Function parseFromStream

ThirdParty/jsoncpp/vtkjsoncpp/jsoncpp.cpp:2232–2242

// global functions

bool parseFromStream(CharReader::Factory const& fact, IStream& sin, Value* root,
                     String* errs) {
  OStringStream ssin;
  ssin << sin.rdbuf();
  String doc = std::move(ssin).str();
  char const* begin = doc.data();
  char const* end = begin + doc.size();
  // Note that we do not actually need a null-terminator.
  CharReaderPtr const reader(fact.newCharReader());
  return reader->parse(begin, end, root, errs);
}

IStream& operator>>(IStream& sin, Value& root) {
  CharReaderBuilder b;