forked from hayamiz/twittering-mode
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url-about.el
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url-about.el
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;;; 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)