1 ;;; mime-view.el --- interactive MIME viewer for GNU Emacs
3 ;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
7 ;; Renamed: 1994/08/31 from tm-body.el
8 ;; Renamed: 1997/02/19 from tm-view.el
9 ;; Keywords: MIME, multimedia, mail, news
11 ;; This file is part of SEMI (Sample of Elastic MIME Interfaces).
13 ;; This program is free software; you can redistribute it and/or
14 ;; modify it under the terms of the GNU General Public License as
15 ;; published by the Free Software Foundation; either version 2, or (at
16 ;; your option) any later version.
18 ;; This program is distributed in the hope that it will be useful, but
19 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
21 ;; General Public License for more details.
23 ;; You should have received a copy of the GNU General Public License
24 ;; along with GNU Emacs; see the file COPYING. If not, write to the
25 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
26 ;; Boston, MA 02111-1307, USA.
41 (defconst mime-view-version
42 (concat (mime-product-name mime-user-interface-product) " MIME-View "
43 (mapconcat #'number-to-string
44 (mime-product-version mime-user-interface-product) ".")
45 " (" (mime-product-code-name mime-user-interface-product) ")"))
51 (defgroup mime-view nil
55 (defcustom mime-view-find-every-acting-situation t
56 "*Find every available acting-situation if non-nil."
60 (defcustom mime-acting-situation-examples-file "~/.mime-example"
61 "*File name of example about acting-situation demonstrated by user."
66 ;;; @ in raw-buffer (representation space)
69 (defvar mime-preview-buffer nil
70 "MIME-preview buffer corresponding with the (raw) buffer.")
71 (make-variable-buffer-local 'mime-preview-buffer)
74 (defvar mime-raw-representation-type-alist
75 '((mime-show-message-mode . binary)
76 (mime-temp-message-mode . binary)
79 "Alist of major-mode vs. representation-type of mime-raw-buffer.
80 Each element looks like (SYMBOL . REPRESENTATION-TYPE). SYMBOL is
81 major-mode or t. t means default. REPRESENTATION-TYPE must be
82 `binary' or `cooked'.")
85 (defun mime-raw-find-entity-from-point (point &optional message-info)
86 "Return entity from POINT in mime-raw-buffer.
87 If optional argument MESSAGE-INFO is not specified,
88 `mime-message-structure' is used."
90 (setq message-info mime-message-structure))
91 (if (and (<= (mime-entity-point-min message-info) point)
92 (<= point (mime-entity-point-max message-info)))
93 (let ((children (mime-entity-children message-info)))
97 (mime-raw-find-entity-from-point point (car children))))
101 (setq children (cdr children)))
105 ;;; @ in preview-buffer (presentation space)
108 (defvar mime-mother-buffer nil
109 "Mother buffer corresponding with the (MIME-preview) buffer.
110 If current MIME-preview buffer is generated by other buffer, such as
111 message/partial, it is called `mother-buffer'.")
112 (make-variable-buffer-local 'mime-mother-buffer)
114 (defvar mime-raw-buffer nil
115 "Raw buffer corresponding with the (MIME-preview) buffer.")
116 (make-variable-buffer-local 'mime-raw-buffer)
118 (defvar mime-preview-original-window-configuration nil
119 "Window-configuration before mime-view-mode is called.")
120 (make-variable-buffer-local 'mime-preview-original-window-configuration)
122 (defun mime-preview-original-major-mode (&optional recursive)
123 "Return major-mode of original buffer.
124 If optional argument RECURSIVE is non-nil and current buffer has
125 mime-mother-buffer, it returns original major-mode of the
127 (if (and recursive mime-mother-buffer)
129 (set-buffer mime-mother-buffer)
130 (mime-preview-original-major-mode recursive)
135 (get-text-property (point-min) 'mime-view-entity)))
139 ;;; @ entity information
142 (defun mime-entity-situation (entity &optional situation)
143 "Return situation of ENTITY."
144 (let (rest param name)
146 (unless (assq 'type situation)
147 (setq rest (or (mime-entity-content-type entity)
148 (make-mime-content-type 'text 'plain))
149 situation (cons (car rest) situation)
152 (unless (assq 'subtype situation)
154 (setq rest (or (cdr (mime-entity-content-type entity))
155 '((subtype . plain)))))
156 (setq situation (cons (car rest) situation)
160 (setq param (car rest))
161 (or (assoc (car param) situation)
162 (setq situation (cons param situation)))
163 (setq rest (cdr rest)))
165 ;; Content-Disposition
167 (unless (assq 'disposition-type situation)
168 (setq rest (mime-entity-content-disposition entity))
170 (setq situation (cons (cons 'disposition-type
171 (mime-content-disposition-type rest))
173 rest (mime-content-disposition-parameters rest))
176 (setq param (car rest)
178 (if (cond ((string= name "filename")
179 (if (assq 'filename situation)
181 (setq name 'filename)))
182 ((string= name "creation-date")
183 (if (assq 'creation-date situation)
185 (setq name 'creation-date)))
186 ((string= name "modification-date")
187 (if (assq 'modification-date situation)
189 (setq name 'modification-date)))
190 ((string= name "read-date")
191 (if (assq 'read-date situation)
193 (setq name 'read-date)))
194 ((string= name "size")
195 (if (assq 'size situation)
198 (t (setq name (cons 'disposition name))
199 (if (assoc name situation)
203 (cons (cons name (cdr param))
205 (setq rest (cdr rest)))
207 ;; Content-Transfer-Encoding
208 (or (assq 'encoding situation)
210 (cons (cons 'encoding (or (mime-entity-encoding entity)
215 (or (assq 'major-mode situation)
217 (cons (cons 'major-mode
218 (with-current-buffer (mime-entity-buffer entity)
224 (defun mime-view-entity-title (entity)
225 (or (mime-read-field 'Content-Description entity)
226 (mime-read-field 'Subject entity)
227 (mime-entity-filename entity)
231 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
232 "Return entity-node-id from POINT in mime-raw-buffer.
