1 ;;; mime.el --- MIME library module
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.
30 (require 'eword-decode)
32 (eval-when-compile (require 'mmgeneric))
36 (autoload 'mime-encode-header-in-buffer "eword-encode"
37 "Encode header fields to network representation, such as MIME encoded-word.")
39 (autoload 'mime-parse-Content-Type "mime-parse"
40 "Parse STRING as field-body of Content-Type field.")
41 (autoload 'mime-read-Content-Type "mime-parse"
42 "Read field-body of Content-Type field from current-buffer,
43 and return parsed it.")
45 (autoload 'mime-parse-Content-Disposition "mime-parse"
46 "Parse STRING as field-body of Content-Disposition field.")
47 (autoload 'mime-read-Content-Disposition "mime-parse"
48 "Read field-body of Content-Disposition field from current-buffer,
49 and return parsed it.")
51 (autoload 'mime-parse-Content-Transfer-Encoding "mime-parse"
52 "Parse STRING as field-body of Content-Transfer-Encoding field.")
53 (autoload 'mime-read-Content-Transfer-Encoding "mime-parse"
54 "Read field-body of Content-Transfer-Encoding field from
55 current-buffer, and return it.")
57 (autoload 'mime-parse-msg-id "mime-parse"
58 "Parse TOKENS as msg-id of Content-Id or Message-Id field.")
60 (autoload 'mime-uri-parse-cid "mime-parse"
61 "Parse STRING as cid URI.")
63 (autoload 'mime-parse-buffer "mime-parse"
64 "Parse BUFFER as a MIME message.")
68 (autoload 'mime-encode-field-body "eword-encode"
69 "Encode FIELD-BODY as FIELD-NAME, and return the result.")
72 ;;; @ Entity Representation and Implementation
75 (defmacro mime-entity-send (entity message &rest args)
76 `(luna-send ,entity ',(intern (format "mime-%s" (eval message))) ,@args))
78 (defun mime-open-entity (type location)
79 "Open an entity and return it.
80 TYPE is representation-type.
81 LOCATION is location of entity. Specification of it is depended on
83 (require (intern (format "mm%s" type)))
84 (luna-make-entity (mm-expand-class-name type) :location location))
86 (luna-define-generic mime-entity-cooked-p (entity)
87 "Return non-nil if contents of ENTITY has been already code-converted.")
90 ;;; @ Entity as node of message
93 (defun mime-entity-children (entity)
94 (or (mime-entity-children-internal entity)
95 (luna-send entity 'mime-entity-children entity)))
97 (defun mime-entity-node-id (entity)
98 (mime-entity-node-id-internal entity))
100 (defun mime-entity-number (entity)
101 "Return entity-number of ENTITY."
102 (reverse (mime-entity-node-id-internal entity)))
104 (defun mime-find-entity-from-number (entity-number message)
105 "Return entity from ENTITY-NUMBER in MESSAGE."
106 (let ((sn (car entity-number)))
109 (let ((rc (nth sn (mime-entity-children message))))
111 (mime-find-entity-from-number (cdr entity-number) rc)
115 (defun mime-find-entity-from-node-id (entity-node-id message)
116 "Return entity from ENTITY-NODE-ID in MESSAGE."
117 (mime-find-entity-from-number (reverse entity-node-id) message))
119 (defun mime-find-entity-from-content-id (cid message)
120 "Return entity from CID in MESSAGE."
121 (if (equal cid (mime-entity-read-field message "Content-Id"))
123 (let ((children (mime-entity-children message))
126 (null (setq ret (mime-find-entity-from-content-id
127 cid (car children)))))
128 (setq children (cdr children)))
131 (defun mime-entity-parent (entity &optional message)
132 "Return mother entity of ENTITY.
133 If MESSAGE is specified, it is regarded as root entity."
134 (if (equal entity message)
136 (mime-entity-parent-internal entity)))
138 (defun mime-root-entity-p (entity &optional message)
139 "Return t if ENTITY is root-entity (message).
140 If MESSAGE is specified, it is regarded as root entity."
141 (null (mime-entity-parent entity message)))
143 (defun mime-find-root-entity (entity)
144 "Return root entity of ENTITY."
145 (let ((p (mime-entity-parent entity)))
148 (mime-entity-parent p))))
151 ;;; @ Header buffer (obsolete)
154 ;; (luna-define-generic mime-entity-header-buffer (entity))
156 ;; (luna-define-generic mime-goto-header-start-point (entity)
157 ;; "Set buffer and point to header-start-position of ENTITY.")
