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[ELPA-diffs] /srv/bzr/emacs/elpa r174: * ampc: New package.
|
From: |
Chong Yidong |
|
Subject: |
[ELPA-diffs] /srv/bzr/emacs/elpa r174: * ampc: New package. |
|
Date: |
Sat, 11 Feb 2012 21:48:24 +0800 |
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User-agent: |
Bazaar (2.3.1) |
------------------------------------------------------------
revno: 174
author: Christopher Schmidt <address@hidden>
committer: Chong Yidong <address@hidden>
branch nick: elpa
timestamp: Sat 2012-02-11 21:48:24 +0800
message:
* ampc: New package.
added:
packages/ampc/
packages/ampc/ampc.el
=== added directory 'packages/ampc'
=== added file 'packages/ampc/ampc.el'
--- a/packages/ampc/ampc.el 1970-01-01 00:00:00 +0000
+++ b/packages/ampc/ampc.el 2012-02-11 13:48:24 +0000
@@ -0,0 +1,1665 @@
+;;; ampc.el --- Asynchronous Music Player Controller
+
+;; Copyright (C) 2011-2012 Free Software Foundation, Inc.
+
+;; Author: Christopher Schmidt <address@hidden>
+;; Maintainer: Christopher Schmidt <address@hidden>
+;; Version: 0.1
+;; Created: 2011-12-06
+;; Keywords: mpc
+;; Compatibility: GNU Emacs: 24.x
+
+;; This file is part of GNU Emacs.
+
+;; 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 3 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, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;; * description
+;; ampc is a controller for the Music Player Daemon.
+
+;;; ** installation
+;; If you use GNU ELPA, install ampc via M-x package-list-packages RET or
+;; (package-install 'ampc). Otherwise, grab this file and put it somewhere in
+;; your load-path or add the directory the file is in to it, e.g.:
+;;
+;; (add-to-list 'load-path "~/.emacs.d/ampc")
+;;
+;; Then add one autoload definition:
+;;
+;; (autoload 'ampc "ampc" nil t)
+;;
+;; Optionally bind a key to this function, e.g.:
+;;
+;; (global-set-key (kbd "<f9>") 'ampc)
+
+;;; ** usage
+;; To invoke ampc, call the command `ampc', e.g. via M-x ampc RET. Once ampc
is
+;; connected to the daemon, it creates its window configuration in the selected
+;; window. To make ampc use the full frame rather than the selected window,
+;; customize `ampc-use-full-frame'.
+;;
+;; ampc offers three independent views which expose different parts of the user
+;; interface. The current playlist view, the default view at startup, may be
+;; accessed using the `J' (that is `S-j') key. The playlist view may be
+;; accessed using the `K' key. The outputs view may be accessed using the `L'
+;; key.
+
+;;; *** current playlist view
+;; The playlist view should look like this
+;;
+;; .........................
+;; . 1 . 3 . 4 . 5 .
+;; .......... . . .
+;; . 2 . . . .
+;; . . . . .
+;; . . . . .
+;; . ................
+;; . . 6 .
+;; . . .
+;; .........................
+;;
+;; Window one exposes basic information about the daemon, such as the current
+;; state (stop/play/pause), the song currently playing, or the volume.
+;;
+;; All windows, except the status window, contain a tabular list of items.
Each
+;; item may be selected/marked. There may be multiple selections.
+;;
+;; To mark an entry, move the point to the entry and press `m' (ampc-mark). To
+;; unmark an entry, press `u' (ampc-unmark). To unmark all entries, press `U'
+;; (ampc-unmark-all). To toggle marks, press `t' (ampc-toggle-marks). To
+;; navigate to the next entry, press `n' (ampc-next-line). Analogous, pressing
+;; `p' (ampc-previous-line) moves the point to the previous entry.
+;;
+;; Window two shows the current playlist. The song that is currently played by
+;; the daemon, if any, is highlighted. To delete the selected songs from the
+;; playlist, press `d' (ampc-delete). To move the selected songs up, press
+;; `<up>' (ampc-up). Analogous, press `<down>' (ampc-down) to move the
selected
+;; songs down.
+;;
+;; Windows three to five are tag browsers. You use them to narrow the song
+;; database to certain songs. Think of tag browsers as filters, analogous to
+;; piping `grep' outputs through additional `grep' filters. The property of
the
+;; songs that is filtered is displayed in the header line of the window.
+;;
+;; Window six shows the songs that match the filters defined by windows three
to
+;; five. To add the selected song to the playlist, press `a' (ampc-add). This
+;; key binding works in tag browsers as well. Calling ampc-add in a tag
browser
+;; adds all songs filtered up to the selected browser to the playlist.
+
+;;; *** playlist view
+;; The playlist view resembles the current playlist view. The window, which
+;; exposes the playlist content, is split, though. The bottom half shows a
list
+;; of stored playlists. The upper half does not expose the current playlist
+;; anymore. Instead, the content of the selected (stored) playlist is shown.
+;; All commands that used to work in the current playlist view and modify the
+;; current playlist now modify the selected (stored) playlist. The list of
+;; stored playlists is the only view in ampc that may have only one marked
+;; entry.
+
+;;; *** outputs view
+;; The outputs view contains a single list which shows the configured outputs
of
+;; mpd. To toggle the enabled property of the selected outputs, press `a'
+;; (ampc-toggle-output-enabled).
+
+;;; *** global keys
+;; ampc defines the following global keys, which may be used in every window
+;; associated with ampc:
+;;
+;; `k' (ampc-toggle-play): Toggle play state. If mpd does not play a song
+;; already, start playing the song at point if the current buffer is the
+;; playlist buffer, otherwise start at the beginning of the playlist. With
+;; prefix argument 4, stop player rather than pause if applicable.
+;;
+;; `l' (ampc-next): Play next song.
+;; `j' (ampc-previous): Play previous song
+;;
+;; `c' (ampc-clear): Clear playlist.
+;; `s' (ampc-shuffle): Shuffle playlist.
+;;
+;; `S' (ampc-store): Store playlist.
+;; `O' (ampc-load): Load selected playlist in the current playlist.
+;; `R' (ampc-rename-playlist): Rename selected playlist.
+;; `D' (ampc-delete-playlist): Delete selected playlist.
+;;
+;; `y' (ampc-increase-volume): Increase volume.
+;; `M-y' (ampc-decrease-volume): Decrease volume.
+;; `h' (ampc-increase-crossfade): Increase crossfade.
+;; `M-h' (ampc-decrease-crossfade): Decrease crossfade.
+;;
+;; `e' (ampc-toggle-repeat): Toggle repeat state.
+;; `r' (ampc-toggle-random): Toggle random state.
+;; `f' (ampc-toggle-consume): Toggle consume state.
+;;
+;; `P' (ampc-goto-current-song): Select the current playlist window and move
+;; point to the current song.
+;;
+;; `T' (ampc-trigger-update): Trigger a database update.
+;; `q' (ampc-quit): Quit ampc.
+
+;;; Code:
+;;; * code
+(eval-when-compile
+ (require 'easymenu)
+ (require 'cl))
+(require 'network-stream)
+(require 'avl-tree)
+
+;;; ** declarations
+;;; *** variables
+(defgroup ampc ()
+ "Asynchronous client for the Music Player Daemon."
+ :prefix "ampc-"
+ :group 'multimedia
+ :group 'applications)
+
+;;; *** customs
+(defcustom ampc-debug nil
+ "Non-nil means log communication between ampc and MPD."
+ :type 'boolean)
+(defcustom ampc-use-full-frame nil
+ "If non-nil, ampc will use the entire Emacs screen."
+ :type 'boolean)
+(defcustom ampc-truncate-lines t
+ "If non-nil, truncate lines in ampc buffers."
