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537ab246 BG |
1 | ;;; rmailmm.el --- MIME decoding and display stuff for RMAIL |
2 | ||
73b0cd50 | 3 | ;; Copyright (C) 2006-2011 Free Software Foundation, Inc. |
537ab246 | 4 | |
6ea97e7e GM |
5 | ;; Author: Alexander Pohoyda |
6 | ;; Alex Schroeder | |
537ab246 BG |
7 | ;; Maintainer: FSF |
8 | ;; Keywords: mail | |
bd78fa1d | 9 | ;; Package: rmail |
537ab246 BG |
10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software: you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
15 | ;; the Free Software Foundation, either version 3 of the License, or | |
16 | ;; (at your option) any later version. | |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
24 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. | |
25 | ||
26 | ;;; Commentary: | |
27 | ||
28 | ;; Essentially based on the design of Alexander Pohoyda's MIME | |
73422054 | 29 | ;; extensions (mime-display.el and mime.el). |
d1be4ec2 KH |
30 | |
31 | ;; This file provides two operation modes for viewing a MIME message. | |
32 | ||
33 | ;; (1) When rmail-enable-mime is non-nil (now it is the default), the | |
34 | ;; function `rmail-show-mime' is automatically called. That function | |
35 | ;; shows a MIME message directly in RMAIL's view buffer. | |
36 | ||
37 | ;; (2) When rmail-enable-mime is nil, the command 'v' (or M-x | |
38 | ;; rmail-mime) shows a MIME message in a new buffer "*RMAIL*". | |
39 | ||
40 | ;; Both operations share the intermediate functions rmail-mime-process | |
41 | ;; and rmail-mime-process-multipart as below. | |
42 | ||
43 | ;; rmail-show-mime | |
44 | ;; +- rmail-mime-parse | |
45 | ;; | +- rmail-mime-process <--+------------+ | |
46 | ;; | | +---------+ | | |
47 | ;; | + rmail-mime-process-multipart --+ | |
48 | ;; | | |
49 | ;; + rmail-mime-insert <----------------+ | |
50 | ;; +- rmail-mime-insert-text | | |
51 | ;; +- rmail-mime-insert-bulk | | |
52 | ;; +- rmail-mime-insert-multipart --+ | |
53 | ;; | |
54 | ;; rmail-mime | |
55 | ;; +- rmail-mime-show <----------------------------------+ | |
7c420169 | 56 | ;; +- rmail-mime-process | |
d1be4ec2 KH |
57 | ;; +- rmail-mime-handle | |
58 | ;; +- rmail-mime-text-handler | | |
59 | ;; +- rmail-mime-bulk-handler | | |
60 | ;; | + rmail-mime-insert-bulk | |
61 | ;; +- rmail-mime-multipart-handler | | |
62 | ;; +- rmail-mime-process-multipart --+ | |
63 | ||
64 | ;; In addition, for the case of rmail-enable-mime being non-nil, this | |
65 | ;; file provides two functions rmail-insert-mime-forwarded-message and | |
66 | ;; rmail-insert-mime-resent-message for composing forwarded and resent | |
67 | ;; messages respectively. | |
537ab246 | 68 | |
2e9075d3 GM |
69 | ;; Todo: |
70 | ||
d1be4ec2 KH |
71 | ;; Make rmail-mime-media-type-handlers-alist usable in the first |
72 | ;; operation mode. | |
73 | ;; Handle multipart/alternative in the second operation mode. | |
a92cdd49 | 74 | ;; Offer the option to call external/internal viewers (doc-view, xpdf, etc). |
2e9075d3 | 75 | |
537ab246 BG |
76 | ;;; Code: |
77 | ||
78 | (require 'rmail) | |
79 | (require 'mail-parse) | |
d1be4ec2 | 80 | (require 'message) |
537ab246 | 81 | |
f4ce6150 | 82 | ;;; User options. |
537ab246 | 83 | |
e8652dd9 GM |
84 | (defgroup rmail-mime nil |
85 | "Rmail MIME handling options." | |
86 | :prefix "rmail-mime-" | |
87 | :group 'rmail) | |
88 | ||
537ab246 BG |
89 | (defcustom rmail-mime-media-type-handlers-alist |
90 | '(("multipart/.*" rmail-mime-multipart-handler) | |
91 | ("text/.*" rmail-mime-text-handler) | |
92 | ("text/\\(x-\\)?patch" rmail-mime-bulk-handler) | |
e8652dd9 | 93 | ("\\(image\\|audio\\|video\\|application\\)/.*" rmail-mime-bulk-handler)) |
f4ce6150 | 94 | "Functions to handle various content types. |
c8644de0 GM |
95 | This is an alist with elements of the form (REGEXP FUNCTION ...). |
96 | The first item is a regular expression matching a content-type. | |
97 | The remaining elements are handler functions to run, in order of | |
2e9075d3 GM |
98 | decreasing preference. These are called until one returns non-nil. |
99 | Note that this only applies to items with an inline Content-Disposition, | |
186f7f0b KH |
100 | all others are handled by `rmail-mime-bulk-handler'. |
101 | Note also that this alist is ignored when the variable | |
102 | `rmail-enable-mime' is non-nil." | |
c8644de0 | 103 | :type '(alist :key-type regexp :value-type (repeat function)) |
e8652dd9 GM |
104 | :version "23.1" |
105 | :group 'rmail-mime) | |
537ab246 BG |
106 | |
107 | (defcustom rmail-mime-attachment-dirs-alist | |
f265b4de | 108 | `(("text/.*" "~/Documents") |
537ab246 | 109 | ("image/.*" "~/Pictures") |
f265b4de | 110 | (".*" "~/Desktop" "~" ,temporary-file-directory)) |
f4ce6150 GM |
111 | "Default directories to save attachments of various types into. |
112 | This is an alist with elements of the form (REGEXP DIR ...). | |
113 | The first item is a regular expression matching a content-type. | |
114 | The remaining elements are directories, in order of decreasing preference. | |
115 | The first directory that exists is used." | |
116 | :type '(alist :key-type regexp :value-type (repeat directory)) | |
117 | :version "23.1" | |
e8652dd9 GM |
118 | :group 'rmail-mime) |
119 | ||
120 | (defcustom rmail-mime-show-images 'button | |
121 | "What to do with image attachments that Emacs is capable of displaying. | |
122 | If nil, do nothing special. If `button', add an extra button | |
a92cdd49 GM |
123 | that when pushed displays the image in the buffer. If a number, |
124 | automatically show images if they are smaller than that size (in | |
125 | bytes), otherwise add a display button. Anything else means to | |
126 | automatically display the image in the buffer." | |
e8652dd9 GM |
127 | :type '(choice (const :tag "Add button to view image" button) |
128 | (const :tag "No special treatment" nil) | |
a92cdd49 | 129 | (number :tag "Show if smaller than certain size") |
e8652dd9 GM |
130 | (other :tag "Always show" show)) |
131 | :version "23.2" | |
132 | :group 'rmail-mime) | |
537ab246 | 133 | |
f4ce6150 GM |
134 | ;;; End of user options. |
135 | ||
186f7f0b KH |
136 | ;;; Global variables that always have let-binding when referred. |
137 | ||
138 | (defvar rmail-mime-mbox-buffer nil | |
139 | "Buffer containing the mbox data. | |
140 | The value is usually nil, and bound to a proper value while | |
141 | processing MIME.") | |
142 | ||
143 | (defvar rmail-mime-view-buffer nil | |
144 | "Buffer showing a message. | |
145 | The value is usually nil, and bound to a proper value while | |
146 | processing MIME.") | |
147 | ||
148 | (defvar rmail-mime-coding-system nil | |
149 | "The first coding-system used for decoding a MIME entity. | |
150 | The value is usually nil, and bound to non-nil while inserting | |
151 | MIME entities.") | |
152 | ||
d1be4ec2 KH |
153 | ;;; MIME-entity object |
154 | ||
155 | (defun rmail-mime-entity (type disposition transfer-encoding | |
186f7f0b KH |
156 | display header tagline body children handler) |
157 | "Retrun a newly created MIME-entity object from arguments. | |
d1be4ec2 | 158 | |
186f7f0b | 159 | A MIME-entity is a vector of 9 elements: |
d1be4ec2 | 160 | |
186f7f0b KH |
161 | [TYPE DISPOSITION TRANSFER-ENCODING DISPLAY HEADER TAGLINE BODY |
162 | CHILDREN HANDLER] | |
7c420169 | 163 | |
186f7f0b KH |
164 | TYPE and DISPOSITION correspond to MIME headers Content-Type and |
165 | Cotent-Disposition respectively, and has this format: | |
d1be4ec2 KH |
166 | |
167 | \(VALUE (ATTRIBUTE . VALUE) (ATTRIBUTE . VALUE) ...) | |
168 | ||
169 | VALUE is a string and ATTRIBUTE is a symbol. | |
170 | ||
171 | Consider the following header, for example: | |
172 | ||
173 | Content-Type: multipart/mixed; | |
174 | boundary=\"----=_NextPart_000_0104_01C617E4.BDEC4C40\" | |
175 | ||
176 | The corresponding TYPE argument must be: | |
177 | ||
178 | \(\"multipart/mixed\" | |
179 | \(\"boundary\" . \"----=_NextPart_000_0104_01C617E4.BDEC4C40\")) | |
180 | ||
181 | TRANSFER-ENCODING corresponds to MIME header | |
182 | Content-Transfer-Encoding, and is a lowercased string. | |
183 | ||
186f7f0b KH |
184 | DISPLAY is a vector [CURRENT NEW], where CURRENT indicates how |
