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- ;;; mh-mime --- mh-e support for composing MIME messages
- ;; Time-stamp: <94/03/08 08:41:27 gildea>
-
- ;; Copyright 1993 Free Software Foundation, Inc.
-
- ;; This file is part of mh-e.
-
- ;; mh-e 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.
-
- ;; mh-e 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 mh-e; see the file COPYING. If not, write to
- ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
-
- ;;; Commentary:
-
- ;;; Internal support for mh-e package.
- ;;; Support for generating an mhn composition file.
- ;;; MIME is supported only by MH 6.8 or later.
-
- ;;; Code:
-
- (provide 'mh-mime)
- (require 'mh-comp)
-
-
- ;; To do:
- ;; paragraph code should not fill # lines if MIME enabled.
- ;; implement mh-auto-edit-mhn (if non-nil, \\[mh-send-letter]
- ;; invokes mh-edit-mhn automatically before sending.)
- ;; actually, instead of mh-auto-edit-mhn,
- ;; should read automhnproc from profile
- ;; MIME option to mh-forward
- ;; command to move to content-description insertion point
-
- (defvar mh-mime-content-types
- '(("text/plain") ("text/richtext")
- ("multipart/mixed") ("multipart/alternative") ("multipart/digest")
- ("multipart/parallel")
- ("message/rfc822") ("message/partial") ("message/external-body")
- ("application/octet-stream") ("application/postscript")
- ("image/jpeg") ("image/gif")
- ("audio/basic")
- ("video/mpeg"))
- "Legal MIME content types.")
-
- (defun mh-mhn-compose-insertion (pathname type description)
- "Add a directive to insert a message part from a file.
- This is the typical way to insert non-text parts in a message.
- See also \\[mh-edit-mhn]."
- (interactive (list
- (read-file-name "Insert contents of: ")
- (completing-read "Content-type: "
- mh-mime-content-types nil nil nil)
- (read-string "Content-description: ")))
- (mh-mhn-compose-type pathname type description))
-
- (defun mh-mhn-compose-type (pathname type
- &optional description attributes comment)
- (beginning-of-line)
- (insert "#" type)
- (and attributes
- (insert "; " attributes))
- (and comment
- (insert " (" comment ")"))
- (insert " [")
- (and description
- (insert description))
- (insert "] " (expand-file-name pathname))
- (insert "\n"))
-
-
- (defun mh-mhn-compose-anon-ftp (host pathname type description)
- "Add a directive for an anonymous ftp external body part.
- This directive tells MH to include a reference to a message/external-body part
- retrievable by anonymous FTP. See also \\[mh-edit-mhn]."
- (interactive (list
- (read-string "Remote host: ")
- (read-string "Remote pathname: ")
- (completing-read "External Content-type: "
- mh-mime-content-types nil nil nil)
- (read-string "External Content-description: ")))
- (mh-mhn-compose-external-type "anon-ftp" host pathname
- type description))
-
- (defun mh-mhn-compose-external-compressed-tar (host pathname description)
- "Add a directive to include a reference to a compressed tar file.
- The file should be available via anonymous ftp.
- This directive tells MH to include a reference to a message/external-body part.
- See also \\[mh-edit-mhn]."
- (interactive (list
- (read-string "Remote host: ")
- (read-string "Remote pathname: ")
- (read-string "Tar file Content-description: ")))
- (mh-mhn-compose-external-type "anon-ftp" host pathname
- "application/octet-stream"
- description
- "type=tar; conversions=x-compress"
- "mode=image"))
-
-
- (defun mh-mhn-compose-external-type (access-type host pathname type
- &optional description
- attributes extra-params comment)
- (beginning-of-line)
- (insert "#@" type)
- (and attributes
- (insert "; " attributes))
- (and comment
- (insert " (" comment ") "))
- (insert " [")
- (and description
- (insert description))
- (insert "] ")
- (insert "access-type=" access-type "; ")
- (insert "site=" host)
- (insert "; name=" (file-name-nondirectory pathname))
- (insert "; directory=\"" (file-name-directory pathname) "\"")
- (and extra-params
- (insert "; " extra-params))
- (insert "\n"))
-
- (defun mh-mhn-compose-forw (&optional description msgs folder)
- "Add a forw directive to this message.
- This directive tells MH to include the named messages in this one.
- Arguments are DESCRIPTION, a line of text for the Content-description header,
- MESSAGES and FOLDER, which name the message(s) to be forwarded.
- See also \\[mh-edit-mhn]."
- (interactive (list
- (read-string "Forw Content-description: ")
- (read-string (format "Messages%s: "
- (if mh-sent-from-msg
- (format " [%d]" mh-sent-from-msg)
- "")))
- (mh-prompt-for-folder "Message from" mh-sent-from-folder nil)))
- (beginning-of-line)
- (insert "#forw [")
- (and description
- (not (string= description ""))
- (insert description))
- (insert "]")
- (and folder
- (not (string= folder ""))
- (insert " " folder))
- (if (and msgs
- (not (string= msgs "")))
- (let ((start (point)))
- (insert " " msgs)
- (subst-char-in-region start (point) ?, ? ))
- (if mh-sent-from-msg
- (insert " " (int-to-string mh-sent-from-msg))))
- (insert "\n"))
-
- (defun mh-edit-mhn ()
- "Filter the current draft through the mhn program for MIME formatting.
- Using directives already inserted in the draft, fills in
- all the MIME components and header fields.
- This step should be done last just before sending the message.
- The mhn program is part of MH version 6.8 or later.
- The `\\[mh-revert-mhn-edit]' command undoes this command.
- For assistance with creating MIME directives to insert
- various types of components in a message, see
- \\[mh-mhn-compose-insertion] (generic insertion from a file),
- \\[mh-mhn-compose-anon-ftp] (external reference to file via anonymous ftp),
- \\[mh-mhn-compose-external-compressed-tar] \
- \(reference to compressed tar file via anonymous ftp), and
- \\[mh-mhn-compose-forw] (forward message)."
- (interactive "*")
- (save-buffer)
- (message "mhn editing...")
- (mh-exec-cmd-error (format "mhdraft=%s" (buffer-file-name))
- "mhn" (buffer-file-name))
- (revert-buffer t t)
- (message "mhn editing...done"))
-
-
- (defun mh-revert-mhn-edit (noconfirm)
- "Undoes the effect of \\[mh-edit-mhn] by reverting to the backup file.
- Argument (optional) non-nil means don't ask for confirmation."
- (interactive "*P")
- (if (null buffer-file-name)
- (error "Buffer does not seem to be associated with any file"))
- (let ((backup-strings '("," "#"))
- backup-file)
- (while (and backup-strings
- (not (file-exists-p
- (setq backup-file
- (concat (file-name-directory buffer-file-name)
- (car backup-strings)
- (file-name-nondirectory buffer-file-name)
- ".orig")))))
- (setq backup-strings (cdr backup-strings)))
- (or backup-strings
- (error "mhn backup file for %s no longer exists!" buffer-file-name))
- (or noconfirm
- (yes-or-no-p (format "Revert buffer from file %s? "
- backup-file))
- (error "mhn edit revert not confirmed."))
- (let ((buffer-read-only nil))
- (erase-buffer)
- (insert-file-contents backup-file))
- (after-find-file nil)))
-