+ :type 'boolean)
+
+;;; **** hooks
+(defcustom ampc-before-startup-hook nil
+ "A hook called before startup.
+This hook is called as the first thing when ampc is started."
+ :type 'hook)
+(defcustom ampc-connected-hook nil
+ "A hook called after ampc connected to MPD."
+ :type 'hook)
+(defcustom ampc-quit-hook nil
+ "A hook called when exiting ampc."
+ :type 'hook)
+
+;;; *** faces
+(defface ampc-mark-face '((t (:inherit font-lock-constant-face)))
+ "Face of the mark.")
+(defface ampc-marked-face '((t (:inherit warning)))
+ "Face of marked entries.")
+(defface ampc-face '((t (:inerhit default)))
+ "Face of unmarked entries.")
+(defface ampc-current-song-mark-face '((t (:inherit region)))
+ "Face of mark of the current song.")
+(defface ampc-current-song-marked-face '((t (:inherit region)))
+ "Face of the current song if marked.")
+
+;;; *** internal variables
+(defvar ampc-views
+ (let ((rs '(1.0 vertical
+ (0.7 horizontal
+ (0.33 tag :tag "Genre" :id 1)
+ (0.33 tag :tag "Artist" :id 2)
+ (1.0 tag :tag "Album" :id 3))
+ (1.0 song :properties (("Track" :title "#")
+ ("Title" :offset 6)
+ ("Time" :offset 26)))))
+ (pl-prop '(("Title")
+ ("Artist" :offset 20)
+ ("Album" :offset 40)
+ ("Time" :offset 60))))
+ `((,(kbd "J")
+ horizontal
+ (0.4 vertical
+ (6 status)
+ (1.0 current-playlist :properties ,pl-prop))
+ ,rs)
+ (,(kbd "K")
+ horizontal
+ (0.4 vertical
+ (6 status)
+ (1.0 vertical
+ (0.8 playlist :properties ,pl-prop)
+ (1.0 playlists)))
+ ,rs)
+ (,(kbd "L")
+ outputs :properties (("outputname" :title "Name")
+ ("outputenabled" :title "Enabled" :offset 10))))))
+
+(defvar ampc-connection nil)
+(defvar ampc-outstanding-commands nil)
+
+(defvar ampc-working-timer nil)
+(defvar ampc-yield nil)
+
+(defvar ampc-buffers nil)
+(defvar ampc-buffers-unordered nil)
+(defvar ampc-all-buffers nil)
+
+(defvar ampc-type nil)
+(make-variable-buffer-local 'ampc-type)
+(defvar ampc-dirty nil)
+(make-variable-buffer-local 'ampc-dirty)
+
+(defvar ampc-internal-db nil)
+(defvar ampc-status nil)
+
+;;; *** mode maps
+(defvar ampc-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (define-key map (kbd "k") 'ampc-toggle-play)
+ (define-key map (kbd "l") 'ampc-next)
+ (define-key map (kbd "j") 'ampc-previous)
+ (define-key map (kbd "c") 'ampc-clear)
+ (define-key map (kbd "s") 'ampc-shuffle)
+ (define-key map (kbd "S") 'ampc-store)
+ (define-key map (kbd "O") 'ampc-load)
+ (define-key map (kbd "R") 'ampc-rename-playlist)
+ (define-key map (kbd "D") 'ampc-delete-playlist)
+ (define-key map (kbd "y") 'ampc-increase-volume)
+ (define-key map (kbd "M-y") 'ampc-decrease-volume)
+ (define-key map (kbd "h") 'ampc-increase-crossfade)
+ (define-key map (kbd "M-h") 'ampc-decrease-crossfade)
+ (define-key map (kbd "e") 'ampc-toggle-repeat)
+ (define-key map (kbd "r") 'ampc-toggle-random)
+ (define-key map (kbd "f") 'ampc-toggle-consume)
+ (define-key map (kbd "P") 'ampc-goto-current-song)
+ (define-key map (kbd "q") 'ampc-quit)
+ (define-key map (kbd "T") 'ampc-trigger-update)
+ (loop for view in ampc-views
+ do (define-key map (car view)
+ `(lambda ()
+ (interactive)
+ (ampc-configure-frame ',(cdr view)))))
+ map))
+
+(defvar ampc-item-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (define-key map (kbd "m") 'ampc-mark)
+ (define-key map (kbd "u") 'ampc-unmark)
+ (define-key map (kbd "U") 'ampc-unmark-all)
+ (define-key map (kbd "n") 'ampc-next-line)
+ (define-key map (kbd "p") 'ampc-previous-line)
+ map))
+
+(defvar ampc-current-playlist-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (define-key map (kbd "<return>") 'ampc-play-this)
+ map))
+
+(defvar ampc-playlist-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (define-key map (kbd "t") 'ampc-toggle-marks)
+ (define-key map (kbd "d") 'ampc-delete)
+ (define-key map (kbd "<up>") 'ampc-up)
+ (define-key map (kbd "<down>") 'ampc-down)
+ map))
+
+(defvar ampc-playlists-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (define-key map (kbd "l") 'ampc-load)
+ (define-key map (kbd "r") 'ampc-rename-playlist)
+ (define-key map (kbd "d") 'ampc-delete-playlist)
+ map))
+
+(defvar ampc-tag-song-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (define-key map (kbd "t") 'ampc-toggle-marks)
+ (define-key map (kbd "a") 'ampc-add)
+ map))
+
+(defvar ampc-outputs-mode-map
+ (let ((map (make-sparse-keymap)))
+ (suppress-keymap map)
+ (define-key map (kbd "t") 'ampc-toggle-marks)
+ (define-key map (kbd "a") 'ampc-toggle-output-enabled)
+ map))
+
+;;; **** menu
+(easy-menu-define ampc-menu ampc-mode-map
+ "Main Menu for ampc"
+ '("ampc"
+ ["Play" ampc-toggle-play
+ :visible (and ampc-status
+ (not (equal (cdr (assoc "state" ampc-status))"play")))]
+ ["Pause" ampc-toggle-play
+ :visible (and ampc-status
+ (equal (cdr (assoc "state" ampc-status)) "play"))]
+ "--"
+ ["Clear playlist" ampc-clear]
+ ["Shuffle playlist" ampc-shuffle]
+ ["Store playlist" ampc-store]
+ ["Queue Playlist" ampc-load :visible (ampc-playlist)]
+ ["Rename Playlist" ampc-rename-playlist :visible (ampc-playlist)]
+ ["Delete Playlist" ampc-delete-playlist :visible (ampc-playlist)]
+ "--"
+ ["Increase volume" ampc-increase-volume]
+ ["Decrease volume" ampc-decrease-volume]
+ ["Increase crossfade" ampc-increase-crossfade]
+ ["Decrease crossfade" ampc-decrease-crossfade]
+ ["Toggle repeat" ampc-toggle-repeat]
+ ["Toggle random" ampc-toggle-random]
+ ["Toggle consume" ampc-toggle-consume]
+ "--"
+ ["Trigger update" ampc-trigger-update]
+ ["Quit" ampc-quit]))
+
+(easy-menu-define ampc-selection-menu ampc-item-mode-map
+ "Selection menu for ampc"
+ '("ampc Mark"
+ ["Add to playlist" ampc-add
+ :visible (not (eq (car ampc-type) 'outputs))]
+ ["Toggle enabled" ampc-toggle-output-enabled
+ :visible (eq (car ampc-type) 'outputs)]
+ "--"
+ ["Next line" ampc-next-line]
+ ["Previous line" ampc-previous-line]
+ ["Mark" ampc-mark]
+ ["Unmark" ampc-unmark]
+ ["Unmark all" ampc-unmark-all]
