X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=lisp%2Fgnus-cache.el;h=571d17c3336323a04c4f74fbab0d39383e0bd405;hb=85be3726901ca453647897e26330fee8aa25d8c0;hp=8fc0e93e415d659b002f5e0b6aa4c7185d833724;hpb=49d38b41c190eaab2cb34294fac7302a9c9ea353;p=elisp%2Fgnus.git-

diff --git a/lisp/gnus-cache.el b/lisp/gnus-cache.el
index 8fc0e93..571d17c 100644
--- a/lisp/gnus-cache.el
+++ b/lisp/gnus-cache.el
@@ -1,6 +1,7 @@
 ;;; gnus-cache.el --- cache interface for Gnus
-;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003
-;;        Free Software Foundation, Inc.
+
+;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003,
+;;   2004, 2005 Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;;         Tatsuya Ichikawa <t-ichi@po.shiojiri.ne.jp>
@@ -21,22 +22,18 @@
 
 ;; You should have received a copy of the GNU General Public License
 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
 
 ;;; Commentary:
 
 ;;; Code:
 
 (eval-when-compile (require 'cl))
-(eval-when-compile (require 'gnus-clfns))
 
 (require 'gnus)
-(require 'gnus-int)
-(require 'gnus-range)
-(require 'gnus-start)
 (eval-when-compile
-  (if (not (fboundp 'gnus-agent-load-alist))
+  (unless (fboundp 'gnus-agent-load-alist)
       (defun gnus-agent-load-alist (group)))
   (require 'gnus-sum))
 
@@ -94,6 +91,7 @@ it's not cached."
 (defvar gnus-cache-buffer nil)
 (defvar gnus-cache-active-hashtb nil)
 (defvar gnus-cache-active-altered nil)
+(defvar gnus-cache-total-fetched-hashtb nil)
 (defvar gnus-cache-write-file-coding-system 'raw-text)
 
 (eval-and-compile
@@ -129,9 +127,8 @@ it's not cached."
 	  (overview-file (gnus-cache-file-name
 			  (car gnus-cache-buffer) ".overview")))
       ;; write the overview only if it was modified
-      (when (buffer-modified-p buffer)
-	(save-excursion
-	  (set-buffer buffer)
+      (when (and (buffer-live-p buffer) (buffer-modified-p buffer))
+	(with-current-buffer buffer
 	  (if (> (buffer-size) 0)
 	      ;; Non-empty overview, write it to a file.
 	      (gnus-write-buffer-as-coding-system
@@ -145,7 +142,10 @@ it's not cached."
 		;; of any inconsistencies (articles w/o nov entries?).
 		;; for now, just be conservative...delete only if safe -- sj
 		(delete-directory (file-name-directory overview-file))
-	      (error nil)))))
+	      (error)))
+
+	  (gnus-cache-update-overview-total-fetched-for
+	   (car gnus-cache-buffer) overview-file)))
       ;; Kill the buffer -- it's either unmodified or saved.
       (gnus-kill-buffer buffer)
       (setq gnus-cache-buffer nil))))
@@ -156,7 +156,8 @@ it's not cached."
 	     (numberp article)
 	     (> article 0)		; This might be a dummy article.
 	     (vectorp headers))
-    (let ((number article) file)
+    (let ((number article)
+	  file lines-chars)
       ;; If this is a virtual group, we find the real group.
       (when (gnus-virtual-group-p group)
 	(let ((result (nnvirtual-find-group-art
@@ -185,9 +186,13 @@ it's not cached."
 	    (when (> (buffer-size) 0)
 	      (gnus-write-buffer-as-coding-system
 	       gnus-cache-write-file-coding-system file)
+	      (gnus-cache-update-file-total-fetched-for group file)
+	      (setq lines-chars (nnheader-get-lines-and-char))
 	      (nnheader-remove-body)
 	      (setq headers (nnheader-parse-naked-head))
 	      (mail-header-set-number headers number)
+	      (mail-header-set-lines headers (car lines-chars))
+	      (mail-header-set-chars headers (cadr lines-chars))
 	      (gnus-cache-change-buffer group)
 	      (set-buffer (cdr gnus-cache-buffer))
 	      (goto-char (point-max))
@@ -240,12 +245,10 @@ it's not cached."
 (defun gnus-cache-possibly-remove-articles-1 ()
   "Possibly remove some of the removable articles."
   (when (gnus-cache-fully-p gnus-newsgroup-name)
-    (let ((articles gnus-cache-removable-articles)
-	  (cache-articles gnus-newsgroup-cached)
-	  article)
+    (let ((cache-articles gnus-newsgroup-cached))
       (gnus-cache-change-buffer gnus-newsgroup-name)
-      (while articles
-	(when (memq (setq article (pop articles)) cache-articles)
+      (dolist (article gnus-cache-removable-articles)
+	(when (memq article cache-articles)
 	  ;; The article was in the cache, so we see whether we are
 	  ;; supposed to remove it from the cache.
 	  (gnus-cache-possibly-remove-article
@@ -329,9 +332,8 @@ it's not cached."
 If not given a prefix, use the process marked articles instead.
 Returns the list of articles entered."
   (interactive "P")
-  (let ((articles (gnus-summary-work-articles n))
-	article out)
-    (while (setq article (pop articles))
+  (let (out)
+    (dolist (article (gnus-summary-work-articles n))
       (gnus-summary-remove-process-mark article)
       (if (natnump article)
 	  (when (gnus-cache-possibly-enter-article
@@ -353,17 +355,15 @@ If not given a prefix, use the process marked articles instead.
 Returns the list of articles removed."
   (interactive "P")
   (gnus-cache-change-buffer gnus-newsgroup-name)
-  (let ((articles (gnus-summary-work-articles n))
-	article out)
-    (while articles
-      (setq article (pop articles))
+  (let (out)
+    (dolist (article (gnus-summary-work-articles n))
       (gnus-summary-remove-process-mark article)
       (when (gnus-cache-possibly-remove-article article nil nil nil t)
         (when gnus-newsgroup-agentized
           (let ((alist (gnus-agent-load-alist gnus-newsgroup-name)))
             (unless (cdr (assoc article alist))
               (setq gnus-newsgroup-undownloaded
-                    (gnus-add-to-sorted-list 
+                    (gnus-add-to-sorted-list
                      gnus-newsgroup-undownloaded article)))))
 	(push article out))
       (gnus-summary-update-download-mark article)
@@ -427,6 +427,7 @@ Returns the list of articles removed."
       (and (not unread) (not ticked) (not dormant) (memq 'read class))))
 
