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aae56ea7 | 1 | ;;; vc-hooks.el --- resident support for version-control |
594722a8 | 2 | |
b499b50b | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998 Free Software Foundation, Inc. |
594722a8 | 4 | |
28a25aa5 AS |
5 | ;; Author: Eric S. Raymond <esr@snark.thyrsus.com> |
6 | ;; Maintainer: Andre Spiegel <spiegel@inf.fu-berlin.de> | |
594722a8 | 7 | |
8321b22a | 8 | ;; $Id: vc-hooks.el,v 1.1 2000/01/10 13:25:12 gerd Exp gerd $ |
f4c72097 | 9 | |
594722a8 ER |
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 | |
b578f267 EN |
23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
25 | ;; Boston, MA 02111-1307, USA. | |
594722a8 ER |
26 | |
27 | ;;; Commentary: | |
28 | ||
f2ee4191 RS |
29 | ;; This is the always-loaded portion of VC. |
30 | ;; It takes care VC-related activities that are done when you visit a file, | |
31 | ;; so that vc.el itself is loaded only when you use a VC command. | |
594722a8 ER |
32 | ;; See the commentary of vc.el. |
33 | ||
34 | ;;; Code: | |
35 | ||
e1c0c2d1 KH |
36 | ;; Customization Variables (the rest is in vc.el) |
37 | ||
50bec091 | 38 | (defcustom vc-default-back-end nil |
e1c0c2d1 | 39 | "*Back-end actually used by this interface; may be SCCS or RCS. |
50bec091 KH |
40 | The value is only computed when needed to avoid an expensive search." |
41 | :type '(choice (const nil) (const RCS) (const SCCS)) | |
42 | :group 'vc) | |
e1c0c2d1 | 43 | |
50bec091 | 44 | (defcustom vc-handle-cvs t |
0b086efb | 45 | "*If non-nil, use VC for files managed with CVS. |
50bec091 KH |
46 | If it is nil, don't use VC for those files." |
47 | :type 'boolean | |
48 | :group 'vc) | |
0b086efb | 49 | |
50bec091 | 50 | (defcustom vc-rcsdiff-knows-brief nil |
31888047 AS |
51 | "*Indicates whether rcsdiff understands the --brief option. |
52 | The value is either `yes', `no', or nil. If it is nil, VC tries | |
50bec091 KH |
53 | to use --brief and sets this variable to remember whether it worked." |
54 | :type '(choice (const nil) (const yes) (const no)) | |
55 | :group 'vc) | |
31888047 | 56 | |
50bec091 | 57 | (defcustom vc-path |
e1c0c2d1 KH |
58 | (if (file-directory-p "/usr/sccs") |
59 | '("/usr/sccs") | |
60 | nil) | |
50bec091 KH |
61 | "*List of extra directories to search for version control commands." |
62 | :type '(repeat directory) | |
63 | :group 'vc) | |
e1c0c2d1 | 64 | |
50bec091 | 65 | (defcustom vc-master-templates |
594722a8 | 66 | '(("%sRCS/%s,v" . RCS) ("%s%s,v" . RCS) ("%sRCS/%s" . RCS) |
174edc13 | 67 | ("%sSCCS/s.%s" . SCCS) ("%ss.%s". SCCS) |
809c22a2 AS |
68 | vc-find-cvs-master |
69 | vc-search-sccs-project-dir) | |
594722a8 ER |
70 | "*Where to look for version-control master files. |
71 | The first pair corresponding to a given back end is used as a template | |
c20369f0 | 72 | when creating new masters. |
50bec091 KH |
73 | Setting this variable to nil turns off use of VC entirely." |
74 | :type '(repeat sexp) | |
75 | :group 'vc) | |
594722a8 | 76 | |
50bec091 | 77 | (defcustom vc-make-backup-files nil |
5032bd23 | 78 | "*If non-nil, backups of registered files are made as with other files. |
50bec091 KH |
79 | If nil (the default), files covered by version control don't get backups." |
80 | :type 'boolean | |
81 | :group 'vc) | |
594722a8 | 82 | |
50bec091 | 83 | (defcustom vc-follow-symlinks 'ask |
b8063212 AS |
84 | "*Indicates what to do if you visit a symbolic link to a file |
85 | that is under version control. Editing such a file through the | |
86 | link bypasses the version control system, which is dangerous and | |
87 | probably not what you want. | |
88 | If this variable is t, VC follows the link and visits the real file, | |
89 | telling you about it in the echo area. If it is `ask', VC asks for | |
90 | confirmation whether it should follow the link. If nil, the link is | |
50bec091 KH |
91 | visited and a warning displayed." |
92 | :type '(choice (const ask) (const nil) (const t)) | |
93 | :group 'vc) | |
b8063212 | 94 | |
50bec091 | 95 | (defcustom vc-display-status t |
624c0e9d | 96 | "*If non-nil, display revision number and lock status in modeline. |
50bec091 KH |
97 | Otherwise, not displayed." |
98 | :type 'boolean | |
99 | :group 'vc) | |
100 | ||
198d5c00 | 101 | |
50bec091 KH |
102 | (defcustom vc-consult-headers t |
103 | "*If non-nil, identify work files by searching for version headers." | |
104 | :type 'boolean | |
105 | :group 'vc) | |
e1c0c2d1 | 106 | |
50bec091 | 107 | (defcustom vc-keep-workfiles t |
e1c0c2d1 KH |
108 | "*If non-nil, don't delete working files after registering changes. |
109 | If the back-end is CVS, workfiles are always kept, regardless of the | |
50bec091 KH |
110 | value of this flag." |
111 | :type 'boolean | |
112 | :group 'vc) | |
e1c0c2d1 | 113 | |
50bec091 | 114 | (defcustom vc-mistrust-permissions nil |
95420811 AS |
115 | "*If non-nil, don't assume that permissions and ownership track |
116 | version-control status. If nil, do rely on the permissions. | |
50bec091 KH |
117 | See also variable `vc-consult-headers'." |
118 | :type 'boolean | |
119 | :group 'vc) | |
e66eac08 | 120 | |
b499b50b DL |
121 | (defcustom vc-ignore-vc-files nil |
122 | "*If non-nil don't look for version control information when finding files. | |
123 | ||
124 | It may be useful to set this if (say) you edit files in a directory | |
125 | containing corresponding RCS files but don't have RCS available; | |
126 | similarly for other version control systems." | |
127 | :type 'boolean | |
cd32a7ba DN |
128 | :group 'vc |
129 | :version "20.3") | |
b499b50b | 130 | |
e66eac08 AS |
131 | (defun vc-mistrust-permissions (file) |
132 | ;; Access function to the above. | |
133 | (or (eq vc-mistrust-permissions 't) | |
134 | (and vc-mistrust-permissions | |
135 | (funcall vc-mistrust-permissions | |
136 | (vc-backend-subdirectory-name file))))) | |
137 | ||
594722a8 | 138 | ;; Tell Emacs about this new kind of minor mode |
7bc2b98b ER |
139 | (if (not (assoc 'vc-mode minor-mode-alist)) |
140 | (setq minor-mode-alist (cons '(vc-mode vc-mode) | |
594722a8 ER |
141 | minor-mode-alist))) |
142 | ||
7bc2b98b | 143 | (make-variable-buffer-local 'vc-mode) |
c43e436c | 144 | (put 'vc-mode 'permanent-local t) |
594722a8 ER |
145 | |
146 | ;; We need a notion of per-file properties because the version | |
f2ee4191 RS |
147 | ;; control state of a file is expensive to derive --- we compute |
148 | ;; them when the file is initially found, keep them up to date | |
149 | ;; during any subsequent VC operations, and forget them when | |
150 | ;; the buffer is killed. | |
594722a8 | 151 | |
80169ab5 ER |
152 | (defmacro vc-error-occurred (&rest body) |
153 | (list 'condition-case nil (cons 'progn (append body '(nil))) '(error t))) | |
154 | ||
594722a8 ER |
155 | (defvar vc-file-prop-obarray [0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0] |
156 | "Obarray for per-file properties.") | |
157 | ||
f2ee4191 RS |
158 | (defvar vc-buffer-backend t) |
159 | (make-variable-buffer-local 'vc-buffer-backend) | |
160 | ||
594722a8 ER |
161 | (defun vc-file-setprop (file property value) |
162 | ;; set per-file property | |
163 | (put (intern file vc-file-prop-obarray) property value)) | |
164 | ||
165 | (defun vc-file-getprop (file property) | |
166 | ;; get per-file property | |
167 | (get (intern file vc-file-prop-obarray) property)) | |
168 | ||
e1c0c2d1 KH |
169 | (defun vc-file-clearprops (file) |
170 | ;; clear all properties of a given file | |
