1 ;;; tramp-efs.el --- Make EFS a foreign method in Tramp
3 ;; Copyright (C) 2003-2015 Free Software Foundation, Inc.
5 ;; Author: Kai Großjohann <kai.grossjohann@gmx.net>
6 ;; Keywords: comm, processes
9 ;; This file 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.
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.
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/>.
24 ;; This file provides glue between Tramp and EFS. EFS is hooked into
25 ;; Tramp as a foreign method. Most of this file has been snarfed from
26 ;; tramp-ftp.el, which does the same for Tramp and Ange-FTP.
32 ;; Pacify byte-compiler.
33 (defvar efs-path-format-string)
34 (defvar efs-path-format-without-user)
35 (defvar efs-path-host-format)
36 (defvar efs-path-regexp)
37 (defvar efs-path-root-regexp)
38 (defvar efs-path-user-at-host-format)
39 (defvar package-get-download-sites)
42 (defconst tramp-efs-method "ftp"
43 "Name of the method invoking EFS.")
45 ;; The EFS name format is somewhat restricted. EFS assumes that the
46 ;; first pair of parentheses is the user and the second is the host.
47 ;; It assumes that there is one character after the host name, and
48 ;; then the localname part follows. See function `efs-ftp-path' for
49 ;; the code. If the first pair of parentheses doesn't match anything,
50 ;; then it assumes that the user is not given. Therefore, we need to
51 ;; be quite careful with the \(...\) constructs we use in our regexes.
53 (defvar tramp-efs-method-given nil
54 "Method tag is given in filename.
55 To be set in `tramp-efs-file-name-handler'.")
57 (defvar tramp-efs-method-regexp
58 (concat tramp-prefix-regexp
59 (regexp-quote tramp-efs-method)
60 tramp-postfix-method-regexp)
61 "Regexp indicating method tag.")
63 (defun tramp-efs-path-regexp ()
64 "Tramp uses this value for `efs-path-regexp'."
65 (concat tramp-prefix-regexp
66 (when tramp-efs-method-given
68 (regexp-quote tramp-efs-method)
69 tramp-postfix-method-regexp))
70 "\\(" tramp-user-regexp tramp-postfix-user-regexp "\\)?"
71 "\\(" tramp-host-with-port-regexp "\\)"
72 tramp-postfix-host-regexp
73 "\\(" tramp-localname-regexp "\\)"))
75 (defun tramp-efs-path-format-string ()
76 "Tramp uses this value for `efs-path-format-string'."
77 (concat tramp-prefix-format
78 (when tramp-efs-method-given
79 (concat tramp-efs-method tramp-postfix-method-format))
80 "%s" tramp-postfix-user-format
81 "%s" tramp-postfix-host-format
84 (defun tramp-efs-path-format-without-user ()
85 "Tramp uses this value for `efs-path-format-without-user'."
86 (concat tramp-prefix-format
87 (when tramp-efs-method-given
88 (concat tramp-efs-method tramp-postfix-method-format))
89 "%s" tramp-postfix-host-format
92 (defun tramp-efs-path-user-at-host-format ()
93 "Tramp uses this value for `efs-path-user-at-host-format'."
94 (concat "%s" tramp-postfix-user-format
95 "%s" tramp-postfix-host-format))
97 (defun tramp-efs-path-host-format ()
98 "Tramp uses this value for `efs-path-host-format'."
99 (concat "%s" tramp-postfix-host-format))
101 (defun tramp-efs-path-root-regexp ()
102 "Tramp uses this value for `efs-path-root-regexp'."
103 (concat tramp-prefix-regexp
104 (when tramp-efs-method-given
106 (regexp-quote tramp-efs-method)
107 tramp-postfix-method-regexp))
108 "\\(" tramp-user-regexp tramp-postfix-user-regexp "\\)?"
109 "\\(" tramp-host-with-port-regexp "\\)"
110 tramp-postfix-host-regexp))
112 ;; Still need to do `efs-path-root-short-circuit-regexp'.
114 ;; Disable EFS from file-name-handler-alist.
116 ;; There is still an entry for efs-sifn-handler-function
117 ;; in file-name-handler-alist that I don't know how to deal with.
119 (defun tramp-disable-efs ()
121 This is useful for unified remoting. See
122 `tramp-file-name-structure' for details. Requests suitable for
123 EFS will be forwarded to EFS. Also see the variables
124 `tramp-efs-method', `tramp-default-method', and
125 `tramp-default-method-alist'.
127 This function is not needed in Emacsen which include Tramp, but is
128 present for backward compatibility."
