mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-29 11:02:01 +00:00
3efe555424
make-temp-file. * mm-util.el (mm-make-temp-file): New function. * nneething.el (nneething-file-name): Use it. * mm-decode.el (mm-display-external, mm-create-image-xemacs): Ditto. * gnus-uu.el (gnus-uu-decode-binhex, gnus-uu-decode-binhex-view) (gnus-uu-digest-mail-forward, gnus-uu-initialize): Ditto. * gnus-start.el (gnus-slave-save-newsrc): Ditto. * message.el (message-mode): If buffer-file-name, don't set auto save file name. Trivial change from Geoff Greene <ggreene@wpi.edu>
854 lines
27 KiB
EmacsLisp
854 lines
27 KiB
EmacsLisp
;;; mm-decode.el --- functions for decoding MIME things
|
|
;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
|
|
|
|
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
|
|
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
|
|
;; This file is part of GNU Emacs.
|
|
|
|
;; GNU Emacs is free software; you can redistribute it and/or modify
|
|
;; it under the terms of the GNU General Public License as published by
|
|
;; the Free Software Foundation; either version 2, or (at your option)
|
|
;; any later version.
|
|
|
|
;; GNU Emacs is distributed in the hope that it will be useful,
|
|
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
;; GNU General Public License for more details.
|
|
|
|
;; You should have received a copy of the GNU General Public License
|
|
;; along with GNU Emacs; see the file COPYING. If not, write to the
|
|
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
|
|
;; Boston, MA 02111-1307, USA.
|
|
|
|
;;; Commentary:
|
|
|
|
;;; Code:
|
|
|
|
(require 'mail-parse)
|
|
(require 'mailcap)
|
|
(require 'mm-bodies)
|
|
(eval-when-compile (require 'cl))
|
|
|
|
(eval-and-compile
|
|
(autoload 'mm-inline-partial "mm-partial")
|
|
(autoload 'mm-insert-inline "mm-view"))
|
|
|
|
(defgroup mime-display ()
|
|
"Display of MIME in mail and news articles."
|
|
:link '(custom-manual "(emacs-mime)Customization")
|
|
:version "21.1"
|
|
:group 'mail
|
|
:group 'news
|
|
:group 'multimedia)
|
|
|
|
;;; Convenience macros.
|
|
|
|
(defmacro mm-handle-buffer (handle)
|
|
`(nth 0 ,handle))
|
|
(defmacro mm-handle-type (handle)
|
|
`(nth 1 ,handle))
|
|
(defsubst mm-handle-media-type (handle)
|
|
(if (stringp (car handle))
|
|
(car handle)
|
|
(car (mm-handle-type handle))))
|
|
(defsubst mm-handle-media-supertype (handle)
|
|
(car (split-string (mm-handle-media-type handle) "/")))
|
|
(defsubst mm-handle-media-subtype (handle)
|
|
(cadr (split-string (mm-handle-media-type handle) "/")))
|
|
(defmacro mm-handle-encoding (handle)
|
|
`(nth 2 ,handle))
|
|
(defmacro mm-handle-undisplayer (handle)
|
|
`(nth 3 ,handle))
|
|
(defmacro mm-handle-set-undisplayer (handle function)
|
|
`(setcar (nthcdr 3 ,handle) ,function))
|
|
(defmacro mm-handle-disposition (handle)
|
|
`(nth 4 ,handle))
|
|
(defmacro mm-handle-description (handle)
|
|
`(nth 5 ,handle))
|
|
(defmacro mm-handle-cache (handle)
|
|
`(nth 6 ,handle))
|
|
(defmacro mm-handle-set-cache (handle contents)
|
|
`(setcar (nthcdr 6 ,handle) ,contents))
|
|
(defmacro mm-handle-id (handle)
|
|
`(nth 7 ,handle))
|
|
(defmacro mm-make-handle (&optional buffer type encoding undisplayer
|
|
disposition description cache
|
|
id)
|
|
`(list ,buffer ,type ,encoding ,undisplayer
|
|
,disposition ,description ,cache ,id))
|
|
|
|
(defcustom mm-inline-media-tests
|
|
'(("image/jpeg"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'jpeg handle)))
|
|
("image/png"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'png handle)))
|
|
("image/gif"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'gif handle)))
|
|
("image/tiff"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'tiff handle)) )
|
|
("image/xbm"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'xbm handle)))
|
|
("image/x-xbitmap"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'xbm handle)))
