;;;
;;; Time-stamp: <06/02/05 20:40:10 noel>
;;;
;;; Copyright (C) 2005 by Noel Welsh.
;;;

;;; This library is free software; you can redistribute it
;;; and/or modify it under the terms of the GNU Lesser
;;; General Public License as published by the Free Software
;;; Foundation; either version 2.1 of the License, or (at
;;; your option) any later version.

;;; This library is distributed in the hope that it will be
;;; useful, but WITHOUT ANY WARRANTY; without even the
;;; implied warranty of MERCHANTABILITY or FITNESS FOR A
;;; PARTICULAR PURPOSE.  See the GNU Lesser General Public
;;; License for more details.

;;; You should have received a copy of the GNU Lesser
;;; General Public License along with this library; if not,
;;; write to the Free Software Foundation, Inc., 59 Temple
;;; Place, Suite 330, Boston, MA 02111-1307 USA

;;; Author: Noel Welsh <[email protected]>
;;
;;
;; Commentary:
(module file mzscheme

  (require (lib "plt-match.ss")
           (lib "file.ss"))

  (provide make-directory-tree)
  
  ;; make-directory-tree : (tree-of string) -> void
  (define (make-directory-tree tree)
    (define (tree-fold seed tree)
      (define (list->path head rest)
        (apply build-path (reverse (cons head rest))))
      (match tree
        [(? string? here)
         (make-directory* (list->path here seed))]
        [(list) (void)]
        [`(,(? string? head) (,children ...) . ,rest)
         (make-directory* (list->path head seed))
         (tree-fold (cons head seed) children)
         (tree-fold seed rest)]
        [`(,(? string? here) . ,rest)
         (make-directory* (list->path here seed))
         (tree-fold seed rest)]))
    (tree-fold null tree))

  )