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 (defvar mime-view-content-button-visible-ctype-list
103 '("application/pgp"))
105 (defun mime-view-insert-entity-button (entity message-info subj)
106 "Insert entity-button of ENTITY."
107 (let ((entity-node-id (mime-entity-node-id entity))
108 (params (mime-entity-parameters entity)))
110 (let ((access-type (assoc "access-type" params))
111 (num (or (cdr (assoc "x-part-number" params))
112 (if (consp entity-node-id)
115 (format "%s" (1+ num))
117 (reverse entity-node-id) ".")
121 (let ((server (assoc "server" params)))
122 (setq access-type (cdr access-type))
124 (format "%s %s ([%s] %s)"
125 num subj access-type (cdr server))
126 (let ((site (cdr (assoc "site" params)))
127 (dir (cdr (assoc "directory" params)))
129 (format "%s %s ([%s] %s:%s)"
130 num subj access-type site dir)
134 (let ((media-type (mime-entity-media-type entity))
135 (media-subtype (mime-entity-media-subtype entity))
136 (charset (cdr (assoc "charset" params)))
137 (encoding (mime-entity-encoding entity)))
141 (format " <%s/%s%s%s>"
142 media-type media-subtype
144 (concat "; " charset)
147 (concat " (" encoding ")")
149 (if (>= (+ (current-column)(length rest))(window-width))
153 (function mime-preview-play-current-entity))
156 (defun mime-view-entity-button-function (entity message-info subj)
157 "Insert entity-button of ENTITY conditionally.
158 Please redefine this function if you want to change default setting."
159 (let ((entity-node-id (mime-entity-node-id entity))
160 (media-type (mime-entity-media-type entity))
161 (media-subtype (mime-entity-media-subtype entity)))
162 (or (null entity-node-id)
163 (and (eq media-type 'application)
164 (or (eq media-subtype 'x-selection)
165 (and (eq media-subtype 'octet-stream)
167 (mime-raw-find-entity-from-node-id
168 (cdr entity-node-id) message-info)))
169 (and (eq (mime-entity-media-type mother-entity)
171 (eq (mime-entity-media-subtype mother-entity)
174 (mime-view-insert-entity-button entity message-info subj)
181 ;;; @@ predicate function
184 (defvar mime-view-childrens-header-showing-Content-Type-list
185 '("message/rfc822" "message/news"))
187 (defun mime-view-header-visible-p (entity message-info)
188 "Return non-nil if header of ENTITY is visible."
189 (let ((entity-node-id (mime-entity-node-id entity)))
190 (or (null entity-node-id)
191 (member (mime-entity-type/subtype
192 (mime-raw-find-entity-from-node-id
193 (cdr entity-node-id) message-info))
194 mime-view-childrens-header-showing-Content-Type-list)
197 ;;; @@ entity header filter
200 (defvar mime-view-content-header-filter-alist nil)
202 (defun mime-view-default-content-header-filter ()
203 (mime-view-cut-header)
204 (eword-decode-header)
207 (defun mime-view-display-header (beg end)
209 (narrow-to-region (point)(point))
210 (insert-buffer-substring mime-raw-buffer beg end)
211 (let ((f (cdr (assq mime-preview-original-major-mode
212 mime-view-content-header-filter-alist))))
215 (mime-view-default-content-header-filter)
217 (run-hooks 'mime-view-content-header-filter-hook)
220 ;;; @@ entity field cutter
223 (defvar mime-view-ignored-field-list
224 '(".*Received" ".*Path" ".*Id" "References"
225 "Replied" "Errors-To"
226 "Lines" "Sender" ".*Host" "Xref"
227 "Content-Type" "Precedence"
229 "All fields that match this list will be hidden in MIME preview buffer.
230 Each elements are regexp of field-name.")
232 (defvar mime-view-ignored-field-regexp
234 (apply (function regexp-or) mime-view-ignored-field-list)
237 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
238 "All fields that match this list will be displayed in MIME preview buffer.
