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: 0.93 $
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 0.93 1997-06-21 04:14:36 morioka Exp $")
45 (defconst mime-view-version (get-version-string mime-view-RCS-ID))
51 (defvar mime-acting-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 . "text/x-rot13-47-48")
65 (method . mime-display-caesar)
68 ((type . "audio/basic")
69 (method "tm-au" nil 'file 'type 'encoding 'mode 'name)
73 ((type . "image/jpeg")
74 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
78 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
82 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
85 ((type . "image/tiff")
86 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
89 ((type . "image/x-tiff")
90 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
93 ((type . "image/x-xbm")
94 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
97 ((type . "image/x-pic")
98 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
101 ((type . "image/x-mag")
102 (method "tm-image" nil 'file 'type 'encoding 'mode 'name)
103 (mode "play" "print")
106 ((type . "video/mpeg")
107 (method "tm-mpeg" nil 'file 'type 'encoding 'mode 'name)
111 ((type . "application/postscript")
112 (method "tm-ps" nil 'file 'type 'encoding 'mode 'name)
113 (mode "play" "print")
115 ((type . "application/octet-stream")
116 (method "tm-file" nil 'file 'type 'encoding 'mode 'name)
117 (mode "play" "print")
120 ;;((type . "message/external-body")
121 ;; (method "xterm" nil
122 ;; "-e" "showexternal"
123 ;; 'file '"access-type" '"name" '"site" '"directory"))
124 ((type . "message/external-body")
125 ("access-type" . "anon-ftp")
126 (method . mime-display-message/external-ftp)
128 ((type . "message/rfc822")
129 (method . mime-article/view-message/rfc822)
132 ((type . "message/partial")
133 (method . mime-display-message/partial)
137 ((method "metamail" t "-m" "tm" "-x" "-d" "-z" "-e" 'file)
140 ((method "tm-file" nil 'file 'type 'encoding 'mode 'name)
145 (defvar mime-view-childrens-header-showing-Content-Type-list
146 '("message/rfc822" "message/news"))
148 (defvar mime-view-visible-media-type-list
149 '("text/plain" nil "text/richtext" "text/enriched"
150 "text/rfc822-headers"
151 "text/x-latex" "application/x-latex"
152 "message/delivery-status"
153 "application/pgp" "text/x-pgp"
154 "application/octet-stream"
155 "application/x-selection" "application/x-comment")
156 "*List of media-types to be able to display in MIME-View buffer.
157 Each elements are string of TYPE/SUBTYPE, e.g. \"text/plain\".")
159 (defvar mime-view-content-button-visible-ctype-list
160 '("application/pgp"))
162 (defvar mime-view-uuencode-encoding-name-list '("x-uue" "x-uuencode"))
164 (defvar mime-view-ignored-field-list
165 '(".*Received" ".*Path" ".*Id" "References"
166 "Replied" "Errors-To"
167 "Lines" "Sender" ".*Host" "Xref"
168 "Content-Type" "Precedence"
170 "All fields that match this list will be hidden in MIME preview buffer.
171 Each elements are regexp of field-name. [mime-view.el]")
173 (defvar mime-view-ignored-field-regexp
175 (apply (function regexp-or) mime-view-ignored-field-list)
178 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
179 "All fields that match this list will be displayed in MIME preview buffer.
180 Each elements are regexp of field-name.")
182 (defvar mime-view-redisplay nil)
184 (defvar mime-view-announcement-for-message/partial
185 (if (and (>= emacs-major-version 19) window-system)
187 \[[ This is message/partial style split message. ]]
188 \[[ Please press `v' key in this buffer ]]
189 \[[ or click here by mouse button-2. ]]"
191 \[[ This is message/partial style split message. ]]
192 \[[ Please press `v' key in this buffer. ]]"
196 ;;; @@ predicate functions
199 (defun mime-view-header-visible-p (rcnum cinfo)
200 "Return non-nil if header of current entity is visible."
202 (member (mime::content-info/type
203 (mime-article/rcnum-to-cinfo (cdr rcnum) cinfo))
204 mime-view-childrens-header-showing-Content-Type-list)
207 (defun mime-view-body-visible-p (rcnum cinfo &optional ctype)
211 (mime::content-info/type
212 (setq ccinfo (mime-article/rcnum-to-cinfo rcnum cinfo))
215 (and (member ctype mime-view-visible-media-type-list)
216 (if (string-equal ctype "application/octet-stream")
219 (setq ccinfo (mime-article/rcnum-to-cinfo rcnum cinfo))
221 (member (mime::content-info/encoding ccinfo)
222 '(nil "7bit" "8bit"))
231 (defun mime-view-insert-entity-button (rcnum cinfo ctype params subj encoding)
232 "Insert entity-button."
