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;;; directory.lisp
;;;
;;; Copyright (C) 2004-2007 Peter Graves
;;; Copyright (C) 2008 Ville Voutilainen
;;; $Id$
;;;
;;; 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.
(in-package "SYSTEM")
(defun pathname-as-file (pathname)
(let ((directory (pathname-directory pathname)))
(make-pathname :host nil
:device (pathname-device pathname)
:directory (butlast directory)
:name (car (last directory))
:type nil
:version nil)))
(defun wild-inferiors-p (component)
(eq component :wild-inferiors))
(defun list-directories-with-wildcards (pathname
wild-inferiors-found
resolve-symlinks)
(let* ((directory (pathname-directory pathname))
(first-wild-inferior (and (not wild-inferiors-found)
(position-if #'wild-inferiors-p directory)))
(first-wild (position-if #'wild-p directory))
(wild (when (or first-wild-inferior first-wild)
(nthcdr (or first-wild-inferior first-wild) directory)))
(non-wild (if (or first-wild-inferior first-wild)
(nbutlast directory
(- (length directory)
(or first-wild-inferior first-wild)))
directory))
(newpath (make-pathname :directory non-wild
:name nil :type nil :defaults pathname))
(entries (list-directory newpath resolve-symlinks)))
(when (not (or wild wild-inferiors-found)) ;; no further recursion necessary
(return-from list-directories-with-wildcards entries))
(let ((inferior-entries (when (or wild-inferiors-found first-wild-inferior) entries)))
(nconc
(mapcan (lambda (entry)
(when (pathname-match-p (pathname entry) pathname)
(list entry)))
inferior-entries)
(mapcan (lambda (entry)
(let* ((pathname (pathname entry))
(directory (pathname-directory pathname))
(rest-wild (cdr wild)))
(unless (pathname-name pathname)
(when (pathname-match-p (first (last directory))
(cond ((eql (car wild) :wild)
"*")
((eql (car wild) :wild-inferiors)
"*")
(wild
(car wild))
(t "")))
(when (and
(not (or first-wild-inferior
wild-inferiors-found))
rest-wild)
(setf directory (nconc directory rest-wild)))
(let ((recurse (make-pathname :directory directory
:defaults newpath)))
(when (not (equal recurse newpath))
(list-directories-with-wildcards
recurse
(or first-wild-inferior wild-inferiors-found)
resolve-symlinks)))))))
entries)))))
(defun directory (pathspec &key (resolve-symlinks nil))
"Determines which, if any, files that are present in the file system have names matching PATHSPEC, and returns a fresh list of pathnames corresponding to the potential truenames of those files.
With :RESOLVE-SYMLINKS set to nil, not all pathnames returned may
correspond to an existing file. Symbolic links are considered to be
be valid entries even if they do not currently have a valid file or
directory as a target. Therefore, subsequent CL:TRUENAME call on
individual pathnames in the list may signal an error, i.e. the
pathnames have been constructed as truenames, without calling the
entire resolution routine of CL:TRUENAME.
If called with :RESOLVE-SYMLINKS set to T, and any of the pathnames
have truenames which do not exist, this routine will signal a file
error to its caller."
(let ((pathname (merge-pathnames pathspec)))
(when (logical-pathname-p pathname)
(setq pathname (translate-logical-pathname pathname)))
(if (or (position #\* (namestring pathname))
(wild-pathname-p pathname))
(if (pathname-jar-p pathname)
(match-wild-jar-pathname pathname)
(let ((namestring (directory-namestring pathname)))
(when (and namestring (> (length namestring) 0))
(when (featurep :windows)
(let ((host (pathname-host pathname))
(device (pathname-device pathname)))
(cond
((and host device)
(setq namestring
(concatenate 'string "//" host "/" device namestring)))
(device
(setq namestring
(concatenate 'string device ":" namestring))))))
(let ((entries (list-directories-with-wildcards
namestring nil resolve-symlinks))
(matching-entries ()))
(dolist (entry entries)
(when
(or
(and
(file-directory-p entry :wild-error-p nil)
(pathname-match-p (file-namestring (pathname-as-file entry))
(file-namestring pathname)))
(pathname-match-p (or (file-namestring entry) "")
(file-namestring pathname)))
(push
(if resolve-symlinks
(truename entry)
;; Normalize nil DEVICE to :UNSPECIFIC under non-Windows
;; fixes ANSI DIRECTORY.[67]
(if (and (not (find :windows *features*))
(not (pathname-device entry)))
(make-pathname :defaults entry :device :unspecific)
entry))
matching-entries)))
matching-entries))))
;; Not wild.
(let ((truename (probe-file pathname)))
(if truename
(list (pathname truename))
nil)))))
