org.armedbear.lisp.ensure-directories-exist.lisp Maven / Gradle / Ivy
;;; ensure-directories-exist.lisp
;;;
;;; Copyright (C) 2004-2007 Peter Graves
;;; $Id$
;;;
;;; This program is free software; you can redistribute it and/or
;;; modify it under the terms of the GNU General Public License
;;; as published by the Free Software Foundation; either version 2
;;; of the License, or (at your option) any later version.
;;;
;;; This program 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 General Public License for more details.
;;;
;;; You should have received a copy of the GNU General Public License
;;; along with this program; if not, write to the Free Software
;;; Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
;;;
;;; As a special exception, the copyright holders of this library give you
;;; permission to link this library with independent modules to produce an
;;; executable, regardless of the license terms of these independent
;;; modules, and to copy and distribute the resulting executable under
;;; terms of your choice, provided that you also meet, for each linked
;;; independent module, the terms and conditions of the license of that
;;; module. An independent module is a module which is not derived from
;;; or based on this library. If you modify this library, you may extend
;;; this exception to your version of the library, but you are not
;;; obligated to do so. If you do not wish to do so, delete this
;;; exception statement from your version.
;;; Adapted from SBCL.
(in-package "SYSTEM")
(defun ensure-directories-exist (pathspec &key (verbose nil))
(let ((pathname (pathname pathspec))
(created-p nil))
;;; CLHS: Function ENSURE-DIRECTORIES-EXIST "An error of type
;;; file-error is signaled if the host, device, or directory part of
;;; pathspec is wild."
(when (or (wild-pathname-p pathname :host)
(wild-pathname-p pathname :device)
(wild-pathname-p pathname :directory))
(error 'file-error
:format-control "Bad place for a wild HOST, DEVICE, or DIRECTORY component."
:pathname pathname))
(let ((dir (pathname-directory pathname)))
(loop :for i :from 1 :upto (length dir)
:doing (let ((newpath (make-pathname
:host (pathname-host pathname)
:device (if (pathname-device pathname)
(pathname-device pathname)
:unspecific)
:directory (subseq dir 0 i))))
(unless (probe-directory newpath)
(when verbose
(fresh-line)
(format *standard-output*
"Creating directory of pathname ~A.~&"
newpath))
(mkdir newpath)
(unless (probe-directory newpath)
(error 'file-error
:pathname newpath
:format-control "Can't ensure directory~& ~S ~&ancestor of~& ~S."
:format-arguments (list newpath pathname)))
(setq created-p t)))))
(values pathname created-p)))