1 ;;; mime-view.el --- interactive MIME viewer for GNU Emacs
3 ;; Copyright (C) 1995,1996,1997 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 ;; Version: $Revision: 0.86 $
10 ;; Keywords: MIME, multimedia, mail, news
12 ;; This file is part of SEMI (SEMI is Emacs MIME Interfaces).
14 ;; This program is free software; you can redistribute it and/or
15 ;; modify it under the terms of the GNU General Public License as
16 ;; published by the Free Software Foundation; either version 2, or (at
17 ;; your option) any later version.
19 ;; This program is distributed in the hope that it will be useful, but
20 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
22 ;; General Public License for more details.
24 ;; You should have received a copy of the GNU General Public License
25 ;; along with GNU Emacs; see the file COPYING. If not, write to the
26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
27 ;; Boston, MA 02111-1307, USA.
34 (require 'eword-decode)
42 (defconst mime-view-RCS-ID
43 "$Id: mime-view.el,v 0.86 1997-05-08 22:37:47 morioka Exp $")
45 (defconst mime-view-version (get-version-string mime-view-RCS-ID))
51 (defvar mime/content-decoding-condition
52 '(((type . "text/plain")
53 (method "tm-plain" nil 'file 'type 'encoding 'mode 'name)
57 (method "tm-html" nil 'file 'type 'encoding 'mode 'name)
60 ((type . "text/x-rot13-47")
61 (method . mime-display-caesar)
64 ((type . "audio/basic")
65 (method "tm-au" nil 'file 'type 'encoding 'mode 'name)
69 ((type . "image/jpeg")
70 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
74 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
77 ((type . "image/tiff")
78 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
81 ((type . "image/x-tiff")
82 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
85 ((type . "image/x-xbm")
86 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
89 ((type . "image/x-pic")
90 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
93 ((type . "image/x-mag")
94 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
98 ((type . "video/mpeg")
99 (method "tm-mpeg" nil 'file 'type 'encoding 'mode 'name)
103 ((type . "application/postscript")
104 (method "tm-ps" nil 'file 'type 'encoding 'mode 'name)
105 (mode "play" "print")
107 ((type . "application/octet-stream")
108 (method "tm-file" nil 'file 'type 'encoding 'mode 'name)
109 (mode "play" "print")
112 ;;((type . "message/external-body")
113 ;; (method "xterm" nil
114 ;; "-e" "showexternal"
115 ;; 'file '"access-type" '"name" '"site" '"directory"))
116 ((type . "message/external-body")
117 ("access-type" . "anon-ftp")
118 (method . mime-article/decode-message/external-ftp)
120 ((type . "message/rfc822")
121 (method . mime-article/view-message/rfc822)
124 ((type . "message/partial")
125 (method . mime-article/decode-message/partial)
129 ((method "metamail" t "-m" "tm" "-x" "-d" "-z" "-e" 'file)
132 ((method "tm-file" nil 'file 'type 'encoding 'mode 'name)
137 (defvar mime-view-childrens-header-showing-Content-Type-list
138 '("message/rfc822" "message/news"))
140 (defvar mime-view-visible-media-type-list
141 '("text/plain" nil "text/richtext" "text/enriched"
142 "text/rfc822-headers"
143 "text/x-latex" "application/x-latex"
144 "message/delivery-status"
145 "application/pgp" "text/x-pgp"
146 "application/octet-stream"
147 "application/x-selection" "application/x-comment")
148 "*List of media-types to be able to display in MIME-View buffer.
149 Each elements are string of TYPE/SUBTYPE, e.g. \"text/plain\".")
151 (defvar mime-view-content-button-visible-ctype-list
152 '("application/pgp"))
154 (defvar mime-view-uuencode-encoding-name-list '("x-uue" "x-uuencode"))
156 (defvar mime-view-ignored-field-list
157 '(".*Received" ".*Path" ".*Id" "References"
158 "Replied" "Errors-To"
159 "Lines" "Sender" ".*Host" "Xref"
160 "Content-Type" "Precedence"
162 "All fields that match this list will be hidden in MIME preview buffer.