159 ;; (luna-define-generic mime-entity-header-start-point (entity)
160 ;; "Return header-start-position of ENTITY.")
162 ;; (luna-define-generic mime-entity-header-end-point (entity)
163 ;; "Return header-end-position of ENTITY.")
165 ;; (make-obsolete 'mime-entity-header-buffer "don't use it.")
166 ;; (make-obsolete 'mime-goto-header-start-point "don't use it.")
167 ;; (make-obsolete 'mime-entity-header-start-point "don't use it.")
168 ;; (make-obsolete 'mime-entity-header-end-point "don't use it.")
171 ;;; @ Body buffer (obsolete)
174 ;; (luna-define-generic mime-entity-body-buffer (entity))
176 ;; (luna-define-generic mime-goto-body-start-point (entity)
177 ;; "Set buffer and point to body-start-position of ENTITY.")
179 ;; (luna-define-generic mime-goto-body-end-point (entity)
180 ;; "Set buffer and point to body-end-position of ENTITY.")
182 ;; (luna-define-generic mime-entity-body-start-point (entity)
183 ;; "Return body-start-position of ENTITY.")
185 ;; (luna-define-generic mime-entity-body-end-point (entity)
186 ;; "Return body-end-position of ENTITY.")
188 ;; (defalias 'mime-entity-body-start 'mime-entity-body-start-point)
189 ;; (defalias 'mime-entity-body-end 'mime-entity-body-end-point)
191 ;; (make-obsolete 'mime-entity-body-buffer "don't use it.")
192 ;; (make-obsolete 'mime-goto-body-start-point "don't use it.")
193 ;; (make-obsolete 'mime-goto-body-end-point "don't use it.")
194 ;; (make-obsolete 'mime-entity-body-start-point "don't use it.")
195 ;; (make-obsolete 'mime-entity-body-end-point "don't use it.")
196 ;; (make-obsolete 'mime-entity-body-start "don't use it.")
197 ;; (make-obsolete 'mime-entity-body-end "don't use it.")
200 ;;; @ Entity buffer (obsolete)
203 ;; (luna-define-generic mime-entity-buffer (entity))
204 ;; (make-obsolete 'mime-entity-buffer "don't use it.")
206 ;; (luna-define-generic mime-entity-point-min (entity))
207 ;; (make-obsolete 'mime-entity-point-min "don't use it.")
209 ;; (luna-define-generic mime-entity-point-max (entity))
210 ;; (make-obsolete 'mime-entity-point-max "don't use it.")
216 (luna-define-generic mime-insert-entity (entity)
217 "Insert header and body of ENTITY at point.")
219 (luna-define-generic mime-write-entity (entity filename)
220 "Write header and body of ENTITY into FILENAME.")
226 (luna-define-generic mime-entity-body (entity)
227 "Return network representation of ENTITY body.")
229 (luna-define-generic mime-insert-entity-body (entity)
230 "Insert network representation of ENTITY body at point.")
232 (luna-define-generic mime-write-entity-body (entity filename)
233 "Write body of ENTITY into FILENAME.")
239 (luna-define-generic mime-entity-content (entity)
240 "Return content of ENTITY as byte sequence (string).")
242 (luna-define-generic mime-insert-entity-content (entity)
243 "Insert content of ENTITY at point.")
245 (luna-define-generic mime-write-entity-content (entity filename)
246 "Write content of ENTITY into FILENAME.")
248 (luna-define-generic mime-insert-text-content (entity)
249 "Insert decoded text body of ENTITY.")
255 (luna-define-generic mime-entity-fetch-field (entity field-name)
256 "Return the value of the ENTITY's header field whose type is FIELD-NAME.")
258 ;; (defun mime-fetch-field (field-name &optional entity)
259 ;; "Return the value of the ENTITY's header field whose type is FIELD-NAME."
