godot/core/io/resource_format_binary.h

/*************************************************************************/
/*  resource_format_binary.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 RESOURCE_FORMAT_BINARY_H
#define RESOURCE_FORMAT_BINARY_H

#include "io/resource_loader.h"
#include "io/resource_saver.h"
#include "os/file_access.h"


class ResourceInteractiveLoaderBinary : public ResourceInteractiveLoader {

	String local_path;
	String res_path;
	String type;
	Ref<Resource> resource;

	FileAccess *f;


	bool endian_swap;
	bool use_real64;
	uint64_t importmd_ofs;

	Vector<char> str_buf;
	List<RES> resource_cache;

	//Map<int,StringName> string_map;
	Vector<StringName> string_map;

	struct ExtResoucre {
		String path;
		String type;
	};

	Vector<ExtResoucre> external_resources;

	struct IntResoucre {
		String path;
		uint64_t offset;
	};

	Vector<IntResoucre> internal_resources;

	String get_unicode_string();
	void _advance_padding(uint32_t p_len);

	Error error;

	int stage;

friend class ResourceFormatLoaderBinary;


	Error parse_variant(Variant& r_v);

public:

	virtual void set_local_path(const String& p_local_path);
	virtual Ref<Resource> get_resource();
	virtual Error poll();
	virtual int get_stage() const;
	virtual int get_stage_count() const;

	void open(FileAccess *p_f);
	String recognize(FileAccess *p_f);
	void get_dependencies(FileAccess *p_f,List<String> *p_dependencies);


	ResourceInteractiveLoaderBinary();
	~ResourceInteractiveLoaderBinary();

};

class ResourceFormatLoaderBinary : public ResourceFormatLoader {
public:

	virtual Ref<ResourceInteractiveLoader> load_interactive(const String &p_path);
	virtual void get_recognized_extensions_for_type(const String& p_type,List<String> *p_extensions) const;
	virtual void get_recognized_extensions(List<String> *p_extensions) const;
	virtual bool handles_type(const String& p_type) const;
	virtual String get_resource_type(const String &p_path) const;
	virtual void get_dependencies(const String& p_path,List<String> *p_dependencies);
	virtual Error load_import_metadata(const String &p_path, Ref<ResourceImportMetadata>& r_var) const;



};




class ResourceFormatSaverBinaryInstance  {

	String local_path;


	bool relative_paths;
	bool bundle_resources;
	bool skip_editor;
	bool big_endian;
	int bin_meta_idx;
	FileAccess *f;
	String magic;
	Map<RES,int> resource_map;
	Map<StringName,int> string_map;
	Vector<StringName> strings;


	Set<RES> external_resources;
	List<RES> saved_resources;


	struct Property {
		int name_idx;
		Variant value;
		PropertyInfo pi;

	};

	struct ResourceData {

		String type;
		List<Property> properties;
	};




	void _pad_buffer(int p_bytes);
	void write_variant(const Variant& p_property,const PropertyInfo& p_hint=PropertyInfo());
	void _find_resources(const Variant& p_variant,bool p_main=false);
	void save_unicode_string(const String& p_string);
	int get_string_index(const String& p_string);
public:


	Error save(const String &p_path,const RES& p_resource,uint32_t p_flags=0);
};



class ResourceFormatSaverBinary : public ResourceFormatSaver  {




public:

	virtual Error save(const String &p_path,const RES& p_resource,uint32_t p_flags=0);
	virtual bool recognize(const RES& p_resource) const;
	virtual void get_recognized_extensions(const RES& p_resource,List<String> *p_extensions) const;


};


#endif // RESOURCE_FORMAT_BINARY_H