239 Each elements are regexp of field-name.")
241 (defun mime-view-cut-header ()
242 (goto-char (point-min))
243 (while (re-search-forward mime-view-ignored-field-regexp nil t)
244 (let* ((beg (match-beginning 0))
246 (name (buffer-substring beg end))
249 (let ((rest mime-view-visible-field-list))
251 (if (string-match (car rest) name)
254 (setq rest (cdr rest))))
257 (if (re-search-forward "^\\([^ \t]\\|$\\)" nil t)
266 ;;; @@ predicate function
269 (defvar mime-view-body-visible-condition
280 (octet-stream encoding
290 "Condition-tree to be able to display body of entity.")
292 (defun mime-view-body-visible-p (entity message-info)
293 "Return non-nil if body of ENTITY is visible."
295 mime-view-body-visible-condition
296 (list* (cons 'type (mime-entity-media-type entity))
297 (cons 'subtype (mime-entity-media-subtype entity))
298 (cons 'encoding (mime-entity-encoding entity))
299 (cons 'major-mode major-mode)
300 (mime-entity-parameters entity))))
302 ;; (defvar mime-view-visible-media-type-list
303 ;; '("text/plain" nil "text/richtext" "text/enriched"
304 ;; "text/rfc822-headers"
305 ;; "text/x-latex" "application/x-latex"
306 ;; "message/delivery-status"
307 ;; "application/pgp" "text/x-pgp"
308 ;; "application/octet-stream"
309 ;; "application/x-selection" "application/x-comment")
310 ;; "*List of media-types to be able to display in MIME-preview buffer.
311 ;; Each elements are string of TYPE/SUBTYPE, e.g. \"text/plain\".")
313 ;; (defun mime-view-body-visible-p (entity message-info)
314 ;; "Return non-nil if body of ENTITY is visible."
315 ;; (let ((media-type (mime-entity-media-type entity))
316 ;; (media-subtype (mime-entity-media-subtype entity))
317 ;; (ctype (mime-entity-type/subtype entity)))
318 ;; (and (member ctype mime-view-visible-media-type-list)
319 ;; (if (and (eq media-type 'application)
320 ;; (eq media-subtype 'octet-stream))
321 ;; (member (mime-entity-encoding entity) '(nil "7bit" "8bit"))
328 (defvar mime-view-content-filter-alist
329 '(("text/enriched" . mime-view-filter-for-text/enriched)
330 ("text/richtext" . mime-view-filter-for-text/richtext)
331 (t . mime-view-filter-for-text/plain)
333 "Alist of media-types vs. corresponding MIME-preview filter functions.
334 Each element looks like (TYPE/SUBTYPE . FUNCTION) or (t . FUNCTION).
335 TYPE/SUBTYPE is a string of media-type and FUNCTION is a filter
336 function. t means default media-type.")
338 (defun mime-view-display-body (start end entity message-info subj)
340 (narrow-to-region (point-max)(point-max))
341 (insert-buffer-substring mime-raw-buffer start end)
342 (let* ((ctype (mime-entity-type/subtype entity))
343 (params (mime-entity-parameters entity))
344 (encoding (mime-entity-encoding entity))
345 (f (cdr (or (assoc ctype mime-view-content-filter-alist)
346 (assq t mime-view-content-filter-alist)))))
348 (funcall f ctype params encoding))
351 (defvar mime-view-announcement-for-message/partial
352 (if (and (>= emacs-major-version 19) window-system)
354 \[[ This is message/partial style split message. ]]
355 \[[ Please press `v' key in this buffer ]]
356 \[[ or click here by mouse button-2. ]]"
358 \[[ This is message/partial style split message. ]]
359 \[[ Please press `v' key in this buffer. ]]"
362 (defun mime-view-insert-message/partial-button ()
364 (goto-char (point-max))
365 (if (not (search-backward "\n\n" nil t))
368 (goto-char (point-max))
369 (narrow-to-region (point-max)(point-max))
370 (insert mime-view-announcement-for-message/partial)
371 (mime-add-button (point-min)(point-max)
372 #'mime-preview-play-current-entity)
376 ;;; @ entity separator
379 (defun mime-view-entity-separator-function (entity message-info)
380 "Insert entity-separator of ENTITY conditionally.