171 | (setplist (intern file vc-file-prop-obarray) nil)) | |
f2ee4191 | 172 | |
02d383eb RS |
173 | ;;; Functions that determine property values, by examining the |
174 | ;;; working file, the master file, or log program output | |
e1c0c2d1 KH |
175 | |
176 | (defun vc-match-substring (bn) | |
177 | (buffer-substring (match-beginning bn) (match-end bn))) | |
178 | ||
179 | (defun vc-lock-file (file) | |
180 | ;; Generate lock file name corresponding to FILE | |
181 | (let ((master (vc-name file))) | |
182 | (and | |
183 | master | |
184 | (string-match "\\(.*/\\)s\\.\\(.*\\)" master) | |
185 | (concat | |
186 | (substring master (match-beginning 1) (match-end 1)) | |
187 | "p." | |
188 | (substring master (match-beginning 2) (match-end 2)))))) | |
189 | ||
190 | (defun vc-parse-buffer (patterns &optional file properties) | |
191 | ;; Use PATTERNS to parse information out of the current buffer. | |
192 | ;; Each element of PATTERNS is a list of 2 to 3 elements. The first element | |
193 | ;; is the pattern to be matched, and the second (an integer) is the | |
194 | ;; number of the subexpression that should be returned. If there's | |
195 | ;; a third element (also the number of a subexpression), that | |
196 | ;; subexpression is assumed to be a date field and we want the most | |
8321b22a | 197 | ;; recent entry matching the template; this works for RCS format dates only. |
e1c0c2d1 KH |
198 | ;; If FILE and PROPERTIES are given, the latter must be a list of |
199 | ;; properties of the same length as PATTERNS; each property is assigned | |
200 | ;; the corresponding value. | |
201 | (mapcar (function (lambda (p) | |
202 | (goto-char (point-min)) | |
203 | (cond | |
204 | ((eq (length p) 2) ;; search for first entry | |
205 | (let ((value nil)) | |
206 | (if (re-search-forward (car p) nil t) | |
207 | (setq value (vc-match-substring (elt p 1)))) | |
208 | (if file | |
209 | (progn (vc-file-setprop file (car properties) value) | |
210 | (setq properties (cdr properties)))) | |
211 | value)) | |
212 | ((eq (length p) 3) ;; search for latest entry | |
213 | (let ((latest-date "") (latest-val)) | |
214 | (while (re-search-forward (car p) nil t) | |
215 | (let ((date (vc-match-substring (elt p 2)))) | |
8321b22a GM |
216 | ;; Most (but not all) versions of RCS use two-digit years |
217 | ;; to represent dates in the range 1900 through 1999. | |
218 | ;; The two-digit and four-digit notations can both appear | |
219 | ;; in the same file. Normalize the two-digit versions. | |
220 | (save-match-data | |
221 | (if (string-match "\\`[0-9][0-9]\\." date) | |
222 | (setq date (concat "19" date)))) | |
e1c0c2d1 KH |
223 | (if (string< latest-date date) |
224 | (progn | |
225 | (setq latest-date date) | |
226 | (setq latest-val | |
227 | (vc-match-substring (elt p 1))))))) | |
228 | (if file | |
229 | (progn (vc-file-setprop file (car properties) latest-val) | |
230 | (setq properties (cdr properties)))) | |
231 | latest-val))))) | |
232 | patterns) | |
233 | ) | |
234 | ||
02d383eb RS |
235 | (defun vc-insert-file (file &optional limit blocksize) |
236 | ;; Insert the contents of FILE into the current buffer. | |
237 | ;; Optional argument LIMIT is a regexp. If present, | |
238 | ;; the file is inserted in chunks of size BLOCKSIZE | |
a7acbbe4 | 239 | ;; (default 8 kByte), until the first occurrence of |
02d383eb RS |
240 | ;; LIMIT is found. The function returns nil if FILE |
241 | ;; doesn't exist. | |
07de4c3d | 242 | (erase-buffer) |
02d383eb RS |
243 | (cond ((file-exists-p file) |
244 | (cond (limit | |
245 | (if (not blocksize) (setq blocksize 8192)) | |
246 | (let (found s) | |
247 | (while (not found) | |
248 | (setq s (buffer-size)) | |
249 | (goto-char (1+ s)) | |
250 | (setq found | |
251 | (or (zerop (car (cdr | |
252 | (insert-file-contents file nil s | |
253 | (+ s blocksize))))) | |
254 | (progn (beginning-of-line) | |
255 | (re-search-forward limit nil t))))))) | |
256 | (t (insert-file-contents file))) | |
257 | (set-buffer-modified-p nil) | |
258 | (auto-save-mode nil) | |
259 | t) | |
260 | (t nil))) | |
261 | ||
262 | (defun vc-parse-locks (file locks) | |
263 | ;; Parse RCS or SCCS locks. | |
264 | ;; The result is a list of the form ((VERSION USER) (VERSION USER) ...), | |
265 | ;; which is returned and stored into the property `vc-master-locks'. | |
266 | (if (not locks) | |
267 | (vc-file-setprop file 'vc-master-locks 'none) | |
268 | (let ((found t) (index 0) master-locks version user) | |
269 | (cond ((eq (vc-backend file) 'SCCS) | |
270 | (while (string-match "^\\([0-9.]+\\) [0-9.]+ \\([^ ]+\\) .*\n?" | |
271 | locks index) | |
272 | (setq version (substring locks | |
273 | (match-beginning 1) (match-end 1))) | |
274 | (setq user (substring locks | |
275 | (match-beginning 2) (match-end 2))) | |
276 | (setq master-locks (append master-locks | |
277 | (list (cons version user)))) | |
278 | (setq index (match-end 0)))) | |
279 | ((eq (vc-backend file) 'RCS) | |
280 | (while (string-match "[ \t\n]*\\([^:]+\\):\\([0-9.]+\\)" | |
281 | locks index) | |
282 | (setq version (substring locks | |
283 | (match-beginning 2) (match-end 2))) | |
284 | (setq user (substring locks | |
285 | (match-beginning 1) (match-end 1))) | |
286 | (setq master-locks (append master-locks | |
287 | (list (cons version user)))) | |
e66eac08 AS |
288 | (setq index (match-end 0))) |
289 | (if (string-match ";[ \t\n]+strict;" locks index) | |
290 | (vc-file-setprop file 'vc-checkout-model 'manual) | |
291 | (vc-file-setprop file 'vc-checkout-model 'implicit)))) | |
02d383eb RS |
292 | (vc-file-setprop file 'vc-master-locks (or master-locks 'none))))) |
293 | ||
7064821c AS |
294 | (defun vc-simple-command (okstatus command file &rest args) |
295 | ;; Simple version of vc-do-command, for use in vc-hooks only. | |
296 | ;; Don't switch to the *vc-info* buffer before running the | |
297 | ;; command, because that would change its default directory | |
298 | (save-excursion (set-buffer (get-buffer-create "*vc-info*")) | |
299 | (erase-buffer)) | |
300 | (let ((exec-path (append vc-path exec-path)) exec-status | |
301 | ;; Add vc-path to PATH for the execution of this command. | |
302 | (process-environment | |
303 | (cons (concat "PATH=" (getenv "PATH") | |
304 | path-separator | |
305 | (mapconcat 'identity vc-path path-separator)) | |
306 | process-environment))) | |
307 | (setq exec-status | |
308 | (apply 'call-process command nil "*vc-info*" nil | |
309 | (append args (list file)))) | |
310 | (cond ((> exec-status okstatus) | |
311 | (switch-to-buffer (get-file-buffer file)) | |
312 | (shrink-window-if-larger-than-buffer | |
313 | (display-buffer "*vc-info*")) | |
314 | (error "Couldn't find version control information"))) | |
315 | exec-status)) | |
316 | ||
eaff65c8 | 317 | (defun vc-parse-cvs-status (&optional full) |
8aa81ea8 | 318 | ;; Parse output of "cvs status" command in the current buffer and |
eaff65c8 AS |
319 | ;; set file properties accordingly. Unless FULL is t, parse only |
320 | ;; essential information. | |
321 | (let (file status) | |
322 | (goto-char (point-min)) | |
323 | (if (re-search-forward "^File: " nil t) | |
324 | (cond | |
325 | ((looking-at "no file") nil) | |
326 | ((re-search-forward "\\=\\([^ \t]+\\)" nil t) | |
327 | (setq file (concat default-directory (match-string 1))) | |
328 | (vc-file-setprop file 'vc-backend 'CVS) | |
329 | (if (not (re-search-forward "\\=[ \t]+Status: \\(.*\\)" nil t)) | |
330 | (setq status "Unknown") | |
331 | (setq status (match-string 1))) | |
332 | (if (and full | |
