code.delx.au - gnu-emacs/blob - lisp/obsolete/vc-mcvs.el

   1 ;;; vc-mcvs.el --- VC backend for the Meta-CVS version-control system
   2
   3 ;; Copyright (C) 2003-2011
   4 ;;   Free Software Foundation, Inc.
   5
   6 ;; Author:      FSF (see vc.el for full credits)
   7 ;; Maintainer:  None
   8
   9 ;; This file is part of GNU Emacs.
  10
  11 ;; GNU Emacs is free software: you can redistribute it and/or modify
  12 ;; it under the terms of the GNU General Public License as published by
  13 ;; the Free Software Foundation, either version 3 of the License, or
  14 ;; (at your option) any later version.
  15
  16 ;; GNU Emacs is distributed in the hope that it will be useful,
  17 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 ;; GNU General Public License for more details.
  20
  21 ;; You should have received a copy of the GNU General Public License
  22 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  23
  24 ;;; Commentary:
  25
  26 ;; ********** READ THIS! **********
  27 ;;
  28 ;; This file apparently does not work with the new (as of Emacs 23)
  29 ;; VC code.  Use at your own risk.  Please contact emacs-devel if you
  30 ;; can maintain this file and update it to work correctly.
  31 ;;
  32 ;; ********** READ THIS! **********
  33
  34 ;; This file has been obsolete and unsupported since Emacs 23.1.
  35
  36
  37 ;; The home page of the Meta-CVS version control system is at
  38 ;;
  39 ;;      http://users.footprints.net/~kaz/mcvs.html
  40 ;;
  41 ;; This is derived from vc-cvs.el as follows:
  42 ;; - cp vc-cvs.el vc-mcvs.el
  43 ;; - Replace CVS/ with MCVS/CVS/
  44 ;; - Replace 'CVS with 'MCVS
  45 ;; - Replace -cvs- with -mcvs-
  46 ;; - Replace most of the rest of CVS to Meta-CVS
  47 ;;
  48 ;; Then of course started the hacking.  Only a small part of the code
  49 ;; has been touched and not much more than that was tested, so if
  50 ;; you bump into a bug, don't be surprised: just report it to me.
  51 ;;
  52 ;; What has been partly tested:
  53 ;; - C-x v v to start editing a file that was checked out with CVSREAD on.
  54 ;; - C-x v v to commit a file
  55 ;; - C-x v =
  56 ;; - C-x v l
  57 ;; - C-x v i
  58 ;; - C-x v g
  59 ;; - M-x vc-rename-file RET
  60
  61 ;;; Bugs:
  62
  63 ;; - Retrieving tags doesn't filter `cvs update' output and thus
  64 ;;   parses bogus filenames.  Don't know if it harms.
  65
  66 ;;; Code:
  67
  68 (eval-when-compile (require 'vc))
  69 (require 'vc-cvs)
  70
  71 ;;;
  72 ;;; Customization options
  73 ;;;
  74
  75 (defcustom vc-mcvs-global-switches nil
  76   "Global switches to pass to any Meta-CVS command."
  77   :type '(choice (const :tag "None" nil)
  78                  (string :tag "Argument String")
  79                  (repeat :tag "Argument List" :value ("") string))
  80   :version "22.1"
  81   :group 'vc)
  82
  83 (defcustom vc-mcvs-register-switches nil
  84   "Switches for registering a file into Meta-CVS.
  85 A string or list of strings passed to the checkin program by
  86 \\[vc-register].  If nil, use the value of `vc-register-switches'.
  87 If t, use no switches."
  88   :type '(choice (const :tag "Unspecified" nil)
  89                  (const :tag "None" t)
  90                  (string :tag "Argument String")
  91                  (repeat :tag "Argument List" :value ("") string))
  92   :version "22.1"
  93   :group 'vc)
  94
  95 (defcustom vc-mcvs-diff-switches nil
  96   "String or list of strings specifying switches for Meta-CVS diff under VC.
