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| | ;;; eudcb-mailabbrev.el --- EUDC - mailabbrev backend -*- lexical-binding: t -*-
;; Copyright (C) 2022 condition-alpha.com
;; This program 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 3 of the License, or
;; (at your option) any later version.
;;
;; This program 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 this program. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; This library provides an interface to the mailabbrev package as
;; an EUDC data source.
;;; Usage:
;; To load the library, first `require' it:
;;
;; (require 'eudcb-mailabbrev)
;;
;; In the simplest case then just use:
;;
;; (eudc-mailabbrev-set-server "localhost")
;;
;; When using `eudc-server-hotlist', instead use:
;;
;; (add-to-list 'eudc-server-hotlist '("localhost" . mailabbrev))
;;; Code:
(require 'eudc)
(require 'mailabbrev)
(require 'mail-parse)
;; hook ourselves into the EUDC framework
(eudc-protocol-set 'eudc-query-function
'eudc-mailabbrev-query-internal
'mailabbrev)
(eudc-protocol-set 'eudc-list-attributes-function
nil
'mailabbrev)
(eudc-protocol-set 'eudc-protocol-attributes-translation-alist
nil
'mailabbrev)
(eudc-protocol-set 'eudc-protocol-has-default-query-attributes
nil
'mailabbrev)
(defun eudc-mailabbrev-query-internal (query &optional _return-attrs)
"Query `mailabbrev' with QUERY.
QUERY is a list of cons cells (ATTR . VALUE). Since `mailabbrev'
does not provide attributes in the usual sense, the
back-end-specific attribute names in
`eudc-mailabbrev-attributes-translation-alist' are used as the
KEY (that is, the \"type\" of match) when looking for matches in
`mailabbrev-database'.
RETURN-ATTRS is a list of attributes to return, defaulting to
`eudc-default-return-attributes'."
(mail-abbrevs-setup)
(let (result)
(dolist (term query)
(let* ((attr (car term))
(value (cdr term))
(match (symbol-value (intern-soft value mail-abbrevs))))
(when (and match
(memq attr '(email firstname name)))
;; try to decompose email construct
(let* ((decoded (mail-header-parse-address match t))
(name (cdr decoded))
(email (car decoded)))
(if decoded
;; decoding worked, push individual fields
(push `((email . ,email)
,@(when name (list (cons 'name name))))
result)
;; else, just forward the value as-is
(push (list (cons 'email match)) result))))))
result))
(defun eudc-mailabbrev-set-server (dummy)
"Set the EUDC server to `mailabbrev'.
The server in DUMMY is not actually used, since this backend
always and implicitly uses the mailabbrev package in the current
Emacs instance running on the local host."
(interactive)
(eudc-set-server dummy 'mailabbrev)
(message "[eudc] mailabbrev server selected"))
(eudc-register-protocol 'mailabbrev)
(provide 'eudcb-mailabbrev)
;;; eudcb-mailabbrev.el ends here
|