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aae56ea7 | 1 | ;;; vc-hooks.el --- resident support for version-control |
594722a8 | 2 | |
38179d42 | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995 Free Software Foundation, Inc. |
594722a8 ER |
4 | |
5 | ;; Author: Eric S. Raymond <esr@snark.thyrsus.com> | |
f2ee4191 RS |
6 | ;; Modified by: |
7 | ;; Per Cederqvist <ceder@lysator.liu.se> | |
8 | ;; Andre Spiegel <spiegel@berlin.informatik.uni-stuttgart.de> | |
594722a8 ER |
9 | |
10 | ;; This file is part of GNU Emacs. | |
11 | ||
12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
13 | ;; it under the terms of the GNU General Public License as published by | |
14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
15 | ;; any later version. | |
16 | ||
17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
20 | ;; GNU General Public License for more details. | |
21 | ||
22 | ;; You should have received a copy of the GNU General Public License | |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to | |
24 | ;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. | |
25 | ||
26 | ;;; Commentary: | |
27 | ||
f2ee4191 RS |
28 | ;; This is the always-loaded portion of VC. |
29 | ;; It takes care VC-related activities that are done when you visit a file, | |
30 | ;; so that vc.el itself is loaded only when you use a VC command. | |
594722a8 ER |
31 | ;; See the commentary of vc.el. |
32 | ||
33 | ;;; Code: | |
34 | ||
e1c0c2d1 KH |
35 | ;; Customization Variables (the rest is in vc.el) |
36 | ||
37 | (defvar vc-default-back-end nil | |
38 | "*Back-end actually used by this interface; may be SCCS or RCS. | |
39 | The value is only computed when needed to avoid an expensive search.") | |
40 | ||
0b086efb RS |
41 | (defvar vc-handle-cvs t |
42 | "*If non-nil, use VC for files managed with CVS. | |
43 | If it is nil, don't use VC for those files.") | |
44 | ||
31888047 AS |
45 | (defvar vc-rcsdiff-knows-brief nil |
46 | "*Indicates whether rcsdiff understands the --brief option. | |
47 | The value is either `yes', `no', or nil. If it is nil, VC tries | |
48 | to use --brief and sets this variable to remember whether it worked.") | |
49 | ||
e1c0c2d1 KH |
50 | (defvar vc-path |
51 | (if (file-directory-p "/usr/sccs") | |
52 | '("/usr/sccs") | |
53 | nil) | |
54 | "*List of extra directories to search for version control commands.") | |
55 | ||
594722a8 ER |
56 | (defvar vc-master-templates |
57 | '(("%sRCS/%s,v" . RCS) ("%s%s,v" . RCS) ("%sRCS/%s" . RCS) | |
174edc13 RS |
58 | ("%sSCCS/s.%s" . SCCS) ("%ss.%s". SCCS) |
59 | vc-find-cvs-master) | |
594722a8 ER |
60 | "*Where to look for version-control master files. |
61 | The first pair corresponding to a given back end is used as a template | |
62 | when creating new masters.") | |
63 | ||
64 | (defvar vc-make-backup-files nil | |
5032bd23 | 65 | "*If non-nil, backups of registered files are made as with other files. |
9228cfac | 66 | If nil (the default), files covered by version control don't get backups.") |
594722a8 | 67 | |
b8063212 AS |
68 | (defvar vc-follow-symlinks 'ask |
69 | "*Indicates what to do if you visit a symbolic link to a file | |
70 | that is under version control. Editing such a file through the | |
71 | link bypasses the version control system, which is dangerous and | |
72 | probably not what you want. | |
73 | If this variable is t, VC follows the link and visits the real file, | |
74 | telling you about it in the echo area. If it is `ask', VC asks for | |
75 | confirmation whether it should follow the link. If nil, the link is | |
76 | visited and a warning displayed.") | |
77 | ||
624c0e9d RS |
78 | (defvar vc-display-status t |
79 | "*If non-nil, display revision number and lock status in modeline. | |
198d5c00 RS |
80 | Otherwise, not displayed.") |
81 | ||
e1c0c2d1 | 82 | (defvar vc-consult-headers t |
95420811 | 83 | "*If non-nil, identify work files by searching for version headers.") |
e1c0c2d1 | 84 | |
e1c0c2d1 KH |
85 | (defvar vc-keep-workfiles t |
86 | "*If non-nil, don't delete working files after registering changes. | |
87 | If the back-end is CVS, workfiles are always kept, regardless of the | |
88 | value of this flag.") | |
89 | ||
e66eac08 | 90 | (defvar vc-mistrust-permissions nil |
95420811 AS |
91 | "*If non-nil, don't assume that permissions and ownership track |
92 | version-control status. If nil, do rely on the permissions. | |
93 | See also variable `vc-consult-headers'.") | |
e66eac08 AS |
94 | |
95 | (defun vc-mistrust-permissions (file) | |
96 | ;; Access function to the above. | |
97 | (or (eq vc-mistrust-permissions 't) | |
98 | (and vc-mistrust-permissions | |
99 | (funcall vc-mistrust-permissions | |
100 | (vc-backend-subdirectory-name file))))) | |
101 | ||
594722a8 | 102 | ;; Tell Emacs about this new kind of minor mode |
7bc2b98b ER |
103 | (if (not (assoc 'vc-mode minor-mode-alist)) |
104 | (setq minor-mode-alist (cons '(vc-mode vc-mode) | |
594722a8 ER |
105 | minor-mode-alist))) |
106 | ||
7bc2b98b | 107 | (make-variable-buffer-local 'vc-mode) |
c43e436c | 108 | (put 'vc-mode 'permanent-local t) |
594722a8 ER |
109 | |
110 | ;; We need a notion of per-file properties because the version | |
f2ee4191 RS |
111 | ;; control state of a file is expensive to derive --- we compute |
112 | ;; them when the file is initially found, keep them up to date | |
113 | ;; during any subsequent VC operations, and forget them when | |
114 | ;; the buffer is killed. | |
594722a8 | 115 | |
80169ab5 ER |
116 | (defmacro vc-error-occurred (&rest body) |
117 | (list 'condition-case nil (cons 'progn (append body '(nil))) '(error t))) | |
118 | ||
594722a8 ER |
119 | (defvar vc-file-prop-obarray [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] |
120 | "Obarray for per-file properties.") | |
121 | ||
f2ee4191 RS |
122 | (defvar vc-buffer-backend t) |
123 | (make-variable-buffer-local 'vc-buffer-backend) | |
124 | ||
594722a8 ER |
125 | (defun vc-file-setprop (file property value) |
126 | ;; set per-file property | |
127 | (put (intern file vc-file-prop-obarray) property value)) | |
128 | ||
129 | (defun vc-file-getprop (file property) | |
130 | ;; get per-file property | |
131 | (get (intern file vc-file-prop-obarray) property)) | |
132 | ||
e1c0c2d1 KH |
133 | (defun vc-file-clearprops (file) |
134 | ;; clear all properties of a given file | |
135 | (setplist (intern file vc-file-prop-obarray) nil)) | |
