lisp/url/url-nfs.el

   1 ;;; url-nfs.el --- NFS URL interface
   2
   3 ;; Copyright (C) 1996-1999, 2004-2016 Free Software Foundation, Inc.
   4
   5 ;; Keywords: comm, data, processes
   6
   7 ;; This file is part of GNU Emacs.
   8 ;;
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 ;;; Commentary:
  23
  24 ;;; Code:
  25
  26 (require 'url-parse)
  27 (require 'url-file)
  28
  29 (defcustom url-nfs-automounter-directory-spec "file:/net/%h%f"
  30   "How to invoke the NFS automounter.  Certain % sequences are recognized.
  31
  32 %h -- the hostname of the NFS server
  33 %n -- the port # of the NFS server
  34 %u -- the username to use to authenticate
  35 %p -- the password to use to authenticate
  36 %f -- the filename on the remote server
  37 %% -- a literal %
  38
  39 Each can be used any number of times."
  40   :group 'url
  41   :type 'string)
  42
  43 (defun url-nfs-unescape (format host port user pass file)
  44   (with-current-buffer (get-buffer-create " *nfs-parse*")
  45     (erase-buffer)
  46     (insert format)
  47     (goto-char (point-min))
  48     (while (re-search-forward "%\\(.\\)" nil t)
  49        (let ((escape (aref (match-string 1) 0)))
  50          (replace-match "" t t)
  51          (pcase escape
  52            (?% (insert "%"))
  53            (?h (insert host))
  54            (?n (insert (or port "")))
  55            (?u (insert (or user "")))
  56            (?p (insert (or pass "")))
  57            (?f (insert (or file "/"))))))
  58     (buffer-string)))
  59
  60 (defun url-nfs-build-filename (url)
  61   (let* ((host (url-host url))
  62          (port (url-port url))
  63          (pass (url-password url))
  64          (user (url-user url))
  65          (file (url-filename url)))
  66     (url-generic-parse-url
  67      (url-nfs-unescape url-nfs-automounter-directory-spec
  68                        host port user pass file))))
  69
  70 (defun url-nfs (url callback cbargs)
  71   (url-file (url-nfs-build-filename url) callback cbargs))
  72
  73 (defmacro url-nfs-create-wrapper (method args)
  74   `(defun ,(intern (format "url-nfs-%s" method)) ,args
  75      ,(format "NFS URL wrapper around `%s' call." method)
  76      (setq url (url-nfs-build-filename url))
  77      (and url (,(intern (format "url-file-%s" method))
  78                ,@(remove '&rest (remove '&optional args))))))
  79
  80 (url-nfs-create-wrapper file-exists-p (url))
  81 (url-nfs-create-wrapper file-attributes (url &optional id-format))
  82 (url-nfs-create-wrapper file-symlink-p (url))
  83 (url-nfs-create-wrapper file-readable-p (url))
  84 (url-nfs-create-wrapper file-writable-p (url))
  85 (url-nfs-create-wrapper file-executable-p (url))
  86 (url-nfs-create-wrapper directory-files (url &optional full match nosort))
  87 (url-nfs-create-wrapper file-truename (url &optional counter prev-dirs))
  88
  89 (provide 'url-nfs)
  90
  91 ;;; url-nfs.el ends here