lisp/vc-mcvs.el

   1 ;;; vc-mcvs.el --- VC backend for the Meta-CVS version-control system
   2
   3 ;; Copyright (C) 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
   4
   5 ;; Author:      FSF (see vc.el for full credits)
   6 ;; Maintainer:  Stefan Monnier <monnier@gnu.org>
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  23 ;; Boston, MA 02110-1301, USA.
  24
  25 ;;; Commentary:
  26
  27 ;; The home page of the Meta-CVS version control system is at
  28 ;;
  29 ;;      http://users.footprints.net/~kaz/mcvs.html
  30 ;;
  31 ;; This is derived from vc-cvs.el as follows:
  32 ;; - cp vc-cvs.el vc-mcvs.el
  33 ;; - Replace CVS/ with MCVS/CVS/
  34 ;; - Replace 'CVS with 'MCVS
  35 ;; - Replace -cvs- with -mcvs-
  36 ;; - Replace most of the rest of CVS to Meta-CVS
  37 ;;
  38 ;; Then of course started the hacking.  Only a small part of the code
  39 ;; has been touched and not much more than that was tested, so if
  40 ;; you bump into a bug, don't be surprised: just report it to me.
  41 ;;
  42 ;; What has been partly tested:
  43 ;; - C-x v v to start editing a file that was checked out with CVSREAD on.
  44 ;; - C-x v v to commit a file
  45 ;; - C-x v =
  46 ;; - C-x v l
  47 ;; - C-x v i
  48 ;; - C-x v g
  49 ;; - M-x vc-rename-file RET
  50
  51 ;;; Bugs:
  52
  53 ;; - Retrieving snapshots doesn't filter `cvs update' output and thus
  54 ;;   parses bogus filenames.  Don't know if it harms.
  55
  56 ;;; Code:
  57
  58 (eval-when-compile (require 'vc))
  59 (require 'vc-cvs)
  60
  61 ;;;
  62 ;;; Customization options
  63 ;;;
  64
  65 (defcustom vc-mcvs-global-switches nil
  66   "*Global switches to pass to any Meta-CVS command."
  67   :type '(choice (const :tag "None" nil)
  68                  (string :tag "Argument String")
  69                  (repeat :tag "Argument List"
  70                          :value ("")
  71                          string))
  72   :version "22.1"
  73   :group 'vc)
  74
  75 (defcustom vc-mcvs-register-switches nil
  76   "*Extra switches for registering a file into Meta-CVS.
  77 A string or list of strings passed to the checkin program by
  78 \\[vc-register]."
  79   :type '(choice (const :tag "None" nil)
  80                  (string :tag "Argument String")
  81                  (repeat :tag "Argument List"
  82                          :value ("")
  83                          string))
  84   :version "22.1"
  85   :group 'vc)
  86
  87 (defcustom vc-mcvs-diff-switches nil
  88   "*A string or list of strings specifying extra switches for cvs diff under VC."
  89     :type '(choice (const :tag "None" nil)
  90                  (string :tag "Argument String")
  91                  (repeat :tag "Argument List"
  92                          :value ("")
  93                          string))
  94   :version "22.1"
  95   :group 'vc)
  96
  97 (defcustom vc-mcvs-header (or (cdr (assoc 'MCVS vc-header-alist))
  98                               vc-cvs-header)
  99   "*Header keywords to be inserted by `vc-insert-headers'."
 100   :version "22.1"
 101   :type '(repeat string)
 102   :group 'vc)
 103
 104 (defcustom vc-mcvs-use-edit vc-cvs-use-edit
 105   "*Non-nil means to use `cvs edit' to \"check out\" a file.
 106 This is only meaningful if you don't use the implicit checkout model
 107 \(i.e. if you have $CVSREAD set)."
