;;; vc-rcs.el --- support for RCS version-control
-;; Copyright (C) 1992,93,94,95,96,97,98,99,2000 Free Software Foundation, Inc.
+;; Copyright (C) 1992,93,94,95,96,97,98,99,2000,2001 Free Software Foundation, Inc.
;; Author: FSF (see vc.el for full credits)
;; Maintainer: Andre Spiegel <spiegel@gnu.org>
-;; $Id: vc-rcs.el,v 1.2 2000/09/05 20:08:21 monnier Exp $
+;; $Id: vc-rcs.el,v 1.35 2003/01/07 08:28:15 spiegel Exp $
;; This file is part of GNU Emacs.
;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
-;;; Commentary: see vc.el
+;;; Commentary:
+
+;; See vc.el
;;; Code:
+;;;
+;;; Customization options
+;;;
+
+(eval-when-compile
+ (require 'cl)
+ (require 'vc))
+
(defcustom vc-rcs-release nil
"*The release number of your RCS installation, as a string.
If nil, VC itself computes this value when it is first needed."
:version "21.1"
:group 'vc)
-(defcustom vc-rcs-checkin-switches nil
- "*A string or list of strings specifying extra switches for RCS checkin.
-These are passed to the checkin program by \\[vc-rcs-checkin]."
- :type '(choice (const :tag "None" nil)
- (string :tag "Argument String")
- (repeat :tag "Argument List"
- :value ("")
- string))
- :version "21.1"
- :group 'vc)
-
-(defcustom vc-rcs-checkout-switches nil
- "*A string or list of strings specifying extra switches for RCS checkout.
-These are passed to the checkout program by \\[vc-rcs-checkout]."
+(defcustom vc-rcs-diff-switches nil
+ "*A string or list of strings specifying extra switches for rcsdiff under VC."
:type '(choice (const :tag "None" nil)
(string :tag "Argument String")
(repeat :tag "Argument List"
(defcustom vc-rcs-header (or (cdr (assoc 'RCS vc-header-alist)) '("\$Id\$"))
"*Header keywords to be inserted by `vc-insert-headers'."
- :type 'string
+ :type '(repeat string)
:version "21.1"
:group 'vc)
:version "21.1"
:group 'vc)
-;;;###autoload
-(progn (defun vc-rcs-registered (f) (vc-default-registered 'RCS f)))
+\f
+;;;
+;;; State-querying functions
+;;;
+
+;;; The autoload cookie below places vc-rcs-registered directly into
+;;; loaddefs.el, so that vc-rcs.el does not need to be loaded for
+;;; every file that is visited. The definition is repeated below
+;;; so that Help and etags can find it.
+
+;;;###autoload (defun vc-rcs-registered (f) (vc-default-registered 'RCS f))
+(defun vc-rcs-registered (f) (vc-default-registered 'RCS f))
(defun vc-rcs-state (file)
"Implementation of `vc-state' for RCS."
(vc-rcs-fetch-master-state file
(vc-file-getprop file
'vc-workfile-version))))
- (if (eq state 'up-to-date)
- (if (vc-workfile-unchanged-p file)
- 'up-to-date
- 'unlocked-changes)
- state)))
+ (if (not (eq state 'up-to-date))
+ state
+ (if (vc-workfile-unchanged-p file)
+ 'up-to-date
+ (if (eq (vc-checkout-model file) 'locking)
+ 'unlocked-changes
+ 'edited)))))
(defun vc-rcs-state-heuristic (file)
"State heuristic for RCS."
(not (vc-mistrust-permissions file)))
(cond
((string-match ".rw..-..-." (nth 8 (file-attributes file)))
- (vc-file-setprop file 'vc-checkout-model 'implicit))
+ (vc-file-setprop file 'vc-checkout-model 'implicit)
+ (setq state
+ (if (vc-rcs-workfile-is-newer file)
+ 'edited
+ 'up-to-date)))
((string-match ".r-..-..-." (nth 8 (file-attributes file)))
(vc-file-setprop file 'vc-checkout-model 'locking))))
state)
(vc-file-setprop file 'vc-checkout-model 'locking)
'up-to-date)
((string-match ".rw..-..-." permissions)
- (if (file-ownership-preserved-p file)
- 'edited
- (vc-user-login-name owner-uid)))
+ (if (eq (vc-checkout-model file) 'locking)
+ (if (file-ownership-preserved-p file)
+ 'edited
+ (vc-user-login-name owner-uid))
+ (if (vc-rcs-workfile-is-newer file)
+ 'edited
+ 'up-to-date)))
(t
;; Strange permissions. Fall through to
;; expensive state computation.
(vc-rcs-fetch-master-state file)
(vc-file-getprop file 'vc-workfile-version))))
+(defun vc-rcs-latest-on-branch-p (file &optional version)
+ "Return non-nil if workfile version of FILE is the latest on its branch.
+When VERSION is given, perform check for that version."
+ (unless version (setq version (vc-workfile-version file)))
+ (with-temp-buffer
+ (string= version
+ (if (vc-trunk-p version)
+ (progn
+ ;; Compare VERSION to the head version number.
