;;; mm-decode.el --- Functions for decoding MIME things
-;; Copyright (C) 1998, 1999, 2000, 2001, 2002, 2003, 2004,
-;; 2005, 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+;; Copyright (C) 1998-2012 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; MORIOKA Tomohiko <morioka@jaist.ac.jp>
;;; Code:
-;; For Emacs < 22.2.
+;; For Emacs <22.2 and XEmacs.
(eval-and-compile
(unless (fboundp 'declare-function) (defmacro declare-function (&rest r))))
(require 'mail-parse)
(require 'mm-bodies)
+(require 'mm-archive)
(eval-when-compile (require 'cl)
(require 'term))
,disposition ,description ,cache ,id))
(defcustom mm-text-html-renderer
- (cond ((executable-find "w3m")
- (if (locate-library "w3m")
- 'w3m
- 'w3m-standalone))
+ (cond ((fboundp 'libxml-parse-html-region) 'shr)
+ ((executable-find "w3m") 'gnus-w3m)
((executable-find "links") 'links)
((executable-find "lynx") 'lynx)
((locate-library "w3") 'w3)
"Render of HTML contents.
It is one of defined renderer types, or a rendering function.
The defined renderer types are:
-`w3m' : use emacs-w3m;
-`w3m-standalone': use w3m;
+`shr': use the built-in Gnus HTML renderer;
+`gnus-w3m': use Gnus renderer based on w3m;
+`w3m': use emacs-w3m;
+`w3m-standalone': use plain w3m;
`links': use links;
-`lynx' : use lynx;
-`w3' : use Emacs/W3;
-`html2text' : use html2text;
+`lynx': use lynx;
+`w3': use Emacs/W3;
+`html2text': use html2text;
nil : use external viewer (default web browser)."
- :version "23.0" ;; No Gnus
- :type '(choice (const w3)
- (const w3m :tag "emacs-w3m")
+ :version "24.1"
+ :type '(choice (const shr)
+ (const gnus-w3m)
+ (const w3)
+ (const w3m :tag "emacs-w3m")
(const w3m-standalone :tag "standalone w3m" )
(const links)
(const lynx)
(function))
:group 'mime-display)
-(defvar mm-inline-text-html-renderer nil
- "Function used for rendering inline HTML contents.
-It is suggested to customize `mm-text-html-renderer' instead.")
-
(defcustom mm-inline-text-html-with-images nil
"If non-nil, Gnus will allow retrieving images in HTML contents with
the <img> tags. It has no effect on Emacs/w3. See also the
("image/tiff"
mm-inline-image
(lambda (handle)
- (mm-valid-and-fit-image-p 'tiff handle)) )
+ (mm-valid-and-fit-image-p 'tiff handle)))
("image/xbm"
mm-inline-image
(lambda (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)
- ;; If the diff-mode.el package is installed, the function is
- ;; autoloaded. Checking (locate-library "diff-mode") would be trying
- ;; to cater to broken installations. OTOH checking the function
- ;; makes it possible to install another package which provides an
- ;; alternative implementation of diff-mode. --Stef
- (fboundp 'diff-mode)))
+ ("text/x-patch" mm-display-patch-inline identity)
;; In case mime.types uses x-diff (as does Debian's mime-support-3.40).
- ("text/x-diff" mm-display-patch-inline
- (lambda (handle) (fboundp 'diff-mode)))
+ ("text/x-diff" mm-display-patch-inline identity)
("application/emacs-lisp" mm-display-elisp-inline identity)
("application/x-emacs-lisp" mm-display-elisp-inline identity)
+ ("application/x-shellscript" mm-display-shell-script-inline identity)
+ ("application/x-sh" mm-display-shell-script-inline identity)
+ ("text/x-sh" mm-display-shell-script-inline identity)
+ ("application/javascript" mm-display-javascript-inline identity)
("text/dns" mm-display-dns-inline identity)
+ ("text/x-org" mm-display-org-inline identity)
("text/html"
mm-inline-text-html
(lambda (handle)
- (or mm-inline-text-html-renderer
- mm-text-html-renderer)))
+ mm-text-html-renderer))
("text/x-vcard"
mm-inline-text-vcard
(lambda (handle)
("multipart/alternative" ignore identity)
("multipart/mixed" ignore identity)
("multipart/related" ignore identity)
+ ("image/.*"
+ mm-inline-image
+ (lambda (handle)
+ (and (mm-valid-image-format-p 'imagemagick)
+ (mm-with-unibyte-buffer
+ (mm-insert-part handle)
+ (let ((image
+ (ignore-errors
+ (if (fboundp 'create-image)
+ (create-image (buffer-string) 'imagemagick 'data-p)
+ (mm-create-image-xemacs (mm-handle-media-subtype handle))))))
+ (when image
+ (setcar (cdr handle) (list "image/imagemagick"))
+ (mm-image-fit-p handle)))))))
;; Disable audio and image
("audio/.*" ignore ignore)
("image/.*" ignore ignore)
"application/pkcs7-signature" "application/x-pkcs7-mime"
"application/pkcs7-mime"
;; Mutt still uses this even though it has already been withdrawn.
