Function PrintCharsAsStringTo

source/test/gtest/src/gtest-printers.cc:337–361

// and may not be NUL-terminated.
template <typename CharType>
GTEST_ATTRIBUTE_NO_SANITIZE_MEMORY_ GTEST_ATTRIBUTE_NO_SANITIZE_ADDRESS_
    GTEST_ATTRIBUTE_NO_SANITIZE_HWADDRESS_
        GTEST_ATTRIBUTE_NO_SANITIZE_THREAD_ static CharFormat
        PrintCharsAsStringTo(const CharType* begin, size_t len, ostream* os) {
  const char* const quote_prefix = GetCharWidthPrefix(*begin);
  *os << quote_prefix << "\"";
  bool is_previous_hex = false;
  CharFormat print_format = kAsIs;
  for (size_t index = 0; index < len; ++index) {
    const CharType cur = begin[index];
    if (is_previous_hex && IsXDigit(cur)) {
      // Previous character is of '\x..' form and this character can be
      // interpreted as another hexadecimal digit in its number. Break string to
      // disambiguate.
      *os << "\" " << quote_prefix << "\"";
    }
    is_previous_hex = PrintAsStringLiteralTo(cur, os) == kHexEscape;
    // Remember if any characters required hex escaping.
    if (is_previous_hex) {
      print_format = kHexEscape;
    }
  }
  *os << "\"";
  return print_format;
}

// Prints a (const) char/wchar_t array of 'len' elements, starting at address
// 'begin'.  CharType must be either char or wchar_t.