1 ;;; mime-view.el --- interactive MIME viewer for GNU Emacs
3 ;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
7 ;; Renamed: 1994/8/31 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 (Sophisticated Emacs 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.
32 (require 'eword-decode)
41 (defconst mime-view-version-string
42 `,(concat "SEMI MIME-View "
43 (mapconcat #'number-to-string (cdr semi-version) ".")
44 " (" (car semi-version) ")"))
47 ;;; @ buffer local variables
53 (defvar mime-raw-message-info
54 "Information about structure of message.
55 Please use reference function `mime-entity-SLOT' to get value of SLOT.
57 Following is a list of slots of the structure:
59 node-id reversed entity-number (list of integers)
60 point-min beginning point of region in raw-buffer
61 point-max end point of region in raw-buffer
62 type media-type (symbol)
63 subtype media-subtype (symbol)
64 type/subtype media-type/subtype (string or nil)
65 parameters parameter of Content-Type field (association list)
66 encoding Content-Transfer-Encoding (string or nil)
67 children entities included in this entity (list of content-infos)
69 If an entity includes other entities in its body, such as multipart or
70 message/rfc822, `mime-entity' structures of them are included in
71 `children', so the `mime-entity' structure become a tree.")
72 (make-variable-buffer-local 'mime-raw-message-info)
74 (defvar mime-preview-buffer nil
75 "MIME-preview buffer corresponding with the (raw) buffer.")
76 (make-variable-buffer-local 'mime-preview-buffer)
79 ;;; @@ in preview-buffer
82 (defvar mime-mother-buffer nil
83 "Mother buffer corresponding with the (MIME-preview) buffer.
84 If current MIME-preview buffer is generated by other buffer, such as
85 message/partial, it is called `mother-buffer'.")
86 (make-variable-buffer-local 'mime-mother-buffer)
88 (defvar mime-raw-buffer nil
89 "Raw buffer corresponding with the (MIME-preview) buffer.")
90 (make-variable-buffer-local 'mime-raw-buffer)
92 (defvar mime-preview-original-major-mode nil
93 "Major-mode of mime-raw-buffer.")
94 (make-variable-buffer-local 'mime-preview-original-major-mode)
96 (make-variable-buffer-local 'mime-preview-original-window-configuration)
102 ;;; @@ predicate function
105 (defvar mime-view-content-button-visible-ctype-list
106 '("application/pgp"))
108 (defun mime-view-entity-button-visible-p (entity message-info)
109 "Return non-nil if header of ENTITY is visible.
110 Please redefine this function if you want to change default setting."
111 (and (not (mime-root-entity-p entity))
112 (let ((media-type (mime-entity-media-type entity))
113 (media-subtype (mime-entity-media-subtype entity)))
114 (or (not (eq media-type 'application))
115 (and (not (eq media-subtype 'x-selection))
116 (or (not (eq media-subtype 'octet-stream))
118 (mime-raw-entity-parent entity message-info)))
119 (or (not (eq (mime-entity-media-type mother-entity)
121 (not (eq (mime-entity-media-subtype mother-entity)
126 ;;; @@ entity button generator
129 (defun mime-view-insert-entity-button (entity message-info subj)
130 "Insert entity-button of ENTITY."
131 (let ((entity-node-id (mime-entity-node-id entity))
132 (params (mime-entity-parameters entity)))
134 (let ((access-type (assoc "access-type" params))
135 (num (or (cdr (assoc "x-part-number" params))
136 (if (consp entity-node-id)
139 (format "%s" (1+ num))
141 (reverse entity-node-id) ".")
145 (let ((server (assoc "server" params)))
146 (setq access-type (cdr access-type))
148 (format "%s %s ([%s] %s)"
149 num subj access-type (cdr server))
150 (let ((site (cdr (assoc "site" params)))
151 (dir (cdr (assoc "directory" params)))
153 (format "%s %s ([%s] %s:%s)"
154 num subj access-type site dir)
158 (let ((media-type (mime-entity-media-type entity))
159 (media-subtype (mime-entity-media-subtype entity))
160 (charset (cdr (assoc "charset" params)))
161 (encoding (mime-entity-encoding entity)))
165 (format " <%s/%s%s%s>"
166 media-type media-subtype
168 (concat "; " charset)
171 (concat " (" encoding ")")
173 (if (>= (+ (current-column)(length rest))(window-width))
177 (function mime-preview-play-current-entity))
184 ;;; @@ predicate function
187 (defvar mime-view-childrens-header-showing-Content-Type-list
188 '("message/rfc822" "message/news"))
190 (defun mime-view-header-visible-p (entity message-info)
191 "Return non-nil if header of ENTITY is visible."