185 | the header, tagline, and body of the entity are displayed now, | |
186 | and NEW indicates how their displaying should be updated. | |
187 | Both elements are vector [HEADER-DISPLAY TAGLINE-DISPLAY BODY-DISPLAY], | |
188 | where each element is a symbol for the corresponding item that | |
189 | has these values: | |
190 | nil: not displayed | |
191 | t: displayed by the decoded presentation form | |
192 | raw: displayed by the raw MIME data (for the header and body only) | |
193 | ||
194 | HEADER and BODY are vectors [BEG END DISPLAY-FLAG], where BEG and | |
195 | END specify the region of the header or body lines in RMAIL's | |
196 | data (mbox) buffer, and DISPLAY-FLAG non-nil means that the | |
197 | header or body is, by default, displayed by the decoded | |
198 | presentation form. | |
199 | ||
200 | TAGLINE is a vector [TAG BULK-DATA DISPLAY-FLAG], where TAG is a | |
201 | string indicating the depth and index number of the entity, | |
202 | BULK-DATA is a cons (SIZE . TYPE) indicating the size and type of | |
203 | an attached data, DISPLAY-FLAG non-nil means that the tagline is, | |
204 | by default, displayed. | |
205 | ||
206 | CHILDREN is a list of child MIME-entities. A \"multipart/*\" | |
207 | entity have one or more children. A \"message/rfc822\" entity | |
208 | has just one child. Any other entity has no child. | |
209 | ||
210 | HANDLER is a function to insert the entity according to DISPLAY. | |
211 | It is called with one argument ENTITY." | |
212 | (vector type disposition transfer-encoding | |
213 | display header tagline body children handler)) | |
d1be4ec2 KH |
214 | |
215 | ;; Accessors for a MIME-entity object. | |
216 | (defsubst rmail-mime-entity-type (entity) (aref entity 0)) | |
217 | (defsubst rmail-mime-entity-disposition (entity) (aref entity 1)) | |
218 | (defsubst rmail-mime-entity-transfer-encoding (entity) (aref entity 2)) | |
186f7f0b KH |
219 | (defsubst rmail-mime-entity-display (entity) (aref entity 3)) |
220 | (defsubst rmail-mime-entity-header (entity) (aref entity 4)) | |
221 | (defsubst rmail-mime-entity-tagline (entity) (aref entity 5)) | |
222 | (defsubst rmail-mime-entity-body (entity) (aref entity 6)) | |
223 | (defsubst rmail-mime-entity-children (entity) (aref entity 7)) | |
224 | (defsubst rmail-mime-entity-handler (entity) (aref entity 8)) | |
225 | ||
226 | (defsubst rmail-mime-message-p () | |
227 | "Non-nil if and only if the current message is a MIME." | |
228 | (or (get-text-property (point) 'rmail-mime-entity) | |
229 | (get-text-property (point-min) 'rmail-mime-entity))) | |
f4ce6150 | 230 | |
537ab246 BG |
231 | ;;; Buttons |
232 | ||
233 | (defun rmail-mime-save (button) | |
234 | "Save the attachment using info in the BUTTON." | |
186f7f0b KH |
235 | (let* ((rmail-mime-mbox-buffer rmail-view-buffer) |
236 | (filename (button-get button 'filename)) | |
537ab246 | 237 | (directory (button-get button 'directory)) |
fe6793d4 GM |
238 | (data (button-get button 'data)) |
239 | (ofilename filename)) | |
537ab246 BG |
240 | (setq filename (expand-file-name |
241 | (read-file-name (format "Save as (default: %s): " filename) | |
242 | directory | |
243 | (expand-file-name filename directory)) | |
244 | directory)) | |
fe6793d4 GM |
245 | ;; If arg is just a directory, use the default file name, but in |
246 | ;; that directory (copied from write-file). | |
247 | (if (file-directory-p filename) | |
248 | (setq filename (expand-file-name | |
249 | (file-name-nondirectory ofilename) | |
250 | (file-name-as-directory filename)))) | |
251 | (with-temp-buffer | |
537ab246 | 252 | (set-buffer-file-coding-system 'no-conversion) |
134a027f EZ |
253 | ;; Needed e.g. by jka-compr, so if the attachment is a compressed |
254 | ;; file, the magic signature compares equal with the unibyte | |
255 | ;; signature string recorded in jka-compr-compression-info-list. | |
256 | (set-buffer-multibyte nil) | |
d1be4ec2 KH |
257 | (setq buffer-undo-list t) |
258 | (if (stringp data) | |
259 | (insert data) | |
260 | ;; DATA is a MIME-entity object. | |
261 | (let ((transfer-encoding (rmail-mime-entity-transfer-encoding data)) | |
262 | (body (rmail-mime-entity-body data))) | |
186f7f0b KH |
263 | (insert-buffer-substring rmail-mime-mbox-buffer |
264 | (aref body 0) (aref body 1)) | |
d1be4ec2 KH |
265 | (cond ((string= transfer-encoding "base64") |
266 | (ignore-errors (base64-decode-region (point-min) (point-max)))) | |
267 | ((string= transfer-encoding "quoted-printable") | |
268 | (quoted-printable-decode-region (point-min) (point-max)))))) | |
fe6793d4 | 269 | (write-region nil nil filename nil nil nil t)))) |
537ab246 | 270 | |
fe6793d4 | 271 | (define-button-type 'rmail-mime-save 'action 'rmail-mime-save) |
537ab246 | 272 | |
186f7f0b KH |
273 | (defun rmail-mime-entity-segment (pos &optional entity) |
274 | "Return a vector describing the displayed region of a MIME-entity at POS. | |
275 | Optional 2nd argument ENTITY is the MIME-entity at POS. | |
276 | The value is a vector [ INDEX HEADER TAGLINE BODY END], where | |
e7ca0062 | 277 | INDEX: index into the returned vector indicating where POS is (1..3). |
186f7f0b KH |
278 | HEADER: the position of the beginning of a header |
279 | TAGLINE: the position of the beginning of a tagline | |
280 | BODY: the position of the beginning of a body | |
e7ca0062 | 281 | END: the position of the end of the entity." |
186f7f0b KH |
282 | (save-excursion |
283 | (or entity | |
284 | (setq entity (get-text-property pos 'rmail-mime-entity))) | |
285 | (if (not entity) | |
286 | (vector 1 (point) (point) (point) (point)) | |
287 | (let ((current (aref (rmail-mime-entity-display entity) 0)) | |
288 | (beg (if (and (> pos (point-min)) | |
289 | (eq (get-text-property (1- pos) 'rmail-mime-entity) | |
290 | entity)) | |
291 | (previous-single-property-change pos 'rmail-mime-entity | |
292 | nil (point-min)) | |
293 | pos)) | |
294 | (index 1) | |
295 | tagline-beg body-beg end) | |
296 | (goto-char beg) | |
297 | (if (aref current 0) | |
298 | (search-forward "\n\n" nil t)) | |
299 | (setq tagline-beg (point)) | |
300 | (if (>= pos tagline-beg) | |
301 | (setq index 2)) | |
302 | (if (aref current 1) | |
303 | (forward-line 1)) | |
304 | (setq body-beg (point)) | |
305 | (if (>= pos body-beg) | |
306 | (setq index 3)) | |
307 | (if (aref current 2) | |
308 | (let ((tag (aref (rmail-mime-entity-tagline entity) 0)) | |
309 | tag2) | |
310 | (setq end (next-single-property-change beg 'rmail-mime-entity | |
311 | nil (point-max))) | |
312 | (while (and (< end (point-max)) | |
313 | (setq entity (get-text-property end 'rmail-mime-entity) | |
314 | tag2 (aref (rmail-mime-entity-tagline entity) 0)) | |
315 | (and (> (length tag2) 0) | |
316 | (eq (string-match tag tag2) 0))) | |
317 | (setq end (next-single-property-change end 'rmail-mime-entity | |
318 | nil (point-max))))) | |
319 | (setq end body-beg)) | |
320 | (vector index beg tagline-beg body-beg end))))) | |
321 | ||
186f7f0b KH |
322 | (defun rmail-mime-shown-mode (entity) |
323 | "Make MIME-entity ENTITY displayed by the default way." | |
324 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
325 | (aset new 0 (aref (rmail-mime-entity-header entity) 2)) | |
326 | (aset new 1 (aref (rmail-mime-entity-tagline entity) 2)) | |
e7ca0062 | 327 | (aset new 2 (aref (rmail-mime-entity-body entity) 2))) |
186f7f0b | 328 | (dolist (child (rmail-mime-entity-children entity)) |
e7ca0062 | 329 | (rmail-mime-shown-mode child))) |
d52969e8 | 330 | |
e7ca0062 KH |
331 | (defun rmail-mime-hidden-mode (entity) |
332 | "Make MIME-entity ENTITY displayed in the hidden mode." | |
333 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
334 | (aset new 0 nil) | |
335 | (aset new 1 t) | |
336 | (aset new 2 nil)) | |
186f7f0b | 337 | (dolist (child (rmail-mime-entity-children entity)) |
e7ca0062 | 338 | (rmail-mime-hidden-mode child))) |
186f7f0b KH |
339 | |
340 | (defun rmail-mime-raw-mode (entity) | |
341 | "Make MIME-entity ENTITY displayed in the raw mode." | |
342 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
343 | (aset new 0 'raw) | |
344 | (aset new 1 nil) | |
e7ca0062 KH |
345 | (aset new 2 'raw)) |
