gistfile1.txt

_NODISCARD inline unique_ptr<wchar_t[]> _Get_cleaned_symlink_target(const path& _To) noexcept
	{	// transforms /s in the root-name to \s, and all other directory-separators into single \s
		// example: a/\/b -> a\b
		// example: //server/a////////b////////c////////d -> \\server\a\b\c\d
	const auto& _To_str = _To.native();
	// protected from overflow by wstring's max_size cap:
	unique_ptr<wchar_t[]> _Cleaned_link(::new (nothrow) wchar_t[_To_str.size() + 1]);
	if (!_Cleaned_link)
		{
		return (_Cleaned_link);
		}

	const auto _First = _To_str.c_str();
	const auto _Last = _First + _To_str.size();
	auto _Next = _Find_root_name_end(_First, _Last);
	auto _Dest = _STD replace_copy_if(_First, _Next, _Cleaned_link.get(), _Is_slash, L'\\');
	for (;;)
		{
		const wchar_t _Ch = *_Next;
		if (_Is_slash(_Ch))
			{
			*_Dest = L'\\';
			do
				{
				++_Next;
				}
			while (_Is_slash(*_Next));
			}
		else
			{
			*_Dest = _Ch;
			if (_Ch == L'\0')
				{
				break;
				}

			++_Next;
			}

		++_Dest;
		}

	return (_Cleaned_link);
	}