Function getCompressionLevelRange

src/IO/CompressionMethod.cpp:122–133

}

std::pair<uint64_t, uint64_t> getCompressionLevelRange(const CompressionMethod & method)
{
    switch (method)
    {
        case CompressionMethod::Zstd:
            return {1, 22};
        case CompressionMethod::Lz4:
            return {1, 12};
        default:
            return {1, 9};
    }
}

static std::unique_ptr<CompressedReadBufferWrapper> createCompressedWrapper(
    std::unique_ptr<ReadBuffer> nested, CompressionMethod method, size_t buf_size, char * existing_memory, size_t alignment, int zstd_window_log_max)