* nnkiboze.el (nnkiboze-request-article): Use

	gnus-agent-request-article.

	* nnagent.el (nnagent-retrieve-headers): Don't use nnml
	function. Insert undownloaded NOV.

	* gnus-agent.el (gnus-agent-retrieve-headers): New function.
	(gnus-agent-request-article): New function.

	* gnus.el (gnus-agent-cache): New variable.

	* gnus-int.el (gnus-retrieve-headers): Use
	gnus-agent-retrieve-headers.
	(gnus-request-head): Use gnus-agent-request-article.
	(gnus-request-body): Ditto.

	* gnus-art.el (gnus-request-article-this-buffer): Use
	gnus-agent-request-article.

	* gnus-sum.el (gnus-summary-read-group-1): Don't show the first
	article if it is undownloaded.

diff --git a/lisp/ChangeLog b/lisp/ChangeLog
index b8f8e07..4b4b71e 100644 (file)
--- a/lisp/ChangeLog
+++ b/lisp/ChangeLog
@@ -1,3 +1,27 @@
+2002-01-10  ShengHuo ZHU  <zsh@cs.rochester.edu>
+
+       * nnkiboze.el (nnkiboze-request-article): Use
+       gnus-agent-request-article.
+
+       * nnagent.el (nnagent-retrieve-headers): Don't use nnml
+       function. Insert undownloaded NOV.
+       
+       * gnus-agent.el (gnus-agent-retrieve-headers): New function.
+       (gnus-agent-request-article): New function.
+
+       * gnus.el (gnus-agent-cache): New variable.
+
+       * gnus-int.el (gnus-retrieve-headers): Use
+       gnus-agent-retrieve-headers.
+       (gnus-request-head): Use gnus-agent-request-article.
+       (gnus-request-body): Ditto.
+
+       * gnus-art.el (gnus-request-article-this-buffer): Use 
+       gnus-agent-request-article.
+
+       * gnus-sum.el (gnus-summary-read-group-1): Don't show the first
+       article if it is undownloaded.
+
 2002-01-10  Katsumi Yamaoka  <yamaoka@jpl.org>
 
        * gnus-spec.el (gnus-spec-tab): Deal with wide characters.

diff --git a/lisp/gnus-agent.el b/lisp/gnus-agent.el
index 39f2e71..14a1a55 100644 (file)
--- a/lisp/gnus-agent.el
+++ b/lisp/gnus-agent.el
@@ -1006,7 +1006,8 @@ the actual number of articles toggled is returned."
 (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)))
+       (file (gnus-agent-article-name ".overview" group))
+       gnus-agent-cache)
     ;; Add article with marks to list of article headers we want to fetch.
     (dolist (arts (gnus-info-marks (gnus-get-info group)))
       (setq articles (gnus-range-add articles (cdr arts))))
@@ -1784,6 +1785,75 @@ The following commands are available:
   (gnus-group-send-queue)
   (gnus-agent-fetch-session))
 
+(defun gnus-agent-retrieve-headers (articles group &optional fetch-old)
+  (save-excursion
+    (gnus-agent-create-buffer)
+    (let ((gnus-decode-encoded-word-function 'identity)
+         (file (gnus-agent-article-name ".overview" group))
+         cached-articles uncached-articles)
+      (gnus-make-directory (nnheader-translate-file-chars
+                         (file-name-directory file) t))
+      (when (file-exists-p file)
+       (with-current-buffer gnus-agent-overview-buffer
+         (erase-buffer)
+         (nnheader-insert-file-contents file)
+         (goto-char (point-min)) 
+         (while (not (eobp))
+           (when (looking-at "[0-9]")
+             (push (read (current-buffer)) cached-articles))
+           (forward-line 1))
+         (setq cached-articles (sort cached-articles '<))))
+      (when (setq uncached-articles 
+                 (gnus-set-difference articles cached-articles))
+       (let (gnus-agent-cache)
+         (unless (eq 'nov 
+                     (gnus-retrieve-headers 
+                      uncached-articles group fetch-old))
+           (nnvirtual-convert-headers)))
+       (set-buffer nntp-server-buffer)
+       (with-current-buffer gnus-agent-overview-buffer
+         (erase-buffer))
+       (copy-to-buffer gnus-agent-overview-buffer (point-min) (point-max))
+       (when (and uncached-articles (file-exists-p file))
+         (gnus-agent-braid-nov group uncached-articles file))
+       (let ((coding-system-for-write
+              gnus-agent-file-coding-system))
+         (write-region (point-min) (point-max) file nil 'silent))
+       (gnus-agent-save-alist group uncached-articles nil)
+       (gnus-agent-open-history)
+       (setq gnus-agent-current-history (gnus-agent-history-buffer))
+       (gnus-agent-enter-history
+        "last-header-fetched-for-session"
+        (list (cons group (nth (- (length  articles) 1) articles)))
+        (time-to-days (current-time)))
+       (gnus-agent-save-history)))
+    (set-buffer nntp-server-buffer)
+    (insert-buffer-substring gnus-agent-overview-buffer)
+    (if (and fetch-old
+            (not (numberp fetch-old)))
+       t                               ; Don't remove anything.
+      (nnheader-nov-delete-outside-range
+       (if fetch-old (max 1 (- (car articles) fetch-old))
+        (car articles))
+       (car (last articles)))
+      t)
+    'nov))
+
+(defun gnus-agent-request-article (article group)
+  "Retrieve ARTICLE in GROUP from the agent cache."
+  (let* ((gnus-command-method (gnus-find-method-for-group group))
+        (file (concat
+                 (gnus-agent-directory)
+                 (gnus-agent-group-path group) "/"
+                 (number-to-string article)))
+       (buffer-read-only nil))
+    (when (file-exists-p file)
+      (erase-buffer)
+      (gnus-kill-all-overlays)
+      (let ((coding-system-for-read gnus-cache-coding-system))
+       (insert-file-contents file))
+      t)))
+
 (provide 'gnus-agent)
 
