Once you locate the source root directory (there are several ways of doing so) you can use the following methods to create the directory structure for a package. Note that they will only create a new directory if it does not already exist. Also, be sure to use these inside a WriteCommandAction.
public static PsiDirectory createDirectory(PsiDirectory parent, String name)
throws IncorrectOperationException {
PsiDirectory result = null;
for (PsiDirectory dir : parent.getSubdirectories()) {
if (dir.getName().equalsIgnoreCase(name)) {
result = dir;
break;
}
}
if (null == result) {
result = parent.createSubdirectory(name);
}
return result;
} // createDirectory()
public static PsiDirectory createPackage(PsiDirectory sourceDir, String qualifiedPackage)
throws IncorrectOperationException {
PsiDirectory parent = sourceDir;
StringTokenizer token = new StringTokenizer(qualifiedPackage, ".");
while (token.hasMoreTokens()) {
String dirName = token.nextToken();
parent = createDirectory(parent, dirName);
}
return parent;
} // createPackage()
