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;;; emms-mark.el.gz ---
;; Copyright 2006 Ye Wenbin
;;
;; Author: wenbinye@163.com
;; Time-stamp: <Ye Wenbin 2006-11-21 17:02:28>
;; Version: $Id: emms-mark.el,v 0.0 <2006-11-21 14:06:38> ywb Exp $
;; 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:
;; Provide mark operation to tracks
;; Put this file into your load-path and the following into your ~/.emacs:
;; (require 'emms-mark)
;;; Code:
(provide 'emms-mark)
(require 'emms)
(eval-when-compile
(require 'cl))
;;{{{ set new description-function
(defun emms-mark-track-description (track)
"Return a description of the current track."
(concat " " ; for mark char
(let ((artist (emms-track-get track 'info-artist))
(title (emms-track-get track 'info-title)))
(if (and artist title)
(format "%s - %s" artist title)
(emms-track-simple-description track)))))
(setq emms-track-description-function 'emms-mark-track-description)
;;}}}
;;{{{ functions to mark tracks
(defvar emms-mark-char ?*)
(defvar emms-mark-face-alist
'((?* . font-lock-warning-face)
(?\040 . emms-playlist-track-face)))
(defun emms-mark-track (&optional arg)
(interactive "p")
(or arg (setq arg 1))
(let ((face (assoc-default emms-mark-char emms-mark-face-alist))
buffer-read-only track)
(save-excursion
(beginning-of-line)
(while (and (not (eobp))
(> arg 0))
(setq track (get-text-property (point) 'emms-track))
(delete-char 1)
(insert (propertize (string emms-mark-char)
'emms-track track))
(backward-char 1)
(put-text-property (point) (progn (forward-line 1) (point))
'face face)
(setq arg (1- arg))))))
(defun emms-mark-unmark-track (&optional arg)
(interactive "p")
(let ((emms-mark-char ?\040))
(emms-mark-track arg)))
(defun emms-mark-forward (arg)
(interactive "p")
(emms-mark-track arg)
(forward-line arg))
(defun emms-mark-unmark-forward (arg)
(interactive "p")
(emms-mark-unmark-track arg)
(forward-line arg))
(defun emms-mark-all ()
(interactive)
(save-excursion
(goto-char (point-min))
(emms-mark-track (count-lines (point-min) (point-max)))))
(defun emms-mark-unmark-all ()
(interactive)
(emms-mark-do-with-marked-track 'emms-mark-unmark-track))
(defun emms-mark-regexp (regexp)
(interactive "sMark track match: ")
(save-excursion
(goto-char (point-min))
(while (re-search-forward regexp nil t)
(emms-mark-track 1)
(forward-line 1))))
(defun emms-mark-unmark-regexp (regexp)
(interactive "sUnmark track match: ")
(let ((emms-mark-char ?\040))
(emms-mark-regexp regexp)))
(defun emms-mark-toggle ()
(interactive)
(save-excursion
(goto-char (point-min))
(let (buffer-read-only)
(while (not (eobp))
(if (eq ?\040 (following-char))
(emms-mark-track)
(emms-mark-unmark-track))
(forward-line 1)))))
;;}}}
;;{{{ functions to operate marked tracks
(defun emms-mark-do-with-marked-track (func)
(let ((regexp (format "^[%c]" emms-mark-char)))
(save-excursion
(goto-char (point-min))
(while (re-search-forward regexp nil t)
(backward-char 1) ; move to beginning of line
(funcall func)))))
(defun emms-mark-mapcar-marked-track (func)
(let (result)
(save-excursion
(goto-char (point-min))
(while (re-search-forward "^[*]" nil t)
(backward-char 1) ; move to beginning of line
(setq result (cons (funcall func) result)))
(nreverse result))))
(defun emms-mark-delete-marked-tracks ()
(interactive)
(emms-with-inhibit-read-only-t
(emms-mark-do-with-marked-track
(lambda nil (delete-region (point)
(progn (forward-line 1) (point)))))))
(defun emms-mark-kill-marked-tracks ()
(interactive)
(let (tracks buffer-read-only)
(emms-mark-do-with-marked-track
(lambda nil
(setq tracks
(concat tracks
(delete-and-extract-region (point)
(progn (forward-line 1) (point)))))))
(kill-new tracks)))
(defun emms-mark-copy-marked-tracks ()
(interactive)
(let (tracks)
(emms-mark-do-with-marked-track
(lambda nil
(setq tracks
(concat tracks
(buffer-substring (point)
(progn (forward-line 1) (point)))))))
(kill-new tracks)))
;;}}}
(let ((map emms-playlist-mode-map))
(define-key map "m" 'emms-mark-forward)
(define-key map "u" 'emms-mark-unmark-forward)
(define-key map "U" 'emms-mark-unmark-all)
(define-key map "t" 'emms-mark-toggle)
(define-key map "%m" 'emms-mark-regexp)
(define-key map "%u" 'emms-mark-unmark-regexp))
;;; emms-mark.el ends here
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