Function OTTDStringCompare

src/os/windows/win32.cpp:442–470

}

int OTTDStringCompare(std::string_view s1, std::string_view s2)
{
	typedef int (WINAPI *PFNCOMPARESTRINGEX)(LPCWSTR, DWORD, LPCWCH, int, LPCWCH, int, LPVOID, LPVOID, LPARAM);
	static const PFNCOMPARESTRINGEX _CompareStringEx = GetKernel32Function("CompareStringEx");

#ifndef SORT_DIGITSASNUMBERS
#	define SORT_DIGITSASNUMBERS 0x00000008  // use digits as numbers sort method
#endif
#ifndef LINGUISTIC_IGNORECASE
#	define LINGUISTIC_IGNORECASE 0x00000010 // linguistically appropriate 'ignore case'
#endif

	int len_s1 = MultiByteToWideChar(CP_UTF8, 0, s1.data(), (int)s1.size(), nullptr, 0);
	int len_s2 = MultiByteToWideChar(CP_UTF8, 0, s2.data(), (int)s2.size(), nullptr, 0);

	std::wstring str_s1(len_s1, L'\0');
	std::wstring str_s2(len_s2, L'\0');

	if (len_s1 != 0) MultiByteToWideChar(CP_UTF8, 0, s1.data(), (int)s1.size(), str_s1.data(), len_s1);
	if (len_s2 != 0) MultiByteToWideChar(CP_UTF8, 0, s2.data(), (int)s2.size(), str_s2.data(), len_s2);

	/* CompareStringEx takes UTF-16 strings, even in ANSI-builds. */
	if (_CompareStringEx != nullptr) {
		int result = _CompareStringEx(_cur_iso_locale, LINGUISTIC_IGNORECASE | SORT_DIGITSASNUMBERS, str_s1.data(), len_s1, str_s2.data(), len_s2, nullptr, nullptr, 0);
		if (result != 0) return result;
	}

	return CompareString(MAKELCID(_current_language->winlangid, SORT_DEFAULT), NORM_IGNORECASE, str_s1.data(), len_s1, str_s2.data(), len_s2);
}

/**
 * Search if a string is contained in another string using the current locale.