mime-lib.el

   1 ;;; mime-lib.el --- MIME library module
   2
   3 ;; Copyright (C) 1998 Free Software Foundation, Inc.
   4
   5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
   6 ;; Keywords: MIME, multimedia, mail, news
   7
   8 ;; This file is part of FLIM (Faithful Library about Internet Message).
   9
  10 ;; This program is free software; you can redistribute it and/or
  11 ;; modify it under the terms of the GNU General Public License as
  12 ;; published by the Free Software Foundation; either version 2, or (at
  13 ;; your option) any later version.
  14
  15 ;; This program is distributed in the hope that it will be useful, but
  16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 ;; 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., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Code:
  26
  27 (require 'alist)
  28 (require 'std11)
  29 (require 'mime-def)
  30 (require 'eword-decode)
  31
  32 (defun mime-entity-fetch-field (entity field-name)
  33   (or (symbolp field-name)
  34       (setq field-name (intern (capitalize (capitalize field-name)))))
  35   (let* ((header (mime-entity-original-header entity))
  36          (field-body (cdr (assq field-name header))))
  37     (or field-body
  38         (progn
  39           (if (save-excursion
  40                 (set-buffer (mime-entity-buffer entity))
  41                 (save-restriction
  42                   (narrow-to-region (mime-entity-header-start entity)
  43                                     (mime-entity-header-end entity))
  44                   (setq field-body
  45                         (std11-fetch-field (symbol-name field-name)))
  46                   ))
  47               (mime-entity-set-original-header
  48                entity (put-alist field-name field-body header))
  49             )
  50           field-body))))
  51
  52 (defun mime-entity-read-field (entity field-name)
  53   (or (symbolp field-name)
  54       (setq field-name (capitalize (capitalize field-name))))
  55   (cond ((eq field-name 'Content-Type)
  56          (mime-entity-content-type entity)
  57          )
  58         ((eq field-name 'Content-Disposition)
  59          (mime-entity-content-disposition entity)
  60          )
  61         ((eq field-name 'Content-Transfer-Encoding)
  62          (mime-entity-encoding entity)
  63          )
  64         (t
  65          (let* ((header (mime-entity-parsed-header entity))
  66                 (field (cdr (assq field-name header))))
  67            (or field
  68                (let ((field-body (mime-entity-fetch-field entity field-name)))
  69                  (when field-body
  70                    (cond ((memq field-name '(From Resent-From
  71                                              To Resent-To
  72                                              Cc Resent-Cc
  73                                              Bcc Resent-Bcc
  74                                              Reply-To Resent-Reply-To))
  75                           (setq field (std11-parse-addresses
  76                                        (eword-lexical-analyze field-body)))
  77                           )
  78                          ((eq field-name '(Sender Resent-Sender))
  79                           (setq field (std11-parse-address
  80                                        (eword-lexical-analyze field-body)))
  81                           )
  82                          ((memq field-name eword-decode-ignored-field-list)
  83                           (setq field field-body))
  84                          ((memq field-name eword-decode-structured-field-list)
  85                           (setq field (eword-decode-structured-field-body
  86                                        field-body)))
  87                          (t
  88                           (setq field (eword-decode-unstructured-field-body
  89                                        field-body))
  90                           ))
  91                    (mime-entity-set-parsed-header
  92                     entity (put-alist field-name field header))
  93                    field)))))))
  94
  95
  96 ;;; @ end
  97 ;;;
  98
  99 (provide 'mime-lib)
 100
 101 ;;; mime-lib.el ends here