 108   :type 'boolean
 109   :version "22.1"
 110   :group 'vc)
 111
 112 ;;;
 113 ;;; State-querying functions
 114 ;;;
 115
 116 ;;;###autoload (defun vc-mcvs-registered (file)
 117 ;;;###autoload   (if (vc-find-root file "MCVS/CVS")
 118 ;;;###autoload       (progn
 119 ;;;###autoload         (load "vc-mcvs")
 120 ;;;###autoload         (vc-mcvs-registered file))))
 121
 122 (defun vc-mcvs-root (file)
 123   "Return the root directory of a Meta-CVS project, if any."
 124   (or (vc-file-getprop file 'mcvs-root)
 125       (vc-file-setprop file 'mcvs-root (vc-find-root file "MCVS/CVS"))))
 126
 127 (defun vc-mcvs-read (file)
 128   (if (file-readable-p file)
 129       (with-temp-buffer
 130         (insert-file-contents file)
 131         (goto-char (point-min))
 132         (read (current-buffer)))))
 133
 134 (defun vc-mcvs-map-file (dir file)
 135   (let ((map (vc-mcvs-read (expand-file-name "MCVS/MAP" dir)))
 136         inode)
 137     (dolist (x map inode)
 138       (if (equal (nth 2 x) file) (setq inode (nth 1 x))))))
 139
 140 (defun vc-mcvs-registered (file)
 141   (let (root inode cvsfile)
 142     (when (and (setq root (vc-mcvs-root file))
 143                (setq inode (vc-mcvs-map-file
 144                             root (file-relative-name file root))))
 145       (vc-file-setprop file 'mcvs-inode inode)
 146       ;; Avoid calling `mcvs diff' in vc-workfile-unchanged-p.
 147       (vc-file-setprop file 'vc-checkout-time
 148                        (if (vc-cvs-registered
 149                             (setq cvsfile (expand-file-name inode root)))
 150                            (vc-file-getprop cvsfile 'vc-checkout-time)
 151                          ;; The file might not be registered yet because
 152                          ;; of lazy-adding.
 153                          0))
 154       t)))
 155
 156 (defun vc-mcvs-state (file)
 157   ;; This would assume the Meta-CVS sandbox is synchronized.
 158   ;; (vc-mcvs-cvs state file))
 159   "Meta-CVS-specific version of `vc-state'."
 160   (if (vc-stay-local-p file)
 161       (let ((state (vc-file-getprop file 'vc-state)))
 162         ;; If we should stay local, use the heuristic but only if
 163         ;; we don't have a more precise state already available.
 164         (if (memq state '(up-to-date edited))
 165             (vc-mcvs-state-heuristic file)
 166           state))
 167     (with-temp-buffer
 168       (setq default-directory (vc-mcvs-root file))
 169       (vc-mcvs-command t 0 file "status")
 170       (vc-cvs-parse-status t))))
 171
 172
 173 (defalias 'vc-mcvs-state-heuristic 'vc-cvs-state-heuristic)
 174
 175 (defun vc-mcvs-dir-state (dir)
 176   "Find the Meta-CVS state of all files in DIR."
 177   ;; if DIR is not under Meta-CVS control, don't do anything.
 178   (when (file-readable-p (expand-file-name "MCVS/CVS/Entries" dir))
 179     (if (vc-stay-local-p dir)
 180         (vc-mcvs-dir-state-heuristic dir)
 181       (let ((default-directory dir))
 182         ;; Don't specify DIR in this command, the default-directory is
 183         ;; enough.  Otherwise it might fail with remote repositories.
 184         (with-temp-buffer
 185           (setq default-directory (vc-mcvs-root dir))
 186           (vc-mcvs-command t 0 nil "status" "-l")
 187           (goto-char (point-min))
 188           (while (re-search-forward "^=+\n\\([^=\n].*\n\\|\n\\)+" nil t)
 189             (narrow-to-region (match-beginning 0) (match-end 0))
 190             (vc-cvs-parse-status)
 191             (goto-char (point-max))
 192             (widen)))))))
 193
 194 (defun vc-mcvs-workfile-version (file)
 195   (vc-cvs-workfile-version
 196    (expand-file-name (vc-file-getprop file 'mcvs-inode)
 197                      (vc-file-getprop file 'mcvs-root))))
 198
 199 (defalias 'vc-mcvs-checkout-model 'vc-cvs-checkout-model)
 200
 201 ;;;
 202 ;;; State-changing functions
 203 ;;;
 204
 205 (defun vc-mcvs-register (file &optional rev comment)
 206   "Register FILE into the Meta-CVS version-control system.
