;;; gnus-int.el --- backend interface functions for Gnus
-;; Copyright (C) 1996,97,98 Free Software Foundation, Inc.
+;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002
+;; Free Software Foundation, Inc.
-;; Author: Lars Magne Ingebrigtsen <larsi@ifi.uio.no>
+;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; Keywords: news
;; This file is part of GNU Emacs.
(eval-when-compile (require 'cl))
(require 'gnus)
+(require 'message)
+(require 'gnus-range)
+
+(eval-when-compile
+ (defun gnus-agent-expire (a b c)))
(defcustom gnus-open-server-hook nil
"Hook called just before opening connection to the news server."
:group 'gnus-start
:type 'hook)
+(defcustom gnus-server-unopen-status nil
+ "The default status if the server is not able to open.
+If the server is covered by Gnus agent, the possible values are
+`denied', set the server denied; `offline', set the server offline;
+nil, ask user. If the server is not covered by Gnus agent, set the
+server denied."
+ :group 'gnus-start
+ :type '(choice (const :tag "Ask" nil)
+ (const :tag "Deny server" denied)
+ (const :tag "Unplugg Agent" offline)))
+
+(defvar gnus-internal-registry-spool-current-method nil
+ "The current method, for the registry.")
+
;;;
;;; Server Communication
;;;
(list 'nnmh-directory
(file-name-as-directory
(expand-file-name
- (concat "~/" (substring
- gnus-nntp-server 1)))))
+ (substring gnus-nntp-server 1) "~/")))
(list 'nnmh-get-new-mail nil)))
(t
(list 'nntp gnus-nntp-server)))))
;; gnus-open-server-hook might have opened it
(gnus-server-opened gnus-select-method)
(gnus-open-server gnus-select-method)
+ gnus-batch-mode
(gnus-y-or-n-p
(format
"%s (%s) open error: '%s'. Continue? "
"Check whether the connection to METHOD is down.
If METHOD is nil, use `gnus-select-method'.
If it is down, start it up (again)."
- (let ((method (or method gnus-select-method)))
+ (let ((method (or method gnus-select-method))
+ result)
;; Transform virtual server names into select methods.
(when (stringp method)
(setq method (gnus-server-to-method method)))
(format " on %s" (nth 1 method)))))
(gnus-run-hooks 'gnus-open-server-hook)
(prog1
- (gnus-open-server method)
+ (condition-case ()
+ (setq result (gnus-open-server method))
+ (quit (message "Quit gnus-check-server")
+ nil))
(unless silent
- (message ""))))))
+ (gnus-message 5 "Opening %s server%s...%s" (car method)
+ (if (equal (nth 1 method) "") ""
+ (format " on %s" (nth 1 method)))
+ (if result "done" "failed")))))))
(defun gnus-get-function (method function &optional noerror)
"Return a function symbol based on METHOD and FUNCTION."
(error "Attempted use of a nil select method"))
(when (stringp method)
(setq method (gnus-server-to-method method)))
- (let ((func (intern (format "%s-%s" (if gnus-agent
- (gnus-agent-get-function method)
- (car method))
- function))))
- ;; If the functions isn't bound, we require the backend in
- ;; question.
+ ;; Check cache of constructed names.
+ (let* ((method-sym (if gnus-agent
+ (gnus-agent-get-function method)
+ (car method)))
+ (method-fns (get method-sym 'gnus-method-functions))
+ (func (let ((method-fnlist-elt (assq function method-fns)))
+ (unless method-fnlist-elt
+ (setq method-fnlist-elt
+ (cons function
+ (intern (format "%s-%s" method-sym function))))
+ (put method-sym 'gnus-method-functions
+ (cons method-fnlist-elt method-fns)))
+ (cdr method-fnlist-elt))))
+ ;; Maybe complain if there is no function.
(unless (fboundp func)
+ (unless (car method)
+ (error "Trying to require a method that doesn't exist"))
(require (car method))
- (when (and (not (fboundp func))
- (not noerror))
- ;; This backend doesn't implement this function.
- (error "No such function: %s" func)))
+ (when (not (fboundp func))
+ (if noerror
+ (setq func nil)
+ (error "No such function: %s" func))))
func))
\f
nil)
;; Open the server.