f2ee4191 | 136 | |
02d383eb RS |
137 | ;;; Functions that determine property values, by examining the |
138 | ;;; working file, the master file, or log program output | |
e1c0c2d1 KH |
139 | |
140 | (defun vc-match-substring (bn) | |
141 | (buffer-substring (match-beginning bn) (match-end bn))) | |
142 | ||
143 | (defun vc-lock-file (file) | |
144 | ;; Generate lock file name corresponding to FILE | |
145 | (let ((master (vc-name file))) | |
146 | (and | |
147 | master | |
148 | (string-match "\\(.*/\\)s\\.\\(.*\\)" master) | |
149 | (concat | |
150 | (substring master (match-beginning 1) (match-end 1)) | |
151 | "p." | |
152 | (substring master (match-beginning 2) (match-end 2)))))) | |
153 | ||
154 | (defun vc-parse-buffer (patterns &optional file properties) | |
155 | ;; Use PATTERNS to parse information out of the current buffer. | |
156 | ;; Each element of PATTERNS is a list of 2 to 3 elements. The first element | |
157 | ;; is the pattern to be matched, and the second (an integer) is the | |
158 | ;; number of the subexpression that should be returned. If there's | |
159 | ;; a third element (also the number of a subexpression), that | |
160 | ;; subexpression is assumed to be a date field and we want the most | |
161 | ;; recent entry matching the template. | |
162 | ;; If FILE and PROPERTIES are given, the latter must be a list of | |
163 | ;; properties of the same length as PATTERNS; each property is assigned | |
164 | ;; the corresponding value. | |
165 | (mapcar (function (lambda (p) | |
166 | (goto-char (point-min)) | |
167 | (cond | |
168 | ((eq (length p) 2) ;; search for first entry | |
169 | (let ((value nil)) | |
170 | (if (re-search-forward (car p) nil t) | |
171 | (setq value (vc-match-substring (elt p 1)))) | |
172 | (if file | |
173 | (progn (vc-file-setprop file (car properties) value) | |
174 | (setq properties (cdr properties)))) | |
175 | value)) | |
176 | ((eq (length p) 3) ;; search for latest entry | |
177 | (let ((latest-date "") (latest-val)) | |
178 | (while (re-search-forward (car p) nil t) | |
179 | (let ((date (vc-match-substring (elt p 2)))) | |
180 | (if (string< latest-date date) | |
181 | (progn | |
182 | (setq latest-date date) | |
183 | (setq latest-val | |
184 | (vc-match-substring (elt p 1))))))) | |
185 | (if file | |
186 | (progn (vc-file-setprop file (car properties) latest-val) | |
187 | (setq properties (cdr properties)))) | |
188 | latest-val))))) | |
189 | patterns) | |
190 | ) | |
191 | ||
02d383eb RS |
192 | (defun vc-insert-file (file &optional limit blocksize) |
193 | ;; Insert the contents of FILE into the current buffer. | |
194 | ;; Optional argument LIMIT is a regexp. If present, | |
195 | ;; the file is inserted in chunks of size BLOCKSIZE | |
a7acbbe4 | 196 | ;; (default 8 kByte), until the first occurrence of |
02d383eb RS |
197 | ;; LIMIT is found. The function returns nil if FILE |
198 | ;; doesn't exist. | |
07de4c3d | 199 | (erase-buffer) |
02d383eb RS |
200 | (cond ((file-exists-p file) |
201 | (cond (limit | |
202 | (if (not blocksize) (setq blocksize 8192)) | |
203 | (let (found s) | |
204 | (while (not found) | |
205 | (setq s (buffer-size)) | |
206 | (goto-char (1+ s)) | |
207 | (setq found | |
208 | (or (zerop (car (cdr | |
209 | (insert-file-contents file nil s | |
210 | (+ s blocksize))))) | |
211 | (progn (beginning-of-line) | |
212 | (re-search-forward limit nil t))))))) | |
213 | (t (insert-file-contents file))) | |
214 | (set-buffer-modified-p nil) | |
215 | (auto-save-mode nil) | |
216 | t) | |
217 | (t nil))) | |
218 | ||
219 | (defun vc-parse-locks (file locks) | |
220 | ;; Parse RCS or SCCS locks. | |
221 | ;; The result is a list of the form ((VERSION USER) (VERSION USER) ...), | |
222 | ;; which is returned and stored into the property `vc-master-locks'. | |
223 | (if (not locks) | |
224 | (vc-file-setprop file 'vc-master-locks 'none) | |
225 | (let ((found t) (index 0) master-locks version user) | |
226 | (cond ((eq (vc-backend file) 'SCCS) | |
227 | (while (string-match "^\\([0-9.]+\\) [0-9.]+ \\([^ ]+\\) .*\n?" | |
228 | locks index) | |
229 | (setq version (substring locks | |
230 | (match-beginning 1) (match-end 1))) | |
231 | (setq user (substring locks | |
232 | (match-beginning 2) (match-end 2))) | |
233 | (setq master-locks (append master-locks | |
234 | (list (cons version user)))) | |
235 | (setq index (match-end 0)))) | |
236 | ((eq (vc-backend file) 'RCS) | |
237 | (while (string-match "[ \t\n]*\\([^:]+\\):\\([0-9.]+\\)" | |
238 | locks index) | |
239 | (setq version (substring locks | |
240 | (match-beginning 2) (match-end 2))) | |
241 | (setq user (substring locks | |
242 | (match-beginning 1) (match-end 1))) | |
243 | (setq master-locks (append master-locks | |
244 | (list (cons version user)))) | |
e66eac08 AS |
245 | (setq index (match-end 0))) |
246 | (if (string-match ";[ \t\n]+strict;" locks index) | |
247 | (vc-file-setprop file 'vc-checkout-model 'manual) | |
248 | (vc-file-setprop file 'vc-checkout-model 'implicit)))) | |
02d383eb RS |
249 | (vc-file-setprop file 'vc-master-locks (or master-locks 'none))))) |
250 | ||
7064821c AS |
251 | (defun vc-simple-command (okstatus command file &rest args) |
252 | ;; Simple version of vc-do-command, for use in vc-hooks only. | |
253 | ;; Don't switch to the *vc-info* buffer before running the | |
254 | ;; command, because that would change its default directory | |
255 | (save-excursion (set-buffer (get-buffer-create "*vc-info*")) | |
256 | (erase-buffer)) | |
257 | (let ((exec-path (append vc-path exec-path)) exec-status | |
258 | ;; Add vc-path to PATH for the execution of this command. | |
259 | (process-environment | |
260 | (cons (concat "PATH=" (getenv "PATH") | |
261 | path-separator | |
262 | (mapconcat 'identity vc-path path-separator)) | |
263 | process-environment))) | |
264 | (setq exec-status | |
265 | (apply 'call-process command nil "*vc-info*" nil | |
266 | (append args (list file)))) | |
267 | (cond ((> exec-status okstatus) | |
268 | (switch-to-buffer (get-file-buffer file)) | |
269 | (shrink-window-if-larger-than-buffer | |
270 | (display-buffer "*vc-info*")) | |
271 | (error "Couldn't find version control information"))) | |
272 | exec-status)) | |
273 | ||
02d383eb RS |
274 | (defun vc-fetch-master-properties (file) |
275 | ;; Fetch those properties of FILE that are stored in the master file. | |
