Function StrValid

src/string.cpp:205–219

* Checks whether the given string is valid, i.e. contains only * valid (printable) characters and is properly terminated. * @note std::span is used instead of std::string_view as we are validating fixed-length string buffers, and * std::string_view's constructor will assume a C-string that ends with a NUL terminator, which is one of the things * we are checking. * @param str Span of chars to

 * @param str Span of chars to validate.
 */
bool StrValid(std::span<const char> str)
{
	/* Assume the ABSOLUTE WORST to be in str as it comes from the outside. */
	StringConsumer consumer(str);
	while (consumer.AnyBytesLeft()) {
		auto c = consumer.TryReadUtf8();
		if (!c.has_value()) return false; // invalid codepoint
		if (*c == 0) return true; // NUL termination
		if (!IsPrintable(*c) || (*c >= SCC_SPRITE_START && *c <= SCC_SPRITE_END)) {
			return false;
		}
	}

	return false; // missing NUL termination
}

/**
 * Trim the spaces from given string in place, i.e. the string buffer that