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: 1994/08/31 from tm-body.el
8 ;; Renamed: 1997/02/19 from tm-view.el
9 ;; Keywords: MIME, multimedia, mail, news
11 ;; This file is part of WEMI (Widget based 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 (car mime-module-version) " MIME-View "
43 (mapconcat #'number-to-string (cddr mime-module-version) ".")
44 " (" (cadr mime-module-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 (defvar mime-preview-original-window-configuration nil
97 "Window-configuration before mime-view-mode is called.")
98 (make-variable-buffer-local 'mime-preview-original-window-configuration)
101 ;;; @ entity information
104 (defsubst mime-raw-find-entity-from-node-id (entity-node-id
105 &optional message-info)
106 "Return entity from ENTITY-NODE-ID in mime-raw-buffer.
107 If optional argument MESSAGE-INFO is not specified,
108 `mime-raw-message-info' is used."
109 (mime-raw-find-entity-from-number (reverse entity-node-id) message-info))
111 (defun mime-raw-find-entity-from-number (entity-number &optional message-info)
112 "Return entity from ENTITY-NUMBER in mime-raw-buffer.
113 If optional argument MESSAGE-INFO is not specified,
114 `mime-raw-message-info' is used."
116 (setq message-info mime-raw-message-info))
117 (if (eq entity-number t)
119 (let ((sn (car entity-number)))
122 (let ((rc (nth sn (mime-entity-children message-info))))
124 (mime-raw-find-entity-from-number (cdr entity-number) rc)
128 (defun mime-raw-find-entity-from-point (point &optional message-info)
129 "Return entity from POINT in mime-raw-buffer.
130 If optional argument MESSAGE-INFO is not specified,
131 `mime-raw-message-info' is used."
133 (setq message-info mime-raw-message-info))
134 (if (and (<= (mime-entity-point-min message-info) point)
135 (<= point (mime-entity-point-max message-info)))
136 (let ((children (mime-entity-children message-info)))
140 (mime-raw-find-entity-from-point point (car children))))
144 (setq children (cdr children)))
147 (defsubst mime-raw-point-to-entity-node-id (point &optional message-info)
148 "Return entity-node-id from POINT in mime-raw-buffer.
149 If optional argument MESSAGE-INFO is not specified,
150 `mime-raw-message-info' is used."
151 (mime-entity-node-id (mime-raw-find-entity-from-point point message-info)))
153 (defsubst mime-raw-point-to-entity-number (point &optional message-info)
154 "Return entity-number from POINT in mime-raw-buffer.
155 If optional argument MESSAGE-INFO is not specified,
156 `mime-raw-message-info' is used."
157 (reverse (mime-raw-point-to-entity-node-id point message-info)))
159 (defsubst mime-raw-entity-parent (entity &optional message-info)
160 "Return mother entity of ENTITY.
161 If optional argument MESSAGE-INFO is not specified,
162 `mime-raw-message-info' is used."
163 (mime-raw-find-entity-from-node-id (cdr (mime-entity-node-id entity))
166 (defun mime-raw-flatten-message-info (&optional message-info)
167 "Return list of entity in mime-raw-buffer.
168 If optional argument MESSAGE-INFO is not specified,
169 `mime-raw-message-info' is used."
171 (setq message-info mime-raw-message-info))
172 (let ((dest (list message-info))
173 (rcl (mime-entity-children message-info)))
175 (setq dest (nconc dest (mime-raw-flatten-message-info (car rcl))))
176 (setq rcl (cdr rcl)))
180 ;;; @ presentation of preview
186 ;;; @@@ predicate function
189 (defun mime-view-entity-button-visible-p (entity message-info)
190 "Return non-nil if header of ENTITY is visible.
191 Please redefine this function if you want to change default setting."
192 (let ((media-type (mime-entity-media-type entity))
193 (media-subtype (mime-entity-media-subtype entity)))
194 (or (not (eq media-type 'application))
195 (and (not (eq media-subtype 'x-selection))
196 (or (not (eq media-subtype 'octet-stream))
198 (mime-raw-entity-parent entity message-info)))
199 (or (not (eq (mime-entity-media-type mother-entity)
201 (not (eq (mime-entity-media-subtype mother-entity)
206 ;;; @@@ entity button generator
209 (defun mime-view-insert-entity-button (entity message-info subj)
210 "Insert entity-button of ENTITY."
211 (let ((entity-node-id (mime-entity-node-id entity))
212 (params (mime-entity-parameters entity)))
214 (let ((access-type (assoc "access-type" params))
215 (num (or (cdr (assoc "x-part-number" params))
216 (if (consp entity-node-id)
219 (format "%s" (1+ num))
221 (reverse entity-node-id) ".")
