1 ;;; mmbuffer.el --- MIME entity module for binary buffer
3 ;; Copyright (C) 1998,1999,2000 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <tomo@m17n.org>
6 ;; Keywords: MIME, multimedia, mail, news
8 ;; This file is part of FLIM (Faithful Library about Internet Message).
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.
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.
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.
31 (luna-define-class mime-buffer-entity (mime-entity)
38 (luna-define-internal-accessors 'mime-buffer-entity)
41 (luna-define-method initialize-instance :after ((entity mime-buffer-entity)
43 (or (mime-buffer-entity-buffer-internal entity)
44 (mime-buffer-entity-set-buffer-internal
45 entity (get-buffer (mime-entity-location-internal entity))))
47 (set-buffer (mime-buffer-entity-buffer-internal entity))
49 (or (mime-buffer-entity-header-start-internal entity)
50 (mime-buffer-entity-set-header-start-internal
52 (header-end (mime-buffer-entity-header-end-internal entity))
53 (body-start (mime-buffer-entity-body-start-internal entity))
55 (or (mime-buffer-entity-body-end-internal entity)
56 (mime-buffer-entity-set-body-end-internal entity (point-max)))))
57 (goto-char header-start)
58 (unless (and header-end body-start)
59 (if (re-search-forward "^$" body-end t)
60 (setq header-end (match-end 0)
61 body-start (if (= header-end body-end)
64 (setq header-end (point-min)
65 body-start (point-min)))
66 (mime-buffer-entity-set-header-end-internal entity header-end)
67 (mime-buffer-entity-set-body-start-internal entity body-start)
69 (or (mime-entity-content-type-internal entity)
71 (narrow-to-region header-start header-end)
72 (mime-entity-set-content-type-internal
74 (let ((str (std11-fetch-field "Content-Type")))
76 (mime-parse-Content-Type str)
82 (luna-define-method mime-entity-name ((entity mime-buffer-entity))
83 (buffer-name (mime-buffer-entity-buffer-internal entity))
90 (luna-define-method mime-insert-entity ((entity mime-buffer-entity))
91 (insert-buffer-substring (mime-buffer-entity-buffer-internal entity)
92 (mime-buffer-entity-header-start-internal entity)
93 (mime-buffer-entity-body-end-internal entity))
96 (luna-define-method mime-write-entity ((entity mime-buffer-entity) filename)
98 (set-buffer (mime-buffer-entity-buffer-internal entity))
99 (let ((coding-system-for-write 'raw-text-dos))
100 (write-region (mime-buffer-entity-header-start-internal entity)
101 (mime-buffer-entity-body-end-internal entity)
112 (luna-define-method mime-entity-body ((entity mime-buffer-entity))
114 (set-buffer (mime-buffer-entity-buffer-internal entity))
115 (buffer-substring (mime-buffer-entity-body-start-internal entity)
116 (mime-buffer-entity-body-end-internal entity))))
118 (luna-define-method mime-insert-entity-body ((entity mime-buffer-entity))
119 (insert-buffer-substring (mime-buffer-entity-buffer-internal entity)
120 (mime-buffer-entity-body-start-internal entity)
121 (mime-buffer-entity-body-end-internal entity))
124 (luna-define-method mime-write-entity-body ((entity mime-buffer-entity)
127 (set-buffer (mime-buffer-entity-buffer-internal entity))
128 (write-region-as-binary (mime-buffer-entity-body-start-internal entity)
129 (mime-buffer-entity-body-end-internal entity)
137 (luna-define-method mime-entity-content ((entity mime-buffer-entity))
139 (set-buffer (mime-buffer-entity-buffer-internal entity))
141 (buffer-substring (mime-buffer-entity-body-start-internal entity)
142 (mime-buffer-entity-body-end-internal entity))
143 (mime-entity-encoding entity))))
145 (luna-define-method mime-insert-entity-content ((entity mime-buffer-entity))
146 (insert (with-current-buffer (mime-buffer-entity-buffer-internal entity)
148 (buffer-substring (mime-buffer-entity-body-start-internal entity)
149 (mime-buffer-entity-body-end-internal entity))
150 (mime-entity-encoding entity)))))
152 (luna-define-method mime-write-entity-content ((entity mime-buffer-entity)
155 (set-buffer (mime-buffer-entity-buffer-internal entity))
156 (mime-write-decoded-region (mime-buffer-entity-body-start-internal entity)
157 (mime-buffer-entity-body-end-internal entity)
159 (or (mime-entity-encoding entity) "7bit"))
166 (luna-define-method mime-entity-fetch-field :around
167 ((entity mime-buffer-entity) field-name)
168 (or (luna-call-next-method)
170 (set-buffer (mime-buffer-entity-buffer-internal entity))
172 (narrow-to-region (mime-buffer-entity-header-start-internal entity)
173 (mime-buffer-entity-header-end-internal entity))
174 (let ((ret (std11-fetch-field field-name)))
176 (or (symbolp field-name)
178 (intern (capitalize (capitalize field-name)))))
179 (mime-entity-set-original-header-internal
181 (put-alist field-name ret
182 (mime-entity-original-header-internal entity)))
185 (luna-define-method mime-insert-header ((entity mime-buffer-entity)
186 &optional invisible-fields
188 (mime-insert-header-from-buffer
