X-Git-Url: https://code.delx.au/gnu-emacs/blobdiff_plain/ac3f4c6f0213219ce488c46667a8bed6f915e71f..866b58d61afd2eccfed53d1707bea233bde3c030:/lisp/vc-sccs.el diff --git a/lisp/vc-sccs.el b/lisp/vc-sccs.el index fd5e24ae5e..4e89e72663 100644 --- a/lisp/vc-sccs.el +++ b/lisp/vc-sccs.el @@ -1,19 +1,18 @@ ;;; vc-sccs.el --- support for SCCS version-control ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, -;; 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. +;; 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 +;; Free Software Foundation, Inc. ;; Author: FSF (see vc.el for full credits) ;; Maintainer: Andre Spiegel -;; $Id$ - ;; This file is part of GNU Emacs. -;; GNU Emacs is free software; you can redistribute it and/or modify +;; 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, or (at your option) -;; any later version. +;; 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 @@ -21,15 +20,13 @@ ;; GNU General Public License for more details. ;; You should have received a copy of the GNU General Public License -;; along with GNU Emacs; see the file COPYING. If not, write to the -;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, -;; Boston, MA 02110-1301, USA. +;; along with GNU Emacs. If not, see . ;;; Commentary: -;; TODO: -;; - remove call to vc-expand-dirs by implementing our own (which can just -;; list the SCCS subdir instead). +;; Proper function of the SCCS diff commands requires the shellscript vcdiff +;; to be installed somewhere on Emacs's path for executables. +;; ;;; Code: @@ -40,38 +37,48 @@ ;;; Customization options ;;; +;; ;; 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) + (defcustom vc-sccs-register-switches nil - "*Extra switches for registering a file in SCCS. + "Switches for registering a file in SCCS. A string or list of strings passed to the checkin program by -\\[vc-sccs-register]." - :type '(choice (const :tag "None" nil) +\\[vc-register]. If nil, use the value of `vc-register-switches'. +If t, use no switches." + :type '(choice (const :tag "Unspecified" nil) + (const :tag "None" t) (string :tag "Argument String") - (repeat :tag "Argument List" - :value ("") - string)) + (repeat :tag "Argument List" :value ("") string)) :version "21.1" :group 'vc) (defcustom vc-sccs-diff-switches nil - "*A string or list of strings specifying extra switches for `vcdiff', -the diff utility used for SCCS under VC." - :type '(choice (const :tag "None" nil) + "String or list of strings specifying switches for SCCS diff under VC. +If nil, use the value of `vc-diff-switches'. If t, use no switches." + :type '(choice (const :tag "Unspecified" nil) + (const :tag "None" t) (string :tag "Argument String") - (repeat :tag "Argument List" - :value ("") - string)) + (repeat :tag "Argument List" :value ("") string)) :version "21.1" :group 'vc) (defcustom vc-sccs-header (or (cdr (assoc 'SCCS vc-header-alist)) '("%W%")) - "*Header keywords to be inserted by `vc-insert-headers'." + "Header keywords to be inserted by `vc-insert-headers'." :type '(repeat string) :group 'vc) ;;;###autoload (defcustom vc-sccs-master-templates - '("%sSCCS/s.%s" "%ss.%s" vc-sccs-search-project-dir) - "*Where to look for SCCS master files. + (purecopy '("%sSCCS/s.%s" "%ss.%s" vc-sccs-search-project-dir)) + "Where to look for SCCS master files. For a description of possible values, see `vc-check-master-templates'." :type '(choice (const :tag "Use standard SCCS file names" ("%sSCCS/s.%s" "%ss.%s" vc-sccs-search-project-dir)) @@ -91,36 +98,38 @@ For a description of possible values, see `vc-check-master-templates'." ;;; Properties of the backend -(defun vc-sccs-revision-granularity () - 'file) +(defun vc-sccs-revision-granularity () 'file) +(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. +;; 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)) (defun vc-sccs-state (file) "SCCS-specific function to compute the version control state." - (with-temp-buffer - (if (vc-insert-file (vc-sccs-lock-file file)) - (let* ((locks (vc-sccs-parse-locks)) - (working-revision (vc-working-revision file)) - (locking-user (cdr (assoc working-revision locks)))) - (if (not locking-user) - (if (vc-workfile-unchanged-p file) - 'up-to-date - 'unlocked-changes) - (if (string= locking-user (vc-user-login-name file)) - 'edited - locking-user))) - 'up-to-date))) + (if (not (vc-sccs-registered file)) + 'unregistered + (with-temp-buffer + (if (vc-insert-file (vc-sccs-lock-file file)) + (let* ((locks (vc-sccs-parse-locks)) + (working-revision (vc-working-revision file)) + (locking-user (cdr (assoc working-revision locks)))) + (if (not locking-user) + (if (vc-workfile-unchanged-p file) + 'up-to-date + 'unlocked-changes) + (if (string= locking-user (vc-user-login-name file)) + 'edited + locking-user))) + 'up-to-date)))) (defun vc-sccs-state-heuristic (file) "SCCS-specific state heuristic." @@ -145,23 +154,36 @@ For a description of possible values, see `vc-check-master-templates'." (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) + (let ((state (vc-state file)) + (frel (file-relative-name file))) + (when (and (eq (vc-backend file) 'SCCS) + (not (eq state 'up-to-date))) + (push (list frel state) result)))) + (funcall update-function result))) + (defun vc-sccs-working-revision (file) "SCCS-specific version of `vc-working-revision'." (with-temp-buffer - ;; The workfile version is always the latest version number. + ;; The working revision is always the latest revision number. ;; To find this number, search the entire delta table, ;; rather than just the first entry, because the - ;; first entry might be a deleted ("R") version. + ;; first entry might be a deleted ("R") revision. (vc-insert-file (vc-name file) "^\001e\n\001[^s]") (vc-parse-buffer "^\001d D \\([^ ]+\\)" 1))) -(defun vc-sccs-checkout-model (file) - "SCCS-specific version of `vc-checkout-model'." - 'locking) - (defun vc-sccs-workfile-unchanged-p (file) "SCCS-specific implementation of `vc-workfile-unchanged-p'." - (zerop (apply 'vc-do-command nil 1 "vcdiff" (vc-name file) + (zerop (apply 'vc-do-command "*vc*" 1 "vcdiff" (vc-name file) (list "--brief" "-q" (concat "-r" (vc-working-revision file)))))) @@ -170,6 +192,11 @@ For a description of possible values, see `vc-check-master-templates'." ;;; State-changing functions ;;; +(defun vc-sccs-do-command (buffer okstatus command file-or-list &rest flags) + ;; (let ((load-path (append vc-sccs-path load-path))) + ;; (apply 'vc-do-command buffer okstatus command file-or-list flags)) + (apply 'vc-do-command (or buffer "*vc*") okstatus "sccs" file-or-list command flags)) + (defun vc-sccs-create-repo () "Create a new SCCS repository." ;; SCCS is totally file-oriented, so all we have to do is make the directory @@ -179,9 +206,8 @@ For a description of possible values, see `vc-check-master-templates'." "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. - -`vc-register-switches' and `vc-sccs-register-switches' are passed to -the SCCS command (in that order). +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." @@ -192,7 +218,7 @@ expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." (let ((vc-name (or project-file (format (car vc-sccs-master-templates) dirname basename)))) - (apply 'vc-do-command nil 0 "admin" vc-name + (apply 'vc-sccs-do-command nil 0 "admin" vc-name (and rev (not (string= rev "")) (concat "-r" rev)) "-fb" (concat "-i" (file-relative-name file)) @@ -200,7 +226,7 @@ expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." (vc-switches 'SCCS 'register))) (delete-file file) (if vc-keep-workfiles - (vc-do-command nil 0 "get" (vc-name file)))))) + (vc-sccs-do-command nil 0 "get" (vc-name file)))))) (defun vc-sccs-responsible-p (file) "Return non-nil if SCCS thinks it would be responsible for registering FILE." @@ -211,16 +237,16 @@ expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." (defun vc-sccs-checkin (files rev comment) "SCCS-specific version of `vc-backend-checkin'." - (dolist (file files) - (apply 'vc-do-command nil 0 "delta" (vc-name file) + (dolist (file (vc-expand-dirs files)) + (apply 'vc-sccs-do-command nil 0 "delta" (vc-name file) (if rev (concat "-r" rev)) (concat "-y" comment) (vc-switches 'SCCS 'checkin)) (if vc-keep-workfiles - (vc-do-command nil 0 "get" (vc-name file))))) + (vc-sccs-do-command nil 0 "get" (vc-name file))))) (defun vc-sccs-find-revision (file rev buffer) - (apply 'vc-do-command + (apply 'vc-sccs-do-command buffer 0 "get" (vc-name file) "-s" ;; suppress diagnostic output "-p" @@ -230,86 +256,97 @@ expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." (vc-switches 'SCCS 'checkout))) (defun vc-sccs-checkout (file &optional editable rev) - "Retrieve a copy of a saved version of SCCS controlled FILE. + "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." - (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 (vc-switches 'SCCS 'checkout)) - ;; 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)) - - (and rev (or (string= rev "") - (not (stringp rev))) - (setq rev nil)) - (apply 'vc-do-command nil 0 "get" (vc-name file) - (if editable "-e") - (and rev (concat "-r" (vc-sccs-lookup-triple file rev))) - switches)))) - (message "Checking out %s...done" file))) - -(defun vc-sccs-cancel-version (files) - "Roll back, undoing the most recent checkins of FILES." + (if (file-directory-p file) + (mapc 'vc-sccs-checkout (vc-expand-dirs (list 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 (vc-switches 'SCCS 'checkout)) + ;; 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)) + + (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") + (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.")) + (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? " + (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-do-command nil 0 "rmdel" (vc-name file) (concat "-r" discard)) - (vc-do-command nil 0 "get" (vc-name file) nil)))) + (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) - "Revert