192 (let ((entity-node-id (mime-entity-node-id entity)))
193 (or (null entity-node-id)
194 (member (mime-entity-type/subtype
195 (mime-raw-find-entity-from-node-id
196 (cdr entity-node-id) message-info))
197 mime-view-childrens-header-showing-Content-Type-list)
200 ;;; @@ entity header filter
203 (defvar mime-view-content-header-filter-alist nil)
205 (defun mime-view-default-content-header-filter ()
206 (mime-view-cut-header)
207 (eword-decode-header)
210 (defun mime-view-display-header (beg end)
212 (narrow-to-region (point)(point))
213 (insert-buffer-substring mime-raw-buffer beg end)
214 (let ((f (cdr (assq mime-preview-original-major-mode
215 mime-view-content-header-filter-alist))))
218 (mime-view-default-content-header-filter)
220 (run-hooks 'mime-view-content-header-filter-hook)
223 ;;; @@ entity field cutter
226 (defvar mime-view-ignored-field-list
227 '(".*Received" ".*Path" ".*Id" "References"
228 "Replied" "Errors-To"
229 "Lines" "Sender" ".*Host" "Xref"
230 "Content-Type" "Precedence"
232 "All fields that match this list will be hidden in MIME preview buffer.
233 Each elements are regexp of field-name.")
235 (defvar mime-view-ignored-field-regexp
237 (apply (function regexp-or) mime-view-ignored-field-list)
240 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
241 "All fields that match this list will be displayed in MIME preview buffer.
242 Each elements are regexp of field-name.")
244 (defun mime-view-cut-header ()
245 (goto-char (point-min))
246 (while (re-search-forward mime-view-ignored-field-regexp nil t)
247 (let* ((beg (match-beginning 0))
249 (name (buffer-substring beg end))
252 (let ((rest mime-view-visible-field-list))
254 (if (string-match (car rest) name)
257 (setq rest (cdr rest))))
260 (if (re-search-forward "^\\([^ \t]\\|$\\)" nil t)
269 ;;; @@ predicate function
272 (defvar mime-view-body-visible-condition
283 (octet-stream encoding
293 "Condition-tree to be able to display body of entity.")
295 (defun mime-view-body-visible-p (entity message-info)
296 "Return non-nil if body of ENTITY is visible."
298 mime-view-body-visible-condition
299 (list* (cons 'type (mime-entity-media-type entity))
300 (cons 'subtype (mime-entity-media-subtype entity))
301 (cons 'encoding (mime-entity-encoding entity))
302 (cons 'major-mode major-mode)
303 (mime-entity-parameters entity))))
305 ;; (defvar mime-view-visible-media-type-list
306 ;; '("text/plain" nil "text/richtext" "text/enriched"
307 ;; "text/rfc822-headers"
308 ;; "text/x-latex" "application/x-latex"
309 ;; "message/delivery-status"
310 ;; "application/pgp" "text/x-pgp"
311 ;; "application/octet-stream"
312 ;; "application/x-selection" "application/x-comment")
313 ;; "*List of media-types to be able to display in MIME-preview buffer.
314 ;; Each elements are string of TYPE/SUBTYPE, e.g. \"text/plain\".")
316 ;; (defun mime-view-body-visible-p (entity message-info)
317 ;; "Return non-nil if body of ENTITY is visible."
318 ;; (let ((media-type (mime-entity-media-type entity))
319 ;; (media-subtype (mime-entity-media-subtype entity))
320 ;; (ctype (mime-entity-type/subtype entity)))
321 ;; (and (member ctype mime-view-visible-media-type-list)
322 ;; (if (and (eq media-type 'application)
323 ;; (eq media-subtype 'octet-stream))
324 ;; (member (mime-entity-encoding entity) '(nil "7bit" "8bit"))
331 (defvar mime-view-content-filter-alist
332 '(("text/enriched" . mime-view-filter-for-text/enriched)
333 ("text/richtext" . mime-view-filter-for-text/richtext)
334 (t . mime-view-filter-for-text/plain)
336 "Alist of media-types vs. corresponding MIME-preview filter functions.
