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c0393b5e | 1 | ;;; mailcap.el --- MIME media types configuration |
e84b4b86 TTN |
2 | |
3 | ;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004, | |
5df4f04c | 4 | ;; 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. |
c113de23 GM |
5 | |
6 | ;; Author: William M. Perry <wmperry@aventail.com> | |
7 | ;; Lars Magne Ingebrigtsen <larsi@gnus.org> | |
c0393b5e | 8 | ;; Keywords: news, mail, multimedia |
c113de23 GM |
9 | |
10 | ;; This file is part of GNU Emacs. | |
11 | ||
5e809f55 | 12 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
c113de23 | 13 | ;; it under the terms of the GNU General Public License as published by |
5e809f55 GM |
14 | ;; the Free Software Foundation, either version 3 of the License, or |
15 | ;; (at your option) any later version. | |
c113de23 GM |
16 | |
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
5e809f55 | 19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
c113de23 GM |
20 | ;; GNU General Public License for more details. |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
5e809f55 | 23 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
c113de23 GM |
24 | |
25 | ;;; Commentary: | |
26 | ||
c0393b5e DL |
27 | ;; Provides configuration of MIME media types from directly from Lisp |
28 | ;; and via the usual mailcap mechanism (RFC 1524). Deals with | |
29 | ;; mime.types similarly. | |
30 | ||
c113de23 GM |
31 | ;;; Code: |
32 | ||
33 | (eval-when-compile (require 'cl)) | |
b890d447 MB |
34 | (autoload 'mail-header-parse-content-type "mail-parse") |
35 | ||
36 | ;; `mm-delete-duplicates' is an alias for `delete-dups' in Emacs 22. | |
37 | (defalias 'mailcap-delete-duplicates | |
38 | (if (fboundp 'delete-dups) | |
39 | 'delete-dups | |
40 | (autoload 'mm-delete-duplicates "mm-util") | |
41 | 'mm-delete-duplicates)) | |
c113de23 | 42 | |
d844ef2f JL |
43 | ;; `mailcap-replace-in-string' is an alias like `gnus-replace-in-string'. |
44 | (eval-and-compile | |
45 | (cond | |
46 | ((fboundp 'replace-regexp-in-string) | |
47 | (defun mailcap-replace-in-string (string regexp newtext &optional literal) | |
48 | "Replace all matches for REGEXP with NEWTEXT in STRING. | |
49 | If LITERAL is non-nil, insert NEWTEXT literally. Return a new | |
50 | string containing the replacements. | |
51 | This is a compatibility function for different Emacsen." | |
52 | (replace-regexp-in-string regexp newtext string nil literal))) | |
53 | ((fboundp 'replace-in-string) | |
54 | (defalias 'mailcap-replace-in-string 'replace-in-string)))) | |
55 | ||
c0393b5e DL |
56 | (defgroup mailcap nil |
57 | "Definition of viewers for MIME types." | |
58 | :version "21.1" | |
59 | :group 'mime) | |
60 | ||
c113de23 GM |
61 | (defvar mailcap-parse-args-syntax-table |
62 | (let ((table (copy-syntax-table emacs-lisp-mode-syntax-table))) | |
63 | (modify-syntax-entry ?' "\"" table) | |
64 | (modify-syntax-entry ?` "\"" table) | |
65 | (modify-syntax-entry ?{ "(" table) | |
66 | (modify-syntax-entry ?} ")" table) | |
67 | table) | |
23f87bed MB |
68 | "A syntax table for parsing SGML attributes.") |
69 | ||
70 | (eval-and-compile | |
71 | (when (featurep 'xemacs) | |
72 | (condition-case nil | |
73 | (require 'lpr) | |
74 | (error nil)))) | |
75 | ||
76 | (defvar mailcap-print-command | |
77 | (mapconcat 'identity | |
78 | (cons (if (boundp 'lpr-command) | |
79 | lpr-command | |
80 | "lpr") | |
81 | (when (boundp 'lpr-switches) | |
82 | (if (stringp lpr-switches) | |
83 | (list lpr-switches) | |
84 | lpr-switches))) | |
85 | " ") | |
86 | "Shell command (including switches) used to print Postscript files.") | |
c113de23 | 87 | |
c0393b5e DL |
88 | ;; Postpone using defcustom for this as it's so big and we essentially |
89 | ;; have to have two copies of the data around then. Perhaps just | |
90 | ;; customize the Lisp viewers and rely on the normal configuration | |
91 | ;; files for the rest? -- fx | |
c113de23 | 92 | (defvar mailcap-mime-data |
23f87bed MB |
93 | `(("application" |
94 | ("vnd.ms-excel" | |
95 | (viewer . "gnumeric %s") | |
96 | (test . (getenv "DISPLAY")) | |
97 | (type . "application/vnd.ms-excel")) | |
c113de23 GM |
98 | ("x-x509-ca-cert" |
99 | (viewer . ssl-view-site-cert) | |
100 | (test . (fboundp 'ssl-view-site-cert)) | |
101 | (type . "application/x-x509-ca-cert")) | |
102 | ("x-x509-user-cert" | |
103 | (viewer . ssl-view-user-cert) | |
104 | (test . (fboundp 'ssl-view-user-cert)) | |
105 | (type . "application/x-x509-user-cert")) | |
106 | ("octet-stream" | |
107 | (viewer . mailcap-save-binary-file) | |
108 | (non-viewer . t) | |
109 | (type . "application/octet-stream")) | |
c113de23 | 110 | ("dvi" |
23f87bed MB |
111 | (viewer . "xdvi -safer %s") |
112 | (test . (eq window-system 'x)) | |
c113de23 | 113 | ("needsx11") |
23f87bed MB |
114 | (type . "application/dvi") |
115 | ("print" . "dvips -qRP %s")) | |
c113de23 GM |
116 | ("dvi" |
117 | (viewer . "dvitty %s") | |
118 | (test . (not (getenv "DISPLAY"))) | |
23f87bed MB |
119 | (type . "application/dvi") |
120 | ("print" . "dvips -qRP %s")) | |
c113de23 GM |
121 | ("emacs-lisp" |
122 | (viewer . mailcap-maybe-eval) | |
123 | (type . "application/emacs-lisp")) | |
23f87bed MB |
124 | ("x-emacs-lisp" |
125 | (viewer . mailcap-maybe-eval) | |
126 | (type . "application/x-emacs-lisp")) | |
c113de23 GM |
127 | ("x-tar" |
128 | (viewer . mailcap-save-binary-file) | |
129 | (non-viewer . t) | |
130 | (type . "application/x-tar")) | |
131 | ("x-latex" | |