333 | (re-search-forward | |
334 | "\\(RCS Version\\|RCS Revision\\|Repository revision\\):[\t ]+\\([0-9.]+\\)" | |
335 | nil t)) | |
336 | (vc-file-setprop file 'vc-latest-version (match-string 2))) | |
337 | (cond | |
338 | ((string-match "Up-to-date" status) | |
339 | (vc-file-setprop file 'vc-cvs-status 'up-to-date) | |
340 | (vc-file-setprop file 'vc-checkout-time | |
341 | (nth 5 (file-attributes file)))) | |
342 | ((vc-file-setprop file 'vc-cvs-status | |
343 | (cond | |
344 | ((string-match "Locally Modified" status) 'locally-modified) | |
345 | ((string-match "Needs Merge" status) 'needs-merge) | |
346 | ((string-match "Needs \\(Checkout\\|Patch\\)" status) | |
347 | 'needs-checkout) | |
edad8a09 AS |
348 | ((string-match "Unresolved Conflict" status) |
349 | 'unresolved-conflict) | |
350 | ((string-match "File had conflicts on merge" status) | |
351 | 'unresolved-conflict) | |
eaff65c8 AS |
352 | ((string-match "Locally Added" status) 'locally-added) |
353 | ((string-match "New file!" status) 'locally-added) | |
354 | (t 'unknown)))))))))) | |
8aa81ea8 | 355 | |
02d383eb RS |
356 | (defun vc-fetch-master-properties (file) |
357 | ;; Fetch those properties of FILE that are stored in the master file. | |
1efcbf46 RS |
358 | ;; For an RCS file, we don't get vc-latest-version vc-your-latest-version |
359 | ;; here because that is slow. | |
360 | ;; That gets done if/when the functions vc-latest-version | |
361 | ;; and vc-your-latest-version get called. | |
02d383eb RS |
362 | (save-excursion |
363 | (cond | |
364 | ((eq (vc-backend file) 'SCCS) | |
365 | (set-buffer (get-buffer-create "*vc-info*")) | |
366 | (if (vc-insert-file (vc-lock-file file)) | |
07de4c3d | 367 | (vc-parse-locks file (buffer-string)) |
02d383eb RS |
368 | (vc-file-setprop file 'vc-master-locks 'none)) |
369 | (vc-insert-file (vc-name file) "^\001e") | |
370 | (vc-parse-buffer | |
371 | (list '("^\001d D \\([^ ]+\\)" 1) | |
372 | (list (concat "^\001d D \\([^ ]+\\) .* " | |
2a11c6f3 | 373 | (regexp-quote (vc-user-login-name)) " ") 1)) |
02d383eb RS |
374 | file |
375 | '(vc-latest-version vc-your-latest-version))) | |
376 | ||
377 | ((eq (vc-backend file) 'RCS) | |
378 | (set-buffer (get-buffer-create "*vc-info*")) | |
e66eac08 | 379 | (vc-insert-file (vc-name file) "^[0-9]") |
02d383eb RS |
380 | (vc-parse-buffer |
381 | (list '("^head[ \t\n]+\\([^;]+\\);" 1) | |
382 | '("^branch[ \t\n]+\\([^;]+\\);" 1) | |
e66eac08 | 383 | '("^locks[ \t\n]*\\([^;]*;\\([ \t\n]*strict;\\)?\\)" 1)) |
02d383eb RS |
384 | file |
385 | '(vc-head-version | |
386 | vc-default-branch | |
1efcbf46 | 387 | vc-master-locks)) |
af5e65b9 AS |
388 | ;; determine vc-master-workfile-version: it is either the head |
389 | ;; of the trunk, the head of the default branch, or the | |
390 | ;; "default branch" itself, if that is a full revision number. | |
02d383eb RS |
391 | (let ((default-branch (vc-file-getprop file 'vc-default-branch))) |
392 | (cond | |
393 | ;; no default branch | |
394 | ((or (not default-branch) (string= "" default-branch)) | |
af5e65b9 | 395 | (vc-file-setprop file 'vc-master-workfile-version |
02d383eb RS |
396 | (vc-file-getprop file 'vc-head-version))) |
397 | ;; default branch is actually a revision | |
398 | ((string-match "^[0-9]+\\.[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*$" | |
399 | default-branch) | |
af5e65b9 AS |
400 | (vc-file-setprop file 'vc-master-workfile-version default-branch)) |
401 | ;; else, search for the head of the default branch | |
07de4c3d | 402 | (t (vc-insert-file (vc-name file) "^desc") |
1efcbf46 | 403 | (vc-parse-buffer (list (list |
02d383eb RS |
404 | (concat "^\\(" |
405 | (regexp-quote default-branch) | |
406 | "\\.[0-9]+\\)\ndate[ \t]+\\([0-9.]+\\);") 1 2)) | |
af5e65b9 | 407 | file '(vc-master-workfile-version))))) |
02d383eb RS |
408 | ;; translate the locks |
409 | (vc-parse-locks file (vc-file-getprop file 'vc-master-locks))) | |
410 | ||
411 | ((eq (vc-backend file) 'CVS) | |
7064821c | 412 | (save-excursion |
719dcee9 AS |
413 | ;; Call "cvs status" in the right directory, passing only the |
414 | ;; nondirectory part of the file name -- otherwise CVS might | |
415 | ;; silently give a wrong result. | |
416 | (let ((default-directory (file-name-directory file))) | |
417 | (vc-simple-command 0 "cvs" (file-name-nondirectory file) "status")) | |
7064821c | 418 | (set-buffer (get-buffer "*vc-info*")) |
eaff65c8 | 419 | (vc-parse-cvs-status t)))) |
3be2a362 RS |
420 | (if (get-buffer "*vc-info*") |
421 | (kill-buffer (get-buffer "*vc-info*"))))) | |
e1c0c2d1 KH |
422 | |
423 | ;;; Functions that determine property values, by examining the | |
424 | ;;; working file, the master file, or log program output | |
425 | ||
426 | (defun vc-consult-rcs-headers (file) | |
427 | ;; Search for RCS headers in FILE, and set properties | |
428 | ;; accordingly. This function can be disabled by setting | |
429 | ;; vc-consult-headers to nil. | |
430 | ;; Returns: nil if no headers were found | |
431 | ;; (or if the feature is disabled, | |
432 | ;; or if there is currently no buffer | |
433 | ;; visiting FILE) | |
434 | ;; 'rev if a workfile revision was found | |
435 | ;; 'rev-and-lock if revision and lock info was found | |
e66eac08 | 436 | (cond |
e1c0c2d1 | 437 | ((or (not vc-consult-headers) |
02d383eb | 438 | (not (get-file-buffer file))) nil) |
e66eac08 AS |
439 | ((let (status version locking-user) |
440 | (save-excursion | |
e1c0c2d1 KH |
441 | (set-buffer (get-file-buffer file)) |
442 | (goto-char (point-min)) | |
443 | (cond | |
444 | ;; search for $Id or $Header | |
445 | ;; ------------------------- | |
b13a9b1b RS |
446 | ;; The `\ 's below avoid an RCS 5.7 bug when checking in this file. |
447 | ((or (and (search-forward "$Id\ : " nil t) | |
1efcbf46 RS |
448 | (looking-at "[^ ]+ \\([0-9.]+\\) ")) |
449 | (and (progn (goto-char (point-min)) | |
b13a9b1b | 450 | (search-forward "$Header\ : " nil t)) |
1efcbf46 | 451 | (looking-at "[^ ]+ \\([0-9.]+\\) "))) |
04094290 | 452 | (goto-char (match-end 0)) |
e1c0c2d1 | 453 | ;; if found, store the revision number ... |
55572259 KH |
454 | (setq version (buffer-substring-no-properties (match-beginning 1) |
455 | (match-end 1))) | |
e66eac08 AS |
456 | ;; ... and check for the locking state |
457 | (cond | |
458 | ((looking-at | |
459 | (concat "[0-9]+[/-][01][0-9][/-][0-3][0-9] " ; date | |
460 | "[0-2][0-9]:[0-5][0-9]+:[0-6][0-9]+\\([+-][0-9:]+\\)? " ; time | |
461 | "[^ ]+ [^ ]+ ")) ; author & state | |
462 | (goto-char (match-end 0)) ; [0-6] in regexp handles leap seconds | |
ce27f264 | 463 | (cond |
e66eac08 AS |
464 | ;; unlocked revision |
465 | ((looking-at "\\$") | |
466 | (setq locking-user 'none) | |
467 | (setq status 'rev-and-lock)) | |
468 | ;; revision is locked by some user | |
469 | ((looking-at "\\([^ ]+\\) \\$") | |
470 | (setq locking-user | |
55572259 KH |
471 | (buffer-substring-no-properties (match-beginning 1) |
472 | (match-end 1))) | |
e66eac08 AS |
473 | (setq status 'rev-and-lock)) |
474 | ;; everything else: false | |
475 | (nil))) | |
476 | ;; unexpected information in | |
477 | ;; keyword string --> quit | |
478 | (nil))) | |
e1c0c2d1 KH |
479 | ;; search for $Revision |
480 | ;; -------------------- | |
481 | ((re-search-forward (concat "\\$" | |
482 | "Revision: \\([0-9.]+\\) \\$") | |
483 | nil t) | |
484 | ;; if found, store the revision number ... | |
55572259 KH |
485 | (setq version (buffer-substring-no-properties (match-beginning 1) |
486 | (match-end 1))) | |
e66eac08 AS |