234 (let ((access-type (assoc "access-type" params))
235 (num (or (cdr (assoc "x-part-number" params))
239 (format "%s" (1+ num))
245 (let ((server (assoc "server" params)))
246 (setq access-type (cdr access-type))
248 (format "%s %s ([%s] %s)"
249 num subj access-type (cdr server))
250 (let ((site (cdr (assoc "site" params)))
251 (dir (cdr (assoc "directory" params)))
253 (format "%s %s ([%s] %s:%s)"
254 num subj access-type site dir)
258 (let ((charset (cdr (assoc "charset" params))))
264 (concat "; " charset)
265 (if encoding (concat " (" encoding ")"))
268 (if (>= (+ (current-column)(length rest))(window-width))
272 (function mime-view-play-current-entity))
275 (defun mime-view-entity-button-function
276 (rcnum cinfo ctype params subj encoding)
277 "Insert entity button conditionally.
278 Please redefine this function if you want to change default setting."
280 (string= ctype "application/x-selection")
281 (and (string= ctype "application/octet-stream")
282 (string= (mime::content-info/type
283 (mime-article/rcnum-to-cinfo (cdr rcnum) cinfo))
284 "multipart/encrypted"))
285 (mime-view-insert-entity-button rcnum cinfo ctype params subj encoding)
289 ;;; @@ content header filter
292 (defsubst mime-view-cut-header ()
293 (goto-char (point-min))
294 (while (re-search-forward mime-view-ignored-field-regexp nil t)
295 (let* ((beg (match-beginning 0))
297 (name (buffer-substring beg end))
299 (or (member-if (function
301 (string-match regexp name)
302 )) mime-view-visible-field-list)
305 (if (re-search-forward "^\\([^ \t]\\|$\\)" nil t)
310 (defun mime-view-default-content-header-filter ()
311 (mime-view-cut-header)
312 (eword-decode-header)
315 (defvar mime-view-content-header-filter-alist nil)
318 ;;; @@ content filter
321 (defvar mime-view-content-filter-alist
322 '(("text/enriched" . mime-view-filter-for-text/enriched)
323 ("text/richtext" . mime-view-filter-for-text/richtext)
324 (t . mime-view-filter-for-text/plain)
326 "Alist of media-types vs. corresponding MIME-View filter functions.
327 Each element looks like (TYPE/SUBTYPE . FUNCTION) or (t . FUNCTION).
328 TYPE/SUBTYPE is a string of media-type and FUNCTION is a filter
329 function. t means default media-type.")
332 ;;; @@ entity separator
335 (defun mime-view-entity-separator-function (rcnum cinfo ctype params subj)
336 "Insert entity separator conditionally.
337 Please redefine this function if you want to change default setting."
338 (or (mime-view-header-visible-p rcnum cinfo)
339 (mime-view-body-visible-p rcnum cinfo ctype)
341 (goto-char (point-max))
346 ;;; @@ buffer local variables
349 ;;; @@@ in raw buffer
352 (defvar mime::article/content-info
353 "Information about structure of message.
354 Please use reference function `mime::content-info/SLOT-NAME' to
355 reference slot of content-info. Their argument is only content-info.
357 Following is a list of slots of the structure:
359 rcnum reversed content-number (list)
360 point-min beginning point of region in raw-buffer
361 point-max end point of region in raw-buffer
362 type media-type/subtype (string or nil)
363 parameters parameter of Content-Type field (association list)
364 encoding Content-Transfer-Encoding (string or nil)
365 children entities included in this entity (list of content-infos)
367 If a entity includes other entities in its body, such as multipart or
368 message/rfc822, content-infos of other entities are included in
369 `children', so content-info become a tree.")
370 (make-variable-buffer-local 'mime::article/content-info)
372 (defvar mime-view-buffer nil
373 "MIME View buffer corresponding with the (raw) buffer.")