 207 COMMENT can be used to provide an initial description of FILE.
 208
 209 `vc-register-switches' and `vc-mcvs-register-switches' are passed to
 210 the Meta-CVS command (in that order)."
 211   (let* ((filename (file-name-nondirectory file))
 212          (extpos (string-match "\\." filename))
 213          (ext (if extpos (substring filename (1+ extpos))))
 214          (root (vc-mcvs-root file))
 215          (types-file (expand-file-name "MCVS/TYPES" root))
 216          (map-file (expand-file-name "MCVS/MAP" root))
 217          (types (vc-mcvs-read types-file)))
 218     ;; Make sure meta files like MCVS/MAP are not read-only (happens with
 219     ;; CVSREAD) since Meta-CVS doesn't pay attention to it at all and goes
 220     ;; belly-up.
 221     (unless (file-writable-p map-file)
 222       (vc-checkout map-file t))
 223     (unless (or (file-writable-p types-file) (not (file-exists-p types-file)))
 224       (vc-checkout types-file t))
 225     ;; Make sure the `mcvs add' will not fire up the CVSEDITOR
 226     ;; to add a rule for the given file's extension.
 227     (when (and ext (not (assoc ext types)))
 228       (let ((type (completing-read "Type to use (default): "
 229                                    '("default" "name-only" "keep-old"
 230                                      "binary" "value-only")
 231                                    nil t nil nil "default")))
 232         (push (list ext (make-symbol (upcase (concat ":" type)))) types)
 233         (setq types (sort types (lambda (x y) (string< (car x) (car y)))))
 234         (with-current-buffer (find-file-noselect types-file)
 235           (erase-buffer)
 236           (pp types (current-buffer))
 237           (save-buffer)
 238           (unless (get-buffer-window (current-buffer) t)
 239             (kill-buffer (current-buffer)))))))
 240   ;; Now do the ADD.
 241   (prog1 (apply 'vc-mcvs-command nil 0 file
 242                 "add"
 243                 (and comment (string-match "[^\t\n ]" comment)
 244                      (concat "-m" comment))
 245                 (vc-switches 'MCVS 'register))
 246     ;; I'm not sure exactly why, but if we don't setup the inode and root
 247     ;; prop of the file, things break later on in vc-mode-line that
 248     ;; ends up calling vc-mcvs-workfile-version.
 249     ;; We also need to set vc-checkout-time so that vc-workfile-unchanged-p
 250     ;; doesn't try to call `mcvs diff' on the file.
 251     (vc-mcvs-registered file)))
 252
 253 (defalias 'vc-mcvs-responsible-p 'vc-mcvs-root
 254   "Return non-nil if CVS thinks it is responsible for FILE.")
 255
 256 (defalias 'vc-cvs-could-register 'vc-cvs-responsible-p
 257   "Return non-nil if FILE could be registered in Meta-CVS.
 258 This is only possible if Meta-CVS is responsible for FILE's directory.")
 259
 260 (defun vc-mcvs-checkin (file rev comment)
 261   "Meta-CVS-specific version of `vc-backend-checkin'."
 262   (unless (or (not rev) (vc-mcvs-valid-version-number-p rev))
 263     (if (not (vc-mcvs-valid-symbolic-tag-name-p rev))
 264         (error "%s is not a valid symbolic tag name" rev)
 265       ;; If the input revision is a valid symbolic tag name, we create it
 266       ;; as a branch, commit and switch to it.
 267       ;; This file-specific form of branching is deprecated.
 268       ;; We can't use `mcvs branch' and `mcvs switch' because they cannot
 269       ;; be applied just to this one file.