 (defun gnus-cache-file-name (group article)
+  (setq group (gnus-group-decoded-name group))
   (expand-file-name
    (if (stringp article) article (int-to-string article))
    (file-name-as-directory
@@ -472,13 +473,15 @@ Returns the list of articles removed."
 		   (gnus-cache-member-of-class
 		    gnus-cache-remove-articles ticked dormant unread)))
       (save-excursion
+	(gnus-cache-update-file-total-fetched-for group file t)
 	(delete-file file)
+
 	(set-buffer (cdr gnus-cache-buffer))
 	(goto-char (point-min))
 	(when (or (looking-at (concat (int-to-string number) "\t"))
 		  (search-forward (concat "\n" (int-to-string number) "\t")
 				  (point-max) t))
-	  (gnus-delete-line)))
+	    (gnus-delete-line)))
       (unless (setq gnus-newsgroup-cached
 		    (delq article gnus-newsgroup-cached))
 	(gnus-sethash gnus-newsgroup-name nil gnus-cache-active-hashtb)
@@ -492,7 +495,7 @@ Returns the list of articles removed."
 	articles)
     (when (file-exists-p dir)
       (setq articles
-	    (sort (mapcar (lambda (name) (string-to-int name))
+	    (sort (mapcar (lambda (name) (string-to-number name))
 			  (directory-files dir nil "^[0-9]+$" t))
 		  '<))
       ;; Update the cache active file, just to synch more.
@@ -528,7 +531,7 @@ Returns the list of articles removed."
       (set-buffer cache-buf)
       (if (search-forward (concat "\n" (int-to-string (car cached)) "\t")
 			  nil t)
-	  (setq beg (gnus-point-at-bol)
+	  (setq beg (point-at-bol)
 		end (progn (end-of-line) (point)))
 	(setq beg nil))
       (set-buffer nntp-server-buffer)
@@ -540,35 +543,32 @@ Returns the list of articles removed."
 
