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c0393b5e | 1 | ;;; mailcap.el --- MIME media types configuration |
e84b4b86 | 2 | |
acaf905b | 3 | ;; Copyright (C) 1998-2012 Free Software Foundation, Inc. |
c113de23 GM |
4 | |
5 | ;; Author: William M. Perry <wmperry@aventail.com> | |
6 | ;; Lars Magne Ingebrigtsen <larsi@gnus.org> | |
c0393b5e | 7 | ;; Keywords: news, mail, multimedia |
c113de23 GM |
8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
5e809f55 | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
c113de23 | 12 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
c113de23 GM |
15 | |
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
5e809f55 | 18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
c113de23 GM |
19 | ;; GNU General Public License for more details. |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
c113de23 GM |
23 | |
24 | ;;; Commentary: | |
25 | ||
c0393b5e DL |
26 | ;; Provides configuration of MIME media types from directly from Lisp |
27 | ;; and via the usual mailcap mechanism (RFC 1524). Deals with | |
28 | ;; mime.types similarly. | |
29 | ||
c113de23 GM |
30 | ;;; Code: |
31 | ||
32 | (eval-when-compile (require 'cl)) | |
b890d447 MB |
33 | (autoload 'mail-header-parse-content-type "mail-parse") |
34 | ||
35 | ;; `mm-delete-duplicates' is an alias for `delete-dups' in Emacs 22. | |
36 | (defalias 'mailcap-delete-duplicates | |
37 | (if (fboundp 'delete-dups) | |
38 | 'delete-dups | |
39 | (autoload 'mm-delete-duplicates "mm-util") | |
40 | 'mm-delete-duplicates)) | |
c113de23 | 41 | |
d844ef2f JL |
42 | ;; `mailcap-replace-in-string' is an alias like `gnus-replace-in-string'. |
43 | (eval-and-compile | |
44 | (cond | |
45 | ((fboundp 'replace-regexp-in-string) | |
46 | (defun mailcap-replace-in-string (string regexp newtext &optional literal) | |
47 | "Replace all matches for REGEXP with NEWTEXT in STRING. | |
48 | If LITERAL is non-nil, insert NEWTEXT literally. Return a new | |
49 | string containing the replacements. | |
50 | This is a compatibility function for different Emacsen." | |
51 | (replace-regexp-in-string regexp newtext string nil literal))) | |
52 | ((fboundp 'replace-in-string) | |
53 | (defalias 'mailcap-replace-in-string 'replace-in-string)))) | |
54 | ||
c0393b5e DL |
55 | (defgroup mailcap nil |
56 | "Definition of viewers for MIME types." | |
57 | :version "21.1" | |
58 | :group 'mime) | |
59 | ||
c113de23 GM |
60 | (defvar mailcap-parse-args-syntax-table |
61 | (let ((table (copy-syntax-table emacs-lisp-mode-syntax-table))) | |
62 | (modify-syntax-entry ?' "\"" table) | |
63 | (modify-syntax-entry ?` "\"" table) | |
64 | (modify-syntax-entry ?{ "(" table) | |
65 | (modify-syntax-entry ?} ")" table) | |
66 | table) | |
23f87bed MB |
67 | "A syntax table for parsing SGML attributes.") |
68 | ||
69 | (eval-and-compile | |
70 | (when (featurep 'xemacs) | |
71 | (condition-case nil | |
72 | (require 'lpr) | |
73 | (error nil)))) | |
74 | ||
75 | (defvar mailcap-print-command | |
76 | (mapconcat 'identity | |
77 | (cons (if (boundp 'lpr-command) | |
78 | lpr-command | |
79 | "lpr") | |
80 | (when (boundp 'lpr-switches) | |
81 | (if (stringp lpr-switches) | |
82 | (list lpr-switches) | |
83 | lpr-switches))) | |
84 | " ") | |
7877f373 | 85 | "Shell command (including switches) used to print PostScript files.") |
c113de23 | 86 | |
c0393b5e DL |
87 | ;; Postpone using defcustom for this as it's so big and we essentially |
88 | ;; have to have two copies of the data around then. Perhaps just | |
89 | ;; customize the Lisp viewers and rely on the normal configuration | |
90 | ;; files for the rest? -- fx | |
c113de23 | 91 | (defvar mailcap-mime-data |
23f87bed | 92 | `(("application" |
2a9878fd | 93 | ("vnd\\.ms-excel" |
23f87bed MB |
94 | (viewer . "gnumeric %s") |
95 | (test . (getenv "DISPLAY")) | |
96 | (type . "application/vnd.ms-excel")) | |
c113de23 GM |
97 | ("x-x509-ca-cert" |
98 | (viewer . ssl-view-site-cert) | |
99 | (test . (fboundp 'ssl-view-site-cert)) | |
100 | (type . "application/x-x509-ca-cert")) | |
101 | ("x-x509-user-cert" | |
102 | (viewer . ssl-view-user-cert) | |
103 | (test . (fboundp 'ssl-view-user-cert)) | |
104 | (type . "application/x-x509-user-cert")) | |
105 | ("octet-stream" | |
106 | (viewer . mailcap-save-binary-file) | |
107 | (non-viewer . t) | |
108 | (type . "application/octet-stream")) | |
c113de23 | 109 | ("dvi" |
23f87bed MB |
110 | (viewer . "xdvi -safer %s") |
111 | (test . (eq window-system 'x)) | |
c113de23 | 112 | ("needsx11") |
23f87bed MB |
113 | (type . "application/dvi") |
114 | ("print" . "dvips -qRP %s")) | |
c113de23 GM |
115 | ("dvi" |
116 | (viewer . "dvitty %s") | |
117 | (test . (not (getenv "DISPLAY"))) | |
23f87bed MB |
118 | (type . "application/dvi") |
119 | ("print" . "dvips -qRP %s")) | |
c113de23 GM |
120 | ("emacs-lisp" |
121 | (viewer . mailcap-maybe-eval) | |
122 | (type . "application/emacs-lisp")) | |
23f87bed MB |
123 | ("x-emacs-lisp" |
124 | (viewer . mailcap-maybe-eval) | |
125 | (type . "application/x-emacs-lisp")) | |
c113de23 GM |
126 | ("x-tar" |
127 | (viewer . mailcap-save-binary-file) | |
128 | (non-viewer . t) | |
129 | (type . "application/x-tar")) | |
130 | ("x-latex" | |
131 | (viewer . tex-mode) | |
132 | (test . (fboundp 'tex-mode)) | |
133 | (type . "application/x-latex")) | |
134 | ("x-tex" | |
135 | (viewer . tex-mode) | |
136 | (test . (fboundp 'tex-mode)) | |
137 | (type . "application/x-tex")) | |