374 (make-variable-buffer-local 'mime-view-buffer)
377 ;;; @@@ in view buffer
380 (defvar mime-mother-buffer nil
381 "Mother buffer corresponding with the (MIME-View) buffer.
382 If current MIME-View buffer is generated by other buffer, such as
383 message/partial, it is called `mother-buffer'.")
384 (make-variable-buffer-local 'mime-mother-buffer)
386 (defvar mime-raw-buffer nil
387 "Raw buffer corresponding with the (MIME-View) buffer.")
388 (make-variable-buffer-local 'mime-raw-buffer)
390 (defvar mime-view-original-major-mode nil
391 "Major-mode in mime-raw-buffer.")
392 (make-variable-buffer-local 'mime-view-original-major-mode)
394 (make-variable-buffer-local 'mime::preview/original-window-configuration)
397 ;;; @@ quitting method
400 (defvar mime-view-quitting-method-alist
401 '((mime-show-message-mode
402 . mime-view-quitting-method-for-mime-show-message-mode))
403 "Alist of major-mode vs. quitting-method of mime-view.")
405 (defvar mime-view-over-to-previous-method-alist nil)
406 (defvar mime-view-over-to-next-method-alist nil)
408 (defvar mime-view-show-summary-method nil
409 "Alist of major-mode vs. show-summary-method.")
412 ;;; @@ following method
415 (defvar mime-view-following-method-alist nil
416 "Alist of major-mode vs. following-method of mime-view.")
418 (defvar mime-view-following-required-fields-list
425 ;; hack from Gnus 5.0.4.
427 (defvar mime-view-x-face-to-pbm-command
428 "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm")
430 (defvar mime-view-x-face-command
431 (concat mime-view-x-face-to-pbm-command
433 "String to be executed to display an X-Face field.
434 The command will be executed in a sub-shell asynchronously.
435 The compressed face will be piped to this command.")
437 (defun mime-view-x-face-function ()
438 "Function to display X-Face field. You can redefine to customize."
439 ;; 1995/10/12 (c.f. tm-eng:130)
440 ;; fixed by Eric Ding <ericding@San-Jose.ate.slb.com>
442 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
444 (goto-char (point-min))
445 (if (re-search-forward "^X-Face:[ \t]*" nil t)
446 (let ((beg (match-end 0))
447 (end (std11-field-end))
449 (call-process-region beg end "sh" nil 0 nil
450 "-c" mime-view-x-face-command)
457 (defun mime-view-setup-buffers (&optional ctl encoding ibuf obuf)
463 (or mime-view-redisplay
464 (setq mime::article/content-info (mime-parse-message ctl encoding))
466 (let* ((cinfo mime::article/content-info)
467 (pcl (mime/flatten-content-info cinfo))
468 (the-buf (current-buffer))
472 (setq obuf (concat "*Preview-" (buffer-name the-buf) "*")))
473 (set-buffer (get-buffer-create obuf))
474 (let ((inhibit-read-only t))
475 ;;(setq buffer-read-only nil)
478 (setq mime-raw-buffer the-buf)
479 (setq mime-view-original-major-mode mode)
480 (setq major-mode 'mime-view-mode)
481 (setq mode-name "MIME-View")
483 (mime-view-display-entity (car pcl) cinfo the-buf obuf)
486 (set-buffer-modified-p nil)
488 (setq buffer-read-only t)
491 (setq mime-view-buffer obuf)
494 (defun mime-view-display-entity (content cinfo ibuf obuf)
495 "Display entity from content-info CONTENT."
