;;; vcard-mode.el --- Major mode for viewing vCard files  -*- lexical-binding: t; -*-

;; Copyright (C) 2019  Free Software Foundation, Inc.

;; Version: 0
;; Package-Requires: ((emacs "25.1"))

;; Author: Eric Abrahamsen <address@hidden>
;; Maintainer: Eric Abrahamsen <address@hidden>

;; This program 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 3 of the License, or
;; (at your option) any later version.

;; This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; This file contains `vcard-mode', for viewing vcard files.

;;; Code:

(defface vcard-property-face
  '((t :inherit font-lock-function-name-face))
  "Face for highlighting property names."
  :group 'vcard)

(defface vcard-parameter-key-face
  '((t :inherit font-lock-comment-face))
  "Face for highlighting parameter keys."
  :group 'vcard)

(defface vcard-parameter-value-face
  '((t :inherit font-lock-type-face))
  "Face for highlighting parameter values."
  :group 'vcard)

(defvar vcard-font-lock-keywords
  '("BEGIN:VCARD" "END:VCARD"
    ("^[^;:]+" . 'vcard-property-face)
    (";\\([^=]+\\)=" (1 'vcard-parameter-key-face))
    ("=\\([^;:]+\\)[;:]" (1 'vcard-parameter-value-face))))

;;;###autoload
(define-derived-mode vcard-mode text-mode "vCard"
  "Major mode for viewing vCard files."
  (turn-off-auto-fill)
  (set (make-local-variable 'paragraph-start) "BEGIN:VCARD")
  (setq font-lock-defaults '(vcard-font-lock-keywords)))

;;;###autoload
(add-to-list 'auto-mode-alist '("\\.[Vv][Cc][Ff]\\'" . vcard-mode))

(provide 'vcard-mode)
;;; vcard-mode.el ends here