346 | (dolist (child (rmail-mime-entity-children entity)) | |
347 | (rmail-mime-raw-mode child))) | |
186f7f0b KH |
348 | |
349 | (defun rmail-mime-toggle-raw (entity) | |
350 | "Toggle on and off the raw display mode of MIME-entity ENTITY." | |
351 | (let* ((pos (if (eobp) (1- (point-max)) (point))) | |
352 | (entity (get-text-property pos 'rmail-mime-entity)) | |
353 | (current (aref (rmail-mime-entity-display entity) 0)) | |
354 | (segment (rmail-mime-entity-segment pos entity))) | |
355 | (if (not (eq (aref current 0) 'raw)) | |
356 | ;; Enter the raw mode. | |
357 | (rmail-mime-raw-mode entity) | |
358 | ;; Enter the shown mode. | |
359 | (rmail-mime-shown-mode entity)) | |
360 | (let ((inhibit-read-only t) | |
361 | (modified (buffer-modified-p))) | |
362 | (save-excursion | |
363 | (goto-char (aref segment 1)) | |
364 | (rmail-mime-insert entity) | |
365 | (restore-buffer-modified-p modified))))) | |
366 | ||
367 | (defun rmail-mime-toggle-hidden () | |
e7ca0062 | 368 | "Hide or show the body of MIME-entity at point." |
186f7f0b KH |
369 | (interactive) |
370 | (when (rmail-mime-message-p) | |
371 | (let* ((rmail-mime-mbox-buffer rmail-view-buffer) | |
372 | (rmail-mime-view-buffer (current-buffer)) | |
373 | (pos (if (eobp) (1- (point-max)) (point))) | |
374 | (entity (get-text-property pos 'rmail-mime-entity)) | |
375 | (current (aref (rmail-mime-entity-display entity) 0)) | |
376 | (segment (rmail-mime-entity-segment pos entity))) | |
377 | (if (aref current 2) | |
378 | ;; Enter the hidden mode. | |
379 | (progn | |
380 | ;; If point is in the body part, move it to the tagline | |
e7ca0062 | 381 | ;; (or the header if tagline is not displayed). |
186f7f0b KH |
382 | (if (= (aref segment 0) 3) |
383 | (goto-char (aref segment 2))) | |
e7ca0062 | 384 | (rmail-mime-hidden-mode entity) |
186f7f0b KH |
385 | ;; If the current entity is the topmost one, display the |
386 | ;; header. | |
387 | (if (and rmail-mime-mbox-buffer (= (aref segment 1) (point-min))) | |
388 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
389 | (aset new 0 t)))) | |
390 | ;; Enter the shown mode. | |
e7ca0062 KH |
391 | (rmail-mime-shown-mode entity) |
392 | ;; Force this body shown. | |
393 | (aset (aref (rmail-mime-entity-display entity) 1) 2 t)) | |
186f7f0b KH |
394 | (let ((inhibit-read-only t) |
395 | (modified (buffer-modified-p)) | |
396 | (rmail-mime-mbox-buffer rmail-view-buffer) | |
397 | (rmail-mime-view-buffer rmail-buffer)) | |
398 | (save-excursion | |
399 | (goto-char (aref segment 1)) | |
400 | (rmail-mime-insert entity) | |
401 | (restore-buffer-modified-p modified)))))) | |
402 | ||
e7ca0062 KH |
403 | (define-key rmail-mode-map "\t" 'forward-button) |
404 | (define-key rmail-mode-map [backtab] 'backward-button) | |
186f7f0b KH |
405 | (define-key rmail-mode-map "\r" 'rmail-mime-toggle-hidden) |
406 | ||
537ab246 BG |
407 | ;;; Handlers |
408 | ||
186f7f0b KH |
409 | (defun rmail-mime-insert-tagline (entity &rest item-list) |
410 | "Insert a tag line for MIME-entity ENTITY. | |
411 | ITEM-LIST is a list of strings or button-elements (list) to be added | |
412 | to the tag line." | |
413 | (insert "[") | |
414 | (let ((tag (aref (rmail-mime-entity-tagline entity) 0))) | |
415 | (if (> (length tag) 0) (insert (substring tag 1) ":"))) | |
e7ca0062 KH |
416 | (insert (car (rmail-mime-entity-type entity)) " ") |
417 | (insert-button (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
418 | (if (aref new 2) "Hide" "Show")) | |
419 | :type 'rmail-mime-toggle | |
420 | 'help-echo "mouse-2, RET: Toggle show/hide") | |
186f7f0b KH |
421 | (dolist (item item-list) |
422 | (when item | |
423 | (if (stringp item) | |
424 | (insert item) | |
425 | (apply 'insert-button item)))) | |
426 | (insert "]\n")) | |
7c420169 | 427 | |
e7ca0062 KH |
428 | (defun rmail-mime-update-tagline (entity) |
429 | "Update the current tag line for MIME-entity ENTITY." | |
430 | (let ((inhibit-read-only t) | |
431 | (modified (buffer-modified-p)) | |
432 | ;; If we are going to show the body, the new button label is | |
433 | ;; "Hide". Otherwise, it's "Show". | |
434 | (label (if (aref (aref (rmail-mime-entity-display entity) 1) 2) "Hide" | |
435 | "Show")) | |
436 | (button (next-button (point)))) | |
437 | ;; Go to the second character of the button "Show" or "Hide". | |
438 | (goto-char (1+ (button-start button))) | |
439 | (setq button (button-at (point))) | |
440 | (save-excursion | |
441 | (insert label) | |
442 | (delete-region (point) (button-end button))) | |
443 | (delete-region (button-start button) (point)) | |
444 | (put-text-property (point) (button-end button) 'rmail-mime-entity entity) | |
445 | (restore-buffer-modified-p modified) | |
446 | (forward-line 1))) | |
447 | ||
186f7f0b KH |
448 | (defun rmail-mime-insert-header (header) |
449 | "Decode and insert a MIME-entity header HEADER in the current buffer. | |
450 | HEADER is a vector [BEG END DEFAULT-STATUS]. | |
451 | See `rmail-mime-entity' for the detail." | |
452 | (let ((pos (point)) | |
453 | (last-coding-system-used nil)) | |
454 | (save-restriction | |
455 | (narrow-to-region pos pos) | |
456 | (with-current-buffer rmail-mime-mbox-buffer | |
457 | (let ((rmail-buffer rmail-mime-mbox-buffer) | |
458 | (rmail-view-buffer rmail-mime-view-buffer)) | |
459 | (save-excursion | |
460 | (goto-char (aref header 0)) | |
461 | (rmail-copy-headers (point) (aref header 1))))) | |
462 | (rfc2047-decode-region pos (point)) | |
463 | (if (and last-coding-system-used (not rmail-mime-coding-system)) | |
1a6a03e4 | 464 | (setq rmail-mime-coding-system (cons last-coding-system-used nil))) |
186f7f0b KH |
465 | (goto-char (point-min)) |
466 | (rmail-highlight-headers) | |
467 | (goto-char (point-max)) | |
468 | (insert "\n")))) | |
469 | ||
1a6a03e4 KH |
470 | (defun rmail-mime-find-header-encoding (header) |
471 | "Retun the last coding system used to decode HEADER. | |
472 | HEADER is a header component of a MIME-entity object (see | |
473 | `rmail-mime-entity')." | |
474 | (with-temp-buffer | |
16bc9688 | 475 | (let ((buf (current-buffer))) |
1a6a03e4 | 476 | (with-current-buffer rmail-mime-mbox-buffer |
16bc9688 KH |
477 | (let ((last-coding-system-used nil) |
478 | (rmail-buffer rmail-mime-mbox-buffer) | |
479 | (rmail-view-buffer buf)) | |
1a6a03e4 KH |
480 | (save-excursion |
481 | (goto-char (aref header 0)) | |
482 | (rmail-copy-headers (point) (aref header 1))))) | |
483 | (rfc2047-decode-region (point-min) (point-max)) | |
484 | last-coding-system-used))) | |
485 | ||
537ab246 BG |
486 | (defun rmail-mime-text-handler (content-type |
487 | content-disposition | |
488 | content-transfer-encoding) | |
489 | "Handle the current buffer as a plain text MIME part." | |
186f7f0b KH |
490 | (rmail-mime-insert-text |
491 | (rmail-mime-entity content-type content-disposition | |
492 | content-transfer-encoding | |
493 | (vector (vector nil nil nil) (vector nil nil t)) | |
494 | (vector nil nil nil) (vector "" (cons nil nil) t) | |
495 | (vector nil nil nil) nil 'rmail-mime-insert-text)) | |
496 | t) | |
497 | ||
498 | (defun rmail-mime-insert-decoded-text (entity) | |
499 | "Decode and insert the text body of MIME-entity ENTITY." | |
d1be4ec2 KH |
500 | (let* ((content-type (rmail-mime-entity-type entity)) |
501 | (charset (cdr (assq 'charset (cdr content-type)))) | |
186f7f0b KH |
502 | (coding-system (if charset |
503 | (coding-system-from-name charset))) | |
504 | (body (rmail-mime-entity-body entity)) | |
505 | (pos (point))) | |
506 | (or (and coding-system (coding-system-p coding-system)) | |
507 | (setq coding-system 'undecided)) | |
508 | (if (stringp (aref body 0)) | |
509 | (insert (aref body 0)) | |
510 | (let ((transfer-encoding (rmail-mime-entity-transfer-encoding entity))) | |
511 | (insert-buffer-substring rmail-mime-mbox-buffer | |
512 | (aref body 0) (aref body 1)) | |
513 | (cond ((string= transfer-encoding "base64") | |
514 | (ignore-errors (base64-decode-region pos (point)))) | |
515 | ((string= transfer-encoding "quoted-printable") | |
516 | (quoted-printable-decode-region pos (point)))))) | |
517 | (decode-coding-region pos (point) coding-system) | |
16bc9688 KH |
518 | (if (and |