496 (let* ((beg (mime::content-info/point-min content))
497 (end (mime::content-info/point-max content))
498 (ctype (mime::content-info/type content))
499 (params (mime::content-info/parameters content))
500 (encoding (mime::content-info/encoding content))
501 (rcnum (mime::content-info/rcnum content))
505 (setq he (if (re-search-forward "^$" nil t)
512 (narrow-to-region beg end)
515 (mime-article/get-subject params encoding)))
519 (narrow-to-region nb nb)
520 (mime-view-entity-button-function rcnum cinfo ctype params subj encoding)
521 (if (mime-view-header-visible-p rcnum cinfo)
522 (mime-preview/display-header beg he)
524 (if (and (null rcnum)
526 ctype mime-view-content-button-visible-ctype-list))
528 (goto-char (point-max))
529 (mime-view-insert-entity-button
530 rcnum cinfo ctype params subj encoding)
532 (cond ((mime-view-body-visible-p rcnum cinfo ctype)
533 (mime-preview/display-body he end
534 rcnum cinfo ctype params subj encoding)
536 ((equal ctype "message/partial")
537 (mime-preview/display-message/partial)
540 (null (mime::content-info/children cinfo))
542 (goto-char (point-max))
543 (mime-view-insert-entity-button
544 rcnum cinfo ctype params subj encoding)
546 (mime-view-entity-separator-function rcnum cinfo ctype params subj)
547 (setq ne (point-max))
549 (put-text-property nb ne 'mime-view-raw-buffer ibuf)
550 (put-text-property nb ne 'mime-view-cinfo content)
554 (defun mime-preview/display-header (beg end)
556 (narrow-to-region (point)(point))
557 (insert-buffer-substring mime-raw-buffer beg end)
558 (let ((f (cdr (assq mime-view-original-major-mode
559 mime-view-content-header-filter-alist))))
562 (mime-view-default-content-header-filter)
564 (run-hooks 'mime-view-content-header-filter-hook)
567 (defun mime-preview/display-body (beg end
568 rcnum cinfo ctype params subj encoding)
570 (narrow-to-region (point-max)(point-max))
571 (insert-buffer-substring mime-raw-buffer beg end)
572 (let ((f (cdr (or (assoc ctype mime-view-content-filter-alist)
573 (assq t mime-view-content-filter-alist)))))
575 (funcall f ctype params encoding)
579 (defun mime-preview/display-message/partial ()
581 (goto-char (point-max))
582 (if (not (search-backward "\n\n" nil t))
585 (mime-insert-button mime-view-announcement-for-message/partial
586 (function mime-view-play-current-entity))
589 (defun mime-article/get-uu-filename (param &optional encoding)
590 (if (member (or encoding
591 (cdr (assq 'encoding param))
593 mime-view-uuencode-encoding-name-list)
595 (or (if (re-search-forward "^begin [0-9]+ " nil t)
596 (if (looking-at ".+$")
597 (buffer-substring (match-beginning 0)(match-end 0))
602 (defun mime-article/get-subject (param &optional encoding)
603 (or (std11-find-field-body '("Content-Description" "Subject"))
605 (if (or (and (setq ret (mime/Content-Disposition))
606 (setq ret (assoc "filename" (cdr ret)))
608 (setq ret (assoc "name" param))
609 (setq ret (assoc "x-name" param))
611 (std11-strip-quoted-string (cdr ret))
613 (mime-article/get-uu-filename param encoding)
617 ;;; @ content information
620 (defun mime-article/point-content-number (p &optional cinfo)
622 (setq cinfo mime::article/content-info)
624 (let ((b (mime::content-info/point-min cinfo))
625 (e (mime::content-info/point-max cinfo))
626 (c (mime::content-info/children cinfo))
628 (if (and (<= b p)(<= p e))
629 (or (let (co ret (sn 0))
633 (setq ret (mime-article/point-content-number p co))
634 (cond ((eq ret t) (throw 'tag (list sn)))
635 (ret (throw 'tag (cons sn ret)))
642 (defun mime-article/rcnum-to-cinfo (rcnum &optional cinfo)
644 (setq cinfo mime::article/content-info)
648 (equal (mime::content-info/rcnum ci) rcnum)
650 (mime/flatten-content-info cinfo)
653 (defun mime-article/cnum-to-cinfo (cn &optional cinfo)
655 (setq cinfo mime::article/content-info)
662 (let ((rc (nth sn (mime::content-info/children cinfo))))
664 (mime-article/cnum-to-cinfo (cdr cn) rc)
668 (defun mime/flatten-content-info (&optional cinfo)
670 (setq cinfo mime::article/content-info)
672 (let ((dest (list cinfo))
673 (rcl (mime::content-info/children cinfo))