FILE to the version it was based on." - (vc-do-command nil 0 "unget" (vc-name file)) - (vc-do-command nil 0 "get" (vc-name file)) - ;; Checking out explicit versions is not supported under SCCS, yet. - ;; We always "revert" to the latest version; therefore - ;; vc-working-revision is cleared here so that it gets recomputed. - (vc-file-setprop file 'vc-working-revision nil)) + "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)) + ;; 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. + (vc-file-setprop file 'vc-working-revision nil))) (defun vc-sccs-steal-lock (file &optional rev) "Steal the lock on the current workfile for FILE and revision REV." - (vc-do-command nil 0 "unget" (vc-name file) "-n" (if rev (concat "-r" rev))) - (vc-do-command nil 0 "get" (vc-name file) "-g" (if rev (concat "-r" rev)))) + (if (file-directory-p file) + (mapc 'vc-sccs-steal-lock (vc-expand-dirs (list file))) + (vc-sccs-do-command nil 0 "unget" + (vc-name file) "-n" (if rev (concat "-r" rev))) + (vc-sccs-do-command nil 0 "get" + (vc-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) + (concat "-y" comment) (concat "-r" rev)))) ;;; ;;; History functions ;;; -(defun vc-sccs-print-log (files &optional buffer) +(defun vc-sccs-print-log (files buffer &optional shortlog start-revision-ignored limit) "Get change log associated with FILES." - (vc-do-command buffer 0 "prs" (mapcar 'vc-name files))) - -(defun vc-sccs-wash-log () - "Remove all non-comment information from log output." - ;; FIXME: not implemented for SCCS - nil) - -(defun vc-sccs-logentry-check () - "Check that the log entry in the current buffer is acceptable for SCCS." - (when (>= (buffer-size) 512) - (goto-char 512) - (error "Log must be less than 512 characters; point is now at pos 512"))) + (setq files (vc-expand-dirs files)) + (vc-sccs-do-command buffer 0 "prs" (mapcar 'vc-name files)) + (when limit 'limit-unsupported)) (defun vc-sccs-diff (files &optional oldvers newvers buffer) "Get a difference report using SCCS between two filesets." - (setq oldvers (vc-sccs-lookup-triple file oldvers)) - (setq newvers (vc-sccs-lookup-triple file newvers)) - (apply 'vc-do-command (or buffer "*vc-diff*") + (setq files (vc-expand-dirs files)) + (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)) @@ -318,18 +355,32 @@ locked. REV is the revision to check out." ;;; -;;; Snapshot system +;;; Tag system. SCCS doesn't have tags, so we simulate them by maintaining +;;; our own set of name-to-revision mappings. ;;; -(defun vc-sccs-assign-name (file name) - "Assign to FILE's latest version a given NAME." - (vc-sccs-add-triple name file (vc-working-revision file))) +(defun vc-sccs-create-tag (backend dir name branchp) + (when branchp + (error "SCCS backend %s does not support module branches" backend)) + (let ((result (vc-tag-precondition dir))) + (if (stringp result) + (error "File %s is not up-to-date" result) + (vc-file-tree-walk + dir + (lambda (f) + (vc-sccs-add-triple name f (vc-working-revision f))))))) ;;; ;;; Miscellaneous ;;; +(defun vc-sccs-previous-revision (file rev) + (vc-call-backend 'RCS 'previous-revision file rev)) + +(defun vc-sccs-next-revision (file rev) + (vc-call-backend 'RCS 'next-revision file rev)) + (defun vc-sccs-check-headers () "Check if the current file has any headers in it." (save-excursion @@ -339,7 +390,7 @@ locked. REV is the revision to check out." (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) - ;; Update the snapshot file. + ;; Update the tag file. (with-current-buffer (find-file-noselect (expand-file-name vc-sccs-name-assoc-file @@ -351,6 +402,13 @@ locked. REV is the revision to check out." (basic-save-buffer) (kill-buffer (current-buffer)))) +(defun vc-sccs-find-file-hook () + ;; If the file is locked by some other user, make + ;; the buffer read-only. Like this, even root + ;; cannot modify a file that someone else has locked. + (and (stringp (vc-state buffer-file-name 'SCCS)) + (setq buffer-read-only t))) + ;;; ;;; Internal functions @@ -388,7 +446,7 @@ find any project directory." (defun vc-sccs-parse-locks () "Parse SCCS locks in current buffer. -The result is a list of the form ((VERSION . USER) (VERSION . USER) ...)." +The result is a list of the form ((REVISION . USER) (REVISION . USER) ...)." (let (master-locks) (goto-char (point-min)) (while (re-search-forward "^\\([0-9.]+\\) [0-9.]+ \\([^ ]+\\) .*\n?" @@ -409,8 +467,8 @@ The result is a list of the form ((VERSION . USER) (VERSION . USER) ...)." (kill-buffer (current-buffer)))) (defun vc-sccs-lookup-triple (file name) - "Return the numeric version corresponding to a named snapshot of FILE. -If NAME is nil or a version number string it's just passed through." + "Return the numeric revision corresponding to a named tag of FILE. +If NAME is nil or a revision number string it's just passed through." (if (or (null name) (let ((firstchar (aref name 0))) (and (>= firstchar ?0) (<= firstchar ?9))))