163 Each elements are regexp of field-name. [mime-view.el]")
165 (defvar mime-view-ignored-field-regexp
167 (apply (function regexp-or) mime-view-ignored-field-list)
170 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
171 "All fields that match this list will be displayed in MIME preview buffer.
172 Each elements are regexp of field-name.")
174 (defvar mime-view-redisplay nil)
176 (defvar mime-view-announcement-for-message/partial
177 (if (and (>= emacs-major-version 19) window-system)
179 \[[ This is message/partial style split message. ]]
180 \[[ Please press `v' key in this buffer ]]
181 \[[ or click here by mouse button-2. ]]"
183 \[[ This is message/partial style split message. ]]
184 \[[ Please press `v' key in this buffer. ]]"
188 ;;; @@ predicate functions
191 (defun mime-view-header-visible-p (rcnum cinfo)
192 "Return non-nil if header of current entity is visible."
194 (member (mime::content-info/type
195 (mime-article/rcnum-to-cinfo (cdr rcnum) cinfo))
196 mime-view-childrens-header-showing-Content-Type-list)
199 (defun mime-view-body-visible-p (rcnum cinfo &optional ctype)
203 (mime::content-info/type
204 (setq ccinfo (mime-article/rcnum-to-cinfo rcnum cinfo))
207 (and (member ctype mime-view-visible-media-type-list)
208 (if (string-equal ctype "application/octet-stream")
211 (setq ccinfo (mime-article/rcnum-to-cinfo rcnum cinfo))
213 (member (mime::content-info/encoding ccinfo)
214 '(nil "7bit" "8bit"))
223 (defun mime-view-insert-entity-button (rcnum cinfo ctype params subj encoding)
224 "Insert entity-button."
226 (narrow-to-region (point)(point))
227 (let ((access-type (assoc "access-type" params))
228 (num (or (cdr (assoc "x-part-number" params))
232 (format "%s" (1+ num))
238 (let ((server (assoc "server" params)))
239 (setq access-type (cdr access-type))
241 (insert (format "[%s %s ([%s] %s)]\n" num subj
242 access-type (cdr server)))
243 (let ((site (cdr (assoc "site" params)))
244 (dir (cdr (assoc "directory" params)))
246 (insert (format "[%s %s ([%s] %s:%s)]\n" num subj
247 access-type site dir))
251 (let ((charset (cdr (assoc "charset" params))))
252 (insert (concat "[" num " " subj))
256 (concat "; " charset)
257 (if encoding (concat " (" encoding ")"))
260 (if (>= (+ (current-column)(length rest))(window-width))
266 (mime-add-button (point-min)(1- (point-max))
267 (function mime-view-play-current-entity))
270 (defun mime-view-entity-button-function
271 (rcnum cinfo ctype params subj encoding)
272 "Insert entity button conditionally.
273 Please redefine this function if you want to change default setting."
275 (string= ctype "application/x-selection")
276 (and (string= ctype "application/octet-stream")
277 (string= (mime::content-info/type
278 (mime-article/rcnum-to-cinfo (cdr rcnum) cinfo))
279 "multipart/encrypted"))
280 (mime-view-insert-entity-button rcnum cinfo ctype params subj encoding)
284 ;;; @@ content header filter
287 (defsubst mime-view-cut-header ()
288 (goto-char (point-min))
289 (while (re-search-forward mime-view-ignored-field-regexp nil t)
290 (let* ((beg (match-beginning 0))
292 (name (buffer-substring beg end))
294 (or (member-if (function
296 (string-match regexp name)
297 )) mime-view-visible-field-list)
300 (if (re-search-forward "^\\([^ \t]\\|$\\)" nil t)
305 (defun mime-view-default-content-header-filter ()
306 (mime-view-cut-header)
307 (eword-decode-header)
310 (defvar mime-view-content-header-filter-alist nil)
313 ;;; @@ content filter
316 (defvar mime-view-content-filter-alist
317 '(("text/enriched" . mime-view-filter-for-text/enriched)
318 ("text/richtext" . mime-view-filter-for-text/richtext)
319 (t . mime-view-filter-for-text/plain)
321 "Alist of media-types vs. corresponding MIME-View filter functions.