132 | (viewer . tex-mode) | |
133 | (test . (fboundp 'tex-mode)) | |
134 | (type . "application/x-latex")) | |
135 | ("x-tex" | |
136 | (viewer . tex-mode) | |
137 | (test . (fboundp 'tex-mode)) | |
138 | (type . "application/x-tex")) | |
139 | ("latex" | |
140 | (viewer . tex-mode) | |
141 | (test . (fboundp 'tex-mode)) | |
142 | (type . "application/latex")) | |
143 | ("tex" | |
144 | (viewer . tex-mode) | |
145 | (test . (fboundp 'tex-mode)) | |
146 | (type . "application/tex")) | |
147 | ("texinfo" | |
148 | (viewer . texinfo-mode) | |
149 | (test . (fboundp 'texinfo-mode)) | |
150 | (type . "application/tex")) | |
151 | ("zip" | |
152 | (viewer . mailcap-save-binary-file) | |
153 | (non-viewer . t) | |
154 | (type . "application/zip") | |
155 | ("copiousoutput")) | |
c0393b5e | 156 | ("pdf" |
23f87bed | 157 | (viewer . "gv -safer %s") |
c0393b5e | 158 | (type . "application/pdf") |
23f87bed MB |
159 | (test . window-system) |
160 | ("print" . ,(concat "pdf2ps %s - | " mailcap-print-command))) | |
c0393b5e | 161 | ("pdf" |
f0096211 | 162 | (viewer . "gpdf %s") |
c0393b5e | 163 | (type . "application/pdf") |
23f87bed MB |
164 | ("print" . ,(concat "pdftops %s - | " mailcap-print-command)) |
165 | (test . (eq window-system 'x))) | |
c113de23 | 166 | ("pdf" |
f0096211 MB |
167 | (viewer . "xpdf %s") |
168 | (type . "application/pdf") | |
169 | ("print" . ,(concat "pdftops %s - | " mailcap-print-command)) | |
170 | (test . (eq window-system 'x))) | |
23f87bed MB |
171 | ("pdf" |
172 | (viewer . ,(concat "pdftotext %s -")) | |
173 | (type . "application/pdf") | |
174 | ("print" . ,(concat "pdftops %s - | " mailcap-print-command)) | |
175 | ("copiousoutput")) | |
c113de23 | 176 | ("postscript" |
c0393b5e DL |
177 | (viewer . "gv -safer %s") |
178 | (type . "application/postscript") | |
179 | (test . window-system) | |
23f87bed | 180 | ("print" . ,(concat mailcap-print-command " %s")) |
c0393b5e | 181 | ("needsx11")) |
c113de23 GM |
182 | ("postscript" |
183 | (viewer . "ghostview -dSAFER %s") | |
184 | (type . "application/postscript") | |
23f87bed MB |
185 | (test . (eq window-system 'x)) |
186 | ("print" . ,(concat mailcap-print-command " %s")) | |
c113de23 GM |
187 | ("needsx11")) |
188 | ("postscript" | |
189 | (viewer . "ps2ascii %s") | |
190 | (type . "application/postscript") | |
191 | (test . (not (getenv "DISPLAY"))) | |
23f87bed MB |
192 | ("print" . ,(concat mailcap-print-command " %s")) |
193 | ("copiousoutput")) | |
194 | ("sieve" | |
195 | (viewer . sieve-mode) | |
196 | (test . (fboundp 'sieve-mode)) | |
197 | (type . "application/sieve")) | |
198 | ("pgp-keys" | |
199 | (viewer . "gpg --import --interactive --verbose") | |
200 | (type . "application/pgp-keys") | |
201 | ("needsterminal"))) | |
c113de23 GM |
202 | ("audio" |
203 | ("x-mpeg" | |
204 | (viewer . "maplay %s") | |
205 | (type . "audio/x-mpeg")) | |
206 | (".*" | |
207 | (viewer . "showaudio") | |
208 | (type . "audio/*"))) | |
209 | ("message" | |
210 | ("rfc-*822" | |
211 | (viewer . mm-view-message) | |
212 | (test . (and (featurep 'gnus) | |
213 | (gnus-alive-p))) | |
214 | (type . "message/rfc822")) | |
215 | ("rfc-*822" | |
216 | (viewer . vm-mode) | |
217 | (test . (fboundp 'vm-mode)) | |
218 | (type . "message/rfc822")) | |
219 | ("rfc-*822" | |
220 | (viewer . w3-mode) | |
221 | (test . (fboundp 'w3-mode)) | |
222 | (type . "message/rfc822")) | |
223 | ("rfc-*822" | |
224 | (viewer . view-mode) | |
c113de23 GM |
225 | (type . "message/rfc822"))) |
226 | ("image" | |
227 | ("x-xwd" | |
228 | (viewer . "xwud -in %s") | |
229 | (type . "image/x-xwd") | |
230 | ("compose" . "xwd -frame > %s") | |
23f87bed | 231 | (test . (eq window-system 'x)) |
c113de23 GM |
232 | ("needsx11")) |
233 | ("x11-dump" | |
234 | (viewer . "xwud -in %s") | |
235 | (type . "image/x-xwd") | |
236 | ("compose" . "xwd -frame > %s") | |
23f87bed | 237 | (test . (eq window-system 'x)) |
c113de23 GM |
238 | ("needsx11")) |
239 | ("windowdump" | |
240 | (viewer . "xwud -in %s") | |
241 | (type . "image/x-xwd") | |
242 | ("compose" . "xwd -frame > %s") | |
23f87bed | 243 | (test . (eq window-system 'x)) |
c113de23 | 244 | ("needsx11")) |
c113de23 GM |
245 | (".*" |
246 | (viewer . "display %s") | |
247 | (type . "image/*") | |
23f87bed | 248 | (test . (eq window-system 'x)) |
c113de23 GM |
249 | ("needsx11")) |
250 | (".*" | |
251 | (viewer . "ee %s") | |
252 | (type . "image/*") | |
23f87bed | 253 | (test . (eq window-system 'x)) |
c113de23 GM |
254 | ("needsx11"))) |
255 | ("text" | |
256 | ("plain" | |
257 | (viewer . w3-mode) | |
258 | (test . (fboundp 'w3-mode)) | |
259 | (type . "text/plain")) | |
260 | ("plain" | |
261 | (viewer . view-mode) | |
262 | (test . (fboundp 'view-mode)) | |
263 | (type . "text/plain")) | |
264 | ("plain" | |
265 | (viewer . fundamental-mode) | |
266 | (type . "text/plain")) | |
267 | ("enriched" | |
23f87bed | 268 | (viewer . enriched-decode) |
c113de23 GM |
269 | (test . (fboundp 'enriched-decode)) |
270 | (type . "text/enriched")) | |
271 | ("html" | |
272 | (viewer . mm-w3-prepare-buffer) | |
273 | (test . (fboundp 'w3-prepare-buffer)) | |
01c52d31 MB |
274 | (type . "text/html")) |
275 | ("dns" | |
276 | (viewer . dns-mode) | |
277 | (test . (fboundp 'dns-mode)) | |
278 | (type . "text/dns"))) | |
c113de23 GM |
279 | ("video" |
280 | ("mpeg" | |
281 | (viewer . "mpeg_play %s") | |
282 | (type . "video/mpeg") | |
23f87bed | 283 | (test . (eq window-system 'x)) |
c113de23 GM |
284 | ("needsx11"))) |