1efcbf46 RS |
276 | ;; For an RCS file, we don't get vc-latest-version vc-your-latest-version |
277 | ;; here because that is slow. | |
278 | ;; That gets done if/when the functions vc-latest-version | |
279 | ;; and vc-your-latest-version get called. | |
02d383eb RS |
280 | (save-excursion |
281 | (cond | |
282 | ((eq (vc-backend file) 'SCCS) | |
283 | (set-buffer (get-buffer-create "*vc-info*")) | |
284 | (if (vc-insert-file (vc-lock-file file)) | |
07de4c3d | 285 | (vc-parse-locks file (buffer-string)) |
02d383eb RS |
286 | (vc-file-setprop file 'vc-master-locks 'none)) |
287 | (vc-insert-file (vc-name file) "^\001e") | |
288 | (vc-parse-buffer | |
289 | (list '("^\001d D \\([^ ]+\\)" 1) | |
290 | (list (concat "^\001d D \\([^ ]+\\) .* " | |
291 | (regexp-quote (user-login-name)) " ") 1)) | |
292 | file | |
293 | '(vc-latest-version vc-your-latest-version))) | |
294 | ||
295 | ((eq (vc-backend file) 'RCS) | |
296 | (set-buffer (get-buffer-create "*vc-info*")) | |
e66eac08 | 297 | (vc-insert-file (vc-name file) "^[0-9]") |
02d383eb RS |
298 | (vc-parse-buffer |
299 | (list '("^head[ \t\n]+\\([^;]+\\);" 1) | |
300 | '("^branch[ \t\n]+\\([^;]+\\);" 1) | |
e66eac08 | 301 | '("^locks[ \t\n]*\\([^;]*;\\([ \t\n]*strict;\\)?\\)" 1)) |
02d383eb RS |
302 | file |
303 | '(vc-head-version | |
304 | vc-default-branch | |
1efcbf46 | 305 | vc-master-locks)) |
af5e65b9 AS |
306 | ;; determine vc-master-workfile-version: it is either the head |
307 | ;; of the trunk, the head of the default branch, or the | |
308 | ;; "default branch" itself, if that is a full revision number. | |
02d383eb RS |
309 | (let ((default-branch (vc-file-getprop file 'vc-default-branch))) |
310 | (cond | |
311 | ;; no default branch | |
312 | ((or (not default-branch) (string= "" default-branch)) | |
af5e65b9 | 313 | (vc-file-setprop file 'vc-master-workfile-version |
02d383eb RS |
314 | (vc-file-getprop file 'vc-head-version))) |
315 | ;; default branch is actually a revision | |
316 | ((string-match "^[0-9]+\\.[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*$" | |
317 | default-branch) | |
af5e65b9 AS |
318 | (vc-file-setprop file 'vc-master-workfile-version default-branch)) |
319 | ;; else, search for the head of the default branch | |
07de4c3d | 320 | (t (vc-insert-file (vc-name file) "^desc") |
1efcbf46 | 321 | (vc-parse-buffer (list (list |
02d383eb RS |
322 | (concat "^\\(" |
323 | (regexp-quote default-branch) | |
324 | "\\.[0-9]+\\)\ndate[ \t]+\\([0-9.]+\\);") 1 2)) | |
af5e65b9 | 325 | file '(vc-master-workfile-version))))) |
02d383eb RS |
326 | ;; translate the locks |
327 | (vc-parse-locks file (vc-file-getprop file 'vc-master-locks))) | |
328 | ||
329 | ((eq (vc-backend file) 'CVS) | |
7064821c | 330 | (save-excursion |
719dcee9 AS |
331 | ;; Call "cvs status" in the right directory, passing only the |
332 | ;; nondirectory part of the file name -- otherwise CVS might | |
333 | ;; silently give a wrong result. | |
334 | (let ((default-directory (file-name-directory file))) | |
335 | (vc-simple-command 0 "cvs" (file-name-nondirectory file) "status")) | |
7064821c AS |
336 | (set-buffer (get-buffer "*vc-info*")) |
337 | (vc-parse-buffer | |
338 | ;; CVS 1.3 says "RCS Version:", other releases "RCS Revision:", | |
339 | ;; and CVS 1.4a1 says "Repository revision:". | |
340 | '(("\\(RCS Version\\|RCS Revision\\|Repository revision\\):[\t ]+\\([0-9.]+\\)" 2) | |
341 | ("^File: [^ \t]+[ \t]+Status: \\(.*\\)" 1)) | |
342 | file | |
343 | '(vc-latest-version vc-cvs-status)) | |
344 | ;; Translate those status values that we understand into symbols. | |
345 | ;; Any other value is converted to nil. | |
346 | (let ((status (vc-file-getprop file 'vc-cvs-status))) | |
347 | (cond | |
348 | ((string-match "Up-to-date" status) | |
349 | (vc-file-setprop file 'vc-cvs-status 'up-to-date) | |
350 | (vc-file-setprop file 'vc-checkout-time | |
351 | (nth 5 (file-attributes file)))) | |
352 | ((vc-file-setprop file 'vc-cvs-status | |
e66eac08 AS |
353 | (cond |
354 | ((string-match "Locally Modified" status) 'locally-modified) | |
355 | ((string-match "Needs Merge" status) 'needs-merge) | |
d270fe6e AS |
356 | ((string-match "Needs \\(Checkout\\|Patch\\)" status) |
357 | 'needs-checkout) | |
e66eac08 AS |
358 | ((string-match "Unresolved Conflict" status) 'unresolved-conflict) |
359 | ((string-match "Locally Added" status) 'locally-added) | |
d270fe6e | 360 | (t 'unknown) |
7064821c | 361 | )))))))) |
3be2a362 RS |
362 | (if (get-buffer "*vc-info*") |
363 | (kill-buffer (get-buffer "*vc-info*"))))) | |
e1c0c2d1 KH |
364 | |
365 | ;;; Functions that determine property values, by examining the | |
366 | ;;; working file, the master file, or log program output | |
367 | ||
368 | (defun vc-consult-rcs-headers (file) | |
369 | ;; Search for RCS headers in FILE, and set properties | |
370 | ;; accordingly. This function can be disabled by setting | |
371 | ;; vc-consult-headers to nil. | |
372 | ;; Returns: nil if no headers were found | |
373 | ;; (or if the feature is disabled, | |
374 | ;; or if there is currently no buffer | |
375 | ;; visiting FILE) | |
376 | ;; 'rev if a workfile revision was found | |
377 | ;; 'rev-and-lock if revision and lock info was found | |
e66eac08 | 378 | (cond |
e1c0c2d1 | 379 | ((or (not vc-consult-headers) |
02d383eb | 380 | (not (get-file-buffer file))) nil) |
e66eac08 AS |
381 | ((let (status version locking-user) |
382 | (save-excursion | |
e1c0c2d1 KH |
383 | (set-buffer (get-file-buffer file)) |
384 | (goto-char (point-min)) | |
385 | (cond | |
386 | ;; search for $Id or $Header | |
387 | ;; ------------------------- | |
1efcbf46 RS |
388 | ((or (and (search-forward "$Id: " nil t) |
389 | (looking-at "[^ ]+ \\([0-9.]+\\) ")) | |
390 | (and (progn (goto-char (point-min)) | |
fceee007 | 391 | (search-forward "$Header: " nil t)) |
1efcbf46 | 392 | (looking-at "[^ ]+ \\([0-9.]+\\) "))) |
04094290 | 393 | (goto-char (match-end 0)) |
e1c0c2d1 | 394 | ;; if found, store the revision number ... |
e66eac08 AS |
395 | (setq version (buffer-substring (match-beginning 1) (match-end 1))) |
396 | ;; ... and check for the locking state | |
397 | (cond | |
398 | ((looking-at | |
399 | (concat "[0-9]+[/-][01][0-9][/-][0-3][0-9] " ; date | |
400 | "[0-2][0-9]:[0-5][0-9]+:[0-6][0-9]+\\([+-][0-9:]+\\)? " ; time | |
401 | "[^ ]+ [^ ]+ ")) ; author & state | |
402 | (goto-char (match-end 0)) ; [0-6] in regexp handles leap seconds | |