|
|
("image/xpm"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'xpm handle)))
|
|
("image/x-pixmap"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'xpm handle)))
|
|
("image/bmp"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'bmp handle)))
|
|
("image/x-portable-bitmap"
|
|
mm-inline-image
|
|
(lambda (handle)
|
|
(mm-valid-and-fit-image-p 'pbm handle)))
|
|
("text/plain" mm-inline-text identity)
|
|
("text/enriched" mm-inline-text identity)
|
|
("text/richtext" mm-inline-text identity)
|
|
("text/x-patch" mm-display-patch-inline
|
|
(lambda (handle)
|
|
(locate-library "diff-mode")))
|
|
("application/emacs-lisp" mm-display-elisp-inline identity)
|
|
("text/html"
|
|
mm-inline-text
|
|
(lambda (handle)
|
|
(locate-library "w3")))
|
|
("text/x-vcard"
|
|
mm-inline-text
|
|
(lambda (handle)
|
|
(or (featurep 'vcard)
|
|
(locate-library "vcard"))))
|
|
("message/delivery-status" mm-inline-text identity)
|
|
("message/rfc822" mm-inline-message identity)
|
|
("message/partial" mm-inline-partial identity)
|
|
("text/.*" mm-inline-text identity)
|
|
("audio/wav" mm-inline-audio
|
|
(lambda (handle)
|
|
(and (or (featurep 'nas-sound) (featurep 'native-sound))
|
|
(device-sound-enabled-p))))
|
|
("audio/au"
|
|
mm-inline-audio
|
|
(lambda (handle)
|
|
(and (or (featurep 'nas-sound) (featurep 'native-sound))
|
|
(device-sound-enabled-p))))
|
|
("application/pgp-signature" ignore identity)
|
|
("multipart/alternative" ignore identity)
|
|
("multipart/mixed" ignore identity)
|
|
("multipart/related" ignore identity))
|
|
"Alist of media types/tests saying whether types can be displayed inline."
|
|
:type '(repeat (list (string :tag "MIME type")
|
|
(function :tag "Display function")
|
|
(function :tag "Display test")))
|
|
:group 'mime-display)
|
|
|
|
(defcustom mm-inlined-types
|
|
'("image/.*" "text/.*" "message/delivery-status" "message/rfc822"
|
|
"message/partial" "application/emacs-lisp"
|
|
"application/pgp-signature")
|
|
"List of media types that are to be displayed inline."
|
|
:type '(repeat string)
|
|
:group 'mime-display)
|
|
|
|
(defcustom mm-automatic-display
|
|
'("text/plain" "text/enriched" "text/richtext" "text/html"
|
|
"text/x-vcard" "image/.*" "message/delivery-status" "multipart/.*"
|
|
"message/rfc822" "text/x-patch" "application/pgp-signature"
|
|
"application/emacs-lisp")
|
|
"A list of MIME types to be displayed automatically."
|
|
:type '(repeat string)
|
|
:group 'mime-display)
|
|
|
|
(defcustom mm-attachment-override-types '("text/x-vcard")
|
|
"Types to have \"attachment\" ignored if they can be displayed inline."
|
|
:type '(repeat string)
|
|
:group 'mime-display)
|
|
|
|
(defcustom mm-inline-override-types nil
|
|
"Types to be treated as attachments even if they can be displayed inline."
|
|
:type '(repeat string)
|
|
:group 'mime-display)
|
|
|
|
(defcustom mm-automatic-external-display nil
|
|
"List of MIME type regexps that will be displayed externally automatically."
|
|
:type '(repeat string)
|
|
:group 'mime-display)
|
|
|
|
(defcustom mm-discouraged-alternatives nil
|
|
"List of MIME types that are discouraged when viewing multipart/alternative.
|
|
Viewing agents are supposed to view the last possible part of a message,
|
|
as that is supposed to be the richest. However, users may prefer other
|
|
types instead, and this list says what types are most unwanted. If,
|
|
for instance, text/html parts are very unwanted, and text/richtext are
|
|
somewhat unwanted, then the value of this variable should be set
|
|
to:
|
|
|
|
(\"text/html\" \"text/richtext\")"
|
|
:type '(repeat string)
|
|
:group 'mime-display)
|
|
|
|
(defvar mm-tmp-directory
|
|
(cond ((fboundp 'temp-directory) (temp-directory))
|
|
((boundp 'temporary-file-directory) temporary-file-directory)
|
|
("/tmp/"))
|
|
"Where mm will store its temporary files.")
