;;; Code:
-(require 'drums)
+(require 'mail-parse)
(require 'mailcap)
(require 'mm-bodies)
+;;; Convenience macros.
+
+(defmacro mm-handle-buffer (handle)
+ `(nth 0 ,handle))
+(defmacro mm-handle-type (handle)
+ `(nth 1 ,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))
+
(defvar mm-inline-media-tests
- '(("image/jpeg" mm-inline-image (featurep 'jpeg))
- ("image/png" mm-inline-image (featurep 'png))
- ("image/gif" mm-inline-image (featurep 'gif))
- ("image/tiff" mm-inline-image (featurep 'tiff))
- ("image/xbm" mm-inline-image (eq (device-type) 'x))
- ("image/xpm" mm-inline-image (featurep 'xpm))
- ("image/bmp" mm-inline-image (featurep 'bmp))
+ '(("image/jpeg" mm-inline-image
+ (and window-system (featurep 'jpeg) (mm-image-fit-p handle)))
+ ("image/png" mm-inline-image
+ (and window-system (featurep 'png) (mm-image-fit-p handle)))
+ ("image/gif" mm-inline-image
+ (and window-system (featurep 'gif) (mm-image-fit-p handle)))
+ ("image/tiff" mm-inline-image
+ (and window-system (featurep 'tiff) (mm-image-fit-p handle)))
+ ("image/xbm" mm-inline-image
+ (and window-system (fboundp 'device-type)
+ (eq (device-type) 'x)))
+ ("image/xpm" mm-inline-image
+ (and window-system (featurep 'xpm)))
+ ("image/bmp" mm-inline-image
+ (and window-system (featurep 'bmp)))
("text/plain" mm-inline-text t)
- ("text/html" mm-inline-text (featurep 'w3))
+ ("text/enriched" mm-inline-text t)
+ ("text/richtext" mm-inline-text t)
+ ("text/html" mm-inline-text (locate-library "w3"))
+ ("message/delivery-status" mm-inline-text t)
("audio/wav" mm-inline-audio
(and (or (featurep 'nas-sound) (featurep 'native-sound))
(device-sound-enabled-p)))
(defvar mm-user-display-methods
'(("image/.*" . inline)
- ("text/.*" . inline)))
+ ("text/.*" . inline)
+ ("message/delivery-status" . inline)))
(defvar mm-user-automatic-display
- '("text/plain" "image/gif"))
+ '("text/plain" "text/enriched" "text/richtext" "text/html"
+ "image/.*" "message/delivery-status" "multipart/.*"))
+
+(defvar mm-alternative-precedence
+ '("image/jpeg" "image/gif" "text/html" "text/enriched"
+ "text/richtext" "text/plain")
+ "List that describes the precedence of alternative parts.")
(defvar mm-tmp-directory "/tmp/"
"Where mm will store its temporary files.")
(defvar mm-dissection-list nil)
(defvar mm-last-shell-command "")
+(defvar mm-content-id-alist nil)
+
+;;; 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)
+ (let (ct ctl type subtype cte cd description id result)
(save-restriction
- (drums-narrow-to-header)
+ (mail-narrow-to-head)
(when (and (or no-strict-mime
(mail-fetch-field "mime-version"))
(setq ct (mail-fetch-field "content-type")))
- (setq ctl (drums-parse-content-type ct))
- (setq cte (mail-fetch-field "content-transfer-encoding"))))
- (when ctl
+ (setq ctl (condition-case () (mail-header-parse-content-type ct)
+ (error nil))
+ 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"))))
+ (if (not ctl)
+ (mm-dissect-singlepart
+ '("text/plain") nil no-strict-mime nil description)
(setq type (split-string (car ctl) "/"))
(setq subtype (cadr type)
type (pop type))
- (cond
- ((equal type "multipart")
- (mm-dissect-multipart ctl))
- (t
- (mm-dissect-singlepart ctl (and cte (intern cte))
- no-strict-mime)))))))
-
-(defun mm-dissect-singlepart (ctl cte &optional force)
+ (setq
+ result
+ (cond
+ ((equal type "multipart")
+ (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 (condition-case ()
+ (mail-header-parse-content-disposition cd)
+ (error nil)))
+ description))))
+ (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)
(when (or force
(not (equal "text/plain" (car ctl))))
- (let ((res (list (list (mm-copy-to-buffer) ctl cte nil))))
+ (let ((res (list (mm-copy-to-buffer) ctl cte nil cdl description)))
(push (car res) mm-dissection-list)
res)))
(defun mm-dissect-multipart (ctl)
(goto-char (point-min))
- (let ((boundary (concat "\n--" (drums-content-type-get ctl 'boundary)))
- start parts end)
- (while (search-forward boundary nil t)
- (forward-line -1)
+ (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)))))
+ (while (search-forward boundary end t)
+ (goto-char (match-beginning 0))
(when start
(save-excursion
(save-restriction
(narrow-to-region start (point))
- (setq parts (nconc (mm-dissect-buffer t) parts)))))
+ (setq parts (nconc (list (mm-dissect-buffer t)) parts)))))
(forward-line 2)
(setq start (point)))
+ (when start
+ (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 ()
(let ((obuf (current-buffer))
beg)
(goto-char (point-min))
- (search-forward "\n\n" nil t)
+ (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)
- "Display the MIME part represented by HANDLE."
