(require 'gnus)
(require 'gnus-cache)
(require 'nnvirtual)
(require 'gnus-sum)
(require 'gnus-score)
(eval-when-compile
(if (featurep 'xemacs)
(require 'itimer)
(require 'timer))
(require 'cl))
(defcustom gnus-agent-directory (nnheader-concat gnus-directory "agent/")
"Where the Gnus agent will store its files."
:group 'gnus-agent
:type 'directory)
(defcustom gnus-agent-plugged-hook nil
"Hook run when plugging into the network."
:group 'gnus-agent
:type 'hook)
(defcustom gnus-agent-unplugged-hook nil
"Hook run when unplugging from the network."
:group 'gnus-agent
:type 'hook)
(defcustom gnus-agent-handle-level gnus-level-subscribed
"Groups on levels higher than this variable will be ignored by the Agent."
:group 'gnus-agent
:type 'integer)
(defcustom gnus-agent-expire-days 7
"Read articles older than this will be expired."
:group 'gnus-agent
:type 'integer)
(defcustom gnus-agent-expire-all nil
"If non-nil, also expire unread, ticked and dormant articles.
If nil, only read articles will be expired."
:group 'gnus-agent
:type 'boolean)
(defcustom gnus-agent-group-mode-hook nil
"Hook run in Agent group minor modes."
:group 'gnus-agent
:type 'hook)
(defcustom gnus-agent-summary-mode-hook nil
"Hook run in Agent summary minor modes."
:group 'gnus-agent
:type 'hook)
(defcustom gnus-agent-server-mode-hook nil
"Hook run in Agent summary minor modes."
:group 'gnus-agent
:type 'hook)
(defcustom gnus-agent-confirmation-function 'y-or-n-p
"Function to confirm when error happens."
:version "21.1"
:group 'gnus-agent
:type 'function)
(defcustom gnus-agent-synchronize-flags 'ask
"Indicate if flags are synchronized when you plug in.
If this is `ask' the hook will query the user."
:version "21.1"
:type '(choice (const :tag "Always" t)
(const :tag "Never" nil)
(const :tag "Ask" ask))
:group 'gnus-agent)
(defvar gnus-agent-history-buffers nil)
(defvar gnus-agent-buffer-alist nil)
(defvar gnus-agent-article-alist nil)
(defvar gnus-agent-group-alist nil)
(defvar gnus-agent-covered-methods nil)
(defvar gnus-category-alist nil)
(defvar gnus-agent-current-history nil)
(defvar gnus-agent-overview-buffer nil)
(defvar gnus-category-predicate-cache nil)
(defvar gnus-category-group-cache nil)
(defvar gnus-agent-spam-hashtb nil)
(defvar gnus-agent-file-name nil)
(defvar gnus-agent-send-mail-function nil)
(defvar gnus-agent-file-coding-system 'raw-text)
(defvar gnus-headers)
(defvar gnus-score)
(defun gnus-open-agent ()
(setq gnus-agent t)
(gnus-agent-read-servers)
(gnus-category-read)
(gnus-agent-create-buffer)
(add-hook 'gnus-group-mode-hook 'gnus-agent-mode)
(add-hook 'gnus-summary-mode-hook 'gnus-agent-mode)
(add-hook 'gnus-server-mode-hook 'gnus-agent-mode))
(defun gnus-agent-create-buffer ()
(if (gnus-buffer-live-p gnus-agent-overview-buffer)
t
(setq gnus-agent-overview-buffer
(gnus-get-buffer-create " *Gnus agent overview*"))
(with-current-buffer gnus-agent-overview-buffer
(mm-enable-multibyte))
nil))
(gnus-add-shutdown 'gnus-close-agent 'gnus)
(defun gnus-close-agent ()
(setq gnus-agent-covered-methods nil
gnus-category-predicate-cache nil
gnus-category-group-cache nil
gnus-agent-spam-hashtb nil)
(gnus-kill-buffer gnus-agent-overview-buffer))
(defun gnus-agent-read-file (file)
"Load FILE and do a `read' there."
(with-temp-buffer
(ignore-errors
(nnheader-insert-file-contents file)
(goto-char (point-min))
(read (current-buffer)))))
(defsubst gnus-agent-method ()
(concat (symbol-name (car gnus-command-method)) "/"
(if (equal (cadr gnus-command-method) "")
"unnamed"
(cadr gnus-command-method))))
(defsubst gnus-agent-directory ()
"Path of the Gnus agent directory."
(nnheader-concat gnus-agent-directory
(nnheader-translate-file-chars (gnus-agent-method)) "/"))
(defun gnus-agent-lib-file (file)
"The full path of the Gnus agent library FILE."
(expand-file-name file
(file-name-as-directory
(expand-file-name "agent.lib" (gnus-agent-directory)))))
(defun gnus-agent-start-fetch ()
"Initialize data structures for efficient fetching."
(gnus-agent-open-history)
(setq gnus-agent-current-history (gnus-agent-history-buffer))
(gnus-agent-create-buffer))
(defun gnus-agent-stop-fetch ()
"Save all data structures and clean up."
(gnus-agent-save-history)
(gnus-agent-close-history)
(setq gnus-agent-spam-hashtb nil)
(save-excursion
(set-buffer nntp-server-buffer)
(widen)))
(defmacro gnus-agent-with-fetch (&rest forms)
"Do FORMS safely."
`(unwind-protect
(let ((gnus-agent-fetching t))
(gnus-agent-start-fetch)
,@forms)
(gnus-agent-stop-fetch)))
(put 'gnus-agent-with-fetch 'lisp-indent-function 0)
(put 'gnus-agent-with-fetch 'edebug-form-spec '(body))
(defvar gnus-agent-mode-hook nil
"Hook run when installing agent mode.")
(defvar gnus-agent-mode nil)
(defvar gnus-agent-mode-status '(gnus-agent-mode " Plugged"))
(defun gnus-agent-mode ()
"Minor mode for providing a agent support in Gnus buffers."
