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eec82323 | 1 | ;;; gnus-move.el --- commands for moving Gnus from one server to another |
e84b4b86 | 2 | |
b6c2d8c6 | 3 | ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, |
114f9c96 | 4 | ;; 2005, 2006, 2007, 2008, 2009, 2010 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 | ||
5e809f55 | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
eec82323 | 12 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
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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 | |
5e809f55 | 18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
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19 | ;; GNU General Public License for more details. |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
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23 | |
24 | ;;; Commentary: | |
25 | ||
26 | ;;; Code: | |
27 | ||
51bab999 RS |
28 | (eval-when-compile (require 'cl)) |
29 | ||
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30 | (require 'gnus) |
31 | (require 'gnus-start) | |
32 | (require 'gnus-int) | |
33 | (require 'gnus-range) | |
34 | ||
35 | ;;; | |
36 | ;;; Moving by comparing Message-ID's. | |
37 | ;;; | |
38 | ||
39 | ;;;###autoload | |
40 | (defun gnus-change-server (from-server to-server) | |
41 | "Move from FROM-SERVER to TO-SERVER. | |
42 | Update the .newsrc.eld file to reflect the change of nntp server." | |
43 | (interactive | |
44 | (list gnus-select-method (gnus-read-method "Move to method: "))) | |
45 | ||
46 | ;; First start Gnus. | |
47 | (let ((gnus-activate-level 0) | |
b890d447 | 48 | (mail-sources nil)) |
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49 | (gnus)) |
50 | ||
51 | (save-excursion | |
52 | ;; Go through all groups and translate. | |
01c52d31 MB |
53 | (let ((nntp-nov-gap nil)) |
54 | (dolist (info gnus-newsrc-alist) | |
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55 | (when (gnus-group-native-p (gnus-info-group info)) |
56 | (gnus-move-group-to-server info from-server to-server)))))) | |
57 | ||
58 | (defun gnus-move-group-to-server (info from-server to-server) | |
59 | "Move group INFO from FROM-SERVER to TO-SERVER." | |
60 | (let ((group (gnus-info-group info)) | |
61 | to-active hashtb type mark marks | |
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62 | to-article to-reads to-marks article |
63 | act-articles) | |
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64 | (gnus-message 7 "Translating %s..." group) |
65 | (when (gnus-request-group group nil to-server) | |
66 | (setq to-active (gnus-parse-active) | |
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67 | hashtb (gnus-make-hashtable 1024) |
68 | act-articles (gnus-uncompress-range to-active)) | |
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69 | ;; Fetch the headers from the `to-server'. |
70 | (when (and to-active | |
a8151ef7 | 71 | act-articles |
eec82323 | 72 | (setq type (gnus-retrieve-headers |
a8151ef7 | 73 | act-articles |
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74 | group to-server))) |
75 | ;; Convert HEAD headers. I don't care. | |
76 | (when (eq type 'headers) | |
77 | (nnvirtual-convert-headers)) | |
78 | ;; Create a mapping from Message-ID to article number. | |
79 | (set-buffer nntp-server-buffer) | |
80 | (goto-char (point-min)) | |
81 | (while (looking-at | |
82 | "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t") | |
83 | (gnus-sethash | |
84 | (buffer-substring (match-beginning 1) (match-end 1)) | |
85 | (read (current-buffer)) | |
86 | hashtb) | |
87 | (forward-line 1)) | |
88 | ;; Then we read the headers from the `from-server'. | |
89 | (when (and (gnus-request-group group nil from-server) | |
90 | (gnus-active group) | |
16409b0b GM |
91 | (gnus-uncompress-range |
92 | (gnus-active group)) | |
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93 | (setq type (gnus-retrieve-headers |
94 | (gnus-uncompress-range | |
95 | (gnus-active group)) | |
