-;;; vc-sccs.el --- support for SCCS version-control
+;;; vc-sccs.el --- support for SCCS version-control -*- lexical-binding:t -*-
-;; Copyright (C) 1992-2012 Free Software Foundation, Inc.
+;; Copyright (C) 1992-2015 Free Software Foundation, Inc.
;; Author: FSF (see vc.el for full credits)
;; Maintainer: Andre Spiegel <spiegel@gnu.org>
;;; Commentary:
-;; Proper function of the SCCS diff commands requires the shellscript vcdiff
-;; to be installed somewhere on Emacs's path for executables.
-;;
-
;;; Code:
(eval-when-compile
;;;
;; ;; Maybe a better solution is to not use "get" but "sccs get".
-;; (defcustom vc-sccs-path
-;; (let ((path ()))
-;; (dolist (dir '("/usr/sccs" "/usr/lib/sccs" "/usr/libexec/sccs"))
-;; (if (file-directory-p dir)
-;; (push dir path)))
-;; path)
-;; "List of extra directories to search for SCCS commands."
-;; :type '(repeat directory)
-;; :group 'vc)
+;; ;; Note for GNU CSSC, you can parse sccs -V to get the libexec path.
+;; (defcustom vc-sccs-path
+;; (prune-directory-list '("/usr/ccs/bin" "/usr/sccs" "/usr/lib/sccs"
+;; "/usr/libexec/sccs"))
+;; "List of extra directories to search for SCCS commands."
+;; :type '(repeat directory)
+;; :group 'vc)
(defgroup vc-sccs nil
"VC SCCS backend."
:version "24.1" ; no longer consult the obsolete vc-header-alist
:group 'vc-sccs)
+;; This needs to be autoloaded because vc-sccs-registered uses it (via
+;; vc-default-registered), and vc-hooks needs to be able to check
+;; for a registered backend without loading every backend.
;;;###autoload
(defcustom vc-sccs-master-templates
(purecopy '("%sSCCS/s.%s" "%ss.%s" vc-sccs-search-project-dir))
;;; Properties of the backend
(defun vc-sccs-revision-granularity () 'file)
-(defun vc-sccs-checkout-model (files) 'locking)
+(defun vc-sccs-checkout-model (_files) 'locking)
;;;
;;; State-querying functions
;; The autoload cookie below places vc-sccs-registered directly into
;; loaddefs.el, so that vc-sccs.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-sccs-registered(f) (vc-default-registered 'SCCS f))
-(defun vc-sccs-registered (f) (vc-default-registered 'SCCS f))
+;; every file that is visited.
+;;;###autoload
+(progn
+(defun vc-sccs-registered (f) (vc-default-registered 'SCCS f)))
(defun vc-sccs-state (file)
"SCCS-specific function to compute the version control state."
(working-revision (vc-working-revision file))
(locking-user (cdr (assoc working-revision locks))))
(if (not locking-user)
- (if (vc-workfile-unchanged-p file)
+ (if (vc-sccs-workfile-unchanged-p file)
'up-to-date
'unlocked-changes)
(if (string= locking-user (vc-user-login-name file))
locking-user)))
'up-to-date))))
-(defun vc-sccs-state-heuristic (file)
- "SCCS-specific state heuristic."
- (if (not (vc-mistrust-permissions file))
- ;; This implementation assumes that any file which is under version
- ;; control and has -rw-r--r-- is locked by its owner. This is true
- ;; for both RCS and SCCS, which keep unlocked files at -r--r--r--.
- ;; We have to be careful not to exclude files with execute bits on;
- ;; scripts can be under version control too. Also, we must ignore the
- ;; group-read and other-read bits, since paranoid users turn them off.
- (let* ((attributes (file-attributes file 'string))
- (owner-name (nth 2 attributes))
- (permissions (nth 8 attributes)))
- (if (string-match ".r-..-..-." permissions)
- 'up-to-date
- (if (string-match ".rw..-..-." permissions)
- (if (file-ownership-preserved-p file)
- 'edited
- owner-name)
- ;; Strange permissions.
- ;; Fall through to real state computation.
