X-Git-Url: http://cgit.sxemacs.org/?a=blobdiff_plain;f=lisp%2Fgnus-cache.el;h=a0763f37c9958b1a213c49503498484a15d68229;hb=7361bb8cc9f2684c3133ee45667d7263bd5d8a90;hp=0f009f3cc52d59ecc5f4e96d82faf949374d7420;hpb=dfe2be6a7d23a287ecb44e495675d8c83dc44c8c;p=gnus

diff --git a/lisp/gnus-cache.el b/lisp/gnus-cache.el
index 0f009f3cc..a0763f37c 100644
--- a/lisp/gnus-cache.el
+++ b/lisp/gnus-cache.el
@@ -1,5 +1,6 @@
 ;;; gnus-cache.el --- cache interface for Gnus
-;; Copyright (C) 1995,96,97,98,99 Free Software Foundation, Inc.
+;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+;;        Free Software Foundation, Inc.
 
 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
 ;; 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.
@@ -159,11 +160,7 @@ it's not cached."
       (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
@@ -175,12 +172,15 @@ 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)
-	      (setq headers (nnheader-parse-head t))
+	      (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))
@@ -206,8 +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))))))
 
@@ -232,7 +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)
@@ -280,9 +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
@@ -304,7 +303,7 @@ it's not cached."
 	    ;; unsuccessful), so we use the cached headers exclusively.
 	    (set-buffer nntp-server-buffer)
 	    (erase-buffer)
-	    (let ((coding-system-for-read 
+	    (let ((coding-system-for-read
 		   gnus-cache-overview-coding-system))
 	      (insert-file-contents cache-file))
 	    'nov)
@@ -339,7 +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."
@@ -364,15 +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.
 
@@ -394,7 +398,7 @@ Returns the list of articles removed."
       (erase-buffer)
       (let ((file (gnus-cache-file-name group ".overview")))
 	(when (file-exists-p file)
-	  (mm-insert-file-contents file)))
+	  (nnheader-insert-file-contents file)))
       ;; We have a fresh (empty/just loaded) buffer,
       ;; mark it as unmodified to save a redundant write later.
       (set-buffer-modified-p nil))))
@@ -407,18 +411,23 @@ 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."
@@ -455,8 +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)))
 
@@ -470,9 +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)
@@ -482,9 +497,9 @@ Returns the list of articles removed."
     (save-excursion
       (set-buffer cache-buf)
       (erase-buffer)
-      (let ((coding-system-for-read 
-	    gnus-cache-overview-coding-system))
-	(insert-file-contents 
+      (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")
@@ -496,13 +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"))
@@ -524,20 +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)
-	(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 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)))
@@ -552,6 +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))
@@ -580,7 +596,7 @@ $ emacs -batch -l ~/.emacs -l gnus -f gnus-jog-cache"
     ;; 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
@@ -592,10 +608,28 @@ $ emacs -batch -l ~/.emacs -l gnus -f gnus-jog-cache"
   (when (or force
 	    (and gnus-cache-active-hashtb
 		 gnus-cache-active-altered))
-    (gnus-write-active-file gnus-cache-active-file 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."
@@ -662,13 +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