-subscribed-groups group)) + 'subscribe) + ((and gnus-options-not-subscribe + (string-match gnus-options-not-subscribe group)) + 'ignore) + ;; Then we go through the list that was retrieved from the .newsrc + ;; file. This list has elements on the form + ;; `(REGEXP . {ignore,subscribe})'. The first match found (the list + ;; is in the reverse order of the options line) is returned. + (t + (let ((regs gnus-newsrc-options-n)) + (while (and regs + (not (string-match (caar regs) group))) + (setq regs (cdr regs))) + (and regs (cdar regs)))))) + +(defun gnus-ask-server-for-new-groups () + (let* ((date (or gnus-newsrc-last-checked-date (current-time-string))) + (methods (cons gnus-select-method + (nconc + (when (gnus-archive-server-wanted-p) + (list "archive")) + (append + (and (consp gnus-check-new-newsgroups) + gnus-check-new-newsgroups) + gnus-secondary-select-methods)))) + (groups 0) + (new-date (current-time-string)) + group new-newsgroups got-new method hashtb + gnus-override-subscribe-method) + ;; Go through both primary and secondary select methods and + ;; request new newsgroups. + (while (setq method (gnus-server-get-method nil (pop methods))) + (setq new-newsgroups nil) + (setq gnus-override-subscribe-method method) + (when (and (gnus-check-server method) + (gnus-request-newgroups date method)) + (save-excursion + (setq got-new t) + (setq hashtb (gnus-make-hashtable 100)) + (set-buffer nntp-server-buffer) + ;; Enter all the new groups into a hashtable. + (gnus-active-to-gnus-format method hashtb 'ignore)) + ;; Now all new groups from `method' are in `hashtb'. + (mapatoms + (lambda (group-sym) + (if (or (null (setq group (symbol-name group-sym))) + (not (boundp group-sym)) + (null (symbol-value group-sym)) + (gnus-gethash group gnus-newsrc-hashtb) + (member group gnus-zombie-list) + (member group gnus-killed-list)) + ;; The group is already known. + () + ;; Make this group active. + (when (symbol-value group-sym) + (gnus-set-active group (symbol-value group-sym))) + ;; Check whether we want it or not. + (let ((do-sub (gnus-matches-options-n group))) + (cond + ((eq do-sub 'subscribe) + (incf groups) + (gnus-sethash group group gnus-killed-hashtb) + (funcall gnus-subscribe-options-newsgroup-method group)) + ((eq do-sub 'ignore) + nil) + (t + (incf groups) + (gnus-sethash group group gnus-killed-hashtb) + (if gnus-subscribe-hierarchical-interactive + (push group new-newsgroups) + (funcall gnus-subscribe-newsgroup-method group))))))) + hashtb)) + (when new-newsgroups + (gnus-subscribe-hierarchical-interactive new-newsgroups))) + ;; Suggested by Per Abrahamsen <amanda@iesd.auc.dk>. + (when (> groups 0) + (gnus-message 6 "%d new newsgroup%s arrived." + groups (if (> groups 1) "s have" " has"))) + (when got-new + (setq gnus-newsrc-last-checked-date new-date)) + got-new)) + +(defun gnus-check-first-time-used () + (if (or (> (length gnus-newsrc-alist) 1) + (file-exists-p gnus-startup-file) + (file-exists-p (concat gnus-startup-file ".el")) + (file-exists-p (concat gnus-startup-file ".eld"))) + nil + (gnus-message 6 "First time user; subscribing you to default groups") + (unless (gnus-read-active-file-p) + (gnus-read-active-file)) + (setq gnus-newsrc-last-checked-date (current-time-string)) + (let ((groups gnus-default-subscribed-newsgroups) + group) + (if (eq groups t) + nil + (setq groups (or groups gnus-backup-default-subscribed-newsgroups)) + (mapatoms + (lambda (sym) + (if (null (setq group (symbol-name sym))) + () + (let ((do-sub (gnus-matches-options-n group))) + (cond + ((eq do-sub 'subscribe) + (gnus-sethash group group gnus-killed-hashtb) + (funcall gnus-subscribe-options-newsgroup-method group)) + ((eq do-sub 'ignore) + nil) + (t + (push group gnus-killed-list)))))) + gnus-active-hashtb) + (while groups + (when (gnus-active (car groups)) + (gnus-group-change-level + (car groups) gnus-level-default-subscribed gnus-level-killed)) + (setq groups (cdr groups))) + (gnus-group-make-help-group) + (when gnus-novice-user + (gnus-message 7 "`A k' to list killed groups")))))) + +(defun gnus-subscribe-group (group previous &optional method) + (gnus-group-change-level + (if method + (list t group gnus-level-default-subscribed nil nil method) + group) + gnus-level-default-subscribed gnus-level-killed previous t)) + +;; `gnus-group-change-level' is the fundamental function for changing +;; subscription levels of newsgroups. This might mean just changing +;; from level 1 to 2, which is pretty trivial, from 2 to 6 or back +;; again, which subscribes/unsubscribes a group, which is equally +;; trivial. Changing from 1-7 to 8-9 means that you kill a group, and +;; from 8-9 to 1-7 means that you remove the group from the list of +;; killed (or zombie) groups and add them to the (kinda) subscribed +;; groups. And last but not least, moving from 8 to 9 and 9 to 8, +;; which is trivial. +;; ENTRY can either be a string (newsgroup name) or a list (if +;; FROMKILLED is t, it's a list on the format (NUM INFO-LIST), +;; otherwise it's a list in the format of the `gnus-newsrc-hashtb' +;; entries. +;; LEVEL is the new level of the group, OLDLEVEL is the old level and +;; PREVIOUS is the group (in hashtb entry format) to insert this group +;; after. +(defun gnus-group-change-level (entry level &optional oldlevel + previous fromkilled) + (let (group info active num) + ;; Glean what info we can from the arguments + (if (consp entry) + (if fromkilled (setq group (nth 1 entry)) + (setq group (car (nth 2 entry)))) + (setq group entry)) + (when (and (stringp entry) + oldlevel + (< oldlevel gnus-level-zombie)) + (setq entry (gnus-gethash entry gnus-newsrc-hashtb))) + (if (and (not oldlevel) + (consp entry)) + (setq oldlevel (gnus-info-level (nth 2 entry))) + (setq oldlevel (or oldlevel 9))) + (when (stringp previous) + (setq previous (gnus-gethash previous gnus-newsrc-hashtb))) + + (if (and (>= oldlevel gnus-level-zombie) + (gnus-gethash group gnus-newsrc-hashtb)) + ;; We are trying to subscribe a group that is already + ;; subscribed. + () ; Do nothing. + + (unless (gnus-ephemeral-group-p group) + (gnus-dribble-enter + (format "(gnus-group-change-level %S %S %S %S %S)" + group level oldlevel (car (nth 2 previous)) fromkilled))) + + ;; Then we remove the newgroup from any old structures, if needed. + ;; If the group was killed, we remove it from the killed or zombie + ;; list. If not, and it is