X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=lisp%2Fgnus-cache.el;h=a0763f37c9958b1a213c49503498484a15d68229;hb=ebdecdf203f300217a9a7f533dcf43fec5d427b4;hp=56d16b153d5a0fec10a98d395ab4f1fe7c8467c4;hpb=3744aa624a1af97f360196755fdeeb6382da8aca;p=elisp%2Fgnus.git- diff --git a/lisp/gnus-cache.el b/lisp/gnus-cache.el index 56d16b1..a0763f3 100644 --- a/lisp/gnus-cache.el +++ b/lisp/gnus-cache.el @@ -1,5 +1,6 @@ ;;; gnus-cache.el --- cache interface for Gnus -;; Copyright (C) 1995,96,97,98 Free Software Foundation, Inc. +;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 +;; Free Software Foundation, Inc. ;; Author: Lars Magne Ingebrigtsen ;; Keywords: news @@ -35,7 +36,7 @@ (require 'gnus-sum)) (defcustom gnus-cache-active-file - (concat (file-name-as-directory gnus-cache-directory) "active") + (expand-file-name "active" gnus-cache-directory) "*The cache active file." :group 'gnus-cache :type 'file) @@ -60,7 +61,7 @@ If a group matches both gnus-cacheable-groups and gnus-uncacheable-groups it's not cached." :group 'gnus-cache :type '(choice (const :tag "off" nil) - regexp)) + regexp)) (defcustom gnus-uncacheable-groups nil "*Groups that match this regexp will not be cached. @@ -77,6 +78,9 @@ it's not cached." (defvar gnus-cache-overview-coding-system 'raw-text "Coding system used on Gnus cache files.") +(defvar gnus-cache-coding-system 'raw-text + "Coding system used on Gnus cache files.") + ;;; Internal variables. @@ -142,28 +146,21 @@ it's not cached." (setq gnus-cache-buffer nil)))) (defun gnus-cache-possibly-enter-article - (group article headers ticked dormant unread &optional force) + (group article ticked dormant unread &optional force) (when (and (or force (not (eq gnus-use-cache 'passive))) (numberp article) - (> article 0) - (vectorp headers)) ; This might be a dummy article. - ;; If this is a virtual group, we find the real group. - (when (gnus-virtual-group-p group) - (let ((result (nnvirtual-find-group-art - (gnus-group-real-name group) article))) - (setq group (car result) - headers (copy-sequence headers)) - (mail-header-set-number headers (cdr result)))) - (let ((number (mail-header-number headers)) - file) + (> article 0)) ; This might be a dummy article. + (let ((number article) file headers) + ;; If this is a virtual group, we find the real group. + (when (gnus-virtual-group-p group) + (let ((result (nnvirtual-find-group-art + (gnus-group-real-name group) article))) + (setq group (car result) + number (cdr result)))) (when (and number (> number 0) ; Reffed article. (or force - (and (or (not gnus-cacheable-groups) - (string-match gnus-cacheable-groups group)) - (or (not gnus-uncacheable-groups) - (not (string-match - gnus-uncacheable-groups group))) + (and (gnus-cache-fully-p group) (gnus-cache-member-of-class gnus-cache-enter-articles ticked dormant unread))) (not (file-exists-p (setq file (gnus-cache-file-name @@ -175,11 +172,16 @@ it's not cached." t ; The article already is saved. (save-excursion (set-buffer nntp-server-buffer) + (require 'gnus-art) (let ((gnus-use-cache nil) (gnus-article-decode-hook nil)) (gnus-request-article-this-buffer number group)) (when (> (buffer-size) 0) - (gnus-write-buffer file) + (let ((coding-system-for-write gnus-cache-coding-system)) + (gnus-write-buffer file)) + (nnheader-remove-body) + (setq headers (nnheader-parse-naked-head)) + (mail-header-set-number headers number) (gnus-cache-change-buffer group) (set-buffer (cdr gnus-cache-buffer)) (goto-char (point-max)) @@ -204,8 +206,9 @@ it's not cached." (nnheader-insert-nov headers) ;; Update the active info. (set-buffer gnus-summary-buffer) - (gnus-cache-update-active group number) - (push article gnus-newsgroup-cached) + (gnus-cache-possibly-update-active group (cons number number)) + (setq gnus-newsgroup-cached + (gnus-add-to-sorted-list gnus-newsgroup-cached article)) (gnus-summary-update-secondary-mark