Add emms-mark and emms-history

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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