Function StringToUpper

teapots/textured-teapot/src/main/cpp/AssetUtil.cpp:26–30

#define IS_LOW_CHAR(c) ((c) >= 'a' && (c) <= 'z')
#define TO_UPPER_CHAR(c) (c + 'A' - 'a')
void StringToUpper(std::string& str) {
  for (auto& ch : str) {
    if (IS_LOW_CHAR(ch)) ch = TO_UPPER_CHAR(ch);
  }
}
bool AssetEnumerateFileType(AAssetManager* assetManager, const char* type,
                            std::vector<std::string>& files) {
  if (!assetManager || !type || !*type) return false;