1 ;;; mime-play.el --- Playback processing module for mime-view.el
3 ;; Copyright (C) 1994,1995,1996,1997,1998,1999 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Created: 1995/9/26 (separated from tm-view.el)
7 ;; Renamed: 1997/2/21 from tm-play.el
8 ;; Keywords: MIME, multimedia, mail, news
10 ;; This file is part of SEMI (Secretariat of Emacs MIME Interfaces).
12 ;; This program is free software; you can redistribute it and/or
13 ;; modify it under the terms of the GNU General Public License as
14 ;; published by the Free Software Foundation; either version 2, or (at
15 ;; your option) any later version.
17 ;; This program is distributed in the hope that it will be useful, but
18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20 ;; General Public License for more details.
22 ;; You should have received a copy of the GNU General Public License
23 ;; along with GNU Emacs; see the file COPYING. If not, write to the
24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
25 ;; Boston, MA 02111-1307, USA.
37 (error (defvar bbdb-buffer-name nil)))
40 (defvar mime-acting-situation-example-list nil)
42 (defvar mime-acting-situation-example-list-max-size 16)
44 (defun mime-save-acting-situation-examples ()
45 (let* ((file mime-acting-situation-examples-file)
46 (buffer (get-buffer-create " *mime-example*")))
50 (setq buffer-file-name file)
52 (insert ";;; " (file-name-nondirectory file) "\n")
53 (insert "\n;; This file is generated automatically by "
54 mime-view-version "\n\n")
55 (insert ";;; Code:\n\n")
56 (pp `(setq mime-acting-situation-example-list
57 ',mime-acting-situation-example-list)
60 (file-name-nondirectory file)
63 (kill-buffer buffer))))
65 (add-hook 'kill-emacs-hook 'mime-save-acting-situation-examples)
67 (defun mime-reduce-acting-situation-examples ()
68 (let ((len (length mime-acting-situation-example-list))
76 ir mime-acting-situation-example-list)
80 jr mime-acting-situation-example-list)
84 (setq ret (mime-compare-situation-with-example (car ic)(car jc))
86 det-ret (+ (length (car ic))(length (car jc)))
87 det-org (length (cdr ret))
88 freq (+ (cdr ic)(cdr jc)))
89 (cond ((< max-sim sim)
96 dest (cons (cdr ret) freq))
99 (cond ((> min-det-ret det-ret)
100 (setq min-det-ret det-ret
105 dest (cons (cdr ret) freq))
107 ((= min-det-ret det-ret)
108 (cond ((> min-det-org det-org)
109 (setq min-det-org det-org
113 dest (cons (cdr ret) freq))
115 ((= min-det-org det-org)
116 (cond ((> min-freq freq)
120 dest (cons (cdr ret) freq))
134 (setq jr (nthcdr (1- d-j) mime-acting-situation-example-list))
135 (setcdr jr (cddr jr))
137 (setq mime-acting-situation-example-list
138 (cdr mime-acting-situation-example-list))
139 (setq ir (nthcdr (1- d-i) mime-acting-situation-example-list))
140 (setcdr ir (cddr ir))
142 (if (setq ir (assoc (car dest) mime-acting-situation-example-list))
143 (setcdr ir (+ (cdr ir)(cdr dest)))
144 (setq mime-acting-situation-example-list
145 (cons dest mime-acting-situation-example-list))
149 ;;; @ content decoder
153 (defun mime-preview-play-current-entity (&optional ignore-examples mode)
154 "Play current entity.
155 It decodes current entity to call internal or external method. The
156 method is selected from variable `mime-acting-condition'.
157 If IGNORE-EXAMPLES (C-u prefix) is specified, this function ignores
158 `mime-acting-situation-example-list'.
159 If MODE is specified, play as it. Default MODE is \"play\"."
161 (let ((entity (get-text-property (point) 'mime-view-entity)))
163 (let ((situation (list (cons 'mode (or mode "play")))))
166 (cons (cons 'ignore-examples ignore-examples)
168 (mime-play-entity entity situation)
171 (defun mime-sort-situation (situation)
181 (disposition-type . 6)
185 (let ((ret (assq a-t order)))
187 (setq a-order (cdr ret))
193 (let ((ret (assq b-t order)))
195 (setq b-order (cdr ret))
200 (if (= a-order b-order)
201 (string< (format "%s" a-t)(format "%s" b-t))
206 (defsubst mime-delq-null-situation (situations field
207 &optional ignored-value)
210 (let* ((situation (car situations))
211 (cell (assq field situation)))
213 (or (eq (cdr cell) ignored-value)
214 (setq dest (cons situation dest))
216 (setq situations (cdr situations)))
219 (defun mime-compare-situation-with-example (situation example)
220 (let ((example (copy-alist example))
223 (let* ((cell (car situation))
225 (ecell (assoc key example)))
227 (if (equal cell ecell)
228 (setq match (1+ match))
229 (setq example (delq ecell example))
232 (setq situation (cdr situation))
238 (defun mime-play-entity (entity &optional situation ignored-method)
239 "Play entity specified by ENTITY.
