Introduction

備忘録。
本当によく忘れるので。
C#なら読み書きは最短一行なのに…

Resolution

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#include <cstdint>
#include <iostream>
#include <fstream>
#include <vector>

void readFile(const char* filename, std::vector<uint8_t>& vec)
{
    std::ifstream file(filename, std::ios::binary);
    file.unsetf(std::ios::skipws);

    std::streampos fileSize;
    file.seekg(0, std::ios::end);
    fileSize = file.tellg();
    file.seekg(0, std::ios::beg);

    vec.reserve(fileSize);
    vec.insert(vec.begin(),
               std::istream_iterator<uint8_t>(file),
               std::istream_iterator<uint8_t>());

    return vec;
}

void writeFile(const char* filename, std::vector<uint8_t>& vec)
{
    std::ofstream file(filename, std::ios::out | std::ios::binary);
    file.write((char*)&vec[0], vec.size() * sizeof(vec[0]));
    file.close();
}