+ ["Toggle marks" ampc-toggle-marks
+ :visible (not (eq (car ampc-type) 'playlists))]))
+
+;;; ** code
+;;; *** macros
+(defmacro ampc-with-buffer (type &rest body)
+ (declare (indent 1) (debug t))
+ `(let* ((type- ,type)
+ (b (loop for b in ampc-buffers
+ when (with-current-buffer b
+ (cond ((windowp type-)
+ (eq (window-buffer type-)
+ (current-buffer)))
+ ((symbolp type-)
+ (eq (car ampc-type) type-))
+ (t
+ (equal ampc-type type-))))
+ return b
+ end)))
+ (when b
+ (with-current-buffer b
+ (let ((buffer-read-only))
+ ,@(if (eq (car body) 'no-se)
+ (cdr body)
+ `((save-excursion
+ (goto-char (point-min))
+ ,@body))))))))
+
+(defmacro ampc-fill-skeleton (tag &rest body)
+ (declare (indent 1) (debug t))
+ `(let ((tag- ,tag)
+ (data-buffer (current-buffer)))
+ (ampc-with-buffer tag-
+ no-se
+ (let ((point (point)))
+ (goto-char (point-min))
+ (loop until (eobp)
+ do (put-text-property (point) (1+ (point)) 'updated t)
+ (forward-line))
+ (goto-char (point-min))
+ ,@body
+ (goto-char (point-min))
+ (loop until (eobp)
+ when (get-text-property (point) 'updated)
+ do (delete-region (point) (1+ (line-end-position)))
+ else
+ do (forward-line nil)
+ end)
+ (goto-char point)
+ (ampc-align-point))
+ (ampc-set-dirty nil)
+ (with-selected-window (if (windowp tag-) tag- (ampc-get-window tag-))
+ (recenter)))))
+
+(defmacro ampc-with-selection (arg &rest body)
+ (declare (indent 1) (debug t))
+ `(let ((arg- ,arg))
+ (if (and (not arg-)
+ (save-excursion
+ (goto-char (point-min))
+ (search-forward-regexp "^* " nil t)))
+ (loop initially (goto-char (point-min))
+ finally (ampc-align-point)
+ while (search-forward-regexp "^* " nil t)
+ for index from 0
+ do (save-excursion
+ ,@body))
+ (loop until (eobp)
+ for index from 0 to (1- (prefix-numeric-value arg-))
+ do (save-excursion
+ (goto-char (line-end-position))
+ ,@body)
+ until (ampc-next-line)))))
+
+;;; *** modes
+(define-derived-mode ampc-outputs-mode ampc-item-mode "ampc-o"
+ nil)
+
+(define-derived-mode ampc-tag-song-mode ampc-item-mode "ampc-ts"
+ nil)
+
+(define-derived-mode ampc-current-playlist-mode ampc-playlist-mode "ampc-cpl"
+ nil)
+
+(define-derived-mode ampc-playlist-mode ampc-item-mode "ampc-pl"
+ nil)
+
+(define-derived-mode ampc-playlists-mode ampc-item-mode "ampc-pls"
+ nil)
+
+(define-derived-mode ampc-item-mode ampc-mode ""
+ nil)
+
+(define-derived-mode ampc-mode fundamental-mode "ampc"
+ nil
+ (buffer-disable-undo)
+ (setf buffer-read-only t
+ truncate-lines ampc-truncate-lines
+ font-lock-defaults '((("^\\(\\*\\)\\(.*\\)$"
+ (1 'ampc-mark-face)
+ (2 'ampc-marked-face))
+ ("^ .*$" 0 'ampc-face))
+ t)))
+
+(define-minor-mode ampc-highlight-current-song-mode ""
+ nil
+ nil
+ nil
+ (funcall (if ampc-highlight-current-song-mode
+ 'font-lock-add-keywords
+ 'font-lock-remove-keywords)
+ nil
+ '((ampc-find-current-song
+ (1 'ampc-current-song-mark-face)
+ (2 'ampc-current-song-marked-face)))))
+
+;;; *** internal functions
+(defun ampc-add-impl (&optional data)
+ (cond ((null data)
+ (loop for d in (get-text-property (line-end-position) 'data)
+ do (ampc-add-impl d)))
+ ((avl-tree-p data)
+ (avl-tree-mapc (lambda (e) (ampc-add-impl (cdr e))) data))
+ ((stringp data)
+ (if (ampc-playlist)
+ (ampc-send-command 'playlistadd t (ampc-playlist) data)
+ (ampc-send-command 'add t data)))
+ (t
+ (loop for d in data
+ do (ampc-add-impl (cdr (assoc "file" d)))))))
+
+(defun* ampc-skip (N &aux (song (cdr-safe (assoc "song" ampc-status))))
+ (when song
+ (ampc-send-command 'play nil (max 0 (+ (string-to-number song) N)))))
+
+(defun* ampc-find-current-song
+ (limit &aux (point (point)) (song (cdr-safe (assoc "song" ampc-status))))
+ (when (and song
+ (<= (1- (line-number-at-pos (point)))
+ (setf song (string-to-number song)))
+ (>= (1- (line-number-at-pos limit)) song))
+ (goto-char (point-min))
+ (forward-line song)
+ (save-restriction
+ (narrow-to-region (max point (point)) (min limit (line-end-position)))
+ (search-forward-regexp "\\(?1:\\(\\`\\*\\)?\\)\\(?2:.*\\)$"))))
+
+(defun ampc-set-volume (arg func)
+ (when (or arg ampc-status)
+ (ampc-send-command
+ 'setvol
+ nil
+ (or (and arg (prefix-numeric-value arg))
+ (max (min (funcall func
+ (string-to-number
+ (cdr (assoc "volume" ampc-status)))
+ 5)
+ 100)
+ 0)))))
+
+(defun ampc-set-crossfade (arg func)
+ (when (or arg ampc-status)
+ (ampc-send-command
+ 'crossfade
+ nil
+ (or (and arg (prefix-numeric-value arg))
+ (max (funcall func
+ (string-to-number (cdr (assoc "xfade" ampc-status)))
+ 5)
+ 0)))))
+
+(defun* ampc-fix-pos (f &aux buffer-read-only)
+ (save-excursion
+ (move-beginning-of-line nil)
+ (let* ((data (get-text-property (+ 2 (point)) 'data))
+ (pos (assoc "Pos" data)))
+ (setf (cdr pos) (funcall f (cdr pos)))
+ (put-text-property (+ 2 (point))
+ (line-end-position)
+ 'data
+ data))))
+
+(defun* ampc-move-impl (up &aux (line (1- (line-number-at-pos))))
+ (when (or (and up (eq line 0))
+ (and (not up) (eq (1+ line) (line-number-at-pos (1-
(point-max))))))
+ (return-from ampc-move-impl t))
+ (save-excursion
+ (move-beginning-of-line nil)
+ (if (ampc-playlist)
+ (ampc-send-command 'playlistmove
+ nil
+ (ampc-playlist)
+ line
+ (funcall (if up '1- '1+)
+ line))
+ (ampc-send-command 'move nil line (funcall (if up '1- '1+) line)))
+ (unless up
+ (forward-line))
+ (unless (ampc-playlist)
+ (save-excursion
+ (forward-line -1)
+ (ampc-fix-pos '1+))
+ (ampc-fix-pos '1-))
+ (let ((buffer-read-only))
+ (transpose-lines 1)))
+ (if up
+ (ampc-align-point)
+ (ampc-next-line))
+ nil)
+
+(defun* ampc-move (up N &aux (point (point)))
+ (goto-char (if up (point-min) (point-max)))
+ (if (and (not N)
+ (funcall (if up 'search-forward-regexp 'search-backward-regexp)
+ "^* "
+ nil
+ t))
+ (loop until (ampc-move-impl up)
+ unless up
+ do (search-backward-regexp "^* " nil t)
+ end
+ until (not (funcall (if up
+ 'search-forward-regexp
+ 'search-backward-regexp)
+ "^* "
+ nil
+ t))
+ finally (unless up
+ (forward-char 2)))