225 (let ((server (assoc "server" params)))
226 (setq access-type (cdr access-type))
228 (format "%s %s ([%s] %s)"
229 num subj access-type (cdr server))
230 (let ((site (cdr (assoc "site" params)))
231 (dir (cdr (assoc "directory" params)))
233 (format "%s %s ([%s] %s:%s)"
234 num subj access-type site dir)
238 (let ((media-type (mime-entity-media-type entity))
239 (media-subtype (mime-entity-media-subtype entity))
240 (charset (cdr (assoc "charset" params)))
241 (encoding (mime-entity-encoding entity)))
245 (format " <%s/%s%s%s>"
246 media-type media-subtype
248 (concat "; " charset)
251 (concat " (" encoding ")")
253 (if (>= (+ (current-column)(length rest))(window-width))
257 (function mime-preview-play-current-entity))
264 ;;; @@@ predicate function
267 (defvar mime-view-childrens-header-showing-Content-Type-list
268 '("message/rfc822" "message/news"))
270 (defun mime-view-header-visible-p (entity message-info)
271 "Return non-nil if header of ENTITY is visible."
272 (let ((entity-node-id (mime-entity-node-id entity)))
273 (member (mime-entity-type/subtype
274 (mime-raw-find-entity-from-node-id
275 (cdr entity-node-id) message-info))
276 mime-view-childrens-header-showing-Content-Type-list)
279 ;;; @@@ entity header filter
282 (defvar mime-view-content-header-filter-alist nil)
284 (defun mime-view-default-content-header-filter ()
285 (mime-view-cut-header)
286 (eword-decode-header)
289 ;;; @@@ entity field cutter
292 (defvar mime-view-ignored-field-list
293 '(".*Received" ".*Path" ".*Id" "References"
294 "Replied" "Errors-To"
295 "Lines" "Sender" ".*Host" "Xref"
296 "Content-Type" "Precedence"
298 "All fields that match this list will be hidden in MIME preview buffer.
299 Each elements are regexp of field-name.")
301 (defvar mime-view-ignored-field-regexp
303 (apply (function regexp-or) mime-view-ignored-field-list)
306 (defvar mime-view-visible-field-list '("Dnas.*" "Message-Id")
307 "All fields that match this list will be displayed in MIME preview buffer.
308 Each elements are regexp of field-name.")
310 (defun mime-view-cut-header ()
311 (goto-char (point-min))
312 (while (re-search-forward mime-view-ignored-field-regexp nil t)
313 (let* ((beg (match-beginning 0))
315 (name (buffer-substring beg end))
318 (let ((rest mime-view-visible-field-list))
320 (if (string-match (car rest) name)
323 (setq rest (cdr rest))))
326 (if (re-search-forward "^\\([^ \t]\\|$\\)" nil t)
335 ;;; @@@ predicate function
338 (defun mime-calist::field-match-method-as-default-rule (calist
339 field-type field-value)
340 (let ((s-field (assq field-type calist)))
341 (cond ((null s-field)
342 (cons (cons field-type field-value) calist)
346 (define-calist-field-match-method
347 'header #'mime-calist::field-match-method-as-default-rule)
349 (define-calist-field-match-method
350 'body #'mime-calist::field-match-method-as-default-rule)
353 (defvar mime-preview-condition nil
354 "Condition-tree about how to display entity.")
356 (ctree-set-calist-strictly
357 'mime-preview-condition '((type . application)(subtype . octet-stream)
360 (ctree-set-calist-strictly
361 'mime-preview-condition '((type . application)(subtype . octet-stream)
364 (ctree-set-calist-strictly
365 'mime-preview-condition '((type . application)(subtype . octet-stream)
369 (ctree-set-calist-strictly
370 'mime-preview-condition '((type . application)(subtype . pgp)
373 (ctree-set-calist-strictly
374 'mime-preview-condition '((type . application)(subtype . x-latex)
377 (ctree-set-calist-strictly
378 'mime-preview-condition '((type . application)(subtype . x-selection)
381 (ctree-set-calist-strictly
382 'mime-preview-condition '((type . application)(subtype . x-comment)
385 (ctree-set-calist-strictly
386 'mime-preview-condition '((type . message)(subtype . delivery-status)
389 (ctree-set-calist-strictly
390 'mime-preview-condition '((body . visible)
391 (body-presentation-method . with-filter)
392 (body-filter . mime-preview-filter-for-text/plain)))
394 (ctree-set-calist-strictly
395 'mime-preview-condition '((type . nil)
397 (body-presentation-method . with-filter)
398 (body-filter . mime-preview-filter-for-text/plain)))
400 (ctree-set-calist-strictly
401 'mime-preview-condition '((type . text)(subtype . enriched)
403 (body-presentation-method . with-filter)
405 . mime-preview-filter-for-text/enriched)))
407 (ctree-set-calist-strictly
408 'mime-preview-condition '((type . text)(subtype . richtext)
410 (body-presentation-method . with-filter)
412 . mime-preview-filter-for-text/richtext)))
414 (ctree-set-calist-strictly
415 'mime-preview-condition '((type . text)(subtype . t)
417 (body-presentation-method . with-filter)
418 (body-filter . mime-preview-filter-for-text/plain)))
420 (ctree-set-calist-strictly
421 'mime-preview-condition '((type . message)(subtype . partial)
422 (body-presentation-method
423 . mime-view-insert-message/partial-button)))
425 (defun mime-view-body-visible-p (entity message-info)
426 "Return non-nil if body of ENTITY is visible."