487 | ;; and see if there's any lock information |
488 | (goto-char (point-min)) | |
489 | (if (re-search-forward (concat "\\$" "Locker:") nil t) | |
490 | (cond ((looking-at " \\([^ ]+\\) \\$") | |
55572259 KH |
491 | (setq locking-user (buffer-substring-no-properties |
492 | (match-beginning 1) | |
493 | (match-end 1))) | |
e66eac08 AS |
494 | (setq status 'rev-and-lock)) |
495 | ((looking-at " *\\$") | |
496 | (setq locking-user 'none) | |
497 | (setq status 'rev-and-lock)) | |
498 | (t | |
499 | (setq locking-user 'none) | |
500 | (setq status 'rev-and-lock))) | |
501 | (setq status 'rev))) | |
e1c0c2d1 KH |
502 | ;; else: nothing found |
503 | ;; ------------------- | |
e66eac08 AS |
504 | (t nil))) |
505 | (if status (vc-file-setprop file 'vc-workfile-version version)) | |
506 | (and (eq status 'rev-and-lock) | |
507 | (eq (vc-backend file) 'RCS) | |
508 | (vc-file-setprop file 'vc-locking-user locking-user) | |
509 | ;; If the file has headers, we don't want to query the master file, | |
510 | ;; because that would eliminate all the performance gain the headers | |
511 | ;; brought us. We therefore use a heuristic for the checkout model | |
512 | ;; now: If we trust the file permissions, and the file is not | |
513 | ;; locked, then if the file is read-only the checkout model is | |
514 | ;; `manual', otherwise `implicit'. | |
515 | (not (vc-mistrust-permissions file)) | |
516 | (not (vc-locking-user file)) | |
517 | (if (string-match ".r-..-..-." (nth 8 (file-attributes file))) | |
518 | (vc-file-setprop file 'vc-checkout-model 'manual) | |
7064821c AS |
519 | (vc-file-setprop file 'vc-checkout-model 'implicit))) |
520 | status)))) | |
e1c0c2d1 | 521 | |
02d383eb RS |
522 | ;;; Access functions to file properties |
523 | ;;; (Properties should be _set_ using vc-file-setprop, but | |
524 | ;;; _retrieved_ only through these functions, which decide | |
525 | ;;; if the property is already known or not. A property should | |
526 | ;;; only be retrieved by vc-file-getprop if there is no | |
527 | ;;; access function.) | |
528 | ||
529 | ;;; properties indicating the backend | |
530 | ;;; being used for FILE | |
e1c0c2d1 KH |
531 | |
532 | (defun vc-backend-subdirectory-name (&optional file) | |
533 | ;; Where the master and lock files for the current directory are kept | |
534 | (symbol-name | |
535 | (or | |
536 | (and file (vc-backend file)) | |
537 | vc-default-back-end | |
538 | (setq vc-default-back-end (if (vc-find-binary "rcs") 'RCS 'SCCS))))) | |
539 | ||
02d383eb | 540 | (defun vc-name (file) |
b23a2306 AS |
541 | "Return the master name of a file, nil if it is not registered. |
542 | For CVS, the full name of CVS/Entries is returned." | |
02d383eb | 543 | (or (vc-file-getprop file 'vc-name) |
8aa81ea8 RS |
544 | ;; Use the caching mechanism of vc-backend, below. |
545 | (if (vc-backend file) | |
546 | (vc-file-getprop file 'vc-name)))) | |
e1c0c2d1 | 547 | |
02d383eb RS |
548 | (defun vc-backend (file) |
549 | "Return the version-control type of a file, nil if it is not registered." | |
8aa81ea8 RS |
550 | ;; Note that internally, Emacs remembers unregistered |
551 | ;; files by setting the property to `none'. | |
552 | (if file | |
553 | (let ((property (vc-file-getprop file 'vc-backend)) | |
554 | (name-and-type)) | |
555 | (cond ((eq property 'none) nil) | |
556 | (property) | |
557 | (t (setq name-and-type (vc-registered file)) | |
558 | (if name-and-type | |
559 | (progn | |
560 | (vc-file-setprop file 'vc-name (car name-and-type)) | |
561 | (vc-file-setprop file 'vc-backend (cdr name-and-type))) | |
562 | (vc-file-setprop file 'vc-backend 'none) | |
563 | nil)))))) | |
e1c0c2d1 | 564 | |
04446ed0 AS |
565 | (defun vc-checkout-model (file) |
566 | ;; Return `manual' if the user has to type C-x C-q to check out FILE. | |
e66eac08 AS |
567 | ;; Return `implicit' if the file can be modified without locking it first. |
568 | (or | |
569 | (vc-file-getprop file 'vc-checkout-model) | |
570 | (cond | |
571 | ((eq (vc-backend file) 'SCCS) | |
572 | (vc-file-setprop file 'vc-checkout-model 'manual)) | |
573 | ((eq (vc-backend file) 'RCS) | |
574 | (vc-consult-rcs-headers file) | |
575 | (or (vc-file-getprop file 'vc-checkout-model) | |
576 | (progn (vc-fetch-master-properties file) | |
577 | (vc-file-getprop file 'vc-checkout-model)))) | |
578 | ((eq (vc-backend file) 'CVS) | |
579 | (vc-file-setprop file 'vc-checkout-model | |
403d549c RS |
580 | (cond |
581 | ((getenv "CVSREAD") 'manual) | |
582 | ;; If the file is not writeable, this is probably because the | |
583 | ;; file is being "watched" by other developers. Use "manual" | |
584 | ;; checkout in this case. (If vc-mistrust-permissions was t, | |
585 | ;; we actually shouldn't trust this, but there is no other way | |
586 | ;; to learn this from CVS at the moment (version 1.9).) | |
587 | ((string-match "r-..-..-." (nth 8 (file-attributes file))) | |
588 | 'manual) | |
589 | (t 'implicit))))))) | |
04446ed0 | 590 | |
02d383eb | 591 | ;;; properties indicating the locking state |
e1c0c2d1 KH |
592 | |
593 | (defun vc-cvs-status (file) | |
594 | ;; Return the cvs status of FILE | |
595 | ;; (Status field in output of "cvs status") | |
596 | (cond ((vc-file-getprop file 'vc-cvs-status)) | |
02d383eb | 597 | (t (vc-fetch-master-properties file) |
e1c0c2d1 KH |
598 | (vc-file-getprop file 'vc-cvs-status)))) |
599 | ||
02d383eb RS |
600 | (defun vc-master-locks (file) |
601 | ;; Return the lock entries in the master of FILE. | |
602 | ;; Return 'none if there are no such entries, and a list | |
603 | ;; of the form ((VERSION USER) (VERSION USER) ...) otherwise. | |
604 | (cond ((vc-file-getprop file 'vc-master-locks)) | |
605 | (t (vc-fetch-master-properties file) | |
606 | (vc-file-getprop file 'vc-master-locks)))) | |
607 | ||
608 | (defun vc-master-locking-user (file) | |
609 | ;; Return the master file's idea of who is locking | |
610 | ;; the current workfile version of FILE. | |
611 | ;; Return 'none if it is not locked. | |
612 | (let ((master-locks (vc-master-locks file)) lock) | |
613 | (if (eq master-locks 'none) 'none | |
614 | ;; search for a lock on the current workfile version | |
615 | (setq lock (assoc (vc-workfile-version file) master-locks)) | |
616 | (cond (lock (cdr lock)) | |
617 | ('none))))) | |
618 | ||
7064821c AS |
619 | (defun vc-lock-from-permissions (file) |
620 | ;; If the permissions can be trusted for this file, determine the | |
621 | ;; locking state from them. Returns (user-login-name), `none', or nil. | |
622 | ;; This implementation assumes that any file which is under version | |
623 | ;; control and has -rw-r--r-- is locked by its owner. This is true | |
624 | ;; for both RCS and SCCS, which keep unlocked files at -r--r--r--. | |
625 | ;; We have to be careful not to exclude files with execute bits on; | |
626 | ;; scripts can be under version control too. Also, we must ignore the | |
627 | ;; group-read and other-read bits, since paranoid users turn them off. | |
628 | ;; This hack wins because calls to the somewhat expensive | |
629 | ;; `vc-fetch-master-properties' function only have to be made if | |
630 | ;; (a) the file is locked by someone other than the current user, | |
631 | ;; or (b) some untoward manipulation behind vc's back has changed | |
632 | ;; the owner or the `group' or `other' write bits. | |
633 | (let ((attributes (file-attributes file))) | |
634 | (if (not (vc-mistrust-permissions file)) | |
635 | (cond ((string-match ".r-..-..-." (nth 8 attributes)) | |