 ;;; gnus-agent.el ends here

diff --git a/lisp/gnus-art.el b/lisp/gnus-art.el
index fe87893..bf19d1c 100644 (file)
--- a/lisp/gnus-art.el
+++ b/lisp/gnus-art.el
@@ -4818,6 +4818,11 @@ If given a prefix, show the hidden text instead."
                 (numberp article)
                 (gnus-cache-request-article article group))
            'article)
+          ;; Check the agent cache.
+          ((and gnus-agent gnus-agent-cache gnus-plugged
+                (numberp article)
+                (gnus-agent-request-article article group))
+           'article)
           ;; Get the article and put into the article buffer.
           ((or (stringp article)
                (numberp article))

diff --git a/lisp/gnus-int.el b/lisp/gnus-int.el
index fbb50db..7bfc517 100644 (file)
--- a/lisp/gnus-int.el
+++ b/lisp/gnus-int.el
@@ -300,11 +300,16 @@ this group uses will be queried."
   "Request headers for ARTICLES in GROUP.
 If FETCH-OLD, retrieve all headers (or some subset thereof) in the group."
   (let ((gnus-command-method (gnus-find-method-for-group group)))
-    (if (and gnus-use-cache (numberp (car articles)))
-       (gnus-cache-retrieve-headers articles group fetch-old)
+    (cond
+     ((and gnus-use-cache (numberp (car articles)))
+      (gnus-cache-retrieve-headers articles group fetch-old))
+     ((and gnus-agent gnus-agent-cache gnus-plugged 
+          (gnus-agent-method-p gnus-command-method))
+      (gnus-agent-retrieve-headers articles group fetch-old))
+     (t
       (funcall (gnus-get-function gnus-command-method 'retrieve-headers)
               articles (gnus-group-real-name group)
-              (nth 1 gnus-command-method) fetch-old))))
+              (nth 1 gnus-command-method) fetch-old)))))
 
 (defun gnus-retrieve-articles (articles group)
   "Request ARTICLES in GROUP."
@@ -369,6 +374,11 @@ If BUFFER, insert the article in that group."
           (gnus-cache-request-article article group))
       (setq res (cons group article)
            clean-up t))
+     ((and gnus-agent gnus-agent-cache gnus-plugged
+          (numberp article)
+          (gnus-agent-request-article article group))
+      (setq res (cons group article)
+           clean-up t))
      ;; Use `head' function.
      ((fboundp head)
       (setq res (funcall head article (gnus-group-real-name group)
@@ -398,6 +408,12 @@ If BUFFER, insert the article in that group."
           (gnus-cache-request-article article group))
       (setq res (cons group article)
            clean-up t))
+     ;; Check the agent cache.
+     ((and gnus-agent gnus-agent-cache gnus-plugged
+          (numberp article)
+          (gnus-agent-request-article article group))
+      (setq res (cons group article)
+           clean-up t))
      ;; Use `head' function.
      ((fboundp head)
       (setq res (funcall head article (gnus-group-real-name group)

diff --git a/lisp/gnus-sum.el b/lisp/gnus-sum.el
index d59c545..03dc455 100644 (file)
--- a/lisp/gnus-sum.el
+++ b/lisp/gnus-sum.el
@@ -3290,7 +3290,9 @@ If NO-DISPLAY, don't generate a summary buffer."
                 gnus-auto-select-first)
            (progn
              (gnus-configure-windows 'summary)
-             (gnus-summary-goto-article (gnus-summary-article-number)))
+             (let ((art (gnus-summary-article-number)))
+               (unless (memq art gnus-newsgroup-undownloaded)
+                 (gnus-summary-goto-article art))))
          ;; Don't select any articles.
          (gnus-summary-position-point)
          (gnus-configure-windows 'summary 'force)

diff --git a/lisp/gnus.el b/lisp/gnus.el
index 781186a..0e7b9c4 100644 (file)
--- a/lisp/gnus.el
+++ b/lisp/gnus.el
@@ -1760,6 +1760,9 @@ face."
 (defvar gnus-plugged t
   "Whether Gnus is plugged or not.")
 