+(defun mm-inlinable-part-p (type)
+ "Say whether TYPE can be displayed inline."
+ (eq (mm-user-method type) 'inline))
+
+(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 (nth 3 handle)
+ (if (mm-handle-displayed-p handle)
(mm-remove-part handle)
- (let* ((type (caadr handle))
+ (let* ((type (car (mm-handle-type handle)))
(method (mailcap-mime-info type))
(user-method (mm-user-method type)))
(if (eq user-method 'inline)
(progn
(forward-line 1)
(mm-display-inline handle))
- (mm-display-external handle (or user-method method)))))))
+ (when (or user-method
+ method
+ (not no-default))
+ (if (and (not user-method)
+ (not method)
+ (equal "text" (car (split-string type))))
+ (progn
+ (mm-insert-inline handle (mm-get-part handle))
+ 'inline)
+ (mm-display-external
+ handle (or user-method method
+ 'mailcap-save-binary-file))
+ 'external)))))))
(defun mm-display-external (handle method)
"Display HANDLE using METHOD."
(mm-with-unibyte-buffer
- (insert-buffer-substring (car handle))
- (mm-decode-content-transfer-encoding (nth 2 handle))
+ (insert-buffer-substring (mm-handle-buffer handle))
+ (mm-decode-content-transfer-encoding
+ (mm-handle-encoding handle) (car (mm-handle-type handle)))
(if (functionp method)
(let ((cur (current-buffer)))
- (switch-to-buffer (generate-new-buffer "*mm*"))
+ (if (eq method 'mailcap-save-binary-file)
+ (progn
+ (set-buffer (generate-new-buffer "*mm*"))
+ (setq method nil))
+ (let ((win (get-buffer-window cur t)))
+ (when win
+ (select-window win)))
+ (switch-to-buffer (generate-new-buffer "*mm*")))
+ (buffer-disable-undo)
+ (mm-set-buffer-file-coding-system mm-binary-coding-system)
(insert-buffer-substring cur)
- (funcall method)
- (setcar (nthcdr 3 handle) (current-buffer)))
- (let* ((file (make-temp-name (expand-file-name "emm." mm-tmp-directory)))
- process)
- (write-region (point-min) (point-max)
- file nil 'nomesg nil 'no-conversion)
- (setq process
- (start-process "*display*" nil shell-file-name
- "-c" (format method file)))
- (setcar (nthcdr 3 handle) (cons file process))
+ (message "Viewing with %s" method)
+ (let ((mm (current-buffer)))
+ (unwind-protect
+ (if method
+ (funcall method)
+ (mm-save-part handle))
+ (mm-handle-set-undisplayer handle mm))))
+ (let* ((dir (make-temp-name (expand-file-name "emm." mm-tmp-directory)))
+ (filename (mail-content-type-get
+ (mm-handle-disposition handle) 'filename))
+ (needsterm (assoc "needsterm"
+ (mailcap-mime-info
+ (car (mm-handle-type handle)) t)))
+ process file)
+ ;; We create a private sub-directory where we store our files.
+ (make-directory dir)
+ (set-file-modes dir 448)
+ (if filename
+ (setq file (expand-file-name (file-name-nondirectory filename)
+ dir))
+ (setq file (make-temp-name (expand-file-name "mm." dir))))
+ (write-region (point-min) (point-max) file nil 'nomesg)
+ (message "Viewing with %s" method)
+ (unwind-protect
+ (setq process
+ (if needsterm
+ (start-process "*display*" nil
+ "xterm"
+ "-e" shell-file-name "-c"
+ (format method
+ (mm-quote-arg file)))
+ (start-process "*display*" (generate-new-buffer "*mm*")
+ shell-file-name
+ "-c" (format method
+ (mm-quote-arg file)))))
+ (mm-handle-set-undisplayer handle (cons file process)))
(message "Displaying %s..." (format method file))))))
+(defun mm-remove-parts (handles)
+ "Remove the displayed MIME parts represented by HANDLE."
+ (if (and (listp handles)
+ (bufferp (car handles)))
+ (mm-remove-part handles)
+ (let (handle)
+ (while (setq handle (pop handles))
+ (cond
+ ((stringp handle)
+ )
+ ((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 HANDLE."
