Method seek

src/streams.cpp:33–52

}

void AutoFile::seek(int64_t offset, int origin)
{
    if (IsNull()) {
        throw std::ios_base::failure("AutoFile::seek: file handle is nullptr");
    }
    if (std::fseek(m_file, offset, origin) != 0) {
        throw std::ios_base::failure(feof() ? "AutoFile::seek: end of file" : "AutoFile::seek: fseek failed");
    }
    if (origin == SEEK_SET) {
        m_position = offset;
    } else if (origin == SEEK_CUR && m_position.has_value()) {
        *m_position += offset;
    } else {
        int64_t r{std::ftell(m_file)};
        if (r < 0) {
            throw std::ios_base::failure("AutoFile::seek: ftell failed");
        }
        m_position = r;
    }
}

int64_t AutoFile::tell()
{