240 It decodes the entity to call internal or external method. The method
241 is selected from variable `mime-acting-condition'. If MODE is
242 specified, play as it. Default MODE is \"play\"."
245 (mime-delq-null-situation
246 (ctree-find-calist mime-acting-condition
247 (mime-entity-situation entity situation)
248 mime-view-find-every-acting-situation)
249 'method ignored-method))
250 (or (assq 'ignore-examples situation)
258 (let ((situation (car rest))
259 (examples mime-acting-situation-example-list))
262 (mime-compare-situation-with-example
263 situation (caar examples)))
264 (ret-score (car ret)))
265 (cond ((> ret-score max-score)
266 (setq max-score ret-score
267 max-escore (cdar examples)
268 max-examples (list (cdr ret))
269 max-situations (list situation))
271 ((= ret-score max-score)
272 (cond ((> (cdar examples) max-escore)
273 (setq max-escore (cdar examples)
274 max-examples (list (cdr ret))
275 max-situations (list situation))
277 ((= (cdar examples) max-escore)
279 (cons (cdr ret) max-examples))
280 (or (member situation max-situations)
282 (cons situation max-situations)))
284 (setq examples (cdr examples))))
285 (setq rest (cdr rest)))
287 (setq ret max-situations)
289 (let* ((example (car max-examples))
291 (assoc example mime-acting-situation-example-list)))
293 (setcdr cell (1+ (cdr cell)))
294 (setq mime-acting-situation-example-list
295 (cons (cons example 0)
296 mime-acting-situation-example-list))
298 (setq max-examples (cdr max-examples))
301 (setq ret (select-menu-alist
307 (cdr (assq 'method situation)))
310 (setq ret (mime-sort-situation ret))
311 (add-to-list 'mime-acting-situation-example-list (cons ret 0))
316 (setq method (cdr (assq 'method ret)))
317 (cond ((and (symbolp method)
319 (funcall method entity ret)
322 (mime-activate-mailcap-method entity ret)
324 ;; ((and (listp method)(stringp (car method)))
325 ;; (mime-activate-external-method entity ret)
328 (mime-show-echo-buffer "No method are specified for %s\n"
329 (mime-entity-type/subtype entity))
334 ;;; @ external decoder
337 (defvar mime-mailcap-method-filename-alist nil)
339 (defun mime-activate-mailcap-method (entity situation)
340 (let ((method (cdr (assoc 'method situation)))
341 (name (mime-entity-safe-filename entity)))
343 (if (and name (not (string= name "")))
344 (expand-file-name name temporary-file-directory)
346 (expand-file-name "EMI" temporary-file-directory))
348 (mime-write-entity-content entity name)
349 (message "External method is starting...")
352 (mailcap-format-command
354 (cons (cons 'filename name) situation))))
355 (start-process command mime-echo-buffer-name
356 shell-file-name shell-command-switch command)
358 (set-alist 'mime-mailcap-method-filename-alist process name)
359 (set-process-sentinel process 'mime-mailcap-method-sentinel)
363 (defun mime-mailcap-method-sentinel (process event)
364 (let ((file (cdr (assq process mime-mailcap-method-filename-alist))))
365 (if (file-exists-p file)
368 (remove-alist 'mime-mailcap-method-filename-alist process)
369 (message (format "%s %s" process event)))
371 (defvar mime-echo-window-is-shared-with-bbdb
372 (module-installed-p 'bbdb)
373 "*If non-nil, mime-echo window is shared with BBDB window.")
375 (defvar mime-echo-window-height
378 (/ (window-height) 5)
380 "*Size of mime-echo window.
381 It allows function or integer. If it is function,
382 `mime-show-echo-buffer' calls it to get height of mime-echo window.
383 Otherwise `mime-show-echo-buffer' uses it as height of mime-echo
386 (defun mime-show-echo-buffer (&rest forms)
387 "Show mime-echo buffer to display MIME-playing information."
388 (get-buffer-create mime-echo-buffer-name)
389 (let ((the-win (selected-window))
390 (win (get-buffer-window mime-echo-buffer-name)))
392 (unless (and mime-echo-window-is-shared-with-bbdb
394 (setq win (get-buffer-window bbdb-buffer-name))
396 (select-window (get-buffer-window (or mime-preview-buffer
398 (setq win (split-window-vertically
400 (if (functionp mime-echo-window-height)
401 (funcall mime-echo-window-height)
402 mime-echo-window-height)
405 (set-window-buffer win mime-echo-buffer-name)
408 (goto-char (point-max))
410 (insert (apply (function format) forms))
412 (select-window the-win)
419 (defvar mime-view-file-name-char-regexp "[A-Za-z0-9+_-]")
421 (defvar mime-view-file-name-regexp-1
422 (concat mime-view-file-name-char-regexp "+\\."
