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author | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2017-04-21 15:31:43 +0200 |
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committer | LaG1924 <12997935+LaG1924@users.noreply.github.com> | 2017-04-21 15:31:43 +0200 |
commit | 71760514fc044f273914c17b1510fa3cf10419b3 (patch) | |
tree | 72f822efde300d8e1e9de1cc578d431ff72e0e03 /Nbt.hpp | |
parent | 2017-04-15 (diff) | |
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Diffstat (limited to '')
-rw-r--r-- | Nbt.hpp | 516 |
1 files changed, 516 insertions, 0 deletions
@@ -0,0 +1,516 @@ +#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; + } + } +}
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