+ (goto-char point)
+ (unless (eobp)
+ (unless N
+ (setf N 1))
+ (unless up
+ (unless (eq (1- N) 0)
+ (setf N (- (- (forward-line (1- N)) (1- N))))))
+ (loop repeat N
+ until (ampc-move-impl up)))))
+
+(defun ampc-toggle-state (state arg)
+ (when (or arg ampc-status)
+ (ampc-send-command
+ state
+ nil
+ (cond ((null arg)
+ (if (equal (cdr (assoc (symbol-name state) ampc-status)) "1")
+ 0
+ 1))
+ ((> (prefix-numeric-value arg) 0) 1)
+ (t 0)))))
+
+(defun ampc-playlist ()
+ (ampc-with-buffer 'playlists
+ (if (search-forward-regexp "^* \\(.*\\)$" nil t)
+ (match-string 1)
+ (unless (eobp)
+ (buffer-substring-no-properties
+ (+ (line-beginning-position) 2)
+ (line-end-position))))))
+
+(defun* ampc-mark-impl (select N &aux result buffer-read-only)
+ (when (eq (car ampc-type) 'playlists)
+ (assert (or (not select) (null N) (eq N 1)))
+ (ampc-with-buffer 'playlists
+ (loop while (search-forward-regexp "^\\* " nil t)
+ do (replace-match " " nil nil))))
+ (loop repeat (or N 1)
+ until (eobp)
+ do (move-beginning-of-line nil)
+ (delete-char 1)
+ (insert (if select "*" " "))
+ (setf result (ampc-next-line nil)))
+ (ampc-post-mark-change-update)
+ result)
+
+(defun ampc-post-mark-change-update ()
+ (ecase (car ampc-type)
+ ((current-playlist playlist outputs))
+ (playlists
+ (ampc-update-playlist))
+ ((song tag)
+ (loop for w in (ampc-windows)
+ with found
+ when found
+ do (with-current-buffer (window-buffer w)
+ (when (member (car ampc-type) '(song tag))
+ (ampc-set-dirty t)))
+ end
+ if (eq w (selected-window))
+ do (setf found t)
+ end)
+ (ampc-fill-tag-song))))
+
+(defun ampc-pad (alist)
+ (loop for (offset . data) in alist
+ with first = t
+ with current-offset = 0
+ when (<= current-offset offset)
+ when (and (not first) (eq (- offset current-offset) 0))
+ do (incf offset)
+ end
+ and concat (make-string (- offset current-offset) ? )
+ and do (setf current-offset offset)
+ else
+ concat " "
+ and do (incf current-offset)
+ end
+ concat data
+ do (setf current-offset (+ current-offset (length data))
+ first nil)))
+
+(defun ampc-update-header ()
+ (if (eq (car ampc-type) 'status)
+ (setf header-line-format nil)
+ (setf header-line-format
+ (concat
+ (make-string (floor (fringe-columns 'left t)) ? )
+ (ecase (car ampc-type)
+ (tag
+ (concat " " (plist-get (cdr ampc-type) :tag)))
+ (playlists
+ " Playlists")
+ (t
+ (ampc-pad (loop for p in (plist-get (cdr ampc-type) :properties)
+ collect `(,(or (plist-get (cdr p) :offset) 2) .
+ ,(or (plist-get (cdr p) :title)
+ (car p)))))))
+ (when ampc-dirty
+ " [ Updating... ]")))))
+
+(defun ampc-set-dirty (tag-or-dirty &optional dirty)
+ (if (or (null tag-or-dirty) (eq tag-or-dirty t))
+ (progn (setf ampc-dirty tag-or-dirty)
+ (ampc-update-header))
+ (loop for w in (ampc-windows)
+ do (with-current-buffer (window-buffer w)
+ (when (eq (car ampc-type) tag-or-dirty)
+ (ampc-set-dirty dirty))))))
+
+(defun ampc-update ()
+ (loop for b in ampc-buffers
+ do (with-current-buffer b
+ (when ampc-dirty
+ (ecase (car ampc-type)
+ (outputs
+ (ampc-send-command 'outputs))
+ (playlist
+ (ampc-update-playlist))
+ ((tag song)
+ (if ampc-internal-db
+ (ampc-fill-tag-song)
+ (ampc-send-command 'listallinfo)))
+ (status
+ (ampc-send-command 'status)
+ (ampc-send-command 'currentsong))
+ (playlists
+ (ampc-send-command 'listplaylists))
+ (current-playlist
+ (ampc-send-command 'playlistinfo)))))))
+
+(defun ampc-update-playlist ()
+ (ampc-with-buffer 'playlists
+ (if (search-forward-regexp "^\\* " nil t)
+ (ampc-send-command 'listplaylistinfo
+ nil
+ (get-text-property (point) 'data))
+ (ampc-with-buffer 'playlist
+ (delete-region (point-min) (point-max))
+ (ampc-set-dirty nil)))))
+
+(defun ampc-send-command-impl (command)
+ (when ampc-debug
+ (message (concat "ampc: " command)))
+ (process-send-string ampc-connection (concat command "\n")))
+
+(defun ampc-send-command (command &optional unique &rest args)
+ (if (equal command 'idle)
+ (when ampc-working-timer
+ (cancel-timer ampc-working-timer)
+ (setf ampc-yield nil
+ ampc-working-timer nil)
+ (ampc-fill-status))
+ (unless ampc-working-timer
+ (setf ampc-yield 0
+ ampc-working-timer (run-at-time nil 0.1 'ampc-yield))))
+ (setf command `(,command ,@args))
+ (when (equal (car-safe ampc-outstanding-commands) '(idle))
+ (setf (car ampc-outstanding-commands) '(noidle))
+ (ampc-send-command-impl "noidle"))
+ (setf ampc-outstanding-commands
+ (nconc (if unique
+ ampc-outstanding-commands
+ (remove command ampc-outstanding-commands))
+ `(,command))))
+
+(defun ampc-send-next-command ()
+ (unless ampc-outstanding-commands
+ (ampc-send-command 'idle))
+ (ampc-send-command-impl (concat (symbol-name (caar
ampc-outstanding-commands))
+ (loop for a in
+ (cdar ampc-outstanding-commands)
+ concat " "
+ concat (cond ((integerp a)
+ (number-to-string a))
+ (t a))))))
+
+(defun ampc-tree< (a b)
+ (not (string< (if (listp a) (car a) a) (if (listp b) (car b) b))))
+
+(defun ampc-create-tree ()
+ (avl-tree-create 'ampc-tree<))
+
+(defun ampc-extract (tag &optional buffer)
+ (with-current-buffer (or buffer (current-buffer))
+ (if (listp tag)
+ (ampc-extract (plist-get tag :tag))
+ (save-excursion
+ (goto-char (point-min))
+ (when (search-forward-regexp
+ (concat "^" (regexp-quote tag) ": \\(.*\\)$")
+ nil
+ t)
+ (let ((result (match-string 1)))
+ (when (equal tag "Time")
+ (setf result (ampc-transform-time result)))
+ result))))))
+
+(defun ampc-insert (element data &optional cmp)
+ (save-excursion
+ (goto-char (point-min))
+ (ecase
+ (loop until (eobp)
+ for tp = (get-text-property (+ (point) 2) 'data)
+ finally return 'insert
+ thereis
+ (cond ((eq cmp t)
+ (let ((s (buffer-substring-no-properties
+ (+ (point) 2)
+ (line-end-position))))
+ (cond ((equal s element)
+ (unless (member data tp)
+ (put-text-property (+ (point) 2)
+ (1+ (line-end-position))
+ 'data
+ `(,data . ,tp)))
+ 'update)
+ ((string< element s)
+ 'insert))))
+ (cmp
