Commit | Line | Data |
---|---|---|
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 | |
aa8a705c RS |
156 | display header tagline body children handler |
157 | &optional truncated) | |
186f7f0b | 158 | "Retrun a newly created MIME-entity object from arguments. |
d1be4ec2 | 159 | |
aa8a705c | 160 | A MIME-entity is a vector of 10 elements: |
d1be4ec2 | 161 | |
186f7f0b | 162 | [TYPE DISPOSITION TRANSFER-ENCODING DISPLAY HEADER TAGLINE BODY |
aa8a705c | 163 | CHILDREN HANDLER TRUNCATED] |
7c420169 | 164 | |
186f7f0b | 165 | TYPE and DISPOSITION correspond to MIME headers Content-Type and |
aa8a705c | 166 | Content-Disposition respectively, and have this format: |
d1be4ec2 KH |
167 | |
168 | \(VALUE (ATTRIBUTE . VALUE) (ATTRIBUTE . VALUE) ...) | |
169 | ||
aa8a705c | 170 | Each VALUE is a string and each ATTRIBUTE is a string. |
d1be4ec2 KH |
171 | |
172 | Consider the following header, for example: | |
173 | ||
174 | Content-Type: multipart/mixed; | |
175 | boundary=\"----=_NextPart_000_0104_01C617E4.BDEC4C40\" | |
176 | ||
177 | The corresponding TYPE argument must be: | |
178 | ||
179 | \(\"multipart/mixed\" | |
180 | \(\"boundary\" . \"----=_NextPart_000_0104_01C617E4.BDEC4C40\")) | |
181 | ||
182 | TRANSFER-ENCODING corresponds to MIME header | |
183 | Content-Transfer-Encoding, and is a lowercased string. | |
184 | ||
186f7f0b KH |
185 | DISPLAY is a vector [CURRENT NEW], where CURRENT indicates how |
186 | the header, tagline, and body of the entity are displayed now, | |
187 | and NEW indicates how their displaying should be updated. | |
188 | Both elements are vector [HEADER-DISPLAY TAGLINE-DISPLAY BODY-DISPLAY], | |
189 | where each element is a symbol for the corresponding item that | |
190 | has these values: | |
191 | nil: not displayed | |
192 | t: displayed by the decoded presentation form | |
193 | raw: displayed by the raw MIME data (for the header and body only) | |
194 | ||
195 | HEADER and BODY are vectors [BEG END DISPLAY-FLAG], where BEG and | |
196 | END specify the region of the header or body lines in RMAIL's | |
197 | data (mbox) buffer, and DISPLAY-FLAG non-nil means that the | |
198 | header or body is, by default, displayed by the decoded | |
199 | presentation form. | |
200 | ||
201 | TAGLINE is a vector [TAG BULK-DATA DISPLAY-FLAG], where TAG is a | |
202 | string indicating the depth and index number of the entity, | |
203 | BULK-DATA is a cons (SIZE . TYPE) indicating the size and type of | |
204 | an attached data, DISPLAY-FLAG non-nil means that the tagline is, | |
205 | by default, displayed. | |
206 | ||
207 | CHILDREN is a list of child MIME-entities. A \"multipart/*\" | |
208 | entity have one or more children. A \"message/rfc822\" entity | |
209 | has just one child. Any other entity has no child. | |
210 | ||
211 | HANDLER is a function to insert the entity according to DISPLAY. | |
aa8a705c RS |
212 | It is called with one argument ENTITY. |
213 | ||
214 | TRUNCATED is non-nil if the text of this entity was truncated." | |
215 | ||
186f7f0b | 216 | (vector type disposition transfer-encoding |
aa8a705c | 217 | display header tagline body children handler truncated)) |
d1be4ec2 KH |
218 | |
219 | ;; Accessors for a MIME-entity object. | |
220 | (defsubst rmail-mime-entity-type (entity) (aref entity 0)) | |
221 | (defsubst rmail-mime-entity-disposition (entity) (aref entity 1)) | |
222 | (defsubst rmail-mime-entity-transfer-encoding (entity) (aref entity 2)) | |
186f7f0b KH |
223 | (defsubst rmail-mime-entity-display (entity) (aref entity 3)) |
224 | (defsubst rmail-mime-entity-header (entity) (aref entity 4)) | |
225 | (defsubst rmail-mime-entity-tagline (entity) (aref entity 5)) | |
226 | (defsubst rmail-mime-entity-body (entity) (aref entity 6)) | |
227 | (defsubst rmail-mime-entity-children (entity) (aref entity 7)) | |
228 | (defsubst rmail-mime-entity-handler (entity) (aref entity 8)) | |
aa8a705c RS |
229 | (defsubst rmail-mime-entity-truncated (entity) (aref entity 9)) |
230 | (defsubst rmail-mime-entity-set-truncated (entity truncated) | |
231 | (aset entity 9 truncated)) | |
186f7f0b KH |
232 | |
233 | (defsubst rmail-mime-message-p () | |
234 | "Non-nil if and only if the current message is a MIME." | |
235 | (or (get-text-property (point) 'rmail-mime-entity) | |
236 | (get-text-property (point-min) 'rmail-mime-entity))) | |
f4ce6150 | 237 | |
537ab246 BG |
238 | ;;; Buttons |
239 | ||
240 | (defun rmail-mime-save (button) | |
241 | "Save the attachment using info in the BUTTON." | |
186f7f0b KH |
242 | (let* ((rmail-mime-mbox-buffer rmail-view-buffer) |
243 | (filename (button-get button 'filename)) | |
537ab246 | 244 | (directory (button-get button 'directory)) |
fe6793d4 GM |
245 | (data (button-get button 'data)) |
246 | (ofilename filename)) | |
aa8a705c RS |
247 | (if (and (not (stringp data)) |
248 | (rmail-mime-entity-truncated data)) | |
249 | (unless (y-or-n-p "This entity is truncated; save anyway? ") | |
250 | (error "Aborted"))) | |
537ab246 BG |
251 | (setq filename (expand-file-name |
252 | (read-file-name (format "Save as (default: %s): " filename) | |
253 | directory | |
254 | (expand-file-name filename directory)) | |
255 | directory)) | |
fe6793d4 GM |
256 | ;; If arg is just a directory, use the default file name, but in |
257 | ;; that directory (copied from write-file). | |
258 | (if (file-directory-p filename) | |
259 | (setq filename (expand-file-name | |
260 | (file-name-nondirectory ofilename) | |
261 | (file-name-as-directory filename)))) | |
262 | (with-temp-buffer | |
537ab246 | 263 | (set-buffer-file-coding-system 'no-conversion) |
134a027f EZ |
264 | ;; Needed e.g. by jka-compr, so if the attachment is a compressed |
265 | ;; file, the magic signature compares equal with the unibyte | |
266 | ;; signature string recorded in jka-compr-compression-info-list. | |
267 | (set-buffer-multibyte nil) | |
d1be4ec2 KH |
268 | (setq buffer-undo-list t) |
269 | (if (stringp data) | |
270 | (insert data) | |
271 | ;; DATA is a MIME-entity object. | |
272 | (let ((transfer-encoding (rmail-mime-entity-transfer-encoding data)) | |
273 | (body (rmail-mime-entity-body data))) | |
186f7f0b KH |
274 | (insert-buffer-substring rmail-mime-mbox-buffer |
275 | (aref body 0) (aref body 1)) | |
d1be4ec2 KH |
276 | (cond ((string= transfer-encoding "base64") |
277 | (ignore-errors (base64-decode-region (point-min) (point-max)))) | |
278 | ((string= transfer-encoding "quoted-printable") | |
279 | (quoted-printable-decode-region (point-min) (point-max)))))) | |
fe6793d4 | 280 | (write-region nil nil filename nil nil nil t)))) |
537ab246 | 281 | |
fe6793d4 | 282 | (define-button-type 'rmail-mime-save 'action 'rmail-mime-save) |
537ab246 | 283 | |
186f7f0b KH |
284 | (defun rmail-mime-entity-segment (pos &optional entity) |
285 | "Return a vector describing the displayed region of a MIME-entity at POS. | |
286 | Optional 2nd argument ENTITY is the MIME-entity at POS. | |
287 | The value is a vector [ INDEX HEADER TAGLINE BODY END], where | |
e7ca0062 | 288 | INDEX: index into the returned vector indicating where POS is (1..3). |
186f7f0b KH |
289 | HEADER: the position of the beginning of a header |
290 | TAGLINE: the position of the beginning of a tagline | |
291 | BODY: the position of the beginning of a body | |
e7ca0062 | 292 | END: the position of the end of the entity." |
186f7f0b KH |
293 | (save-excursion |
294 | (or entity | |
295 | (setq entity (get-text-property pos 'rmail-mime-entity))) | |
296 | (if (not entity) | |
