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d8aff077 GM |
1 | ;;; vc-rcs.el --- support for RCS version-control |
2 | ||
0d30b337 | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
d7a0267c | 4 | ;; 2001, 2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
d8aff077 GM |
5 | |
6 | ;; Author: FSF (see vc.el for full credits) | |
7 | ;; Maintainer: Andre Spiegel <spiegel@gnu.org> | |
8 | ||
fa63cb6d | 9 | ;; $Id$ |
d8aff077 GM |
10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
b4aa6026 | 15 | ;; the Free Software Foundation; either version 3, or (at your option) |
d8aff077 GM |
16 | ;; any later version. |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
086add15 LK |
25 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
26 | ;; Boston, MA 02110-1301, USA. | |
d8aff077 | 27 | |
e8af40ee PJ |
28 | ;;; Commentary: |
29 | ||
30 | ;; See vc.el | |
d8aff077 | 31 | |
0792fdb4 SM |
32 | ;; TODO: |
33 | ;; - remove call to vc-expand-dirs by implementing our own (which can just | |
34 | ;; list the RCS subdir instead). | |
35 | ||
d8aff077 GM |
36 | ;;; Code: |
37 | ||
8f98485f AS |
38 | ;;; |
39 | ;;; Customization options | |
40 | ;;; | |
41 | ||
0bc58756 | 42 | (eval-when-compile |
10489ed7 AS |
43 | (require 'cl) |
44 | (require 'vc)) | |
0bc58756 | 45 | |
d8aff077 GM |
46 | (defcustom vc-rcs-release nil |
47 | "*The release number of your RCS installation, as a string. | |
48 | If nil, VC itself computes this value when it is first needed." | |
49 | :type '(choice (const :tag "Auto" nil) | |
50 | (string :tag "Specified") | |
51 | (const :tag "Unknown" unknown)) | |
52 | :group 'vc) | |
53 | ||
54 | (defcustom vc-rcs-register-switches nil | |
33c1b7a1 DL |
55 | "*Extra switches for registering a file in RCS. |
56 | A string or list of strings. These are passed to the checkin program | |
57 | by \\[vc-rcs-register]." | |
d8aff077 GM |
58 | :type '(choice (const :tag "None" nil) |
59 | (string :tag "Argument String") | |
60 | (repeat :tag "Argument List" | |
61 | :value ("") | |
62 | string)) | |
33c1b7a1 | 63 | :version "21.1" |
d8aff077 GM |
64 | :group 'vc) |
65 | ||
10489ed7 AS |
66 | (defcustom vc-rcs-diff-switches nil |
67 | "*A string or list of strings specifying extra switches for rcsdiff under VC." | |
68 | :type '(choice (const :tag "None" nil) | |
69 | (string :tag "Argument String") | |
70 | (repeat :tag "Argument List" | |
71 | :value ("") | |
72 | string)) | |
73 | :version "21.1" | |
74 | :group 'vc) | |
75 | ||
d8aff077 GM |
76 | (defcustom vc-rcs-header (or (cdr (assoc 'RCS vc-header-alist)) '("\$Id\$")) |
77 | "*Header keywords to be inserted by `vc-insert-headers'." | |
f0e7c067 | 78 | :type '(repeat string) |
33c1b7a1 | 79 | :version "21.1" |
d8aff077 GM |
80 | :group 'vc) |
81 | ||
82 | (defcustom vc-rcsdiff-knows-brief nil | |
83 | "*Indicates whether rcsdiff understands the --brief option. | |
84 | The value is either `yes', `no', or nil. If it is nil, VC tries | |
85 | to use --brief and sets this variable to remember whether it worked." | |
86 | :type '(choice (const :tag "Work out" nil) (const yes) (const no)) | |
87 | :group 'vc) | |
88 | ||
89 | ;;;###autoload | |
90 | (defcustom vc-rcs-master-templates | |
91 | '("%sRCS/%s,v" "%s%s,v" "%sRCS/%s") | |
92 | "*Where to look for RCS master files. | |
93 | For a description of possible values, see `vc-check-master-templates'." | |
94 | :type '(choice (const :tag "Use standard RCS file names" | |
95 | '("%sRCS/%s,v" "%s%s,v" "%sRCS/%s")) | |
96 | (repeat :tag "User-specified" | |
97 | (choice string | |
98 | function))) | |
33c1b7a1 | 99 | :version "21.1" |
d8aff077 GM |
100 | :group 'vc) |
101 | ||
8f98485f | 102 | \f |
8cdd17b4 ER |
103 | ;;; Properties of the backend |
104 | ||
105 | (defun vc-rcs-revision-granularity () | |
106 | 'file) | |
107 | ||
8f98485f AS |
108 | ;;; |
109 | ;;; State-querying functions | |
110 | ;;; | |
111 | ||
736e0fd1 AS |
112 | ;;; The autoload cookie below places vc-rcs-registered directly into |
113 | ;;; loaddefs.el, so that vc-rcs.el does not need to be loaded for | |
114 | ;;; every file that is visited. The definition is repeated below | |
115 | ;;; so that Help and etags can find it. | |
116 | ||
117 | ;;;###autoload (defun vc-rcs-registered (f) (vc-default-registered 'RCS f)) | |
0d2c82c7 | 118 | (defun vc-rcs-registered (f) (vc-default-registered 'RCS f)) |
d8aff077 GM |
119 | |
120 | (defun vc-rcs-state (file) | |
121 | "Implementation of `vc-state' for RCS." | |
122 | (or (boundp 'vc-rcs-headers-result) | |
123 | (and vc-consult-headers | |
124 | (vc-rcs-consult-headers file))) | |
125 | (let ((state | |
ac3f4c6f | 126 | ;; vc-working-revision might not be known; in that case the |
d8aff077 GM |
127 | ;; property is nil. vc-rcs-fetch-master-state knows how to |
128 | ;; handle that. | |
33c1b7a1 DL |
129 | (vc-rcs-fetch-master-state file |
130 | (vc-file-getprop file | |
ac3f4c6f | 131 | 'vc-working-revision)))) |
ceaa9974 AS |
132 | (if (not (eq state 'up-to-date)) |
133 | state | |
ceaa9974 AS |
134 | (if (vc-workfile-unchanged-p file) |
135 | 'up-to-date | |
136 | (if (eq (vc-checkout-model file) 'locking) | |
137 | 'unlocked-changes | |
138 | 'edited))))) | |
d8aff077 GM |
139 | |
140 | (defun vc-rcs-state-heuristic (file) | |
141 | "State heuristic for RCS." | |
142 | (let (vc-rcs-headers-result) | |
143 | (if (and vc-consult-headers | |
33c1b7a1 | 144 | (setq vc-rcs-headers-result |
d8aff077 GM |
145 | (vc-rcs-consult-headers file)) |
146 | (eq vc-rcs-headers-result 'rev-and-lock)) | |
147 | (let ((state (vc-file-getprop file 'vc-state))) | |
148 | ;; If the headers say that the file is not locked, the | |
149 | ;; permissions can tell us whether locking is used for | |
150 | ;; the file or not. | |
151 | (if (and (eq state 'up-to-date) | |
152 | (not (vc-mistrust-permissions file))) | |
153 | (cond | |
154 | ((string-match ".rw..-..-." (nth 8 (file-attributes file))) | |
0db2c43c | 155 | (vc-file-setprop file 'vc-checkout-model 'implicit) |
f1180544 JB |
156 | (setq state |
157 | (if (vc-rcs-workfile-is-newer file) | |
158 | 'edited | |
0db2c43c | 159 | 'up-to-date))) |
d8aff077 GM |
160 | ((string-match ".r-..-..-." (nth 8 (file-attributes file))) |
161 | (vc-file-setprop file 'vc-checkout-model 'locking)))) | |
162 | state) | |
163 | (if (not (vc-mistrust-permissions file)) | |
b010f887 AS |
164 | (let* ((attributes (file-attributes file 'string)) |
165 | (owner-name (nth 2 attributes)) | |
d8aff077 GM |
166 | (permissions (nth 8 attributes))) |
167 | (cond ((string-match ".r-..-..-." permissions) | |
168 | (vc-file-setprop file 'vc-checkout-model 'locking) | |
169 | 'up-to-date) | |
170 | ((string-match ".rw..-..-." permissions) | |
0db2c43c AS |
171 | (if (eq (vc-checkout-model file) 'locking) |
