1 ;;; mmbuffer.el --- MIME entity module for binary buffer
3 ;; Copyright (C) 1998,1999 Free Software Foundation, Inc.
4 ;; Copyright (C) 1999 Electrotechnical Laboratory, JAPAN.
5 ;; Licensed to the Free Software Foundation.
7 ;; Author: MORIOKA Tomohiko <tomo@m17n.org>
8 ;; Keywords: MIME, multimedia, mail, news
10 ;; This file is part of FLIM (Faithful Library about Internet Message).
12 ;; This program is free software; you can redistribute it and/or
13 ;; modify it under the terms of the GNU General Public License as
14 ;; published by the Free Software Foundation; either version 2, or (at
15 ;; your option) any later version.
17 ;; This program is distributed in the hope that it will be useful, but
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ;; General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 ;; Boston, MA 02111-1307, USA.
32 (luna-define-class mime-buffer-entity (mime-entity)
39 (luna-define-internal-accessors 'mime-buffer-entity)
42 (luna-define-method initialize-instance :after ((entity mime-buffer-entity)
44 (mime-buffer-entity-set-buffer-internal
45 entity (mime-entity-location-internal entity))
47 (set-buffer (mime-buffer-entity-buffer-internal entity))
48 (setq mime-message-structure entity)
49 (let ((header-start (point-min))
52 (body-end (point-max)))
53 (goto-char header-start)
54 (if (re-search-forward "^$" nil t)
55 (setq header-end (match-end 0)
56 body-start (if (= header-end body-end)
59 (setq header-end (point-min)
60 body-start (point-min)))
62 (narrow-to-region header-start header-end)
63 (mime-entity-set-content-type-internal
65 (let ((str (std11-fetch-field "Content-Type")))
67 (mime-parse-Content-Type str)
70 (mime-buffer-entity-set-header-start-internal entity header-start)
71 (mime-buffer-entity-set-header-end-internal entity header-end)
72 (mime-buffer-entity-set-body-start-internal entity body-start)
73 (mime-buffer-entity-set-body-end-internal entity body-end)
77 (luna-define-method mime-entity-name ((entity mime-buffer-entity))
78 (buffer-name (mime-buffer-entity-buffer-internal entity))
85 (defun mime-parse-multipart (entity)
86 (goto-char (point-min))
87 (let* ((representation-type
88 (mime-entity-representation-type-internal entity))
89 (content-type (mime-entity-content-type-internal entity))
91 (concat "--" (mime-content-type-parameter content-type "boundary")))
92 (delimiter (concat "\n" (regexp-quote dash-boundary)))
93 (close-delimiter (concat delimiter "--[ \t]*$"))
94 (rsep (concat delimiter "[ \t]*\n"))
96 (if (eq (mime-content-type-subtype content-type) 'digest)
97 (make-mime-content-type 'message 'rfc822)
98 (make-mime-content-type 'text 'plain)
100 (body-start (mime-buffer-entity-body-start-internal entity))
101 (body-end (mime-buffer-entity-body-end-internal entity)))
104 (narrow-to-region body-start
105 (if (re-search-backward close-delimiter nil t)
108 (goto-char body-start)
109 (if (re-search-forward
110 (concat "^" (regexp-quote dash-boundary) "[ \t]*\n")
112 (let ((cb (match-end 0))
114 (node-id (mime-entity-node-id-internal entity))
116 (while (re-search-forward rsep nil t)
117 (setq ce (match-beginning 0))
118 (setq ncb (match-end 0))
120 (narrow-to-region cb ce)
121 (setq ret (mime-parse-message representation-type dc-ctl
122 entity (cons i node-id)))
124 (setq children (cons ret children))
125 (goto-char (setq cb ncb))
128 (setq ce (point-max))
130 (narrow-to-region cb ce)
131 (setq ret (mime-parse-message representation-type dc-ctl
132 entity (cons i node-id)))
134 (setq children (cons ret children))
135 (mime-entity-set-children-internal entity (nreverse children))
137 (mime-entity-set-content-type-internal
138 entity (make-mime-content-type 'message 'x-broken))
142 (defun mime-parse-encapsulated (entity)
143 (mime-entity-set-children-internal
146 (narrow-to-region (mime-buffer-entity-body-start-internal entity)
147 (mime-buffer-entity-body-end-internal entity))
148 (list (mime-parse-message
149 (mime-entity-representation-type-internal entity) nil
150 entity (cons 0 (mime-entity-node-id-internal entity))))
153 (defun mime-parse-message (representation-type &optional default-ctl
155 (let ((header-start (point-min))
158 (body-end (point-max))
160 (goto-char header-start)
161 (if (re-search-forward "^$" nil t)
162 (setq header-end (match-end 0)
163 body-start (if (= header-end body-end)
166 (setq header-end (point-min)
167 body-start (point-min)))
169 (narrow-to-region header-start header-end)
170 (setq content-type (or (let ((str (std11-fetch-field "Content-Type")))
172 (mime-parse-Content-Type str)
176 (luna-make-entity representation-type
177 :location (current-buffer)
178 :content-type content-type
181 :buffer (current-buffer)
182 :header-start header-start
183 :header-end header-end
184 :body-start body-start
188 (luna-define-method mime-entity-children ((entity mime-buffer-entity))
189 (let* ((content-type (mime-entity-content-type entity))
190 (primary-type (mime-content-type-primary-type content-type)))
191 (cond ((eq primary-type 'multipart)
192 (mime-parse-multipart entity)
194 ((and (eq primary-type 'message)