636 | (vc-file-setprop file 'vc-locking-user 'none)) | |
637 | ((and (= (nth 2 attributes) (user-uid)) | |
638 | (string-match ".rw..-..-." (nth 8 attributes))) | |
2a11c6f3 | 639 | (vc-file-setprop file 'vc-locking-user (vc-user-login-name))) |
7064821c AS |
640 | (nil))))) |
641 | ||
2a11c6f3 AS |
642 | (defun vc-user-login-name (&optional uid) |
643 | ;; Return the name under which the user is logged in, as a string. | |
644 | ;; (With optional argument UID, return the name of that user.) | |
645 | ;; This function does the same as `user-login-name', but unlike | |
646 | ;; that, it never returns nil. If a UID cannot be resolved, that | |
647 | ;; UID is returned as a string. | |
648 | (or (user-login-name uid) | |
649 | (and uid (number-to-string uid)) | |
650 | (number-to-string (user-uid)))) | |
651 | ||
7064821c | 652 | (defun vc-file-owner (file) |
1525b516 | 653 | ;; Return who owns FILE (user name, as a string). |
2a11c6f3 | 654 | (vc-user-login-name (nth 2 (file-attributes file)))) |
7064821c AS |
655 | |
656 | (defun vc-rcs-lock-from-diff (file) | |
657 | ;; Diff the file against the master version. If differences are found, | |
31888047 AS |
658 | ;; mark the file locked. This is only used for RCS with non-strict |
659 | ;; locking. (If "rcsdiff" doesn't understand --brief, we do a double-take | |
660 | ;; and remember the fact for the future.) | |
661 | (let* ((version (concat "-r" (vc-workfile-version file))) | |
662 | (status (if (eq vc-rcsdiff-knows-brief 'no) | |
663 | (vc-simple-command 1 "rcsdiff" file version) | |
664 | (vc-simple-command 2 "rcsdiff" file "--brief" version)))) | |
665 | (if (eq status 2) | |
666 | (if (not vc-rcsdiff-knows-brief) | |
667 | (setq vc-rcsdiff-knows-brief 'no | |
668 | status (vc-simple-command 1 "rcsdiff" file version)) | |
669 | (error "rcsdiff failed.")) | |
670 | (if (not vc-rcsdiff-knows-brief) (setq vc-rcsdiff-knows-brief 'yes))) | |
671 | (if (zerop status) | |
672 | (vc-file-setprop file 'vc-locking-user 'none) | |
673 | (vc-file-setprop file 'vc-locking-user (vc-file-owner file))))) | |
7064821c | 674 | |
e1c0c2d1 | 675 | (defun vc-locking-user (file) |
02d383eb | 676 | ;; Return the name of the person currently holding a lock on FILE. |
1525b516 | 677 | ;; Return nil if there is no such person. |
02d383eb | 678 | ;; Under CVS, a file is considered locked if it has been modified since |
7064821c | 679 | ;; it was checked out. |
02d383eb RS |
680 | ;; The property is cached. It is only looked up if it is currently nil. |
681 | ;; Note that, for a file that is not locked, the actual property value | |
7064821c | 682 | ;; is `none', to distinguish it from an unknown locking state. That value |
02d383eb RS |
683 | ;; is converted to nil by this function, and returned to the caller. |
684 | (let ((locking-user (vc-file-getprop file 'vc-locking-user))) | |
685 | (if locking-user | |
686 | ;; if we already know the property, return it | |
687 | (if (eq locking-user 'none) nil locking-user) | |
688 | ||
689 | ;; otherwise, infer the property... | |
690 | (cond | |
02d383eb | 691 | ((eq (vc-backend file) 'CVS) |
7064821c AS |
692 | (or (and (eq (vc-checkout-model file) 'manual) |
693 | (vc-lock-from-permissions file)) | |
b23a2306 AS |
694 | (and (equal (vc-file-getprop file 'vc-checkout-time) |
695 | (nth 5 (file-attributes file))) | |
696 | (vc-file-setprop file 'vc-locking-user 'none)) | |
1525b516 | 697 | (vc-file-setprop file 'vc-locking-user (vc-file-owner file)))) |
7064821c AS |
698 | |
699 | ((eq (vc-backend file) 'RCS) | |
700 | (let (p-lock) | |
701 | ||
702 | ;; Check for RCS headers first | |
703 | (or (eq (vc-consult-rcs-headers file) 'rev-and-lock) | |
704 | ||
705 | ;; If there are no headers, try to learn it | |
706 | ;; from the permissions. | |
707 | (and (setq p-lock (vc-lock-from-permissions file)) | |
708 | (if (eq p-lock 'none) | |
709 | ||
710 | ;; If the permissions say "not locked", we know | |
711 | ;; that the checkout model must be `manual'. | |
712 | (vc-file-setprop file 'vc-checkout-model 'manual) | |
713 | ||
714 | ;; If the permissions say "locked", we can only trust | |
715 | ;; this *if* the checkout model is `manual'. | |
716 | (eq (vc-checkout-model file) 'manual))) | |
717 | ||
718 | ;; Otherwise, use lock information from the master file. | |
719 | (vc-file-setprop file 'vc-locking-user | |
720 | (vc-master-locking-user file))) | |
721 | ||
722 | ;; Finally, if the file is not explicitly locked | |
723 | ;; it might still be locked implicitly. | |
724 | (and (eq (vc-file-getprop file 'vc-locking-user) 'none) | |
725 | (eq (vc-checkout-model file) 'implicit) | |
726 | (vc-rcs-lock-from-diff file)))) | |
727 | ||
728 | ((eq (vc-backend file) 'SCCS) | |
729 | (or (vc-lock-from-permissions file) | |
730 | (vc-file-setprop file 'vc-locking-user | |
aadce164 | 731 | (vc-master-locking-user file))))) |
7064821c AS |
732 | |
733 | ;; convert a possible 'none value | |
734 | (setq locking-user (vc-file-getprop file 'vc-locking-user)) | |
aadce164 | 735 | (if (eq locking-user 'none) nil locking-user)))) |
02d383eb RS |
736 | |
737 | ;;; properties to store current and recent version numbers | |
e1c0c2d1 KH |
738 | |
739 | (defun vc-latest-version (file) | |
740 | ;; Return version level of the latest version of FILE | |
02d383eb | 741 | (cond ((vc-file-getprop file 'vc-latest-version)) |
1efcbf46 | 742 | (t (vc-fetch-properties file) |
02d383eb | 743 | (vc-file-getprop file 'vc-latest-version)))) |
e1c0c2d1 KH |
744 | |
745 | (defun vc-your-latest-version (file) | |
746 | ;; Return version level of the latest version of FILE checked in by you | |
02d383eb | 747 | (cond ((vc-file-getprop file 'vc-your-latest-version)) |
1efcbf46 | 748 | (t (vc-fetch-properties file) |
02d383eb | 749 | (vc-file-getprop file 'vc-your-latest-version)))) |
e1c0c2d1 | 750 | |
af5e65b9 AS |
751 | (defun vc-master-workfile-version (file) |
752 | ;; Return the master file's idea of what is the current workfile version. | |
e1c0c2d1 | 753 | ;; This property is defined for RCS only. |
af5e65b9 | 754 | (cond ((vc-file-getprop file 'vc-master-workfile-version)) |
02d383eb | 755 | (t (vc-fetch-master-properties file) |
af5e65b9 | 756 | (vc-file-getprop file 'vc-master-workfile-version)))) |
e1c0c2d1 | 757 | |
1efcbf46 RS |
758 | (defun vc-fetch-properties (file) |
759 | ;; Fetch vc-latest-version and vc-your-latest-version | |
760 | ;; if that wasn't already done. | |
04094290 RS |
761 | (cond |
762 | ((eq (vc-backend file) 'RCS) | |
ee526b55 RS |
763 | (save-excursion |
764 | (set-buffer (get-buffer-create "*vc-info*")) | |
765 | (vc-insert-file (vc-name file) "^desc") | |
766 | (vc-parse-buffer | |
767 | (list '("^\\([0-9]+\\.[0-9.]+\\)\ndate[ \t]+\\([0-9.]+\\);" 1 2) | |
768 | (list (concat "^\\([0-9]+\\.[0-9.]+\\)\n" | |
769 | "date[ \t]+\\([0-9.]+\\);[ \t]+" | |
770 | "author[ \t]+" | |
2a11c6f3 | 771 | (regexp-quote (vc-user-login-name)) ";") 1 2)) |
ee526b55 | 772 | file |
07de4c3d RS |
773 | '(vc-latest-version vc-your-latest-version)) |
774 | (if (get-buffer "*vc-info*") | |
775 | (kill-buffer (get-buffer "*vc-info*"))))) | |
04094290 | 776 | (t (vc-fetch-master-properties file)) |
1efcbf46 RS |
777 | )) |
778 | ||
e1c0c2d1 KH |
779 | (defun vc-workfile-version (file) |
780 | ;; Return version level of the current workfile FILE | |
781 | ;; This is attempted by first looking at the RCS keywords. | |
782 | ;; If there are no keywords in the working file, | |
af5e65b9 | 783 | ;; vc-master-workfile-version is taken. |
e1c0c2d1 KH |
