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Diffstat (limited to 'lisp/url/url-about.el')
| -rw-r--r-- | lisp/url/url-about.el | 100 |
1 files changed, 100 insertions, 0 deletions
diff --git a/lisp/url/url-about.el b/lisp/url/url-about.el new file mode 100644 index 00000000000..4fbf2083fae --- /dev/null +++ b/lisp/url/url-about.el @@ -0,0 +1,100 @@ +;;; url-about.el --- Show internal URLs +;; Author: $Author: wmperry $ +;; Created: $Date: 2001/11/24 22:30:21 $ +;; Version: $Revision: 1.1 $ +;; Keywords: comm, data, processes, hypermedia + +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +;;; Copyright (c) 2001 Free Software Foundation, Inc. +;;; +;;; This file is part of GNU Emacs. +;;; +;;; GNU Emacs is free software; you can redistribute it and/or modify +;;; it under the terms of the GNU General Public License as published by +;;; the Free Software Foundation; either version 2, or (at your option) +;;; any later version. +;;; +;;; GNU Emacs is distributed in the hope that it will be useful, +;;; but WITHOUT ANY WARRANTY; without even the implied warranty of +;;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +;;; GNU General Public License for more details. +;;; +;;; You should have received a copy of the GNU General Public License +;;; along with GNU Emacs; see the file COPYING. If not, write to the +;;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, +;;; Boston, MA 02111-1307, USA. +;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; +(eval-when-compile + (require 'cl)) +(require 'url-util) +(require 'url-parse) + +(defun url-probe-protocols () + "Returns a list of all potential URL schemes." + (or (get 'url-extension-protocols 'probed) + (mapc (lambda (s) (url-scheme-get-property s 'name)) + (or (get 'url-extension-protocols 'schemes) + (let ((schemes '("info" "man" "rlogin" "telnet" + "tn3270" "data" "snews"))) + (mapc (lambda (d) + (mapc (lambda (f) + (if (string-match "url-\\(.*\\).el$" f) + (push (match-string 1 f) schemes))) + (directory-files d nil "^url-.*\\.el$"))) + load-path) + (put 'url-extension-protocols 'schemes schemes) + schemes))))) + +(defun url-about-protocols (url) + (url-probe-protocols) + (insert "<html>\n" + " <head>\n" + " <title>Supported Protocols</title>\n" + " </head>\n" + " <body>\n" + " <h1>Supported Protocols - URL v" url-version "</h1>\n" + " <table width='100%' border='1'>\n" + " <tr>\n" + " <td>Protocol\n" + " <td>Properties\n" + " <td>Description\n" + " </tr>\n") + (mapc (lambda (k) + (if (string= k "proxy") + ;; Ignore the proxy setting... its magic! + nil + (insert " <tr>\n") + ;; The name of the protocol + (insert " <td valign=top>" (or (url-scheme-get-property k 'name) k) "\n") + + ;; Now the properties. Currently just asynchronous + ;; status, default port number, and proxy status. + (insert " <td valign=top>" + (if (url-scheme-get-property k 'asynchronous-p) "As" "S") + "ynchronous<br>\n" + (if (url-scheme-get-property k 'default-port) + (format "Default Port: %d<br>\n" + (url-scheme-get-property k 'default-port)) "") + (if (assoc k url-proxy-services) + (format "Proxy: %s<br>\n" (assoc k url-proxy-services)) "")) + ;; Now the description... + (insert " <td valign=top>" + (or (url-scheme-get-property k 'description) "N/A")))) + (sort (let (x) (maphash (lambda (k v) (push k x)) url-scheme-registry) x) 'string-lessp)) + (insert " </table>\n" + " </body>\n" + "</html>\n")) + +(defun url-about (url) + "Show internal URLs." + (let* ((item (downcase (url-filename url))) + (func (intern (format "url-about-%s" item)))) + (if (fboundp func) + (progn + (set-buffer (generate-new-buffer " *about-data*")) + (insert "Content-type: text/html\n\n") + (funcall func url) + (current-buffer)) + (error "URL does not know about `%s'" item)))) + +(provide 'url-about) |