+ (let ((r (funcall cmp data tp)))
+ (if (memq r '(update insert))
+ r
+ (forward-line (1- r))
+ nil)))
+ ((equal tp data)
+ 'update)
+ (t
+ (let ((s (buffer-substring-no-properties
+ (+ (point) 2)
+ (line-end-position))))
+ (unless (string< s element)
+ 'insert))))
+ do (forward-line))
+ (insert
+ (insert " ")
+ (let ((start (point)))
+ (insert element "\n")
+ (put-text-property start (point) 'data (if (eq cmp t)
+ `(,data)
+ data)))
+ nil)
+ (update t
+ (remove-text-properties (point) (1+ (point)) '(updated))
+ (equal (buffer-substring (point) (1+ (point))) "*")))))
+
+(defun ampc-fill-tag (trees)
+ (put-text-property (point-min) (point-max) 'data nil)
+ (loop with new-trees
+ finally return new-trees
+ for tree in trees
+ do (avl-tree-mapc (lambda (e)
+ (when (ampc-insert (car e) (cdr e) t)
+ (push (cdr e) new-trees)))
+ tree)))
+
+(defun ampc-fill-song (trees)
+ (loop
+ for songs in trees
+ do (loop for song in songs
+ do (ampc-insert
+ (ampc-pad
+ (loop for (p . v) in (plist-get (cdr ampc-type) :properties)
+ collect `(,(- (or (plist-get v :offset) 2) 2)
+ . ,(or (cdr-safe (assoc p song)) ""))))
+ `((,song))))))
+
+(defun* ampc-narrow-entry (&optional (delimiter "file"))
+ (narrow-to-region (move-beginning-of-line nil)
+ (or (progn (goto-char (line-end-position))
+ (when (search-forward-regexp
+ (concat "^" (regexp-quote delimiter) ":
")
+ nil
+ t)
+ (move-beginning-of-line nil)
+ (1- (point))))
+ (point-max))))
+
+(defun ampc-get-window (type)
+ (loop for w in (ampc-windows)
+ thereis (with-current-buffer (window-buffer w)
+ (when (eq (car ampc-type) type)
+ w))))
+
+(defun* ampc-fill-playlist (&aux properties)
+ (ampc-fill-skeleton 'playlist
+ (setf properties (plist-get (cdr ampc-type) :properties))
+ (with-current-buffer data-buffer
+ (loop
+ for i from 0
+ while (search-forward-regexp "^file: " nil t)
+ do (save-restriction
+ (ampc-narrow-entry)
+ (let ((file (ampc-extract "file"))
+ (text
+ (ampc-pad
+ (loop for (tag . tag-properties) in properties
+ collect `(,(- (or (plist-get tag-properties
+ :offset)
+ 2)
+ 2)
+ . ,(ampc-extract tag))))))
+ (ampc-with-buffer 'playlist
+ (ampc-insert text
+ `(("file" . ,file)
+ (index . ,i))
+ (lambda (a b)
+ (let ((p1 (cdr (assoc 'index a)))
+ (p2 (cdr (assoc 'index b))))
+ (cond ((< p1 p2) 'update)
+ ((eq p1 p2)
+ (if (equal (cdr (assoc "file" a))
+ (cdr (assoc "file" b)))
+ 'update
+ 'insert))
+ (t (- p1 p2)))))))))))))
+
+(defun* ampc-fill-outputs (&aux properties)
+ (ampc-fill-skeleton 'outputs
+ (setf properties (plist-get (cdr ampc-type) :properties))
+ (with-current-buffer data-buffer
+ (loop
+ while (search-forward-regexp "^outputid: " nil t)
+ do (save-restriction
+ (ampc-narrow-entry "outputid")
+ (let ((outputid (ampc-extract "outputid"))
+ (outputenabled (ampc-extract "outputenabled"))
+ (text
+ (ampc-pad
+ (loop for (tag . tag-properties) in properties
+ collect `(,(- (or (plist-get tag-properties :offset)
+ 2)
+ 2)
+ . ,(ampc-extract tag))))))
+ (ampc-with-buffer 'outputs
+ (ampc-insert text `(("outputid" . ,outputid)
+ ("outputenabled" . ,outputenabled))))))))))
+
+(defun* ampc-fill-current-playlist (&aux properties)
+ (ampc-fill-skeleton 'current-playlist
+ (setf properties (plist-get (cdr ampc-type) :properties))
+ (with-current-buffer data-buffer
+ (loop
+ while (search-forward-regexp "^file: " nil t)
+ do (save-restriction
+ (ampc-narrow-entry)
+ (let ((file (ampc-extract "file"))
+ (pos (ampc-extract "Pos"))
+ (text
+ (ampc-pad
+ (loop for (tag . tag-properties) in properties
+ collect `(,(- (or (plist-get tag-properties :offset)
+ 2)
+ 2)
+ . ,(ampc-extract tag))))))
+ (ampc-with-buffer 'current-playlist
+ (ampc-insert text
+ `(("file" . ,file)
+ ("Pos" . ,(string-to-number pos)))
+ (lambda (a b)
+ (let ((p1 (cdr (assoc "Pos" a)))
+ (p2 (cdr (assoc "Pos" b))))
+ (cond ((< p1 p2) 'insert)
+ ((eq p1 p2)
+ (if (equal (cdr (assoc "file" a))
+ (cdr (assoc "file" b)))
+ 'update
+ 'insert))
+ (t (- p1 p2)))))))))))))
+
+(defun ampc-fill-playlists ()
+ (ampc-fill-skeleton 'playlists
+ (with-current-buffer data-buffer
+ (loop while (search-forward-regexp "^playlist: \\(.*\\)$" nil t)
+ for playlist = (match-string 1)
+ do (ampc-with-buffer 'playlists
+ (ampc-insert playlist playlist))))))
+
+(defun ampc-yield ()
+ (setf ampc-yield (1+ ampc-yield))
+ (ampc-fill-status))
+
+(defun ampc-fill-status ()
+ (ampc-with-buffer 'status
+ (delete-region (point-min) (point-max))
+ (funcall (or (plist-get (cadr ampc-type) :filler)
+ 'ampc-fill-status-default))
+ (ampc-set-dirty nil)))
+
+(defun ampc-fill-status-default ()
+ (let ((flags (mapconcat
+ 'identity
+ (loop for (f . n) in '(("repeat" . "Repeat")
+ ("random" . "Random")
+ ("consume" . "Consume"))
+ when (equal (cdr (assoc f ampc-status)) "1")
+ collect n
+ end)
+ "|"))
+ (state (cdr (assoc "state" ampc-status))))
+ (insert (concat "State: " state
+ (when ampc-yield
+ (concat (make-string (- 10 (length state)) ? )
+ (ecase (% ampc-yield 4)
+ (0 "|")
+ (1 "/")
+ (2 "-")
+ (3 "\\"))))
+ "\n"
+ (when (equal state "play")
+ (concat "Playing: "
+ (cdr (assoc "Artist" ampc-status))
+ " - "
+ (cdr (assoc "Title" ampc-status))
+ "\n"))
+ "Volume: " (cdr (assoc "volume" ampc-status)) "\n"
+ "Crossfade: " (cdr (assoc "xfade" ampc-status)) "\n"
+ (unless (equal flags "")
+ (concat flags "\n"))))))
+
+(defun ampc-fill-tag-song ()
+ (loop
+ with trees = `(,ampc-internal-db)
+ for w in (ampc-windows)
+ do
+ (ampc-with-buffer w
+ (when (member (car ampc-type) '(tag song))
+ (if ampc-dirty
+ (ampc-fill-skeleton w
+ (ecase (car ampc-type)
+ (tag (setf trees (ampc-fill-tag trees)))
+ (song (ampc-fill-song trees))))
+ (setf trees nil)
+ (loop while (search-forward-regexp "^* " nil t)
+ do (setf trees (append (get-text-property (point) 'data)
+ trees))))))))
+
+(defun* ampc-transform-time (data &aux (time (string-to-number data)))
+ (concat (number-to-string (/ time 60))
+ ":"
+ (when (< (% time 60) 10)