519 | (or (not rmail-mime-coding-system) (consp rmail-mime-coding-system)) | |
520 | (not (eq (coding-system-base coding-system) 'us-ascii))) | |
186f7f0b KH |
521 | (setq rmail-mime-coding-system coding-system)) |
522 | (or (bolp) (insert "\n")))) | |
523 | ||
524 | (defun rmail-mime-insert-text (entity) | |
525 | "Presentation handler for a plain text MIME entity." | |
526 | (let ((current (aref (rmail-mime-entity-display entity) 0)) | |
527 | (new (aref (rmail-mime-entity-display entity) 1)) | |
528 | (header (rmail-mime-entity-header entity)) | |
529 | (tagline (rmail-mime-entity-tagline entity)) | |
530 | (body (rmail-mime-entity-body entity)) | |
531 | (beg (point)) | |
532 | (segment (rmail-mime-entity-segment (point) entity))) | |
533 | ||
534 | (or (integerp (aref body 0)) | |
535 | (let ((data (buffer-string))) | |
536 | (aset body 0 data) | |
537 | (delete-region (point-min) (point-max)))) | |
538 | ||
539 | ;; header | |
540 | (if (eq (aref current 0) (aref new 0)) | |
541 | (goto-char (aref segment 2)) | |
542 | (if (aref current 0) | |
543 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
544 | (if (aref new 0) | |
545 | (rmail-mime-insert-header header))) | |
546 | ;; tagline | |
547 | (if (eq (aref current 1) (aref new 1)) | |
e7ca0062 KH |
548 | (if (or (not (aref current 1)) |
549 | (eq (aref current 2) (aref new 2))) | |
550 | (forward-char (- (aref segment 3) (aref segment 2))) | |
551 | (rmail-mime-update-tagline entity)) | |
186f7f0b KH |
552 | (if (aref current 1) |
553 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
554 | (if (aref new 1) | |
555 | (rmail-mime-insert-tagline entity))) | |
556 | ;; body | |
557 | (if (eq (aref current 2) (aref new 2)) | |
558 | (forward-char (- (aref segment 4) (aref segment 3))) | |
559 | (if (aref current 2) | |
560 | (delete-char (- (aref segment 4) (aref segment 3)))) | |
561 | (if (aref new 2) | |
562 | (rmail-mime-insert-decoded-text entity))) | |
563 | (put-text-property beg (point) 'rmail-mime-entity entity))) | |
d1be4ec2 | 564 | |
f4ce6150 | 565 | ;; FIXME move to the test/ directory? |
537ab246 BG |
566 | (defun test-rmail-mime-handler () |
567 | "Test of a mail using no MIME parts at all." | |
568 | (let ((mail "To: alex@gnu.org | |
569 | Content-Type: text/plain; charset=koi8-r | |
570 | Content-Transfer-Encoding: 8bit | |
571 | MIME-Version: 1.0 | |
572 | ||
573 | \372\304\322\301\327\323\324\327\325\312\324\305\41")) | |
574 | (switch-to-buffer (get-buffer-create "*test*")) | |
575 | (erase-buffer) | |
576 | (set-buffer-multibyte nil) | |
577 | (insert mail) | |
578 | (rmail-mime-show t) | |
579 | (set-buffer-multibyte t))) | |
580 | ||
e8652dd9 | 581 | |
186f7f0b KH |
582 | (defun rmail-mime-insert-image (entity) |
583 | "Decode and insert the image body of MIME-entity ENTITY." | |
584 | (let* ((content-type (car (rmail-mime-entity-type entity))) | |
585 | (bulk-data (aref (rmail-mime-entity-tagline entity) 1)) | |
586 | (body (rmail-mime-entity-body entity)) | |
587 | data) | |
588 | (if (stringp (aref body 0)) | |
589 | (setq data (aref body 0)) | |
590 | (let ((rmail-mime-mbox-buffer rmail-view-buffer) | |
591 | (transfer-encoding (rmail-mime-entity-transfer-encoding entity))) | |
d1be4ec2 KH |
592 | (with-temp-buffer |
593 | (set-buffer-multibyte nil) | |
594 | (setq buffer-undo-list t) | |
186f7f0b KH |
595 | (insert-buffer-substring rmail-mime-mbox-buffer |
596 | (aref body 0) (aref body 1)) | |
d1be4ec2 KH |
597 | (cond ((string= transfer-encoding "base64") |
598 | (ignore-errors (base64-decode-region (point-min) (point-max)))) | |
599 | ((string= transfer-encoding "quoted-printable") | |
600 | (quoted-printable-decode-region (point-min) (point-max)))) | |
601 | (setq data | |
602 | (buffer-substring-no-properties (point-min) (point-max)))))) | |
186f7f0b KH |
603 | (insert-image (create-image data (cdr bulk-data) t)) |
604 | (insert "\n"))) | |
e8652dd9 | 605 | |
e7ca0062 KH |
606 | (defun rmail-mime-toggle-button (button) |
607 | "Hide or show the body of the MIME-entity associated with BUTTON." | |
186f7f0b | 608 | (save-excursion |
e7ca0062 | 609 | (goto-char (button-start button)) |
186f7f0b | 610 | (rmail-mime-toggle-hidden))) |
e8652dd9 | 611 | |
e7ca0062 | 612 | (define-button-type 'rmail-mime-toggle 'action 'rmail-mime-toggle-button) |
e8652dd9 GM |
613 | |
614 | ||
537ab246 BG |
615 | (defun rmail-mime-bulk-handler (content-type |
616 | content-disposition | |
e8652dd9 | 617 | content-transfer-encoding) |
2e9075d3 | 618 | "Handle the current buffer as an attachment to download. |
e8652dd9 GM |
619 | For images that Emacs is capable of displaying, the behavior |
620 | depends upon the value of `rmail-mime-show-images'." | |
d1be4ec2 KH |
621 | (rmail-mime-insert-bulk |
622 | (rmail-mime-entity content-type content-disposition content-transfer-encoding | |
186f7f0b KH |
623 | (vector (vector nil nil nil) (vector nil t nil)) |
624 | (vector nil nil nil) (vector "" (cons nil nil) t) | |
625 | (vector nil nil nil) nil 'rmail-mime-insert-bulk))) | |
626 | ||
627 | (defun rmail-mime-set-bulk-data (entity) | |
628 | "Setup the information about the attachment object for MIME-entity ENTITY. | |
629 | The value is non-nil if and only if the attachment object should be shown | |
630 | directly." | |
631 | (let ((content-type (car (rmail-mime-entity-type entity))) | |
632 | (size (cdr (assq 'size (cdr (rmail-mime-entity-disposition entity))))) | |
633 | (bulk-data (aref (rmail-mime-entity-tagline entity) 1)) | |
634 | (body (rmail-mime-entity-body entity)) | |
e7ca0062 | 635 | type to-show) |
186f7f0b KH |
636 | (cond (size |
637 | (setq size (string-to-number size))) | |
638 | ((stringp (aref body 0)) | |
639 | (setq size (length (aref body 0)))) | |
640 | (t | |
641 | ;; Rough estimation of the size. | |
642 | (let ((encoding (rmail-mime-entity-transfer-encoding entity))) | |
643 | (setq size (- (aref body 1) (aref body 0))) | |
644 | (cond ((string= encoding "base64") | |
645 | (setq size (/ (* size 3) 4))) | |
646 | ((string= encoding "quoted-printable") | |
647 | (setq size (/ (* size 7) 3))))))) | |
648 | ||
649 | (cond | |
650 | ((string-match "text/" content-type) | |
651 | (setq type 'text)) | |
652 | ((string-match "image/\\(.*\\)" content-type) | |
653 | (setq type (image-type-from-file-name | |
654 | (concat "." (match-string 1 content-type)))) | |
655 | (if (and (memq type image-types) | |
656 | (image-type-available-p type)) | |
657 | (if (and rmail-mime-show-images | |
658 | (not (eq rmail-mime-show-images 'button)) | |
659 | (or (not (numberp rmail-mime-show-images)) | |
660 | (< size rmail-mime-show-images))) | |
661 | (setq to-show t)) | |
662 | (setq type nil)))) | |
663 | (setcar bulk-data size) | |
664 | (setcdr bulk-data type) | |
665 | to-show)) | |
d1be4ec2 KH |
666 | |
667 | (defun rmail-mime-insert-bulk (entity) | |
186f7f0b | 668 | "Presentation handler for an attachment MIME entity." |
d1be4ec2 KH |
669 | (let* ((content-type (rmail-mime-entity-type entity)) |
670 | (content-disposition (rmail-mime-entity-disposition entity)) | |
186f7f0b KH |
671 | (current (aref (rmail-mime-entity-display entity) 0)) |
672 | (new (aref (rmail-mime-entity-display entity) 1)) | |
673 | (header (rmail-mime-entity-header entity)) | |
674 | (tagline (rmail-mime-entity-tagline entity)) | |
675 | (bulk-data (aref tagline 1)) | |
d1be4ec2 | 676 | (body (rmail-mime-entity-body entity)) |
e7ca0062 | 677 | ;; Find the default directory for this media type. |
d1be4ec2 | 678 | (directory (catch 'directory |
537ab246 BG |
679 | (dolist (entry rmail-mime-attachment-dirs-alist) |
680 | (when (string-match (car entry) (car content-type)) | |
681 | (dolist (dir (cdr entry)) | |
682 | (when (file-directory-p dir) | |
683 | (throw 'directory dir))))))) | |
684 | (filename (or (cdr (assq 'name (cdr content-type))) | |
685 | (cdr (assq 'filename (cdr content-disposition))) | |
686 | "noname")) | |
69220882 | 687 | (units '(B kB MB GB)) |
186f7f0b KH |
688 | (segment (rmail-mime-entity-segment (point) entity)) |
689 | beg data size) | |
690 | ||
691 | (if (integerp (aref body 0)) | |
d1be4ec2 | 692 | (setq data entity |
186f7f0b KH |
693 | size (car bulk-data)) |