427 (ctree-match-calist mime-preview-condition
428 (list* (cons 'type (mime-entity-media-type entity))
429 (cons 'subtype (mime-entity-media-subtype entity))
430 (cons 'encoding (mime-entity-encoding entity))
431 (cons 'major-mode major-mode)
432 (mime-entity-parameters entity))))
435 ;;; @@@ entity filter
438 (autoload 'mime-preview-filter-for-text/plain "mime-text")
439 (autoload 'mime-preview-filter-for-text/enriched "mime-text")
440 (autoload 'mime-preview-filter-for-text/richtext "mime-text")
442 (defvar mime-text-decoder-alist
443 '((mime-show-message-mode . mime-text-decode-buffer)
444 (mime-temp-message-mode . mime-text-decode-buffer)
445 (t . mime-text-decode-buffer-maybe)
447 "Alist of major-mode vs. mime-text-decoder.
448 Each element looks like (SYMBOL . FUNCTION). SYMBOL is major-mode or
451 Specification of FUNCTION is described in DOC-string of variable
454 This value is overridden by buffer local variable `mime-text-decoder'
458 (defvar mime-view-announcement-for-message/partial
459 (if (and (>= emacs-major-version 19) window-system)
461 This is message/partial style split message.
462 Please press `v' key in this buffer
463 or click here by mouse button-2. "
465 This is message/partial style split message.
466 Please press `v' key in this buffer. "
469 (defun mime-view-insert-message/partial-button (&optional situation)
471 (goto-char (point-max))
472 (if (not (search-backward "\n\n" nil t))
475 (goto-char (point-max))
476 ;;(narrow-to-region (point-max)(point-max))
477 ;;(insert mime-view-announcement-for-message/partial)
478 ;; (mime-add-button (point-min)(point-max)
479 ;; #'mime-preview-play-current-entity)
480 (mime-insert-button mime-view-announcement-for-message/partial
481 #'mime-preview-play-current-entity)
485 ;;; @@ entity separator
488 (defun mime-view-entity-separator-visible-p (entity message-info)
489 "Return non-nil if separator is needed for ENTITY."
490 (and (not (mime-view-header-visible-p entity message-info))
491 (not (mime-view-body-visible-p entity message-info))))
494 ;;; @ acting-condition
497 (defvar mime-acting-condition
498 '(((type . text)(subtype . plain)
499 (method "tm-plain" nil 'file "" 'encoding 'mode 'name)
500 (mode "play" "print")
502 ((type . text)(subtype . html)
503 (method "tm-html" nil 'file "" 'encoding 'mode 'name)
506 ((type . text)(subtype . x-rot13-47)
507 (method . mime-method-to-display-caesar)
510 ((type . text)(subtype . x-rot13-47-48)
511 (method . mime-method-to-display-caesar)
515 ((type . audio)(subtype . basic)
516 (method "tm-au" nil 'file "" 'encoding 'mode 'name)
521 (method "tm-image" nil 'file "" 'encoding 'mode 'name)
522 (mode "play" "print")
525 ((type . video)(subtype . mpeg)
526 (method "tm-mpeg" nil 'file "" 'encoding 'mode 'name)
530 ((type . application)(subtype . postscript)
531 (method "tm-ps" nil 'file "" 'encoding 'mode 'name)
532 (mode "play" "print")
534 ((type . application)(subtype . octet-stream)
535 (method . mime-method-to-save)(mode "play" "print")
538 ((type . message)(subtype . external-body)
539 ("access-type" . "anon-ftp")
540 (method . mime-method-to-display-message/external-ftp)
542 ((type . message)(subtype . rfc822)
543 (method . mime-method-to-display-message/rfc822)
546 ((type . message)(subtype . partial)
547 (method . mime-method-to-store-message/partial)
551 ((method "metamail" t "-m" "tm" "-x" "-d" "-z" "-e" 'file)
554 ((method . mime-method-to-save)(mode . "extract"))
558 ;;; @ quitting method
561 (defvar mime-preview-quitting-method-alist
562 '((mime-show-message-mode
563 . mime-preview-quitting-method-for-mime-show-message-mode))
564 "Alist of major-mode vs. quitting-method of mime-view.")
