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c113de23 GM |
1 | ;;; mml.el --- A package for parsing and validating MML documents |
2 | ;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc. | |
3 | ||
4 | ;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org> | |
8538cc2a | 5 | ;; Maintainer: bugs@gnus.org |
c113de23 GM |
6 | ;; This file is part of GNU Emacs. |
7 | ||
8 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
9 | ;; it under the terms of the GNU General Public License as published by | |
10 | ;; the Free Software Foundation; either version 2, or (at your option) | |
11 | ;; any later version. | |
12 | ||
13 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
14 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | ;; GNU General Public License for more details. | |
17 | ||
18 | ;; You should have received a copy of the GNU General Public License | |
19 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
20 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | ;; Boston, MA 02111-1307, USA. | |
22 | ||
23 | ;;; Commentary: | |
24 | ||
25 | ;;; Code: | |
26 | ||
27 | (require 'mm-util) | |
28 | (require 'mm-bodies) | |
29 | (require 'mm-encode) | |
30 | (require 'mm-decode) | |
160ff4e5 | 31 | (eval-when-compile (require 'cl)) |
c113de23 GM |
32 | |
33 | (eval-and-compile | |
34 | (autoload 'message-make-message-id "message") | |
35 | (autoload 'gnus-setup-posting-charset "gnus-msg") | |
36 | (autoload 'message-fetch-field "message") | |
37 | (autoload 'message-posting-charset "message")) | |
38 | ||
39 | (defvar mml-generate-multipart-alist nil | |
40 | "*Alist of multipart generation functions. | |
41 | Each entry has the form (NAME . FUNCTION), where | |
42 | NAME is a string containing the name of the part (without the | |
43 | leading \"/multipart/\"), | |
44 | FUNCTION is a Lisp function which is called to generate the part. | |
45 | ||
46 | The Lisp function has to supply the appropriate MIME headers and the | |
47 | contents of this part.") | |
48 | ||
49 | (defvar mml-syntax-table | |
50 | (let ((table (copy-syntax-table emacs-lisp-mode-syntax-table))) | |
51 | (modify-syntax-entry ?\\ "/" table) | |
52 | (modify-syntax-entry ?< "(" table) | |
53 | (modify-syntax-entry ?> ")" table) | |
54 | (modify-syntax-entry ?@ "w" table) | |
55 | (modify-syntax-entry ?/ "w" table) | |
56 | (modify-syntax-entry ?= " " table) | |
57 | (modify-syntax-entry ?* " " table) | |
58 | (modify-syntax-entry ?\; " " table) | |
59 | (modify-syntax-entry ?\' " " table) | |
60 | table)) | |
61 | ||
62 | (defvar mml-boundary-function 'mml-make-boundary | |
63 | "A function called to suggest a boundary. | |
64 | The function may be called several times, and should try to make a new | |
65 | suggestion each time. The function is called with one parameter, | |
66 | which is a number that says how many times the function has been | |
67 | called for this message.") | |
68 | ||
69 | (defvar mml-confirmation-set nil | |
70 | "A list of symbols, each of which disables some warning. | |
71 | `unknown-encoding': always send messages contain characters with | |
72 | unknown encoding; `use-ascii': always use ASCII for those characters | |
73 | with unknown encoding; `multipart': always send messages with more than | |
74 | one charsets.") | |
75 | ||
76 | (defvar mml-generate-mime-preprocess-function nil | |
77 | "A function called before generating a mime part. | |
78 | The function is called with one parameter, which is the part to be | |
79 | generated.") | |
80 | ||
81 | (defvar mml-generate-mime-postprocess-function nil | |
82 | "A function called after generating a mime part. | |
83 | The function is called with one parameter, which is the generated part.") | |
84 | ||
85 | (defvar mml-generate-default-type "text/plain") | |
86 | ||
87 | (defvar mml-buffer-list nil) | |
88 | ||
89 | (defun mml-generate-new-buffer (name) | |
90 | (let ((buf (generate-new-buffer name))) | |
91 | (push buf mml-buffer-list) | |
92 | buf)) | |
93 | ||
94 | (defun mml-destroy-buffers () | |
95 | (let (kill-buffer-hook) | |
96 | (mapcar 'kill-buffer mml-buffer-list) | |
97 | (setq mml-buffer-list nil))) | |
98 | ||
99 | (defun mml-parse () | |
100 | "Parse the current buffer as an MML document." | |
101 | (goto-char (point-min)) | |
102 | (let ((table (syntax-table))) | |