337 Each element looks like (TYPE/SUBTYPE . FUNCTION) or (t . FUNCTION).
338 TYPE/SUBTYPE is a string of media-type and FUNCTION is a filter
339 function. t means default media-type.")
341 (defun mime-view-display-body (start end entity message-info subj)
343 (narrow-to-region (point-max)(point-max))
344 (insert-buffer-substring mime-raw-buffer start end)
345 (let* ((ctype (mime-entity-type/subtype entity))
346 (params (mime-entity-parameters entity))
347 (encoding (mime-entity-encoding entity))
348 (f (cdr (or (assoc ctype mime-view-content-filter-alist)
349 (assq t mime-view-content-filter-alist)))))
351 (funcall f ctype params encoding))
354 (defvar mime-view-announcement-for-message/partial
355 (if (and (>= emacs-major-version 19) window-system)
357 \[[ This is message/partial style split message. ]]
358 \[[ Please press `v' key in this buffer ]]
359 \[[ or click here by mouse button-2. ]]"
361 \[[ This is message/partial style split message. ]]
362 \[[ Please press `v' key in this buffer. ]]"
365 (defun mime-view-insert-message/partial-button ()
367 (goto-char (point-max))
368 (if (not (search-backward "\n\n" nil t))
371 (goto-char (point-max))
372 (narrow-to-region (point-max)(point-max))
373 (insert mime-view-announcement-for-message/partial)
374 (mime-add-button (point-min)(point-max)
375 #'mime-preview-play-current-entity)
379 ;;; @ entity separator
382 (defun mime-view-entity-separator-function (entity message-info)
383 "Insert entity-separator of ENTITY conditionally.
384 Please redefine this function if you want to change default setting."
385 (or (mime-view-header-visible-p entity message-info)
386 (mime-view-body-visible-p entity message-info)
388 (goto-char (point-max))
393 ;;; @ acting-condition
396 (defvar mime-acting-condition
397 '(((type . text)(subtype . plain)
398 (method "tm-plain" nil 'file "" 'encoding 'mode 'name)
399 (mode "play" "print")
401 ((type . text)(subtype . html)
402 (method "tm-html" nil 'file "" 'encoding 'mode 'name)
405 ((type . text)(subtype . x-rot13-47)
406 (method . mime-method-to-display-caesar)
409 ((type . text)(subtype . x-rot13-47-48)
410 (method . mime-method-to-display-caesar)
414 ((type . audio)(subtype . basic)
415 (method "tm-au" nil 'file "" 'encoding 'mode 'name)
420 (method "tm-image" nil 'file "" 'encoding 'mode 'name)
421 (mode "play" "print")
424 ((type . video)(subtype . mpeg)
425 (method "tm-mpeg" nil 'file "" 'encoding 'mode 'name)
429 ((type . application)(subtype . postscript)
430 (method "tm-ps" nil 'file "" 'encoding 'mode 'name)
431 (mode "play" "print")
433 ((type . application)(subtype . octet-stream)
434 (method . mime-method-to-save)(mode "play" "print")
437 ((type . message)(subtype . external-body)
438 ("access-type" . "anon-ftp")
439 (method . mime-method-to-display-message/external-ftp)
441 ((type . message)(subtype . rfc822)
442 (method . mime-method-to-display-message/rfc822)
445 ((type . message)(subtype . partial)
446 (method . mime-method-to-store-message/partial)
450 ((method "metamail" t "-m" "tm" "-x" "-d" "-z" "-e" 'file)
453 ((method . mime-method-to-save)(mode . "extract"))
457 ;;; @ quitting method
460 (defvar mime-preview-quitting-method-alist
461 '((mime-show-message-mode
462 . mime-preview-quitting-method-for-mime-show-message-mode))
463 "Alist of major-mode vs. quitting-method of mime-view.")
465 (defvar mime-view-over-to-previous-method-alist nil)
466 (defvar mime-view-over-to-next-method-alist nil)
468 (defvar mime-view-show-summary-method nil
469 "Alist of major-mode vs. show-summary-method.")
