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-rw-r--r--code/Nbt.hpp516
1 files changed, 516 insertions, 0 deletions
diff --git a/code/Nbt.hpp b/code/Nbt.hpp
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+++ b/code/Nbt.hpp
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+#pragma once
+
+#include <cstddef>
+#include <vector>
+#include <iostream>
+#include <zlib.h>
+#include <fstream>
+#include "utility.h"
+
+namespace nbt {
+ enum TagType {
+ End, //nullptr
+ Byte, //int8_t
+ Short, //int16_t
+ Int, //int32_t
+ Long, //int64_t
+ Float, //float
+ Double, //double
+ ByteArray, //std::vector<signed char>
+ String, //std::string
+ List, //std::vector<NbtTag>
+ Compound, //std::vector<NbtTag>
+ IntArray, //std::vector<int32_t>
+ Unknown, //dummy value
+ };
+
+ class NbtTag;
+
+ typedef std::vector<NbtTag> compound_t;
+
+ typedef std::string string_t;
+
+ typedef std::vector<signed char> byteArray_t;
+
+ typedef std::vector<int> intArray_t;
+
+ class NbtTag {
+ TagType type = Unknown;
+ string_t name = "";
+ unsigned char *data = nullptr;
+ public:
+ NbtTag(TagType type, string_t name) : type(type), name(name) {
+ switch (type) {
+ case End:
+ data = nullptr;
+ break;
+ case Compound:
+ data = (unsigned char *) new compound_t;
+ break;
+ case String:
+ data = (unsigned char *) new string_t;
+ break;
+ case Int:
+ data = (unsigned char *) new int32_t;
+ break;
+ case Long:
+ data = (unsigned char *) new int64_t;
+ break;
+ case Byte:
+ data = (unsigned char *) new int8_t;
+ break;
+ case Short:
+ data = (unsigned char *) new int16_t;
+ break;
+ case Float:
+ data = (unsigned char *) new float;
+ break;
+ case Double:
+ data = (unsigned char *) new double;
+ break;
+ case ByteArray:
+ data = (unsigned char *) new byteArray_t;
+ break;
+ case List:
+ data = (unsigned char *) new compound_t;
+ break;
+ case IntArray:
+ data = (unsigned char *) new intArray_t;
+ }
+ }
+
+ NbtTag(const NbtTag &other) : type(other.type), name(other.name) {
+ switch (type) {
+ case Byte:
+ data = (unsigned char *) new int8_t;
+ *((int8_t *) data) = *((int8_t *) other.data);
+ break;
+ case Short:
+ data = (unsigned char *) new int16_t;
+ *((int16_t *) data) = *((int16_t *) other.data);
+ break;
+ case Int:
+ data = (unsigned char *) new int32_t;
+ *((int32_t *) data) = *((int32_t *) other.data);
+ break;
+ case Long:
+ data = (unsigned char *) new int64_t;
+ *((int64_t *) data) = *((int64_t *) other.data);
+ break;
+ case Float:
+ data = (unsigned char *) new float;
+ *((float *) data) = *((float *) other.data);
+ break;
+ case Double:
+ data = (unsigned char *) new double;
+ *((double *) data) = *((double *) other.data);
+ break;
+ case ByteArray:
+ data = (unsigned char *) new byteArray_t;
+ *((std::vector<signed char> *) data) = *((std::vector<signed char> *) other.data);
+ break;
+ case String:
+ data = (unsigned char *) new string_t;
+ *((std::string *) data) = *((std::string *) other.data);
+ break;
+ case List:
+ data = (unsigned char *) new compound_t;
+ *((std::vector<NbtTag> *) data) = *((std::vector<NbtTag> *) other.data);
+ break;
+ case Compound:
+ data = (unsigned char *) new compound_t;
+ *((std::vector<NbtTag> *) data) = *((std::vector<NbtTag> *) other.data);
+ break;
+ case IntArray:
+ data = (unsigned char *) new intArray_t;
+ *((std::vector<int> *) data) = *((std::vector<int> *) other.data);
+ break;
+ }
+ }
+
+ ~NbtTag() {
+ switch (type) {
+ case Byte:
+ delete ((int8_t *) data);
+ break;
+ case Short:
+ delete ((int16_t *) data);
+ break;
+ case Int:
+ delete ((int32_t *) data);
+ break;
+ case Long:
+ delete ((int64_t *) data);
+ break;
+ case Float:
+ delete ((float *) data);
+ break;
+ case Double:
+ delete ((double *) data);
+ break;
+ case ByteArray:
+ delete ((std::vector<signed char> *) data);
+ break;
+ case String:
+ delete ((std::string *) data);
+ break;
+ case List:
+ delete ((std::vector<NbtTag> *) data);