285 | ("x-world" | |
286 | ("x-vrml" | |
287 | (viewer . "webspace -remote %s -URL %u") | |
288 | (type . "x-world/x-vrml") | |
289 | ("description" | |
290 | "VRML document"))) | |
291 | ("archive" | |
292 | ("tar" | |
293 | (viewer . tar-mode) | |
294 | (type . "archive/tar") | |
295 | (test . (fboundp 'tar-mode))))) | |
296 | "The mailcap structure is an assoc list of assoc lists. | |
297 | 1st assoc list is keyed on the major content-type | |
298 | 2nd assoc list is keyed on the minor content-type (which can be a regexp) | |
299 | ||
300 | Which looks like: | |
301 | ----------------- | |
302 | ((\"application\" | |
303 | (\"postscript\" . <info>)) | |
304 | (\"text\" | |
305 | (\"plain\" . <info>))) | |
306 | ||
307 | Where <info> is another assoc list of the various information | |
c0393b5e | 308 | related to the mailcap RFC 1524. This is keyed on the lowercase |
c113de23 | 309 | attribute name (viewer, test, etc). This looks like: |
c0393b5e DL |
310 | ((viewer . VIEWERINFO) |
311 | (test . TESTINFO) | |
312 | (xxxx . \"STRING\") | |
313 | FLAG) | |
c113de23 | 314 | |
c0393b5e | 315 | Where VIEWERINFO specifies how the content-type is viewed. Can be |
c113de23 GM |
316 | a string, in which case it is run through a shell, with |
317 | appropriate parameters, or a symbol, in which case the symbol is | |
c0393b5e DL |
318 | `funcall'ed, with the buffer as an argument. |
319 | ||
320 | TESTINFO is a test for the viewer's applicability, or nil. If nil, it | |
321 | means the viewer is always valid. If it is a Lisp function, it is | |
322 | called with a list of items from any extra fields from the | |
323 | Content-Type header as argument to return a boolean value for the | |
324 | validity. Otherwise, if it is a non-function Lisp symbol or list | |
325 | whose car is a symbol, it is `eval'led to yield the validity. If it | |
326 | is a string or list of strings, it represents a shell command to run | |
327 | to return a true or false shell value for the validity.") | |
f8bbbafb | 328 | (put 'mailcap-mime-data 'risky-local-variable t) |
c0393b5e DL |
329 | |
330 | (defcustom mailcap-download-directory nil | |
003dabb7 | 331 | "*Directory to which `mailcap-save-binary-file' downloads files by default. |
f0529b5b | 332 | nil means your home directory." |
003dabb7 DL |
333 | :type '(choice (const :tag "Home directory" nil) |
334 | directory) | |
c0393b5e | 335 | :group 'mailcap) |
c113de23 | 336 | |
23f87bed | 337 | (defvar mailcap-poor-system-types |
f5ec697d | 338 | '(ms-dos windows-nt) |
23f87bed MB |
339 | "Systems that don't have a Unix-like directory hierarchy.") |
340 | ||
c113de23 GM |
341 | ;;; |
342 | ;;; Utility functions | |
343 | ;;; | |
344 | ||
c113de23 GM |
345 | (defun mailcap-save-binary-file () |
346 | (goto-char (point-min)) | |
347 | (unwind-protect | |
348 | (let ((file (read-file-name | |
349 | "Filename to save as: " | |
350 | (or mailcap-download-directory "~/"))) | |
351 | (require-final-newline nil)) | |
352 | (write-region (point-min) (point-max) file)) | |
353 | (kill-buffer (current-buffer)))) | |
354 | ||
355 | (defvar mailcap-maybe-eval-warning | |
356 | "*** WARNING *** | |
357 | ||
c0393b5e | 358 | This MIME part contains untrusted and possibly harmful content. |
c113de23 GM |
359 | If you evaluate the Emacs Lisp code contained in it, a lot of nasty |
360 | things can happen. Please examine the code very carefully before you | |
361 | instruct Emacs to evaluate it. You can browse the buffer containing | |
362 | the code using \\[scroll-other-window]. | |
363 | ||
364 | If you are unsure what to do, please answer \"no\"." | |
365 | "Text of warning message displayed by `mailcap-maybe-eval'. | |
366 | Make sure that this text consists only of few text lines. Otherwise, | |
367 | Gnus might fail to display all of it.") | |
a1506d29 | 368 | |
c113de23 | 369 | (defun mailcap-maybe-eval () |
c0393b5e | 370 | "Maybe evaluate a buffer of Emacs Lisp code." |
c113de23 GM |
371 | (let ((lisp-buffer (current-buffer))) |
372 | (goto-char (point-min)) | |
373 | (when | |
374 | (save-window-excursion | |
375 | (delete-other-windows) | |
376 | (let ((buffer (get-buffer-create (generate-new-buffer-name | |
377 | "*Warning*")))) | |
378 | (unwind-protect | |
379 | (with-current-buffer buffer | |
c0393b5e | 380 | (insert (substitute-command-keys |
c113de23 GM |
381 | mailcap-maybe-eval-warning)) |
382 | (goto-char (point-min)) | |
383 | (display-buffer buffer) | |
384 | (yes-or-no-p "This is potentially dangerous emacs-lisp code, evaluate it? ")) | |
385 | (kill-buffer buffer)))) | |
386 | (eval-buffer (current-buffer))) | |
387 | (when (buffer-live-p lisp-buffer) | |
388 | (with-current-buffer lisp-buffer | |
389 | (emacs-lisp-mode))))) | |
390 | ||
391 | ||
392 | ;;; | |
393 | ;;; The mailcap parser | |
394 | ;;; | |
395 | ||
396 | (defun mailcap-replace-regexp (regexp to-string) | |
397 | ;; Quiet replace-regexp. | |
398 | (goto-char (point-min)) | |
399 | (while (re-search-forward regexp nil t) | |
400 | (replace-match to-string t nil))) | |
401 | ||
402 | (defvar mailcap-parsed-p nil) | |
403 | ||
404 | (defun mailcap-parse-mailcaps (&optional path force) | |
405 | "Parse out all the mailcaps specified in a path string PATH. | |
406 | Components of PATH are separated by the `path-separator' character | |
407 | appropriate for this system. If FORCE, re-parse even if already | |
408 | parsed. If PATH is omitted, use the value of environment variable | |