ce27f264 | 403 | (cond |
e66eac08 AS |
404 | ;; unlocked revision |
405 | ((looking-at "\\$") | |
406 | (setq locking-user 'none) | |
407 | (setq status 'rev-and-lock)) | |
408 | ;; revision is locked by some user | |
409 | ((looking-at "\\([^ ]+\\) \\$") | |
410 | (setq locking-user | |
411 | (buffer-substring (match-beginning 1) (match-end 1))) | |
412 | (setq status 'rev-and-lock)) | |
413 | ;; everything else: false | |
414 | (nil))) | |
415 | ;; unexpected information in | |
416 | ;; keyword string --> quit | |
417 | (nil))) | |
e1c0c2d1 KH |
418 | ;; search for $Revision |
419 | ;; -------------------- | |
420 | ((re-search-forward (concat "\\$" | |
421 | "Revision: \\([0-9.]+\\) \\$") | |
422 | nil t) | |
423 | ;; if found, store the revision number ... | |
e66eac08 AS |
424 | (setq version (buffer-substring (match-beginning 1) (match-end 1))) |
425 | ;; and see if there's any lock information | |
426 | (goto-char (point-min)) | |
427 | (if (re-search-forward (concat "\\$" "Locker:") nil t) | |
428 | (cond ((looking-at " \\([^ ]+\\) \\$") | |
429 | (setq locking-user (buffer-substring (match-beginning 1) | |
e1c0c2d1 | 430 | (match-end 1))) |
e66eac08 AS |
431 | (setq status 'rev-and-lock)) |
432 | ((looking-at " *\\$") | |
433 | (setq locking-user 'none) | |
434 | (setq status 'rev-and-lock)) | |
435 | (t | |
436 | (setq locking-user 'none) | |
437 | (setq status 'rev-and-lock))) | |
438 | (setq status 'rev))) | |
e1c0c2d1 KH |
439 | ;; else: nothing found |
440 | ;; ------------------- | |
e66eac08 AS |
441 | (t nil))) |
442 | (if status (vc-file-setprop file 'vc-workfile-version version)) | |
443 | (and (eq status 'rev-and-lock) | |
444 | (eq (vc-backend file) 'RCS) | |
445 | (vc-file-setprop file 'vc-locking-user locking-user) | |
446 | ;; If the file has headers, we don't want to query the master file, | |
447 | ;; because that would eliminate all the performance gain the headers | |
448 | ;; brought us. We therefore use a heuristic for the checkout model | |
449 | ;; now: If we trust the file permissions, and the file is not | |
450 | ;; locked, then if the file is read-only the checkout model is | |
451 | ;; `manual', otherwise `implicit'. | |
452 | (not (vc-mistrust-permissions file)) | |
453 | (not (vc-locking-user file)) | |
454 | (if (string-match ".r-..-..-." (nth 8 (file-attributes file))) | |
455 | (vc-file-setprop file 'vc-checkout-model 'manual) | |
7064821c AS |
456 | (vc-file-setprop file 'vc-checkout-model 'implicit))) |
457 | status)))) | |
e1c0c2d1 | 458 | |
02d383eb RS |
459 | ;;; Access functions to file properties |
460 | ;;; (Properties should be _set_ using vc-file-setprop, but | |
461 | ;;; _retrieved_ only through these functions, which decide | |
462 | ;;; if the property is already known or not. A property should | |
463 | ;;; only be retrieved by vc-file-getprop if there is no | |
464 | ;;; access function.) | |
465 | ||
466 | ;;; properties indicating the backend | |
467 | ;;; being used for FILE | |
e1c0c2d1 KH |
468 | |
469 | (defun vc-backend-subdirectory-name (&optional file) | |
470 | ;; Where the master and lock files for the current directory are kept | |
471 | (symbol-name | |
472 | (or | |
473 | (and file (vc-backend file)) | |
474 | vc-default-back-end | |
475 | (setq vc-default-back-end (if (vc-find-binary "rcs") 'RCS 'SCCS))))) | |
476 | ||
02d383eb | 477 | (defun vc-name (file) |
b23a2306 AS |
478 | "Return the master name of a file, nil if it is not registered. |
479 | For CVS, the full name of CVS/Entries is returned." | |
02d383eb RS |
480 | (or (vc-file-getprop file 'vc-name) |
481 | (let ((name-and-type (vc-registered file))) | |
482 | (if name-and-type | |
483 | (progn | |
484 | (vc-file-setprop file 'vc-backend (cdr name-and-type)) | |
485 | (vc-file-setprop file 'vc-name (car name-and-type))))))) | |
e1c0c2d1 | 486 | |
02d383eb RS |
487 | (defun vc-backend (file) |
488 | "Return the version-control type of a file, nil if it is not registered." | |
489 | (and file | |
490 | (or (vc-file-getprop file 'vc-backend) | |
491 | (let ((name-and-type (vc-registered file))) | |
492 | (if name-and-type | |
493 | (progn | |
494 | (vc-file-setprop file 'vc-name (car name-and-type)) | |
495 | (vc-file-setprop file 'vc-backend (cdr name-and-type)))))))) | |
e1c0c2d1 | 496 | |
04446ed0 AS |
497 | (defun vc-checkout-model (file) |
498 | ;; Return `manual' if the user has to type C-x C-q to check out FILE. | |
e66eac08 AS |
499 | ;; Return `implicit' if the file can be modified without locking it first. |
500 | (or | |
501 | (vc-file-getprop file 'vc-checkout-model) | |
502 | (cond | |
503 | ((eq (vc-backend file) 'SCCS) | |
504 | (vc-file-setprop file 'vc-checkout-model 'manual)) | |
505 | ((eq (vc-backend file) 'RCS) | |
506 | (vc-consult-rcs-headers file) | |
507 | (or (vc-file-getprop file 'vc-checkout-model) | |
508 | (progn (vc-fetch-master-properties file) | |
509 | (vc-file-getprop file 'vc-checkout-model)))) | |
510 | ((eq (vc-backend file) 'CVS) | |
511 | (vc-file-setprop file 'vc-checkout-model | |
512 | (if (getenv "CVSREAD") 'manual 'implicit)))))) | |
04446ed0 | 513 | |
02d383eb | 514 | ;;; properties indicating the locking state |
e1c0c2d1 KH |
515 | |
516 | (defun vc-cvs-status (file) | |
517 | ;; Return the cvs status of FILE | |
518 | ;; (Status field in output of "cvs status") | |
519 | (cond ((vc-file-getprop file 'vc-cvs-status)) | |
02d383eb | 520 | (t (vc-fetch-master-properties file) |
e1c0c2d1 KH |
521 | (vc-file-getprop file 'vc-cvs-status)))) |
522 | ||
02d383eb RS |
523 | (defun vc-master-locks (file) |
524 | ;; Return the lock entries in the master of FILE. | |
525 | ;; Return 'none if there are no such entries, and a list | |
526 | ;; of the form ((VERSION USER) (VERSION USER) ...) otherwise. | |
527 | (cond ((vc-file-getprop file 'vc-master-locks)) | |
528 | (t (vc-fetch-master-properties file) | |
529 | (vc-file-getprop file 'vc-master-locks)))) | |
530 | ||
531 | (defun vc-master-locking-user (file) | |
532 | ;; Return the master file's idea of who is locking | |
533 | ;; the current workfile version of FILE. | |
534 | ;; Return 'none if it is not locked. | |
535 | (let ((master-locks (vc-master-locks file)) lock) | |
536 | (if (eq master-locks 'none) 'none | |
537 | ;; search for a lock on the current workfile version | |
538 | (setq lock (assoc (vc-workfile-version file) master-locks)) | |