+ (vc-insert-file (vc-name file) "^[0-9]")
+ (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1))
+ ;; If we are not on the trunk, we need to examine the
+ ;; whole current branch.
+ (vc-insert-file (vc-name file) "^desc")
+ (vc-rcs-find-most-recent-rev (vc-branch-part version))))))
+
(defun vc-rcs-checkout-model (file)
"RCS-specific version of `vc-checkout-model'."
(vc-rcs-consult-headers file)
(progn (vc-rcs-fetch-master-state file)
(vc-file-getprop file 'vc-checkout-model))))
-;;; internal code
+(defun vc-rcs-workfile-unchanged-p (file)
+ "RCS-specific implementation of vc-workfile-unchanged-p."
+ ;; Try to use rcsdiff --brief. If rcsdiff does not understand that,
+ ;; do a double take and remember the fact for the future
+ (let* ((version (concat "-r" (vc-workfile-version file)))
+ (status (if (eq vc-rcsdiff-knows-brief 'no)
+ (vc-do-command nil 1 "rcsdiff" file version)
+ (vc-do-command nil 2 "rcsdiff" file "--brief" version))))
+ (if (eq status 2)
+ (if (not vc-rcsdiff-knows-brief)
+ (setq vc-rcsdiff-knows-brief 'no
+ status (vc-do-command nil 1 "rcsdiff" file version))
+ (error "rcsdiff failed"))
+ (if (not vc-rcsdiff-knows-brief) (setq vc-rcsdiff-knows-brief 'yes)))
+ ;; The workfile is unchanged if rcsdiff found no differences.
+ (zerop status)))
+
+\f
+;;;
+;;; State-changing functions
+;;;
+
+(defun vc-rcs-register (file &optional rev comment)
+ "Register FILE into the RCS version-control system.
+REV is the optional revision number for the file. COMMENT can be used
+to provide an initial description of FILE.
+
+`vc-register-switches' and `vc-rcs-register-switches' are passed to
+the RCS command (in that order).
+
+Automatically retrieve a read-only version of the file with keywords
+expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
+ (let ((subdir (expand-file-name "RCS" (file-name-directory file)))
+ (switches (append
+ (if (stringp vc-register-switches)
+ (list vc-register-switches)
+ vc-register-switches)
+ (if (stringp vc-rcs-register-switches)
+ (list vc-rcs-register-switches)
+ vc-rcs-register-switches))))
+
+ (and (not (file-exists-p subdir))
+ (not (directory-files (file-name-directory file)
+ nil ".*,v$" t))
+ (yes-or-no-p "Create RCS subdirectory? ")
+ (make-directory subdir))
+ (apply 'vc-do-command nil 0 "ci" file
+ ;; if available, use the secure registering option
+ (and (vc-rcs-release-p "5.6.4") "-i")
+ (concat (if vc-keep-workfiles "-u" "-r") rev)
+ (and comment (concat "-t-" comment))
+ switches)
+ ;; parse output to find master file name and workfile version
+ (with-current-buffer "*vc*"
+ (goto-char (point-min))
+ (let ((name (if (looking-at (concat "^\\(.*\\) <-- "
+ (file-name-nondirectory file)))
+ (match-string 1))))
+ (if (not name)
+ ;; if we couldn't find the master name,
+ ;; run vc-rcs-registered to get it
+ ;; (will be stored into the vc-name property)
+ (vc-rcs-registered file)
+ (vc-file-setprop file 'vc-name
+ (if (file-name-absolute-p name)
+ name
+ (expand-file-name
+ name
+ (file-name-directory file))))))
+ (vc-file-setprop file 'vc-workfile-version
+ (if (re-search-forward
+ "^initial revision: \\([0-9.]+\\).*\n"
+ nil t)
+ (match-string 1))))))
+
+(defun vc-rcs-responsible-p (file)
+ "Return non-nil if RCS thinks it would be responsible for registering FILE."
+ ;; TODO: check for all the patterns in vc-rcs-master-templates
+ (file-directory-p (expand-file-name "RCS" (file-name-directory file))))
+
+(defun vc-rcs-receive-file (file rev)
+ "Implementation of receive-file for RCS."
+ (let ((checkout-model (vc-checkout-model file)))
+ (vc-rcs-register file rev "")
+ (when (eq checkout-model 'implicit)
+ (vc-rcs-set-non-strict-locking file))
+ (vc-rcs-set-default-branch file (concat rev ".1"))))
+
+(defun vc-rcs-unregister (file)
+ "Unregister FILE from RCS.
+If this leaves the RCS subdirectory empty, ask the user
+whether to remove it."
+ (let* ((master (vc-name file))
+ (dir (file-name-directory master))
+ (backup-info (find-backup-file-name master)))
+ (if (not backup-info)
+ (delete-file master)
+ (rename-file master (car backup-info) 'ok-if-already-exists)
+ (dolist (f (cdr backup-info)) (ignore-errors (delete-file f))))
+ (and (string= (file-name-nondirectory (directory-file-name dir)) "RCS")
+ ;; check whether RCS dir is empty, i.e. it does not
+ ;; contain any files except "." and ".."
