piotrku91 / ByteRanger

C++ Templates - Converts data from bytes to variables checked by template deductions and fill it with proper destination size of variable.

ByteRanger

This smart object after create converts data from bytes to variables checked by template deductions and fill it with proper destination size of variable.

Written by Piotr K. ([e-mail])

piotrq.eu

Required C++ version: 17

GCC version: gcc (GCC) 10.3.1 20210422

Compiled and tested on: Linux Fedora 32

Example program

 std::vector<uint8_t> bytesVector = {
                                    255, // will be save in uint8_t var_one_byte
                                    255, 255, // will be save in uint16_t var_two_bytes
                                    0, 0, 0, 1, // will be save in uint32_t var_four_bytes 
                                    255, 255, 255, 255 // will be save in uint32_t var_four_bytes2
                                    };

uint8_t var_one_byte = 0;
uint16_t var_two_bytes = 0;
uint32_t var_four_bytes = 0;
uint32_t var_four_bytes2 = 0;

ByteRanger converted_data{bytesVector, var_one_byte, var_two_bytes, var_four_bytes, var_four_bytes2};

std::cout << "\n";
std::cout << "Bytes data:\n";
for (const auto& byte : bytesVector) {
    std::cout << static_cast<int>(byte) << ", ";
}
std::cout << "\n\n";
std::cout << "Args incjeted:" << converted_data.getArgsCount() << " | "
          << "Bytes given: " << converted_data.getBytesCount() << "\n";
std::cout << "\n";
std::cout << "Types deducted, variables rearanged and interpreted as: \n";
std::cout << "uint8_t " << static_cast<int>(var_one_byte) << "\n"
          << "uint16_t " << var_two_bytes << "\n"
          << "uint32_t " << var_four_bytes << "\n"
          << "uint32_t " << var_four_bytes2 << 
          std::endl;

auto [new_var, new_var2, new_var3, new_var4] = converted_data.getConstReferences();
std::cout << static_cast<int>(new_var) << new_var2 << new_var3 << new_var4 << "\n";

std::cout << "\n";

Example output

Bytes data:
255, 255, 255, 0, 0, 0, 1, 255, 255, 255, 255, 

Args incjeted:4 | Bytes given: 11

Types deducted, variables rearanged and interpreted as: 
uint8_t 255
uint16_t 65535
uint32_t 1
uint32_t 4294967295

How to build test file with examples

mkdir build
cd build
cmake ..
make -j4