nbtvis/src/tag.h

#pragma once 

#include "stream.h"

#include <stdint.h>
#include <stdbool.h>
#include <arpa/inet.h>
#include <string.h>
#include <unistd.h>

typedef enum: int8_t {
	TAG_END = 0,
	TAG_BYTE = 1,
	TAG_SHORT = 2,
	TAG_INT = 3,
	TAG_LONG = 4,
	TAG_FLOAT = 5,
	TAG_DOUBLE = 6,
	TAG_BYTE_ARRAY = 7,
	TAG_STRING = 8,
	TAG_LIST = 9,
	TAG_COMPOUND = 10,
	TAG_INT_ARRAY = 11,
	TAG_LONG_ARRAY = 12
} tagtype_t ;

struct tag_t;

typedef union {
	int8_t b;
	int16_t s;
	int32_t i;
	int64_t l;
	float f;
	double d;
	struct {
		int32_t size;
		int8_t *data;
	} b_arr;
	struct {
		uint16_t size;
		char *data;
	} string;
	struct {
		tagtype_t type;
		int32_t size;
		struct tag_t *tags;
	} list;
	struct {
		int32_t size;
		struct tag_t *tags;
	} compound;
	struct {
		int32_t size;
		int32_t *data;
	} i_arr;
	struct {
		int32_t size;
		int64_t *data;
	} l_arr;
} tagdata_t;

typedef struct tag_t {
	tagtype_t type;
	tagdata_t data;
	uint16_t name_len;
	char *name;
} tag_t;

bool tag_read_header(tag_t *tag, stream_t *stream, bool named);
bool tag_read_data(tag_t *tag, stream_t *stream);
bool tag_read(tag_t *tag, stream_t *stream, bool named);
void tag_print(const tag_t *tag);