(let* ((buffer (progn (string-match "^gnus-\\(.*\\)-mode$"
(symbol-name major-mode))
(match-string 1 (symbol-name major-mode))))
(mode (intern (format "gnus-agent-%s-mode" buffer))))
(set (make-local-variable 'gnus-agent-mode) t)
(set mode nil)
(set (make-local-variable mode) t)
(when (gnus-visual-p 'agent-menu 'menu)
(funcall (intern (format "gnus-agent-%s-make-menu-bar" buffer))))
(unless (assq 'gnus-agent-mode minor-mode-alist)
(push gnus-agent-mode-status minor-mode-alist))
(unless (assq mode minor-mode-map-alist)
(push (cons mode (symbol-value (intern (format "gnus-agent-%s-mode-map"
buffer))))
minor-mode-map-alist))
(when (eq major-mode 'gnus-group-mode)
(gnus-agent-toggle-plugged gnus-plugged))
(gnus-run-hooks 'gnus-agent-mode-hook
(intern (format "gnus-agent-%s-mode-hook" buffer)))))
(defvar gnus-agent-group-mode-map (make-sparse-keymap))
(gnus-define-keys gnus-agent-group-mode-map
"Ju" gnus-agent-fetch-groups
"Jc" gnus-enter-category-buffer
"Jj" gnus-agent-toggle-plugged
"Js" gnus-agent-fetch-session
"JY" gnus-agent-synchronize-flags
"JS" gnus-group-send-drafts
"Ja" gnus-agent-add-group
"Jr" gnus-agent-remove-group)
(defun gnus-agent-group-make-menu-bar ()
(unless (boundp 'gnus-agent-group-menu)
(easy-menu-define
gnus-agent-group-menu gnus-agent-group-mode-map ""
'("Agent"
["Toggle plugged" gnus-agent-toggle-plugged t]
["List categories" gnus-enter-category-buffer t]
["Send drafts" gnus-group-send-drafts gnus-plugged]
("Fetch"
["All" gnus-agent-fetch-session gnus-plugged]
["Group" gnus-agent-fetch-group gnus-plugged])))))
(defvar gnus-agent-summary-mode-map (make-sparse-keymap))
(gnus-define-keys gnus-agent-summary-mode-map
"Jj" gnus-agent-toggle-plugged
"J#" gnus-agent-mark-article
"J\M-#" gnus-agent-unmark-article
"@" gnus-agent-toggle-mark
"Jc" gnus-agent-catchup)
(defun gnus-agent-summary-make-menu-bar ()
(unless (boundp 'gnus-agent-summary-menu)
(easy-menu-define
gnus-agent-summary-menu gnus-agent-summary-mode-map ""
'("Agent"
["Toggle plugged" gnus-agent-toggle-plugged t]
["Mark as downloadable" gnus-agent-mark-article t]
["Unmark as downloadable" gnus-agent-unmark-article t]
["Toggle mark" gnus-agent-toggle-mark t]
["Catchup undownloaded" gnus-agent-catchup t]))))
(defvar gnus-agent-server-mode-map (make-sparse-keymap))
(gnus-define-keys gnus-agent-server-mode-map
"Jj" gnus-agent-toggle-plugged
"Ja" gnus-agent-add-server
"Jr" gnus-agent-remove-server)
(defun gnus-agent-server-make-menu-bar ()
(unless (boundp 'gnus-agent-server-menu)
(easy-menu-define
gnus-agent-server-menu gnus-agent-server-mode-map ""
'("Agent"
["Toggle plugged" gnus-agent-toggle-plugged t]
["Add" gnus-agent-add-server t]
["Remove" gnus-agent-remove-server t]))))
(defun gnus-agent-toggle-plugged (plugged)
"Toggle whether Gnus is unplugged or not."
(interactive (list (not gnus-plugged)))
(if plugged
(progn
(setq gnus-plugged plugged)
(gnus-agent-possibly-synchronize-flags)
(gnus-run-hooks 'gnus-agent-plugged-hook)
(setcar (cdr gnus-agent-mode-status) " Plugged"))
(gnus-agent-close-connections)
(setq gnus-plugged plugged)
(gnus-run-hooks 'gnus-agent-unplugged-hook)
(setcar (cdr gnus-agent-mode-status) " Unplugged"))
(set-buffer-modified-p t))
(defun gnus-agent-close-connections ()
"Close all methods covered by the Gnus agent."
(let ((methods gnus-agent-covered-methods))
(while methods
(gnus-close-server (pop methods)))))
(defun gnus-unplugged ()
"Start Gnus unplugged."
(interactive)
(setq gnus-plugged nil)
(gnus))
(defun gnus-plugged ()
"Start Gnus plugged."
(interactive)
(setq gnus-plugged t)
(gnus))
(defun gnus-agentize ()
"Allow Gnus to be an offline newsreader.
The normal usage of this command is to put the following as the
last form in your `.gnus.el' file:
\(gnus-agentize)
This will modify the `gnus-before-startup-hook', `gnus-post-method',
and `message-send-mail-function' variables, and install the Gnus
agent minor mode in all Gnus buffers."
(interactive)
(gnus-open-agent)
(add-hook 'gnus-setup-news-hook 'gnus-agent-queue-setup)
(unless gnus-agent-send-mail-function
(setq gnus-agent-send-mail-function message-send-mail-function
message-send-mail-function 'gnus-agent-send-mail))
(unless gnus-agent-covered-methods
(setq gnus-agent-covered-methods (list gnus-select-method))))
(defun gnus-agent-queue-setup ()
"Make sure the queue group exists."
(unless (gnus-gethash "nndraft:queue" gnus-newsrc-hashtb)
(gnus-request-create-group "queue" '(nndraft ""))
(let ((gnus-level-default-subscribed 1))
(gnus-subscribe-group "nndraft:queue" nil '(nndraft "")))
(gnus-group-set-parameter
"nndraft:queue" 'gnus-dummy '((gnus-draft-mode)))))
(defun gnus-agent-send-mail ()
(if gnus-plugged
(funcall gnus-agent-send-mail-function)
(goto-char (point-min))
(re-search-forward
(concat "^" (regexp-quote mail-header-separator) "\n"))
(replace-match "\n")
(gnus-agent-insert-meta-information 'mail)
(gnus-request-accept-article "nndraft:queue" nil t t)))
(defun gnus-agent-insert-meta-information (type &optional method)
"Insert meta-information into the message that says how it's to be posted.
TYPE can be either `mail' or `news'. If the latter METHOD can
be a select method."
(save-excursion
(message-remove-header gnus-agent-meta-information-header)
(goto-char (point-min))
(insert gnus-agent-meta-information-header ": "
(symbol-name type) " " (format "%S" method)
"\n")
(forward-char -1)
(while (search-backward "\n" nil t)
(replace-match "\\n" t t))))
(defun gnus-agent-restore-gcc ()
"Restore GCC field from saved header."
(save-excursion
(goto-char (point-min))
(while (re-search-forward (concat gnus-agent-gcc-header ":") nil t)
(replace-match "Gcc:" 'fixedcase))))
(defun gnus-agent-any-covered-gcc ()
(save-restriction
(message-narrow-to-headers)
(let* ((gcc (mail-fetch-field "gcc" nil t))
(methods (and gcc
(mapcar 'gnus-inews-group-method
(message-unquote-tokens
(message-tokenize-header
gcc " ,")))))
covered)
(while (and (not covered) methods)
(setq covered
(member (car methods) gnus-agent-covered-methods)
methods (cdr methods)))
covered)))
(defun gnus-agent-possibly-save-gcc ()
"Save GCC if Gnus is unplugged."
(when (and (not gnus-plugged) (gnus-agent-any-covered-gcc))
(save-excursion
(goto-char (point-min))
(let ((case-fold-search t))
(while (re-search-forward "^gcc:" nil t)
(replace-match (concat gnus-agent-gcc-header ":") 'fixedcase))))))
(defun gnus-agent-possibly-do-gcc ()
"Do GCC if Gnus is plugged."
(when (or gnus-plugged (not (gnus-agent-any-covered-gcc)))
(gnus-inews-do-gcc)))
(defun gnus-agent-fetch-groups (n)
"Put all new articles in the current groups into the Agent."