381 Please redefine this function if you want to change default setting."
382 (or (mime-view-header-visible-p entity message-info)
383 (mime-view-body-visible-p entity message-info)
385 (goto-char (point-max))
390 ;;; @ acting-condition
393 (defvar mime-acting-condition
394 '(((type . text)(subtype . plain)
395 (method "tm-plain" nil 'file "" 'encoding 'mode 'name)
396 (mode "play" "print")
398 ((type . text)(subtype . html)
399 (method "tm-html" nil 'file "" 'encoding 'mode 'name)
402 ((type . text)(subtype . x-rot13-47)
403 (method . mime-method-to-display-caesar)
406 ((type . text)(subtype . x-rot13-47-48)
407 (method . mime-method-to-display-caesar)
411 ((type . audio)(subtype . basic)
412 (method "tm-au" nil 'file "" 'encoding 'mode 'name)
417 (method "tm-image" nil 'file "" 'encoding 'mode 'name)
418 (mode "play" "print")
421 ((type . video)(subtype . mpeg)
422 (method "tm-mpeg" nil 'file "" 'encoding 'mode 'name)
426 ((type . application)(subtype . postscript)
427 (method "tm-ps" nil 'file "" 'encoding 'mode 'name)
428 (mode "play" "print")
430 ((type . application)(subtype . octet-stream)
431 (method . mime-method-to-save)(mode "play" "print")
434 ((type . message)(subtype . external-body)
435 ("access-type" . "anon-ftp")
436 (method . mime-method-to-display-message/external-ftp)
438 ((type . message)(subtype . rfc822)
439 (method . mime-method-to-display-message/rfc822)
442 ((type . message)(subtype . partial)
443 (method . mime-method-to-store-message/partial)
447 ((method "metamail" t "-m" "tm" "-x" "-d" "-z" "-e" 'file)
450 ((method . mime-method-to-save)(mode . "extract"))
454 ;;; @ quitting method
457 (defvar mime-preview-quitting-method-alist
458 '((mime-show-message-mode
459 . mime-preview-quitting-method-for-mime-show-message-mode))
460 "Alist of major-mode vs. quitting-method of mime-view.")
462 (defvar mime-view-over-to-previous-method-alist nil)
463 (defvar mime-view-over-to-next-method-alist nil)
465 (defvar mime-view-show-summary-method nil
466 "Alist of major-mode vs. show-summary-method.")
469 ;;; @ following method
472 (defvar mime-view-following-method-alist nil
473 "Alist of major-mode vs. following-method of mime-view.")
475 (defvar mime-view-following-required-fields-list
482 ;; hack from Gnus 5.0.4.
484 (defvar mime-view-x-face-to-pbm-command
485 "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm")
487 (defvar mime-view-x-face-command
488 (concat mime-view-x-face-to-pbm-command
490 "String to be executed to display an X-Face field.
491 The command will be executed in a sub-shell asynchronously.
492 The compressed face will be piped to this command.")
494 (defun mime-view-x-face-function ()
495 "Function to display X-Face field. You can redefine to customize."
496 ;; 1995/10/12 (c.f. tm-eng:130)
497 ;; fixed by Eric Ding <ericding@San-Jose.ate.slb.com>
499 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
501 (goto-char (point-min))
502 (if (re-search-forward "^X-Face:[ \t]*" nil t)
503 (let ((beg (match-end 0))
504 (end (std11-field-end))
506 (call-process-region beg end "sh" nil 0 nil
507 "-c" mime-view-x-face-command)
514 (defvar mime-view-uuencode-encoding-name-list '("x-uue" "x-uuencode"))
516 (defvar mime-raw-buffer-coding-system-alist
517 `((t . ,(mime-charset-to-coding-system default-mime-charset)))
518 "Alist of major-mode vs. corresponding coding-system of `mime-raw-buffer'.")
