#ifndef _URF_H
#define _URF_H

#define UPKG_MAX_NAME_SIZE 64
#define UPKG_MAX_ORDERS 10

// all data types in upkg files are signed
#define UPKG_DATA_FCI 'F'
#define UPKG_DATA_32 '3'
#define UPKG_DATA_16 '1'
#define UPKG_DATA_8 '8'
#define UPKG_DATA_ASCIC 'C'
#define UPKG_DATA_ASCIZ 'Z'

#define UPKG_OBJ_JUNK 'j'
#define UPKG_OBJ_NAME 'n'
#define UPKG_EXP_SIZE 's'
#define UPKG_OBJ_SIZE 'd'

#define UPKG_NAME_NOCOUNT -1

#define UPKG_HDR_TAG 0x9e2a83c1

enum upkg_flags {
	RF_Transactional = 0x00000001,
	RF_SourceModified = 0x00000002,
	RF_Public = 0x00000004,
	RF_LoadForClient = 0x00010000,
	RF_LoadForServer = 0x00020000,
	RF_LoadForEdit = 0x00040000,
	RF_Standalone = 0x00080000,
	RF_HasStack = 0x02000000,
	RF_Intrinsic = 0x04000000
};

struct unreal_pkg_hdr {
	int32_t tag, // hdr tag, should == UPKG_HDR_TAG
	file_version, // should be 61 for unreal.  > for UT
	pkg_flags, // bitflags..  we don't need them
	name_count, // number of names in name table (>= 0)
	name_offset, // offset to name table          (>= 0)
	export_count, // num. exports in export table  (>= 0)
	export_offset, // offset to export table        (>= 0)
	import_count, //  -- seeing a trend yet?       (>= 0)
	import_offset, //                               (>= 0)
	heritage_count, // heritage table (has GUID's)   (>= 1)
	heritage_offset; //                               (>= 0)
};

/* indices have 2 types.  type 1 is harder, so I'll describe type 2 first. =)

  type 2 is an index into the name table (upkg_name_table).  pure and simple.

  type 1 is an index into either the imports table, or the exports table, or NULL.
   if index == 0, you can ignore it
   if index < 0, use imports[-index - 1]
   if index > 0, use exports[index - 1]

  type 1 is used for dependency/inheritancy info
*/
struct unreal_pkg_export_tbl {
	int32_t class_index, // index, type 1
	package_index, // index, type 1
	super_index, // index, type 1
	object_name, // index, type 2
	object_flags, // flags for the object (will be supported when I decide to code it ;-)
	serial_size, // size of export described
	serial_offset, // start of the export in the the package file (offset from beginning of file)
	class_name, // index, type 2 (the name of the object class)
	package_name, // index, type 2 (the name of the object package)
	type_name, // index, type 2 (the name of the object type)
	object_size, // bytes of data in object
	object_offset; // offset into package file that object starts
};

struct unreal_pkg_import_tbl {
	int32_t class_package, // index, type 2
	class_name, // index, type 2
	package_index, // index, type 1
	object_name; // index, type 2
};

struct unreal_pkg_name_tbl {
	char name[UPKG_MAX_NAME_SIZE]; // a name
	int32_t flags; // flags for the name
};

struct unreal_pkg_export_hdr {
	int32_t version; // version of pkg header this supports
	const char* class_name; //[UPKG_MAX_NAME_SIZE];	// unreal class
	const char* order; //[UPKG_MAX_ORDERS * 10];	// order of the header
};

struct unreal_pkg_object_hdr {
	const char type_str[4]; // type string of the object type
	const char object_sig[5]; // sig of the object data (if exists)
	int32_t sig_offset; // offset in object that object_sig occurs
	// char desc[33];		// description of the object
};

typedef struct unreal_pkg_hdr upkg_hdr;
typedef struct unreal_pkg_export_tbl upkg_exports;
typedef struct unreal_pkg_import_tbl upkg_imports;
typedef struct unreal_pkg_name_tbl upkg_names;
typedef struct unreal_pkg_export_hdr upkg_export_hdr;
typedef struct unreal_pkg_object_hdr upkg_object_hdr;

extern const upkg_export_hdr export_desc[];
extern const upkg_object_hdr object_desc[];

#endif // _URF_H