297 | (vector 1 (point) (point) (point) (point)) | |
298 | (let ((current (aref (rmail-mime-entity-display entity) 0)) | |
299 | (beg (if (and (> pos (point-min)) | |
300 | (eq (get-text-property (1- pos) 'rmail-mime-entity) | |
301 | entity)) | |
302 | (previous-single-property-change pos 'rmail-mime-entity | |
303 | nil (point-min)) | |
304 | pos)) | |
305 | (index 1) | |
306 | tagline-beg body-beg end) | |
307 | (goto-char beg) | |
308 | (if (aref current 0) | |
309 | (search-forward "\n\n" nil t)) | |
310 | (setq tagline-beg (point)) | |
311 | (if (>= pos tagline-beg) | |
312 | (setq index 2)) | |
313 | (if (aref current 1) | |
314 | (forward-line 1)) | |
315 | (setq body-beg (point)) | |
316 | (if (>= pos body-beg) | |
317 | (setq index 3)) | |
318 | (if (aref current 2) | |
319 | (let ((tag (aref (rmail-mime-entity-tagline entity) 0)) | |
320 | tag2) | |
321 | (setq end (next-single-property-change beg 'rmail-mime-entity | |
322 | nil (point-max))) | |
323 | (while (and (< end (point-max)) | |
324 | (setq entity (get-text-property end 'rmail-mime-entity) | |
325 | tag2 (aref (rmail-mime-entity-tagline entity) 0)) | |
326 | (and (> (length tag2) 0) | |
327 | (eq (string-match tag tag2) 0))) | |
328 | (setq end (next-single-property-change end 'rmail-mime-entity | |
329 | nil (point-max))))) | |
330 | (setq end body-beg)) | |
331 | (vector index beg tagline-beg body-beg end))))) | |
332 | ||
186f7f0b KH |
333 | (defun rmail-mime-shown-mode (entity) |
334 | "Make MIME-entity ENTITY displayed by the default way." | |
335 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
336 | (aset new 0 (aref (rmail-mime-entity-header entity) 2)) | |
337 | (aset new 1 (aref (rmail-mime-entity-tagline entity) 2)) | |
e7ca0062 | 338 | (aset new 2 (aref (rmail-mime-entity-body entity) 2))) |
186f7f0b | 339 | (dolist (child (rmail-mime-entity-children entity)) |
e7ca0062 | 340 | (rmail-mime-shown-mode child))) |
d52969e8 | 341 | |
e7ca0062 KH |
342 | (defun rmail-mime-hidden-mode (entity) |
343 | "Make MIME-entity ENTITY displayed in the hidden mode." | |
344 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
345 | (aset new 0 nil) | |
346 | (aset new 1 t) | |
347 | (aset new 2 nil)) | |
186f7f0b | 348 | (dolist (child (rmail-mime-entity-children entity)) |
e7ca0062 | 349 | (rmail-mime-hidden-mode child))) |
186f7f0b KH |
350 | |
351 | (defun rmail-mime-raw-mode (entity) | |
352 | "Make MIME-entity ENTITY displayed in the raw mode." | |
353 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
354 | (aset new 0 'raw) | |
355 | (aset new 1 nil) | |
e7ca0062 KH |
356 | (aset new 2 'raw)) |
357 | (dolist (child (rmail-mime-entity-children entity)) | |
358 | (rmail-mime-raw-mode child))) | |
186f7f0b KH |
359 | |
360 | (defun rmail-mime-toggle-raw (entity) | |
361 | "Toggle on and off the raw display mode of MIME-entity ENTITY." | |
362 | (let* ((pos (if (eobp) (1- (point-max)) (point))) | |
363 | (entity (get-text-property pos 'rmail-mime-entity)) | |
364 | (current (aref (rmail-mime-entity-display entity) 0)) | |
365 | (segment (rmail-mime-entity-segment pos entity))) | |
366 | (if (not (eq (aref current 0) 'raw)) | |
367 | ;; Enter the raw mode. | |
368 | (rmail-mime-raw-mode entity) | |
369 | ;; Enter the shown mode. | |
370 | (rmail-mime-shown-mode entity)) | |
371 | (let ((inhibit-read-only t) | |
372 | (modified (buffer-modified-p))) | |
373 | (save-excursion | |
374 | (goto-char (aref segment 1)) | |
375 | (rmail-mime-insert entity) | |
376 | (restore-buffer-modified-p modified))))) | |
377 | ||
378 | (defun rmail-mime-toggle-hidden () | |
e7ca0062 | 379 | "Hide or show the body of MIME-entity at point." |
186f7f0b KH |
380 | (interactive) |
381 | (when (rmail-mime-message-p) | |
382 | (let* ((rmail-mime-mbox-buffer rmail-view-buffer) | |
383 | (rmail-mime-view-buffer (current-buffer)) | |
384 | (pos (if (eobp) (1- (point-max)) (point))) | |
385 | (entity (get-text-property pos 'rmail-mime-entity)) | |
386 | (current (aref (rmail-mime-entity-display entity) 0)) | |
387 | (segment (rmail-mime-entity-segment pos entity))) | |
388 | (if (aref current 2) | |
389 | ;; Enter the hidden mode. | |
390 | (progn | |
391 | ;; If point is in the body part, move it to the tagline | |
e7ca0062 | 392 | ;; (or the header if tagline is not displayed). |
186f7f0b KH |
393 | (if (= (aref segment 0) 3) |
394 | (goto-char (aref segment 2))) | |
e7ca0062 | 395 | (rmail-mime-hidden-mode entity) |
186f7f0b KH |
396 | ;; If the current entity is the topmost one, display the |
397 | ;; header. | |
398 | (if (and rmail-mime-mbox-buffer (= (aref segment 1) (point-min))) | |
399 | (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
400 | (aset new 0 t)))) | |
aa8a705c RS |
401 | ;; Query as a warning before showing if truncated. |
402 | (if (and (not (stringp entity)) | |
403 | (rmail-mime-entity-truncated entity)) | |
404 | (unless (y-or-n-p "This entity is truncated; show anyway? ") | |
405 | (error "Aborted"))) | |
186f7f0b | 406 | ;; Enter the shown mode. |
e7ca0062 KH |
407 | (rmail-mime-shown-mode entity) |
408 | ;; Force this body shown. | |
409 | (aset (aref (rmail-mime-entity-display entity) 1) 2 t)) | |
186f7f0b KH |
410 | (let ((inhibit-read-only t) |
411 | (modified (buffer-modified-p)) | |
412 | (rmail-mime-mbox-buffer rmail-view-buffer) | |
413 | (rmail-mime-view-buffer rmail-buffer)) | |
414 | (save-excursion | |
415 | (goto-char (aref segment 1)) | |
416 | (rmail-mime-insert entity) | |
417 | (restore-buffer-modified-p modified)))))) | |
418 | ||
e7ca0062 KH |
419 | (define-key rmail-mode-map "\t" 'forward-button) |
420 | (define-key rmail-mode-map [backtab] 'backward-button) | |
186f7f0b KH |
421 | (define-key rmail-mode-map "\r" 'rmail-mime-toggle-hidden) |
422 | ||
537ab246 BG |
423 | ;;; Handlers |
424 | ||
186f7f0b KH |
425 | (defun rmail-mime-insert-tagline (entity &rest item-list) |
426 | "Insert a tag line for MIME-entity ENTITY. | |
427 | ITEM-LIST is a list of strings or button-elements (list) to be added | |
428 | to the tag line." | |
429 | (insert "[") | |
430 | (let ((tag (aref (rmail-mime-entity-tagline entity) 0))) | |
431 | (if (> (length tag) 0) (insert (substring tag 1) ":"))) | |
e7ca0062 KH |
432 | (insert (car (rmail-mime-entity-type entity)) " ") |
433 | (insert-button (let ((new (aref (rmail-mime-entity-display entity) 1))) | |
434 | (if (aref new 2) "Hide" "Show")) | |
435 | :type 'rmail-mime-toggle | |
436 | 'help-echo "mouse-2, RET: Toggle show/hide") | |
186f7f0b KH |
437 | (dolist (item item-list) |
438 | (when item | |
439 | (if (stringp item) | |
440 | (insert item) | |
441 | (apply 'insert-button item)))) | |
442 | (insert "]\n")) | |
7c420169 | 443 | |
e7ca0062 KH |
444 | (defun rmail-mime-update-tagline (entity) |
445 | "Update the current tag line for MIME-entity ENTITY." | |
446 | (let ((inhibit-read-only t) | |
447 | (modified (buffer-modified-p)) | |
448 | ;; If we are going to show the body, the new button label is | |
449 | ;; "Hide". Otherwise, it's "Show". | |
450 | (label (if (aref (aref (rmail-mime-entity-display entity) 1) 2) "Hide" | |
451 | "Show")) | |
452 | (button (next-button (point)))) | |
453 | ;; Go to the second character of the button "Show" or "Hide". | |
454 | (goto-char (1+ (button-start button))) | |
455 | (setq button (button-at (point))) | |
456 | (save-excursion | |
457 | (insert label) | |
458 | (delete-region (point) (button-end button))) | |
459 | (delete-region (button-start button) (point)) | |
460 | (put-text-property (point) (button-end button) 'rmail-mime-entity entity) | |
