C++ Class Base64로 인코딩된 파일을 복원

Base64 로 인코딩된 파일을 복호화하고 파일로 쓰기

텍스트 파일로 쓰기

#include <QFile>
#include <QByteArray>

#include <QDebug>

void write(QString filename)
{
    QFile file(filename);
    // Trying to open in WriteOnly
    if(!file.open(QFile::WriteOnly))
    {
        qDebug() << " Could not open file for writing";
        return;
    }
    file.write(QByteArray::fromBase64("aGVsbG8gbWFrZXJzd2ViLm5ldA=="));
    file.flush();
    file.close();
}

int main()
{
    write("helloworld.txt");
}

이미지 파일로 쓰기

#include <QFile>
#include <QByteArray>

#include <QDebug>

void write(QString filename)
{
    QFile file(filename);
    // Trying to open in WriteOnly
    if(!file.open(QFile::WriteOnly))
    {
        qDebug() << " Could not open file for writing";
        return;
    }

    file.write(QByteArray::fromBase64("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"));
    file.flush();
    file.close();
}

int main()
{
    write("tree.png");
}