172 | (if (file-ownership-preserved-p file) | |
173 | 'edited | |
b010f887 | 174 | owner-name) |
f1180544 | 175 | (if (vc-rcs-workfile-is-newer file) |
0db2c43c AS |
176 | 'edited |
177 | 'up-to-date))) | |
d8aff077 GM |
178 | (t |
179 | ;; Strange permissions. Fall through to | |
180 | ;; expensive state computation. | |
181 | (vc-rcs-state file)))) | |
182 | (vc-rcs-state file))))) | |
183 | ||
ac3f4c6f ER |
184 | (defun vc-rcs-working-revision (file) |
185 | "RCS-specific version of `vc-working-revision'." | |
d8aff077 GM |
186 | (or (and vc-consult-headers |
187 | (vc-rcs-consult-headers file) | |
ac3f4c6f | 188 | (vc-file-getprop file 'vc-working-revision)) |
d8aff077 GM |
189 | (progn |
190 | (vc-rcs-fetch-master-state file) | |
ac3f4c6f | 191 | (vc-file-getprop file 'vc-working-revision)))) |
d8aff077 | 192 | |
8f98485f AS |
193 | (defun vc-rcs-latest-on-branch-p (file &optional version) |
194 | "Return non-nil if workfile version of FILE is the latest on its branch. | |
195 | When VERSION is given, perform check for that version." | |
ac3f4c6f | 196 | (unless version (setq version (vc-working-revision file))) |
8f98485f AS |
197 | (with-temp-buffer |
198 | (string= version | |
7735770b | 199 | (if (vc-trunk-p version) |
8f98485f AS |
200 | (progn |
201 | ;; Compare VERSION to the head version number. | |
202 | (vc-insert-file (vc-name file) "^[0-9]") | |
203 | (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1)) | |
204 | ;; If we are not on the trunk, we need to examine the | |
205 | ;; whole current branch. | |
206 | (vc-insert-file (vc-name file) "^desc") | |
7735770b | 207 | (vc-rcs-find-most-recent-rev (vc-branch-part version)))))) |
8f98485f | 208 | |
d8aff077 GM |
209 | (defun vc-rcs-checkout-model (file) |
210 | "RCS-specific version of `vc-checkout-model'." | |
8915c220 AS |
211 | (let (result) |
212 | (when vc-consult-headers | |
213 | (vc-file-setprop file 'vc-checkout-model nil) | |
214 | (vc-rcs-consult-headers file) | |
215 | (setq result (vc-file-getprop file 'vc-checkout-model))) | |
216 | (or result | |
217 | (progn (vc-rcs-fetch-master-state file) | |
218 | (vc-file-getprop file 'vc-checkout-model))))) | |
d8aff077 | 219 | |
d8aff077 | 220 | (defun vc-rcs-workfile-unchanged-p (file) |
fa63cb6d | 221 | "RCS-specific implementation of `vc-workfile-unchanged-p'." |
d8aff077 GM |
222 | ;; Try to use rcsdiff --brief. If rcsdiff does not understand that, |
223 | ;; do a double take and remember the fact for the future | |
ac3f4c6f | 224 | (let* ((version (concat "-r" (vc-working-revision file))) |
d8aff077 GM |
225 | (status (if (eq vc-rcsdiff-knows-brief 'no) |
226 | (vc-do-command nil 1 "rcsdiff" file version) | |
227 | (vc-do-command nil 2 "rcsdiff" file "--brief" version)))) | |
228 | (if (eq status 2) | |
229 | (if (not vc-rcsdiff-knows-brief) | |
230 | (setq vc-rcsdiff-knows-brief 'no | |
231 | status (vc-do-command nil 1 "rcsdiff" file version)) | |
232 | (error "rcsdiff failed")) | |
233 | (if (not vc-rcsdiff-knows-brief) (setq vc-rcsdiff-knows-brief 'yes))) | |
234 | ;; The workfile is unchanged if rcsdiff found no differences. | |
235 | (zerop status))) | |
236 | ||
9d8f43bf SM |
237 | (defun vc-rcs-find-file-not-found-hook () |
238 | (if (yes-or-no-p | |
239 | (format "File %s was lost; check out from version control? " | |
240 | (file-name-nondirectory buffer-file-name))) | |
241 | (save-excursion | |
242 | (require 'vc) | |
243 | (let ((default-directory (file-name-directory buffer-file-name))) | |
244 | (not (vc-error-occurred (vc-checkout buffer-file-name))))))) | |
d8aff077 | 245 | \f |
8f98485f AS |
246 | ;;; |
247 | ;;; State-changing functions | |
248 | ;;; | |
d8aff077 | 249 | |
8cdd17b4 ER |
250 | (defun vc-rcs-create-repo () |
251 | "Create a new RCS repository." | |
252 | ;; RCS is totally file-oriented, so all we have to do is make the directory | |
253 | (make-directory "RCS")) | |
254 | ||
255 | (defun vc-rcs-register (files &optional rev comment) | |
256 | "Register FILES into the RCS version-control system. | |
257 | REV is the optional revision number for the files. COMMENT can be used | |
258 | to provide an initial description for each FILES. | |
d8aff077 GM |
259 | |
260 | `vc-register-switches' and `vc-rcs-register-switches' are passed to | |
261 | the RCS command (in that order). | |
262 | ||
263 | Automatically retrieve a read-only version of the file with keywords | |
264 | expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." | |
8cdd17b4 ER |
265 | (let ((subdir (expand-file-name "RCS" (file-name-directory file)))) |
266 | (dolist (file files) | |
d8aff077 GM |
267 | (and (not (file-exists-p subdir)) |
268 | (not (directory-files (file-name-directory file) | |
269 | nil ".*,v$" t)) | |
270 | (yes-or-no-p "Create RCS subdirectory? ") | |
271 | (make-directory subdir)) | |
272 | (apply 'vc-do-command nil 0 "ci" file | |
273 | ;; if available, use the secure registering option | |
274 | (and (vc-rcs-release-p "5.6.4") "-i") | |
275 | (concat (if vc-keep-workfiles "-u" "-r") rev) | |
276 | (and comment (concat "-t-" comment)) | |
3e6bab65 | 277 | (vc-switches 'RCS 'register)) |
d8aff077 GM |
278 | ;; parse output to find master file name and workfile version |
279 | (with-current-buffer "*vc*" | |
280 | (goto-char (point-min)) | |
281 | (let ((name (if (looking-at (concat "^\\(.*\\) <-- " | |
282 | (file-name-nondirectory file))) | |
283 | (match-string 1)))) | |
284 | (if (not name) | |
285 | ;; if we couldn't find the master name, | |
286 | ;; run vc-rcs-registered to get it | |
287 | ;; (will be stored into the vc-name property) | |
288 | (vc-rcs-registered file) | |
289 | (vc-file-setprop file 'vc-name | |
290 | (if (file-name-absolute-p name) | |
291 | name | |
33c1b7a1 DL |
292 | (expand-file-name |
293 | name | |
d8aff077 | 294 | (file-name-directory file)))))) |
ac3f4c6f | 295 | (vc-file-setprop file 'vc-working-revision |
33c1b7a1 | 296 | (if (re-search-forward |
d8aff077 GM |
297 | "^initial revision: \\([0-9.]+\\).*\n" |
298 | nil t) | |
8cdd17b4 | 299 | (match-string 1))))))) |
d8aff077 | 300 | |
8f98485f AS |
301 | (defun vc-rcs-responsible-p (file) |
302 | "Return non-nil if RCS thinks it would be responsible for registering FILE." | |
303 | ;; TODO: check for all the patterns in vc-rcs-master-templates | |
304 | (file-directory-p (expand-file-name "RCS" (file-name-directory file)))) | |
305 | ||
306 | (defun vc-rcs-receive-file (file rev) | |
307 | "Implementation of receive-file for RCS." | |
308 | (let ((checkout-model (vc-checkout-model file))) | |
309 | (vc-rcs-register file rev "") | |
310 | (when (eq checkout-model 'implicit) | |
311 | (vc-rcs-set-non-strict-locking file)) | |
312 | (vc-rcs-set-default-branch file (concat rev ".1")))) | |
313 | ||