461 | (restore-buffer-modified-p modified) | |
462 | (forward-line 1))) | |
463 | ||
186f7f0b KH |
464 | (defun rmail-mime-insert-header (header) |
465 | "Decode and insert a MIME-entity header HEADER in the current buffer. | |
466 | HEADER is a vector [BEG END DEFAULT-STATUS]. | |
467 | See `rmail-mime-entity' for the detail." | |
468 | (let ((pos (point)) | |
469 | (last-coding-system-used nil)) | |
470 | (save-restriction | |
471 | (narrow-to-region pos pos) | |
472 | (with-current-buffer rmail-mime-mbox-buffer | |
473 | (let ((rmail-buffer rmail-mime-mbox-buffer) | |
474 | (rmail-view-buffer rmail-mime-view-buffer)) | |
475 | (save-excursion | |
476 | (goto-char (aref header 0)) | |
477 | (rmail-copy-headers (point) (aref header 1))))) | |
478 | (rfc2047-decode-region pos (point)) | |
479 | (if (and last-coding-system-used (not rmail-mime-coding-system)) | |
1a6a03e4 | 480 | (setq rmail-mime-coding-system (cons last-coding-system-used nil))) |
186f7f0b KH |
481 | (goto-char (point-min)) |
482 | (rmail-highlight-headers) | |
483 | (goto-char (point-max)) | |
484 | (insert "\n")))) | |
485 | ||
1a6a03e4 KH |
486 | (defun rmail-mime-find-header-encoding (header) |
487 | "Retun the last coding system used to decode HEADER. | |
488 | HEADER is a header component of a MIME-entity object (see | |
489 | `rmail-mime-entity')." | |
490 | (with-temp-buffer | |
16bc9688 | 491 | (let ((buf (current-buffer))) |
1a6a03e4 | 492 | (with-current-buffer rmail-mime-mbox-buffer |
16bc9688 KH |
493 | (let ((last-coding-system-used nil) |
494 | (rmail-buffer rmail-mime-mbox-buffer) | |
495 | (rmail-view-buffer buf)) | |
1a6a03e4 KH |
496 | (save-excursion |
497 | (goto-char (aref header 0)) | |
498 | (rmail-copy-headers (point) (aref header 1))))) | |
499 | (rfc2047-decode-region (point-min) (point-max)) | |
500 | last-coding-system-used))) | |
501 | ||
537ab246 BG |
502 | (defun rmail-mime-text-handler (content-type |
503 | content-disposition | |
504 | content-transfer-encoding) | |
505 | "Handle the current buffer as a plain text MIME part." | |
186f7f0b KH |
506 | (rmail-mime-insert-text |
507 | (rmail-mime-entity content-type content-disposition | |
508 | content-transfer-encoding | |
509 | (vector (vector nil nil nil) (vector nil nil t)) | |
510 | (vector nil nil nil) (vector "" (cons nil nil) t) | |
511 | (vector nil nil nil) nil 'rmail-mime-insert-text)) | |
512 | t) | |
513 | ||
514 | (defun rmail-mime-insert-decoded-text (entity) | |
515 | "Decode and insert the text body of MIME-entity ENTITY." | |
d1be4ec2 KH |
516 | (let* ((content-type (rmail-mime-entity-type entity)) |
517 | (charset (cdr (assq 'charset (cdr content-type)))) | |
186f7f0b KH |
518 | (coding-system (if charset |
519 | (coding-system-from-name charset))) | |
520 | (body (rmail-mime-entity-body entity)) | |
521 | (pos (point))) | |
522 | (or (and coding-system (coding-system-p coding-system)) | |
523 | (setq coding-system 'undecided)) | |
524 | (if (stringp (aref body 0)) | |
525 | (insert (aref body 0)) | |
526 | (let ((transfer-encoding (rmail-mime-entity-transfer-encoding entity))) | |
527 | (insert-buffer-substring rmail-mime-mbox-buffer | |
528 | (aref body 0) (aref body 1)) | |
529 | (cond ((string= transfer-encoding "base64") | |
530 | (ignore-errors (base64-decode-region pos (point)))) | |
531 | ((string= transfer-encoding "quoted-printable") | |
532 | (quoted-printable-decode-region pos (point)))))) | |
533 | (decode-coding-region pos (point) coding-system) | |
16bc9688 KH |
534 | (if (and |
535 | (or (not rmail-mime-coding-system) (consp rmail-mime-coding-system)) | |
536 | (not (eq (coding-system-base coding-system) 'us-ascii))) | |
186f7f0b KH |
537 | (setq rmail-mime-coding-system coding-system)) |
538 | (or (bolp) (insert "\n")))) | |
539 | ||
540 | (defun rmail-mime-insert-text (entity) | |
541 | "Presentation handler for a plain text MIME entity." | |
542 | (let ((current (aref (rmail-mime-entity-display entity) 0)) | |
543 | (new (aref (rmail-mime-entity-display entity) 1)) | |
544 | (header (rmail-mime-entity-header entity)) | |
545 | (tagline (rmail-mime-entity-tagline entity)) | |
546 | (body (rmail-mime-entity-body entity)) | |
547 | (beg (point)) | |
548 | (segment (rmail-mime-entity-segment (point) entity))) | |
549 | ||
550 | (or (integerp (aref body 0)) | |
551 | (let ((data (buffer-string))) | |
552 | (aset body 0 data) | |
553 | (delete-region (point-min) (point-max)))) | |
554 | ||
555 | ;; header | |
556 | (if (eq (aref current 0) (aref new 0)) | |
557 | (goto-char (aref segment 2)) | |
558 | (if (aref current 0) | |
559 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
560 | (if (aref new 0) | |
561 | (rmail-mime-insert-header header))) | |
562 | ;; tagline | |
563 | (if (eq (aref current 1) (aref new 1)) | |
e7ca0062 KH |
564 | (if (or (not (aref current 1)) |
565 | (eq (aref current 2) (aref new 2))) | |
566 | (forward-char (- (aref segment 3) (aref segment 2))) | |
567 | (rmail-mime-update-tagline entity)) | |
186f7f0b KH |
568 | (if (aref current 1) |
569 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
570 | (if (aref new 1) | |
571 | (rmail-mime-insert-tagline entity))) | |
572 | ;; body | |
573 | (if (eq (aref current 2) (aref new 2)) | |
574 | (forward-char (- (aref segment 4) (aref segment 3))) | |
575 | (if (aref current 2) | |
576 | (delete-char (- (aref segment 4) (aref segment 3)))) | |
577 | (if (aref new 2) | |
578 | (rmail-mime-insert-decoded-text entity))) | |
579 | (put-text-property beg (point) 'rmail-mime-entity entity))) | |
d1be4ec2 | 580 | |
f4ce6150 | 581 | ;; FIXME move to the test/ directory? |
537ab246 BG |
582 | (defun test-rmail-mime-handler () |
583 | "Test of a mail using no MIME parts at all." | |
584 | (let ((mail "To: alex@gnu.org | |
585 | Content-Type: text/plain; charset=koi8-r | |
586 | Content-Transfer-Encoding: 8bit | |
587 | MIME-Version: 1.0 | |
588 | ||
589 | \372\304\322\301\327\323\324\327\325\312\324\305\41")) | |
590 | (switch-to-buffer (get-buffer-create "*test*")) | |
591 | (erase-buffer) | |
592 | (set-buffer-multibyte nil) | |
593 | (insert mail) | |
594 | (rmail-mime-show t) | |
595 | (set-buffer-multibyte t))) | |
596 | ||
e8652dd9 | 597 | |
186f7f0b KH |
598 | (defun rmail-mime-insert-image (entity) |
599 | "Decode and insert the image body of MIME-entity ENTITY." | |
600 | (let* ((content-type (car (rmail-mime-entity-type entity))) | |
601 | (bulk-data (aref (rmail-mime-entity-tagline entity) 1)) | |
602 | (body (rmail-mime-entity-body entity)) | |
603 | data) | |
604 | (if (stringp (aref body 0)) | |
605 | (setq data (aref body 0)) | |
606 | (let ((rmail-mime-mbox-buffer rmail-view-buffer) | |
607 | (transfer-encoding (rmail-mime-entity-transfer-encoding entity))) | |
d1be4ec2 KH |
608 | (with-temp-buffer |
609 | (set-buffer-multibyte nil) | |
610 | (setq buffer-undo-list t) | |
186f7f0b KH |
611 | (insert-buffer-substring rmail-mime-mbox-buffer |
612 | (aref body 0) (aref body 1)) | |
d1be4ec2 KH |
613 | (cond ((string= transfer-encoding "base64") |
614 | (ignore-errors (base64-decode-region (point-min) (point-max)))) | |
615 | ((string= transfer-encoding "quoted-printable") | |
616 | (quoted-printable-decode-region (point-min) (point-max)))) | |
617 | (setq data | |
618 | (buffer-substring-no-properties (point-min) (point-max)))))) | |
186f7f0b KH |
619 | (insert-image (create-image data (cdr bulk-data) t)) |
620 | (insert "\n"))) | |
e8652dd9 | 621 | |
e7ca0062 KH |
622 | (defun rmail-mime-toggle-button (button) |