103 | (unwind-protect | |
104 | (progn | |
105 | (set-syntax-table mml-syntax-table) | |
106 | (mml-parse-1)) | |
107 | (set-syntax-table table)))) | |
108 | ||
109 | (defun mml-parse-1 () | |
110 | "Parse the current buffer as an MML document." | |
111 | (let (struct tag point contents charsets warn use-ascii no-markup-p raw) | |
112 | (while (and (not (eobp)) | |
113 | (not (looking-at "<#/multipart"))) | |
114 | (cond | |
115 | ((looking-at "<#multipart") | |
116 | (push (nconc (mml-read-tag) (mml-parse-1)) struct)) | |
117 | ((looking-at "<#external") | |
118 | (push (nconc (mml-read-tag) (list (cons 'contents (mml-read-part)))) | |
119 | struct)) | |
120 | (t | |
121 | (if (or (looking-at "<#part") (looking-at "<#mml")) | |
122 | (setq tag (mml-read-tag) | |
123 | no-markup-p nil | |
124 | warn nil) | |
125 | (setq tag (list 'part '(type . "text/plain")) | |
126 | no-markup-p t | |
127 | warn t)) | |
128 | (setq raw (cdr (assq 'raw tag)) | |
129 | point (point) | |
ce9401f3 | 130 | contents (mml-read-part (eq 'mml (car tag))) |
c113de23 GM |
131 | charsets (if raw nil |
132 | (mm-find-mime-charset-region point (point)))) | |
133 | (when (and (not raw) (memq nil charsets)) | |
134 | (if (or (memq 'unknown-encoding mml-confirmation-set) | |
135 | (y-or-n-p | |
8538cc2a | 136 | "Message contains characters with unknown encoding. Really send?")) |
c113de23 GM |
137 | (if (setq use-ascii |
138 | (or (memq 'use-ascii mml-confirmation-set) | |
139 | (y-or-n-p "Use ASCII as charset?"))) | |
140 | (setq charsets (delq nil charsets)) | |
141 | (setq warn nil)) | |
142 | (error "Edit your message to remove those characters"))) | |
143 | (if (or raw | |
144 | (eq 'mml (car tag)) | |
145 | (< (length charsets) 2)) | |
146 | (if (or (not no-markup-p) | |
147 | (string-match "[^ \t\r\n]" contents)) | |
148 | ;; Don't create blank parts. | |
149 | (push (nconc tag (list (cons 'contents contents))) | |
150 | struct)) | |
151 | (let ((nstruct (mml-parse-singlepart-with-multiple-charsets | |
152 | tag point (point) use-ascii))) | |
153 | (when (and warn | |
154 | (not (memq 'multipart mml-confirmation-set)) | |
155 | (not | |
156 | (y-or-n-p | |
157 | (format | |
158 | "Warning: Your message contains more than %d parts. Really send? " | |
159 | (length nstruct))))) | |
160 | (error "Edit your message to use only one charset")) | |
161 | (setq struct (nconc nstruct struct))))))) | |
162 | (unless (eobp) | |
163 | (forward-line 1)) | |
164 | (nreverse struct))) | |
165 | ||
166 | (defun mml-parse-singlepart-with-multiple-charsets | |
167 | (orig-tag beg end &optional use-ascii) | |
168 | (save-excursion | |
169 | (save-restriction | |
170 | (narrow-to-region beg end) | |
171 | (goto-char (point-min)) | |
172 | (let ((current (or (mm-mime-charset (mm-charset-after)) | |
173 | (and use-ascii 'us-ascii))) | |
174 | charset struct space newline paragraph) | |
175 | (while (not (eobp)) | |
176 | (setq charset (mm-mime-charset (mm-charset-after))) | |
177 | (cond | |
178 | ;; The charset remains the same. | |
179 | ((eq charset 'us-ascii)) | |
180 | ((or (and use-ascii (not charset)) | |
181 | (eq charset current)) | |
182 | (setq space nil | |
183 | newline nil | |
184 | paragraph nil)) | |
185 | ;; The initial charset was ascii. | |
186 | ((eq current 'us-ascii) | |
187 | (setq current charset | |
188 | space nil | |
189 | newline nil | |
190 | paragraph nil)) | |
191 | ;; We have a change in charsets. | |
192 | (t | |
193 | (push (append | |
194 | orig-tag | |
195 | (list (cons 'contents | |
196 | (buffer-substring-no-properties | |
197 | beg (or paragraph newline space (point)))))) | |
198 | struct) | |
199 | (setq beg (or paragraph newline space (point)) | |
200 | current charset | |
201 | space nil | |
202 | newline nil | |
203 | paragraph nil))) | |
204 | ;; Compute places where it might be nice to break the part. | |
205 | (cond | |
206 | ((memq (following-char) '(? ?\t)) | |
207 | (setq space (1+ (point)))) | |
208 | ((and (eq (following-char) ?\n) | |
209 | (not (bobp)) | |
210 | (eq (char-after (1- (point))) ?\n)) | |
211 | (setq paragraph (point))) | |
212 | ((eq (following-char) ?\n) | |
213 | (setq newline (1+ (point))))) | |
214 | (forward-char 1)) | |
215 | ;; Do the final part. | |
216 | (unless (= beg (point)) | |
217 | (push (append orig-tag | |
218 | (list (cons 'contents | |
