1 files changed, 97 insertions, 0 deletions
diff --git a/core/io/file_access_buffered.h b/core/io/file_access_buffered.h
new file mode 100644
index 000000000..533cc6c7d
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+++ b/core/io/file_access_buffered.h
@@ -0,0 +1,97 @@
+/*************************************************************************/
+/*  file_access_buffered.h                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                    http://www.godotengine.org                         */
+/*************************************************************************/
+/* Copyright (c) 2007-2014 Juan Linietsky, Ariel Manzur.                 */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+#ifndef FILE_ACCESS_BUFFERED_H
+#define FILE_ACCESS_BUFFERED_H
+
+#include "os/file_access.h"
+
+#include "dvector.h"
+#include "ustring.h"
+
+class FileAccessBuffered : public FileAccess {
+
+public:
+	enum {
+		DEFAULT_CACHE_SIZE = 128 * 1024,
+	};
+
+private:
+
+	int cache_size;
+
+	int cache_data_left() const;
+	mutable Error last_error;
+
+protected:
+
+	Error set_error(Error p_error) const;
+
+	mutable struct File {
+
+		bool open;
+		int size;
+		int offset;
+		String name;
+		int access_flags;
+	} file;
+	
+	mutable struct Cache {
+		
+		Vector<uint8_t> buffer;
+		int offset;
+	} cache;
+
+	virtual int read_data_block(int p_offset, int p_size, uint8_t *p_dest = 0) const =0;
+
+	void set_cache_size(int p_size);
+	int get_cache_size();
+	
+public:
+
+	virtual size_t get_pos() const; ///< get position in the file
+	virtual size_t get_len() const; ///< get size of the file
+
+	virtual void seek(size_t p_position); ///< seek to a given position
+	virtual void seek_end(int64_t p_position=0); ///< seek from the end of file
+
+	virtual bool eof_reached() const;
+
+	virtual uint8_t get_8() const;
+	virtual int get_buffer(uint8_t *p_dst,int p_length) const; ///< get an array of bytes
+
+	virtual bool is_open() const;
+
+	virtual Error get_error() const;
+
+	FileAccessBuffered();
+	virtual ~FileAccessBuffered();
+};
+
+#endif
+