0db2c43c AS |
314 | (defun vc-rcs-unregister (file) |
315 | "Unregister FILE from RCS. | |
316 | If this leaves the RCS subdirectory empty, ask the user | |
317 | whether to remove it." | |
318 | (let* ((master (vc-name file)) | |
7849e179 SM |
319 | (dir (file-name-directory master)) |
320 | (backup-info (find-backup-file-name master))) | |
321 | (if (not backup-info) | |
322 | (delete-file master) | |
323 | (rename-file master (car backup-info) 'ok-if-already-exists) | |
324 | (dolist (f (cdr backup-info)) (ignore-errors (delete-file f)))) | |
0db2c43c AS |
325 | (and (string= (file-name-nondirectory (directory-file-name dir)) "RCS") |
326 | ;; check whether RCS dir is empty, i.e. it does not | |
327 | ;; contain any files except "." and ".." | |
f1180544 | 328 | (not (directory-files dir nil |
0db2c43c AS |
329 | "^\\([^.]\\|\\.[^.]\\|\\.\\.[^.]\\).*")) |
330 | (yes-or-no-p (format "Directory %s is empty; remove it? " dir)) | |
331 | (delete-directory dir)))) | |
332 | ||
8cdd17b4 | 333 | (defun vc-rcs-checkin (files rev comment) |
8f98485f | 334 | "RCS-specific version of `vc-backend-checkin'." |
3e6bab65 | 335 | (let ((switches (vc-switches 'RCS 'checkin))) |
8cdd17b4 ER |
336 | ;; Now operate on the files |
337 | (dolist (file files) | |
ac3f4c6f | 338 | (let ((old-version (vc-working-revision file)) new-version |
8cdd17b4 ER |
339 | (default-branch (vc-file-getprop file 'vc-rcs-default-branch))) |
340 | ;; Force branch creation if an appropriate | |
341 | ;; default branch has been set. | |
342 | (and (not rev) | |
343 | default-branch | |
344 | (string-match (concat "^" (regexp-quote old-version) "\\.") | |
345 | default-branch) | |
346 | (setq rev default-branch) | |
347 | (setq switches (cons "-f" switches))) | |
348 | (if (and (not rev) old-version) | |
349 | (setq rev (vc-branch-part old-version))) | |
350 | (apply 'vc-do-command nil 0 "ci" (vc-name file) | |
351 | ;; if available, use the secure check-in option | |
352 | (and (vc-rcs-release-p "5.6.4") "-j") | |
353 | (concat (if vc-keep-workfiles "-u" "-r") rev) | |
354 | (concat "-m" comment) | |
355 | switches) | |
ac3f4c6f | 356 | (vc-file-setprop file 'vc-working-revision nil) |
8cdd17b4 ER |
357 | |
358 | ;; determine the new workfile version | |
359 | (set-buffer "*vc*") | |
360 | (goto-char (point-min)) | |
361 | (when (or (re-search-forward | |
362 | "new revision: \\([0-9.]+\\);" nil t) | |
363 | (re-search-forward | |
364 | "reverting to previous revision \\([0-9.]+\\)" nil t)) | |
365 | (setq new-version (match-string 1)) | |
ac3f4c6f | 366 | (vc-file-setprop file 'vc-working-revision new-version)) |
8cdd17b4 ER |
367 | |
368 | ;; if we got to a different branch, adjust the default | |
369 | ;; branch accordingly | |
370 | (cond | |
371 | ((and old-version new-version | |
372 | (not (string= (vc-branch-part old-version) | |
373 | (vc-branch-part new-version)))) | |
374 | (vc-rcs-set-default-branch file | |
375 | (if (vc-trunk-p new-version) nil | |
376 | (vc-branch-part new-version))) | |
377 | ;; If this is an old RCS release, we might have | |
378 | ;; to remove a remaining lock. | |
379 | (if (not (vc-rcs-release-p "5.6.2")) | |
380 | ;; exit status of 1 is also accepted. | |
381 | ;; It means that the lock was removed before. | |
382 | (vc-do-command nil 1 "rcs" (vc-name file) | |
383 | (concat "-u" old-version))))))))) | |
a7e98271 | 384 | |
ac3f4c6f | 385 | (defun vc-rcs-find-revision (file rev buffer) |
88388365 SM |
386 | (apply 'vc-do-command |
387 | buffer 0 "co" (vc-name file) | |
388 | "-q" ;; suppress diagnostic output | |
389 | (concat "-p" rev) | |
3e6bab65 | 390 | (vc-switches 'RCS 'checkout))) |
88388365 SM |
391 | |
392 | (defun vc-rcs-checkout (file &optional editable rev) | |
393 | "Retrieve a copy of a saved version of FILE." | |
394 | (let ((file-buffer (get-file-buffer file)) | |
d8aff077 | 395 | switches) |
88388365 | 396 | (message "Checking out %s..." file) |
d8aff077 GM |
397 | (save-excursion |
398 | ;; Change buffers to get local value of vc-checkout-switches. | |
399 | (if file-buffer (set-buffer file-buffer)) | |
3e6bab65 | 400 | (setq switches (vc-switches 'RCS 'checkout)) |
d8aff077 GM |
401 | ;; Save this buffer's default-directory |
402 | ;; and use save-excursion to make sure it is restored | |
403 | ;; in the same buffer it was saved in. | |
404 | (let ((default-directory default-directory)) | |
405 | (save-excursion | |
406 | ;; Adjust the default-directory so that the check-out creates | |
407 | ;; the file in the right place. | |
88388365 SM |
408 | (setq default-directory (file-name-directory file)) |
409 | (let (new-version) | |
410 | ;; if we should go to the head of the trunk, | |
411 | ;; clear the default branch first | |
412 | (and rev (string= rev "") | |
413 | (vc-rcs-set-default-branch file nil)) | |
414 | ;; now do the checkout | |
415 | (apply 'vc-do-command | |
416 | nil 0 "co" (vc-name file) | |
417 | ;; If locking is not strict, force to overwrite | |
418 | ;; the writable workfile. | |
419 | (if (eq (vc-checkout-model file) 'implicit) "-f") | |
420 | (if editable "-l") | |
a3294a80 AS |
421 | (if (stringp rev) |
422 | ;; a literal revision was specified | |
423 | (concat "-r" rev) | |
ac3f4c6f | 424 | (let ((workrev (vc-working-revision file))) |
a3294a80 | 425 | (if workrev |
f1180544 | 426 | (concat "-r" |
a3294a80 AS |
427 | (if (not rev) |
428 | ;; no revision specified: | |
429 | ;; use current workfile version | |
430 | workrev | |
431 | ;; REV is t ... | |
a207e923 | 432 | (if (not (vc-trunk-p workrev)) |
a3294a80 AS |
433 | ;; ... go to head of current branch |
434 | (vc-branch-part workrev) | |
435 | ;; ... go to head of trunk | |
436 | (vc-rcs-set-default-branch file | |
437 | nil) | |
438 | "")))))) | |
88388365 SM |
439 | switches) |
440 | ;; determine the new workfile version | |
441 | (with-current-buffer "*vc*" | |
442 | (setq new-version | |
443 | (vc-parse-buffer "^revision \\([0-9.]+\\).*\n" 1))) | |
ac3f4c6f | 444 | (vc-file-setprop file 'vc-working-revision new-version) |
88388365 SM |
445 | ;; if necessary, adjust the default branch |
446 | (and rev (not (string= rev "")) | |
3249f234 | 447 | (vc-rcs-set-default-branch |
88388365 SM |
448 | file |
449 | (if (vc-rcs-latest-on-branch-p file new-version) | |
450 | (if (vc-trunk-p new-version) nil | |
451 | (vc-branch-part new-version)) | |
452 | new-version))))) | |
453 | (message "Checking out %s...done" file))))) | |
d8aff077 | 454 | |
8cdd17b4 ER |
455 | (defun vc-rcs-rollback (files) |
456 | "Roll back, undoing the most recent checkins of FILES." | |
457 | (if (not files) | |
458 | (error "RCS backend doesn't support directory-level rollback.")) | |
459 | (dolist (file files) | |
ac3f4c6f | 460 | (let* ((discard (vc-working-revision file)) |