694 | (if (stringp (aref body 0)) | |
695 | (setq data (aref body 0)) | |
696 | (setq data (string-as-unibyte (buffer-string))) | |
697 | (aset body 0 data) | |
698 | (rmail-mime-set-bulk-data entity) | |
699 | (delete-region (point-min) (point-max))) | |
700 | (setq size (length data))) | |
d1be4ec2 | 701 | (while (and (> size 1024.0) ; cribbed from gnus-agent-expire-done-message |
69220882 GM |
702 | (cdr units)) |
703 | (setq size (/ size 1024.0) | |
704 | units (cdr units))) | |
186f7f0b KH |
705 | |
706 | (setq beg (point)) | |
707 | ||
708 | ;; header | |
709 | (if (eq (aref current 0) (aref new 0)) | |
710 | (goto-char (aref segment 2)) | |
711 | (if (aref current 0) | |
712 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
713 | (if (aref new 0) | |
714 | (rmail-mime-insert-header header))) | |
715 | ||
716 | ;; tagline | |
717 | (if (eq (aref current 1) (aref new 1)) | |
e7ca0062 KH |
718 | (if (or (not (aref current 1)) |
719 | (eq (aref current 2) (aref new 2))) | |
720 | (forward-char (- (aref segment 3) (aref segment 2))) | |
721 | (rmail-mime-update-tagline entity)) | |
186f7f0b KH |
722 | (if (aref current 1) |
723 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
724 | (if (aref new 1) | |
725 | (rmail-mime-insert-tagline | |
726 | entity | |
e7ca0062 | 727 | " Save:" |
186f7f0b KH |
728 | (list filename |
729 | :type 'rmail-mime-save | |
730 | 'help-echo "mouse-2, RET: Save attachment" | |
731 | 'filename filename | |
732 | 'directory (file-name-as-directory directory) | |
733 | 'data data) | |
734 | (format " (%.0f%s)" size (car units)) | |
e7ca0062 KH |
735 | ;; We don't need this button because the "type" string of a |
736 | ;; tagline is the button to do this. | |
737 | ;; (if (cdr bulk-data) | |
738 | ;; " ") | |
739 | ;; (if (cdr bulk-data) | |
740 | ;; (list "Toggle show/hide" | |
741 | ;; :type 'rmail-mime-image | |
742 | ;; 'help-echo "mouse-2, RET: Toggle show/hide" | |
743 | ;; 'image-type (cdr bulk-data) | |
744 | ;; 'image-data data)) | |
745 | ))) | |
186f7f0b KH |
746 | ;; body |
747 | (if (eq (aref current 2) (aref new 2)) | |
748 | (forward-char (- (aref segment 4) (aref segment 3))) | |
749 | (if (aref current 2) | |
750 | (delete-char (- (aref segment 4) (aref segment 3)))) | |
751 | (if (aref new 2) | |
752 | (cond ((eq (cdr bulk-data) 'text) | |
753 | (rmail-mime-insert-decoded-text entity)) | |
754 | ((cdr bulk-data) | |
362b9d48 GM |
755 | (rmail-mime-insert-image entity)) |
756 | (t | |
757 | ;; As we don't know how to display the body, just | |
758 | ;; insert it as a text. | |
759 | (rmail-mime-insert-decoded-text entity))))) | |
186f7f0b | 760 | (put-text-property beg (point) 'rmail-mime-entity entity))) |
537ab246 BG |
761 | |
762 | (defun test-rmail-mime-bulk-handler () | |
763 | "Test of a mail used as an example in RFC 2183." | |
764 | (let ((mail "Content-Type: image/jpeg | |
765 | Content-Disposition: attachment; filename=genome.jpeg; | |
766 | modification-date=\"Wed, 12 Feb 1997 16:29:51 -0500\"; | |
767 | Content-Description: a complete map of the human genome | |
768 | Content-Transfer-Encoding: base64 | |
769 | ||
770 | iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAMAAABg3Am1AAAABGdBTUEAALGPC/xhBQAAAAZQ | |
771 | TFRF////AAAAVcLTfgAAAPZJREFUeNq9ldsOwzAIQ+3//+l1WlvA5ZLsoUiTto4TB+ISoAjy | |
772 | +ITfRBfcAmgRFFeAm+J6uhdKdFhFWUgDkFsK0oUp/9G2//Kj7Jx+5tSKOdBscgUYiKHRS/me | |
773 | WATQdRUvAK0Bnmshmtn79PpaLBbbOZkjKvRnjRZoRswOkG1wFchKew2g9wXVJVZL/m4+B+vv | |
774 | 9AxQQR2Q33SgAYJzzVACdAWjAfRYzYFO9n6SLnydtQHSMxYDMAKqZ/8FS/lTK+zuq3CtK64L | |
775 | UDwbgUEAUmk2Zyg101d6PhCDySgAvTvDgKiuOrc4dLxUb7UMnhGIexyI+d6U+ABuNAP4Simx | |
776 | lgAAAABJRU5ErkJggg== | |
777 | ")) | |
778 | (switch-to-buffer (get-buffer-create "*test*")) | |
779 | (erase-buffer) | |
780 | (insert mail) | |
781 | (rmail-mime-show))) | |
782 | ||
783 | (defun rmail-mime-multipart-handler (content-type | |
784 | content-disposition | |
785 | content-transfer-encoding) | |
786 | "Handle the current buffer as a multipart MIME body. | |
787 | The current buffer should be narrowed to the body. CONTENT-TYPE, | |
788 | CONTENT-DISPOSITION, and CONTENT-TRANSFER-ENCODING are the values | |
789 | of the respective parsed headers. See `rmail-mime-handle' for their | |
790 | format." | |
d1be4ec2 | 791 | (rmail-mime-process-multipart |
186f7f0b KH |
792 | content-type content-disposition content-transfer-encoding nil) |
793 | t) | |
d1be4ec2 KH |
794 | |
795 | (defun rmail-mime-process-multipart (content-type | |
796 | content-disposition | |
797 | content-transfer-encoding | |
186f7f0b | 798 | parse-tag) |
d1be4ec2 KH |
799 | "Process the current buffer as a multipart MIME body. |
800 | ||
186f7f0b KH |
801 | If PARSE-TAG is nil, modify the current buffer directly for |
802 | showing the MIME body and return nil. | |
d1be4ec2 | 803 | |
186f7f0b KH |
804 | Otherwise, PARSE-TAG is a string indicating the depth and index |
805 | number of the entity. In this case, parse the current buffer and | |
806 | return a list of MIME-entity objects. | |
d1be4ec2 KH |
807 | |
808 | The other arguments are the same as `rmail-mime-multipart-handler'." | |
537ab246 BG |
809 | ;; Some MUAs start boundaries with "--", while it should start |
810 | ;; with "CRLF--", as defined by RFC 2046: | |
811 | ;; The boundary delimiter MUST occur at the beginning of a line, | |
812 | ;; i.e., following a CRLF, and the initial CRLF is considered to | |
813 | ;; be attached to the boundary delimiter line rather than part | |
814 | ;; of the preceding part. | |
815 | ;; We currently don't handle that. | |
816 | (let ((boundary (cdr (assq 'boundary content-type))) | |
186f7f0b KH |
817 | (subtype (cadr (split-string (car content-type) "/"))) |
818 | (index 0) | |
d1be4ec2 | 819 | beg end next entities) |
537ab246 BG |
820 | (unless boundary |
821 | (rmail-mm-get-boundary-error-message | |
822 | "No boundary defined" content-type content-disposition | |
823 | content-transfer-encoding)) | |
824 | (setq boundary (concat "\n--" boundary)) | |
825 | ;; Hide the body before the first bodypart | |
826 | (goto-char (point-min)) | |
827 | (when (and (search-forward boundary nil t) | |
828 | (looking-at "[ \t]*\n")) | |
186f7f0b | 829 | (if parse-tag |
d1be4ec2 KH |
830 | (narrow-to-region (match-end 0) (point-max)) |
831 | (delete-region (point-min) (match-end 0)))) | |
186f7f0b KH |
832 | |
833 | ;; Change content-type to the proper default one for the children. | |
834 | (cond ((string-match "mixed" subtype) | |
835 | (setq content-type '("text/plain"))) | |
836 | ((string-match "digest" subtype) | |
362b9d48 GM |
837 | (setq content-type '("message/rfc822"))) |
838 | (t | |
839 | (setq content-type nil))) | |
186f7f0b | 840 | |
537ab246 BG |
841 | ;; Loop over all body parts, where beg points at the beginning of |
842 | ;; the part and end points at the end of the part. next points at | |
186f7f0b KH |
843 | ;; the beginning of the next part. The current point is just |
844 | ;; after the boundary tag. | |
537ab246 BG |
845 | (setq beg (point-min)) |
846 | (while (search-forward boundary nil t) | |
847 | (setq end (match-beginning 0)) | |
848 | ;; If this is the last boundary according to RFC 2046, hide the | |
849 | ;; epilogue, else hide the boundary only. Use a marker for | |
850 | ;; `next' because `rmail-mime-show' may change the buffer. | |
ffa1fed6 | 851 | (cond ((looking-at "--[ \t]*$") |
537ab246 BG |
852 | (setq next (point-max-marker))) |
853 | ((looking-at "[ \t]*\n") | |
ffa1fed6 | 854 | (setq next (copy-marker (match-end 0) t))) |
537ab246 | 855 | (t |
c1449bff KH |
856 | ;; The original code signalled an error as below, but |
857 | ;; this line may be a boundary of nested multipart. So, | |
858 | ;; we just set `next' to nil to skip this line | |
859 | ;; (rmail-mm-get-boundary-error-message | |
860 | ;; "Malformed boundary" content-type content-disposition | |
861 | ;; content-transfer-encoding) | |
862 | (setq next nil))) | |
863 | ||
864 | (when next | |
865 | (setq index (1+ index)) | |
866 | ;; Handle the part. | |
867 | (if parse-tag | |
868 | (save-restriction | |
869 | (narrow-to-region beg end) | |
870 | (let ((child (rmail-mime-process | |
