add command "listneighbors"

Closes #38

NEWS

@@ -1,4 +1,5 @@
 0.32 (not yet released)
+* add command "listneighbors"
 * reduce network transfer for "search"
 
 0.31 (2018/10/24)

meson.build

@@ -99,6 +99,7 @@ executable('mpc',
   'src/idle.c',
   'src/message.c',
   'src/mount.c',
+  'src/neighbors.c',
   'src/search.c',
   'src/options.c',
   'src/path.c',

src/main.c

@@ -32,6 +32,7 @@
 #include "idle.h"
 #include "message.h"
 #include "mount.h"
+#include "neighbors.h"
 #include "search.h"
 #include "mpc.h"
 #include "options.h"
@@ -141,6 +142,8 @@ static const struct command {
 	{ "subscribe", 1, 1, 0, cmd_subscribe, "<channel>",
 	  "Subscribe to the specified channel and continuously receive messages." },
 
+	{ "listneighbors", 0, 2, 0, cmd_listneighbors, "", "List neighbors." },
+
 #if LIBMPDCLIENT_CHECK_VERSION(2,16,0)
 	{ "mount", 0, 2, 0, cmd_mount, "[<uri> <storage>]", "List mounts or add a new mount." },
 	{ "unmount", 1, 1, 0, cmd_unmount, "<uri>", "Remove a mount." },

src/neighbors.c

@@ -0,0 +1,47 @@
+/*
+ * music player command (mpc)
+ * Copyright 2003-2019 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#include "neighbors.h"
+#include "util.h"
+#include "charset.h"
+#include "Compiler.h"
+
+#include <mpd/client.h>
+
+#include <stdio.h>
+
+int
+cmd_listneighbors(gcc_unused int argc, gcc_unused char **argv,
+		  struct mpd_connection *connection)
+{
+	if (!mpd_send_command(connection, "listneighbors", NULL))
+		printErrorAndExit(connection);
+
+	struct mpd_pair *pair;
+	while ((pair = mpd_recv_pair_named(connection, "neighbor")) != NULL) {
+		printf("%s\n", charset_from_utf8(pair->value));
+		mpd_return_pair(connection, pair);
+	}
+
+	if (!mpd_response_finish(connection))
+		printErrorAndExit(connection);
+
+	return 0;
+}

src/neighbors.h

@@ -0,0 +1,29 @@
+/*
+ * music player command (mpc)
+ * Copyright 2003-2019 The Music Player Daemon Project
+ * http://www.musicpd.org
+ *
+ * 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 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, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef MPC_NEIGHBORS_H
+#define MPC_NEIGHBORS_H
+
+struct mpd_connection;
+
+int
+cmd_listneighbors(int argc, char **argv, struct mpd_connection *connection);
+
+#endif /* MPC_NEIGHBORS_H */