(interactive "P")
(unless gnus-plugged
(error "Groups can't be fetched when Gnus is unplugged"))
(gnus-group-iterate n 'gnus-agent-fetch-group))
(defun gnus-agent-fetch-group (group)
"Put all new articles in GROUP into the Agent."
(interactive (list (gnus-group-group-name)))
(unless gnus-plugged
(error "Groups can't be fetched when Gnus is unplugged"))
(unless group
(error "No group on the current line"))
(let ((gnus-command-method (gnus-find-method-for-group group)))
(gnus-agent-with-fetch
(gnus-agent-fetch-group-1 group gnus-command-method)
(gnus-message 5 "Fetching %s...done" group))))
(defun gnus-agent-add-group (category arg)
"Add the current group to an agent category."
(interactive
(list
(intern
(completing-read
"Add to category: "
(mapcar (lambda (cat) (list (symbol-name (car cat))))
gnus-category-alist)
nil t))
current-prefix-arg))
(let ((cat (assq category gnus-category-alist))
c groups)
(gnus-group-iterate arg
(lambda (group)
(when (cadddr (setq c (gnus-group-category group)))
(setf (cadddr c) (delete group (cadddr c))))
(push group groups)))
(setf (cadddr cat) (nconc (cadddr cat) groups))
(gnus-category-write)))
(defun gnus-agent-remove-group (arg)
"Remove the current group from its agent category, if any."
(interactive "P")
(let (c)
(gnus-group-iterate arg
(lambda (group)
(when (cadddr (setq c (gnus-group-category group)))
(setf (cadddr c) (delete group (cadddr c))))))
(gnus-category-write)))
(defun gnus-agent-synchronize-flags ()
"Synchronize unplugged flags with servers."
(interactive)
(save-excursion
(dolist (gnus-command-method gnus-agent-covered-methods)
(when (file-exists-p (gnus-agent-lib-file "flags"))
(gnus-agent-synchronize-flags-server gnus-command-method)))))
(defun gnus-agent-possibly-synchronize-flags ()
"Synchronize flags according to `gnus-agent-synchronize-flags'."
(interactive)
(save-excursion
(dolist (gnus-command-method gnus-agent-covered-methods)
(when (file-exists-p (gnus-agent-lib-file "flags"))
(gnus-agent-possibly-synchronize-flags-server gnus-command-method)))))
(defun gnus-agent-synchronize-flags-server (method)
"Synchronize flags set when unplugged for server."
(let ((gnus-command-method method))
(when (file-exists-p (gnus-agent-lib-file "flags"))
(set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
(erase-buffer)
(nnheader-insert-file-contents (gnus-agent-lib-file "flags"))
(if (null (gnus-check-server gnus-command-method))
(message "Couldn't open server %s" (nth 1 gnus-command-method))
(while (not (eobp))
(if (null (eval (read (current-buffer))))
(progn (forward-line)
(kill-line -1))
(write-file (gnus-agent-lib-file "flags"))
(error "Couldn't set flags from file %s"
(gnus-agent-lib-file "flags"))))
(delete-file (gnus-agent-lib-file "flags")))
(kill-buffer nil))))
(defun gnus-agent-possibly-synchronize-flags-server (method)
"Synchronize flags for server according to `gnus-agent-synchronize-flags'."
(when (or (and gnus-agent-synchronize-flags
(not (eq gnus-agent-synchronize-flags 'ask)))
(and (eq gnus-agent-synchronize-flags 'ask)
(gnus-y-or-n-p (format "Synchronize flags on server `%s'? "
(cadr method)))))
(gnus-agent-synchronize-flags-server method)))
(defun gnus-agent-add-server (server)
"Enroll SERVER in the agent program."
(interactive (list (gnus-server-server-name)))
(unless server
(error "No server on the current line"))
(let ((method (gnus-server-get-method nil (gnus-server-server-name))))
(when (member method gnus-agent-covered-methods)
(error "Server already in the agent program"))
(push method gnus-agent-covered-methods)
(gnus-agent-write-servers)
(message "Entered %s into the Agent" server)))
(defun gnus-agent-remove-server (server)
"Remove SERVER from the agent program."
(interactive (list (gnus-server-server-name)))
(unless server
(error "No server on the current line"))
(let ((method (gnus-server-get-method nil (gnus-server-server-name))))
(unless (member method gnus-agent-covered-methods)
(error "Server not in the agent program"))
(setq gnus-agent-covered-methods
(delete method gnus-agent-covered-methods))
(gnus-agent-write-servers)
(message "Removed %s from the agent" server)))
(defun gnus-agent-read-servers ()
"Read the alist of covered servers."
(setq gnus-agent-covered-methods
(gnus-agent-read-file
(nnheader-concat gnus-agent-directory "lib/servers"))))
(defun gnus-agent-write-servers ()
"Write the alist of covered servers."
(gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
(let ((coding-system-for-write nnheader-file-coding-system)
(file-name-coding-system nnmail-pathname-coding-system))
(with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
(prin1 gnus-agent-covered-methods (current-buffer)))))
(defun gnus-agent-mark-article (n &optional unmark)
"Mark the next N articles as downloadable.
If N is negative, mark backward instead. If UNMARK is non-nil, remove
the mark instead. The difference between N and the actual number of
articles marked is returned."
(interactive "p")
(let ((backward (< n 0))
(n (abs n)))
(while (and
(> n 0)
(progn
(gnus-summary-set-agent-mark
(gnus-summary-article-number) unmark)
(zerop (gnus-summary-next-subject (if backward -1 1) nil t))))
(setq n (1- n)))
(when (/= 0 n)
(gnus-message 7 "No more articles"))
(gnus-summary-recenter)
(gnus-summary-position-point)
n))
(defun gnus-agent-unmark-article (n)
"Remove the downloadable mark from the next N articles.
If N is negative, unmark backward instead. The difference between N and
the actual number of articles unmarked is returned."
(interactive "p")
(gnus-agent-mark-article n t))
(defun gnus-agent-toggle-mark (n)
"Toggle the downloadable mark from the next N articles.
If N is negative, toggle backward instead. The difference between N and
the actual number of articles toggled is returned."
(interactive "p")
(gnus-agent-mark-article n 'toggle))
(defun gnus-summary-set-agent-mark (article &optional unmark)
"Mark ARTICLE as downloadable."
(let ((unmark (if (and (not (null unmark)) (not (eq t unmark)))
(memq article gnus-newsgroup-downloadable)
unmark)))
(if unmark
(progn
(setq gnus-newsgroup-downloadable
(delq article gnus-newsgroup-downloadable))
(push article gnus-newsgroup-undownloaded))
(setq gnus-newsgroup-undownloaded
(delq article gnus-newsgroup-undownloaded))
(push article gnus-newsgroup-downloadable))
(gnus-summary-update-mark
(if unmark gnus-undownloaded-mark gnus-downloadable-mark)
'unread)))
(defun gnus-agent-get-undownloaded-list ()
"Mark all unfetched articles as read."