871 | nil (format "%s/%d" parse-tag index) | |
872 | content-type content-disposition))) | |
873 | ;; Display a tagline. | |
874 | (aset (aref (rmail-mime-entity-display child) 1) 1 | |
875 | (aset (rmail-mime-entity-tagline child) 2 t)) | |
876 | (push child entities))) | |
877 | ||
878 | (delete-region end next) | |
d1be4ec2 KH |
879 | (save-restriction |
880 | (narrow-to-region beg end) | |
c1449bff KH |
881 | (rmail-mime-show))) |
882 | (goto-char (setq beg next)))) | |
186f7f0b KH |
883 | |
884 | (when parse-tag | |
885 | (setq entities (nreverse entities)) | |
886 | (if (string-match "alternative" subtype) | |
887 | ;; Find the best entity to show, and hide all the others. | |
888 | (let (best second) | |
889 | (dolist (child entities) | |
890 | (if (string= (or (car (rmail-mime-entity-disposition child)) | |
891 | (car content-disposition)) | |
892 | "inline") | |
893 | (if (string-match "text/plain" | |
894 | (car (rmail-mime-entity-type child))) | |
895 | (setq best child) | |
896 | (if (string-match "text/.*" | |
897 | (car (rmail-mime-entity-type child))) | |
898 | (setq second child))))) | |
899 | (or best (not second) (setq best second)) | |
900 | (dolist (child entities) | |
e7ca0062 KH |
901 | (unless (eq best child) |
902 | (aset (rmail-mime-entity-body child) 2 nil) | |
903 | (rmail-mime-hidden-mode child))))) | |
186f7f0b | 904 | entities))) |
537ab246 BG |
905 | |
906 | (defun test-rmail-mime-multipart-handler () | |
907 | "Test of a mail used as an example in RFC 2046." | |
908 | (let ((mail "From: Nathaniel Borenstein <nsb@bellcore.com> | |
909 | To: Ned Freed <ned@innosoft.com> | |
910 | Date: Sun, 21 Mar 1993 23:56:48 -0800 (PST) | |
911 | Subject: Sample message | |
912 | MIME-Version: 1.0 | |
913 | Content-type: multipart/mixed; boundary=\"simple boundary\" | |
914 | ||
915 | This is the preamble. It is to be ignored, though it | |
916 | is a handy place for composition agents to include an | |
917 | explanatory note to non-MIME conformant readers. | |
918 | ||
919 | --simple boundary | |
920 | ||
921 | This is implicitly typed plain US-ASCII text. | |
922 | It does NOT end with a linebreak. | |
923 | --simple boundary | |
924 | Content-type: text/plain; charset=us-ascii | |
925 | ||
926 | This is explicitly typed plain US-ASCII text. | |
927 | It DOES end with a linebreak. | |
928 | ||
929 | --simple boundary-- | |
930 | ||
931 | This is the epilogue. It is also to be ignored.")) | |
932 | (switch-to-buffer (get-buffer-create "*test*")) | |
933 | (erase-buffer) | |
934 | (insert mail) | |
935 | (rmail-mime-show t))) | |
936 | ||
186f7f0b KH |
937 | (defun rmail-mime-insert-multipart (entity) |
938 | "Presentation handler for a multipart MIME entity." | |
939 | (let ((current (aref (rmail-mime-entity-display entity) 0)) | |
940 | (new (aref (rmail-mime-entity-display entity) 1)) | |
941 | (header (rmail-mime-entity-header entity)) | |
942 | (tagline (rmail-mime-entity-tagline entity)) | |
943 | (body (rmail-mime-entity-body entity)) | |
944 | (beg (point)) | |
945 | (segment (rmail-mime-entity-segment (point) entity))) | |
946 | ;; header | |
947 | (if (eq (aref current 0) (aref new 0)) | |
948 | (goto-char (aref segment 2)) | |
949 | (if (aref current 0) | |
950 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
951 | (if (aref new 0) | |
952 | (rmail-mime-insert-header header))) | |
953 | ;; tagline | |
954 | (if (eq (aref current 1) (aref new 1)) | |
e7ca0062 KH |
955 | (if (or (not (aref current 1)) |
956 | (eq (aref current 2) (aref new 2))) | |
957 | (forward-char (- (aref segment 3) (aref segment 2))) | |
958 | (rmail-mime-update-tagline entity)) | |
186f7f0b KH |
959 | (if (aref current 1) |
960 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
961 | (if (aref new 1) | |
962 | (rmail-mime-insert-tagline entity))) | |
963 | ||
964 | (put-text-property beg (point) 'rmail-mime-entity entity) | |
e7ca0062 | 965 | |
186f7f0b KH |
966 | ;; body |
967 | (if (eq (aref current 2) (aref new 2)) | |
968 | (forward-char (- (aref segment 4) (aref segment 3))) | |
e7ca0062 KH |
969 | (dolist (child (rmail-mime-entity-children entity)) |
970 | (rmail-mime-insert child))) | |
971 | entity)) | |
186f7f0b | 972 | |
537ab246 BG |
973 | ;;; Main code |
974 | ||
975 | (defun rmail-mime-handle (content-type | |
976 | content-disposition | |
977 | content-transfer-encoding) | |
978 | "Handle the current buffer as a MIME part. | |
979 | The current buffer should be narrowed to the respective body, and | |
980 | point should be at the beginning of the body. | |
981 | ||
982 | CONTENT-TYPE, CONTENT-DISPOSITION, and CONTENT-TRANSFER-ENCODING | |
0c9ff2c5 GM |
983 | are the values of the respective parsed headers. The latter should |
984 | be downcased. The parsed headers for CONTENT-TYPE and CONTENT-DISPOSITION | |
985 | have the form | |
537ab246 BG |
986 | |
987 | \(VALUE . ALIST) | |
988 | ||
989 | In other words: | |
990 | ||
991 | \(VALUE (ATTRIBUTE . VALUE) (ATTRIBUTE . VALUE) ...) | |
992 | ||
993 | VALUE is a string and ATTRIBUTE is a symbol. | |
994 | ||
995 | Consider the following header, for example: | |
996 | ||
997 | Content-Type: multipart/mixed; | |
998 | boundary=\"----=_NextPart_000_0104_01C617E4.BDEC4C40\" | |
999 | ||
1000 | The parsed header value: | |
1001 | ||
1002 | \(\"multipart/mixed\" | |
1003 | \(\"boundary\" . \"----=_NextPart_000_0104_01C617E4.BDEC4C40\"))" | |
1004 | ;; Handle the content transfer encodings we know. Unknown transfer | |
1005 | ;; encodings will be passed on to the various handlers. | |
1006 | (cond ((string= content-transfer-encoding "base64") | |
1007 | (when (ignore-errors | |
1008 | (base64-decode-region (point) (point-max))) | |
1009 | (setq content-transfer-encoding nil))) | |
1010 | ((string= content-transfer-encoding "quoted-printable") | |
1011 | (quoted-printable-decode-region (point) (point-max)) | |
1012 | (setq content-transfer-encoding nil)) | |
1013 | ((string= content-transfer-encoding "8bit") | |
1014 | ;; FIXME: Is this the correct way? | |
c893016b SM |
1015 | ;; No, of course not, it just means there's no decoding to do. |
1016 | ;; (set-buffer-multibyte nil) | |
1017 | (setq content-transfer-encoding nil) | |
1018 | )) | |
537ab246 BG |
1019 | ;; Inline stuff requires work. Attachments are handled by the bulk |
1020 | ;; handler. | |
1021 | (if (string= "inline" (car content-disposition)) | |
1022 | (let ((stop nil)) | |
1023 | (dolist (entry rmail-mime-media-type-handlers-alist) | |
1024 | (when (and (string-match (car entry) (car content-type)) (not stop)) | |
1025 | (progn | |
1026 | (setq stop (funcall (cadr entry) content-type | |
1027 | content-disposition | |
1028 | content-transfer-encoding)))))) | |
1029 | ;; Everything else is an attachment. | |
1030 | (rmail-mime-bulk-handler content-type | |
1031 | content-disposition | |
e7ca0062 KH |
1032 | content-transfer-encoding)) |
1033 | (save-restriction | |
1034 | (widen) | |
1035 | (let ((entity (get-text-property (1- (point)) 'rmail-mime-entity)) | |
1036 | current new) | |
1037 | (when entity | |
1038 | (setq current (aref (rmail-mime-entity-display entity) 0) | |
1039 | new (aref (rmail-mime-entity-display entity) 1)) | |
1040 | (dotimes (i 3) | |
1041 | (aset current i (aref new i))))))) | |
537ab246 BG |
1042 | |
1043 | (defun rmail-mime-show (&optional show-headers) | |
1044 | "Handle the current buffer as a MIME message. | |
1045 | If SHOW-HEADERS is non-nil, then the headers of the current part | |
1046 | will shown as usual for a MIME message. The headers are also | |
1047 | shown for the content type message/rfc822. This function will be | |
1048 | called recursively if multiple parts are available. | |
1049 | ||
1050 | The current buffer must contain a single message. It will be | |
1051 | modified." | |
d1be4ec2 KH |
1052 | (rmail-mime-process show-headers nil)) |
1053 | ||
186f7f0b KH |
1054 | (defun rmail-mime-process (show-headers parse-tag &optional |
1055 | default-content-type | |
1056 | default-content-disposition) | |
537ab246 BG |
1057 | (let ((end (point-min)) |
1058 | content-type | |
1059 | content-transfer-encoding | |
1060 | content-disposition) | |
1061 | ;; `point-min' returns the beginning and `end' points at the end | |