322 Each element looks like (TYPE/SUBTYPE . FUNCTION) or (t . FUNCTION).
323 TYPE/SUBTYPE is a string of media-type and FUNCTION is a filter
324 function. t means default media-type.")
327 ;;; @@ entity separator
330 (defun mime-view-entity-separator-function (rcnum cinfo ctype params subj)
331 "Insert entity separator conditionally.
332 Please redefine this function if you want to change default setting."
333 (or (mime-view-header-visible-p rcnum cinfo)
334 (mime-view-body-visible-p rcnum cinfo ctype)
336 (goto-char (point-max))
341 ;;; @@ buffer local variables
344 ;;; @@@ in raw buffer
347 (defvar mime::article/content-info
348 "Information about structure of message.
349 Please use reference function `mime::content-info/SLOT-NAME' to
350 reference slot of content-info. Their argument is only content-info.
352 Following is a list of slots of the structure:
354 rcnum reversed content-number (list)
355 point-min beginning point of region in raw-buffer
356 point-max end point of region in raw-buffer
357 type media-type/subtype (string or nil)
358 parameters parameter of Content-Type field (association list)
359 encoding Content-Transfer-Encoding (string or nil)
360 children entities included in this entity (list of content-infos)
362 If a entity includes other entities in its body, such as multipart or
363 message/rfc822, content-infos of other entities are included in
364 `children', so content-info become a tree.")
365 (make-variable-buffer-local 'mime::article/content-info)
367 (defvar mime-view-buffer nil
368 "MIME View buffer corresponding with the (raw) buffer.")
369 (make-variable-buffer-local 'mime-view-buffer)
372 ;;; @@@ in view buffer
375 (defvar mime-mother-buffer nil
376 "Mother buffer corresponding with the (MIME-View) buffer.
377 If current MIME-View buffer is generated by other buffer, such as
378 message/partial, it is called `mother-buffer'.")
379 (make-variable-buffer-local 'mime-mother-buffer)
381 (defvar mime-raw-buffer nil
382 "Raw buffer corresponding with the (MIME-View) buffer.")
383 (make-variable-buffer-local 'mime-raw-buffer)
385 (defvar mime-view-original-major-mode nil
386 "Major-mode in mime-raw-buffer.")
387 (make-variable-buffer-local 'mime-view-original-major-mode)
389 (make-variable-buffer-local 'mime::preview/original-window-configuration)
392 ;;; @@ quitting method
395 (defvar mime-view-quitting-method-alist
396 '((mime-show-message-mode
397 . mime-view-quitting-method-for-mime-show-message-mode))
398 "Alist of major-mode vs. quitting-method of mime-view.")
400 (defvar mime-view-over-to-previous-method-alist nil)
401 (defvar mime-view-over-to-next-method-alist nil)
403 (defvar mime-view-show-summary-method nil
404 "Alist of major-mode vs. show-summary-method.")
407 ;;; @@ following method
410 (defvar mime-view-following-method-alist nil
411 "Alist of major-mode vs. following-method of mime-view.")
413 (defvar mime-view-following-required-fields-list
420 ;; hack from Gnus 5.0.4.
422 (defvar mime-view-x-face-to-pbm-command
423 "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm")
425 (defvar mime-view-x-face-command
426 (concat mime-view-x-face-to-pbm-command
428 "String to be executed to display an X-Face field.
429 The command will be executed in a sub-shell asynchronously.
430 The compressed face will be piped to this command.")
432 (defun mime-view-x-face-function ()
433 "Function to display X-Face field. You can redefine to customize."
