;;; gnus-agent.el --- unplugged support for Gnus
-;; Copyright (C) 1997,98,99 Free Software Foundation, Inc.
+;; Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; This file is part of GNU Emacs.
(require 'gnus-cache)
(require 'nnvirtual)
(require 'gnus-sum)
+(require 'gnus-score)
(eval-when-compile
- (require 'cl)
- (require 'gnus-score))
+ (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 'hook)
+(defcustom gnus-agent-confirmation-function 'y-or-n-p
+ "Function to confirm when error happens."
+ :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."
+ :type '(choice (const :tag "Always" t)
+ (const :tag "Never" nil)
+ (const :tag "Ask" ask))
+ :group 'gnus-agent)
+
;;; Internal variables
(defvar gnus-agent-history-buffers nil)
(defvar gnus-agent-send-mail-function nil)
(defvar gnus-agent-file-coding-system 'raw-text)
-(defconst gnus-agent-scoreable-headers
- '("subject" "from" "date" "message-id" "references" "chars" "lines" "xref")
- "Headers that are considered when scoring articles for download via the Agent.")
-
;; Dynamic variables
(defvar gnus-headers)
(defvar gnus-score)
(defmacro gnus-agent-with-fetch (&rest forms)
"Do FORMS safely."
`(unwind-protect
- (progn
+ (let ((gnus-agent-fetching t))
(gnus-agent-start-fetch)
,@forms)
(gnus-agent-stop-fetch)))
"Jc" gnus-enter-category-buffer
"Jj" gnus-agent-toggle-plugged
"Js" gnus-agent-fetch-session
- "JY" gnus-agent-synchronize
+ "JY" gnus-agent-synchronize-flags
"JS" gnus-group-send-drafts
"Ja" gnus-agent-add-group
"Jr" gnus-agent-remove-group)
(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)
(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)))
+
;;;
;;; Group mode commands
;;;
(setf (cadddr c) (delete group (cadddr c))))))
(gnus-category-write)))
-(defun gnus-agent-synchronize ()
- "Synchronize local, unplugged, data with backend.
-Currently sends flag setting requests, if any."
+(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"))
- (set-buffer (get-buffer-create " *Gnus Agent flag synchronize*"))
- (erase-buffer)
- (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"))))
- (write-file (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)))
;;;
;;; Server mode commands
(defun gnus-agent-write-servers ()
"Write the alist of covered servers."
(gnus-make-directory (nnheader-concat gnus-agent-directory "lib"))
- (with-temp-file (nnheader-concat gnus-agent-directory "lib/servers")
- (prin1 gnus-agent-covered-methods (current-buffer))))
+ (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)))))
;;;
;;; Summary commands
(funcall function nil new)
(gnus-agent-write-active file new)
(erase-buffer)
- (insert-file-contents-literally file))))
+ (nnheader-insert-file-contents file))))
(defun gnus-agent-write-active (file new)
(let ((orig (gnus-make-hashtable (count-lines (point-min) (point-max))))
elem osym)
(when (file-exists-p file)
(with-temp-buffer
- (insert-file-contents file)
+ (nnheader-insert-file-contents file)
(gnus-active-to-gnus-format nil orig))
(mapatoms
(lambda (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))))
+ ;; The hashtable contains real names of groups, no more prefix
+ ;; removing, so set `full' to `t'.
+ (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)
- (file (gnus-agent-lib-file "active")))
+ (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
+ ;; Emacs got problem to match non-ASCII group in multibyte buffer.
+ (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)
- (car active)))
+ (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))))))
(format " *Gnus agent %s history*"
(gnus-agent-method)))))
gnus-agent-history-buffers)
+ (mm-disable-multibyte) ;; everything is binary
(erase-buffer)
(insert "\n")
(let ((file (gnus-agent-lib-file "history")))
(when (file-exists-p file)
- (insert-file 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)
(goto-char (point-max))
- (insert id "\t" (number-to-string date) "\t")
- (while group-arts
- (insert (caar group-arts) " " (number-to-string (cdr (pop group-arts)))
- " "))
- (insert "\n")))
+ (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
(with-temp-buffer
(let (article)
(while (setq article (pop articles))
- (when (gnus-request-article article group)
+ (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)))
(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)))
- ;; add article with marks to list of article headers we want to fetch
+ ;; Add article with marks to list of article headers we want to fetch.
(dolist (arts (gnus-info-marks (gnus-get-info group)))
- (setq articles (union (gnus-uncompress-sequence (cdr arts))
+ (setq articles (gnus-agent-union (gnus-uncompress-sequence (cdr arts))
articles)))
(setq articles (sort articles '<))
- ;; remove known articles
+ ;; Remove known articles.
(when (gnus-agent-load-alist group)
(setq articles (gnus-sorted-intersection
articles
(cdr (gnus-active group)))))))
;; Fetch them.
(gnus-make-directory (nnheader-translate-file-chars
- (file-name-directory file)))
+ (file-name-directory file) t))
(when articles
(gnus-message 7 "Fetching headers for %s..." group)
(save-excursion
(defun gnus-agent-save-alist (group &optional articles state dir)
"Save the article-state alist for GROUP."
- (with-temp-file (if dir
- (concat dir ".agentview")
- (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")))
+ (let ((file-name-coding-system nnmail-pathname-coding-system))
+ (with-temp-file (if dir
+ (concat dir ".agentview")
+ (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)
(concat (gnus-agent-directory) (gnus-agent-group-path group) "/"
(if (stringp article) article (string-to-number article))))
+(defun gnus-agent-batch-confirmation (msg)
+ "Show error message and return t."