233 If optional argument MESSAGE-INFO is not specified,
234 `mime-message-structure' is used."
235 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
237 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
238 "Return entity-number from POINT in mime-raw-buffer.
239 If optional argument MESSAGE-INFO is not specified,
240 `mime-message-structure' is used."
241 (mime-entity-number (mime-raw-find-entity-from-point point message-info)))
243 (defun mime-raw-flatten-message-info (&optional message-info)
244 "Return list of entity in mime-raw-buffer.
245 If optional argument MESSAGE-INFO is not specified,
246 `mime-message-structure' is used."
248 (setq message-info mime-message-structure))
249 (let ((dest (list message-info))
250 (rcl (mime-entity-children message-info)))
252 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
253 (setq rcl (cdr rcl)))
257 ;;; @ presentation of preview
263 ;;; @@@ predicate function
266 (defun mime-view-entity-button-visible-p (entity)
267 "Return non-nil if header of ENTITY is visible.
268 Please redefine this function if you want to change default setting."
269 (let ((media-type (mime-entity-media-type entity))
270 (media-subtype (mime-entity-media-subtype entity)))
271 (or (not (eq media-type 'application))
272 (and (not (eq media-subtype 'x-selection))
273 (or (not (eq media-subtype 'octet-stream))
274 (let ((mother-entity (mime-entity-parent entity)))
275 (or (not (eq (mime-entity-media-type mother-entity)
277 (not (eq (mime-entity-media-subtype mother-entity)
282 ;;; @@@ entity button generator
285 (defun mime-view-insert-entity-button (entity)
286 "Insert entity-button of ENTITY."
287 (let ((entity-node-id (mime-entity-node-id entity))
288 (params (mime-entity-parameters entity))
289 (subject (mime-view-entity-title entity)))
291 (let ((access-type (assoc "access-type" params))
292 (num (or (cdr (assoc "x-part-number" params))
293 (if (consp entity-node-id)
296 (format "%s" (1+ num))
298 (reverse entity-node-id) ".")
302 (let ((server (assoc "server" params)))
303 (setq access-type (cdr access-type))
305 (format "%s %s ([%s] %s)"
306 num subject access-type (cdr server))
307 (let ((site (cdr (assoc "site" params)))
308 (dir (cdr (assoc "directory" params)))
309 (url (cdr (assoc "url" params)))
312 (format "%s %s ([%s] %s)"
313 num subject access-type url)
314 (format "%s %s ([%s] %s:%s)"
315 num subject access-type site dir))
319 (let ((media-type (mime-entity-media-type entity))
320 (media-subtype (mime-entity-media-subtype entity))
321 (charset (cdr (assoc "charset" params)))
322 (encoding (mime-entity-encoding entity)))
326 (format " <%s/%s%s%s>"
327 media-type media-subtype
329 (concat "; " charset)
332 (concat " (" encoding ")")
334 (if (>= (+ (current-column)(length rest))(window-width))
338 (function mime-preview-play-current-entity))
345 (defvar mime-header-presentation-method-alist nil
346 "Alist of major mode vs. corresponding header-presentation-method functions.
347 Each element looks like (SYMBOL . FUNCTION).
348 SYMBOL must be major mode in raw-buffer or t. t means default.
349 Interface of FUNCTION must be (ENTITY SITUATION).")
351 (defvar mime-view-ignored-field-list
352 '(".*Received:" ".*Path:" ".*Id:" "^References:"
353 "^Replied:" "^Errors-To:"
354 "^Lines:" "^Sender:" ".*Host:" "^Xref:"
355 "^Content-Type:" "^Precedence:"
356 "^Status:" "^X-VM-.*:")
357 "All fields that match this list will be hidden in MIME preview buffer.
358 Each elements are regexp of field-name.")
360 (defvar mime-view-visible-field-list '("^Dnas.*:" "^Message-Id:")
361 "All fields that match this list will be displayed in MIME preview buffer.
362 Each elements are regexp of field-name.")
368 ;;; @@@ predicate function
371 (defun mime-calist::field-match-method-as-default-rule (calist
372 field-type field-value)
373 (let ((s-field (assq field-type calist)))
374 (cond ((null s-field)
375 (cons (cons field-type field-value) calist)
379 (define-calist-field-match-method
380 'header #'mime-calist::field-match-method-as-default-rule)
382 (define-calist-field-match-method
383 'body #'mime-calist::field-match-method-as-default-rule)
386 (defvar mime-preview-condition nil
387 "Condition-tree about how to display entity.")