676 (setq dest (nconc dest (mime/flatten-content-info (car rcl))))
682 ;;; @ MIME viewer mode
685 (defconst mime-view-menu-title "MIME-View")
686 (defconst mime-view-menu-list
687 '((up "Move to upper content" mime-view-move-to-upper)
688 (previous "Move to previous content" mime-view-move-to-previous)
689 (next "Move to next content" mime-view-move-to-next)
690 (scroll-down "Scroll to previous content" mime-view-scroll-down-entity)
691 (scroll-up "Scroll to next content" mime-view-scroll-up-entity)
692 (play "Play Content" mime-view-play-current-entity)
693 (extract "Extract Content" mime-view-extract-current-entity)
694 (print "Print" mime-view-print-current-entity)
695 (x-face "Show X Face" mime-view-display-x-face)
697 "Menu for MIME Viewer")
699 (cond (running-xemacs
700 (defvar mime-view-xemacs-popup-menu
701 (cons mime-view-menu-title
704 (vector (nth 1 item)(nth 2 item) t)
706 mime-view-menu-list)))
707 (defun mime-view-xemacs-popup-menu (event)
708 "Popup the menu in the MIME Viewer buffer"
710 (select-window (event-window event))
711 (set-buffer (event-buffer event))
712 (popup-menu 'mime-view-xemacs-popup-menu))
713 (defvar mouse-button-2 'button2)
716 (defvar mouse-button-2 [mouse-2])
719 (defun mime-view-define-keymap (&optional default)
720 (let ((mime-view-mode-map (if (keymapp default)
721 (copy-keymap default)
724 (define-key mime-view-mode-map
725 "u" (function mime-view-move-to-upper))
726 (define-key mime-view-mode-map
727 "p" (function mime-view-move-to-previous))
728 (define-key mime-view-mode-map
729 "n" (function mime-view-move-to-next))
730 (define-key mime-view-mode-map
731 "\e\t" (function mime-view-move-to-previous))
732 (define-key mime-view-mode-map
733 "\t" (function mime-view-move-to-next))
734 (define-key mime-view-mode-map
735 " " (function mime-view-scroll-up-entity))
736 (define-key mime-view-mode-map
737 "\M- " (function mime-view-scroll-down-entity))
738 (define-key mime-view-mode-map
739 "\177" (function mime-view-scroll-down-entity))
740 (define-key mime-view-mode-map
741 "\C-m" (function mime-view-next-line-content))
742 (define-key mime-view-mode-map
743 "\C-\M-m" (function mime-view-previous-line-content))
744 (define-key mime-view-mode-map
745 "v" (function mime-view-play-current-entity))
746 (define-key mime-view-mode-map
747 "e" (function mime-view-extract-current-entity))
748 (define-key mime-view-mode-map
749 "\C-c\C-p" (function mime-view-print-current-entity))
750 (define-key mime-view-mode-map
751 "a" (function mime-view-follow-current-entity))
752 (define-key mime-view-mode-map
753 "q" (function mime-view-quit))
754 (define-key mime-view-mode-map
755 "h" (function mime-view-show-summary))
756 (define-key mime-view-mode-map
757 "\C-c\C-x" (function mime-view-kill-buffer))
758 ;; (define-key mime-view-mode-map
759 ;; "<" (function beginning-of-buffer))
760 ;; (define-key mime-view-mode-map
761 ;; ">" (function end-of-buffer))
762 (define-key mime-view-mode-map
763 "?" (function describe-mode))
764 (define-key mime-view-mode-map
765 [tab] (function mime-view-move-to-next))
766 (define-key mime-view-mode-map
767 [delete] (function mime-view-scroll-down-entity))
768 (define-key mime-view-mode-map
769 [backspace] (function mime-view-scroll-down-entity))
770 (if (functionp default)
771 (cond (running-xemacs
772 (set-keymap-default-binding mime-view-mode-map default)
775 (setq mime-view-mode-map
776 (append mime-view-mode-map (list (cons t default))))
779 (define-key mime-view-mode-map
780 mouse-button-2 (function mime-button-dispatcher))
782 (cond (running-xemacs
783 (define-key mime-view-mode-map
784 mouse-button-3 (function mime-view-xemacs-popup-menu))
786 ((>= emacs-major-version 19)
787 (define-key mime-view-mode-map [menu-bar mime-view]
788 (cons mime-view-menu-title
789 (make-sparse-keymap mime-view-menu-title)))
792 (define-key mime-view-mode-map
793 (vector 'menu-bar 'mime-view (car item))
794 (cons (nth 1 item)(nth 2 item))
797 (reverse mime-view-menu-list)
800 (use-local-map mime-view-mode-map)
801 (run-hooks 'mime-view-define-keymap-hook)
804 (defsubst mime-hide-echo-buffer ()
805 "Hide mime-echo buffer."