472 ;;; @ following method
475 (defvar mime-view-following-method-alist nil
476 "Alist of major-mode vs. following-method of mime-view.")
478 (defvar mime-view-following-required-fields-list
485 ;; hack from Gnus 5.0.4.
487 (defvar mime-view-x-face-to-pbm-command
488 "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm")
490 (defvar mime-view-x-face-command
491 (concat mime-view-x-face-to-pbm-command
493 "String to be executed to display an X-Face field.
494 The command will be executed in a sub-shell asynchronously.
495 The compressed face will be piped to this command.")
497 (defun mime-view-x-face-function ()
498 "Function to display X-Face field. You can redefine to customize."
499 ;; 1995/10/12 (c.f. tm-eng:130)
500 ;; fixed by Eric Ding <ericding@San-Jose.ate.slb.com>
502 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
504 (goto-char (point-min))
505 (if (re-search-forward "^X-Face:[ \t]*" nil t)
506 (let ((beg (match-end 0))
507 (end (std11-field-end))
509 (call-process-region beg end "sh" nil 0 nil
510 "-c" mime-view-x-face-command)
517 (defvar mime-view-uuencode-encoding-name-list '("x-uue" "x-uuencode"))
519 (defvar mime-raw-buffer-coding-system-alist
520 `((t . ,(mime-charset-to-coding-system default-mime-charset)))
521 "Alist of major-mode vs. corresponding coding-system of `mime-raw-buffer'.")
527 (defvar mime-view-redisplay nil)
529 (defun mime-view-setup-buffers (&optional ctl encoding ibuf obuf)
535 (or mime-view-redisplay
536 (setq mime-raw-message-info (mime-parse-message ctl encoding))
538 (let* ((message-info mime-raw-message-info)
539 (pcl (mime-raw-flatten-message-info message-info))
540 (the-buf (current-buffer))
544 (setq obuf (concat "*Preview-" (buffer-name the-buf) "*")))
545 (set-buffer (get-buffer-create obuf))
546 (let ((inhibit-read-only t))
547 ;;(setq buffer-read-only nil)
550 (setq mime-raw-buffer the-buf)
551 (setq mime-preview-original-major-mode mode)
552 (setq major-mode 'mime-view-mode)
553 (setq mode-name "MIME-View")
555 (mime-view-display-entity (car pcl) message-info the-buf obuf)
558 (set-buffer-modified-p nil)
560 (setq buffer-read-only t)
563 (setq mime-preview-buffer obuf)
566 (defun mime-view-display-entity (entity message-info ibuf obuf)
568 (let* ((beg (mime-entity-point-min entity))
569 (end (mime-entity-point-max entity))
570 (media-type (mime-entity-media-type entity))
571 (media-subtype (mime-entity-media-subtype entity))
572 (ctype (if media-type
574 (format "%s/%s" media-type media-subtype)
575 (symbol-name media-type)
577 (params (mime-entity-parameters entity))
578 (encoding (mime-entity-encoding entity))
579 (entity-node-id (mime-entity-node-id entity))
583 (setq he (if (re-search-forward "^$" nil t)
590 (narrow-to-region beg end)
593 (mime-raw-get-subject params encoding)))
597 (narrow-to-region nb nb)
598 (if (mime-view-entity-button-visible-p entity message-info)
599 (mime-view-insert-entity-button entity message-info subj)
601 (if (mime-view-header-visible-p entity message-info)
602 (mime-view-display-header beg he)
604 (if (and (mime-root-entity-p entity)
606 ctype mime-view-content-button-visible-ctype-list))
608 (goto-char (point-max))
609 (mime-view-insert-entity-button entity message-info subj)
611 (cond ((mime-view-body-visible-p entity message-info)
612 (mime-view-display-body he end entity message-info subj)
614 ((and (eq media-type 'message)(eq media-subtype 'partial))
615 (mime-view-insert-message/partial-button)
617 ((and (null entity-node-id)
618 (null (mime-entity-children message-info))
620 (goto-char (point-max))
621 (mime-view-insert-entity-button entity message-info subj)
623 (mime-view-entity-separator-function entity message-info)
624 (setq ne (point-max))
626 (put-text-property nb ne 'mime-view-raw-buffer ibuf)
627 (put-text-property nb ne 'mime-view-entity entity)
631 (defun mime-raw-get-uu-filename (param &optional encoding)
632 (if (member (or encoding
633 (cdr (assq 'encoding param))
635 mime-view-uuencode-encoding-name-list)
637 (or (if (re-search-forward "^begin [0-9]+ " nil t)
638 (if (looking-at ".+$")
639 (buffer-substring (match-beginning 0)(match-end 0))
644 (defun mime-raw-get-subject (param &optional encoding)
645 (or (std11-find-field-body '("Content-Description" "Subject"))
647 (if (or (and (setq ret (mime/Content-Disposition))
648 (setq ret (assoc "filename" (cdr ret)))
650 (setq ret (assoc "name" param))
651 (setq ret (assoc "x-name" param))
653 (std11-strip-quoted-string (cdr ret))
655 (mime-raw-get-uu-filename param encoding)
659 ;;; @ entity information
662 (defsubst mime-raw-find-entity-from-node-id (entity-node-id
663 &optional message-info)
664 "Return entity from ENTITY-NODE-ID in mime-raw-buffer.