389 (ctree-set-calist-strictly
390 'mime-preview-condition '((type . application)(subtype . octet-stream)
393 (ctree-set-calist-strictly
394 'mime-preview-condition '((type . application)(subtype . octet-stream)
397 (ctree-set-calist-strictly
398 'mime-preview-condition '((type . application)(subtype . octet-stream)
402 (ctree-set-calist-strictly
403 'mime-preview-condition '((type . application)(subtype . pgp)
406 (ctree-set-calist-strictly
407 'mime-preview-condition '((type . application)(subtype . x-latex)
410 (ctree-set-calist-strictly
411 'mime-preview-condition '((type . application)(subtype . x-selection)
414 (ctree-set-calist-strictly
415 'mime-preview-condition '((type . application)(subtype . x-comment)
418 (ctree-set-calist-strictly
419 'mime-preview-condition '((type . message)(subtype . delivery-status)
422 (ctree-set-calist-strictly
423 'mime-preview-condition
425 (body-presentation-method . mime-display-text/plain)))
427 (ctree-set-calist-strictly
428 'mime-preview-condition
431 (body-presentation-method . mime-display-text/plain)))
433 (ctree-set-calist-strictly
434 'mime-preview-condition
435 '((type . text)(subtype . enriched)
437 (body-presentation-method . mime-display-text/enriched)))
439 (ctree-set-calist-strictly
440 'mime-preview-condition
441 '((type . text)(subtype . richtext)
443 (body-presentation-method . mime-display-text/richtext)))
445 (ctree-set-calist-strictly
446 'mime-preview-condition
447 '((type . text)(subtype . x-vcard)
449 (body-presentation-method . mime-display-text/x-vcard)))
451 (ctree-set-calist-strictly
452 'mime-preview-condition
453 '((type . application)(subtype . x-postpet)
455 (body-presentation-method . mime-display-application/x-postpet)))
457 (ctree-set-calist-strictly
458 'mime-preview-condition
459 '((type . text)(subtype . t)
461 (body-presentation-method . mime-display-text/plain)))
463 (ctree-set-calist-strictly
464 'mime-preview-condition
465 '((type . multipart)(subtype . alternative)
467 (body-presentation-method . mime-display-multipart/alternative)))
469 (ctree-set-calist-strictly
470 'mime-preview-condition '((type . message)(subtype . partial)
471 (body-presentation-method
472 . mime-display-message/partial-button)))
474 (ctree-set-calist-strictly
475 'mime-preview-condition '((type . message)(subtype . rfc822)
476 (body-presentation-method . nil)
477 (childrens-situation (header . visible)
478 (entity-button . invisible))))
480 (ctree-set-calist-strictly
481 'mime-preview-condition '((type . message)(subtype . news)
482 (body-presentation-method . nil)
483 (childrens-situation (header . visible)
484 (entity-button . invisible))))
487 ;;; @@@ entity presentation
490 (defun mime-display-text/plain (entity situation)
492 (narrow-to-region (point-max)(point-max))
493 (mime-insert-text-content entity)
494 (run-hooks 'mime-text-decode-hook)
495 (goto-char (point-max))
496 (if (not (eq (char-after (1- (point))) ?\n))
499 (mime-add-url-buttons)
500 (run-hooks 'mime-display-text/plain-hook)
503 (defun mime-display-text/richtext (entity situation)
505 (narrow-to-region (point-max)(point-max))
506 (mime-insert-text-content entity)
507 (run-hooks 'mime-text-decode-hook)
508 (let ((beg (point-min)))
509 (remove-text-properties beg (point-max) '(face nil))
510 (richtext-decode beg (point-max))
513 (defun mime-display-text/enriched (entity situation)
515 (narrow-to-region (point-max)(point-max))
516 (mime-insert-text-content entity)
517 (run-hooks 'mime-text-decode-hook)
518 (let ((beg (point-min)))
519 (remove-text-properties beg (point-max) '(face nil))
520 (enriched-decode beg (point-max))
523 (defun mime-display-text/x-vcard (entity situation)
525 (narrow-to-region (point-max)(point-max))
526 (insert (string-as-multibyte (mime-entity-content entity)))
527 (goto-char (point-min))
528 (while (re-search-forward
529 "\\(;\\(encoding=\\)?quoted-printable:\\)\\(\\(=[0-9A-F][0-9A-F]\\|=\r?\n\\|[^\r\n]\\)*\\)"
533 (buffer-substring (match-beginning 1) (match-end 1))
536 (decode-coding-string
537 (buffer-substring (match-beginning 3) (match-end 3)) 'raw-text-dos)
538 "quoted-printable")))
540 (decode-coding-region (point-min) (point-max) 'undecided)
541 (goto-char (point-max))
542 (if (not (eq (char-after (1- (point))) ?\n))
544 (mime-add-url-buttons)