423 mime-view-file-name-char-regexp "+"))
425 (defvar mime-view-file-name-regexp-2
426 (concat (regexp-* mime-view-file-name-char-regexp)
427 "\\(\\." mime-view-file-name-char-regexp "+\\)*"))
429 (defun mime-entity-safe-filename (entity)
431 (or (mime-entity-filename entity)
433 (or (mime-read-field 'Content-Description entity)
434 (mime-read-field 'Subject entity))))
436 (or (string-match mime-view-file-name-regexp-1 subj)
437 (string-match mime-view-file-name-regexp-2 subj)))
438 (substring subj (match-beginning 0)(match-end 0))
441 (replace-as-filename filename)
445 ;;; @ file extraction
448 (defun mime-save-content (entity situation)
449 (let* ((name (mime-entity-safe-filename entity))
450 (filename (if (and name (not (string-equal name "")))
451 (expand-file-name name
452 (save-window-excursion
456 (interactive "DDirectory: ")
458 (save-window-excursion
462 (interactive "FFilename: ")
463 (expand-file-name file)))))))
465 (if (file-exists-p filename)
466 (or (yes-or-no-p (format "File %s exists. Save anyway? " filename))
468 (mime-write-entity-content entity filename)
475 (defvar mime-magic-type-alist
476 '(("^\377\330\377[\340\356]..JFIF" image jpeg)
477 ("^\211PNG" image png)
478 ("^GIF8[79]" image gif)
479 ("^II\\*\000" image tiff)
480 ("^MM\000\\*" image tiff)
482 ("^\000\000\001\263" video mpeg)
484 "*Alist of regexp about magic-number vs. corresponding media-types.
485 Each element looks like (REGEXP TYPE SUBTYPE).
486 REGEXP is a regular expression to match against the beginning of the
488 TYPE is symbol to indicate primary type of media-type.
489 SUBTYPE is symbol to indicate subtype of media-type.")
491 (defun mime-detect-content (entity situation)
493 (let ((mdata (mime-entity-content entity))
494 (rest mime-magic-type-alist))
495 (while (not (let ((cell (car rest)))
497 (if (string-match (car cell) mdata)
498 (setq type (nth 1 cell)
499 subtype (nth 2 cell))
502 (setq rest (cdr rest))))
506 (put-alist 'type type
507 (put-alist 'subtype subtype
509 (copy-alist situation))))
510 'mime-detect-content)
515 ;;; @ mail/news message
518 (defun mime-preview-quitting-method-for-mime-show-message-mode ()
519 "Quitting method for mime-view.
520 It is registered to variable `mime-preview-quitting-method-alist'."
521 (let ((mother mime-mother-buffer)
522 (win-conf mime-preview-original-window-configuration)
524 (kill-buffer mime-raw-buffer)
525 (mime-preview-kill-buffer)
526 (set-window-configuration win-conf)
527 (pop-to-buffer mother)
530 (defun mime-view-message/rfc822 (entity situation)
532 (format "%s-%s" (buffer-name) (mime-entity-number entity)))
533 (mother (current-buffer))
534 (children (car (mime-entity-children entity))))
535 (set-buffer (get-buffer-create new-name))
537 (mime-insert-entity children)
538 (setq mime-message-structure children)
539 (setq major-mode 'mime-show-message-mode)
540 (mime-view-buffer (current-buffer) nil mother
541 nil (if (mime-entity-cooked-p entity) 'cooked))
545 ;;; @ message/partial
548 (defun mime-store-message/partial-piece (entity cal)
551 (concat "m-prts-" (user-login-name)) temporary-file-directory))
552 (id (cdr (assoc "id" cal)))
553 (number (cdr (assoc "number" cal)))
554 (total (cdr (assoc "total" cal)))
556 (mother (current-buffer))
558 (or (file-exists-p root-dir)
559 (make-directory root-dir)
561 (setq id (replace-as-filename id))
562 (setq root-dir (concat root-dir "/" id))
563 (or (file-exists-p root-dir)
564 (make-directory root-dir)
566 (setq file (concat root-dir "/FULL"))
567 (if (file-exists-p file)
568 (let ((full-buf (get-buffer-create "FULL"))
569 (pwin (or (get-buffer-window mother)
570 (get-largest-window)))
572 (save-window-excursion
573 (set-buffer full-buf)
575 (as-binary-input-file (insert-file-contents file))
576 (setq major-mode 'mime-show-message-mode)
577 (mime-view-buffer (current-buffer) nil mother)
579 (set-window-buffer pwin
581 (set-buffer full-buf)
582 mime-preview-buffer))
585 (setq file (concat root-dir "/" number))