+ (if (and (listp handles)
+ (bufferp (car handles)))
+ (mm-destroy-part handles)
+ (let (handle)
+ (while (setq handle (pop handles))
+ (cond
+ ((stringp handle)
+ )
+ ((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."
- (let ((object (nth 3 handle)))
- (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)
+ (when (listp handle)
+ (let ((object (mm-handle-undisplayer handle)))
(condition-case ()
- (delete-file (car object))
+ (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)
+ (condition-case ()
+ (delete-file (car object))
+ (error nil))
+ (condition-case ()
+ (delete-directory (file-name-directory (car object)))
+ (error nil))
+ (condition-case ()
+ (kill-process (cdr object))
+ (error nil)))
+ ((bufferp object)
+ (when (buffer-live-p object)
+ (kill-buffer object))))
(error nil))
- (condition-case ()
- (kill-process (cdr object))
- (error nil)))
- ((bufferp object)
- (when (buffer-live-p object)
- (kill-buffer object))))
- (setcar (nthcdr 3 handle) nil)))
+ (mm-handle-set-undisplayer handle nil))))
(defun mm-display-inline (handle)
- (let* ((type (caadr handle))
+ (let* ((type (car (mm-handle-type handle)))
(function (cadr (assoc type mm-inline-media-tests))))
- (funcall function handle)))
-
+ (funcall function handle)
+ (goto-char (point-min))))
+
(defun mm-inlinable-p (type)
"Say whether TYPE can be displayed inline."
(let ((alist mm-inline-media-tests)
(let ((methods mm-user-automatic-display)
method result)
(while (setq method (pop methods))
- (when (string-match method type)
+ (when (and (string-match method type)
+ (mm-inlinable-p type))
(setq result t
methods nil)))
result))
(defun mm-destroy-part (handle)
"Destroy the data structures connected to HANDLE."
- (mm-remove-part handle)
- (when (buffer-live-p (car handle))
- (kill-buffer (car 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))
+
(defun mm-quote-arg (arg)
"Return a version of ARG that is safe to evaluate in a shell."
(let ((pos 0) new-pos accum)
;; *** bug: we don't handle newline characters properly
- (while (setq new-pos (string-match "[!`\"$\\& \t{}]" arg pos))
+ (while (setq new-pos (string-match "[;!`\"$\\& \t{} ]" arg pos))
(push (substring arg pos new-pos) accum)
(push "\\" accum)
(push (list (aref arg new-pos)) accum)
(apply 'concat (nconc (nreverse accum) (list (substring arg pos)))))))
;;;
-;;; Functions for displaying various formats inline
+;;; Functions for outputting parts
;;;
-(defun mm-inline-image (handle)
- (let ((type (cadr (split-string (caadr handle) "/")))
- image)
- (mm-with-unibyte-buffer
- (insert-buffer-substring (car handle))
- (mm-decode-content-transfer-encoding (nth 2 handle))
- (setq image (make-image-specifier
- (vector (intern type) :data (buffer-string)))))
- (let ((annot (make-annotation image nil 'text)))
- (set-extent-property annot 'mm t)
- (set-extent-property annot 'duplicable t)
- (setcar (nthcdr 3 handle) annot))))
-
-(defun mm-inline-text (handle)
- (let ((type (cadr (split-string (caadr handle) "/")))
- text buffer-read-only)
- (mm-with-unibyte-buffer
- (insert-buffer-substring (car handle))
- (mm-decode-content-transfer-encoding (nth 2 handle))
- (setq text (buffer-string)))
- (cond
- ((equal type "plain")
- (let ((b (point)))
- (insert text)
- (save-restriction
- (narrow-to-region b (point))
- (let ((charset (drums-content-type-get (nth 1 handle) 'charset)))
- (when charset
- (mm-decode-body charset nil)))
- (setcar
- (nthcdr 3 handle)
- `(lambda ()
- (let (buffer-read-only)
- (delete-region ,(set-marker (make-marker) (point-min))
- ,(set-marker (make-marker) (point-max)))))))))
- )))
-
-(defun mm-inline-audio (handle)
- (message "Not implemented"))
+(defun mm-get-part (handle)
+ "Return the contents of HANDLE as a string."
+ (mm-with-unibyte-buffer
+ (insert-buffer-substring (mm-handle-buffer handle))
+ (mm-decode-content-transfer-encoding
+ (mm-handle-encoding handle)
+ (car (mm-handle-type handle)))
+ (buffer-string)))
-;;;
-;;; Functions for outputting parts
-;;;
+(defvar mm-default-directory nil)
(defun mm-save-part (handle)
"Write HANDLE to a file."