138 | ("latex" | |
139 | (viewer . tex-mode) | |
140 | (test . (fboundp 'tex-mode)) | |
141 | (type . "application/latex")) | |
142 | ("tex" | |
143 | (viewer . tex-mode) | |
144 | (test . (fboundp 'tex-mode)) | |
145 | (type . "application/tex")) | |
146 | ("texinfo" | |
147 | (viewer . texinfo-mode) | |
148 | (test . (fboundp 'texinfo-mode)) | |
149 | (type . "application/tex")) | |
150 | ("zip" | |
151 | (viewer . mailcap-save-binary-file) | |
152 | (non-viewer . t) | |
153 | (type . "application/zip") | |
154 | ("copiousoutput")) | |
c0393b5e | 155 | ("pdf" |
23f87bed | 156 | (viewer . "gv -safer %s") |
c0393b5e | 157 | (type . "application/pdf") |
23f87bed MB |
158 | (test . window-system) |
159 | ("print" . ,(concat "pdf2ps %s - | " mailcap-print-command))) | |
c0393b5e | 160 | ("pdf" |
f0096211 | 161 | (viewer . "gpdf %s") |
c0393b5e | 162 | (type . "application/pdf") |
23f87bed MB |
163 | ("print" . ,(concat "pdftops %s - | " mailcap-print-command)) |
164 | (test . (eq window-system 'x))) | |
c113de23 | 165 | ("pdf" |
f0096211 MB |
166 | (viewer . "xpdf %s") |
167 | (type . "application/pdf") | |
168 | ("print" . ,(concat "pdftops %s - | " mailcap-print-command)) | |
169 | (test . (eq window-system 'x))) | |
23f87bed MB |
170 | ("pdf" |
171 | (viewer . ,(concat "pdftotext %s -")) | |
172 | (type . "application/pdf") | |
173 | ("print" . ,(concat "pdftops %s - | " mailcap-print-command)) | |
174 | ("copiousoutput")) | |
c113de23 | 175 | ("postscript" |
c0393b5e DL |
176 | (viewer . "gv -safer %s") |
177 | (type . "application/postscript") | |
178 | (test . window-system) | |
23f87bed | 179 | ("print" . ,(concat mailcap-print-command " %s")) |
c0393b5e | 180 | ("needsx11")) |
c113de23 GM |
181 | ("postscript" |
182 | (viewer . "ghostview -dSAFER %s") | |
183 | (type . "application/postscript") | |
23f87bed MB |
184 | (test . (eq window-system 'x)) |
185 | ("print" . ,(concat mailcap-print-command " %s")) | |
c113de23 GM |
186 | ("needsx11")) |
187 | ("postscript" | |
188 | (viewer . "ps2ascii %s") | |
189 | (type . "application/postscript") | |
190 | (test . (not (getenv "DISPLAY"))) | |
23f87bed MB |
191 | ("print" . ,(concat mailcap-print-command " %s")) |
192 | ("copiousoutput")) | |
193 | ("sieve" | |
194 | (viewer . sieve-mode) | |
195 | (test . (fboundp 'sieve-mode)) | |
196 | (type . "application/sieve")) | |
197 | ("pgp-keys" | |
198 | (viewer . "gpg --import --interactive --verbose") | |
199 | (type . "application/pgp-keys") | |
200 | ("needsterminal"))) | |
c113de23 GM |
201 | ("audio" |
202 | ("x-mpeg" | |
203 | (viewer . "maplay %s") | |
204 | (type . "audio/x-mpeg")) | |
205 | (".*" | |
206 | (viewer . "showaudio") | |
207 | (type . "audio/*"))) | |
208 | ("message" | |
209 | ("rfc-*822" | |
210 | (viewer . mm-view-message) | |
211 | (test . (and (featurep 'gnus) | |
212 | (gnus-alive-p))) | |
213 | (type . "message/rfc822")) | |
214 | ("rfc-*822" | |
215 | (viewer . vm-mode) | |
216 | (test . (fboundp 'vm-mode)) | |
217 | (type . "message/rfc822")) | |
218 | ("rfc-*822" | |
219 | (viewer . w3-mode) | |
220 | (test . (fboundp 'w3-mode)) | |
221 | (type . "message/rfc822")) | |
222 | ("rfc-*822" | |
223 | (viewer . view-mode) | |
c113de23 GM |
224 | (type . "message/rfc822"))) |
225 | ("image" | |
226 | ("x-xwd" | |
227 | (viewer . "xwud -in %s") | |
228 | (type . "image/x-xwd") | |
229 | ("compose" . "xwd -frame > %s") | |
23f87bed | 230 | (test . (eq window-system 'x)) |
c113de23 GM |
231 | ("needsx11")) |
232 | ("x11-dump" | |
233 | (viewer . "xwud -in %s") | |
234 | (type . "image/x-xwd") | |
235 | ("compose" . "xwd -frame > %s") | |
23f87bed | 236 | (test . (eq window-system 'x)) |
c113de23 GM |
237 | ("needsx11")) |
238 | ("windowdump" | |
239 | (viewer . "xwud -in %s") | |
240 | (type . "image/x-xwd") | |
241 | ("compose" . "xwd -frame > %s") | |
23f87bed | 242 | (test . (eq window-system 'x)) |
c113de23 | 243 | ("needsx11")) |
c113de23 GM |
244 | (".*" |
245 | (viewer . "display %s") | |
246 | (type . "image/*") | |
23f87bed | 247 | (test . (eq window-system 'x)) |
c113de23 GM |
248 | ("needsx11")) |
249 | (".*" | |
250 | (viewer . "ee %s") | |
251 | (type . "image/*") | |
23f87bed | 252 | (test . (eq window-system 'x)) |
c113de23 GM |
253 | ("needsx11"))) |
254 | ("text" | |
255 | ("plain" | |
256 | (viewer . w3-mode) | |
257 | (test . (fboundp 'w3-mode)) | |
258 | (type . "text/plain")) | |
259 | ("plain" | |
260 | (viewer . view-mode) | |
261 | (test . (fboundp 'view-mode)) | |
262 | (type . "text/plain")) | |
263 | ("plain" | |
264 | (viewer . fundamental-mode) | |
265 | (type . "text/plain")) | |
266 | ("enriched" | |
23f87bed | 267 | (viewer . enriched-decode) |
c113de23 GM |
268 | (test . (fboundp 'enriched-decode)) |
269 | (type . "text/enriched")) | |
270 | ("html" | |
271 | (viewer . mm-w3-prepare-buffer) | |
272 | (test . (fboundp 'w3-prepare-buffer)) | |
01c52d31 MB |
273 | (type . "text/html")) |
274 | ("dns" | |
275 | (viewer . dns-mode) | |
276 | (test . (fboundp 'dns-mode)) | |
277 | (type . "text/dns"))) | |
c113de23 GM |
278 | ("video" |
279 | ("mpeg" | |
280 | (viewer . "mpeg_play %s") | |
281 | (type . "video/mpeg") | |
23f87bed | 282 | (test . (eq window-system 'x)) |
c113de23 GM |
283 | ("needsx11"))) |
284 | ("x-world" | |
285 | ("x-vrml" | |
286 | (viewer . "webspace -remote %s -URL %u") | |
287 | (type . "x-world/x-vrml") | |
288 | ("description" | |
289 | "VRML document"))) | |
290 | ("archive" | |
291 | ("tar" | |