586 (mime-write-entity-body entity file)
587 (let ((total-file (concat root-dir "/CT")))
591 (or (file-exists-p total-file)
594 (get-buffer-create mime-temp-buffer-name))
597 (write-region (point-min)(point-max) total-file)
598 (kill-buffer (current-buffer))
600 (string-to-number total)
602 (and (file-exists-p total-file)
604 (set-buffer (find-file-noselect total-file))
606 (and (re-search-forward "[0-9]+" nil t)
608 (buffer-substring (match-beginning 0)
611 (kill-buffer (current-buffer))
614 (if (and total (> total 0))
617 (set-buffer (get-buffer-create mime-temp-buffer-name))
618 (let ((full-buf (current-buffer)))
622 (setq file (concat root-dir "/" (int-to-string i)))
623 (or (file-exists-p file)
626 (as-binary-input-file (insert-file-contents file))
627 (goto-char (point-max))
630 (as-binary-output-file
631 (write-region (point-min)(point-max)
632 (expand-file-name "FULL" root-dir)))
635 (let ((file (format "%s/%d" root-dir i)))
636 (and (file-exists-p file)
641 (let ((file (expand-file-name "CT" root-dir)))
642 (and (file-exists-p file)
645 (save-window-excursion
646 (setq major-mode 'mime-show-message-mode)
647 (mime-view-buffer (current-buffer) nil mother)
649 (let ((pwin (or (get-buffer-window mother)
650 (get-largest-window)))
651 (pbuf (save-excursion
652 (set-buffer full-buf)
653 mime-preview-buffer)))
654 (set-window-buffer pwin pbuf)
660 ;;; @ message/external-body
663 (defvar mime-raw-dired-function
664 (if (and (>= emacs-major-version 19) window-system)
665 (function dired-other-frame)
666 (function mime-raw-dired-function-for-one-frame)
669 (defun mime-raw-dired-function-for-one-frame (dir)
670 (let ((win (or (get-buffer-window mime-preview-buffer)
671 (get-largest-window))))
676 (defun mime-view-message/external-anon-ftp (entity cal)
677 (let* ((site (cdr (assoc "site" cal)))
678 (directory (cdr (assoc "directory" cal)))
679 (name (cdr (assoc "name" cal)))
680 (pathname (concat "/anonymous@" site ":" directory)))
681 (message (concat "Accessing " (expand-file-name name pathname) " ..."))
682 (funcall mime-raw-dired-function pathname)
683 (goto-char (point-min))
684 (search-forward name)
687 (defvar mime-raw-browse-url-function mime-browse-url-function)
689 (defun mime-view-message/external-url (entity cal)
690 (let ((url (cdr (assoc "url" cal))))
691 (message (concat "Accessing " url " ..."))
692 (funcall mime-raw-browse-url-function url)))
698 (define-ccl-program translate-string
701 (read-multibyte-character r1 r2)
702 (translate-character r0 r1 r2)
703 (write-multibyte-character r1 r2)
706 (defun mime-view-caesar (entity situation)
707 "Internal method for mime-view to display ROT13-47-48 message."
708 (let ((buf (get-buffer-create
709 (format "%s-%s" (buffer-name) (mime-entity-number entity)))))
710 (with-current-buffer buf
711 (setq buffer-read-only nil)
713 (let ((enable-character-translation nil))
714 (mime-insert-text-content entity))
715 (mule-caesar-region (point-min) (point-max))
716 (let ((str (buffer-string))
717 (status (make-vector 9 nil))
721 (while (and (< i (length translation-table-vector))
722 (setq e (aref translation-table-vector i)))
723 (if (eq (cdr e) standard-translation-table-for-decode)
728 (aset status 0 table)
729 (delete-region (point-min) (point-max))
730 (insert (ccl-execute-on-string
734 (set-buffer-modified-p nil)
736 (let ((win (get-buffer-window (current-buffer))))
737 (or (eq (selected-window) win)
738 (select-window (or win (get-largest-window)))
741 (goto-char (point-min))
750 (let* ((file mime-acting-situation-examples-file)
751 (buffer (get-buffer-create " *mime-example*")))
752 (if (file-readable-p file)
757 (insert-file-contents file)
762 (while (and (> (length mime-acting-situation-example-list)
763 mime-acting-situation-example-list-max-size)
765 (mime-reduce-acting-situation-examples)
768 (error (setq mime-acting-situation-example-list nil)))
770 (kill-buffer buffer))))
772 ;;; mime-play.el ends here