article)) t)))))) @@ -230,7 +233,7 @@ it's not cached." (defun gnus-cache-possibly-remove-articles-1 () "Possibly remove some of the removable articles." - (unless (eq gnus-use-cache 'passive) + (when (gnus-cache-fully-p gnus-newsgroup-name) (let ((articles gnus-cache-removable-articles) (cache-articles gnus-newsgroup-cached) article) @@ -255,7 +258,8 @@ it's not cached." (when (file-exists-p file) (erase-buffer) (gnus-kill-all-overlays) - (insert-file-contents file) + (let ((coding-system-for-read gnus-cache-coding-system)) + (insert-file-contents file)) t))) (defun gnus-cache-possibly-alter-active (group active) @@ -277,9 +281,7 @@ it's not cached." ;; the normal way. (let ((gnus-use-cache nil)) (gnus-retrieve-headers articles group fetch-old)) - (let ((uncached-articles (gnus-sorted-intersection - (gnus-sorted-complement articles cached) - articles)) + (let ((uncached-articles (gnus-sorted-difference articles cached)) (cache-file (gnus-cache-file-name group ".overview")) type) ;; We first retrieve all the headers that we don't have in @@ -301,7 +303,9 @@ it's not cached." ;; unsuccessful), so we use the cached headers exclusively. (set-buffer nntp-server-buffer) (erase-buffer) - (insert-file-contents cache-file) + (let ((coding-system-for-read + gnus-cache-overview-coding-system)) + (insert-file-contents cache-file)) 'nov) ((eq type 'nov) ;; We have both cached and uncached NOV headers, so we @@ -326,7 +330,6 @@ Returns the list of articles entered." (if (natnump article) (when (gnus-cache-possibly-enter-article gnus-newsgroup-name article - (gnus-summary-article-header article) nil nil nil t) (push article out)) (gnus-message 2 "Can't cache article %d" article)) @@ -335,7 +338,7 @@ Returns the list of articles entered." (gnus-summary-position-point) (nreverse out))) -(defun gnus-cache-remove-article (n) +(defun gnus-cache-remove-article (&optional n) "Remove the next N articles from the cache. If not given a prefix, use the process marked articles instead. Returns the list of articles removed." @@ -360,15 +363,20 @@ Returns the list of articles removed." (defun gnus-summary-insert-cached-articles () "Insert all the articles cached for this group into the current buffer." (interactive) - (let ((cached (sort (copy-sequence gnus-newsgroup-cached) '<)) - (gnus-verbose (max 6 gnus-verbose))) - (unless cached - (gnus-message 3 "No cached articles for this group")) - (while cached - (gnus-summary-goto-subject (pop cached) t)))) + (let ((gnus-verbose (max 6 gnus-verbose))) + (if (not gnus-newsgroup-cached) + (gnus-message 3 "No cached articles for this group") + (gnus-summary-goto-subjects gnus-newsgroup-cached)))) -(defalias 'gnus-summary-limit-include-cached - 'gnus-summary-insert-cached-articles) +(defun gnus-summary-limit-include-cached () + "Limit the summary buffer to articles that are cached." + (interactive) + (let ((gnus-verbose (max 6 gnus-verbose))) + (if gnus-newsgroup-cached + (progn + (gnus-summary-limit gnus-newsgroup-cached) + (gnus-summary-position-point)) + (gnus-message 3 "No cached articles for this group")))) ;;; Internal functions. @@ -403,26 +411,31 @@ Returns the list of articles removed." (and (not unread) (not ticked) (not dormant) (memq 'read class)))) (defun gnus-cache-file-name (group article) - (concat (file-name-as-directory gnus-cache-directory) - (file-name-as-directory - (nnheader-translate-file-chars - (if (gnus-use-long-file-name 'not-cache) - group - (let ((group (nnheader-replace-chars-in-string group ?/ ?_))) - ;; Translate the first colon into a slash. - (when (string-match ":" group) - (aset group (match-beginning 0) ?/)) - (nnheader-replace-chars-in-string group ?. ?