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php-format.el
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;;; php-format.el --- Code reformatter for PHP buffer -*- lexical-binding: t; -*-
;; Copyright (C) 2020 Friends of Emacs-PHP development
;; Author: USAMI Kenta <[email protected]>
;; Created: 5 Mar 2023
;; Version: 0.1.0
;; Keywords: tools, php
;; URL: https://github.com/emacs-php/php-mode.el
;; License: GPL-3.0-or-later
;; 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 feature is for execute PHP code formatting tools.
;; ## Supported tools:
;;
;; - Easy Coding Standard (ecs) https://github.com/easy-coding-standard/easy-coding-standard
;; - PHP-CS-Fixer (php-cs-fixer) https://github.com/PHP-CS-Fixer/PHP-CS-Fixer
;; - PHP_CodeSniffer (phpcbf) https://github.com/squizlabs/PHP_CodeSniffer
;;
;; It supports both per-project and globally installed ones.
;;
;; ## How to use
;;
;; Add following line to setup function for php-mode.
;;
;; (php-format-auto-mode +1)
;;
;; ## Customization
;;
;; These variables can be set either by dir-locals.el or by custom-set-variable.
;;
;; - php-format-auto-mode-hook-depth
;; - php-format-command
;; - php-format-command-dir
;; - php-format-default-idle-time
;; - php-format-result-display-method-alist
;;
;; ## Display methods
;;
;; How formatting is performed and how the results are displayed can be controlled
;; by the following keywords.
;;
;; - idle: Asynchronously apply formatting to idle time in Emacs using `run-with-idle-timer'
;; - async: Immediately execute an asynchronous process to apply formatting
;; - compile: Apply formatting using the compile command. Doesn't lock, but results pop up
;; - silent: Apply formatting immediately and synchronously.
;; No message is displayed, but Emacs is locked while it is being processed.
;; - nil: Apply formatting immediately and synchronously.
;; Emacs will be locked until formatting is done and the result will pop up.
;;
;;; Code:
(require 'cl-lib)
(require 'php-project)
(defvar php-format-formatter-alist
'((ecs :marker ("ecs.php")
:command ("ecs" "check" "--fix" "--no-progress-bar" "--"))
(php-cs-fixer :marker (".php-cs-fixer.dist.php" ".php-cs-fixer.php")
:command ("php-cs-fixer" "fix" "--show-progress=none"))
(phpcbf :marker ("phpcs.xml.dist" "phpcs.xml")
:command ("phpcbf"))))
(defvar php-format-lighter " phpf")
(defvar php-format-output-buffer " *PHP Format*")
(defvar php-format--exec-method nil)
(defvar php-format--idle-timer nil)
;; Customize variables
(defgroup php-format nil
"Apply code reformat."
:tag "PHP Format"
:group 'php)
(defcustom php-format-auto-mode-hook-depth -50
"A depth number in the range -100..100 for `add-hook'."
:tag "PHP Format Auto Mode Hook Depth"
:type 'integer
:safe #'integerp
:group 'php)
(defcustom php-format-command 'auto
"A formatter symbol, or a list of command and arguments."
:tag "PHP Format Command"
:type '(choice (const :tag "Disabled reformat codes" nil)
(const :tag "Auto" 'auto)
(const :tag "Easy Coding Standard" 'ecs)
(const :tag "PHP-CS-Fixer" 'php-cs-fixer)
(const :tag "PHP Code Beautifier and Fixer" 'phpcbf)
(repeat :tag "Command and arguments" string))
:safe (lambda (v) (or (symbolp v) (listp v)))
:group 'php-format)
(defcustom php-format-command-dir "vendor/bin"
"A relative path to the directory where formatting tool is installed."
:tag "PHP Format Command"
:type 'string
:safe #'stringp
:group 'php-format)
(defcustom php-format-default-idle-time 3
"Number of seconds to wait idle before formatting."
:tag "PHP Format Auto Mode Hook Depth"
:type 'integer
:safe #'integerp
:group 'php)
(defcustom php-format-result-display-method-alist '((php-format-on-after-save-hook . idle)
(php-format-this-buffer-file . silent)
(php-format-project . compile))
"An alist of misplay the result method of the formatting process."
