;;; mml.el --- A package for parsing and validating MML documents
-;; Copyright (C) 1998,99 Free Software Foundation, Inc.
+;; Copyright (C) 1998, 1999, 2000 Free Software Foundation, Inc.
;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
;; This file is part of GNU Emacs.
(eval-and-compile
(autoload 'message-make-message-id "message"))
+(defvar mml-generate-multipart-alist nil
+ "*Alist of multipart generation functions.
+Each entry has the form (NAME . FUNCTION), where
+NAME is a string containing the name of the part (without the
+leading \"/multipart/\"),
+FUNCTION is a Lisp function which is called to generate the part.
+
+The Lisp function has to supply the appropriate MIME headers and the
+contents of this part.")
+
(defvar mml-syntax-table
(let ((table (copy-syntax-table emacs-lisp-mode-syntax-table)))
(modify-syntax-entry ?\\ "/" table)
(modify-syntax-entry ?\' " " table)
table))
+(defvar mml-boundary-function 'mml-make-boundary
+ "A function called to suggest a boundary.
+The function may be called several times, and should try to make a new
+suggestion each time. The function is called with one parameter,
+which is a number that says how many times the function has been
+called for this message.")
+
+(defvar mml-confirmation-set nil
+ "A list of symbols, each of which disables some warning.
+`unknown-encoding': always send messages contain characters with
+unknown encoding; `use-ascii': always use ASCII for those characters
+with unknown encoding; `multipart': always send messages with more than
+one charsets.")
+
(defun mml-parse ()
"Parse the current buffer as an MML document."
(goto-char (point-min))
(defun mml-parse-1 ()
"Parse the current buffer as an MML document."
- (let (struct tag point contents charsets warn)
+ (let (struct tag point contents charsets warn use-ascii)
(while (and (not (eobp))
(not (looking-at "<#/multipart")))
(cond
(setq point (point)
contents (mml-read-part)
charsets (mm-find-mime-charset-region point (point)))
+ (when (memq nil charsets)
+ (if (or (memq 'unknown-encoding mml-confirmation-set)
+ (y-or-n-p
+ "Warning: You message contains characters with unknown encoding. Really send?"))
+ (if (setq use-ascii
+ (or (memq 'use-ascii mml-confirmation-set)
+ (y-or-n-p "Use ASCII as charset?")))
+ (setq charsets (delq nil charsets))
+ (setq warn nil))
+ (error "Edit your message to remove those characters")))
(if (< (length charsets) 2)
(push (nconc tag (list (cons 'contents contents)))
struct)
(let ((nstruct (mml-parse-singlepart-with-multiple-charsets
- tag point (point))))
+ tag point (point) use-ascii)))
(when (and warn
+ (not (memq 'multipart mml-confirmation-set))
(not
(y-or-n-p
(format
(forward-line 1))
(nreverse struct)))
-(defun mml-parse-singlepart-with-multiple-charsets (orig-tag beg end)
+(defun mml-parse-singlepart-with-multiple-charsets
+ (orig-tag beg end &optional use-ascii)
(save-excursion
(narrow-to-region beg end)
(goto-char (point-min))
- (let ((current (mm-mime-charset (char-charset (following-char))))
+ (let ((current (or (mm-mime-charset (mm-charset-after))
+ (and use-ascii 'us-ascii)))
charset struct space newline paragraph)
(while (not (eobp))
(cond
;; The charset remains the same.
- ((or (eq (setq charset (mm-mime-charset
- (char-charset (following-char)))) 'us-ascii)
+ ((or (eq (setq charset (mm-mime-charset (mm-charset-after)))
+ 'us-ascii)
+ (and use-ascii (not charset))
(eq charset current)))
;; The initial charset was ascii.