+ (not (directory-files dir nil
+ "^\\([^.]\\|\\.[^.]\\|\\.\\.[^.]\\).*"))
+ (yes-or-no-p (format "Directory %s is empty; remove it? " dir))
+ (delete-directory dir))))
+
+(defun vc-rcs-checkin (file rev comment)
+ "RCS-specific version of `vc-backend-checkin'."
+ (let ((switches (if (stringp vc-checkin-switches)
+ (list vc-checkin-switches)
+ vc-checkin-switches)))
+ (let ((old-version (vc-workfile-version file)) new-version
+ (default-branch (vc-file-getprop file 'vc-rcs-default-branch)))
+ ;; Force branch creation if an appropriate
+ ;; default branch has been set.
+ (and (not rev)
+ default-branch
+ (string-match (concat "^" (regexp-quote old-version) "\\.")
+ default-branch)
+ (setq rev default-branch)
+ (setq switches (cons "-f" switches)))
+ (if (and (not rev) old-version)
+ (setq rev (vc-branch-part old-version)))
+ (apply 'vc-do-command nil 0 "ci" (vc-name file)
+ ;; if available, use the secure check-in option
+ (and (vc-rcs-release-p "5.6.4") "-j")
+ (concat (if vc-keep-workfiles "-u" "-r") rev)
+ (concat "-m" comment)
+ switches)
+ (vc-file-setprop file 'vc-workfile-version nil)
+
+ ;; determine the new workfile version
+ (set-buffer "*vc*")
+ (goto-char (point-min))
+ (when (or (re-search-forward
+ "new revision: \\([0-9.]+\\);" nil t)
+ (re-search-forward
+ "reverting to previous revision \\([0-9.]+\\)" nil t))
+ (setq new-version (match-string 1))
+ (vc-file-setprop file 'vc-workfile-version new-version))
+
+ ;; if we got to a different branch, adjust the default
+ ;; branch accordingly
+ (cond
+ ((and old-version new-version
+ (not (string= (vc-branch-part old-version)
+ (vc-branch-part new-version))))
+ (vc-rcs-set-default-branch file
+ (if (vc-trunk-p new-version) nil
+ (vc-branch-part new-version)))
+ ;; If this is an old RCS release, we might have
+ ;; to remove a remaining lock.
+ (if (not (vc-rcs-release-p "5.6.2"))
+ ;; exit status of 1 is also accepted.
+ ;; It means that the lock was removed before.
+ (vc-do-command nil 1 "rcs" (vc-name file)
+ (concat "-u" old-version))))))))
+
+(defun vc-rcs-find-version (file rev buffer)
+ (apply 'vc-do-command
+ buffer 0 "co" (vc-name file)
+ "-q" ;; suppress diagnostic output
+ (concat "-p" rev)
+ (if (stringp vc-checkout-switches)
+ (list vc-checkout-switches)
+ vc-checkout-switches)))
+
+(defun vc-rcs-checkout (file &optional editable rev)
+ "Retrieve a copy of a saved version of FILE."
+ (let ((file-buffer (get-file-buffer file))
+ switches)
+ (message "Checking out %s..." file)
+ (save-excursion
+ ;; Change buffers to get local value of vc-checkout-switches.
+ (if file-buffer (set-buffer file-buffer))
+ (setq switches (if (stringp vc-checkout-switches)
+ (list vc-checkout-switches)
+ vc-checkout-switches))
+ ;; Save this buffer's default-directory
+ ;; and use save-excursion to make sure it is restored
+ ;; in the same buffer it was saved in.
+ (let ((default-directory default-directory))
+ (save-excursion
+ ;; Adjust the default-directory so that the check-out creates
+ ;; the file in the right place.
+ (setq default-directory (file-name-directory file))
+ (let (new-version)
+ ;; if we should go to the head of the trunk,
+ ;; clear the default branch first
+ (and rev (string= rev "")
+ (vc-rcs-set-default-branch file nil))
+ ;; now do the checkout
+ (apply 'vc-do-command
+ nil 0 "co" (vc-name file)
+ ;; If locking is not strict, force to overwrite
+ ;; the writable workfile.
+ (if (eq (vc-checkout-model file) 'implicit) "-f")
+ (if editable "-l")
+ (if (stringp rev)
+ ;; a literal revision was specified
+ (concat "-r" rev)
+ (let ((workrev (vc-workfile-version file)))
+ (if workrev
+ (concat "-r"
+ (if (not rev)
+ ;; no revision specified:
+ ;; use current workfile version
+ workrev
+ ;; REV is t ...
