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1 | ;;; tramp-ftp.el --- Tramp convenience functions for Ange-FTP and EFS -*- coding: iso-8859-1; -*- |
2 | ||
8daea7fc | 3 | ;; Copyright (C) 2002, 2003 Free Software Foundation, Inc. |
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4 | |
5 | ;; Author: Michael Albinus <Michael.Albinus@alcatel.de> | |
6 | ;; Keywords: comm, processes | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
22 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | ;; Boston, MA 02111-1307, USA. | |
24 | ||
25 | ;;; Commentary: | |
26 | ||
27 | ;; Convenience functions for calling Ange-FTP (and maybe EFS, later on) | |
8daea7fc | 28 | ;; from Tramp. Most of them are displaced from tramp.el. |
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29 | |
30 | ;;; Code: | |
31 | ||
32 | (require 'tramp) | |
33 | ||
34 | (eval-when-compile | |
35 | (require 'cl) | |
36 | (require 'custom) | |
37 | ;; Emacs 19.34 compatibility hack -- is this needed? | |
38 | (or (>= emacs-major-version 20) | |
39 | (load "cl-seq"))) | |
40 | ||
41 | ;; Disable Ange-FTP from file-name-handler-alist. | |
42 | ;; To handle EFS, the following functions need to be dealt with: | |
43 | ;; | |
44 | ;; * dired-before-readin-hook contains efs-dired-before-readin | |
45 | ;; * file-name-handler-alist contains efs-file-handler-function | |
46 | ;; and efs-root-handler-function and efs-sifn-handler-function | |
47 | ;; * find-file-hooks contains efs-set-buffer-mode | |
48 | ;; | |
49 | ;; But it won't happen for EFS since the XEmacs maintainers | |
50 | ;; don't want to use a unified filename syntax. | |
51 | (defun tramp-disable-ange-ftp () | |
52 | "Turn Ange-FTP off. | |
53 | This is useful for unified remoting. See | |
54 | `tramp-file-name-structure-unified' and | |
55 | `tramp-file-name-structure-separate' for details. Requests suitable | |
56 | for Ange-FTP will be forwarded to Ange-FTP. Also see the variables | |
57 | `tramp-ftp-method', `tramp-default-method', and | |
58 | `tramp-default-method-alist'. | |
59 | ||
60 | This function is not needed in Emacsen which include Tramp, but is | |
61 | present for backward compatibility." | |
62 | (let ((a1 (rassq 'ange-ftp-hook-function file-name-handler-alist)) | |
63 | (a2 (rassq 'ange-ftp-completion-hook-function file-name-handler-alist))) | |
64 | (setq file-name-handler-alist | |
65 | (delete a1 (delete a2 file-name-handler-alist))))) | |
66 | (tramp-disable-ange-ftp) | |
8daea7fc | 67 | (eval-after-load "ange-ftp" '(tramp-disable-ange-ftp)) |
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68 | |
69 | ;; Define FTP method ... | |
70 | (defcustom tramp-ftp-method "ftp" | |
71 | "*When this method name is used, forward all calls to Ange-FTP." | |
72 | :group 'tramp | |
73 | :type 'string) | |
74 | ||
75 | ;; ... and add it to the method list. | |
76 | (add-to-list 'tramp-methods (cons tramp-ftp-method nil)) | |
77 | ||
78 | ;; Add some defaults for `tramp-default-method-alist' | |
79 | (add-to-list 'tramp-default-method-alist | |
8daea7fc | 80 | (list "\\`ftp\\." "" tramp-ftp-method)) |
4007ba5b | 81 | (add-to-list 'tramp-default-method-alist |
8daea7fc | 82 | (list "" "\\`\\(anonymous\\|ftp\\)\\'" tramp-ftp-method)) |
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83 | |
84 | ;; Add completion function for FTP method. | |
85 | (unless (memq system-type '(windows-nt)) | |
86 | (tramp-set-completion-function | |
87 | tramp-ftp-method | |
88 | '((tramp-parse-netrc "~/.netrc")))) | |
89 | ||
90 | (defun tramp-ftp-file-name-handler (operation &rest args) | |
91 | "Invoke the Ange-FTP handler for OPERATION. | |
92 | First arg specifies the OPERATION, second arg is a list of arguments to | |
93 | pass to the OPERATION." | |
94 | (save-match-data | |
95 | (or (boundp 'ange-ftp-name-format) | |
8daea7fc | 96 | (require 'ange-ftp)) |
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97 | (let ((ange-ftp-name-format |
98 | (list (nth 0 tramp-file-name-structure) | |
99 | (nth 3 tramp-file-name-structure) | |
100 | (nth 2 tramp-file-name-structure) | |
101 | (nth 4 tramp-file-name-structure)))) | |
102 | (cond | |
103 | ;; If argument is a symlink, 'file-directory-p` and 'file-exists-p` | |
104 | ;; call the traversed file recursively. So we cannot disable the | |
b25a52cc | 105 | ;; file-name-handler this case. |
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106 | ((memq operation '(file-directory-p file-exists-p)) |
107 | (apply 'ange-ftp-hook-function operation args)) | |
108 | ;; Normally, the handlers must be discarded | |
109 | (t (let* ((inhibit-file-name-handlers | |
110 | (list 'tramp-file-name-handler | |
111 | 'tramp-completion-file-name-handler | |
112 | (and (eq inhibit-file-name-operation operation) | |
113 | inhibit-file-name-handlers))) | |
114 | (inhibit-file-name-operation operation)) | |
115 | (apply 'ange-ftp-hook-function operation args))))))) | |
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116 | |
117 | (defun tramp-ftp-file-name-p (filename) | |
118 | "Check if it's a filename that should be forwarded to Ange-FTP." | |
119 | (let ((v (tramp-dissect-file-name filename))) | |
120 | (string= | |
121 | (tramp-find-method | |
122 | (tramp-file-name-multi-method v) | |
123 | (tramp-file-name-method v) | |
124 | (tramp-file-name-user v) | |
125 | (tramp-file-name-host v)) | |
126 | tramp-ftp-method))) | |
127 | ||
128 | (add-to-list 'tramp-foreign-file-name-handler-alist | |
129 | (cons 'tramp-ftp-file-name-p 'tramp-ftp-file-name-handler)) | |
130 | ||
131 | (provide 'tramp-ftp) | |
132 | ||
133 | ;;; TODO: | |
134 | ||
135 | ;; * In case of "/ftp:host:file" this works only for functions which | |
136 | ;; are defined in `tramp-file-name-handler-alist'. Call has to be | |
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137 | ;; pretended in `tramp-file-name-handler' otherwise. |
138 | ;; Furthermore, there are no backup files on FTP hosts. | |
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139 | ;; Worth further investigations. |
140 | ||
141 | ;;; tramp-ftp.el ends here |