meh

std::string Decompress(char* Data, int Size)
{
    std::string Result;

    z_stream zs;
    std::memset(&zs, 0, sizeof(zs));

    if (inflateInit(&zs) != Z_OK)
        throw(std::runtime_error("inflateInit failed while decompressing."));

    zs.next_in = (Bytef*)Data;
    zs.avail_in = Size;

    int Success = 0;
    std::vector<char> Temp(32768);

    do {
        zs.next_out = reinterpret_cast<Bytef*>(&Temp[0]);
        zs.avail_out = Temp.size();
        Success = inflate(&zs, 0);

        if (Result.size() < zs.total_out)
        {
            Result.append(Temp.data(), zs.total_out - Result.size());
        }
    } while (Success == Z_OK);

    inflateEnd(&zs);

    if (Success != Z_STREAM_END)
    {
        std::ostringstream OS;
        OS << "Exception during zlib decompression: (" << Success << ")" << zs.msg;
        throw(std::runtime_error(OS.str());
    }

    return Result;
}