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authorChong Yidong <cyd@stupidchicken.com>2009-09-28 01:28:41 +0000
committerChong Yidong <cyd@stupidchicken.com>2009-09-28 01:28:41 +0000
commit666fd2cc6572fddd8a9a021b0359c651ac73a32d (patch)
tree147f72fea73e3d6325462ea1e6b1b1aded149be9 /lisp/cedet/cedet-global.el
parent748e162f10771f0482eaa29444a0d3e3ba738e98 (diff)
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* cedet/cedet-cscope.el:
* cedet/cedet-files.el: * cedet/cedet-global.el: * cedet/cedet-idutils.el: * cedet/data-debug.el: * cedet/inversion.el: * cedet/pulse.el: New files.
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diff --git a/lisp/cedet/cedet-global.el b/lisp/cedet/cedet-global.el
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+;;; cedet-global.el --- GNU Global support for CEDET.
+
+;; Copyright (C) 2008, 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:
+;;
+;; Basic support for calling GNU Global, and testing version numbers.
+
+(declare-function inversion-check-version "inversion")
+
+(defvar cedet-global-min-version "5.0"
+ "Minimum version of GNU global required.")
+
+(defcustom cedet-global-command "global"
+ "Command name for the GNU Global executable."
+ :type 'string
+ :group 'cedet)
+
+;;; Code:
+(defun cedet-gnu-global-search (searchtext texttype type scope)
+ "Perform a search with GNU Global, return the created buffer.
+SEARCHTEXT is text to find.
+TEXTTYPE is the type of text, such as 'regexp, 'string, 'tagname,
+'tagregexp, or 'tagcompletions.
+TYPE is the type of search, meaning that SEARCHTEXT is compared to
+filename, tagname (tags table), references (uses of a tag) , or
+symbol (uses of something not in the tag table.)
+SCOPE is the scope of the search, such as 'project or 'subdirs."
+ (let ((flgs (cond ((eq type 'file)
+ "-a")
+ (t "-xa")))
+ (scopeflgs (cond
+ ((eq scope 'project)
+ ""
+ )
+ ((eq scope 'target)
+ "l")))
+ (stflag (cond ((or (eq texttype 'tagname)
+ (eq texttype 'tagregexp))
+ "")
+ ((eq texttype 'tagcompletions)
+ "c")
+ ((eq texttype 'regexp)
+ "g")
+ (t "r"))))
+ (cedet-gnu-global-call (list (concat flgs scopeflgs stflag)
+ searchtext))))
+
+(defun cedet-gnu-global-call (flags)
+ "Call GNU Global with the list of FLAGS."
+ (let ((b (get-buffer-create "*CEDET Global*"))
+ (cd default-directory))
+ (save-excursion
+ (set-buffer b)
+ (setq default-directory cd)
+ (erase-buffer))
+ (apply 'call-process cedet-global-command
+ nil b nil
+ flags)
+ b))
+
+(defun cedet-gnu-global-expand-filename (filename)
+ "Expand the FILENAME with GNU Global.
+Return a fully qualified filename."
+ (interactive "sFile: ")
+ (let ((ans (save-excursion
+ (set-buffer (cedet-gnu-global-call (list "-Pa" filename)))
+ (goto-char (point-min))
+ (if (looking-at "global: ")
+ (error "GNU Global not available")
+ (split-string (buffer-string) "\n" t)))))
+ (when (interactive-p)
+ (if ans
+ (if (= (length ans) 1)
+ (message "%s" (car ans))
+ (message "%s + %d others" (car ans)
+ (length (cdr ans))))
+ (error "No file found")))
+ ans))
+
+(defun cedet-gnu-global-show-root ()
+ "Show the root of a GNU Global area under the current buffer."
+ (interactive)
+ (message "%s" (cedet-gnu-global-root)))
+
+(defun cedet-gnu-global-root (&optional dir)
+ "Return the root of any GNU Global scanned project.
+If a default starting DIR is not specified, the current buffer's
+`default-directory' is used."
+ (let ((default-directory (or dir default-directory)))
+ (save-excursion
+ (set-buffer (cedet-gnu-global-call (list "-pq")))
+ (goto-char (point-min))
+ (when (not (eobp))
+ (file-name-as-directory
+ (buffer-substring (point) (point-at-eol)))))))
+
+(defun cedet-gnu-global-version-check (&optional noerror)
+ "Check the version of the installed GNU Global command.
+If optional programatic argument NOERROR is non-nil, then
+instead of throwing an error if Global isn't available, then
+return nil."
+ (interactive)
+ (require 'inversion)
+ (let ((b (condition-case nil
+ (cedet-gnu-global-call (list "--version"))
+ (error nil)))
+ (rev nil))
+ (if (not b)
+ (progn
+ (when (interactive-p)
+ (message "GNU Global not found."))
+ nil)
+ (save-excursion
+ (set-buffer b)
+ (goto-char (point-min))
+ (re-search-forward "GNU GLOBAL \\([0-9.]+\\)" nil t)
+ (setq rev (match-string 1))
+ (if (inversion-check-version rev nil cedet-global-min-version)
+ (if noerror
+ nil
+ (error "Version of GNU Global is %s. Need at least %s"
+ rev cedet-global-min-version))
+ ;; Else, return TRUE, as in good enough.
+ (when (interactive-p)
+ (message "GNU Global %s - Good enough for CEDET." rev))
+ t)))))
+
+(defun cedet-gnu-global-scan-hits (buffer)
+ "Scan all the hits from the GNU Global output BUFFER."
+ (let ((hits nil)
+ (r1 "^\\([^ ]+\\) +\\([0-9]+\\) \\([^ ]+\\) "))
+ (save-excursion
+ (set-buffer buffer)
+ (goto-char (point-min))
+ (while (re-search-forward r1 nil t)
+ (setq hits (cons (cons (string-to-number (match-string 2))
+ (match-string 3))
+ hits)))
+ ;; Return the results
+ (nreverse hits))))
+
+(provide 'cedet-global)
+
+;;; cedet-global.el ends here