434 ;; 1995/10/12 (c.f. tm-eng:130)
435 ;; fixed by Eric Ding <ericding@San-Jose.ate.slb.com>
437 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
439 (goto-char (point-min))
440 (if (re-search-forward "^X-Face:[ \t]*" nil t)
441 (let ((beg (match-end 0))
442 (end (std11-field-end))
444 (call-process-region beg end "sh" nil 0 nil
445 "-c" mime-view-x-face-command)
452 (defun mime-view-setup-buffers (&optional ctl encoding ibuf obuf)
458 (or mime-view-redisplay
459 (setq mime::article/content-info (mime-parse-message ctl encoding))
461 (let* ((cinfo mime::article/content-info)
462 (pcl (mime/flatten-content-info cinfo))
463 (the-buf (current-buffer))
467 (setq obuf (concat "*Preview-" (buffer-name the-buf) "*")))
468 (set-buffer (get-buffer-create obuf))
469 (setq buffer-read-only nil)
472 (setq mime-raw-buffer the-buf)
473 (setq mime-view-original-major-mode mode)
474 (setq major-mode 'mime-view-mode)
475 (setq mode-name "MIME-View")
477 (mime-view-display-entity (car pcl) cinfo the-buf obuf)
480 (set-buffer-modified-p nil)
481 (setq buffer-read-only t)
484 (setq mime-view-buffer obuf)
487 (defun mime-view-display-entity (content cinfo ibuf obuf)
488 "Display entity from content-info CONTENT."
489 (let* ((beg (mime::content-info/point-min content))
490 (end (mime::content-info/point-max content))
491 (ctype (mime::content-info/type content))
492 (params (mime::content-info/parameters content))
493 (encoding (mime::content-info/encoding content))
494 (rcnum (mime::content-info/rcnum content))
498 (setq he (if (re-search-forward "^$" nil t)
505 (narrow-to-region beg end)
508 (mime-article/get-subject params encoding)))
512 (narrow-to-region nb nb)
513 (mime-view-entity-button-function rcnum cinfo ctype params subj encoding)
514 (if (mime-view-header-visible-p rcnum cinfo)
515 (mime-preview/display-header beg he)
517 (if (and (null rcnum)
519 ctype mime-view-content-button-visible-ctype-list))
521 (goto-char (point-max))
522 (mime-view-insert-entity-button
523 rcnum cinfo ctype params subj encoding)
525 (cond ((mime-view-body-visible-p rcnum cinfo ctype)
526 (mime-preview/display-body he end
527 rcnum cinfo ctype params subj encoding)
529 ((equal ctype "message/partial")
530 (mime-preview/display-message/partial)
533 (null (mime::content-info/children cinfo))
535 (goto-char (point-max))
536 (mime-view-insert-entity-button
537 rcnum cinfo ctype params subj encoding)
539 (mime-view-entity-separator-function rcnum cinfo ctype params subj)
540 (setq ne (point-max))
542 (put-text-property nb ne 'mime-view-raw-buffer ibuf)
543 (put-text-property nb ne 'mime-view-cinfo content)
547 (defun mime-preview/display-header (beg end)
549 (narrow-to-region (point)(point))
550 (insert-buffer-substring mime-raw-buffer beg end)
551 (let ((f (cdr (assq mime-view-original-major-mode
552 mime-view-content-header-filter-alist))))
555 (mime-view-default-content-header-filter)
557 (run-hooks 'mime-view-content-header-filter-hook)
560 (defun mime-preview/display-body (beg end
561 rcnum cinfo ctype params subj encoding)
563 (narrow-to-region (point-max)(point-max))
564 (insert-buffer-substring mime-raw-buffer beg end)
565 (let ((f (cdr (or (assoc ctype mime-view-content-filter-alist)
566 (assq t mime-view-content-filter-alist)))))
568 (funcall f ctype params encoding)
