lisp/url/url-nfs.el

   1 ;;; url-nfs.el --- NFS URL interface
   2 ;; Author: $Author: fx $
   3 ;; Created: $Date: 2001/05/22 16:10:50 $
   4 ;; Version: $Revision: 1.3 $
   5 ;; Keywords: comm, data, processes
   6
   7 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
   8 ;;; Copyright (c) 1996 by William M. Perry <wmperry@cs.indiana.edu>
   9 ;;; Copyright (c) 1996 - 1999 Free Software Foundation, Inc.
  10 ;;;
  11 ;;; This file is part of GNU Emacs.
  12 ;;;
  13 ;;; GNU Emacs is free software; you can redistribute it and/or modify
  14 ;;; it under the terms of the GNU General Public License as published by
  15 ;;; the Free Software Foundation; either version 2, or (at your option)
  16 ;;; any later version.
  17 ;;;
  18 ;;; GNU Emacs is distributed in the hope that it will be useful,
  19 ;;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;;; GNU General Public License for more details.
  22 ;;;
  23 ;;; You should have received a copy of the GNU General Public License
  24 ;;; along with GNU Emacs; see the file COPYING.  If not, write to the
  25 ;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  26 ;;; Boston, MA 02111-1307, USA.
  27 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  28
  29 (eval-when-compile (require 'cl))
  30 (require 'url-parse)
  31 (require 'url-file)
  32
  33 (defvar url-nfs-automounter-directory-spec
  34   "file:/net/%h%f"
  35   "*How to invoke the NFS automounter.  Certain % sequences are recognized.
  36
  37 %h -- the hostname of the NFS server
  38 %n -- the port # of the NFS server
  39 %u -- the username to use to authenticate
  40 %p -- the password to use to authenticate
  41 %f -- the filename on the remote server
  42 %% -- a literal %
  43
  44 Each can be used any number of times.")
  45
  46 (defun url-nfs-unescape (format host port user pass file)
  47   (save-excursion
  48     (set-buffer (get-buffer-create " *nfs-parse*"))
  49     (erase-buffer)
  50     (insert format)
  51     (goto-char (point-min))
  52     (while (re-search-forward "%\\(.\\)" nil t)
  53        (let ((escape (aref (match-string 1) 0)))
  54          (replace-match "" t t)
  55          (case escape
  56            (?% (insert "%"))
  57            (?h (insert host))
  58            (?n (insert (or port "")))
  59            (?u (insert (or user "")))
  60            (?p (insert (or pass "")))
  61            (?f (insert (or file "/"))))))
  62     (buffer-string)))
  63
  64 (defun url-nfs-build-filename (url)
  65   (let* ((host (url-host url))
  66          (port (string-to-int (url-port url)))
  67          (pass (url-password url))
  68          (user (url-user url))
  69          (file (url-filename url)))
  70     (url-generic-parse-url
  71      (url-nfs-unescape url-nfs-automounter-directory-spec
  72                        host port user pass file))))
  73
  74 (defun url-nfs (url callback cbargs)
  75   (url-file (url-nfs-build-filename url) callback cbargs))
  76
  77 (defmacro url-nfs-create-wrapper (method args)
  78   (` (defun (, (intern (format "url-nfs-%s" method))) (, args)
  79        (, (format "NFS URL wrapper around `%s' call." method))
  80        (setq url (url-nfs-build-filename url))
  81        (and url ((, (intern (format "url-file-%s" method)))
  82                  (,@ (remove '&rest (remove '&optional args))))))))
  83
  84 (url-nfs-create-wrapper file-exists-p (url))
  85 (url-nfs-create-wrapper file-attributes (url))
  86 (url-nfs-create-wrapper file-symlink-p (url))
  87 (url-nfs-create-wrapper file-readable-p (url))
  88 (url-nfs-create-wrapper file-writable-p (url))
  89 (url-nfs-create-wrapper file-executable-p (url))
  90 (if (featurep 'xemacs)
  91     (progn
  92       (url-nfs-create-wrapper directory-files (url &optional full match nosort files-only))
  93       (url-nfs-create-wrapper file-truename (url &optional default)))
  94   (url-nfs-create-wrapper directory-files (url &optional full match nosort))
  95   (url-nfs-create-wrapper file-truename (url &optional counter prev-dirs)))
  96
  97 (provide 'url-nfs)