784 | ;; Note that this property is cached, that is, it is only |
785 | ;; looked up if it is nil. | |
786 | ;; For SCCS, this property is equivalent to vc-latest-version. | |
787 | (cond ((vc-file-getprop file 'vc-workfile-version)) | |
788 | ((eq (vc-backend file) 'SCCS) (vc-latest-version file)) | |
789 | ((eq (vc-backend file) 'RCS) | |
790 | (if (vc-consult-rcs-headers file) | |
791 | (vc-file-getprop file 'vc-workfile-version) | |
af5e65b9 | 792 | (let ((rev (cond ((vc-master-workfile-version file)) |
e1c0c2d1 KH |
793 | ((vc-latest-version file))))) |
794 | (vc-file-setprop file 'vc-workfile-version rev) | |
795 | rev))) | |
796 | ((eq (vc-backend file) 'CVS) | |
797 | (if (vc-consult-rcs-headers file) ;; CVS | |
798 | (vc-file-getprop file 'vc-workfile-version) | |
7b0e1b8f KH |
799 | (catch 'found |
800 | (vc-find-cvs-master (file-name-directory file) | |
801 | (file-name-nondirectory file))) | |
e1c0c2d1 | 802 | (vc-file-getprop file 'vc-workfile-version))))) |
f2ee4191 | 803 | |
594722a8 ER |
804 | ;;; actual version-control code starts here |
805 | ||
806 | (defun vc-registered (file) | |
18c8a18e PE |
807 | (let (handler handlers) |
808 | (if (boundp 'file-name-handler-alist) | |
b993101e | 809 | (setq handler (find-file-name-handler file 'vc-registered))) |
18c8a18e PE |
810 | (if handler |
811 | (funcall handler 'vc-registered file) | |
812 | ;; Search for a master corresponding to the given file | |
813 | (let ((dirname (or (file-name-directory file) "")) | |
814 | (basename (file-name-nondirectory file))) | |
815 | (catch 'found | |
816 | (mapcar | |
817 | (function (lambda (s) | |
174edc13 RS |
818 | (if (atom s) |
819 | (funcall s dirname basename) | |
820 | (let ((trial (format (car s) dirname basename))) | |
821 | (if (and (file-exists-p trial) | |
822 | ;; Make sure the file we found with name | |
823 | ;; TRIAL is not the source file itself. | |
824 | ;; That can happen with RCS-style names | |
825 | ;; if the file name is truncated | |
826 | ;; (e.g. to 14 chars). See if either | |
827 | ;; directory or attributes differ. | |
828 | (or (not (string= dirname | |
829 | (file-name-directory trial))) | |
830 | (not (equal | |
831 | (file-attributes file) | |
832 | (file-attributes trial))))) | |
833 | (throw 'found (cons trial (cdr s)))))))) | |
18c8a18e PE |
834 | vc-master-templates) |
835 | nil))))) | |
594722a8 | 836 | |
809c22a2 AS |
837 | (defun vc-sccs-project-dir () |
838 | ;; Return the full pathname of the SCCS PROJECTDIR, if it exists, | |
839 | ;; otherwise nil. The PROJECTDIR is indicated by the environment | |
840 | ;; variable of the same name. If its value starts with a slash, | |
841 | ;; it must be an absolute path name that points to the | |
842 | ;; directory where SCCS history files reside. If it does not | |
843 | ;; begin with a slash, it is taken as the name of a user, | |
844 | ;; and history files reside in an "src" or "source" subdirectory | |
845 | ;; of that user's home directory. | |
846 | (let ((project-dir (getenv "PROJECTDIR"))) | |
847 | (and project-dir | |
848 | (if (eq (elt project-dir 0) ?/) | |
849 | (if (file-exists-p (concat project-dir "/SCCS")) | |
850 | (concat project-dir "/SCCS/") | |
851 | (if (file-exists-p project-dir) | |
852 | project-dir)) | |
853 | (setq project-dir (expand-file-name (concat "~" project-dir))) | |
854 | (let (trial) | |
855 | (setq trial (concat project-dir "/src/SCCS")) | |
856 | (if (file-exists-p trial) | |
857 | (concat trial "/") | |
858 | (setq trial (concat project-dir "/src")) | |
859 | (if (file-exists-p trial) | |
860 | (concat trial "/") | |
861 | (setq trial (concat project-dir "/source/SCCS")) | |
862 | (if (file-exists-p trial) | |
863 | (concat trial "/") | |
864 | (setq trial (concat project-dir "/source/")) | |
865 | (if (file-exists-p trial) | |
866 | (concat trial "/")))))))))) | |
867 | ||
868 | (defun vc-search-sccs-project-dir (dirname basename) | |
869 | ;; Check if there is a master file for BASENAME in the | |
870 | ;; SCCS project directory. If yes, throw `found' as | |
871 | ;; expected by vc-registered. If not, return nil. | |
872 | (let* ((project-dir (vc-sccs-project-dir)) | |
873 | (master-file (and project-dir (concat project-dir "s." basename)))) | |
874 | (and master-file | |
875 | (file-exists-p master-file) | |
876 | (throw 'found (cons master-file 'SCCS))))) | |
877 | ||
174edc13 RS |
878 | (defun vc-find-cvs-master (dirname basename) |
879 | ;; Check if DIRNAME/BASENAME is handled by CVS. | |
809c22a2 | 880 | ;; If it is, do a (throw 'found (cons MASTER-FILE 'CVS)). |
b23a2306 AS |
881 | ;; Note: This function throws the name of CVS/Entries |
882 | ;; NOT that of the RCS master file (because we wouldn't be able | |
883 | ;; to access it under remote CVS). | |
884 | ;; The function returns nil if DIRNAME/BASENAME is not handled by CVS. | |
0b086efb RS |
885 | (if (and vc-handle-cvs |
886 | (file-directory-p (concat dirname "CVS/")) | |
b23a2306 | 887 | (file-readable-p (concat dirname "CVS/Entries"))) |
702220f3 | 888 | (let ((file (concat dirname basename)) |
702220f3 | 889 | buffer) |
174edc13 RS |
890 | (unwind-protect |
891 | (save-excursion | |
7064821c AS |
892 | (setq buffer (set-buffer (get-buffer-create "*vc-info*"))) |
893 | (vc-insert-file (concat dirname "CVS/Entries")) | |
174edc13 | 894 | (goto-char (point-min)) |
9fe89e73 AS |
895 | ;; make sure that the file name is searched |
896 | ;; case-sensitively - case-fold-search is a buffer-local | |
897 | ;; variable, so setting it here won't affect any other buffers | |
898 | (setq case-fold-search nil) | |
174edc13 | 899 | (cond |
702220f3 AS |
900 | ;; entry for a "locally added" file (not yet committed) |
901 | ((re-search-forward | |
902 | (concat "^/" (regexp-quote basename) "/0/") nil t) | |
903 | (vc-file-setprop file 'vc-checkout-time 0) | |
904 | (vc-file-setprop file 'vc-workfile-version "0") | |
905 | (throw 'found (cons (concat dirname "CVS/Entries") 'CVS))) | |
a93de381 | 906 | ;; normal entry |
174edc13 | 907 | ((re-search-forward |
b23a2306 | 908 | (concat "^/" (regexp-quote basename) |
702220f3 AS |
909 | ;; revision |
910 | "/\\([^/]*\\)" | |
911 | ;; timestamp | |
912 | "/[A-Z][a-z][a-z]" ;; week day (irrelevant) | |
913 | " \\([A-Z][a-z][a-z]\\)" ;; month name | |
914 | " *\\([0-9]*\\)" ;; day of month | |
915 | " \\([0-9]*\\):\\([0-9]*\\):\\([0-9]*\\)" ;; hms | |
916 | " \\([0-9]*\\)" ;; year | |
917 | ;; optional conflict field | |
918 | "\\(+[^/]*\\)?/") | |
174edc13 | 919 | nil t) |
b23a2306 AS |
920 | ;; We found it. Store away version number now that we |
921 | ;; are anyhow so close to finding it. | |
922 | (vc-file-setprop file | |
f2ee4191 | 923 | 'vc-workfile-version |
b23a2306 AS |
924 | (match-string 1)) |
925 | ;; If the file hasn't been modified since checkout, | |
926 | ;; store the checkout-time. | |
c18381d1 | 927 | (let ((mtime (nth 5 (file-attributes file))) |
702220f3 AS |
928 | (second (string-to-number (match-string 6))) |
929 | (minute (string-to-number (match-string 5))) | |
930 | (hour (string-to-number (match-string 4))) | |
931 | (day (string-to-number (match-string 3))) | |
932 | (year (string-to-number (match-string 7)))) | |
c18381d1 PE |
933 | (if (equal mtime |
934 | (encode-time | |
935 | second minute hour day | |
936 | (/ (string-match | |
702220f3 | 937 | (match-string 2) |
c18381d1 PE |
938 | "xxxJanFebMarAprMayJunJulAugSepOctNovDec") |
939 | 3) | |
940 | year 0)) | |
719dcee9 AS |
941 | (vc-file-setprop file 'vc-checkout-time mtime) |
942 | (vc-file-setprop file 'vc-checkout-time 0))) | |
