[bpt/emacs.git] / lisp / url / url-about.el

;;; url-about.el --- Show internal URLs

;; Copyright (c) 2001, 2004  Free Software Foundation, Inc.

;; Keywords: comm, data, processes, hypermedia

;; 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., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.

;;; Commentary:

;;; Code:

(eval-when-compile
  (require 'cl))
(require 'url-util)
(require 'url-parse)

(defun url-probe-protocols ()
  "Return 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)))))

(defvar url-scheme-registry)

(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/plain\n\n")
	  (funcall func url)
	  (current-buffer))
      (error "URL does not know about `%s'" item))))

(provide 'url-about)

;; arch-tag: 65dd7fca-db3f-4cb1-8026-7dd37d4a460e
;;; url-about.el ends here
Commit	Line	Data
8c8b8430	1	;;; url-about.el --- Show internal URLs
d3c91027 SM	2
	3	;; Copyright (c) 2001, 2004 Free Software Foundation, Inc.
	4
8c8b8430 SM	5	;; Keywords: comm, data, processes, hypermedia
8c8b8430 SM	6
d3c91027 SM	7	;; This file is part of GNU Emacs.
	8	;;
	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 2, or (at your option)
	12	;; any later version.
	13	;;
	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.
	18	;;
	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
4fc5845f LK	21	;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
4fc5845f LK	22	;; Boston, MA 02110-1301, USA.
d3c91027 SM	23
	24	;;; Commentary:
	25
	26	;;; Code:
	27
8c8b8430 SM	28	(eval-when-compile
	29	(require 'cl))
	30	(require 'url-util)
	31	(require 'url-parse)
	32
	33	(defun url-probe-protocols ()
d3c91027	34	"Return a list of all potential URL schemes."
8c8b8430 SM	35	(or (get 'url-extension-protocols 'probed)
	36	(mapc (lambda (s) (url-scheme-get-property s 'name))
	37	(or (get 'url-extension-protocols 'schemes)
	38	(let ((schemes '("info" "man" "rlogin" "telnet"
	39	"tn3270" "data" "snews")))
	40	(mapc (lambda (d)
	41	(mapc (lambda (f)
	42	(if (string-match "url-\\(.*\\).el$" f)
	43	(push (match-string 1 f) schemes)))
	44	(directory-files d nil "^url-.*\\.el$")))
	45	load-path)
	46	(put 'url-extension-protocols 'schemes schemes)
	47	schemes)))))
	48
d3c91027 SM	49	(defvar url-scheme-registry)
d3c91027 SM	50
8c8b8430 SM	51	(defun url-about-protocols (url)
	52	(url-probe-protocols)
	53	(insert "<html>\n"
	54	" <head>\n"
	55	" <title>Supported Protocols</title>\n"
	56	" </head>\n"
	57	" <body>\n"
	58	" <h1>Supported Protocols - URL v" url-version "</h1>\n"
	59	" <table width='100%' border='1'>\n"
	60	" <tr>\n"
	61	" <td>Protocol\n"
	62	" <td>Properties\n"
	63	" <td>Description\n"
	64	" </tr>\n")
	65	(mapc (lambda (k)
	66	(if (string= k "proxy")
	67	;; Ignore the proxy setting... its magic!
	68	nil
	69	(insert " <tr>\n")
	70	;; The name of the protocol
	71	(insert " <td valign=top>" (or (url-scheme-get-property k 'name) k) "\n")
	72
	73	;; Now the properties. Currently just asynchronous
	74	;; status, default port number, and proxy status.
	75	(insert " <td valign=top>"
	76	(if (url-scheme-get-property k 'asynchronous-p) "As" "S")
	77	"ynchronous<br>\n"
	78	(if (url-scheme-get-property k 'default-port)
	79	(format "Default Port: %d<br>\n"
	80	(url-scheme-get-property k 'default-port)) "")
	81	(if (assoc k url-proxy-services)
	82	(format "Proxy: %s<br>\n" (assoc k url-proxy-services)) ""))
	83	;; Now the description...
	84	(insert " <td valign=top>"
	85	(or (url-scheme-get-property k 'description) "N/A"))))
	86	(sort (let (x) (maphash (lambda (k v) (push k x)) url-scheme-registry) x) 'string-lessp))
	87	(insert " </table>\n"
	88	" </body>\n"
	89	"</html>\n"))
	90
	91	(defun url-about (url)
	92	"Show internal URLs."
	93	(let* ((item (downcase (url-filename url)))
	94	(func (intern (format "url-about-%s" item))))
	95	(if (fboundp func)
	96	(progn
	97	(set-buffer (generate-new-buffer " about-data"))
d3c91027	98	(insert "Content-type: text/plain\n\n")
8c8b8430 SM	99	(funcall func url)
	100	(current-buffer))
	101	(error "URL does not know about `%s'" item))))
	102
	103	(provide 'url-about)
e5566bd5	104
d3c91027 SM	105	;; arch-tag: 65dd7fca-db3f-4cb1-8026-7dd37d4a460e
d3c91027 SM	106	;;; url-about.el ends here