/))) - t)) - (if (stringp article) article (int-to-string article)))) + (expand-file-name + (if (stringp article) article (int-to-string article)) + (file-name-as-directory + (expand-file-name + (nnheader-translate-file-chars + (if (gnus-use-long-file-name 'not-cache) + group + (let ((group (nnheader-replace-duplicate-chars-in-string + (nnheader-replace-chars-in-string group ?/ ?_) + ?. ?_))) + ;; Translate the first colon into a slash. + (when (string-match ":" group) + (setq group (concat (substring group 0 (match-beginning 0)) + "/" (substring group (match-end 0))))) + (nnheader-replace-chars-in-string group ?. ?/))) + t) + gnus-cache-directory)))) (defun gnus-cache-update-article (group article) "If ARTICLE is in the cache, remove it and re-enter it." (gnus-cache-change-buffer group) - (when (gnus-cache-possibly-remove-article article nil nil nil t) + (when (gnus-cache-possibly-remove-article article nil nil nil t) (let ((gnus-use-cache nil)) (gnus-cache-possibly-enter-article - gnus-newsgroup-name article (gnus-summary-article-header article) + gnus-newsgroup-name article nil nil nil t)))) (defun gnus-cache-possibly-remove-article (article ticked dormant unread @@ -451,8 +464,10 @@ Returns the list of articles removed." (point-max) t)) (delete-region (progn (beginning-of-line) (point)) (progn (forward-line 1) (point))))) - (setq gnus-newsgroup-cached - (delq article gnus-newsgroup-cached)) + (unless (setq gnus-newsgroup-cached + (delq article gnus-newsgroup-cached)) + (gnus-sethash gnus-newsgroup-name nil gnus-cache-active-hashtb) + (setq gnus-cache-active-altered t)) (gnus-summary-update-secondary-mark article) t))) @@ -466,9 +481,13 @@ Returns the list of articles removed." (directory-files dir nil "^[0-9]+$" t)) '<)) ;; Update the cache active file, just to synch more. - (when articles - (gnus-cache-update-active group (car articles) t) - (gnus-cache-update-active group (car (last articles)))) + (if articles + (progn + (gnus-cache-update-active group (car articles) t) + (gnus-cache-update-active group (car (last articles)))) + (when (gnus-gethash group gnus-cache-active-hashtb) + (gnus-sethash group nil gnus-cache-active-hashtb) + (setq gnus-cache-active-altered t))) articles))) (defun gnus-cache-braid-nov (group cached &optional file) @@ -478,7 +497,10 @@ Returns the list of articles removed." (save-excursion (set-buffer cache-buf) (erase-buffer) - (insert-file-contents (or file (gnus-cache-file-name group ".overview"))) + (let ((coding-system-for-read + gnus-cache-overview-coding-system)) + (insert-file-contents + (or file (gnus-cache-file-name group ".overview")))) (goto-char (point-min)) (insert "\n") (goto-char (point-min))) @@ -489,13 +511,13 @@ Returns the list of articles removed." (< (read (current-buffer)) (car cached))) (forward-line 1)) (beginning-of-line) - (save-excursion - (set-buffer cache-buf) - (if (search-forward (concat "\n" (int-to-string (car cached)) "\t") - nil t) - (setq beg (progn (beginning-of-line) (point)) - end (progn (end-of-line) (point))) - (setq beg nil))) + (set-buffer cache-buf) + (if (search-forward (concat "\n" (int-to-string (car cached)) "\t") + nil t) + (setq beg (progn (beginning-of-line) (point)) + end (progn (end-of-line) (point))) + (setq beg nil)) + (set-buffer nntp-server-buffer) (when beg (insert-buffer-substring cache-buf beg end) (insert "\n")) @@ -517,18 +539,20 @@ Returns the list of articles removed." (car cached))) (search-forward "\n.\n" nil 'move)) (beginning-of-line) - (save-excursion - (set-buffer cache-buf) - (erase-buffer) - (insert-file-contents (gnus-cache-file-name group (car cached))) - (goto-char (point-min)) - (insert "220 ") - (princ (car cached) (current-buffer)) - (insert " Article retrieved.\n") - (search-forward "\n\n" nil 'move) - (delete-region (point) (point-max)) - (forward-char -1) - (insert ".")) + (set-buffer cache-buf) + (erase-buffer) + (let ((coding-system-for-read + gnus-cache-coding-system)) + (insert-file-contents (gnus-cache-file-name group (car cached)))) + (goto-char (point-min)) + (insert "220 ") + (princ (car cached) (current-buffer)) + (insert " Article retrieved.