545 (run-hooks 'mime-display-text/x-vcard-hook)
548 (defun mime-display-application/x-postpet (entity situation)
550 (narrow-to-region (point-max)(point-max))
551 (let ((contents (string-as-unibyte (mime-entity-content entity)))
553 petname owner pettype from
554 carryingcount sentyear sentmonth sentday
555 petbirthyear petbirthmonth petbirthday
559 (+ ( char-int (aref contents (1+ (1+ (1+ p)))))
560 (* 256 (char-int (aref contents (1+ (1+ p)))))
561 (* 256 256 (char-int (aref contents (1+ p))))
562 (* 256 256 256 (char-int (aref contents p)))
568 (+ ( char-int (aref contents (1+ p)))
569 (* 256 (char-int (aref contents p)))
574 (+ ( char-int (aref contents (1+ p)))
575 (* 256 (char-int (aref contents p)))
580 (+ ( char-int (aref contents (1+ p)))
581 (* 256 (char-int (aref contents p)))
586 (setq petname (decode-mime-charset-string (substring contents (1+ p) (setq p (+ p 1 (char-int (aref contents p))))) 'shift_jis))
587 (setq owner (decode-mime-charset-string (substring contents (1+ p) (setq p (+ p 1 (char-int (aref contents p))))) 'shift_jis))
588 (setq pettype (substring contents p (setq p (+ p 4))))
591 (+ ( char-int (aref contents (1+ p)))
592 (* 256 (char-int (aref contents p)))
597 (+ ( char-int (aref contents (1+ p)))
598 (* 256 (char-int (aref contents p)))
603 (+ ( char-int (aref contents (1+ p)))
604 (* 256 (char-int (aref contents p)))
609 (setq from (substring contents (1+ p) (setq p (+ p 1 (char-int (aref contents p))))))
610 (insert "Petname: " petname "\n"
612 "Pettype: " pettype "\n"
614 "CarryingCount: " (int-to-string carryingcount) "\n"
615 "SentYaer: " (int-to-string sentyear) "\n"
616 "SentMonth: " (int-to-string sentmonth) "\n"
617 "Sentday: " (int-to-string sentday) "\n"
618 "PetbirthYear: " (int-to-string petbirthyear) "\n"
619 "PetbirthMonth: " (int-to-string petbirthmonth) "\n"
620 "PetbirthDay: " (int-to-string petbirthday) "\n"
622 (run-hooks 'mime-display-application/x-postpet-hook))))
624 (defvar mime-view-announcement-for-message/partial
625 (if (and (>= emacs-major-version 19) window-system)
627 \[[ This is message/partial style split message. ]]
628 \[[ Please press `v' key in this buffer ]]
629 \[[ or click here by mouse button-2. ]]"
631 \[[ This is message/partial style split message. ]]
632 \[[ Please press `v' key in this buffer. ]]"
635 (defun mime-display-message/partial-button (&optional entity situation)
637 (goto-char (point-max))
638 (if (not (search-backward "\n\n" nil t))
641 (goto-char (point-max))
642 (narrow-to-region (point-max)(point-max))
643 (insert mime-view-announcement-for-message/partial)
644 (mime-add-button (point-min)(point-max)
645 #'mime-preview-play-current-entity)
648 (defun mime-display-multipart/mixed (entity situation)
649 (let ((children (mime-entity-children entity))
651 (cdr (assq 'childrens-situation situation))))
653 (mime-display-entity (car children) nil default-situation)
654 (setq children (cdr children))
657 (defcustom mime-view-type-subtype-score-alist
658 '(((text . enriched) . 3)
659 ((text . richtext) . 2)
662 "Alist MEDIA-TYPE vs corresponding score.
663 MEDIA-TYPE must be (TYPE . SUBTYPE), TYPE or t. t means default."
665 :type '(repeat (cons (choice :tag "Media-Type"
666 (cons :tag "Type/Subtype"
667 (symbol :tag "Primary-type")
668 (symbol :tag "Subtype"))
670 (const :tag "Default" t))
673 (defun mime-display-multipart/alternative (entity situation)
674 (let* ((children (mime-entity-children entity))
676 (cdr (assq 'childrens-situation situation)))
684 (or (ctree-match-calist
685 mime-preview-condition
686 (append (mime-entity-situation child)
689 (if (cdr (assq 'body-presentation-method situation))
694 (cdr (assq 'type situation))
695 (cdr (assq 'subtype situation)))
696 mime-view-type-subtype-score-alist)
698 (cdr (assq 'type situation))
699 mime-view-type-subtype-score-alist)
702 mime-view-type-subtype-score-alist)
704 (if (> score max-score)
714 (let ((child (car children))
715 (situation (car situations)))
716 (mime-display-entity child (if (= i p)
718 (del-alist 'body-presentation-method
719 (copy-alist situation))))
721 (setq children (cdr children)
722 situations (cdr situations)
727 ;;; @ acting-condition
730 (defvar mime-acting-condition nil
731 "Condition-tree about how to process entity.")