+ "0")
+ (number-to-string (% time 60))))
+
+(defun ampc-handle-idle ()
+ (loop until (eobp)
+ for subsystem = (buffer-substring (point) (line-end-position))
+ when (string-match "^changed: \\(.*\\)$" subsystem)
+ do (case (intern (match-string 1 subsystem))
+ (database
+ (setf ampc-internal-db nil)
+ (ampc-set-dirty 'tag t)
+ (ampc-set-dirty 'song t))
+ (output
+ (ampc-set-dirty 'outputs t))
+ ((player options mixer)
+ (setf ampc-status nil)
+ (ampc-set-dirty 'status t))
+ (stored_playlist
+ (ampc-set-dirty 'playlists t)
+ (ampc-set-dirty 'playlist t))
+ (playlist
+ (ampc-set-dirty 'current-playlist t)
+ (ampc-set-dirty 'status t)))
+ end
+ do (forward-line))
+ (ampc-update))
+
+(defun ampc-handle-setup (status)
+ (unless (and (string-match "^ MPD \\(.+\\)\\.\\(.+\\)\\.\\(.+\\)$"
+ status)
+ (let ((version-a (string-to-number (match-string 1 status)))
+ (version-b (string-to-number (match-string 2 status)))
+ ;; (version-c (string-to-number (match-string 2 status)))
+ )
+ (or (> version-a 0)
+ (>= version-b 15))))
+ (error (concat "Your version of MPD is not supported. "
+ "ampc supports MPD 0.15.0 and later"))))
+
+(defun ampc-fill-internal-db ()
+ (setf ampc-internal-db (ampc-create-tree))
+ (loop while (search-forward-regexp "^file: " nil t)
+ do (save-restriction
+ (ampc-narrow-entry)
+ (ampc-fill-internal-db-entry)))
+ (ampc-fill-tag-song))
+
+(defun ampc-fill-internal-db-entry ()
+ (loop
+ with data-buffer = (current-buffer)
+ with tree = `(nil . ,ampc-internal-db)
+ for w in (ampc-windows)
+ do
+ (with-current-buffer (window-buffer w)
+ (ampc-set-dirty t)
+ (ecase (car ampc-type)
+ (tag
+ (let* ((data (or (ampc-extract (cdr ampc-type) data-buffer)
+ "[Not Specified]"))
+ (member (and (cdr tree) (avl-tree-member (cdr tree) data))))
+ (cond (member (setf tree member))
+ ((cdr tree)
+ (setf member `(,data . nil))
+ (avl-tree-enter (cdr tree) member)
+ (setf tree member))
+ (t
+ (setf (cdr tree) (ampc-create-tree) member`(,data . nil))
+ (avl-tree-enter (cdr tree) member)
+ (setf tree member)))))
+ (song
+ (push (loop for p in `(("file")
+ ,@(plist-get (cdr ampc-type) :properties))
+ for data = (ampc-extract (car p) data-buffer)
+ when data
+ collect `(,(car p) . ,data)
+ end)
+ (cdr tree))
+ (return))))))
+
+(defun ampc-handle-current-song ()
+ (loop for k in '("Artist" "Title")
+ for s = (ampc-extract k)
+ when s
+ do (push `(,k . ,s) ampc-status)
+ end)
+ (ampc-fill-status))
+
+(defun ampc-handle-status ()
+ (loop for k in '("volume" "repeat" "random" "consume" "xfade" "state" "song")
+ for v = (ampc-extract k)
+ when v
+ do (push `(,k . ,v) ampc-status)
+ end)
+ (ampc-with-buffer 'current-playlist
+ (when ampc-highlight-current-song-mode
+ (font-lock-fontify-region (point-min) (point-max)))))
+
+(defun ampc-handle-update ()
+ (message "Database update started"))
+
+(defun ampc-handle-command (status)
+ (if (eq status 'error)
+ (pop ampc-outstanding-commands)
+ (case (car (pop ampc-outstanding-commands))
+ (idle
+ (ampc-handle-idle))
+ (setup
+ (ampc-handle-setup status))
+ (currentsong
+ (ampc-handle-current-song))
+ (status
+ (ampc-handle-status))
+ (update
+ (ampc-handle-update))
+ (listplaylistinfo
+ (ampc-fill-playlist))
+ (listplaylists
+ (ampc-fill-playlists))
+ (playlistinfo
+ (ampc-fill-current-playlist))
+ (listallinfo
+ (ampc-fill-internal-db))
+ (outputs
+ (ampc-fill-outputs))))
+ (unless ampc-outstanding-commands
+ (ampc-update))
+ (ampc-send-next-command))
+
+(defun ampc-filter (_process string)
+ (assert (buffer-live-p (process-buffer ampc-connection)))
+ (with-current-buffer (process-buffer ampc-connection)
+ (when string
+ (when ampc-debug
+ (message "ampc: -> %s" string))
+ (goto-char (process-mark ampc-connection))
+ (insert string)
+ (set-marker (process-mark ampc-connection) (point)))
+ (save-excursion
+ (goto-char (point-min))
+ (let ((success))
+ (when (or (and (search-forward-regexp
+ "^ACK \\[\\(.*\\)\\] {.*} \\(.*\\)\n\\'"
+ nil
+ t)
+ (message "ampc command error: %s (%s)"
+ (match-string 2)
+ (match-string 1))
+ t)
+ (and (search-forward-regexp "^OK\\(.*\\)\n\\'" nil t)
+ (setf success t)))
+ (let ((match-end (match-end 0)))
+ (save-restriction
+ (narrow-to-region (point-min) match-end)
+ (goto-char (point-min))
+ (ampc-handle-command (if success (match-string 1) 'error)))
+ (delete-region (point-min) match-end)))))))
+
+;;; **** window management
+(defun ampc-windows (&optional unordered)
+ (loop for f being the frame
+ thereis (loop for w being the windows of f
+ when (eq (window-buffer w) (car ampc-buffers))
+ return (loop for b in (if unordered
+ ampc-buffers-unordered
+ ampc-buffers)
+ collect
+ (loop for w being the windows of f
+ thereis (and (eq (window-buffer w)
+ b)
+ w))))))
+
+(defun* ampc-configure-frame-1 (split &aux (split-type (car split)))
+ (if (member split-type '(vertical horizontal))
+ (let* ((sizes))
+ (loop with length = (if (eq split-type 'horizontal)
+ (window-width)
+ (window-height))
+ with rest = length
+ with rest-car
+ for subsplit in (cdr split)
+ for s = (car subsplit)
+ if (equal s 1.0)
+ do (push t sizes)
+ and do (setf rest-car sizes)
+ else
+ do (let ((l (if (integerp s) s (floor (* s length)))))
+ (setf rest (- rest l))
+ (push l sizes))
+ finally do (setf (car rest-car) rest))
+ (let ((first-window (selected-window)))
+ (setf sizes (nreverse sizes))
+ (loop for size in (loop for s in sizes
+ collect s)
+ for window on (cdr sizes)
+ do (select-window
+ (setf (car window)
+ (split-window nil
+ size
+ (eq split-type 'horizontal)))))
+ (setf (car sizes) first-window))
+ (loop for subsplit in (cdr split)
+ for window in sizes
+ do (with-selected-window window
+ (ampc-configure-frame-1 (cdr subsplit)))
+ if (plist-get (cddr subsplit) :point)
+ do (select-window window)
+ end))
+ (setf (window-dedicated-p (selected-window)) nil)
+ (ecase split-type
+ ((tag song)
+ (pop-to-buffer-same-window
+ (get-buffer-create (concat "*ampc "