539 | (cond (lock (cdr lock)) | |
540 | ('none))))) | |
541 | ||
7064821c AS |
542 | (defun vc-lock-from-permissions (file) |
543 | ;; If the permissions can be trusted for this file, determine the | |
544 | ;; locking state from them. Returns (user-login-name), `none', or nil. | |
545 | ;; This implementation assumes that any file which is under version | |
546 | ;; control and has -rw-r--r-- is locked by its owner. This is true | |
547 | ;; for both RCS and SCCS, which keep unlocked files at -r--r--r--. | |
548 | ;; We have to be careful not to exclude files with execute bits on; | |
549 | ;; scripts can be under version control too. Also, we must ignore the | |
550 | ;; group-read and other-read bits, since paranoid users turn them off. | |
551 | ;; This hack wins because calls to the somewhat expensive | |
552 | ;; `vc-fetch-master-properties' function only have to be made if | |
553 | ;; (a) the file is locked by someone other than the current user, | |
554 | ;; or (b) some untoward manipulation behind vc's back has changed | |
555 | ;; the owner or the `group' or `other' write bits. | |
556 | (let ((attributes (file-attributes file))) | |
557 | (if (not (vc-mistrust-permissions file)) | |
558 | (cond ((string-match ".r-..-..-." (nth 8 attributes)) | |
559 | (vc-file-setprop file 'vc-locking-user 'none)) | |
560 | ((and (= (nth 2 attributes) (user-uid)) | |
561 | (string-match ".rw..-..-." (nth 8 attributes))) | |
562 | (vc-file-setprop file 'vc-locking-user (user-login-name))) | |
563 | (nil))))) | |
564 | ||
565 | (defun vc-file-owner (file) | |
566 | ;; The expression below should return the username of the owner | |
567 | ;; of the file. It doesn't. It returns the username if it is | |
568 | ;; you, or otherwise the UID of the owner of the file. The | |
569 | ;; return value from this function is only used by | |
570 | ;; vc-dired-reformat-line, and it does the proper thing if a UID | |
571 | ;; is returned. | |
572 | ;; The *proper* way to fix this would be to implement a built-in | |
573 | ;; function in Emacs, say, (username UID), that returns the | |
574 | ;; username of a given UID. | |
575 | ;; The result of this hack is that vc-directory will print the | |
576 | ;; name of the owner of the file for any files that are | |
577 | ;; modified. | |
578 | (let ((uid (nth 2 (file-attributes file)))) | |
579 | (if (= uid (user-uid)) (user-login-name) uid))) | |
580 | ||
581 | (defun vc-rcs-lock-from-diff (file) | |
582 | ;; Diff the file against the master version. If differences are found, | |
31888047 AS |
583 | ;; mark the file locked. This is only used for RCS with non-strict |
584 | ;; locking. (If "rcsdiff" doesn't understand --brief, we do a double-take | |
585 | ;; and remember the fact for the future.) | |
586 | (let* ((version (concat "-r" (vc-workfile-version file))) | |
587 | (status (if (eq vc-rcsdiff-knows-brief 'no) | |
588 | (vc-simple-command 1 "rcsdiff" file version) | |
589 | (vc-simple-command 2 "rcsdiff" file "--brief" version)))) | |
590 | (if (eq status 2) | |
591 | (if (not vc-rcsdiff-knows-brief) | |
592 | (setq vc-rcsdiff-knows-brief 'no | |
593 | status (vc-simple-command 1 "rcsdiff" file version)) | |
594 | (error "rcsdiff failed.")) | |
595 | (if (not vc-rcsdiff-knows-brief) (setq vc-rcsdiff-knows-brief 'yes))) | |
596 | (if (zerop status) | |
597 | (vc-file-setprop file 'vc-locking-user 'none) | |
598 | (vc-file-setprop file 'vc-locking-user (vc-file-owner file))))) | |
7064821c | 599 | |
e1c0c2d1 | 600 | (defun vc-locking-user (file) |
02d383eb | 601 | ;; Return the name of the person currently holding a lock on FILE. |
7064821c AS |
602 | ;; Return nil if there is no such person. (Sometimes, not the name |
603 | ;; of the locking user but his uid will be returned.) | |
02d383eb | 604 | ;; Under CVS, a file is considered locked if it has been modified since |
7064821c | 605 | ;; it was checked out. |
02d383eb RS |
606 | ;; The property is cached. It is only looked up if it is currently nil. |
607 | ;; Note that, for a file that is not locked, the actual property value | |
7064821c | 608 | ;; is `none', to distinguish it from an unknown locking state. That value |
02d383eb RS |
609 | ;; is converted to nil by this function, and returned to the caller. |
610 | (let ((locking-user (vc-file-getprop file 'vc-locking-user))) | |
611 | (if locking-user | |
612 | ;; if we already know the property, return it | |
613 | (if (eq locking-user 'none) nil locking-user) | |
614 | ||
615 | ;; otherwise, infer the property... | |
616 | (cond | |
02d383eb | 617 | ((eq (vc-backend file) 'CVS) |
7064821c AS |
618 | (or (and (eq (vc-checkout-model file) 'manual) |
619 | (vc-lock-from-permissions file)) | |
b23a2306 AS |
620 | (and (equal (vc-file-getprop file 'vc-checkout-time) |
621 | (nth 5 (file-attributes file))) | |
622 | (vc-file-setprop file 'vc-locking-user 'none)) | |
10aa933d RS |
623 | (let ((locker (vc-file-owner file))) |
624 | (vc-file-setprop file 'vc-locking-user | |
625 | (if (stringp locker) locker | |
626 | (format "%d" locker)))))) | |
7064821c AS |
627 | |
628 | ((eq (vc-backend file) 'RCS) | |
629 | (let (p-lock) | |
630 | ||
631 | ;; Check for RCS headers first | |
632 | (or (eq (vc-consult-rcs-headers file) 'rev-and-lock) | |
633 | ||
634 | ;; If there are no headers, try to learn it | |
635 | ;; from the permissions. | |
636 | (and (setq p-lock (vc-lock-from-permissions file)) | |
637 | (if (eq p-lock 'none) | |
638 | ||
639 | ;; If the permissions say "not locked", we know | |
640 | ;; that the checkout model must be `manual'. | |
641 | (vc-file-setprop file 'vc-checkout-model 'manual) | |
642 | ||
643 | ;; If the permissions say "locked", we can only trust | |
644 | ;; this *if* the checkout model is `manual'. | |
645 | (eq (vc-checkout-model file) 'manual))) | |
646 | ||
647 | ;; Otherwise, use lock information from the master file. | |
648 | (vc-file-setprop file 'vc-locking-user | |
649 | (vc-master-locking-user file))) | |
650 | ||
651 | ;; Finally, if the file is not explicitly locked | |
652 | ;; it might still be locked implicitly. | |
653 | (and (eq (vc-file-getprop file 'vc-locking-user) 'none) | |
654 | (eq (vc-checkout-model file) 'implicit) | |
655 | (vc-rcs-lock-from-diff file)))) | |
656 | ||
657 | ((eq (vc-backend file) 'SCCS) | |
658 | (or (vc-lock-from-permissions file) | |
659 | (vc-file-setprop file 'vc-locking-user | |