623 | "Hide or show the body of the MIME-entity associated with BUTTON." | |
186f7f0b | 624 | (save-excursion |
e7ca0062 | 625 | (goto-char (button-start button)) |
186f7f0b | 626 | (rmail-mime-toggle-hidden))) |
e8652dd9 | 627 | |
e7ca0062 | 628 | (define-button-type 'rmail-mime-toggle 'action 'rmail-mime-toggle-button) |
e8652dd9 GM |
629 | |
630 | ||
537ab246 BG |
631 | (defun rmail-mime-bulk-handler (content-type |
632 | content-disposition | |
e8652dd9 | 633 | content-transfer-encoding) |
2e9075d3 | 634 | "Handle the current buffer as an attachment to download. |
e8652dd9 GM |
635 | For images that Emacs is capable of displaying, the behavior |
636 | depends upon the value of `rmail-mime-show-images'." | |
d1be4ec2 KH |
637 | (rmail-mime-insert-bulk |
638 | (rmail-mime-entity content-type content-disposition content-transfer-encoding | |
186f7f0b KH |
639 | (vector (vector nil nil nil) (vector nil t nil)) |
640 | (vector nil nil nil) (vector "" (cons nil nil) t) | |
641 | (vector nil nil nil) nil 'rmail-mime-insert-bulk))) | |
642 | ||
643 | (defun rmail-mime-set-bulk-data (entity) | |
644 | "Setup the information about the attachment object for MIME-entity ENTITY. | |
645 | The value is non-nil if and only if the attachment object should be shown | |
646 | directly." | |
647 | (let ((content-type (car (rmail-mime-entity-type entity))) | |
648 | (size (cdr (assq 'size (cdr (rmail-mime-entity-disposition entity))))) | |
649 | (bulk-data (aref (rmail-mime-entity-tagline entity) 1)) | |
650 | (body (rmail-mime-entity-body entity)) | |
e7ca0062 | 651 | type to-show) |
186f7f0b KH |
652 | (cond (size |
653 | (setq size (string-to-number size))) | |
654 | ((stringp (aref body 0)) | |
655 | (setq size (length (aref body 0)))) | |
656 | (t | |
657 | ;; Rough estimation of the size. | |
658 | (let ((encoding (rmail-mime-entity-transfer-encoding entity))) | |
659 | (setq size (- (aref body 1) (aref body 0))) | |
660 | (cond ((string= encoding "base64") | |
661 | (setq size (/ (* size 3) 4))) | |
662 | ((string= encoding "quoted-printable") | |
663 | (setq size (/ (* size 7) 3))))))) | |
664 | ||
665 | (cond | |
666 | ((string-match "text/" content-type) | |
667 | (setq type 'text)) | |
668 | ((string-match "image/\\(.*\\)" content-type) | |
669 | (setq type (image-type-from-file-name | |
670 | (concat "." (match-string 1 content-type)))) | |
671 | (if (and (memq type image-types) | |
672 | (image-type-available-p type)) | |
673 | (if (and rmail-mime-show-images | |
674 | (not (eq rmail-mime-show-images 'button)) | |
675 | (or (not (numberp rmail-mime-show-images)) | |
676 | (< size rmail-mime-show-images))) | |
677 | (setq to-show t)) | |
678 | (setq type nil)))) | |
679 | (setcar bulk-data size) | |
680 | (setcdr bulk-data type) | |
681 | to-show)) | |
d1be4ec2 KH |
682 | |
683 | (defun rmail-mime-insert-bulk (entity) | |
186f7f0b | 684 | "Presentation handler for an attachment MIME entity." |
d1be4ec2 KH |
685 | (let* ((content-type (rmail-mime-entity-type entity)) |
686 | (content-disposition (rmail-mime-entity-disposition entity)) | |
186f7f0b KH |
687 | (current (aref (rmail-mime-entity-display entity) 0)) |
688 | (new (aref (rmail-mime-entity-display entity) 1)) | |
689 | (header (rmail-mime-entity-header entity)) | |
690 | (tagline (rmail-mime-entity-tagline entity)) | |
691 | (bulk-data (aref tagline 1)) | |
d1be4ec2 | 692 | (body (rmail-mime-entity-body entity)) |
e7ca0062 | 693 | ;; Find the default directory for this media type. |
d1be4ec2 | 694 | (directory (catch 'directory |
537ab246 BG |
695 | (dolist (entry rmail-mime-attachment-dirs-alist) |
696 | (when (string-match (car entry) (car content-type)) | |
697 | (dolist (dir (cdr entry)) | |
698 | (when (file-directory-p dir) | |
699 | (throw 'directory dir))))))) | |
700 | (filename (or (cdr (assq 'name (cdr content-type))) | |
701 | (cdr (assq 'filename (cdr content-disposition))) | |
702 | "noname")) | |
69220882 | 703 | (units '(B kB MB GB)) |
186f7f0b KH |
704 | (segment (rmail-mime-entity-segment (point) entity)) |
705 | beg data size) | |
706 | ||
707 | (if (integerp (aref body 0)) | |
d1be4ec2 | 708 | (setq data entity |
186f7f0b KH |
709 | size (car bulk-data)) |
710 | (if (stringp (aref body 0)) | |
711 | (setq data (aref body 0)) | |
712 | (setq data (string-as-unibyte (buffer-string))) | |
713 | (aset body 0 data) | |
714 | (rmail-mime-set-bulk-data entity) | |
715 | (delete-region (point-min) (point-max))) | |
716 | (setq size (length data))) | |
d1be4ec2 | 717 | (while (and (> size 1024.0) ; cribbed from gnus-agent-expire-done-message |
69220882 GM |
718 | (cdr units)) |
719 | (setq size (/ size 1024.0) | |
720 | units (cdr units))) | |
186f7f0b KH |
721 | |
722 | (setq beg (point)) | |
723 | ||
724 | ;; header | |
725 | (if (eq (aref current 0) (aref new 0)) | |
726 | (goto-char (aref segment 2)) | |
727 | (if (aref current 0) | |
728 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
729 | (if (aref new 0) | |
730 | (rmail-mime-insert-header header))) | |
731 | ||
732 | ;; tagline | |
733 | (if (eq (aref current 1) (aref new 1)) | |
e7ca0062 KH |
734 | (if (or (not (aref current 1)) |
735 | (eq (aref current 2) (aref new 2))) | |
736 | (forward-char (- (aref segment 3) (aref segment 2))) | |
737 | (rmail-mime-update-tagline entity)) | |
186f7f0b KH |
738 | (if (aref current 1) |
739 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
740 | (if (aref new 1) | |
741 | (rmail-mime-insert-tagline | |
742 | entity | |
e7ca0062 | 743 | " Save:" |
186f7f0b KH |
744 | (list filename |
745 | :type 'rmail-mime-save | |
746 | 'help-echo "mouse-2, RET: Save attachment" | |
747 | 'filename filename | |
748 | 'directory (file-name-as-directory directory) | |
749 | 'data data) | |
750 | (format " (%.0f%s)" size (car units)) | |
e7ca0062 KH |
751 | ;; We don't need this button because the "type" string of a |
752 | ;; tagline is the button to do this. | |
753 | ;; (if (cdr bulk-data) | |
754 | ;; " ") | |
755 | ;; (if (cdr bulk-data) | |
756 | ;; (list "Toggle show/hide" | |
757 | ;; :type 'rmail-mime-image | |
758 | ;; 'help-echo "mouse-2, RET: Toggle show/hide" | |
759 | ;; 'image-type (cdr bulk-data) | |
760 | ;; 'image-data data)) | |
761 | ))) | |
186f7f0b KH |
762 | ;; body |
763 | (if (eq (aref current 2) (aref new 2)) | |
764 | (forward-char (- (aref segment 4) (aref segment 3))) | |
765 | (if (aref current 2) | |
766 | (delete-char (- (aref segment 4) (aref segment 3)))) | |
767 | (if (aref new 2) | |
768 | (cond ((eq (cdr bulk-data) 'text) | |
769 | (rmail-mime-insert-decoded-text entity)) | |
770 | ((cdr bulk-data) | |
362b9d48 GM |
771 | (rmail-mime-insert-image entity)) |
772 | (t | |
773 | ;; As we don't know how to display the body, just | |
774 | ;; insert it as a text. | |
775 | (rmail-mime-insert-decoded-text entity))))) | |
186f7f0b | 776 | (put-text-property beg (point) 'rmail-mime-entity entity))) |
537ab246 BG |
777 | |
778 | (defun test-rmail-mime-bulk-handler () | |
779 | "Test of a mail used as an example in RFC 2183." | |
780 | (let ((mail "Content-Type: image/jpeg | |
781 | Content-Disposition: attachment; filename=genome.jpeg; | |
782 | modification-date=\"Wed, 12 Feb 1997 16:29:51 -0500\"; | |
783 | Content-Description: a complete map of the human genome | |
784 | Content-Transfer-Encoding: base64 | |
785 | ||
786 | iVBORw0KGgoAAAANSUhEUgAAADAAAAAwCAMAAABg3Am1AAAABGdBTUEAALGPC/xhBQAAAAZQ | |
787 | TFRF////AAAAVcLTfgAAAPZJREFUeNq9ldsOwzAIQ+3//+l1WlvA5ZLsoUiTto4TB+ISoAjy | |
788 | +ITfRBfcAmgRFFeAm+J6uhdKdFhFWUgDkFsK0oUp/9G2//Kj7Jx+5tSKOdBscgUYiKHRS/me | |