292 | (viewer . tar-mode) | |
293 | (type . "archive/tar") | |
294 | (test . (fboundp 'tar-mode))))) | |
295 | "The mailcap structure is an assoc list of assoc lists. | |
296 | 1st assoc list is keyed on the major content-type | |
297 | 2nd assoc list is keyed on the minor content-type (which can be a regexp) | |
298 | ||
299 | Which looks like: | |
300 | ----------------- | |
301 | ((\"application\" | |
302 | (\"postscript\" . <info>)) | |
303 | (\"text\" | |
304 | (\"plain\" . <info>))) | |
305 | ||
306 | Where <info> is another assoc list of the various information | |
c0393b5e | 307 | related to the mailcap RFC 1524. This is keyed on the lowercase |
c113de23 | 308 | attribute name (viewer, test, etc). This looks like: |
c0393b5e DL |
309 | ((viewer . VIEWERINFO) |
310 | (test . TESTINFO) | |
311 | (xxxx . \"STRING\") | |
312 | FLAG) | |
c113de23 | 313 | |
c0393b5e | 314 | Where VIEWERINFO specifies how the content-type is viewed. Can be |
c113de23 GM |
315 | a string, in which case it is run through a shell, with |
316 | appropriate parameters, or a symbol, in which case the symbol is | |
c0393b5e DL |
317 | `funcall'ed, with the buffer as an argument. |
318 | ||
319 | TESTINFO is a test for the viewer's applicability, or nil. If nil, it | |
320 | means the viewer is always valid. If it is a Lisp function, it is | |
321 | called with a list of items from any extra fields from the | |
322 | Content-Type header as argument to return a boolean value for the | |
323 | validity. Otherwise, if it is a non-function Lisp symbol or list | |
324 | whose car is a symbol, it is `eval'led to yield the validity. If it | |
325 | is a string or list of strings, it represents a shell command to run | |
326 | to return a true or false shell value for the validity.") | |
f8bbbafb | 327 | (put 'mailcap-mime-data 'risky-local-variable t) |
c0393b5e DL |
328 | |
329 | (defcustom mailcap-download-directory nil | |
003dabb7 | 330 | "*Directory to which `mailcap-save-binary-file' downloads files by default. |
f0529b5b | 331 | nil means your home directory." |
003dabb7 DL |
332 | :type '(choice (const :tag "Home directory" nil) |
333 | directory) | |
c0393b5e | 334 | :group 'mailcap) |
c113de23 | 335 | |
23f87bed | 336 | (defvar mailcap-poor-system-types |
f5ec697d | 337 | '(ms-dos windows-nt) |
23f87bed MB |
338 | "Systems that don't have a Unix-like directory hierarchy.") |
339 | ||
c113de23 GM |
340 | ;;; |
341 | ;;; Utility functions | |
342 | ;;; | |
343 | ||
c113de23 GM |
344 | (defun mailcap-save-binary-file () |
345 | (goto-char (point-min)) | |
346 | (unwind-protect | |
347 | (let ((file (read-file-name | |
348 | "Filename to save as: " | |
349 | (or mailcap-download-directory "~/"))) | |
350 | (require-final-newline nil)) | |
351 | (write-region (point-min) (point-max) file)) | |
352 | (kill-buffer (current-buffer)))) | |
353 | ||
354 | (defvar mailcap-maybe-eval-warning | |
355 | "*** WARNING *** | |
356 | ||
c0393b5e | 357 | This MIME part contains untrusted and possibly harmful content. |
c113de23 GM |
358 | If you evaluate the Emacs Lisp code contained in it, a lot of nasty |
359 | things can happen. Please examine the code very carefully before you | |
360 | instruct Emacs to evaluate it. You can browse the buffer containing | |
361 | the code using \\[scroll-other-window]. | |
362 | ||
363 | If you are unsure what to do, please answer \"no\"." | |
364 | "Text of warning message displayed by `mailcap-maybe-eval'. | |
365 | Make sure that this text consists only of few text lines. Otherwise, | |
366 | Gnus might fail to display all of it.") | |
a1506d29 | 367 | |
c113de23 | 368 | (defun mailcap-maybe-eval () |
c0393b5e | 369 | "Maybe evaluate a buffer of Emacs Lisp code." |
c113de23 GM |
370 | (let ((lisp-buffer (current-buffer))) |
371 | (goto-char (point-min)) | |
372 | (when | |
373 | (save-window-excursion | |
374 | (delete-other-windows) | |
375 | (let ((buffer (get-buffer-create (generate-new-buffer-name | |
376 | "*Warning*")))) | |
377 | (unwind-protect | |
378 | (with-current-buffer buffer | |
c0393b5e | 379 | (insert (substitute-command-keys |
c113de23 GM |
380 | mailcap-maybe-eval-warning)) |
381 | (goto-char (point-min)) | |
382 | (display-buffer buffer) | |
383 | (yes-or-no-p "This is potentially dangerous emacs-lisp code, evaluate it? ")) | |
384 | (kill-buffer buffer)))) | |
385 | (eval-buffer (current-buffer))) | |
386 | (when (buffer-live-p lisp-buffer) | |
387 | (with-current-buffer lisp-buffer | |
388 | (emacs-lisp-mode))))) | |
389 | ||
390 | ||
391 | ;;; | |
392 | ;;; The mailcap parser | |
393 | ;;; | |
394 | ||
395 | (defun mailcap-replace-regexp (regexp to-string) | |
396 | ;; Quiet replace-regexp. | |
397 | (goto-char (point-min)) | |
398 | (while (re-search-forward regexp nil t) | |
399 | (replace-match to-string t nil))) | |
400 | ||
401 | (defvar mailcap-parsed-p nil) | |
402 | ||
403 | (defun mailcap-parse-mailcaps (&optional path force) | |
404 | "Parse out all the mailcaps specified in a path string PATH. | |
405 | Components of PATH are separated by the `path-separator' character | |
406 | appropriate for this system. If FORCE, re-parse even if already | |
407 | parsed. If PATH is omitted, use the value of environment variable | |
408 | MAILCAPS if set; otherwise (on Unix) use the path from RFC 1524, plus | |
409 | /usr/local/etc/mailcap." | |
410 | (interactive (list nil t)) | |
411 | (when (or (not mailcap-parsed-p) | |
412 | force) | |