665 If optional argument MESSAGE-INFO is not specified,
666 `mime-raw-message-info' is used."
667 (mime-raw-find-entity-from-number (reverse entity-node-id) message-info))
669 (defun mime-raw-find-entity-from-number (entity-number &optional message-info)
670 "Return entity from ENTITY-NUMBER in mime-raw-buffer.
671 If optional argument MESSAGE-INFO is not specified,
672 `mime-raw-message-info' is used."
674 (setq message-info mime-raw-message-info))
675 (if (eq entity-number t)
677 (let ((sn (car entity-number)))
680 (let ((rc (nth sn (mime-entity-children message-info))))
682 (mime-raw-find-entity-from-number (cdr entity-number) rc)
686 (defun mime-raw-find-entity-from-point (point &optional message-info)
687 "Return entity from POINT in mime-raw-buffer.
688 If optional argument MESSAGE-INFO is not specified,
689 `mime-raw-message-info' is used."
691 (setq message-info mime-raw-message-info))
692 (if (and (<= (mime-entity-point-min message-info) point)
693 (<= point (mime-entity-point-max message-info)))
694 (let ((children (mime-entity-children message-info)))
698 (mime-raw-find-entity-from-point point (car children))))
702 (setq children (cdr children)))
705 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
706 "Return entity-node-id from POINT in mime-raw-buffer.
707 If optional argument MESSAGE-INFO is not specified,
708 `mime-raw-message-info' is used."
709 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
711 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
712 "Return entity-number from POINT in mime-raw-buffer.
713 If optional argument MESSAGE-INFO is not specified,
714 `mime-raw-message-info' is used."
715 (reverse (mime-raw-point-to-entity-node-id point message-id)))
717 (defsubst mime-raw-entity-parent (entity &optional message-info)
718 "Return mother entity of ENTITY.
719 If optional argument MESSAGE-INFO is not specified,
720 `mime-raw-message-info' is used."
721 (mime-raw-find-entity-from-node-id (cdr (mime-entity-node-id entity))
724 (defun mime-raw-flatten-message-info (&optional message-info)
725 "Return list of entity in mime-raw-buffer.
726 If optional argument MESSAGE-INFO is not specified,
727 `mime-raw-message-info' is used."