566 (defvar mime-view-over-to-previous-method-alist nil)
567 (defvar mime-view-over-to-next-method-alist nil)
569 (defvar mime-view-show-summary-method nil
570 "Alist of major-mode vs. show-summary-method.")
573 ;;; @ following method
576 (defvar mime-view-following-method-alist nil
577 "Alist of major-mode vs. following-method of mime-view.")
579 (defvar mime-view-following-required-fields-list
586 ;; hack from Gnus 5.0.4.
588 (defvar mime-view-x-face-to-pbm-command
589 "{ echo '/* Width=48, Height=48 */'; uncompface; } | icontopbm")
591 (defvar mime-view-x-face-command
592 (concat mime-view-x-face-to-pbm-command
594 "String to be executed to display an X-Face field.
595 The command will be executed in a sub-shell asynchronously.
596 The compressed face will be piped to this command.")
598 (defun mime-view-x-face-function ()
599 "Function to display X-Face field. You can redefine to customize."
600 ;; 1995/10/12 (c.f. tm-eng:130)
601 ;; fixed by Eric Ding <ericding@San-Jose.ate.slb.com>
603 (narrow-to-region (point-min) (re-search-forward "^$" nil t))
605 (goto-char (point-min))
606 (if (re-search-forward "^X-Face:[ \t]*" nil t)
607 (let ((beg (match-end 0))
608 (end (std11-field-end))
610 (call-process-region beg end "sh" nil 0 nil
611 "-c" mime-view-x-face-command)
618 (defvar mime-view-uuencode-encoding-name-list '("x-uue" "x-uuencode"))
620 (defvar mime-raw-buffer-coding-system-alist
621 `((t . ,(mime-charset-to-coding-system default-mime-charset)))
622 "Alist of major-mode vs. corresponding coding-system of `mime-raw-buffer'.")
628 (defvar mime-view-redisplay nil)
630 (defun mime-view-setup-buffers (&optional ctl encoding ibuf obuf)
636 (or mime-view-redisplay
637 (setq mime-raw-message-info (mime-parse-message ctl encoding))
639 (let ((message-info mime-raw-message-info)
640 (the-buf (current-buffer))
643 (setq obuf (concat "*Preview-" (buffer-name the-buf) "*")))
644 (set-buffer (get-buffer-create obuf))
645 (let ((inhibit-read-only t))
646 ;;(setq buffer-read-only nil)
649 (setq mime-raw-buffer the-buf)
650 (setq mime-preview-original-major-mode mode)
651 (setq major-mode 'mime-view-mode)
652 (setq mode-name "MIME-View")
653 (mime-view-display-message message-info the-buf obuf)
654 (set-buffer-modified-p nil)
656 (setq buffer-read-only t)
659 (setq mime-preview-buffer obuf)
662 (defun mime-view-display-message (message-info ibuf obuf)
663 (let* ((start (mime-entity-point-min message-info))
664 (end (mime-entity-point-max message-info))
665 (media-type (mime-entity-media-type message-info))
666 (media-subtype (mime-entity-media-subtype message-info))
667 (params (mime-entity-parameters message-info))
668 (encoding (mime-entity-encoding message-info))
669 end-of-header e nb ne subj)
672 (setq end-of-header (if (re-search-forward "^$" nil t)
675 (if (> end-of-header end)
676 (setq end-of-header end)
679 (narrow-to-region start end)
682 (mime-raw-get-subject params encoding)))
686 (narrow-to-region nb nb)
687 ;; Insert message-header
689 (narrow-to-region (point)(point))
690 (insert-buffer-substring mime-raw-buffer start end-of-header)
691 (let ((f (cdr (assq mime-preview-original-major-mode
692 mime-view-content-header-filter-alist))))
695 (mime-view-default-content-header-filter)
697 (run-hooks 'mime-view-content-header-filter-hook)
700 (ctree-match-calist mime-preview-condition
701 (list* (cons 'type media-type)
702 (cons 'subtype media-subtype)
703 (cons 'encoding encoding)
704 (cons 'major-mode major-mode)
707 (cdr (assq 'message-button situation)))
708 (body-presentation-method
709 (cdr (assq 'body-presentation-method situation))))
711 (goto-char (point-max))
712 (mime-view-insert-entity-button message-info message-info subj)
714 (cond ((eq body-presentation-method 'with-filter)
715 (let ((body-filter (cdr (assq 'body-filter situation))))