(let ((gnus-command-method (gnus-find-method-for-group gnus-newsgroup-name)))
(when (and (not gnus-plugged)
(gnus-agent-method-p gnus-command-method))
(gnus-agent-load-alist gnus-newsgroup-name)
(let ((articles (append gnus-newsgroup-unreads
gnus-newsgroup-marked
gnus-newsgroup-dormant))
article)
(while (setq article (pop articles))
(unless (or (cdr (assq article gnus-agent-article-alist))
(memq article gnus-newsgroup-downloadable)
(memq article gnus-newsgroup-cached))
(push article gnus-newsgroup-undownloaded))))
(let ((articles gnus-newsgroup-downloadable)
article)
(while (setq article (pop articles))
(when (cdr (assq article gnus-agent-article-alist))
(setq gnus-newsgroup-downloadable
(delq article gnus-newsgroup-downloadable))))))))
(defun gnus-agent-catchup ()
"Mark all undownloaded articles as read."
(interactive)
(save-excursion
(while gnus-newsgroup-undownloaded
(gnus-summary-mark-article
(pop gnus-newsgroup-undownloaded) gnus-catchup-mark)))
(gnus-summary-position-point))
(defun gnus-agent-save-active (method)
(gnus-agent-save-active-1 method 'gnus-active-to-gnus-format))
(defun gnus-agent-save-active-1 (method function)
(when (gnus-agent-method-p method)
(let* ((gnus-command-method method)
(new (gnus-make-hashtable (count-lines (point-min) (point-max))))
(file (gnus-agent-lib-file "active")))
(funcall function nil new)
(gnus-agent-write-active file new)
(erase-buffer)
(nnheader-insert-file-contents file))))
(defun gnus-agent-write-active (file new)
(let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
(file (gnus-agent-lib-file "active"))
elem osym)
(when (file-exists-p file)
(with-temp-buffer
(nnheader-insert-file-contents file)
(gnus-active-to-gnus-format nil orig))
(mapatoms
(lambda (sym)
(when (and sym (boundp sym))
(if (and (boundp (setq osym (intern (symbol-name sym) orig)))
(setq elem (symbol-value osym)))
(setcdr elem (cdr (symbol-value sym)))
(set (intern (symbol-name sym) orig) (symbol-value sym)))))
new))
(gnus-make-directory (file-name-directory file))
(let ((coding-system-for-write gnus-agent-file-coding-system))
(gnus-write-active-file file orig t))))
(defun gnus-agent-save-groups (method)
(gnus-agent-save-active-1 method 'gnus-groups-to-gnus-format))
(defun gnus-agent-save-group-info (method group active)
(when (gnus-agent-method-p method)
(let* ((gnus-command-method method)
(coding-system-for-write nnheader-file-coding-system)
(file-name-coding-system nnmail-pathname-coding-system)
(file (gnus-agent-lib-file "active"))
oactive)
(gnus-make-directory (file-name-directory file))
(with-temp-file file
(mm-disable-multibyte)
(when (file-exists-p file)
(nnheader-insert-file-contents file))
(goto-char (point-min))
(when (re-search-forward
(concat "^" (regexp-quote group) " ") nil t)
(save-excursion
(save-restriction
(narrow-to-region (match-beginning 0)
(progn
(forward-line 1)
(point)))
(setq oactive (car (nnmail-parse-active)))))
(gnus-delete-line))
(insert (format "%S %d %d y\n" (intern group)
(cdr active)
(or (car oactive) (car active))))
(goto-char (point-max))
(while (search-backward "\\." nil t)
(delete-char 1))))))
(defun gnus-agent-group-path (group)
"Translate GROUP into a path."
(if nnmail-use-long-file-names
(gnus-group-real-name group)
(nnheader-translate-file-chars
(nnheader-replace-chars-in-string
(nnheader-replace-duplicate-chars-in-string
(nnheader-replace-chars-in-string
(gnus-group-real-name group)
?/ ?_)
?. ?_)
?. ?/))))
(defun gnus-agent-method-p (method)
"Say whether METHOD is covered by the agent."
(member method gnus-agent-covered-methods))
(defun gnus-agent-get-function (method)
(if (and (not gnus-plugged)
(gnus-agent-method-p method))
(progn
(require 'nnagent)
'nnagent)
(car method)))
(defun gnus-agent-history-buffer ()
(cdr (assoc (gnus-agent-method) gnus-agent-history-buffers)))
(defun gnus-agent-open-history ()
(save-excursion
(push (cons (gnus-agent-method)
(set-buffer (gnus-get-buffer-create
(format " *Gnus agent %s history*"
(gnus-agent-method)))))
gnus-agent-history-buffers)
(mm-disable-multibyte) (erase-buffer)
(insert "\n")
(let ((file (gnus-agent-lib-file "history")))
(when (file-exists-p file)
(nnheader-insert-file-contents file))
(set (make-local-variable 'gnus-agent-file-name) file))))
(defun gnus-agent-save-history ()
(save-excursion
(set-buffer gnus-agent-current-history)
(gnus-make-directory (file-name-directory gnus-agent-file-name))
(let ((coding-system-for-write gnus-agent-file-coding-system))
(write-region (1+ (point-min)) (point-max)
gnus-agent-file-name nil 'silent))))
(defun gnus-agent-close-history ()
(when (gnus-buffer-live-p gnus-agent-current-history)
(kill-buffer gnus-agent-current-history)
(setq gnus-agent-history-buffers
(delq (assoc (gnus-agent-method) gnus-agent-history-buffers)
gnus-agent-history-buffers))))
(defun gnus-agent-enter-history (id group-arts date)
(save-excursion
(set-buffer gnus-agent-current-history)
(goto-char (point-max))
(let ((p (point)))
(insert id "\t" (number-to-string date) "\t")
(while group-arts
(insert (format "%S" (intern (caar group-arts)))
" " (number-to-string (cdr (pop group-arts)))
" "))
(insert "\n")
(while (search-backward "\\." p t)
(delete-char 1)))))
(defun gnus-agent-article-in-history-p (id)
(save-excursion
(set-buffer (gnus-agent-history-buffer))
(goto-char (point-min))
(search-forward (concat "\n" id "\t") nil t)))
(defun gnus-agent-history-path (id)
(save-excursion
(set-buffer (gnus-agent-history-buffer))
(goto-char (point-min))
(when (search-forward (concat "\n" id "\t") nil t)
(let ((method (gnus-agent-method)))
(let (paths group)
(while (not (numberp (setq group (read (current-buffer)))))
(push (concat method "/" group) paths))
(nreverse paths))))))
(defun gnus-agent-fetch-articles (group articles)
"Fetch ARTICLES from GROUP and put them into the Agent."