129 (let ((a1 (rassq 'efs-file-handler-function
130 file-name-handler-alist))
131 (a2 (rassq 'efs-root-handler-function
132 file-name-handler-alist))
133 (a3 (rassq 'remote-path-file-handler-function
134 file-name-handler-alist)))
135 (setq file-name-handler-alist
136 (delete a1 (delete a2 (delete a3 file-name-handler-alist))))))
140 (eval-after-load "efs" '(tramp-disable-efs))
141 (eval-after-load "efs-fnh" '(tramp-disable-efs))
144 (when (featurep 'xemacs)
145 ;; Add EFS method to the method list.
146 (add-to-list 'tramp-methods (cons tramp-efs-method nil))
148 ;; Add some defaults for `tramp-default-method-alist'.
149 (add-to-list 'tramp-default-method-alist
150 (list "\\`ftp\\." nil tramp-efs-method))
151 (add-to-list 'tramp-default-method-alist
152 (list nil "\\`\\(anonymous\\|ftp\\)\\'" tramp-efs-method)))
154 (when (featurep 'xemacs)
155 ;; Add all XEmacs download sites to `tramp-default-method-alist'.
156 ;; The settings above should be sufficient, but it's better to make
158 (when (listp package-get-download-sites)
162 'tramp-default-method-alist
163 (list (concat "\\`" (nth 1 x) "\\'")
164 "\\`anonymous\\'" tramp-efs-method))))
165 package-get-download-sites)))
167 ;; Add completion function for FTP method.
169 (eval-after-load 'tramp
170 '(tramp-set-completion-function
172 '((tramp-parse-netrc "~/.netrc"))))
175 (defun tramp-efs-file-name-handler (operation &rest args)
176 "Invoke the EFS handler for OPERATION.
177 First arg specifies the OPERATION, second args is a list of arguments to
178 pass to the OPERATION."
180 (or (boundp 'efs-path-regexp)
183 ;; Check whether the method is given in a filename.
184 (setq tramp-efs-method-given nil)
187 (string-match tramp-efs-method-regexp x)
188 (setq tramp-efs-method-given t)))
191 (let ((efs-path-regexp (tramp-efs-path-regexp))
192 (efs-path-format-string (tramp-efs-path-format-string))
193 (efs-path-format-without-user (tramp-efs-path-format-without-user))
194 (efs-path-user-at-host-format (tramp-efs-path-user-at-host-format))
195 (efs-path-host-format (tramp-efs-path-host-format))
196 (efs-path-root-regexp (tramp-efs-path-root-regexp)))
198 ;; If argument is a symlink, `file-directory-p' and
199 ;; `file-exists-p' call the traversed file recursively. So we
200 ;; cannot disable the file-name-handler this case.
201 ((memq operation '(file-directory-p file-exists-p))
202 (apply 'efs-file-handler-function operation args))
203 ;; Normally, the handlers must be discarded
204 (t (let* ((inhibit-file-name-handlers
205 (list 'tramp-file-name-handler
206 'tramp-completion-file-name-handler
207 (and (eq inhibit-file-name-operation operation)
208 inhibit-file-name-handlers)))
209 (inhibit-file-name-operation operation))
210 (apply 'efs-file-handler-function operation args)))))))
212 ;; This function is called even in case the filename doesn't fit Tramp
213 ;; syntax (see defadvice of `efs-dired-before-readin' and
214 ;; `efs-set-buffer-mode'). So a syntax check must be performed first;
215 ;; otherwise `tramp-dissect-file-name' returns with an error.
216 ;; It must be a `defsubst' in order to push the whole code into
217 ;; tramp-loaddefs.el. Otherwise, there would be recursive autoloading.
219 (defsubst tramp-efs-file-name-p (filename)
220 "Check if it's a filename that should be forwarded to EFS."
221 (when (string-match (nth 0 tramp-file-name-structure) filename)
222 (string= (tramp-file-name-method (tramp-dissect-file-name filename))
226 (when (featurep 'xemacs)
227 (add-to-list 'tramp-foreign-file-name-handler-alist
228 (cons 'tramp-efs-file-name-p 'tramp-efs-file-name-handler)))
230 ;; Deal with other EFS hooks.
231 ;; * dired-before-readin-hook contains efs-dired-before-readin
232 ;; * find-file-hooks contains efs-set-buffer-mode
234 (defadvice efs-dired-before-readin (around tramp-efs activate)
235 "Do nothing for non-EFS names."
236 (when (tramp-efs-file-name-p default-directory)
239 (defadvice efs-set-buffer-mode (around tramp-efs activate)
240 "Do nothing for non-EFS names."
241 (when (tramp-efs-file-name-p buffer-file-name)
244 (add-hook 'tramp-unload-hook
246 (unload-feature 'tramp-efs 'force)))
249 ;;; tramp-efs.el ends here