572 (defun mime-preview/display-message/partial ()
574 (goto-char (point-max))
575 (if (not (search-backward "\n\n" nil t))
578 (let ((be (point-max)))
579 (narrow-to-region be be)
580 (insert mime-view-announcement-for-message/partial)
581 (mime-add-button (point-min)(point-max)
582 (function mime-view-play-current-entity))
585 (defun mime-article/get-uu-filename (param &optional encoding)
586 (if (member (or encoding
587 (cdr (assq 'encoding param))
589 mime-view-uuencode-encoding-name-list)
591 (or (if (re-search-forward "^begin [0-9]+ " nil t)
592 (if (looking-at ".+$")
593 (buffer-substring (match-beginning 0)(match-end 0))
598 (defun mime-article/get-subject (param &optional encoding)
599 (or (std11-find-field-body '("Content-Description" "Subject"))
601 (if (or (and (setq ret (mime/Content-Disposition))
602 (setq ret (assoc "filename" (cdr ret)))
604 (setq ret (assoc "name" param))
605 (setq ret (assoc "x-name" param))
607 (std11-strip-quoted-string (cdr ret))
609 (mime-article/get-uu-filename param encoding)
613 ;;; @ content information
616 (defun mime-article/point-content-number (p &optional cinfo)
618 (setq cinfo mime::article/content-info)
620 (let ((b (mime::content-info/point-min cinfo))
621 (e (mime::content-info/point-max cinfo))
622 (c (mime::content-info/children cinfo))
624 (if (and (<= b p)(<= p e))
625 (or (let (co ret (sn 0))
629 (setq ret (mime-article/point-content-number p co))
630 (cond ((eq ret t) (throw 'tag (list sn)))
631 (ret (throw 'tag (cons sn ret)))
638 (defun mime-article/rcnum-to-cinfo (rcnum &optional cinfo)
640 (setq cinfo mime::article/content-info)
644 (equal (mime::content-info/rcnum ci) rcnum)
646 (mime/flatten-content-info cinfo)
649 (defun mime-article/cnum-to-cinfo (cn &optional cinfo)
651 (setq cinfo mime::article/content-info)
658 (let ((rc (nth sn (mime::content-info/children cinfo))))
660 (mime-article/cnum-to-cinfo (cdr cn) rc)
664 (defun mime/flatten-content-info (&optional cinfo)
666 (setq cinfo mime::article/content-info)
668 (let ((dest (list cinfo))
669 (rcl (mime::content-info/children cinfo))
672 (setq dest (nconc dest (mime/flatten-content-info (car rcl))))
678 ;;; @ MIME viewer mode
681 (defconst mime-view-menu-title "MIME-View")
682 (defconst mime-view-menu-list
683 '((up "Move to upper content" mime-view-move-to-upper)
684 (previous "Move to previous content" mime-view-move-to-previous)
685 (next "Move to next content" mime-view-move-to-next)
686 (scroll-down "Scroll to previous content" mime-view-scroll-down-entity)
687 (scroll-up "Scroll to next content" mime-view-scroll-up-entity)
688 (play "Play Content" mime-view-play-current-entity)
689 (extract "Extract Content" mime-view-extract-current-entity)
690 (print "Print" mime-view-print-current-entity)
691 (x-face "Show X Face" mime-view-display-x-face)
693 "Menu for MIME Viewer")
695 (cond (running-xemacs
696 (defvar mime-view-xemacs-popup-menu
697 (cons mime-view-menu-title
700 (vector (nth 1 item)(nth 2 item) t)
702 mime-view-menu-list)))
703 (defun mime-view-xemacs-popup-menu (event)
704 "Popup the menu in the MIME Viewer buffer"
706 (select-window (event-window event))
707 (set-buffer (event-buffer event))
708 (popup-menu 'mime-view-xemacs-popup-menu))
709 (defvar mouse-button-2 'button2)
712 (defvar mouse-button-2 [mouse-2])
715 (defun mime-view-define-keymap (&optional default)
