;;; -*- emacs-lisp -*- ;;; ;;; ruby-style.el - ;;; ;;; C/C++ mode style for Ruby. ;;; ;;; $Author: nobu $ ;;; created at: Thu Apr 26 13:54:01 JST 2007 ;;; ;;; To switch to the "ruby" style automatically if it looks like a ;;; source file of ruby, add ruby-style-c-mode to c-mode-hook: ;;; ;;; (require 'ruby-style) ;;; (add-hook 'c-mode-hook 'ruby-style-c-mode) ;;; (add-hook 'c++-mode-hook 'ruby-style-c-mode) ;;; ;;; Customize the c-default-style variable to set the default style ;;; for each CC major mode. (defconst ruby-style-revision "$Revision: 30485 $" "Ruby style revision string.") (defconst ruby-style-version (and (string-match "[0-9.]+" ruby-style-revision) (substring ruby-style-revision (match-beginning 0) (match-end 0))) "Ruby style version number.") (defun ruby-style-case-indent (x) (save-excursion (back-to-indentation) (unless (progn (backward-up-list) (back-to-indentation) (> (point) (cdr x))) (goto-char (cdr x)) (if (looking-at "\\") '*)))) (defun ruby-style-label-indent (x) (save-excursion (back-to-indentation) (unless (progn (backward-up-list) (back-to-indentation) (>= (point) (cdr x))) (goto-char (cdr x)) (condition-case () (progn (backward-up-list) (backward-sexp 2) (if (looking-at "\\") '/)) (error))))) (require 'cc-styles) (c-add-style "ruby" '("bsd" (c-basic-offset . 4) (tab-width . 8) (indent-tabs-mode . t) (setq show-trailing-whitespace t) (c-offsets-alist (case-label . *) (label . (ruby-style-label-indent *)) (statement-case-intro . *) (statement-case-open . *) (statement-block-intro . (ruby-style-case-indent +)) (access-label /) ))) (defun ruby-style-c-mode () (interactive) (if (or (let ((name (buffer-file-name))) (and name (string-match "/ruby\\>" name))) (save-excursion (goto-char (point-min)) (let ((head (progn (forward-line 100) (point))) (case-fold-search nil)) (goto-char (point-min)) (re-search-forward "Copyright (C) .* Yukihiro Matsumoto" head t)))) (c-set-style "ruby"))) (provide 'ruby-style)