(when articles
(while (and articles
(cdr (assq (car articles) gnus-agent-article-alist)))
(pop articles))
(let ((arts articles))
(while (cdr arts)
(if (cdr (assq (cadr arts) gnus-agent-article-alist))
(setcdr arts (cddr arts))
(setq arts (cdr arts)))))
(when articles
(let ((dir (concat
(gnus-agent-directory)
(gnus-agent-group-path group) "/"))
(date (time-to-days (current-time)))
(case-fold-search t)
pos crosses id elem)
(gnus-make-directory dir)
(gnus-message 7 "Fetching articles for %s..." group)
(if (gnus-check-backend-function 'retrieve-articles group)
(setq pos (gnus-retrieve-articles articles group))
(with-temp-buffer
(let (article)
(while (setq article (pop articles))
(when (or
(gnus-backlog-request-article group article
nntp-server-buffer)
(gnus-request-article article group))
(goto-char (point-max))
(push (cons article (point)) pos)
(insert-buffer-substring nntp-server-buffer)))
(copy-to-buffer nntp-server-buffer (point-min) (point-max))
(setq pos (nreverse pos)))))
(save-excursion
(set-buffer nntp-server-buffer)
(while pos
(narrow-to-region (cdar pos) (or (cdadr pos) (point-max)))
(goto-char (point-min))
(when (search-forward "\n\n" nil t)
(when (search-backward "\nXrefs: " nil t)
(skip-chars-forward "^ ")
(skip-chars-forward " ")
(setq crosses nil)
(while (looking-at "\\([^: \n]+\\):\\([0-9]+\\) +")
(push (cons (buffer-substring (match-beginning 1)
(match-end 1))
(buffer-substring (match-beginning 2)
(match-end 2)))
crosses)
(goto-char (match-end 0)))
(gnus-agent-crosspost crosses (caar pos))))
(goto-char (point-min))
(if (not (re-search-forward "^Message-ID: *<\\([^>\n]+\\)>" nil t))
(setq id "No-Message-ID-in-article")
(setq id (buffer-substring (match-beginning 1) (match-end 1))))
(let ((coding-system-for-write
gnus-agent-file-coding-system))
(write-region (point-min) (point-max)
(concat dir (number-to-string (caar pos)))
nil 'silent))
(when (setq elem (assq (caar pos) gnus-agent-article-alist))
(setcdr elem t))
(gnus-agent-enter-history
id (or crosses (list (cons group (caar pos)))) date)
(widen)
(pop pos)))
(gnus-agent-save-alist group)))))
(defun gnus-agent-crosspost (crosses article)
(let (gnus-agent-article-alist group alist beg end)
(save-excursion
(set-buffer gnus-agent-overview-buffer)
(when (nnheader-find-nov-line article)
(forward-word 1)
(setq beg (point))
(setq end (progn (forward-line 1) (point)))))
(while crosses
(setq group (caar crosses))
(unless (setq alist (assoc group gnus-agent-group-alist))
(push (setq alist (list group (gnus-agent-load-alist (caar crosses))))
gnus-agent-group-alist))
(setcdr alist (cons (cons (cdar crosses) t) (cdr alist)))
(save-excursion
(set-buffer (gnus-get-buffer-create (format " *Gnus agent overview %s*"
group)))
(when (= (point-max) (point-min))
(push (cons group (current-buffer)) gnus-agent-buffer-alist)
(ignore-errors
(nnheader-insert-file-contents
(gnus-agent-article-name ".overview" group))))
(nnheader-find-nov-line (string-to-number (cdar crosses)))
(insert (string-to-number (cdar crosses)))
(insert-buffer-substring gnus-agent-overview-buffer beg end))
(pop crosses))))
(defun gnus-agent-flush-cache ()
(save-excursion
(while gnus-agent-buffer-alist
(set-buffer (cdar gnus-agent-buffer-alist))
(let ((coding-system-for-write
gnus-agent-file-coding-system))
(write-region (point-min) (point-max)
(gnus-agent-article-name ".overview"
(caar gnus-agent-buffer-alist))
nil 'silent))
(pop gnus-agent-buffer-alist))
(while gnus-agent-group-alist
(with-temp-file (caar gnus-agent-group-alist)
(princ (cdar gnus-agent-group-alist))
(insert "\n"))
(pop gnus-agent-group-alist))))
(if (fboundp 'union)
(defalias 'gnus-agent-union 'union)
(defun gnus-agent-union (l1 l2)
"Set union of lists L1 and L2."
(cond ((null l1) l2)
((null l2) l1)
((equal l1 l2) l1)
(t
(or (>= (length l1) (length l2))
(setq l1 (prog1 l2 (setq l2 l1))))
(while l2
(or (memq (car l2) l1)
(push (car l2) l1))
(pop l2))
l1))))
(defun gnus-agent-fetch-headers (group &optional force)
(let ((articles (gnus-list-of-unread-articles group))
(gnus-decode-encoded-word-function 'identity)
(file (gnus-agent-article-name ".overview" group)))
(dolist (arts (gnus-info-marks (gnus-get-info group)))
(setq articles (gnus-agent-union (gnus-uncompress-sequence (cdr arts))
articles)))
(setq articles (sort articles '<))
(when (gnus-agent-load-alist group)
(setq articles (gnus-sorted-intersection
articles
(gnus-uncompress-range
(cons (1+ (caar (last gnus-agent-article-alist)))
(cdr (gnus-active group)))))))
(gnus-make-directory (nnheader-translate-file-chars
(file-name-directory file) t))
(when articles
(gnus-message 7 "Fetching headers for %s..." group)
(save-excursion
(set-buffer nntp-server-buffer)
(unless (eq 'nov (gnus-retrieve-headers articles group))
(nnvirtual-convert-headers))
(copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
(when (file-exists-p file)
(gnus-agent-braid-nov group articles file))
(let ((coding-system-for-write
gnus-agent-file-coding-system))
(write-region (point-min) (point-max) file nil 'silent))
(gnus-agent-save-alist group articles nil)
(gnus-agent-enter-history
"last-header-fetched-for-session"
(list (cons group (nth (- (length articles) 1) articles)))
(time-to-days (current-time)))
articles))))
(defsubst gnus-agent-copy-nov-line (article)
(let (b e)
(set-buffer gnus-agent-overview-buffer)
(setq b (point))
(if (eq article (read (current-buffer)))
(setq e (progn (forward-line 1) (point)))
(progn
(beginning-of-line)
(setq e b)))
(set-buffer nntp-server-buffer)
(insert-buffer-substring gnus-agent-overview-buffer b e)))
(defun gnus-agent-braid-nov (group articles file)
(set-buffer gnus-agent-overview-buffer)
(goto-char (point-min))
(set-buffer nntp-server-buffer)
(erase-buffer)
(nnheader-insert-file-contents file)
(goto-char (point-max))
(if (or (= (point-min) (point-max))
(progn
(forward-line -1)
(< (read (current-buffer)) (car articles))))
(progn
(goto-char (point-max))
(insert-buffer-substring gnus-agent-overview-buffer))
(nnheader-find-nov-line (car articles))
(gnus-agent-copy-nov-line (car articles))
(pop articles)
(while (and articles
(not (eobp)))
(while (and (not (eobp))
(< (read (current-buffer)) (car articles)))
(forward-line 1))
(beginning-of-line)
(unless (eobp)
(gnus-agent-copy-nov-line (car articles))
(setq articles (cdr articles))))
(when articles
(let (b e)
(set-buffer gnus-agent-overview-buffer)
(setq b (point)
e (point-max))
(set-buffer nntp-server-buffer)
(insert-buffer-substring gnus-agent-overview-buffer b e)))))
(defun gnus-agent-load-alist (group &optional dir)
"Load the article-state alist for GROUP."