716 (let ((mime-view-mode-map (if (keymapp default)
717 (copy-keymap default)
720 (define-key mime-view-mode-map
721 "u" (function mime-view-move-to-upper))
722 (define-key mime-view-mode-map
723 "p" (function mime-view-move-to-previous))
724 (define-key mime-view-mode-map
725 "n" (function mime-view-move-to-next))
726 (define-key mime-view-mode-map
727 "\e\t" (function mime-view-move-to-previous))
728 (define-key mime-view-mode-map
729 "\t" (function mime-view-move-to-next))
730 (define-key mime-view-mode-map
731 " " (function mime-view-scroll-up-entity))
732 (define-key mime-view-mode-map
733 "\M- " (function mime-view-scroll-down-entity))
734 (define-key mime-view-mode-map
735 "\177" (function mime-view-scroll-down-entity))
736 (define-key mime-view-mode-map
737 "\C-m" (function mime-view-next-line-content))
738 (define-key mime-view-mode-map
739 "\C-\M-m" (function mime-view-previous-line-content))
740 (define-key mime-view-mode-map
741 "v" (function mime-view-play-current-entity))
742 (define-key mime-view-mode-map
743 "e" (function mime-view-extract-current-entity))
744 (define-key mime-view-mode-map
745 "\C-c\C-p" (function mime-view-print-current-entity))
746 (define-key mime-view-mode-map
747 "a" (function mime-view-follow-current-entity))
748 (define-key mime-view-mode-map
749 "q" (function mime-view-quit))
750 (define-key mime-view-mode-map
751 "h" (function mime-view-show-summary))
752 (define-key mime-view-mode-map
753 "\C-c\C-x" (function mime-view-kill-buffer))
754 (define-key mime-view-mode-map
755 "<" (function beginning-of-buffer))
756 (define-key mime-view-mode-map
757 ">" (function end-of-buffer))
758 (define-key mime-view-mode-map
759 "?" (function describe-mode))
760 (if (functionp default)
761 (cond (running-xemacs
762 (set-keymap-default-binding mime-view-mode-map default)
765 (setq mime-view-mode-map
766 (append mime-view-mode-map (list (cons t default))))
769 (define-key mime-view-mode-map
770 mouse-button-2 (function mime-button-dispatcher))
772 (cond (running-xemacs
773 (define-key mime-view-mode-map
774 mouse-button-3 (function mime-view-xemacs-popup-menu))
776 ((>= emacs-major-version 19)
777 (define-key mime-view-mode-map [menu-bar mime-view]
778 (cons mime-view-menu-title
779 (make-sparse-keymap mime-view-menu-title)))
782 (define-key mime-view-mode-map
783 (vector 'menu-bar 'mime-view (car item))
784 (cons (nth 1 item)(nth 2 item))
787 (reverse mime-view-menu-list)
790 (use-local-map mime-view-mode-map)
791 (run-hooks 'mime-view-define-keymap-hook)
794 (defsubst mime-hide-echo-buffer ()
795 "Hide mime-echo buffer."
796 (let ((win (get-buffer-window mime-echo-buffer-name)))
801 (defun mime-view-mode (&optional mother ctl encoding ibuf obuf
802 default-keymap-or-function)
803 "Major mode for viewing MIME message.
805 Here is a list of the standard keys for mime-view-mode.
810 u Move to upper content
811 p or M-TAB Move to previous content
812 n or TAB Move to next content
813 SPC Scroll up or move to next content
814 M-SPC or DEL Scroll down or move to previous content
815 RET Move to next line
816 M-RET Move to previous line
817 v Decode current content as `play mode'
818 e Decode current content as `extract mode'
819 C-c C-p Decode current content as `print mode'
820 a Followup to current content.
