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name: lisp/cedet/ede/util.el 	 # note: path name is non-authoritative(*)

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;;; ede/util.el --- EDE utilities

;; Copyright (C) 2000, 2005, 2009-2020 Free Software Foundation, Inc.

;; Author: Eric M. Ludlam <zappo@gnu.org>
;; Keywords: project, make

;; 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 <https://www.gnu.org/licenses/>.

;;; Commentary:
;;
;; Utilities that may not require project specific help, and operate
;; on generic EDE structures.  Provide user level commands for activities
;; not directly related to source code organization or makefile generation.

(require 'ede)

;;; Code:

;;; Updating the version of a project.
;;;###autoload
(defun ede-update-version (newversion)
  "Update the current projects main version number.
Argument NEWVERSION is the version number to use in the current project."
  (interactive (list (let* ((o (ede-toplevel))
			    (v (oref o version)))
		       (read-string (format "Update Version (was %s): " v)
				  v nil v))))
  (let ((ede-object (ede-toplevel)))
    ;; Don't update anything if there was no change.
    (unless (string= (oref ede-object version) newversion)
      (oset ede-object version newversion)
      (project-update-version ede-object)
      (ede-update-version-in-source ede-object newversion))))

(cl-defmethod project-update-version ((ot ede-project))
  "The :version of the project OT has been updated.
Handle saving, or other detail."
  (error "project-update-version not supported by %s" (eieio-object-name ot)))

(cl-defmethod ede-update-version-in-source ((this ede-project) version)
  "Change occurrences of a version string in sources.
In project THIS, cycle over all targets to give them a chance to set
their sources to VERSION."
  (ede-map-targets this (lambda (targ)
			  (ede-update-version-in-source targ version))))

(cl-defmethod ede-update-version-in-source ((this ede-target) version)
  "In sources for THIS, change version numbers to VERSION."
  (if (and (slot-boundp this 'versionsource)
	   (oref this versionsource))
      (let ((vs (oref this versionsource)))
	(while vs
	  (with-current-buffer (find-file-noselect
                                (ede-expand-filename this (car vs)))
	    (goto-char (point-min))
	    (let ((case-fold-search t))
	      (if (re-search-forward "version:\\s-*\\([^ \t\n]+\\)" nil t)
		  (progn
		    (save-match-data
		      (ede-make-buffer-writable))
		    (delete-region (match-beginning 1)
				   (match-end 1))
		    (goto-char (match-beginning 1))
		    (insert version)))))
	  (setq vs (cdr vs))))))

;;; Writable files
;;
;; Utils for EDE when it needs to write a file that could be covered by a
;; version control system.
(defun ede-make-buffer-writable (&optional buffer)
  "Make sure that BUFFER is writable.
If BUFFER isn't specified, use the current buffer."
  (save-excursion
    (if buffer (set-buffer buffer))
    (setq buffer-read-only nil)))

(provide 'ede/util)

;; Local variables:
;; generated-autoload-file: "loaddefs.el"
;; generated-autoload-load-name: "ede/util"
;; End:

;;; ede/util.el ends here

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