Function InitKeyTranslator

Source/UserInput/keyTranslator.cpp:560–762

static std::vector<char> key_translation_memory;

void InitKeyTranslator() {
    keys.clear();
    key_translation_memory.resize(1024);
    std::vector<std::pair<int, uint32_t> > offsets;

    size_t cur_index = 0;
    for (unsigned int& i : SDL_SCANCODES) {
        const char* scancodename = SDL_GetScancodeName((SDL_Scancode)i);
        size_t memlen = strlen(scancodename) + 1;
        if (cur_index + memlen > key_translation_memory.size()) {
            key_translation_memory.resize(key_translation_memory.size() + 1024);
        }
        memcpy(&key_translation_memory[cur_index], scancodename, memlen);
        UTF8InPlaceLower(&key_translation_memory[cur_index]);
        offsets.push_back(std::pair<int, uint32_t>(cur_index, i));
        cur_index += memlen;
    }

    for (auto& offset : offsets) {
        keys.push_back(KeyPair(&key_translation_memory[offset.first], (SDL_Scancode)offset.second));
    }

    keys.push_back(KeyPair("backspace", SDL_SCANCODE_BACKSPACE));
    keys.push_back(KeyPair("tab", SDL_SCANCODE_TAB));
    keys.push_back(KeyPair("clear", SDL_SCANCODE_CLEAR));
    keys.push_back(KeyPair("return", SDL_SCANCODE_RETURN));
    keys.push_back(KeyPair("pause", SDL_SCANCODE_PAUSE));
    keys.push_back(KeyPair("esc", SDL_SCANCODE_ESCAPE));
    keys.push_back(KeyPair("space", SDL_SCANCODE_SPACE));
    // keys.push_back(KeyPair("!",SDL_SCANCODE_EXCLAIM));
    // keys.push_back(KeyPair("\"",SDL_SCANCODE_QUOTEDBL));
    // keys.push_back(KeyPair("#",SDL_SCANCODE_HASH));
    // keys.push_back(KeyPair("$",SDL_SCANCODE_DOLLAR));
    // keys.push_back(KeyPair("&",SDL_SCANCODE_AMPERSAND));
    // keys.push_back(KeyPair("\'",SDL_SCANCODE_QUOTE));
    // keys.push_back(KeyPair("(",SDL_SCANCODE_LEFTPAREN));
    // keys.push_back(KeyPair(")",SDL_SCANCODE_RIGHTPAREN));
    // keys.push_back(KeyPair("*",SDL_SCANCODE_ASTERISK));
    // keys.push_back(KeyPair("+",SDL_SCANCODE_PLUS));
    keys.push_back(KeyPair(",", SDL_SCANCODE_COMMA));
    keys.push_back(KeyPair("-", SDL_SCANCODE_MINUS));
    keys.push_back(KeyPair(".", SDL_SCANCODE_PERIOD));
    keys.push_back(KeyPair("/", SDL_SCANCODE_SLASH));
    keys.push_back(KeyPair("0", SDL_SCANCODE_0));
    keys.push_back(KeyPair("1", SDL_SCANCODE_1));
    keys.push_back(KeyPair("2", SDL_SCANCODE_2));
    keys.push_back(KeyPair("3", SDL_SCANCODE_3));
    keys.push_back(KeyPair("4", SDL_SCANCODE_4));
    keys.push_back(KeyPair("5", SDL_SCANCODE_5));
    keys.push_back(KeyPair("6", SDL_SCANCODE_6));
    keys.push_back(KeyPair("7", SDL_SCANCODE_7));
    keys.push_back(KeyPair("8", SDL_SCANCODE_8));
    keys.push_back(KeyPair("9", SDL_SCANCODE_9));
    // keys.push_back(KeyPair(":",SDL_SCANCODE_COLON));
    keys.push_back(KeyPair(";", SDL_SCANCODE_SEMICOLON));
    // keys.push_back(KeyPair("<",SDL_SCANCODE_LESS));
    keys.push_back(KeyPair("=", SDL_SCANCODE_EQUALS));
    // keys.push_back(KeyPair(">",SDL_SCANCODE_GREATER));