mmbuffer.el

   1 ;;; mmbuffer.el --- MIME entity module for binary buffer
   2
   3 ;; Copyright (C) 1998,1999,2000 Free Software Foundation, Inc.
   4
   5 ;; Author: MORIOKA Tomohiko <tomo@m17n.org>
   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 'mmgeneric)
  28 (require 'mime)
  29
  30 (eval-and-compile
  31   (luna-define-class mime-buffer-entity (mime-entity)
  32                      (buffer
  33                       header-start
  34                       header-end
  35                       body-start
  36                       body-end))
  37
  38   (luna-define-internal-accessors 'mime-buffer-entity)
  39   )
  40
  41 (luna-define-method initialize-instance :after ((entity mime-buffer-entity)
  42                                                 &rest init-args)
  43   (or (mime-buffer-entity-buffer-internal entity)
  44       (mime-buffer-entity-set-buffer-internal
  45        entity (mime-entity-location-internal entity)))
  46   (save-excursion
  47     (set-buffer (mime-buffer-entity-buffer-internal entity))
  48     (if (mime-root-entity-p entity)
  49         (setq mime-message-structure entity))
  50     (let ((header-start
  51            (or (mime-buffer-entity-header-start-internal entity)
  52                (mime-buffer-entity-set-header-start-internal
  53                 entity (point-min))))
  54           (header-end (mime-buffer-entity-header-end-internal entity))
  55           (body-start (mime-buffer-entity-body-start-internal entity))
  56           (body-end
  57            (or (mime-buffer-entity-body-end-internal entity)
  58                (mime-buffer-entity-set-body-end-internal entity (point-max)))))
  59       (goto-char header-start)
  60       (unless (and header-end body-start)
  61         (if (re-search-forward "^$" body-end t)
  62             (setq header-end (match-end 0)
  63                   body-start (if (= header-end body-end)
  64                                  body-end
  65                                (1+ header-end)))
  66           (setq header-end (point-min)
  67                 body-start (point-min)))
  68         (mime-buffer-entity-set-header-end-internal entity header-end)
  69         (mime-buffer-entity-set-body-start-internal entity body-start)
  70         )
  71       (or (mime-entity-content-type-internal entity)
  72           (save-restriction
  73             (narrow-to-region header-start header-end)
  74             (mime-entity-set-content-type-internal
  75              entity
  76              (let ((str (std11-fetch-field "Content-Type")))
  77                (if str
  78                    (mime-parse-Content-Type str)
  79                  )))
  80             ))
  81       ))
  82   entity)
  83
  84 (luna-define-method mime-entity-name ((entity mime-buffer-entity))
  85   (buffer-name (mime-buffer-entity-buffer-internal entity))
  86   )
  87
  88
  89 (luna-define-method mime-insert-header ((entity mime-buffer-entity)
  90                                         &optional invisible-fields
  91                                         visible-fields)
  92   (mime-insert-header-from-buffer
  93    (mime-buffer-entity-buffer-internal entity)
  94    (mime-buffer-entity-header-start-internal entity)
  95    (mime-buffer-entity-header-end-internal entity)
  96    invisible-fields visible-fields)
  97   )
  98
  99 (luna-define-method mime-entity-content ((entity mime-buffer-entity))
 100   (save-excursion
 101     (set-buffer (mime-buffer-entity-buffer-internal entity))
 102     (mime-decode-string
 103      (buffer-substring (mime-buffer-entity-body-start-internal entity)
 104                        (mime-buffer-entity-body-end-internal entity))
 105      (mime-entity-encoding entity))))
 106
 107 (luna-define-method mime-entity-fetch-field :around
 108   ((entity mime-buffer-entity) field-name)
 109   (or (luna-call-next-method)
 110       (save-excursion
 111         (set-buffer (mime-buffer-entity-buffer-internal entity))
 112         (save-restriction
 113           (narrow-to-region (mime-buffer-entity-header-start-internal entity)
 114                             (mime-buffer-entity-header-end-internal entity))
 115           (let ((ret (std11-fetch-field field-name)))
 116             (when ret
 117               (or (symbolp field-name)
 118                   (setq field-name
 119                         (intern (capitalize (capitalize field-name)))))
 120               (mime-entity-set-original-header-internal