  97 If nil, use the value of `vc-diff-switches'.  If t, use no switches."
  98   :type '(choice (const :tag "Unspecified" nil)
  99                  (const :tag "None" t)
 100                  (string :tag "Argument String")
 101                  (repeat :tag "Argument List" :value ("") string))
 102   :version "22.1"
 103   :group 'vc)
 104
 105 (defcustom vc-mcvs-header vc-cvs-header
 106   "Header keywords to be inserted by `vc-insert-headers'."
 107   :version "24.1"     ; no longer consult the obsolete vc-header-alist
 108   :type '(repeat string)
 109   :group 'vc)
 110
 111 (defcustom vc-mcvs-use-edit vc-cvs-use-edit
 112   "Non-nil means to use `cvs edit' to \"check out\" a file.
 113 This is only meaningful if you don't use the implicit checkout model
 114 \(i.e. if you have $CVSREAD set)."
 115   :type 'boolean
 116   :version "22.1"
 117   :group 'vc)
 118
 119 ;;; Properties of the backend
 120
 121 (defalias 'vc-mcvs-revision-granularity 'vc-cvs-revision-granularity)
 122 (defalias 'vc-mcvs-checkout-model 'vc-cvs-checkout-model)
 123
 124 ;;;
 125 ;;; State-querying functions
 126 ;;;
 127
 128 ;;;###autoload (defun vc-mcvs-registered (file)
 129 ;;;###autoload   (if (vc-find-root file "MCVS/CVS")
 130 ;;;###autoload       (progn
 131 ;;;###autoload         (load "vc-mcvs")
 132 ;;;###autoload         (vc-mcvs-registered file))))
 133
 134 (defun vc-mcvs-root (file)
 135   "Return the root directory of a Meta-CVS project, if any."
 136   (or (vc-file-getprop file 'mcvs-root)
 137       (vc-file-setprop file 'mcvs-root (vc-find-root file "MCVS/CVS"))))
 138
 139 (defun vc-mcvs-read (file)
 140   (if (file-readable-p file)
 141       (with-temp-buffer
 142         (insert-file-contents file)
 143         (goto-char (point-min))
 144         (read (current-buffer)))))
 145
 146 (defun vc-mcvs-map-file (dir file)
 147   (let ((map (vc-mcvs-read (expand-file-name "MCVS/MAP" dir)))
 148         inode)
 149     (dolist (x map inode)
 150       (if (equal (nth 2 x) file) (setq inode (nth 1 x))))))
 151
 152 (defun vc-mcvs-registered (file)
 153   (let (root inode cvsfile)
 154     (when (and (setq root (vc-mcvs-root file))
 155                (setq inode (vc-mcvs-map-file
 156                             root (file-relative-name file root))))
 157       (vc-file-setprop file 'mcvs-inode inode)
 158       ;; Avoid calling `mcvs diff' in vc-workfile-unchanged-p.
 159       (vc-file-setprop file 'vc-checkout-time
 160                        (if (vc-cvs-registered
 161                             (setq cvsfile (expand-file-name inode root)))
 162                            (vc-file-getprop cvsfile 'vc-checkout-time)
 163                          ;; The file might not be registered yet because
 164                          ;; of lazy-adding.
 165                          0))
 166       t)))
 167
 168 (defun vc-mcvs-state (file)
 169   ;; This would assume the Meta-CVS sandbox is synchronized.
 170   ;; (vc-mcvs-cvs state file))
 171   "Meta-CVS-specific version of `vc-state'."
 172   (if (vc-stay-local-p file)
 173       (let ((state (vc-file-getprop file 'vc-state)))
 174         ;; If we should stay local, use the heuristic but only if
 175         ;; we don't have a more precise state already available.