219 | (buffer-substring-no-properties | |
220 | beg (point))))) | |
221 | struct)) | |
222 | struct)))) | |
223 | ||
224 | (defun mml-read-tag () | |
225 | "Read a tag and return the contents." | |
226 | (let (contents name elem val) | |
227 | (forward-char 2) | |
228 | (setq name (buffer-substring-no-properties | |
229 | (point) (progn (forward-sexp 1) (point)))) | |
230 | (skip-chars-forward " \t\n") | |
231 | (while (not (looking-at ">")) | |
232 | (setq elem (buffer-substring-no-properties | |
233 | (point) (progn (forward-sexp 1) (point)))) | |
234 | (skip-chars-forward "= \t\n") | |
235 | (setq val (buffer-substring-no-properties | |
236 | (point) (progn (forward-sexp 1) (point)))) | |
237 | (when (string-match "^\"\\(.*\\)\"$" val) | |
238 | (setq val (match-string 1 val))) | |
239 | (push (cons (intern elem) val) contents) | |
240 | (skip-chars-forward " \t\n")) | |
241 | (forward-char 1) | |
242 | (skip-chars-forward " \t\n") | |
243 | (cons (intern name) (nreverse contents)))) | |
244 | ||
245 | (defun mml-read-part (&optional mml) | |
246 | "Return the buffer up till the next part, multipart or closing part or multipart. | |
247 | If MML is non-nil, return the buffer up till the correspondent mml tag." | |
248 | (let ((beg (point)) (count 1)) | |
249 | ;; If the tag ended at the end of the line, we go to the next line. | |
250 | (when (looking-at "[ \t]*\n") | |
251 | (forward-line 1)) | |
252 | (if mml | |
253 | (progn | |
254 | (while (and (> count 0) (not (eobp))) | |
255 | (if (re-search-forward "<#\\(/\\)?mml." nil t) | |
256 | (setq count (+ count (if (match-beginning 1) -1 1))) | |
257 | (goto-char (point-max)))) | |
258 | (buffer-substring-no-properties beg (if (> count 0) | |
259 | (point) | |
260 | (match-beginning 0)))) | |
261 | (if (re-search-forward | |
262 | "<#\\(/\\)?\\(multipart\\|part\\|external\\|mml\\)." nil t) | |
263 | (prog1 | |
264 | (buffer-substring-no-properties beg (match-beginning 0)) | |
265 | (if (or (not (match-beginning 1)) | |
266 | (equal (match-string 2) "multipart")) | |
267 | (goto-char (match-beginning 0)) | |
268 | (when (looking-at "[ \t]*\n") | |
269 | (forward-line 1)))) | |
270 | (buffer-substring-no-properties beg (goto-char (point-max))))))) | |
271 | ||
272 | (defvar mml-boundary nil) | |
273 | (defvar mml-base-boundary "-=-=") | |
274 | (defvar mml-multipart-number 0) | |
275 | ||
276 | (defun mml-generate-mime () | |
277 | "Generate a MIME message based on the current MML document." | |
278 | (let ((cont (mml-parse)) | |
279 | (mml-multipart-number mml-multipart-number)) | |
280 | (if (not cont) | |
281 | nil | |
282 | (with-temp-buffer | |
283 | (if (and (consp (car cont)) | |
284 | (= (length cont) 1)) | |
285 | (mml-generate-mime-1 (car cont)) | |
286 | (mml-generate-mime-1 (nconc (list 'multipart '(type . "mixed")) | |
287 | cont))) | |
288 | (buffer-string))))) | |
289 | ||
290 | (defun mml-generate-mime-1 (cont) | |
291 | (save-restriction | |
292 | (narrow-to-region (point) (point)) | |
293 | (if mml-generate-mime-preprocess-function | |
294 | (funcall mml-generate-mime-preprocess-function cont)) | |
295 | (cond | |
296 | ((or (eq (car cont) 'part) (eq (car cont) 'mml)) | |
297 | (let ((raw (cdr (assq 'raw cont))) | |
298 | coded encoding charset filename type) | |
299 | (setq type (or (cdr (assq 'type cont)) "text/plain")) | |
300 | (if (and (not raw) | |
301 | (member (car (split-string type "/")) '("text" "message"))) | |
302 | (with-temp-buffer | |
303 | (cond | |
304 | ((cdr (assq 'buffer cont)) | |
305 | (insert-buffer-substring (cdr (assq 'buffer cont)))) | |
306 | ((and (setq filename (cdr (assq 'filename cont))) | |
307 | (not (equal (cdr (assq 'nofile cont)) "yes"))) | |
308 | (mm-insert-file-contents filename)) | |
309 | ((eq 'mml (car cont)) | |
310 | (insert (cdr (assq 'contents cont)))) | |
311 | (t | |
312 | (save-restriction | |
313 | (narrow-to-region (point) (point)) | |
314 | (insert (cdr (assq 'contents cont))) | |
315 | ;; Remove quotes from quoted tags. | |
316 | (goto-char (point-min)) | |
317 | (while (re-search-forward | |
318 | "<#!+/?\\(part\\|multipart\\|external\\|mml\\)" nil t) | |
319 | (delete-region (+ (match-beginning 0) 2) | |
320 | (+ (match-beginning 0) 3)))))) | |
321 | (cond | |
322 | ((eq (car cont) 'mml) | |
323 | (let ((mml-boundary (funcall mml-boundary-function | |