aadce164 | 660 | (vc-master-locking-user file))))) |
7064821c AS |
661 | |
662 | ;; convert a possible 'none value | |
663 | (setq locking-user (vc-file-getprop file 'vc-locking-user)) | |
aadce164 | 664 | (if (eq locking-user 'none) nil locking-user)))) |
02d383eb RS |
665 | |
666 | ;;; properties to store current and recent version numbers | |
e1c0c2d1 KH |
667 | |
668 | (defun vc-latest-version (file) | |
669 | ;; Return version level of the latest version of FILE | |
02d383eb | 670 | (cond ((vc-file-getprop file 'vc-latest-version)) |
1efcbf46 | 671 | (t (vc-fetch-properties file) |
02d383eb | 672 | (vc-file-getprop file 'vc-latest-version)))) |
e1c0c2d1 KH |
673 | |
674 | (defun vc-your-latest-version (file) | |
675 | ;; Return version level of the latest version of FILE checked in by you | |
02d383eb | 676 | (cond ((vc-file-getprop file 'vc-your-latest-version)) |
1efcbf46 | 677 | (t (vc-fetch-properties file) |
02d383eb | 678 | (vc-file-getprop file 'vc-your-latest-version)))) |
e1c0c2d1 | 679 | |
af5e65b9 AS |
680 | (defun vc-master-workfile-version (file) |
681 | ;; Return the master file's idea of what is the current workfile version. | |
e1c0c2d1 | 682 | ;; This property is defined for RCS only. |
af5e65b9 | 683 | (cond ((vc-file-getprop file 'vc-master-workfile-version)) |
02d383eb | 684 | (t (vc-fetch-master-properties file) |
af5e65b9 | 685 | (vc-file-getprop file 'vc-master-workfile-version)))) |
e1c0c2d1 | 686 | |
1efcbf46 RS |
687 | (defun vc-fetch-properties (file) |
688 | ;; Fetch vc-latest-version and vc-your-latest-version | |
689 | ;; if that wasn't already done. | |
04094290 RS |
690 | (cond |
691 | ((eq (vc-backend file) 'RCS) | |
ee526b55 RS |
692 | (save-excursion |
693 | (set-buffer (get-buffer-create "*vc-info*")) | |
694 | (vc-insert-file (vc-name file) "^desc") | |
695 | (vc-parse-buffer | |
696 | (list '("^\\([0-9]+\\.[0-9.]+\\)\ndate[ \t]+\\([0-9.]+\\);" 1 2) | |
697 | (list (concat "^\\([0-9]+\\.[0-9.]+\\)\n" | |
698 | "date[ \t]+\\([0-9.]+\\);[ \t]+" | |
699 | "author[ \t]+" | |
700 | (regexp-quote (user-login-name)) ";") 1 2)) | |
701 | file | |
07de4c3d RS |
702 | '(vc-latest-version vc-your-latest-version)) |
703 | (if (get-buffer "*vc-info*") | |
704 | (kill-buffer (get-buffer "*vc-info*"))))) | |
04094290 | 705 | (t (vc-fetch-master-properties file)) |
1efcbf46 RS |
706 | )) |
707 | ||
e1c0c2d1 KH |
708 | (defun vc-workfile-version (file) |
709 | ;; Return version level of the current workfile FILE | |
710 | ;; This is attempted by first looking at the RCS keywords. | |
711 | ;; If there are no keywords in the working file, | |
af5e65b9 | 712 | ;; vc-master-workfile-version is taken. |
e1c0c2d1 KH |
713 | ;; Note that this property is cached, that is, it is only |
714 | ;; looked up if it is nil. | |
715 | ;; For SCCS, this property is equivalent to vc-latest-version. | |
716 | (cond ((vc-file-getprop file 'vc-workfile-version)) | |
717 | ((eq (vc-backend file) 'SCCS) (vc-latest-version file)) | |
718 | ((eq (vc-backend file) 'RCS) | |
719 | (if (vc-consult-rcs-headers file) | |
720 | (vc-file-getprop file 'vc-workfile-version) | |
af5e65b9 | 721 | (let ((rev (cond ((vc-master-workfile-version file)) |
e1c0c2d1 KH |
722 | ((vc-latest-version file))))) |
723 | (vc-file-setprop file 'vc-workfile-version rev) | |
724 | rev))) | |
725 | ((eq (vc-backend file) 'CVS) | |
726 | (if (vc-consult-rcs-headers file) ;; CVS | |
727 | (vc-file-getprop file 'vc-workfile-version) | |
7b0e1b8f KH |
728 | (catch 'found |
729 | (vc-find-cvs-master (file-name-directory file) | |
730 | (file-name-nondirectory file))) | |
e1c0c2d1 | 731 | (vc-file-getprop file 'vc-workfile-version))))) |
f2ee4191 | 732 | |
594722a8 ER |
733 | ;;; actual version-control code starts here |
734 | ||
735 | (defun vc-registered (file) | |
18c8a18e PE |
736 | (let (handler handlers) |
737 | (if (boundp 'file-name-handler-alist) | |
b993101e | 738 | (setq handler (find-file-name-handler file 'vc-registered))) |
18c8a18e PE |
739 | (if handler |
740 | (funcall handler 'vc-registered file) | |
741 | ;; Search for a master corresponding to the given file | |
742 | (let ((dirname (or (file-name-directory file) "")) | |
743 | (basename (file-name-nondirectory file))) | |
744 | (catch 'found | |
745 | (mapcar | |
746 | (function (lambda (s) | |
174edc13 RS |
747 | (if (atom s) |
748 | (funcall s dirname basename) | |
749 | (let ((trial (format (car s) dirname basename))) | |
750 | (if (and (file-exists-p trial) | |
751 | ;; Make sure the file we found with name | |
752 | ;; TRIAL is not the source file itself. | |
753 | ;; That can happen with RCS-style names | |
754 | ;; if the file name is truncated | |
755 | ;; (e.g. to 14 chars). See if either | |
756 | ;; directory or attributes differ. | |
757 | (or (not (string= dirname | |
758 | (file-name-directory trial))) | |
759 | (not (equal | |
760 | (file-attributes file) | |
761 | (file-attributes trial))))) | |
762 | (throw 'found (cons trial (cdr s)))))))) | |
18c8a18e PE |
763 | vc-master-templates) |
764 | nil))))) | |
594722a8 | 765 | |
b23a2306 AS |
766 | (defun vc-utc-string (timeval) |
767 | ;; Convert a time value into universal time, and return it as a | |
31888047 | 768 | ;; human-readable string. This is for comparing CVS checkout times |
b23a2306 AS |
769 | ;; with file modification times. |
770 | (let (utc (high (car timeval)) (low (nth 1 timeval)) | |
31888047 | 771 | (offset (car (current-time-zone timeval)))) |
b23a2306 AS |
772 | (setq low (- low offset)) |
773 | (setq utc (if (> low 65535) | |
774 | (list (1+ high) (- low 65536)) | |
775 | (if (< low 0) | |
776 | (list (1- high) (+ 65536 low)) | |
777 | (list high low)))) | |
778 | (current-time-string utc))) | |
779 | ||
174edc13 RS |
780 | (defun vc-find-cvs-master (dirname basename) |
781 | ;; Check if DIRNAME/BASENAME is handled by CVS. | |
782 | ;; If it is, do a (throw 'found (cons MASTER 'CVS)). | |
b23a2306 AS |
783 | ;; Note: This function throws the name of CVS/Entries |
784 | ;; NOT that of the RCS master file (because we wouldn't be able | |
785 | ;; to access it under remote CVS). | |
786 | ;; The function returns nil if DIRNAME/BASENAME is not handled by CVS. | |
0b086efb RS |
787 | (if (and vc-handle-cvs |
788 | (file-directory-p (concat dirname "CVS/")) | |
b23a2306 AS |
789 | (file-readable-p (concat dirname "CVS/Entries"))) |