 121                entity
 122                (put-alist field-name ret
 123                           (mime-entity-original-header-internal entity)))
 124               ret))))))
 125
 126 (mm-define-method insert-entity-content ((entity buffer))
 127   (insert (with-current-buffer (mime-buffer-entity-buffer-internal entity)
 128             (mime-decode-string
 129              (buffer-substring (mime-buffer-entity-body-start-internal entity)
 130                                (mime-buffer-entity-body-end-internal entity))
 131              (mime-entity-encoding entity)))))
 132
 133 (mm-define-method write-entity-content ((entity buffer) filename)
 134   (save-excursion
 135     (set-buffer (mime-buffer-entity-buffer-internal entity))
 136     (mime-write-decoded-region (mime-buffer-entity-body-start-internal entity)
 137                                (mime-buffer-entity-body-end-internal entity)
 138                                filename
 139                                (or (mime-entity-encoding entity) "7bit"))
 140     ))
 141
 142 (mm-define-method insert-entity ((entity buffer))
 143   (insert-buffer-substring (mime-buffer-entity-buffer-internal entity)
 144                            (mime-buffer-entity-header-start-internal entity)
 145                            (mime-buffer-entity-body-end-internal entity))
 146   )
 147
 148 (mm-define-method write-entity ((entity buffer) filename)
 149   (save-excursion
 150     (set-buffer (mime-buffer-entity-buffer-internal entity))
 151     (write-region-as-raw-text-CRLF
 152      (mime-buffer-entity-header-start-internal entity)
 153      (mime-buffer-entity-body-end-internal entity)
 154      filename)
 155     ))
 156
 157 (mm-define-method write-entity-body ((entity buffer) filename)
 158   (save-excursion
 159     (set-buffer (mime-buffer-entity-buffer-internal entity))
 160     (write-region-as-binary (mime-buffer-entity-body-start-internal entity)
 161                             (mime-buffer-entity-body-end-internal entity)
 162                             filename)
 163     ))
 164
 165
 166 ;;; @ header buffer
 167 ;;;
 168
 169 (luna-define-method mime-entity-header-buffer ((entity mime-buffer-entity))
 170   (mime-buffer-entity-buffer-internal entity)
 171   )
 172
 173 (luna-define-method mime-goto-header-start-point ((entity mime-buffer-entity))
 174   (set-buffer (mime-buffer-entity-buffer-internal entity))
 175   (goto-char (mime-buffer-entity-header-start-internal entity))
 176   )
 177
 178 (luna-define-method mime-entity-header-start-point ((entity
 179                                                      mime-buffer-entity))
 180   (mime-buffer-entity-header-start-internal entity)
 181   )
 182
 183 (luna-define-method mime-entity-header-end-point ((entity
 184                                                    mime-buffer-entity))
 185   (mime-buffer-entity-header-end-internal entity)
 186   )
 187
 188
 189 ;;; @ body buffer
 190 ;;;
 191
 192 (luna-define-method mime-entity-body-buffer ((entity mime-buffer-entity))
 193   (mime-buffer-entity-buffer-internal entity)
 194   )
 195
 196 (luna-define-method mime-goto-body-start-point ((entity mime-buffer-entity))
 197   (set-buffer (mime-buffer-entity-buffer-internal entity))
 198   (goto-char (mime-buffer-entity-body-start-internal entity))
 199   )
 200
 201 (luna-define-method mime-goto-body-end-point ((entity mime-buffer-entity))
 202   (set-buffer (mime-buffer-entity-buffer-internal entity))
 203   (goto-char (mime-buffer-entity-body-end-internal entity))
 204   )
 205
 206 (luna-define-method mime-entity-body-start-point ((entity mime-buffer-entity))
 207   (mime-buffer-entity-body-start-internal entity)
 208   )
 209
 210 (luna-define-method mime-entity-body-end-point ((entity mime-buffer-entity))
 211   (mime-buffer-entity-body-end-internal entity)
 212   )
 213
 214
 215 ;;; @ buffer (obsolete)
 216 ;;;
 217
 218 (luna-define-method mime-entity-buffer ((entity mime-buffer-entity))
 219   (mime-buffer-entity-buffer-internal entity)
 220   )
 221
 222 (luna-define-method mime-entity-point-min ((entity mime-buffer-entity))
 223   (mime-buffer-entity-header-start-internal entity)
 224   )
 225
 226 (luna-define-method mime-entity-point-max ((entity mime-buffer-entity))
 227   (mime-buffer-entity-body-end-internal entity)
 228   )
 229
 230
 231 ;;; @ end
 232 ;;;
 233
 234 (provide 'mmbuffer)
 235
 236 ;;; mmbuffer.el ends here