OTHER: read support for zipped skins

For now, zipped skins don't show up in the selection dialog yet
But they are loaded when set in the config file

dir_iterator/archivereaddevice.h

@@ -0,0 +1,47 @@
+/**
+ *  This file is a part of Promoe, an XMMS2 Client.
+ *
+ *  Copyright (C) 2010 XMMS2 Team
+ *
+ *  This library is free software; you can redistribute it and/or
+ *  modify it under the terms of the GNU Lesser General Public
+ *  License as published by the Free Software Foundation; either
+ *  version 2.1 of the License, or (at your option) any later version.
+ *
+ *  This library 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
+ *  Lesser General Public License for more details.
+ */
+
+#ifndef __ARCHIVEREADDEVICE_H__
+#define __ARCHIVEREADDEVICE_H__
+
+#include <QIODevice>
+
+#include "archiveiterator.h"
+
+struct archive;
+struct archive_entry;
+
+class ArchiveReadDevice : public QIODevice
+{
+	Q_OBJECT
+
+public:
+	ArchiveReadDevice (ArchiveIterator *parent, const QString &name = QString ());
+	~ArchiveReadDevice () {};
+
+	// QIODevice Methods
+	qint64 readData(char*, qint64);
+	qint64 writeData(const char*, qint64) { return -1; } // read only
+
+	bool atEnd () const { return m_atEnd; }
+
+protected:
+	ArchiveIterator *m_iter;
+
+	bool m_atEnd;
+};
+
+#endif