413 | (cond | |
414 | (path nil) | |
415 | ((getenv "MAILCAPS") (setq path (getenv "MAILCAPS"))) | |
23f87bed | 416 | ((memq system-type mailcap-poor-system-types) |
c113de23 GM |
417 | (setq path '("~/.mailcap" "~/mail.cap" "~/etc/mail.cap"))) |
418 | (t (setq path | |
419 | ;; This is per RFC 1524, specifically | |
420 | ;; with /usr before /usr/local. | |
421 | '("~/.mailcap" "/etc/mailcap" "/usr/etc/mailcap" | |
422 | "/usr/local/etc/mailcap")))) | |
423 | (let ((fnames (reverse | |
424 | (if (stringp path) | |
4def29e7 | 425 | (split-string path path-separator t) |
c113de23 GM |
426 | path))) |
427 | fname) | |
428 | (while fnames | |
429 | (setq fname (car fnames)) | |
430 | (if (and (file-readable-p fname) | |
431 | (file-regular-p fname)) | |
432 | (mailcap-parse-mailcap fname)) | |
433 | (setq fnames (cdr fnames)))) | |
434 | (setq mailcap-parsed-p t))) | |
435 | ||
436 | (defun mailcap-parse-mailcap (fname) | |
c0393b5e | 437 | "Parse out the mailcap file specified by FNAME." |
c113de23 GM |
438 | (let (major ; The major mime type (image/audio/etc) |
439 | minor ; The minor mime type (gif, basic, etc) | |
440 | save-pos ; Misc saved positions used in parsing | |
441 | viewer ; How to view this mime type | |
442 | info ; Misc info about this mime type | |
443 | ) | |
444 | (with-temp-buffer | |
445 | (insert-file-contents fname) | |
446 | (set-syntax-table mailcap-parse-args-syntax-table) | |
447 | (mailcap-replace-regexp "#.*" "") ; Remove all comments | |
448 | (mailcap-replace-regexp "\\\\[ \t]*\n" " ") ; And collapse spaces | |
449 | (mailcap-replace-regexp "\n+" "\n") ; And blank lines | |
450 | (goto-char (point-max)) | |
451 | (skip-chars-backward " \t\n") | |
452 | (delete-region (point) (point-max)) | |
453 | (while (not (bobp)) | |
454 | (skip-chars-backward " \t\n") | |
455 | (beginning-of-line) | |
456 | (setq save-pos (point) | |
457 | info nil) | |
458 | (skip-chars-forward "^/; \t\n") | |
459 | (downcase-region save-pos (point)) | |
460 | (setq major (buffer-substring save-pos (point))) | |
461 | (skip-chars-forward " \t") | |
462 | (setq minor "") | |
463 | (when (eq (char-after) ?/) | |
464 | (forward-char) | |
465 | (skip-chars-forward " \t") | |
466 | (setq save-pos (point)) | |
467 | (skip-chars-forward "^; \t\n") | |
468 | (downcase-region save-pos (point)) | |
469 | (setq minor | |
470 | (cond | |
471 | ((eq ?* (or (char-after save-pos) 0)) ".*") | |
472 | ((= (point) save-pos) ".*") | |
473 | (t (regexp-quote (buffer-substring save-pos (point))))))) | |
474 | (skip-chars-forward " \t") | |
475 | ;;; Got the major/minor chunks, now for the viewers/etc | |
476 | ;;; The first item _must_ be a viewer, according to the | |
c0393b5e | 477 | ;;; RFC for mailcap files (#1524) |
c113de23 | 478 | (setq viewer "") |
c0393b5e | 479 | (when (eq (char-after) ?\;) |
c113de23 GM |
480 | (forward-char) |
481 | (skip-chars-forward " \t") | |
482 | (setq save-pos (point)) | |
483 | (skip-chars-forward "^;\n") | |
484 | ;; skip \; | |
485 | (while (eq (char-before) ?\\) | |
486 | (backward-delete-char 1) | |
487 | (forward-char) | |
488 | (skip-chars-forward "^;\n")) | |
489 | (if (eq (or (char-after save-pos) 0) ?') | |
490 | (setq viewer (progn | |
491 | (narrow-to-region (1+ save-pos) (point)) | |
492 | (goto-char (point-min)) | |
493 | (prog1 | |
494 | (read (current-buffer)) | |
495 | (goto-char (point-max)) | |
496 | (widen)))) | |
497 | (setq viewer (buffer-substring save-pos (point))))) | |
498 | (setq save-pos (point)) | |
499 | (end-of-line) | |
c0393b5e | 500 | (unless (equal viewer "") |
c113de23 GM |
501 | (setq info (nconc (list (cons 'viewer viewer) |
502 | (cons 'type (concat major "/" | |
503 | (if (string= minor ".*") | |
504 | "*" minor)))) | |
505 | (mailcap-parse-mailcap-extras save-pos (point)))) | |
506 | (mailcap-mailcap-entry-passes-test info) | |
507 | (mailcap-add-mailcap-entry major minor info)) | |
508 | (beginning-of-line))))) | |
509 | ||
510 | (defun mailcap-parse-mailcap-extras (st nd) | |
c0393b5e | 511 | "Grab all the extra stuff from a mailcap entry." |
c113de23 GM |
512 | (let ( |
513 | name ; From name= | |
514 | value ; its value | |
515 | results ; Assoc list of results | |
516 | name-pos ; Start of XXXX= position | |
517 | val-pos ; Start of value position | |
518 | done ; Found end of \'d ;s? | |
519 | ) | |
520 | (save-restriction | |
521 | (narrow-to-region st nd) | |
522 | (goto-char (point-min)) | |
523 | (skip-chars-forward " \n\t;") | |
524 | (while (not (eobp)) | |
525 | (setq done nil) | |
526 | (setq name-pos (point)) | |
527 | (skip-chars-forward "^ \n\t=;") | |
528 | (downcase-region name-pos (point)) | |
529 | (setq name (buffer-substring name-pos (point))) | |
530 | (skip-chars-forward " \t\n") | |
531 | (if (not (eq (char-after (point)) ?=)) ; There is no value | |
532 | (setq value t) | |
533 | (skip-chars-forward " \t\n=") | |
534 | (setq val-pos (point)) | |
535 | (if (memq (char-after val-pos) '(?\" ?')) | |
536 | (progn | |
537 | (setq val-pos (1+ val-pos)) | |
538 | (condition-case nil | |
539 | (progn | |
540 | (forward-sexp 1) | |
541 | (backward-char 1)) | |
542 | (error (goto-char (point-max))))) | |
543 | (while (not done) | |
544 | (skip-chars-forward "^;") | |
545 | (if (eq (char-after (1- (point))) ?\\ ) | |
546 | (progn | |
547 | (subst-char-in-region (1- (point)) (point) ?\\ ? ) | |
548 | (skip-chars-forward ";")) | |
549 | (setq done t)))) | |