733 (if (file-readable-p mailcap-file)
734 (let ((entries (mailcap-parse-file)))
736 (let ((entry (car entries))
739 (let* ((field (car entry))
740 (field-type (car field)))
741 (cond ((eq field-type 'view) (setq view field))
742 ((eq field-type 'print) (setq print field))
743 ((memq field-type '(compose composetyped edit)))
744 (t (setq shared (cons field shared))))
746 (setq entry (cdr entry))
748 (setq shared (nreverse shared))
749 (ctree-set-calist-with-default
750 'mime-acting-condition
751 (append shared (list '(mode . "play")(cons 'method (cdr view)))))
753 (ctree-set-calist-with-default
754 'mime-acting-condition
756 (list '(mode . "print")(cons 'method (cdr view))))
759 (setq entries (cdr entries))
762 (ctree-set-calist-strictly
763 'mime-acting-condition
764 '((type . application)(subtype . octet-stream)
766 (method . mime-detect-content)
769 (ctree-set-calist-with-default
770 'mime-acting-condition
772 (method . mime-save-content)))
774 (ctree-set-calist-strictly
775 'mime-acting-condition
776 '((type . text)(subtype . x-rot13-47)(mode . "play")
777 (method . mime-view-caesar)
779 (ctree-set-calist-strictly
780 'mime-acting-condition
781 '((type . text)(subtype . x-rot13-47-48)(mode . "play")
782 (method . mime-view-caesar)
785 (ctree-set-calist-strictly
786 'mime-acting-condition
787 '((type . message)(subtype . rfc822)(mode . "play")
788 (method . mime-view-message/rfc822)
790 (ctree-set-calist-strictly
791 'mime-acting-condition
792 '((type . message)(subtype . partial)(mode . "play")
793 (method . mime-store-message/partial-piece)
796 (ctree-set-calist-strictly
797 'mime-acting-condition
798 '((type . message)(subtype . external-body)
799 ("access-type" . "anon-ftp")
800 (method . mime-view-message/external-anon-ftp)
803 (ctree-set-calist-strictly
804 'mime-acting-condition
805 '((type . message)(subtype . external-body)
806 ("access-type" . "url")
807 (method . mime-view-message/external-url)
810 (ctree-set-calist-strictly
811 'mime-acting-condition
812 '((type . application)(subtype . octet-stream)
813 (method . mime-save-content)
817 ;;; @ quitting method
820 (defvar mime-preview-quitting-method-alist
821 '((mime-show-message-mode
822 . mime-preview-quitting-method-for-mime-show-message-mode))
823 "Alist of major-mode vs. quitting-method of mime-view.")
825 (defvar mime-preview-over-to-previous-method-alist nil
826 "Alist of major-mode vs. over-to-previous-method of mime-view.")
828 (defvar mime-preview-over-to-next-method-alist nil
829 "Alist of major-mode vs. over-to-next-method of mime-view.")
832 ;;; @ following method
835 (defvar mime-preview-following-method-alist nil
836 "Alist of major-mode vs. following-method of mime-view.")
838 (defvar mime-view-following-required-fields-list
845 (defun mime-display-entity (entity &optional situation
846 default-situation preview-buffer)
848 (setq preview-buffer (current-buffer)))
849 (let* ((raw-buffer (mime-entity-buffer entity))
850 (start (mime-entity-point-min entity))
852 (set-buffer raw-buffer)
856 (or (ctree-match-calist mime-preview-condition
857 (append (mime-entity-situation entity)
860 (let ((button-is-invisible
861 (eq (cdr (assq 'entity-button situation)) 'invisible))
863 (eq (cdr (assq 'header situation)) 'visible))
864 (header-presentation-method
865 (or (cdr (assq 'header-presentation-method situation))
866 (cdr (assq major-mode mime-header-presentation-method-alist))))
867 (body-presentation-method
868 (cdr (assq 'body-presentation-method situation)))
869 (children (mime-entity-children entity)))
870 (set-buffer preview-buffer)
872 (narrow-to-region nb nb)
873 (or button-is-invisible
874 (if (mime-view-entity-button-visible-p entity)
875 (mime-view-insert-entity-button entity)
877 (when header-is-visible
878 (if header-presentation-method
879 (funcall header-presentation-method entity situation)
880 (mime-insert-header entity
881 mime-view-ignored-field-list
882 mime-view-visible-field-list))
883 (goto-char (point-max))
885 (run-hooks 'mime-display-header-hook)
888 ((functionp body-presentation-method)
889 (funcall body-presentation-method entity situation)
892 (when button-is-invisible
893 (goto-char (point-max))
894 (mime-view-insert-entity-button entity)
896 (or header-is-visible
898 (goto-char (point-max))
902 (setq ne (point-max))
904 (put-text-property nb ne 'mime-view-entity entity)
907 (if (functionp body-presentation-method)
908 (funcall body-presentation-method entity situation)
909 (mime-display-multipart/mixed entity situation)
914 ;;; @ MIME viewer mode
917 (defconst mime-view-menu-title "MIME-View")
918 (defconst mime-view-menu-list
919 '((up "Move to upper entity" mime-preview-move-to-upper)