+ (if (not (vc-trunk-p workrev))
+ ;; ... go to head of current branch
+ (vc-branch-part workrev)
+ ;; ... go to head of trunk
+ (vc-rcs-set-default-branch file
+ nil)
+ ""))))))
+ switches)
+ ;; determine the new workfile version
+ (with-current-buffer "*vc*"
+ (setq new-version
+ (vc-parse-buffer "^revision \\([0-9.]+\\).*\n" 1)))
+ (vc-file-setprop file 'vc-workfile-version new-version)
+ ;; if necessary, adjust the default branch
+ (and rev (not (string= rev ""))
+ (vc-rcs-set-default-branch
+ file
+ (if (vc-rcs-latest-on-branch-p file new-version)
+ (if (vc-trunk-p new-version) nil
+ (vc-branch-part new-version))
+ new-version)))))
+ (message "Checking out %s...done" file)))))
+
+(defun vc-rcs-revert (file &optional contents-done)
+ "Revert FILE to the version it was based on."
+ (vc-do-command nil 0 "co" (vc-name file) "-f"
+ (concat (if (eq (vc-state file) 'edited) "-u" "-r")
+ (vc-workfile-version file))))
+
+(defun vc-rcs-cancel-version (file editable)
+ "Undo the most recent checkin of FILE.
+EDITABLE non-nil means previous version should be locked."
+ (let* ((target (vc-workfile-version file))
+ (previous (if (vc-trunk-p target) "" (vc-branch-part target)))
+ (config (current-window-configuration))
+ (done nil))
+ (vc-do-command nil 0 "rcs" (vc-name file) (concat "-o" target))
+ ;; Check out the most recent remaining version. If it fails, because
+ ;; the whole branch got deleted, do a double-take and check out the
+ ;; version where the branch started.
+ (while (not done)
+ (condition-case err
+ (progn
+ (vc-do-command nil 0 "co" (vc-name file) "-f"
+ (concat (if editable "-l" "-u") previous))
+ (setq done t))
+ (error (set-buffer "*vc*")
+ (goto-char (point-min))
+ (if (search-forward "no side branches present for" nil t)
+ (progn (setq previous (vc-branch-part previous))
+ (vc-rcs-set-default-branch file previous)
+ ;; vc-do-command popped up a window with
+ ;; the error message. Get rid of it, by
+ ;; restoring the old window configuration.
+ (set-window-configuration config))
+ ;; No, it was some other error: re-signal it.
+ (signal (car err) (cdr err))))))))
+
+(defun vc-rcs-merge (file first-version &optional second-version)
+ "Merge changes into current working copy of FILE.
+The changes are between FIRST-VERSION and SECOND-VERSION."
+ (vc-do-command nil 1 "rcsmerge" (vc-name file)
+ "-kk" ; ignore keyword conflicts
+ (concat "-r" first-version)
+ (if second-version (concat "-r" second-version))))
+
+(defun vc-rcs-steal-lock (file &optional rev)
+ "Steal the lock on the current workfile for FILE and revision REV.
+Needs RCS 5.6.2 or later for -M."
+ (vc-do-command nil 0 "rcs" (vc-name file) "-M" (concat "-u" rev))
+ ;; Do a real checkout after stealing the lock, so that we see
+ ;; expanded headers.
+ (vc-do-command nil 0 "co" (vc-name file) "-f" (concat "-l" rev)))
+
+
+\f
+;;;
+;;; History functions
+;;;
+
+(defun vc-rcs-print-log (file)
+ "Get change log associated with FILE."
+ (vc-do-command nil 0 "rlog" (vc-name file)))
+
+(defun vc-rcs-diff (file &optional oldvers newvers)
+ "Get a difference report using RCS between two versions of FILE."
+ (if (not oldvers) (setq oldvers (vc-workfile-version file)))
+ (apply 'vc-do-command "*vc-diff*" 1 "rcsdiff" file
+ (append (list "-q"
+ (concat "-r" oldvers)
+ (and newvers (concat "-r" newvers)))
+ (vc-diff-switches-list 'RCS))))
+
+\f
+;;;
+;;; Snapshot system
+;;;
+
+(defun vc-rcs-assign-name (file name)
+ "Assign to FILE's latest version a given NAME."
+ (vc-do-command nil 0 "rcs" (vc-name file) (concat "-n" name ":")))
+
+\f
+;;;
+;;; Miscellaneous
+;;;
+
+(defun vc-rcs-check-headers ()
+ "Check if the current file has any headers in it."
+ (save-excursion
+ (goto-char (point-min))
+ (re-search-forward "\\$[A-Za-z\300-\326\330-\366\370-\377]+\
+\\(: [\t -#%-\176\240-\377]*\\)?\\$" nil t)))
+
+(defun vc-rcs-clear-headers ()
+ "Implementation of vc-clear-headers for RCS."
+ (let ((case-fold-search nil))
+ (goto-char (point-min))
+ (while (re-search-forward
+ (concat "\\$\\(Author\\|Date\\|Header\\|Id\\|Locker\\|Name\\|"
+ "RCSfile\\|Revision\\|Source\\|State\\): [^$\n]+\\$")
+ nil t)
+ (replace-match "$\\1$"))))
+
+(defun vc-rcs-rename-file (old new)
+ ;; Just move the master file (using vc-rcs-master-templates).