+ (gnus-message 1 msg)
+ t)
+
;;;###autoload
(defun gnus-agent-batch-fetch ()
"Start Gnus and fetch session."
(interactive)
(gnus)
- (gnus-agent-fetch-session)
+ (let ((gnus-agent-confirmation-function 'gnus-agent-batch-confirmation))
+ (gnus-agent-fetch-session))
(gnus-group-exit))
(defun gnus-agent-fetch-session ()
groups group gnus-command-method)
(save-excursion
(while methods
- (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)))))
+ (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"))))
gnus-newsgroup-dependencies gnus-newsgroup-headers
gnus-newsgroup-scored gnus-headers gnus-score
gnus-use-cache articles arts
- category predicate info marks score-param)
+ 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)
+ ;; Maybe some other gnus-summary local variables should also
+ ;; be put here.
+ )
(unless (gnus-check-group group)
(error "Can't open server for %s" group))
;; Fetch headers.
(when (and (or (gnus-active group) (gnus-activate-group group))
(setq articles (gnus-agent-fetch-headers group))
- (progn
+ (let ((nntp-server-buffer gnus-agent-overview-buffer))
;; Parse them and see which articles we want to fetch.
(setq gnus-newsgroup-dependencies
(make-vector (length articles) 0))
- ;; No need to call `gnus-get-newsgroup-headers-xover' with
- ;; the entire .overview for group as we still have the just
- ;; downloaded headers in `gnus-agent-overview-buffer'.
- (let ((nntp-server-buffer gnus-agent-overview-buffer))
- (setq gnus-newsgroup-headers
- (gnus-get-newsgroup-headers-xover articles nil nil
- group)))
+ (setq gnus-newsgroup-headers
+ (gnus-get-newsgroup-headers-xover articles nil nil
+ group))
;; `gnus-agent-overview-buffer' may be killed for
;; timeout reason. If so, recreate it.
(gnus-agent-create-buffer)))
(gnus-get-predicate
(or (gnus-group-find-parameter group 'agent-predicate t)
(cadr category))))
- ;; Do we want to download everything, or nothing?
- (if (or (eq (caaddr predicate) 'gnus-agent-true)
- (eq (caaddr predicate) 'gnus-agent-false))
- ;; Yes.
- (setq arts (symbol-value
- (cadr (assoc (caaddr predicate)
- '((gnus-agent-true articles)
- (gnus-agent-false nil))))))
- ;; No, we need to decide what we want.
+ (if (memq (caaddr predicate) '(gnus-agent-true gnus-agent-false))
+ ;; Simple implementation
+ (setq arts
+ (and (eq (caaddr predicate) 'gnus-agent-true) articles))
+ (setq arts nil)
(setq score-param
- (let ((score-method
- (or
- (gnus-group-find-parameter group 'agent-score t)
- (caddr category))))
- (when score-method
- (require 'gnus-score)
- (if (eq score-method 'file)
- (let ((entries
- (gnus-score-load-files
- (gnus-all-score-files group)))
- list score-file)
- (while (setq list (car entries))
- (push (car list) score-file)
- (setq list (cdr list))
- (while list
- (when (member (caar list)
- gnus-agent-scoreable-headers)
- (push (car list) score-file))
- (setq list (cdr list)))
- (setq score-param
- (append score-param (list (nreverse score-file)))
- score-file nil entries (cdr entries)))
- (list score-param))
- (if (stringp (car score-method))
- score-method
- (list (list score-method)))))))
+ (or (gnus-group-get-parameter group 'agent-score t)
+ (caddr category)))
+ ;; Translate score-param into real one
+ (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))
- (setq arts nil)
(while (setq gnus-headers (pop gnus-newsgroup-headers))
(setq gnus-score
(or (cdr (assq (mail-header-number gnus-headers)
(gnus-edit-form
(cadr info) (format "Editing the predicate for category %s" category)
`(lambda (predicate)
- (setf (cadr (assq ',category gnus-category-alist)) predicate)
+ (setcar (cdr (assq ',category gnus-category-alist)) predicate)
(gnus-category-write)
(gnus-category-list)))))
(caddr info)
(format "Editing the score expression for category %s" category)
`(lambda (groups)
- (setf (caddr (assq ',category gnus-category-alist)) groups)
+ (setcar (cddr (assq ',category gnus-category-alist)) groups)
(gnus-category-write)
(gnus-category-list)))))
(gnus-edit-form
(cadddr info) (format "Editing the group list for category %s" category)
`(lambda (groups)
- (setf (cadddr (assq ',category gnus-category-alist)) groups)
+ (setcar (nthcdr 3 (assq ',category gnus-category-alist)) groups)
(gnus-category-write)
(gnus-category-list)))))
(let ((info (assq category gnus-category-alist))
(buffer-read-only nil))
(gnus-delete-line)
- (gnus-category-write)
- (setq gnus-category-alist (delq info gnus-category-alist))))
+ (setq gnus-category-alist (delq info gnus-category-alist))
+ (gnus-category-write)))
(defun gnus-category-copy (category to)
"Copy the current category."
(while (setq gnus-command-method (pop methods))
(when (file-exists-p (gnus-agent-lib-file "active"))
(with-temp-buffer
- (insert-file-contents (gnus-agent-lib-file "active"))
+ (nnheader-insert-file-contents (gnus-agent-lib-file "active"))
(gnus-active-to-gnus-format
gnus-command-method
(setq orig (gnus-make-hashtable
(forward-line 1)
;; Old article. Schedule it for possible nuking.
(while (not (eolp))
- (setq sym (let ((obarray expiry-hashtb))
- (read (current-buffer))))
+ (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)))
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