|
|
|
|
(defcustom mm-inline-large-images nil
|
|
"If non-nil, then all images fit in the buffer."
|
|
:type 'boolean
|
|
:group 'mime-display)
|
|
|
|
;;; Internal variables.
|
|
|
|
(defvar mm-dissection-list nil)
|
|
(defvar mm-last-shell-command "")
|
|
(defvar mm-content-id-alist nil)
|
|
|
|
;; According to RFC2046, in particular, in a digest, the default
|
|
;; Content-Type value for a body part is changed from "text/plain" to
|
|
;; "message/rfc822".
|
|
(defvar mm-dissect-default-type "text/plain")
|
|
|
|
(defvar mm-viewer-completion-map
|
|
(let ((map (make-sparse-keymap 'mm-viewer-completion-map)))
|
|
(set-keymap-parent map minibuffer-local-completion-map)
|
|
map)
|
|
"Keymap for input viewer with completion.")
|
|
|
|
;; Should we bind other key to minibuffer-complete-word?
|
|
(define-key mm-viewer-completion-map " " 'self-insert-command)
|
|
|
|
;;; The functions.
|
|
|
|
(defun mm-dissect-buffer (&optional no-strict-mime)
|
|
"Dissect the current buffer and return a list of MIME handles."
|
|
(save-excursion
|
|
(let (ct ctl type subtype cte cd description id result)
|
|
(save-restriction
|
|
(mail-narrow-to-head)
|
|
(when (or no-strict-mime
|
|
(mail-fetch-field "mime-version"))
|
|
(setq ct (mail-fetch-field "content-type")
|
|
ctl (ignore-errors (mail-header-parse-content-type ct))
|
|
cte (mail-fetch-field "content-transfer-encoding")
|
|
cd (mail-fetch-field "content-disposition")
|
|
description (mail-fetch-field "content-description")
|
|
id (mail-fetch-field "content-id"))))
|
|
(when cte
|
|
(setq cte (mail-header-strip cte)))
|
|
(if (or (not ctl)
|
|
(not (string-match "/" (car ctl))))
|
|
(mm-dissect-singlepart
|
|
(list mm-dissect-default-type)
|
|
(and cte (intern (downcase (mail-header-remove-whitespace
|
|
(mail-header-remove-comments
|
|
cte)))))
|
|
no-strict-mime
|
|
(and cd (ignore-errors (mail-header-parse-content-disposition cd)))
|
|
description)
|
|
(setq type (split-string (car ctl) "/"))
|
|
(setq subtype (cadr type)
|
|
type (pop type))
|
|
(setq
|
|
result
|
|
(cond
|
|
((equal type "multipart")
|
|
(let ((mm-dissect-default-type (if (equal subtype "digest")
|
|
"message/rfc822"
|
|
"text/plain")))
|
|
(cons (car ctl) (mm-dissect-multipart ctl))))
|
|
(t
|
|
(mm-dissect-singlepart
|
|
ctl
|
|
(and cte (intern (downcase (mail-header-remove-whitespace
|
|
(mail-header-remove-comments
|
|
cte)))))
|
|
no-strict-mime
|
|
(and cd (ignore-errors (mail-header-parse-content-disposition cd)))
|
|
description id))))
|
|
(when id
|
|
(when (string-match " *<\\(.*\\)> *" id)
|
|
(setq id (match-string 1 id)))
|
|
(push (cons id result) mm-content-id-alist))
|
|
result))))
|
|
|
|
(defun mm-dissect-singlepart (ctl cte &optional force cdl description id)
|
|
(when (or force
|
|
(if (equal "text/plain" (car ctl))
|
|
(assoc 'format ctl)
|
|
t))
|
|
(let ((res (mm-make-handle
|
|
(mm-copy-to-buffer) ctl cte nil cdl description nil id)))
|
|
(push (car res) mm-dissection-list)
|
|
res)))
|
|
|
|
(defun mm-remove-all-parts ()
|
|
"Remove all MIME handles."
