36   struct stat st;  in FileExists()  local
37   return stat(path.c_str(), &st) == 0;  in FileExists()
45   struct stat st;  in DirectoryExists()  local
46   if (stat(path.c_str(), &st) == -1) {  in DirectoryExists()
49   if ((st.st_mode & S_IFMT) != S_IFDIR) {  in DirectoryExists()
98   struct stat st;  in FileSize()  local
99   if (stat(path.c_str(), &st) == -1) {  in FileSize()
102   return st.st_size;  in FileSize()
107   struct stat st;  in FileModificationTime()  local
108   if (stat(path.c_str(), &st) == -1) {  in FileModificationTime()
111   std::chrono::seconds seconds(st.st_mtim.tv_sec);  in FileModificationTime()