((eq current 'us-ascii)
((eq (car cont) 'part)
(let (coded encoding charset filename type)
(setq type (or (cdr (assq 'type cont)) "text/plain"))
- (if (equal (car (split-string type "/")) "text")
+ (if (member (car (split-string type "/")) '("text" "message"))
(with-temp-buffer
(cond
((cdr (assq 'buffer cont))
(insert-buffer-substring (cdr (assq 'buffer cont))))
- ((setq filename (cdr (assq 'filename cont)))
- (insert-file-contents filename))
+ ((and (setq filename (cdr (assq 'filename cont)))
+ (not (equal (cdr (assq 'nofile cont)) "yes")))
+ (mm-insert-file-contents filename))
(t
(save-restriction
(narrow-to-region (point) (point))
"<#!+/?\\(part\\|multipart\\|external\\)" nil t)
(delete-region (+ (match-beginning 0) 2)
(+ (match-beginning 0) 3))))))
+ (when (string= (car (split-string type "/")) "message")
+ ;; message/rfc822 parts have to have their heads encoded.
+ (save-restriction
+ (message-narrow-to-head)
+ (let ((rfc2047-header-encoding-alist nil))
+ (mail-encode-encoded-word-buffer))))
(setq charset (mm-encode-body))
- (setq encoding (mm-body-encoding charset))
+ (setq encoding (mm-body-encoding
+ charset
+ (if (string= (car (split-string type "/"))
+ "message")
+ '8bit
+ (cdr (assq 'encoding cont)))))
(setq coded (buffer-string)))
(mm-with-unibyte-buffer
(cond
((cdr (assq 'buffer cont))
(insert-buffer-substring (cdr (assq 'buffer cont))))
- ((setq filename (cdr (assq 'filename cont)))
- (insert-file-contents filename))
+ ((and (setq filename (cdr (assq 'filename cont)))
+ (not (equal (cdr (assq 'nofile cont)) "yes")))
+ (let ((coding-system-for-read mm-binary-coding-system))
+ (mm-insert-file-contents filename nil nil nil nil t)))
(t
(insert (cdr (assq 'contents cont)))))
(setq encoding (mm-encode-buffer type)
(insert (or (cdr (assq 'contents cont))))
(insert "\n"))
((eq (car cont) 'multipart)
- (let ((mml-boundary (mml-compute-boundary cont)))
- (insert (format "Content-Type: multipart/%s; boundary=\"%s\"\n"
- (or (cdr (assq 'type cont)) "mixed")
- mml-boundary))
- (insert "\n")
- (setq cont (cddr cont))
- (while cont
- (insert "\n--" mml-boundary "\n")
- (mml-generate-mime-1 (pop cont)))
- (insert "\n--" mml-boundary "--\n")))
+ (let* ((type (or (cdr (assq 'type cont)) "mixed"))
+ (handler (assoc type mml-generate-multipart-alist)))
+ (if handler
+ (funcall (cdr handler) cont)
+ ;; No specific handler. Use default one.
+ (let ((mml-boundary (mml-compute-boundary cont)))
+ (insert (format "Content-Type: multipart/%s; boundary=\"%s\"\n"
+ type mml-boundary))
+ (setq cont (cddr cont))
+ (while cont
+ (insert "\n--" mml-boundary "\n")
+ (mml-generate-mime-1 (pop cont)))
+ (insert "\n--" mml-boundary "--\n")))))
(t
(error "Invalid element: %S" cont))))
(defun mml-compute-boundary (cont)
"Return a unique boundary that does not exist in CONT."
- (let ((mml-boundary (mml-make-boundary)))
+ (let ((mml-boundary (funcall mml-boundary-function
+ (incf mml-multipart-number))))
;; This function tries again and again until it has found
;; a unique boundary.
(while (not (catch 'not-unique
(cond
((cdr (assq 'buffer cont))
(insert-buffer-substring (cdr (assq 'buffer cont))))
- ((setq filename (cdr (assq 'filename cont)))
- (insert-file-contents filename))
+ ((and (setq filename (cdr (assq 'filename cont)))
+ (not (equal (cdr (assq 'nofile cont)) "yes")))
+ (mm-insert-file-contents filename))
(t
(insert (cdr (assq 'contents cont)))))
(goto-char (point-min))
(when (re-search-forward (concat "^--" (regexp-quote mml-boundary))
nil t)
- (setq mml-boundary (mml-make-boundary))
+ (setq mml-boundary (funcall mml-boundary-function
+ (incf mml-multipart-number)))
(throw 'not-unique nil))))
((eq (car cont) 'multipart)
(mapcar 'mml-compute-boundary-1 (cddr cont))))
t))
-(defun mml-make-boundary ()
- (concat (make-string (% (incf mml-multipart-number) 60) ?=)
- (if (> mml-multipart-number 17)
- (format "%x" mml-multipart-number)
+(defun mml-make-boundary (number)
+ (concat (make-string (% number 60) ?=)
+ (if (> number 17)
+ (format "%x" number)
"")
mml-base-boundary))
"Translate the current buffer from MML to MIME."
