[Emacs-diffs] Changes to emacs/lisp/gnus/gnus-move.el [lexbind]

[Miles Bader]

Index: emacs/lisp/gnus/gnus-move.el
diff -c /dev/null emacs/lisp/gnus/gnus-move.el:1.5.18.1
*** /dev/null   Tue Oct 14 19:34:54 2003
--- emacs/lisp/gnus/gnus-move.el        Tue Oct 14 19:34:50 2003
***************
*** 0 ****
--- 1,186 ----
+ ;;; gnus-move.el --- commands for moving Gnus from one server to another
+ ;; Copyright (C) 1996, 1997, 1998, 1999, 2000
+ ;;        Free Software Foundation, Inc.
+ 
+ ;; Author: Lars Magne Ingebrigtsen <address@hidden>
+ ;; Keywords: news
+ 
+ ;; This file is part of GNU Emacs.
+ 
+ ;; GNU Emacs is free software; you can redistribute it and/or modify
+ ;; it under the terms of the GNU General Public License as published by
+ ;; the Free Software Foundation; either version 2, or (at your option)
+ ;; any later version.
+ 
+ ;; GNU Emacs is distributed in the hope that it will be useful,
+ ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.        See the
+ ;; GNU General Public License for more details.
+ 
+ ;; 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.
+ 
+ ;;; Commentary:
+ 
+ ;;; Code:
+ 
+ (eval-when-compile (require 'cl))
+ 
+ (require 'gnus)
+ (require 'gnus-start)
+ (require 'gnus-int)
+ (require 'gnus-range)
+ 
+ ;;;
+ ;;; Moving by comparing Message-ID's.
+ ;;;
+ 
+ ;;;###autoload
+ (defun gnus-change-server (from-server to-server)
+   "Move from FROM-SERVER to TO-SERVER.
+ Update the .newsrc.eld file to reflect the change of nntp server."
+   (interactive
+    (list gnus-select-method (gnus-read-method "Move to method: ")))
+ 
+   ;; First start Gnus.
+   (let ((gnus-activate-level 0)
+       (mail-sources nil)
+       (nnmail-spool-file nil))
+     (gnus))
+ 
+   (save-excursion
+     ;; Go through all groups and translate.
+     (let ((newsrc gnus-newsrc-alist)
+         (nntp-nov-gap nil)
+         info)
+       (while (setq info (pop newsrc))
+       (when (gnus-group-native-p (gnus-info-group info))
+         (gnus-move-group-to-server info from-server to-server))))))
+ 
+ (defun gnus-move-group-to-server (info from-server to-server)
+   "Move group INFO from FROM-SERVER to TO-SERVER."
+   (let ((group (gnus-info-group info))
+       to-active hashtb type mark marks
+       to-article to-reads to-marks article
+       act-articles)
+     (gnus-message 7 "Translating %s..." group)
+     (when (gnus-request-group group nil to-server)
+       (setq to-active (gnus-parse-active)
+           hashtb (gnus-make-hashtable 1024)
+           act-articles (gnus-uncompress-range to-active))
+       ;; Fetch the headers from the `to-server'.
+       (when (and to-active
+                act-articles
+                (setq type (gnus-retrieve-headers
+                            act-articles
+                            group to-server)))
+       ;; Convert HEAD headers.  I don't care.
+       (when (eq type 'headers)
+         (nnvirtual-convert-headers))
+       ;; Create a mapping from Message-ID to article number.
+       (set-buffer nntp-server-buffer)
+       (goto-char (point-min))
+       (while (looking-at
+               "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t")
+         (gnus-sethash
+          (buffer-substring (match-beginning 1) (match-end 1))
+          (read (current-buffer))
+          hashtb)
+         (forward-line 1))
+       ;; Then we read the headers from the `from-server'.
+       (when (and (gnus-request-group group nil from-server)
+                  (gnus-active group)
+                  (gnus-uncompress-range
+                   (gnus-active group))
+                  (setq type (gnus-retrieve-headers
+                              (gnus-uncompress-range
+                               (gnus-active group))
+                              group from-server)))
+         ;; Make it easier to map marks.
+         (let ((mark-lists (gnus-info-marks info))
+               ms type m)
+           (while mark-lists
+             (setq type (caar mark-lists)
+                   ms (gnus-uncompress-range (cdr (pop mark-lists))))
+             (while ms
+               (if (setq m (assq (car ms) marks))
+                   (setcdr m (cons type (cdr m)))
+                 (push (list (car ms) type) marks))
+               (pop ms))))
+         ;; Convert.
+         (when (eq type 'headers)
+           (nnvirtual-convert-headers))
+         ;; Go through the headers and map away.
+         (set-buffer nntp-server-buffer)
+         (goto-char (point-min))
+         (while (looking-at
+                 "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t")
+           (when (setq to-article
+                       (gnus-gethash
+                        (buffer-substring (match-beginning 1) (match-end 1))
+                        hashtb))
+             ;; Add this article to the list of read articles.
+             (push to-article to-reads)
+             ;; See if there are any marks and then add them.
+             (when (setq mark (assq (read (current-buffer)) marks))
+               (setq marks (delq mark marks))
+               (setcar mark to-article)
+               (push mark to-marks))
+             (forward-line 1)))
+         ;; Now we know what the read articles are and what the
+         ;; article marks are.  We transform the information
+         ;; into the Gnus info format.
+         (setq to-reads
+               (gnus-range-add
+                (gnus-compress-sequence
+                 (and (setq to-reads (delq nil to-reads))
+                      (sort to-reads '<))
+                 t)
+                (cons 1 (1- (car to-active)))))
+         (gnus-info-set-read info to-reads)
+         ;; Do the marks.  I'm sure y'all understand what's
+         ;; going on down below, so I won't bother with any
+         ;; further comments.  <duck>
+         (let ((mlists gnus-article-mark-lists)
+               lists ms a)
+           (while mlists
+             (push (list (cdr (pop mlists))) lists))
+           (while (setq ms (pop marks))
+             (setq article (pop ms))
+             (while ms
+               (setcdr (setq a (assq (pop ms) lists))
+                       (cons article (cdr a)))))
+           (setq a lists)
+           (while a
+             (setcdr (car a) (gnus-compress-sequence
+                              (and (cdar a) (sort (cdar a) '<))))
+             (pop a))
+           (gnus-info-set-marks info lists t)))))
+     (gnus-message 7 "Translating %s...done" group)))
+ 
+ (defun gnus-group-move-group-to-server (info from-server to-server)
+   "Move the group on the current line from FROM-SERVER to TO-SERVER."
+   (interactive
+    (let ((info (gnus-get-info (gnus-group-group-name))))
+      (list info (gnus-find-method-for-group (gnus-info-group info))
+          (gnus-read-method (format "Move group %s to method: "
+                                    (gnus-info-group info))))))
+   (save-excursion
+     (gnus-move-group-to-server info from-server to-server)
+     ;; We have to update the group info to point use the right server.
+     (gnus-info-set-method info to-server t)
+     ;; We also have to change the name of the group and stuff.
+     (let* ((group (gnus-info-group info))
+          (new-name (gnus-group-prefixed-name
+                     (gnus-group-real-name group) to-server)))
+       (gnus-info-set-group info new-name)
+       (gnus-sethash new-name (gnus-gethash group gnus-newsrc-hashtb)
+                   gnus-newsrc-hashtb)
+       (gnus-sethash group nil gnus-newsrc-hashtb))))
+ 
+ (provide 'gnus-move)
+ 
+ ;;; arch-tag: 503742b8-7d66-4d79-bb31-4a698070707b
+ ;;; gnus-move.el ends here