mirror of
https://github.com/godotengine/emacs-gdscript-mode.git
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94 lines
3.9 KiB
EmacsLisp
94 lines
3.9 KiB
EmacsLisp
;;; gdscript-format.el --- GDScript formatting with gdformat -*- lexical-binding: t; -*-
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;; Copyright (C) 2020 GDQuest, Pawel Lampe
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;; Author: Pawel Lampe <pawel.lampe@gmail.com>, Nathan Lovato <nathan@gdquest.com>
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;; URL: https://github.com/GDQuest/emacs-gdscript-mode/
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;; Version: 1.0.0
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;; Package-Requires: ((emacs "26.0"))
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;; Maintainer: nathan@gdquest.com
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;; Created: Feb 2020
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;; Keywords: languages
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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 <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Format a buffer containing GDScript code with the gdformat GDScript formatter.
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;; This code is derived from gdtoolkit, see https://github.com/Scony/godot-gdscript-toolkit
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;;; Code:
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(defun gdscript-format--run-gdformat (buffer-input buffer-output buffer-error)
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"Call gdformat process."
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(with-current-buffer buffer-input
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(let ((process (make-process :name "gdformat"
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:command (list "gdformat" "-"):buffer
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buffer-output
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:stderr buffer-error
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:noquery t
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:sentinel (lambda (_process _event)))))
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(set-process-query-on-exit-flag (get-buffer-process buffer-error)
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nil)
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(set-process-sentinel (get-buffer-process buffer-error)
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(lambda (_process _event)))
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(save-restriction (widen)
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(process-send-region process
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(point-min)
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(point-max)))
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(process-send-eof process)
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(accept-process-output process nil nil t)
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(while (process-live-p process)
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(accept-process-output process nil nil t))
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(process-exit-status process))))
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(defun gdscript-format-buffer ()
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"Formats current buffer using 'gdformat'."
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(interactive)
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(let* ((buffer-start (current-buffer))
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(point-start (point))
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(window-pos-start (window-start))
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(buffer-temp (get-buffer-create "*gdformat*"))
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(buffer-error (get-buffer-create "*gdformat-error*")))
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(dolist (buf (list buffer-temp buffer-error))
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(with-current-buffer buf
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(erase-buffer)))
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(condition-case err
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(if (/= 0 (gdscript-format--run-gdformat buffer-start buffer-temp
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buffer-error))
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(error "GDSCript formatter: failed, see buffer %s for details"
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(buffer-name buffer-error))
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(if (/= 0 (compare-buffer-substrings buffer-temp nil
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nil buffer-start nil nil))
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(progn
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(with-current-buffer buffer-temp
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(copy-to-buffer buffer-start
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(point-min)
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(point-max)))
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(goto-char point-start)
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(set-window-start (selected-window)
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window-pos-start)
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(message "gdscript formatter: success"))
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(message "gdscript formatter: nothing to do"))
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(mapc 'kill-buffer
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(list buffer-temp buffer-error)))
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(error (message "%s"
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(error-message-string err))
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(pop-to-buffer buffer-error)))))
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(provide 'gdscript-format)
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;;; gdscript-format.el ends here
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