729 (setq message-info mime-raw-message-info))
730 (let ((dest (list message-info))
731 (rcl (mime-entity-children message-info)))
733 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
734 (setq rcl (cdr rcl)))
738 ;;; @ MIME viewer mode
741 (defconst mime-view-menu-title "MIME-View")
742 (defconst mime-view-menu-list
743 '((up "Move to upper entity" mime-preview-move-to-upper)
744 (previous "Move to previous entity" mime-preview-move-to-previous)
745 (next "Move to next entity" mime-preview-move-to-next)
746 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
747 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
748 (play "Play current entity" mime-preview-play-current-entity)
749 (extract "Extract current entity" mime-preview-extract-current-entity)
750 (print "Print current entity" mime-preview-print-current-entity)
751 (x-face "Show X Face" mime-preview-display-x-face)
753 "Menu for MIME Viewer")
755 (cond (running-xemacs
756 (defvar mime-view-xemacs-popup-menu
757 (cons mime-view-menu-title
760 (vector (nth 1 item)(nth 2 item) t)
762 mime-view-menu-list)))
763 (defun mime-view-xemacs-popup-menu (event)
764 "Popup the menu in the MIME Viewer buffer"
766 (select-window (event-window event))
767 (set-buffer (event-buffer event))
768 (popup-menu 'mime-view-xemacs-popup-menu))
769 (defvar mouse-button-2 'button2)
772 (defvar mouse-button-2 [mouse-2])
775 (defun mime-view-define-keymap (&optional default)
776 (let ((mime-view-mode-map (if (keymapp default)
777 (copy-keymap default)
780 (define-key mime-view-mode-map
781 "u" (function mime-preview-move-to-upper))
782 (define-key mime-view-mode-map
783 "p" (function mime-preview-move-to-previous))
784 (define-key mime-view-mode-map
785 "n" (function mime-preview-move-to-next))
786 (define-key mime-view-mode-map
787 "\e\t" (function mime-preview-move-to-previous))
788 (define-key mime-view-mode-map
789 "\t" (function mime-preview-move-to-next))
790 (define-key mime-view-mode-map
791 " " (function mime-preview-scroll-up-entity))
792 (define-key mime-view-mode-map
793 "\M- " (function mime-preview-scroll-down-entity))
794 (define-key mime-view-mode-map
795 "\177" (function mime-preview-scroll-down-entity))
796 (define-key mime-view-mode-map
797 "\C-m" (function mime-preview-next-line-entity))
798 (define-key mime-view-mode-map
799 "\C-\M-m" (function mime-preview-previous-line-entity))
800 (define-key mime-view-mode-map
801 "v" (function mime-preview-play-current-entity))
802 (define-key mime-view-mode-map
803 "e" (function mime-preview-extract-current-entity))
804 (define-key mime-view-mode-map
805 "\C-c\C-p" (function mime-preview-print-current-entity))
806 (define-key mime-view-mode-map
807 "a" (function mime-preview-follow-current-entity))
808 (define-key mime-view-mode-map
809 "q" (function mime-preview-quit))
810 (define-key mime-view-mode-map
811 "h" (function mime-preview-show-summary))
812 (define-key mime-view-mode-map
813 "\C-c\C-x" (function mime-preview-kill-buffer))
814 ;; (define-key mime-view-mode-map
815 ;; "<" (function beginning-of-buffer))
816 ;; (define-key mime-view-mode-map
817 ;; ">" (function end-of-buffer))
818 (define-key mime-view-mode-map
819 "?" (function describe-mode))
820 (define-key mime-view-mode-map
821 [tab] (function mime-preview-move-to-next))
822 (define-key mime-view-mode-map
823 [delete] (function mime-preview-scroll-down-entity))
824 (define-key mime-view-mode-map
825 [backspace] (function mime-preview-scroll-down-entity))
826 (if (functionp default)
827 (cond (running-xemacs
828 (set-keymap-default-binding mime-view-mode-map default)
831 (setq mime-view-mode-map
832 (append mime-view-mode-map (list (cons t default))))
835 (define-key mime-view-mode-map
836 mouse-button-2 (function mime-button-dispatcher))
838 (cond (running-xemacs
839 (define-key mime-view-mode-map
840 mouse-button-3 (function mime-view-xemacs-popup-menu))
842 ((>= emacs-major-version 19)
843 (define-key mime-view-mode-map [menu-bar mime-view]
844 (cons mime-view-menu-title
845 (make-sparse-keymap mime-view-menu-title)))
848 (define-key mime-view-mode-map
849 (vector 'menu-bar 'mime-view (car item))
850 (cons (nth 1 item)(nth 2 item))
853 (reverse mime-view-menu-list)
856 (use-local-map mime-view-mode-map)
857 (run-hooks 'mime-view-define-keymap-hook)
860 (defsubst mime-maybe-hide-echo-buffer ()
861 "Clear mime-echo buffer and delete window for it."
862 (let ((buf (get-buffer mime-echo-buffer-name)))
867 (let ((win (get-buffer-window buf)))
874 (defun mime-view-mode (&optional mother ctl encoding ibuf obuf
875 default-keymap-or-function)
876 "Major mode for viewing MIME message.
