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187 lines
6.2 KiB
EmacsLisp
187 lines
6.2 KiB
EmacsLisp
;;; gnus-move.el --- commands for moving Gnus from one server to another
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;; Copyright (C) 1996, 1997, 1998, 1999, 2000
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;; Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: news
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation; either version 2, or (at your option)
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;; any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Commentary:
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;;; Code:
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(eval-when-compile (require 'cl))
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(require 'gnus)
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(require 'gnus-start)
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(require 'gnus-int)
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(require 'gnus-range)
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;;;
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;;; Moving by comparing Message-ID's.
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;;;
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;;;###autoload
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(defun gnus-change-server (from-server to-server)
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"Move from FROM-SERVER to TO-SERVER.
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Update the .newsrc.eld file to reflect the change of nntp server."
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(interactive
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(list gnus-select-method (gnus-read-method "Move to method: ")))
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;; First start Gnus.
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(let ((gnus-activate-level 0)
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(mail-sources nil)
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(nnmail-spool-file nil))
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(gnus))
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(save-excursion
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;; Go through all groups and translate.
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(let ((newsrc gnus-newsrc-alist)
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(nntp-nov-gap nil)
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info)
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(while (setq info (pop newsrc))
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(when (gnus-group-native-p (gnus-info-group info))
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(gnus-move-group-to-server info from-server to-server))))))
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(defun gnus-move-group-to-server (info from-server to-server)
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"Move group INFO from FROM-SERVER to TO-SERVER."
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(let ((group (gnus-info-group info))
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to-active hashtb type mark marks
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to-article to-reads to-marks article
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act-articles)
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(gnus-message 7 "Translating %s..." group)
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(when (gnus-request-group group nil to-server)
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(setq to-active (gnus-parse-active)
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hashtb (gnus-make-hashtable 1024)
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act-articles (gnus-uncompress-range to-active))
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;; Fetch the headers from the `to-server'.
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(when (and to-active
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act-articles
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(setq type (gnus-retrieve-headers
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act-articles
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group to-server)))
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;; Convert HEAD headers. I don't care.
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(when (eq type 'headers)
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(nnvirtual-convert-headers))
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;; Create a mapping from Message-ID to article number.
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(set-buffer nntp-server-buffer)
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(goto-char (point-min))
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(while (looking-at
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"^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t")
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(gnus-sethash
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(buffer-substring (match-beginning 1) (match-end 1))
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(read (current-buffer))
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hashtb)
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(forward-line 1))
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;; Then we read the headers from the `from-server'.
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(when (and (gnus-request-group group nil from-server)
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(gnus-active group)
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(gnus-uncompress-range
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(gnus-active group))
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(setq type (gnus-retrieve-headers
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(gnus-uncompress-range
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(gnus-active group))
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group from-server)))
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;; Make it easier to map marks.
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(let ((mark-lists (gnus-info-marks info))
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ms type m)
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(while mark-lists
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(setq type (caar mark-lists)
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ms (gnus-uncompress-range (cdr (pop mark-lists))))
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(while ms
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(if (setq m (assq (car ms) marks))
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(setcdr m (cons type (cdr m)))
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(push (list (car ms) type) marks))
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(pop ms))))
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;; Convert.
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(when (eq type 'headers)
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(nnvirtual-convert-headers))
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;; Go through the headers and map away.
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(set-buffer nntp-server-buffer)
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(goto-char (point-min))
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(while (looking-at
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"^[0-9]+\t[^\t]*\t[^\t]*\t[^\t]*\t\\([^\t]*\\)\t")
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(when (setq to-article
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(gnus-gethash
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(buffer-substring (match-beginning 1) (match-end 1))
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hashtb))
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;; Add this article to the list of read articles.
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(push to-article to-reads)
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;; See if there are any marks and then add them.
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(when (setq mark (assq (read (current-buffer)) marks))
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(setq marks (delq mark marks))
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(setcar mark to-article)
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(push mark to-marks))
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(forward-line 1)))
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;; Now we know what the read articles are and what the
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;; article marks are. We transform the information
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;; into the Gnus info format.
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(setq to-reads
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(gnus-range-add
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(gnus-compress-sequence
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(and (setq to-reads (delq nil to-reads))
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(sort to-reads '<))
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t)
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(cons 1 (1- (car to-active)))))
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(gnus-info-set-read info to-reads)
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;; Do the marks. I'm sure y'all understand what's
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;; going on down below, so I won't bother with any
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;; further comments. <duck>
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(let ((mlists gnus-article-mark-lists)
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lists ms a)
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(while mlists
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(push (list (cdr (pop mlists))) lists))
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(while (setq ms (pop marks))
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(setq article (pop ms))
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(while ms
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(setcdr (setq a (assq (pop ms) lists))
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(cons article (cdr a)))))
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(setq a lists)
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(while a
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(setcdr (car a) (gnus-compress-sequence
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(and (cdar a) (sort (cdar a) '<))))
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(pop a))
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(gnus-info-set-marks info lists t)))))
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(gnus-message 7 "Translating %s...done" group)))
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(defun gnus-group-move-group-to-server (info from-server to-server)
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"Move the group on the current line from FROM-SERVER to TO-SERVER."
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(interactive
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(let ((info (gnus-get-info (gnus-group-group-name))))
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(list info (gnus-find-method-for-group (gnus-info-group info))
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(gnus-read-method (format "Move group %s to method: "
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(gnus-info-group info))))))
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(save-excursion
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(gnus-move-group-to-server info from-server to-server)
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;; We have to update the group info to point use the right server.
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(gnus-info-set-method info to-server t)
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;; We also have to change the name of the group and stuff.
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(let* ((group (gnus-info-group info))
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(new-name (gnus-group-prefixed-name
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(gnus-group-real-name group) to-server)))
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(gnus-info-set-group info new-name)
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(gnus-sethash new-name (gnus-gethash group gnus-newsrc-hashtb)
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gnus-newsrc-hashtb)
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(gnus-sethash group nil gnus-newsrc-hashtb))))
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(provide 'gnus-move)
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;;; arch-tag: 503742b8-7d66-4d79-bb31-4a698070707b
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;;; gnus-move.el ends here
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