8cdd17b4 ER |
461 | (previous (if (vc-trunk-p discard) "" (vc-branch-part discard))) |
462 | (config (current-window-configuration)) | |
463 | (done nil)) | |
464 | (if (null (yes-or-no-p (format "Remove version %s from %s history? " | |
465 | discard file))) | |
466 | (error "Aborted")) | |
467 | (message "Removing revision %s from %s." discard file) | |
468 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-o" discard)) | |
469 | ;; Check out the most recent remaining version. If it | |
470 | ;; fails, because the whole branch got deleted, do a | |
471 | ;; double-take and check out the version where the branch | |
472 | ;; started. | |
473 | (while (not done) | |
474 | (condition-case err | |
475 | (progn | |
476 | (vc-do-command nil 0 "co" (vc-name file) "-f" | |
477 | (concat "-u" previous)) | |
478 | (setq done t)) | |
479 | (error (set-buffer "*vc*") | |
480 | (goto-char (point-min)) | |
481 | (if (search-forward "no side branches present for" nil t) | |
482 | (progn (setq previous (vc-branch-part previous)) | |
483 | (vc-rcs-set-default-branch file previous) | |
484 | ;; vc-do-command popped up a window with | |
485 | ;; the error message. Get rid of it, by | |
486 | ;; restoring the old window configuration. | |
487 | (set-window-configuration config)) | |
488 | ;; No, it was some other error: re-signal it. | |
489 | (signal (car err) (cdr err))))))))) | |
490 | ||
99739bbf | 491 | (defun vc-rcs-revert (file &optional contents-done) |
8f98485f AS |
492 | "Revert FILE to the version it was based on." |
493 | (vc-do-command nil 0 "co" (vc-name file) "-f" | |
f1180544 | 494 | (concat (if (eq (vc-state file) 'edited) "-u" "-r") |
ac3f4c6f | 495 | (vc-working-revision file)))) |
8f98485f | 496 | |
8f98485f AS |
497 | (defun vc-rcs-merge (file first-version &optional second-version) |
498 | "Merge changes into current working copy of FILE. | |
499 | The changes are between FIRST-VERSION and SECOND-VERSION." | |
500 | (vc-do-command nil 1 "rcsmerge" (vc-name file) | |
501 | "-kk" ; ignore keyword conflicts | |
502 | (concat "-r" first-version) | |
503 | (if second-version (concat "-r" second-version)))) | |
504 | ||
505 | (defun vc-rcs-steal-lock (file &optional rev) | |
506 | "Steal the lock on the current workfile for FILE and revision REV. | |
507 | Needs RCS 5.6.2 or later for -M." | |
7735770b | 508 | (vc-do-command nil 0 "rcs" (vc-name file) "-M" (concat "-u" rev)) |
f1180544 | 509 | ;; Do a real checkout after stealing the lock, so that we see |
7735770b AS |
510 | ;; expanded headers. |
511 | (vc-do-command nil 0 "co" (vc-name file) "-f" (concat "-l" rev))) | |
8f98485f AS |
512 | |
513 | ||
514 | \f | |
515 | ;;; | |
516 | ;;; History functions | |
517 | ;;; | |
518 | ||
8cdd17b4 | 519 | (defun vc-rcs-print-log (files &optional buffer) |
8f98485f | 520 | "Get change log associated with FILE." |
8cdd17b4 | 521 | (vc-do-command buffer 0 "rlog" (mapcar 'vc-name files))) |
8f98485f | 522 | |
8cdd17b4 ER |
523 | (defun vc-rcs-diff (files &optional oldvers newvers buffer) |
524 | "Get a difference report using RCS between two sets of files." | |
525 | (apply 'vc-do-command (or buffer "*vc-diff*") | |
526 | 1 ;; Always go synchronous, the repo is local | |
527 | "rcsdiff" (vc-expand-dirs files) | |
10489ed7 | 528 | (append (list "-q" |
8cdd17b4 | 529 | (and oldvers (concat "-r" oldvers)) |
10489ed7 | 530 | (and newvers (concat "-r" newvers))) |
3e6bab65 | 531 | (vc-switches 'RCS 'diff)))) |
8f98485f | 532 | |
8cdd17b4 ER |
533 | (defun vc-rcs-wash-log () |
534 | "Remove all non-comment information from log output." | |
535 | (let ((separator (concat "^-+\nrevision [0-9.]+\ndate: .*\n" | |
536 | "\\(branches: .*;\n\\)?" | |
537 | "\\(\\*\\*\\* empty log message \\*\\*\\*\n\\)?"))) | |
538 | (goto-char (point-max)) (forward-line -1) | |
539 | (while (looking-at "=*\n") | |
540 | (delete-char (- (match-end 0) (match-beginning 0))) | |
541 | (forward-line -1)) | |
542 | (goto-char (point-min)) | |
543 | (if (looking-at "[\b\t\n\v\f\r ]+") | |
544 | (delete-char (- (match-end 0) (match-beginning 0)))) | |
545 | (goto-char (point-min)) | |
546 | (re-search-forward separator nil t) | |
547 | (delete-region (point-min) (point)) | |
548 | (while (re-search-forward separator nil t) | |
549 | (delete-region (match-beginning 0) (match-end 0))))) | |
550 | ||
3249f234 TTN |
551 | (defun vc-rcs-annotate-command (file buffer &optional revision) |
552 | "Annotate FILE, inserting the results in BUFFER. | |
553 | Optional arg REVISION is a revision to annotate from." | |
903d71fb | 554 | (vc-setup-buffer buffer) |
3249f234 TTN |
555 | ;; Aside from the "head revision on the trunk", the instructions for |
556 | ;; each revision on the trunk are an ordered list of kill and insert | |
557 | ;; commands necessary to go from the chronologically-following | |
558 | ;; revision to this one. That is, associated with revision N are | |
559 | ;; edits that applied to revision N+1 would result in revision N. | |
560 | ;; | |
561 | ;; On a branch, however, (some) things are inverted: the commands | |
562 | ;; listed are those necessary to go from the chronologically-preceding | |
563 | ;; revision to this one. That is, associated with revision N are | |
564 | ;; edits that applied to revision N-1 would result in revision N. | |
565 | ;; | |
566 | ;; So, to get per-line history info, we apply reverse-chronological | |
567 | ;; edits, starting with the head revision on the trunk, all the way | |
568 | ;; back through the initial revision (typically "1.1" or similar), | |
569 | ;; then apply forward-chronological edits -- keeping track of which | |
570 | ;; revision is associated with each inserted line -- until we reach | |
571 | ;; the desired revision for display (which may be either on the trunk | |
572 | ;; or on a branch). | |
573 | (let* ((tree (with-temp-buffer | |
574 | (insert-file-contents (vc-rcs-registered file)) | |
575 | (vc-rcs-parse))) | |
576 | (revisions (cdr (assq 'revisions tree))) | |
577 | ;; The revision N whose instructions we currently are processing. | |
578 | (cur (cdr (assq 'head (cdr (assq 'headers tree))))) | |
579 | ;; Alist from the parse tree for N. | |
580 | (meta (cdr (assoc cur revisions))) | |
581 | ;; Point and temporary string, respectively. | |
582 | p s | |
583 | ;; "Next-branch list". Nil means the desired revision to | |
584 | ;; display lives on the trunk. Non-nil means it lives on a | |
585 | ;; branch, in which case the value is a list of revision pairs | |
586 | ;; (PARENT . CHILD), the first PARENT being on the trunk, that | |
587 | ;; links each series of revisions in the path from the initial | |
588 | ;; revision to the desired revision to display. | |
589 | nbls | |
590 | ;; "Path-accumulate-predicate plus revision/date/author". | |
