Method PopulateList

src/openrct2-ui/windows/LoadSave.cpp:168–304

        }

        void PopulateList(const u8string& directory, std::string_view extensionPattern)
        {
            const auto absoluteDirectory = Path::GetAbsolute(directory);
            String::safeUtf8Copy(_directory, absoluteDirectory.c_str(), std::size(_directory));
            // Note: This compares the pointers, not values
            _extensionPattern = extensionPattern;

            _listItems.clear();

            int32_t drives = Platform::GetDrives();
            if (directory.empty() && drives)
            {
                // List Windows drives
                setWidgetDisabled(WIDX_NEW_FOLDER, true);
                setWidgetDisabled(WIDX_PARENT_FOLDER, true);
                static constexpr auto NumDriveLetters = 26;
                for (int32_t x = 0; x < NumDriveLetters; x++)
                {
                    if (drives & (1 << x))
                    {
                        // If the drive exists, list it
                        LoadSaveListItem newListItem;
                        newListItem.path = std::string(1, 'A' + x) + ":" PATH_SEPARATOR;
                        newListItem.name = newListItem.path;
                        newListItem.type = FileType::directory;

                        _listItems.push_back(std::move(newListItem));
                    }
                }
            }
            else
            {
                // Remove the separator at the end of the path, if present
                String::safeUtf8Copy(_parentDirectory, absoluteDirectory.c_str(), std::size(_parentDirectory));
                if (_parentDirectory[strlen(_parentDirectory) - 1] == *PATH_SEPARATOR
                    || _parentDirectory[strlen(_parentDirectory) - 1] == '/')
                    _parentDirectory[strlen(_parentDirectory) - 1] = '\0';

                // Remove everything past the now last separator
                char* ch = strrchr(_parentDirectory, *PATH_SEPARATOR);
                char* posix_ch = strrchr(_parentDirectory, '/');
                ch = ch < posix_ch ? posix_ch : ch;
                if (ch != nullptr)
                {
                    *(ch + 1) = '\0';
                }
                else if (drives)
                {
                    // If on Windows, clear the entire path to show the drives
                    _parentDirectory[0] = '\0';
                }
                else
                {
                    // Else, go to the root directory
                    snprintf(_parentDirectory, MAX_PATH, "%c", *PATH_SEPARATOR);
                }

                // Disable the Up button if the current directory is the root directory