 176         (if (memq state '(up-to-date edited))
 177             (vc-mcvs-state-heuristic file)
 178           state))
 179     (with-temp-buffer
 180       (setq default-directory (vc-mcvs-root file))
 181       (vc-mcvs-command t 0 file "status")
 182       (vc-cvs-parse-status t))))
 183
 184
 185 (defalias 'vc-mcvs-state-heuristic 'vc-cvs-state-heuristic)
 186
 187 (defun vc-mcvs-working-revision (file)
 188   (vc-cvs-working-revision
 189    (expand-file-name (vc-file-getprop file 'mcvs-inode)
 190                      (vc-file-getprop file 'mcvs-root))))
 191
 192 ;;;
 193 ;;; State-changing functions
 194 ;;;
 195
 196 (defun vc-mcvs-register (files &optional rev comment)
 197   "Register FILES into the Meta-CVS version-control system.
 198 COMMENT can be used to provide an initial description of FILE.
 199 Passes either `vc-mcvs-register-switches' or `vc-register-switches'
 200 to the Meta-CVS command."
 201   ;; FIXME: multiple-file case should be made to work.
 202   (if (> (length files) 1) (error "Registering filesets is not yet supported"))
 203   (let* ((file (car files))
 204          (filename (file-name-nondirectory file))
 205          (extpos (string-match "\\." filename))
 206          (ext (if extpos (substring filename (1+ extpos))))
 207          (root (vc-mcvs-root file))
 208          (types-file (expand-file-name "MCVS/TYPES" root))
 209          (map-file (expand-file-name "MCVS/MAP" root))
 210          (types (vc-mcvs-read types-file)))
 211     ;; Make sure meta files like MCVS/MAP are not read-only (happens with
 212     ;; CVSREAD) since Meta-CVS doesn't pay attention to it at all and goes
 213     ;; belly-up.
 214     (unless (file-writable-p map-file)
 215       (vc-checkout map-file t))
 216     (unless (or (file-writable-p types-file) (not (file-exists-p types-file)))
 217       (vc-checkout types-file t))
 218     ;; Make sure the `mcvs add' will not fire up the CVSEDITOR
 219     ;; to add a rule for the given file's extension.
 220     (when (and ext (not (assoc ext types)))
 221       (let ((type (completing-read "Type to use (default): "
 222                                    '("default" "name-only" "keep-old"
 223                                      "binary" "value-only")
 224                                    nil t nil nil "default")))
 225         (push (list ext (make-symbol (upcase (concat ":" type)))) types)
 226         (setq types (sort types (lambda (x y) (string< (car x) (car y)))))
 227         (with-current-buffer (find-file-noselect types-file)
 228           (erase-buffer)
 229           (pp types (current-buffer))
 230           (save-buffer)
 231           (unless (get-buffer-window (current-buffer) t)
 232             (kill-buffer (current-buffer))))))
 233     ;; Now do the ADD.
 234     (prog1 (apply 'vc-mcvs-command nil 0 file
 235                   "add"
 236                   (and comment (string-match "[^\t\n ]" comment)
 237                        (concat "-m" comment))
 238                   (vc-switches 'MCVS 'register))
 239       ;; I'm not sure exactly why, but if we don't setup the inode and root
 240       ;; prop of the file, things break later on in vc-mode-line that
 241       ;; ends up calling vc-mcvs-working-revision.
 242       ;; We also need to set vc-checkout-time so that vc-workfile-unchanged-p
 243       ;; doesn't try to call `mcvs diff' on the file.
 244       (vc-mcvs-registered file))))
 245
 246 (defalias 'vc-mcvs-responsible-p 'vc-mcvs-root
 247   "Return non-nil if CVS thinks it is responsible for FILE.")
 248
 249 (defalias 'vc-cvs-could-register 'vc-cvs-responsible-p
 250   "Return non-nil if FILE could be registered in Meta-CVS.
 251 This is only possible if Meta-CVS is responsible for FILE's directory.")
 252
 253 (defun vc-mcvs-checkin (files rev comment)
 254   "Meta-CVS-specific version of `vc-backend-checkin'."