409 | MAILCAPS if set; otherwise (on Unix) use the path from RFC 1524, plus | |
410 | /usr/local/etc/mailcap." | |
411 | (interactive (list nil t)) | |
412 | (when (or (not mailcap-parsed-p) | |
413 | force) | |
414 | (cond | |
415 | (path nil) | |
416 | ((getenv "MAILCAPS") (setq path (getenv "MAILCAPS"))) | |
23f87bed | 417 | ((memq system-type mailcap-poor-system-types) |
c113de23 GM |
418 | (setq path '("~/.mailcap" "~/mail.cap" "~/etc/mail.cap"))) |
419 | (t (setq path | |
420 | ;; This is per RFC 1524, specifically | |
421 | ;; with /usr before /usr/local. | |
422 | '("~/.mailcap" "/etc/mailcap" "/usr/etc/mailcap" | |
423 | "/usr/local/etc/mailcap")))) | |
424 | (let ((fnames (reverse | |
425 | (if (stringp path) | |
4def29e7 | 426 | (split-string path path-separator t) |
c113de23 GM |
427 | path))) |
428 | fname) | |
429 | (while fnames | |
430 | (setq fname (car fnames)) | |
431 | (if (and (file-readable-p fname) | |
432 | (file-regular-p fname)) | |
433 | (mailcap-parse-mailcap fname)) | |
434 | (setq fnames (cdr fnames)))) | |
435 | (setq mailcap-parsed-p t))) | |
436 | ||
437 | (defun mailcap-parse-mailcap (fname) | |
c0393b5e | 438 | "Parse out the mailcap file specified by FNAME." |
c113de23 GM |
439 | (let (major ; The major mime type (image/audio/etc) |
440 | minor ; The minor mime type (gif, basic, etc) | |
441 | save-pos ; Misc saved positions used in parsing | |
442 | viewer ; How to view this mime type | |
443 | info ; Misc info about this mime type | |
444 | ) | |
445 | (with-temp-buffer | |
446 | (insert-file-contents fname) | |
447 | (set-syntax-table mailcap-parse-args-syntax-table) | |
448 | (mailcap-replace-regexp "#.*" "") ; Remove all comments | |
449 | (mailcap-replace-regexp "\\\\[ \t]*\n" " ") ; And collapse spaces | |
450 | (mailcap-replace-regexp "\n+" "\n") ; And blank lines | |
451 | (goto-char (point-max)) | |
452 | (skip-chars-backward " \t\n") | |
453 | (delete-region (point) (point-max)) | |
454 | (while (not (bobp)) | |
455 | (skip-chars-backward " \t\n") | |
456 | (beginning-of-line) | |
457 | (setq save-pos (point) | |
458 | info nil) | |
459 | (skip-chars-forward "^/; \t\n") | |
460 | (downcase-region save-pos (point)) | |
461 | (setq major (buffer-substring save-pos (point))) | |
462 | (skip-chars-forward " \t") | |
463 | (setq minor "") | |
464 | (when (eq (char-after) ?/) | |
465 | (forward-char) | |
466 | (skip-chars-forward " \t") | |
467 | (setq save-pos (point)) | |
468 | (skip-chars-forward "^; \t\n") | |
469 | (downcase-region save-pos (point)) | |
470 | (setq minor | |
471 | (cond | |
472 | ((eq ?* (or (char-after save-pos) 0)) ".*") | |
473 | ((= (point) save-pos) ".*") | |
474 | (t (regexp-quote (buffer-substring save-pos (point))))))) | |
475 | (skip-chars-forward " \t") | |
476 | ;;; Got the major/minor chunks, now for the viewers/etc | |
477 | ;;; The first item _must_ be a viewer, according to the | |
c0393b5e | 478 | ;;; RFC for mailcap files (#1524) |
c113de23 | 479 | (setq viewer "") |
c0393b5e | 480 | (when (eq (char-after) ?\;) |
c113de23 GM |
481 | (forward-char) |
482 | (skip-chars-forward " \t") | |
483 | (setq save-pos (point)) | |
484 | (skip-chars-forward "^;\n") | |
485 | ;; skip \; | |
486 | (while (eq (char-before) ?\\) | |
487 | (backward-delete-char 1) | |
488 | (forward-char) | |
489 | (skip-chars-forward "^;\n")) | |
490 | (if (eq (or (char-after save-pos) 0) ?') | |
491 | (setq viewer (progn | |
492 | (narrow-to-region (1+ save-pos) (point)) | |
493 | (goto-char (point-min)) | |
494 | (prog1 | |
495 | (read (current-buffer)) | |
496 | (goto-char (point-max)) | |
497 | (widen)))) | |
498 | (setq viewer (buffer-substring save-pos (point))))) | |
499 | (setq save-pos (point)) | |
500 | (end-of-line) | |
c0393b5e | 501 | (unless (equal viewer "") |
c113de23 GM |
502 | (setq info (nconc (list (cons 'viewer viewer) |
503 | (cons 'type (concat major "/" | |
504 | (if (string= minor ".*") | |
505 | "*" minor)))) | |
506 | (mailcap-parse-mailcap-extras save-pos (point)))) | |
507 | (mailcap-mailcap-entry-passes-test info) | |
508 | (mailcap-add-mailcap-entry major minor info)) | |
509 | (beginning-of-line))))) | |
510 | ||
511 | (defun mailcap-parse-mailcap-extras (st nd) | |
c0393b5e | 512 | "Grab all the extra stuff from a mailcap entry." |
c113de23 GM |
513 | (let ( |
514 | name ; From name= | |
515 | value ; its value | |
516 | results ; Assoc list of results | |
517 | name-pos ; Start of XXXX= position | |
518 | val-pos ; Start of value position | |
519 | done ; Found end of \'d ;s? | |
520 | ) | |
521 | (save-restriction | |
522 | (narrow-to-region st nd) | |
523 | (goto-char (point-min)) | |
524 | (skip-chars-forward " \n\t;") | |
525 | (while (not (eobp)) | |
526 | (setq done nil) | |
527 | (setq name-pos (point)) | |
528 | (skip-chars-forward "^ \n\t=;") | |
529 | (downcase-region name-pos (point)) | |
530 | (setq name (buffer-substring name-pos (point))) | |
531 | (skip-chars-forward " \t\n") | |
532 | (if (not (eq (char-after (point)) ?=)) ; There is no value | |
533 | (setq value t) | |
534 | (skip-chars-forward " \t\n=") | |
535 | (setq val-pos (point)) | |
536 | (if (memq (char-after val-pos) '(?\" ?')) | |
537 | (progn | |
538 | (setq val-pos (1+ val-pos)) | |
539 | (condition-case nil | |
540 | (progn | |
541 | (forward-sexp 1) | |
542 | (backward-char 1)) | |
543 | (error (goto-char (point-max))))) | |
544 | (while (not done) | |
545 | (skip-chars-forward "^;") | |
546 | (if (eq (char-after (1- (point))) ?\\ ) | |
547 | (progn | |
