+;;;
+;;; Mode for inserting and editing MML forms
+;;;
+
+(defvar mml-mode-map
+ (let ((map (make-sparse-keymap))
+ (main (make-sparse-keymap)))
+ (define-key map "f" 'mml-attach-file)
+ (define-key map "b" 'mml-attach-buffer)
+ (define-key map "q" 'mml-quote-region)
+ (define-key map "m" 'mml-insert-multipart)
+ (define-key map "q" 'mml-insert-part)
+ (define-key map "v" 'mml-validate)
+ (define-key main "\M-m" map)
+ main))
+
+(easy-menu-define
+ mml-menu mml-mode-map ""
+ '("MML"
+ ("Attach"
+ ["File" mml-attach-file t]
+ ["Buffer" mml-attach-buffer t])
+ ("Insert"
+ ["Multipart" mml-insert-multipart t]
+ ["Part" mml-insert-part t])
+ ["Quote" mml-quote-region t]
+ ["Validate" mml-validate t]))
+
+(defvar mml-mode nil
+ "Minor mode for editing MML.")
+
+(defun mml-mode (&optional arg)
+ "Minor mode for editing MML.
+
+\\{mml-mode-map}"
+ (interactive "P")
+ (if (not (set (make-local-variable 'mml-mode)
+ (if (null arg) (not mml-mode)
+ (> (prefix-numeric-value arg) 0))))
+ nil
+ (set (make-local-variable 'mml-mode) t)
+ (unless (assq 'mml-mode minor-mode-alist)
+ (push `(mml-mode " MML") minor-mode-alist))
+ (unless (assq 'mml-mode minor-mode-map-alist)
+ (push (cons 'mml-mode mml-mode-map)
+ minor-mode-map-alist)))
+ (run-hooks 'mml-mode-hook))
+
+(defun mml-read-file (prompt)
+ (let ((file (read-file-name prompt nil nil t)))
+ ;; Prevent some common errors. This is inspired by similar code in
+ ;; VM.
+ (when (file-directory-p file)
+ (error "%s is a directory, cannot attach" file))
+ (unless (file-exists-p file)
+ (error "No such file: %s" file))
+ (unless (file-readable-p file)
+ (error "Permission denied: %s" file))
+ file))
+
+(defun mml-read-type (file)
+ (let* ((default (or (mm-default-file-encoding file)
+ ;; Perhaps here we should check what the file
+ ;; looks like, and offer text/plain if it looks
+ ;; like text/plain.
+ "application/octet-stream"))
+ (string (completing-read
+ (format "Content type (default %s): " default)
+ (delete-duplicates
+ (mapcar (lambda (m) (list (cdr m))) mailcap-mime-extensions)
+ :test 'equal))))
+ (if (not (equal string ""))
+ string
+ default)))
+
+(defun mml-read-description ()
+ (let ((description (read-string "One line description: ")))
+ (when (string-match "\\`[ \t]*\\'" description)
+ (setq description nil))
+ description))
+
+(defun mml-quote-region (beg end)
+ "Quote the MML tags in the region."
+ (interactive "r")
+ (save-excursion
+ (goto-char beg)
+ ;; Quote parts.
+ (while (re-search-forward
+ "<#/?!*\\(multipart\\|part\\|external\\)" end t)
+ (goto-char (match-beginning 1))
+ (insert "!"))))
+
+(defun mml-attach-file (file &optional type description)
+ "Attach a file to the outgoing MIME message.
+The file is not inserted or encoded until you send the message with
+`\\[message-send-and-exit]' or `\\[message-send]'.
+
+FILE is the name of the file to attach. TYPE is its content-type, a
+string of the form \"type/subtype\". DESCRIPTION is a one-line
+description of the attachment."
+ (interactive
+ (let* ((file (mml-read-file "Attach file: "))
+ (type (mml-read-type file))
+ (description (mml-read-description)))
+ (list file type description)))
+ (insert
+ (format
+ "<#part type=%s name=%s filename=%s%s disposition=attachment><#/part>\n"
+ type (prin1-to-string (file-name-nondirectory file))
+ (prin1-to-string file)
+ (if description
+ (format " description=%s" (prin1-to-string description))
+ ""))))
+
+(defun mml-attach-external (file &optional type description)
+ "Attach an external file into the buffer.
+FILE is an ange-ftp/efs specification of the part location.
+TYPE is the MIME type to use."
+ (interactive
+ (let* ((file (mml-read-file "Attach external file: "))
+ (type (mml-read-type file))
+ (description (mml-read-description)))
+ (list file type description)))
+ (insert (format
+ "<#external type=%s name=%s disposition=attachment><#/external>\n"
+ type (prin1-to-string file))))
+
+
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