From 43139e7a24b3e917e922f430fc53b3c29ba0a76d Mon Sep 17 00:00:00 2001
From: laurensmiers <miers132@gmail.com>
Date: Tue, 5 Dec 2017 12:34:01 +0100
Subject: [PATCH] Setup ggtags

---
 custom/setup-gtags.el      | 38 ++++++++++----------------------------
 custom/setup-helm-gtags.el |  8 --------
 2 files changed, 10 insertions(+), 36 deletions(-)

diff --git a/custom/setup-gtags.el b/custom/setup-gtags.el
index c3a394d..3ea2ef1 100644
--- a/custom/setup-gtags.el
+++ b/custom/setup-gtags.el
@@ -1,33 +1,15 @@
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
-;; Incremental updates to GTAGS table                     ;;
-;; To keep the changes we did in source code synchronized ;;
-;; in the gtags database                                  ;;
-;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
+(require 'ggtags)
 
-(defun gtags-root-dir ()
-  "Returns GTAGS root directory or nil if doesn't exist."
-  (with-temp-buffer
-    (if (zerop (call-process "global" nil t nil "-pr"))
-	(buffer-substring (point-min) (1- (point-max)))
-      nil)))
+;; Update on save of file
+(setq ggtags-update-on-save t)
 
-(defun gtags-update-single(filename)
-  "Update Gtags database for changes in a single file"
-  (interactive)
-    (start-process "update-gtags" "update-gtags" "bash" "-c" (concat "cd " (gtags-root-dir) " ; gtags --single-update " filename )))
+;; Enable async update
+(setq ggtags-oversize-limit t)
 
-(defun gtags-update-current-file()
-  (interactive)
-  (defvar filename)
-  (setq filename (replace-regexp-in-string (gtags-root-dir) "." (buffer-file-name (current-buffer))))
-  (gtags-update-single filename)
-  (message "Gtags updated for %s" filename))
-
-(defun gtags-update-hook()
-  "Update GTAGS file incrementally upon saving a file"
-  (when (gtags-root-dir)
-    (gtags-update-current-file)))
-
-(add-hook 'after-save-hook 'gtags-update-hook)
+;; Enable ggtags-mode
+(add-hook 'c-mode-common-hook
+          (lambda ()
+            (when (derived-mode-p 'c-mode 'c++-mode 'python-mode 'java-mode 'asm-mode)
+              (ggtags-mode 1))))
 
 (provide 'setup-gtags)
diff --git a/custom/setup-helm-gtags.el b/custom/setup-helm-gtags.el
index 9372ca3..46988fd 100644
--- a/custom/setup-helm-gtags.el
+++ b/custom/setup-helm-gtags.el
@@ -7,12 +7,4 @@
 (add-hook 'java-mode-hook 'helm-gtags-mode)
 (add-hook 'asm-mode-hook 'helm-gtags-mode)
 
-;; key bindings
-(define-key helm-gtags-mode-map (kbd "C-j") 'helm-gtags-select) ; Find tag from here
-(define-key helm-gtags-mode-map (kbd "M-.") 'helm-gtags-dwim)	; Find by context (inc, ...)
-(define-key helm-gtags-mode-map (kbd "M-,") 'helm-gtags-pop-stack)
-(define-key helm-gtags-mode-map (kbd "C-c <") 'helm-gtags-previous-history)
-(define-key helm-gtags-mode-map (kbd "C-c >") 'helm-gtags-next-history)
-
-
 (provide 'setup-helm-gtags)