717 (narrow-to-region (point-max)(point-max))
718 (insert-buffer-substring mime-raw-buffer end-of-header end)
719 (funcall body-filter situation)
721 ((functionp body-presentation-method)
722 (funcall body-presentation-method situation)
724 ((null (mime-entity-children message-info))
725 (goto-char (point-max))
726 (mime-view-insert-entity-button message-info message-info subj)
729 (setq ne (point-max))
731 (put-text-property nb ne 'mime-view-raw-buffer ibuf)
732 (put-text-property nb ne 'mime-view-entity message-info)
734 (let ((children (mime-entity-children message-info)))
736 (mime-view-display-entity (car children) message-info ibuf obuf)
737 (setq children (cdr children))
740 (defun mime-view-display-entity (entity message-info ibuf obuf)
741 (let* ((start (mime-entity-point-min entity))
742 (end (mime-entity-point-max entity))
743 (media-type (mime-entity-media-type entity))
744 (media-subtype (mime-entity-media-subtype entity))
745 (params (mime-entity-parameters entity))
746 (encoding (mime-entity-encoding entity))
747 end-of-header e nb ne subj)
750 (setq end-of-header (if (re-search-forward "^$" nil t)
753 (if (> end-of-header end)
754 (setq end-of-header end)
757 (narrow-to-region start end)
760 (mime-raw-get-subject params encoding)))
764 (narrow-to-region nb nb)
765 (if (mime-view-entity-button-visible-p entity message-info)
766 (mime-view-insert-entity-button entity message-info subj)
768 (if (mime-view-header-visible-p entity message-info)
770 (narrow-to-region (point)(point))
771 (insert-buffer-substring mime-raw-buffer start end-of-header)
772 (let ((f (cdr (assq mime-preview-original-major-mode
773 mime-view-content-header-filter-alist))))
776 (mime-view-default-content-header-filter)
778 (run-hooks 'mime-view-content-header-filter-hook)
781 (ctree-match-calist mime-preview-condition
782 (list* (cons 'type media-type)
783 (cons 'subtype media-subtype)
784 (cons 'encoding encoding)
785 (cons 'major-mode major-mode)
787 (body-presentation-method
788 (cdr (assq 'body-presentation-method situation))))
789 (cond ((eq body-presentation-method 'with-filter)
790 (let ((body-filter (cdr (assq 'body-filter situation))))
792 (narrow-to-region (point-max)(point-max))
793 (insert-buffer-substring mime-raw-buffer end-of-header end)
794 (funcall body-filter situation)
796 ((functionp body-presentation-method)
797 (funcall body-presentation-method situation)
799 (when (mime-view-entity-separator-visible-p entity message-info)
800 (goto-char (point-max))
803 (setq ne (point-max))
805 (put-text-property nb ne 'mime-view-raw-buffer ibuf)
806 (put-text-property nb ne 'mime-view-entity entity)
808 (let ((children (mime-entity-children entity)))
810 (mime-view-display-entity (car children) message-info ibuf obuf)
811 (setq children (cdr children))
814 (defun mime-raw-get-uu-filename (param &optional encoding)
815 (if (member (or encoding
816 (cdr (assq 'encoding param))
818 mime-view-uuencode-encoding-name-list)
820 (or (if (re-search-forward "^begin [0-9]+ " nil t)
821 (if (looking-at ".+$")
822 (buffer-substring (match-beginning 0)(match-end 0))
827 (defun mime-raw-get-subject (param &optional encoding)
828 (or (std11-find-field-body '("Content-Description" "Subject"))
830 (if (or (and (setq ret (mime/Content-Disposition))
831 (setq ret (assoc "filename" (cdr ret)))
833 (setq ret (assoc "name" param))
834 (setq ret (assoc "x-name" param))
836 (std11-strip-quoted-string (cdr ret))
838 (mime-raw-get-uu-filename param encoding)
842 ;;; @ MIME viewer mode
845 (defconst mime-view-menu-title "MIME-View")
846 (defconst mime-view-menu-list
847 '((up "Move to upper entity" mime-preview-move-to-upper)
848 (previous "Move to previous entity" mime-preview-move-to-previous)
849 (next "Move to next entity" mime-preview-move-to-next)
850 (scroll-down "Scroll-down" mime-preview-scroll-down-entity)