189 (mime-buffer-entity-buffer-internal entity)
190 (mime-buffer-entity-header-start-internal entity)
191 (mime-buffer-entity-header-end-internal entity)
192 invisible-fields visible-fields)
199 ;; (luna-define-method mime-entity-header-buffer ((entity mime-buffer-entity))
200 ;; (mime-buffer-entity-buffer-internal entity)
203 ;; (luna-define-method mime-goto-header-start-point ((entity mime-buffer-entity))
204 ;; (set-buffer (mime-buffer-entity-buffer-internal entity))
205 ;; (goto-char (mime-buffer-entity-header-start-internal entity))
208 ;; (luna-define-method mime-entity-header-start-point ((entity
209 ;; mime-buffer-entity))
210 ;; (mime-buffer-entity-header-start-internal entity)
213 ;; (luna-define-method mime-entity-header-end-point ((entity
214 ;; mime-buffer-entity))
215 ;; (mime-buffer-entity-header-end-internal entity)
222 ;; (luna-define-method mime-entity-body-buffer ((entity mime-buffer-entity))
223 ;; (mime-buffer-entity-buffer-internal entity)
226 ;; (luna-define-method mime-goto-body-start-point ((entity mime-buffer-entity))
227 ;; (set-buffer (mime-buffer-entity-buffer-internal entity))
228 ;; (goto-char (mime-buffer-entity-body-start-internal entity))
231 ;; (luna-define-method mime-goto-body-end-point ((entity mime-buffer-entity))
232 ;; (set-buffer (mime-buffer-entity-buffer-internal entity))
233 ;; (goto-char (mime-buffer-entity-body-end-internal entity))
236 ;; (luna-define-method mime-entity-body-start-point ((entity mime-buffer-entity))
237 ;; (mime-buffer-entity-body-start-internal entity)
240 ;; (luna-define-method mime-entity-body-end-point ((entity mime-buffer-entity))
241 ;; (mime-buffer-entity-body-end-internal entity)
245 ;;; @ buffer (obsolete)
248 ;; (luna-define-method mime-entity-buffer ((entity mime-buffer-entity))
249 ;; (mime-buffer-entity-buffer-internal entity)
252 ;; (luna-define-method mime-entity-point-min ((entity mime-buffer-entity))
253 ;; (mime-buffer-entity-header-start-internal entity)
256 ;; (luna-define-method mime-entity-point-max ((entity mime-buffer-entity))
257 ;; (mime-buffer-entity-body-end-internal entity)
264 (defun mmbuffer-parse-multipart (entity &optional representation-type)
265 (with-current-buffer (mime-buffer-entity-buffer-internal entity)
266 (or representation-type
267 (setq representation-type
268 (mime-entity-representation-type-internal entity)))
269 (let* ((content-type (mime-entity-content-type-internal entity))
272 (mime-content-type-parameter content-type "boundary")))
273 (delimiter (concat "\n" (regexp-quote dash-boundary)))
274 (close-delimiter (concat delimiter "--[ \t]*$"))
275 (rsep (concat delimiter "[ \t]*\n"))
277 (if (eq (mime-content-type-subtype content-type) 'digest)
278 (make-mime-content-type 'message 'rfc822)
279 (make-mime-content-type 'text 'plain)
281 (body-start (mime-buffer-entity-body-start-internal entity))
282 (body-end (mime-buffer-entity-body-end-internal entity)))
285 (narrow-to-region body-start
286 (if (re-search-backward close-delimiter nil t)
289 (goto-char body-start)
290 (if (re-search-forward
291 (concat "^" (regexp-quote dash-boundary) "[ \t]*\n")
293 (let ((cb (match-end 0))
295 (node-id (mime-entity-node-id-internal entity))
297 (while (re-search-forward rsep nil t)
298 (setq ce (match-beginning 0))
299 (setq ncb (match-end 0))
301 (narrow-to-region cb ce)
302 (setq ret (mime-parse-message representation-type dc-ctl
303 entity (cons i node-id)))
305 (setq children (cons ret children))
306 (goto-char (setq cb ncb))
309 (setq ce (point-max))
311 (narrow-to-region cb ce)
312 (setq ret (mime-parse-message representation-type dc-ctl
313 entity (cons i node-id)))
315 (setq children (cons ret children))
316 (mime-entity-set-children-internal entity (nreverse children))
318 (mime-entity-set-content-type-internal
319 entity (make-mime-content-type 'message 'x-broken))
323 (defun mmbuffer-parse-encapsulated (entity &optional external
325 (mime-entity-set-children-internal
327 (with-current-buffer (mime-buffer-entity-buffer-internal entity)
329 (narrow-to-region (mime-buffer-entity-body-start-internal entity)
330 (mime-buffer-entity-body-end-internal entity))
331 (list (mime-parse-message
334 (require 'mmexternal)
335 'mime-external-entity)
336 (or representation-type
337 (mime-entity-representation-type-internal entity)))
339 entity (cons 0 (mime-entity-node-id-internal entity))))))))
341 (luna-define-method mime-entity-children ((entity mime-buffer-entity))
342 (let* ((content-type (mime-entity-content-type entity))
343 (primary-type (mime-content-type-primary-type content-type))
345 (cond ((eq primary-type 'multipart)
346 (mmbuffer-parse-multipart entity))
347 ((eq primary-type 'message)
348 (setq sub-type (mime-content-type-subtype content-type))
349 (cond ((eq sub-type 'external-body)
350 (mmbuffer-parse-encapsulated entity 'external))
351 ((memq sub-type '(rfc822 news))
352 (mmbuffer-parse-encapsulated entity)))))))
360 ;;; mmbuffer.el ends here