789 | WATQdRUvAK0Bnmshmtn79PpaLBbbOZkjKvRnjRZoRswOkG1wFchKew2g9wXVJVZL/m4+B+vv | |
790 | 9AxQQR2Q33SgAYJzzVACdAWjAfRYzYFO9n6SLnydtQHSMxYDMAKqZ/8FS/lTK+zuq3CtK64L | |
791 | UDwbgUEAUmk2Zyg101d6PhCDySgAvTvDgKiuOrc4dLxUb7UMnhGIexyI+d6U+ABuNAP4Simx | |
792 | lgAAAABJRU5ErkJggg== | |
793 | ")) | |
794 | (switch-to-buffer (get-buffer-create "*test*")) | |
795 | (erase-buffer) | |
796 | (insert mail) | |
797 | (rmail-mime-show))) | |
798 | ||
799 | (defun rmail-mime-multipart-handler (content-type | |
800 | content-disposition | |
801 | content-transfer-encoding) | |
802 | "Handle the current buffer as a multipart MIME body. | |
803 | The current buffer should be narrowed to the body. CONTENT-TYPE, | |
804 | CONTENT-DISPOSITION, and CONTENT-TRANSFER-ENCODING are the values | |
805 | of the respective parsed headers. See `rmail-mime-handle' for their | |
806 | format." | |
d1be4ec2 | 807 | (rmail-mime-process-multipart |
186f7f0b KH |
808 | content-type content-disposition content-transfer-encoding nil) |
809 | t) | |
d1be4ec2 KH |
810 | |
811 | (defun rmail-mime-process-multipart (content-type | |
812 | content-disposition | |
813 | content-transfer-encoding | |
186f7f0b | 814 | parse-tag) |
d1be4ec2 KH |
815 | "Process the current buffer as a multipart MIME body. |
816 | ||
186f7f0b KH |
817 | If PARSE-TAG is nil, modify the current buffer directly for |
818 | showing the MIME body and return nil. | |
d1be4ec2 | 819 | |
186f7f0b KH |
820 | Otherwise, PARSE-TAG is a string indicating the depth and index |
821 | number of the entity. In this case, parse the current buffer and | |
822 | return a list of MIME-entity objects. | |
d1be4ec2 KH |
823 | |
824 | The other arguments are the same as `rmail-mime-multipart-handler'." | |
537ab246 BG |
825 | ;; Some MUAs start boundaries with "--", while it should start |
826 | ;; with "CRLF--", as defined by RFC 2046: | |
827 | ;; The boundary delimiter MUST occur at the beginning of a line, | |
828 | ;; i.e., following a CRLF, and the initial CRLF is considered to | |
829 | ;; be attached to the boundary delimiter line rather than part | |
830 | ;; of the preceding part. | |
831 | ;; We currently don't handle that. | |
832 | (let ((boundary (cdr (assq 'boundary content-type))) | |
186f7f0b KH |
833 | (subtype (cadr (split-string (car content-type) "/"))) |
834 | (index 0) | |
aa8a705c | 835 | beg end next entities truncated) |
537ab246 BG |
836 | (unless boundary |
837 | (rmail-mm-get-boundary-error-message | |
838 | "No boundary defined" content-type content-disposition | |
839 | content-transfer-encoding)) | |
840 | (setq boundary (concat "\n--" boundary)) | |
841 | ;; Hide the body before the first bodypart | |
842 | (goto-char (point-min)) | |
843 | (when (and (search-forward boundary nil t) | |
844 | (looking-at "[ \t]*\n")) | |
186f7f0b | 845 | (if parse-tag |
d1be4ec2 KH |
846 | (narrow-to-region (match-end 0) (point-max)) |
847 | (delete-region (point-min) (match-end 0)))) | |
186f7f0b KH |
848 | |
849 | ;; Change content-type to the proper default one for the children. | |
850 | (cond ((string-match "mixed" subtype) | |
851 | (setq content-type '("text/plain"))) | |
852 | ((string-match "digest" subtype) | |
362b9d48 GM |
853 | (setq content-type '("message/rfc822"))) |
854 | (t | |
855 | (setq content-type nil))) | |
186f7f0b | 856 | |
537ab246 BG |
857 | ;; Loop over all body parts, where beg points at the beginning of |
858 | ;; the part and end points at the end of the part. next points at | |
186f7f0b KH |
859 | ;; the beginning of the next part. The current point is just |
860 | ;; after the boundary tag. | |
537ab246 | 861 | (setq beg (point-min)) |
d31fd9ac RS |
862 | |
863 | (while (or (and (search-forward boundary nil t) | |
aa8a705c | 864 | (setq truncated nil end (match-beginning 0))) |
d31fd9ac RS |
865 | ;; If the boundary does not appear at all, |
866 | ;; the message was truncated. | |
867 | ;; Handle the rest of the truncated message | |
868 | ;; (if it isn't empty) by pretending that the boundary | |
869 | ;; appears at the end of the message. | |
870 | (and (save-excursion | |
871 | (skip-chars-forward "\n") | |
872 | (> (point-max) (point))) | |
aa8a705c | 873 | (setq truncated t end (point-max)))) |
537ab246 BG |
874 | ;; If this is the last boundary according to RFC 2046, hide the |
875 | ;; epilogue, else hide the boundary only. Use a marker for | |
876 | ;; `next' because `rmail-mime-show' may change the buffer. | |
ffa1fed6 | 877 | (cond ((looking-at "--[ \t]*$") |
537ab246 BG |
878 | (setq next (point-max-marker))) |
879 | ((looking-at "[ \t]*\n") | |
ffa1fed6 | 880 | (setq next (copy-marker (match-end 0) t))) |
aa8a705c | 881 | (truncated |
d31fd9ac RS |
882 | ;; We're handling what's left of a truncated message. |
883 | (setq next (point-max-marker))) | |
537ab246 | 884 | (t |
c1449bff KH |
885 | ;; The original code signalled an error as below, but |
886 | ;; this line may be a boundary of nested multipart. So, | |
887 | ;; we just set `next' to nil to skip this line | |
888 | ;; (rmail-mm-get-boundary-error-message | |
889 | ;; "Malformed boundary" content-type content-disposition | |
890 | ;; content-transfer-encoding) | |
891 | (setq next nil))) | |
892 | ||
893 | (when next | |
894 | (setq index (1+ index)) | |
895 | ;; Handle the part. | |
896 | (if parse-tag | |
897 | (save-restriction | |
898 | (narrow-to-region beg end) | |
899 | (let ((child (rmail-mime-process | |
900 | nil (format "%s/%d" parse-tag index) | |
901 | content-type content-disposition))) | |
902 | ;; Display a tagline. | |
903 | (aset (aref (rmail-mime-entity-display child) 1) 1 | |
904 | (aset (rmail-mime-entity-tagline child) 2 t)) | |
aa8a705c | 905 | (rmail-mime-entity-set-truncated child truncated) |
c1449bff KH |
906 | (push child entities))) |
907 | ||
908 | (delete-region end next) | |
d1be4ec2 KH |
909 | (save-restriction |
910 | (narrow-to-region beg end) | |
c1449bff KH |
911 | (rmail-mime-show))) |
912 | (goto-char (setq beg next)))) | |
186f7f0b KH |
913 | |
914 | (when parse-tag | |
915 | (setq entities (nreverse entities)) | |
916 | (if (string-match "alternative" subtype) | |
917 | ;; Find the best entity to show, and hide all the others. | |
918 | (let (best second) | |
919 | (dolist (child entities) | |
920 | (if (string= (or (car (rmail-mime-entity-disposition child)) | |
921 | (car content-disposition)) | |
922 | "inline") | |
923 | (if (string-match "text/plain" | |
924 | (car (rmail-mime-entity-type child))) | |
925 | (setq best child) | |
926 | (if (string-match "text/.*" | |
927 | (car (rmail-mime-entity-type child))) | |
928 | (setq second child))))) | |
929 | (or best (not second) (setq best second)) | |
930 | (dolist (child entities) | |
e7ca0062 KH |
931 | (unless (eq best child) |
932 | (aset (rmail-mime-entity-body child) 2 nil) | |
933 | (rmail-mime-hidden-mode child))))) | |
186f7f0b | 934 | entities))) |
537ab246 BG |
935 | |
936 | (defun test-rmail-mime-multipart-handler () | |
937 | "Test of a mail used as an example in RFC 2046." | |
938 | (let ((mail "From: Nathaniel Borenstein <nsb@bellcore.com> | |
939 | To: Ned Freed <ned@innosoft.com> | |
940 | Date: Sun, 21 Mar 1993 23:56:48 -0800 (PST) | |
941 | Subject: Sample message | |
942 | MIME-Version: 1.0 | |
943 | Content-type: multipart/mixed; boundary=\"simple boundary\" | |
944 | ||
945 | This is the preamble. It is to be ignored, though it | |
946 | is a handy place for composition agents to include an | |
947 | explanatory note to non-MIME conformant readers. | |