920 (previous "Move to previous entity" mime-preview-move-to-previous)
921 (next "Move to next entity" mime-preview-move-to-next)
922 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
923 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
924 (play "Play current entity" mime-preview-play-current-entity)
925 (extract "Extract current entity" mime-preview-extract-current-entity)
926 (print "Print current entity" mime-preview-print-current-entity)
928 "Menu for MIME Viewer")
930 (cond ((featurep 'xemacs)
931 (defvar mime-view-xemacs-popup-menu
932 (cons mime-view-menu-title
935 (vector (nth 1 item)(nth 2 item) t)
937 mime-view-menu-list)))
938 (defun mime-view-xemacs-popup-menu (event)
939 "Popup the menu in the MIME Viewer buffer"
941 (select-window (event-window event))
942 (set-buffer (event-buffer event))
943 (popup-menu 'mime-view-xemacs-popup-menu))
944 (defvar mouse-button-2 'button2)
947 (defvar mouse-button-2 [mouse-2])
950 (defun mime-view-define-keymap (&optional default)
951 (let ((mime-view-mode-map (if (keymapp default)
952 (copy-keymap default)
955 (define-key mime-view-mode-map
956 "u" (function mime-preview-move-to-upper))
957 (define-key mime-view-mode-map
958 "p" (function mime-preview-move-to-previous))
959 (define-key mime-view-mode-map
960 "n" (function mime-preview-move-to-next))
961 (define-key mime-view-mode-map
962 "\e\t" (function mime-preview-move-to-previous))
963 (define-key mime-view-mode-map
964 "\t" (function mime-preview-move-to-next))
965 (define-key mime-view-mode-map
966 " " (function mime-preview-scroll-up-entity))
967 (define-key mime-view-mode-map
968 "\M- " (function mime-preview-scroll-down-entity))
969 (define-key mime-view-mode-map
970 "\177" (function mime-preview-scroll-down-entity))
971 (define-key mime-view-mode-map
972 "\C-m" (function mime-preview-next-line-entity))
973 (define-key mime-view-mode-map
974 "\C-\M-m" (function mime-preview-previous-line-entity))
975 (define-key mime-view-mode-map
976 "v" (function mime-preview-play-current-entity))
977 (define-key mime-view-mode-map
978 "e" (function mime-preview-extract-current-entity))
979 (define-key mime-view-mode-map
980 "\C-c\C-p" (function mime-preview-print-current-entity))
981 (define-key mime-view-mode-map
982 "a" (function mime-preview-follow-current-entity))
983 (define-key mime-view-mode-map
984 "q" (function mime-preview-quit))
985 (define-key mime-view-mode-map
986 "\C-c\C-x" (function mime-preview-kill-buffer))
987 ;; (define-key mime-view-mode-map
988 ;; "<" (function beginning-of-buffer))
989 ;; (define-key mime-view-mode-map
990 ;; ">" (function end-of-buffer))
991 (define-key mime-view-mode-map
992 "?" (function describe-mode))
993 (define-key mime-view-mode-map
994 [tab] (function mime-preview-move-to-next))
995 (define-key mime-view-mode-map
996 [delete] (function mime-preview-scroll-down-entity))
997 (define-key mime-view-mode-map
998 [backspace] (function mime-preview-scroll-down-entity))
999 (if (functionp default)
1000 (cond ((featurep 'xemacs)
1001 (set-keymap-default-binding mime-view-mode-map default)
1004 (setq mime-view-mode-map
1005 (append mime-view-mode-map (list (cons t default))))
1008 (define-key mime-view-mode-map
1009 mouse-button-2 (function mime-button-dispatcher))
1011 (cond ((featurep 'xemacs)
1012 (define-key mime-view-mode-map
1013 mouse-button-3 (function mime-view-xemacs-popup-menu))
1015 ((>= emacs-major-version 19)
1016 (define-key mime-view-mode-map [menu-bar mime-view]
1017 (cons mime-view-menu-title
1018 (make-sparse-keymap mime-view-menu-title)))
1021 (define-key mime-view-mode-map
1022 (vector 'menu-bar 'mime-view (car item))
1023 (cons (nth 1 item)(nth 2 item))
1026 (reverse mime-view-menu-list)
1029 (use-local-map mime-view-mode-map)
1030 (run-hooks 'mime-view-define-keymap-hook)
1033 (defsubst mime-maybe-hide-echo-buffer ()
1034 "Clear mime-echo buffer and delete window for it."
1035 (let ((buf (get-buffer mime-echo-buffer-name)))
1040 (let ((win (get-buffer-window buf)))
1047 (defvar mime-view-redisplay nil)
1050 (defun mime-display-message (message &optional preview-buffer
1051 mother default-keymap-or-function)
1052 "View MESSAGE in MIME-View mode.
1054 Optional argument PREVIEW-BUFFER specifies the buffer of the
1055 presentation. It must be either nil or a name of preview buffer.
1057 Optional argument MOTHER specifies mother-buffer of the preview-buffer.
1059 Optional argument DEFAULT-KEYMAP-OR-FUNCTION is nil, keymap or
1060 function. If it is a keymap, keymap of MIME-View mode will be added
1061 to it. If it is a function, it will be bound as default binding of
1062 keymap of MIME-View mode."