790 | (let (buffer time (fold case-fold-search) | |
791 | (file (concat dirname basename))) | |
174edc13 RS |
792 | (unwind-protect |
793 | (save-excursion | |
7064821c AS |
794 | (setq buffer (set-buffer (get-buffer-create "*vc-info*"))) |
795 | (vc-insert-file (concat dirname "CVS/Entries")) | |
174edc13 | 796 | (goto-char (point-min)) |
f2ee4191 RS |
797 | ;; make sure the file name is searched |
798 | ;; case-sensitively | |
799 | (setq case-fold-search nil) | |
174edc13 RS |
800 | (cond |
801 | ((re-search-forward | |
b23a2306 AS |
802 | (concat "^/" (regexp-quote basename) |
803 | "/\\([^/]*\\)/\\([^/]*\\)/") | |
174edc13 | 804 | nil t) |
f2ee4191 | 805 | (setq case-fold-search fold) ;; restore the old value |
b23a2306 AS |
806 | ;; We found it. Store away version number now that we |
807 | ;; are anyhow so close to finding it. | |
808 | (vc-file-setprop file | |
f2ee4191 | 809 | 'vc-workfile-version |
b23a2306 AS |
810 | (match-string 1)) |
811 | ;; If the file hasn't been modified since checkout, | |
812 | ;; store the checkout-time. | |
719dcee9 AS |
813 | (let ((mtime (nth 5 (file-attributes file)))) |
814 | (if (string= (match-string 2) (vc-utc-string mtime)) | |
815 | (vc-file-setprop file 'vc-checkout-time mtime) | |
816 | (vc-file-setprop file 'vc-checkout-time 0))) | |
b23a2306 | 817 | (throw 'found (cons (concat dirname "CVS/Entries") 'CVS))) |
f2ee4191 RS |
818 | (t (setq case-fold-search fold) ;; restore the old value |
819 | nil))) | |
7064821c | 820 | (kill-buffer buffer))))) |
174edc13 | 821 | |
f2ee4191 RS |
822 | (defun vc-buffer-backend () |
823 | "Return the version-control type of the visited file, or nil if none." | |
824 | (if (eq vc-buffer-backend t) | |
e1c0c2d1 | 825 | (setq vc-buffer-backend (vc-backend (buffer-file-name))) |
f2ee4191 RS |
826 | vc-buffer-backend)) |
827 | ||
c844616c | 828 | (defun vc-toggle-read-only (&optional verbose) |
c43e436c RS |
829 | "Change read-only status of current buffer, perhaps via version control. |
830 | If the buffer is visiting a file registered with version control, | |
831 | then check the file in or out. Otherwise, just change the read-only flag | |
f2ee4191 | 832 | of the buffer. With prefix argument, ask for version number." |
c844616c | 833 | (interactive "P") |
e1c0c2d1 | 834 | (if (vc-backend (buffer-file-name)) |
c844616c | 835 | (vc-next-action verbose) |
594722a8 | 836 | (toggle-read-only))) |
c43e436c | 837 | (define-key global-map "\C-x\C-q" 'vc-toggle-read-only) |
594722a8 | 838 | |
e66eac08 AS |
839 | (defun vc-after-save () |
840 | ;; Function to be called by basic-save-buffer (in files.el). | |
841 | ;; If the file in the current buffer is under version control, | |
842 | ;; not locked, and the checkout model for it is `implicit', | |
843 | ;; mark it "locked" and redisplay the mode line. | |
844 | (let ((file (buffer-file-name))) | |
845 | (and (vc-file-getprop file 'vc-backend) | |
846 | ;; ...check the property directly, not through the function of the | |
847 | ;; same name. Otherwise Emacs would check for a master file | |
848 | ;; each time a non-version-controlled buffer is saved. | |
849 | ;; The property is computed when the file is visited, so if it | |
850 | ;; is `nil' now, it is certain that the file is NOT | |
851 | ;; version-controlled. | |
b23a2306 AS |
852 | (or (and (equal (vc-file-getprop file 'vc-checkout-time) |
853 | (nth 5 (file-attributes file))) | |
854 | ;; File has been saved in the same second in which | |
855 | ;; it was checked out. Clear the checkout-time | |
856 | ;; to avoid confusion. | |
857 | (vc-file-setprop file 'vc-checkout-time nil)) | |
858 | t) | |
e66eac08 AS |
859 | (not (vc-locking-user file)) |
860 | (eq (vc-checkout-model file) 'implicit) | |
861 | (vc-file-setprop file 'vc-locking-user (user-login-name)) | |
b23a2306 AS |
862 | (or (and (eq (vc-backend file) 'CVS) |
863 | (vc-file-setprop file 'vc-cvs-status nil)) | |
864 | t) | |
865 | (vc-mode-line file)))) | |
04446ed0 | 866 | |
594722a8 | 867 | (defun vc-mode-line (file &optional label) |
7bc2b98b | 868 | "Set `vc-mode' to display type of version control for FILE. |
594722a8 | 869 | The value is set in the current buffer, which should be the buffer |
624c0e9d RS |
870 | visiting FILE. Second optional arg LABEL is put in place of version |
871 | control system name." | |
18c8a18e | 872 | (interactive (list buffer-file-name nil)) |
7b0e1b8f | 873 | (let ((vc-type (vc-backend file))) |
f2ee4191 | 874 | (setq vc-mode |
7b0e1b8f KH |
875 | (and vc-type |
876 | (concat " " (or label (symbol-name vc-type)) | |
877 | (and vc-display-status (vc-status file))))) | |
878 | (and vc-type | |
879 | (equal file (buffer-file-name)) | |
e66eac08 AS |
880 | (vc-locking-user file) |
881 | ;; If the file is locked by some other user, make | |
882 | ;; the buffer read-only. Like this, even root | |
883 | ;; cannot modify a file without locking it first. | |
884 | (not (string= (user-login-name) (vc-locking-user file))) | |
885 | (setq buffer-read-only t)) | |
f2ee4191 RS |
886 | (force-mode-line-update) |
887 | ;;(set-buffer-modified-p (buffer-modified-p)) ;;use this if Emacs 18 | |
888 | vc-type)) | |
594722a8 | 889 | |
e1c0c2d1 | 890 | (defun vc-status (file) |
45c92c0c | 891 | ;; Return string for placement in modeline by `vc-mode-line'. |
e1c0c2d1 | 892 | ;; Format: |
624c0e9d | 893 | ;; |
e1c0c2d1 KH |
894 | ;; "-REV" if the revision is not locked |
895 | ;; ":REV" if the revision is locked by the user | |
896 | ;; ":LOCKER:REV" if the revision is locked by somebody else | |
897 | ;; " @@" for a CVS file that is added, but not yet committed | |
174edc13 | 898 | ;; |
e1c0c2d1 KH |
899 | ;; In the CVS case, a "locked" working file is a |
900 | ;; working file that is modified with respect to the master. | |
e66eac08 AS |
901 | ;; The file is "locked" from the moment when the user saves |
902 | ;; the modified buffer. | |
e1c0c2d1 KH |
903 | ;; |
904 | ;; This function assumes that the file is registered. | |
905 | ||
906 | (let ((locker (vc-locking-user file)) | |
907 | (rev (vc-workfile-version file))) | |
908 | (cond ((string= "0" rev) | |
909 | " @@") | |
38179d42 RM |
910 | ((not locker) |
911 | (concat "-" rev)) | |
912 | ((if (stringp locker) | |
913 | (string= locker (user-login-name)) | |
914 | (= locker (user-uid))) | |
e1c0c2d1 KH |
915 | (concat ":" rev)) |
916 | (t | |
917 | (concat ":" locker ":" rev))))) | |
f2ee4191 | 918 | |
