;;; nnvirtual.el --- virtual newsgroups access for Gnus
-;; Copyright (C) 1994,95,96,97,98 Free Software Foundation, Inc.
+;; Copyright (C) 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001
+;; Free Software Foundation, Inc.
;; Author: David Moore <dmoore@ucsd.edu>
;; Lars Magne Ingebrigtsen <larsi@gnus.org>
(require 'gnus-start)
(require 'gnus-sum)
(require 'gnus-msg)
-(require 'cl)
+(eval-when-compile (require 'cl))
(nnoo-declare nnvirtual)
(defvoo nnvirtual-always-rescan t
- "*If non-nil, always scan groups for unread articles when entering a group.
-If this variable is nil (which is the default) and you read articles
-in a component group after the virtual group has been activated, the
-read articles from the component group will show up when you enter the
-virtual group.")
+ "If non-nil, always scan groups for unread articles when entering a group.
+If this variable is nil and you read articles in a component group
+after the virtual group has been activated, the read articles from the
+component group will show up when you enter the virtual group.")
(defvoo nnvirtual-component-regexp nil
- "*Regexp to match component groups.")
+ "Regexp to match component groups.")
(defvoo nnvirtual-component-groups nil
"Component group in this nnvirtual group.")
(defvoo nnvirtual-current-group nil)
(defvoo nnvirtual-mapping-table nil
- "Table of rules on how to map between component group and article number
-to virtual article number.")
+ "Table of rules on how to map between component group and article number to virtual article number.")
(defvoo nnvirtual-mapping-offsets nil
"Table indexed by component group to an offset to be applied to article numbers in that group.")
(let ((gnus-use-cache t))
(setq result (gnus-retrieve-headers
articles cgroup nil))))
- (set-buffer nntp-server-buffer)
- ;; If we got HEAD headers, we convert them into NOV
- ;; headers. This is slow, inefficient and, come to think
- ;; of it, downright evil. So sue me. I couldn't be
- ;; bothered to write a header parse routine that could
- ;; parse a mixed HEAD/NOV buffer.
- (when (eq result 'headers)
- (nnvirtual-convert-headers))
- (goto-char (point-min))
- (while (not (eobp))
- (delete-region (point)
- (progn
- (setq carticle (read nntp-server-buffer))
- (point)))
-
- ;; We remove this article from the articles list, if
- ;; anything is left in the articles list after going through
- ;; the entire buffer, then those articles have been
- ;; expired or canceled, so we appropriately update the
- ;; component group below. They should be coming up
- ;; generally in order, so this shouldn't be slow.
- (setq articles (delq carticle articles))
-
- (setq article (nnvirtual-reverse-map-article cgroup carticle))
- (if (null article)
- ;; This line has no reverse mapping, that means it
- ;; was an extra article reference returned by nntp.
- (progn
- (beginning-of-line)
- (delete-region (point) (progn (forward-line 1) (point))))
- ;; Otherwise insert the virtual article number,
- ;; and clean up the xrefs.
- (princ article nntp-server-buffer)
- (nnvirtual-update-xref-header cgroup carticle
- prefix system-name)
- (forward-line 1))
- )
-
- (set-buffer vbuf)
- (goto-char (point-max))
- (insert-buffer-substring nntp-server-buffer))
+ (set-buffer nntp-server-buffer)
+ ;; If we got HEAD headers, we convert them into NOV
+ ;; headers. This is slow, inefficient and, come to think
+ ;; of it, downright evil. So sue me. I couldn't be
+ ;; bothered to write a header parse routine that could
+ ;; parse a mixed HEAD/NOV buffer.
+ (when (eq result 'headers)
+ (nnvirtual-convert-headers))
+ (goto-char (point-min))
+ (while (not (eobp))
+ (delete-region (point)
+ (progn
+ (setq carticle (read nntp-server-buffer))
+ (point)))
+
+ ;; We remove this article from the articles list, if
+ ;; anything is left in the articles list after going through
+ ;; the entire buffer, then those articles have been
+ ;; expired or canceled, so we appropriately update the
+ ;; component group below. They should be coming up
+ ;; generally in order, so this shouldn't be slow.
+ (setq articles (delq carticle articles))
+
+ (setq article (nnvirtual-reverse-map-article cgroup carticle))
+ (if (null article)
+ ;; This line has no reverse mapping, that means it
+ ;; was an extra article reference returned by nntp.
+ (progn
+ (beginning-of-line)
+ (delete-region (point) (progn (forward-line 1) (point))))
+ ;; Otherwise insert the virtual article number,
+ ;; and clean up the xrefs.
+ (princ article nntp-server-buffer)
+ (nnvirtual-update-xref-header cgroup carticle
+ prefix system-name)
+ (forward-line 1))
+ )
+
+ (set-buffer vbuf)
+ (goto-char (point-max))
+ (insert-buffer-substring nntp-server-buffer))
;; Anything left in articles is expired or canceled.
;; Could be smart and not tell it about articles already known?
(when articles
(save-excursion
(when buffer
(set-buffer buffer))
- (let ((method (gnus-find-method-for-group
- nnvirtual-last-accessed-component-group)))
+ (let* ((gnus-override-method nil)
+ (method (gnus-find-method-for-group
+ nnvirtual-last-accessed-component-group)))
(funcall (gnus-get-function method 'request-article)
article nil (nth 1 method) buffer)))))
;; This is a fetch by number.
