/*Uses $LK,"DocPrint",A="MN:DocPrint"$() because updates
to within a tree while a tree is collapsed get
messed-up if "live" (like using ordinary Print.)
The insert point is confused by hiding of
data in collapsed trees.  Therefore, the window main
Doc is taken off-line by disabling preemption so there
are no screen updates until all data has been inserted.

There is a special Doc function which is also
available to take an Doc off-line.  See $LK,"DocPrintAtomic",A="MN:DocPrintAtomic"$.
For this example, however, I wanted to use DocPrint
and disabled Preemption myself.
*/

U0 TreeSub(CDoc *doc,CDirEntry *tempde)
{
  CDirEntry *tempde1;
  while (tempde) {
    tempde1=tempde->next;
    if (tempde->attr & RS_ATTR_DIR) {
      DocPrint(doc,"$$TR,\"\"$$");
      DocPrint(doc,"$$MA,T=\"%s\",LM=\"Cd(\\\"%s\\\");Dir;\n\"$$\n",
      tempde->name,tempde->full_name);
      if (tempde->sub) {
	DocPrint(doc,"$$ID,+2$$");
	TreeSub(doc,tempde->sub);
	DocPrint(doc,"$$ID,-2$$");
      }
    } else
      DocPrint(doc,"$$LK,\"%s\",A=\"FI:%s\"$$\n",
	tempde->name,tempde->full_name);
    //Note there is also a routine
    //to delete an entire CDirEntry tree.
    //See $LK,"DirTreeDel",A="MN:DirTreeDel"$().
    DirEntryDel(tempde);
    tempde=tempde1;
  }
}

U0 TreeDemo()
{
  I64 fuf_flags=0;
  CDoc *doc=DocNew;
  ScanFlags(&fuf_flags,Define("ST_FILE_UTIL_FLAGS"),"+r");
  DocPrint(doc,"$$TR-C,\"\"$$\n");
  DocPrint(doc,"$$ID,+2$$");
  TreeSub(doc,FilesFind("/*",fuf_flags));
  DocPrint(doc,"$$ID,-2$$");
  DocInsDoc(DocPut,doc);
  DocDel(doc);
}
 
TreeDemo;