lisp/url/url-cid.el

   1 ;;; url-cid.el --- Content-ID URL loader
   2
   3 ;; Copyright (C) 1998, 1999, 2004, 2005, 2006, 2007, 2008, 2009
   4 ;;   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 3 of the License, or
  13 ;; (at your option) 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.  If not, see <http://www.gnu.org/licenses/>.
  22
  23 ;;; Code:
  24
  25 (require 'url-vars)
  26 (require 'url-parse)
  27
  28 (require 'mm-decode)
  29
  30 (defun url-cid-gnus (cid)
  31   (let ((content-type nil)
  32         (encoding nil)
  33         (part nil)
  34         (data nil))
  35     (setq part (mm-get-content-id cid))
  36     (if (not part)
  37         (message "Unknown CID encountered: %s" cid)
  38       (setq data (save-excursion
  39                    (set-buffer (mm-handle-buffer part))
  40                    (buffer-string))
  41             content-type (mm-handle-type part)
  42             encoding (symbol-name (mm-handle-encoding part)))
  43       (if (= 0 (length content-type)) (setq content-type "text/plain"))
  44       (if (= 0 (length encoding)) (setq encoding "8bit"))
  45       (if (listp content-type)
  46           (setq content-type (car content-type)))
  47       (insert (format "Content-length: %d\r\n"  (length data))
  48               "Content-type: " content-type "\r\n"
  49               "Content-transfer-encoding: " encoding "\r\n"
  50               "\r\n"
  51               (or data "")))))
  52
  53 ;;;###autoload
  54 (defun url-cid (url)
  55   (cond
  56    ((fboundp 'mm-get-content-id)
  57     ;; Using Pterodactyl Gnus or later
  58     (save-excursion
  59       (set-buffer (generate-new-buffer " *url-cid*"))
  60       (url-cid-gnus (url-filename url))))
  61    (t
  62     (message "Unable to handle CID URL: %s" url))))
  63
  64 ;; arch-tag: 23d9ab74-fad4-4dba-b1e7-292871e8bda5
  65 ;;; url-cid.el ends here