806 (let ((win (get-buffer-window mime-echo-buffer-name)))
811 (defun mime-view-mode (&optional mother ctl encoding ibuf obuf
812 default-keymap-or-function)
813 "Major mode for viewing MIME message.
815 Here is a list of the standard keys for mime-view-mode.
820 u Move to upper content
821 p or M-TAB Move to previous content
822 n or TAB Move to next content
823 SPC Scroll up or move to next content
824 M-SPC or DEL Scroll down or move to previous content
825 RET Move to next line
826 M-RET Move to previous line
827 v Decode current content as `play mode'
828 e Decode current content as `extract mode'
829 C-c C-p Decode current content as `print mode'
830 a Followup to current content.
833 button-2 Move to point under the mouse cursor
834 and decode current content as `play mode'
837 (let ((buf (get-buffer mime-echo-buffer-name)))
842 (mime-hide-echo-buffer)
844 (let ((ret (mime-view-setup-buffers ctl encoding ibuf obuf))
845 (win-conf (current-window-configuration))
848 (switch-to-buffer ret)
849 (setq mime::preview/original-window-configuration win-conf)
852 (setq mime-mother-buffer mother)
854 (mime-view-define-keymap default-keymap-or-function)
855 (let ((point (next-single-property-change (point-min) 'mime-view-cinfo)))
858 (goto-char (point-min))
859 (search-forward "\n\n" nil t)
861 (run-hooks 'mime-view-mode-hook)
868 (autoload 'mime-view-play-current-entity "mime-play" "Play current entity." t)
870 (defun mime-view-extract-current-entity ()
871 "Extract current entity into file (maybe).
872 It decodes current entity to call internal or external method as
873 \"extract\" mode. The method is selected from variable
874 `mime-acting-condition'."
876 (mime-view-play-current-entity "extract")
879 (defun mime-view-print-current-entity ()
880 "Print current entity (maybe).
881 It decodes current entity to call internal or external method as
882 \"print\" mode. The method is selected from variable
883 `mime-acting-condition'."
885 (mime-view-play-current-entity "print")
892 (defun mime-view-get-original-major-mode ()
893 "Return major-mode of original buffer.
894 If a current buffer has mime-mother-buffer, return original major-mode
895 of the mother-buffer."
896 (if mime-mother-buffer
898 (set-buffer mime-mother-buffer)
899 (mime-view-get-original-major-mode)
901 mime-view-original-major-mode))
903 (defun mime-view-follow-current-entity ()
904 "Write follow message to current entity.
905 It calls following-method selected from variable
906 `mime-view-following-method-alist'."
908 (let ((root-cinfo (get-text-property (point-min) 'mime-view-cinfo))
910 (while (null (setq cinfo (get-text-property (point) 'mime-view-cinfo)))
913 (let* ((p-beg (previous-single-property-change (point) 'mime-view-cinfo))
915 (rcnum (mime::content-info/rcnum cinfo))
920 (if (eq (next-single-property-change (point-min)
926 ((eq (next-single-property-change p-beg 'mime-view-cinfo)
930 (setq p-end (next-single-property-change p-beg 'mime-view-cinfo))
932 (setq p-end (point-max))
935 (setq p-end (point-max))
943 (next-single-property-change
944 (point) 'mime-view-cinfo))
946 (let ((rc (mime::content-info/rcnum
947 (get-text-property (point)
949 (or (equal rcnum (nthcdr (- (length rc) len) rc))
954 (setq p-end (point-max))
957 (let* ((mode (mime-view-get-original-major-mode))
958 (new-name (format "%s-%s" (buffer-name) (reverse rcnum)))
960 (the-buf (current-buffer))
961 (a-buf mime-raw-buffer)
964 (set-buffer (setq new-buf (get-buffer-create new-name)))
966 (insert-buffer-substring the-buf p-beg p-end)
967 (goto-char (point-min))
968 (if (mime-view-header-visible-p rcnum root-cinfo)
969 (delete-region (goto-char (point-min))
970 (if (re-search-forward "^$" nil t)
974 (goto-char (point-min))
976 (goto-char (point-min))
977 (let ((rcnum (mime::content-info/rcnum cinfo)) ci str)
982 (setq ci (mime-article/rcnum-to-cinfo rcnum))
985 (mime::content-info/point-min ci)
986 (mime::content-info/point-max ci)
988 (std11-header-string-except
990 (apply (function regexp-or) fields)
992 (if (string= (mime::content-info/type ci)
999 (setq fields (std11-collect-field-names)
1003 (let ((rest mime-view-following-required-fields-list))
1005 (let ((field-name (car rest)))
1006 (or (std11-field-body field-name)
1012 (set-buffer the-buf)
1013 (set-buffer mime-mother-buffer)
1014 (set-buffer mime-raw-buffer)
1015 (std11-field-body field-name)
1019 (setq rest (cdr rest))
1021 (eword-decode-header)
1023 (let ((f (cdr (assq mode mime-view-following-method-alist))))
1028 "Sorry, following method for %s is not implemented yet."