(message-encode-message-body)
(save-restriction
- (message-narrow-to-headers)
+ (message-narrow-to-headers-or-head)
(mail-encode-encoded-word-buffer)))
(defun mml-insert-mime (handle &optional no-markup)
(let (textp buffer)
;; Determine type and stuff.
(unless (stringp (car handle))
- (unless (setq textp (equal
- (car (split-string
- (car (mm-handle-type handle)) "/"))
- "text"))
+ (unless (setq textp (equal (mm-handle-media-supertype handle)
+ "text"))
(save-excursion
(set-buffer (setq buffer (generate-new-buffer " *mml*")))
(mm-insert-part handle))))
(unless no-markup
- (mml-insert-mml-markup handle buffer))
+ (mml-insert-mml-markup handle buffer textp))
(cond
((stringp (car handle))
(mapcar 'mml-insert-mime (cdr handle))
(insert "<#/multipart>\n"))
(textp
- (mm-insert-part handle)
+ (let ((text (mm-get-part handle))
+ (charset (mail-content-type-get
+ (mm-handle-type handle) 'charset)))
+ (insert (mm-decode-string text charset)))
(goto-char (point-max)))
(t
(insert "<#/part>\n")))))
-(defun mml-insert-mml-markup (handle &optional buffer)
+(defun mml-insert-mml-markup (handle &optional buffer nofile)
"Take a MIME handle and insert an MML tag."
(if (stringp (car handle))
- (insert "<#multipart type=" (cadr (split-string (car handle) "/"))
+ (insert "<#multipart type=" (mm-handle-media-subtype handle)
">\n")
- (insert "<#part type=" (car (mm-handle-type handle)))
+ (insert "<#part type=" (mm-handle-media-type handle))
(dolist (elem (append (cdr (mm-handle-type handle))
(cdr (mm-handle-disposition handle))))
(insert " " (symbol-name (car elem)) "=\"" (cdr elem) "\""))
(insert " disposition=" (car (mm-handle-disposition handle))))
(when buffer
(insert " buffer=\"" (buffer-name buffer) "\""))
+ (when nofile
+ (insert " nofile=yes"))
(when (mm-handle-description handle)
(insert " description=\"" (mm-handle-description handle) "\""))
- (equal (split-string (car (mm-handle-type handle)) "/") "text")
(insert ">\n")))
(defun mml-insert-parameter (&rest parameters)
(define-key map "p" 'mml-insert-part)
(define-key map "v" 'mml-validate)
(define-key map "P" 'mml-preview)
+ (define-key map "n" 'mml-narrow-to-part)
(define-key main "\M-m" map)
main))
("Insert"
["Multipart" mml-insert-multipart t]
["Part" mml-insert-part t])
+ ["Narrow" mml-narrow-to-part t]
["Quote" mml-quote-region t]
- ["Validate" mml-validate t]))
+ ["Validate" mml-validate t]
+ ["Preview" mml-preview t]))
(defvar mml-mode nil
"Minor mode for editing MML.")
(format "Content type (default %s): " default)
(mapcar
'list
- (delete-duplicates
+ (mm-delete-duplicates
(nconc
(mapcar (lambda (m) (cdr m))
mailcap-mime-extensions)
nil
type)))
(cdr l))))
- mailcap-mime-data)))
- :test 'equal)))))
+ mailcap-mime-data))))))))
(if (not (equal string ""))
string
default)))
;; Quote parts.
(while (re-search-forward
"<#/?!*\\(multipart\\|part\\|external\\)" nil t)
- (goto-char (match-beginning 1))
+ ;; Insert ! after the #.
+ (goto-char (+ (match-beginning 0) 2))
(insert "!")))))