(let ((result
- (funcall (gnus-get-function gnus-command-method 'open-server)
- (nth 1 gnus-command-method)
- (nthcdr 2 gnus-command-method))))
+ (condition-case ()
+ (funcall (gnus-get-function gnus-command-method 'open-server)
+ (nth 1 gnus-command-method)
+ (nthcdr 2 gnus-command-method))
+ (quit
+ (message "Quit trying to open server")
+ nil))))
;; If this hasn't been opened before, we add it to the list.
(unless elem
(setq elem (list gnus-command-method nil)
gnus-opened-servers (cons elem gnus-opened-servers)))
;; Set the status of this server.
- (setcar (cdr elem) (if result 'ok 'denied))
+ (setcar (cdr elem)
+ (if result
+ (if (eq (cadr elem) 'offline)
+ 'offline
+ 'ok)
+ (if (and gnus-agent
+ (not (eq (cadr elem) 'offline))
+ (gnus-agent-method-p gnus-command-method))
+ (or gnus-server-unopen-status
+ (if (gnus-y-or-n-p
+ (format "Unable to open %s:%s, go offline? "
+ (car gnus-command-method)
+ (cadr gnus-command-method)))
+ 'offline
+ 'denied))
+ 'denied)))
;; Return the result from the "open" call.
- result))))
+ (cond ((eq (cadr elem) 'offline)
+ ;; I'm avoiding infinite recursion by binding unopen
+ ;; status to denied (The logic of this routine
+ ;; guarantees that I can't get to this point with
+ ;; unopen status already bound to denied).
+ (unless (eq gnus-server-unopen-status 'denied)
+ (let ((gnus-server-unopen-status 'denied))
+ (gnus-open-server gnus-command-method)))
+ t)
+ (t
+ result))))))
(defun gnus-close-server (gnus-command-method)
"Close the connection to GNUS-COMMAND-METHOD."
(defun gnus-server-opened (gnus-command-method)
"Check whether a connection to GNUS-COMMAND-METHOD has been opened."
- (when (stringp gnus-command-method)
- (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
- (funcall (inline (gnus-get-function gnus-command-method 'server-opened))
- (nth 1 gnus-command-method)))
+ (unless (eq (gnus-server-status gnus-command-method)
+ 'denied)
+ (when (stringp gnus-command-method)
+ (setq gnus-command-method (gnus-server-to-method gnus-command-method)))
+ (funcall (inline (gnus-get-function gnus-command-method 'server-opened))
+ (nth 1 gnus-command-method))))
(defun gnus-status-message (gnus-command-method)
"Return the status message from GNUS-COMMAND-METHOD.
-If GNUS-COMMAND-METHOD is a string, it is interpreted as a group name. The method
+If GNUS-COMMAND-METHOD is a string, it is interpreted as a group name. The method
this group uses will be queried."
(let ((gnus-command-method
(if (stringp gnus-command-method)
(funcall (gnus-get-function gnus-command-method func)
(gnus-group-real-name group) (nth 1 gnus-command-method)))))
+(defun gnus-request-group-articles (group)
+ "Request a list of existing articles in GROUP."
+ (let ((gnus-command-method (gnus-find-method-for-group group))
+ (func 'request-group-articles))
+ (when (gnus-check-backend-function func group)
+ (funcall (gnus-get-function gnus-command-method func)
+ (gnus-group-real-name group) (nth 1 gnus-command-method)))))
+
(defun gnus-close-group (group)
"Request the GROUP be closed."
(let ((gnus-command-method (inline (gnus-find-method-for-group group))))
"Request headers for ARTICLES in GROUP.
If FETCH-OLD, retrieve all headers (or some subset thereof) in the group."
(let ((gnus-command-method (gnus-find-method-for-group group)))
- (if (and gnus-use-cache (numberp (car articles)))
- (gnus-cache-retrieve-headers articles group fetch-old)
+ (cond
+ ((and gnus-use-cache (numberp (car articles)))
+ (gnus-cache-retrieve-headers articles group fetch-old))
+ ((and gnus-agent gnus-agent-cache (gnus-online gnus-command-method)
+ (gnus-agent-method-p gnus-command-method))
+ (gnus-agent-retrieve-headers articles group fetch-old))
+ (t
(funcall (gnus-get-function gnus-command-method 'retrieve-headers)
articles (gnus-group-real-name group)
- (nth 1 gnus-command-method) fetch-old))))
+ (nth 1 gnus-command-method) fetch-old)))))
(defun gnus-retrieve-articles (articles group)
"Request ARTICLES in GROUP."