948 | ||
949 | --simple boundary | |
950 | ||
951 | This is implicitly typed plain US-ASCII text. | |
952 | It does NOT end with a linebreak. | |
953 | --simple boundary | |
954 | Content-type: text/plain; charset=us-ascii | |
955 | ||
956 | This is explicitly typed plain US-ASCII text. | |
957 | It DOES end with a linebreak. | |
958 | ||
959 | --simple boundary-- | |
960 | ||
961 | This is the epilogue. It is also to be ignored.")) | |
962 | (switch-to-buffer (get-buffer-create "*test*")) | |
963 | (erase-buffer) | |
964 | (insert mail) | |
965 | (rmail-mime-show t))) | |
966 | ||
186f7f0b KH |
967 | (defun rmail-mime-insert-multipart (entity) |
968 | "Presentation handler for a multipart MIME entity." | |
969 | (let ((current (aref (rmail-mime-entity-display entity) 0)) | |
970 | (new (aref (rmail-mime-entity-display entity) 1)) | |
971 | (header (rmail-mime-entity-header entity)) | |
972 | (tagline (rmail-mime-entity-tagline entity)) | |
973 | (body (rmail-mime-entity-body entity)) | |
974 | (beg (point)) | |
975 | (segment (rmail-mime-entity-segment (point) entity))) | |
976 | ;; header | |
977 | (if (eq (aref current 0) (aref new 0)) | |
978 | (goto-char (aref segment 2)) | |
979 | (if (aref current 0) | |
980 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
981 | (if (aref new 0) | |
982 | (rmail-mime-insert-header header))) | |
983 | ;; tagline | |
984 | (if (eq (aref current 1) (aref new 1)) | |
e7ca0062 KH |
985 | (if (or (not (aref current 1)) |
986 | (eq (aref current 2) (aref new 2))) | |
987 | (forward-char (- (aref segment 3) (aref segment 2))) | |
988 | (rmail-mime-update-tagline entity)) | |
186f7f0b KH |
989 | (if (aref current 1) |
990 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
991 | (if (aref new 1) | |
992 | (rmail-mime-insert-tagline entity))) | |
993 | ||
994 | (put-text-property beg (point) 'rmail-mime-entity entity) | |
e7ca0062 | 995 | |
186f7f0b KH |
996 | ;; body |
997 | (if (eq (aref current 2) (aref new 2)) | |
998 | (forward-char (- (aref segment 4) (aref segment 3))) | |
e7ca0062 KH |
999 | (dolist (child (rmail-mime-entity-children entity)) |
1000 | (rmail-mime-insert child))) | |
1001 | entity)) | |
186f7f0b | 1002 | |
537ab246 BG |
1003 | ;;; Main code |
1004 | ||
1005 | (defun rmail-mime-handle (content-type | |
1006 | content-disposition | |
1007 | content-transfer-encoding) | |
1008 | "Handle the current buffer as a MIME part. | |
1009 | The current buffer should be narrowed to the respective body, and | |
1010 | point should be at the beginning of the body. | |
1011 | ||
1012 | CONTENT-TYPE, CONTENT-DISPOSITION, and CONTENT-TRANSFER-ENCODING | |
0c9ff2c5 GM |
1013 | are the values of the respective parsed headers. The latter should |
1014 | be downcased. The parsed headers for CONTENT-TYPE and CONTENT-DISPOSITION | |
1015 | have the form | |
537ab246 BG |
1016 | |
1017 | \(VALUE . ALIST) | |
1018 | ||
1019 | In other words: | |
1020 | ||
1021 | \(VALUE (ATTRIBUTE . VALUE) (ATTRIBUTE . VALUE) ...) | |
1022 | ||
1023 | VALUE is a string and ATTRIBUTE is a symbol. | |
1024 | ||
1025 | Consider the following header, for example: | |
1026 | ||
1027 | Content-Type: multipart/mixed; | |
1028 | boundary=\"----=_NextPart_000_0104_01C617E4.BDEC4C40\" | |
1029 | ||
1030 | The parsed header value: | |
1031 | ||
1032 | \(\"multipart/mixed\" | |
1033 | \(\"boundary\" . \"----=_NextPart_000_0104_01C617E4.BDEC4C40\"))" | |
1034 | ;; Handle the content transfer encodings we know. Unknown transfer | |
1035 | ;; encodings will be passed on to the various handlers. | |
1036 | (cond ((string= content-transfer-encoding "base64") | |
1037 | (when (ignore-errors | |
1038 | (base64-decode-region (point) (point-max))) | |
1039 | (setq content-transfer-encoding nil))) | |
1040 | ((string= content-transfer-encoding "quoted-printable") | |
1041 | (quoted-printable-decode-region (point) (point-max)) | |
1042 | (setq content-transfer-encoding nil)) | |
1043 | ((string= content-transfer-encoding "8bit") | |
1044 | ;; FIXME: Is this the correct way? | |
c893016b SM |
1045 | ;; No, of course not, it just means there's no decoding to do. |
1046 | ;; (set-buffer-multibyte nil) | |
1047 | (setq content-transfer-encoding nil) | |
1048 | )) | |
537ab246 BG |
1049 | ;; Inline stuff requires work. Attachments are handled by the bulk |
1050 | ;; handler. | |
1051 | (if (string= "inline" (car content-disposition)) | |
1052 | (let ((stop nil)) | |
1053 | (dolist (entry rmail-mime-media-type-handlers-alist) | |
1054 | (when (and (string-match (car entry) (car content-type)) (not stop)) | |
1055 | (progn | |
1056 | (setq stop (funcall (cadr entry) content-type | |
1057 | content-disposition | |
1058 | content-transfer-encoding)))))) | |
1059 | ;; Everything else is an attachment. | |
1060 | (rmail-mime-bulk-handler content-type | |
1061 | content-disposition | |
e7ca0062 KH |
1062 | content-transfer-encoding)) |
1063 | (save-restriction | |
1064 | (widen) | |
1065 | (let ((entity (get-text-property (1- (point)) 'rmail-mime-entity)) | |
1066 | current new) | |
1067 | (when entity | |
1068 | (setq current (aref (rmail-mime-entity-display entity) 0) | |
1069 | new (aref (rmail-mime-entity-display entity) 1)) | |
1070 | (dotimes (i 3) | |
1071 | (aset current i (aref new i))))))) | |
537ab246 BG |
1072 | |
1073 | (defun rmail-mime-show (&optional show-headers) | |
1074 | "Handle the current buffer as a MIME message. | |
1075 | If SHOW-HEADERS is non-nil, then the headers of the current part | |
1076 | will shown as usual for a MIME message. The headers are also | |
1077 | shown for the content type message/rfc822. This function will be | |
1078 | called recursively if multiple parts are available. | |
1079 | ||
1080 | The current buffer must contain a single message. It will be | |
1081 | modified." | |
d1be4ec2 KH |
1082 | (rmail-mime-process show-headers nil)) |
1083 | ||
186f7f0b KH |
1084 | (defun rmail-mime-process (show-headers parse-tag &optional |
1085 | default-content-type | |
1086 | default-content-disposition) | |
537ab246 BG |
1087 | (let ((end (point-min)) |
1088 | content-type | |
1089 | content-transfer-encoding | |
1090 | content-disposition) | |
1091 | ;; `point-min' returns the beginning and `end' points at the end | |
1092 | ;; of the headers. | |
1093 | (goto-char (point-min)) | |
1094 | ;; If we're showing a part without headers, then it will start | |
1095 | ;; with a newline. | |
1096 | (if (eq (char-after) ?\n) | |
1097 | (setq end (1+ (point))) | |
1098 | (when (search-forward "\n\n" nil t) | |
1099 | (setq end (match-end 0)) | |
1100 | (save-restriction | |
1101 | (narrow-to-region (point-min) end) | |
1102 | ;; FIXME: Default disposition of the multipart entities should | |
1103 | ;; be inherited. | |
1104 | (setq content-type | |
1105 | (mail-fetch-field "Content-Type") | |
1106 | content-transfer-encoding | |
1107 | (mail-fetch-field "Content-Transfer-Encoding") | |
1108 | content-disposition | |
1109 | (mail-fetch-field "Content-Disposition"))))) | |
0c9ff2c5 GM |
1110 | ;; Per RFC 2045, C-T-E is case insensitive (bug#5070), but the others |
1111 | ;; are not completely so. Hopefully mail-header-parse-* DTRT. | |
1112 | (if content-transfer-encoding | |
1113 | (setq content-transfer-encoding (downcase content-transfer-encoding))) | |
1114 | (setq content-type | |
1115 | (if content-type | |
e7ca0062 KH |
1116 | (or (mail-header-parse-content-type content-type) |
1117 | '("text/plain")) | |
186f7f0b | 1118 | (or default-content-type '("text/plain")))) |
537ab246 BG |
