lisp/ol-eshell.el

   1 ;;; ol-eshell.el - Links to Working Directories in Eshell -*- lexical-binding: t; -*-
   2
   3 ;; Copyright (C) 2011-2019 Free Software Foundation, Inc.
   4
   5 ;; Author: Konrad Hinsen <konrad.hinsen AT fastmail.net>
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <https://www.gnu.org/licenses/>.
  21
  22 ;;; Commentary:
  23
  24 ;;; Code:
  25
  26 (require 'eshell)
  27 (require 'esh-mode)
  28 (require 'ol)
  29
  30 (org-link-set-parameters "eshell"
  31                          :follow #'org-eshell-open
  32                          :store #'org-eshell-store-link)
  33
  34 (defun org-eshell-open (link)
  35   "Switch to an eshell buffer and execute a command line.
  36    The link can be just a command line (executed in the default
  37    eshell buffer) or a command line prefixed by a buffer name
  38    followed by a colon."
  39   (let* ((buffer-and-command
  40           (if (string-match "\\([A-Za-z0-9+*-]+\\):\\(.*\\)" link)
  41               (list (match-string 1 link)
  42                     (match-string 2 link))
  43             (list eshell-buffer-name link)))
  44          (eshell-buffer-name (car buffer-and-command))
  45          (command (cadr buffer-and-command)))
  46     (if (get-buffer eshell-buffer-name)
  47         (pop-to-buffer-same-window eshell-buffer-name)
  48       (eshell))
  49     (goto-char (point-max))
  50     (eshell-kill-input)
  51     (insert command)
  52     (eshell-send-input)))
  53
  54 (defun org-eshell-store-link ()
  55   "Store a link that, when opened, switches back to the current eshell buffer
  56    and the current working directory."
  57   (when (eq major-mode 'eshell-mode)
  58     (let* ((command (concat "cd " dired-directory))
  59            (link  (concat (buffer-name) ":" command)))
  60       (org-link-store-props
  61        :link (concat "eshell:" link)
  62        :description command))))
  63
  64 (provide 'ol-eshell)
  65
  66 ;;; ol-eshell.el ends here