- "application/pgp\\'")
+ "application/pgp\\'"
+ "text/x-org")
"A list of MIME types to be displayed automatically."
:type '(repeat regexp)
:group 'mime-display)
(\"text/html\" \"text/richtext\")
Adding \"image/.*\" might also be useful. Spammers use it as the
-prefered part of multipart/alternative messages. See also
+preferred part of multipart/alternative messages. See also
`gnus-buttonized-mime-types', to which adding \"multipart/alternative\"
enables you to choose manually one of two types those mails include."
:type '(repeat regexp) ;; See `mm-preferred-alternative-precedence'.
:group 'mime-display)
(defcustom mm-inline-large-images nil
- "If non-nil, then all images fit in the buffer."
- :type 'boolean
+ "If t, then all images fit in the buffer.
+If 'resize, try to resize the images so they fit."
+ :type '(radio
+ (const :tag "Inline large images as they are." t)
+ (const :tag "Resize large images." resize)
+ (const :tag "Do not inline large images." nil))
:group 'mime-display)
(defcustom mm-file-name-rewrite-functions
(setq ct (mail-fetch-field "content-type")
ctl (and ct (mail-header-parse-content-type ct))
cte (mail-fetch-field "content-transfer-encoding")
- cd (mail-fetch-field "content-disposition")
+ cd (or (mail-fetch-field "content-disposition")
+ (when (and ctl
+ (eq 'mm-inline-text
+ (cadr (mm-assoc-string-match
+ mm-inline-media-tests
+ (car ctl)))))
+ "inline"))
;; Newlines in description should be stripped so as
;; not to break the MIME tag into two or more lines.
description (message-fetch-field "content-description")
no-strict-mime
(and cd (mail-header-parse-content-disposition cd))
description id)
- ctl))))
+ ctl from))))
(when id
(when (string-match " *<\\(.*\\)> *" id)
(setq id (match-string 1 id)))
(if (equal "text/plain" (car ctl))
(assoc 'format ctl)
t))
- (mm-make-handle
- (mm-copy-to-buffer) ctl cte nil cdl description nil id)))
+ (let ((handle
+ (mm-make-handle
+ (mm-copy-to-buffer) ctl cte nil cdl description nil id))
+ (decoder (assoc (car ctl) mm-archive-decoders)))
+ (if (and decoder
+ (executable-find (cadr decoder)))
+ (mm-dissect-archive handle)
+ handle))))
(defun mm-dissect-multipart (ctl from)
(goto-char (point-min))
(save-restriction
(narrow-to-region start end)
(setq parts (nconc (list (mm-dissect-buffer t nil from)) parts)))))
- (mm-possibly-verify-or-decrypt (nreverse parts) ctl)))
+ (mm-possibly-verify-or-decrypt (nreverse parts) ctl from)))
(defun mm-copy-to-buffer ()
"Copy the contents of the current buffer to a fresh buffer."
(autoload 'mailcap-parse-mailcaps "mailcap")
(autoload 'mailcap-mime-info "mailcap")
-(defun mm-display-part (handle &optional no-default)
+(defun mm-display-part (handle &optional no-default force)
"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)
+ (if (and (not force)
+ (mm-handle-displayed-p handle))
(mm-remove-part handle)
(let* ((ehandle (if (equal (mm-handle-media-type handle)
"message/external-body")
;; In particular, the timer object (which is
;; a vector in Emacs but is a list in XEmacs)
;; requires that it is lexically scoped.
- (timer (run-at-time 2.0 nil 'ignore)))
+ (timer (run-at-time 30.0 nil 'ignore)))
(if (featurep 'xemacs)
(lambda (process state)
(when (eq 'exit (process-status process))
;; time to adjust it, since we know at this point that it should
;; be unibyte.