(funcall (gnus-get-function gnus-command-method 'request-type)
(gnus-group-real-name group) article))))
+(defun gnus-request-set-mark (group action)
+ "Set marks on articles in the backend."
+ (let ((gnus-command-method (gnus-find-method-for-group group)))
+ (if (not (gnus-check-backend-function
+ 'request-set-mark (car gnus-command-method)))
+ action
+ (funcall (gnus-get-function gnus-command-method 'request-set-mark)
+ (gnus-group-real-name group) action
+ (nth 1 gnus-command-method)))))
+
(defun gnus-request-update-mark (group article mark)
- "Return the type (`post' or `mail') of GROUP (and ARTICLE)."
+ "Allow the backend to change the mark the user tries to put on an article."
(let ((gnus-command-method (gnus-find-method-for-group group)))
(if (not (gnus-check-backend-function
'request-update-mark (car gnus-command-method)))
(gnus-cache-request-article article group))
(setq res (cons group article)
clean-up t))
+ ;; Check the agent cache.
+ ((and gnus-agent gnus-agent-cache gnus-plugged
+ (numberp article)
+ (gnus-agent-request-article article group))
+ (setq res (cons group article)
+ clean-up t))
;; Use `head' function.
((fboundp head)
(setq res (funcall head article (gnus-group-real-name group)
(defun gnus-request-body (article group)
"Request the body of ARTICLE in GROUP."
- (let ((gnus-command-method (gnus-find-method-for-group group)))
- (funcall (gnus-get-function gnus-command-method 'request-body)
- article (gnus-group-real-name group)
- (nth 1 gnus-command-method))))
+ (let* ((gnus-command-method (gnus-find-method-for-group group))
+ (head (gnus-get-function gnus-command-method 'request-body t))
+ res clean-up)
+ (cond
+ ;; Check the cache.
+ ((and gnus-use-cache
+ (numberp article)
+ (gnus-cache-request-article article group))
+ (setq res (cons group article)
+ clean-up t))
+ ;; Check the agent cache.
+ ((and gnus-agent gnus-agent-cache gnus-plugged
+ (numberp article)
+ (gnus-agent-request-article article group))
+ (setq res (cons group article)
+ clean-up t))
+ ;; Use `head' function.
+ ((fboundp head)
+ (setq res (funcall head article (gnus-group-real-name group)
+ (nth 1 gnus-command-method))))
+ ;; Use `article' function.
+ (t
+ (setq res (gnus-request-article article group)
+ clean-up t)))
+ (when clean-up
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (goto-char (point-min))
+ (when (search-forward "\n\n" nil t)
+ (delete-region (point-min) (1- (point))))))
+ res))
(defun gnus-request-post (gnus-command-method)
"Post the current buffer using GNUS-COMMAND-METHOD."
(defun gnus-request-scan (group gnus-command-method)
"Request a SCAN being performed in GROUP from GNUS-COMMAND-METHOD.
If GROUP is nil, all groups on GNUS-COMMAND-METHOD are scanned."
- (when gnus-plugged
- (let ((gnus-command-method
- (if group (gnus-find-method-for-group group) gnus-command-method))
- (gnus-inhibit-demon t))
- (funcall (gnus-get-function gnus-command-method 'request-scan)
- (and group (gnus-group-real-name group))
- (nth 1 gnus-command-method)))))
+ (let ((gnus-command-method
+ (if group (gnus-find-method-for-group group) gnus-command-method))
+ (gnus-inhibit-demon t)
+ (mail-source-plugged gnus-plugged))
+ (if (or gnus-plugged (not (gnus-agent-method-p gnus-command-method)))
+ (progn
+ (setq gnus-internal-registry-spool-current-method gnus-command-method)
+ (funcall (gnus-get-function gnus-command-method 'request-scan)
+ (and group (gnus-group-real-name group))
+ (nth 1 gnus-command-method))))))
(defsubst gnus-request-update-info (info gnus-command-method)
"Request that GNUS-COMMAND-METHOD update INFO."