+ (vc-rename-master (vc-name old) new vc-rcs-master-templates))
+
+\f
+;;;
+;;; Internal functions
+;;;
+
+(defun vc-rcs-workfile-is-newer (file)
+ "Return non-nil if FILE is newer than its RCS master.
+This likely means that FILE has been changed with respect
+to its master version."
+ (let ((file-time (nth 5 (file-attributes file)))
+ (master-time (nth 5 (file-attributes (vc-name file)))))
+ (or (> (nth 0 file-time) (nth 0 master-time))
+ (and (= (nth 0 file-time) (nth 0 master-time))
+ (> (nth 1 file-time) (nth 1 master-time))))))
(defun vc-rcs-find-most-recent-rev (branch)
"Find most recent revision on BRANCH."
(when (< latest-rev rev)
(setq latest-rev rev)
(setq value (match-string 1)))))
- value))
+ (or value
+ (vc-branch-part branch))))
(defun vc-rcs-fetch-master-state (file &optional workfile-version)
"Compute the master file's idea of the state of FILE.
`vc-checkout-model' to their correct values, based on the master
file."
(with-temp-buffer
- (vc-insert-file (vc-name file) "^[0-9]")
- (let ((workfile-is-latest nil))
+ (if (or (not (vc-insert-file (vc-name file) "^[0-9]"))
+ (progn (goto-char (point-min))
+ (not (looking-at "^head[ \t\n]+[^;]+;$"))))
+ (error "File %s is not an RCS master file" (vc-name file)))
+ (let ((workfile-is-latest nil)
+ (default-branch (vc-parse-buffer "^branch[ \t\n]+\\([^;]*\\);" 1)))
+ (vc-file-setprop file 'vc-rcs-default-branch default-branch)
(unless workfile-version
- (let ((default-branch (vc-parse-buffer "^branch[ \t\n]+\\([^;]*\\);" 1)))
- ;; Workfile version not known yet. Determine that first. It
- ;; is either the head of the trunk, the head of the default
- ;; branch, or the "default branch" itself, if that is a full
- ;; revision number.
- (cond
- ;; no default branch
- ((or (not default-branch) (string= "" default-branch))
+ ;; Workfile version not known yet. Determine that first. It
+ ;; is either the head of the trunk, the head of the default
+ ;; branch, or the "default branch" itself, if that is a full
+ ;; revision number.
+ (cond
+ ;; no default branch
+ ((or (not default-branch) (string= "" default-branch))
+ (setq workfile-version
+ (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1))
+ (setq workfile-is-latest t))
+ ;; default branch is actually a revision
+ ((string-match "^[0-9]+\\.[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*$"
+ default-branch)
+ (setq workfile-version default-branch))
+ ;; else, search for the head of the default branch
+ (t (vc-insert-file (vc-name file) "^desc")
(setq workfile-version
- (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1))
- (setq workfile-is-latest t))
- ;; default branch is actually a revision
- ((string-match "^[0-9]+\\.[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*$"
- default-branch)
- (setq workfile-version default-branch))
- ;; else, search for the head of the default branch
- (t (vc-insert-file (vc-name file) "^desc")
- (setq workfile-version
- (vc-rcs-find-most-recent-rev default-branch))
- (setq workfile-is-latest t)))
- (vc-file-setprop file 'vc-workfile-version workfile-version)))
+ (vc-rcs-find-most-recent-rev default-branch))
+ (setq workfile-is-latest t)))
+ (vc-file-setprop file 'vc-workfile-version workfile-version))
;; Check strict locking
(goto-char (point-min))
(vc-file-setprop file 'vc-checkout-model
(vc-file-setprop file 'vc-checkout-model 'implicit)))
status))))
-(defun vc-rcs-workfile-unchanged-p (file)
- "RCS-specific implementation of vc-workfile-unchanged-p."
- ;; Try to use rcsdiff --brief. If rcsdiff does not understand that,
- ;; do a double take and remember the fact for the future
- (let* ((version (concat "-r" (vc-workfile-version file)))
- (status (if (eq vc-rcsdiff-knows-brief 'no)
- (vc-do-command nil 1 "rcsdiff" file version)
- (vc-do-command nil 2 "rcsdiff" file "--brief" version))))
- (if (eq status 2)
- (if (not vc-rcsdiff-knows-brief)
- (setq vc-rcsdiff-knows-brief 'no
- status (vc-do-command nil 1 "rcsdiff" file version))
- (error "rcsdiff failed"))
- (if (not vc-rcsdiff-knows-brief) (setq vc-rcsdiff-knows-brief 'yes)))
- ;; The workfile is unchanged if rcsdiff found no differences.
- (zerop status)))
-
-(defun vc-rcs-trunk-p (rev)
- "Return t if REV is an RCS revision on the trunk."
- (not (eq nil (string-match "\\`[0-9]+\\.[0-9]+\\'" rev))))
-
-(defun vc-rcs-branch-part (rev)
- "Return the branch part of an RCS revision number REV"
- (substring rev 0 (string-match "\\.[0-9]+\\'" rev)))
-
-(defun vc-rcs-latest-on-branch-p (file &optional version)
- "Return non-nil if workfile version of FILE is the latest on its branch.