in fact going to be killed, we remove + ;; it from the newsrc hash table and assoc. + (cond + ((>= oldlevel gnus-level-zombie) + (if (= oldlevel gnus-level-zombie) + (setq gnus-zombie-list (delete group gnus-zombie-list)) + (setq gnus-killed-list (delete group gnus-killed-list)))) + (t + (when (and (>= level gnus-level-zombie) + entry) + (gnus-sethash (car (nth 2 entry)) nil gnus-newsrc-hashtb) + (when (nth 3 entry) + (setcdr (gnus-gethash (car (nth 3 entry)) + gnus-newsrc-hashtb) + (cdr entry))) + (setcdr (cdr entry) (cdddr entry))))) + + ;; Finally we enter (if needed) the list where it is supposed to + ;; go, and change the subscription level. If it is to be killed, + ;; we enter it into the killed or zombie list. + (cond + ((>= level gnus-level-zombie) + ;; Remove from the hash table. + (gnus-sethash group nil gnus-newsrc-hashtb) + ;; We do not enter foreign groups into the list of dead + ;; groups. + (unless (gnus-group-foreign-p group) + (if (= level gnus-level-zombie) + (push group gnus-zombie-list) + (push group gnus-killed-list)))) + (t + ;; If the list is to be entered into the newsrc assoc, and + ;; it was killed, we have to create an entry in the newsrc + ;; hashtb format and fix the pointers in the newsrc assoc. + (if (< oldlevel gnus-level-zombie) + ;; It was alive, and it is going to stay alive, so we + ;; just change the level and don't change any pointers or + ;; hash table entries. + (setcar (cdaddr entry) level) + (if (listp entry) + (setq info (cdr entry) + num (car entry)) + (setq active (gnus-active group)) + (setq num + (if active (- (1+ (cdr active)) (car active)) t)) + ;; Check whether the group is foreign. If so, the + ;; foreign select method has to be entered into the + ;; info. + (let ((method (or gnus-override-subscribe-method + (gnus-group-method group)))) + (if (eq method gnus-select-method) + (setq info (list group level nil)) + (setq info (list group level nil nil method))))) + (unless previous + (setq previous + (let ((p gnus-newsrc-alist)) + (while (cddr p) + (setq p (cdr p))) + p))) + (setq entry (cons info (cddr previous))) + (if (cdr previous) + (progn + (setcdr (cdr previous) entry) + (gnus-sethash group (cons num (cdr previous)) + gnus-newsrc-hashtb)) + (setcdr previous entry) + (gnus-sethash group (cons num previous) + gnus-newsrc-hashtb)) + (when (cdr entry) + (setcdr (gnus-gethash (caadr entry) gnus-newsrc-hashtb) entry)) + (gnus-dribble-enter + (format + "(gnus-group-set-info '%S)" info))))) + (when gnus-group-change-level-function + (funcall gnus-group-change-level-function group level oldlevel))))) + +(defun gnus-kill-newsgroup (newsgroup) + "Obsolete function. Kills a newsgroup." + (gnus-group-change-level + (gnus-gethash newsgroup gnus-newsrc-hashtb) gnus-level-killed)) + +(defun gnus-check-bogus-newsgroups (&optional confirm) + "Remove bogus newsgroups. +If CONFIRM is non-nil, the user has to confirm the deletion of every +newsgroup." + (let ((newsrc (cdr gnus-newsrc-alist)) + bogus group entry info) + (gnus-message 5 "Checking bogus newsgroups...") + (unless (gnus-read-active-file-p) + (gnus-read-active-file t)) + (when (gnus-read-active-file-p) + ;; Find all bogus newsgroup that are subscribed. + (while newsrc + (setq info (pop newsrc) + group (gnus-info-group info)) + (unless (or (gnus-active group) ; Active + (gnus-info-method info)) ; Foreign + ;; Found a bogus newsgroup. + (push group bogus))) + (if confirm + (map-y-or-n-p + "Remove bogus group %s? " + (lambda (group) + ;; Remove all bogus subscribed groups by first killing them, and + ;; then removing them from the list of killed groups. + (when (setq entry (gnus-gethash group gnus-newsrc-hashtb)) + (gnus-group-change-level entry gnus-level-killed) + (setq gnus-killed-list (delete group gnus-killed-list)))) + bogus '("group" "groups" "remove")) + (while (setq group (pop bogus)) + ;; Remove all bogus subscribed groups by first killing them, and + ;; then removing them from the list of killed groups. + (when (setq entry (gnus-gethash group gnus-newsrc-hashtb)) + (gnus-group-change-level entry gnus-level-killed) + (setq gnus-killed-list (delete group gnus-killed-list))))) + ;; Then we remove all bogus groups from the list of killed and + ;; zombie groups. They are removed without confirmation. + (let ((dead-lists '(gnus-killed-list gnus-zombie-list)) + killed) + (while dead-lists + (setq killed (symbol-value (car dead-lists))) + (while killed + (unless (gnus-active (setq group (pop killed))) + ;; The group is bogus. + ;; !!!Slow as hell. + (set (car dead-lists) + (delete group (symbol-value (car dead-lists)))))) + (setq dead-lists (cdr dead-lists)))) + (run-hooks 'gnus-check-bogus-groups-hook) + (gnus-message 5 "Checking bogus newsgroups...done")))) + +(defun gnus-check-duplicate-killed-groups () + "Remove duplicates from the list of killed groups." + (interactive) + (let ((killed gnus-killed-list)) + (while killed + (gnus-message 9 "%d" (length killed)) + (setcdr killed (delete (car killed) (cdr killed))) + (setq killed (cdr killed))))) + +;; We want to inline a function from gnus-cache, so we cheat here: +(eval-when-compile + (defvar gnus-cache-active-hashtb) + (defun gnus-cache-possibly-alter-active (group active) + "Alter the ACTIVE info for GROUP to reflect the articles in the cache." + (when gnus-cache-active-hashtb + (let ((cache-active (gnus-gethash group gnus-cache-active-hashtb))) + (and cache-active + (< (car cache-active) (car active)) + (setcar active (car cache-active))) + (and cache-active + (> (cdr cache-active) (cdr active)) + (setcdr active (cdr cache-active))))))) + +(defun gnus-activate-group (group &optional scan dont-check method) + ;; Check whether a group has been activated or not. + ;; If SCAN, request a scan of that group as well. + (let ((method (or method (inline (gnus-find-method-for-group group)))) + active) + (and (inline (gnus-check-server method)) + ;; We escape all bugs and quit here to make it possible to + ;; continue if a group is so out-there that it reports bugs + ;; and stuff. + (progn + (and scan + (gnus-check-backend-function 'request-scan (car method)) + (gnus-request-scan group method)) + t) + (condition-case () + (inline (gnus-request-group group dont-check method)) + (error nil) + (quit nil)) + (gnus-set-active group (setq active (gnus-parse-active))) + ;; Return the new active info. + active))) + +(defun