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