\n") + (search-forward "\n\n" nil 'move) + (delete-region (point) (point-max)) + (forward-char -1) + (insert ".") + (set-buffer nntp-server-buffer) (insert-buffer-substring cache-buf) (setq cached (cdr cached))) (kill-buffer cache-buf))) @@ -543,6 +567,7 @@ $ emacs -batch -l ~/.emacs -l gnus -f gnus-jog-cache" (let ((gnus-mark-article-hook nil) (gnus-expert-user t) (nnmail-spool-file nil) + (mail-sources nil) (gnus-use-dribble-file nil) (gnus-novice-user nil) (gnus-large-newsgroup nil)) @@ -564,14 +589,14 @@ $ emacs -batch -l ~/.emacs -l gnus -f gnus-jog-cache" "Read the cache active file." (gnus-make-directory gnus-cache-directory) (if (or (not (file-exists-p gnus-cache-active-file)) - (not (zerop (nth 7 (file-attributes gnus-cache-active-file)))) + (zerop (nth 7 (file-attributes gnus-cache-active-file))) force) ;; There is no active file, so we generate one. (gnus-cache-generate-active) ;; We simply read the active file. (save-excursion (gnus-set-work-buffer) - (insert-file-contents gnus-cache-active-file) + (nnheader-insert-file-contents gnus-cache-active-file) (gnus-active-to-gnus-format nil (setq gnus-cache-active-hashtb (gnus-make-hashtable @@ -583,17 +608,28 @@ $ emacs -batch -l ~/.emacs -l gnus -f gnus-jog-cache" (when (or force (and gnus-cache-active-hashtb gnus-cache-active-altered)) - (with-temp-file gnus-cache-active-file - (mapatoms - (lambda (sym) - (when (and sym (boundp sym)) - (insert (format "%s %d %d y\n" - (symbol-name sym) (cdr (symbol-value sym)) - (car (symbol-value sym)))))) - gnus-cache-active-hashtb)) + (gnus-write-active-file gnus-cache-active-file gnus-cache-active-hashtb t) ;; Mark the active hashtb as unaltered. (setq gnus-cache-active-altered nil))) +(defun gnus-cache-possibly-update-active (group active) + "Update active info bounds of GROUP with ACTIVE if necessary. +The update is performed if ACTIVE contains a higher or lower bound +than the current." + (let ((lower t) (higher t)) + (if gnus-cache-active-hashtb + (let ((cache-active (gnus-gethash group gnus-cache-active-hashtb))) + (when cache-active + (unless (< (car active) (car cache-active)) + (setq lower nil)) + (unless (> (cdr active) (cdr cache-active)) + (setq higher nil)))) + (gnus-cache-read-active)) + (when lower + (gnus-cache-update-active group (car active) t)) + (when higher + (gnus-cache-update-active group (cdr active))))) + (defun gnus-cache-update-active (group number &optional low) "Update the upper bound of the active info of GROUP to NUMBER. If LOW, update the lower bound instead." @@ -644,7 +680,7 @@ If LOW, update the lower bound instead." ;; Go through all the other files. (while alphs (when (and (file-directory-p (car alphs)) - (not (string-match "^\\.\\.?$" + (not (string-match "^\\." (file-name-nondirectory (car alphs))))) ;; We descend directories. (gnus-cache-generate-active (car alphs))) @@ -660,13 +696,27 @@ If LOW, update the lower bound instead." (interactive (list gnus-cache-directory)) (gnus-cache-close) (let ((nnml-generate-active-function 'identity)) - (nnml-generate-nov-databases-1 dir))) + (nnml-generate-nov-databases-1 dir)) + (gnus-cache-open)) (defun gnus-cache-move-cache (dir) "Move the cache tree to somewhere else." (interactive "FMove the cache tree to: ") (rename-file gnus-cache-directory dir)) +(defun gnus-cache-fully-p (&optional group) + "Returns non-nil if the cache should be fully used. +If GROUP is non-nil, also cater to `gnus-cacheable-groups' and +`gnus-uncacheable-groups'." + (and gnus-use-cache + (not (eq gnus-use-cache 'passive)) + (if (null group) + t + (and (or (not gnus-cacheable-groups) + (string-match gnus-cacheable-groups group)) + (or (not gnus-uncacheable-groups) + (not (string-match gnus-uncacheable-groups group))))))) + (provide 'gnus-cache) ;;; gnus-cache.el ends here