- (vc-sccs-state file))))
- (vc-sccs-state file)))
-
-(defun vc-sccs-dir-status (dir update-function)
- ;; FIXME: this function should be rewritten, using `vc-expand-dirs'
- ;; is not TRTD because it returns files from multiple backends.
- ;; It should also return 'unregistered files.
-
- ;; Doing lots of individual VC-state calls is painful, but
- ;; there is no better option in SCCS-land.
- (let ((flist (vc-expand-dirs (list dir)))
- (result nil))
- (dolist (file flist)
+(autoload 'vc-expand-dirs "vc")
+
+(defun vc-sccs-dir-status-files (dir files update-function)
+ (if (not files) (setq files (vc-expand-dirs (list dir) 'RCS)))
+ (let ((result nil))
+ (dolist (file files)
(let ((state (vc-state file))
(frel (file-relative-name file)))
(when (and (eq (vc-backend file) 'SCCS)
(push (list frel state) result))))
(funcall update-function result)))
+(autoload 'vc-master-name "vc-filewise")
+
(defun vc-sccs-working-revision (file)
"SCCS-specific version of `vc-working-revision'."
(with-temp-buffer
;; To find this number, search the entire delta table,
;; rather than just the first entry, because the
;; first entry might be a deleted ("R") revision.
- (vc-insert-file (vc-name file) "^\001e\n\001[^s]")
+ (vc-insert-file (vc-master-name file) "^\001e\n\001[^s]")
(vc-parse-buffer "^\001d D \\([^ ]+\\)" 1)))
+;; Cf vc-sccs-find-revision.
+(defun vc-sccs-write-revision (file outfile &optional rev)
+ "Write the SCCS version of input file FILE to output file OUTFILE.
+Optional string REV is a revision."
+ (with-temp-buffer
+ (apply 'vc-sccs-do-command t 0 "get" (vc-master-name file)
+ (append '("-s" "-p" "-k") ; -k: no keyword expansion
+ (if rev (list (concat "-r" rev)))))
+ (write-region nil nil outfile nil 'silent)))
+
(defun vc-sccs-workfile-unchanged-p (file)
- "SCCS-specific implementation of `vc-workfile-unchanged-p'."
- (zerop (apply 'vc-do-command "*vc*" 1 "vcdiff" (vc-name file)
- (list "--brief" "-q"
- (concat "-r" (vc-working-revision file))))))
+ "Has FILE remained unchanged since last checkout?"
+ (let ((tempfile (make-temp-file "vc-sccs")))
+ (unwind-protect
+ (progn
+ (vc-sccs-write-revision file tempfile (vc-working-revision file))
+ (zerop (vc-do-command "*vc*" 1 "cmp" file tempfile)))
+ (delete-file tempfile))))
\f
;;;
;; SCCS is totally file-oriented, so all we have to do is make the directory
(make-directory "SCCS"))
-(defun vc-sccs-register (files &optional rev comment)
+(autoload 'vc-switches "vc")
+
+(defun vc-sccs-register (files &optional comment)
"Register FILES into the SCCS version-control system.
-REV is the optional revision number for the file. COMMENT can be used
-to provide an initial description of FILES.
+Automatically retrieve a read-only version of the files with keywords expanded.
+COMMENT can be used to provide an initial description of FILES.
Passes either `vc-sccs-register-switches' or `vc-register-switches'
-to the SCCS command.
-
-Automatically retrieve a read-only version of the files with keywords
-expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile."
+to the SCCS command."
(dolist (file files)
(let* ((dirname (or (file-name-directory file) ""))
(basename (file-name-nondirectory file))
(project-file (vc-sccs-search-project-dir dirname basename)))
- (let ((vc-name
+ (let ((vc-master-name
(or project-file
(format (car vc-sccs-master-templates) dirname basename))))
- (apply 'vc-sccs-do-command nil 0 "admin" vc-name
- (and rev (not (string= rev "")) (concat "-r" rev))
+ (apply 'vc-sccs-do-command nil 0 "admin" vc-master-name
"-fb"
(concat "-i" (file-relative-name file))
(and comment (concat "-y" comment))
(vc-switches 'SCCS 'register)))
(delete-file file)
- (if vc-keep-workfiles
- (vc-sccs-do-command nil 0 "get" (vc-name file))))))
+ (vc-sccs-do-command nil 0 "get" (vc-master-name file)))))
(defun vc-sccs-responsible-p (file)
"Return non-nil if SCCS thinks it would be responsible for registering FILE."