548 | (subst-char-in-region (1- (point)) (point) ?\\ ? ) | |
549 | (skip-chars-forward ";")) | |
550 | (setq done t)))) | |
551 | (setq value (buffer-substring val-pos (point)))) | |
7347faa8 MB |
552 | ;; `test' as symbol, others like "copiousoutput" and "needsx11" as |
553 | ;; strings | |
554 | (setq results (cons (cons (if (string-equal name "test") | |
555 | 'test | |
556 | name) | |
557 | value) results)) | |
c113de23 GM |
558 | (skip-chars-forward " \";\n\t")) |
559 | results))) | |
560 | ||
561 | (defun mailcap-mailcap-entry-passes-test (info) | |
e7f767c2 | 562 | "Return non-nil if mailcap entry INFO passes its test clause. |
c0393b5e DL |
563 | Also return non-nil if no test clause is present." |
564 | (let ((test (assq 'test info)) ; The test clause | |
565 | status) | |
c113de23 GM |
566 | (setq status (and test (split-string (cdr test) " "))) |
567 | (if (and (or (assoc "needsterm" info) | |
568 | (assoc "needsterminal" info) | |
569 | (assoc "needsx11" info)) | |
570 | (not (getenv "DISPLAY"))) | |
571 | (setq status nil) | |
572 | (cond | |
573 | ((and (equal (nth 0 status) "test") | |
574 | (equal (nth 1 status) "-n") | |
575 | (or (equal (nth 2 status) "$DISPLAY") | |
576 | (equal (nth 2 status) "\"$DISPLAY\""))) | |
577 | (setq status (if (getenv "DISPLAY") t nil))) | |
578 | ((and (equal (nth 0 status) "test") | |
579 | (equal (nth 1 status) "-z") | |
580 | (or (equal (nth 2 status) "$DISPLAY") | |
581 | (equal (nth 2 status) "\"$DISPLAY\""))) | |
582 | (setq status (if (getenv "DISPLAY") nil t))) | |
583 | (test nil) | |
584 | (t nil))) | |
585 | (and test (listp test) (setcdr test status)))) | |
586 | ||
587 | ;;; | |
588 | ;;; The action routines. | |
589 | ;;; | |
590 | ||
591 | (defun mailcap-possible-viewers (major minor) | |
c0393b5e | 592 | "Return a list of possible viewers from MAJOR for minor type MINOR." |
c113de23 GM |
593 | (let ((exact '()) |
594 | (wildcard '())) | |
595 | (while major | |
596 | (cond | |
597 | ((equal (car (car major)) minor) | |
598 | (setq exact (cons (cdr (car major)) exact))) | |
23f87bed | 599 | ((and minor (string-match (concat "^" (car (car major)) "$") minor)) |
c113de23 GM |
600 | (setq wildcard (cons (cdr (car major)) wildcard)))) |
601 | (setq major (cdr major))) | |
602 | (nconc exact wildcard))) | |
603 | ||
604 | (defun mailcap-unescape-mime-test (test type-info) | |
605 | (let (save-pos save-chr subst) | |
606 | (cond | |
607 | ((symbolp test) test) | |
608 | ((and (listp test) (symbolp (car test))) test) | |
609 | ((or (stringp test) | |
610 | (and (listp test) (stringp (car test)) | |
611 | (setq test (mapconcat 'identity test " ")))) | |
612 | (with-temp-buffer | |
613 | (insert test) | |
614 | (goto-char (point-min)) | |
615 | (while (not (eobp)) | |
616 | (skip-chars-forward "^%") | |
617 | (if (/= (- (point) | |
618 | (progn (skip-chars-backward "\\\\") | |
619 | (point))) | |
620 | 0) ; It is an escaped % | |
621 | (progn | |
622 | (delete-char 1) | |
623 | (skip-chars-forward "%.")) | |
624 | (setq save-pos (point)) | |
625 | (skip-chars-forward "%") | |
626 | (setq save-chr (char-after (point))) | |
c0393b5e DL |
627 | ;; Escapes: |
628 | ;; %s: name of a file for the body data | |
629 | ;; %t: content-type | |
630 | ;; %{<parameter name}: value of parameter in mailcap entry | |
631 | ;; %n: number of sub-parts for multipart content-type | |
632 | ;; %F: a set of content-type/filename pairs for multiparts | |
c113de23 GM |
633 | (cond |
634 | ((null save-chr) nil) | |
635 | ((= save-chr ?t) | |
636 | (delete-region save-pos (progn (forward-char 1) (point))) | |
637 | (insert (or (cdr (assq 'type type-info)) "\"\""))) | |
c0393b5e | 638 | ((memq save-chr '(?M ?n ?F)) |
c113de23 GM |
639 | (delete-region save-pos (progn (forward-char 1) (point))) |
640 | (insert "\"\"")) | |
641 | ((= save-chr ?{) | |
642 | (forward-char 1) | |
643 | (skip-chars-forward "^}") | |
644 | (downcase-region (+ 2 save-pos) (point)) | |
645 | (setq subst (buffer-substring (+ 2 save-pos) (point))) | |
646 | (delete-region save-pos (1+ (point))) | |
647 | (insert (or (cdr (assoc subst type-info)) "\"\""))) | |
648 | (t nil)))) | |
649 | (buffer-string))) | |
c0393b5e | 650 | (t (error "Bad value to mailcap-unescape-mime-test: %s" test))))) |
c113de23 GM |
651 | |
652 | (defvar mailcap-viewer-test-cache nil) | |
653 | ||
654 | (defun mailcap-viewer-passes-test (viewer-info type-info) | |
e7f767c2 | 655 | "Return non-nil if viewer specified by VIEWER-INFO passes its test clause. |
23f87bed | 656 | Also return non-nil if it has no test clause. TYPE-INFO is an argument |
c0393b5e | 657 | to supply to the test." |
c113de23 GM |
658 | (let* ((test-info (assq 'test viewer-info)) |
659 | (test (cdr test-info)) | |
660 | (otest test) | |
661 | (viewer (cdr (assoc 'viewer viewer-info))) | |
662 | (default-directory (expand-file-name "~/")) | |
663 | status parsed-test cache result) | |
46e8fe3d MB |
664 | (cond ((setq cache (assoc test mailcap-viewer-test-cache)) |
665 | (cadr cache)) | |
666 | ((not test-info) t) ; No test clause | |
667 | (t | |
668 | (setq | |
669 | result | |
670 | (cond | |
671 | ((not test) nil) ; Already failed test | |
672 | ((eq test t) t) ; Already passed test | |
673 | ((functionp test) ; Lisp function as test | |
674 | (funcall test type-info)) | |
675 | ((and (symbolp test) ; Lisp variable as test | |
676 | (boundp test)) | |
677 | (symbol-value test)) | |
678 | ((and (listp test) ; List to be eval'd | |
679 | (symbolp (car test))) | |