324 | (incf mml-multipart-number))) | |
325 | (mml-generate-default-type "text/plain")) | |
326 | (mml-to-mime)) | |
327 | (let ((mm-7bit-chars (concat mm-7bit-chars "\x1b"))) | |
328 | ;; ignore 0x1b, it is part of iso-2022-jp | |
329 | (setq encoding (mm-body-7-or-8)))) | |
330 | ((string= (car (split-string type "/")) "message") | |
331 | (let ((mm-7bit-chars (concat mm-7bit-chars "\x1b"))) | |
332 | ;; ignore 0x1b, it is part of iso-2022-jp | |
333 | (setq encoding (mm-body-7-or-8)))) | |
334 | (t | |
335 | (setq charset (mm-encode-body)) | |
336 | (setq encoding (mm-body-encoding | |
337 | charset (cdr (assq 'encoding cont)))))) | |
338 | (setq coded (buffer-string))) | |
339 | (mm-with-unibyte-buffer | |
340 | (cond | |
341 | ((cdr (assq 'buffer cont)) | |
342 | (insert-buffer-substring (cdr (assq 'buffer cont)))) | |
343 | ((and (setq filename (cdr (assq 'filename cont))) | |
344 | (not (equal (cdr (assq 'nofile cont)) "yes"))) | |
345 | (let ((coding-system-for-read mm-binary-coding-system)) | |
346 | (mm-insert-file-contents filename nil nil nil nil t))) | |
347 | (t | |
348 | (insert (cdr (assq 'contents cont))))) | |
349 | (setq encoding (mm-encode-buffer type) | |
350 | coded (buffer-string)))) | |
351 | (mml-insert-mime-headers cont type charset encoding) | |
352 | (insert "\n") | |
ce9401f3 | 353 | (insert coded))) |
c113de23 GM |
354 | ((eq (car cont) 'external) |
355 | (insert "Content-Type: message/external-body") | |
356 | (let ((parameters (mml-parameter-string | |
357 | cont '(expiration size permission))) | |
358 | (name (cdr (assq 'name cont)))) | |
359 | (when name | |
360 | (setq name (mml-parse-file-name name)) | |
361 | (if (stringp name) | |
362 | (mml-insert-parameter | |
363 | (mail-header-encode-parameter "name" name) | |
364 | "access-type=local-file") | |
365 | (mml-insert-parameter | |
366 | (mail-header-encode-parameter | |
367 | "name" (file-name-nondirectory (nth 2 name))) | |
368 | (mail-header-encode-parameter "site" (nth 1 name)) | |
369 | (mail-header-encode-parameter | |
370 | "directory" (file-name-directory (nth 2 name)))) | |
371 | (mml-insert-parameter | |
372 | (concat "access-type=" | |
373 | (if (member (nth 0 name) '("ftp@" "anonymous@")) | |
374 | "anon-ftp" | |
375 | "ftp"))))) | |
376 | (when parameters | |
377 | (mml-insert-parameter-string | |
378 | cont '(expiration size permission)))) | |
379 | (insert "\n\n") | |
380 | (insert "Content-Type: " (cdr (assq 'type cont)) "\n") | |
381 | (insert "Content-ID: " (message-make-message-id) "\n") | |
382 | (insert "Content-Transfer-Encoding: " | |
383 | (or (cdr (assq 'encoding cont)) "binary")) | |
384 | (insert "\n\n") | |
385 | (insert (or (cdr (assq 'contents cont)))) | |
386 | (insert "\n")) | |
387 | ((eq (car cont) 'multipart) | |
388 | (let* ((type (or (cdr (assq 'type cont)) "mixed")) | |
389 | (mml-generate-default-type (if (equal type "digest") | |
390 | "message/rfc822" | |
391 | "text/plain")) | |
392 | (handler (assoc type mml-generate-multipart-alist))) | |
393 | (if handler | |
394 | (funcall (cdr handler) cont) | |
395 | ;; No specific handler. Use default one. | |
396 | (let ((mml-boundary (mml-compute-boundary cont))) | |
397 | (insert (format "Content-Type: multipart/%s; boundary=\"%s\"\n" | |
398 | type mml-boundary)) | |
399 | ;; Skip `multipart' and `type' elements. | |
400 | (setq cont (cddr cont)) | |
401 | (while cont | |
402 | (insert "\n--" mml-boundary "\n") | |
403 | (mml-generate-mime-1 (pop cont))) | |
404 | (insert "\n--" mml-boundary "--\n"))))) | |
405 | (t | |
406 | (error "Invalid element: %S" cont))) | |
407 | (if mml-generate-mime-postprocess-function | |
408 | (funcall mml-generate-mime-postprocess-function cont)))) | |
409 | ||
410 | (defun mml-compute-boundary (cont) | |
411 | "Return a unique boundary that does not exist in CONT." | |
412 | (let ((mml-boundary (funcall mml-boundary-function | |
413 | (incf mml-multipart-number)))) | |
414 | ;; This function tries again and again until it has found | |
415 | ;; a unique boundary. | |
416 | (while (not (catch 'not-unique | |
417 | (mml-compute-boundary-1 cont)))) | |
418 | mml-boundary)) | |
419 | ||
420 | (defun mml-compute-boundary-1 (cont) | |
421 | (let (filename) | |
422 | (cond | |
423 | ((eq (car cont) 'part) | |
424 | (with-temp-buffer | |
