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;;; eselect-mode.el --- edit eselect files -*-lexical-binding:t-*-
;; Copyright 2006-2023 Gentoo Authors
;; Author: Matthew Kennedy <mkennedy@gentoo.org>
;; Diego Pettenò <flameeyes@gentoo.org>
;; Christian Faulhammer <fauli@gentoo.org>
;; Ulrich Müller <ulm@gentoo.org>
;; Maintainer: <emacs@gentoo.org>
;; Keywords: languages
;; This file is part of the 'eselect' tools framework.
;; eselect 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 2 of the License, or
;; (at your option) any later version.
;; eselect 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 eselect. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;;; Code:
(require 'sh-script)
(require 'font-lock)
;;; Variables.
(defgroup eselect nil
"Major mode for Gentoo eselect modules."
:group 'languages)
(defcustom eselect-mode-fix-whitespace t
"If non-nil, delete trailing whitespace before writing a file."
:type 'boolean
:group 'eselect)
(defcustom eselect-mode-update-copyright t
"If non-nil, update copyright years before writing a file."
:type 'boolean
:group 'eselect)
(defvar eselect-mode-copyright-regexp
"^#[ \t]*Copyright[ \t]+\\([1-9][0-9]+\\)\\(?:-\\([1-9][0-9]+\\)\\)?\
[ \t]+\\(.*\\<Gentoo Authors\\>.*\\)")
;;; Font-lock.
(defvar eselect-mode-keywords-warn
'(("eval")
font-lock-warning-face))
(defvar eselect-mode-keywords-core
'(("die" "check_do" "do_action" "inherit" "sed")
font-lock-type-face))
(defvar eselect-mode-keywords-output
'(("write_error_msg" "write_warning_msg" "write_list_start"
"write_numbered_list_entry" "write_kv_list_entry"
"write_numbered_list" "highlight" "highlight_warning"
"highlight_marker" "is_output_mode" "space")
font-lock-type-face))
(defvar eselect-mode-keywords-tests
'(("has" "is_function" "is_number")
font-lock-type-face))
(defvar eselect-mode-keywords-path-manipulation
'(("basename" "dirname" "canonicalise" "relative_name")
font-lock-type-face))
(defvar eselect-mode-keywords-config
'(("store_config" "load_config" "append_config")
font-lock-type-face))
(defvar eselect-mode-keywords-multilib
'(("list_libdirs" "get_libdir")
font-lock-type-face))
(defvar eselect-mode-keywords-package-manager
'(("arch" "envvar" "best_version" "has_version" "get_repositories"
"get_repo_news_dir" "env_update")
font-lock-type-face))
(defvar eselect-mode-font-lock-keywords
(mapcar
(lambda (x)
(cons (regexp-opt (car x) 'words)
(cadr x)))
(list
eselect-mode-keywords-warn
eselect-mode-keywords-core
eselect-mode-keywords-output
eselect-mode-keywords-tests
eselect-mode-keywords-path-manipulation
eselect-mode-keywords-config
eselect-mode-keywords-multilib
eselect-mode-keywords-package-manager)))
;;; Mode definitions.
(defun eselect-mode-update-copyright ()
"Update the copyright notice in the file's header."
(save-excursion
(goto-char (point-min))
(let ((case-fold-search nil))
(when (re-search-forward eselect-mode-copyright-regexp 400 t)
(let* ((y1 (string-to-number (match-string 1)))
(y2 (and (match-string 2)
(string-to-number (match-string 2))))
(year (save-match-data (format-time-string "%Y" nil t)))
(y (string-to-number year)))
(if y2
;; Update range of years
(if (or (> 2005 y1) (>= y1 y2) (> y2 y))
(lwarn 'eselect :warning
"Suspicious range of copyright years: %d-%d" y1 y2)
(if (/= y2 y)
(replace-match year t t nil 2)))
;; Update single year and convert to range if necessary
(if (or (> 2005 y1) (> y1 y))
(lwarn 'eselect :warning "Suspicious copyright year: %d" y1)
(if (/= y1 y)
(replace-match (concat "\\1-" year) t nil nil 1)))))))))
(defun eselect-mode-before-save ()
(when eselect-mode-fix-whitespace
(delete-trailing-whitespace))
(when eselect-mode-update-copyright
(eselect-mode-update-copyright)
;; call it only once per buffer
(set (make-local-variable 'eselect-mode-update-copyright) nil))
;; return nil, otherwise the file is presumed to be written
nil)
;;;###autoload
(define-derived-mode eselect-mode sh-mode "Eselect"
"Major mode for .eselect files."
(add-hook 'write-contents-functions 'eselect-mode-before-save t t)
(sh-set-shell "bash")
(setq tab-width 4)
(setq indent-tabs-mode t))
(add-hook 'eselect-mode-hook
(lambda () (font-lock-add-keywords
nil eselect-mode-font-lock-keywords)))
;;;###autoload
(add-to-list 'auto-mode-alist '("\\.eselect\\'" . eselect-mode))
(provide 'eselect-mode)
;; Local Variables:
;; coding: utf-8
;; End:
;;; eselect-mode.el ends here
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