1063 (mime-maybe-hide-echo-buffer)
1064 (let ((win-conf (current-window-configuration))
1065 (raw-buffer (mime-entity-buffer message)))
1067 (setq preview-buffer
1068 (concat "*Preview-" (buffer-name raw-buffer) "*")))
1069 (set-buffer raw-buffer)
1070 (setq mime-preview-buffer preview-buffer)
1071 (let ((inhibit-read-only t))
1072 (set-buffer (get-buffer-create preview-buffer))
1075 (setq mime-raw-buffer raw-buffer)
1077 (setq mime-mother-buffer mother)
1079 (setq mime-preview-original-window-configuration win-conf)
1080 (setq major-mode 'mime-view-mode)
1081 (setq mode-name "MIME-View")
1082 (mime-display-entity message nil
1083 '((entity-button . invisible)
1086 (mime-view-define-keymap default-keymap-or-function)
1088 (next-single-property-change (point-min) 'mime-view-entity)))
1091 (goto-char (point-min))
1092 (search-forward "\n\n" nil t)
1094 (run-hooks 'mime-view-mode-hook)
1095 (set-buffer-modified-p nil)
1096 (setq buffer-read-only t)
1097 (or (get-buffer-window preview-buffer)
1098 (let ((r-win (get-buffer-window raw-buffer)))
1100 (set-window-buffer r-win preview-buffer)
1101 (let ((m-win (and mother (get-buffer-window mother))))
1103 (set-window-buffer m-win preview-buffer)
1104 (switch-to-buffer preview-buffer)
1109 (defun mime-view-buffer (&optional raw-buffer preview-buffer mother
1110 default-keymap-or-function
1111 representation-type)
1112 "View RAW-BUFFER in MIME-View mode.
1113 Optional argument PREVIEW-BUFFER is either nil or a name of preview
1115 Optional argument DEFAULT-KEYMAP-OR-FUNCTION is nil, keymap or
1116 function. If it is a keymap, keymap of MIME-View mode will be added
1117 to it. If it is a function, it will be bound as default binding of
1118 keymap of MIME-View mode.
1119 Optional argument REPRESENTATION-TYPE is representation-type of
1120 message. It must be nil, `binary' or `cooked'. If it is nil,
1121 `cooked' is used as default."
1124 (setq raw-buffer (current-buffer)))
1125 (or representation-type
1126 (setq representation-type
1128 (set-buffer raw-buffer)
1129 (cdr (or (assq major-mode mime-raw-representation-type-alist)
1130 (assq t mime-raw-representation-type-alist)))
1132 (if (eq representation-type 'binary)
1133 (setq representation-type 'buffer)
1135 (mime-display-message
1136 (mime-open-entity representation-type raw-buffer)
1137 preview-buffer mother default-keymap-or-function))
1139 (defun mime-view-mode (&optional mother ctl encoding
1140 raw-buffer preview-buffer
1141 default-keymap-or-function)
1142 "Major mode for viewing MIME message.
1144 Here is a list of the standard keys for mime-view-mode.
1149 u Move to upper content
1150 p or M-TAB Move to previous content
1151 n or TAB Move to next content
1152 SPC Scroll up or move to next content
1153 M-SPC or DEL Scroll down or move to previous content
1154 RET Move to next line
1155 M-RET Move to previous line
1156 v Decode current content as `play mode'
1157 e Decode current content as `extract mode'
1158 C-c C-p Decode current content as `print mode'
1159 a Followup to current content.
1161 button-2 Move to point under the mouse cursor
1162 and decode current content as `play mode'
1165 (unless mime-view-redisplay
1167 (if raw-buffer (set-buffer raw-buffer))
1170 (or (assq major-mode mime-raw-representation-type-alist)
1171 (assq t mime-raw-representation-type-alist)))))
1172 (if (eq type 'binary)
1175 (setq mime-message-structure (mime-open-entity type raw-buffer))
1176 (or (mime-entity-content-type mime-message-structure)
1177 (mime-entity-set-content-type-internal
1178 mime-message-structure ctl))
1180 (or (mime-entity-encoding mime-message-structure)
1181 (mime-entity-set-encoding-internal mime-message-structure encoding))
1183 (mime-display-message mime-message-structure preview-buffer
1184 mother default-keymap-or-function)
1191 (autoload 'mime-preview-play-current-entity "mime-play"
1192 "Play current entity." t)
1194 (defun mime-preview-extract-current-entity (&optional ignore-examples)
1195 "Extract current entity into file (maybe).
1196 It decodes current entity to call internal or external method as
1197 \"extract\" mode. The method is selected from variable
1198 `mime-acting-condition'."
1200 (mime-preview-play-current-entity ignore-examples "extract")
1203 (defun mime-preview-print-current-entity (&optional ignore-examples)
1204 "Print current entity (maybe).
1205 It decodes current entity to call internal or external method as
1206 \"print\" mode. The method is selected from variable
1207 `mime-acting-condition'."
1209 (mime-preview-play-current-entity ignore-examples "print")
1216 (defun mime-preview-follow-current-entity ()
1217 "Write follow message to current entity.
1218 It calls following-method selected from variable
1219 `mime-preview-following-method-alist'."