|
|
(interactive)
|
|
(mapcar 'mm-remove-part mm-dissection-list)
|
|
(setq mm-dissection-list nil))
|
|
|
|
(defun mm-dissect-multipart (ctl)
|
|
(goto-char (point-min))
|
|
(let* ((boundary (concat "\n--" (mail-content-type-get ctl 'boundary)))
|
|
(close-delimiter (concat (regexp-quote boundary) "--[ \t]*$"))
|
|
start parts
|
|
(end (save-excursion
|
|
(goto-char (point-max))
|
|
(if (re-search-backward close-delimiter nil t)
|
|
(match-beginning 0)
|
|
(point-max)))))
|
|
(setq boundary (concat (regexp-quote boundary) "[ \t]*$"))
|
|
(while (and (< (point) end) (re-search-forward boundary end t))
|
|
(goto-char (match-beginning 0))
|
|
(when start
|
|
(save-excursion
|
|
(save-restriction
|
|
(narrow-to-region start (point))
|
|
(setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
|
|
(forward-line 2)
|
|
(setq start (point)))
|
|
(when (and start (< start end))
|
|
(save-excursion
|
|
(save-restriction
|
|
(narrow-to-region start end)
|
|
(setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
|
|
(nreverse parts)))
|
|
|
|
(defun mm-copy-to-buffer ()
|
|
"Copy the contents of the current buffer to a fresh buffer."
|
|
(save-excursion
|
|
(let ((obuf (current-buffer))
|
|
beg)
|
|
(goto-char (point-min))
|
|
(search-forward-regexp "^\n" nil t)
|
|
(setq beg (point))
|
|
(set-buffer (generate-new-buffer " *mm*"))
|
|
(insert-buffer-substring obuf beg)
|
|
(current-buffer))))
|
|
|
|
(defun mm-display-part (handle &optional no-default)
|
|
"Display the MIME part represented by HANDLE.
|
|
Returns nil if the part is removed; inline if displayed inline;
|
|
external if displayed external."
|
|
(save-excursion
|
|
(mailcap-parse-mailcaps)
|
|
(if (mm-handle-displayed-p handle)
|
|
(mm-remove-part handle)
|
|
(let* ((type (mm-handle-media-type handle))
|
|
(method (mailcap-mime-info type)))
|
|
(if (mm-inlined-p handle)
|
|
(progn
|
|
(forward-line 1)
|
|
(mm-display-inline handle)
|
|
'inline)
|
|
(when (or method
|
|
(not no-default))
|
|
(if (and (not method)
|
|
(equal "text" (car (split-string type))))
|
|
(progn
|
|
(forward-line 1)
|
|
(mm-insert-inline handle (mm-get-part handle))
|
|
'inline)
|
|
(mm-display-external
|
|
handle (or method 'mailcap-save-binary-file)))))))))
|
|
|
|
(defun mm-display-external (handle method)
|
|
"Display HANDLE using METHOD."
|
|
(let ((outbuf (current-buffer)))
|
|
(mm-with-unibyte-buffer
|
|
(if (functionp method)
|
|
(let ((cur (current-buffer)))
|
|
(if (eq method 'mailcap-save-binary-file)
|
|
(progn
|
|
(set-buffer (generate-new-buffer " *mm*"))
|
|
(setq method nil))
|
|
(mm-insert-part handle)
|
|
(let ((win (get-buffer-window cur t)))
|
|
(when win
|
|
(select-window win)))
|
|
(switch-to-buffer (generate-new-buffer " *mm*")))
|
|
(mm-set-buffer-file-coding-system mm-binary-coding-system)
|
|
(insert-buffer-substring cur)
|
|
(goto-char (point-min))
|
|
(message "Viewing with %s" method)
|
|
(let ((mm (current-buffer))
|
|
(non-viewer (assq 'non-viewer
|
|
(mailcap-mime-info
|
|
(mm-handle-media-type handle) t))))
|
|
(unwind-protect
|
|
(if method
|
|
(funcall method)
|
|
(mm-save-part handle))
|
|
(when (and (not non-viewer)
|
|
method)
|
|
(mm-handle-set-undisplayer handle mm)))))
|
|
;; The function is a string to be executed.
|
|
(mm-insert-part handle)
|
|
(let* ((dir (mm-make-temp-file
|
|
(expand-file-name "emm." mm-tmp-directory) 'dir))
|
|
(filename (mail-content-type-get
|
|
(mm-handle-disposition handle) 'filename))
|
|
(mime-info (mailcap-mime-info
|
|
(mm-handle-media-type handle) t))
|
|
(needsterm (or (assoc "needsterm" mime-info)
|
|
(assoc "needsterminal" mime-info)))
|
|
(copiousoutput (assoc "copiousoutput" mime-info))
|
|
file buffer)
|
|
;; We create a private sub-directory where we store our files.