680 | (eval test)) | |
681 | (t | |
682 | (setq test (mailcap-unescape-mime-test test type-info) | |
683 | test (list shell-file-name nil nil nil | |
684 | shell-command-switch test) | |
685 | status (apply 'call-process test)) | |
686 | (eq 0 status)))) | |
687 | (push (list otest result) mailcap-viewer-test-cache) | |
688 | result)))) | |
c113de23 GM |
689 | |
690 | (defun mailcap-add-mailcap-entry (major minor info) | |
691 | (let ((old-major (assoc major mailcap-mime-data))) | |
692 | (if (null old-major) ; New major area | |
693 | (setq mailcap-mime-data | |
694 | (cons (cons major (list (cons minor info))) | |
695 | mailcap-mime-data)) | |
23f87bed MB |
696 | (let ((cur-minor (assoc minor old-major))) |
697 | (cond | |
698 | ((or (null cur-minor) ; New minor area, or | |
699 | (assq 'test info)) ; Has a test, insert at beginning | |
700 | (setcdr old-major (cons (cons minor info) (cdr old-major)))) | |
701 | ((and (not (assq 'test info)) ; No test info, replace completely | |
702 | (not (assq 'test cur-minor)) | |
c113de23 GM |
703 | (equal (assq 'viewer info) ; Keep alternative viewer |
704 | (assq 'viewer cur-minor))) | |
23f87bed MB |
705 | (setcdr cur-minor info)) |
706 | (t | |
707 | (setcdr old-major (cons (cons minor info) (cdr old-major)))))) | |
c113de23 GM |
708 | ))) |
709 | ||
710 | (defun mailcap-add (type viewer &optional test) | |
711 | "Add VIEWER as a handler for TYPE. | |
712 | If TEST is not given, it defaults to t." | |
713 | (let ((tl (split-string type "/"))) | |
714 | (when (or (not (car tl)) | |
715 | (not (cadr tl))) | |
716 | (error "%s is not a valid MIME type" type)) | |
717 | (mailcap-add-mailcap-entry | |
718 | (car tl) (cadr tl) | |
719 | `((viewer . ,viewer) | |
720 | (test . ,(if test test t)) | |
721 | (type . ,type))))) | |
722 | ||
723 | ;;; | |
724 | ;;; The main whabbo | |
725 | ;;; | |
726 | ||
727 | (defun mailcap-viewer-lessp (x y) | |
e7f767c2 | 728 | "Return t if viewer X is more desirable than viewer Y." |
c113de23 GM |
729 | (let ((x-wild (string-match "[*?]" (or (cdr-safe (assq 'type x)) ""))) |
730 | (y-wild (string-match "[*?]" (or (cdr-safe (assq 'type y)) ""))) | |
731 | (x-lisp (not (stringp (or (cdr-safe (assq 'viewer x)) "")))) | |
732 | (y-lisp (not (stringp (or (cdr-safe (assq 'viewer y)) ""))))) | |
733 | (cond | |
734 | ((and x-wild (not y-wild)) | |
735 | nil) | |
736 | ((and (not x-wild) y-wild) | |
737 | t) | |
738 | ((and (not y-lisp) x-lisp) | |
739 | t) | |
740 | (t nil)))) | |
741 | ||
b890d447 | 742 | (defun mailcap-mime-info (string &optional request no-decode) |
c113de23 GM |
743 | "Get the MIME viewer command for STRING, return nil if none found. |
744 | Expects a complete content-type header line as its argument. | |
745 | ||
746 | Second argument REQUEST specifies what information to return. If it is | |
747 | nil or the empty string, the viewer (second field of the mailcap | |
748 | entry) will be returned. If it is a string, then the mailcap field | |
749 | corresponding to that string will be returned (print, description, | |
750 | whatever). If a number, then all the information for this specific | |
751 | viewer is returned. If `all', then all possible viewers for | |
b890d447 MB |
752 | this type is returned. |
753 | ||
754 | If NO-DECODE is non-nil, don't decode STRING." | |
755 | ;; NO-DECODE avoids calling `mail-header-parse-content-type' from | |
756 | ;; `mail-parse.el' | |
c113de23 GM |
757 | (let ( |
758 | major ; Major encoding (text, etc) | |
759 | minor ; Minor encoding (html, etc) | |
760 | info ; Other info | |
761 | save-pos ; Misc. position during parse | |
762 | major-info ; (assoc major mailcap-mime-data) | |
763 | minor-info ; (assoc minor major-info) | |
764 | test ; current test proc. | |
765 | viewers ; Possible viewers | |
766 | passed ; Viewers that passed the test | |
767 | viewer ; The one and only viewer | |
768 | ctl) | |
769 | (save-excursion | |
b890d447 MB |
770 | (setq ctl |
771 | (if no-decode | |
772 | (list (or string "text/plain")) | |
773 | (mail-header-parse-content-type (or string "text/plain")))) | |
c113de23 GM |
774 | (setq major (split-string (car ctl) "/")) |
775 | (setq minor (cadr major) | |
776 | major (car major)) | |
777 | (when (setq major-info (cdr (assoc major mailcap-mime-data))) | |
778 | (when (setq viewers (mailcap-possible-viewers major-info minor)) | |
779 | (setq info (mapcar (lambda (a) (cons (symbol-name (car a)) | |
780 | (cdr a))) | |
781 | (cdr ctl))) | |
782 | (while viewers | |
783 | (if (mailcap-viewer-passes-test (car viewers) info) | |
784 | (setq passed (cons (car viewers) passed))) | |
785 | (setq viewers (cdr viewers))) | |
786 | (setq passed (sort passed 'mailcap-viewer-lessp)) | |
787 | (setq viewer (car passed)))) | |
788 | (when (and (stringp (cdr (assq 'viewer viewer))) | |
789 | passed) | |
790 | (setq viewer (car passed))) | |
791 | (cond | |
792 | ((and (null viewer) (not (equal major "default")) request) | |
b890d447 | 793 | (mailcap-mime-info "default" request no-decode)) |
c113de23 GM |
794 | ((or (null request) (equal request "")) |
795 | (mailcap-unescape-mime-test (cdr (assq 'viewer viewer)) info)) | |
796 | ((stringp request) | |
23f87bed MB |
797 | (mailcap-unescape-mime-test |
798 | (cdr-safe (assoc request viewer)) info)) | |
c113de23 GM |
799 | ((eq request 'all) |
800 | passed) | |
801 | (t | |
802 | ;; MUST make a copy *sigh*, else we modify mailcap-mime-data | |
803 | (setq viewer (copy-sequence viewer)) | |