591 | ;; Until set, forward-chronological edits are not accumulated. | |
592 | ;; Once set, its value (updated every revision) is used for | |
593 | ;; the text property `:vc-rcs-r/d/a' for inserts during | |
594 | ;; processing of forward-chronological instructions for N. | |
595 | ;; See internal func `r/d/a'. | |
596 | prda | |
597 | ;; List of forward-chronological instructions, each of the | |
598 | ;; form: (POS . ACTION), where POS is a buffer position. If | |
599 | ;; ACTION is a string, it is inserted, otherwise it is taken as | |
600 | ;; the number of characters to be deleted. | |
601 | path | |
602 | ;; N+1. When `cur' is "", this is the initial revision. | |
603 | pre) | |
604 | (unless revision | |
605 | (setq revision cur)) | |
606 | (unless (assoc revision revisions) | |
607 | (error "No such revision: %s" revision)) | |
608 | ;; Find which branches (if any) must be included in the edits. | |
609 | (let ((par revision) | |
610 | bpt kids) | |
611 | (while (setq bpt (vc-branch-part par) | |
612 | par (vc-branch-part bpt)) | |
613 | (setq kids (cdr (assq 'branches (cdr (assoc par revisions))))) | |
614 | ;; A branchpoint may have multiple children. Find the right one. | |
615 | (while (not (string= bpt (vc-branch-part (car kids)))) | |
616 | (setq kids (cdr kids))) | |
617 | (push (cons par (car kids)) nbls))) | |
618 | ;; Start with the full text. | |
619 | (set-buffer buffer) | |
620 | (insert (cdr (assq 'text meta))) | |
621 | ;; Apply reverse-chronological edits on the trunk, computing and | |
622 | ;; accumulating forward-chronological edits after some point, for | |
623 | ;; later. | |
624 | (flet ((r/d/a () (vector pre | |
625 | (cdr (assq 'date meta)) | |
626 | (cdr (assq 'author meta))))) | |
627 | (while (when (setq pre cur cur (cdr (assq 'next meta))) | |
628 | (not (string= "" cur))) | |
629 | (setq | |
630 | ;; Start accumulating the forward-chronological edits when N+1 | |
631 | ;; on the trunk is either the desired revision to display, or | |
632 | ;; the appropriate branchpoint for it. Do this before | |
633 | ;; updating `meta' since `r/d/a' uses N+1's `meta' value. | |
634 | prda (when (or prda (string= (if nbls (caar nbls) revision) pre)) | |
635 | (r/d/a)) | |
636 | meta (cdr (assoc cur revisions))) | |
637 | ;; Edits in the parse tree specify a line number (in the buffer | |
638 | ;; *BEFORE* editing occurs) to start from, but line numbers | |
639 | ;; change as a result of edits. To DTRT, we apply edits in | |
640 | ;; order of descending buffer position so that edits further | |
641 | ;; down in the buffer occur first w/o corrupting specified | |
642 | ;; buffer positions of edits occurring towards the beginning of | |
643 | ;; the buffer. In this way we avoid using markers. A pleasant | |
644 | ;; property of this approach is ability to push instructions | |
645 | ;; onto `path' directly, w/o need to maintain rev boundaries. | |
646 | (dolist (insn (cdr (assq :insn meta))) | |
647 | (goto-line (pop insn)) | |
648 | (setq p (point)) | |
649 | (case (pop insn) | |
650 | (k (setq s (buffer-substring-no-properties | |
651 | p (progn (forward-line (car insn)) | |
652 | (point)))) | |
653 | (when prda | |
654 | (push `(,p . ,(propertize s :vc-rcs-r/d/a prda)) path)) | |
655 | (delete-region p (point))) | |
656 | (i (setq s (car insn)) | |
657 | (when prda | |
658 | (push `(,p . ,(length s)) path)) | |
659 | (insert s))))) | |
660 | ;; For the initial revision, setting `:vc-rcs-r/d/a' directly is | |
661 | ;; equivalent to pushing an insert instruction (of the entire buffer | |
662 | ;; contents) onto `path' then erasing the buffer, but less wasteful. | |
663 | (put-text-property (point-min) (point-max) :vc-rcs-r/d/a (r/d/a)) | |
664 | ;; Now apply the forward-chronological edits for the trunk. | |
665 | (dolist (insn path) | |
666 | (goto-char (pop insn)) | |
667 | (if (stringp insn) | |
668 | (insert insn) | |
669 | (delete-char insn))) | |
670 | ;; Now apply the forward-chronological edits (directly from the | |
671 | ;; parse-tree) for the branch(es), if necessary. We re-use vars | |
672 | ;; `pre' and `meta' for the sake of internal func `r/d/a'. | |
673 | (while nbls | |
674 | (setq pre (cdr (pop nbls))) | |
675 | (while (progn | |
676 | (setq meta (cdr (assoc pre revisions)) | |
677 | prda nil) | |
678 | (dolist (insn (cdr (assq :insn meta))) | |
679 | (goto-line (pop insn)) | |
680 | (case (pop insn) | |
681 | (k (delete-region | |
682 | (point) (progn (forward-line (car insn)) | |
683 | (point)))) | |
684 | (i (insert (propertize | |
685 | (car insn) | |
686 | :vc-rcs-r/d/a | |
687 | (or prda (setq prda (r/d/a)))))))) | |
688 | (prog1 (not (string= (if nbls (caar nbls) revision) pre)) | |
689 | (setq pre (cdr (assq 'next meta))))))))) | |
690 | ;; Lastly, for each line, insert at bol nicely-formatted history info. | |
691 | ;; We do two passes to collect summary information used to minimize | |
692 | ;; the annotation's usage of screen real-estate: (1) Consider rendered | |
693 | ;; width of revision plus author together as a unit; and (2) Omit | |
694 | ;; author entirely if all authors are the same as the user. | |
695 | (let ((ht (make-hash-table :test 'eq)) | |
696 | (me (user-login-name)) | |
697 | (maxw 0) | |
698 | (all-me t) | |
699 | rda w a) | |
700 | (goto-char (point-max)) | |
701 | (while (not (bobp)) | |
702 | (forward-line -1) | |
703 | (setq rda (get-text-property (point) :vc-rcs-r/d/a)) | |
704 | (unless (gethash rda ht) | |
705 | (setq a (aref rda 2) | |
706 | all-me (and all-me (string= a me))) | |
707 | (puthash rda (setq w (+ (length (aref rda 0)) | |
708 | (length a))) | |
709 | ht) | |
710 | (setq maxw (max w maxw)))) | |
711 | (let ((padding (make-string maxw 32))) | |
712 | (flet ((pad (w) (substring-no-properties padding w)) | |
713 | (render (rda &rest ls) | |
714 | (propertize | |
715 | (apply 'concat | |
716 | (format-time-string "%Y-%m-%d" (aref rda 1)) | |
717 | " " | |
718 | (aref rda 0) | |
719 | ls) | |
df2e19c2 | 720 | :vc-annotate-prefix t |
3249f234 TTN |
721 | :vc-rcs-r/d/a rda))) |
722 | (maphash | |
723 | (if all-me | |
724 | (lambda (rda w) | |
725 | (puthash rda (render rda (pad w) ": ") ht)) | |
726 | (lambda (rda w) | |
727 | (puthash rda (render rda " " (pad w) " " (aref rda 2) ": ") ht))) | |
728 | ht))) | |
729 | (while (not (eobp)) | |
730 | (insert (gethash (get-text-property (point) :vc-rcs-r/d/a) ht)) | |
731 | (forward-line 1)))) | |
732 | ||
733 | (defun vc-rcs-annotate-current-time () | |
734 | "Return the current time, based at midnight of the current day, and | |
735 | encoded as fractional days." | |
736 | (vc-annotate-convert-time | |
737 | (apply 'encode-time 0 0 0 (nthcdr 3 (decode-time (current-time)))))) | |