 255   (unless (or (not rev) (vc-mcvs-valid-revision-number-p rev))
 256     (if (not (vc-mcvs-valid-symbolic-tag-name-p rev))
 257         (error "%s is not a valid symbolic tag name" rev)
 258       ;; If the input revision is a valid symbolic tag name, we create it
 259       ;; as a branch, commit and switch to it.
 260       ;; This file-specific form of branching is deprecated.
 261       ;; We can't use `mcvs branch' and `mcvs switch' because they cannot
 262       ;; be applied just to this one file.
 263       (apply 'vc-mcvs-command nil 0 files "tag" "-b" (list rev))
 264       (apply 'vc-mcvs-command nil 0 files "update" "-r" (list rev))
 265       (mapc (lambda (file) (vc-file-setprop file 'vc-mcvs-sticky-tag rev))
 266             files)
 267       (setq rev nil)))
 268   ;; This commit might cvs-commit several files (e.g. MAP and TYPES)
 269   ;; so using numbered revs here is dangerous and somewhat meaningless.
 270   (when rev (error "Cannot commit to a specific revision number"))
 271   (let ((status (apply 'vc-mcvs-command nil 1 files
 272                        "ci" "-m" comment
 273                        (vc-switches 'MCVS 'checkin))))
 274     (set-buffer "*vc*")
 275     (goto-char (point-min))
 276     (when (not (zerop status))
 277       ;; Check checkin problem.
 278       (cond
 279        ((re-search-forward "Up-to-date check failed" nil t)
 280         (mapc (lambda (file) (vc-file-setprop file 'vc-state 'needs-merge))
 281               files)
 282         (error "%s" (substitute-command-keys
 283                 (concat "Up-to-date check failed: "
 284                         "type \\[vc-next-action] to merge in changes"))))
 285        (t
 286         (pop-to-buffer (current-buffer))
 287         (goto-char (point-min))
 288         (shrink-window-if-larger-than-buffer)
 289         (error "Check-in failed"))))
 290     ;; Single-file commit?  Then update the revision by parsing the buffer.
 291     ;; Otherwise we can't necessarily tell what goes with what; clear
 292     ;; its properties so they have to be refetched.
 293     (if (= (length files) 1)
 294         (vc-file-setprop
 295          (car files) 'vc-working-revision
 296          (vc-parse-buffer "^\\(new\\|initial\\) revision: \\([0-9.]+\\)" 2))
 297       (mapc (lambda (file) (vc-file-clearprops file)) files))
 298     ;; Anyway, forget the checkout model of the file, because we might have
 299     ;; guessed wrong when we found the file.  After commit, we can
 300     ;; tell it from the permissions of the file (see
 301     ;; vc-mcvs-checkout-model).
 302     (mapc (lambda (file) (vc-file-setprop file 'vc-checkout-model nil))
 303             files)
 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 files "update" "-A"))))
 309
 310 (defun vc-mcvs-find-revision (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-mcvs-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 (list 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 revision (or recreate the file).
 337     (vc-file-setprop file 'vc-working-revision 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 working revision it was based on."
 353   (vc-default-revert 'MCVS file contents-done)
 354   (unless (eq (vc-mcvs-checkout-model (list 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-revision &optional second-revision)
 361   "Merge changes into current working copy of FILE.
 362 The changes are between FIRST-REVISION and SECOND-REVISION."
 363   (vc-mcvs-command nil 0 file
 364                    "update" "-kk"
 365                    (concat "-j" first-revision)
 366                    (concat "-j" second-revision))
 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-working-revision 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 working revision
 385     (if (re-search-forward
 386          "^Merging differences between [0-9.]* and \\([0-9.]*\\) into" nil t)
 387         (vc-file-setprop file 'vc-working-revision (match-string 1))
 388       (vc-file-setprop file 'vc-working-revision 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 (defun vc-mcvs-modify-change-comment (files rev comment)
 421   "Modify the change comments for FILES on a specified REV.