gnus-get-unread-articles-in-group (info active &optional update) + (when active + ;; Allow the backend to update the info in the group. + (when (and update + (gnus-request-update-info + info (inline (gnus-find-method-for-group + (gnus-info-group info))))) + (gnus-activate-group (gnus-info-group info) nil t)) + (let* ((range (gnus-info-read info)) + (num 0)) + ;; If a cache is present, we may have to alter the active info. + (when (and gnus-use-cache info) + (inline (gnus-cache-possibly-alter-active + (gnus-info-group info) active))) + ;; Modify the list of read articles according to what articles + ;; are available; then tally the unread articles and add the + ;; number to the group hash table entry. + (cond + ((zerop (cdr active)) + (setq num 0)) + ((not range) + (setq num (- (1+ (cdr active)) (car active)))) + ((not (listp (cdr range))) + ;; Fix a single (num . num) range according to the + ;; active hash table. + ;; Fix by Carsten Bormann <cabo@Informatik.Uni-Bremen.DE>. + (and (< (cdr range) (car active)) (setcdr range (1- (car active)))) + (and (> (cdr range) (cdr active)) (setcdr range (cdr active))) + ;; Compute number of unread articles. + (setq num (max 0 (- (cdr active) (- (1+ (cdr range)) (car range)))))) + (t + ;; The read list is a list of ranges. Fix them according to + ;; the active hash table. + ;; First peel off any elements that are below the lower + ;; active limit. + (while (and (cdr range) + (>= (car active) + (or (and (atom (cadr range)) (cadr range)) + (caadr range)))) + (if (numberp (car range)) + (setcar range + (cons (car range) + (or (and (numberp (cadr range)) + (cadr range)) + (cdadr range)))) + (setcdr (car range) + (or (and (numberp (nth 1 range)) (nth 1 range)) + (cdadr range)))) + (setcdr range (cddr range))) + ;; Adjust the first element to be the same as the lower limit. + (when (and (not (atom (car range))) + (< (cdar range) (car active))) + (setcdr (car range) (1- (car active)))) + ;; Then we want to peel off any elements that are higher + ;; than the upper active limit. + (let ((srange range)) + ;; Go past all legal elements. + (while (and (cdr srange) + (<= (or (and (atom (cadr srange)) + (cadr srange)) + (caadr srange)) + (cdr active))) + (setq srange (cdr srange))) + (when (cdr srange) + ;; Nuke all remaining illegal elements. + (setcdr srange nil)) + + ;; Adjust the final element. + (when (and (not (atom (car srange))) + (> (cdar srange) (cdr active))) + (setcdr (car srange) (cdr active)))) + ;; Compute the number of unread articles. + (while range + (setq num (+ num (- (1+ (or (and (atom (car range)) (car range)) + (cdar range))) + (or (and (atom (car range)) (car range)) + (caar range))))) + (setq range (cdr range))) + (setq num (max 0 (- (cdr active) num))))) + ;; Set the number of unread articles. + (when info + (setcar (gnus-gethash (gnus-info-group info) gnus-newsrc-hashtb) num)) + num))) + +;; Go though `gnus-newsrc-alist' and compare with `gnus-active-hashtb' +;; and compute how many unread articles there are in each group. +(defun gnus-get-unread-articles (&optional level) + (let* ((newsrc (cdr gnus-newsrc-alist)) + (level (or level gnus-activate-level (1+ gnus-level-subscribed))) + (foreign-level + (min + (cond ((and gnus-activate-foreign-newsgroups + (not (numberp gnus-activate-foreign-newsgroups))) + (1+ gnus-level-subscribed)) + ((numberp gnus-activate-foreign-newsgroups) + gnus-activate-foreign-newsgroups) + (t 0)) + level)) + info group active method) + (gnus-message 5 "Checking new news...") + + (while newsrc + (setq active (gnus-active (setq group (gnus-info-group + (setq info (pop newsrc)))))) + + ;; Check newsgroups. If the user doesn't want to check them, or + ;; they can't be checked (for instance, if the news server can't + ;; be reached) we just set the number of unread articles in this + ;; newsgroup to t. This means that Gnus thinks that there are + ;; unread articles, but it has no idea how many. + (if (and (setq method (gnus-info-method info)) + (not (inline + (gnus-server-equal + gnus-select-method + (setq method (gnus-server-get-method nil method))))) + (not (gnus-secondary-method-p method))) + ;; These groups are foreign. Check the level. + (when (<= (gnus-info-level info) foreign-level) + (setq active (gnus-activate-group group 'scan)) + (unless (inline (gnus-virtual-group-p group)) + (inline (gnus-close-group group))) + (when (fboundp (intern (concat (symbol-name (car method)) + "-request-update-info"))) + (inline (gnus-request-update-info info method)))) + ;; These groups are native or secondary. + (when (and (<= (gnus-info-level info) level) + (not gnus-read-active-file)) + (setq active (gnus-activate-group group 'scan)) + (inline (gnus-close-group group)))) + + ;; Get the number of unread articles in the group. + (if active + (inline (gnus-get-unread-articles-in-group info active t)) + ;; The group couldn't be reached, so we nix out the number of + ;; unread articles and stuff. + (gnus-set-active group nil) + (setcar (gnus-gethash group gnus-newsrc-hashtb) t))) + + (gnus-message 5 "Checking new news...done"))) + +;; Create a hash table out of the newsrc alist. The `car's of the +;; alist elements are used as keys. +(defun gnus-make-hashtable-from-newsrc-alist () + (let ((alist gnus-newsrc-alist) + (ohashtb gnus-newsrc-hashtb) + prev) + (setq gnus-newsrc-hashtb (gnus-make-hashtable (length alist))) + (setq alist + (setq prev (setq gnus-newsrc-alist + (if (equal (caar gnus-newsrc-alist) + "dummy.group") + gnus-newsrc-alist + (cons (list "dummy.group" 0 nil) alist))))) + (while alist + (gnus-sethash + (caar alist) + ;; Preserve number of unread articles in groups. + (cons (and ohashtb (car (gnus-gethash (caar alist) ohashtb))) + prev) + gnus-newsrc-hashtb) + (setq prev alist + alist (cdr alist))))) + +(defun gnus-make-hashtable-from-killed () + "Create a hash table from the killed and zombie lists." + (let ((lists '(gnus-killed-list gnus-zombie-list)) + list) + (setq gnus-killed-hashtb + (gnus-make-hashtable + (+ (length gnus-killed-list) (length gnus-zombie-list)))) + (while lists + (setq list (symbol-value (pop lists))) + (while list + (gnus-sethash (car list) (pop list) gnus-killed-hashtb))))) + +(defun gnus-parse-active () + "Parse active info in the nntp server buffer." + (save-excursion + (set-buffer nntp-server-buffer) + (goto-char (point-min)) + ;; Parse the result we got from `gnus-request-group'. + (when (looking-at "[0-9]+ [0-9]+ \\([0-9]+\\) [0-9]+") + (goto-char (match-beginning 1)) + (cons (read (current-buffer)) + (read (current-buffer)))))) + +(defun gnus-make-articles-unread (group articles) + "Mark ARTICLES in GROUP as unread." + (let* ((info (nth 2 (or (gnus-gethash group gnus-newsrc-hashtb) + (gnus-gethash (gnus-group-real-name group) + gnus-newsrc-hashtb)))) + (ranges (gnus-info-read info)) + news article) + (while articles + (when (gnus-member-of-range + (setq article (pop articles)) ranges) + (push article news))) + (when news + (gnus-info-set-read + info (gnus-remove-from-range (gnus-info-read info) (nreverse news))) + (gnus-group-update-group group t)))) + +;; Enter all dead groups into the hashtb. +(defun gnus-update-active-hashtb-from-killed () + (let ((hashtb (setq gnus-active-hashtb (gnus-make-hashtable 4096))) + (lists (list gnus-killed-list gnus-zombie-list)) + killed) + (while lists + (setq killed (car lists)) + (while killed + (gnus-sethash (car killed) nil hashtb) + (setq killed (cdr killed))) + (setq lists (cdr lists))))) + +(defun gnus-get-killed-groups () + "Go through the active hashtb and mark all unknown groups as killed." + ;; First make sure active file has been read. + (unless (gnus-read-active-file-p) + (let ((gnus-read-active-file t)) + (gnus-read-active-file))) + (unless gnus-killed-hashtb + (gnus-make-hashtable-from-killed)) + ;; Go through all newsgroups that are known to Gnus - enlarge kill list. + (mapatoms + (lambda (sym) + (let ((groups 0) + (group (symbol-name sym))) + (if (or (null group) + (gnus-gethash group gnus-killed-hashtb) + (gnus-gethash group gnus-newsrc-hashtb)) + () + (let ((do-sub (gnus-matches-options-n group))) + (if (or (eq do-sub 'subscribe) (eq do-sub 'ignore)) + () + (setq groups (1+ groups)) + (push group gnus-killed-list) + (gnus-sethash group group gnus-killed-hashtb)))))) + gnus-active-hashtb) + (gnus-dribble-touch)) + +;; Get the active file(s) from the backend(s). +(defun gnus-read-active-file (&optional force) + (gnus-group-set-mode-line) + (let ((methods + (append + (if (gnus-check-server gnus-select-method) + ;; The native server is available. + (cons gnus-select-method gnus-secondary-select-methods) + ;; The native server is down, so we just do the + ;; secondary ones. + gnus-secondary-select-methods) + ;; Also read from the archive server. + (when (gnus-archive-server-wanted-p) + (list "archive")))) + list-type) + (setq gnus-have-read-active-file nil) + (save-excursion + (set-buffer nntp-server-buffer) + (while methods + (let* ((method (if (stringp (car methods)) + (gnus-server-get-method nil (car methods)) + (car methods))) + (where (nth 1 method)) + (mesg (format "Reading active file%s via %s..." + (if (and where (not (zerop (length where)))) + (concat " from " where) "") + (car method)))) + (gnus-message 5 mesg) + (when (gnus-check-server method) + ;; Request that the backend scan its incoming messages. + (when (gnus-check-backend-function 'request-scan (car method)) + (gnus-request-scan nil method)) + (cond + ((and (eq gnus-read-active-file 'some) + (gnus-check-backend-function 'retrieve-groups (car method)) + (not force)) + (let ((newsrc (cdr gnus-newsrc-alist)) + (gmethod (gnus-server-get-method nil method)) + groups info) + (while (setq info (pop newsrc)) + (when (inline + (gnus-server-equal + (inline + (gnus-find-method-for-group + (gnus-info-group info) info)) + gmethod)) + (push (gnus-group-real-name (gnus-info-group info)) + groups))) + (when groups + (gnus-check-server method) + (setq list-type (gnus-retrieve-groups groups method)) + (cond + ((not list-type) + (gnus-error + 1.2 "Cannot read partial active file from %s server." + (car method))) + ((eq list-type 'active) + (gnus-active-to-gnus-format method gnus-active-hashtb)) + (t + (gnus-groups-to-gnus-format method gnus-active-hashtb)))))) + ((null method) + t) + (t + (if (not (gnus-request-list method)) + (unless (equal method gnus-message-archive-method) + (gnus-error 1 "Cannot read active file from %s server." + (car method))) + (gnus-message 5 mesg) + (gnus-active-to-gnus-format method gnus-active-hashtb) + ;; We mark this active file as read. + (push method gnus-have-read-active-file) + (gnus-message 5 "%sdone" mesg)))))) + (setq methods (cdr methods)))))) + + +(defun gnus-ignored-newsgroups-has-to-p () + "T only when gnus-ignored-newsgroups includes \"^to\\\\.\" as an element." + ;; note this regexp is the same as: + ;; (concat (regexp-quote "^to\\.") "\\($\\|" (regexp-quote "\\|") "\\)") + (string-match "\\^to\\\\\\.\\($\\|\\\\|\\)" + gnus-ignored-newsgroups)) + +;; Read an active file and place the results in `gnus-active-hashtb'. +(defun gnus-active-to-gnus-format (&optional method hashtb ignore-errors) + (unless method + (setq method gnus-select-method)) + (let ((cur (current-buffer)) + (hashtb (or hashtb + (if (and gnus-active-hashtb + (not (equal method gnus-select-method))) + gnus-active-hashtb + (setq gnus-active-hashtb + (if (equal method gnus-select-method) + (gnus-make-hashtable + (count-lines (point-min) (point-max))) + (gnus-make-hashtable 4096))))))) + ;; Delete unnecessary lines, cleaned up dmoore@ucsd.edu 31.10.1996 + (goto-char (point-min)) + (cond ((gnus-ignored-newsgroups-has-to-p) + (delete-matching-lines gnus-ignored-newsgroups)) + ((string= gnus-ignored-newsgroups "") + (delete-matching-lines "^to\\.")) + (t + (delete-matching-lines (concat "^to\\.\\|" + gnus-ignored-newsgroups)))) + + ;; Make the group names readable as a lisp expression even if they + ;; contain special characters. + ;; Fix by Luc Van Eycken <Luc.VanEycken@esat.kuleuven.ac.be>. + (goto-char (point-max)) + (while (re-search-backward "[][';?()#]" nil t) + (insert ?\\)) + + ;; If these are groups from a foreign select method, we insert the + ;; group prefix in front of the group names. + (and method (not (gnus-server-equal + (gnus-server-get-method nil method) + (gnus-server-get-method nil gnus-select-method))) + (let ((prefix (gnus-group-prefixed-name "" method))) + (goto-char (point-min)) + (while (and (not (eobp)) + (progn (insert prefix) + (zerop (forward-line 1))))))) + ;; Store the active file in a hash table. + (goto-char (point-min)) + (let (group max min) + (while (not (eobp)) + (condition-case () + (progn + (narrow-to-region (point) (gnus-point-at-eol)) + ;; group gets set to a symbol interned in the hash table + ;; (what a hack!!) - jwz + (setq group (let ((obarray hashtb)) (read cur))) + (if (and (numberp (setq max (read cur))) + (numberp (setq min (read cur))) + (progn + (skip-chars-forward " \t") + (not + (or (= (following-char) ?