|
|
(set-file-modes dir 448)
|
|
(if filename
|
|
(setq file (expand-file-name (file-name-nondirectory filename)
|
|
dir))
|
|
(setq file (mm-make-temp-file (expand-file-name "mm." dir))))
|
|
(let ((coding-system-for-write mm-binary-coding-system))
|
|
(write-region (point-min) (point-max) file nil 'nomesg))
|
|
(message "Viewing with %s" method)
|
|
(cond (needsterm
|
|
(unwind-protect
|
|
(start-process "*display*" nil
|
|
"xterm"
|
|
"-e" shell-file-name
|
|
shell-command-switch
|
|
(mm-mailcap-command
|
|
method file (mm-handle-type handle)))
|
|
(mm-handle-set-undisplayer handle (cons file buffer)))
|
|
(message "Displaying %s..." (format method file))
|
|
'external)
|
|
(copiousoutput
|
|
(with-current-buffer outbuf
|
|
(forward-line 1)
|
|
(mm-insert-inline
|
|
handle
|
|
(unwind-protect
|
|
(progn
|
|
(call-process shell-file-name nil
|
|
(setq buffer
|
|
(generate-new-buffer "*mm*"))
|
|
nil
|
|
shell-command-switch
|
|
(mm-mailcap-command
|
|
method file (mm-handle-type handle)))
|
|
(if (buffer-live-p buffer)
|
|
(save-excursion
|
|
(set-buffer buffer)
|
|
(buffer-string))))
|
|
(progn
|
|
(ignore-errors (delete-file file))
|
|
(ignore-errors (delete-directory
|
|
(file-name-directory file)))
|
|
(ignore-errors (kill-buffer buffer))))))
|
|
'inline)
|
|
(t
|
|
(unwind-protect
|
|
(start-process "*display*"
|
|
(setq buffer
|
|
(generate-new-buffer "*mm*"))
|
|
shell-file-name
|
|
shell-command-switch
|
|
(mm-mailcap-command
|
|
method file (mm-handle-type handle)))
|
|
(mm-handle-set-undisplayer handle (cons file buffer)))
|
|
(message "Displaying %s..." (format method file))
|
|
'external)))))))
|
|
|
|
(defun mm-mailcap-command (method file type-list)
|
|
(let ((ctl (cdr type-list))
|
|
(beg 0)
|
|
(uses-stdin t)
|
|
out sub total)
|
|
(while (string-match "%{\\([^}]+\\)}\\|%s\\|%t\\|%%" method beg)
|
|
(push (substring method beg (match-beginning 0)) out)
|
|
(setq beg (match-end 0)
|
|
total (match-string 0 method)
|
|
sub (match-string 1 method))
|
|
(cond
|
|
((string= total "%%")
|
|
(push "%" out))
|
|
((string= total "%s")
|
|
(setq uses-stdin nil)
|
|
(push (mm-quote-arg file) out))
|
|
((string= total "%t")
|
|
(push (mm-quote-arg (car type-list)) out))
|
|
(t
|
|
(push (mm-quote-arg (or (cdr (assq (intern sub) ctl)) "")) out))))
|
|
(push (substring method beg (length method)) out)
|
|
(if uses-stdin
|
|
(progn
|
|
(push "<" out)
|
|
(push (mm-quote-arg file) out)))
|
|
(mapconcat 'identity (nreverse out) "")))
|
|
|
|
(defun mm-remove-parts (handles)
|
|
"Remove the displayed MIME parts represented by HANDLES."
|
|
(if (and (listp handles)
|
|
(bufferp (car handles)))
|
|
(mm-remove-part handles)
|
|
(let (handle)
|
|
(while (setq handle (pop handles))
|
|
(cond
|
|
((stringp handle)
|
|
;; Do nothing.
|
|
)
|
|
((and (listp handle)
|
|
(stringp (car handle)))
|
|
(mm-remove-parts (cdr handle)))
|
|
(t
|
|
(mm-remove-part handle)))))))
|
|
|
|
(defun mm-destroy-parts (handles)
|
|
"Remove the displayed MIME parts represented by HANDLES."
|
|
(if (and (listp handles)
|
|
(bufferp (car handles)))
|
|
(mm-destroy-part handles)
|
|
(let (handle)
|
|
(while (setq handle (pop handles))
|
|
(cond
|
|
((stringp handle)
|
|
;; Do nothing.
