lisp/mail/rfc2045.el

   1 ;;; rfc2045.el --- Functions for decoding rfc2045 headers
   2
   3 ;; Copyright (C) 1998-2016 Free Software Foundation, Inc.
   4
   5 ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
   6 ;; This file is part of GNU Emacs.
   7
   8 ;; GNU Emacs is free software: you can redistribute it and/or modify
   9 ;; it under the terms of the GNU General Public License as published by
  10 ;; the Free Software Foundation, either version 3 of the License, or
  11 ;; (at your option) any later version.
  12
  13 ;; GNU Emacs is distributed in the hope that it will be useful,
  14 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 ;; GNU General Public License for more details.
  17
  18 ;; You should have received a copy of the GNU General Public License
  19 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  20
  21 ;; RFC 2045 is: "Multipurpose Internet Mail Extensions (MIME) Part
  22 ;; One:  Format of Internet Message Bodies".
  23
  24 ;;; Commentary:
  25
  26 ;;; Code:
  27
  28 (require 'ietf-drums)
  29
  30 (defun rfc2045-encode-string (param value)
  31   "Return and PARAM=VALUE string encoded according to RFC2045."
  32   (if (or (string-match (concat "[" ietf-drums-no-ws-ctl-token "]") value)
  33           (string-match (concat "[" ietf-drums-tspecials "]") value)
  34           (string-match "[ \n\t]" value)
  35           (not (string-match (concat "[" ietf-drums-text-token "]") value)))
  36       (concat param "=" (format "%S" value))
  37     (concat param "=" value)))
  38
  39 (provide 'rfc2045)
  40
  41 ;;; rfc2045.el ends here