=) + (= (following-char) ?x) + (= (following-char) ?j))))) + (progn + (set group (cons min max)) + ;; if group is moderated, stick in moderation table + (when (= (following-char) ?m) + (unless gnus-moderated-hashtb + (setq gnus-moderated-hashtb (gnus-make-hashtable))) + (gnus-sethash (symbol-name group) t + gnus-moderated-hashtb))) + (set group nil))) + (error + (and group + (symbolp group) + (set group nil)) + (unless ignore-errors + (gnus-message 3 "Warning - illegal active: %s" + (buffer-substring + (gnus-point-at-bol) (gnus-point-at-eol)))))) + (widen) + (forward-line 1))))) + +(defun gnus-groups-to-gnus-format (method &optional hashtb) + ;; Parse a "groups" active file. + (let ((cur (current-buffer)) + (hashtb (or hashtb + (if (and method gnus-active-hashtb) + gnus-active-hashtb + (setq gnus-active-hashtb + (gnus-make-hashtable + (count-lines (point-min) (point-max))))))) + (prefix (and method + (not (gnus-server-equal + (gnus-server-get-method nil method) + (gnus-server-get-method nil gnus-select-method))) + (gnus-group-prefixed-name "" method)))) + + (goto-char (point-min)) + ;; We split this into to separate loops, one with the prefix + ;; and one without to speed the reading up somewhat. + (if prefix + (let (min max opoint group) + (while (not (eobp)) + (condition-case () + (progn + (read cur) (read cur) + (setq min (read cur) + max (read cur) + opoint (point)) + (skip-chars-forward " \t") + (insert prefix) + (goto-char opoint) + (set (let ((obarray hashtb)) (read cur)) + (cons min max))) + (error (and group (symbolp group) (set group nil)))) + (forward-line 1))) + (let (min max group) + (while (not (eobp)) + (condition-case () + (when (= (following-char) ?2) + (read cur) (read cur) + (setq min (read cur) + max (read cur)) + (set (setq group (let ((obarray hashtb)) (read cur))) + (cons min max))) + (error (and group (symbolp group) (set group nil)))) + (forward-line 1)))))) + +(defun gnus-read-newsrc-file (&optional force) + "Read startup file. +If FORCE is non-nil, the .newsrc file is read." + ;; Reset variables that might be defined in the .newsrc.eld file. + (let ((variables gnus-variable-list)) + (while variables + (set (car variables) nil) + (setq variables (cdr variables)))) + (let* ((newsrc-file gnus-current-startup-file) + (quick-file (concat newsrc-file ".el"))) + (save-excursion + ;; We always load the .newsrc.eld file. If always contains + ;; much information that can not be gotten from the .newsrc + ;; file (ticked articles, killed groups, foreign methods, etc.) + (gnus-read-newsrc-el-file quick-file) + + (when (and (file-exists-p gnus-current-startup-file) + (or force + (and (file-newer-than-file-p newsrc-file quick-file) + (file-newer-than-file-p newsrc-file + (concat quick-file "d"))) + (not gnus-newsrc-alist))) + ;; We read the .newsrc file. Note that if there if a + ;; .newsrc.eld file exists, it has already been read, and + ;; the `gnus-newsrc-hashtb' has been created. While reading + ;; the .newsrc file, Gnus will only use the information it + ;; can find there for changing the data already read - + ;; i. e., reading the .newsrc file will not trash the data + ;; already read (except for read articles). + (save-excursion + (gnus-message 5 "Reading %s..." newsrc-file) + (set-buffer (nnheader-find-file-noselect newsrc-file)) + (buffer-disable-undo (current-buffer)) + (gnus-newsrc-to-gnus-format) + (kill-buffer (current-buffer)) + (gnus-message 5 "Reading %s...done" newsrc-file))) + + ;; Convert old to new. + (gnus-convert-old-newsrc)))) + +(defun gnus-convert-old-newsrc () + "Convert old newsrc into the new format, if needed." + (let ((fcv (and gnus-newsrc-file-version + (gnus-continuum-version gnus-newsrc-file-version)))) + (cond + ;; No .newsrc.eld file was loaded. + ((null fcv) nil) + ;; Gnus 5 .newsrc.eld was loaded. + ((< fcv (gnus-continuum-version "September Gnus v0.1")) + (gnus-convert-old-ticks))))) + +(defun gnus-convert-old-ticks () + (let ((newsrc (cdr gnus-newsrc-alist)) + marks info dormant ticked) + (while (setq info (pop newsrc)) + (when (setq marks (gnus-info-marks info)) + (setq dormant (cdr (assq 'dormant marks)) + ticked (cdr (assq 'tick marks))) + (when (or dormant ticked) + (gnus-info-set-read + info + (gnus-add-to-range + (gnus-info-read info) + (nconc (gnus-uncompress-range dormant) + (gnus-uncompress-range ticked))))))))) + +(defun gnus-read-newsrc-el-file (file) + (let ((ding-file (concat file "d"))) + ;; We always, always read the .eld file. + (gnus-message 5 "Reading %s..." ding-file) + (let (gnus-newsrc-assoc) + (condition-case nil + (load ding-file t t t) + (error + (ding) + (unless (gnus-yes-or-no-p + (format "Error in %s; continue? " ding-file)) + (error "Error in %s" ding-file)))) + (when gnus-newsrc-assoc + (setq gnus-newsrc-alist gnus-newsrc-assoc))) + (gnus-make-hashtable-from-newsrc-alist) + (when (file-newer-than-file-p file ding-file) + ;; Old format quick file + (gnus-message 5 "Reading %s..." file) + ;; The .el file is newer than the .eld file, so we read that one + ;; as well. + (gnus-read-old-newsrc-el-file file)))) + +;; Parse the old-style quick startup file +(defun gnus-read-old-newsrc-el-file (file) + (let (newsrc killed marked group m info) + (prog1 + (let ((gnus-killed-assoc nil) + gnus-marked-assoc gnus-newsrc-alist gnus-newsrc-assoc) + (prog1 + (ignore-errors + (load file t t t)) + (setq newsrc gnus-newsrc-assoc + killed gnus-killed-assoc + marked gnus-marked-assoc))) + (setq gnus-newsrc-alist nil) + (while (setq group (pop newsrc)) + (if (setq info (gnus-get-info (car group))) + (progn + (gnus-info-set-read info (cddr group)) + (gnus-info-set-level + info (if (nth 1 group) gnus-level-default-subscribed + gnus-level-default-unsubscribed)) + (push info gnus-newsrc-alist)) + (push (setq info + (list (car group) + (if (nth 1 group) gnus-level-default-subscribed + gnus-level-default-unsubscribed) + (cddr group))) + gnus-newsrc-alist)) + ;; Copy marks into info. + (when (setq m (assoc (car group) marked)) + (unless (nthcdr 3 info) + (nconc info (list nil))) + (gnus-info-set-marks + info (list (cons 'tick (gnus-compress-sequence + (sort (cdr m) '<) t)))))) + (setq