1;;; gnus-move.el --- commands for moving Gnus from one server to another 2 3;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 4;; 2005, 2006, 2007 Free Software Foundation, Inc. 5 6;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> 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 23;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, 24;; Boston, MA 02110-1301, USA. 25 26;;; Commentary: 27 28;;; Code: 29 30(eval-when-compile (require 'cl)) 31 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. 44Update 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) 50 (mail-sources nil) 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 67 to-article to-reads to-marks article 68 act-articles) 69 (gnus-message 7 "Translating %s..." group) 70 (when (gnus-request-group group nil to-server) 71 (setq to-active (gnus-parse-active) 72 hashtb (gnus-make-hashtable 1024) 73 act-articles (gnus-uncompress-range to-active)) 74 ;; Fetch the headers from the `to-server'. 75 (when (and to-active 76 act-articles 77 (setq type (gnus-retrieve-headers 78 act-articles 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) 96 (gnus-uncompress-range 97 (gnus-active group)) 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") 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))) 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 138 (gnus-compress-sequence 139 (and (setq to-reads (delq nil to-reads)) 140 (sort to-reads '<)) 141 t) 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 158 (setcdr (car a) (gnus-compress-sequence 159 (and (cdar a) (sort (cdar a) '<)))) 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) 185 186;;; arch-tag: 503742b8-7d66-4d79-bb31-4a698070707b 187;;; gnus-move.el ends here 188