+ (or (plist-get (cdr split) :tag) "Song")
+ "*")))
+ (ampc-tag-song-mode))
+ (outputs
+ (pop-to-buffer-same-window (get-buffer-create "*ampc Outputs*"))
+ (ampc-outputs-mode))
+ (current-playlist
+ (pop-to-buffer-same-window (get-buffer-create "*ampc Current
Playlist*"))
+ (ampc-current-playlist-mode)
+ (ampc-highlight-current-song-mode 1))
+ (playlist
+ (pop-to-buffer-same-window (get-buffer-create "*ampc Playlist*"))
+ (ampc-playlist-mode))
+ (playlists
+ (pop-to-buffer-same-window (get-buffer-create "*ampc Playlists*"))
+ (ampc-playlists-mode))
+ (status
+ (pop-to-buffer-same-window (get-buffer-create "*ampc Status*"))
+ (ampc-mode)))
+ (destructuring-bind (&key (dedicated t) (mode-line t) &allow-other-keys)
+ (cdr split)
+ (setf (window-dedicated-p (selected-window)) dedicated)
+ (unless mode-line
+ (setf mode-line-format nil)))
+ (setf ampc-type split)
+ (add-to-list 'ampc-all-buffers (current-buffer))
+ (push `(,(or (plist-get (cdr split) :id)
+ (if (eq (car ampc-type) 'song) 9998 9999))
+ . ,(current-buffer))
+ ampc-buffers)
+ (ampc-set-dirty t)))
+
+(defun ampc-configure-frame (split)
+ (if ampc-use-full-frame
+ (progn (setf (window-dedicated-p (selected-window)) nil)
+ (delete-other-windows))
+ (loop with live-window = nil
+ for w in (nreverse (ampc-windows t))
+ if (window-live-p w)
+ if (not live-window)
+ do (setf live-window w)
+ else
+ do (delete-window w)
+ end
+ end
+ finally do (if live-window (select-window live-window))))
+ (setf ampc-buffers nil)
+ (ampc-configure-frame-1 split)
+ (setf ampc-buffers-unordered (mapcar 'cdr ampc-buffers)
+ ampc-buffers (mapcar 'cdr (sort ampc-buffers
+ (lambda (a b) (< (car a) (car b))))))
+ (ampc-update))
+
+;;; *** interactives
+(defun* ampc-unmark-all (&aux buffer-read-only)
+ "Remove all marks."
+ (interactive)
+ (save-excursion
+ (goto-char (point-min))
+ (loop while (search-forward-regexp "^\\* " nil t)
+ do (replace-match " " nil nil)))
+ (ampc-post-mark-change-update))
+
+(defun ampc-trigger-update ()
+ "Trigger a database update."
+ (interactive)
+ (ampc-send-command 'update))
+
+(defun* ampc-toggle-marks (&aux buffer-read-only)
+ "Toggle marks. Marked entries become unmarked, and vice versa."
+ (interactive)
+ (save-excursion
+ (loop for (a . b) in '(("* " . "T ")
+ (" " . "* ")
+ ("T " . " "))
+ do (goto-char (point-min))
+ (loop while (search-forward-regexp (concat "^" (regexp-quote a))
+ nil
+ t)
+ do (replace-match b nil nil))))
+ (ampc-post-mark-change-update))
+
+(defun ampc-up (&optional arg)
+ "Go to the previous ARG'th entry.
+With optional prefix ARG, move the next ARG entries after point
+rather than the selection."
+ (interactive "P")
+ (ampc-move t arg))
+
+(defun ampc-down (&optional arg)
+ "Go to the next ARG'th entry.
+With optional prefix ARG, move the next ARG entries after point
+rather than the selection."
+ (interactive "P")
+ (ampc-move nil arg))
+
+(defun ampc-mark (&optional arg)
+ "Mark the next ARG'th entries.
+ARG defaults to 1."
+ (interactive "p")
+ (ampc-mark-impl t arg))
+
+(defun ampc-unmark (&optional arg)
+ "Unmark the next ARG'th entries.
+ARG defaults to 1."
+ (interactive "p")
+ (ampc-mark-impl nil arg))
+
+(defun ampc-increase-volume (&optional arg)
+ "Decrease volume.
+With prefix argument ARG, set volume to ARG percent."
+ (interactive "P")
+ (ampc-set-volume arg '+))
+
+(defun ampc-decrease-volume (&optional arg)
+ "Decrease volume.
+With prefix argument ARG, set volume to ARG percent."
+ (interactive "P")
+ (ampc-set-volume arg '-))
+
+(defun ampc-increase-crossfade (&optional arg)
+ "Increase crossfade.
+With prefix argument ARG, set crossfading to ARG seconds."
+ (interactive "P")
+ (ampc-set-crossfade arg '+))
+
+(defun ampc-decrease-crossfade (&optional arg)
+ "Decrease crossfade.
+With prefix argument ARG, set crossfading to ARG seconds."
+ (interactive "P")
+ (ampc-set-crossfade arg '-))
+
+(defun ampc-toggle-repeat (&optional arg)
+ "Toggle MPD's repeat state.
+With prefix argument ARG, enable repeating if ARG is positive,
+otherwise disable it."
+ (interactive "P")
+ (ampc-toggle-state 'repeat arg))
+
+(defun ampc-toggle-consume (&optional arg)
+ "Toggle MPD's consume state.
+With prefix argument ARG, enable consuming if ARG is positive,
+otherwise disable it.
+
+When consume is activated, each song played is removed from the playlist."
+ (interactive "P")
+ (ampc-toggle-state 'consume arg))
+
+(defun ampc-toggle-random (&optional arg)
+ "Toggle MPD's random state.
+With prefix argument ARG, enable random playing if ARG is positive,
+otherwise disable it."
+ (interactive "P")
+ (ampc-toggle-state 'random arg))
+
+(defun ampc-play-this ()
+ "Play selected song."
+ (interactive)
+ (unless (eobp)
+ (ampc-send-command 'play nil (1- (line-number-at-pos)))
+ (ampc-send-command 'pause nil 0)))
+
+(defun* ampc-toggle-play
+ (&optional arg &aux (state (cdr-safe (assoc "state" ampc-status))))
+ "Toggle play state.
+If mpd does not play a song already, start playing the song at
+point if the current buffer is the playlist buffer, otherwise
+start at the beginning of the playlist.
+
+If ARG is 4, stop player rather than pause if applicable."
+ (interactive "P")
+ (when state
+ (when arg
+ (setf arg (prefix-numeric-value arg)))
+ (ecase (intern state)
+ (stop
+ (when (or (null arg) (> arg 0))
+ (ampc-send-command
+ 'play
+ nil
+ (if (and (eq (car ampc-type) 'current-playlist) (not (eobp)))
+ (1- (line-number-at-pos))
+ 0))))
+ (pause
+ (when (or (null arg) (> arg 0))
+ (ampc-send-command 'pause nil 0)))
+ (play
+ (cond ((or (null arg) (< arg 0))
+ (ampc-send-command 'pause nil 1))
+ ((eq arg 4)
+ (ampc-send-command 'stop)))))))
+
+(defun ampc-next (&optional arg)
+ "Play next song.
+With prefix argument ARG, skip ARG songs."
+ (interactive "p")
+ (ampc-skip (or arg 1)))
+
+(defun ampc-previous (&optional arg)
+ "Play previous song.
+With prefix argument ARG, skip ARG songs."