550 | (setq value (buffer-substring val-pos (point)))) | |
7347faa8 MB |
551 | ;; `test' as symbol, others like "copiousoutput" and "needsx11" as |
552 | ;; strings | |
553 | (setq results (cons (cons (if (string-equal name "test") | |
554 | 'test | |
555 | name) | |
556 | value) results)) | |
c113de23 GM |
557 | (skip-chars-forward " \";\n\t")) |
558 | results))) | |
559 | ||
560 | (defun mailcap-mailcap-entry-passes-test (info) | |
e7f767c2 | 561 | "Return non-nil if mailcap entry INFO passes its test clause. |
c0393b5e DL |
562 | Also return non-nil if no test clause is present." |
563 | (let ((test (assq 'test info)) ; The test clause | |
564 | status) | |
c113de23 GM |
565 | (setq status (and test (split-string (cdr test) " "))) |
566 | (if (and (or (assoc "needsterm" info) | |
567 | (assoc "needsterminal" info) | |
568 | (assoc "needsx11" info)) | |
569 | (not (getenv "DISPLAY"))) | |
570 | (setq status nil) | |
571 | (cond | |
572 | ((and (equal (nth 0 status) "test") | |
573 | (equal (nth 1 status) "-n") | |
574 | (or (equal (nth 2 status) "$DISPLAY") | |
575 | (equal (nth 2 status) "\"$DISPLAY\""))) | |
576 | (setq status (if (getenv "DISPLAY") t nil))) | |
577 | ((and (equal (nth 0 status) "test") | |
578 | (equal (nth 1 status) "-z") | |
579 | (or (equal (nth 2 status) "$DISPLAY") | |
580 | (equal (nth 2 status) "\"$DISPLAY\""))) | |
581 | (setq status (if (getenv "DISPLAY") nil t))) | |
582 | (test nil) | |
583 | (t nil))) | |
584 | (and test (listp test) (setcdr test status)))) | |
585 | ||
586 | ;;; | |
587 | ;;; The action routines. | |
588 | ;;; | |
589 | ||
590 | (defun mailcap-possible-viewers (major minor) | |
c0393b5e | 591 | "Return a list of possible viewers from MAJOR for minor type MINOR." |
c113de23 GM |
592 | (let ((exact '()) |
593 | (wildcard '())) | |
594 | (while major | |
595 | (cond | |
596 | ((equal (car (car major)) minor) | |
597 | (setq exact (cons (cdr (car major)) exact))) | |
23f87bed | 598 | ((and minor (string-match (concat "^" (car (car major)) "$") minor)) |
c113de23 GM |
599 | (setq wildcard (cons (cdr (car major)) wildcard)))) |
600 | (setq major (cdr major))) | |
601 | (nconc exact wildcard))) | |
602 | ||
603 | (defun mailcap-unescape-mime-test (test type-info) | |
604 | (let (save-pos save-chr subst) | |
605 | (cond | |
606 | ((symbolp test) test) | |
607 | ((and (listp test) (symbolp (car test))) test) | |
608 | ((or (stringp test) | |
609 | (and (listp test) (stringp (car test)) | |
610 | (setq test (mapconcat 'identity test " ")))) | |
611 | (with-temp-buffer | |
612 | (insert test) | |
613 | (goto-char (point-min)) | |
614 | (while (not (eobp)) | |
615 | (skip-chars-forward "^%") | |
616 | (if (/= (- (point) | |
617 | (progn (skip-chars-backward "\\\\") | |
618 | (point))) | |
619 | 0) ; It is an escaped % | |
620 | (progn | |
621 | (delete-char 1) | |
622 | (skip-chars-forward "%.")) | |
623 | (setq save-pos (point)) | |
624 | (skip-chars-forward "%") | |
625 | (setq save-chr (char-after (point))) | |
c0393b5e DL |
626 | ;; Escapes: |
627 | ;; %s: name of a file for the body data | |
628 | ;; %t: content-type | |
629 | ;; %{<parameter name}: value of parameter in mailcap entry | |
630 | ;; %n: number of sub-parts for multipart content-type | |
631 | ;; %F: a set of content-type/filename pairs for multiparts | |
c113de23 GM |
632 | (cond |
633 | ((null save-chr) nil) | |
634 | ((= save-chr ?t) | |
635 | (delete-region save-pos (progn (forward-char 1) (point))) | |
636 | (insert (or (cdr (assq 'type type-info)) "\"\""))) | |
c0393b5e | 637 | ((memq save-chr '(?M ?n ?F)) |
c113de23 GM |
638 | (delete-region save-pos (progn (forward-char 1) (point))) |
639 | (insert "\"\"")) | |
640 | ((= save-chr ?{) | |
641 | (forward-char 1) | |
642 | (skip-chars-forward "^}") | |
643 | (downcase-region (+ 2 save-pos) (point)) | |
644 | (setq subst (buffer-substring (+ 2 save-pos) (point))) | |
645 | (delete-region save-pos (1+ (point))) | |
646 | (insert (or (cdr (assoc subst type-info)) "\"\""))) | |
647 | (t nil)))) | |
648 | (buffer-string))) | |
c0393b5e | 649 | (t (error "Bad value to mailcap-unescape-mime-test: %s" test))))) |
c113de23 GM |
650 | |
651 | (defvar mailcap-viewer-test-cache nil) | |
652 | ||
653 | (defun mailcap-viewer-passes-test (viewer-info type-info) | |
e7f767c2 | 654 | "Return non-nil if viewer specified by VIEWER-INFO passes its test clause. |
23f87bed | 655 | Also return non-nil if it has no test clause. TYPE-INFO is an argument |
c0393b5e | 656 | to supply to the test." |
c113de23 GM |
657 | (let* ((test-info (assq 'test viewer-info)) |
658 | (test (cdr test-info)) | |
659 | (otest test) | |
660 | (viewer (cdr (assoc 'viewer viewer-info))) | |
661 | (default-directory (expand-file-name "~/")) | |
662 | status parsed-test cache result) | |
46e8fe3d MB |
663 | (cond ((setq cache (assoc test mailcap-viewer-test-cache)) |
664 | (cadr cache)) | |
665 | ((not test-info) t) ; No test clause | |
666 | (t | |
667 | (setq | |
668 | result | |
669 | (cond | |
670 | ((not test) nil) ; Already failed test | |
671 | ((eq test t) t) ; Already passed test | |
672 | ((functionp test) ; Lisp function as test | |
673 | (funcall test type-info)) | |
674 | ((and (symbolp test) ; Lisp variable as test | |
675 | (boundp test)) | |
676 | (symbol-value test)) | |
677 | ((and (listp test) ; List to be eval'd | |
678 | (symbolp (car test))) | |
679 | (eval test)) | |
680 | (t | |
681 | (setq test (mailcap-unescape-mime-test test type-info) | |