851 (scroll-up "Scroll-up" mime-preview-scroll-up-entity)
852 (play "Play current entity" mime-preview-play-current-entity)
853 (extract "Extract current entity" mime-preview-extract-current-entity)
854 (print "Print current entity" mime-preview-print-current-entity)
855 (x-face "Show X Face" mime-preview-display-x-face)
857 "Menu for MIME Viewer")
859 (cond (running-xemacs
860 (defvar mime-view-xemacs-popup-menu
861 (cons mime-view-menu-title
864 (vector (nth 1 item)(nth 2 item) t)
866 mime-view-menu-list)))
867 (defun mime-view-xemacs-popup-menu (event)
868 "Popup the menu in the MIME Viewer buffer"
870 (select-window (event-window event))
871 (set-buffer (event-buffer event))
872 (popup-menu 'mime-view-xemacs-popup-menu))
873 (defvar mouse-button-2 'button2)
876 (defvar mouse-button-2 [mouse-2])
879 (defun mime-view-define-keymap (&optional default)
880 (let ((mime-view-mode-map (if (keymapp default)
881 (copy-keymap default)
884 (define-key mime-view-mode-map
885 "u" (function mime-preview-move-to-upper))
886 (define-key mime-view-mode-map
887 "p" (function mime-preview-move-to-previous))
888 (define-key mime-view-mode-map
889 "n" (function mime-preview-move-to-next))
890 (define-key mime-view-mode-map
891 "\e\t" (function mime-preview-move-to-previous))
892 (define-key mime-view-mode-map
893 "\t" (function mime-preview-move-to-next))
894 (define-key mime-view-mode-map
895 " " (function mime-preview-scroll-up-entity))
896 (define-key mime-view-mode-map
897 "\M- " (function mime-preview-scroll-down-entity))
898 (define-key mime-view-mode-map
899 "\177" (function mime-preview-scroll-down-entity))
900 (define-key mime-view-mode-map
901 "\C-m" (function mime-preview-next-line-entity))
902 (define-key mime-view-mode-map
903 "\C-\M-m" (function mime-preview-previous-line-entity))
904 (define-key mime-view-mode-map
905 "v" (function mime-preview-play-current-entity))
906 (define-key mime-view-mode-map
907 "e" (function mime-preview-extract-current-entity))
908 (define-key mime-view-mode-map
909 "\C-c\C-p" (function mime-preview-print-current-entity))
910 (define-key mime-view-mode-map
911 "a" (function mime-preview-follow-current-entity))
912 (define-key mime-view-mode-map
913 "q" (function mime-preview-quit))
914 (define-key mime-view-mode-map
915 "h" (function mime-preview-show-summary))
916 (define-key mime-view-mode-map
917 "\C-c\C-x" (function mime-preview-kill-buffer))
918 ;; (define-key mime-view-mode-map
919 ;; "<" (function beginning-of-buffer))
920 ;; (define-key mime-view-mode-map
921 ;; ">" (function end-of-buffer))
922 (define-key mime-view-mode-map
923 "?" (function describe-mode))
924 (define-key mime-view-mode-map
925 [tab] (function mime-preview-move-to-next))
926 (define-key mime-view-mode-map
927 [delete] (function mime-preview-scroll-down-entity))
928 (define-key mime-view-mode-map
929 [backspace] (function mime-preview-scroll-down-entity))
930 (if (functionp default)
931 (cond (running-xemacs
932 (set-keymap-default-binding mime-view-mode-map default)
935 (setq mime-view-mode-map
936 (append mime-view-mode-map (list (cons t default))))
939 (define-key mime-view-mode-map
940 mouse-button-2 (function mime-button-dispatcher))
942 (cond (running-xemacs
943 (define-key mime-view-mode-map
944 mouse-button-3 (function mime-view-xemacs-popup-menu))
946 ((>= emacs-major-version 19)
947 (define-key mime-view-mode-map [menu-bar mime-view]
948 (cons mime-view-menu-title
949 (make-sparse-keymap mime-view-menu-title)))
952 (define-key mime-view-mode-map
953 (vector 'menu-bar 'mime-view (car item))
954 (cons (nth 1 item)(nth 2 item))
957 (reverse mime-view-menu-list)
960 (use-local-map mime-view-mode-map)
961 (run-hooks 'mime-view-define-keymap-hook)
964 (defsubst mime-maybe-hide-echo-buffer ()
965 "Clear mime-echo buffer and delete window for it."