738 | ||
739 | (defun vc-rcs-annotate-time () | |
740 | "Return the time of the next annotation (as fraction of days) | |
741 | systime, or nil if there is none. Also, reposition point." | |
742 | (unless (eobp) | |
53cc5b9c TTN |
743 | (prog1 (vc-annotate-convert-time |
744 | (aref (get-text-property (point) :vc-rcs-r/d/a) 1)) | |
745 | (goto-char (next-single-property-change (point) :vc-annotate-prefix))))) | |
3249f234 TTN |
746 | |
747 | (defun vc-rcs-annotate-extract-revision-at-line () | |
748 | (aref (get-text-property (point) :vc-rcs-r/d/a) 0)) | |
749 | ||
8f98485f AS |
750 | \f |
751 | ;;; | |
752 | ;;; Snapshot system | |
753 | ;;; | |
754 | ||
755 | (defun vc-rcs-assign-name (file name) | |
756 | "Assign to FILE's latest version a given NAME." | |
757 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-n" name ":"))) | |
758 | ||
759 | \f | |
760 | ;;; | |
761 | ;;; Miscellaneous | |
762 | ;;; | |
763 | ||
764 | (defun vc-rcs-check-headers () | |
765 | "Check if the current file has any headers in it." | |
766 | (save-excursion | |
767 | (goto-char (point-min)) | |
768 | (re-search-forward "\\$[A-Za-z\300-\326\330-\366\370-\377]+\ | |
769 | \\(: [\t -#%-\176\240-\377]*\\)?\\$" nil t))) | |
770 | ||
771 | (defun vc-rcs-clear-headers () | |
772 | "Implementation of vc-clear-headers for RCS." | |
773 | (let ((case-fold-search nil)) | |
774 | (goto-char (point-min)) | |
775 | (while (re-search-forward | |
776 | (concat "\\$\\(Author\\|Date\\|Header\\|Id\\|Locker\\|Name\\|" | |
777 | "RCSfile\\|Revision\\|Source\\|State\\): [^$\n]+\\$") | |
778 | nil t) | |
779 | (replace-match "$\\1$")))) | |
780 | ||
781 | (defun vc-rcs-rename-file (old new) | |
782 | ;; Just move the master file (using vc-rcs-master-templates). | |
783 | (vc-rename-master (vc-name old) new vc-rcs-master-templates)) | |
784 | ||
785 | \f | |
786 | ;;; | |
787 | ;;; Internal functions | |
788 | ;;; | |
789 | ||
8f98485f AS |
790 | (defun vc-rcs-workfile-is-newer (file) |
791 | "Return non-nil if FILE is newer than its RCS master. | |
792 | This likely means that FILE has been changed with respect | |
793 | to its master version." | |
794 | (let ((file-time (nth 5 (file-attributes file))) | |
795 | (master-time (nth 5 (file-attributes (vc-name file))))) | |
796 | (or (> (nth 0 file-time) (nth 0 master-time)) | |
797 | (and (= (nth 0 file-time) (nth 0 master-time)) | |
798 | (> (nth 1 file-time) (nth 1 master-time)))))) | |
799 | ||
800 | (defun vc-rcs-find-most-recent-rev (branch) | |
801 | "Find most recent revision on BRANCH." | |
802 | (goto-char (point-min)) | |
803 | (let ((latest-rev -1) value) | |
804 | (while (re-search-forward (concat "^\\(" (regexp-quote branch) | |
805 | "\\.\\([0-9]+\\)\\)\ndate[ \t]+[0-9.]+;") | |
806 | nil t) | |
807 | (let ((rev (string-to-number (match-string 2)))) | |
808 | (when (< latest-rev rev) | |
809 | (setq latest-rev rev) | |
810 | (setq value (match-string 1))))) | |
811 | (or value | |
7735770b | 812 | (vc-branch-part branch)))) |
8f98485f | 813 | |
ac3f4c6f | 814 | (defun vc-rcs-fetch-master-state (file &optional working-revision) |
8f98485f AS |
815 | "Compute the master file's idea of the state of FILE. |
816 | If a WORKFILE-VERSION is given, compute the state of that version, | |
817 | otherwise determine the workfile version based on the master file. | |
ac3f4c6f | 818 | This function sets the properties `vc-working-revision' and |
8f98485f AS |
819 | `vc-checkout-model' to their correct values, based on the master |
820 | file." | |
821 | (with-temp-buffer | |
ea28aa35 AS |
822 | (if (or (not (vc-insert-file (vc-name file) "^[0-9]")) |
823 | (progn (goto-char (point-min)) | |
824 | (not (looking-at "^head[ \t\n]+[^;]+;$")))) | |
825 | (error "File %s is not an RCS master file" (vc-name file))) | |
8f98485f AS |
826 | (let ((workfile-is-latest nil) |
827 | (default-branch (vc-parse-buffer "^branch[ \t\n]+\\([^;]*\\);" 1))) | |
828 | (vc-file-setprop file 'vc-rcs-default-branch default-branch) | |
ac3f4c6f | 829 | (unless working-revision |
8f98485f AS |
830 | ;; Workfile version not known yet. Determine that first. It |
831 | ;; is either the head of the trunk, the head of the default | |
832 | ;; branch, or the "default branch" itself, if that is a full | |
833 | ;; revision number. | |
834 | (cond | |
835 | ;; no default branch | |
836 | ((or (not default-branch) (string= "" default-branch)) | |
ac3f4c6f | 837 | (setq working-revision |
8f98485f AS |
838 | (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1)) |
839 | (setq workfile-is-latest t)) | |
840 | ;; default branch is actually a revision | |
841 | ((string-match "^[0-9]+\\.[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*$" | |
842 | default-branch) | |
ac3f4c6f | 843 | (setq working-revision default-branch)) |
8f98485f AS |
844 | ;; else, search for the head of the default branch |
845 | (t (vc-insert-file (vc-name file) "^desc") | |
ac3f4c6f | 846 | (setq working-revision |
8f98485f AS |
847 | (vc-rcs-find-most-recent-rev default-branch)) |
848 | (setq workfile-is-latest t))) | |
ac3f4c6f | 849 | (vc-file-setprop file 'vc-working-revision working-revision)) |
8f98485f AS |
850 | ;; Check strict locking |
851 | (goto-char (point-min)) | |
852 | (vc-file-setprop file 'vc-checkout-model | |
853 | (if (re-search-forward ";[ \t\n]*strict;" nil t) | |
854 | 'locking 'implicit)) | |
855 | ;; Compute state of workfile version | |
856 | (goto-char (point-min)) | |
857 | (let ((locking-user | |
858 | (vc-parse-buffer (concat "^locks[ \t\n]+[^;]*[ \t\n]+\\([^:]+\\):" | |
ac3f4c6f | 859 | (regexp-quote working-revision) |
8f98485f AS |
860 | "[^0-9.]") |
861 | 1))) | |
862 | (cond | |
863 | ;; not locked | |
864 | ((not locking-user) | |
865 | (if (or workfile-is-latest | |
ac3f4c6f | 866 | (vc-rcs-latest-on-branch-p file working-revision)) |
8f98485f | 867 | ;; workfile version is latest on branch |
036f45fa | 868 | 'up-to-date |
8f98485f AS |
869 | ;; workfile version is not latest on branch |
870 | 'needs-patch)) | |
871 | ;; locked by the calling user | |
872 | ((and (stringp locking-user) | |
4f147528 | 873 | (string= locking-user (vc-user-login-name file))) |
8f98485f AS |
874 | (if (or (eq (vc-checkout-model file) 'locking) |
875 | workfile-is-latest | |
ac3f4c6f | 876 | (vc-rcs-latest-on-branch-p file working-revision)) |
8f98485f AS |
877 | 'edited |
878 | ;; Locking is not used for the file, but the owner does | |
879 | ;; have a lock, and there is a higher version on the current | |
880 | ;; branch. Not sure if this can occur, and if it is right | |
881 | ;; to use `needs-merge' in this case. | |
882 | 'needs-merge)) | |
883 | ;; locked by somebody else | |
884 | ((stringp locking-user) | |
885 | locking-user) | |
886 | (t | |
