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;; jabber-truncate.el - cleanup top lines in chatbuffers
;; Copyright (C) 2007 - Kirill A. Korinskiy - catap@catap.ru
;; This file is a part of jabber.el.
;; This program 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 2 of the License, or
;; (at your option) any later version.
;; This program 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 this program; if not, write to the Free Software
;; Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
(require 'jabber-chat)
(require 'jabber-alert)
(require 'cl)
(defvar jabber-log-lines-to-keep 1000
"Maximum number of lines in chat buffer")
(defun jabber-truncate-top (buffer &optional ewoc)
"Clean old history from a chat BUFFER.
Optional EWOC is ewoc-widget to work. Default is jabber-chat-ewoc
`jabber-log-lines-to-keep' specifies the number of lines to
keep.
Note that this might interfer with
`jabber-chat-display-more-backlog': you ask for more history, you
get it, and then it just gets deleted."
(interactive)
(let* ((inhibit-read-only t)
(work-ewoc (if ewoc ewoc jabber-chat-ewoc))
(delete-before
;; go back one node, to make this function "idempotent"
(ewoc-prev
work-ewoc
(ewoc-locate work-ewoc
(save-excursion
(set-buffer buffer)
(goto-char (point-max))
(forward-line (- jabber-log-lines-to-keep))
(point))))))
(while delete-before
(setq delete-before
(prog1
(ewoc-prev work-ewoc delete-before)
(ewoc-delete work-ewoc delete-before))))))
(defun jabber-truncate-muc (nick group buffer text proposed-alert)
"Clean old history from MUC buffers.
`jabber-log-lines-to-keep' specifies the number of lines to
keep."
(jabber-truncate-top buffer))
(defun jabber-truncate-chat (from buffer text proposed-alert)
"Clean old history from chat buffers.
`jabber-log-lines-to-keep' specifies the number of lines to
keep.
Note that this might interfer with
`jabber-chat-display-more-backlog': you ask for more history, you
get it, and then it just gets deleted."
(jabber-truncate-top buffer))
(provide 'jabber-truncate)
;; arch-tag: 3d1e3428-f598-11db-a314-000a95c2fcd0
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