804 | (let ((view (assq 'viewer viewer)) | |
805 | (test (assq 'test viewer))) | |
806 | (if view (setcdr view (mailcap-unescape-mime-test (cdr view) info))) | |
807 | (if test (setcdr test (mailcap-unescape-mime-test (cdr test) info)))) | |
808 | viewer))))) | |
809 | ||
810 | ;;; | |
811 | ;;; Experimental MIME-types parsing | |
812 | ;;; | |
813 | ||
814 | (defvar mailcap-mime-extensions | |
a3f57c41 G |
815 | '(("" . "text/plain") |
816 | (".1" . "text/plain") ;; Manual pages | |
817 | (".3" . "text/plain") | |
818 | (".8" . "text/plain") | |
c0393b5e DL |
819 | (".abs" . "audio/x-mpeg") |
820 | (".aif" . "audio/aiff") | |
821 | (".aifc" . "audio/aiff") | |
822 | (".aiff" . "audio/aiff") | |
823 | (".ano" . "application/x-annotator") | |
824 | (".au" . "audio/ulaw") | |
825 | (".avi" . "video/x-msvideo") | |
826 | (".bcpio" . "application/x-bcpio") | |
827 | (".bin" . "application/octet-stream") | |
828 | (".cdf" . "application/x-netcdr") | |
829 | (".cpio" . "application/x-cpio") | |
830 | (".csh" . "application/x-csh") | |
831 | (".css" . "text/css") | |
832 | (".dvi" . "application/x-dvi") | |
833 | (".diff" . "text/x-patch") | |
a3f57c41 | 834 | (".dpatch". "test/x-patch") |
c0393b5e DL |
835 | (".el" . "application/emacs-lisp") |
836 | (".eps" . "application/postscript") | |
837 | (".etx" . "text/x-setext") | |
838 | (".exe" . "application/octet-stream") | |
839 | (".fax" . "image/x-fax") | |
840 | (".gif" . "image/gif") | |
841 | (".hdf" . "application/x-hdf") | |
842 | (".hqx" . "application/mac-binhex40") | |
843 | (".htm" . "text/html") | |
844 | (".html" . "text/html") | |
845 | (".icon" . "image/x-icon") | |
846 | (".ief" . "image/ief") | |
847 | (".jpg" . "image/jpeg") | |
848 | (".macp" . "image/x-macpaint") | |
849 | (".man" . "application/x-troff-man") | |
850 | (".me" . "application/x-troff-me") | |
851 | (".mif" . "application/mif") | |
852 | (".mov" . "video/quicktime") | |
853 | (".movie" . "video/x-sgi-movie") | |
854 | (".mp2" . "audio/x-mpeg") | |
855 | (".mp3" . "audio/x-mpeg") | |
856 | (".mp2a" . "audio/x-mpeg2") | |
857 | (".mpa" . "audio/x-mpeg") | |
858 | (".mpa2" . "audio/x-mpeg2") | |
859 | (".mpe" . "video/mpeg") | |
860 | (".mpeg" . "video/mpeg") | |
861 | (".mpega" . "audio/x-mpeg") | |
862 | (".mpegv" . "video/mpeg") | |
863 | (".mpg" . "video/mpeg") | |
864 | (".mpv" . "video/mpeg") | |
865 | (".ms" . "application/x-troff-ms") | |
866 | (".nc" . "application/x-netcdf") | |
867 | (".nc" . "application/x-netcdf") | |
868 | (".oda" . "application/oda") | |
869 | (".patch" . "text/x-patch") | |
870 | (".pbm" . "image/x-portable-bitmap") | |
871 | (".pdf" . "application/pdf") | |
872 | (".pgm" . "image/portable-graymap") | |
873 | (".pict" . "image/pict") | |
874 | (".png" . "image/png") | |
875 | (".pnm" . "image/x-portable-anymap") | |
a3f57c41 | 876 | (".pod" . "text/plain") |
c0393b5e DL |
877 | (".ppm" . "image/portable-pixmap") |
878 | (".ps" . "application/postscript") | |
879 | (".qt" . "video/quicktime") | |
880 | (".ras" . "image/x-raster") | |
881 | (".rgb" . "image/x-rgb") | |
882 | (".rtf" . "application/rtf") | |
883 | (".rtx" . "text/richtext") | |
884 | (".sh" . "application/x-sh") | |
885 | (".sit" . "application/x-stuffit") | |
23f87bed | 886 | (".siv" . "application/sieve") |
c0393b5e | 887 | (".snd" . "audio/basic") |
01c52d31 | 888 | (".soa" . "text/dns") |
c0393b5e DL |
889 | (".src" . "application/x-wais-source") |
890 | (".tar" . "archive/tar") | |
891 | (".tcl" . "application/x-tcl") | |
892 | (".tex" . "application/x-tex") | |
893 | (".texi" . "application/texinfo") | |
894 | (".tga" . "image/x-targa") | |
895 | (".tif" . "image/tiff") | |
896 | (".tiff" . "image/tiff") | |
897 | (".tr" . "application/x-troff") | |
898 | (".troff" . "application/x-troff") | |
899 | (".tsv" . "text/tab-separated-values") | |
900 | (".txt" . "text/plain") | |
901 | (".vbs" . "video/mpeg") | |
902 | (".vox" . "audio/basic") | |
903 | (".vrml" . "x-world/x-vrml") | |
904 | (".wav" . "audio/x-wav") | |
23f87bed | 905 | (".xls" . "application/vnd.ms-excel") |
c0393b5e DL |
906 | (".wrl" . "x-world/x-vrml") |
907 | (".xbm" . "image/xbm") | |
908 | (".xpm" . "image/xpm") | |
909 | (".xwd" . "image/windowdump") | |
910 | (".zip" . "application/zip") | |
911 | (".ai" . "application/postscript") | |
912 | (".jpe" . "image/jpeg") | |
6e3165fb | 913 | (".jpeg" . "image/jpeg") |
9e928ac9 | 914 | (".org" . "text/x-org")) |
c0393b5e DL |
915 | "An alist of file extensions and corresponding MIME content-types. |
916 | This exists for you to customize the information in Lisp. It is | |
917 | merged with values from mailcap files by `mailcap-parse-mimetypes'.") | |
c113de23 GM |
918 | |
919 | (defvar mailcap-mimetypes-parsed-p nil) | |
920 | ||
921 | (defun mailcap-parse-mimetypes (&optional path force) | |
c0393b5e | 922 | "Parse out all the mimetypes specified in a Unix-style path string PATH. |
c113de23 GM |
923 | Components of PATH are separated by the `path-separator' character |
924 | appropriate for this system. If PATH is omitted, use the value of | |
925 | environment variable MIMETYPES if set; otherwise use a default path. | |
926 | If FORCE, re-parse even if already parsed." | |
927 | (interactive (list nil t)) | |
928 | (when (or (not mailcap-mimetypes-parsed-p) | |
929 | force) | |
930 | (cond | |
931 | (path nil) | |
932 | ((getenv "MIMETYPES") (setq path (getenv "MIMETYPES"))) | |
23f87bed | 933 | ((memq system-type mailcap-poor-system-types) |
c113de23 GM |