887 | (error "Error getting state of RCS file"))))))) | |
888 | ||
889 | (defun vc-rcs-consult-headers (file) | |
890 | "Search for RCS headers in FILE, and set properties accordingly. | |
891 | ||
892 | Returns: nil if no headers were found | |
893 | 'rev if a workfile revision was found | |
894 | 'rev-and-lock if revision and lock info was found" | |
895 | (cond | |
896 | ((not (get-file-buffer file)) nil) | |
897 | ((let (status version locking-user) | |
898 | (save-excursion | |
899 | (set-buffer (get-file-buffer file)) | |
900 | (goto-char (point-min)) | |
901 | (cond | |
902 | ;; search for $Id or $Header | |
903 | ;; ------------------------- | |
904 | ;; The `\ 's below avoid an RCS 5.7 bug when checking in this file. | |
905 | ((or (and (search-forward "$Id\ : " nil t) | |
906 | (looking-at "[^ ]+ \\([0-9.]+\\) ")) | |
907 | (and (progn (goto-char (point-min)) | |
908 | (search-forward "$Header\ : " nil t)) | |
909 | (looking-at "[^ ]+ \\([0-9.]+\\) "))) | |
910 | (goto-char (match-end 0)) | |
911 | ;; if found, store the revision number ... | |
912 | (setq version (match-string-no-properties 1)) | |
913 | ;; ... and check for the locking state | |
914 | (cond | |
915 | ((looking-at | |
916 | (concat "[0-9]+[/-][01][0-9][/-][0-3][0-9] " ; date | |
917 | "[0-2][0-9]:[0-5][0-9]+:[0-6][0-9]+\\([+-][0-9:]+\\)? " ; time | |
918 | "[^ ]+ [^ ]+ ")) ; author & state | |
919 | (goto-char (match-end 0)) ; [0-6] in regexp handles leap seconds | |
920 | (cond | |
921 | ;; unlocked revision | |
922 | ((looking-at "\\$") | |
923 | (setq locking-user 'none) | |
924 | (setq status 'rev-and-lock)) | |
925 | ;; revision is locked by some user | |
926 | ((looking-at "\\([^ ]+\\) \\$") | |
927 | (setq locking-user (match-string-no-properties 1)) | |
928 | (setq status 'rev-and-lock)) | |
929 | ;; everything else: false | |
930 | (nil))) | |
931 | ;; unexpected information in | |
932 | ;; keyword string --> quit | |
933 | (nil))) | |
934 | ;; search for $Revision | |
935 | ;; -------------------- | |
936 | ((re-search-forward (concat "\\$" | |
937 | "Revision: \\([0-9.]+\\) \\$") | |
938 | nil t) | |
939 | ;; if found, store the revision number ... | |
940 | (setq version (match-string-no-properties 1)) | |
941 | ;; and see if there's any lock information | |
942 | (goto-char (point-min)) | |
943 | (if (re-search-forward (concat "\\$" "Locker:") nil t) | |
944 | (cond ((looking-at " \\([^ ]+\\) \\$") | |
945 | (setq locking-user (match-string-no-properties 1)) | |
946 | (setq status 'rev-and-lock)) | |
947 | ((looking-at " *\\$") | |
948 | (setq locking-user 'none) | |
949 | (setq status 'rev-and-lock)) | |
950 | (t | |
951 | (setq locking-user 'none) | |
952 | (setq status 'rev-and-lock))) | |
953 | (setq status 'rev))) | |
954 | ;; else: nothing found | |
955 | ;; ------------------- | |
956 | (t nil))) | |
ac3f4c6f | 957 | (if status (vc-file-setprop file 'vc-working-revision version)) |
8f98485f AS |
958 | (and (eq status 'rev-and-lock) |
959 | (vc-file-setprop file 'vc-state | |
960 | (cond | |
961 | ((eq locking-user 'none) 'up-to-date) | |
53cc5b9c | 962 | ((string= locking-user (vc-user-login-name file)) |
4f147528 | 963 | 'edited) |
8f98485f AS |
964 | (t locking-user))) |
965 | ;; If the file has headers, we don't want to query the | |
966 | ;; master file, because that would eliminate all the | |
967 | ;; performance gain the headers brought us. We therefore | |
968 | ;; use a heuristic now to find out whether locking is used | |
969 | ;; for this file. If we trust the file permissions, and the | |
970 | ;; file is not locked, then if the file is read-only we | |
971 | ;; assume that locking is used for the file, otherwise | |
972 | ;; locking is not used. | |
973 | (not (vc-mistrust-permissions file)) | |
974 | (vc-up-to-date-p file) | |
975 | (if (string-match ".r-..-..-." (nth 8 (file-attributes file))) | |
976 | (vc-file-setprop file 'vc-checkout-model 'locking) | |
977 | (vc-file-setprop file 'vc-checkout-model 'implicit))) | |
978 | status)))) | |
979 | ||
980 | (defun vc-release-greater-or-equal (r1 r2) | |
981 | "Compare release numbers, represented as strings. | |
982 | Release components are assumed cardinal numbers, not decimal fractions | |
983 | \(5.10 is a higher release than 5.9\). Omitted fields are considered | |
984 | lower \(5.6.7 is earlier than 5.6.7.1\). Comparison runs till the end | |
985 | of the string is found, or a non-numeric component shows up \(5.6.7 is | |
986 | earlier than \"5.6.7 beta\", which is probably not what you want in | |
987 | some cases\). This code is suitable for existing RCS release numbers. | |
988 | CVS releases are handled reasonably, too \(1.3 < 1.4* < 1.5\)." | |
989 | (let (v1 v2 i1 i2) | |
990 | (catch 'done | |
991 | (or (and (string-match "^\\.?\\([0-9]+\\)" r1) | |
992 | (setq i1 (match-end 0)) | |
993 | (setq v1 (string-to-number (match-string 1 r1))) | |
994 | (or (and (string-match "^\\.?\\([0-9]+\\)" r2) | |
995 | (setq i2 (match-end 0)) | |
996 | (setq v2 (string-to-number (match-string 1 r2))) | |
997 | (if (> v1 v2) (throw 'done t) | |
998 | (if (< v1 v2) (throw 'done nil) | |
999 | (throw 'done | |
1000 | (vc-release-greater-or-equal | |
1001 | (substring r1 i1) | |
1002 | (substring r2 i2))))))) | |
1003 | (throw 'done t))) | |
1004 | (or (and (string-match "^\\.?\\([0-9]+\\)" r2) | |
1005 | (throw 'done nil)) | |
1006 | (throw 'done t))))) | |
1007 | ||
1008 | (defun vc-rcs-release-p (release) | |
1009 | "Return t if we have RELEASE or better." | |
1010 | (let ((installation (vc-rcs-system-release))) | |
1011 | (if (and installation | |
1012 | (not (eq installation 'unknown))) | |
1013 | (vc-release-greater-or-equal installation release)))) | |
1014 | ||
8f98485f AS |
1015 | (defun vc-rcs-system-release () |
1016 | "Return the RCS release installed on this system, as a string. | |
1017 | Return symbol UNKNOWN if the release cannot be deducted. The user can | |
1018 | override this using variable `vc-rcs-release'. | |
1019 | ||
1020 | If the user has not set variable `vc-rcs-release' and it is nil, | |
1021 | variable `vc-rcs-release' is set to the returned value." | |
1022 | (or vc-rcs-release | |
1023 | (setq vc-rcs-release | |
1024 | (or (and (zerop (vc-do-command nil nil "rcs" nil "-V")) | |
1025 | (with-current-buffer (get-buffer "*vc*") | |
1026 | (vc-parse-buffer "^RCS version \\([0-9.]+ *.*\\)" 1))) | |
1027 | 'unknown)))) | |
1028 | ||
1029 | (defun vc-rcs-set-non-strict-locking (file) | |
1030 | (vc-do-command nil 0 "rcs" file "-U") | |
1031 | (vc-file-setprop file 'vc-checkout-model 'implicit) | |
1032 | (set-file-modes file (logior (file-modes file) 128))) | |
1033 | ||
1034 | (defun vc-rcs-set-default-branch (file branch) | |
1035 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-b" branch)) | |