+ break;
+ case Compound:
+ delete ((std::vector<NbtTag> *) data);
+ break;
+ case IntArray:
+ delete ((std::vector<int> *) data);
+ break;
+ }
+ };
+
+ void swap(NbtTag &other) {
+ std::swap(other.data, data);
+ std::swap(other.name, name);
+ std::swap(other.type, type);
+ }
+
+ NbtTag &operator=(NbtTag other) {
+ other.swap(*this);
+ return *this;
+ }
+
+ TagType GetType() const{
+ return type;
+ }
+
+ string_t GetName() const{
+ return name;
+ }
+
+
+ string_t &GetString() {
+ string_t &val = *reinterpret_cast<std::string *>(data);
+ return val;
+ }
+
+ compound_t &GetCompound() {
+ std::vector<NbtTag> &val = *reinterpret_cast<std::vector<NbtTag> *>(data);
+ return val;
+ }
+
+ compound_t &GetList() {
+ std::vector<NbtTag> &val = *reinterpret_cast<std::vector<NbtTag> *>(data);
+ return val;
+ }
+
+ int64_t &GetLong() {
+ int64_t &val = *reinterpret_cast<int64_t *>(data);
+ return val;
+ }
+
+ float &GetFloat() {
+ float &val = *reinterpret_cast<float *>(data);
+ return val;
+ }
+
+ double &GetDouble() {
+ double &val = *reinterpret_cast<double *>(data);
+ return val;
+ }
+
+ byteArray_t &GetByteArray() {
+ auto &val = *reinterpret_cast<byteArray_t *>(data);
+ return val;
+ }
+
+ intArray_t &GetIntArray() {
+ auto &val = *reinterpret_cast<intArray_t *>(data);
+ return val;
+ }
+
+ int16_t &GetShort() {
+ auto &val = *reinterpret_cast<int16_t *>(data);
+ return val;
+ }
+
+ int32_t &GetInt() {
+ auto &val = *reinterpret_cast<int32_t *>(data);
+ return val;
+ }
+
+ int8_t &GetByte() {
+ auto &val = *reinterpret_cast<int8_t *>(data);
+ return val;
+ }
+ };
+
+ NbtTag ParseTag(unsigned char *data, size_t &size, TagType listItemType = Unknown) {
+ size = 0;
+ TagType type;
+ if (listItemType == Unknown) {
+ type = (TagType) *data;
+ data += 1;
+ size += 1;
+ } else
+ type = listItemType;
+ string_t name;
+ if (listItemType == Unknown && type != End) {
+ short nameLen = *((short *) data);
+ data += 2;
+ size += 2;
+ endswap(&nameLen);
+ name = std::string((char *) data, nameLen);
+ data += nameLen;
+ size += nameLen;
+ }
+ NbtTag tag(type, name);
+ switch (type) {
+ case Compound: {
+ do {
+ size_t s;
+ tag.GetCompound().push_back(ParseTag(data, s));
+ data += s;
+ size += s;
+ } while (tag.GetCompound().back().GetType() != End);
+ tag.GetCompound().pop_back();
+ return tag;
+ }
+ case String: {
+ short len = *((short *) data);
+ data += 2;
+ size += 2;
+ endswap(&len);
+ string_t str((char *) data, len);
+ data += len;
+ size += len;
+ tag.GetString() = str;
+ return tag;
+ }
+ case End:
+ return tag;
+ case Long:
+ tag.GetLong() = *((int64_t *) data);
+ endswap(&tag.GetLong());
+ data += 8;
+ size += 8;
+ return tag;
+ case Short:
+ tag.GetShort() = *((int16_t *) data);
+ endswap(&tag.GetShort());
+ data += 2;
+ size += 2;
+ return tag;
+ case Float:
+ tag.GetFloat() = *((float *) data);
+ endswap(&tag.GetFloat());
+ data += 4;
+ size += 4;
+ return tag;
+ case Double:
+ tag.GetDouble() = *((double *) data);
+ endswap(&tag.GetDouble());
+ data += 8;
+ size += 8;
+ return tag;
+ case Byte:
+ tag.GetByte() = *((int8_t *) data);
+ endswap(&tag.GetByte());
+ data += 1;
+ size += 1;
+ return tag;
+ case Int:
+ tag.GetInt() = *((int32_t *) data);
+ endswap(&tag.GetInt());
+ data += 4;
+ size += 4;
+ return tag;
+ case List: {
+ TagType listType = *((TagType *) data);
+ data += 1;
+ size += 1;
+ int32_t listLength = *((int32_t *) data);
+ endswap(&listLength);
+ data += 4;
+ size += 4;
+ for (int i = 0; i < listLength; i++) {
+ size_t s = 0;
+ std::vector<NbtTag> &vec = tag.GetCompound();
+ vec.push_back(ParseTag(data, s, listType));
+ data += s;
+ size += s;
+ }
+ return tag;
+ }
+ case ByteArray: {
+ int32_t arrLength = *((int32_t *) data);
+ endswap(&arrLength);
+ data += 4;
+ size += 4;
+ for (int i = 0; i < arrLength; i++) {
+ signed char val = (signed char) data[i];
+ std::vector<signed char> &vec = tag.GetByteArray();
+ vec.push_back(val);