1119 | (setq content-disposition |
1120 | (if content-disposition | |
1121 | (mail-header-parse-content-disposition content-disposition) | |
1122 | ;; If none specified, we are free to choose what we deem | |
1123 | ;; suitable according to RFC 2183. We like inline. | |
186f7f0b | 1124 | (or default-content-disposition '("inline")))) |
537ab246 BG |
1125 | ;; Unrecognized disposition types are to be treated like |
1126 | ;; attachment according to RFC 2183. | |
1127 | (unless (member (car content-disposition) '("inline" "attachment")) | |
1128 | (setq content-disposition '("attachment"))) | |
d1be4ec2 | 1129 | |
186f7f0b KH |
1130 | (if parse-tag |
1131 | (let* ((is-inline (string= (car content-disposition) "inline")) | |
1132 | (header (vector (point-min) end nil)) | |
1133 | (tagline (vector parse-tag (cons nil nil) t)) | |
1134 | (body (vector end (point-max) is-inline)) | |
1135 | (new (vector (aref header 2) (aref tagline 2) (aref body 2))) | |
1136 | children handler entity) | |
1137 | (cond ((string-match "multipart/.*" (car content-type)) | |
1138 | (save-restriction | |
1139 | (narrow-to-region (1- end) (point-max)) | |
1140 | (setq children (rmail-mime-process-multipart | |
1141 | content-type | |
1142 | content-disposition | |
1143 | content-transfer-encoding | |
1144 | parse-tag) | |
1145 | handler 'rmail-mime-insert-multipart))) | |
1146 | ((string-match "message/rfc822" (car content-type)) | |
1147 | (save-restriction | |
d1be4ec2 | 1148 | (narrow-to-region end (point-max)) |
186f7f0b KH |
1149 | (let* ((msg (rmail-mime-process t parse-tag |
1150 | '("text/plain") '("inline"))) | |
1151 | (msg-new (aref (rmail-mime-entity-display msg) 1))) | |
1152 | ;; Show header of the child. | |
1153 | (aset msg-new 0 t) | |
1154 | (aset (rmail-mime-entity-header msg) 2 t) | |
1155 | ;; Hide tagline of the child. | |
1156 | (aset msg-new 1 nil) | |
1157 | (aset (rmail-mime-entity-tagline msg) 2 nil) | |
1158 | (setq children (list msg) | |
1159 | handler 'rmail-mime-insert-multipart)))) | |
1160 | ((and is-inline (string-match "text/" (car content-type))) | |
1161 | ;; Don't need a tagline. | |
1162 | (aset new 1 (aset tagline 2 nil)) | |
1163 | (setq handler 'rmail-mime-insert-text)) | |
1164 | (t | |
1165 | ;; Force hidden mode. | |
1166 | (aset new 1 (aset tagline 2 t)) | |
1167 | (aset new 2 (aset body 2 nil)) | |
1168 | (setq handler 'rmail-mime-insert-bulk))) | |
1169 | (setq entity (rmail-mime-entity content-type | |
1170 | content-disposition | |
1171 | content-transfer-encoding | |
1172 | (vector (vector nil nil nil) new) | |
1173 | header tagline body children handler)) | |
1174 | (if (and (eq handler 'rmail-mime-insert-bulk) | |
1175 | (rmail-mime-set-bulk-data entity)) | |
1176 | ;; Show the body. | |
1177 | (aset new 2 (aset body 2 t))) | |
1178 | entity) | |
1179 | ||
d1be4ec2 | 1180 | ;; Hide headers and handle the part. |
186f7f0b | 1181 | (put-text-property (point-min) (point-max) 'rmail-mime-entity |
7c420169 | 1182 | (rmail-mime-entity |
186f7f0b KH |
1183 | content-type content-disposition |
1184 | content-transfer-encoding | |
1185 | (vector (vector 'raw nil 'raw) (vector 'raw nil 'raw)) | |
1186 | (vector nil nil 'raw) (vector "" (cons nil nil) nil) | |
1187 | (vector nil nil 'raw) nil nil)) | |
d1be4ec2 KH |
1188 | (save-restriction |
1189 | (cond ((string= (car content-type) "message/rfc822") | |
1190 | (narrow-to-region end (point-max))) | |
1191 | ((not show-headers) | |
1192 | (delete-region (point-min) end))) | |
1193 | (rmail-mime-handle content-type content-disposition | |
1194 | content-transfer-encoding))))) | |
1195 | ||
d1be4ec2 KH |
1196 | (defun rmail-mime-parse () |
1197 | "Parse the current Rmail message as a MIME message. | |
8258ae3f KH |
1198 | The value is a MIME-entiy object (see `rmail-mime-entity'). |
1199 | If an error occurs, return an error message string." | |
186f7f0b KH |
1200 | (let ((rmail-mime-mbox-buffer (if (rmail-buffers-swapped-p) |
1201 | rmail-view-buffer | |
1202 | (current-buffer)))) | |
8258ae3f | 1203 | (condition-case err |
186f7f0b KH |
1204 | (with-current-buffer rmail-mime-mbox-buffer |
1205 | (save-excursion | |
1206 | (goto-char (point-min)) | |
1207 | (let* ((entity (rmail-mime-process t "" | |
1208 | '("text/plain") '("inline"))) | |
1209 | (new (aref (rmail-mime-entity-display entity) 1))) | |
1210 | ;; Show header. | |
1211 | (aset new 0 (aset (rmail-mime-entity-header entity) 2 t)) | |
1212 | ;; Show tagline if and only if body is not shown. | |
1213 | (if (aref new 2) | |
1214 | (aset new 1 (aset (rmail-mime-entity-tagline entity) 2 nil)) | |
1215 | (aset new 1 (aset (rmail-mime-entity-tagline entity) 2 t))) | |
1216 | entity))) | |
8258ae3f | 1217 | (error (format "%s" err))))) |
186f7f0b KH |
1218 | |
1219 | (defun rmail-mime-insert (entity) | |
d1be4ec2 KH |
1220 | "Insert a MIME-entity ENTITY in the current buffer. |
1221 | ||
1222 | This function will be called recursively if multiple parts are | |
1223 | available." | |
186f7f0b KH |
1224 | (let ((current (aref (rmail-mime-entity-display entity) 0)) |
1225 | (new (aref (rmail-mime-entity-display entity) 1))) | |
1226 | (if (not (eq (aref new 0) 'raw)) | |
1227 | ;; Not a raw-mode. Each handler should handle it. | |
1228 | (funcall (rmail-mime-entity-handler entity) entity) | |
1229 | (let ((header (rmail-mime-entity-header entity)) | |
1230 | (tagline (rmail-mime-entity-tagline entity)) | |
1231 | (body (rmail-mime-entity-body entity)) | |
1232 | (beg (point)) | |
1233 | (segment (rmail-mime-entity-segment (point) entity))) | |
1234 | ;; header | |
1235 | (if (eq (aref current 0) (aref new 0)) | |
1236 | (goto-char (aref segment 2)) | |
1237 | (if (aref current 0) | |
1238 | (delete-char (- (aref segment 2) (aref segment 1)))) | |
1239 | (insert-buffer-substring rmail-mime-mbox-buffer | |
1240 | (aref header 0) (aref header 1))) | |
1241 | ;; tagline | |
1242 | (if (aref current 1) | |
1243 | (delete-char (- (aref segment 3) (aref segment 2)))) | |
1244 | ;; body | |
e7ca0062 KH |
1245 | (let ((children (rmail-mime-entity-children entity))) |
1246 | (if children | |
1247 | (progn | |
1248 | (put-text-property beg (point) 'rmail-mime-entity entity) | |
1249 | (dolist (child children) | |
1250 | (rmail-mime-insert child))) | |
1251 | (if (eq (aref current 2) (aref new 2)) | |
1252 | (forward-char (- (aref segment 4) (aref segment 3))) | |
1253 | (if (aref current 2) | |
1254 | (delete-char (- (aref segment 4) (aref segment 3)))) | |
1255 | (insert-buffer-substring rmail-mime-mbox-buffer | |
1256 | (aref body 0) (aref body 1)) | |
1257 | (or (bolp) (insert "\n"))) | |
1258 | (put-text-property beg (point) 'rmail-mime-entity entity))))) | |
186f7f0b KH |
1259 | (dotimes (i 3) |
1260 | (aset current i (aref new i))))) | |
537ab246 | 1261 | |
2e9075d3 GM |
1262 | (define-derived-mode rmail-mime-mode fundamental-mode "RMIME" |
1263 | "Major mode used in `rmail-mime' buffers." | |
1264 | (setq font-lock-defaults '(rmail-font-lock-keywords t t nil nil))) | |
1265 | ||
73422054 | 1266 | ;;;###autoload |
186f7f0b KH |
1267 | (defun rmail-mime (&optional arg) |
1268 | "Toggle displaying of a MIME message. | |
1269 | ||
1270 | The actualy behavior depends on the value of `rmail-enable-mime'. | |
1271 | ||
1272 | If `rmail-enable-mime' is t (default), this command change the | |
1273 | displaying of a MIME message between decoded presentation form | |
1274 | and raw data. | |
1275 | ||
1276 | With ARG, toggle the displaying of the current MIME entity only. | |
1277 | ||