newsrc killed) + (while newsrc + (setcar newsrc (caar newsrc)) + (setq newsrc (cdr newsrc))) + (setq gnus-killed-list killed)) + ;; The .el file version of this variable does not begin with + ;; "options", while the .eld version does, so we just add it if it + ;; isn't there. + (when + gnus-newsrc-options + (when (not (string-match "^ *options" gnus-newsrc-options)) + (setq gnus-newsrc-options (concat "options " gnus-newsrc-options))) + (when (not (string-match "\n$" gnus-newsrc-options)) + (setq gnus-newsrc-options (concat gnus-newsrc-options "\n"))) + ;; Finally, if we read some options lines, we parse them. + (unless (string= gnus-newsrc-options "") + (gnus-newsrc-parse-options gnus-newsrc-options))) + + (setq gnus-newsrc-alist (nreverse gnus-newsrc-alist)) + (gnus-make-hashtable-from-newsrc-alist))) + +(defun gnus-make-newsrc-file (file) + "Make server dependent file name by catenating FILE and server host name." + (let* ((file (expand-file-name file nil)) + (real-file (concat file "-" (nth 1 gnus-select-method)))) + (if (or (file-exists-p real-file) + (file-exists-p (concat real-file ".el")) + (file-exists-p (concat real-file ".eld"))) + real-file file))) + +(defun gnus-newsrc-to-gnus-format () + (setq gnus-newsrc-options "") + (setq gnus-newsrc-options-n nil) + + (unless gnus-active-hashtb + (setq gnus-active-hashtb (gnus-make-hashtable 4096))) + (let ((buf (current-buffer)) + (already-read (> (length gnus-newsrc-alist) 1)) + group subscribed options-symbol newsrc Options-symbol + symbol reads num1) + (goto-char (point-min)) + ;; We intern the symbol `options' in the active hashtb so that we + ;; can `eq' against it later. + (set (setq options-symbol (intern "options" gnus-active-hashtb)) nil) + (set (setq Options-symbol (intern "Options" gnus-active-hashtb)) nil) + + (while (not (eobp)) + ;; We first read the first word on the line by narrowing and + ;; then reading into `gnus-active-hashtb'. Most groups will + ;; already exist in that hashtb, so this will save some string + ;; space. + (narrow-to-region + (point) + (progn (skip-chars-forward "^ \t!:\n") (point))) + (goto-char (point-min)) + (setq symbol + (and (/= (point-min) (point-max)) + (let ((obarray gnus-active-hashtb)) (read buf)))) + (widen) + ;; Now, the symbol we have read is either `options' or a group + ;; name. If it is an options line, we just add it to a string. + (cond + ((or (eq symbol options-symbol) + (eq symbol Options-symbol)) + (setq gnus-newsrc-options + ;; This concating is quite inefficient, but since our + ;; thorough studies show that approx 99.37% of all + ;; .newsrc files only contain a single options line, we + ;; don't give a damn, frankly, my dear. + (concat gnus-newsrc-options + (buffer-substring + (gnus-point-at-bol) + ;; Options may continue on the next line. + (or (and (re-search-forward "^[^ \t]" nil 'move) + (progn (beginning-of-line) (point))) + (point))))) + (forward-line -1)) + (symbol + ;; Group names can be just numbers. + (when (numberp symbol) + (setq symbol (intern (int-to-string symbol) gnus-active-hashtb))) + (unless (boundp symbol) + (set symbol nil)) + ;; It was a group name. + (setq subscribed (= (following-char) ?:) + group (symbol-name symbol) + reads nil) + (if (eolp) + ;; If the line ends here, this is clearly a buggy line, so + ;; we put point a the beginning of line and let the cond + ;; below do the error handling. + (beginning-of-line) + ;; We skip to the beginning of the ranges. + (skip-chars-forward "!: \t")) + ;; We are now at the beginning of the list of read articles. + ;; We read them range by range. + (while + (cond + ((looking-at "[0-9]+") + ;; We narrow and read a number instead of buffer-substring/ + ;; string-to-int because it's faster. narrow/widen is + ;; faster than save-restriction/narrow, and save-restriction + ;; produces a garbage object. + (setq num1 (progn + (narrow-to-region (match-beginning 0) (match-end 0)) + (read buf))) + (widen) + ;; If the next character is a dash, then this is a range. + (if (= (following-char) ?-) + (progn + ;; We read the upper bound of the range. + (forward-char 1) + (if (not (looking-at "[0-9]+")) + ;; This is a buggy line, by we pretend that + ;; it's kinda OK. Perhaps the user should be + ;; dinged? + (push num1 reads) + (push + (cons num1 + (progn + (narrow-to-region (match-beginning 0) + (match-end 0)) + (read buf))) + reads) + (widen))) + ;; It was just a simple number, so we add it to the + ;; list of ranges. + (push num1 reads)) + ;; If the next char in ?\n, then we have reached the end + ;; of the line and return nil. + (/= (following-char) ?\n)) + ((= (following-char) ?\n) + ;; End of line, so we end. + nil) + (t + ;; Not numbers and not eol, so this might be a buggy + ;; line... + (unless (eobp) + ;; If it was eob instead of ?\n, we allow it. + ;; The line was buggy. + (setq group nil) + (gnus-error 3.1 "Mangled line: %s" + (buffer-substring (gnus-point-at-bol) + (gnus-point-at-eol)))) + nil)) + ;; Skip past ", ". Spaces are illegal in these ranges, but + ;; we allow them, because it's a common mistake to put a + ;; space after the comma. + (skip-chars-forward ", ")) + + ;; We have already read .newsrc.eld, so we gently update the + ;; data in the hash table with the information we have just + ;; read. + (when group + (let ((info (gnus-get-info group)) + level) + (if info + ;; There is an entry for this file in the alist. + (progn + (gnus-info-set-read info (nreverse reads)) + ;; We update the level very gently. In fact, we + ;; only change it if there's been a status change + ;; from subscribed to unsubscribed, or vice versa. + (setq level (gnus-info-level info)) + (cond ((and (<= level gnus-level-subscribed) + (not subscribed)) + (setq level (if reads + gnus-level-default-unsubscribed + (1+ gnus-level-default-unsubscribed)))) + ((and (> level gnus-level-subscribed) subscribed) + (setq level gnus-level-default-subscribed))) + (gnus-info-set-level info level)) + ;; This is a new group. + (setq info (list group + (if subscribed + gnus-level-default-subscribed + (if reads + (1+ gnus-level-subscribed) + gnus-level-default-unsubscribed)) + (nreverse reads)))) + (push info newsrc))))) + (forward-line 1)) + + (setq newsrc (nreverse newsrc)) + + (if (not already-read) + () + ;; We now have two newsrc lists - `newsrc', which is what we + ;; have read from .newsrc, and `gnus-newsrc-alist', which is + ;; what we've read from .newsrc.eld. We have to merge these + ;; lists. We do this by "attaching" any (foreign) groups in the + ;; gnus-newsrc-alist to the (native) group that precedes them. + (let ((rc (cdr gnus-newsrc-alist)) + (prev gnus-newsrc-alist) + entry mentry) + (while rc + (or (null (nth 4 (car rc))) ; It's a native group. + (assoc (caar rc) newsrc) ; It's already in the alist. + (if (setq entry (assoc (caar prev) newsrc)) + (setcdr (setq mentry (memq entry newsrc)) + (cons (car rc) (cdr mentry))) + (push (car rc) newsrc))) + (setq prev rc + rc (cdr rc))))) + + (setq gnus-newsrc-alist newsrc) + ;; We make the newsrc hashtb. + (gnus-make-hashtable-from-newsrc-alist) + + ;; Finally, if we read some options lines, we parse them. + (unless (string= gnus-newsrc-options "") + (gnus-newsrc-parse-options gnus-newsrc-options)))) + +;; Parse options lines to find "options -n !all rec.all" and stuff. +;; The return value will be a list on the form +;; ((regexp1 . ignore) +;; (regexp2 . subscribe)...) +;; When handling new newsgroups, groups that match a `ignore' regexp +;; will be ignored, and groups that match a `subscribe' regexp will be +;; subscribed. A line like +;; options -n !all rec.all +;; will lead to a list that looks like +;; (("^rec\\..+" . subscribe) +;; ("^.+" . ignore)) +;; So all "rec.*" groups will be subscribed, while all the other +;; groups will be ignored. Note that "options -n !all rec.all" is very +;; different from "options -n rec.all !all". +(defun gnus-newsrc-parse-options (options) + (let (out eol) + (save-excursion + (gnus-set-work-buffer) + (insert (regexp-quote options)) + ;; First we treat all continuation lines. + (goto-char (point-min)) + (while (re-search-forward "\n[ \t]+" nil t) + (replace-match " " t t)) + ;; Then we transform all "all"s into ".+"s. + (goto-char (point-min)) + (while (re-search-forward "\\ball\\b" nil t) + (replace-match ".+" t t)) + (goto-char (point-min)) + ;; We remove all other options than the "-n" ones. + (while (re-search-forward "[ \t]-[^n][^-]*" nil t) + (replace-match " ") + (forward-char -1)) + (goto-char (point-min)) + + ;; We are only interested in "options -n" lines - we + ;; ignore the other option lines. + (while (re-search-forward "[ \t]-n" nil t) + (setq eol + (or (save-excursion + (and (re-search-forward "[ \t]-n" (gnus-point-at-eol) t) + (- (point) 2))) + (gnus-point-at-eol))) + ;; Search for all "words"... + (while (re-search-forward "[^ \t,\n]+" eol t) + (if (= (char-after (match-beginning 0)) ?!) + ;; If the word begins with a bang (!), this is a "not" + ;; spec. We put this spec (minus the bang) and the + ;; symbol `ignore' into the list. + (push (cons (concat + "^" (buffer-substring + (1+ (match-beginning 0)) + (match-end 0))) + 'ignore) + out) + ;; There was no bang, so this is a "yes" spec. + (push (cons (concat "^" (match-string 0)) + 'subscribe) + out)))) + + (setq gnus-newsrc-options-n out)))) + +(defun gnus-save-newsrc-file (&optional force) + "Save .newsrc file." + ;; Note: We cannot save .newsrc file if all newsgroups are removed + ;; from the variable gnus-newsrc-alist. + (when (and (or gnus-newsrc-alist gnus-killed-list) + gnus-current-startup-file) + (save-excursion + (if (and (or gnus-use-dribble-file gnus-slave) + (not force) + (or (not gnus-dribble-buffer) + (not (buffer-name gnus-dribble-buffer)) + (zerop (save-excursion + (set-buffer gnus-dribble-buffer) + (buffer-size))))) + (gnus-message 4 "(No changes need to be saved)") + (run-hooks 'gnus-save-newsrc-hook) + (if gnus-slave + (gnus-slave-save-newsrc) + ;; Save .newsrc. + (when gnus-save-newsrc-file + (gnus-message 8 "Saving %s..." gnus-current-startup-file) + (gnus-gnus-to-newsrc-format) + (gnus-message 8 "Saving %s...done" gnus-current-startup-file)) + ;; Save .newsrc.eld. + (set-buffer (get-buffer-create " *Gnus-newsrc*")) + (make-local-variable 'version-control) + (setq version-control 'never) + (setq buffer-file-name + (concat gnus-current-startup-file ".eld")) + (setq default-directory (file-name-directory buffer-file-name)) + (gnus-add-current-to-buffer-list) + (buffer-disable-undo (current-buffer)) + (erase-buffer) + (gnus-message 5 "Saving %s.eld..." gnus-current-startup-file) + (gnus-gnus-to-quick-newsrc-format) + (run-hooks 'gnus-save-quick-newsrc-hook) + (save-buffer) + (kill-buffer (current-buffer)) + (gnus-message + 5 "Saving %s.eld...done" gnus-current-startup-file)) + (gnus-dribble-delete-file) + (gnus-group-set-mode-line))))) + +(defun gnus-gnus-to-quick-newsrc-format () + "Insert Gnus variables such as gnus-newsrc-alist in lisp format." + (let ((print-quoted t)) + (insert ";; -*- emacs-lisp -*-\n") + (insert ";; Gnus startup file.\n") + (insert + ";; Never delete this file - touch .newsrc instead to force Gnus\n") + (insert ";; to read .newsrc.\n") + (insert "(setq gnus-newsrc-file-version " + (prin1-to-string gnus-version) ")\n") + (let* ((gnus-killed-list + (if (and gnus-save-killed-list + (stringp gnus-save-killed-list)) + (gnus-strip-killed-list) + gnus-killed-list)) + (variables + (if gnus-save-killed-list gnus-variable-list + ;; Remove the `gnus-killed-list' from the list of variables + ;; to be saved, if required. + (delq 'gnus-killed-list (copy-sequence gnus-variable-list)))) + ;; Peel off the "dummy" group. + (gnus-newsrc-alist (cdr gnus-newsrc-alist)) + variable) + ;; Insert the variables into the file. + (while variables + (when (and (boundp (setq variable (pop variables))) + (symbol-value variable)) + (insert "(setq " (symbol-name variable) " '") + (gnus-prin1 (symbol-value variable)) + (insert ")\n")))))) + +(defun gnus-strip-killed-list () + "Return the killed list minus the groups that match `gnus-save-killed-list'." + (let ((list gnus-killed-list) + olist) + (while list + (when (string-match gnus-save-killed-list) + (push (car list) olist)) + (pop list)) + (nreverse olist))) + +(defun gnus-gnus-to-newsrc-format () + ;; Generate and save the .newsrc file. + (save-excursion + (set-buffer (create-file-buffer gnus-current-startup-file)) + (let ((newsrc (cdr gnus-newsrc-alist)) + (standard-output (current-buffer)) + info ranges range method) + (setq buffer-file-name gnus-current-startup-file) + (setq default-directory (file-name-directory buffer-file-name)) + (buffer-disable-undo (current-buffer)) + (erase-buffer) + ;; Write options. + (when gnus-newsrc-options + (insert