1037 (defun mime-view-display-x-face ()
1039 (save-window-excursion
1040 (set-buffer mime-raw-buffer)
1041 (mime-view-x-face-function)
1048 (defun mime-view-move-to-upper ()
1049 "Move to upper entity.
1050 If there is no upper entity, call function `mime-view-quit'."
1053 (while (null (setq cinfo (get-text-property (point) 'mime-view-cinfo)))
1056 (let ((r (mime-article/rcnum-to-cinfo
1057 (cdr (mime::content-info/rcnum cinfo))
1058 (get-text-property 1 'mime-view-cinfo)))
1061 (while (setq point (previous-single-property-change
1062 (point) 'mime-view-cinfo))
1064 (if (eq r (get-text-property (point) 'mime-view-cinfo))
1071 (defun mime-view-move-to-previous ()
1072 "Move to previous entity.
1073 If there is no previous entity, it calls function registered in
1074 variable `mime-view-over-to-previous-method-alist'."
1076 (while (null (get-text-property (point) 'mime-view-cinfo))
1079 (let ((point (previous-single-property-change (point) 'mime-view-cinfo)))
1082 (let ((f (assq mime-view-original-major-mode
1083 mime-view-over-to-previous-method-alist)))
1089 (defun mime-view-move-to-next ()
1090 "Move to next entity.
1091 If there is no previous entity, it calls function registered in
1092 variable `mime-view-over-to-next-method-alist'."
1094 (let ((point (next-single-property-change (point) 'mime-view-cinfo)))
1097 (let ((f (assq mime-view-original-major-mode
1098 mime-view-over-to-next-method-alist)))
1104 (defun mime-view-scroll-up-entity (&optional h)
1105 "Scroll up current entity.
1106 If reached to (point-max), it calls function registered in variable
1107 `mime-view-over-to-next-method-alist'."
1110 (setq h (1- (window-height)))
1112 (if (= (point) (point-max))
1113 (let ((f (assq mime-view-original-major-mode
1114 mime-view-over-to-next-method-alist)))
1119 (or (next-single-property-change (point) 'mime-view-cinfo)
1122 (if (> (point) point)
1127 (defun mime-view-scroll-down-entity (&optional h)
1128 "Scroll down current entity.
1129 If reached to (point-min), it calls function registered in variable
1130 `mime-view-over-to-previous-method-alist'."
1133 (setq h (1- (window-height)))
1135 (if (= (point) (point-min))
1136 (let ((f (assq mime-view-original-major-mode
1137 mime-view-over-to-previous-method-alist)))
1144 (while (> (point) 1)
1146 (previous-single-property-change (point)
1152 (setq point (point-min))
1154 (forward-line (- h))
1155 (if (< (point) point)
1159 (defun mime-view-next-line-content ()
1161 (mime-view-scroll-up-entity 1)
1164 (defun mime-view-previous-line-content ()
1166 (mime-view-scroll-down-entity 1)
1173 (defun mime-view-quit ()
1174 "Quit from MIME-View buffer.
1175 It calls function registered in variable
1176 `mime-view-quitting-method-alist'."
1178 (let ((r (assq mime-view-original-major-mode
1179 mime-view-quitting-method-alist)))
1184 (defun mime-view-show-summary ()
1186 It calls function registered in variable
1187 `mime-view-show-summary-method'."
1189 (let ((r (assq mime-view-original-major-mode
1190 mime-view-show-summary-method)))
1195 (defun mime-view-kill-buffer ()
1197 (kill-buffer (current-buffer))
1204 (provide 'mime-view)
1206 (run-hooks 'mime-view-load-hook)
1208 ;;; mime-view.el ends here