823 button-2 Move to point under the mouse cursor
824 and decode current content as `play mode'
827 (let ((buf (get-buffer mime-echo-buffer-name)))
832 (mime-hide-echo-buffer)
834 (let ((ret (mime-view-setup-buffers ctl encoding ibuf obuf))
835 (win-conf (current-window-configuration))
838 (switch-to-buffer ret)
839 (setq mime::preview/original-window-configuration win-conf)
842 (setq mime-mother-buffer mother)
844 (mime-view-define-keymap default-keymap-or-function)
845 (let ((point (next-single-property-change (point-min) 'mime-view-cinfo)))
848 (goto-char (point-min))
849 (search-forward "\n\n" nil t)
851 (run-hooks 'mime-view-mode-hook)
858 (autoload 'mime-view-play-current-entity "mime-play" "Play current entity." t)
860 (defun mime-view-extract-current-entity ()
861 "Extract current entity into file (maybe).
862 It decodes current entity to call internal or external method as
863 \"extract\" mode. The method is selected from variable
864 `mime/content-decoding-condition'."
866 (mime-view-play-current-entity "extract")
869 (defun mime-view-print-current-entity ()
870 "Print current entity (maybe).
871 It decodes current entity to call internal or external method as
872 \"print\" mode. The method is selected from variable
873 `mime/content-decoding-condition'."
875 (mime-view-play-current-entity "print")
882 (defun mime-view-get-original-major-mode ()
883 "Return major-mode of original buffer.
884 If a current buffer has mime-mother-buffer, return original major-mode
885 of the mother-buffer."
886 (if mime-mother-buffer
888 (set-buffer mime-mother-buffer)
889 (mime-view-get-original-major-mode)
891 mime-view-original-major-mode))
893 (defun mime-view-follow-current-entity ()
894 "Write follow message to current entity.
895 It calls following-method selected from variable
896 `mime-view-following-method-alist'."
898 (let ((root-cinfo (get-text-property (point-min) 'mime-view-cinfo))
900 (while (null (setq cinfo (get-text-property (point) 'mime-view-cinfo)))
903 (let* ((p-beg (previous-single-property-change (point) 'mime-view-cinfo))
905 (rcnum (mime::content-info/rcnum cinfo))
910 (if (eq (next-single-property-change (point-min)
916 ((eq (next-single-property-change p-beg 'mime-view-cinfo)
920 (setq p-end (next-single-property-change p-beg 'mime-view-cinfo))
922 (setq p-end (point-max))
925 (setq p-end (point-max))
933 (next-single-property-change
934 (point) 'mime-view-cinfo))
936 (let ((rc (mime::content-info/rcnum
937 (get-text-property (point)
939 (or (equal rcnum (nthcdr (- (length rc) len) rc))
944 (setq p-end (point-max))
947 (let* ((mode (mime-view-get-original-major-mode))
948 (new-name (format "%s-%s" (buffer-name) (reverse rcnum)))
950 (the-buf (current-buffer))
951 (a-buf mime-raw-buffer)
954 (set-buffer (setq new-buf (get-buffer-create new-name)))
956 (insert-buffer-substring the-buf p-beg p-end)
957 (goto-char (point-min))
958 (if (mime-view-header-visible-p rcnum root-cinfo)
959 (delete-region (goto-char (point-min))
960 (if (re-search-forward "^$" nil t)
964 (goto-char (point-min))
966 (goto-char (point-min))
967 (let ((rcnum (mime::content-info/rcnum cinfo)) ci str)
972 (setq ci (mime-article/rcnum-to-cinfo rcnum))
975 (mime::content-info/point-min ci)
976 (mime::content-info/point-max ci)
978 (std11-header-string-except
980 (apply (function regexp-or) fields)
982 (if (string= (mime::content-info/type ci)
989 (setq fields (std11-collect-field-names)
993 (let ((rest mime-view-following-required-fields-list))
995 (let ((field-name (car rest)))
996 (or (std11-field-body field-name)
1002 (set-buffer the-buf)
1003 (set-buffer mime-mother-buffer)
1004 (set-buffer mime-raw-buffer)
1005 (std11-field-body field-name)
1009 (setq rest (cdr rest))
1011 (eword-decode-header)
1013 (let ((f (cdr (assq mode mime-view-following-method-alist))))
1018 "Sorry, following method for %s is not implemented yet."
