dotfiles/emacs/.emacs.d/init/oni-align.el

;;; oni-align.el --- Alignment configuration         -*- lexical-binding: t; -*-

;; Copyright (C) 2018  Tom Willemse

;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords: local

;; 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 <http://www.gnu.org/licenses/>.

;;; Commentary:

;; Configuration for several alignment options.

;;; Code:

(require 'align)

;; Align CSS files like so:

;;   body        { color: #ffffff;            }
;;   .some-class { background-color: #ffffff; }
;;   #some-id    { width: 200px;              }

;;   .some-more-class {
;;       color:            #ffffff;
;;       background-color: #ffffff;
;;       width:            200px;
;;   }

;; Keep these in order. They are each added to the _front_ of the
;; list and are applied in order. Changing their order will change
;; the results.
(add-to-list 'align-rules-list
             `(css-closing-brace
               (regexp . ,(rx (group (0+ whitespace)) "}" eol))
               (group . (1))
               (modes . '(scss-mode css-mode))))

(add-to-list 'align-rules-list
             `(css-colons
               (regexp . ,(rx bol
                              (0+ whitespace)
                              (1+ (any (?a . ?z) ?- ?$))
                              ":"
                              (group (0+ whitespace))
                              (0+ nonl)
                              ";"
                              eol))
               (group . (1))
               (modes . '(scss-mode css-mode))
               (repeat . t)))

(add-to-list 'align-rules-list
             `(css-opening-brace
               (regexp . ,(rx bol
                              (0+ whitespace)
                              (0+ (any ?# ?. ?, ?\s ?& ?: ?-
                                       (?a . ?z) (?A . ?Z) (?0 . ?9)))
                              (any (?a . ?z) (?A . ?Z) (?0 . ?9))
                              (group (0+ whitespace))
                              "{"
                              (0+ nonl)))
               (group . (1))
               (modes . '(scss-mode css-mode))))

;; In PHP code it's nice to have any ~=>~ aligned.

;; <?php
;; array(
;;     'foo'  => 'bar',
;;     'frob' => 'baz'
;; );
;; ?>

(add-to-list 'align-rules-list
             `(php-array-arrow
               (regexp . ,(rx any (group (zero-or-more whitespace)) "=>" any))
               (group . (1))
               (modes . '(php-mode web-mode))
               (repeat . t)))

;; The WordPress coding standards specify that multiple assignments
;; should have their assignment operators aligned.

;; <?php
;; $variable          = "value";
;; $other_variable    = "other value";
;; $one_more_variable = "one more variable";

(add-to-list align-rules-list
             `(php-assignment-equals
               (regexp . ,(rx any (group (zero-or-more whitespace)) "="
                              (zero-or-more whitespace) any))
               (group . (1))
               (modes . '(php-mode web-mode))
               (repeat . t)))

(provide 'oni-align)
;;; oni-align.el ends here