682 | test (list shell-file-name nil nil nil | |
683 | shell-command-switch test) | |
684 | status (apply 'call-process test)) | |
685 | (eq 0 status)))) | |
686 | (push (list otest result) mailcap-viewer-test-cache) | |
687 | result)))) | |
c113de23 GM |
688 | |
689 | (defun mailcap-add-mailcap-entry (major minor info) | |
690 | (let ((old-major (assoc major mailcap-mime-data))) | |
691 | (if (null old-major) ; New major area | |
692 | (setq mailcap-mime-data | |
693 | (cons (cons major (list (cons minor info))) | |
694 | mailcap-mime-data)) | |
23f87bed MB |
695 | (let ((cur-minor (assoc minor old-major))) |
696 | (cond | |
697 | ((or (null cur-minor) ; New minor area, or | |
698 | (assq 'test info)) ; Has a test, insert at beginning | |
699 | (setcdr old-major (cons (cons minor info) (cdr old-major)))) | |
700 | ((and (not (assq 'test info)) ; No test info, replace completely | |
701 | (not (assq 'test cur-minor)) | |
c113de23 GM |
702 | (equal (assq 'viewer info) ; Keep alternative viewer |
703 | (assq 'viewer cur-minor))) | |
23f87bed MB |
704 | (setcdr cur-minor info)) |
705 | (t | |
706 | (setcdr old-major (cons (cons minor info) (cdr old-major)))))) | |
c113de23 GM |
707 | ))) |
708 | ||
709 | (defun mailcap-add (type viewer &optional test) | |
710 | "Add VIEWER as a handler for TYPE. | |
711 | If TEST is not given, it defaults to t." | |
712 | (let ((tl (split-string type "/"))) | |
713 | (when (or (not (car tl)) | |
714 | (not (cadr tl))) | |
715 | (error "%s is not a valid MIME type" type)) | |
716 | (mailcap-add-mailcap-entry | |
717 | (car tl) (cadr tl) | |
718 | `((viewer . ,viewer) | |
719 | (test . ,(if test test t)) | |
720 | (type . ,type))))) | |
721 | ||
722 | ;;; | |
723 | ;;; The main whabbo | |
724 | ;;; | |
725 | ||
726 | (defun mailcap-viewer-lessp (x y) | |
e7f767c2 | 727 | "Return t if viewer X is more desirable than viewer Y." |
c113de23 GM |
728 | (let ((x-wild (string-match "[*?]" (or (cdr-safe (assq 'type x)) ""))) |
729 | (y-wild (string-match "[*?]" (or (cdr-safe (assq 'type y)) ""))) | |
730 | (x-lisp (not (stringp (or (cdr-safe (assq 'viewer x)) "")))) | |
731 | (y-lisp (not (stringp (or (cdr-safe (assq 'viewer y)) ""))))) | |
732 | (cond | |
733 | ((and x-wild (not y-wild)) | |
734 | nil) | |
735 | ((and (not x-wild) y-wild) | |
736 | t) | |
737 | ((and (not y-lisp) x-lisp) | |
738 | t) | |
739 | (t nil)))) | |
740 | ||
b890d447 | 741 | (defun mailcap-mime-info (string &optional request no-decode) |
c113de23 GM |
742 | "Get the MIME viewer command for STRING, return nil if none found. |
743 | Expects a complete content-type header line as its argument. | |
744 | ||
745 | Second argument REQUEST specifies what information to return. If it is | |
746 | nil or the empty string, the viewer (second field of the mailcap | |
747 | entry) will be returned. If it is a string, then the mailcap field | |
748 | corresponding to that string will be returned (print, description, | |
749 | whatever). If a number, then all the information for this specific | |
750 | viewer is returned. If `all', then all possible viewers for | |
b890d447 MB |
751 | this type is returned. |
752 | ||
753 | If NO-DECODE is non-nil, don't decode STRING." | |
754 | ;; NO-DECODE avoids calling `mail-header-parse-content-type' from | |
755 | ;; `mail-parse.el' | |
c113de23 GM |
756 | (let ( |
757 | major ; Major encoding (text, etc) | |
758 | minor ; Minor encoding (html, etc) | |
759 | info ; Other info | |
760 | save-pos ; Misc. position during parse | |
761 | major-info ; (assoc major mailcap-mime-data) | |
762 | minor-info ; (assoc minor major-info) | |
763 | test ; current test proc. | |
764 | viewers ; Possible viewers | |
765 | passed ; Viewers that passed the test | |
766 | viewer ; The one and only viewer | |
767 | ctl) | |
768 | (save-excursion | |
b890d447 MB |
769 | (setq ctl |
770 | (if no-decode | |
771 | (list (or string "text/plain")) | |
772 | (mail-header-parse-content-type (or string "text/plain")))) | |
c113de23 GM |
773 | (setq major (split-string (car ctl) "/")) |
774 | (setq minor (cadr major) | |
775 | major (car major)) | |
776 | (when (setq major-info (cdr (assoc major mailcap-mime-data))) | |
777 | (when (setq viewers (mailcap-possible-viewers major-info minor)) | |
778 | (setq info (mapcar (lambda (a) (cons (symbol-name (car a)) | |
779 | (cdr a))) | |
780 | (cdr ctl))) | |
781 | (while viewers | |
782 | (if (mailcap-viewer-passes-test (car viewers) info) | |
783 | (setq passed (cons (car viewers) passed))) | |
784 | (setq viewers (cdr viewers))) | |
785 | (setq passed (sort passed 'mailcap-viewer-lessp)) | |
786 | (setq viewer (car passed)))) | |
787 | (when (and (stringp (cdr (assq 'viewer viewer))) | |
788 | passed) | |
789 | (setq viewer (car passed))) | |
790 | (cond | |
791 | ((and (null viewer) (not (equal major "default")) request) | |
b890d447 | 792 | (mailcap-mime-info "default" request no-decode)) |
c113de23 GM |
793 | ((or (null request) (equal request "")) |
794 | (mailcap-unescape-mime-test (cdr (assq 'viewer viewer)) info)) | |
795 | ((stringp request) | |
23f87bed MB |
796 | (mailcap-unescape-mime-test |
797 | (cdr-safe (assoc request viewer)) info)) | |
c113de23 GM |
798 | ((eq request 'all) |
799 | passed) | |
800 | (t | |
801 | ;; MUST make a copy *sigh*, else we modify mailcap-mime-data | |
802 | (setq viewer (copy-sequence viewer)) | |
803 | (let ((view (assq 'viewer viewer)) | |
804 | (test (assq 'test viewer))) | |