b23a2306 | 943 | (throw 'found (cons (concat dirname "CVS/Entries") 'CVS))) |
702220f3 AS |
944 | ;; entry with arbitrary text as timestamp |
945 | ;; (this means we should consider it modified) | |
a93de381 | 946 | ((re-search-forward |
702220f3 AS |
947 | (concat "^/" (regexp-quote basename) |
948 | ;; revision | |
949 | "/\\([^/]*\\)" | |
950 | ;; timestamp (arbitrary text) | |
951 | "/[^/]*" | |
952 | ;; optional conflict field | |
953 | "\\(+[^/]*\\)?/") | |
954 | nil t) | |
955 | ;; We found it. Store away version number now that we | |
956 | ;; are anyhow so close to finding it. | |
957 | (vc-file-setprop file 'vc-workfile-version (match-string 1)) | |
274c59c9 KH |
958 | (vc-file-setprop file 'vc-checkout-time 0) |
959 | (throw 'found (cons (concat dirname "CVS/Entries") 'CVS))) | |
702220f3 | 960 | (t nil))) |
7064821c | 961 | (kill-buffer buffer))))) |
174edc13 | 962 | |
f2ee4191 RS |
963 | (defun vc-buffer-backend () |
964 | "Return the version-control type of the visited file, or nil if none." | |
965 | (if (eq vc-buffer-backend t) | |
e1c0c2d1 | 966 | (setq vc-buffer-backend (vc-backend (buffer-file-name))) |
f2ee4191 RS |
967 | vc-buffer-backend)) |
968 | ||
c844616c | 969 | (defun vc-toggle-read-only (&optional verbose) |
c43e436c RS |
970 | "Change read-only status of current buffer, perhaps via version control. |
971 | If the buffer is visiting a file registered with version control, | |
972 | then check the file in or out. Otherwise, just change the read-only flag | |
ec44193a KH |
973 | of the buffer. |
974 | With prefix argument, ask for version number to check in or check out. | |
975 | Check-out of a specified version number does not lock the file; | |
976 | to do that, use this command a second time with no argument." | |
c844616c | 977 | (interactive "P") |
702220f3 AS |
978 | (if (or (and (boundp 'vc-dired-mode) vc-dired-mode) |
979 | ;; use boundp because vc.el might not be loaded | |
980 | (vc-backend (buffer-file-name))) | |
c844616c | 981 | (vc-next-action verbose) |
594722a8 | 982 | (toggle-read-only))) |
c43e436c | 983 | (define-key global-map "\C-x\C-q" 'vc-toggle-read-only) |
594722a8 | 984 | |
e66eac08 AS |
985 | (defun vc-after-save () |
986 | ;; Function to be called by basic-save-buffer (in files.el). | |
987 | ;; If the file in the current buffer is under version control, | |
988 | ;; not locked, and the checkout model for it is `implicit', | |
989 | ;; mark it "locked" and redisplay the mode line. | |
990 | (let ((file (buffer-file-name))) | |
8aa81ea8 | 991 | (and (vc-backend file) |
b23a2306 AS |
992 | (or (and (equal (vc-file-getprop file 'vc-checkout-time) |
993 | (nth 5 (file-attributes file))) | |
994 | ;; File has been saved in the same second in which | |
995 | ;; it was checked out. Clear the checkout-time | |
996 | ;; to avoid confusion. | |
997 | (vc-file-setprop file 'vc-checkout-time nil)) | |
998 | t) | |
e66eac08 AS |
999 | (not (vc-locking-user file)) |
1000 | (eq (vc-checkout-model file) 'implicit) | |
2a11c6f3 | 1001 | (vc-file-setprop file 'vc-locking-user (vc-user-login-name)) |
b23a2306 AS |
1002 | (or (and (eq (vc-backend file) 'CVS) |
1003 | (vc-file-setprop file 'vc-cvs-status nil)) | |
1004 | t) | |
1005 | (vc-mode-line file)))) | |
04446ed0 | 1006 | |
594722a8 | 1007 | (defun vc-mode-line (file &optional label) |
7bc2b98b | 1008 | "Set `vc-mode' to display type of version control for FILE. |
594722a8 | 1009 | The value is set in the current buffer, which should be the buffer |
624c0e9d RS |
1010 | visiting FILE. Second optional arg LABEL is put in place of version |
1011 | control system name." | |
18c8a18e | 1012 | (interactive (list buffer-file-name nil)) |
7b0e1b8f | 1013 | (let ((vc-type (vc-backend file))) |
f2ee4191 | 1014 | (setq vc-mode |
7b0e1b8f KH |
1015 | (and vc-type |
1016 | (concat " " (or label (symbol-name vc-type)) | |
1017 | (and vc-display-status (vc-status file))))) | |
9becbeca RS |
1018 | ;; If the file is locked by some other user, make |
1019 | ;; the buffer read-only. Like this, even root | |
defccde3 | 1020 | ;; cannot modify a file that someone else has locked. |
7b0e1b8f KH |
1021 | (and vc-type |
1022 | (equal file (buffer-file-name)) | |
e66eac08 | 1023 | (vc-locking-user file) |
2a11c6f3 | 1024 | (not (string= (vc-user-login-name) (vc-locking-user file))) |
e66eac08 | 1025 | (setq buffer-read-only t)) |
defccde3 RS |
1026 | ;; If the user is root, and the file is not owner-writable, |
1027 | ;; then pretend that we can't write it | |
1028 | ;; even though we can (because root can write anything). | |
1029 | ;; This way, even root cannot modify a file that isn't locked. | |
9becbeca RS |
1030 | (and vc-type |
1031 | (equal file (buffer-file-name)) | |
1032 | (not buffer-read-only) | |
1033 | (zerop (user-real-uid)) | |
1034 | (zerop (logand (file-modes (buffer-file-name)) 128)) | |
1035 | (setq buffer-read-only t)) | |
f2ee4191 RS |
1036 | (force-mode-line-update) |
1037 | ;;(set-buffer-modified-p (buffer-modified-p)) ;;use this if Emacs 18 | |
1038 | vc-type)) | |
594722a8 | 1039 | |
e1c0c2d1 | 1040 | (defun vc-status (file) |
45c92c0c | 1041 | ;; Return string for placement in modeline by `vc-mode-line'. |
e1c0c2d1 | 1042 | ;; Format: |
624c0e9d | 1043 | ;; |
e1c0c2d1 KH |
1044 | ;; "-REV" if the revision is not locked |
1045 | ;; ":REV" if the revision is locked by the user | |
1046 | ;; ":LOCKER:REV" if the revision is locked by somebody else | |
1047 | ;; " @@" for a CVS file that is added, but not yet committed | |
174edc13 | 1048 | ;; |
e1c0c2d1 KH |
1049 | ;; In the CVS case, a "locked" working file is a |
1050 | ;; working file that is modified with respect to the master. | |
e66eac08 AS |
1051 | ;; The file is "locked" from the moment when the user saves |
1052 | ;; the modified buffer. | |
e1c0c2d1 KH |
1053 | ;; |
1054 | ;; This function assumes that the file is registered. | |
1055 | ||
1056 | (let ((locker (vc-locking-user file)) | |
1057 | (rev (vc-workfile-version file))) | |
1058 | (cond ((string= "0" rev) | |
1059 | " @@") | |
38179d42 RM |
1060 | ((not locker) |
1061 | (concat "-" rev)) | |
2a11c6f3 | 1062 | ((string= locker (vc-user-login-name)) |
e1c0c2d1 KH |
1063 | (concat ":" rev)) |
1064 | (t | |
1065 | (concat ":" locker ":" rev))))) | |
f2ee4191 | 1066 | |
a3a39848 AS |
1067 | (defun vc-follow-link () |
1068 | ;; If the current buffer visits a symbolic link, this function makes it | |
1069 | ;; visit the real file instead. If the real file is already visited in | |
1070 | ;; another buffer, make that buffer current, and kill the buffer | |
1071 | ;; that visits the link. | |
566f2169 | 1072 | (let* ((truename (abbreviate-file-name (file-chase-links buffer-file-name))) |
e7f5ddc2 RS |
1073 | (true-buffer (find-buffer-visiting truename)) |
1074 | (this-buffer (current-buffer))) | |
1075 | (if (eq true-buffer this-buffer) | |
1076 | (progn | |
d8221951 | 1077 | (kill-buffer this-buffer) |
e7f5ddc2 RS |
1078 | ;; In principle, we could do something like set-visited-file-name. |
1079 | ;; However, it can't be exactly the same as set-visited-file-name. | |
1080 | ;; I'm not going to work out the details right now. -- rms. | |
d8221951 | 1081 | (set-buffer (find-file-noselect truename))) |
e7f5ddc2 RS |
1082 | (set-buffer true-buffer) |
1083 | (kill-buffer this-buffer)))) | |
a3a39848 | 1084 | |
594722a8 ER |
1085 | ;;; install a call to the above as a find-file hook |
1086 | (defun vc-find-file-hook () | |
18c8a18e PE |