 (defun gnus-cache-braid-heads (group cached)
   (let ((cache-buf (gnus-get-buffer-create " *gnus-cache*")))
-    (save-excursion
-      (set-buffer cache-buf)
+    (with-current-buffer cache-buf
       (erase-buffer))
     (set-buffer nntp-server-buffer)
     (goto-char (point-min))
-    (while cached
+    (dolist (entry cached)
       (while (and (not (eobp))
 		  (looking-at "2.. +\\([0-9]+\\) ")
 		  (< (progn (goto-char (match-beginning 1))
 			    (read (current-buffer)))
-		     (car cached)))
+		     entry))
 	(search-forward "\n.\n" nil 'move))
       (beginning-of-line)
-      (save-excursion
-	(set-buffer cache-buf)
-	(erase-buffer)
-	(let ((nnheader-file-coding-system gnus-cache-coding-system))
-	  (nnheader-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 "."))
-      (insert-buffer-substring cache-buf)
-      (setq cached (cdr cached)))
+      (set-buffer cache-buf)
+      (erase-buffer)
+      (let ((nnheader-file-coding-system gnus-cache-coding-system))
+	(nnheader-insert-file-contents (gnus-cache-file-name group entry)))
+      (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))
     (kill-buffer cache-buf)))
 
 ;;;###autoload
@@ -681,24 +681,23 @@ If LOW, update the lower bound instead."
       (gnus-message 5 "Generating the cache active file...")
       (setq gnus-cache-active-hashtb (gnus-make-hashtable 123)))
     (when (string-match "^\\(nn[^_]+\\)_" group)
-      (setq group (replace-match "\\1:" t t group)))
+      (setq group (replace-match "\\1:" t nil group)))
     ;; Separate articles from all other files and directories.
     (while files
       (if (string-match "^[0-9]+$" (file-name-nondirectory (car files)))
-	  (push (string-to-int (file-name-nondirectory (pop files))) nums)
+	  (push (string-to-number (file-name-nondirectory (pop files))) nums)
 	(push (pop files) alphs)))
     ;; If we have nums, then this is probably a valid group.
     (when (setq nums (sort nums '<))
       (gnus-sethash group (cons (car nums) (gnus-last-element nums))
 		    gnus-cache-active-hashtb))
     ;; Go through all the other files.
-    (while alphs
-      (when (and (file-directory-p (car alphs))
+    (dolist (file alphs)
+      (when (and (file-directory-p file)
 		 (not (string-match "^\\."
-				    (file-name-nondirectory (car alphs)))))
+				    (file-name-nondirectory file))))
 	;; We descend directories.
-	(gnus-cache-generate-active (car alphs)))
-      (setq alphs (cdr alphs)))
+	(gnus-cache-generate-active file)))
     ;; Write the new active file.
     (when top
       (gnus-cache-write-active t)
@@ -711,6 +710,9 @@ If LOW, update the lower bound instead."
   (gnus-cache-close)
   (let ((nnml-generate-active-function 'identity))
     (nnml-generate-nov-databases-1 dir))
+
+  (setq gnus-cache-total-fetched-hashtb nil)
+
   (gnus-cache-open))
 
 (defun gnus-cache-move-cache (dir)
@@ -731,6 +733,126 @@ If GROUP is non-nil, also cater to `gnus-cacheable-groups' and
 	      (or (not gnus-uncacheable-groups)
 		  (not (string-match gnus-uncacheable-groups group)))))))
 
