Function duplicateStringValue

external/jsoncpp/jsoncpp.cpp:1582–1599

Duplicates the specified string value. * @param value Pointer to the string to duplicate. Must be zero-terminated if * length is "unknown". * @param length Length of the value. if equals to unknown, then it will be * computed using strlen(value). * @return Pointer on the duplicate instance of string. */

 * @return Pointer on the duplicate instance of string.
 */
static inline char *duplicateStringValue(const char *value,
                                         unsigned int length = unknown) {
  if (length == unknown)
    length = (unsigned int)strlen(value);

  // Avoid an integer overflow in the call to malloc below by limiting length
  // to a sane value.
  if (length >= (unsigned)Value::maxInt)
    length = Value::maxInt - 1;

  char *newString = static_cast<char *>(malloc(length + 1));
  JSON_ASSERT_MESSAGE(newString != 0,
                      "in Json::Value::duplicateStringValue(): "
                      "Failed to allocate string value buffer");
  memcpy(newString, value, length);
  newString[length] = 0;
  return newString;
}

/** Free the string duplicated by duplicateStringValue().
 */