-When VERSION is given, perform check for that version."
- (unless version (setq version (vc-workfile-version file)))
- (with-temp-buffer
- (string= version
- (if (vc-rcs-trunk-p version)
- (progn
- ;; Compare VERSION to the head version number.
- (vc-insert-file (vc-name file) "^[0-9]")
- (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1))
- ;; If we are not on the trunk, we need to examine the
- ;; whole current branch.
- (vc-insert-file (vc-name file) "^desc")
- (vc-rcs-find-most-recent-rev (vc-rcs-branch-part version))))))
-\f
-(defun vc-rcs-branch-p (rev)
- "Return t if REV is an RCS branch revision"
- (not (eq nil (string-match "\\`[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*\\'" rev))))
-
-(defun vc-rcs-minor-part (rev)
- "Return the minor version number of an RCS revision number REV."
- (string-match "[0-9]+\\'" rev)
- (substring rev (match-beginning 0) (match-end 0)))
-
-(defun vc-rcs-previous-version (rev)
- "Guess the previous RCS version number"
- (let ((branch (vc-rcs-branch-part rev))
- (minor-num (string-to-number (vc-rcs-minor-part rev))))
- (if (> minor-num 1)
- ;; version does probably not start a branch or release
- (concat branch "." (number-to-string (1- minor-num)))
- (if (vc-rcs-trunk-p rev)
- ;; we are at the beginning of the trunk --
- ;; don't know anything to return here
- ""
- ;; we are at the beginning of a branch --
- ;; return version of starting point
- (vc-rcs-branch-part branch)))))
-
-(defun vc-rcs-print-log (file)
- "Get change log associated with FILE."
- (vc-do-command t 0 "rlog" (vc-name file)))
-
-(defun vc-rcs-show-log-entry (version)
- (when (re-search-forward
- ;; also match some context, for safety
- (concat "----\nrevision " version
- "\\(\tlocked by:.*\n\\|\n\\)date: ") nil t)
- ;; set the display window so that
- ;; the whole log entry is displayed
- (let (start end lines)
- (beginning-of-line) (forward-line -1) (setq start (point))
- (if (not (re-search-forward "^----*\nrevision" nil t))
- (setq end (point-max))
- (beginning-of-line) (forward-line -1) (setq end (point)))
- (setq lines (count-lines start end))
- (cond
- ;; if the global information and this log entry fit
- ;; into the window, display from the beginning
- ((< (count-lines (point-min) end) (window-height))
- (goto-char (point-min))
- (recenter 0)
- (goto-char start))
- ;; if the whole entry fits into the window,
- ;; display it centered
- ((< (1+ lines) (window-height))
- (goto-char start)
- (recenter (1- (- (/ (window-height) 2) (/ lines 2)))))
- ;; otherwise (the entry is too large for the window),
- ;; display from the start
- (t
- (goto-char start)
- (recenter 0))))))
-
-(defun vc-rcs-assign-name (file name)
- "Assign to FILE's latest version a given NAME."
- (vc-do-command nil 0 "rcs" (vc-name file) (concat "-n" name ":")))
-
-(defun vc-rcs-merge (file first-version &optional second-version)
- "Merge changes into current working copy of FILE.
-The changes are between FIRST-VERSION and SECOND-VERSION."
- (vc-do-command nil 1 "rcsmerge" (vc-name file)
- "-kk" ; ignore keyword conflicts
- (concat "-r" first-version)
- (if second-version (concat "-r" second-version))))
-
-(defun vc-rcs-check-headers ()
- "Check if the current file has any headers in it."
- (save-excursion
- (goto-char (point-min))
- (re-search-forward "\\$[A-Za-z\300-\326\330-\366\370-\377]+\
-\\(: [\t -#%-\176\240-\377]*\\)?\\$" nil t)))
-
-(defun vc-rcs-clear-headers ()
- "Implementation of vc-clear-headers for RCS."
- (let ((case-fold-search nil))
- (goto-char (point-min))
- (while (re-search-forward
- (concat "\\$\\(Author\\|Date\\|Header\\|Id\\|Locker\\|Name\\|"
- "RCSfile\\|Revision\\|Source\\|State\\): [^$\n]+\\$")
- nil t)
- (replace-match "$\\1$"))))
-
-(defun vc-rcs-steal-lock (file &optional rev)
- "Steal the lock on the current workfile for FILE and revision REV.
-Needs RCS 5.6.2 or later for -M."
- (vc-do-command nil 0 "rcs" (vc-name file) "-M"
- (concat "-u" rev) (concat "-l" rev)))
-
-(defun vc-rcs-cancel-version (file writable)
- "Undo the most recent checkin of FILE.
-WRITABLE non-nil means previous version should be locked."
