playlist: moved saving/loading code to queue_save.c

Create a new library which saves/loads the queue to/from the state
file.

1 files changed, 41 insertions, 0 deletions

diff --git a/src/queue_save.h b/src/queue_save.h
new file mode 100644
index 00000000..1b8fe0e3
--- /dev/null
+++ b/src/queue_save.h
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2003-2009 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+/*
+ * This library saves the queue into the state file, and also loads it
+ * back into memory.
+ */
+
+#ifndef QUEUE_SAVE_H
+#define QUEUE_SAVE_H
+
+#include <stdio.h>
+
+struct queue;
+
+void
+queue_save(FILE *fp, const struct queue *queue);
+
+/**
+ * Loads one song from the state file line and returns its number.
+ * Returns -1 on failure.
+ */
+int
+queue_load_song(struct queue *queue, const char *line);
+
+#endif