Method Calculate

libs/coding/sha1.cpp:34–60

static

// static
SHA1::Hash SHA1::Calculate(std::string const & filePath)
{
  try
  {
    base::FileData file(filePath, base::FileData::Op::READ);
    uint64_t const fileSize = file.Size();

    boost::uuids::detail::sha1 sha1;

    uint64_t currSize = 0;
    uint32_t constexpr kFileBufferSize = 8192;
    unsigned char buffer[kFileBufferSize];
    while (currSize < fileSize)
    {
      auto const toRead = std::min(kFileBufferSize, static_cast<uint32_t>(fileSize - currSize));
      file.Read(currSize, buffer, toRead);
      sha1.process_bytes(buffer, toRead);
      currSize += toRead;
    }
    return ExtractHash(sha1);
  }
  catch (Reader::Exception const & ex)
  {
    LOG(LERROR, ("Error reading file:", filePath, ex.what()));
  }
  return {};
}

// static
std::string SHA1::CalculateBase64(std::string const & filePath)