libsaria: Save queue to disk

I save when IDs are added and when a next track is chosen.

include/libsaria/queue.h

@@ -21,6 +21,7 @@ namespace libsaria
 		unsigned int size();
 		string next_file();
 
+		void save();
 	}
 }
 

libsaria/queue/file.cpp

@@ -0,0 +1,18 @@
+
+#include <libsaria/queue.h>
+#include "queue.h"
+
+namespace libsaria
+{
+
+	void queue::save()
+	{
+		OutFile out("queue.q");
+		deque<sid_t>::iterator it;
+
+		out << playqueue.size() << "\n";
+		for (it = playqueue.begin(); it != playqueue.end(); it++)
+			out << (*it) << "\n";
+	}
+
+}

libsaria/queue/queue.cpp

@@ -25,6 +25,7 @@ namespace libsaria
 		playqueue.insert(playqueue.end(), ids.begin(), ids.end());
 		println("Queue size: %d", playqueue.size());
 		trigger_callback(QUEUE_REFRESH);
+		save();
 	}
 
 	unsigned int queue::size()
@@ -36,6 +37,7 @@ namespace libsaria
 	{
 		sid_t inode;
 		pop_queue(inode);
+		save();
 		return library::find_filepath(inode);
 	}