524 (defvar mime-view-redisplay nil)
526 (defun mime-view-setup-buffers (&optional ctl encoding ibuf obuf)
532 (or mime-view-redisplay
533 (setq mime-raw-message-info (mime-parse-message ctl encoding))
535 (let* ((message-info mime-raw-message-info)
536 (pcl (mime-raw-flatten-message-info message-info))
537 (the-buf (current-buffer))
541 (setq obuf (concat "*Preview-" (buffer-name the-buf) "*")))
542 (set-buffer (get-buffer-create obuf))
543 (let ((inhibit-read-only t))
544 ;;(setq buffer-read-only nil)
547 (setq mime-raw-buffer the-buf)
548 (setq mime-preview-original-major-mode mode)
549 (setq major-mode 'mime-view-mode)
550 (setq mode-name "MIME-View")
552 (mime-view-display-entity (car pcl) message-info the-buf obuf)
555 (set-buffer-modified-p nil)
557 (setq buffer-read-only t)
560 (setq mime-preview-buffer obuf)
563 (defun mime-view-display-entity (entity message-info ibuf obuf)
565 (let* ((beg (mime-entity-point-min entity))
566 (end (mime-entity-point-max entity))
567 (media-type (mime-entity-media-type entity))
568 (media-subtype (mime-entity-media-subtype entity))
569 (ctype (if media-type
571 (format "%s/%s" media-type media-subtype)
572 (symbol-name media-type)
574 (params (mime-entity-parameters entity))
575 (encoding (mime-entity-encoding entity))
576 (entity-node-id (mime-entity-node-id entity))
580 (setq he (if (re-search-forward "^$" nil t)
587 (narrow-to-region beg end)
590 (mime-raw-get-subject params encoding)))
594 (narrow-to-region nb nb)
595 (mime-view-entity-button-function entity message-info subj)
596 (if (mime-view-header-visible-p entity message-info)
597 (mime-view-display-header beg he)
599 (if (and (null entity-node-id)
601 ctype mime-view-content-button-visible-ctype-list))
603 (goto-char (point-max))
604 (mime-view-insert-entity-button entity message-info subj)
606 (cond ((mime-view-body-visible-p entity message-info)
607 (mime-view-display-body he end entity message-info subj)
609 ((and (eq media-type 'message)(eq media-subtype 'partial))
610 (mime-view-insert-message/partial-button)
612 ((and (null entity-node-id)
613 (null (mime-entity-children message-info))
615 (goto-char (point-max))
616 (mime-view-insert-entity-button entity message-info subj)
618 (mime-view-entity-separator-function entity message-info)
619 (setq ne (point-max))
621 (put-text-property nb ne 'mime-view-raw-buffer ibuf)
622 (put-text-property nb ne 'mime-view-entity entity)
626 (defun mime-raw-get-uu-filename (param &optional encoding)
627 (if (member (or encoding
628 (cdr (assq 'encoding param))
630 mime-view-uuencode-encoding-name-list)
632 (or (if (re-search-forward "^begin [0-9]+ " nil t)
633 (if (looking-at ".+$")
634 (buffer-substring (match-beginning 0)(match-end 0))
639 (defun mime-raw-get-subject (param &optional encoding)
640 (or (std11-find-field-body '("Content-Description" "Subject"))
642 (if (or (and (setq ret (mime/Content-Disposition))
643 (setq ret (assoc "filename" (cdr ret)))
645 (setq ret (assoc "name" param))
646 (setq ret (assoc "x-name" param))
648 (std11-strip-quoted-string (cdr ret))
650 (mime-raw-get-uu-filename param encoding)
654 ;;; @ entity information
657 (defsubst mime-raw-find-entity-from-node-id (entity-node-id
658 &optional message-info)
659 "Return entity from ENTITY-NODE-ID in mime-raw-buffer.