1278 | If `rmail-enable-mime' is nil, this creates a temporary | |
1279 | \"*RMAIL*\" buffer holding a decoded copy of the message. Inline | |
1280 | content-types are handled according to | |
f4ce6150 GM |
1281 | `rmail-mime-media-type-handlers-alist'. By default, this |
1282 | displays text and multipart messages, and offers to download | |
1283 | attachments as specfied by `rmail-mime-attachment-dirs-alist'." | |
186f7f0b KH |
1284 | (interactive "P") |
1285 | (if rmail-enable-mime | |
e7ca0062 KH |
1286 | (with-current-buffer rmail-buffer |
1287 | (if (rmail-mime-message-p) | |
1288 | (let ((rmail-mime-mbox-buffer rmail-view-buffer) | |
1289 | (rmail-mime-view-buffer rmail-buffer) | |
1290 | (entity (get-text-property (point) 'rmail-mime-entity))) | |
1291 | (if arg | |
1292 | (if entity | |
1293 | (rmail-mime-toggle-raw entity)) | |
1294 | (goto-char (point-min)) | |
1295 | (rmail-mime-toggle-raw | |
1296 | (get-text-property (point) 'rmail-mime-entity)))) | |
1297 | (message "Not a MIME message"))) | |
186f7f0b KH |
1298 | (let* ((data (rmail-apply-in-message rmail-current-message 'buffer-string)) |
1299 | (buf (get-buffer-create "*RMAIL*")) | |
1300 | (rmail-mime-mbox-buffer rmail-view-buffer) | |
1301 | (rmail-mime-view-buffer buf)) | |
1302 | (set-buffer buf) | |
1303 | (setq buffer-undo-list t) | |
1304 | (let ((inhibit-read-only t)) | |
1305 | ;; Decoding the message in fundamental mode for speed, only | |
1306 | ;; switching to rmail-mime-mode at the end for display. Eg | |
1307 | ;; quoted-printable-decode-region gets very slow otherwise (Bug#4993). | |
1308 | (fundamental-mode) | |
1309 | (erase-buffer) | |
1310 | (insert data) | |
1311 | (rmail-mime-show t) | |
1312 | (rmail-mime-mode) | |
1313 | (set-buffer-modified-p nil)) | |
1314 | (view-buffer buf)))) | |
537ab246 BG |
1315 | |
1316 | (defun rmail-mm-get-boundary-error-message (message type disposition encoding) | |
1317 | "Return MESSAGE with more information on the main mime components." | |
1318 | (error "%s; type: %s; disposition: %s; encoding: %s" | |
1319 | message type disposition encoding)) | |
1320 | ||
d1be4ec2 | 1321 | (defun rmail-show-mime () |
7e116860 | 1322 | "Function to set in `rmail-show-mime-function' (which see)." |
186f7f0b KH |
1323 | (let ((entity (rmail-mime-parse)) |
1324 | (rmail-mime-mbox-buffer rmail-buffer) | |
1325 | (rmail-mime-view-buffer rmail-view-buffer) | |
1326 | (rmail-mime-coding-system nil)) | |
8258ae3f | 1327 | (if (vectorp entity) |
186f7f0b KH |
1328 | (with-current-buffer rmail-mime-view-buffer |
1329 | (erase-buffer) | |
1330 | (rmail-mime-insert entity) | |
1a6a03e4 KH |
1331 | (if (consp rmail-mime-coding-system) |
1332 | ;; Decoding is done by rfc2047-decode-region only for a | |
1333 | ;; header. But, as the used coding system may have been | |
1334 | ;; overriden by mm-charset-override-alist, we can't | |
1335 | ;; trust (car rmail-mime-coding-system). So, here we | |
1336 | ;; try the decoding again with mm-charset-override-alist | |
1337 | ;; bound to nil. | |
1338 | (let ((mm-charset-override-alist nil)) | |
1339 | (setq rmail-mime-coding-system | |
1340 | (rmail-mime-find-header-encoding | |
1341 | (rmail-mime-entity-header entity))))) | |
1342 | (set-buffer-file-coding-system | |
16bc9688 KH |
1343 | (if rmail-mime-coding-system |
1344 | (coding-system-base rmail-mime-coding-system) | |
1345 | 'undecided) | |
1346 | t t)) | |
8258ae3f KH |
1347 | ;; Decoding failed. ENTITY is an error message. Insert the |
1348 | ;; original message body as is, and show warning. | |
186f7f0b | 1349 | (let ((region (with-current-buffer rmail-mime-mbox-buffer |
7e116860 KH |
1350 | (goto-char (point-min)) |
1351 | (re-search-forward "^$" nil t) | |
1352 | (forward-line 1) | |
8258ae3f | 1353 | (vector (point-min) (point) (point-max))))) |
186f7f0b | 1354 | (with-current-buffer rmail-mime-view-buffer |
7e116860 KH |
1355 | (let ((inhibit-read-only t)) |
1356 | (erase-buffer) | |
8258ae3f | 1357 | (rmail-mime-insert-header region) |
186f7f0b | 1358 | (insert-buffer-substring rmail-mime-mbox-buffer |
8258ae3f | 1359 | (aref region 1) (aref region 2)))) |
186f7f0b | 1360 | (set-buffer-file-coding-system 'no-conversion t t) |
8258ae3f | 1361 | (message "MIME decoding failed: %s" entity))))) |
d1be4ec2 KH |
1362 | |
1363 | (setq rmail-show-mime-function 'rmail-show-mime) | |
1364 | ||
1365 | (defun rmail-insert-mime-forwarded-message (forward-buffer) | |
7a70468f RS |
1366 | "Insert the message in FORWARD-BUFFER as a forwarded message. |
1367 | This is the usual value of `rmail-insert-mime-forwarded-message-function'." | |
1368 | (let ((message-buffer | |
1369 | (with-current-buffer forward-buffer | |
1370 | (if rmail-buffer-swapped | |
1371 | forward-buffer | |
1372 | rmail-view-buffer)))) | |
d1be4ec2 KH |
1373 | (save-restriction |
1374 | (narrow-to-region (point) (point)) | |
7a70468f | 1375 | (message-forward-make-body-mime message-buffer)))) |
d1be4ec2 KH |
1376 | |
1377 | (setq rmail-insert-mime-forwarded-message-function | |
1378 | 'rmail-insert-mime-forwarded-message) | |
1379 | ||
1380 | (defun rmail-insert-mime-resent-message (forward-buffer) | |
7e116860 | 1381 | "Function to set in `rmail-insert-mime-resent-message-function' (which see)." |
d1be4ec2 KH |
1382 | (insert-buffer-substring |
1383 | (with-current-buffer forward-buffer rmail-view-buffer)) | |
1384 | (goto-char (point-min)) | |
1385 | (when (looking-at "From ") | |
1386 | (forward-line 1) | |
1387 | (delete-region (point-min) (point)))) | |
1388 | ||
1389 | (setq rmail-insert-mime-resent-message-function | |
1390 | 'rmail-insert-mime-resent-message) | |
1391 | ||
7e116860 KH |
1392 | (defun rmail-search-mime-message (msg regexp) |
1393 | "Function to set in `rmail-search-mime-message-function' (which see)." | |
1394 | (save-restriction | |
1395 | (narrow-to-region (rmail-msgbeg msg) (rmail-msgend msg)) | |
186f7f0b KH |
1396 | (let* ((rmail-mime-mbox-buffer (current-buffer)) |
1397 | (rmail-mime-view-buffer rmail-view-buffer) | |
1398 | (header-end (save-excursion | |
1399 | (re-search-forward "^$" nil 'move) (point))) | |
1400 | (body-end (point-max)) | |
1401 | (entity (rmail-mime-parse))) | |
7c420169 | 1402 | (or |
7e116860 KH |
1403 | ;; At first, just search the headers. |
1404 | (with-temp-buffer | |
186f7f0b | 1405 | (insert-buffer-substring rmail-mime-mbox-buffer nil header-end) |
7e116860 KH |
1406 | (rfc2047-decode-region (point-min) (point)) |
1407 | (goto-char (point-min)) | |
1408 | (re-search-forward regexp nil t)) | |
1409 | ;; Next, search the body. | |
1410 | (if (and entity | |
1411 | (let* ((content-type (rmail-mime-entity-type entity)) | |
1412 | (charset (cdr (assq 'charset (cdr content-type))))) | |
7c420169 | 1413 | (or (not (string-match "text/.*" (car content-type))) |
7e116860 KH |
1414 | (and charset |
1415 | (not (string= (downcase charset) "us-ascii")))))) | |
1416 | ;; Search the decoded MIME message. | |
1417 | (with-temp-buffer | |
186f7f0b | 1418 | (rmail-mime-insert entity) |
7e116860 KH |
1419 | (goto-char (point-min)) |
1420 | (re-search-forward regexp nil t)) | |
1421 | ;; Search the body without decoding. | |
1422 | (goto-char header-end) | |
1423 | (re-search-forward regexp nil t)))))) | |
1424 | ||
1425 | (setq rmail-search-mime-message-function 'rmail-search-mime-message) | |
1426 | ||
537ab246 BG |
1427 | (provide 'rmailmm) |
1428 | ||
35426db4 GM |
1429 | ;; Local Variables: |
1430 | ;; generated-autoload-file: "rmail.el" | |
1431 | ;; End: | |
1432 | ||
537ab246 | 1433 | ;;; rmailmm.el ends here |