425 | (cond | |
426 | ((cdr (assq 'buffer cont)) | |
427 | (insert-buffer-substring (cdr (assq 'buffer cont)))) | |
428 | ((and (setq filename (cdr (assq 'filename cont))) | |
429 | (not (equal (cdr (assq 'nofile cont)) "yes"))) | |
430 | (mm-insert-file-contents filename)) | |
431 | (t | |
432 | (insert (cdr (assq 'contents cont))))) | |
433 | (goto-char (point-min)) | |
434 | (when (re-search-forward (concat "^--" (regexp-quote mml-boundary)) | |
435 | nil t) | |
436 | (setq mml-boundary (funcall mml-boundary-function | |
437 | (incf mml-multipart-number))) | |
438 | (throw 'not-unique nil)))) | |
439 | ((eq (car cont) 'multipart) | |
440 | (mapcar 'mml-compute-boundary-1 (cddr cont)))) | |
441 | t)) | |
442 | ||
443 | (defun mml-make-boundary (number) | |
444 | (concat (make-string (% number 60) ?=) | |
445 | (if (> number 17) | |
446 | (format "%x" number) | |
447 | "") | |
448 | mml-base-boundary)) | |
449 | ||
450 | (defun mml-insert-mime-headers (cont type charset encoding) | |
451 | (let (parameters disposition description) | |
452 | (setq parameters | |
453 | (mml-parameter-string | |
454 | cont '(name access-type expiration size permission))) | |
455 | (when (or charset | |
456 | parameters | |
457 | (not (equal type mml-generate-default-type))) | |
458 | (when (consp charset) | |
459 | (error | |
460 | "Can't encode a part with several charsets.")) | |
461 | (insert "Content-Type: " type) | |
462 | (when charset | |
463 | (insert "; " (mail-header-encode-parameter | |
464 | "charset" (symbol-name charset)))) | |
465 | (when parameters | |
466 | (mml-insert-parameter-string | |
467 | cont '(name access-type expiration size permission))) | |
468 | (insert "\n")) | |
469 | (setq parameters | |
470 | (mml-parameter-string | |
471 | cont '(filename creation-date modification-date read-date))) | |
472 | (when (or (setq disposition (cdr (assq 'disposition cont))) | |
473 | parameters) | |
474 | (insert "Content-Disposition: " (or disposition "inline")) | |
475 | (when parameters | |
476 | (mml-insert-parameter-string | |
477 | cont '(filename creation-date modification-date read-date))) | |
478 | (insert "\n")) | |
479 | (unless (eq encoding '7bit) | |
480 | (insert (format "Content-Transfer-Encoding: %s\n" encoding))) | |
481 | (when (setq description (cdr (assq 'description cont))) | |
482 | (insert "Content-Description: " | |
483 | (mail-encode-encoded-word-string description) "\n")))) | |
484 | ||
485 | (defun mml-parameter-string (cont types) | |
486 | (let ((string "") | |
487 | value type) | |
488 | (while (setq type (pop types)) | |
489 | (when (setq value (cdr (assq type cont))) | |
490 | ;; Strip directory component from the filename parameter. | |
491 | (when (eq type 'filename) | |
492 | (setq value (file-name-nondirectory value))) | |
493 | (setq string (concat string "; " | |
494 | (mail-header-encode-parameter | |
495 | (symbol-name type) value))))) | |
496 | (when (not (zerop (length string))) | |
497 | string))) | |
498 | ||
499 | (defun mml-insert-parameter-string (cont types) | |
500 | (let (value type) | |
501 | (while (setq type (pop types)) | |
502 | (when (setq value (cdr (assq type cont))) | |
503 | ;; Strip directory component from the filename parameter. | |
504 | (when (eq type 'filename) | |
505 | (setq value (file-name-nondirectory value))) | |
506 | (mml-insert-parameter | |
507 | (mail-header-encode-parameter | |
508 | (symbol-name type) value)))))) | |
509 | ||
534aa266 DL |
510 | (eval-when-compile |
511 | (defvar ange-ftp-name-format) | |
512 | (defvar efs-path-regexp)) | |
c113de23 GM |
513 | (defun mml-parse-file-name (path) |
514 | (if (if (boundp 'efs-path-regexp) | |
515 | (string-match efs-path-regexp path) | |
516 | (if (boundp 'ange-ftp-name-format) | |
517 | (string-match (car ange-ftp-name-format) path))) | |
518 | (list (match-string 1 path) (match-string 2 path) | |
519 | (substring path (1+ (match-end 2)))) | |
520 | path)) | |
521 | ||
522 | (defun mml-insert-buffer (buffer) | |
523 | "Insert BUFFER at point and quote any MML markup." | |
524 | (save-restriction | |
525 | (narrow-to-region (point) (point)) | |
526 | (insert-buffer-substring buffer) | |
527 | (mml-quote-region (point-min) (point-max)) | |
528 | (goto-char (point-max)))) | |
529 | ||
530 | ;;; | |
531 | ;;; Transforming MIME to MML | |
532 | ;;; | |