gnus-newsrc-options)) + ;; Write subscribed and unsubscribed. + (while (setq info (pop newsrc)) + ;; Don't write foreign groups to .newsrc. + (when (or (null (setq method (gnus-info-method info))) + (equal method "native") + (inline (gnus-server-equal method gnus-select-method))) + (insert (gnus-info-group info) + (if (> (gnus-info-level info) gnus-level-subscribed) + "!" ":")) + (when (setq ranges (gnus-info-read info)) + (insert " ") + (if (not (listp (cdr ranges))) + (if (= (car ranges) (cdr ranges)) + (princ (car ranges)) + (princ (car ranges)) + (insert "-") + (princ (cdr ranges))) + (while (setq range (pop ranges)) + (if (or (atom range) (= (car range) (cdr range))) + (princ (or (and (atom range) range) (car range))) + (princ (car range)) + (insert "-") + (princ (cdr range))) + (when ranges + (insert ","))))) + (insert "\n"))) + (make-local-variable 'version-control) + (setq version-control 'never) + ;; It has been reported that sometime the modtime on the .newsrc + ;; file seems to be off. We really do want to overwrite it, so + ;; we clear the modtime here before saving. It's a bit odd, + ;; though... + ;; sometimes the modtime clear isn't sufficient. most brute force: + ;; delete the silly thing entirely first. but this fails to provide + ;; such niceties as .newsrc~ creation. + (if gnus-modtime-botch + (delete-file gnus-startup-file) + (clear-visited-file-modtime)) + (run-hooks 'gnus-save-standard-newsrc-hook) + (save-buffer) + (kill-buffer (current-buffer))))) + + +;;; +;;; Slave functions. +;;; + +(defun gnus-slave-save-newsrc () + (save-excursion + (set-buffer gnus-dribble-buffer) + (let ((slave-name + (make-temp-name (concat gnus-current-startup-file "-slave-"))) + (modes (ignore-errors + (file-modes (concat gnus-current-startup-file ".eld"))))) + (gnus-write-buffer slave-name) + (when modes + (set-file-modes slave-name modes))))) + +(defun gnus-master-read-slave-newsrc () + (let ((slave-files + (directory-files + (file-name-directory gnus-current-startup-file) + t (concat + "^" (regexp-quote + (concat + (file-name-nondirectory gnus-current-startup-file) + "-slave-"))) + t)) + file) + (if (not slave-files) + () ; There are no slave files to read. + (gnus-message 7 "Reading slave newsrcs...") + (save-excursion + (set-buffer (get-buffer-create " *gnus slave*")) + (buffer-disable-undo (current-buffer)) + (setq slave-files + (sort (mapcar (lambda (file) + (list (nth 5 (file-attributes file)) file)) + slave-files) + (lambda (f1 f2) + (or (< (caar f1) (caar f2)) + (< (nth 1 (car f1)) (nth 1 (car f2))))))) + (while slave-files + (erase-buffer) + (setq file (nth 1 (car slave-files))) + (insert-file-contents file) + (when (condition-case () + (progn + (eval-buffer (current-buffer)) + t) + (error + (gnus-error 3.2 "Possible error in %s" file) + nil)) + (unless gnus-slave ; Slaves shouldn't delete these files. + (ignore-errors + (delete-file file)))) + (setq slave-files (cdr slave-files)))) + (gnus-dribble-touch) + (gnus-message 7 "Reading slave newsrcs...done")))) + + +;;; +;;; Group description. +;;; + +(defun gnus-read-all-descriptions-files () + (let ((methods (cons gnus-select-method + (nconc + (when (gnus-archive-server-wanted-p) + (list "archive")) + gnus-secondary-select-methods)))) + (while methods + (gnus-read-descriptions-file (car methods)) + (setq methods (cdr methods))) + t)) + +(defun gnus-read-descriptions-file (&optional method) + (let ((method (or method gnus-select-method)) + group) + (when (stringp method) + (setq method (gnus-server-to-method method))) + ;; We create the hashtable whether we manage to read the desc file + ;; to avoid trying to re-read after a failed read. + (unless gnus-description-hashtb + (setq gnus-description-hashtb + (gnus-make-hashtable (length gnus-active-hashtb)))) + ;; Mark this method's desc file as read. + (gnus-sethash (gnus-group-prefixed-name "" method) "Has read" + gnus-description-hashtb) + + (gnus-message 5 "Reading descriptions file via %s..." (car method)) + (cond + ((not (gnus-check-server method)) + (gnus-message 1 "Couldn't open server") + nil) + ((not (gnus-request-list-newsgroups method)) + (gnus-message 1 "Couldn't read newsgroups descriptions") + nil) + (t + (save-excursion + (save-restriction + (set-buffer nntp-server-buffer) + (goto-char (point-min)) + (when (or (search-forward "\n.\n" nil t) + (goto-char (point-max))) + (beginning-of-line) + (narrow-to-region (point-min) (point))) + ;; If these are groups from a foreign select method, we insert the + ;; group prefix in front of the group names. + (and method (not (inline + (gnus-server-equal + (gnus-server-get-method nil method) + (gnus-server-get-method + nil gnus-select-method)))) + (let ((prefix (gnus-group-prefixed-name "" method))) + (goto-char (point-min)) + (while (and (not (eobp)) + (progn (insert prefix) + (zerop (forward-line 1))))))) + (goto-char (point-min)) + (while (not (eobp)) + ;; If we get an error, we set group to 0, which is not a + ;; symbol... + (setq group + (condition-case () + (let ((obarray gnus-description-hashtb)) + ;; Group is set to a symbol interned in this + ;; hash table. + (read nntp-server-buffer)) + (error 0))) + (skip-chars-forward " \t") + ;; ... which leads to this line being effectively ignored. + (when (symbolp group) + (set group (buffer-substring + (point) (progn (end-of-line) (point))))) + (forward-line 1)))) + (gnus-message 5 "Reading descriptions file...done") + t)))) + +(defun gnus-group-get-description (group) + "Get the description of a group by sending XGTITLE to the server." + (when (gnus-request-group-description group) + (save-excursion + (set-buffer nntp-server-buffer) + (goto-char (point-min)) + (when (looking-at "[^ \t]+[ \t]+\\(.*\\)") + (match-string 1))))) + +;;;###autoload +(defun gnus-declare-backend (name &rest abilities) + "Declare backend NAME with ABILITIES as a Gnus backend." + (setq gnus-valid-select-methods + (nconc gnus-valid-select-methods + (list (apply 'list name abilities))))) + +(defun gnus-set-default-directory () + "Set the default directory in the current buffer to `gnus-default-directory'. +If this variable is nil, don't do anything." + (setq default-directory + (if (and gnus-default-directory + (file-exists-p gnus-default-directory)) + (file-name-as-directory (expand-file-name gnus-default-directory)) + default-directory))) + +(provide 'gnus-start) + +;;; gnus-start.el ends here |