878 Here is a list of the standard keys for mime-view-mode.
883 u Move to upper content
884 p or M-TAB Move to previous content
885 n or TAB Move to next content
886 SPC Scroll up or move to next content
887 M-SPC or DEL Scroll down or move to previous content
888 RET Move to next line
889 M-RET Move to previous line
890 v Decode current content as `play mode'
891 e Decode current content as `extract mode'
892 C-c C-p Decode current content as `print mode'
893 a Followup to current content.
896 button-2 Move to point under the mouse cursor
897 and decode current content as `play mode'
900 (mime-maybe-hide-echo-buffer)
901 (let ((ret (mime-view-setup-buffers ctl encoding ibuf obuf))
902 (win-conf (current-window-configuration))
905 (switch-to-buffer ret)
906 (setq mime-preview-original-window-configuration win-conf)
909 (setq mime-mother-buffer mother)
911 (mime-view-define-keymap default-keymap-or-function)
913 (next-single-property-change (point-min) 'mime-view-entity)))
916 (goto-char (point-min))
917 (search-forward "\n\n" nil t)
919 (run-hooks 'mime-view-mode-hook)
926 (autoload 'mime-preview-play-current-entity "mime-play"
927 "Play current entity." t)
929 (defun mime-preview-extract-current-entity ()
930 "Extract current entity into file (maybe).
931 It decodes current entity to call internal or external method as
932 \"extract\" mode. The method is selected from variable
933 `mime-acting-condition'."
935 (mime-preview-play-current-entity "extract")
938 (defun mime-preview-print-current-entity ()
939 "Print current entity (maybe).
940 It decodes current entity to call internal or external method as
941 \"print\" mode. The method is selected from variable
942 `mime-acting-condition'."
944 (mime-preview-play-current-entity "print")
951 (defun mime-preview-original-major-mode ()
952 "Return major-mode of original buffer.
953 If a current buffer has mime-mother-buffer, return original major-mode
954 of the mother-buffer."
955 (if mime-mother-buffer
957 (set-buffer mime-mother-buffer)
958 (mime-preview-original-major-mode)
960 mime-preview-original-major-mode))
962 (defun mime-preview-follow-current-entity ()
963 "Write follow message to current entity.
964 It calls following-method selected from variable
965 `mime-view-following-method-alist'."
967 (let ((message-info (get-text-property (point-min) 'mime-view-entity))
969 (while (null (setq entity
970 (get-text-property (point) 'mime-view-entity)))
974 (previous-single-property-change (point) 'mime-view-entity))
976 (entity-node-id (mime-entity-node-id entity))
977 (len (length entity-node-id))
981 (if (eq (next-single-property-change (point-min)
987 ((eq (next-single-property-change p-beg 'mime-view-entity)
991 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
993 (setq p-end (point-max))
995 ((null entity-node-id)
996 (setq p-end (point-max))
1004 (next-single-property-change
1005 (point) 'mime-view-entity))
1007 (let ((rc (mime-entity-node-id
1008 (get-text-property (point)
1009 'mime-view-entity))))
1010 (or (equal entity-node-id
1011 (nthcdr (- (length rc) len) rc))
1016 (setq p-end (point-max))
1019 (let* ((mode (mime-preview-original-major-mode))
1021 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1023 (the-buf (current-buffer))
1024 (a-buf mime-raw-buffer)
1027 (set-buffer (setq new-buf (get-buffer-create new-name)))
1029 (insert-buffer-substring the-buf p-beg p-end)
1030 (goto-char (point-min))
1031 (if (mime-view-header-visible-p entity message-info)
1032 (delete-region (goto-char (point-min))
1033 (if (re-search-forward "^$" nil t)
1037 (goto-char (point-min))
1039 (goto-char (point-min))
1040 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1048 (mime-raw-find-entity-from-node-id entity-node-id))
1051 (mime-entity-point-min ci)
1052 (mime-entity-point-max ci)
1054 (std11-header-string-except
1056 (apply (function regexp-or) fields)
1059 (eq (mime-entity-media-type ci) 'message)
1060 (eq (mime-entity-media-subtype ci) 'rfc822))
1066 (setq fields (std11-collect-field-names)
1067 entity-node-id (cdr entity-node-id))
1070 (let ((rest mime-view-following-required-fields-list))
1072 (let ((field-name (car rest)))
1073 (or (std11-field-body field-name)
1079 (set-buffer the-buf)
1080 (set-buffer mime-mother-buffer)
1081 (set-buffer mime-raw-buffer)
1082 (std11-field-body field-name)
1086 (setq rest (cdr rest))
1088 (eword-decode-header)
1090 (let ((f (cdr (assq mode mime-view-following-method-alist))))
1095 "Sorry, following method for %s is not implemented yet."
