From 2c667c23f02dd61c4629e38eb808359a2a5e21c0 Mon Sep 17 00:00:00 2001
From: plugd <plugd@thelambdalab.xyz>
Date: Tue, 12 Apr 2022 14:21:31 +0200
Subject: [PATCH] Added function to restart the emus process.

---
 emus.el | 33 ++++++++++++++++++++++++---------
 1 file changed, 24 insertions(+), 9 deletions(-)

diff --git a/emus.el b/emus.el
index 08df9f5..2b02cd9 100644
--- a/emus.el
+++ b/emus.el
@@ -136,6 +136,19 @@ be used by `emus--load-library'."
   (unless emus--proc-in-use
     (apply #'emus--send-cmd-raw cmd args)))
 
+(defun emus-kill-process ()
+  "Kill any existing mpg123 process."
+  (let ((emus-process (get-process "emus-process")))
+    (if emus-process
+        (kill-process emus-process))))
+
+(defun emus-restart ()
+  "Restart emus, regardless of current state."
+  (interactive)
+  (emus-kill-process)
+  (setq emus-state 'stopped
+        emus--proc-in-use nil
+        emus-tracks nil))
 
 ;;; Library
 ;;
@@ -191,7 +204,7 @@ Once the library is initialized, the function THEN is called."
     (setq emus--proc-in-use t)
     (emus--suspend-cp)
     (setq emus-state 'stopped)
-    (setq emus-tracks (emus--make-tracks-from-playlist-files (emus-get-playlist-files)))
+    (setq emus-tracks nil)
     (let ((proc (emus-get-process))
           (tagstr "")
           (filenames (emus-get-audio-files)))
@@ -208,6 +221,7 @@ Once the library is initialized, the function THEN is called."
                                      (set-process-filter proc nil)
                                      (setq emus-tracks (reverse emus-tracks))
                                      (emus--sort-tracks)
+                                     (emus--add-tracks-from-playlist-files)
                                      (unless emus-current-track
                                        (setq emus-current-track (car emus-tracks)))
                                      (funcall then)
@@ -233,9 +247,9 @@ Once the library is initialized, the function THEN is called."
          (found-title (setq title found-title)))))
     (emus-make-track artist album title filename)))
 
-(defun emus--make-tracks-from-playlist-files (filenames)
+(defun emus--add-tracks-from-playlist-files ()
   (let ((tracks nil))
-    (dolist (filename filenames)
+    (dolist (filename (emus-get-playlist-files))
       (let ((artist "Playlists")
             (album (file-name-base filename))
             (title nil)
@@ -257,7 +271,7 @@ Once the library is initialized, the function THEN is called."
              (setq tracks (cons (emus-make-track artist album (or title filename) filename)
                                 tracks))
              (setq title nil))))))
-    tracks))
+    (setq emus-tracks (append emus-tracks (reverse tracks)))))
 
 (defun emus--sort-tracks ()
   "Sort the library tracks according to artist and album.
@@ -272,11 +286,7 @@ by the filesystem."
                       (let ((album1 (emus-track-album r1))
                             (album2 (emus-track-album r2)))
                         (string< album1 album2))
-                    (if (equal artist1 "Playlists")
-                        t
-                      (if (equal artist2 "Playlists")
-                          nil
-                        (string< artist1 artist2)))))))))
+                    (string< artist1 artist2)))))))
 
 (defmacro emus--with-library (&rest body)
   "Evaluate BODY with the library initialized."
@@ -702,6 +712,11 @@ Used to update browser display when `emus-current-track' and/or `emus-state' cha
     map)
   "Keymap for emus browser.")
 
+(defun emus-restart ()
+  "Restart emus."
+  (interactive)
+  (emus-kill-process))
+
 (define-derived-mode emus-browser-mode special-mode "emus-browser"
   "Major mode for EMUS music player file browser."
   (setq-local buffer-invisibility-spec nil))
-- 
2.20.1