- (let* ((target (vc-workfile-version file))
- (previous (if (vc-trunk-p target) "" (vc-branch-part target)))
- (config (current-window-configuration))
- (done nil))
- (vc-do-command nil 0 "rcs" (vc-name file) (concat "-o" target))
- ;; Check out the most recent remaining version. If it fails, because
- ;; the whole branch got deleted, do a double-take and check out the
- ;; version where the branch started.
- (while (not done)
- (condition-case err
- (progn
- (vc-do-command nil 0 "co" (vc-name file) "-f"
- (concat (if writable "-l" "-u") previous))
- (setq done t))
- (error (set-buffer "*vc*")
- (goto-char (point-min))
- (if (search-forward "no side branches present for" nil t)
- (progn (setq previous (vc-branch-part previous))
- (vc-do-command nil 0 "rcs" (vc-name file)
- (concat "-b" previous))
- ;; vc-do-command popped up a window with
- ;; the error message. Get rid of it, by
- ;; restoring the old window configuration.
- (set-window-configuration config))
- ;; No, it was some other error: re-signal it.
- (signal (car err) (cdr err))))))))
-
-(defun vc-rcs-revert (file)
- "Revert FILE to the version it was based on."
- (vc-do-command nil 0 "co" (vc-name file) "-f"
- (concat "-u" (vc-workfile-version file))))
-
-(defun vc-rcs-rename-file (old new)
- ;; Just move the master file (using vc-rcs-master-templates).
- (vc-rename-master (vc-name old) new vc-rcs-master-templates))
-
(defun vc-release-greater-or-equal (r1 r2)
"Compare release numbers, represented as strings.
Release components are assumed cardinal numbers, not decimal fractions
(not (eq installation 'unknown)))
(vc-release-greater-or-equal installation release))))
-(defun vc-rcs-checkin (file rev comment)
- "RCS-specific version of `vc-backend-checkin'."
- (let ((switches (if (stringp vc-checkin-switches)
- (list vc-checkin-switches)
- vc-checkin-switches)))
- (let ((old-version (vc-workfile-version file)) new-version)
- (apply 'vc-do-command nil 0 "ci" (vc-name file)
- ;; if available, use the secure check-in option
- (and (vc-rcs-release-p "5.6.4") "-j")
- (concat (if vc-keep-workfiles "-u" "-r") rev)
- (concat "-m" comment)
- switches)
- (vc-file-setprop file 'vc-workfile-version nil)
-
- ;; determine the new workfile version
- (set-buffer "*vc*")
- (goto-char (point-min))
- (when (or (re-search-forward
- "new revision: \\([0-9.]+\\);" nil t)
- (re-search-forward
- "reverting to previous revision \\([0-9.]+\\)" nil t))
- (setq new-version (match-string 1))
- (vc-file-setprop file 'vc-workfile-version new-version))
-
- ;; if we got to a different branch, adjust the default
- ;; branch accordingly
- (cond
- ((and old-version new-version
- (not (string= (vc-rcs-branch-part old-version)
- (vc-rcs-branch-part new-version))))
- (vc-do-command nil 0 "rcs" (vc-name file)
- (if (vc-rcs-trunk-p new-version) "-b"
- (concat "-b" (vc-rcs-branch-part new-version))))
- ;; If this is an old RCS release, we might have
- ;; to remove a remaining lock.
- (if (not (vc-rcs-release-p "5.6.2"))
- ;; exit status of 1 is also accepted.
- ;; It means that the lock was removed before.
- (vc-do-command nil 1 "rcs" (vc-name file)
- (concat "-u" old-version))))))))
(defun vc-rcs-system-release ()
"Return the RCS release installed on this system, as a string.
(vc-parse-buffer "^RCS version \\([0-9.]+ *.*\\)" 1)))
'unknown))))
-(defun vc-rcs-diff (file &optional oldvers newvers)
- "Get a difference report using RCS between two versions of FILE."
- (if (not oldvers) (setq oldvers (vc-workfile-version file)))
- ;; If we know that --brief is not supported, don't try it.
- (let* ((diff-switches-list (if (listp diff-switches)
- diff-switches
- (list diff-switches)))
- (options (append (list "-q"
- (concat "-r" oldvers)
- (and newvers (concat "-r" newvers)))
- diff-switches-list)))
- (apply 'vc-do-command t 1 "rcsdiff" file options)))
-
-(defun vc-rcs-responsible-p (file)
- "Return non-nil if RCS thinks it would be responsible for registering FILE."
- ;; TODO: check for all the patterns in vc-rcs-master-templates
- (file-directory-p (expand-file-name "RCS" (file-name-directory file))))
-
-(defun vc-rcs-register (file &optional rev comment)
- "Register FILE into the RCS version-control system.
-REV is the optional revision number for the file. COMMENT can be used
-to provide an initial description of FILE.
-
-`vc-register-switches' and `vc-rcs-register-switches' are passed to
-the RCS command (in that order).
