1 ;;; gnus-move.el --- commands for moving Gnus from one server to another
3 ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004,
4 ;; 2005 Free Software Foundation, Inc.
6 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
9 ;; This file is part of GNU Emacs.
11 ;; GNU Emacs is free software; you can redistribute it and/or modify
12 ;; it under the terms of the GNU General Public License as published by
13 ;; the Free Software Foundation; either version 2, or (at your option)
16 ;; GNU Emacs is distributed in the hope that it will be useful,
17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 ;; GNU General Public License for more details.
21 ;; You should have received a copy of the GNU General Public License
22 ;; along with GNU Emacs; see the file COPYING. If not, write to the
23 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
24 ;; Boston, MA 02110-1301, USA.
30 (eval-when-compile (require 'cl))
38 ;;; Moving by comparing Message-ID's.
42 (defun gnus-change-server (from-server to-server)
43 "Move from FROM-SERVER to TO-SERVER.
44 Update the .newsrc.eld file to reflect the change of nntp server."
46 (list gnus-select-method (gnus-read-method "Move to method: ")))
49 (let ((gnus-activate-level 0)
51 (nnmail-spool-file nil))
55 ;; Go through all groups and translate.
56 (let ((nntp-nov-gap nil))
57 (dolist (info gnus-newsrc-alist)
58 (when (gnus-group-native-p (gnus-info-group info))
59 (gnus-move-group-to-server info from-server to-server))))))
61 (defun gnus-move-group-to-server (info from-server to-server)
62 "Move group INFO from FROM-SERVER to TO-SERVER."
63 (let ((group (gnus-info-group info))
64 to-active hashtb type mark marks
65 to-article to-reads to-marks article
67 (gnus-message 7 "Translating %s..." group)
68 (when (gnus-request-group group nil to-server)
69 (setq to-active (gnus-parse-active)
70 hashtb (gnus-make-hashtable 1024)
71 act-articles (gnus-uncompress-range to-active))
72 ;; Fetch the headers from the `to-server'.
75 (setq type (gnus-retrieve-headers
78 ;; Convert HEAD headers. I don't care.
79 (when (eq type 'headers)
80 (nnvirtual-convert-headers))
81 ;; Create a mapping from Message-ID to article number.
82 (set-buffer nntp-server-buffer)
83 (goto-char (point-min))
85 "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t")
87 (buffer-substring (match-beginning 1) (match-end 1))
88 (read (current-buffer))
91 ;; Then we read the headers from the `from-server'.
92 (when (and (gnus-request-group group nil from-server)
94 (gnus-uncompress-range
96 (setq type (gnus-retrieve-headers
97 (gnus-uncompress-range
100 ;; Make it easier to map marks.
101 (let ((mark-lists (gnus-info-marks info))
104 (setq type (caar mark-lists)
105 ms (gnus-uncompress-range (cdr (pop mark-lists))))
107 (if (setq m (assq (car ms) marks))
108 (setcdr m (cons type (cdr m)))
109 (push (list (car ms) type) marks))
112 (when (eq type 'headers)
113 (nnvirtual-convert-headers))
114 ;; Go through the headers and map away.
115 (set-buffer nntp-server-buffer)
116 (goto-char (point-min))
118 "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t")
119 (when (setq to-article
121 (buffer-substring (match-beginning 1) (match-end 1))
123 ;; Add this article to the list of read articles.
124 (push to-article to-reads)
125 ;; See if there are any marks and then add them.
126 (when (setq mark (assq (read (current-buffer)) marks))
127 (setq marks (delq mark marks))
128 (setcar mark to-article)
129 (push mark to-marks))
131 ;; Now we know what the read articles are and what the
132 ;; article marks are. We transform the information
133 ;; into the Gnus info format.
136 (gnus-compress-sequence
137 (and (setq to-reads (delq nil to-reads))
140 (cons 1 (1- (car to-active)))))
141 (gnus-info-set-read info to-reads)
142 ;; Do the marks. I'm sure y'all understand what's
143 ;; going on down below, so I won't bother with any
144 ;; further comments. <duck>
145 (let ((mlists gnus-article-mark-lists)
148 (push (list (cdr (pop mlists))) lists))
149 (while (setq ms (pop marks))
150 (setq article (pop ms))
152 (setcdr (setq a (assq (pop ms) lists))
153 (cons article (cdr a)))))
156 (setcdr (car a) (gnus-compress-sequence
157 (and (cdar a) (sort (cdar a) '<))))
159 (gnus-info-set-marks info lists t)))))
160 (gnus-message 7 "Translating %s...done" group)))
162 (defun gnus-group-move-group-to-server (info from-server to-server)
163 "Move the group on the current line from FROM-SERVER to TO-SERVER."
165 (let ((info (gnus-get-info (gnus-group-group-name))))
166 (list info (gnus-find-method-for-group (gnus-info-group info))
167 (gnus-read-method (format "Move group %s to method: "
168 (gnus-info-group info))))))
170 (gnus-move-group-to-server info from-server to-server)
171 ;; We have to update the group info to point use the right server.
172 (gnus-info-set-method info to-server t)
173 ;; We also have to change the name of the group and stuff.
174 (let* ((group (gnus-info-group info))
175 (new-name (gnus-group-prefixed-name
176 (gnus-group-real-name group) to-server)))
177 (gnus-info-set-group info new-name)
178 (gnus-sethash new-name (gnus-group-entry group) gnus-newsrc-hashtb)
179 (gnus-sethash group nil gnus-newsrc-hashtb))))
183 ;;; gnus-move.el ends here