934 | (setq path '("~/mime.typ" "~/etc/mime.typ"))) |
935 | (t (setq path | |
936 | ;; mime.types seems to be the normal name, definitely so | |
937 | ;; on current GNUish systems. The search order follows | |
938 | ;; that for mailcap. | |
939 | '("~/.mime.types" | |
940 | "/etc/mime.types" | |
941 | "/usr/etc/mime.types" | |
942 | "/usr/local/etc/mime.types" | |
943 | "/usr/local/www/conf/mime.types" | |
944 | "~/.mime-types" | |
945 | "/etc/mime-types" | |
946 | "/usr/etc/mime-types" | |
947 | "/usr/local/etc/mime-types" | |
948 | "/usr/local/www/conf/mime-types")))) | |
949 | (let ((fnames (reverse (if (stringp path) | |
4def29e7 | 950 | (split-string path path-separator t) |
c113de23 GM |
951 | path))) |
952 | fname) | |
953 | (while fnames | |
954 | (setq fname (car fnames)) | |
955 | (if (and (file-readable-p fname)) | |
956 | (mailcap-parse-mimetype-file fname)) | |
957 | (setq fnames (cdr fnames)))) | |
958 | (setq mailcap-mimetypes-parsed-p t))) | |
959 | ||
960 | (defun mailcap-parse-mimetype-file (fname) | |
c0393b5e | 961 | "Parse out a mime-types file FNAME." |
c113de23 GM |
962 | (let (type ; The MIME type for this line |
963 | extns ; The extensions for this line | |
964 | save-pos ; Misc. saved buffer positions | |
965 | ) | |
966 | (with-temp-buffer | |
967 | (insert-file-contents fname) | |
968 | (mailcap-replace-regexp "#.*" "") | |
969 | (mailcap-replace-regexp "\n+" "\n") | |
970 | (mailcap-replace-regexp "[ \t]+$" "") | |
971 | (goto-char (point-max)) | |
972 | (skip-chars-backward " \t\n") | |
973 | (delete-region (point) (point-max)) | |
974 | (goto-char (point-min)) | |
975 | (while (not (eobp)) | |
976 | (skip-chars-forward " \t\n") | |
977 | (setq save-pos (point)) | |
978 | (skip-chars-forward "^ \t\n") | |
979 | (downcase-region save-pos (point)) | |
980 | (setq type (buffer-substring save-pos (point))) | |
981 | (while (not (eolp)) | |
982 | (skip-chars-forward " \t") | |
983 | (setq save-pos (point)) | |
984 | (skip-chars-forward "^ \t\n") | |
985 | (setq extns (cons (buffer-substring save-pos (point)) extns))) | |
986 | (while extns | |
987 | (setq mailcap-mime-extensions | |
988 | (cons | |
989 | (cons (if (= (string-to-char (car extns)) ?.) | |
990 | (car extns) | |
991 | (concat "." (car extns))) type) | |
992 | mailcap-mime-extensions) | |
993 | extns (cdr extns))))))) | |
994 | ||
995 | (defun mailcap-extension-to-mime (extn) | |
996 | "Return the MIME content type of the file extensions EXTN." | |
997 | (mailcap-parse-mimetypes) | |
998 | (if (and (stringp extn) | |
999 | (not (eq (string-to-char extn) ?.))) | |
1000 | (setq extn (concat "." extn))) | |
1001 | (cdr (assoc (downcase extn) mailcap-mime-extensions))) | |
1002 | ||
c0393b5e DL |
1003 | ;; Unused? |
1004 | (defalias 'mailcap-command-p 'executable-find) | |
c113de23 GM |
1005 | |
1006 | (defun mailcap-mime-types () | |
1007 | "Return a list of MIME media types." | |
1008 | (mailcap-parse-mimetypes) | |
b890d447 | 1009 | (mailcap-delete-duplicates |
9b198954 DL |
1010 | (nconc |
1011 | (mapcar 'cdr mailcap-mime-extensions) | |
1012 | (apply | |
1013 | 'nconc | |
1014 | (mapcar | |
1015 | (lambda (l) | |
1016 | (delq nil | |
1017 | (mapcar | |
1018 | (lambda (m) | |
1019 | (let ((type (cdr (assq 'type (cdr m))))) | |
1020 | (if (equal (cadr (split-string type "/")) | |
1021 | "*") | |
1022 | nil | |
1023 | type))) | |
1024 | (cdr l)))) | |
1025 | mailcap-mime-data))))) | |
c113de23 | 1026 | |
a837fe74 JL |
1027 | ;;; |
1028 | ;;; Useful supplementary functions | |
1029 | ;;; | |
1030 | ||
1031 | (defun mailcap-file-default-commands (files) | |
1032 | "Return a list of default commands for FILES." | |
1033 | (mailcap-parse-mailcaps) | |
1034 | (mailcap-parse-mimetypes) | |
1035 | (let* ((all-mime-type | |
1036 | ;; All unique MIME types from file extensions | |
d844ef2f JL |
1037 | (mailcap-delete-duplicates |
1038 | (mapcar (lambda (file) | |
1039 | (mailcap-extension-to-mime | |
1040 | (file-name-extension file t))) | |
1041 | files))) | |
a837fe74 JL |
1042 | (all-mime-info |
1043 | ;; All MIME info lists | |
d844ef2f JL |
1044 | (mailcap-delete-duplicates |
1045 | (mapcar (lambda (mime-type) | |
1046 | (mailcap-mime-info mime-type 'all)) | |
1047 | all-mime-type))) | |
a837fe74 JL |
1048 | (common-mime-info |
1049 | ;; Intersection of mime-infos from different mime-types; | |
1050 | ;; or just the first MIME info for a single MIME type | |
1051 | (if (cdr all-mime-info) | |
1052 | (delq nil (mapcar (lambda (mi1) | |
1053 | (unless (memq nil (mapcar | |
1054 | (lambda (mi2) | |
1055 | (member mi1 mi2)) | |
1056 | (cdr all-mime-info))) | |
1057 | mi1)) | |
1058 | (car all-mime-info))) | |
1059 | (car all-mime-info))) | |
1060 | (commands | |
1061 | ;; Command strings from `viewer' field of the MIME info | |
d844ef2f | 1062 | (mailcap-delete-duplicates |
a837fe74 JL |
1063 | (delq nil (mapcar (lambda (mime-info) |
1064 | (let ((command (cdr (assoc 'viewer mime-info)))) | |
1065 | (if (stringp command) | |
d844ef2f | 1066 | (mailcap-replace-in-string |
a837fe74 JL |
1067 | ;; Replace mailcap's `%s' placeholder |
1068 | ;; with dired's `?' placeholder | |
d844ef2f | 1069 | (mailcap-replace-in-string |
a837fe74 | 1070 | ;; Remove the final filename placeholder |
d844ef2f JL |
1071 | command "[ \t\n]*\\('\\)?%s\\1?[ \t\n]*\\'" "" t) |
1072 | "%s" "?" t)))) | |
a837fe74 JL |
1073 | common-mime-info))))) |
1074 | commands)) | |
1075 | ||
c113de23 GM |
1076 | (provide 'mailcap) |
1077 | ||
1078 | ;;; mailcap.el ends here |