CppUtils/Utils/DataPack.cpp

#pragma once
#include "DataPack.h"
#include <string>
#include <vector>

enum class DataPachKey : uint8_t
{
	FileStart = 0x81,
	FileEnd = 0x98,
	IdStart = 0xC7,
	IdEnd = 0xC8,
	ValueStart = 0x55,
	ValueEnd = 0x56,
	ValueStart_Small = 0x57,
	ValueStart_Small_X = 0x58,
	ChildStart = 0xD4,
	ChildEnd = 0xD5,
	ChildStart_Small = 0xD6,
	ChildStart_Small_X = 0xD7,
};

int DataPack::GetCount()
{
	return this->Child.size();
}
void DataPack::SetCount(int value)
{
	this->Child.resize(value);
}
DataPack& DataPack::operator[](int index)
{
	return this->Child[index];
}
DataPack& DataPack::operator[](std::string id)
{
	for (int i = 0; i < Child.size(); i++)
	{
		if (this->Child[i].Id == id)
		{
			return this->Child[i];
		}
	}
	Child.push_back(DataPack(id, 0));
	return this->Child[this->Child.size() - 1];
}

void DataPack::operator=(const std::initializer_list<uint8_t> data)
{
	this->Value.resize(data.size());
	memcpy(this->Value.data(), data.begin(), data.size());
}
void DataPack::operator=(const std::initializer_list<uint8_t>* data)
{
	this->Value.resize(data->size());
	memcpy(this->Value.data(), data->begin(), data->size());
}
void DataPack::operator=(const char* data)
{
	std::string str = data;
	this->Value.resize(str.size());
	memcpy(this->Value.data(), str.c_str(), str.size());
}
void DataPack::operator=(const wchar_t* data)
{
	std::wstring str = data;
	this->Value.resize(str.size() * 2);
	memcpy(this->Value.data(), str.c_str(), str.size() * 2);
}
void DataPack::operator=(char* data)
{
	std::string str = data;
	this->Value.resize(str.size());
	memcpy(this->Value.data(), str.c_str(), str.size());
}
void DataPack::operator=(wchar_t* data)
{
	std::wstring str = data;
	this->Value.resize(str.size() * 2);
	memcpy(this->Value.data(), str.c_str(), str.size() * 2);
}
void DataPack::operator=(std::string data)
{
	this->Value.resize(data.size());
	memcpy(this->Value.data(), data.c_str(), data.size());
}
void DataPack::operator=(std::wstring data)
{
	this->Value.resize(data.size() * 2);
	memcpy(this->Value.data(), data.c_str(), data.size() * 2);
}
void DataPack::RemoveAt(int index)
{
	this->Child.erase(this->Child.begin() + index);
}
DataPack::DataPack() :Id(""), Value(std::vector<uint8_t>()) {}
DataPack::DataPack(const uint8_t* data, int data_len)
{
	int index = 0;
	int bufferSize = 0;
	if (data_len < 4)
		return;
	if (data[0] == (uint8_t)DataPachKey::FileStart)
	{
		bufferSize = *(int*)&data[1];
		index = 5;
	}
	else
	{
		return;
	}
	if (data[bufferSize - 1] != (uint8_t)DataPachKey::FileEnd)
	{
		return;
	}
	while (index < bufferSize - 1)
	{
		DataPachKey key = (DataPachKey)data[index];
		switch (key)
		{
		case DataPachKey::IdStart:
		{
			index += 1;
			uint16_t idLen = *(uint16_t*)&data[index];
			index += 2;
			if (data[index + idLen] != (uint8_t)DataPachKey::IdEnd)
				return;
			this->Id.assign((char*)&data[index], idLen);
			index += idLen + 1;
			break;
		}
		case DataPachKey::ValueStart:
		{
			index += 1;
			int valueLen = *(int*)&data[index];
			index += 4;
			if (data[index + valueLen] != (uint8_t)DataPachKey::ValueEnd)
				return;
			this->Value.assign(&data[index], &data[index + valueLen]);
			index += valueLen + 1;
			break;
		}
		case DataPachKey::ValueStart_Small:
		{
			index += 1;
			uint16_t valueLen = *(uint16_t*)&data[index];
			index += 2;
			if (data[index + valueLen] != (uint8_t)DataPachKey::ValueEnd)
				return;
			this->Value.assign(&data[index], &data[index + valueLen]);
			index += valueLen + 1;
			break;
		}
		case DataPachKey::ValueStart_Small_X:
		{
			index += 1;
			uint8_t valueLen = *(uint8_t*)&data[index];
			index += 1;
			if (data[index + valueLen] != (uint8_t)DataPachKey::ValueEnd)
				return;
			this->Value.assign(&data[index], &data[index + valueLen]);
			index += valueLen + 1;
			break;
		}
		case DataPachKey::ChildStart:
		{
			index += 1;
			int childLen = *(int*)&data[index];
			index += 4;
			if (data[index + childLen] != (uint8_t)DataPachKey::ChildEnd)
				return;
			DataPack childPack(&data[index], childLen);
			this->Child.push_back(childPack);
			index += childLen + 1;
			break;
		}
		case DataPachKey::ChildStart_Small:
		{
			index += 1;
			uint16_t childLen = *(uint16_t*)&data[index];
			index += 2;
			if (data[index + childLen] != (uint8_t)DataPachKey::ChildEnd)
				return;
			DataPack childPack(&data[index], childLen);
			this->Child.push_back(childPack);
			index += childLen + 1;
			break;
		}
		case DataPachKey::ChildStart_Small_X:
		{
			index += 1;
			uint8_t childLen = *(uint8_t*)&data[index];
			index += 1;
			if (data[index + childLen] != (uint8_t)DataPachKey::ChildEnd)
				return;
			DataPack childPack(&data[index], childLen);
			this->Child.push_back(childPack);
			index += childLen + 1;
			break;
		}
		default:
		{
			