|
|
)
|
|
((and (listp handle)
|
|
(stringp (car handle)))
|
|
(mm-destroy-parts (cdr handle)))
|
|
(t
|
|
(mm-destroy-part handle)))))))
|
|
|
|
(defun mm-remove-part (handle)
|
|
"Remove the displayed MIME part represented by HANDLE."
|
|
(when (listp handle)
|
|
(let ((object (mm-handle-undisplayer handle)))
|
|
(ignore-errors
|
|
(cond
|
|
;; Internally displayed part.
|
|
((mm-annotationp object)
|
|
(delete-annotation object))
|
|
((or (functionp object)
|
|
(and (listp object)
|
|
(eq (car object) 'lambda)))
|
|
(funcall object))
|
|
;; Externally displayed part.
|
|
((consp object)
|
|
(ignore-errors (delete-file (car object)))
|
|
(ignore-errors (delete-directory (file-name-directory (car object))))
|
|
(ignore-errors (kill-buffer (cdr object))))
|
|
((bufferp object)
|
|
(when (buffer-live-p object)
|
|
(kill-buffer object)))))
|
|
(mm-handle-set-undisplayer handle nil))))
|
|
|
|
(defun mm-display-inline (handle)
|
|
(let* ((type (mm-handle-media-type handle))
|
|
(function (cadr (mm-assoc-string-match mm-inline-media-tests type))))
|
|
(funcall function handle)
|
|
(goto-char (point-min))))
|
|
|
|
(defun mm-assoc-string-match (alist type)
|
|
(dolist (elem alist)
|
|
(when (string-match (car elem) type)
|
|
(return elem))))
|
|
|
|
(defun mm-inlinable-p (handle)
|
|
"Say whether HANDLE can be displayed inline."
|
|
(let ((alist mm-inline-media-tests)
|
|
(type (mm-handle-media-type handle))
|
|
test)
|
|
(while alist
|
|
(when (string-match (caar alist) type)
|
|
(setq test (caddar alist)
|
|
alist nil)
|
|
(setq test (funcall test handle)))
|
|
(pop alist))
|
|
test))
|
|
|
|
(defun mm-automatic-display-p (handle)
|
|
"Say whether the user wants HANDLE to be displayed automatically."
|
|
(let ((methods mm-automatic-display)
|
|
(type (mm-handle-media-type handle))
|
|
method result)
|
|
(while (setq method (pop methods))
|
|
(when (and (not (mm-inline-override-p handle))
|
|
(string-match method type)
|
|
(mm-inlinable-p handle))
|
|
(setq result t
|
|
methods nil)))
|
|
result))
|
|
|
|
(defun mm-inlined-p (handle)
|
|
"Say whether the user wants HANDLE to be displayed automatically."
|
|
(let ((methods mm-inlined-types)
|
|
(type (mm-handle-media-type handle))
|
|
method result)
|
|
(while (setq method (pop methods))
|
|
(when (and (not (mm-inline-override-p handle))
|
|
(string-match method type)
|
|
(mm-inlinable-p handle))
|
|
(setq result t
|
|
methods nil)))
|
|
result))
|
|
|
|
(defun mm-attachment-override-p (handle)
|
|
"Say whether HANDLE should have attachment behavior overridden."
|
|
(let ((types mm-attachment-override-types)
|
|
(type (mm-handle-media-type handle))
|
|
ty)
|
|
(catch 'found
|
|
(while (setq ty (pop types))
|
|
(when (and (string-match ty type)
|
|
(mm-inlinable-p handle))
|
|
(throw 'found t))))))
|
|
|
|
(defun mm-inline-override-p (handle)
|
|
"Say whether HANDLE should have inline behavior overridden."
|
|
(let ((types mm-inline-override-types)
|
|
(type (mm-handle-media-type handle))
|
|
ty)
|
|
(catch 'found
|
|
(while (setq ty (pop types))
|
|
(when (string-match ty type)
|
|
(throw 'found t))))))
|
|
|
|
(defun mm-automatic-external-display-p (type)
|
|
"Return the user-defined method for TYPE."
|
|
(let ((methods mm-automatic-external-display)
|
|
method result)
|
|
(while (setq method (pop methods))
|
|
(when (string-match method type)
|
|
(setq result t
|
|
methods nil)))
|
|
result))
|
|
|
|
(defun mm-destroy-part (handle)
|
|
"Destroy the data structures connected to HANDLE."
|
|
(when (listp handle)
|
|
(mm-remove-part handle)
|
|
(when (buffer-live-p (mm-handle-buffer handle))
|
|
(kill-buffer (mm-handle-buffer handle)))))
|
|
|
|
(defun mm-handle-displayed-p (handle)
|
|
"Say whether HANDLE is displayed or not."
|
|
(mm-handle-undisplayer handle))
|
|
|
|
;;;
|
|
;;; Functions for outputting parts
|
|
;;;
|
|
|
|
(defun mm-get-part (handle)
|
|
"Return the contents of HANDLE as a string."
