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.
77A 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.
106This 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.
207COMMENT can be used to provide an initial description of FILE.
208
209`vc-register-switches' and `vc-mcvs-register-switches' are passed to
210the 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.
258This 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.
362The 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.
478Optional 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.
497If BRANCHP is non-nil, the name is created as a branch (and the current
498workspace 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.
506NAME is the name of the snapshot; if it is empty, do a `cvs update'.
507If 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.
556The difference to vc-do-command is that this function always invokes `mcvs',
557and 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
602