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https://github.com/godotengine/emacs-gdscript-mode.git
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94 lines
3.7 KiB
EmacsLisp
94 lines
3.7 KiB
EmacsLisp
;;; gdscript-utils.el --- Utility functions for gdscript-mode -*- lexical-binding: t; -*-
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;; Copyright (C) 2020 GDQuest, Free Software Foundation, Inc.
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;; Author: Nathan Lovato <nathan@gdquest.com>, Fabián E. Gallina <fgallina@gnu.org>
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;; URL: https://github.com/GDQuest/emacs-gdscript-mode/
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;; Version: 0.1.0
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;; Package-Requires: ((emacs "26.0"))
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;; Maintainer: nathan@gdquest.com
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;; Created: Jan 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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;; Misc utility functions for GDScript mode.
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;;; Code:
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(defun gdscript--util-goto-line (line-number)
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"Move point to LINE-NUMBER."
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(goto-char (point-min))
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(forward-line (1- line-number)))
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(defun gdscript--util-forward-comment (&optional direction)
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"Gdscript mode specific version of `forward-comment'.
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Optional argument DIRECTION defines the direction to move to."
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(let ((comment-start (gdscript-syntax-context 'comment))
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(factor (if (< (or direction 0) 0)
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-99999
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99999)))
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(when comment-start
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(goto-char comment-start))
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(forward-comment factor)))
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(defun gdscript--util-list-directories (directory &optional predicate max-depth)
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"List DIRECTORY subdirs, filtered by PREDICATE and limited by MAX-DEPTH.
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Argument PREDICATE defaults to `identity' and must be a function
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that takes one argument (a full path) and returns non-nil for
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allowed files. When optional argument MAX-DEPTH is non-nil, stop
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searching when depth is reached, else don't limit."
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(let* ((dir (expand-file-name directory))
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(dir-length (length dir))
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(predicate (or predicate #'identity))
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(to-scan (list dir))
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(tally nil))
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(while to-scan
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(let ((current-dir (car to-scan)))
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(when (funcall predicate current-dir)
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(setq tally (cons current-dir tally)))
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(setq to-scan (append (cdr to-scan)
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(gdscript--util-list-files
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current-dir #'file-directory-p)
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nil))
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(when (and max-depth
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(<= max-depth
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(length (split-string
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(substring current-dir dir-length)
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"/\\|\\\\" t))))
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(setq to-scan nil))))
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(nreverse tally)))
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(defun gdscript--util-list-files (dir &optional predicate)
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"List files in DIR, filtering with PREDICATE.
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Argument PREDICATE defaults to `identity' and must be a function
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that takes one argument (a full path) and returns non-nil for
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allowed files."
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(let ((dir-name (file-name-as-directory dir)))
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(apply #'nconc
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(mapcar (lambda (file-name)
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(let ((full-file-name (expand-file-name file-name dir-name)))
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(when (and
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(not (member file-name '("." "..")))
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(funcall (or predicate #'identity) full-file-name))
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(list full-file-name))))
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(directory-files dir-name)))))
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(provide 'gdscript-utils)
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;;; gdscript-utils.el ends here
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