 422 Will fail unless you have administrative privileges on the repo."
 423   (vc-mcvs-command nil 0 files "rcs" (concat "-m" comment ":" rev)))
 424
 425
 426 ;;;
 427 ;;; History functions
 428 ;;;
 429
 430 (defun vc-mcvs-print-log (files &optional buffer)
 431   "Get change log associated with FILES."
 432   (let ((default-directory (vc-mcvs-root (car files))))
 433     ;; Run the command from the root dir so that `mcvs filt' returns
 434     ;; valid relative names.
 435     (vc-mcvs-command
 436      buffer
 437      (if (vc-stay-local-p files) 'async 0)
 438      files "log")))
 439
 440 (defun vc-mcvs-diff (files &optional oldvers newvers buffer)
 441   "Get a difference report using Meta-CVS between two revisions of FILES."
 442     (let* ((async (and (not vc-disable-async-diff)
 443                        (vc-stay-local-p files)))
 444            ;; Run the command from the root dir so that `mcvs filt' returns
 445            ;; valid relative names.
 446            (default-directory (vc-mcvs-root (car files)))
 447            (status
 448             (apply 'vc-mcvs-command (or buffer "*vc-diff*")
 449                    (if async 'async 1)
 450                    files "diff"
 451                    (and oldvers (concat "-r" oldvers))
 452                    (and newvers (concat "-r" newvers))
 453                    (vc-switches 'MCVS 'diff))))
 454       (if async 1 status)))            ; async diff, pessimistic assumption.
 455
 456 (defun vc-mcvs-annotate-command (file buffer &optional revision)
 457   "Execute \"mcvs annotate\" on FILE, inserting the contents in BUFFER.
 458 Optional arg REVISION is a revision to annotate from."
 459   (vc-mcvs-command
 460    buffer
 461    (if (vc-stay-local-p file) 'async 0)
 462    file "annotate" (if revision (concat "-r" revision)))
 463   (with-current-buffer buffer
 464     (goto-char (point-min))
 465     (re-search-forward "^[0-9]")
 466     (delete-region (point-min) (1- (point)))))
 467
 468 (defalias 'vc-mcvs-annotate-current-time 'vc-cvs-annotate-current-time)
 469 (defalias 'vc-mcvs-annotate-time 'vc-cvs-annotate-time)
 470
 471 ;;;
 472 ;;; Tag system
 473 ;;;
 474
 475 (defun vc-mcvs-create-tag (dir name branchp)
 476   "Assign to DIR's current revision a given NAME.
 477 If BRANCHP is non-nil, the name is created as a branch (and the current
 478 workspace is immediately moved to that new branch)."
 479   (if (not branchp)
 480       (vc-mcvs-command nil 0 dir "tag" "-c" name)
 481     (vc-mcvs-command nil 0 dir "branch" name)
 482     (vc-mcvs-command nil 0 dir "switch" name)))
 483
 484 (defun vc-mcvs-retrieve-tag (dir name update)
 485   "Retrieve a tag at and below DIR.