1222 (while (null (setq entity
1223 (get-text-property (point) 'mime-view-entity)))
1227 (previous-single-property-change (point) 'mime-view-entity))
1229 (entity-node-id (mime-entity-node-id entity))
1230 (len (length entity-node-id))
1234 (if (eq (next-single-property-change (point-min)
1240 ((eq (next-single-property-change p-beg 'mime-view-entity)
1242 (setq p-beg (point))
1244 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
1246 (setq p-end (point-max))
1248 ((null entity-node-id)
1249 (setq p-end (point-max))
1257 (next-single-property-change
1258 (point) 'mime-view-entity))
1260 (let ((rc (mime-entity-node-id
1261 (get-text-property (point)
1262 'mime-view-entity))))
1263 (or (equal entity-node-id
1264 (nthcdr (- (length rc) len) rc))
1269 (setq p-end (point-max))
1272 (let* ((mode (mime-preview-original-major-mode 'recursive))
1274 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1276 (the-buf (current-buffer))
1277 (a-buf mime-raw-buffer)
1280 (set-buffer (setq new-buf (get-buffer-create new-name)))
1282 (insert-buffer-substring the-buf p-beg p-end)
1283 (goto-char (point-min))
1284 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1291 (mime-find-entity-from-node-id entity-node-id))
1294 (mime-entity-point-min ci)
1295 (mime-entity-point-max ci)
1297 (std11-header-string-except
1299 (apply (function regexp-or) fields)
1302 (eq (mime-entity-media-type ci) 'message)
1303 (eq (mime-entity-media-subtype ci) 'rfc822))
1309 (setq fields (std11-collect-field-names)
1310 entity-node-id (cdr entity-node-id))
1313 (let ((rest mime-view-following-required-fields-list))
1315 (let ((field-name (car rest)))
1316 (or (std11-field-body field-name)
1322 (set-buffer the-buf)
1323 (set-buffer mime-mother-buffer)
1324 (set-buffer mime-raw-buffer)
1325 (std11-field-body field-name)
1329 (setq rest (cdr rest))
1331 (mime-decode-header-in-buffer)
1333 (let ((f (cdr (assq mode mime-preview-following-method-alist))))
1338 "Sorry, following method for %s is not implemented yet."
1347 (defun mime-preview-move-to-upper ()
1348 "Move to upper entity.
1349 If there is no upper entity, call function `mime-preview-quit'."
1352 (while (null (setq cinfo
1353 (get-text-property (point) 'mime-view-entity)))
1356 (let ((r (mime-entity-parent cinfo))
1359 (while (setq point (previous-single-property-change
1360 (point) 'mime-view-entity))
1362 (if (eq r (get-text-property (point) 'mime-view-entity))
1369 (defun mime-preview-move-to-previous ()
1370 "Move to previous entity.
1371 If there is no previous entity, it calls function registered in
1372 variable `mime-preview-over-to-previous-method-alist'."
1374 (while (null (get-text-property (point) 'mime-view-entity))
1377 (let ((point (previous-single-property-change (point) 'mime-view-entity)))
1379 (if (get-text-property (1- point) 'mime-view-entity)
1381 (goto-char (1- point))
1382 (mime-preview-move-to-previous)
1384 (let ((f (assq (mime-preview-original-major-mode)
1385 mime-preview-over-to-previous-method-alist)))
1391 (defun mime-preview-move-to-next ()
1392 "Move to next entity.
1393 If there is no previous entity, it calls function registered in
1394 variable `mime-preview-over-to-next-method-alist'."
1396 (while (and (not (eobp))
1397 (null (get-text-property (point) 'mime-view-entity)))
1400 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1404 (if (null (get-text-property point 'mime-view-entity))
1405 (mime-preview-move-to-next)
1407 (let ((f (assq (mime-preview-original-major-mode)
1408 mime-preview-over-to-next-method-alist)))
1414 (defun mime-preview-scroll-up-entity (&optional h)
1415 "Scroll up current entity.
1416 If reached to (point-max), it calls function registered in variable
1417 `mime-preview-over-to-next-method-alist'."
1420 (setq h (1- (window-height)))
1422 (if (= (point) (point-max))
1423 (let ((f (assq (mime-preview-original-major-mode)
1424 mime-preview-over-to-next-method-alist)))
1429 (or (next-single-property-change (point) 'mime-view-entity)
1432 (if (> (point) point)
1437 (defun mime-preview-scroll-down-entity (&optional h)
1438 "Scroll down current entity.
1439 If reached to (point-min), it calls function registered in variable
1440 `mime-preview-over-to-previous-method-alist'."
1443 (setq h (1- (window-height)))
1445 (if (= (point) (point-min))
1446 (let ((f (assq (mime-preview-original-major-mode)
1447 mime-preview-over-to-previous-method-alist)))
1452 (or (previous-single-property-change (point) 'mime-view-entity)
1454 (forward-line (- h))
1455 (if (< (point) point)
1459 (defun mime-preview-next-line-entity ()
1461 (mime-preview-scroll-up-entity 1)
1464 (defun mime-preview-previous-line-entity ()
1466 (mime-preview-scroll-down-entity 1)
1473 (defun mime-preview-quit ()
1474 "Quit from MIME-preview buffer.
1475 It calls function registered in variable
1476 `mime-preview-quitting-method-alist'."
1478 (let ((r (assq (mime-preview-original-major-mode)
1479 mime-preview-quitting-method-alist)))
1484 (defun mime-preview-kill-buffer ()
1486 (kill-buffer (current-buffer))
1493 (provide 'mime-view)
1495 (run-hooks 'mime-view-load-hook)
1497 ;;; mime-view.el ends here