260 ;; (if (symbolp field-name)
261 ;; (setq field-name (symbol-name field-name))
264 ;; (setq entity mime-message-structure))
265 ;; (mime-entity-fetch-field entity field-name)
267 ;; (make-obsolete 'mime-fetch-field 'mime-entity-fetch-field)
269 (defun mime-entity-content-type (entity)
270 (or (mime-entity-content-type-internal entity)
271 (let ((ret (mime-entity-fetch-field entity "Content-Type")))
273 (mime-entity-set-content-type-internal
274 entity (mime-parse-Content-Type ret))
277 (defun mime-entity-content-disposition (entity)
278 (or (mime-entity-content-disposition-internal entity)
279 (let ((ret (mime-entity-fetch-field entity "Content-Disposition")))
281 (mime-entity-set-content-disposition-internal
282 entity (mime-parse-Content-Disposition ret))
285 (defun mime-entity-encoding (entity &optional default-encoding)
286 (or (mime-entity-encoding-internal entity)
287 (let ((ret (mime-entity-fetch-field entity "Content-Transfer-Encoding")))
288 (mime-entity-set-encoding-internal
290 (or (and ret (mime-parse-Content-Transfer-Encoding ret))
291 default-encoding "7bit"))
294 (defvar mime-field-parser-alist
295 '((Return-Path . std11-parse-route-addr)
297 (Reply-To . std11-parse-addresses)
299 (Sender . std11-parse-mailbox)
300 (From . std11-parse-addresses)
302 (Resent-Reply-To . std11-parse-addresses)
304 (Resent-Sender . std11-parse-mailbox)
305 (Resent-From . std11-parse-addresses)
307 (To . std11-parse-addresses)
308 (Resent-To . std11-parse-addresses)
309 (Cc . std11-parse-addresses)
310 (Resent-Cc . std11-parse-addresses)
311 (Bcc . std11-parse-addresses)
312 (Resent-Bcc . std11-parse-addresses)
314 (Message-Id . mime-parse-msg-id)
315 (Recent-Message-Id . mime-parse-msg-id)
317 (In-Reply-To . std11-parse-msg-ids)
318 (References . std11-parse-msg-ids)
320 (Content-Id . mime-parse-msg-id)
323 (defun mime-entity-read-field (entity field-name)
324 (let ((sym (if (symbolp field-name)
327 (setq field-name (symbol-name field-name)))
328 (intern (capitalize (capitalize field-name))))))
329 (cond ((eq sym 'Content-Type)
330 (mime-entity-content-type entity)
332 ((eq sym 'Content-Disposition)
333 (mime-entity-content-disposition entity)
335 ((eq sym 'Content-Transfer-Encoding)
336 (mime-entity-encoding entity)
339 (let* ((header (mime-entity-parsed-header-internal entity))
340 (field (cdr (assq sym header))))
342 (let ((field-body (mime-entity-fetch-field entity field-name))
346 (cdr (assq sym mime-field-parser-alist)))
350 (eword-lexical-analyze field-body))
351 (mime-decode-field-body field-body sym 'plain)
353 (mime-entity-set-parsed-header-internal
354 entity (put-alist sym field header))
357 ;; (defun mime-read-field (field-name &optional entity)
359 ;; (setq entity mime-message-structure))
360 ;; (mime-entity-read-field entity field-name)
362 ;; (make-obsolete 'mime-read-field 'mime-entity-read-field)
364 (luna-define-generic mime-insert-header (entity &optional invisible-fields
366 "Insert before point a decoded header of ENTITY.")
369 ;;; @ Entity Attributes
372 (luna-define-generic mime-entity-name (entity)
373 "Return name of the ENTITY.")
375 (defun mime-entity-uu-filename (entity)
376 (if (member (mime-entity-encoding entity) mime-uuencode-encoding-name-list)
378 (mime-insert-entity-body entity)
379 (if (re-search-forward "^begin [0-9]+ " nil t)
380 (if (looking-at ".+$")
381 (buffer-substring (match-beginning 0)(match-end 0))
384 (defun mime-entity-filename (entity)
385 "Return filename of ENTITY."
386 (or (mime-entity-uu-filename entity)
387 (mime-content-disposition-filename
388 (mime-entity-content-disposition entity))
389 (cdr (let ((param (mime-content-type-parameters
390 (mime-entity-content-type entity))))
391 (or (assoc "name" param)
392 (assoc "x-name" param))
396 (defsubst mime-entity-media-type (entity)
397 (mime-content-type-primary-type (mime-entity-content-type entity)))
398 (defsubst mime-entity-media-subtype (entity)
399 (mime-content-type-subtype (mime-entity-content-type entity)))
400 (defsubst mime-entity-parameters (entity)
401 (mime-content-type-parameters (mime-entity-content-type entity)))
402 (defsubst mime-entity-type/subtype (entity-info)
403 (mime-type/subtype-string (mime-entity-media-type entity-info)
404 (mime-entity-media-subtype entity-info)))
406 (defun mime-entity-set-content-type (entity content-type)
407 (mime-entity-set-content-type-internal entity content-type))
409 (defun mime-entity-set-encoding (entity encoding)
410 (mime-entity-set-encoding-internal entity encoding))
418 ;;; mime.el ends here