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(buffer-string)))
|
|
|
|
(defun mm-insert-part (handle)
|
|
"Insert the contents of HANDLE in the current buffer."
|
|
(let ((cur (current-buffer)))
|
|
(save-excursion
|
|
(if (member (mm-handle-media-supertype handle) '("text" "message"))
|
|
(with-temp-buffer
|
|
(insert-buffer-substring (mm-handle-buffer handle))
|
|
(mm-decode-content-transfer-encoding
|
|
(mm-handle-encoding handle)
|
|
(mm-handle-media-type handle))
|
|
(let ((temp (current-buffer)))
|
|
(set-buffer cur)
|
|
(insert-buffer-substring temp)))
|
|
(mm-with-unibyte-buffer
|
|
(insert-buffer-substring (mm-handle-buffer handle))
|
|
(mm-decode-content-transfer-encoding
|
|
(mm-handle-encoding handle)
|
|
(mm-handle-media-type handle))
|
|
(let ((temp (current-buffer)))
|
|
(set-buffer cur)
|
|
(insert-buffer-substring temp)))))))
|
|
|
|
(defvar mm-default-directory nil)
|
|
|
|
(defun mm-save-part (handle)
|
|
"Write HANDLE to a file."
|
|
(let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
|
|
(filename (mail-content-type-get
|
|
(mm-handle-disposition handle) 'filename))
|
|
file)
|
|
(when filename
|
|
(setq filename (file-name-nondirectory filename)))
|
|
(setq file
|
|
(read-file-name "Save MIME part to: "
|
|
(expand-file-name
|
|
(or filename name "")
|
|
(or mm-default-directory default-directory))))
|
|
(setq mm-default-directory (file-name-directory file))
|
|
(when (or (not (file-exists-p file))
|
|
(yes-or-no-p (format "File %s already exists; overwrite? "
|
|
file)))
|
|
(mm-save-part-to-file handle file))))
|
|
|
|
(defun mm-save-part-to-file (handle file)
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(let ((coding-system-for-write 'binary)
|
|
;; Don't re-compress .gz & al. Arguably we should make
|
|
;; `file-name-handler-alist' nil, but that would chop
|
|
;; ange-ftp, which is reasonable to use here.
|
|
(inhibit-file-name-operation 'write-region)
|
|
(inhibit-file-name-handlers
|
|
(cons 'jka-compr-handler inhibit-file-name-handlers)))
|
|
(write-region (point-min) (point-max) file))))
|
|
|
|
(defun mm-pipe-part (handle)
|
|
"Pipe HANDLE to a process."
|
|
(let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
|
|
(command
|
|
(read-string "Shell command on MIME part: " mm-last-shell-command)))
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(shell-command-on-region (point-min) (point-max) command nil))))
|
|
|
|
(defun mm-interactively-view-part (handle)
|
|
"Display HANDLE using METHOD."
|
|
(let* ((type (mm-handle-media-type handle))
|
|
(methods
|
|
(mapcar (lambda (i) (list (cdr (assoc 'viewer i))))
|
|
(mailcap-mime-info type 'all)))
|
|
(method (let ((minibuffer-local-completion-map
|
|
mm-viewer-completion-map))
|
|
(completing-read "Viewer: " methods))))
|
|
(when (string= method "")
|
|
(error "No method given"))
|
|
(if (string-match "^[^% \t]+$" method)
|
|
(setq method (concat method " %s")))
|
|
(mm-display-external handle method)))
|
|
|
|
(defun mm-preferred-alternative (handles &optional preferred)
|
|
"Say which of HANDLES are preferred."