(if buffer
(save-excursion
(set-buffer buffer)
- (gnus-request-article-this-buffer (cdr amap) cgroup))
+ ;; We bind this here to avoid double decoding.
+ (let ((gnus-article-decode-hook nil))
+ (gnus-request-article-this-buffer (cdr amap) cgroup)))
(gnus-request-article (cdr amap) cgroup))))))))
(deffoo nnvirtual-request-update-mark (group article mark)
(let* ((nart (nnvirtual-map-article article))
- (cgroup (car nart))
- ;; The component group might be a virtual group.
- (nmark (gnus-request-update-mark cgroup (cdr nart) mark)))
+ (cgroup (car nart)))
(when (and nart
- (= mark nmark)
+ (memq mark gnus-auto-expirable-marks)
+ ;; The component group might be a virtual group.
+ (= mark (gnus-request-update-mark cgroup (cdr nart) mark))
(gnus-group-auto-expirable-p cgroup))
(setq mark gnus-expirable-mark)))
mark)
(cdr gnus-message-group-art)))))
(gnus-request-post (gnus-find-method-for-group group)))))
+
+(deffoo nnvirtual-request-expire-articles (articles group
+ &optional server force)
+ (nnvirtual-possibly-change-server server)
+ (setq nnvirtual-component-groups
+ (delete (nnvirtual-current-group) nnvirtual-component-groups))
+ (let (unexpired)
+ (dolist (group nnvirtual-component-groups)
+ (setq unexpired (nconc unexpired
+ (mapcar
+ #'(lambda (article)
+ (nnvirtual-reverse-map-article
+ group article))
+ (gnus-uncompress-range
+ (gnus-group-expire-articles-1 group))))))
+ (sort (delq nil unexpired) '<)))
+
\f
;;; Internal functions.
;; hits C-g, you won't leave the component groups in a half-way state.
(progn
;; move (un)read
- (let ((gnus-newsgroup-active nil)) ;workaround guns-update-read-articles
+ ;; bind for workaround guns-update-read-articles
+ (let ((gnus-newsgroup-active nil))
(while (setq entry (pop unreads))
(gnus-update-read-articles (car entry) (cdr entry))))
;;; We map between virtual articles and real articles in a manner
-;;; which keeps the size of the virtual active list the same as
-;;; the sum of the component active lists.
-;;; To achieve fair mixing of the groups, the last article in
-;;; each of N component groups will be in the the last N articles
-;;; in the virtual group.
-
-;;; If you have 3 components A, B and C, with articles 1-8, 1-5, and 6-7
-;;; resprectively, then the virtual article numbers look like:
+;;; which keeps the size of the virtual active list the same as the
+;;; sum of the component active lists.
+
+;;; To achieve fair mixing of the groups, the last article in each of
+;;; N component groups will be in the last N articles in the virtual
+;;; group.
+
+;;; If you have 3 components A, B and C, with articles 1-8, 1-5, and
+;;; 6-7 resprectively, then the virtual article numbers look like:
;;;
;;; 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
;;; A1 A2 A3 A4 B1 A5 B2 A6 B3 A7 B4 C6 A8 B5 C7
(aref entry 1)
(cdr (aref nnvirtual-mapping-offsets group-pos)))
))
- ))
+ ))
"Return an association list of component article numbers.
These are indexed by elements of nnvirtual-component-groups, based on
the sequence ARTICLES of virtual article numbers. ARTICLES should be
-sorted, and can be a compressed sequence. If any of the article
+sorted, and can be a compressed sequence. If any of the article
numbers has no corresponding component article, then it is left out of
the result."
(when (numberp (cdr-safe articles))
;; Into all-unreads we put (g unreads).
;; Into all-marks we put (g marks).
;; We also increment cnt and tot here, and compute M (max of sizes).
- (mapc (lambda (g)
- (setq active (gnus-activate-group g)
- min (car active)
- max (cdr active))
- (when (and active (>= max min) (not (zerop max)))
- ;; store active information
- (push (list g (- max min -1) max) actives)
- ;; collect unread/mark info for later
- (setq unreads (gnus-list-of-unread-articles g))
- (setq marks (gnus-info-marks (gnus-get-info g)))
- (when gnus-use-cache
- (push (cons 'cache
- (gnus-cache-articles-in-group g))
- marks))
- (push (cons g unreads) all-unreads)
- (push (cons g marks) all-marks)
- ;; count groups, total #articles, and max size
- (setq size (- max min -1))
- (setq cnt (1+ cnt)
- tot (+ tot size)
- M (max M size))))
- nnvirtual-component-groups)
+ (mapcar (lambda (g)
+ (setq active (gnus-activate-group g)
+ min (car active)
+ max (cdr active))
+ (when (and active (>= max min) (not (zerop max)))
+ ;; store active information
+ (push (list g (- max min -1) max) actives)
+ ;; collect unread/mark info for later
+ (setq unreads (gnus-list-of-unread-articles g))
+ (setq marks (gnus-info-marks (gnus-get-info g)))
+ (when gnus-use-cache
+ (push (cons 'cache
+ (gnus-cache-articles-in-group g))
+ marks))
+ (push (cons g unreads) all-unreads)
+ (push (cons g marks) all-marks)
+ ;; count groups, total #articles, and max size
+ (setq size (- max min -1))
+ (setq cnt (1+ cnt)
+ tot (+ tot size)
+ M (max M size))))
+ nnvirtual-component-groups)
;; Number of articles in the virtual group.
(setq nnvirtual-mapping-len tot)
projects / elisp / gnus.git- / blobdiff