966 (let ((buf (get-buffer mime-echo-buffer-name)))
971 (let ((win (get-buffer-window buf)))
978 (defun mime-view-mode (&optional mother ctl encoding ibuf obuf
979 default-keymap-or-function)
980 "Major mode for viewing MIME message.
982 Here is a list of the standard keys for mime-view-mode.
987 u Move to upper content
988 p or M-TAB Move to previous content
989 n or TAB Move to next content
990 SPC Scroll up or move to next content
991 M-SPC or DEL Scroll down or move to previous content
992 RET Move to next line
993 M-RET Move to previous line
994 v Decode current content as `play mode'
995 e Decode current content as `extract mode'
996 C-c C-p Decode current content as `print mode'
997 a Followup to current content.
1000 button-2 Move to point under the mouse cursor
1001 and decode current content as `play mode'
1004 (mime-maybe-hide-echo-buffer)
1005 (let ((ret (mime-view-setup-buffers ctl encoding ibuf obuf))
1006 (win-conf (current-window-configuration))
1009 (switch-to-buffer ret)
1010 (setq mime-preview-original-window-configuration win-conf)
1013 (setq mime-mother-buffer mother)
1015 (mime-view-define-keymap default-keymap-or-function)
1017 (next-single-property-change (point-min) 'mime-view-entity)))
1020 (goto-char (point-min))
1021 (search-forward "\n\n" nil t)
1023 (run-hooks 'mime-view-mode-hook)
1030 (autoload 'mime-preview-play-current-entity "mime-play"
1031 "Play current entity." t)
1033 (defun mime-preview-extract-current-entity ()
1034 "Extract current entity into file (maybe).
1035 It decodes current entity to call internal or external method as
1036 \"extract\" mode. The method is selected from variable
1037 `mime-acting-condition'."
1039 (mime-preview-play-current-entity "extract")
1042 (defun mime-preview-print-current-entity ()
1043 "Print current entity (maybe).
1044 It decodes current entity to call internal or external method as
1045 \"print\" mode. The method is selected from variable
1046 `mime-acting-condition'."
1048 (mime-preview-play-current-entity "print")
1055 (defun mime-preview-original-major-mode ()
1056 "Return major-mode of original buffer.
1057 If a current buffer has mime-mother-buffer, return original major-mode
1058 of the mother-buffer."
1059 (if mime-mother-buffer
1061 (set-buffer mime-mother-buffer)
1062 (mime-preview-original-major-mode)
1064 mime-preview-original-major-mode))
1066 (defun mime-preview-follow-current-entity ()
1067 "Write follow message to current entity.
1068 It calls following-method selected from variable
1069 `mime-view-following-method-alist'."
1071 (let ((message-info (get-text-property (point-min) 'mime-view-entity))
1073 (while (null (setq entity
1074 (get-text-property (point) 'mime-view-entity)))
1078 (previous-single-property-change (point) 'mime-view-entity))
1080 (entity-node-id (mime-entity-node-id entity))
1081 (len (length entity-node-id))
1085 (if (eq (next-single-property-change (point-min)
1091 ((eq (next-single-property-change p-beg 'mime-view-entity)
1093 (setq p-beg (point))
1095 (setq p-end (next-single-property-change p-beg 'mime-view-entity))
1097 (setq p-end (point-max))
1099 ((null entity-node-id)
1100 (setq p-end (point-max))
1108 (next-single-property-change
1109 (point) 'mime-view-entity))
1111 (let ((rc (mime-entity-node-id
1112 (get-text-property (point)
1113 'mime-view-entity))))
1114 (or (equal entity-node-id
1115 (nthcdr (- (length rc) len) rc))
1120 (setq p-end (point-max))
1123 (let* ((mode (mime-preview-original-major-mode))
1125 (format "%s-%s" (buffer-name) (reverse entity-node-id)))
1127 (the-buf (current-buffer))
1128 (a-buf mime-raw-buffer)
1131 (set-buffer (setq new-buf (get-buffer-create new-name)))
1133 (insert-buffer-substring the-buf p-beg p-end)
1134 (goto-char (point-min))
1135 (if (mime-view-header-visible-p entity message-info)
1136 (delete-region (goto-char (point-min))
1137 (if (re-search-forward "^$" nil t)
1141 (goto-char (point-min))
1143 (goto-char (point-min))
1144 (let ((entity-node-id (mime-entity-node-id entity)) ci str)
1152 (mime-raw-find-entity-from-node-id entity-node-id))
1155 (mime-entity-point-min ci)
1156 (mime-entity-point-max ci)
1158 (std11-header-string-except
1160 (apply (function regexp-or) fields)
1163 (eq (mime-entity-media-type ci) 'message)
1164 (eq (mime-entity-media-subtype ci) 'rfc822))
1170 (setq fields (std11-collect-field-names)
1171 entity-node-id (cdr entity-node-id))
1174 (let ((rest mime-view-following-required-fields-list))
1176 (let ((field-name (car rest)))
1177 (or (std11-field-body field-name)
1183 (set-buffer the-buf)
1184 (set-buffer mime-mother-buffer)
1185 (set-buffer mime-raw-buffer)
1186 (std11-field-body field-name)
1190 (setq rest (cdr rest))
1192 (eword-decode-header)
1194 (let ((f (cdr (assq mode mime-view-following-method-alist))))
1199 "Sorry, following method for %s is not implemented yet."