			return;
		}
		}
	}
}

DataPack::DataPack(const char* key)
{
	this->Id = key;
	this->Value.resize(0);
}
DataPack::DataPack(std::string id, uint8_t* data, int len)
{
	this->Id = id;
	this->Value.resize(len);
	RtlCopyMemory(this->Value.data(), data, len);
}
DataPack::DataPack(std::vector<uint8_t> data) :DataPack(data.data(), data.size()) {}
DataPack::DataPack(std::initializer_list<uint8_t> data) :DataPack((uint8_t*)data.begin(), data.size()) {}
DataPack::DataPack(std::string id, std::string data)
{
	this->Id = id;
	this->Value.resize(data.size());
	memcpy(this->Value.data(), data.c_str(), data.size());
}
DataPack::DataPack(std::string id, std::wstring data)
{
	this->Id = id;
	this->Value.resize(data.size() * 2);
	memcpy(this->Value.data(), data.c_str(), data.size() * 2);
}
DataPack::DataPack(std::string id, char* data)
{
	this->Id = id;
	std::string str = data;
	this->Value.resize(str.size());
	memcpy(this->Value.data(), str.c_str(), str.size());
}
DataPack::DataPack(std::string id, const char* data)
{
	this->Id = id;
	std::string str = data;
	this->Value.resize(str.size());
	memcpy(this->Value.data(), str.c_str(), str.size());
}
DataPack::DataPack(std::string id, wchar_t* data)
{
	this->Id = id;
	std::wstring str = data;
	this->Value.resize(str.size() * 2);
	memcpy(this->Value.data(), str.c_str(), str.size() * 2);
}
DataPack::DataPack(std::string id, const wchar_t* data)
{
	this->Id = id;
	std::wstring str = data;
	this->Value.resize(str.size() * 2);
	memcpy(this->Value.data(), str.c_str(), str.size() * 2);
}
void DataPack::Add(DataPack val)
{
	this->Child.push_back(val);
}
void DataPack::clear()
{
	this->Child.clear();
}
int DataPack::size()
{
	return this->Child.size();
}

std::vector<uint8_t> DataPack::GetBytes()
{
	std::vector<uint8_t> list = std::vector<uint8_t>(1);
	list[0] = (uint8_t)DataPachKey::FileStart;
	if (this->Id.size() > 0)
	{
		list.resize(6);
		list[5] = (uint8_t)DataPachKey::IdStart;
		uint16_t idlen = this->Id.size();
		list.insert(list.end(), (uint8_t*)&idlen, (uint8_t*)&idlen + 2);
		list.insert(list.end(), this->Id.c_str(), this->Id.c_str() + this->Id.size());
		list.push_back((uint8_t)DataPachKey::IdEnd);
	}
	else
	{
		list.resize(5);
	}
	if (this->Value.size() > 0)
	{
		if (this->Value.size() > UINT16_MAX)
		{
			list.push_back((uint8_t)DataPachKey::ValueStart);
			int vvlen = this->Value.size();
			list.insert(list.end(), (uint8_t*)&vvlen, (uint8_t*)&vvlen + 4);
		}
		else
		{
			if (this->Value.size() > UINT8_MAX)
			{
				list.push_back((uint8_t)DataPachKey::ValueStart_Small);
				uint16_t vvlen = this->Value.size();
				list.insert(list.end(), (uint8_t*)&vvlen, (uint8_t*)&vvlen + 2);
			}
			else
			{
				list.push_back((uint8_t)DataPachKey::ValueStart_Small_X);
				uint8_t vvlen = this->Value.size();
				list.insert(list.end(), (uint8_t*)&vvlen, (uint8_t*)&vvlen + 1);
			}
		}
		list.insert(list.end(), this->Value.data(), this->Value.data() + this->Value.size());
		list.push_back((uint8_t)DataPachKey::ValueEnd);
	}
	for (auto sub : this->Child)
	{
		auto dta = sub.GetBytes();
		if (dta.size() > UINT16_MAX)
		{
			list.push_back((uint8_t)DataPachKey::ChildStart);
			int childLen = dta.size();
			list.insert(list.end(), (uint8_t*)&childLen, (uint8_t*)&childLen + 4);
		}
		else
		{
			if (dta.size() > UINT8_MAX)
			{
				list.push_back((uint8_t)DataPachKey::ChildStart_Small);
				uint16_t childLen = dta.size();
				list.insert(list.end(), (uint8_t*)&childLen, (uint8_t*)&childLen + 2);
			}
			else
			{
				list.push_back((uint8_t)DataPachKey::ChildStart_Small_X);
				uint8_t childLen = dta.size();
				list.insert(list.end(), (uint8_t*)&childLen, (uint8_t*)&childLen + 1);
			}
		}
		list.insert(list.end(), dta.data(), dta.data() + dta.size());
		list.push_back((uint8_t)DataPachKey::ChildEnd);
	}
	list.push_back((uint8_t)DataPachKey::FileEnd);
	*(int*)&list[1] = list.size();
	return list;
}