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   1 ;;; mmgnus.el --- MIME entity implementation for gnus-article
   2
   3 ;; Copyright (C) 1998 Free Software Foundation, Inc.
   4
   5 ;; Author: MORIOKA Tomohiko <tomo@m17n.org>
   6 ;;         Keiichi Suzuki <keiichi@nanp.org>
   7 ;; Keywords: MIME, multimedia, mail, news
   8
   9 ;; This file is part of Nana-gnus.
  10
  11 ;; This program is free software; you can redistribute it and/or
  12 ;; modify it under the terms of the GNU General Public License as
  13 ;; published by the Free Software Foundation; either version 2, or (at
  14 ;; your option) any later version.
  15
  16 ;; This program is distributed in the hope that it will be useful, but
  17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  19 ;; General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  24 ;; Boston, MA 02111-1307, USA.
  25
  26 ;;; Code:
  27
  28 (require 'mime)
  29 (require 'eword-decode)
  30
  31 (luna-define-class mmgnus-entity (mime-entity)
  32                    (body
  33                     header undisplayer content-description cache content-id))
  34
  35 (luna-define-internal-accessors 'mmgnus-entity)
  36
  37 (luna-define-method initialize-instance ((entity mmgnus-entity)
  38                                          &rest init-args)
  39   (apply (car (luna-class-find-functions
  40                (luna-find-class 'standard-object)
  41                'initialize-instance))
  42          entity init-args))
  43
  44 (defun mmgnus-visible-field-p (field-name visible-fields invisible-fields)
  45   (or (catch 'found
  46         (while visible-fields
  47           (let ((regexp (car visible-fields)))
  48             (if (string-match regexp field-name)
  49                 (throw 'found t)
  50               ))
  51           (setq visible-fields (cdr visible-fields))
  52           ))
  53       (catch 'found
  54         (while invisible-fields
  55           (let ((regexp (car invisible-fields)))
  56             (if (string-match regexp field-name)
  57                 (throw 'found nil)
  58               ))
  59           (setq invisible-fields (cdr invisible-fields))
  60           )
  61         t)))
  62
  63 (defun mmgnus-insert-header-from-string (string
  64                                          &optional invisible-fields
  65                                          visible-fields)
  66   (let ((the-buf (current-buffer))
  67         (mode-obj (mime-find-field-presentation-method 'wide))
  68         field-decoder
  69         f-b p f-e field-name len field field-body buffer)
  70     (with-temp-buffer
  71       (setq buffer (current-buffer))
  72       (insert string)
  73       (goto-char (point-min))
  74       (while (re-search-forward std11-field-head-regexp nil t)
  75         (setq f-b (match-beginning 0)
  76               p (match-end 0)
  77               field-name (buffer-substring f-b p)
  78               len (string-width field-name)
  79               f-e (std11-field-end))
  80         (when (mmgnus-visible-field-p field-name
  81                                       visible-fields invisible-fields)
  82           (setq field (intern
  83                        (capitalize (buffer-substring f-b (1- p))))
  84                 field-body (buffer-substring p f-e)
  85                 field-decoder (inline (mime-find-field-decoder-internal
  86                                        field mode-obj)))
  87           (with-current-buffer the-buf
  88             (insert field-name)
  89             (insert (if field-decoder
  90                         (funcall field-decoder field-body len)
  91                       ;; Don't decode
  92                       field-body))
  93             (insert "\n")
  94             ))))))
  95
  96 (luna-define-method mime-insert-header ((entity mmgnus-entity)
  97                                         &optional invisible-fields
  98                                         visible-fields)
  99   (mmgnus-insert-header-from-string
 100    (mmgnus-entity-header-internal entity)
 101    invisible-fields visible-fields))
 102
 103 (luna-define-method mime-entity-content ((entity mmgnus-entity))
 104   (save-excursion
 105     (cond
 106      ((bufferp (mmgnus-entity-body-internal entity))
 107       (set-buffer (mmgnus-entity-body-internal entity))
 108       (mime-decode-string (buffer-string) (mime-entity-encoding entity)))
 109      (t
 110       (error "Invalid body object. %s"
 111              (mmgnus-entity-body-internal entity))))))
 112
 113 (luna-define-class mime-gnus-entity (mmgnus-entity)
 114                    (number
 115                     subject from date id references chars lines xref extra))
 116
 117 (luna-define-internal-accessors 'mime-gnus-entity)
 118
 119 (luna-define-method initialize-instance ((entity mime-gnus-entity)
 120                                          &rest init-args)
 121   (apply (car (luna-class-find-functions
 122                (luna-find-class 'standard-object)
 123                'initialize-instance))
 124          entity init-args))
 125
 126 (luna-define-method mime-insert-header :around ((entity mime-gnus-entity)
 127                                                 &optional invisible-fields
 128                                                 visible-fields)
 129   (luna-call-next-method))
 130
 131 (luna-define-method mime-entity-content :around ((entity mime-gnus-entity))
 132   (luna-call-next-method))
 133
 134 ;;; @ end
 135 ;;;
 136
 137 (provide 'mmgnus)
 138
 139 ;;; mmgnus.el ends here