gdformat current/all buffers, save/gdformat all modified buffers

README.md

@@ -156,8 +156,8 @@ The last selected option is saved for the next time you call `gdscript-godot-run
 Running `gdscript-hydra-show` (<kbd>C-c r</kbd>) opens a [hydra](https://github.com/abo-abo/hydra) popup with options to open the editor or run the project, a scene, or a script, including with visual debug options.
 
 ```
-d ( ) Debug   p run project  t run script  h run from history   q quit
-e ( ) Editor  s run scene    r run last    g switch to *godot*
+d ( ) Debug   p run project  t run script  h run from history   a format all    q quit
+e ( ) Editor  s run scene    r run last    g switch to *godot*  b format buffer
 
 c [ ] Visible collisions shapes
 n [ ] Visible navigation
@@ -166,7 +166,8 @@ n [ ] Visible navigation
 ### Formatting code with gdformat
 
 You can call the `gdscript-format` function to format the current buffer with
-`gdformat`. This feature requires the python package `gdtoolkit` to be installed
+`gdformat`. Alternatively `gdscript-format-all` will reformat all gdscripts in
+the project. This feature requires the python package `gdtoolkit` to be installed
 and available on the system's PATH variable.
 
 You can install gdtoolkit using the pip package manager from Python 3. Run this
@@ -228,4 +229,5 @@ Code example:
 (setq gdscript-use-tab-indents t) ;; If true, use tabs for indents. Default: t
 (setq gdscript-indent-offset 4) ;; Controls the width of tab-based indents
 (setq gdscript-godot-executable "/path/to/godot") ;; Use this executable instead of 'godot' to open the Godot editor.
+(setq gdscript-gdformat-save-and-format t) ;; Save all buffers and format them with gdformat anytime Godot executable is run.
 ```

gdscript-comint-gdformat.el

@@ -0,0 +1,111 @@
+;;; gdscript-comint-gdformat.el --- gdformat mode based on comint mode -*- lexical-binding: t; -*-
+;;
+;; Copyright (C) 2020 GDQuest and contributors
+;;
+;; Author: Josef Vlach <vlach.josef@gmail.com>
+;; URL: https://github.com/GDQuest/emacs-gdscript-mode/
+;; Version: 1.0.0
+;; Package-Requires: ((emacs "26.3"))
+;; Maintainer: nathan@gdquest.com
+;; Created: June 2020
+;; Keywords: languages
+;;
+;; This file is not part of GNU Emacs.
+;;
+;; 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:
+;;
+;;  gdformat-mode for handling stdout and stderr from gdformat executable.
+;;
+;;  It supports quick navigation from errors to file location.
+;;
+;;; Code:
+
+(require 'ansi-color)
+(require 'comint)
+(require 'compile)
+(require 'gdscript-customization)
+(require 'gdscript-utils)
+
+(defvar gdscript-comint-gdformat--mode-map
+  (let ((map (make-sparse-keymap)))
+    (set-keymap-parent map
+                       (make-composed-keymap compilation-shell-minor-mode-map
+                                             comint-mode-map))
+    (define-key map (kbd "C-c r") 'gdscript-hydra-show)
+    map)
+  "Basic mode map for `gdformat-mode'.")
+
+(defun gdscript-comint-gdformat--sentinel (process event)
+  "Display result of formatting if gdformat PROCESS exited abnormal EVENT."
+  (when (string-match "exited abnormally" event)
+    (pop-to-buffer (process-buffer process))))
+
+(defun gdscript-comint-gdformat--run (arguments)
+  "Run gdformat in comint mode.
+
+ARGUMENTS are command line arguments for gdformat executable.
+When run it will kill existing process if one exists."
+  (let ((buffer-name (gdscript-util--get-gdformat-buffer-name))
+        (inhibit-read-only t))
+
+    (when (not (executable-find gdscript-gdformat-executable))
+      (error "Error: Could not find %s on PATH.  Please customize the gdscript-gdformat-executable variable" gdscript-gdformat-executable))
+
+    (with-current-buffer (get-buffer-create buffer-name)
+      (unless (derived-mode-p 'gdformat-mode)
+        (gdformat-mode)
+        (buffer-disable-undo))
+      (erase-buffer)
+      (let* ((line-length (list (format "--line-length=%s" gdscript-gdformat-line-length)))
+             (buffer (comint-exec (current-buffer) buffer-name gdscript-gdformat-executable nil (append line-length arguments))))
+        (set-process-sentinel (get-buffer-process buffer) 'gdscript-comint-gdformat--sentinel)
+        buffer))))
+
+(define-derived-mode gdformat-mode comint-mode "gdformat"
+  "Major mode for gdformat.
+
+\\{gdscript-comint-gdformat--mode-map}"
+  (use-local-map gdscript-comint-gdformat--mode-map)
+  (add-hook 'gdformat-mode-hook 'gdscript-comint-gdformat--initialize-for-comint-mode)
+  (add-hook 'gdformat-mode-hook 'gdscript-comint-gdformat--initialize-for-compilation-mode))
+
+(defun gdscript-comint-gdformat--initialize-for-comint-mode ()
+  "Initialize buffer for comint mode support."
+  (when (derived-mode-p 'comint-mode)
+    (setq comint-process-echoes nil)
+    (setq-local comint-buffer-maximum-size 4096)
+    (setq-local comint-output-filter-functions '(ansi-color-process-output comint-postoutput-scroll-to-bottom))
+    (setq ansi-color-for-comint-mode t)))
+
+(defun gdscript-comint-gdformat--failed-file-name()
+  "Find corresponding buffer name for error message: 'at line x col y'."
+  (save-excursion
+    (save-match-data
+      (re-search-backward "exception during formatting of \\(.*\\)")
+      (match-string-no-properties 1))))
+
+(defun gdscript-comint-gdformat--initialize-for-compilation-mode ()
+  "Initialize buffer for compilation mode support."
+  (setq-local
+   compilation-error-regexp-alist
+   '(("at line \\([[:digit:]]+\\) col \\([[:digit:]]+\\)" gdscript-comint-gdformat--failed-file-name 1 2 nil nil)
+     ("exception during formatting of \\(.*\\)$" 1 nil nil nil 1)
+     ("reformatted \\(.*\\)$" 1 nil nil nil 1)))
+  (setq-local compilation-mode-font-lock-keywords nil)
+  (compilation-setup t))
+
+(provide 'gdscript-comint-gdformat)
+;;; gdscript-comint-gdformat.el ends here