+;;;###autoload
+(defun gnus-cache-rename-group (old-group new-group)
+  "Rename OLD-GROUP as NEW-GROUP.  Always updates the cache, even when
+disabled, as the old cache files would corrupt gnus when the cache was
+next enabled. Depends upon the caller to determine whether group renaming is supported."
+  (let ((old-dir (gnus-cache-file-name old-group ""))
+	(new-dir (gnus-cache-file-name new-group "")))
+    (gnus-rename-file old-dir new-dir t))
+
+  (gnus-cache-rename-group-total-fetched-for old-group new-group)
+
+  (let ((no-save gnus-cache-active-hashtb))
+    (unless gnus-cache-active-hashtb
+      (gnus-cache-read-active))
+    (let* ((old-group-hash-value (gnus-gethash old-group gnus-cache-active-hashtb))
+	   (new-group-hash-value (gnus-gethash new-group gnus-cache-active-hashtb))
+	   (delta                (or old-group-hash-value new-group-hash-value)))
+      (gnus-sethash new-group old-group-hash-value gnus-cache-active-hashtb)
+      (gnus-sethash old-group nil gnus-cache-active-hashtb)
+
+      (if no-save
+	  (setq gnus-cache-active-altered delta)
+	(gnus-cache-write-active delta)))))
+
+;;;###autoload
+(defun gnus-cache-delete-group (group)
+  "Delete GROUP.  Always updates the cache, even when
+disabled, as the old cache files would corrupt gnus when the cache was
+next enabled. Depends upon the caller to determine whether group deletion is supported."
+  (let ((dir (gnus-cache-file-name group "")))
+    (gnus-delete-directory dir))
+
+  (gnus-cache-delete-group-total-fetched-for group)
+
+  (let ((no-save gnus-cache-active-hashtb))
+    (unless gnus-cache-active-hashtb
+      (gnus-cache-read-active))
+    (let* ((group-hash-value (gnus-gethash group gnus-cache-active-hashtb)))
+      (gnus-sethash group nil gnus-cache-active-hashtb)
+
+      (if no-save
+	  (setq gnus-cache-active-altered group-hash-value)
+	(gnus-cache-write-active group-hash-value)))))
+
+(defvar gnus-cache-inhibit-update-total-fetched-for nil)
+(defvar gnus-cache-need-update-total-fetched-for nil)
+
+(defmacro gnus-cache-with-refreshed-group (group &rest body)
+  `(prog1 (let ((gnus-cache-inhibit-update-total-fetched-for t))
+	    ,@body)
+     (when (and gnus-cache-need-update-total-fetched-for
+		(not gnus-cache-inhibit-update-total-fetched-for))
+	(save-excursion
+	  (set-buffer gnus-group-buffer)
+	  (setq gnus-cache-need-update-total-fetched-for nil)
+	  (gnus-group-update-group ,group t)))))
+
+(defun gnus-cache-update-file-total-fetched-for (group file &optional subtract)
+  (when gnus-cache-total-fetched-hashtb
+    (gnus-cache-with-refreshed-group
+     group
+     (let* ((entry (or (gnus-gethash group gnus-cache-total-fetched-hashtb)
+		       (gnus-sethash group (make-vector 2 0)
+				     gnus-cache-total-fetched-hashtb)))
+	    size)
+
+       (if file
+	   (setq size (or (nth 7 (file-attributes file)) 0))
+	 (let ((files (directory-files (gnus-cache-file-name group "") 
+				       t nil t))
+	       file attrs)
+	   (setq size 0.0)
+	   (while (setq file (pop files))
+	     (setq attrs (file-attributes file))
+	     (unless (nth 0 attrs)
+	       (incf size (float (nth 7 attrs)))))))	     
+
+       (setq gnus-cache-need-update-total-fetched-for t)
+
+       (incf (nth 1 entry) (if subtract (- size) size))))))
+
+(defun gnus-cache-update-overview-total-fetched-for (group file)
+  (when gnus-cache-total-fetched-hashtb
+    (gnus-cache-with-refreshed-group
+     group
+     (let* ((entry (or (gnus-gethash group gnus-cache-total-fetched-hashtb)
+		       (gnus-sethash group (make-list 2 0) 
+				     gnus-cache-total-fetched-hashtb)))
+	    (size (or (nth 7 (file-attributes 
+			      (or file
+				  (gnus-cache-file-name group ".overview"))))
+		      0)))
+       (setq gnus-cache-need-update-total-fetched-for t)
+       (setf (nth 0 entry) size)))))
+
+(defun gnus-cache-rename-group-total-fetched-for (old-group new-group)
+  "Record of disk space used by OLD-GROUP now associated with NEW-GROUP."
+  (when gnus-cache-total-fetched-hashtb
+    (let ((entry (gnus-gethash old-group gnus-cache-total-fetched-hashtb)))
+      (gnus-sethash new-group entry gnus-cache-total-fetched-hashtb)
+      (gnus-sethash old-group nil gnus-cache-total-fetched-hashtb))))
+
+(defun gnus-cache-delete-group-total-fetched-for (group)
+  "Delete record of disk space used by GROUP being deleted."
+  (when gnus-cache-total-fetched-hashtb
+      (gnus-sethash group nil gnus-cache-total-fetched-hashtb)))
+
+(defun gnus-cache-total-fetched-for (group &optional no-inhibit)
+  "Get total disk space used by the cache for the specified GROUP."
+  (unless gnus-cache-total-fetched-hashtb
+    (setq gnus-cache-total-fetched-hashtb (gnus-make-hashtable 1024)))
+
+  (let* ((entry (gnus-gethash group gnus-cache-total-fetched-hashtb)))
+    (if entry
+	(apply '+ entry)
+      (let ((gnus-cache-inhibit-update-total-fetched-for (not no-inhibit)))
+	(+ 
+	 (gnus-cache-update-overview-total-fetched-for group nil)
+	 (gnus-cache-update-file-total-fetched-for     group nil))))))
+
 (provide 'gnus-cache)
 
 ;;; gnus-cache.el ends here