96 | group from-server))) | |
97 | ;; Make it easier to map marks. | |
98 | (let ((mark-lists (gnus-info-marks info)) | |
99 | ms type m) | |
100 | (while mark-lists | |
101 | (setq type (caar mark-lists) | |
102 | ms (gnus-uncompress-range (cdr (pop mark-lists)))) | |
103 | (while ms | |
104 | (if (setq m (assq (car ms) marks)) | |
105 | (setcdr m (cons type (cdr m))) | |
106 | (push (list (car ms) type) marks)) | |
107 | (pop ms)))) | |
108 | ;; Convert. | |
109 | (when (eq type 'headers) | |
110 | (nnvirtual-convert-headers)) | |
111 | ;; Go through the headers and map away. | |
112 | (set-buffer nntp-server-buffer) | |
113 | (goto-char (point-min)) | |
114 | (while (looking-at | |
115 | "^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t") | |
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116 | (when (setq to-article |
117 | (gnus-gethash | |
118 | (buffer-substring (match-beginning 1) (match-end 1)) | |
119 | hashtb)) | |
120 | ;; Add this article to the list of read articles. | |
121 | (push to-article to-reads) | |
122 | ;; See if there are any marks and then add them. | |
123 | (when (setq mark (assq (read (current-buffer)) marks)) | |
124 | (setq marks (delq mark marks)) | |
125 | (setcar mark to-article) | |
126 | (push mark to-marks)) | |
127 | (forward-line 1))) | |
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128 | ;; Now we know what the read articles are and what the |
129 | ;; article marks are. We transform the information | |
130 | ;; into the Gnus info format. | |
131 | (setq to-reads | |
132 | (gnus-range-add | |
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133 | (gnus-compress-sequence |
134 | (and (setq to-reads (delq nil to-reads)) | |
135 | (sort to-reads '<)) | |
136 | t) | |
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137 | (cons 1 (1- (car to-active))))) |
138 | (gnus-info-set-read info to-reads) | |
139 | ;; Do the marks. I'm sure y'all understand what's | |
140 | ;; going on down below, so I won't bother with any | |
141 | ;; further comments. <duck> | |
142 | (let ((mlists gnus-article-mark-lists) | |
143 | lists ms a) | |
144 | (while mlists | |
145 | (push (list (cdr (pop mlists))) lists)) | |
146 | (while (setq ms (pop marks)) | |
147 | (setq article (pop ms)) | |
148 | (while ms | |
149 | (setcdr (setq a (assq (pop ms) lists)) | |
150 | (cons article (cdr a))))) | |
151 | (setq a lists) | |
152 | (while a | |
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153 | (setcdr (car a) (gnus-compress-sequence |
154 | (and (cdar a) (sort (cdar a) '<)))) | |
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155 | (pop a)) |
156 | (gnus-info-set-marks info lists t))))) | |
157 | (gnus-message 7 "Translating %s...done" group))) | |
158 | ||
159 | (defun gnus-group-move-group-to-server (info from-server to-server) | |
160 | "Move the group on the current line from FROM-SERVER to TO-SERVER." | |
161 | (interactive | |
162 | (let ((info (gnus-get-info (gnus-group-group-name)))) | |
163 | (list info (gnus-find-method-for-group (gnus-info-group info)) | |
164 | (gnus-read-method (format "Move group %s to method: " | |
165 | (gnus-info-group info)))))) | |
166 | (save-excursion | |
167 | (gnus-move-group-to-server info from-server to-server) | |
168 | ;; We have to update the group info to point use the right server. | |
169 | (gnus-info-set-method info to-server t) | |
170 | ;; We also have to change the name of the group and stuff. | |
171 | (let* ((group (gnus-info-group info)) | |
172 | (new-name (gnus-group-prefixed-name | |
173 | (gnus-group-real-name group) to-server))) | |
174 | (gnus-info-set-group info new-name) | |
01c52d31 | 175 | (gnus-sethash new-name (gnus-group-entry group) gnus-newsrc-hashtb) |
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176 | (gnus-sethash group nil gnus-newsrc-hashtb)))) |
177 | ||
178 | (provide 'gnus-move) | |
179 | ||
cbee283d | 180 | ;; arch-tag: 503742b8-7d66-4d79-bb31-4a698070707b |
eec82323 | 181 | ;;; gnus-move.el ends here |