lisp/url/url-misc.el

   1 ;;; url-misc.el --- Misc Uniform Resource Locator retrieval code
   2
   3 ;; Copyright (C) 1996, 1997, 1998, 1999, 2002, 2004,
   4 ;;   2005, 2006, 2007 Free Software Foundation, Inc.
   5
   6 ;; Keywords: comm, data, processes
   7
   8 ;; This file is part of GNU Emacs.
   9
  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 2, or (at your option)
  13 ;; any later version.
  14
  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.
  19
  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.
  24
  25 ;;; Code:
  26
  27 (eval-when-compile (require 'cl))
  28 (require 'url-vars)
  29 (require 'url-parse)
  30 (autoload 'Info-goto-node "info" "" t)
  31 (autoload 'man "man" nil t)
  32
  33 ;;;###autoload
  34 (defun url-man (url)
  35   "Fetch a Unix manual page URL."
  36   (man (url-filename url))
  37   nil)
  38
  39 ;;;###autoload
  40 (defun url-info (url)
  41   "Fetch a GNU Info URL."
  42   ;; Fetch an info node
  43   (let* ((fname (url-filename url))
  44          (node (url-unhex-string (or (url-target url) "Top"))))
  45     (if (and fname node)
  46         (Info-goto-node (concat "(" fname ")" node))
  47       (error "Malformed url: %s" (url-recreate-url url)))
  48     nil))
  49
  50 (defun url-do-terminal-emulator (type server port user)
  51   (terminal-emulator
  52    (generate-new-buffer (format "%s%s" (if user (concat user "@") "") server))
  53    (case type
  54      (rlogin "rlogin")
  55      (telnet "telnet")
  56      (tn3270 "tn3270")
  57      (otherwise
  58       (error "Unknown terminal emulator required: %s" type)))
  59    (case type
  60      (rlogin
  61       (if user
  62           (list server "-l" user)
  63         (list server)))
  64      (telnet
  65       (if user (message "Please log in as user: %s" user))
  66       (if port
  67           (list server port)
  68         (list server)))
  69      (tn3270
  70       (if user (message "Please log in as user: %s" user))
  71       (list server)))))
  72
  73 ;;;###autoload
  74 (defun url-generic-emulator-loader (url)
  75   (let* ((type (intern (downcase (url-type url))))
  76          (server (url-host url))
  77          (name (url-user url))
  78          (port (url-port url)))
  79     (url-do-terminal-emulator type server port name))
  80   nil)
  81
  82 ;;;###autoload
  83 (defalias 'url-rlogin 'url-generic-emulator-loader)
  84 ;;;###autoload
  85 (defalias 'url-telnet 'url-generic-emulator-loader)
  86 ;;;###autoload
  87 (defalias 'url-tn3270 'url-generic-emulator-loader)
  88
  89 ;; RFC 2397
  90 ;;;###autoload
  91 (defun url-data (url)
  92   "Fetch a data URL (RFC 2397)."
  93   (let ((mediatype nil)
  94         ;; The mediatype may need to be hex-encoded too -- see the RFC.
  95         (desc (url-unhex-string (url-filename url)))
  96         (encoding "8bit")
  97         (data nil))
  98     (save-excursion
  99       (if (not (string-match "\\([^,]*\\)?," desc))
 100           (error "Malformed data URL: %s" desc)
 101         (setq mediatype (match-string 1 desc))
 102         (if (and mediatype (string-match ";base64\\'" mediatype))
 103             (setq mediatype (substring mediatype 0 (match-beginning 0))
 104                   encoding "base64"))
 105         (if (or (null mediatype)
 106                 (eq ?\; (aref mediatype 0)))
 107           (setq mediatype (concat "text/plain" mediatype)))
 108         (setq data (url-unhex-string (substring desc (match-end 0)))))
 109       (set-buffer (generate-new-buffer " *url-data*"))
 110       (mm-disable-multibyte)
 111       (insert (format "Content-Length: %d\n" (length data))
 112               "Content-Type: " mediatype "\n"
 113               "Content-Encoding: " encoding "\n"
 114               "\n")
 115       (if data (insert data))
 116       (current-buffer))))
 117
 118 (provide 'url-misc)
 119
 120 ;;; arch-tag: 8c544e1b-d8bc-40a6-b319-f1f37fef65a0
 121 ;;; url-misc.el ends here