`(let* ((handle ,handle))
- (with-temp-buffer
- (mm-disable-multibyte)
- (insert-buffer-substring (mm-handle-buffer handle))
- (mm-decode-content-transfer-encoding
- (mm-handle-encoding handle)
- (mm-handle-media-type handle))
- ,@forms)))
+ (when (and (mm-handle-buffer handle)
+ (buffer-name (mm-handle-buffer handle)))
+ (with-temp-buffer
+ (mm-disable-multibyte)
+ (insert-buffer-substring (mm-handle-buffer handle))
+ (mm-decode-content-transfer-encoding
+ (mm-handle-encoding handle)
+ (mm-handle-media-type handle))
+ ,@forms))))
(put 'mm-with-part 'lisp-indent-function 1)
(put 'mm-with-part 'edebug-form-spec '(body))
(setq filename (gnus-map-function mm-file-name-rewrite-functions
(file-name-nondirectory filename))))
(setq file
- (read-file-name (or prompt "Save MIME part to: ")
- (or mm-default-directory default-directory)
- nil nil (or filename "")))
+ (read-file-name
+ (or prompt
+ (format "Save MIME part to (default %s): "
+ (or filename "")))
+ (or mm-default-directory default-directory)
+ (expand-file-name (or filename "")
+ (or mm-default-directory default-directory))))
+ (if (file-directory-p file)
+ (setq file (expand-file-name filename file))
+ (setq file (expand-file-name
+ file (or mm-default-directory default-directory))))
(setq mm-default-directory (file-name-directory file))
(and (or (not (file-exists-p file))
(yes-or-no-p (format "File %s already exists; overwrite? "
(mm-save-part-to-file handle file)
file))))
-(defun mm-add-meta-html-tag (handle &optional charset)
+(defun mm-add-meta-html-tag (handle &optional charset force-charset)
"Add meta html tag to specify CHARSET of HANDLE in the current buffer.
CHARSET defaults to the one HANDLE specifies. Existing meta tag that
-specifies charset will not be modified. Return t if meta tag is added
-or replaced."
+specifies charset will not be modified unless FORCE-CHARSET is non-nil.
+Return t if meta tag is added or replaced."
(when (equal (mm-handle-media-type handle) "text/html")
(when (or charset
(setq charset (mail-content-type-get (mm-handle-type handle)
(if (re-search-forward "\
<meta\\s-+http-equiv=[\"']?content-type[\"']?\\s-+content=[\"']\
text/\\(\\sw+\\)\\(?:\;\\s-*charset=\\(.+\\)\\)?[\"'][^>]*>" nil t)
- (if (and (match-beginning 2)
+ (if (and (not force-charset)
+ (match-beginning 2)
(string-match "\\`html\\'" (match-string 1)))
;; Don't modify existing meta tag.
nil
(mm-write-region (point-min) (point-max) file nil nil nil 'binary t)
(set-default-file-modes current-file-modes)))))
-(defun mm-pipe-part (handle)
- "Pipe HANDLE to a process."
- (let* ((name (mail-content-type-get (mm-handle-type handle) 'name))
- (command
- (gnus-read-shell-command
- "Shell command on MIME part: " mm-last-shell-command)))
+(defun mm-pipe-part (handle &optional cmd)
+ "Pipe HANDLE to a process.
+Use CMD as the process."
+ (let ((name (mail-content-type-get (mm-handle-type handle) 'name))
+ (command (or cmd
+ (gnus-read-shell-command
+ "Shell command on MIME part: " mm-last-shell-command))))
(mm-with-unibyte-buffer
(mm-insert-part handle)
(mm-add-meta-html-tag handle)
(let ((coding-system-for-write 'binary))
(shell-command-on-region (point-min) (point-max) command nil)))))
+(autoload 'gnus-completing-read "gnus-util")
+
(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))))
+ (mapcar (lambda (i) (cdr (assoc 'viewer i)))
(mailcap-mime-info type 'all)))
(method (let ((minibuffer-local-completion-map
mm-viewer-completion-map))
(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))
+ (setq handles (reverse handles))
+ (dolist (disc (reverse mm-discouraged-alternatives))
+ (dolist (handle (copy-sequence handles))
+ (when (string-match disc (mm-handle-media-type handle))
+ (setq handles (nconc (delete handle handles) (list handle))))))
+ ;; Remove empty parts.
+ (dolist (handle (copy-sequence handles))
+ (when (and (bufferp (mm-handle-buffer handle))
+ (not (with-current-buffer (mm-handle-buffer handle)
+ (goto-char (point-min))
+ (re-search-forward "[^ \t\n]" nil t))))
+ (setq handles (nconc (delete handle handles) (list handle)))))
+ (mapcar #'mm-handle-media-type handles))
(defun mm-get-content-id (id)
"Return the handle(s) referred to by ID."