(setq gnus-agent-article-alist
(gnus-agent-read-file
(if dir
(expand-file-name ".agentview" dir)
(gnus-agent-article-name ".agentview" group)))))
(defun gnus-agent-save-alist (group &optional articles state dir)
"Save the article-state alist for GROUP."
(let ((file-name-coding-system nnmail-pathname-coding-system))
(with-temp-file (if dir
(expand-file-name ".agentview" dir)
(gnus-agent-article-name ".agentview" group))
(princ (setq gnus-agent-article-alist
(nconc gnus-agent-article-alist
(mapcar (lambda (article) (cons article state))
articles)))
(current-buffer))
(insert "\n"))))
(defun gnus-agent-article-name (article group)
(expand-file-name (if (stringp article) article (string-to-number article))
(file-name-as-directory
(expand-file-name (gnus-agent-group-path group)
(gnus-agent-directory)))))
(defun gnus-agent-batch-confirmation (msg)
"Show error message and return t."
(gnus-message 1 msg)
t)
(defun gnus-agent-batch-fetch ()
"Start Gnus and fetch session."
(interactive)
(gnus)
(let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
(gnus-agent-fetch-session))
(gnus-group-exit))
(defun gnus-agent-fetch-session ()
"Fetch all articles and headers that are eligible for fetching."
(interactive)
(unless gnus-agent-covered-methods
(error "No servers are covered by the Gnus agent"))
(unless gnus-plugged
(error "Can't fetch articles while Gnus is unplugged"))
(let ((methods gnus-agent-covered-methods)
groups group gnus-command-method)
(save-excursion
(while methods
(condition-case err
(progn
(setq gnus-command-method (car methods))
(when (or (gnus-server-opened gnus-command-method)
(gnus-open-server gnus-command-method))
(setq groups (gnus-groups-from-server (car methods)))
(gnus-agent-with-fetch
(while (setq group (pop groups))
(when (<= (gnus-group-level group) gnus-agent-handle-level)
(gnus-agent-fetch-group-1 group gnus-command-method))))))
(error
(unless (funcall gnus-agent-confirmation-function
(format "Error (%s). Continue? " err))
(error "Cannot fetch articles into the Gnus agent")))
(quit
(unless (funcall gnus-agent-confirmation-function
(format "Quit (%s). Continue? " err))
(signal 'quit "Cannot fetch articles into the Gnus agent."))))
(pop methods))
(gnus-message 6 "Finished fetching articles into the Gnus agent"))))
(defun gnus-agent-fetch-group-1 (group method)
"Fetch GROUP."
(let ((gnus-command-method method)
(gnus-newsgroup-name group)
gnus-newsgroup-dependencies gnus-newsgroup-headers
gnus-newsgroup-scored gnus-headers gnus-score
gnus-use-cache articles arts
category predicate info marks score-param
(gnus-summary-expunge-below gnus-summary-expunge-below)
(gnus-summary-mark-below gnus-summary-mark-below)
(gnus-orphan-score gnus-orphan-score)
)
(unless (gnus-check-group group)
(error "Can't open server for %s" group))
(when (and (or (gnus-active group) (gnus-activate-group group))
(setq articles (gnus-agent-fetch-headers group))
(let ((nntp-server-buffer gnus-agent-overview-buffer))
(setq gnus-newsgroup-dependencies
(make-vector (length articles) 0))
(setq gnus-newsgroup-headers
(gnus-get-newsgroup-headers-xover articles nil nil
group))
(gnus-agent-create-buffer)))
(setq category (gnus-group-category group))
(setq predicate
(gnus-get-predicate
(or (gnus-group-find-parameter group 'agent-predicate t)
(cadr category))))
(if (memq (caaddr predicate) '(gnus-agent-true gnus-agent-false))
(setq arts
(and (eq (caaddr predicate) 'gnus-agent-true) articles))
(setq arts nil)
(setq score-param
(or (gnus-group-get-parameter group 'agent-score t)
(caddr category)))
(cond
((not score-param))
((eq score-param 'file)
(setq score-param (gnus-all-score-files group)))
((stringp (car score-param)))
(t
(setq score-param (list (list score-param)))))
(when score-param
(gnus-score-headers score-param))
(while (setq gnus-headers (pop gnus-newsgroup-headers))
(setq gnus-score
(or (cdr (assq (mail-header-number gnus-headers)
gnus-newsgroup-scored))
gnus-summary-default-score))
(when (funcall predicate)
(push (mail-header-number gnus-headers)
arts))))
(when arts
(gnus-agent-fetch-articles group arts)))
(setq arts (assq 'download (gnus-info-marks
(setq info (gnus-get-info group)))))
(when (cdr arts)
(gnus-agent-fetch-articles
group (gnus-uncompress-range (cdr arts)))
(setq marks (delq arts (gnus-info-marks info)))
(gnus-info-set-marks info marks)
(gnus-dribble-enter
(concat "(gnus-group-set-info '"
(gnus-prin1-to-string info)
")")))))
(defvar gnus-category-mode-hook nil
"Hook run in `gnus-category-mode' buffers.")
(defvar gnus-category-line-format " %(%20c%): %g\n"
"Format of category lines.")
(defvar gnus-category-mode-line-format "Gnus: %%b"
"The format specification for the category mode line.")
(defvar gnus-agent-short-article 100
"Articles that have fewer lines than this are short.")
(defvar gnus-agent-long-article 200
"Articles that have more lines than this are long.")
(defvar gnus-agent-low-score 0
"Articles that have a score lower than this have a low score.")
(defvar gnus-agent-high-score 0
"Articles that have a score higher than this have a high score.")
(defvar gnus-category-buffer "*Agent Category*")
(defvar gnus-category-line-format-alist
`((?c gnus-tmp-name ?s)
(?g gnus-tmp-groups ?d)))
(defvar gnus-category-mode-line-format-alist
`((?u user-defined ?s)))
(defvar gnus-category-line-format-spec nil)
(defvar gnus-category-mode-line-format-spec nil)
(defvar gnus-category-mode-map nil)
(put 'gnus-category-mode 'mode-class 'special)
(unless gnus-category-mode-map
(setq gnus-category-mode-map (make-sparse-keymap))
(suppress-keymap gnus-category-mode-map)
(gnus-define-keys gnus-category-mode-map
"q" gnus-category-exit
"k" gnus-category-kill
"c" gnus-category-copy
"a" gnus-category-add
"p" gnus-category-edit-predicate
"g" gnus-category-edit-groups
"s" gnus-category-edit-score
"l" gnus-category-list
"\C-c\C-i" gnus-info-find-node
"\C-c\C-b" gnus-bug))
(defvar gnus-category-menu-hook nil
"*Hook run after the creation of the menu.")
