public static void CreateDir(IDir self, String unixPath) {
if (unixPath == null) return; // Already exists
if (unixPath.StartsWith("/")) {
CreateDir(GetRoot(self), unixPath.Substring(1));
return;
}
int p = unixPath.IndexOf('/');
String s1 = (p < 0) ? unixPath : unixPath.Substring(0, p);
String s2 = (p < 0) ? null : unixPath.Substring(1 + p);
if (s1 == ".") {
CreateDir(self, s2);
return;
}
if (s1 == "..") {
CreateDir(self.ParentDir, s2);
return;
}
for (int t = 0; t < 2; t++) {
IEnt o = self.FindReal(s1);
if (o is IDir) {
CreateDir((IDir)o, s2);
return;
}
else if (o != null) {
throw new MkdException("We knew \"" + o.Name + "\" is a file.");
}
self.CreateDirHere(s1);
if (s2 == null) return;
}
throw new MkdException("We can't create \"" + unixPath + "\".");
}