1208 (defun mime-preview-display-x-face ()
1210 (save-window-excursion
1211 (set-buffer mime-raw-buffer)
1212 (mime-view-x-face-function)
1219 (defun mime-preview-move-to-upper ()
1220 "Move to upper entity.
1221 If there is no upper entity, call function `mime-preview-quit'."
1224 (while (null (setq cinfo
1225 (get-text-property (point) 'mime-view-entity)))
1228 (let ((r (mime-raw-find-entity-from-node-id
1229 (cdr (mime-entity-node-id cinfo))
1230 (get-text-property 1 'mime-view-entity)))
1233 (while (setq point (previous-single-property-change
1234 (point) 'mime-view-entity))
1236 (if (eq r (get-text-property (point) 'mime-view-entity))
1243 (defun mime-preview-move-to-previous ()
1244 "Move to previous entity.
1245 If there is no previous entity, it calls function registered in
1246 variable `mime-view-over-to-previous-method-alist'."
1248 (while (null (get-text-property (point) 'mime-view-entity))
1252 (previous-single-property-change (point) 'mime-view-entity)))
1255 (let ((f (assq mime-preview-original-major-mode
1256 mime-view-over-to-previous-method-alist)))
1262 (defun mime-preview-move-to-next ()
1263 "Move to next entity.
1264 If there is no previous entity, it calls function registered in
1265 variable `mime-view-over-to-next-method-alist'."
1267 (let ((point (next-single-property-change (point) 'mime-view-entity)))
1270 (let ((f (assq mime-preview-original-major-mode
1271 mime-view-over-to-next-method-alist)))
1277 (defun mime-preview-scroll-up-entity (&optional h)
1278 "Scroll up current entity.
1279 If reached to (point-max), it calls function registered in variable
1280 `mime-view-over-to-next-method-alist'."
1283 (setq h (1- (window-height)))
1285 (if (= (point) (point-max))
1286 (let ((f (assq mime-preview-original-major-mode
1287 mime-view-over-to-next-method-alist)))
1292 (or (next-single-property-change (point) 'mime-view-entity)
1295 (if (> (point) point)
1300 (defun mime-preview-scroll-down-entity (&optional h)
1301 "Scroll down current entity.
1302 If reached to (point-min), it calls function registered in variable
1303 `mime-view-over-to-previous-method-alist'."
1306 (setq h (1- (window-height)))
1308 (if (= (point) (point-min))
1309 (let ((f (assq mime-preview-original-major-mode
1310 mime-view-over-to-previous-method-alist)))
1317 (while (> (point) 1)
1319 (previous-single-property-change (point)
1325 (setq point (point-min))
1327 (forward-line (- h))
1328 (if (< (point) point)
1332 (defun mime-preview-next-line-entity ()
1334 (mime-preview-scroll-up-entity 1)
1337 (defun mime-preview-previous-line-entity ()
1339 (mime-preview-scroll-down-entity 1)
1346 (defun mime-preview-quit ()
1347 "Quit from MIME-preview buffer.
1348 It calls function registered in variable
1349 `mime-preview-quitting-method-alist'."
1351 (let ((r (assq mime-preview-original-major-mode
1352 mime-preview-quitting-method-alist)))
1357 (defun mime-preview-show-summary ()
1359 It calls function registered in variable
1360 `mime-view-show-summary-method'."
1362 (let ((r (assq mime-preview-original-major-mode
1363 mime-view-show-summary-method)))
1368 (defun mime-preview-kill-buffer ()
1370 (kill-buffer (current-buffer))
1377 (provide 'mime-view)
1379 (run-hooks 'mime-view-load-hook)
1381 ;;; mime-view.el ends here