(stringp (vc-sccs-search-project-dir (or (file-name-directory file) "")
(file-name-nondirectory file)))))
-(defun vc-sccs-checkin (files rev comment)
+(defun vc-sccs-checkin (files comment)
"SCCS-specific version of `vc-backend-checkin'."
- (dolist (file (vc-expand-dirs files))
- (apply 'vc-sccs-do-command nil 0 "delta" (vc-name file)
- (if rev (concat "-r" rev))
+ (dolist (file (vc-expand-dirs files 'SCCS))
+ (apply 'vc-sccs-do-command nil 0 "delta" (vc-master-name file)
(concat "-y" comment)
(vc-switches 'SCCS 'checkin))
- (if vc-keep-workfiles
- (vc-sccs-do-command nil 0 "get" (vc-name file)))))
+ (vc-sccs-do-command nil 0 "get" (vc-master-name file))))
(defun vc-sccs-find-revision (file rev buffer)
(apply 'vc-sccs-do-command
- buffer 0 "get" (vc-name file)
+ buffer 0 "get" (vc-master-name file)
"-s" ;; suppress diagnostic output
"-p"
(and rev
(vc-sccs-lookup-triple file rev)))
(vc-switches 'SCCS 'checkout)))
-(defun vc-sccs-checkout (file &optional editable rev)
+(defun vc-sccs-checkout (file &optional rev)
"Retrieve a copy of a saved revision of SCCS controlled FILE.
If FILE is a directory, all version-controlled files beneath are checked out.
EDITABLE non-nil means that the file should be writable and
locked. REV is the revision to check out."
(if (file-directory-p file)
- (mapc 'vc-sccs-checkout (vc-expand-dirs (list file)))
+ (mapc 'vc-sccs-checkout (vc-expand-dirs (list file) 'SCCS))
(let ((file-buffer (get-file-buffer file))
switches)
(message "Checking out %s..." file)
(and rev (or (string= rev "")
(not (stringp rev)))
(setq rev nil))
- (apply 'vc-sccs-do-command nil 0 "get" (vc-name file)
- (if editable "-e")
+ (apply 'vc-sccs-do-command nil 0 "get" (vc-master-name file)
+ "-e"
(and rev (concat "-r" (vc-sccs-lookup-triple file rev)))
switches))))
(message "Checking out %s...done" file))))
-(defun vc-sccs-rollback (files)
- "Roll back, undoing the most recent checkins of FILES. Directories
-are expanded to all version-controlled subfiles."
- (setq files (vc-expand-dirs files))
- (if (not files)
- (error "SCCS backend doesn't support directory-level rollback"))
- (dolist (file files)
- (let ((discard (vc-working-revision file)))
- (if (null (yes-or-no-p (format "Remove version %s from %s history? "
- discard file)))
- (error "Aborted"))
- (message "Removing revision %s from %s..." discard file)
- (vc-sccs-do-command nil 0 "rmdel"
- (vc-name file) (concat "-r" discard))
- (vc-sccs-do-command nil 0 "get" (vc-name file) nil))))
-
-(defun vc-sccs-revert (file &optional contents-done)
+(defun vc-sccs-revert (file &optional _contents-done)
"Revert FILE to the version it was based on. If FILE is a directory,
revert all subfiles."
(if (file-directory-p file)
- (mapc 'vc-sccs-revert (vc-expand-dirs (list file)))
- (vc-sccs-do-command nil 0 "unget" (vc-name file))
- (vc-sccs-do-command nil 0 "get" (vc-name file))
+ (mapc 'vc-sccs-revert (vc-expand-dirs (list file) 'SCCS))
+ (vc-sccs-do-command nil 0 "unget" (vc-master-name file))
+ (vc-sccs-do-command nil 0 "get" (vc-master-name file))
;; Checking out explicit revisions is not supported under SCCS, yet.
