emacs/05ctags.el

58 lines
1.9 KiB
EmacsLisp

;;; 05ctags -- summary
;;; Commentary:
;;; Old and rudimental completion framework.
;;; Code:
(require 'projectile)
;; Do not mix ctags between folders
(provide 'my-ctags-config)
(setq tags-add-tables nil)
(defvar ctags/refresh-command
(format "ctags -e -R -f %sTAGS %s."
default-directory default-directory))
;; Sentinel function for capturing ctags
(defun ctags/process-callback (process event)
"Show status of asynchronous ctags PROCESS after it send finished EVENT."
(cond
((string-equal event "finished\n")
(message "Creating tag files...completed")
(kill-buffer (get-buffer "*ctags*"))
(visit-tags-table (format "%sTAGS" (projectile-project-root))))
(t
(message "Creating tags file...failed")
(pop-to-buffer (get-buffer "*ctags*"))
)))
(cl-defun ctags/refresh-ctags (&key silent)
"Refresh ctags according to currently set command."
(interactive)
;; Print message if not silent
(when (not silent) (message "Starting ctags process..."))
;; Return if a version of the process is already running
(when (not (get-process "ctags"))
(start-process-shell-command "ctags" "*ctags*" ctags/refresh-command)
(set-process-sentinel (get-process "ctags") 'ctags/process-callback)))
;; Ctags bindings
(define-key prog-mode-map (kbd "C-c E") 'ctags/refresh-ctags)
;; Automatically update tags on save, but be silent about it.
(defvar ctags/major-modes-to-update-on-save '())
(defun ctags/update-tags-on-save ()
"Update tags if current major mode is part of the list."
(interactive)
(when (member major-mode ctags/major-modes-to-update-on-save)
(ctags/refresh-ctags :silent t)))
(defun ctags/update-this-mode-on-save (mode)
"Update MODE on save."
(add-to-list (make-local-variable 'ctags/major-modes-to-update-on-save) mode))
(add-hook 'after-save-hook 'ctags/update-tags-on-save)
(provide '05ctags)
;;; 05ctags.el ends here