146 lines
4.4 KiB
EmacsLisp
Executable File
146 lines
4.4 KiB
EmacsLisp
Executable File
;;; stupid-indent-mode.el --- Plain stupid indentation minor mode
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;; Copyright (C) 2013 Mihai Bazon
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;; Author: Mihai Bazon <mihai.bazon@gmail.com>
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;; Keywords:
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;; This program is free software; you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; This program is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with this program. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Dumb indentation mode is appropriate for editing buffers that Emacs
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;; does not fully understand syntactically, such as HTML/PHP
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;; (typically involving multiple languages with different indentation
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;; rules in the same buffer). The default indentation level is 2
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;; (customize `stupid-indent-level').
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;;
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;; Key bindings:
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;;
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;; TAB -- indent current line by the value of `stupid-indent-level'
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;; S-TAB -- outdent current line
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;; C-c TAB -- indent region
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;; C-c S-TAB -- outdent region
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;; RET -- newline and indent
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;; C-c C-TAB -- indent according to mode
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;;; Code:
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(defcustom stupid-indent-level 2
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"Indentation level for stupid-indent-mode")
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(defun %stupid-force-indent-line ()
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(let (col)
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(save-excursion
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(back-to-indentation)
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(setq col (+ (current-column) stupid-indent-level))
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(indent-line-to col))
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(when (< (current-column) col)
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(back-to-indentation))))
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(defun stupid-indent-line ()
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(interactive)
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(let ((bt (save-excursion
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(back-to-indentation)
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(current-column))))
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(cond
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k((< (current-column) bt)
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(back-to-indentation))
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((looking-at "\\s-*\n")
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(let ((col (save-excursion
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(previous-line)
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(back-to-indentation)
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(current-column))))
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(if (< (current-column) col)
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(indent-line-to col)
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(%stupid-force-indent-line))))
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(t
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(%stupid-force-indent-line)))))
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(defun stupid-outdent-line ()
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(interactive)
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(let (col)
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(save-excursion
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(back-to-indentation)
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(setq col (- (current-column) stupid-indent-level))
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(when (>= col 0)
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(indent-line-to col)))))
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(defun stupid-indent-region (start stop)
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(interactive "r")
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(setq stop (copy-marker stop))
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(goto-char start)
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(while (< (point) stop)
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(unless (and (bolp) (eolp))
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(%stupid-force-indent-line))
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(forward-line 1)))
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(defun stupid-outdent-region (start stop)
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(interactive "r")
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(setq stop (copy-marker stop))
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(goto-char start)
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(while (< (point) stop)
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(unless (and (bolp) (eolp))
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(stupid-outdent-line))
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(forward-line 1)))
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(defun stupid-indent ()
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(interactive)
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(if (use-region-p)
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(save-excursion
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(stupid-indent-region (region-beginning) (region-end))
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(setq deactivate-mark nil))
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(stupid-indent-line)))
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(defun stupid-outdent ()
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(interactive)
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(if (use-region-p)
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(save-excursion
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(stupid-outdent-region (region-beginning) (region-end))
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(setq deactivate-mark nil))
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(stupid-outdent-line)))
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(defun stupid-indent-newline ()
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(interactive)
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(when (< (point)
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(save-excursion
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(back-to-indentation)
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(point)))
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(back-to-indentation))
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(let ((col (save-excursion
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(back-to-indentation)
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(current-column))))
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(newline)
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(indent-to-column col)))
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(define-minor-mode stupid-indent-mode
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"Stupid indent mode is just plain stupid."
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:init-value nil
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:lighter "/SI"
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:global nil
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:keymap `(
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(,(kbd "<tab>") . stupid-indent)
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(,(kbd "<backtab>") . stupid-outdent)
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(,(kbd "C-c <tab>") . stupid-indent-region)
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(,(kbd "C-c <backtab>") . stupid-outdent-region)
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(,(kbd "<return>") . stupid-indent-newline)
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(,(kbd "C-c C-<tab>") . indent-according-to-mode)
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)
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(when stupid-indent-mode
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(add-hook 'write-contents-functions
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'delete-trailing-whitespace)))
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(provide 'stupid-indent-mode)
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;;; stupid-indent-mode.el ends here
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