 270       (apply 'vc-mcvs-command nil 0 file "tag" "-b" (list rev))
 271       (apply 'vc-mcvs-command nil 0 file "update" "-r" (list rev))
 272       (vc-file-setprop file 'vc-mcvs-sticky-tag rev)
 273       (setq rev nil)))
 274   ;; This commit might cvs-commit several files (e.g. MAP and TYPES)
 275   ;; so using numbered revs here is dangerous and somewhat meaningless.
 276   (when rev (error "Cannot commit to a specific revision number"))
 277   (let ((status (apply 'vc-mcvs-command nil 1 file
 278                        "ci" "-m" comment
 279                        (vc-switches 'MCVS 'checkin))))
 280     (set-buffer "*vc*")
 281     (goto-char (point-min))
 282     (when (not (zerop status))
 283       ;; Check checkin problem.
 284       (cond
 285        ((re-search-forward "Up-to-date check failed" nil t)
 286         (vc-file-setprop file 'vc-state 'needs-merge)
 287         (error (substitute-command-keys
 288                 (concat "Up-to-date check failed: "
 289                         "type \\[vc-next-action] to merge in changes"))))
 290        (t
 291         (pop-to-buffer (current-buffer))
 292         (goto-char (point-min))
 293         (shrink-window-if-larger-than-buffer)
 294         (error "Check-in failed"))))
 295     ;; Update file properties
 296     (vc-file-setprop
 297      file 'vc-workfile-version
 298      (vc-parse-buffer "^\\(new\\|initial\\) revision: \\([0-9.]+\\)" 2))
 299     ;; Forget the checkout model of the file, because we might have
 300     ;; guessed wrong when we found the file.  After commit, we can
 301     ;; tell it from the permissions of the file (see
 302     ;; vc-mcvs-checkout-model).
 303     (vc-file-setprop file 'vc-checkout-model nil)
 304
 305     ;; if this was an explicit check-in (does not include creation of
 306     ;; a branch), remove the sticky tag.
 307     (if (and rev (not (vc-mcvs-valid-symbolic-tag-name-p rev)))
 308         (vc-mcvs-command nil 0 file "update" "-A"))))
 309
 310 (defun vc-mcvs-find-version (file rev buffer)
 311   (apply 'vc-mcvs-command
 312          buffer 0 file
 313          "-Q"                           ; suppress diagnostic output
 314          "update"
 315          (and rev (not (string= rev ""))
 316               (concat "-r" rev))
 317          "-p"
 318          (vc-switches 'MCVS 'checkout)))
 319
 320 (defun vc-mcvs-checkout (file &optional editable rev)
 321   (message "Checking out %s..." file)
 322   (with-current-buffer (or (get-file-buffer file) (current-buffer))
 323     (vc-call update file editable rev (vc-switches 'MCVS 'checkout)))
 324   (vc-mode-line file)
 325   (message "Checking out %s...done" file))
 326
 327 (defun vc-mcvs-update (file editable rev switches)
 328   (if (and (file-exists-p file) (not rev))
 329       ;; If no revision was specified, just make the file writable
 330       ;; if necessary (using `cvs-edit' if requested).
 331       (and editable (not (eq (vc-mcvs-checkout-model file) 'implicit))
 332            (if vc-mcvs-use-edit
 333                (vc-mcvs-command nil 0 file "edit")
 334              (set-file-modes file (logior (file-modes file) 128))
 335              (if (equal file buffer-file-name) (toggle-read-only -1))))
 336     ;; Check out a particular version (or recreate the file).
 337     (vc-file-setprop file 'vc-workfile-version nil)
 338     (apply 'vc-mcvs-command nil 0 file
 339            (if editable "-w")
 340            "update"
 341            ;; default for verbose checkout: clear the sticky tag so
 342            ;; that the actual update will get the head of the trunk
 343            (if (or (not rev) (string= rev ""))
 344                "-A"
 345              (concat "-r" rev))
 346            switches)))
 347
 348 (defun vc-mcvs-rename-file (old new)
 349   (vc-mcvs-command nil 0 new "move" (file-relative-name old)))
 350
 351 (defun vc-mcvs-revert (file &optional contents-done)
 352   "Revert FILE to the version it was based on."