660 If optional argument MESSAGE-INFO is not specified,
661 `mime-raw-message-info' is used."
662 (mime-raw-find-entity-from-number (reverse entity-node-id) message-info))
664 (defun mime-raw-find-entity-from-number (entity-number &optional message-info)
665 "Return entity from ENTITY-NUMBER in mime-raw-buffer.
666 If optional argument MESSAGE-INFO is not specified,
667 `mime-raw-message-info' is used."
669 (setq message-info mime-raw-message-info))
670 (if (eq entity-number t)
672 (let ((sn (car entity-number)))
675 (let ((rc (nth sn (mime-entity-children message-info))))
677 (mime-raw-find-entity-from-number (cdr entity-number) rc)
681 (defun mime-raw-find-entity-from-point (point &optional message-info)
682 "Return entity from POINT in mime-raw-buffer.
683 If optional argument MESSAGE-INFO is not specified,
684 `mime-raw-message-info' is used."
686 (setq message-info mime-raw-message-info))
687 (if (and (<= (mime-entity-point-min message-info) point)
688 (<= point (mime-entity-point-max message-info)))
689 (let ((children (mime-entity-children message-info)))
693 (mime-raw-find-entity-from-point point (car children))))
697 (setq children (cdr children)))
700 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
701 "Return entity-node-id from POINT in mime-raw-buffer.
702 If optional argument MESSAGE-INFO is not specified,
703 `mime-raw-message-info' is used."
704 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
706 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
707 "Return entity-number from POINT in mime-raw-buffer.
708 If optional argument MESSAGE-INFO is not specified,
709 `mime-raw-message-info' is used."
710 (reverse (mime-raw-point-to-entity-node-id point message-id)))
712 (defun mime-raw-flatten-message-info (&optional message-info)
713 "Return list of entity in mime-raw-buffer.
714 If optional argument MESSAGE-INFO is not specified,
715 `mime-raw-message-info' is used."
717 (setq message-info mime-raw-message-info))
718 (let ((dest (list message-info))
719 (rcl (mime-entity-children message-info)))
721 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
722 (setq rcl (cdr rcl)))
726 ;;; @ MIME viewer mode
729 (defconst mime-view-menu-title "MIME-View")
730 (defconst mime-view-menu-list
731 '((up "Move to upper entity" mime-preview-move-to-upper)
732 (previous "Move to previous entity" mime-preview-move-to-previous)
733 (next "Move to next entity" mime-preview-move-to-next)
734 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
735 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
736 (play "Play current entity" mime-preview-play-current-entity)
737 (extract "Extract current entity" mime-preview-extract-current-entity)
738 (print "Print current entity" mime-preview-print-current-entity)
739 (x-face "Show X Face" mime-preview-display-x-face)
741 "Menu for MIME Viewer")
743 (cond (running-xemacs
744 (defvar mime-view-xemacs-popup-menu
745 (cons mime-view-menu-title
748 (vector (nth 1 item)(nth 2 item) t)
750 mime-view-menu-list)))
751 (defun mime-view-xemacs-popup-menu (event)
752 "Popup the menu in the MIME Viewer buffer"
754 (select-window (event-window event))
755 (set-buffer (event-buffer event))
756 (popup-menu 'mime-view-xemacs-popup-menu))
757 (defvar mouse-button-2 'button2)
760 (defvar mouse-button-2 [mouse-2])
763 (defun mime-view-define-keymap (&optional default)
764 (let ((mime-view-mode-map (if (keymapp default)
765 (copy-keymap default)
768 (define-key mime-view-mode-map
769 "u" (function mime-preview-move-to-upper))