1027 (defun mime-view-display-x-face ()
1029 (save-window-excursion
1030 (set-buffer mime-raw-buffer)
1031 (mime-view-x-face-function)
1038 (defun mime-view-move-to-upper ()
1039 "Move to upper entity.
1040 If there is no upper entity, call function `mime-view-quit'."
1043 (while (null (setq cinfo (get-text-property (point) 'mime-view-cinfo)))
1046 (let ((r (mime-article/rcnum-to-cinfo
1047 (cdr (mime::content-info/rcnum cinfo))
1048 (get-text-property 1 'mime-view-cinfo)))
1051 (while (setq point (previous-single-property-change
1052 (point) 'mime-view-cinfo))
1054 (if (eq r (get-text-property (point) 'mime-view-cinfo))
1061 (defun mime-view-move-to-previous ()
1062 "Move to previous entity.
1063 If there is no previous entity, it calls function registered in
1064 variable `mime-view-over-to-previous-method-alist'."
1066 (while (null (get-text-property (point) 'mime-view-cinfo))
1069 (let ((point (previous-single-property-change (point) 'mime-view-cinfo)))
1072 (let ((f (assq mime-view-original-major-mode
1073 mime-view-over-to-previous-method-alist)))
1079 (defun mime-view-move-to-next ()
1080 "Move to next entity.
1081 If there is no previous entity, it calls function registered in
1082 variable `mime-view-over-to-next-method-alist'."
1084 (let ((point (next-single-property-change (point) 'mime-view-cinfo)))
1087 (let ((f (assq mime-view-original-major-mode
1088 mime-view-over-to-next-method-alist)))
1094 (defun mime-view-scroll-up-entity (&optional h)
1095 "Scroll up current entity.
1096 If reached to (point-max), it calls function registered in variable
1097 `mime-view-over-to-next-method-alist'."
1100 (setq h (1- (window-height)))
1102 (if (= (point) (point-max))
1103 (let ((f (assq mime-view-original-major-mode
1104 mime-view-over-to-next-method-alist)))
1109 (or (next-single-property-change (point) 'mime-view-cinfo)
1112 (if (> (point) point)
1117 (defun mime-view-scroll-down-entity (&optional h)
1118 "Scroll down current entity.
1119 If reached to (point-min), it calls function registered in variable
1120 `mime-view-over-to-previous-method-alist'."
1123 (setq h (1- (window-height)))
1125 (if (= (point) (point-min))
1126 (let ((f (assq mime-view-original-major-mode
1127 mime-view-over-to-previous-method-alist)))
1134 (while (> (point) 1)
1136 (previous-single-property-change (point)
1142 (setq point (point-min))
1144 (forward-line (- h))
1145 (if (< (point) point)
1149 (defun mime-view-next-line-content ()
1151 (mime-view-scroll-up-entity 1)
1154 (defun mime-view-previous-line-content ()
1156 (mime-view-scroll-down-entity 1)
1163 (defun mime-view-quit ()
1164 "Quit from MIME-View buffer.
1165 It calls function registered in variable
1166 `mime-view-quitting-method-alist'."
1168 (let ((r (assq mime-view-original-major-mode
1169 mime-view-quitting-method-alist)))
1174 (defun mime-view-show-summary ()
1176 It calls function registered in variable
1177 `mime-view-show-summary-method'."
1179 (let ((r (assq mime-view-original-major-mode
1180 mime-view-show-summary-method)))
1185 (defun mime-view-kill-buffer ()
1187 (kill-buffer (current-buffer))
1194 (provide 'mime-view)
1196 (run-hooks 'mime-view-load-hook)
1198 ;;; mime-view.el ends here