 353   (vc-default-revert 'MCVS file contents-done)
 354   (unless (eq (vc-checkout-model file) 'implicit)
 355     (if vc-mcvs-use-edit
 356         (vc-mcvs-command nil 0 file "unedit")
 357       ;; Make the file read-only by switching off all w-bits
 358       (set-file-modes file (logand (file-modes file) 3950)))))
 359
 360 (defun vc-mcvs-merge (file first-version &optional second-version)
 361   "Merge changes into current working copy of FILE.
 362 The changes are between FIRST-VERSION and SECOND-VERSION."
 363   (vc-mcvs-command nil 0 file
 364                    "update" "-kk"
 365                    (concat "-j" first-version)
 366                    (concat "-j" second-version))
 367   (vc-file-setprop file 'vc-state 'edited)
 368   (with-current-buffer (get-buffer "*vc*")
 369     (goto-char (point-min))
 370     (if (re-search-forward "conflicts during merge" nil t)
 371         1                               ; signal error
 372       0)))                              ; signal success
 373
 374 (defun vc-mcvs-merge-news (file)
 375   "Merge in any new changes made to FILE."
 376   (message "Merging changes into %s..." file)
 377   ;; (vc-file-setprop file 'vc-workfile-version nil)
 378   (vc-file-setprop file 'vc-checkout-time 0)
 379   (vc-mcvs-command nil 0 file "update")
 380   ;; Analyze the merge result reported by Meta-CVS, and set
 381   ;; file properties accordingly.
 382   (with-current-buffer (get-buffer "*vc*")
 383     (goto-char (point-min))
 384     ;; get new workfile version
 385     (if (re-search-forward
 386          "^Merging differences between [0-9.]* and \\([0-9.]*\\) into" nil t)
 387         (vc-file-setprop file 'vc-workfile-version (match-string 1))
 388       (vc-file-setprop file 'vc-workfile-version nil))
 389     ;; get file status
 390     (prog1
 391         (if (eq (buffer-size) 0)
 392             0 ;; there were no news; indicate success
 393           (if (re-search-forward
 394                (concat "^\\([CMUP] \\)?"
 395                        ".*"
 396                        "\\( already contains the differences between \\)?")
 397                nil t)
 398               (cond
 399                ;; Merge successful, we are in sync with repository now
 400                ((or (match-string 2)
 401                     (string= (match-string 1) "U ")
 402                     (string= (match-string 1) "P "))
 403                 (vc-file-setprop file 'vc-state 'up-to-date)
 404                 (vc-file-setprop file 'vc-checkout-time
 405                                  (nth 5 (file-attributes file)))
 406                 0);; indicate success to the caller
 407                ;; Merge successful, but our own changes are still in the file
 408                ((string= (match-string 1) "M ")
 409                 (vc-file-setprop file 'vc-state 'edited)
 410                 0);; indicate success to the caller
 411                ;; Conflicts detected!
 412                (t
 413                 (vc-file-setprop file 'vc-state 'edited)
 414                 1);; signal the error to the caller
 415                )
 416             (pop-to-buffer "*vc*")
 417             (error "Couldn't analyze mcvs update result")))
 418       (message "Merging changes into %s...done" file))))
 419
 420 ;;;
 421 ;;; History functions
 422 ;;;
 423
 424 (defun vc-mcvs-print-log (file &optional buffer)
 425   "Get change log associated with FILE."
 426   (let ((default-directory (vc-mcvs-root file)))
 427     ;; Run the command from the root dir so that `mcvs filt' returns
 428     ;; valid relative names.
 429     (vc-mcvs-command
 430      buffer
 431      (if (and (vc-stay-local-p file) (fboundp 'start-process)) 'async 0)
 432      file "log")))
 433
 434 (defun vc-mcvs-diff (file &optional oldvers newvers buffer)
 435   "Get a difference report using Meta-CVS between two versions of FILE."
 436   (if (string= (vc-workfile-version file) "0")
 437       ;; This file is added but not yet committed; there is no master file.
 438       (if (or oldvers newvers)
 439           (error "No revisions of %s exist" file)
 440         ;; We regard this as "changed".