:tag "PHP Format Result Display Method"
:type '(alist :key-type function
:value-type symbol)
:group 'php-format)
(defcustom php-format-disable-async-format-buffer-has-modified t
"When set to non-NIL, disables async formatting if buffer is modified (unsaved)."
:tag "PHP Format Disable Async Format Buffer Has Modified"
:type 'boolean
:group 'php-format)
;; Internal functions
(defsubst php-format--register-timer (sec command-args)
"Register idle-timer with SEC and COMMAND-ARGS."
(unless php-format--idle-timer
(setq php-format--idle-timer
(run-with-idle-timer sec nil #'php-format--execute-delayed-format
default-directory command-args))))
(defun php-format--execute-format (files)
"Execute PHP formatter with FILES."
(let* ((default-directory (php-project-get-root-dir))
(command-args (php-format--get-command-args))
command-line)
(when (null command-args)
(user-error "No available PHP formatter settings detected"))
(setq command-args (append command-args files))
(setq command-line (mapconcat #'shell-quote-argument command-args " "))
(pcase php-format--exec-method
(`(idle ,sec) (php-format--register-timer sec command-args))
('idle (php-format--register-timer php-format-default-idle-time command-args))
('async (apply #'call-process-shell-command (car command-args) nil nil nil
(append (cdr command-args) (list "&"))))
('compile (compile command-line))
('silent (shell-command-to-string command-line))
('nil (shell-command command-line))
(_ (user-error "`%s' is unexpected php-format--exec-method" php-format--exec-method)))))
(defun php-format--get-command-args ()
"Return a list of command and arguments."
(if (listp php-format-command)
php-format-command
(let ((cmd php-format-command)
args executable vendor)
(when (eq 'auto cmd)
(setq cmd (cl-loop for (sym . plist) in php-format-formatter-alist
for files = (plist-get plist :marker)
if (cl-find-if
(lambda (file) (file-exists-p (expand-file-name file default-directory)))
files)
return sym))
(setq-local php-format-command cmd))
(when-let (tup (plist-get (cdr-safe (assq cmd php-format-formatter-alist)) :command))
(setq executable (car tup))
(setq args (cdr tup))
(setq vendor (expand-file-name executable (expand-file-name php-format-command-dir default-directory)))
(cond
((file-exists-p vendor) (cons vendor args))
((executable-find executable) (cons executable args)))))))
(defun php-format--execute-delayed-format (dir command-args)
"Asynchronously execute PHP format with COMMAND-ARGS in DIR."
(setq php-format--idle-timer nil)
(let ((default-directory dir))
(when (not (and php-format-disable-async-format-buffer-has-modified
(buffer-modified-p)))
(apply #'call-process-shell-command (car command-args) nil nil nil
(append (cdr command-args) (list "&"))))))
;; Public functions and minor mode
;;;###autoload
(defun php-format-this-buffer-file ()
"Apply format this buffer file."
(interactive)
(when php-format-command
(when (null buffer-file-name)
(user-error "This file has not yet been saved"))
(when (file-remote-p buffer-file-name)
(user-error "PHP Format feature does not yet support remote files"))
(let ((php-format--exec-method (cdr-safe (assq 'php-format-this-buffer-file php-format-result-display-method-alist))))
(php-format--execute-format (list buffer-file-name)))))
;;;###autoload
(defun php-format-project ()
"Apply format this buffer file."
(interactive)
(unless php-format-command
(user-error "Disabled `php-format-command' in this project"))
(let ((php-format--exec-method (cdr-safe (assq 'php-format-project php-format-result-display-method-alist))))
(php-format--execute-format nil)))
;;;###autoload
(defun php-format-on-after-save-hook ()
"Apply format on after save hook."
(when (and php-format-command buffer-file-name (not (file-remote-p buffer-file-name)))
(let ((php-format--exec-method (cdr-safe (assq 'php-format-on-after-save-hook php-format-result-display-method-alist))))
(php-format--execute-format nil))))
;;;###autoload
(define-minor-mode php-format-auto-mode
"Automatically apply formatting when saving an edited file."
:group 'php-format
:lighter php-format-lighter
(if php-format-auto-mode
(add-hook 'after-save-hook 'php-format-on-after-save-hook php-format-auto-mode-hook-depth t)
(remove-hook 'after-save-hook 'php-format-on-after-save-hook t)))
(provide 'php-format)
;;; php-format.el ends here