;; We always "revert" to the latest revision; therefore
;; vc-working-revision is cleared here so that it gets recomputed.
(defun vc-sccs-steal-lock (file &optional rev)
"Steal the lock on the current workfile for FILE and revision REV."
(if (file-directory-p file)
- (mapc 'vc-sccs-steal-lock (vc-expand-dirs (list file)))
+ (mapc 'vc-sccs-steal-lock (vc-expand-dirs (list file) 'SCCS))
(vc-sccs-do-command nil 0 "unget"
- (vc-name file) "-n" (if rev (concat "-r" rev)))
+ (vc-master-name file) "-n" (if rev (concat "-r" rev)))
(vc-sccs-do-command nil 0 "get"
- (vc-name file) "-g" (if rev (concat "-r" rev)))))
+ (vc-master-name file) "-g" (if rev (concat "-r" rev)))))
(defun vc-sccs-modify-change-comment (files rev comment)
"Modify (actually, append to) the change comments for FILES on a specified REV."
- (dolist (file (vc-expand-dirs files))
- (vc-sccs-do-command nil 0 "cdc" (vc-name file)
+ (dolist (file (vc-expand-dirs files 'SCCS))
+ (vc-sccs-do-command nil 0 "cdc" (vc-master-name file)
(concat "-y" comment) (concat "-r" rev))))
\f
;;; History functions
;;;
-(defun vc-sccs-print-log (files buffer &optional shortlog start-revision-ignored limit)
- "Get change log associated with FILES."
- (setq files (vc-expand-dirs files))
- (vc-sccs-do-command buffer 0 "prs" (mapcar 'vc-name files))
+(defun vc-sccs-print-log (files buffer &optional _shortlog _start-revision-ignored limit)
+ "Print commit log associated with FILES into specified BUFFER.
+Remaining arguments are ignored."
+ (setq files (vc-expand-dirs files 'SCCS))
+ (vc-sccs-do-command buffer 0 "prs" (mapcar 'vc-master-name files))
(when limit 'limit-unsupported))
-(defun vc-sccs-diff (files &optional oldvers newvers buffer)
+(autoload 'vc-setup-buffer "vc-dispatcher")
+(autoload 'vc-delistify "vc-dispatcher")
+
+(defvar w32-quote-process-args)
+
+;; FIXME use sccsdiff if present?
+(defun vc-sccs-diff (files &optional oldvers newvers buffer _async)
"Get a difference report using SCCS between two filesets."
- (setq files (vc-expand-dirs files))
+ (setq files (vc-expand-dirs files 'SCCS))
(setq oldvers (vc-sccs-lookup-triple (car files) oldvers))
(setq newvers (vc-sccs-lookup-triple (car files) newvers))
- (apply 'vc-do-command (or buffer "*vc-diff*")
- 1 "vcdiff" (mapcar 'vc-name (vc-expand-dirs files))
- (append (list "-q"
- (and oldvers (concat "-r" oldvers))
- (and newvers (concat "-r" newvers)))
- (vc-switches 'SCCS 'diff))))
+ (or buffer (setq buffer "*vc-diff*"))
+ ;; We have to reimplement pieces of vc-do-command, because
+ ;; we want to run multiple external commands, and only do the setup
+ ;; and exit pieces once.