- (let* ((name (drums-content-type-get (cadr handle) 'name))
- (file (read-file-name "Save MIME part to: "
- (expand-file-name
- (or name "") default-directory))))
+ (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))
(mm-with-unibyte-buffer
- (insert-buffer-substring (car handle))
- (mm-decode-content-transfer-encoding (nth 2 handle))
+ (insert-buffer-substring (mm-handle-buffer handle))
+ (mm-decode-content-transfer-encoding
+ (mm-handle-encoding handle)
+ (car (mm-handle-type handle)))
(when (or (not (file-exists-p file))
- (yes-or-no-p (format "File %s already exists; overwrite? ")))
- (write-region (point-min) (point-max) file)))))
+ (yes-or-no-p (format "File %s already exists; overwrite? "
+ file)))
+ ;; Now every coding system is 100% binary within mm-with-unibyte-buffer
+ ;; Is text still special?
+ (let ((coding-system-for-write
+ (if (equal "text" (car (split-string
+ (car (mm-handle-type handle)) "/")))
+ buffer-file-coding-system
+ 'binary)))
+ (write-region (point-min) (point-max) file))))))
(defun mm-pipe-part (handle)
"Pipe HANDLE to a process."
- (let* ((name (drums-content-type-get (cadr handle) 'name))
+ (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
- (insert-buffer-substring (car handle))
- (mm-decode-content-transfer-encoding (nth 2 handle))
+ (insert-buffer-substring (mm-handle-buffer handle))
+ (mm-decode-content-transfer-encoding
+ (mm-handle-encoding handle)
+ (car (mm-handle-type handle)))
(shell-command-on-region (point-min) (point-max) command nil))))
(defun mm-interactively-view-part (handle)
"Display HANDLE using METHOD."
- (let* ((type (caadr handle))
+ (let* ((type (car (mm-handle-type handle)))
(methods
- (mapcar (lambda (i) (list (cdr (assoc "viewer" i))))
+ (mapcar (lambda (i) (list (cdr (assoc 'viewer i))))
(mailcap-mime-info type 'all)))
(method (completing-read "Viewer: " methods)))
(mm-display-external (copy-sequence handle) method)))
+(defun mm-preferred-alternative (handles &optional preferred)
+ "Say which of HANDLES are preferred."
+ (let ((prec (if preferred (list preferred) mm-alternative-precedence))
+ p h result type handle)
+ (while (setq p (pop prec))
+ (setq h handles)
+ (while h
+ (setq type
+ (if (stringp (caar h))
+ (caar h)
+ (car (mm-handle-type (car h)))))
+ (setq handle (car h))
+ (when (and (equal p type)
+ (mm-automatic-display-p type)
+ (or (stringp (caar h))
+ (not (mm-handle-disposition (car h)))
+ (equal (car (mm-handle-disposition (car h)))
+ "inline")))
+ (setq result (car h)
+ h nil
+ prec nil))
+ (pop h)))
+ result))
+
+(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 (cadr (split-string (car (mm-handle-type handle)) "/"))))
+ (mm-with-unibyte-buffer
+ (insert-buffer-substring (mm-handle-buffer handle))
+ (mm-decode-content-transfer-encoding
+ (mm-handle-encoding handle)
+ (car (mm-handle-type handle)))
+ (make-image-specifier
+ (vector (intern type) :data (buffer-string))))))
+
+(defun mm-image-fit-p (handle)
+ "Say whether the image in HANDLE will fit the current window."
+ (let ((image (make-annotation (mm-get-image handle))))
+ (and (< (glyph-width (annotation-glyph image))
+ (window-pixel-width))
+ (< (glyph-height (annotation-glyph image))
+ (window-pixel-height)))))
+
+(defun url-cid (url)
+ (set-buffer (get-buffer-create url-working-buffer))
+ (let ((content-type nil)
+ (encoding nil)
+ (part nil)
+ (data nil))
+ (if (not (string-match "^cid:\\(.*\\)" url))
+ (message "Malformed CID URL: %s" url)
+ (setq url (url-unhex-string (match-string 1 url))
+ part (mm-get-content-id url))
+ (if (not part)
+ (message "Unknown CID encounterred: %s" url)
+ (setq data (buffer-string nil nil (mm-handle-buffer part))
+ content-type (mm-handle-type part)
+ encoding (symbol-name (mm-handle-encoding part)))
+ (if (= 0 (length content-type)) (setq content-type "text/plain"))
+ (if (= 0 (length encoding)) (setq encoding "8bit"))
+ (setq url-current-content-length (length data)
+ url-current-mime-type content-type
+ url-current-mime-encoding encoding
+ url-current-mime-headers (list (cons "content-type" content-type)
+ (cons "content-encoding" encoding)))
+ (and data (insert data))))))
+
(provide 'mm-decode)
;; mm-decode.el ends here
projects / elisp / gnus.git- / blobdiff