1087 | ;; Recompute whether file is version controlled, |
1088 | ;; if user has killed the buffer and revisited. | |
f2ee4191 | 1089 | (cond |
b499b50b | 1090 | ((and (not vc-ignore-vc-files) buffer-file-name) |
f2ee4191 RS |
1091 | (vc-file-clearprops buffer-file-name) |
1092 | (cond | |
e1c0c2d1 | 1093 | ((vc-backend buffer-file-name) |
f2ee4191 RS |
1094 | (vc-mode-line buffer-file-name) |
1095 | (cond ((not vc-make-backup-files) | |
1096 | ;; Use this variable, not make-backup-files, | |
1097 | ;; because this is for things that depend on the file name. | |
1098 | (make-local-variable 'backup-inhibited) | |
45fc7cc3 RS |
1099 | (setq backup-inhibited t)))) |
1100 | ((let* ((link (file-symlink-p buffer-file-name)) | |
227d2bed | 1101 | (link-type (and link (vc-backend (file-chase-links link))))) |
45fc7cc3 | 1102 | (if link-type |
b8063212 AS |
1103 | (cond ((eq vc-follow-symlinks nil) |
1104 | (message | |
1105 | "Warning: symbolic link to %s-controlled source file" link-type)) | |
566f2169 RS |
1106 | ((or (not (eq vc-follow-symlinks 'ask)) |
1107 | ;; If we already visited this file by following | |
1108 | ;; the link, don't ask again if we try to visit | |
1109 | ;; it again. GUD does that, and repeated questions | |
1110 | ;; are painful. | |
1111 | (get-file-buffer | |
1112 | (abbreviate-file-name (file-chase-links buffer-file-name)))) | |
1113 | ||
1114 | (vc-follow-link) | |
1115 | (message "Followed link to %s" buffer-file-name) | |
1116 | (vc-find-file-hook)) | |
1117 | (t | |
b8063212 AS |
1118 | (if (yes-or-no-p (format |
1119 | "Symbolic link to %s-controlled source file; follow link? " link-type)) | |
a3a39848 | 1120 | (progn (vc-follow-link) |
b8063212 AS |
1121 | (message "Followed link to %s" buffer-file-name) |
1122 | (vc-find-file-hook)) | |
1123 | (message | |
1124 | "Warning: editing through the link bypasses version control") | |
566f2169 | 1125 | )))))))))) |
594722a8 | 1126 | |
6379911c | 1127 | (add-hook 'find-file-hooks 'vc-find-file-hook) |
594722a8 ER |
1128 | |
1129 | ;;; more hooks, this time for file-not-found | |
1130 | (defun vc-file-not-found-hook () | |
1131 | "When file is not found, try to check it out from RCS or SCCS. | |
1132 | Returns t if checkout was successful, nil otherwise." | |
5f42a1d4 RS |
1133 | ;; When a file does not exist, ignore cached info about it |
1134 | ;; from a previous visit. | |
1135 | (vc-file-clearprops buffer-file-name) | |
b499b50b DL |
1136 | (if (and (not vc-ignore-vc-files) |
1137 | (vc-backend buffer-file-name)) | |
624c0e9d | 1138 | (save-excursion |
594722a8 | 1139 | (require 'vc) |
02d383eb | 1140 | (setq default-directory (file-name-directory (buffer-file-name))) |
594722a8 ER |
1141 | (not (vc-error-occurred (vc-checkout buffer-file-name)))))) |
1142 | ||
6379911c | 1143 | (add-hook 'find-file-not-found-hooks 'vc-file-not-found-hook) |
594722a8 | 1144 | |
f2ee4191 RS |
1145 | ;; Discard info about a file when we kill its buffer. |
1146 | (defun vc-kill-buffer-hook () | |
1147 | (if (stringp (buffer-file-name)) | |
1148 | (progn | |
1149 | (vc-file-clearprops (buffer-file-name)) | |
1150 | (kill-local-variable 'vc-buffer-backend)))) | |
1151 | ||
1152 | ;;;(add-hook 'kill-buffer-hook 'vc-kill-buffer-hook) | |
1153 | ||
594722a8 | 1154 | ;;; Now arrange for bindings and autoloading of the main package. |
7bc2b98b ER |
1155 | ;;; Bindings for this have to go in the global map, as we'll often |
1156 | ;;; want to call them from random buffers. | |
594722a8 ER |
1157 | |
1158 | (setq vc-prefix-map (lookup-key global-map "\C-xv")) | |
1159 | (if (not (keymapp vc-prefix-map)) | |
1160 | (progn | |
1161 | (setq vc-prefix-map (make-sparse-keymap)) | |
1162 | (define-key global-map "\C-xv" vc-prefix-map) | |
1163 | (define-key vc-prefix-map "a" 'vc-update-change-log) | |
1164 | (define-key vc-prefix-map "c" 'vc-cancel-version) | |
18c8a18e | 1165 | (define-key vc-prefix-map "d" 'vc-directory) |
14aa11f4 | 1166 | (define-key vc-prefix-map "g" 'vc-annotate) |
594722a8 ER |
1167 | (define-key vc-prefix-map "h" 'vc-insert-headers) |
1168 | (define-key vc-prefix-map "i" 'vc-register) | |
1169 | (define-key vc-prefix-map "l" 'vc-print-log) | |
e27827dd | 1170 | (define-key vc-prefix-map "m" 'vc-merge) |
594722a8 ER |
1171 | (define-key vc-prefix-map "r" 'vc-retrieve-snapshot) |
1172 | (define-key vc-prefix-map "s" 'vc-create-snapshot) | |
1173 | (define-key vc-prefix-map "u" 'vc-revert-buffer) | |
1174 | (define-key vc-prefix-map "v" 'vc-next-action) | |
18c8a18e | 1175 | (define-key vc-prefix-map "=" 'vc-diff) |
624c0e9d RS |
1176 | (define-key vc-prefix-map "~" 'vc-version-other-window))) |
1177 | ||
b662fbb8 RM |
1178 | (if (not (boundp 'vc-menu-map)) |
1179 | ;; Don't do the menu bindings if menu-bar.el wasn't loaded to defvar | |
1180 | ;; vc-menu-map. | |
1181 | () | |
1182 | ;;(define-key vc-menu-map [show-files] | |
1183 | ;; '("Show Files under VC" . (vc-directory t))) | |
9bef02e1 RS |
1184 | (define-key vc-menu-map [vc-retrieve-snapshot] |
1185 | '("Retrieve Snapshot" . vc-retrieve-snapshot)) | |
1186 | (define-key vc-menu-map [vc-create-snapshot] | |
1187 | '("Create Snapshot" . vc-create-snapshot)) | |
b64ea387 | 1188 | (define-key vc-menu-map [vc-directory] '("VC Directory Listing" . vc-directory)) |
b662fbb8 | 1189 | (define-key vc-menu-map [separator1] '("----")) |
14aa11f4 | 1190 | (define-key vc-menu-map [vc-annotate] '("Annotate" . vc-annotate)) |
b662fbb8 RM |
1191 | (define-key vc-menu-map [vc-rename-file] '("Rename File" . vc-rename-file)) |
1192 | (define-key vc-menu-map [vc-version-other-window] | |
1193 | '("Show Other Version" . vc-version-other-window)) | |
1194 | (define-key vc-menu-map [vc-diff] '("Compare with Last Version" . vc-diff)) | |
1195 | (define-key vc-menu-map [vc-update-change-log] | |
1196 | '("Update ChangeLog" . vc-update-change-log)) | |
1197 | (define-key vc-menu-map [vc-print-log] '("Show History" . vc-print-log)) | |
1198 | (define-key vc-menu-map [separator2] '("----")) | |
1199 | (define-key vc-menu-map [undo] '("Undo Last Check-In" . vc-cancel-version)) | |
1200 | (define-key vc-menu-map [vc-revert-buffer] | |
1201 | '("Revert to Last Version" . vc-revert-buffer)) | |
1202 | (define-key vc-menu-map [vc-insert-header] | |
1203 | '("Insert Header" . vc-insert-headers)) | |
9314395d | 1204 | (define-key vc-menu-map [vc-next-action] '("Check In/Out" . vc-next-action)) |
738efc8e KH |
1205 | (define-key vc-menu-map [vc-register] '("Register" . vc-register))) |
1206 | ||
b64ea387 DL |
1207 | ;;; These are not correct and it's not currently clear how doing it |
1208 | ;;; better (with more complicated expressions) might slow things down | |
1209 | ;;; on older systems. | |
1210 | ||
1211 | ;;;(put 'vc-rename-file 'menu-enable 'vc-mode) | |
1212 | ;;;(put 'vc-annotate 'menu-enable '(eq (vc-buffer-backend) 'CVS)) | |
1213 | ;;;(put 'vc-version-other-window 'menu-enable 'vc-mode) | |
1214 | ;;;(put 'vc-diff 'menu-enable 'vc-mode) | |
1215 | ;;;(put 'vc-update-change-log 'menu-enable | |
1216 | ;;; '(eq (vc-buffer-backend) 'RCS)) | |
1217 | ;;;(put 'vc-print-log 'menu-enable 'vc-mode) | |
1218 | ;;;(put 'vc-cancel-version 'menu-enable 'vc-mode) | |
1219 | ;;;(put 'vc-revert-buffer 'menu-enable 'vc-mode) | |
1220 | ;;;(put 'vc-insert-headers 'menu-enable 'vc-mode) | |
1221 | ;;;(put 'vc-next-action 'menu-enable 'vc-mode) | |
1222 | ;;;(put 'vc-register 'menu-enable '(and buffer-file-name (not vc-mode))) | |
594722a8 | 1223 | |
594722a8 ER |
1224 | (provide 'vc-hooks) |
1225 | ||
1226 | ;;; vc-hooks.el ends here |