+ (save-current-buffer
+ (unless (or (eq buffer t)
+ (and (stringp buffer) (string= (buffer-name) buffer))
+ (eq buffer (current-buffer)))
+ (vc-setup-buffer buffer))
+ (let* ((fake-flags (append (vc-switches 'SCCS 'diff)
+ (if oldvers (list (concat " -r" oldvers)))
+ (if newvers (list (concat " -r" newvers)))))
+ (fake-command
+ (format "diff%s %s"
+ (if fake-flags
+ (concat " " (mapconcat 'identity fake-flags " "))
+ "")
+ (vc-delistify files)))
+ (status 0)
+ (oldproc (get-buffer-process (current-buffer))))
+ (when vc-command-messages
+ (message "Running %s in foreground..." fake-command))
+ (if oldproc (delete-process oldproc))
+ (dolist (file files)
+ (let ((oldfile (make-temp-file "vc-sccs"))
+ newfile)
+ (unwind-protect
+ (progn
+ (vc-sccs-write-revision file oldfile oldvers)
+ (if newvers
+ (vc-sccs-write-revision file (setq newfile
+ (make-temp-file "vc-sccs"))
+ newvers))
+ (let* ((inhibit-read-only t)
+ (buffer-undo-list t)
+ (process-environment
+ (cons "LC_MESSAGES=C" process-environment))
+ (w32-quote-process-args t)
+ (this-status
+ (apply 'process-file "diff" nil t nil
+ (append (vc-switches 'SCCS 'diff)
+ (list oldfile
+ (or newfile
+ (file-relative-name file)))))))
+ (or (integerp this-status) (setq status 'error))
+ (and (integerp status)
+ (> this-status status)
+ (setq status this-status))))
+ (delete-file oldfile)
+ (if newfile (delete-file newfile)))))
+ (when (or (not (integerp status)) (> status 1))
+ (unless (eq ?\s (aref (buffer-name (current-buffer)) 0))
+ (pop-to-buffer (current-buffer))
+ (goto-char (point-min))
+ (shrink-window-if-larger-than-buffer))
+ (error "Running %s...FAILED (%s)" fake-command
+ (if (integerp status) (format "status %d" status) status)))
+ (when vc-command-messages
+ (message "Running %s...OK = %d" fake-command status))
+ ;; Should we pretend we ran sccsdiff instead?
+ ;; This might not actually be a valid diff command.
+ (run-hook-with-args 'vc-post-command-functions "diff" files fake-flags)
+ status)))
\f
;;;
;;; our own set of name-to-revision mappings.
;;;
+(autoload 'vc-tag-precondition "vc")
+(declare-function vc-file-tree-walk "vc" (dirname func &rest args))
+
(defun vc-sccs-create-tag (dir name branchp)
(when branchp
(error "SCCS backend does not support module branches"))
(goto-char (point-min))
(re-search-forward "%[A-Z]%" nil t)))
+(autoload 'vc-rename-master "vc-filewise")
+
(defun vc-sccs-rename-file (old new)
;; Move the master file (using vc-rcs-master-templates).
- (vc-rename-master (vc-name old) new vc-sccs-master-templates)
+ (vc-rename-master (vc-master-name old) new vc-sccs-master-templates)
;; Update the tag file.
(with-current-buffer
(find-file-noselect
(expand-file-name vc-sccs-name-assoc-file
- (file-name-directory (vc-name old))))
+ (file-name-directory (vc-master-name old))))
(goto-char (point-min))
;; (replace-regexp (concat ":" (regexp-quote old) "$") (concat ":" new))
(while (re-search-forward (concat ":" (regexp-quote old) "$") nil t)
;; a (autoload 'vc-sccs-search-project-dir "vc-sccs") which would not
;; help us avoid loading vc-sccs.
;;;###autoload
-(progn (defun vc-sccs-search-project-dir (dirname basename)
+(progn (defun vc-sccs-search-project-dir (_dirname basename)
"Return the name of a master file in the SCCS project directory.
Does not check whether the file exists but returns nil if it does not
find any project directory."
(defun vc-sccs-lock-file (file)
"Generate lock file name corresponding to FILE."
- (let ((master (vc-name file)))
+ (let ((master (vc-master-name file)))
(and
master
(string-match "\\(.*/\\)\\(s\\.\\)\\(.*\\)" master)
(with-current-buffer
(find-file-noselect
(expand-file-name vc-sccs-name-assoc-file
- (file-name-directory (vc-name file))))
+ (file-name-directory (vc-master-name file))))
(goto-char (point-max))
(insert name "\t:\t" file "\t" rev "\n")
(basic-save-buffer)
(with-temp-buffer
(vc-insert-file
(expand-file-name vc-sccs-name-assoc-file
- (file-name-directory (vc-name file))))
+ (file-name-directory (vc-master-name file))))
(vc-parse-buffer (concat name "\t:\t" file "\t\\(.+\\)") 1))))
(provide 'vc-sccs)