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;;; emms-history.el -- save playlist when exit emacs
;; Copyright 2006 Ye Wenbin
;;
;; Author: wenbinye@163.com
;; Keywords:
;; X-URL: not distributed yet
;; 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, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
;;; Commentary:
;; Save playlists when exit emacs.
;; Next time use M-x emms-history-load to load saved playlist
;; Put this file into your load-path and the following into your ~/.emacs:
;; (require 'emms-history)
;;; Code:
(provide 'emms-history)
(require 'emms)
(eval-when-compile
(require 'cl))
(defvar emms-history-file "~/.emacs.d/.emms-history"
"File to save playlists")
(defun emms-history-save ()
"Save all playlists that open in this emacs session when exit. Use
`emms-history-load' to load saved playlists."
(interactive)
(when (stringp emms-history-file)
(let ((oldbuf emms-playlist-buffer)
emms-playlist-buffer playlists)
(save-excursion
(dolist (buf (emms-playlist-buffer-list))
(set-buffer buf)
(when (> (buffer-size) 0) ; make sure there is track in the buffer
(setq emms-playlist-buffer buf
playlists
(cons
(list (buffer-name)
(or
(and emms-playlist-selected-marker
(marker-position emms-playlist-selected-marker))
(point-min))
(save-excursion
(widen)
(nreverse
(emms-playlist-tracks-in-region (point-min)
(point-max)))))
playlists))))
(with-temp-buffer
(insert "(\n;; active playlist\n")
(prin1 (buffer-name oldbuf) (current-buffer))
(insert "\n;; playlists: ((BUFFER_NAME SELECT_POSITION TRACKS) ...)\n")
(prin1 playlists (current-buffer))
(insert "\n;; play method\n")
(prin1 `((emms-repeat-track . ,emms-repeat-track)
(emms-repeat-playlist . ,emms-repeat-playlist))
(current-buffer))
(insert "\n)")
(write-file emms-history-file))))))
(add-hook 'kill-emacs-hook 'emms-history-save)
(defun emms-history-load ()
(interactive)
(when (and (stringp emms-history-file)
(file-exists-p emms-history-file))
(let (history buf)
(with-temp-buffer
(insert-file-contents emms-history-file)
(setq history (read (current-buffer)))
(dolist (playlist (cadr history))
(with-current-buffer (emms-playlist-new (car playlist))
(setq emms-playlist-buffer (current-buffer))
(if (string= (car playlist) (car history))
(setq buf (current-buffer)))
(mapc 'emms-playlist-insert-track
(nth 2 playlist))
(ignore-errors
(emms-playlist-select (cadr playlist)))))
(setq emms-playlist-buffer buf)
(dolist (method (nth 2 history))
(set (car method) (cdr method)))
(ignore-errors
(emms-start))))))
;;; emms-history.el ends here
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