|
|
(let ((prec (if preferred (list preferred)
|
|
(mm-preferred-alternative-precedence handles)))
|
|
p h result type handle)
|
|
(while (setq p (pop prec))
|
|
(setq h handles)
|
|
(while h
|
|
(setq handle (car h))
|
|
(setq type (mm-handle-media-type handle))
|
|
(when (and (equal p type)
|
|
(mm-automatic-display-p handle)
|
|
(or (stringp (car handle))
|
|
(not (mm-handle-disposition handle))
|
|
(equal (car (mm-handle-disposition handle))
|
|
"inline")))
|
|
(setq result handle
|
|
h nil
|
|
prec nil))
|
|
(pop h)))
|
|
result))
|
|
|
|
(defun mm-preferred-alternative-precedence (handles)
|
|
"Return the precedence based on HANDLES and `mm-discouraged-alternatives'."
|
|
(let ((seq (nreverse (mapcar #'mm-handle-media-type
|
|
handles))))
|
|
(dolist (disc (reverse mm-discouraged-alternatives))
|
|
(dolist (elem (copy-sequence seq))
|
|
(when (string-match disc elem)
|
|
(setq seq (nconc (delete elem seq) (list elem))))))
|
|
seq))
|
|
|
|
(defun mm-get-content-id (id)
|
|
"Return the handle(s) referred to by ID."
|
|
(cdr (assoc id mm-content-id-alist)))
|
|
|
|
(defun mm-get-image (handle)
|
|
"Return an image instance based on HANDLE."
|
|
(let ((type (mm-handle-media-subtype handle))
|
|
spec)
|
|
;; Allow some common translations.
|
|
(setq type
|
|
(cond
|
|
((equal type "x-pixmap")
|
|
"xpm")
|
|
((equal type "x-xbitmap")
|
|
"xbm")
|
|
((equal type "x-portable-bitmap")
|
|
"pbm")
|
|
(t type)))
|
|
(or (mm-handle-cache handle)
|
|
(mm-with-unibyte-buffer
|
|
(mm-insert-part handle)
|
|
(prog1
|
|
(setq spec
|
|
(ignore-errors
|
|
;; Avoid testing `make-glyph' since W3 may define
|
|
;; a bogus version of it.
|
|
(if (fboundp 'create-image)
|
|
(create-image (buffer-string) (intern type) 'data-p)
|
|
(cond
|
|
((equal type "xbm")
|
|
;; xbm images require special handling, since
|
|
;; the only way to create glyphs from these
|
|
;; (without a ton of work) is to write them
|
|
;; out to a file, and then create a file
|
|
;; specifier.
|
|
(let ((file (mm-make-temp-file
|
|
(expand-file-name "emm.xbm"
|
|
mm-tmp-directory))))
|
|
(unwind-protect
|
|
(progn
|
|
(write-region (point-min) (point-max) file)
|
|
(make-glyph (list (cons 'x file))))
|
|
(ignore-errors
|
|
(delete-file file)))))
|
|
(t
|
|
(make-glyph
|
|
(vector (intern type) :data (buffer-string))))))))
|
|
(mm-handle-set-cache handle spec))))))
|
|
|
|
(defun mm-image-fit-p (handle)
|
|
"Say whether the image in HANDLE will fit the current window."
|
|
(let ((image (mm-get-image handle)))
|
|
(if (fboundp 'glyph-width)
|
|
;; XEmacs' glyphs can actually tell us about their width, so
|
|
;; lets be nice and smart about them.
|
|
(or mm-inline-large-images
|
|
(and (< (glyph-width image) (window-pixel-width))
|
|
(< (glyph-height image) (window-pixel-height))))
|
|
(let* ((size (image-size image))
|
|
(w (car size))
|
|
(h (cdr size)))
|
|
(or mm-inline-large-images
|
|
(and (< h (1- (window-height))) ; Don't include mode line.
|
|
(< w (window-width))))))))
|
|
|
|
(defun mm-valid-image-format-p (format)
|
|
"Say whether FORMAT can be displayed natively by Emacs."
|
|
(cond
|
|
;; Handle XEmacs
|
|
((fboundp 'valid-image-instantiator-format-p)
|
|
(valid-image-instantiator-format-p format))
|
|
;; Handle Emacs 21
|
|
((fboundp 'image-type-available-p)
|
|
(and (display-graphic-p)
|
|
(image-type-available-p format)))
|
|
;; Nobody else can do images yet.
|
|
(t
|
|
nil)))
|
|
|
|
(defun mm-valid-and-fit-image-p (format handle)
|
|
"Say whether FORMAT can be displayed natively and HANDLE fits the window."
|
|
(and (mm-valid-image-format-p format)
|
|
(mm-image-fit-p handle)))
|
|
|
|
(provide 'mm-decode)
|
|
|
|
;;; mm-decode.el ends here
|