Function doesAnyCharRequireEscaping

ThirdParty/jsoncpp/vtkjsoncpp/jsoncpp.cpp:4269–4275

String valueToString(bool value) { return value ? "true" : "false"; }

static bool doesAnyCharRequireEscaping(char const* s, size_t n) {
  assert(s || !n);

  return std::any_of(s, s + n, [](unsigned char c) {
    return c == '\\' || c == '"' || c < 0x20 || c > 0x7F;
  });
}

static unsigned int utf8ToCodepoint(const char*& s, const char* e) {
  const unsigned int REPLACEMENT_CHARACTER = 0xFFFD;