533 | ||
534 | (defun mime-to-mml () | |
535 | "Translate the current buffer (which should be a message) into MML." | |
536 | ;; First decode the head. | |
537 | (save-restriction | |
538 | (message-narrow-to-head) | |
539 | (mail-decode-encoded-word-region (point-min) (point-max))) | |
540 | (let ((handles (mm-dissect-buffer t))) | |
541 | (goto-char (point-min)) | |
542 | (search-forward "\n\n" nil t) | |
543 | (delete-region (point) (point-max)) | |
544 | (if (stringp (car handles)) | |
545 | (mml-insert-mime handles) | |
546 | (mml-insert-mime handles t)) | |
547 | (mm-destroy-parts handles)) | |
548 | (save-restriction | |
549 | (message-narrow-to-head) | |
550 | ;; Remove them, they are confusing. | |
551 | (message-remove-header "Content-Type") | |
552 | (message-remove-header "MIME-Version") | |
553 | (message-remove-header "Content-Transfer-Encoding"))) | |
554 | ||
555 | (defun mml-to-mime () | |
556 | "Translate the current buffer from MML to MIME." | |
557 | (message-encode-message-body) | |
558 | (save-restriction | |
559 | (message-narrow-to-headers-or-head) | |
560 | (let ((mail-parse-charset message-default-charset)) | |
561 | (mail-encode-encoded-word-buffer)))) | |
562 | ||
563 | (defun mml-insert-mime (handle &optional no-markup) | |
564 | (let (textp buffer mmlp) | |
565 | ;; Determine type and stuff. | |
566 | (unless (stringp (car handle)) | |
567 | (unless (setq textp (equal (mm-handle-media-supertype handle) "text")) | |
568 | (save-excursion | |
569 | (set-buffer (setq buffer (mml-generate-new-buffer " *mml*"))) | |
570 | (mm-insert-part handle) | |
571 | (if (setq mmlp (equal (mm-handle-media-type handle) | |
572 | "message/rfc822")) | |
573 | (mime-to-mml))))) | |
574 | (if mmlp | |
575 | (mml-insert-mml-markup handle nil t t) | |
576 | (unless (and no-markup | |
577 | (equal (mm-handle-media-type handle) "text/plain")) | |
578 | (mml-insert-mml-markup handle buffer textp))) | |
579 | (cond | |
580 | (mmlp | |
581 | (insert-buffer buffer) | |
582 | (goto-char (point-max)) | |
583 | (insert "<#/mml>\n")) | |
584 | ((stringp (car handle)) | |
585 | (mapcar 'mml-insert-mime (cdr handle)) | |
586 | (insert "<#/multipart>\n")) | |
587 | (textp | |
588 | (let ((text (mm-get-part handle)) | |
589 | (charset (mail-content-type-get | |
590 | (mm-handle-type handle) 'charset))) | |
591 | (insert (mm-decode-string text charset))) | |
592 | (goto-char (point-max))) | |
593 | (t | |
594 | (insert "<#/part>\n"))))) | |
595 | ||
596 | (defun mml-insert-mml-markup (handle &optional buffer nofile mmlp) | |
597 | "Take a MIME handle and insert an MML tag." | |
598 | (if (stringp (car handle)) | |
599 | (insert "<#multipart type=" (mm-handle-media-subtype handle) | |
600 | ">\n") | |
601 | (if mmlp | |
602 | (insert "<#mml type=" (mm-handle-media-type handle)) | |
603 | (insert "<#part type=" (mm-handle-media-type handle))) | |
604 | (dolist (elem (append (cdr (mm-handle-type handle)) | |
605 | (cdr (mm-handle-disposition handle)))) | |
606 | (insert " " (symbol-name (car elem)) "=\"" (cdr elem) "\"")) | |
607 | (when (mm-handle-disposition handle) | |
608 | (insert " disposition=" (car (mm-handle-disposition handle)))) | |
609 | (when buffer | |
610 | (insert " buffer=\"" (buffer-name buffer) "\"")) | |
611 | (when nofile | |
612 | (insert " nofile=yes")) | |
613 | (when (mm-handle-description handle) | |
614 | (insert " description=\"" (mm-handle-description handle) "\"")) | |
615 | (insert ">\n"))) | |
616 | ||
617 | (defun mml-insert-parameter (&rest parameters) | |
618 | "Insert PARAMETERS in a nice way." | |
619 | (dolist (param parameters) | |
620 | (insert ";") | |
621 | (let ((point (point))) | |
622 | (insert " " param) | |
623 | (when (> (current-column) 71) | |
624 | (goto-char point) | |
625 | (insert "\n ") | |
626 | (end-of-line))))) | |
627 | ||
628 | ;;; | |
629 | ;;; Mode for inserting and editing MML forms | |
630 | ;;; | |
631 | ||
632 | (defvar mml-mode-map | |
633 | (let ((map (make-sparse-keymap)) | |
634 | (main (make-sparse-keymap))) | |
635 | (define-key map "f" 'mml-attach-file) | |
636 | (define-key map "b" 'mml-attach-buffer) | |
637 | (define-key map "e" 'mml-attach-external) | |
638 | (define-key map "q" 'mml-quote-region) | |
639 | (define-key map "m" 'mml-insert-multipart) | |
640 | (define-key map "p" 'mml-insert-part) | |