195 (memq (mime-content-type-subtype content-type)
196 '(rfc822 news external-body)
198 (mime-parse-encapsulated 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 (defun mime-visible-field-p (field-name visible-fields invisible-fields)
210 (while visible-fields
211 (let ((regexp (car visible-fields)))
212 (if (string-match regexp field-name)
215 (setq visible-fields (cdr visible-fields))
218 (while invisible-fields
219 (let ((regexp (car invisible-fields)))
220 (if (string-match regexp field-name)
223 (setq invisible-fields (cdr invisible-fields))
227 (defun mime-insert-header-from-buffer (buffer start end
228 &optional invisible-fields
230 (let ((the-buf (current-buffer))
231 (mode-obj (mime-find-field-presentation-method 'wide))
233 f-b p f-e field-name len field field-body)
237 (narrow-to-region start end)
239 (while (re-search-forward std11-field-head-regexp nil t)
240 (setq f-b (match-beginning 0)
242 field-name (buffer-substring f-b p)
243 len (string-width field-name)
244 f-e (std11-field-end))
245 (when (mime-visible-field-p field-name
246 visible-fields invisible-fields)
248 (capitalize (buffer-substring f-b (1- p))))
249 field-body (buffer-substring p f-e)
250 field-decoder (inline (mime-find-field-decoder-internal
252 (with-current-buffer the-buf
254 (insert (if field-decoder
255 (funcall field-decoder field-body len)
261 (luna-define-method mime-insert-header ((entity mime-buffer-entity)
262 &optional invisible-fields
264 (mime-insert-header-from-buffer
265 (mime-buffer-entity-buffer-internal entity)
266 (mime-buffer-entity-header-start-internal entity)
267 (mime-buffer-entity-header-end-internal entity)
268 invisible-fields visible-fields)
271 (luna-define-method mime-entity-content ((entity mime-buffer-entity))
273 (set-buffer (mime-buffer-entity-buffer-internal entity))
275 (buffer-substring (mime-buffer-entity-body-start-internal entity)
276 (mime-buffer-entity-body-end-internal entity))
277 (mime-entity-encoding entity))))
279 (luna-define-method mime-insert-text-content ((entity mime-buffer-entity))
281 (decode-mime-charset-string (mime-entity-content entity)
282 (or (mime-content-type-parameter
283 (mime-entity-content-type entity)
285 default-mime-charset)
289 ;;; redefine to speed up
291 (mm-define-method entity-point-min ((entity buffer))
292 (mime-buffer-entity-header-start-internal entity))
294 (mm-define-method entity-point-max ((entity buffer))
295 (mime-buffer-entity-body-end-internal entity))
297 (luna-define-method mime-entity-fetch-field ((entity mime-buffer-entity)
300 (set-buffer (mime-buffer-entity-buffer-internal entity))
302 (narrow-to-region (mime-buffer-entity-header-start-internal entity)
303 (mime-buffer-entity-header-end-internal entity))
304 (std11-fetch-field field-name)
307 (mm-define-method insert-entity-content ((entity buffer))
308 (insert (with-current-buffer (mime-buffer-entity-buffer-internal entity)
310 (buffer-substring (mime-buffer-entity-body-start-internal entity)
311 (mime-buffer-entity-body-end-internal entity))
312 (mime-entity-encoding entity)))))
314 (mm-define-method write-entity-content ((entity buffer) filename)
316 (set-buffer (mime-buffer-entity-buffer-internal entity))
317 (mime-write-decoded-region (mime-buffer-entity-body-start-internal entity)
318 (mime-buffer-entity-body-end-internal entity)
320 (or (mime-entity-encoding entity) "7bit"))
323 (mm-define-method insert-entity ((entity buffer))
324 (insert-buffer-substring (mime-buffer-entity-buffer-internal entity)
325 (mime-buffer-entity-header-start-internal entity)
326 (mime-buffer-entity-body-end-internal entity))
329 (mm-define-method write-entity ((entity buffer) filename)
331 (set-buffer (mime-buffer-entity-buffer-internal entity))
332 (write-region-as-raw-text-CRLF
333 (mime-buffer-entity-header-start-internal entity)
334 (mime-buffer-entity-body-end-internal entity)
338 (mm-define-method write-entity-body ((entity buffer) filename)
340 (set-buffer (mime-buffer-entity-buffer-internal entity))
341 (write-region-as-binary (mime-buffer-entity-body-start-internal entity)
342 (mime-buffer-entity-body-end-internal entity)
350 (luna-define-method mime-entity-header-buffer ((entity mime-buffer-entity))
351 (mime-buffer-entity-buffer-internal entity)
354 (luna-define-method mime-entity-body-buffer ((entity mime-buffer-entity))
355 (mime-buffer-entity-buffer-internal entity)
358 (luna-define-method mime-entity-buffer ((entity mime-buffer-entity))
359 (mime-buffer-entity-buffer-internal entity)
362 (luna-define-method mime-entity-point-min ((entity mime-buffer-entity))
363 (mime-buffer-entity-header-start-internal entity)
366 (luna-define-method mime-entity-point-max ((entity mime-buffer-entity))
367 (mime-buffer-entity-body-end-internal entity)
375 (defun mime-parse-buffer (&optional buffer representation-type)
376 "Parse BUFFER as a MIME message.
377 If buffer is omitted, it parses current-buffer."
379 (if buffer (set-buffer buffer))
380 (setq mime-message-structure
381 (mime-parse-message (or representation-type 'buffer) nil))
390 ;;; mmbuffer.el ends here