 441         ;; Diff it against /dev/null.
 442         ;; Note: this is NOT a "mcvs diff".
 443         (apply 'vc-do-command (or buffer "*vc-diff*")
 444                1 "diff" file
 445                (append (vc-switches nil 'diff) '("/dev/null")))
 446         ;; Even if it's empty, it's locally modified.
 447         1)
 448     (let* ((async (and (not vc-disable-async-diff)
 449                        (vc-stay-local-p file)
 450                        (fboundp 'start-process)))
 451            ;; Run the command from the root dir so that `mcvs filt' returns
 452            ;; valid relative names.
 453            (default-directory (vc-mcvs-root file))
 454            (status
 455             (apply 'vc-mcvs-command (or buffer "*vc-diff*")
 456                    (if async 'async 1)
 457                    file "diff"
 458                    (and oldvers (concat "-r" oldvers))
 459                    (and newvers (concat "-r" newvers))
 460                    (vc-switches 'MCVS 'diff))))
 461       (if async 1 status))))           ; async diff, pessimistic assumption.
 462
 463 (defun vc-mcvs-diff-tree (dir &optional rev1 rev2)
 464   "Diff all files at and below DIR."
 465   (with-current-buffer "*vc-diff*"
 466     ;; Run the command from the root dir so that `mcvs filt' returns
 467     ;; valid relative names.
 468     (setq default-directory (vc-mcvs-root dir))
 469     ;; cvs diff: use a single call for the entire tree
 470     (let ((coding-system-for-read (or coding-system-for-read 'undecided)))
 471       (apply 'vc-mcvs-command "*vc-diff*" 1 dir "diff"
 472              (and rev1 (concat "-r" rev1))
 473              (and rev2 (concat "-r" rev2))
 474              (vc-switches 'MCVS 'diff)))))
 475
 476 (defun vc-mcvs-annotate-command (file buffer &optional version)
 477   "Execute \"mcvs annotate\" on FILE, inserting the contents in BUFFER.
 478 Optional arg VERSION is a version to annotate from."
 479   (vc-mcvs-command
 480    buffer
 481    (if (and (vc-stay-local-p file) (fboundp 'start-process)) 'async 0)
 482    file "annotate" (if version (concat "-r" version)))
 483   (with-current-buffer buffer
 484     (goto-char (point-min))
 485     (re-search-forward "^[0-9]")
 486     (delete-region (point-min) (1- (point)))))
 487
 488 (defalias 'vc-mcvs-annotate-current-time 'vc-cvs-annotate-current-time)
 489 (defalias 'vc-mcvs-annotate-time 'vc-cvs-annotate-time)
 490
 491 ;;;
 492 ;;; Snapshot system
 493 ;;;
 494
 495 (defun vc-mcvs-create-snapshot (dir name branchp)
 496   "Assign to DIR's current version a given NAME.
 497 If BRANCHP is non-nil, the name is created as a branch (and the current
 498 workspace is immediately moved to that new branch)."
 499   (if (not branchp)
 500       (vc-mcvs-command nil 0 dir "tag" "-c" name)
 501     (vc-mcvs-command nil 0 dir "branch" name)
 502     (vc-mcvs-command nil 0 dir "switch" name)))
 503
 504 (defun vc-mcvs-retrieve-snapshot (dir name update)
 505   "Retrieve a snapshot at and below DIR.
