root/trunk/lisp/url/url-nfs.el

;;; url-nfs.el --- NFS URL interface

;; Copyright (C) 1996, 1997, 1998, 1999, 2004,
;;   2005, 2006, 2007, 2008 Free Software Foundation, Inc.

;; Keywords: comm, data, processes

;; This file is part of GNU Emacs.
;;
;; GNU Emacs 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 3, or (at your option)
;; any later version.
;;
;; GNU Emacs 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 GNU Emacs; see the file COPYING.  If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.

;;; Commentary:

;;; Code:

(eval-when-compile (require 'cl))
(require 'url-parse)
(require 'url-file)

(defvar url-nfs-automounter-directory-spec
  "file:/net/%h%f"
  "*How to invoke the NFS automounter.  Certain % sequences are recognized.

%h -- the hostname of the NFS server
%n -- the port # of the NFS server
%u -- the username to use to authenticate
%p -- the password to use to authenticate
%f -- the filename on the remote server
%% -- a literal %

Each can be used any number of times.")

(defun url-nfs-unescape (format host port user pass file)
  (save-excursion
    (set-buffer (get-buffer-create " *nfs-parse*"))
    (erase-buffer)
    (insert format)
    (goto-char (point-min))
    (while (re-search-forward "%\\(.\\)" nil t)
       (let ((escape (aref (match-string 1) 0)))
         (replace-match "" t t)
         (case escape
           (?% (insert "%"))
           (?h (insert host))
           (?n (insert (or port "")))
           (?u (insert (or user "")))
           (?p (insert (or pass "")))
           (?f (insert (or file "/"))))))
    (buffer-string)))

(defun url-nfs-build-filename (url)
  (let* ((host (url-host url))
         (port (url-port url))
         (pass (url-password url))
         (user (url-user url))
         (file (url-filename url)))
    (url-generic-parse-url
     (url-nfs-unescape url-nfs-automounter-directory-spec
                       host port user pass file))))

(defun url-nfs (url callback cbargs)
  (url-file (url-nfs-build-filename url) callback cbargs))

(defmacro url-nfs-create-wrapper (method args)
  `(defun ,(intern (format "url-nfs-%s" method)) ,args
     ,(format "NFS URL wrapper around `%s' call." method)
     (setq url (url-nfs-build-filename url))
     (and url (,(intern (format "url-file-%s" method))
               ,@(remove '&rest (remove '&optional args))))))

(url-nfs-create-wrapper file-exists-p (url))
(url-nfs-create-wrapper file-attributes (url &optional id-format))
(url-nfs-create-wrapper file-symlink-p (url))
(url-nfs-create-wrapper file-readable-p (url))
(url-nfs-create-wrapper file-writable-p (url))
(url-nfs-create-wrapper file-executable-p (url))
(url-nfs-create-wrapper directory-files (url &optional full match nosort))
(url-nfs-create-wrapper file-truename (url &optional counter prev-dirs))

(provide 'url-nfs)

;; arch-tag: cdf9c9ba-b7d2-4c29-8b48-7ae9bbc0d437
;;; url-nfs.el ends here