gdscript-comint.el

@@ -29,13 +29,15 @@
 ;;
 ;;  godot-mode for handling stdout and stderr from godot executable.
 ;;
-;;  It support quick navigation from errors to file location.
+;;  It supports quick navigation from errors to file location.
 ;;
 ;;; Code:
 
 (require 'ansi-color)
 (require 'comint)
 (require 'compile)
+(require 'gdscript-customization)
+(require 'gdscript-format)
 (require 'gdscript-utils)
 
 (defvar gdscript-comint--mode-map
@@ -61,6 +63,8 @@ When run it will kill existing process if one exists."
 
     ;; start new godot
     (with-current-buffer (get-buffer-create buffer-name)
+      (when gdscript-gdformat-save-and-format
+        (gdscript-comint-gdformat--modified-buffers))
       (unless (derived-mode-p 'godot-mode)
         (godot-mode)
         (buffer-disable-undo))

gdscript-customization.el

@@ -117,6 +117,18 @@ PATH."
   "The path to the gdformat executable.
 By default, it assumes that the executable is in the system's
 PATH."
+  :type 'string
+  :group 'gdscript)
+
+(defcustom gdscript-gdformat-line-length 100
+  "How many characters per line to allow when formatting gdscript by gdformat."
+  :type 'integer
+  :group 'gdscript)
+
+(defcustom gdscript-gdformat-save-and-format nil
+  "If t, save all modified buffers and format them with gdformat.
+It happens anytime Godot executable is run.  Formatting runs on background,
+so it is not slowing down Godot execution."
   :type 'boolean
   :group 'gdscript)
 

gdscript-format.el

@@ -31,6 +31,31 @@
 
 ;;; Code:
 
+(require 'gdscript-comint-gdformat)
+
+(defmacro gdscript-format--save-buffer (&rest body)
+  "Execute the forms in BODY if current buffer is gdscript.
+
+It also activates `auto-revert-mode' and saves the buffer if is it modified."
+  (declare (indent 1) (debug t))
+  `(when (and (buffer-file-name)
+              (string-match ".*.gd$" (buffer-file-name)))
+     (unless (bound-and-true-p auto-revert-mode)
+       (auto-revert-mode))
+     (when (buffer-modified-p)
+       (save-buffer))
+     ,@body))
+
+(defmacro gdscript-format--with-gdscripts (gdscript-buffers &rest body)
+  "Execute the forms in BODY with GDSCRIPT-BUFFERS containing all gdscript buffers currently open."
+  (declare (indent 1) (debug t))
+  `(progn
+     (dolist (buffer (buffer-list))
+       (with-current-buffer buffer
+         (gdscript-format--save-buffer
+             (push (buffer-file-name) ,gdscript-buffers))))
+     ,@body))
+
 (defun gdscript-format--format-region (start end)
   "Format the region between START and END using `gdformat'."
   (let
@@ -44,20 +69,34 @@
         (shell-command-on-region start end cmd nil nil error-buffer t)))))
 
