;;; mh-identity.el --- Multiple identify support for MH-E. ;; Copyright (C) 2002, 2003, 2004 Free Software Foundation, Inc. ;; Author: Peter S. Galbraith ;; Maintainer: Bill Wohler ;; 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: ;;; Code: (eval-when-compile (require 'mh-acros)) (mh-require-cl) (require 'mh-comp) (autoload 'mml-insert-tag "mml") (defvar mh-identity-pgg-default-user-id nil "Holds the GPG key ID to be used by pgg.el. This is normally set as part of an Identity in `mh-identity-list'.") (make-variable-buffer-local 'mh-identity-pgg-default-user-id) ;;;###mh-autoload (defun mh-identity-make-menu () "Build the Identity menu. This should be called any time `mh-identity-list' or `mh-auto-fields-list' change." (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")] '(["Insert Auto Fields" (mh-insert-auto-fields) mh-auto-fields-list] "--") (mapcar (function (lambda (arg) `[,arg (mh-insert-identity ,arg) :style radio :selected (equal mh-identity-local ,arg)])) (mapcar 'car mh-identity-list)) '(["None" (mh-insert-identity "None") :style radio :selected (not 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] ["Customize Identities" (customize-variable 'mh-identity-list) 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." (let ((field-colon (if (string-match "^.*:$" field) field (concat field ":")))) (when (mh-goto-header-field field-colon) (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'.") (defun mh-identity-field-handler (field) "Return the handler for a FIELD or nil if none set. The field name is downcased. If the FIELD begins with the character `:', then it must have a special handler defined in `mh-identity-handlers', else return an error since it is not a legal message header." (or (cdr (assoc (downcase field) mh-identity-handlers)) (and (eq (aref field 0) ?:) (error (format "Field %s - unknown mh-identity-handler" field))) (cdr (assoc ":default" mh-identity-handlers)) 'mh-identity-handler-default)) ;;;###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 (caar pers-list)) (handler (mh-identity-field-handler field))) (funcall handler field 'remove)) (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 (caar pers-list)) (value (cdar pers-list)) (handler (mh-identity-field-handler field))) (funcall handler field 'add 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))) ;;;###mh-autoload (defun mh-identity-handler-gpg-identity (field action &optional value) "For FIELD \"pgg-default-user-id\", process for ACTION 'remove or 'add. The buffer-local variable `mh-identity-pgg-default-user-id' is set to VALUE when action 'add is selected." (cond ((or (equal action 'remove) (not value) (string= value "")) (setq mh-identity-pgg-default-user-id nil)) ((equal action 'add) (setq mh-identity-pgg-default-user-id value)))) ;;;###mh-autoload (defun mh-identity-handler-signature (field action &optional value) "For FIELD \"signature\", process headers for ACTION 'remove or 'add. The VALUE is added." (cond ((equal action 'remove) (when (and (markerp mh-identity-signature-start) (markerp mh-identity-signature-end)) (delete-region mh-identity-signature-start mh-identity-signature-end))) (t ;; Insert "signature". Nil value means to use `mh-signature-file-name'. (when (not (mh-signature-separator-p)) ;...unless already present (goto-char (point-max)) (save-restriction (narrow-to-region (point) (point)) (if (null value) (mh-insert-signature) (mh-insert-signature value)) (set (make-local-variable 'mh-identity-signature-start) (point-min-marker)) (set-marker-insertion-type mh-identity-signature-start t) (set (make-local-variable 'mh-identity-signature-end) (point-max-marker))))))) (defvar mh-identity-attribution-verb-start nil "Marker for the beginning of the attribution verb.") (defvar mh-identity-attribution-verb-end nil "Marker for the end of the attribution verb.") ;;;###mh-autoload (defun mh-identity-handler-attribution-verb (field action &optional value) "For FIELD \"attribution_verb\", process headers for ACTION 'remove or 'add. The VALUE is added." (when (and (markerp mh-identity-attribution-verb-start) (markerp mh-identity-attribution-verb-end)) (delete-region mh-identity-attribution-verb-start mh-identity-attribution-verb-end) (goto-char mh-identity-attribution-verb-start) (cond ((equal action 'remove) ; Replace with default (mh-identity-insert-attribution-verb nil)) (t ; Insert attribution verb. (mh-identity-insert-attribution-verb value))))) ;;;###mh-autoload (defun mh-identity-insert-attribution-verb (value) "Insert VALUE as attribution verb, setting up delimiting markers. If VALUE is nil, use `mh-extract-from-attribution-verb'." (save-restriction (narrow-to-region (point) (point)) (if (null value) (insert mh-extract-from-attribution-verb) (insert value)) (set (make-local-variable 'mh-identity-attribution-verb-start) (point-min-marker)) (set-marker-insertion-type mh-identity-attribution-verb-start t) (set (make-local-variable 'mh-identity-attribution-verb-end) (point-max-marker)))) (defun mh-identity-handler-default (field action top &optional value) "For FIELD, process mh-identity headers for ACTION 'remove or 'add. if TOP is non-nil, add the field and it's VALUE at the top of the header, else add it at the bottom of the header." (let ((field-colon (if (string-match "^.*:$" field) field (concat field ":")))) (cond ((equal action 'remove) (mh-header-field-delete field-colon nil)) (t (cond ;; No value, remove field ((or (not value) (string= value "")) (mh-header-field-delete field-colon nil)) ;; Existing field, replace ((mh-header-field-delete field-colon t) (insert value)) ;; Other field, add at end or top (t (goto-char (point-min)) (if (not top) (mh-goto-header-end 0)) (insert field-colon " " value "\n"))))))) ;;;###mh-autoload (defun mh-identity-handler-top (field action &optional value) "For FIELD, process mh-identity headers for ACTION 'remove or 'add. If the field wasn't present, the VALUE is added at the top of the header." (mh-identity-handler-default field action t value)) ;;;###mh-autoload (defun mh-identity-handler-bottom (field action &optional value) "For FIELD, process mh-identity headers for ACTION 'remove or 'add. If the field wasn't present, the VALUE is added at the bottom of the header." (mh-identity-handler-default field action nil value)) (provide 'mh-identity) ;;; Local Variables: ;;; indent-tabs-mode: nil ;;; sentence-end-double-space: nil ;;; End: ;;; arch-tag: 07d66ef6-8726-4ac6-9ecf-e566cd5bfb45 ;;; mh-identity.el ends here