770 (define-key mime-view-mode-map
771 "p" (function mime-preview-move-to-previous))
772 (define-key mime-view-mode-map
773 "n" (function mime-preview-move-to-next))
774 (define-key mime-view-mode-map
775 "\e\t" (function mime-preview-move-to-previous))
776 (define-key mime-view-mode-map
777 "\t" (function mime-preview-move-to-next))
778 (define-key mime-view-mode-map
779 " " (function mime-preview-scroll-up-entity))
780 (define-key mime-view-mode-map
781 "\M- " (function mime-preview-scroll-down-entity))
782 (define-key mime-view-mode-map
783 "\177" (function mime-preview-scroll-down-entity))
784 (define-key mime-view-mode-map
785 "\C-m" (function mime-preview-next-line-entity))
786 (define-key mime-view-mode-map
787 "\C-\M-m" (function mime-preview-previous-line-entity))
788 (define-key mime-view-mode-map
789 "v" (function mime-preview-play-current-entity))
790 (define-key mime-view-mode-map
791 "e" (function mime-preview-extract-current-entity))
792 (define-key mime-view-mode-map
793 "\C-c\C-p" (function mime-preview-print-current-entity))
794 (define-key mime-view-mode-map
795 "a" (function mime-preview-follow-current-entity))
796 (define-key mime-view-mode-map
797 "q" (function mime-preview-quit))
798 (define-key mime-view-mode-map
799 "h" (function mime-preview-show-summary))
800 (define-key mime-view-mode-map
801 "\C-c\C-x" (function mime-preview-kill-buffer))
802 ;; (define-key mime-view-mode-map
803 ;; "<" (function beginning-of-buffer))
804 ;; (define-key mime-view-mode-map
805 ;; ">" (function end-of-buffer))
806 (define-key mime-view-mode-map
807 "?" (function describe-mode))
808 (define-key mime-view-mode-map
809 [tab] (function mime-preview-move-to-next))
810 (define-key mime-view-mode-map
811 [delete] (function mime-preview-scroll-down-entity))
812 (define-key mime-view-mode-map
813 [backspace] (function mime-preview-scroll-down-entity))
814 (if (functionp default)
815 (cond (running-xemacs
816 (set-keymap-default-binding mime-view-mode-map default)
819 (setq mime-view-mode-map
820 (append mime-view-mode-map (list (cons t default))))
823 (define-key mime-view-mode-map
824 mouse-button-2 (function mime-button-dispatcher))
826 (cond (running-xemacs
827 (define-key mime-view-mode-map
828 mouse-button-3 (function mime-view-xemacs-popup-menu))
830 ((>= emacs-major-version 19)
831 (define-key mime-view-mode-map [menu-bar mime-view]
832 (cons mime-view-menu-title
833 (make-sparse-keymap mime-view-menu-title)))
836 (define-key mime-view-mode-map
837 (vector 'menu-bar 'mime-view (car item))
838 (cons (nth 1 item)(nth 2 item))
841 (reverse mime-view-menu-list)
844 (use-local-map mime-view-mode-map)
845 (run-hooks 'mime-view-define-keymap-hook)
848 (defsubst mime-maybe-hide-echo-buffer ()
849 "Clear mime-echo buffer and delete window for it."
850 (let ((buf (get-buffer mime-echo-buffer-name)))
855 (let ((win (get-buffer-window buf)))
862 (defun mime-view-mode (&optional mother ctl encoding ibuf obuf
863 default-keymap-or-function)
864 "Major mode for viewing MIME message.
866 Here is a list of the standard keys for mime-view-mode.
871 u Move to upper content
872 p or M-TAB Move to previous content
873 n or TAB Move to next content
874 SPC Scroll up or move to next content
875 M-SPC or DEL Scroll down or move to previous content
876 RET Move to next line
877 M-RET Move to previous line
878 v Decode current content as `play mode'
879 e Decode current content as `extract mode'
880 C-c C-p Decode current content as `print mode'
881 a Followup to current content.
