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eec82323 | 1 | ;;; gnus-move.el --- commands for moving Gnus from one server to another |
e84b4b86 TTN |
2 | |
3 | ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2002, 2003, 2004, | |
88e6695f | 4 | ;; 2005, 2006 Free Software Foundation, Inc. |
eec82323 | 5 | |
6748645f | 6 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> |
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7 | ;; Keywords: news |
8 | ||
9 | ;; This file is part of GNU Emacs. | |
10 | ||
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) | |
14 | ;; any later version. | |
15 | ||
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. | |
20 | ||
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 | |
3a35cf56 LK |
23 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
24 | ;; Boston, MA 02110-1301, USA. | |
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25 | |
26 | ;;; Commentary: | |
27 | ||
28 | ;;; Code: | |
29 | ||
51bab999 RS |
30 | (eval-when-compile (require 'cl)) |
31 | ||
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32 | (require 'gnus) |
33 | (require 'gnus-start) | |
34 | (require 'gnus-int) | |
35 | (require 'gnus-range) | |
36 | ||
37 | ;;; | |
38 | ;;; Moving by comparing Message-ID's. | |
39 | ;;; | |
40 | ||
41 | ;;;###autoload | |
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." | |
45 | (interactive | |
46 | (list gnus-select-method (gnus-read-method "Move to method: "))) | |
47 | ||
48 | ;; First start Gnus. | |
49 | (let ((gnus-activate-level 0) | |
16409b0b | 50 | (mail-sources nil) |
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51 | (nnmail-spool-file nil)) |
52 | (gnus)) | |
53 | ||
54 | (save-excursion | |
55 | ;; Go through all groups and translate. | |
56 | (let ((newsrc gnus-newsrc-alist) | |
57 | (nntp-nov-gap nil) | |
58 | info) | |
59 | (while (setq info (pop newsrc)) | |
60 | (when (gnus-group-native-p (gnus-info-group info)) | |
61 | (gnus-move-group-to-server info from-server to-server)))))) | |
62 | ||
63 | (defun gnus-move-group-to-server (info from-server to-server) | |
64 | "Move group INFO from FROM-SERVER to TO-SERVER." | |
65 | (let ((group (gnus-info-group info)) | |
66 | to-active hashtb type mark marks | |
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67 | to-article to-reads to-marks article |
68 | act-articles) | |
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69 | (gnus-message 7 "Translating %s..." group) |
70 | (when (gnus-request-group group nil to-server) | |
71 | (setq to-active (gnus-parse-active) | |
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72 | hashtb (gnus-make-hashtable 1024) |
73 | act-articles (gnus-uncompress-range to-active)) | |
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74 | ;; Fetch the headers from the `to-server'. |
75 | (when (and to-active | |
a8151ef7 | 76 | act-articles |
eec82323 | 77 | (setq type (gnus-retrieve-headers |
a8151ef7 | 78 | act-articles |
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79 | group to-server))) |
80 | ;; Convert HEAD headers. I don't care. | |
81 | (when (eq type 'headers) | |
82 | (nnvirtual-convert-headers)) | |
83 | ;; Create a mapping from Message-ID to article number. | |
84 | (set-buffer nntp-server-buffer) | |
85 | (goto-char (point-min)) | |
86 | (while (looking-at | |
87 | "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t") | |
88 | (gnus-sethash | |
89 | (buffer-substring (match-beginning 1) (match-end 1)) | |
90 | (read (current-buffer)) | |
91 | hashtb) | |
92 | (forward-line 1)) | |
93 | ;; Then we read the headers from the `from-server'. | |
94 | (when (and (gnus-request-group group nil from-server) | |
95 | (gnus-active group) | |
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96 | (gnus-uncompress-range |
97 | (gnus-active group)) | |
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98 | (setq type (gnus-retrieve-headers |
99 | (gnus-uncompress-range | |
100 | (gnus-active group)) | |