(setq gnus-command-method (gnus-server-to-method gnus-command-method)))
(when (gnus-check-backend-function
'request-update-info (car gnus-command-method))
- (funcall (gnus-get-function gnus-command-method 'request-update-info)
- (gnus-group-real-name (gnus-info-group info))
- info (nth 1 gnus-command-method))))
+ (let ((group (gnus-info-group info)))
+ (and (funcall (gnus-get-function gnus-command-method
+ 'request-update-info)
+ (gnus-group-real-name group)
+ info (nth 1 gnus-command-method))
+ ;; If the minimum article number is greater than 1, then all
+ ;; smaller article numbers are known not to exist; we'll
+ ;; artificially add those to the 'read range.
+ (let* ((active (gnus-active group))
+ (min (car active)))
+ (when (> min 1)
+ (let* ((range (if (= min 2) 1 (cons 1 (1- min))))
+ (read (gnus-info-read info))
+ (new-read (gnus-range-add read (list range))))
+ (gnus-info-set-read info new-read)))
+ info)))))
(defun gnus-request-expire-articles (articles group &optional force)
- (let ((gnus-command-method (gnus-find-method-for-group group)))
- (funcall (gnus-get-function gnus-command-method 'request-expire-articles)
- articles (gnus-group-real-name group) (nth 1 gnus-command-method)
- force)))
-
-(defun gnus-request-move-article
- (article group server accept-function &optional last)
- (let ((gnus-command-method (gnus-find-method-for-group group)))
- (funcall (gnus-get-function gnus-command-method 'request-move-article)
- article (gnus-group-real-name group)
- (nth 1 gnus-command-method) accept-function last)))
-
-(defun gnus-request-accept-article (group &optional gnus-command-method last)
+ (let* ((gnus-command-method (gnus-find-method-for-group group))
+ (not-deleted
+ (funcall
+ (gnus-get-function gnus-command-method 'request-expire-articles)
+ articles (gnus-group-real-name group) (nth 1 gnus-command-method)
+ force)))
+ (when (and gnus-agent gnus-agent-cache (gnus-agent-method-p gnus-command-method))
+ (let ((expired-articles (gnus-sorted-difference articles not-deleted)))
+ (when expired-articles
+ (gnus-agent-expire expired-articles group 'force))))
+ not-deleted))
+
+(defun gnus-request-move-article (article group server accept-function &optional last)
+ (let* ((gnus-command-method (gnus-find-method-for-group group))
+ (result (funcall (gnus-get-function gnus-command-method 'request-move-article)
+ article (gnus-group-real-name group)
+ (nth 1 gnus-command-method) accept-function last)))
+ (when (and result gnus-agent gnus-agent-cache (gnus-agent-method-p gnus-command-method))
+ (gnus-agent-expire (list article) group 'force))
+ result))
+
+(defun gnus-request-accept-article (group &optional gnus-command-method last
+ no-encode)
;; Make sure there's a newline at the end of the article.
(when (stringp gnus-command-method)
(setq gnus-command-method (gnus-server-to-method gnus-command-method)))
(goto-char (point-max))
(unless (bolp)
(insert "\n"))
- (let ((func (car (or gnus-command-method
- (gnus-find-method-for-group group)))))
- (funcall (intern (format "%s-request-accept-article" func))
+ (unless no-encode
+ (let ((message-options message-options))
+ (message-options-set-recipient)
+ (save-restriction
+ (message-narrow-to-head)
+ (let ((mail-parse-charset message-default-charset))
+ (mail-encode-encoded-word-buffer)))
+ (message-encode-message-body)))
+ (let ((gnus-command-method (or gnus-command-method
+ (gnus-find-method-for-group group))))
+ (funcall (gnus-get-function gnus-command-method 'request-accept-article)
(if (stringp group) (gnus-group-real-name group) group)
(cadr gnus-command-method)
last)))
-(defun gnus-request-replace-article (article group buffer)
+(defun gnus-request-replace-article (article group buffer &optional no-encode)
+ (unless no-encode
+ (let ((message-options message-options))
+ (message-options-set-recipient)
+ (save-restriction
+ (message-narrow-to-head)
+ (let ((mail-parse-charset message-default-charset))
+ (mail-encode-encoded-word-buffer)))
+ (message-encode-message-body)))
(let ((func (car (gnus-group-name-to-method group))))
(funcall (intern (format "%s-request-replace-article" func))
article (gnus-group-real-name group) buffer)))
projects / gnus / blobdiff