Function load_file

src/utils/file_utils.cpp:188–211

Load a file into a buffer

/// Load a file into a buffer
bool load_file(const std::string filename, std::vector<char>& buf, bool append)
{
  std::ifstream file(filename, std::ios::binary);
  if (!file.good()) {
    LBANN_ERROR("!file.good() for filename: ", filename);
  }

  file.unsetf(std::ios::skipws);

  file.seekg(0, std::ios::end);
  const std::streamsize file_size = static_cast<std::streamsize>(file.tellg());

  file.seekg(0, std::ios::beg);

  if (!append) {
    buf.clear();
  }
  const size_t cur_size = buf.size();
  buf.resize(static_cast<size_t>(file_size) + cur_size);

  file.read(buf.data() + cur_size, file_size);

  return true;
}

namespace file {