101 | group from-server))) | |
102 | ;; Make it easier to map marks. | |
103 | (let ((mark-lists (gnus-info-marks info)) | |
104 | ms type m) | |
105 | (while mark-lists | |
106 | (setq type (caar mark-lists) | |
107 | ms (gnus-uncompress-range (cdr (pop mark-lists)))) | |
108 | (while ms | |
109 | (if (setq m (assq (car ms) marks)) | |
110 | (setcdr m (cons type (cdr m))) | |
111 | (push (list (car ms) type) marks)) | |
112 | (pop ms)))) | |
113 | ;; Convert. | |
114 | (when (eq type 'headers) | |
115 | (nnvirtual-convert-headers)) | |
116 | ;; Go through the headers and map away. | |
117 | (set-buffer nntp-server-buffer) | |
118 | (goto-char (point-min)) | |
119 | (while (looking-at | |
120 | "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t") | |
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121 | (when (setq to-article |
122 | (gnus-gethash | |
123 | (buffer-substring (match-beginning 1) (match-end 1)) | |
124 | hashtb)) | |
125 | ;; Add this article to the list of read articles. | |
126 | (push to-article to-reads) | |
127 | ;; See if there are any marks and then add them. | |
128 | (when (setq mark (assq (read (current-buffer)) marks)) | |
129 | (setq marks (delq mark marks)) | |
130 | (setcar mark to-article) | |
131 | (push mark to-marks)) | |
132 | (forward-line 1))) | |
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133 | ;; Now we know what the read articles are and what the |
134 | ;; article marks are. We transform the information | |
135 | ;; into the Gnus info format. | |
136 | (setq to-reads | |
137 | (gnus-range-add | |
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138 | (gnus-compress-sequence |
139 | (and (setq to-reads (delq nil to-reads)) | |
140 | (sort to-reads '<)) | |
141 | t) | |
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142 | (cons 1 (1- (car to-active))))) |
143 | (gnus-info-set-read info to-reads) | |
144 | ;; Do the marks. I'm sure y'all understand what's | |
145 | ;; going on down below, so I won't bother with any | |
146 | ;; further comments. <duck> | |
147 | (let ((mlists gnus-article-mark-lists) | |
148 | lists ms a) | |
149 | (while mlists | |
150 | (push (list (cdr (pop mlists))) lists)) | |
151 | (while (setq ms (pop marks)) | |
152 | (setq article (pop ms)) | |
153 | (while ms | |
154 | (setcdr (setq a (assq (pop ms) lists)) | |
155 | (cons article (cdr a))))) | |
156 | (setq a lists) | |
157 | (while a | |
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158 | (setcdr (car a) (gnus-compress-sequence |
159 | (and (cdar a) (sort (cdar a) '<)))) | |
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160 | (pop a)) |
161 | (gnus-info-set-marks info lists t))))) | |
162 | (gnus-message 7 "Translating %s...done" group))) | |
163 | ||
164 | (defun gnus-group-move-group-to-server (info from-server to-server) | |
165 | "Move the group on the current line from FROM-SERVER to TO-SERVER." | |
166 | (interactive | |
167 | (let ((info (gnus-get-info (gnus-group-group-name)))) | |
168 | (list info (gnus-find-method-for-group (gnus-info-group info)) | |
169 | (gnus-read-method (format "Move group %s to method: " | |
170 | (gnus-info-group info)))))) | |
171 | (save-excursion | |
172 | (gnus-move-group-to-server info from-server to-server) | |
173 | ;; We have to update the group info to point use the right server. | |
174 | (gnus-info-set-method info to-server t) | |
175 | ;; We also have to change the name of the group and stuff. | |
176 | (let* ((group (gnus-info-group info)) | |
177 | (new-name (gnus-group-prefixed-name | |
178 | (gnus-group-real-name group) to-server))) | |
179 | (gnus-info-set-group info new-name) | |
180 | (gnus-sethash new-name (gnus-gethash group gnus-newsrc-hashtb) | |
181 | gnus-newsrc-hashtb) | |
182 | (gnus-sethash group nil gnus-newsrc-hashtb)))) | |
183 | ||
184 | (provide 'gnus-move) | |
185 | ||
ab5796a9 | 186 | ;;; arch-tag: 503742b8-7d66-4d79-bb31-4a698070707b |
eec82323 | 187 | ;;; gnus-move.el ends here |