+ (interactive "p")
+ (ampc-skip (- (or arg 1))))
+
+(defun ampc-rename-playlist (new-name)
+ "Rename selected playlist to NEW-NAME.
+Interactively, read NEW-NAME from the minibuffer."
+ (interactive "MNew name: ")
+ (if (ampc-playlist)
+ (ampc-send-command 'rename nil (ampc-playlist) new-name)
+ (error "No playlist selected")))
+
+(defun ampc-load ()
+ "Load selected playlist in the current playlist."
+ (interactive)
+ (if (ampc-playlist)
+ (ampc-send-command 'load nil (ampc-playlist))
+ (error "No playlist selected")))
+
+(defun ampc-toggle-output-enabled (&optional arg)
+ "Toggle the next ARG outputs.
+If ARG is omitted, use the selected entries."
+ (interactive "P")
+ (ampc-with-selection arg
+ (let ((data (get-text-property (point) 'data)))
+ (ampc-send-command (if (equal (cdr (assoc "outputenabled" data)) "1")
+ 'disableoutput
+ 'enableoutput)
+ nil
+ (cdr (assoc "outputid" data))))))
+
+(defun ampc-delete (&optional arg)
+ "Delete the next ARG songs from the playlist.
+If ARG is omitted, use the selected entries."
+ (interactive "P")
+ (let ((point (point)))
+ (ampc-with-selection arg
+ (let ((val (1- (- (line-number-at-pos) index))))
+ (if (ampc-playlist)
+ (ampc-send-command 'playlistdelete t (ampc-playlist) val)
+ (ampc-send-command 'delete t val))))
+ (goto-char point)
+ (ampc-align-point)))
+
+(defun ampc-align-point ()
+ (unless (eobp)
+ (move-beginning-of-line nil)
+ (forward-char 2)))
+
+(defun ampc-shuffle ()
+ "Shuffle playlist."
+ (interactive)
+ (if (not (ampc-playlist))
+ (ampc-send-command 'shuffle)
+ (ampc-with-buffer 'playlist
+ (let ((shuffled
+ (mapcar
+ 'car
+ (sort (loop until (eobp)
+ collect `(,(cdr (assoc "file" (get-text-property
+ (+ 2 (point))
+ 'data)))
+ . ,(random))
+ do (forward-line))
+ (lambda (a b)
+ (< (cdr a) (cdr b)))))))
+ (ampc-clear)
+ (loop for s in shuffled
+ do (ampc-add-impl s))))))
+
+(defun ampc-clear ()
+ "Clear playlist."
+ (interactive)
+ (if (ampc-playlist)
+ (ampc-send-command 'playlistclear nil (ampc-playlist))
+ (ampc-send-command 'clear)))
+
+(defun ampc-add (&optional arg)
+ "Add the next ARG songs associated with the entries after point
+to the playlist.
+If ARG is omitted, use the selected entries in the current buffer."
+ (interactive "P")
+ (ampc-with-selection arg
+ (ampc-add-impl)))
+
+(defun ampc-delete-playlist ()
+ "Delete selected playlist."
+ (interactive)
+ (ampc-with-selection nil
+ (let ((name (get-text-property (point) 'data)))
+ (when (y-or-n-p (concat "Delete playlist " name "?"))
+ (ampc-send-command 'rm nil name)))))
+
+(defun ampc-store (name)
+ "Store current playlist as NAME.
+Interactively, read NAME from the minibuffer."
+ (interactive "MSave playlist as: ")
+ (ampc-send-command 'save nil name))
+
+(defun* ampc-goto-current-song
+ (&aux (song (cdr-safe (assoc "song" ampc-status))))
+ "Select the current playlist window and move point to the current song."
+ (interactive)
+ (when song
+ (ampc-with-buffer 'current-playlist
+ no-se
+ (select-window (ampc-get-window 'current-playlist))
+ (goto-char (point-min))
+ (forward-line (string-to-number song))
+ (ampc-align-point))))
+
+(defun ampc-previous-line (&optional arg)
+ "Go to previous ARG'th entry in the current buffer.
+ARG defaults to 1."
+ (interactive "p")
+ (ampc-next-line (* (or arg 1) -1)))
+
+(defun ampc-next-line (&optional arg)
+ "Go to next ARG'th entry in the current buffer.
+ARG defaults to 1."
+ (interactive "p")
+ (forward-line arg)
+ (if (eobp)
+ (progn (forward-line -1)
+ (forward-char 2)
+ t)
+ (ampc-align-point)
+ nil))
+
+(defun ampc-quit (&optional arg)
+ "Quit ampc.
+If called with a prefix argument ARG, kill the mpd instance that
+ampc is connected to."
+ (interactive "P")
+ (when (and ampc-connection (member (process-status ampc-connection)
+ '(open run)))
+ (set-process-filter ampc-connection nil)
+ (when (equal (car-safe ampc-outstanding-commands) '(idle))
+ (ampc-send-command-impl "noidle")
+ (with-current-buffer (process-buffer ampc-connection)
+ (loop do (goto-char (point-min))
+ until (search-forward-regexp "^\\(ACK\\)\\|\\(OK\\).*\n\\'" nil
t)
+ do (accept-process-output ampc-connection nil 50))))
+ (ampc-send-command-impl (if arg "kill" "close")))
+ (when ampc-working-timer
+ (cancel-timer ampc-working-timer))
+ (loop with found-window
+ for w in (nreverse (ampc-windows t))
+ when (window-live-p w)
+ when found-window
+ do (delete-window w)
+ else
+ do (setf found-window t
+ (window-dedicated-p w) nil)
+ end
+ end)
+ (loop for b in ampc-all-buffers
+ when (buffer-live-p b)
+ do (kill-buffer b)
+ end)
+ (setf ampc-connection nil
+ ampc-buffers nil
+ ampc-all-buffers nil
+ ampc-internal-db nil
+ ampc-working-timer nil
+ ampc-outstanding-commands nil
+ ampc-status nil)
+ (run-hooks 'ampc-quit-hook))
+
+;;;###autoload
+(defun ampc (&optional host port)
+ "ampc is an asynchronous client for the MPD media player.
+This function is the main entry point for ampc.
+
+Non-interactively, HOST and PORT specify the MPD instance to
+connect to. The values default to localhost:6600."
+ (interactive "MHost (localhost): \nMPort (6600): ")
+ (when ampc-connection
+ (ampc-quit))
+ (run-hooks 'ampc-before-startup-hook)
+ (when (equal host "")
+ (setf host nil))
+ (when (equal port "")
+ (setf port nil))
+ (let ((connection (open-network-stream "ampc"
+ (with-current-buffer
+ (get-buffer-create " *mpc*")
+ (delete-region (point-min)
+ (point-max))
+ (current-buffer))
+ (or host "localhost")
+ (or port 6600)
+ :type 'plain :return-list t)))
+ (unless (car connection)
+ (error "Failed connecting to server: %s"
+ (plist-get ampc-connection :error)))
+ (setf ampc-connection (car connection)))
+ (setf ampc-outstanding-commands '((setup)))
+ (set-process-coding-system ampc-connection 'utf-8-unix 'utf-8-unix)
+ (set-process-filter ampc-connection 'ampc-filter)
+ (set-process-query-on-exit-flag ampc-connection nil)
+ (ampc-configure-frame (cdar ampc-views))
+ (run-hooks 'ampc-connected-hook)
+ (ampc-filter (process-buffer ampc-connection) nil))
+
+(provide 'ampc)
+
+;; Local Variables:
+;; eval: (outline-minor-mode 1)
+;; outline-regexp: ";;; \\*+"
+;; lexical-binding: t
+;; fill-column: 80
+;; indent-tabs-mode: nil
+;; End:
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Chong Yidong <=