git.notmuchmail.org Git - notmuch/blob - emacs/notmuch-address.el

   1 ;; notmuch-address.el --- address completion with notmuch
   2 ;;
   3 ;; Copyright © David Edmondson
   4 ;;
   5 ;; This file is part of Notmuch.
   6 ;;
   7 ;; Notmuch is free software: you can redistribute it and/or modify it
   8 ;; under the terms of the GNU General Public License as published by
   9 ;; the Free Software Foundation, either version 3 of the License, or
  10 ;; (at your option) any later version.
  11 ;;
  12 ;; Notmuch is distributed in the hope that it will be useful, but
  13 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
  14 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15 ;; General Public License for more details.
  16 ;;
  17 ;; You should have received a copy of the GNU General Public License
  18 ;; along with Notmuch.  If not, see <http://www.gnu.org/licenses/>.
  19 ;;
  20 ;; Authors: David Edmondson <dme@dme.org>
  21
  22 (require 'message)
  23
  24 ;;
  25
  26 (defcustom notmuch-address-command "notmuch-addresses"
  27   "The command which generates possible addresses. It must take a
  28 single argument and output a list of possible matches, one per
  29 line."
  30   :type 'string
  31   :group 'notmuch)
  32
  33 (defvar notmuch-address-message-alist-member
  34   '("^\\(Resent-\\)?\\(To\\|B?Cc\\|Reply-To\\|From\\|Mail-Followup-To\\|Mail-Copies-To\\):"
  35               . notmuch-address-expand-name))
  36
  37 (defvar notmuch-address-history nil)
  38
  39 (defun notmuch-address-message-insinuate ()
  40   (if (not (memq notmuch-address-message-alist-member message-completion-alist))
  41       (setq message-completion-alist
  42             (push notmuch-address-message-alist-member message-completion-alist))))
  43
  44 (defun notmuch-address-options (original)
  45   (process-lines notmuch-address-command original))
  46
  47 (defun notmuch-address-expand-name ()
  48   (let* ((end (point))
  49          (beg (save-excursion
  50                 (re-search-backward "\\(\\`\\|[\n:,]\\)[ \t]*")
  51                 (goto-char (match-end 0))
  52                 (point)))
  53          (orig (buffer-substring-no-properties beg end))
  54          (completion-ignore-case t)
  55          (options (notmuch-address-options orig))
  56          (num-options (length options))
  57          (chosen (if (eq num-options 1)
  58                      (car options)
  59                    (completing-read (format "Address (%s matches): " num-options)
  60                                     (cdr options) nil nil (car options)
  61                                     'notmuch-address-history))))
  62     (when chosen
  63       (push chosen notmuch-address-history)
  64       (delete-region beg end)
  65       (insert chosen))))
  66
  67 ;; Copied from `w3m-which-command'.
  68 (defun notmuch-address-locate-command (command)
  69   "Return non-nil if `command' is an executable either on
  70 `exec-path' or an absolute pathname."
  71   (when (stringp command)
  72     (if (and (file-name-absolute-p command)
  73              (file-executable-p command))
  74         command
  75       (setq command (file-name-nondirectory command))
  76       (catch 'found-command
  77         (let (bin)
  78           (dolist (dir exec-path)
  79             (setq bin (expand-file-name command dir))
  80             (when (or (and (file-executable-p bin)
  81                            (not (file-directory-p bin)))
  82                       (and (file-executable-p (setq bin (concat bin ".exe")))
  83                            (not (file-directory-p bin))))
  84               (throw 'found-command bin))))))))
  85
  86 ;; If we can find the program specified by `notmuch-address-command',
  87 ;; insinuate ourselves into `message-mode'.
  88 (when (notmuch-address-locate-command notmuch-address-command)
  89   (notmuch-address-message-insinuate))
  90
  91 ;;
  92
  93 (provide 'notmuch-address)