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90 lines
3.0 KiB
90 lines
3.0 KiB
;;; package.use-mode.el --- Emacs mode for editing Gentoo package.use files -*- lexical-binding: t; -*-
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;; Copyright (C) 2020 C-xC-c
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;; Author: C-xC-c <boku@plum.moe
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;; Created: July 2020
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;; Package-Version: 1.3.0
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;; Keywords: languages, gentoo
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;; URL: https://words.plum.moe/package.use-mode.html
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;; Package-Requires: ((emacs "24.1"))
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;; This file is not part of GNU Emacs
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;;; License:
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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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;;
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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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;;
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;; You should have received a copy of the GNU General Public License
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;; along with this file. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;; Emacs mode for Gentoo package.use
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;;
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;; Thanks to nginx-mode where I stole most of this.
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;;; Code:
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(defvar package.use-mode-syntax-table
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(let ((table (make-syntax-table)))
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(modify-syntax-entry ?# "< b" table)
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(modify-syntax-entry ?\n "> b" table)
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table)
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"Syntax table for `package.use-mode'.")
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(defvar package.use--version-bit
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(rx line-start (? (or "=" ">" "<" ">=" "<="))))
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(defconst package.use--characters
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`(1+ (any alnum "_" "." "+" "*" "-"))
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"The characters allowed in a package.use catagory or name bit.")
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(defvar package.use--catagory-bit
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(rx (eval package.use--characters) "/"))
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(defvar package.use--name-bit
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(rx (group (eval package.use--characters))))
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(defvar package.use-font-lock-keywords
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(list
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;; >=www-servers/
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;; www-servers/
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`(,(concat package.use--version-bit package.use--catagory-bit)
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0 font-lock-function-name-face)
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;; >=nginx-1.19.1
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;; nginx
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`(,(concat package.use--version-bit package.use--name-bit)
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0 font-lock-keyword-face)
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;; >=www-servers/nginx-1.19.1
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;; www-servers/nginx
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`(,(concat package.use--version-bit package.use--catagory-bit package.use--name-bit)
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(1 font-lock-variable-name-face t))
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;; dev-langs/python:3.7
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`(,(rx ":" (1+ (any digit ".")))
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0 font-lock-type-face t)
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;; www-servers/nginx NGINX_MODULES_HTTP:
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`(,(rx (1+ whitespace) (1+ (any alnum "_" "-")) ":")
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0 font-lock-constant-face t)))
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(define-derived-mode package.use-mode prog-mode "package.use"
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:syntax-table package.use-mode-syntax-table
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:keymap nil
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(setq-local comment-start "# ")
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(setq-local comment-start-skip "#+ *")
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(setq-local comment-end "")
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(setq-local comment-auto-fill-only-comments t)
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(setq-local require-final-newline t)
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(setq-local font-lock-defaults
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'(package.use-font-lock-keywords nil)))
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;;;###autoload
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(add-to-list 'auto-mode-alist `(,(rx "package." (or "use" "accept_keywords" "mask" "unmask" "license") (or eol "/")) . package.use-mode))
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(provide 'package.use-mode)
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;;; package.use-mode.el ends here
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