;;; gnus-move.el --- commands for moving Gnus from one server to another ;; Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, ;; 2005, 2006, 2007, 2008 Free Software Foundation, Inc. ;; Author: Lars Magne Ingebrigtsen ;; 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 3, 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., 51 Franklin Street, Fifth Floor, ;; Boston, MA 02110-1301, 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. (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