-
-Automatically retrieve a read-only version of the file with keywords
-expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
- (vc-file-clearprops file)
- (let ((subdir (expand-file-name "RCS" (file-name-directory file)))
- (switches (list
- (if (stringp vc-register-switches)
- (list vc-register-switches)
- vc-register-switches)
- (if (stringp vc-rcs-register-switches)
- (list vc-rcs-register-switches)
- vc-rcs-register-switches))))
-
- (and (not (file-exists-p subdir))
- (not (directory-files (file-name-directory file)
- nil ".*,v$" t))
- (yes-or-no-p "Create RCS subdirectory? ")
- (make-directory subdir))
- (apply 'vc-do-command nil 0 "ci" file
- ;; if available, use the secure registering option
- (and (vc-rcs-release-p "5.6.4") "-i")
- (concat (if vc-keep-workfiles "-u" "-r") rev)
- (and comment (concat "-t-" comment))
- switches)
- ;; parse output to find master file name and workfile version
- (with-current-buffer "*vc*"
- (goto-char (point-min))
- (let ((name (if (looking-at (concat "^\\(.*\\) <-- "
- (file-name-nondirectory file)))
- (match-string 1))))
- (if (not name)
- ;; if we couldn't find the master name,
- ;; run vc-rcs-registered to get it
- ;; (will be stored into the vc-name property)
- (vc-rcs-registered file)
- (vc-file-setprop file 'vc-name
- (if (file-name-absolute-p name)
- name
- (expand-file-name
- name
- (file-name-directory file))))))
- (vc-file-setprop file 'vc-workfile-version
- (if (re-search-forward
- "^initial revision: \\([0-9.]+\\).*\n"
- nil t)
- (match-string 1))))))
+(defun vc-rcs-set-non-strict-locking (file)
+ (vc-do-command nil 0 "rcs" file "-U")
+ (vc-file-setprop file 'vc-checkout-model 'implicit)
+ (set-file-modes file (logior (file-modes file) 128)))
-(defun vc-rcs-checkout (file &optional writable rev workfile)
- "Retrieve a copy of a saved version of FILE into a workfile."
- (let ((filename (or workfile file))
- (file-buffer (get-file-buffer file))
- switches)
- (message "Checking out %s..." filename)
- (save-excursion
- ;; Change buffers to get local value of vc-checkout-switches.
- (if file-buffer (set-buffer file-buffer))
- (setq switches (if (stringp vc-checkout-switches)
- (list vc-checkout-switches)
- vc-checkout-switches))
- ;; Save this buffer's default-directory
- ;; and use save-excursion to make sure it is restored
- ;; in the same buffer it was saved in.
- (let ((default-directory default-directory))
- (save-excursion
- ;; Adjust the default-directory so that the check-out creates
- ;; the file in the right place.
- (setq default-directory (file-name-directory filename))
- (if workfile ;; RCS
- ;; RCS can't check out into arbitrary file names directly.
- ;; Use `co -p' and make stdout point to the correct file.
- (let ((vc-modes (logior (file-modes (vc-name file))
- (if writable 128 0)))
- (failed t))
- (unwind-protect
- (progn
- (let ((coding-system-for-read 'no-conversion)
- (coding-system-for-write 'no-conversion))
- (with-temp-file filename
- (apply 'vc-do-command
- (current-buffer) 0 "co" (vc-name file)
- "-q" ;; suppress diagnostic output
- (if writable "-l")
- (concat "-p" rev)
- switches)))
- (set-file-modes filename
- (logior (file-modes (vc-name file))
- (if writable 128 0)))
- (setq failed nil))
- (and failed (file-exists-p filename)
- (delete-file filename))))
- (let (new-version)
- ;; if we should go to the head of the trunk,
- ;; clear the default branch first
- (and rev (string= rev "")
- (vc-do-command nil 0 "rcs" (vc-name file) "-b"))
- ;; now do the checkout
- (apply 'vc-do-command
- nil 0 "co" (vc-name file)
- ;; If locking is not strict, force to overwrite
- ;; the writable workfile.
- (if (eq (vc-checkout-model file) 'implicit) "-f")
- (if writable "-l")
- (if rev (concat "-r" rev)
- ;; if no explicit revision was specified,
- ;; check out that of the working file
- (let ((workrev (vc-workfile-version file)))
- (if workrev (concat "-r" workrev)
- nil)))
- switches)
- ;; determine the new workfile version
- (with-current-buffer "*vc*"
- (setq new-version
- (vc-parse-buffer "^revision \\([0-9.]+\\).*\n" 1)))
- (vc-file-setprop file 'vc-workfile-version new-version)
- ;; if necessary, adjust the default branch
- (and rev (not (string= rev ""))
- (vc-do-command
- nil 0 "rcs" (vc-name file)
- (concat "-b"
- (if (vc-rcs-latest-on-branch-p file new-version)
- (if (vc-rcs-trunk-p new-version) nil
- (vc-rcs-branch-part new-version))
- new-version)))))))
- (message "Checking out %s...done" filename)))))
+(defun vc-rcs-set-default-branch (file branch)
+ (vc-do-command nil 0 "rcs" (vc-name file) (concat "-b" branch))
+ (vc-file-setprop file 'vc-rcs-default-branch branch))
(provide 'vc-rcs)