1104 (defun mime-preview-display-x-face ()
1106 (save-window-excursion
1107 (set-buffer mime-raw-buffer)
1108 (mime-view-x-face-function)
1115 (defun mime-preview-move-to-upper ()
1116 "Move to upper entity.
1117 If there is no upper entity, call function `mime-preview-quit'."
1120 (while (null (setq cinfo
1121 (get-text-property (point) 'mime-view-entity)))
1124 (let ((r (mime-raw-find-entity-from-node-id
1125 (cdr (mime-entity-node-id cinfo))
1126 (get-text-property 1 'mime-view-entity)))
1129 (while (setq point (previous-single-property-change
1130 (point) 'mime-view-entity))
1132 (if (eq r (get-text-property (point) 'mime-view-entity))
1139 (defun mime-preview-move-to-previous ()
1140 "Move to previous entity.
1141 If there is no previous entity, it calls function registered in
1142 variable `mime-view-over-to-previous-method-alist'."
1144 (while (null (get-text-property (point) 'mime-view-entity))
1148 (previous-single-property-change (point) 'mime-view-entity)))
1151 (let ((f (assq mime-preview-original-major-mode
1152 mime-view-over-to-previous-method-alist)))
1158 (defun mime-preview-move-to-next ()
1159 "Move to next entity.
1160 If there is no previous entity, it calls function registered in
1161 variable `mime-view-over-to-next-method-alist'."
1163 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1166 (let ((f (assq mime-preview-original-major-mode
1167 mime-view-over-to-next-method-alist)))
1173 (defun mime-preview-scroll-up-entity (&optional h)
1174 "Scroll up current entity.
1175 If reached to (point-max), it calls function registered in variable
1176 `mime-view-over-to-next-method-alist'."
1179 (setq h (1- (window-height)))
1181 (if (= (point) (point-max))
1182 (let ((f (assq mime-preview-original-major-mode
1183 mime-view-over-to-next-method-alist)))
1188 (or (next-single-property-change (point) 'mime-view-entity)
1191 (if (> (point) point)
1196 (defun mime-preview-scroll-down-entity (&optional h)
1197 "Scroll down current entity.
1198 If reached to (point-min), it calls function registered in variable
1199 `mime-view-over-to-previous-method-alist'."
1202 (setq h (1- (window-height)))
1204 (if (= (point) (point-min))
1205 (let ((f (assq mime-preview-original-major-mode
1206 mime-view-over-to-previous-method-alist)))
1213 (while (> (point) 1)
1215 (previous-single-property-change (point)
1221 (setq point (point-min))
1223 (forward-line (- h))
1224 (if (< (point) point)
1228 (defun mime-preview-next-line-entity ()
1230 (mime-preview-scroll-up-entity 1)
1233 (defun mime-preview-previous-line-entity ()
1235 (mime-preview-scroll-down-entity 1)
1242 (defun mime-preview-quit ()
1243 "Quit from MIME-preview buffer.
1244 It calls function registered in variable
1245 `mime-preview-quitting-method-alist'."
1247 (let ((r (assq mime-preview-original-major-mode
1248 mime-preview-quitting-method-alist)))
1253 (defun mime-preview-show-summary ()
1255 It calls function registered in variable
1256 `mime-view-show-summary-method'."
1258 (let ((r (assq mime-preview-original-major-mode
1259 mime-view-show-summary-method)))
1264 (defun mime-preview-kill-buffer ()
1266 (kill-buffer (current-buffer))
1273 (provide 'mime-view)
1275 (run-hooks 'mime-view-load-hook)
1277 ;;; mime-view.el ends here