 (defun gdscript-format-region()
-  "Format the selected region using `gdformat'"
+  "Format the selected region using `gdformat'."
   (interactive)
   (gdscript-format--format-region
    (region-beginning) (region-end)))
 
 (defun gdscript-format-buffer()
-  "Format the entire current buffer using `gdformat'"
+  "Format the current buffer using `gdformat'."
   (interactive)
-  (let ((original-point (point))
-        (original-window-pos (window-start)))
-    (gdscript-format--format-region
-     (point-min) (point-max))
-    (goto-char original-point)
-    (set-window-start (selected-window) original-window-pos)))
+  (gdscript-format--save-buffer
+      (gdscript-comint-gdformat--run (list (buffer-file-name)))))
+
+(defun gdscript-comint-gdformat--modified-buffers ()
+  "Save and format all modified buffers using `gdformat'."
+  (let ((gdscript-buffers))
+    (gdscript-format--with-gdscripts gdscript-buffers
+      (when gdscript-buffers
+        (gdscript-comint-gdformat--run gdscript-buffers)))))
+
+(defun gdscript-format-all()
+  "Save modified buffers and then format all gdscripts in the project."
+  (interactive)
+  (let ((gdscript-buffers))
+    (gdscript-format--with-gdscripts gdscript-buffers
+      (let* ((rl (gdscript-util--find-project-configuration-file))
+             (gdscript-file-list (directory-files-recursively rl ".*.gd$" t)))
+        (let ((all-gdscripts (delete-dups (append gdscript-file-list gdscript-buffers))))
+          (when all-gdscripts
+            (pop-to-buffer (gdscript-comint-gdformat--run all-gdscripts))))))))
 
 (provide 'gdscript-format)
 

gdscript-hydra.el

@@ -36,6 +36,7 @@
 ;;; Code:
 
 (require 'hydra nil t)
+(require 'gdscript-format)
 (require 'gdscript-godot)
 (require 'gdscript-history)
 (require 'gdscript-utils)
@@ -117,8 +118,8 @@ on hydra checkboxes."
                                         :body-pre (setq gdscript-hydra--open t)
                                         :before-exit (setq gdscript-hydra--open nil))
     "
-_d_ (?d?) Debug   _p_ run project  _t_ run script  _h_ run from history   _q_ quit
-_e_ (?e?) Editor  _s_ run scene    _r_ run last    _g_ switch to *godot*
+_d_ (?d?) Debug   _p_ run project  _t_ run script  _h_ run from history   _a_ format all     _q_ quit
+_e_ (?e?) Editor  _s_ run scene    _r_ run last    _g_ switch to *godot*  _b_ format buffer
 
 _c_ [?c?] Visible collisions shapes
 _n_ [?n?] Visible navigation
@@ -146,6 +147,8 @@ _n_ [?n?] Visible navigation
                gdscript-hydra--debug t
                gdscript-hydra--editor nil) (gdscript-hydra--selected gdscript-hydra--debug-navigation))
     ("g" (gdscript-hydra--open-godot-buffer) :color blue)
+    ("a" (gdscript-format-all))
+    ("b" (gdscript-format-buffer))
     ("q" nil)))
 
 (provide 'gdscript-hydra)

gdscript-utils.el

@@ -118,6 +118,10 @@ WARNING: the Godot project must exist for this function to work."
   "Return buffer name for godot's stdout/stderr output."
   (format "*godot - %s*" (gdscript-util--get-godot-project-name)))
 
+(defun gdscript-util--get-gdformat-buffer-name ()
+  "Return buffer name for godot's stdout/stderr output."
+  (format "*gdformat - %s*" (gdscript-util--get-godot-project-name)))
+
 (defun gdscript-util--get-godot-project-file-path-relative (file-path)
   "Return the relative path of `FILE-PATH' to Godot's configuration file."
   (concat (file-name-sans-extension