805 | (if view (setcdr view (mailcap-unescape-mime-test (cdr view) info))) | |
806 | (if test (setcdr test (mailcap-unescape-mime-test (cdr test) info)))) | |
807 | viewer))))) | |
808 | ||
809 | ;;; | |
810 | ;;; Experimental MIME-types parsing | |
811 | ;;; | |
812 | ||
813 | (defvar mailcap-mime-extensions | |
a3f57c41 G |
814 | '(("" . "text/plain") |
815 | (".1" . "text/plain") ;; Manual pages | |
816 | (".3" . "text/plain") | |
817 | (".8" . "text/plain") | |
c0393b5e DL |
818 | (".abs" . "audio/x-mpeg") |
819 | (".aif" . "audio/aiff") | |
820 | (".aifc" . "audio/aiff") | |
821 | (".aiff" . "audio/aiff") | |
822 | (".ano" . "application/x-annotator") | |
823 | (".au" . "audio/ulaw") | |
824 | (".avi" . "video/x-msvideo") | |
825 | (".bcpio" . "application/x-bcpio") | |
826 | (".bin" . "application/octet-stream") | |
827 | (".cdf" . "application/x-netcdr") | |
828 | (".cpio" . "application/x-cpio") | |
829 | (".csh" . "application/x-csh") | |
830 | (".css" . "text/css") | |
831 | (".dvi" . "application/x-dvi") | |
832 | (".diff" . "text/x-patch") | |
a3f57c41 | 833 | (".dpatch". "test/x-patch") |
c0393b5e DL |
834 | (".el" . "application/emacs-lisp") |
835 | (".eps" . "application/postscript") | |
836 | (".etx" . "text/x-setext") | |
837 | (".exe" . "application/octet-stream") | |
838 | (".fax" . "image/x-fax") | |
839 | (".gif" . "image/gif") | |
840 | (".hdf" . "application/x-hdf") | |
841 | (".hqx" . "application/mac-binhex40") | |
842 | (".htm" . "text/html") | |
843 | (".html" . "text/html") | |
844 | (".icon" . "image/x-icon") | |
845 | (".ief" . "image/ief") | |
846 | (".jpg" . "image/jpeg") | |
847 | (".macp" . "image/x-macpaint") | |
848 | (".man" . "application/x-troff-man") | |
849 | (".me" . "application/x-troff-me") | |
850 | (".mif" . "application/mif") | |
851 | (".mov" . "video/quicktime") | |
852 | (".movie" . "video/x-sgi-movie") | |
853 | (".mp2" . "audio/x-mpeg") | |
854 | (".mp3" . "audio/x-mpeg") | |
855 | (".mp2a" . "audio/x-mpeg2") | |
856 | (".mpa" . "audio/x-mpeg") | |
857 | (".mpa2" . "audio/x-mpeg2") | |
858 | (".mpe" . "video/mpeg") | |
859 | (".mpeg" . "video/mpeg") | |
860 | (".mpega" . "audio/x-mpeg") | |
861 | (".mpegv" . "video/mpeg") | |
862 | (".mpg" . "video/mpeg") | |
863 | (".mpv" . "video/mpeg") | |
864 | (".ms" . "application/x-troff-ms") | |
865 | (".nc" . "application/x-netcdf") | |
866 | (".nc" . "application/x-netcdf") | |
867 | (".oda" . "application/oda") | |
868 | (".patch" . "text/x-patch") | |
869 | (".pbm" . "image/x-portable-bitmap") | |
870 | (".pdf" . "application/pdf") | |
871 | (".pgm" . "image/portable-graymap") | |
872 | (".pict" . "image/pict") | |
873 | (".png" . "image/png") | |
874 | (".pnm" . "image/x-portable-anymap") | |
a3f57c41 | 875 | (".pod" . "text/plain") |
c0393b5e DL |
876 | (".ppm" . "image/portable-pixmap") |
877 | (".ps" . "application/postscript") | |
878 | (".qt" . "video/quicktime") | |
879 | (".ras" . "image/x-raster") | |
880 | (".rgb" . "image/x-rgb") | |
881 | (".rtf" . "application/rtf") | |
882 | (".rtx" . "text/richtext") | |
883 | (".sh" . "application/x-sh") | |
884 | (".sit" . "application/x-stuffit") | |
23f87bed | 885 | (".siv" . "application/sieve") |
c0393b5e | 886 | (".snd" . "audio/basic") |
01c52d31 | 887 | (".soa" . "text/dns") |
c0393b5e DL |
888 | (".src" . "application/x-wais-source") |
889 | (".tar" . "archive/tar") | |
890 | (".tcl" . "application/x-tcl") | |
891 | (".tex" . "application/x-tex") | |
892 | (".texi" . "application/texinfo") | |
893 | (".tga" . "image/x-targa") | |
894 | (".tif" . "image/tiff") | |
895 | (".tiff" . "image/tiff") | |
896 | (".tr" . "application/x-troff") | |
897 | (".troff" . "application/x-troff") | |
898 | (".tsv" . "text/tab-separated-values") | |
899 | (".txt" . "text/plain") | |
900 | (".vbs" . "video/mpeg") | |
901 | (".vox" . "audio/basic") | |
902 | (".vrml" . "x-world/x-vrml") | |
903 | (".wav" . "audio/x-wav") | |
23f87bed | 904 | (".xls" . "application/vnd.ms-excel") |
c0393b5e DL |
905 | (".wrl" . "x-world/x-vrml") |
906 | (".xbm" . "image/xbm") | |
907 | (".xpm" . "image/xpm") | |
908 | (".xwd" . "image/windowdump") | |
909 | (".zip" . "application/zip") | |
910 | (".ai" . "application/postscript") | |
911 | (".jpe" . "image/jpeg") | |
6e3165fb | 912 | (".jpeg" . "image/jpeg") |
9e928ac9 | 913 | (".org" . "text/x-org")) |
c0393b5e DL |
914 | "An alist of file extensions and corresponding MIME content-types. |
915 | This exists for you to customize the information in Lisp. It is | |
916 | merged with values from mailcap files by `mailcap-parse-mimetypes'.") | |
c113de23 GM |
917 | |
918 | (defvar mailcap-mimetypes-parsed-p nil) | |
919 | ||
920 | (defun mailcap-parse-mimetypes (&optional path force) | |
c0393b5e | 921 | "Parse out all the mimetypes specified in a Unix-style path string PATH. |
c113de23 GM |
922 | Components of PATH are separated by the `path-separator' character |
923 | appropriate for this system. If PATH is omitted, use the value of | |
924 | environment variable MIMETYPES if set; otherwise use a default path. | |
925 | If FORCE, re-parse even if already parsed." | |
926 | (interactive (list nil t)) | |
927 | (when (or (not mailcap-mimetypes-parsed-p) | |
928 | force) | |
929 | (cond | |
930 | (path nil) | |
931 | ((getenv "MIMETYPES") (setq path (getenv "MIMETYPES"))) | |
23f87bed | 932 | ((memq system-type mailcap-poor-system-types) |
c113de23 GM |
933 | (setq path '("~/mime.typ" "~/etc/mime.typ"))) |