594722a8 ER |
919 | ;;; install a call to the above as a find-file hook |
920 | (defun vc-find-file-hook () | |
18c8a18e PE |
921 | ;; Recompute whether file is version controlled, |
922 | ;; if user has killed the buffer and revisited. | |
f2ee4191 RS |
923 | (cond |
924 | (buffer-file-name | |
925 | (vc-file-clearprops buffer-file-name) | |
926 | (cond | |
e1c0c2d1 | 927 | ((vc-backend buffer-file-name) |
f2ee4191 RS |
928 | (vc-mode-line buffer-file-name) |
929 | (cond ((not vc-make-backup-files) | |
930 | ;; Use this variable, not make-backup-files, | |
931 | ;; because this is for things that depend on the file name. | |
932 | (make-local-variable 'backup-inhibited) | |
45fc7cc3 RS |
933 | (setq backup-inhibited t)))) |
934 | ((let* ((link (file-symlink-p buffer-file-name)) | |
935 | (link-type (and link (vc-backend link)))) | |
936 | (if link-type | |
b8063212 AS |
937 | (cond ((eq vc-follow-symlinks nil) |
938 | (message | |
939 | "Warning: symbolic link to %s-controlled source file" link-type)) | |
940 | ((eq vc-follow-symlinks 'ask) | |
941 | (if (yes-or-no-p (format | |
942 | "Symbolic link to %s-controlled source file; follow link? " link-type)) | |
943 | (progn (setq buffer-file-name | |
944 | (file-truename buffer-file-name)) | |
945 | (message "Followed link to %s" buffer-file-name) | |
946 | (vc-find-file-hook)) | |
947 | (message | |
948 | "Warning: editing through the link bypasses version control") | |
949 | )) | |
950 | (t (setq buffer-file-name (file-truename buffer-file-name)) | |
951 | (message "Followed link to %s" buffer-file-name) | |
952 | (vc-find-file-hook)))))))))) | |
594722a8 | 953 | |
6379911c | 954 | (add-hook 'find-file-hooks 'vc-find-file-hook) |
594722a8 ER |
955 | |
956 | ;;; more hooks, this time for file-not-found | |
957 | (defun vc-file-not-found-hook () | |
958 | "When file is not found, try to check it out from RCS or SCCS. | |
959 | Returns t if checkout was successful, nil otherwise." | |
e1c0c2d1 | 960 | (if (vc-backend buffer-file-name) |
624c0e9d | 961 | (save-excursion |
594722a8 | 962 | (require 'vc) |
02d383eb | 963 | (setq default-directory (file-name-directory (buffer-file-name))) |
594722a8 ER |
964 | (not (vc-error-occurred (vc-checkout buffer-file-name)))))) |
965 | ||
6379911c | 966 | (add-hook 'find-file-not-found-hooks 'vc-file-not-found-hook) |
594722a8 | 967 | |
f2ee4191 RS |
968 | ;; Discard info about a file when we kill its buffer. |
969 | (defun vc-kill-buffer-hook () | |
970 | (if (stringp (buffer-file-name)) | |
971 | (progn | |
972 | (vc-file-clearprops (buffer-file-name)) | |
973 | (kill-local-variable 'vc-buffer-backend)))) | |
974 | ||
975 | ;;;(add-hook 'kill-buffer-hook 'vc-kill-buffer-hook) | |
976 | ||
594722a8 | 977 | ;;; Now arrange for bindings and autoloading of the main package. |
7bc2b98b ER |
978 | ;;; Bindings for this have to go in the global map, as we'll often |
979 | ;;; want to call them from random buffers. | |
594722a8 ER |
980 | |
981 | (setq vc-prefix-map (lookup-key global-map "\C-xv")) | |
982 | (if (not (keymapp vc-prefix-map)) | |
983 | (progn | |
984 | (setq vc-prefix-map (make-sparse-keymap)) | |
985 | (define-key global-map "\C-xv" vc-prefix-map) | |
986 | (define-key vc-prefix-map "a" 'vc-update-change-log) | |
987 | (define-key vc-prefix-map "c" 'vc-cancel-version) | |
18c8a18e | 988 | (define-key vc-prefix-map "d" 'vc-directory) |
594722a8 ER |
989 | (define-key vc-prefix-map "h" 'vc-insert-headers) |
990 | (define-key vc-prefix-map "i" 'vc-register) | |
991 | (define-key vc-prefix-map "l" 'vc-print-log) | |
992 | (define-key vc-prefix-map "r" 'vc-retrieve-snapshot) | |
993 | (define-key vc-prefix-map "s" 'vc-create-snapshot) | |
994 | (define-key vc-prefix-map "u" 'vc-revert-buffer) | |
995 | (define-key vc-prefix-map "v" 'vc-next-action) | |
18c8a18e | 996 | (define-key vc-prefix-map "=" 'vc-diff) |
624c0e9d RS |
997 | (define-key vc-prefix-map "~" 'vc-version-other-window))) |
998 | ||
b662fbb8 RM |
999 | (if (not (boundp 'vc-menu-map)) |
1000 | ;; Don't do the menu bindings if menu-bar.el wasn't loaded to defvar | |
1001 | ;; vc-menu-map. | |
1002 | () | |
1003 | ;;(define-key vc-menu-map [show-files] | |
1004 | ;; '("Show Files under VC" . (vc-directory t))) | |
1005 | (define-key vc-menu-map [vc-directory] '("Show Locked Files" . vc-directory)) | |
1006 | (define-key vc-menu-map [separator1] '("----")) | |
1007 | (define-key vc-menu-map [vc-rename-file] '("Rename File" . vc-rename-file)) | |
1008 | (define-key vc-menu-map [vc-version-other-window] | |
1009 | '("Show Other Version" . vc-version-other-window)) | |
1010 | (define-key vc-menu-map [vc-diff] '("Compare with Last Version" . vc-diff)) | |
1011 | (define-key vc-menu-map [vc-update-change-log] | |
1012 | '("Update ChangeLog" . vc-update-change-log)) | |
1013 | (define-key vc-menu-map [vc-print-log] '("Show History" . vc-print-log)) | |
1014 | (define-key vc-menu-map [separator2] '("----")) | |
1015 | (define-key vc-menu-map [undo] '("Undo Last Check-In" . vc-cancel-version)) | |
1016 | (define-key vc-menu-map [vc-revert-buffer] | |
1017 | '("Revert to Last Version" . vc-revert-buffer)) | |
1018 | (define-key vc-menu-map [vc-insert-header] | |
1019 | '("Insert Header" . vc-insert-headers)) | |
1020 | (define-key vc-menu-map [vc-menu-check-in] '("Check In" . vc-next-action)) | |
1021 | (define-key vc-menu-map [vc-check-out] '("Check Out" . vc-toggle-read-only)) | |
1022 | (define-key vc-menu-map [vc-register] '("Register" . vc-register)) | |
1023 | (put 'vc-rename-file 'menu-enable 'vc-mode) | |
1024 | (put 'vc-version-other-window 'menu-enable 'vc-mode) | |
1025 | (put 'vc-diff 'menu-enable 'vc-mode) | |
1026 | (put 'vc-update-change-log 'menu-enable | |
f2ee4191 | 1027 | '(eq (vc-buffer-backend) 'RCS)) |
b662fbb8 RM |
1028 | (put 'vc-print-log 'menu-enable 'vc-mode) |
1029 | (put 'vc-cancel-version 'menu-enable 'vc-mode) | |
1030 | (put 'vc-revert-buffer 'menu-enable 'vc-mode) | |
1031 | (put 'vc-insert-headers 'menu-enable 'vc-mode) | |
1032 | (put 'vc-next-action 'menu-enable '(and vc-mode (not buffer-read-only))) | |
1033 | (put 'vc-toggle-read-only 'menu-enable '(and vc-mode buffer-read-only)) | |
76a8bf4c | 1034 | (put 'vc-register 'menu-enable '(and buffer-file-name (not vc-mode))) |
b662fbb8 | 1035 | ) |
594722a8 | 1036 | |
594722a8 ER |
1037 | (provide 'vc-hooks) |
1038 | ||
1039 | ;;; vc-hooks.el ends here |