641 | (define-key map "v" 'mml-validate) | |
642 | (define-key map "P" 'mml-preview) | |
643 | ;;(define-key map "n" 'mml-narrow-to-part) | |
644 | (define-key main "\M-m" map) | |
645 | main)) | |
646 | ||
647 | (easy-menu-define | |
648 | mml-menu mml-mode-map "" | |
649 | '("MML" | |
650 | ("Attach" | |
651 | ["File" mml-attach-file t] | |
652 | ["Buffer" mml-attach-buffer t] | |
653 | ["External" mml-attach-external t]) | |
654 | ("Insert" | |
655 | ["Multipart" mml-insert-multipart t] | |
656 | ["Part" mml-insert-part t]) | |
657 | ;;["Narrow" mml-narrow-to-part t] | |
658 | ["Quote" mml-quote-region t] | |
659 | ["Validate" mml-validate t] | |
660 | ["Preview" mml-preview t])) | |
661 | ||
662 | (defvar mml-mode nil | |
663 | "Minor mode for editing MML.") | |
664 | ||
665 | (defun mml-mode (&optional arg) | |
666 | "Minor mode for editing MML. | |
667 | ||
668 | \\{mml-mode-map}" | |
669 | (interactive "P") | |
670 | (if (not (set (make-local-variable 'mml-mode) | |
671 | (if (null arg) (not mml-mode) | |
672 | (> (prefix-numeric-value arg) 0)))) | |
673 | nil | |
674 | (set (make-local-variable 'mml-mode) t) | |
675 | (unless (assq 'mml-mode minor-mode-alist) | |
676 | (push `(mml-mode " MML") minor-mode-alist)) | |
677 | (unless (assq 'mml-mode minor-mode-map-alist) | |
678 | (push (cons 'mml-mode mml-mode-map) | |
679 | minor-mode-map-alist))) | |
680 | (run-hooks 'mml-mode-hook)) | |
681 | ||
682 | ;;; | |
683 | ;;; Helper functions for reading MIME stuff from the minibuffer and | |
684 | ;;; inserting stuff to the buffer. | |
685 | ;;; | |
686 | ||
687 | (defun mml-minibuffer-read-file (prompt) | |
688 | (let ((file (read-file-name prompt nil nil t))) | |
689 | ;; Prevent some common errors. This is inspired by similar code in | |
690 | ;; VM. | |
691 | (when (file-directory-p file) | |
692 | (error "%s is a directory, cannot attach" file)) | |
693 | (unless (file-exists-p file) | |
694 | (error "No such file: %s" file)) | |
695 | (unless (file-readable-p file) | |
696 | (error "Permission denied: %s" file)) | |
697 | file)) | |
698 | ||
699 | (defun mml-minibuffer-read-type (name &optional default) | |
700 | (mailcap-parse-mimetypes) | |
701 | (let* ((default (or default | |
702 | (mm-default-file-encoding name) | |
703 | ;; Perhaps here we should check what the file | |
704 | ;; looks like, and offer text/plain if it looks | |
705 | ;; like text/plain. | |
706 | "application/octet-stream")) | |
707 | (string (completing-read | |
708 | (format "Content type (default %s): " default) | |
8538cc2a | 709 | (mapcar 'list (mailcap-mime-types))))) |
c113de23 GM |
710 | (if (not (equal string "")) |
711 | string | |
712 | default))) | |
713 | ||
714 | (defun mml-minibuffer-read-description () | |
715 | (let ((description (read-string "One line description: "))) | |
716 | (when (string-match "\\`[ \t]*\\'" description) | |
717 | (setq description nil)) | |
718 | description)) | |
719 | ||
720 | (defun mml-quote-region (beg end) | |
721 | "Quote the MML tags in the region." | |
722 | (interactive "r") | |
723 | (save-excursion | |
724 | (save-restriction | |
725 | ;; Temporarily narrow the region to defend from changes | |
726 | ;; invalidating END. | |
727 | (narrow-to-region beg end) | |
728 | (goto-char (point-min)) | |
729 | ;; Quote parts. | |
730 | (while (re-search-forward | |
731 | "<#!*/?\\(multipart\\|part\\|external\\|mml\\)" nil t) | |
732 | ;; Insert ! after the #. | |
733 | (goto-char (+ (match-beginning 0) 2)) | |
734 | (insert "!"))))) | |
735 | ||
736 | (defun mml-insert-tag (name &rest plist) | |
737 | "Insert an MML tag described by NAME and PLIST." | |
738 | (when (symbolp name) | |
739 | (setq name (symbol-name name))) | |
740 | (insert "<#" name) | |
741 | (while plist | |
742 | (let ((key (pop plist)) | |
743 | (value (pop plist))) | |
744 | (when value | |
745 | ;; Quote VALUE if it contains suspicious characters. | |
746 | (when (string-match "[\"'\\~/*;() \t\n]" value) | |
747 | (setq value (prin1-to-string value))) | |
748 | (insert (format " %s=%s" key value))))) | |
749 | (insert ">\n")) | |
750 | ||
751 | (defun mml-insert-empty-tag (name &rest plist) | |
752 | "Insert an empty MML tag described by NAME and PLIST." | |
753 | (when (symbolp name) | |
754 | (setq name (symbol-name name))) | |
755 | (apply #'mml-insert-tag name plist) | |