1062 | ;; of the headers. | |
1063 | (goto-char (point-min)) | |
1064 | ;; If we're showing a part without headers, then it will start | |
1065 | ;; with a newline. | |
1066 | (if (eq (char-after) ?\n) | |
1067 | (setq end (1+ (point))) | |
1068 | (when (search-forward "\n\n" nil t) | |
1069 | (setq end (match-end 0)) | |
1070 | (save-restriction | |
1071 | (narrow-to-region (point-min) end) | |
1072 | ;; FIXME: Default disposition of the multipart entities should | |
1073 | ;; be inherited. | |
1074 | (setq content-type | |
1075 | (mail-fetch-field "Content-Type") | |
1076 | content-transfer-encoding | |
1077 | (mail-fetch-field "Content-Transfer-Encoding") | |
1078 | content-disposition | |
1079 | (mail-fetch-field "Content-Disposition"))))) | |
0c9ff2c5 GM |
1080 | ;; Per RFC 2045, C-T-E is case insensitive (bug#5070), but the others |
1081 | ;; are not completely so. Hopefully mail-header-parse-* DTRT. | |
1082 | (if content-transfer-encoding | |
1083 | (setq content-transfer-encoding (downcase content-transfer-encoding))) | |
1084 | (setq content-type | |
1085 | (if content-type | |
e7ca0062 KH |
1086 | (or (mail-header-parse-content-type content-type) |
1087 | '("text/plain")) | |
186f7f0b | 1088 | (or default-content-type '("text/plain")))) |
537ab246 BG |
1089 | (setq content-disposition |
1090 | (if content-disposition | |
1091 | (mail-header-parse-content-disposition content-disposition) | |
1092 | ;; If none specified, we are free to choose what we deem | |
1093 | ;; suitable according to RFC 2183. We like inline. | |
186f7f0b | 1094 | (or default-content-disposition '("inline")))) |
537ab246 BG |
1095 | ;; Unrecognized disposition types are to be treated like |
1096 | ;; attachment according to RFC 2183. | |
1097 | (unless (member (car content-disposition) '("inline" "attachment")) | |
1098 | (setq content-disposition '("attachment"))) | |
d1be4ec2 | 1099 | |
186f7f0b KH |
1100 | (if parse-tag |
1101 | (let* ((is-inline (string= (car content-disposition) "inline")) | |
1102 | (header (vector (point-min) end nil)) | |
1103 | (tagline (vector parse-tag (cons nil nil) t)) | |
1104 | (body (vector end (point-max) is-inline)) | |
1105 | (new (vector (aref header 2) (aref tagline 2) (aref body 2))) | |
1106 | children handler entity) | |
1107 | (cond ((string-match "multipart/.*" (car content-type)) | |
1108 | (save-restriction | |
1109 | (narrow-to-region (1- end) (point-max)) | |
1110 | (setq children (rmail-mime-process-multipart | |
1111 | content-type | |
1112 | content-disposition | |
1113 | content-transfer-encoding | |
1114 | parse-tag) | |
1115 | handler 'rmail-mime-insert-multipart))) | |
1116 | ((string-match "message/rfc822" (car content-type)) | |
1117 | (save-restriction | |
d1be4ec2 | 1118 | (narrow-to-region end (point-max)) |
186f7f0b KH |
1119 | (let* ((msg (rmail-mime-process t parse-tag |
1120 | '("text/plain") '("inline"))) | |
1121 | (msg-new (aref (rmail-mime-entity-display msg) 1))) | |
1122 | ;; Show header of the child. | |
1123 | (aset msg-new 0 t) | |
1124 | (aset (rmail-mime-entity-header msg) 2 t) | |
1125 | ;; Hide tagline of the child. | |
1126 | (aset msg-new 1 nil) | |
1127 | (aset (rmail-mime-entity-tagline msg) 2 nil) | |
1128 | (setq children (list msg) | |
1129 | handler 'rmail-mime-insert-multipart)))) | |
1130 | ((and is-inline (string-match "text/" (car content-type))) | |
1131 | ;; Don't need a tagline. | |
1132 | (aset new 1 (aset tagline 2 nil)) | |
1133 | (setq handler 'rmail-mime-insert-text)) | |
1134 | (t | |
1135 | ;; Force hidden mode. | |
1136 | (aset new 1 (aset tagline 2 t)) | |
1137 | (aset new 2 (aset body 2 nil)) | |
1138 | (setq handler 'rmail-mime-insert-bulk))) | |
1139 | (setq entity (rmail-mime-entity content-type | |
1140 | content-disposition | |
1141 | content-transfer-encoding | |
1142 | (vector (vector nil nil nil) new) | |
1143 | header tagline body children handler)) | |
1144 | (if (and (eq handler 'rmail-mime-insert-bulk) | |
1145 | (rmail-mime-set-bulk-data entity)) | |
1146 | ;; Show the body. | |
1147 | (aset new 2 (aset body 2 t))) | |
1148 | entity) | |
1149 | ||
d1be4ec2 | 1150 | ;; Hide headers and handle the part. |
186f7f0b | 1151 | (put-text-property (point-min) (point-max) 'rmail-mime-entity |
7c420169 | 1152 | (rmail-mime-entity |
186f7f0b KH |
1153 | content-type content-disposition |
1154 | content-transfer-encoding | |
1155 | (vector (vector 'raw nil 'raw) (vector 'raw nil 'raw)) | |
1156 | (vector nil nil 'raw) (vector "" (cons nil nil) nil) | |
1157 | (vector nil nil 'raw) nil nil)) | |
d1be4ec2 KH |
1158 | (save-restriction |
1159 | (cond ((string= (car content-type) "message/rfc822") | |
1160 | (narrow-to-region end (point-max))) | |
1161 | ((not show-headers) | |
1162 | (delete-region (point-min) end))) | |
1163 | (rmail-mime-handle content-type content-disposition | |
1164 | content-transfer-encoding))))) | |
1165 | ||
d1be4ec2 KH |
1166 | (defun rmail-mime-parse () |
1167 | "Parse the current Rmail message as a MIME message. | |
8258ae3f KH |
1168 | The value is a MIME-entiy object (see `rmail-mime-entity'). |
1169 | If an error occurs, return an error message string." | |
186f7f0b KH |
1170 | (let ((rmail-mime-mbox-buffer (if (rmail-buffers-swapped-p) |
1171 | rmail-view-buffer | |
1172 | (current-buffer)))) | |
8258ae3f | 1173 | (condition-case err |
186f7f0b KH |
1174 | (with-current-buffer rmail-mime-mbox-buffer |
1175 | (save-excursion | |
1176 | (goto-char (point-min)) | |
1177 | (let* ((entity (rmail-mime-process t "" | |
1178 | '("text/plain") '("inline"))) | |
1179 | (new (aref (rmail-mime-entity-display entity) 1))) | |
1180 | ;; Show header. | |
1181 | (aset new 0 (aset (rmail-mime-entity-header entity) 2 t)) | |
1182 | ;; Show tagline if and only if body is not shown. | |
1183 | (if (aref new 2) | |
1184 | (aset new 1 (aset (rmail-mime-entity-tagline entity) 2 nil)) | |
1185 | (aset new 1 (aset (rmail-mime-entity-tagline entity) 2 t))) | |
1186 | entity))) | |
8258ae3f | 1187 | (error (format "%s" err))))) |
186f7f0b KH |
1188 | |
1189 | (defun rmail-mime-insert (entity) | |
d1be4ec2 KH |
1190 | "Insert a MIME-entity ENTITY in the current buffer. |
1191 | ||
1192 | This function will be called recursively if multiple parts are | |
1193 | available." | |
186f7f0b KH |
1194 | (let ((current (aref (rmail-mime-entity-display entity) 0)) |
1195 | (new (aref (rmail-mime-entity-display entity) 1))) | |
1196 | (if (not (eq (aref new 0) 'raw)) | |
1197 | ;; Not a raw-mode. Each handler should handle it. | |
1198 | (funcall (rmail-mime-entity-handler entity) entity) | |
1199 | (let ((header (rmail-mime-entity-header entity)) | |
1200 | (tagline (rmail-mime-entity-tagline entity)) | |
1201 | (body (rmail-mime-entity-body entity)) | |
1202 | (beg (point)) | |
1203 | (segment (rmail-mime-entity-segment (point) entity))) | |
1204 | ;; header | |
1205 | (if (eq (aref current 0) (aref new 0)) | |
1206 | (goto-char (aref segment 2)) | |
1207 | (if (aref current 0) | |
1208 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
1209 | (insert-buffer-substring rmail-mime-mbox-buffer | |
1210 | (aref header 0) (aref header 1))) | |
1211 | ;; tagline | |
1212 | (if (aref current 1) | |
1213 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
1214 | ;; body | |
e7ca0062 KH |
1215 | (let ((children (rmail-mime-entity-children entity))) |
1216 | (if children | |
1217 | (progn | |
1218 | (put-text-property beg (point) 'rmail-mime-entity entity) | |
1219 | (dolist (child children) | |
1220 | (rmail-mime-insert child))) | |
1221 | (if (eq (aref current 2) (aref new 2)) | |
1222 | (forward-char (- (aref segment 4) (aref segment 3))) | |
1223 | (if (aref current 2) | |
1224 | (delete-char (- (aref segment 4) (aref segment 3)))) | |
1225 | (insert-buffer-substring rmail-mime-mbox-buffer | |
1226 | (aref body 0) (aref body 1)) | |
1227 | (or (bolp) (insert "\n"))) | |
1228 | (put-text-property beg (point) 'rmail-mime-entity entity))))) | |
186f7f0b KH |
1229 | (dotimes (i 3) |
1230 | (aset current i (aref new i))))) | |
537ab246 | 1231 | |
2e9075d3 GM |
1232 | (define-derived-mode rmail-mime-mode fundamental-mode "RMIME" |