 486 NAME is the name of the tag; if it is empty, do a `cvs update'.
 487 If UPDATE is non-nil, then update (resynch) any affected buffers."
 488   (with-current-buffer (get-buffer-create "*vc*")
 489     (let ((default-directory dir)
 490           (sticky-tag))
 491       (erase-buffer)
 492       (if (or (not name) (string= name ""))
 493           (vc-mcvs-command t 0 nil "update")
 494         (vc-mcvs-command t 0 nil "update" "-r" name)
 495         (setq sticky-tag name))
 496       (when update
 497         (goto-char (point-min))
 498         (while (not (eobp))
 499           (if (looking-at "\\([CMUP]\\) \\(.*\\)")
 500               (let* ((file (expand-file-name (match-string 2) dir))
 501                      (state (match-string 1))
 502                      (buffer (find-buffer-visiting file)))
 503                 (when buffer
 504                   (cond
 505                    ((or (string= state "U")
 506                         (string= state "P"))
 507                     (vc-file-setprop file 'vc-state 'up-to-date)
 508                     (vc-file-setprop file 'vc-working-revision nil)
 509                     (vc-file-setprop file 'vc-checkout-time
 510                                      (nth 5 (file-attributes file))))
 511                    ((or (string= state "M")
 512                         (string= state "C"))
 513                     (vc-file-setprop file 'vc-state 'edited)
 514                     (vc-file-setprop file 'vc-working-revision nil)
 515                     (vc-file-setprop file 'vc-checkout-time 0)))
 516                   (vc-file-setprop file 'vc-mcvs-sticky-tag sticky-tag)
 517                   (vc-resynch-buffer file t t))))
 518           (forward-line 1))))))
 519
 520
 521 ;;;
 522 ;;; Miscellaneous
 523 ;;;
 524
 525 (defalias 'vc-mcvs-make-version-backups-p 'vc-stay-local-p
 526   "Return non-nil if version backups should be made for FILE.")
 527 (defalias 'vc-mcvs-check-headers 'vc-cvs-check-headers)
 528
 529
 530 ;;;
 531 ;;; Internal functions
 532 ;;;
 533
 534 (defun vc-mcvs-command (buffer okstatus file &rest flags)
 535   "A wrapper around `vc-do-command' for use in vc-mcvs.el.
 536 The difference to vc-do-command is that this function always invokes `mcvs',
 537 and that it passes `vc-mcvs-global-switches' to it before FLAGS."
 538   (let ((args (append '("--error-terminate")
 539                       (if (stringp vc-mcvs-global-switches)
 540                           (cons vc-mcvs-global-switches flags)
 541                         (append vc-mcvs-global-switches flags)))))
 542     (if (not (member (car flags) '("diff" "log" "status")))
 543         ;; No need to filter: do it the easy way.
 544         (apply 'vc-do-command (or buffer "*vc*") okstatus "mcvs" file args)
 545       ;; We need to filter the output.
 546       ;; The output of the filter uses filenames relative to the root,
 547       ;; so we need to change the default-directory.
 548       ;; (assert (equal default-directory (vc-mcvs-root file)))
 549       (vc-do-command
 550        (or buffer "*vc*") okstatus "sh" nil "-c"
 551        (concat "mcvs "
 552                (mapconcat
 553                 'shell-quote-argument
 554                 (append (remq nil args)
 555                         (if file (list (file-relative-name file))))
 556                 " ")
 557                " | mcvs filt")))))
 558
 559 (defun vc-mcvs-repository-hostname (dirname)
 560   (vc-cvs-repository-hostname (vc-mcvs-root dirname)))
 561
 562 (defun vc-mcvs-dir-state-heuristic (dir)
 563   "Find the Meta-CVS state of all files in DIR, using only local information."
 564   (with-temp-buffer
 565     (vc-cvs-get-entries dir)
 566     (goto-char (point-min))
 567     (while (not (eobp))
 568       ;; Meta-MCVS-removed files are not taken under VC control.
 569       (when (looking-at "/\\([^/]*\\)/[^/-]")
 570         (let ((file (expand-file-name (match-string 1) dir)))
 571           (unless (vc-file-getprop file 'vc-state)
 572             (vc-cvs-parse-entry file t))))
 573       (forward-line 1))))
 574
 575 (defalias 'vc-mcvs-valid-symbolic-tag-name-p 'vc-cvs-valid-symbolic-tag-name-p)
 576 (defalias 'vc-mcvs-valid-revision-number-p 'vc-cvs-valid-revision-number-p)
 577
 578 (provide 'vc-mcvs)
 579
 580 ;; ********** READ THIS! **********
 581 ;;
 582 ;; This file apparently does not work with the new (as of Emacs 23)
 583 ;; VC code.  Use at your own risk.  Please contact emacs-devel if you
 584 ;; can maintain this file and update it to work correctly.
 585 ;;
 586 ;; ********** READ THIS! **********
 587
 588 ;;; vc-mcvs.el ends here