From f042ac4f69790a6f2a4f8a50bd57f8b961b66f61 Mon Sep 17 00:00:00 2001
From: Max Kellermann <max.kellermann@gmail.com>
Date: Fri, 17 Mar 2017 18:01:38 +0100
Subject: [PATCH] main: remove the "idle" fallback code

ncmpc has been requiring MPD 0.14+ for 7 years (commit e25d7523), and
we really don't need the timer fallback.  "idle" just has to be
supported.
---
 src/main.c      | 20 +++++---------------
 src/mpdclient.c | 20 --------------------
 2 files changed, 5 insertions(+), 35 deletions(-)

diff --git a/src/main.c b/src/main.c
index 76fe235..53b3d89 100644
--- a/src/main.c
+++ b/src/main.c
@@ -191,9 +191,8 @@ static bool
 should_enable_update_timer(void)
 {
 	return (mpdclient_is_connected(mpd) &&
-		(mpd->source == NULL || /* "idle" not supported */
-		 (mpd->status != NULL &&
-		  mpd_status_get_state(mpd->status) == MPD_STATE_PLAY)))
+		mpd->status != NULL &&
+		mpd_status_get_state(mpd->status) == MPD_STATE_PLAY)
 #ifndef NCMPC_MINI
 		|| options.display_time
 #endif
@@ -216,7 +215,7 @@ static void
 do_mpd_update(void)
 {
 	if (mpdclient_is_connected(mpd) &&
-	    (mpd->source == NULL || mpd->events != 0 ||
+	    (mpd->events != 0 ||
 	     (mpd->status != NULL &&
 	      mpd_status_get_state(mpd->status) == MPD_STATE_PLAY)))
 		mpdclient_update(mpd);
@@ -342,7 +341,8 @@ check_reconnect(void)
  * idle event (or when the connection dies).
  */
 static void
-idle_callback(enum mpd_error error, enum mpd_server_error server_error,
+idle_callback(enum mpd_error error,
+	      gcc_unused enum mpd_server_error server_error,
 	      const char *message, enum mpd_idle events,
 	      void *ctx)
 {
@@ -353,16 +353,6 @@ idle_callback(enum mpd_error error, enum mpd_server_error server_error,
 	assert(mpdclient_is_connected(c));
 
 	if (error != MPD_ERROR_SUCCESS) {
-		if (error == MPD_ERROR_SERVER &&
-		    server_error == MPD_SERVER_ERROR_UNKNOWN_CMD) {
-			/* the "idle" command is not supported - fall
-			   back to timer based polling */
-			mpd_glib_free(c->source);
-			c->source = NULL;
-			auto_update_timer();
-			return;
-		}
-
 		char *allocated;
 		if (error == MPD_ERROR_SERVER)
 			message = allocated = utf8_to_locale(message);
diff --git a/src/mpdclient.c b/src/mpdclient.c
index 6826043..164a08d 100644
--- a/src/mpdclient.c
+++ b/src/mpdclient.c
@@ -177,11 +177,6 @@ mpdclient_update(struct mpdclient *c)
 	if (connection == NULL)
 		return false;
 
-	/* always announce these options as long as we don't have
-	   "idle" support */
-	if (c->source == NULL)
-		c->events |= MPD_IDLE_PLAYER|MPD_IDLE_OPTIONS;
-
 	/* free the old status */
 	if (c->status)
 		mpd_status_free(c->status);
@@ -191,29 +186,14 @@ mpdclient_update(struct mpdclient *c)
 	if (c->status == NULL)
 		return mpdclient_handle_error(c);
 
-	if (c->source == NULL &&
-	    c->update_id != mpd_status_get_update_id(c->status)) {
-		c->events |= MPD_IDLE_UPDATE;
-
-		if (c->update_id > 0)
-			c->events |= MPD_IDLE_DATABASE;
-	}
-
 	c->update_id = mpd_status_get_update_id(c->status);
 
-	if (c->source == NULL &&
-	    c->volume != mpd_status_get_volume(c->status))
-		c->events |= MPD_IDLE_MIXER;
-
 	c->volume = mpd_status_get_volume(c->status);
 
 	/* check if the playlist needs an update */
 	if (c->playlist.version != mpd_status_get_queue_version(c->status)) {
 		bool retval;
 
-		if (c->source == NULL)
-			c->events |= MPD_IDLE_QUEUE;
-
 		if (!playlist_is_empty(&c->playlist))
 			retval = mpdclient_playlist_update_changes(c);
 		else
-- 
2.30.2