+ }
+ data += arrLength;
+ size += arrLength;
+ return tag;
+ }
+ default:
+ throw 13;
+ }
+ }
+
+ NbtTag ParseTag(unsigned char *data, size_t *optionalSize = nullptr) {
+ size_t s = 0;
+ size_t &size = (optionalSize ? *optionalSize : s);
+ return ParseTag(data, size);
+ }
+
+ std::vector<unsigned char> Decompress(unsigned char *data, size_t dataLen) {
+ const size_t decompBuffSize = 1024 * 16;
+ unsigned char *decompBuff = new unsigned char[decompBuffSize];
+ std::vector<unsigned char> uncompressed;
+ for (int i = 0; i < decompBuffSize; i++)
+ decompBuff[i] = 0;
+
+
+ z_stream stream;
+ stream.zalloc = Z_NULL;
+ stream.zfree = Z_NULL;
+ stream.opaque = Z_NULL;
+ stream.next_in = data;
+ stream.avail_in = dataLen;
+ stream.next_out = decompBuff;
+ stream.avail_out = decompBuffSize;
+
+ if (inflateInit2(&stream, 15 + 32) != Z_OK) {
+ delete[] decompBuff;
+ throw 171;
+ }
+
+ int res;
+ do {
+ stream.avail_out = decompBuffSize;
+
+ switch ((res = inflate(&stream, Z_NO_FLUSH))) {
+ case Z_MEM_ERROR:
+ throw 172;
+ case Z_DATA_ERROR:
+ throw 173;
+ case Z_NEED_DICT:
+ throw 174;
+ }
+
+ uncompressed.resize(uncompressed.size() + decompBuffSize);
+ std::copy(decompBuff, decompBuff + decompBuffSize, uncompressed.end() - decompBuffSize);
+ } while (stream.avail_out == 0);
+ if (res != Z_STREAM_END)
+ throw 175;
+ if (inflateEnd(&stream) != Z_OK)
+ throw 176;
+ delete[] decompBuff;
+ return uncompressed;
+ }
+
+ NbtTag ParseCompressed(unsigned char *data, size_t dataLen) {
+ auto uncompressed = Decompress(data, dataLen);
+ NbtTag root = ParseTag(uncompressed.data());
+ return root;
+ }
+
+ NbtTag Parse(unsigned char *data, size_t dataLen) {
+ bool isCompressed = *data!=10;
+ if (isCompressed)
+ return ParseCompressed(data,dataLen);
+ else
+ return ParseTag(data);
+ }
+
+ void PrintTree(NbtTag &tree, int deepness = 0, std::ostream &ostream = std::cout) {
+ ostream << std::string(deepness, '\t') << "Tag ";
+ switch (tree.GetType()) {
+ case Byte:
+ ostream << "byte";
+ break;
+ case Short:
+ ostream << "short";
+ break;
+ case Int:
+ ostream << "int";
+ break;
+ case Long:
+ ostream << "long";
+ break;
+ case Float:
+ ostream << "float";
+ break;
+ case Double:
+ ostream << "double";
+ break;
+ case ByteArray:
+ ostream << "byte array";
+ break;
+ case String:
+ ostream << "string";
+ break;
+ case List:
+ ostream << "list";
+ break;
+ case Compound:
+ ostream << "compound";
+ break;
+ case IntArray:
+ ostream << "int array";
+ break;
+ case End:
+ ostream << "end";
+ break;
+ }
+ if (tree.GetName().length() > 0)
+ ostream << " (" << tree.GetName() << ")";
+ ostream << ": ";
+
+ if (tree.GetType() == Compound || tree.GetType() == List) {
+ std::vector<NbtTag> &vec = (tree.GetType() == Compound ? tree.GetCompound() : tree.GetList());
+ ostream << vec.size() << " entries {" << std::endl;
+ for (auto it = vec.begin(); it != vec.end(); ++it) {
+ PrintTree(*it, deepness + 1, std::cout);
+ }
+ ostream << std::string(deepness, '\t') << "}" << std::endl;
+ return;
+ } else {
+ switch (tree.GetType()) {
+ case Int:
+ ostream << tree.GetInt();
+ break;
+ case String:
+ ostream << "\"" << tree.GetString() << "\"";
+ break;
+ case Double:
+ ostream << tree.GetDouble();
+ break;
+ case Float:
+ ostream << tree.GetFloat();
+ break;
+ case Short:
+ ostream << tree.GetShort();
+ break;
+ case Byte:
+ ostream << (int) tree.GetByte();
+ break;
+ case Long:
+ ostream << tree.GetLong();
+ break;
+ case ByteArray:
+ ostream << "[" << tree.GetByteArray().size() << " bytes]: ";
+ for (int i = 0; i < (tree.GetByteArray().size() > 10 ? 10 : tree.GetByteArray().size()); i++) {
+ ostream << std::hex << "0x" << (tree.GetByteArray()[i] > 15 ? "" : "0")
+ << (int) tree.GetByteArray()[i]
+ << std::dec << " ";
+ }
+ break;
+ case IntArray:
+ break;
+ }
+ ostream << std::endl;
+ }
+ }
+} \ No newline at end of file
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