+(defvar gnus-agent-cache t
+  "Whether Gnus use agent cache.")
+
 (defcustom gnus-default-charset 'iso-8859-1
   "Default charset assumed to be used when viewing non-ASCII characters.
 This variable is overridden on a group-to-group basis by the
@@ -2119,7 +2122,8 @@ gnus-newsrc-hashtb should be kept so that both hold the same information.")
      ("gnus-agent" gnus-open-agent gnus-agent-get-function
       gnus-agent-save-groups gnus-agent-save-active gnus-agent-method-p
       gnus-agent-get-undownloaded-list gnus-agent-fetch-session
-      gnus-summary-set-agent-mark gnus-agent-save-group-info)
+      gnus-summary-set-agent-mark gnus-agent-save-group-info
+      gnus-agent-request-article gnus-agent-retrieve-headers)
      ("gnus-agent" :interactive t
       gnus-unplugged gnus-agentize gnus-agent-batch)
      ("gnus-vm" :interactive t gnus-summary-save-in-vm

diff --git a/lisp/nnagent.el b/lisp/nnagent.el
index 6a3b7be..3d7ac9a 100644 (file)
--- a/lisp/nnagent.el
+++ b/lisp/nnagent.el
@@ -128,6 +128,43 @@
     (append-to-file (point-min) (point-max) (gnus-agent-lib-file "flags")))
   nil)
 
+(deffoo nnagent-retrieve-headers (articles &optional group server fetch-old)
+  (let ((file (gnus-agent-article-name ".overview" group))
+       (arts articles) n)
+    (save-excursion
+      (set-buffer nntp-server-buffer)
+      (erase-buffer)
+      (nnheader-insert-file-contents file)
+      (goto-char (point-min)) 
+      (while (and arts (not (eobp)))
+       (cond 
+        ((looking-at "[0-9]")
+         (setq n (read (current-buffer)))
+         (if (> n (car arts))
+             (beginning-of-line))
+         (while (and arts (> n (car arts)))
+           (insert (format 
+                    "%d\t[Undownloaded article %d]\tGnus Agent\t\t\t\n"
+                    (car arts) (car arts)))
+           (pop arts))
+         (if (= n (car arts))
+           (pop arts))))
+       (forward-line 1))
+      (while (and arts)
+       (insert (format
+                "%d\t[Undownloaded article %d]\tGnus Agent\t\t\t\n"
+                (car arts) (car arts)))
+       (pop arts))
+      (if (and fetch-old
+              (not (numberp fetch-old)))
+         t                             ; Don't remove anything.
+       (nnheader-nov-delete-outside-range
+        (if fetch-old (max 1 (- (car articles) fetch-old))
+          (car articles))
+        (car (last articles)))
+       t)
+      'nov)))
+
 (deffoo nnagent-request-group (group &optional server dont-check)
   (nnoo-parent-function 'nnagent 'nnml-request-group
                        (list group (nnagent-server server) dont-check)))
@@ -178,10 +215,6 @@
   (nnoo-parent-function 'nnagent 'nnml-request-scan
                        (list group (nnagent-server server))))
 
-(deffoo nnagent-retrieve-headers (sequence &optional group server fetch-old)
-  (nnoo-parent-function 'nnagent 'nnml-retrieve-headers
-                       (list sequence group (nnagent-server server) fetch-old)))
-
 (deffoo nnagent-set-status (article name value &optional group server)
   (nnoo-parent-function 'nnagent 'nnml-set-status
                        (list article name value group (nnagent-server server))))

diff --git a/lisp/nnkiboze.el b/lisp/nnkiboze.el
index 0da7857..2838537 100644 (file)
--- a/lisp/nnkiboze.el
+++ b/lisp/nnkiboze.el
@@ -109,7 +109,8 @@
       (setq num (string-to-int (match-string 2 xref))
            group (match-string 1 xref))
       (or (with-current-buffer buffer
-           (gnus-cache-request-article num group))
+           (or (gnus-cache-request-article num group)
+               (gnus-agent-request-article num group)))
          (gnus-request-article num group buffer)))))
 
 (deffoo nnkiboze-request-scan (&optional group server)