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;;; uncrustify-mode.el --- Minor mode to automatically uncrustify.
;; Copyright (C) 2012 tabi
;; Author: Tabito Ohtani <koko1000ban@gmail.com>
;; Version: 0.01
;; Keywords: uncrustify
;; 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 <http://www.gnu.org/licenses/>.
;;; Installation:
;; drop requirements and this file into a directory in your `load-path',
;; and put these lines into your .emacs file.
;; (require 'uncrusfify-mode)
;; (add-hook 'c-mode-common-hook
;; '(lambda ()
;; (uncrustify-mode 1)))
;;; ChangeLog:
;; * 0.0.1:
;; Initial version.
;; case
(eval-when-compile
(require 'cl))
;;; Variables:
(defcustom uncrustify-config-path
"~/.uncrustify.cfg"
"uncrustify config file path"
:group 'uncrustify
:type 'file)
(make-variable-buffer-local 'uncrustify-config-path)
(defcustom uncrustify-bin
"uncrustify -q"
"The command to run uncrustify."
:group 'uncrustify)
;;; Functions:
(defun uncrustify-get-lang-from-mode (&optional mode)
"uncrustify lang option"
(let ((m (or mode major-mode)))
(case m
('c-mode "C")
('c++-mode "CPP")
('d-mode "D")
('java-mode "JAVA")
('objc-mode "OC")
(t
nil))))
(defun uncrustify-point->line (point)
"Get the line number that POINT is on."
;; I'm not bothering to use save-excursion because I think I'm
;; calling this function from inside other things that are likely to
;; use that and all I really need to do is restore my current
;; point. So that's what I'm doing manually.
(let ((line 1)
(original-point (point)))
(goto-char (point-min))
(while (< (point) point)
(incf line)
(forward-line))
(goto-char original-point)
line))
(defun uncrustify-invoke-command (lang start-in end-in)
"Run uncrustify on the current region or buffer."
(if lang
(let ((start (or start-in (point-min)))
(end (or end-in (point-max)))
(original-line (uncrustify-point->line (point)))
(cmd (concat uncrustify-bin " -c " uncrustify-config-path " -l " lang))
(out-buf (get-buffer-create "*uncrustify-out*"))
(error-buf (get-buffer-create "*uncrustify-errors*")))
(with-current-buffer error-buf (erase-buffer))
(with-current-buffer out-buf (erase-buffer))
;; Inexplicably, save-excursion doesn't work to restore the
;; point. I'm using it to restore the mark and point and manually
;; navigating to the proper new-line.
(let ((result
(save-excursion
(let ((ret (shell-command-on-region start end cmd t t error-buf nil)))
(if (and
(numberp ret)
(zerop ret))
;; Success! Clean up.
(progn
(message "Success! uncrustify modify buffer.")
(kill-buffer error-buf)
t)
;; Oops! Show our error and give back the text that
;; shell-command-on-region stole.
(progn (undo)
(with-current-buffer error-buf
(message "uncrustify error: <%s> <%s>" ret (buffer-string)))
nil))))))
;; This goto-line is outside the save-excursion becuase it'd get
;; removed otherwise. I hate this bug. It makes things so ugly.
(goto-line original-line)
(not result)))
(message "uncrustify not support this mode : %s" major-mode)))
(defun uncrustify ()
(interactive)
(save-restriction
(widen)
(uncrustify-invoke-command (uncrustify-get-lang-from-mode) (region-beginning) (region-end))))
(defun uncrustify-buffer ()
(interactive)
(save-restriction
(widen)
(uncrustify-invoke-command (uncrustify-get-lang-from-mode) (point-min) (point-max))))
;;; mode
(defun uncrustify-write-hook ()
"Uncrustifys a buffer during `write-file-hooks' for `uncrustify-mode'.
if uncrustify returns not nil then the buffer isn't saved."
(if uncrustify-mode
(save-restriction
(widen)
(uncrustify-invoke-command (uncrustify-get-lang-from-mode) (point-min) (point-max)))))
;;;###autoload
(define-minor-mode uncrustify-mode
"Automatically `uncrustify' when saving."
:lighter " Uncrustify"
(if (not (uncrustify-get-lang-from-mode))
(message "uncrustify not support this mode : %s" major-mode)
(if (version<= "24" emacs-version)
(if uncrustify-mode
(add-hook 'write-file-hooks 'uncrustify-write-hook nil t)
(remove-hook 'uncrustify-write-hook t))
(make-local-hook 'write-file-hooks)
(funcall (if uncrustify-mode #'add-hook #'remove-hook)
'write-file-hooks 'uncrustify-write-hook))))
(provide 'uncrustify-mode)
;;; uncrustify-mode.el ends here
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