Added private BPositionIO derived classes BFileIO and BFileDescriptorIO which

wrap a FILE* respectively a file descriptor.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@36324 a95241bf-73f2-0310-859d-f6bbb57e9c96

headers/private/storage/FileIO.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright 2009-2010, Ingo Weinhold, [email protected].
+ * Distributed under the terms of the MIT License.
+ */
+#ifndef _FILE_IO_H
+#define _FILE_IO_H
+
+
+#include <stdio.h>
+
+#include <DataIO.h>
+
+
+class BFileIO : public BPositionIO {
+public:
+								BFileIO(FILE* file,
+									bool takeOverOwnership = false);
+	virtual						~BFileIO();
+
+	virtual	ssize_t				Read(void *buffer, size_t size);
+	virtual	ssize_t				Write(const void *buffer, size_t size);
+
+	virtual	ssize_t				ReadAt(off_t position, void *buffer,
+									size_t size);
+	virtual	ssize_t				WriteAt(off_t position, const void *buffer,
+									size_t size);
+
+	virtual	off_t				Seek(off_t position, uint32 seekMode);
+	virtual	off_t				Position() const;
+
+	virtual	status_t			SetSize(off_t size);
+	virtual	status_t			GetSize(off_t* size) const;
+
+private:
+								BFileIO(const BFileIO& other);
+			BFileIO&			operator=(const BFileIO& other);
+
+			off_t				_Seek(off_t position, uint32 seekMode) const;
+
+private:
+			FILE*				fFile;
+			bool				fOwnsFile;
+};
+
+
+#endif	// _FILE_IO_H