emacs: improve c/c++ formatting

niclas · May 1, 2024 · 37b8038 · 37b8038
1 parent 7e34f55
commit 37b8038
Showing 1 changed file with 23 additions and 9 deletions.
diff --git a/.emacs.d/init.el b/.emacs.d/init.el
@@ -42,13 +42,28 @@
 ;;                                        "\\\\" "://"))
 ;;   (global-ligature-mode t))
 
-;; C
-(setq c-default-style "linux")
-
-(require 'eglot)
-(add-to-list 'eglot-server-programs'((c++-mode c-mode) "clangd"))
-(add-hook 'c-mode-hook 'eglot-ensure)
-(add-hook 'c++-mode-hook 'eglot-ensure)
+;; C/C++
+(defun my-c/cpp-mode-common-hook ()
+  (c-set-offset 'substatement-open 0)
+  (setq c++-tab-always-indent t)
+  (setq c-basic-offset 4)
+  (setq c-indent-level 4)
+  (setq tab-stop-list '(4 8 12 16 20 24 28 32 36 40 44 48 52 56 60))
+  (setq tab-width 4)
+  (setq indent-tabs-mode t))
+(add-hook 'c-mode-common-hook 'my-c/cpp-mode-common-hook)
+
+(use-package clang-format)
+(defun clang-format-save-hook ()
+  (add-hook 'before-save-hook
+	    (lambda ()
+	      (when (locate-dominating-file "." ".clang-format")
+		(clang-format-buffer))
+	      nil)
+	    nil
+	    t))
+(add-hook 'c-mode-hook (lambda () (clang-format-save-hook)))
+(add-hook 'c++-mode-hook (lambda () (clang-format-save-hook)))
 
 ;; Go
 (use-package go-mode
@@ -74,8 +89,7 @@
 
 (use-package yasnippet
   :commands yas-minor-mode
-  :hook '((c++-mode . yas-minor-mode)
-          (go-mode . yas-minor-mode)
+  :hook '((go-mode . yas-minor-mode)
           (zig-mode . yas-minor-mode)))
 
 ;; Lua