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helm-cscope.el
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helm-cscope.el
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;;; helm-cscope.el --- Use xcscope with helm!
;; Authors: Hikaru Tooyama (http://github.com/vexus2/)
;; Sergey Pashaev <sergey.pashaev@gmail.com>
;; Maintainer: Sergey Pashaev <sergey.pashaev@gmail.com>
;; Created: 30th November 2013
;; Keywords: helm, cscope
;; 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 <http://www.gnu.org/licenses/>.
;;; Source code
;;
;; Source code can be found here:
;; http://github.com/sergey-pashaev/helm-cscope
;;; Commentary:
;;
;; This is pretty straightforward port of anything-cscope.el from:
;; https://github.com/vexus2/dotfiles/blob/master/.elisp/anything-cscope.el
;; So all credits goes to Mr. vexus2
;;; Usage:
;;
;; Put helm-cscope.el in your load path:
;; (add-to-list 'load-path "/<path to helm-cscope dir here>/")
;;
;; Add (require 'helm-cscope) to your .emacs
;;
;; Example configuration:
;; ;; Enable helm-cscope-mode
;; (add-hook 'c-mode-hook 'helm-cscope-mode)
;; (add-hook 'c++-mode-hook 'helm-cscope-mode)
;; ;; Set key bindings
;; (eval-after-load "helm-cscope"
;; '(progn
;; (define-key helm-cscope-mode-map (kbd "M-t") 'helm-cscope-find-symbol)
;; (define-key helm-cscope-mode-map (kbd "M-r") 'helm-cscope-find-global-definition)
;; (define-key helm-cscope-mode-map (kbd "M-g M-c") 'helm-cscope-find-called-function)
;; (define-key helm-cscope-mode-map (kbd "M-g M-p") 'helm-cscope-find-calling-this-funtcion)
;; (define-key helm-cscope-mode-map (kbd "M-s") 'helm-cscope-select)))
(require 'helm)
(require 'xcscope)
(defvar helm-cscope-db-directory nil)
(defvar helm-cscope-buffer-name "*helm cscope*")
(defvar helm-cscope-mode-name " Helm cscope")
(defvar helm-cscope-mode-map (make-sparse-keymap))
(defun helm-cscope-candidates (search-type-arg)
(let ((cscp-dir nil)
(base-database-file-name)
(next-item)
(options)
(cscope-directory)
(database-file)
(done)
)
(save-excursion
(with-current-buffer helm-current-buffer
(setq cscp-dir (cscope-canonicalize-directory
(or cscope-initial-directory default-directory)))
)
(setq default-directory cscp-dir
cscope-search-list (cscope-find-info cscp-dir)
cscope-searched-dirs nil
cscope-command-args (list search-type-arg (concat helm-pattern ".*"))
cscope-first-match nil
cscope-first-match-point nil
cscope-stop-at-first-match-dir-meta (memq t cscope-search-list)
)
(catch 'finished
(setq options '("-L"))
(while (and (not done) cscope-search-list)
(setq next-item (car cscope-search-list)
cscope-search-list (cdr cscope-search-list)
base-database-file-name cscope-database-file
)
(if (listp next-item)
(progn
(setq cscope-directory (car next-item))
(if (not (stringp cscope-directory))
(setq cscope-directory
(cscope-search-directory-hierarchy
default-directory)))
(if (file-regular-p cscope-directory)
(progn
;; Handle the case where `cscope-directory' is really
;; a full path name to a cscope database.
(setq base-database-file-name
(file-name-nondirectory cscope-directory)
cscope-directory
(file-name-directory cscope-directory))
))
(setq cscope-directory
(file-name-as-directory cscope-directory))
(if (not (member cscope-directory cscope-searched-dirs))
(progn
(setq cscope-searched-dirs (cons cscope-directory
cscope-searched-dirs)
done t)
))
)
(progn
(if (and cscope-first-match
cscope-stop-at-first-match-dir
cscope-stop-at-first-match-dir-meta)
(throw 'finished nil))
))
)
(if (not done)
(throw 'finished nil))
(if (car (cdr next-item))
(let (newopts)
(setq newopts (car (cdr next-item)))
(if (not (listp newopts))
(error (format "Cscope options must be a list: %s" newopts)))
(setq options (append options newopts))
))
(if cscope-command-args
(setq options (append options cscope-command-args)))
(setq database-file (concat cscope-directory base-database-file-name)
cscope-searched-dirs (cons cscope-directory
cscope-searched-dirs)
)
;; The database file and the directory containing the database file
;; must both be writable.
(if (or (not (file-writable-p database-file))
(not (file-writable-p (file-name-directory database-file)))
cscope-option-do-not-update-database)
(setq options (cons "-d" options)))
(setq options (cons base-database-file-name options))
(setq options (cons "-f" options))
(setq default-directory cscope-directory)
(setq helm-cscope-db-directory cscope-directory)
(setq options (cons cscope-program options))
(apply 'start-process (concat "helm-cscope" search-type-arg) nil
options)
))))
(defun helm-c-source-cscope-action (line)
(let* (
(lines (split-string line " "))
(file-name (car lines))
(line-number (string-to-number (car (cdr (cdr lines)))))
)
(find-file (if (file-name-absolute-p file-name)
file-name
(concat helm-cscope-db-directory file-name)))
(goto-line line-number)))
(defmacro helm-cscope--source (source-name arg)
`'((name . ,source-name)
(candidates-process . (lambda ()
(helm-cscope-candidates ,arg)))
(action . helm-c-source-cscope-action)
(delayed)))
;;;###autoload
(defun helm-cscope-select ()
(interactive)
(helm :sources (list
(helm-cscope--source "cscope : c-cymbol" "-0")
(helm-cscope--source "cscope : global definition" "-1")
(helm-cscope--source "cscope : called function" "-2")
(helm-cscope--source "cscope : calling this function" "-3")
)
:input (cscope-extract-symbol-at-cursor nil nil)
:buffer helm-cscope-buffer-name))
;;;###autoload
(defun helm-cscope-find-symbol ()
(interactive)
(helm :sources (list (helm-cscope--source "cscope : c-cymbol" "-0"))
:input (cscope-extract-symbol-at-cursor nil nil)
:buffer helm-cscope-buffer-name))
;; todo: fix action for this source. it creates empty file instead
;; openning existing
;;;###autoload
(defun helm-cscope-find-global-definition ()
(interactive)
(helm :sources (list (helm-cscope--source "cscope : global definition" "-1"))
:input (cscope-extract-symbol-at-cursor nil nil)
:buffer helm-cscope-buffer-name))
;;;###autoload
(defun helm-cscope-find-called-function ()
(interactive)
(helm :sources (list (helm-cscope--source "cscope : called function" "-2"))
:input (cscope-extract-symbol-at-cursor nil nil)
:buffer helm-cscope-buffer-name))
;;;###autoload
(defun helm-cscope-find-calling-this-funtcion ()
(interactive)
(helm :sources (list (helm-cscope--source "cscope : calling this function" "-3"))
:input (cscope-extract-symbol-at-cursor nil nil)
:buffer helm-cscope-buffer-name))
;;;###autoload
(define-minor-mode helm-cscope-mode ()
"Enable for helm-cscope"
:group 'helm-cscope
:init-value nil
:global nil
:keymap helm-cscope-mode-map
:lighter helm-cscope-mode-name
(if helm-cscope-mode
(run-hooks 'helm-cscope-mode-hook)))
(provide 'helm-cscope)
;;; helm-cscope.el ends here