884 button-2 Move to point under the mouse cursor
885 and decode current content as `play mode'
888 (mime-maybe-hide-echo-buffer)
889 (let ((ret (mime-view-setup-buffers ctl encoding ibuf obuf))
890 (win-conf (current-window-configuration))
893 (switch-to-buffer ret)
894 (setq mime-preview-original-window-configuration win-conf)
897 (setq mime-mother-buffer mother)
899 (mime-view-define-keymap default-keymap-or-function)
901 (next-single-property-change (point-min) 'mime-view-entity)))
904 (goto-char (point-min))
905 (search-forward "\n\n" nil t)
907 (run-hooks 'mime-view-mode-hook)
914 (autoload 'mime-preview-play-current-entity "mime-play"
915 "Play current entity." t)
917 (defun mime-preview-extract-current-entity ()
918 "Extract current entity into file (maybe).
919 It decodes current entity to call internal or external method as
920 \"extract\" mode. The method is selected from variable
921 `mime-acting-condition'."
923 (mime-preview-play-current-entity "extract")
926 (defun mime-preview-print-current-entity ()
927 "Print current entity (maybe).
928 It decodes current entity to call internal or external method as
929 \"print\" mode. The method is selected from variable
930 `mime-acting-condition'."
932 (mime-preview-play-current-entity "print")
939 (defun mime-preview-original-major-mode ()
940 "Return major-mode of original buffer.
941 If a current buffer has mime-mother-buffer, return original major-mode
942 of the mother-buffer."
943 (if mime-mother-buffer
945 (set-buffer mime-mother-buffer)
946 (mime-preview-original-major-mode)
948 mime-preview-original-major-mode))
950 (defun mime-preview-follow-current-entity ()
951 "Write follow message to current entity.
952 It calls following-method selected from variable
953 `mime-view-following-method-alist'."
955 (let ((message-info (get-text-property (point-min) 'mime-view-entity))
957 (while (null (setq entity
958 (get-text-property (point) 'mime-view-entity)))
962 (previous-single-property-change (point) 'mime-view-entity))
964 (entity-node-id (mime-entity-node-id entity))
965 (len (length entity-node-id))
969 (if (eq (next-single-property-change (point-min)
975 ((eq (next-single-property-change p-beg 'mime-view-entity)
979 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
981 (setq p-end (point-max))
983 ((null entity-node-id)
984 (setq p-end (point-max))
992 (next-single-property-change
993 (point) 'mime-view-entity))
995 (let ((rc (mime-entity-node-id
996 (get-text-property (point)
997 'mime-view-entity))))
998 (or (equal entity-node-id
999 (nthcdr (- (length rc) len) rc))
1004 (setq p-end (point-max))
1007 (let* ((mode (mime-preview-original-major-mode))
1009 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1011 (the-buf (current-buffer))
1012 (a-buf mime-raw-buffer)
1015 (set-buffer (setq new-buf (get-buffer-create new-name)))
1017 (insert-buffer-substring the-buf p-beg p-end)
1018 (goto-char (point-min))
1019 (if (mime-view-header-visible-p entity message-info)
1020 (delete-region (goto-char (point-min))
1021 (if (re-search-forward "^$" nil t)
1025 (goto-char (point-min))
1027 (goto-char (point-min))
1028 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1036 (mime-raw-find-entity-from-node-id entity-node-id))
1039 (mime-entity-point-min ci)
1040 (mime-entity-point-max ci)
1042 (std11-header-string-except
1044 (apply (function regexp-or) fields)
1047 (eq (mime-entity-media-type ci) 'message)
1048 (eq (mime-entity-media-subtype ci) 'rfc822))
1054 (setq fields (std11-collect-field-names)
1055 entity-node-id (cdr entity-node-id))
1058 (let ((rest mime-view-following-required-fields-list))
1060 (let ((field-name (car rest)))
1061 (or (std11-field-body field-name)
1067 (set-buffer the-buf)
1068 (set-buffer mime-mother-buffer)
1069 (set-buffer mime-raw-buffer)
1070 (std11-field-body field-name)
1074 (setq rest (cdr rest))
1076 (eword-decode-header)
1078 (let ((f (cdr (assq mode mime-view-following-method-alist))))
1083 "Sorry, following method for %s is not implemented yet."
