1 ;;; url-about.el --- Show internal URLs
3 ;; Copyright (C) 2001, 2004, 2005, 2006, 2007, 2008
4 ;; Free Software Foundation, Inc.
6 ;; Keywords: comm, data, processes, hypermedia
8 ;; This file is part of GNU Emacs.
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 3, or (at your option)
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.
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., 51 Franklin Street, Fifth Floor,
23 ;; Boston, MA 02110-1301, USA.
34 (defun url-probe-protocols ()
35 "Return a list of all potential URL schemes."
36 (or (get 'url-extension-protocols
'probed
)
37 (mapc (lambda (s) (url-scheme-get-property s
'name
))
38 (or (get 'url-extension-protocols
'schemes
)
39 (let ((schemes '("info" "man" "rlogin" "telnet"
40 "tn3270" "data" "snews")))
43 (if (string-match "url-\\(.*\\).el$" f
)
44 (push (match-string 1 f
) schemes
)))
45 (directory-files d nil
"^url-.*\\.el$")))
47 (put 'url-extension-protocols
'schemes schemes
)
50 (defvar url-scheme-registry
)
52 (defun url-about-protocols (url)
56 " <title>Supported Protocols</title>\n"
59 " <h1>Supported Protocols - URL v" url-version
"</h1>\n"
60 " <table width='100%' border='1'>\n"
67 (if (string= k
"proxy")
68 ;; Ignore the proxy setting... its magic!
71 ;; The name of the protocol
72 (insert " <td valign=top>" (or (url-scheme-get-property k
'name
) k
) "\n")
74 ;; Now the properties. Currently just asynchronous
75 ;; status, default port number, and proxy status.
76 (insert " <td valign=top>"
77 (if (url-scheme-get-property k
'asynchronous-p
) "As" "S")
79 (if (url-scheme-get-property k
'default-port
)
80 (format "Default Port: %d<br>\n"
81 (url-scheme-get-property k
'default-port
)) "")
82 (if (assoc k url-proxy-services
)
83 (format "Proxy: %s<br>\n" (assoc k url-proxy-services
)) ""))
84 ;; Now the description...
85 (insert " <td valign=top>"
86 (or (url-scheme-get-property k
'description
) "N/A"))))
87 (sort (let (x) (maphash (lambda (k v
) (push k x
)) url-scheme-registry
) x
) 'string-lessp
))
92 (defun url-about (url)
94 (let* ((item (downcase (url-filename url
)))
95 (func (intern (format "url-about-%s" item
))))
98 (set-buffer (generate-new-buffer " *about-data*"))
99 (insert "Content-type: text/plain\n\n")
102 (error "URL does not know about `%s'" item
))))
106 ;; arch-tag: 65dd7fca-db3f-4cb1-8026-7dd37d4a460e
107 ;;; url-about.el ends here