(or (not image)
(if (featurep 'xemacs)
;; XEmacs' glyphs can actually tell us about their width, so
- ;; lets be nice and smart about them.
+ ;; let's be nice and smart about them.
(or mm-inline-large-images
(and (<= (glyph-width image) (window-pixel-width))
(<= (glyph-height image) (window-pixel-height))))
;; Handle XEmacs
((fboundp 'valid-image-instantiator-format-p)
(valid-image-instantiator-format-p format))
- ;; Handle Emacs 21
+ ;; Handle Emacs
((fboundp 'image-type-available-p)
(and (display-graphic-p)
(image-type-available-p format)))
(autoload 'mm-view-pkcs7 "mm-view")
-(defun mm-possibly-verify-or-decrypt (parts ctl)
+(defun mm-possibly-verify-or-decrypt (parts ctl &optional from)
(let ((type (car ctl))
(subtype (cadr (split-string (car ctl) "/")))
(mm-security-handle ctl) ;; (car CTL) is the type.
((eq mm-decrypt-option 'known) t)
(t (y-or-n-p
(format "Decrypt (S/MIME) part? "))))
- (mm-view-pkcs7 parts))
+ (mm-view-pkcs7 parts from))
(setq parts (mm-dissect-buffer t)))))
((equal subtype "signed")
(unless (and (setq protocol
(and (eq (mm-body-7-or-8) '7bit)
(not (mm-long-lines-p 76))))))
+(declare-function libxml-parse-html-region "xml.c"
+ (start end &optional base-url))
+(declare-function shr-insert-document "shr" (dom))
+(defvar shr-blocked-images)
+(defvar gnus-inhibit-images)
+(autoload 'gnus-blocked-images "gnus-art")
+
+(defun mm-shr (handle)
+ ;; Require since we bind its variables.
+ (require 'shr)
+ (let ((article-buffer (current-buffer))
+ (shr-content-function (lambda (id)
+ (let ((handle (mm-get-content-id id)))
+ (when handle
+ (mm-with-part handle
+ (buffer-string))))))
+ shr-inhibit-images shr-blocked-images charset char)
+ (if (and (boundp 'gnus-summary-buffer)
+ (bufferp gnus-summary-buffer)
+ (buffer-name gnus-summary-buffer))
+ (with-current-buffer gnus-summary-buffer
+ (setq shr-inhibit-images gnus-inhibit-images
+ shr-blocked-images (gnus-blocked-images)))
+ (setq shr-inhibit-images gnus-inhibit-images
+ shr-blocked-images (gnus-blocked-images)))
+ (unless handle
+ (setq handle (mm-dissect-buffer t)))
+ (setq charset (mail-content-type-get (mm-handle-type handle) 'charset))
+ (save-restriction
+ (narrow-to-region (point) (point))
+ (shr-insert-document
+ (mm-with-part handle
+ (insert (prog1
+ (if (and charset
+ (setq charset
+ (mm-charset-to-coding-system charset))
+ (not (eq charset 'ascii)))
+ (mm-decode-coding-string (buffer-string) charset)
+ (mm-string-as-multibyte (buffer-string)))
+ (erase-buffer)
+ (mm-enable-multibyte)))
+ (goto-char (point-min))
+ (setq case-fold-search t)
+ (while (re-search-forward
+ "&#\\(?:x\\([89][0-9a-f]\\)\\|\\(1[2-5][0-9]\\)\\);" nil t)
+ (when (setq char
+ (cdr (assq (if (match-beginning 1)
+ (string-to-number (match-string 1) 16)
+ (string-to-number (match-string 2)))
+ mm-extra-numeric-entities)))
+ (replace-match (char-to-string char))))
+ (libxml-parse-html-region (point-min) (point-max))))
+ (mm-handle-set-undisplayer
+ handle
+ `(lambda ()
+ (let ((inhibit-read-only t))
+ (delete-region ,(point-min-marker)
+ ,(point-max-marker))))))))
+
+(defun mm-handle-filename (handle)
+ "Return filename of HANDLE if any."
+ (or (mail-content-type-get (mm-handle-type handle)
+ 'name)
+ (mail-content-type-get (mm-handle-disposition handle)
+ 'filename)))
+
(provide 'mm-decode)
-;; arch-tag: 4f35d360-56b8-4030-9388-3ed82d359b9b
;;; mm-decode.el ends here
projects / gnus / blobdiff