playlist: move enum playlist_result to playlist_error.h

Reduce header dependencies.

Makefile.am

@@ -166,6 +166,7 @@ mpd_headers = \
 	src/player_thread.h \
 	src/player_control.h \
 	src/playlist.h \
+	src/playlist_error.h \
 	src/playlist_internal.h \
 	src/playlist_print.h \
 	src/playlist_save.h \

src/playlist.h

@@ -21,25 +21,12 @@
 #define MPD_PLAYLIST_H
 
 #include "queue.h"
+#include "playlist_error.h"
 
 #include <stdbool.h>
 
 struct player_control;
 
-enum playlist_result {
-	PLAYLIST_RESULT_SUCCESS,
-	PLAYLIST_RESULT_ERRNO,
-	PLAYLIST_RESULT_DENIED,
-	PLAYLIST_RESULT_NO_SUCH_SONG,
-	PLAYLIST_RESULT_NO_SUCH_LIST,
-	PLAYLIST_RESULT_LIST_EXISTS,
-	PLAYLIST_RESULT_BAD_NAME,
-	PLAYLIST_RESULT_BAD_RANGE,
-	PLAYLIST_RESULT_NOT_PLAYING,
-	PLAYLIST_RESULT_TOO_LARGE,
-	PLAYLIST_RESULT_DISABLED,
-};
-
 struct playlist {
 	/**
 	 * The song queue - it contains the "real" playlist.

src/playlist_error.h

@@ -0,0 +1,37 @@
+/*
+ * Copyright (C) 2003-2011 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 MPD_PLAYLIST_ERROR_H
+#define MPD_PLAYLIST_ERROR_H
+
+enum playlist_result {
+	PLAYLIST_RESULT_SUCCESS,
+	PLAYLIST_RESULT_ERRNO,
+	PLAYLIST_RESULT_DENIED,
+	PLAYLIST_RESULT_NO_SUCH_SONG,
+	PLAYLIST_RESULT_NO_SUCH_LIST,
+	PLAYLIST_RESULT_LIST_EXISTS,
+	PLAYLIST_RESULT_BAD_NAME,
+	PLAYLIST_RESULT_BAD_RANGE,
+	PLAYLIST_RESULT_NOT_PLAYING,
+	PLAYLIST_RESULT_TOO_LARGE,
+	PLAYLIST_RESULT_DISABLED,
+};
+
+#endif

src/playlist_print.c

@@ -23,6 +23,7 @@
 #include "playlist_plugin.h"
 #include "playlist_any.h"
 #include "playlist_song.h"
+#include "playlist.h"
 #include "queue_print.h"
 #include "stored_playlist.h"
 #include "song_print.h"

src/playlist_queue.c

@@ -22,6 +22,7 @@
 #include "playlist_plugin.h"
 #include "playlist_any.h"
 #include "playlist_song.h"
+#include "playlist.h"
 #include "song.h"
 #include "input_stream.h"
 

src/playlist_queue.h

@@ -24,12 +24,13 @@
 #ifndef MPD_PLAYLIST_QUEUE_H
 #define MPD_PLAYLIST_QUEUE_H
 
-#include "playlist.h"
+#include "playlist_error.h"
 
 #include <stdbool.h>
 
 struct playlist_provider;
 struct playlist;
+struct player_control;
 
 /**
  * Loads the contents of a playlist and append it to the specified

src/playlist_save.c

@@ -19,7 +19,9 @@
 
 #include "config.h"
 #include "playlist_save.h"
+#include "playlist.h"
 #include "stored_playlist.h"
+#include "queue.h"
 #include "song.h"
 #include "mapper.h"
 #include "path.h"

src/playlist_save.h

@@ -20,11 +20,14 @@
 #ifndef MPD_PLAYLIST_SAVE_H
 #define MPD_PLAYLIST_SAVE_H
 
-#include "playlist.h"
+#include "playlist_error.h"
 
 #include <stdio.h>
 
 struct song;
+struct queue;
+struct playlist;
+struct player_control;
 
 void
 playlist_print_song(FILE *fp, const struct song *song);

src/stored_playlist.h

@@ -20,7 +20,7 @@
 #ifndef MPD_STORED_PLAYLIST_H
 #define MPD_STORED_PLAYLIST_H
 
-#include "playlist.h"
+#include "playlist_error.h"
 
 #include <glib.h>
 #include <stdbool.h>