1233 | "Major mode used in `rmail-mime' buffers." | |
1234 | (setq font-lock-defaults '(rmail-font-lock-keywords t t nil nil))) | |
1235 | ||
73422054 | 1236 | ;;;###autoload |
186f7f0b KH |
1237 | (defun rmail-mime (&optional arg) |
1238 | "Toggle displaying of a MIME message. | |
1239 | ||
1240 | The actualy behavior depends on the value of `rmail-enable-mime'. | |
1241 | ||
1242 | If `rmail-enable-mime' is t (default), this command change the | |
1243 | displaying of a MIME message between decoded presentation form | |
1244 | and raw data. | |
1245 | ||
1246 | With ARG, toggle the displaying of the current MIME entity only. | |
1247 | ||
1248 | If `rmail-enable-mime' is nil, this creates a temporary | |
1249 | \"*RMAIL*\" buffer holding a decoded copy of the message. Inline | |
1250 | content-types are handled according to | |
f4ce6150 GM |
1251 | `rmail-mime-media-type-handlers-alist'. By default, this |
1252 | displays text and multipart messages, and offers to download | |
1253 | attachments as specfied by `rmail-mime-attachment-dirs-alist'." | |
186f7f0b KH |
1254 | (interactive "P") |
1255 | (if rmail-enable-mime | |
e7ca0062 KH |
1256 | (with-current-buffer rmail-buffer |
1257 | (if (rmail-mime-message-p) | |
1258 | (let ((rmail-mime-mbox-buffer rmail-view-buffer) | |
1259 | (rmail-mime-view-buffer rmail-buffer) | |
1260 | (entity (get-text-property (point) 'rmail-mime-entity))) | |
1261 | (if arg | |
1262 | (if entity | |
1263 | (rmail-mime-toggle-raw entity)) | |
1264 | (goto-char (point-min)) | |
1265 | (rmail-mime-toggle-raw | |
1266 | (get-text-property (point) 'rmail-mime-entity)))) | |
1267 | (message "Not a MIME message"))) | |
186f7f0b KH |
1268 | (let* ((data (rmail-apply-in-message rmail-current-message 'buffer-string)) |
1269 | (buf (get-buffer-create "*RMAIL*")) | |
1270 | (rmail-mime-mbox-buffer rmail-view-buffer) | |
1271 | (rmail-mime-view-buffer buf)) | |
1272 | (set-buffer buf) | |
1273 | (setq buffer-undo-list t) | |
1274 | (let ((inhibit-read-only t)) | |
1275 | ;; Decoding the message in fundamental mode for speed, only | |
1276 | ;; switching to rmail-mime-mode at the end for display. Eg | |
1277 | ;; quoted-printable-decode-region gets very slow otherwise (Bug#4993). | |
1278 | (fundamental-mode) | |
1279 | (erase-buffer) | |
1280 | (insert data) | |
1281 | (rmail-mime-show t) | |
1282 | (rmail-mime-mode) | |
1283 | (set-buffer-modified-p nil)) | |
1284 | (view-buffer buf)))) | |
537ab246 BG |
1285 | |
1286 | (defun rmail-mm-get-boundary-error-message (message type disposition encoding) | |
1287 | "Return MESSAGE with more information on the main mime components." | |
1288 | (error "%s; type: %s; disposition: %s; encoding: %s" | |
1289 | message type disposition encoding)) | |
1290 | ||
d1be4ec2 | 1291 | (defun rmail-show-mime () |
7e116860 | 1292 | "Function to set in `rmail-show-mime-function' (which see)." |
186f7f0b KH |
1293 | (let ((entity (rmail-mime-parse)) |
1294 | (rmail-mime-mbox-buffer rmail-buffer) | |
1295 | (rmail-mime-view-buffer rmail-view-buffer) | |
1296 | (rmail-mime-coding-system nil)) | |
8258ae3f | 1297 | (if (vectorp entity) |
186f7f0b KH |
1298 | (with-current-buffer rmail-mime-view-buffer |
1299 | (erase-buffer) | |
1300 | (rmail-mime-insert entity) | |
1a6a03e4 KH |
1301 | (if (consp rmail-mime-coding-system) |
1302 | ;; Decoding is done by rfc2047-decode-region only for a | |
1303 | ;; header. But, as the used coding system may have been | |
1304 | ;; overriden by mm-charset-override-alist, we can't | |
1305 | ;; trust (car rmail-mime-coding-system). So, here we | |
1306 | ;; try the decoding again with mm-charset-override-alist | |
1307 | ;; bound to nil. | |
1308 | (let ((mm-charset-override-alist nil)) | |
1309 | (setq rmail-mime-coding-system | |
1310 | (rmail-mime-find-header-encoding | |
1311 | (rmail-mime-entity-header entity))))) | |
1312 | (set-buffer-file-coding-system | |
16bc9688 KH |
1313 | (if rmail-mime-coding-system |
1314 | (coding-system-base rmail-mime-coding-system) | |
1315 | 'undecided) | |
1316 | t t)) | |
8258ae3f KH |
1317 | ;; Decoding failed. ENTITY is an error message. Insert the |
1318 | ;; original message body as is, and show warning. | |
186f7f0b | 1319 | (let ((region (with-current-buffer rmail-mime-mbox-buffer |
7e116860 KH |
1320 | (goto-char (point-min)) |
1321 | (re-search-forward "^$" nil t) | |
1322 | (forward-line 1) | |
8258ae3f | 1323 | (vector (point-min) (point) (point-max))))) |
186f7f0b | 1324 | (with-current-buffer rmail-mime-view-buffer |
7e116860 KH |
1325 | (let ((inhibit-read-only t)) |
1326 | (erase-buffer) | |
8258ae3f | 1327 | (rmail-mime-insert-header region) |
186f7f0b | 1328 | (insert-buffer-substring rmail-mime-mbox-buffer |
8258ae3f | 1329 | (aref region 1) (aref region 2)))) |
186f7f0b | 1330 | (set-buffer-file-coding-system 'no-conversion t t) |
8258ae3f | 1331 | (message "MIME decoding failed: %s" entity))))) |
d1be4ec2 KH |
1332 | |
1333 | (setq rmail-show-mime-function 'rmail-show-mime) | |
1334 | ||
1335 | (defun rmail-insert-mime-forwarded-message (forward-buffer) | |
7a70468f RS |
1336 | "Insert the message in FORWARD-BUFFER as a forwarded message. |
1337 | This is the usual value of `rmail-insert-mime-forwarded-message-function'." | |
1338 | (let ((message-buffer | |
1339 | (with-current-buffer forward-buffer | |
1340 | (if rmail-buffer-swapped | |
1341 | forward-buffer | |
1342 | rmail-view-buffer)))) | |
d1be4ec2 KH |
1343 | (save-restriction |
1344 | (narrow-to-region (point) (point)) | |
7a70468f | 1345 | (message-forward-make-body-mime message-buffer)))) |
d1be4ec2 KH |
1346 | |
1347 | (setq rmail-insert-mime-forwarded-message-function | |
1348 | 'rmail-insert-mime-forwarded-message) | |
1349 | ||
1350 | (defun rmail-insert-mime-resent-message (forward-buffer) | |
7e116860 | 1351 | "Function to set in `rmail-insert-mime-resent-message-function' (which see)." |
d1be4ec2 KH |
1352 | (insert-buffer-substring |
1353 | (with-current-buffer forward-buffer rmail-view-buffer)) | |
1354 | (goto-char (point-min)) | |
1355 | (when (looking-at "From ") | |
1356 | (forward-line 1) | |
1357 | (delete-region (point-min) (point)))) | |
1358 | ||
1359 | (setq rmail-insert-mime-resent-message-function | |
1360 | 'rmail-insert-mime-resent-message) | |
1361 | ||
7e116860 KH |
1362 | (defun rmail-search-mime-message (msg regexp) |
1363 | "Function to set in `rmail-search-mime-message-function' (which see)." | |
1364 | (save-restriction | |
1365 | (narrow-to-region (rmail-msgbeg msg) (rmail-msgend msg)) | |
186f7f0b KH |
1366 | (let* ((rmail-mime-mbox-buffer (current-buffer)) |
1367 | (rmail-mime-view-buffer rmail-view-buffer) | |
1368 | (header-end (save-excursion | |
1369 | (re-search-forward "^$" nil 'move) (point))) | |
1370 | (body-end (point-max)) | |
1371 | (entity (rmail-mime-parse))) | |
7c420169 | 1372 | (or |
7e116860 KH |
1373 | ;; At first, just search the headers. |
1374 | (with-temp-buffer | |
186f7f0b | 1375 | (insert-buffer-substring rmail-mime-mbox-buffer nil header-end) |
7e116860 KH |
1376 | (rfc2047-decode-region (point-min) (point)) |
1377 | (goto-char (point-min)) | |
1378 | (re-search-forward regexp nil t)) | |
1379 | ;; Next, search the body. | |
1380 | (if (and entity | |
1381 | (let* ((content-type (rmail-mime-entity-type entity)) | |
1382 | (charset (cdr (assq 'charset (cdr content-type))))) | |
7c420169 | 1383 | (or (not (string-match "text/.*" (car content-type))) |
7e116860 KH |
1384 | (and charset |
1385 | (not (string= (downcase charset) "us-ascii")))))) | |
1386 | ;; Search the decoded MIME message. | |
1387 | (with-temp-buffer | |
186f7f0b | 1388 | (rmail-mime-insert entity) |
7e116860 KH |
1389 | (goto-char (point-min)) |
1390 | (re-search-forward regexp nil t)) | |
1391 | ;; Search the body without decoding. | |
1392 | (goto-char header-end) | |
1393 | (re-search-forward regexp nil t)))))) | |
1394 | ||
1395 | (setq rmail-search-mime-message-function 'rmail-search-mime-message) | |
1396 | ||
537ab246 BG |
1397 | (provide 'rmailmm) |
1398 | ||
35426db4 GM |
1399 | ;; Local Variables: |
1400 | ;; generated-autoload-file: "rmail.el" | |
1401 | ;; End: | |
1402 | ||
537ab246 | 1403 | ;;; rmailmm.el ends here |