 506 NAME is the name of the snapshot; if it is empty, do a `cvs update'.
 507 If UPDATE is non-nil, then update (resynch) any affected buffers."
 508   (with-current-buffer (get-buffer-create "*vc*")
 509     (let ((default-directory dir)
 510           (sticky-tag))
 511       (erase-buffer)
 512       (if (or (not name) (string= name ""))
 513           (vc-mcvs-command t 0 nil "update")
 514         (vc-mcvs-command t 0 nil "update" "-r" name)
 515         (setq sticky-tag name))
 516       (when update
 517         (goto-char (point-min))
 518         (while (not (eobp))
 519           (if (looking-at "\\([CMUP]\\) \\(.*\\)")
 520               (let* ((file (expand-file-name (match-string 2) dir))
 521                      (state (match-string 1))
 522                      (buffer (find-buffer-visiting file)))
 523                 (when buffer
 524                   (cond
 525                    ((or (string= state "U")
 526                         (string= state "P"))
 527                     (vc-file-setprop file 'vc-state 'up-to-date)
 528                     (vc-file-setprop file 'vc-workfile-version nil)
 529                     (vc-file-setprop file 'vc-checkout-time
 530                                      (nth 5 (file-attributes file))))
 531                    ((or (string= state "M")
 532                         (string= state "C"))
 533                     (vc-file-setprop file 'vc-state 'edited)
 534                     (vc-file-setprop file 'vc-workfile-version nil)
 535                     (vc-file-setprop file 'vc-checkout-time 0)))
 536                   (vc-file-setprop file 'vc-mcvs-sticky-tag sticky-tag)
 537                   (vc-resynch-buffer file t t))))
 538           (forward-line 1))))))
 539
 540
 541 ;;;
 542 ;;; Miscellaneous
 543 ;;;
 544
 545 (defalias 'vc-mcvs-make-version-backups-p 'vc-stay-local-p
 546   "Return non-nil if version backups should be made for FILE.")
 547 (defalias 'vc-mcvs-check-headers 'vc-cvs-check-headers)
 548
 549
 550 ;;;
 551 ;;; Internal functions
 552 ;;;
 553
 554 (defun vc-mcvs-command (buffer okstatus file &rest flags)
 555   "A wrapper around `vc-do-command' for use in vc-mcvs.el.
 556 The difference to vc-do-command is that this function always invokes `mcvs',
 557 and that it passes `vc-mcvs-global-switches' to it before FLAGS."
 558   (let ((args (append '("--error-terminate")
 559                       (if (stringp vc-mcvs-global-switches)
 560                           (cons vc-mcvs-global-switches flags)
 561                         (append vc-mcvs-global-switches flags)))))
 562     (if (not (member (car flags) '("diff" "log" "status")))
 563         ;; No need to filter: do it the easy way.
 564         (apply 'vc-do-command buffer okstatus "mcvs" file args)
 565       ;; We need to filter the output.
 566       ;; The output of the filter uses filenames relative to the root,
 567       ;; so we need to change the default-directory.
 568       ;; (assert (equal default-directory (vc-mcvs-root file)))
 569       (vc-do-command
 570        buffer okstatus "sh" nil "-c"
 571        (concat "mcvs "
 572                (mapconcat
 573                 'shell-quote-argument
 574                 (append (remq nil args)
 575                         (if file (list (file-relative-name file))))
 576                 " ")
 577                " | mcvs filt")))))
 578
 579 (defun vc-mcvs-repository-hostname (dirname)
 580   (vc-cvs-repository-hostname (vc-mcvs-root dirname)))
 581
 582 (defun vc-mcvs-dir-state-heuristic (dir)
 583   "Find the Meta-CVS state of all files in DIR, using only local information."
 584   (with-temp-buffer
 585     (vc-cvs-get-entries dir)
 586     (goto-char (point-min))
 587     (while (not (eobp))
 588       ;; Meta-MCVS-removed files are not taken under VC control.
 589       (when (looking-at "/\\([^/]*\\)/[^/-]")
 590         (let ((file (expand-file-name (match-string 1) dir)))
 591           (unless (vc-file-getprop file 'vc-state)
 592             (vc-cvs-parse-entry file t))))
 593       (forward-line 1))))
 594
 595 (defalias 'vc-mcvs-valid-symbolic-tag-name-p 'vc-cvs-valid-symbolic-tag-name-p)
 596 (defalias 'vc-mcvs-valid-version-number-p 'vc-cvs-valid-version-number-p)
 597
 598 (provide 'vc-mcvs)
 599
 600 ;; arch-tag: a39c7c1c-5247-429d-88df-dd7187d2e704
 601 ;;; vc-mcvs.el ends here