(defun mml-insert-tag (name &rest plist)
(when (string-match "[\"\\~/* \t\n]" value)
(setq value (prin1-to-string value)))
(insert (format " %s=%s" key value)))))
- (insert ">\n<#/" name ">\n"))
+ (insert ">\n"))
+
+(defun mml-insert-empty-tag (name &rest plist)
+ "Insert an empty MML tag described by NAME and PLIST."
+ (when (symbolp name)
+ (setq name (symbol-name name)))
+ (apply #'mml-insert-tag name plist)
+ (insert "<#/" name ">\n"))
;;; Attachment functions.
(type (mml-minibuffer-read-type file))
(description (mml-minibuffer-read-description)))
(list file type description)))
- (mml-insert-tag 'part 'type type 'filename file 'disposition "attachment"
- 'description description))
+ (mml-insert-empty-tag 'part 'type type 'filename file
+ 'disposition "attachment" 'description description))
(defun mml-attach-buffer (buffer &optional type description)
"Attach a buffer to the outgoing MIME message.
(type (mml-minibuffer-read-type buffer "text/plain"))
(description (mml-minibuffer-read-description)))
(list buffer type description)))
- (mml-insert-tag 'part 'type type 'buffer buffer 'disposition "attachment"
- 'description description))
+ (mml-insert-empty-tag 'part 'type type 'buffer buffer
+ 'disposition "attachment" 'description description))
(defun mml-attach-external (file &optional type description)
"Attach an external file into the buffer.
(type (mml-minibuffer-read-type file))
(description (mml-minibuffer-read-description)))
(list file type description)))
- (mml-insert-tag 'external 'type type 'name file 'disposition "attachment"
- 'description description))
+ (mml-insert-empty-tag 'external 'type type 'name file
+ 'disposition "attachment" 'description description))
(defun mml-insert-multipart (&optional type)
(interactive (list (completing-read "Multipart type (default mixed): "
- '(("mixed") ("alternative") ("digest") ("parallel")
- ("signed") ("encrypted"))
- nil nil "mixed")))
+ '(("mixed") ("alternative") ("digest") ("parallel")
+ ("signed") ("encrypted"))
+ nil nil "mixed")))
(or type
(setq type "mixed"))
- (mml-insert-tag "multipart" 'type type)
+ (mml-insert-empty-tag "multipart" 'type type)
+ (forward-line -1))
+
+(defun mml-insert-part (&optional type)
+ (interactive
+ (list (mml-minibuffer-read-type "")))
+ (mml-insert-tag 'part 'type type 'disposition "inline")
(forward-line -1))
(defun mml-preview (&optional raw)
- "Display current buffer with Gnus, in a new buffer.
+ "Display current buffer with Gnus, in a new buffer.
If RAW, don't highlight the article."
- (interactive "P")
- (let ((buf (current-buffer)))
- (switch-to-buffer (get-buffer-create
- (concat (if raw "*Raw MIME preview of "
- "*MIME preview of ") (buffer-name))))
- (erase-buffer)
- (insert-buffer buf)
- (mml-to-mime)
- (unless raw
- (run-hooks 'gnus-article-decode-hook)
- (let ((gnus-newsgroup-name "dummy"))
- (gnus-article-prepare-display)))
- (fundamental-mode)
- (setq buffer-read-only t)
- (goto-char (point-min))))
-
+ (interactive "P")
+ (let ((buf (current-buffer)))
+ (switch-to-buffer (get-buffer-create
+ (concat (if raw "*Raw MIME preview of "
+ "*MIME preview of ") (buffer-name))))
+ (erase-buffer)
+ (insert-buffer buf)
+ (if (re-search-forward
+ (concat "^" (regexp-quote mail-header-separator) "\n") nil t)
+ (replace-match "\n"))
+ (mml-to-mime)
+ (unless raw
+ (run-hooks 'gnus-article-decode-hook)
+ (let ((gnus-newsgroup-name "dummy"))
+ (gnus-article-prepare-display)))
+ (fundamental-mode)
+ (setq buffer-read-only t)
+ (goto-char (point-min))))
+
+(defun mml-validate ()
+ "Validate the current MML document."
+ (interactive)
+ (mml-parse))
+
(provide 'mml)
;;; mml.el ends here
projects / elisp / gnus.git- / blobdiff