1092 (defun mime-preview-display-x-face ()
1094 (save-window-excursion
1095 (set-buffer mime-raw-buffer)
1096 (mime-view-x-face-function)
1103 (defun mime-preview-move-to-upper ()
1104 "Move to upper entity.
1105 If there is no upper entity, call function `mime-preview-quit'."
1108 (while (null (setq cinfo
1109 (get-text-property (point) 'mime-view-entity)))
1112 (let ((r (mime-raw-find-entity-from-node-id
1113 (cdr (mime-entity-node-id cinfo))
1114 (get-text-property 1 'mime-view-entity)))
1117 (while (setq point (previous-single-property-change
1118 (point) 'mime-view-entity))
1120 (if (eq r (get-text-property (point) 'mime-view-entity))
1127 (defun mime-preview-move-to-previous ()
1128 "Move to previous entity.
1129 If there is no previous entity, it calls function registered in
1130 variable `mime-view-over-to-previous-method-alist'."
1132 (while (null (get-text-property (point) 'mime-view-entity))
1136 (previous-single-property-change (point) 'mime-view-entity)))
1139 (let ((f (assq mime-preview-original-major-mode
1140 mime-view-over-to-previous-method-alist)))
1146 (defun mime-preview-move-to-next ()
1147 "Move to next entity.
1148 If there is no previous entity, it calls function registered in
1149 variable `mime-view-over-to-next-method-alist'."
1151 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1154 (let ((f (assq mime-preview-original-major-mode
1155 mime-view-over-to-next-method-alist)))
1161 (defun mime-preview-scroll-up-entity (&optional h)
1162 "Scroll up current entity.
1163 If reached to (point-max), it calls function registered in variable
1164 `mime-view-over-to-next-method-alist'."
1167 (setq h (1- (window-height)))
1169 (if (= (point) (point-max))
1170 (let ((f (assq mime-preview-original-major-mode
1171 mime-view-over-to-next-method-alist)))
1176 (or (next-single-property-change (point) 'mime-view-entity)
1179 (if (> (point) point)
1184 (defun mime-preview-scroll-down-entity (&optional h)
1185 "Scroll down current entity.
1186 If reached to (point-min), it calls function registered in variable
1187 `mime-view-over-to-previous-method-alist'."
1190 (setq h (1- (window-height)))
1192 (if (= (point) (point-min))
1193 (let ((f (assq mime-preview-original-major-mode
1194 mime-view-over-to-previous-method-alist)))
1201 (while (> (point) 1)
1203 (previous-single-property-change (point)
1209 (setq point (point-min))
1211 (forward-line (- h))
1212 (if (< (point) point)
1216 (defun mime-preview-next-line-entity ()
1218 (mime-preview-scroll-up-entity 1)
1221 (defun mime-preview-previous-line-entity ()
1223 (mime-preview-scroll-down-entity 1)
1230 (defun mime-preview-quit ()
1231 "Quit from MIME-preview buffer.
1232 It calls function registered in variable
1233 `mime-preview-quitting-method-alist'."
1235 (let ((r (assq mime-preview-original-major-mode
1236 mime-preview-quitting-method-alist)))
1241 (defun mime-preview-show-summary ()
1243 It calls function registered in variable
1244 `mime-view-show-summary-method'."
1246 (let ((r (assq mime-preview-original-major-mode
1247 mime-view-show-summary-method)))
1252 (defun mime-preview-kill-buffer ()
1254 (kill-buffer (current-buffer))
1261 (provide 'mime-view)
1263 (run-hooks 'mime-view-load-hook)
1265 ;;; mime-view.el ends here