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+;;; semantic/symref/cscope.el --- Semantic-symref support via cscope.
+
+;;; Copyright (C) 2009 Free Software Foundation, Inc.
+
+;; Author: Eric M. Ludlam <eric@siege-engine.com>
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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.
+
+;; GNU Emacs 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 GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+;;
+;; Semantic symref support via cscope.
+
+(require 'cedet-cscope)
+(require 'semantic/symref)
+
+(defvar ede-minor-mode)
+(declare-function ede-toplevel "ede/files")
+(declare-function ede-project-root-directory "ede/files")
+
+;;; Code:
+;;;###autoload
+(defclass semantic-symref-tool-cscope (semantic-symref-tool-baseclass)
+  (
+   )
+  "A symref tool implementation using CScope.
+The CScope command can be used to generate lists of tags in a way
+similar to that of `grep'.  This tool will parse the output to generate
+the hit list.
+
+See the function `cedet-cscope-search' for more details.")
+
+(defmethod semantic-symref-perform-search ((tool semantic-symref-tool-cscope))
+  "Perform a search with GNU Global."
+  (let* ((rootproj (when (and (featurep 'ede) ede-minor-mode)
+		     (ede-toplevel)))
+	 (default-directory (if rootproj
+				(ede-project-root-directory rootproj)
+			      default-directory))
+	 ;; CScope has to be run from the project root where
+	 ;; cscope.out is.
+	 (b (cedet-cscope-search (oref tool :searchfor)
+				 (oref tool :searchtype)
+				 (oref tool :resulttype)
+				 (oref tool :searchscope)
+				 ))
+	)
+    (semantic-symref-parse-tool-output tool b)
+    ))
+
+(defmethod semantic-symref-parse-tool-output-one-line ((tool semantic-symref-tool-cscope))
+  "Parse one line of grep output, and return it as a match list.
+Moves cursor to end of the match."
+  (cond ((eq (oref tool :resulttype) 'file)
+	 ;; Search for files
+	 (when (re-search-forward "^\\([^\n]+\\)$" nil t)
+	   (match-string 1)))
+	((eq (oref tool :searchtype) 'tagcompletions)
+	 ;; Search for files
+	 (when (re-search-forward "^[^ ]+ [^ ]+ [^ ]+ \\(.*\\)$" nil t)
+	   (let ((subtxt (match-string 1))
+		 (searchtxt (oref tool :searchfor)))
+	     (if (string-match (concat "\\<" searchtxt "\\(\\w\\|\\s_\\)*\\>")
+			       subtxt)
+		 (match-string 0 subtxt)
+	       ;; We have to return something at this point.
+	       subtxt)))
+	 )
+	(t
+	 (when (re-search-forward "^\\([^ ]+\\) [^ ]+ \\([0-9]+\\) " nil t)
+	   (cons (string-to-number (match-string 2))
+		 (expand-file-name (match-string 1)))
+	   ))))
+
+(provide 'semantic/symref/cscope)
+
+;; Local variables:
+;; generated-autoload-file: "../loaddefs.el"
+;; generated-autoload-feature: semantic/loaddefs
+;; generated-autoload-load-name: "semantic/symref/cscope"
+;; End:
+
+;;; semantic/symref/cscope.el ends here