934 | (t (setq path | |
935 | ;; mime.types seems to be the normal name, definitely so | |
936 | ;; on current GNUish systems. The search order follows | |
937 | ;; that for mailcap. | |
938 | '("~/.mime.types" | |
939 | "/etc/mime.types" | |
940 | "/usr/etc/mime.types" | |
941 | "/usr/local/etc/mime.types" | |
942 | "/usr/local/www/conf/mime.types" | |
943 | "~/.mime-types" | |
944 | "/etc/mime-types" | |
945 | "/usr/etc/mime-types" | |
946 | "/usr/local/etc/mime-types" | |
947 | "/usr/local/www/conf/mime-types")))) | |
948 | (let ((fnames (reverse (if (stringp path) | |
4def29e7 | 949 | (split-string path path-separator t) |
c113de23 GM |
950 | path))) |
951 | fname) | |
952 | (while fnames | |
953 | (setq fname (car fnames)) | |
954 | (if (and (file-readable-p fname)) | |
955 | (mailcap-parse-mimetype-file fname)) | |
956 | (setq fnames (cdr fnames)))) | |
957 | (setq mailcap-mimetypes-parsed-p t))) | |
958 | ||
959 | (defun mailcap-parse-mimetype-file (fname) | |
c0393b5e | 960 | "Parse out a mime-types file FNAME." |
c113de23 GM |
961 | (let (type ; The MIME type for this line |
962 | extns ; The extensions for this line | |
963 | save-pos ; Misc. saved buffer positions | |
964 | ) | |
965 | (with-temp-buffer | |
966 | (insert-file-contents fname) | |
967 | (mailcap-replace-regexp "#.*" "") | |
968 | (mailcap-replace-regexp "\n+" "\n") | |
969 | (mailcap-replace-regexp "[ \t]+$" "") | |
970 | (goto-char (point-max)) | |
971 | (skip-chars-backward " \t\n") | |
972 | (delete-region (point) (point-max)) | |
973 | (goto-char (point-min)) | |
974 | (while (not (eobp)) | |
975 | (skip-chars-forward " \t\n") | |
976 | (setq save-pos (point)) | |
977 | (skip-chars-forward "^ \t\n") | |
978 | (downcase-region save-pos (point)) | |
979 | (setq type (buffer-substring save-pos (point))) | |
980 | (while (not (eolp)) | |
981 | (skip-chars-forward " \t") | |
982 | (setq save-pos (point)) | |
983 | (skip-chars-forward "^ \t\n") | |
984 | (setq extns (cons (buffer-substring save-pos (point)) extns))) | |
985 | (while extns | |
986 | (setq mailcap-mime-extensions | |
987 | (cons | |
988 | (cons (if (= (string-to-char (car extns)) ?.) | |
989 | (car extns) | |
990 | (concat "." (car extns))) type) | |
991 | mailcap-mime-extensions) | |
992 | extns (cdr extns))))))) | |
993 | ||
994 | (defun mailcap-extension-to-mime (extn) | |
995 | "Return the MIME content type of the file extensions EXTN." | |
996 | (mailcap-parse-mimetypes) | |
997 | (if (and (stringp extn) | |
998 | (not (eq (string-to-char extn) ?.))) | |
999 | (setq extn (concat "." extn))) | |
1000 | (cdr (assoc (downcase extn) mailcap-mime-extensions))) | |
1001 | ||
c0393b5e DL |
1002 | ;; Unused? |
1003 | (defalias 'mailcap-command-p 'executable-find) | |
c113de23 GM |
1004 | |
1005 | (defun mailcap-mime-types () | |
1006 | "Return a list of MIME media types." | |
1007 | (mailcap-parse-mimetypes) | |
b890d447 | 1008 | (mailcap-delete-duplicates |
9b198954 DL |
1009 | (nconc |
1010 | (mapcar 'cdr mailcap-mime-extensions) | |
1011 | (apply | |
1012 | 'nconc | |
1013 | (mapcar | |
1014 | (lambda (l) | |
1015 | (delq nil | |
1016 | (mapcar | |
1017 | (lambda (m) | |
1018 | (let ((type (cdr (assq 'type (cdr m))))) | |
1019 | (if (equal (cadr (split-string type "/")) | |
1020 | "*") | |
1021 | nil | |
1022 | type))) | |
1023 | (cdr l)))) | |
1024 | mailcap-mime-data))))) | |
c113de23 | 1025 | |
a837fe74 JL |
1026 | ;;; |
1027 | ;;; Useful supplementary functions | |
1028 | ;;; | |
1029 | ||
1030 | (defun mailcap-file-default-commands (files) | |
1031 | "Return a list of default commands for FILES." | |
1032 | (mailcap-parse-mailcaps) | |
1033 | (mailcap-parse-mimetypes) | |
1034 | (let* ((all-mime-type | |
1035 | ;; All unique MIME types from file extensions | |
d844ef2f JL |
1036 | (mailcap-delete-duplicates |
1037 | (mapcar (lambda (file) | |
1038 | (mailcap-extension-to-mime | |
1039 | (file-name-extension file t))) | |
1040 | files))) | |
a837fe74 JL |
1041 | (all-mime-info |
1042 | ;; All MIME info lists | |
d844ef2f JL |
1043 | (mailcap-delete-duplicates |
1044 | (mapcar (lambda (mime-type) | |
1045 | (mailcap-mime-info mime-type 'all)) | |
1046 | all-mime-type))) | |
a837fe74 JL |
1047 | (common-mime-info |
1048 | ;; Intersection of mime-infos from different mime-types; | |
1049 | ;; or just the first MIME info for a single MIME type | |
1050 | (if (cdr all-mime-info) | |
1051 | (delq nil (mapcar (lambda (mi1) | |
1052 | (unless (memq nil (mapcar | |
1053 | (lambda (mi2) | |
1054 | (member mi1 mi2)) | |
1055 | (cdr all-mime-info))) | |
1056 | mi1)) | |
1057 | (car all-mime-info))) | |
1058 | (car all-mime-info))) | |
1059 | (commands | |
1060 | ;; Command strings from `viewer' field of the MIME info | |
d844ef2f | 1061 | (mailcap-delete-duplicates |
a837fe74 JL |
1062 | (delq nil (mapcar (lambda (mime-info) |
1063 | (let ((command (cdr (assoc 'viewer mime-info)))) | |
1064 | (if (stringp command) | |
d844ef2f | 1065 | (mailcap-replace-in-string |
a837fe74 JL |
1066 | ;; Replace mailcap's `%s' placeholder |
1067 | ;; with dired's `?' placeholder | |
d844ef2f | 1068 | (mailcap-replace-in-string |
a837fe74 | 1069 | ;; Remove the final filename placeholder |
d844ef2f JL |
1070 | command "[ \t\n]*\\('\\)?%s\\1?[ \t\n]*\\'" "" t) |
1071 | "%s" "?" t)))) | |
a837fe74 JL |
1072 | common-mime-info))))) |
1073 | commands)) | |
1074 | ||
c113de23 GM |
1075 | (provide 'mailcap) |
1076 | ||
1077 | ;;; mailcap.el ends here |