plString cdUp(plString path) {
// Check for root paths, we can't go up from there!
#ifdef WIN32
if (path.mid(1) == ":\\")
return path;
#else
if (path == "/")
return path;
#endif
// Not very robust, but it works for one level of parent scanning
if (path.empty())
return ".." PATHSEPSTR;
// Strip the ending slash, if necessary, and then go up one dir
if (path[path.len()-1] == PATHSEP)
path = path.left(path.len() - 1);
plString up = path.beforeLast(PATHSEP);
if (path[0] == PATHSEP) {
// Absolute path specified -- make sure we keep it that way
return up + PATHSEP;
} else {
// Relative path specified
return up.empty() ? "" : up + PATHSEP;
}
}