(defun gnus-category-make-menu-bar ()
(gnus-turn-off-edit-menu 'category)
(unless (boundp 'gnus-category-menu)
(easy-menu-define
gnus-category-menu gnus-category-mode-map ""
'("Categories"
["Add" gnus-category-add t]
["Kill" gnus-category-kill t]
["Copy" gnus-category-copy t]
["Edit predicate" gnus-category-edit-predicate t]
["Edit score" gnus-category-edit-score t]
["Edit groups" gnus-category-edit-groups t]
["Exit" gnus-category-exit t]))
(gnus-run-hooks 'gnus-category-menu-hook)))
(defun gnus-category-mode ()
"Major mode for listing and editing agent categories.
All normal editing commands are switched off.
\\<gnus-category-mode-map>
For more in-depth information on this mode, read the manual
(`\\[gnus-info-find-node]').
The following commands are available:
\\{gnus-category-mode-map}"
(interactive)
(when (gnus-visual-p 'category-menu 'menu)
(gnus-category-make-menu-bar))
(kill-all-local-variables)
(gnus-simplify-mode-line)
(setq major-mode 'gnus-category-mode)
(setq mode-name "Category")
(gnus-set-default-directory)
(setq mode-line-process nil)
(use-local-map gnus-category-mode-map)
(buffer-disable-undo)
(setq truncate-lines t)
(setq buffer-read-only t)
(gnus-run-hooks 'gnus-category-mode-hook))
(defalias 'gnus-category-position-point 'gnus-goto-colon)
(defun gnus-category-insert-line (category)
(let* ((gnus-tmp-name (car category))
(gnus-tmp-groups (length (cadddr category))))
(beginning-of-line)
(gnus-add-text-properties
(point)
(prog1 (1+ (point))
(eval gnus-category-line-format-spec))
(list 'gnus-category gnus-tmp-name))))
(defun gnus-enter-category-buffer ()
"Go to the Category buffer."
(interactive)
(gnus-category-setup-buffer)
(gnus-configure-windows 'category)
(gnus-category-prepare))
(defun gnus-category-setup-buffer ()
(unless (get-buffer gnus-category-buffer)
(save-excursion
(set-buffer (gnus-get-buffer-create gnus-category-buffer))
(gnus-category-mode))))
(defun gnus-category-prepare ()
(gnus-set-format 'category-mode)
(gnus-set-format 'category t)
(let ((alist gnus-category-alist)
(buffer-read-only nil))
(erase-buffer)
(while alist
(gnus-category-insert-line (pop alist)))
(goto-char (point-min))
(gnus-category-position-point)))
(defun gnus-category-name ()
(or (get-text-property (gnus-point-at-bol) 'gnus-category)
(error "No category on the current line")))
(defun gnus-category-read ()
"Read the category alist."
(setq gnus-category-alist
(or (gnus-agent-read-file
(nnheader-concat gnus-agent-directory "lib/categories"))
(list (list 'default 'short nil nil)))))
(defun gnus-category-write ()
"Write the category alist."
(setq gnus-category-predicate-cache nil
gnus-category-group-cache nil)
(gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
(with-temp-file (nnheader-concat gnus-agent-directory "lib/categories")
(prin1 gnus-category-alist (current-buffer))))
(defun gnus-category-edit-predicate (category)
"Edit the predicate for CATEGORY."
(interactive (list (gnus-category-name)))
(let ((info (assq category gnus-category-alist)))
(gnus-edit-form
(cadr info) (format "Editing the predicate for category %s" category)
`(lambda (predicate)
(setcar (cdr (assq ',category gnus-category-alist)) predicate)
(gnus-category-write)
(gnus-category-list)))))
(defun gnus-category-edit-score (category)
"Edit the score expression for CATEGORY."
(interactive (list (gnus-category-name)))
(let ((info (assq category gnus-category-alist)))
(gnus-edit-form
(caddr info)
(format "Editing the score expression for category %s" category)
`(lambda (groups)
(setcar (cddr (assq ',category gnus-category-alist)) groups)
(gnus-category-write)
(gnus-category-list)))))
(defun gnus-category-edit-groups (category)
"Edit the group list for CATEGORY."
(interactive (list (gnus-category-name)))
(let ((info (assq category gnus-category-alist)))
(gnus-edit-form
(cadddr info) (format "Editing the group list for category %s" category)
`(lambda (groups)
(setcar (nthcdr 3 (assq ',category gnus-category-alist)) groups)
(gnus-category-write)
(gnus-category-list)))))
(defun gnus-category-kill (category)
"Kill the current category."
(interactive (list (gnus-category-name)))
(let ((info (assq category gnus-category-alist))
(buffer-read-only nil))
(gnus-delete-line)
(setq gnus-category-alist (delq info gnus-category-alist))
(gnus-category-write)))
(defun gnus-category-copy (category to)
"Copy the current category."
(interactive (list (gnus-category-name) (intern (read-string "New name: "))))
(let ((info (assq category gnus-category-alist)))
(push (list to (gnus-copy-sequence (cadr info))
(gnus-copy-sequence (caddr info)) nil)
gnus-category-alist)
(gnus-category-write)
(gnus-category-list)))
(defun gnus-category-add (category)
"Create a new category."
(interactive "SCategory name: ")
(when (assq category gnus-category-alist)
(error "Category %s already exists" category))
(push (list category 'false nil nil)
gnus-category-alist)
(gnus-category-write)
(gnus-category-list))
(defun gnus-category-list ()
"List all categories."
(interactive)
(gnus-category-prepare))
(defun gnus-category-exit ()
"Return to the group buffer."
(interactive)
(kill-buffer (current-buffer))
(gnus-configure-windows 'group t))
(defvar gnus-category-not (list '! 'not (intern (format "%c" 172))))
(defvar gnus-category-predicate-alist
'((spam . gnus-agent-spam-p)
(short . gnus-agent-short-p)
(long . gnus-agent-long-p)
(low . gnus-agent-low-scored-p)
(high . gnus-agent-high-scored-p)
(true . gnus-agent-true)
(false . gnus-agent-false))
"Mapping from short score predicate symbols to predicate functions.")
(defun gnus-agent-spam-p ()
"Say whether an article is spam or not."
(unless gnus-agent-spam-hashtb
(setq gnus-agent-spam-hashtb (gnus-make-hashtable 1000)))
(if (not (equal (mail-header-references gnus-headers) ""))
nil
(let ((string (gnus-simplify-subject (mail-header-subject gnus-headers))))
(prog1
(gnus-gethash string gnus-agent-spam-hashtb)
(gnus-sethash string t gnus-agent-spam-hashtb)))))
(defun gnus-agent-short-p ()
"Say whether an article is short or not."
(< (mail-header-lines gnus-headers) gnus-agent-short-article))
(defun gnus-agent-long-p ()
"Say whether an article is long or not."
(> (mail-header-lines gnus-headers) gnus-agent-long-article))
(defun gnus-agent-low-scored-p ()
"Say whether an article has a low score or not."
