Function Split

tensorflow/core/kernels/string_split_op.cc:109–126

// is valid.
template <typename Predicate>
std::vector<StringPiece> Split(const string& str, const string& delimiter,
                               Predicate predicate) {
  if (str.empty()) {
    return std::vector<StringPiece>();
  }
  if (delimiter.empty()) {
    std::vector<StringPiece> result;
    result.resize(str.size());
    for (size_t i = 0; i < str.size(); ++i) {
      result[i] = StringPiece(str.data() + i, 1);
    }
    return result;
  }
  if (delimiter.size() == 1) {
    return SplitOnChar(str, delimiter[0], predicate);
  }
  return SplitOnCharSet(str, delimiter, predicate);
}

std::vector<StringPiece> SplitV2(const string& str, StringPiece sep,
                                 int maxsplit) {