756 | (insert "<#/" name ">\n")) | |
757 | ||
758 | ;;; Attachment functions. | |
759 | ||
760 | (defun mml-attach-file (file &optional type description) | |
761 | "Attach a file to the outgoing MIME message. | |
762 | The file is not inserted or encoded until you send the message with | |
763 | `\\[message-send-and-exit]' or `\\[message-send]'. | |
764 | ||
765 | FILE is the name of the file to attach. TYPE is its content-type, a | |
766 | string of the form \"type/subtype\". DESCRIPTION is a one-line | |
767 | description of the attachment." | |
768 | (interactive | |
769 | (let* ((file (mml-minibuffer-read-file "Attach file: ")) | |
770 | (type (mml-minibuffer-read-type file)) | |
771 | (description (mml-minibuffer-read-description))) | |
772 | (list file type description))) | |
773 | (mml-insert-empty-tag 'part 'type type 'filename file | |
774 | 'disposition "attachment" 'description description)) | |
775 | ||
776 | (defun mml-attach-buffer (buffer &optional type description) | |
777 | "Attach a buffer to the outgoing MIME message. | |
778 | See `mml-attach-file' for details of operation." | |
779 | (interactive | |
780 | (let* ((buffer (read-buffer "Attach buffer: ")) | |
781 | (type (mml-minibuffer-read-type buffer "text/plain")) | |
782 | (description (mml-minibuffer-read-description))) | |
783 | (list buffer type description))) | |
784 | (mml-insert-empty-tag 'part 'type type 'buffer buffer | |
785 | 'disposition "attachment" 'description description)) | |
786 | ||
787 | (defun mml-attach-external (file &optional type description) | |
788 | "Attach an external file into the buffer. | |
789 | FILE is an ange-ftp/efs specification of the part location. | |
790 | TYPE is the MIME type to use." | |
791 | (interactive | |
792 | (let* ((file (mml-minibuffer-read-file "Attach external file: ")) | |
793 | (type (mml-minibuffer-read-type file)) | |
794 | (description (mml-minibuffer-read-description))) | |
795 | (list file type description))) | |
796 | (mml-insert-empty-tag 'external 'type type 'name file | |
797 | 'disposition "attachment" 'description description)) | |
798 | ||
799 | (defun mml-insert-multipart (&optional type) | |
800 | (interactive (list (completing-read "Multipart type (default mixed): " | |
801 | '(("mixed") ("alternative") ("digest") ("parallel") | |
802 | ("signed") ("encrypted")) | |
803 | nil nil "mixed"))) | |
804 | (or type | |
805 | (setq type "mixed")) | |
806 | (mml-insert-empty-tag "multipart" 'type type) | |
807 | (forward-line -1)) | |
808 | ||
809 | (defun mml-insert-part (&optional type) | |
810 | (interactive | |
811 | (list (mml-minibuffer-read-type ""))) | |
812 | (mml-insert-tag 'part 'type type 'disposition "inline") | |
813 | (forward-line -1)) | |
814 | ||
815 | (defun mml-preview (&optional raw) | |
816 | "Display current buffer with Gnus, in a new buffer. | |
817 | If RAW, don't highlight the article." | |
818 | (interactive "P") | |
819 | (let ((buf (current-buffer)) | |
820 | (message-posting-charset (or (gnus-setup-posting-charset | |
821 | (save-restriction | |
822 | (message-narrow-to-headers-or-head) | |
823 | (message-fetch-field "Newsgroups"))) | |
824 | message-posting-charset))) | |
825 | (switch-to-buffer (get-buffer-create | |
826 | (concat (if raw "*Raw MIME preview of " | |
827 | "*MIME preview of ") (buffer-name)))) | |
828 | (erase-buffer) | |
829 | (insert-buffer buf) | |
830 | (if (re-search-forward | |
831 | (concat "^" (regexp-quote mail-header-separator) "\n") nil t) | |
832 | (replace-match "\n")) | |
833 | (mml-to-mime) | |
834 | (if raw | |
ce9401f3 DL |
835 | (when (fboundp 'set-buffer-multibyte) |
836 | (let ((s (buffer-string))) | |
837 | ;; Insert the content into unibyte buffer. | |
838 | (erase-buffer) | |
839 | (mm-disable-multibyte) | |
840 | (insert s))) | |
c113de23 GM |
841 | (let ((gnus-newsgroup-charset (car message-posting-charset))) |
842 | (run-hooks 'gnus-article-decode-hook) | |
843 | (let ((gnus-newsgroup-name "dummy")) | |
844 | (gnus-article-prepare-display)))) | |
845 | (fundamental-mode) | |
846 | (setq buffer-read-only t) | |
847 | (goto-char (point-min)))) | |
848 | ||
849 | (defun mml-validate () | |
850 | "Validate the current MML document." | |
851 | (interactive) | |
852 | (mml-parse)) | |
853 | ||
854 | (provide 'mml) | |
855 | ||
856 | ;;; mml.el ends here |