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|
;;; mh-identity.el --- Multiple Identify support for MH-E.
;; Copyright (C) 2002 Free Software Foundation, Inc.
;; Author: Peter S. Galbraith <psg@debian.org>
;; Maintainer: Bill Wohler <wohler@newt.com>
;; Keywords: mail
;; See: mh-e.el
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Commentary:
;; Multiple identity support for MH-E.
;;
;; Used to easily set different fields such as From and Organization, as
;; well as different signature files.
;;
;; Customize the variable `mh-identity-list' and an Identity menu will
;; appear in mh-letter-mode. The command 'mh-insert-identity can be used
;; from the command line.
;;; Change Log:
;; $Id: mh-identity.el,v 1.2 2003/02/03 20:55:30 wohler Exp $
;;; Code:
(require 'cl)
(eval-when (compile load eval)
(defvar mh-comp-loaded nil)
(unless mh-comp-loaded
(setq mh-comp-loaded t)
(require 'mh-comp))) ;Since we do this on sending
(autoload 'mml-insert-tag "mml")
;;;###mh-autoload
(defun mh-identity-make-menu ()
"Build (or rebuild) the Identity menu (e.g. after the list is modified)."
(when (and mh-identity-list (boundp 'mh-letter-mode-map))
(easy-menu-define mh-identity-menu mh-letter-mode-map
"mh-e identity menu"
(append
'("Identity")
;; Dynamically render :type corresponding to `mh-identity-list'
;; e.g.:
;; ["home" (mh-insert-identity "home")
;; :style radio :active (not (equal mh-identity-local "home"))
;; :selected (equal mh-identity-local "home")]
(mapcar (function
(lambda (arg)
`[,arg (mh-insert-identity ,arg) :style radio
:active (not (equal mh-identity-local ,arg))
:selected (equal mh-identity-local ,arg)]))
(mapcar 'car mh-identity-list))
'("--"
["none" (mh-insert-identity "none") mh-identity-local]
["Set Default for Session"
(setq mh-identity-default mh-identity-local) t]
["Save as Default"
(customize-save-variable
'mh-identity-default mh-identity-local) t]
)))))
;;;###mh-autoload
(defun mh-identity-list-set (symbol value)
"Update the `mh-identity-list' variable, and rebuild the menu.
Sets the default for SYMBOL (e.g. `mh-identity-list') to VALUE (as set in
customization). This is called after 'customize is used to alter
`mh-identity-list'."
(set-default symbol value)
(mh-identity-make-menu))
(defvar mh-identity-local nil
"Buffer-local variable holding the identity currently in use.")
(make-variable-buffer-local 'mh-identity-local)
(defun mh-header-field-delete (field value-only)
"Delete FIELD in the mail header, or only its value if VALUE-ONLY is t.
Return t if anything is deleted."
(when (mh-goto-header-field field)
(if (not value-only)
(beginning-of-line)
(forward-char))
(delete-region (point)
(progn (mh-header-field-end)
(if (not value-only) (forward-char 1))
(point)))
t))
(defvar mh-identity-signature-start nil
"Marker for the beginning of a signature inserted by `mh-insert-identity'.")
(defvar mh-identity-signature-end nil
"Marker for the end of a signature inserted by `mh-insert-identity'.")
;;;###mh-autoload
(defun mh-insert-identity (identity)
"Insert proper fields for given IDENTITY.
Edit the `mh-identity-list' variable to define identity."
(interactive
(list (completing-read
"Identity: "
(if mh-identity-local
(cons '("none")
(mapcar 'list (mapcar 'car mh-identity-list)))
(mapcar 'list (mapcar 'car mh-identity-list)))
nil t)))
(save-excursion
;;First remove old settings, if any.
(when mh-identity-local
(let ((pers-list (cadr (assoc mh-identity-local mh-identity-list))))
(while pers-list
(let ((field (concat (caar pers-list) ":")))
(cond
((string-equal "signature:" field)
(when (and (boundp 'mh-identity-signature-start)
(markerp mh-identity-signature-start))
(goto-char mh-identity-signature-start)
(forward-char -1)
(delete-region (point) mh-identity-signature-end)))
((mh-header-field-delete field nil))))
(setq pers-list (cdr pers-list)))))
;; Then insert the replacement
(when (not (equal "none" identity))
(let ((pers-list (cadr (assoc identity mh-identity-list))))
(while pers-list
(let ((field (concat (caar pers-list) ":"))
(value (cdar pers-list)))
(cond
;; No value, remove field
((or (not value)
(string= value ""))
(mh-header-field-delete field nil))
;; Existing field, replace
((mh-header-field-delete field t)
(insert value))
;; Handle "signature" special case. Insert file or call function.
((and (string-equal "signature:" field)
(or (and (stringp value)
(file-readable-p value))
(fboundp value)))
(goto-char (point-max))
(if (not (looking-at "^$"))
(insert "\n"))
(insert "\n")
(save-restriction
(narrow-to-region (point) (point))
(set (make-local-variable 'mh-identity-signature-start)
(make-marker))
(set-marker mh-identity-signature-start (point))
(cond
;; If MIME composition done, insert signature at the end as
;; an inline MIME part.
((and (boundp 'mh-mhn-compose-insert-flag)
mh-mhn-compose-insert-flag)
(insert "#\n" "Content-Description: Signature\n"))
((and (boundp 'mh-mml-compose-insert-flag)
mh-mml-compose-insert-flag)
(mml-insert-tag 'part 'type "text/plain"
'disposition "inline"
'description "Signature")))
(if (stringp value)
(insert-file-contents value)
(funcall value))
(goto-char (point-min))
(when (not (re-search-forward "^--" nil t))
(if (and (boundp 'mh-mhn-compose-insert-flag)
mh-mhn-compose-insert-flag)
(forward-line 2))
(if (and (boundp 'mh-mml-compose-insert-flag)
mh-mml-compose-insert-flag)
(forward-line 1))
(insert "-- \n"))
(set (make-local-variable 'mh-identity-signature-end)
(make-marker))
(set-marker mh-identity-signature-end (point-max))))
;; Handle "From" field differently, adding it at the beginning.
((string-equal "From:" field)
(goto-char (point-min))
(insert "From: " value "\n"))
;; Skip empty signature (Can't remove what we don't know)
((string-equal "signature:" field))
;; Other field, add at end
(t ;Otherwise, add the end.
(goto-char (point-min))
(mh-goto-header-end 0)
(mh-insert-fields field value))))
(setq pers-list (cdr pers-list))))))
;; Remember what is in use in this buffer
(if (equal "none" identity)
(setq mh-identity-local nil)
(setq mh-identity-local identity)))
(provide 'mh-identity)
;;; Local Variables:
;;; indent-tabs-mode: nil
;;; sentence-end-double-space: nil
;;; End:
;;; mh-identity.el ends here
|