(< gnus-score gnus-agent-low-score))
(defun gnus-agent-high-scored-p ()
"Say whether an article has a high score or not."
(> gnus-score gnus-agent-high-score))
(defun gnus-category-make-function (cat)
"Make a function from category CAT."
`(lambda () ,(gnus-category-make-function-1 cat)))
(defun gnus-agent-true ()
"Return t."
t)
(defun gnus-agent-false ()
"Return nil."
nil)
(defun gnus-category-make-function-1 (cat)
"Make a function from category CAT."
(cond
((or (symbolp cat)
(gnus-functionp cat))
`(,(or (cdr (assq cat gnus-category-predicate-alist))
cat)))
((consp cat)
`(,(cond
((memq (car cat) '(& and))
'and)
((memq (car cat) '(| or))
'or)
((memq (car cat) gnus-category-not)
'not))
,@(mapcar 'gnus-category-make-function-1 (cdr cat))))
(t
(error "Unknown category type: %s" cat))))
(defun gnus-get-predicate (predicate)
"Return the predicate for CATEGORY."
(or (cdr (assoc predicate gnus-category-predicate-cache))
(cdar (push (cons predicate
(gnus-category-make-function predicate))
gnus-category-predicate-cache))))
(defun gnus-group-category (group)
"Return the category GROUP belongs to."
(unless gnus-category-group-cache
(setq gnus-category-group-cache (gnus-make-hashtable 1000))
(let ((cs gnus-category-alist)
groups cat)
(while (setq cat (pop cs))
(setq groups (cadddr cat))
(while groups
(gnus-sethash (pop groups) cat gnus-category-group-cache)))))
(or (gnus-gethash group gnus-category-group-cache)
(assq 'default gnus-category-alist)))
(defun gnus-agent-expire ()
"Expire all old articles."
(interactive)
(let ((methods gnus-agent-covered-methods)
(day (- (time-to-days (current-time)) gnus-agent-expire-days))
gnus-command-method sym group articles
history overview file histories elem art nov-file low info
unreads marked article orig lowest highest)
(save-excursion
(setq overview (gnus-get-buffer-create " *expire overview*"))
(while (setq gnus-command-method (pop methods))
(when (file-exists-p (gnus-agent-lib-file "active"))
(with-temp-buffer
(nnheader-insert-file-contents (gnus-agent-lib-file "active"))
(gnus-active-to-gnus-format
gnus-command-method
(setq orig (gnus-make-hashtable
(count-lines (point-min) (point-max))))))
(let ((expiry-hashtb (gnus-make-hashtable 1023)))
(gnus-agent-open-history)
(set-buffer
(setq gnus-agent-current-history
(setq history (gnus-agent-history-buffer))))
(goto-char (point-min))
(when (> (buffer-size) 1)
(goto-char (point-min))
(while (not (eobp))
(skip-chars-forward "^\t")
(if (> (read (current-buffer)) day)
(forward-line 1)
(while (not (eolp))
(setq sym (let ((obarray expiry-hashtb) s)
(setq s (read (current-buffer)))
(if (stringp s) (intern s) s)))
(if (boundp sym)
(set sym (cons (cons (read (current-buffer)) (point))
(symbol-value sym)))
(set sym (list (cons (read (current-buffer)) (point)))))
(skip-chars-forward " "))
(forward-line 1)))
(mapatoms
(lambda (sym)
(setq group (symbol-name sym)
articles (sort (symbol-value sym) 'car-less-than-car)
low (car (gnus-active group))
info (gnus-get-info group)
unreads (ignore-errors
(gnus-list-of-unread-articles group))
marked (nconc
(gnus-uncompress-range
(cdr (assq 'tick (gnus-info-marks info))))
(gnus-uncompress-range
(cdr (assq 'dormant
(gnus-info-marks info)))))
nov-file (gnus-agent-article-name ".overview" group)
lowest nil
highest nil)
(gnus-agent-load-alist group)
(gnus-message 5 "Expiring articles in %s" group)
(set-buffer overview)
(erase-buffer)
(when (file-exists-p nov-file)
(nnheader-insert-file-contents nov-file))
(goto-char (point-min))
(setq article 0)
(while (setq elem (pop articles))
(setq article (car elem))
(when (or (null low)
(< article low)
gnus-agent-expire-all
(and (not (memq article unreads))
(not (memq article marked))))
(while (and (not (eobp))
(or (not (numberp
(setq art (read (current-buffer)))))
(< art article)))
(if (and (numberp art)
(file-exists-p
(gnus-agent-article-name
(number-to-string art) group)))
(progn
(unless lowest
(setq lowest art))
(setq highest art)
(forward-line 1))
(gnus-delete-line)))
(if (or (eobp)
(/= art article))
(beginning-of-line)
(gnus-delete-line))
(when (file-exists-p
(setq file (gnus-agent-article-name
(number-to-string article)
group)))
(delete-file file))
(push (cdr elem) histories)))
(gnus-make-directory (file-name-directory nov-file))
(let ((coding-system-for-write
gnus-agent-file-coding-system))
(write-region (point-min) (point-max) nov-file nil 'silent))
(setq gnus-agent-article-alist
(sort gnus-agent-article-alist 'car-less-than-car))
(let* ((alist gnus-agent-article-alist)
(prev (cons nil alist))
(first prev)
expired)
(while (and alist
(<= (caar alist) article))
(if (or (not (cdar alist))
(not (file-exists-p
(gnus-agent-article-name
(number-to-string
(caar alist))
group))))
(progn
(push (caar alist) expired)
(setcdr prev (setq alist (cdr alist))))
(setq prev alist
alist (cdr alist))))
(setq gnus-agent-article-alist (cdr first))
(gnus-agent-save-alist group)
(when (and info (caar gnus-agent-article-alist))
(setcar (nthcdr 2 info)
(gnus-range-add
(nth 2 info)
(cons 1 (- (caar gnus-agent-article-alist) 1)))))
(when (and info
expired
(or (not (caar gnus-agent-article-alist))
(> (car expired)
(caar gnus-agent-article-alist))))
(setcar (nthcdr 2 info)
(gnus-add-to-range
(nth 2 info)
(nreverse expired))))
(gnus-dribble-enter
(concat "(gnus-group-set-info '"
(gnus-prin1-to-string info)
")")))
(when lowest
(if (gnus-gethash group orig)
(setcar (gnus-gethash group orig) lowest)
(gnus-sethash group (cons lowest highest) orig))))
expiry-hashtb)
(set-buffer history)
(setq histories (nreverse (sort histories '<)))
(while histories
(goto-char (pop histories))
(gnus-delete-line))
(gnus-agent-save-history)
(gnus-agent-close-history)
(gnus-write-active-file
(gnus-agent-lib-file "active") orig))
(gnus-message 4 "Expiry...done")))))))
(defun gnus-agent-batch ()
(interactive)
(let ((init-file-user "")
(gnus-always-read-dribble-file t))
(gnus))
(gnus-group-send-drafts)
(gnus-agent-fetch-session))
(provide 'gnus-agent)