57 lines
2.3 KiB
EmacsLisp
57 lines
2.3 KiB
EmacsLisp
;;; Clang-format emacs integration for use with C/Objective-C/C++.
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;; This defines a function clang-format-region that you can bind to a key.
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;; A minimal .emacs would contain:
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;;
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;; (load "<path-to-clang>/tools/clang-format/clang-format.el")
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;; (global-set-key [C-M-tab] 'clang-format-region)
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;;
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;; Depending on your configuration and coding style, you might need to modify
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;; 'style' in clang-format, below.
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(require 'json)
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;; *Location of the clang-format binary. If it is on your PATH, a full path name
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;; need not be specified.
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(defvar clang-format-binary "clang-format")
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(defun clang-format-region ()
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"Use clang-format to format the currently active region."
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(interactive)
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(let ((beg (if mark-active
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(region-beginning)
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(min (line-beginning-position) (1- (point-max)))))
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(end (if mark-active
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(region-end)
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(line-end-position))))
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(clang-format beg end)))
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(defun clang-format-buffer ()
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"Use clang-format to format the current buffer."
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(interactive)
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(clang-format (point-min) (point-max)))
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(defun clang-format (begin end)
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"Use clang-format to format the code between BEGIN and END."
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(let* ((orig-windows (get-buffer-window-list (current-buffer)))
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(orig-window-starts (mapcar #'window-start orig-windows))
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(orig-point (point))
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(style "file"))
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(unwind-protect
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(call-process-region (point-min) (point-max) clang-format-binary
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t (list t nil) nil
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"-offset" (number-to-string (1- begin))
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"-length" (number-to-string (- end begin))
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"-cursor" (number-to-string (1- (point)))
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"-assume-filename" (buffer-file-name)
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"-style" style)
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(goto-char (point-min))
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(let ((json-output (json-read-from-string
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(buffer-substring-no-properties
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(point-min) (line-beginning-position 2)))))
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(delete-region (point-min) (line-beginning-position 2))
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(goto-char (1+ (cdr (assoc 'Cursor json-output))))
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(dotimes (index (length orig-windows))
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(set-window-start (nth index orig-windows)
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(nth index orig-window-starts)))))))
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