1036 | (vc-file-setprop file 'vc-rcs-default-branch branch)) | |
1037 | ||
3249f234 TTN |
1038 | (defun vc-rcs-parse (&optional buffer) |
1039 | "Parse current buffer, presumed to be in RCS-style masterfile format. | |
1040 | Optional arg BUFFER specifies another buffer to parse. Return an alist | |
1041 | of two elements, w/ keys `headers' and `revisions' and values in turn | |
1042 | sub-alists. For `headers', the values unless otherwise specified are | |
1043 | strings and the keys are: | |
1044 | ||
1045 | desc -- description | |
1046 | head -- latest revision | |
1047 | branch -- the branch the \"head revision\" lies on; | |
1048 | absent if the head revision lies on the trunk | |
1049 | access -- ??? | |
1050 | symbols -- sub-alist of (SYMBOL . REVISION) elements | |
1051 | locks -- if file is checked out, something like \"ttn:1.7\" | |
1052 | strict -- t if \"strict locking\" is in effect, otherwise nil | |
1053 | comment -- may be absent; typically something like \"# \" or \"; \" | |
1054 | expand -- may be absent; ??? | |
1055 | ||
1056 | For `revisions', the car is REVISION (string), the cdr a sub-alist, | |
1057 | with string values (unless otherwise specified) and keys: | |
1058 | ||
1059 | date -- a time value (like that returned by `encode-time'); as a | |
1060 | special case, a year value less than 100 is augmented by 1900 | |
1061 | author -- username | |
1062 | state -- typically \"Exp\" or \"Rel\" | |
1063 | branches -- list of revisions that begin branches from this revision | |
1064 | next -- on the trunk: the chronologically-preceding revision, or \"\"; | |
1065 | on a branch: the chronologically-following revision, or \"\" | |
1066 | log -- change log entry | |
1067 | text -- for the head revision on the trunk, the body of the file; | |
1068 | other revisions have `:insn' instead | |
1069 | :insn -- for non-head revisions, a list of parsed instructions | |
1070 | in one of two forms, in both cases START meaning \"first | |
1071 | go to line START\": | |
1072 | - `(START k COUNT)' -- kill COUNT lines | |
1073 | - `(START i TEXT)' -- insert TEXT (a string) | |
1074 | The list is in descending order by START. | |
1075 | ||
1076 | The `:insn' key is a keyword to distinguish it as a vc-rcs.el extension." | |
1077 | (setq buffer (get-buffer (or buffer (current-buffer)))) | |
1078 | (set-buffer buffer) | |
1079 | ;; An RCS masterfile can be viewed as containing four regular (for the | |
1080 | ;; most part) sections: (a) the "headers", (b) the "rev headers", (c) | |
1081 | ;; the "description" and (d) the "rev bodies", in that order. In the | |
1082 | ;; returned alist (see docstring), elements from (b) and (d) are | |
1083 | ;; combined pairwise to form the "revisions", while those from (a) and | |
1084 | ;; (c) are simply combined to form the "headers". | |
1085 | ;; | |
1086 | ;; Loosely speaking, each section contains a series of alternating | |
1087 | ;; "tags" and "printed representations". In the (b) and (d), many | |
1088 | ;; such series can appear, and a revision number on a line by itself | |
1089 | ;; precedes the series of tags and printed representations associated | |
1090 | ;; with it. | |
1091 | ;; | |
1092 | ;; In (a) and (b), the printed representations (with the exception of | |
1093 | ;; the `comment' tag in the headers) terminate with a semicolon, which | |
1094 | ;; is NOT part of the "value" finally associated with the tag. All | |
1095 | ;; other printed representations are in "@@-format"; there is an "@", | |
1096 | ;; the middle part (to be translated into the value), another "@" and | |
1097 | ;; a newline. Each "@@" in the middle part indicates the position of | |
1098 | ;; a single "@" (and consequently the requirement of an additional | |
1099 | ;; initial step when translating to the value). | |
1100 | ;; | |
1101 | ;; Parser state includes vars that collect parts of the return value... | |
1102 | (let ((desc nil) (headers nil) (revs nil) | |
1103 | ;; ... as well as vars that support a single-pass, tag-assisted, | |
1104 | ;; minimal-data-copying scan. Basically -- skirting around the | |
1105 | ;; grouping by revision required in (b) and (d) -- we repeatedly | |
1106 | ;; and context-sensitively read a tag (that MUST be present), | |
1107 | ;; determine the bounds of the printed representation, translate | |
1108 | ;; it into a value, and push the tag plus value onto one of the | |
1109 | ;; collection vars. Finally, we return the parse tree | |
1110 | ;; incorporating the values of the collection vars (see "rv"). | |
1111 | ;; | |
1112 | ;; A symbol or string to keep track of context (for error messages). | |
1113 | context | |
1114 | ;; A symbol, the current tag. | |
1115 | tok | |
1116 | ;; Region (begin and end buffer positions) of the printed | |
1117 | ;; representation for the current tag. | |
1118 | b e | |
1119 | ;; A list of buffer positions where "@@" can be found within the | |
1120 | ;; printed representation region. For each location, we push two | |
1121 | ;; elements onto the list, 1+ and 2+ the location, respectively, | |
1122 | ;; with the 2+ appearing at the head. In this way, the expression | |
1123 | ;; `(,e ,@@-holes ,b) | |
1124 | ;; describes regions that can be concatenated (in reverse order) | |
1125 | ;; to "de-@@-format" the printed representation as the first step | |
1126 | ;; to translating it into some value. See internal func `gather'. | |
1127 | @-holes) | |
1128 | (flet ((sw () (skip-chars-forward " \t\n")) ; i.e., `[:space:]' | |
1129 | (at (tag) (save-excursion (eq tag (read buffer)))) | |
1130 | (to-eol () (buffer-substring-no-properties | |
1131 | (point) (progn (forward-line 1) | |
1132 | (1- (point))))) | |
1133 | (to-semi () (setq b (point) | |
1134 | e (progn (search-forward ";") | |
1135 | (1- (point))))) | |
1136 | (to-one@ () (setq @-holes nil | |
1137 | b (progn (search-forward "@") (point)) | |
1138 | e (progn (while (and (search-forward "@") | |
1139 | (= ?@ (char-after)) | |
1140 | (progn | |
1141 | (push (point) @-holes) | |
1142 | (forward-char 1) | |
1143 | (push (point) @-holes)))) | |
1144 | (1- (point))))) | |
1145 | (tok+val (set-b+e name &optional proc) | |
1146 | (unless (eq name (setq tok (read buffer))) | |
1147 | (error "Missing `%s' while parsing %s" name context)) | |
1148 | (sw) | |
1149 | (funcall set-b+e) | |
1150 | (cons tok (if proc | |
1151 | (funcall proc) | |
1152 | (buffer-substring-no-properties b e)))) | |
1153 | (k-semi (name &optional proc) (tok+val 'to-semi name proc)) | |
1154 | (gather () (let ((pairs `(,e ,@@-holes ,b)) | |
1155 | acc) | |
1156 | (while pairs | |
1157 | (push (buffer-substring-no-properties | |
1158 | (cadr pairs) (car pairs)) | |
1159 | acc) | |
1160 | (setq pairs (cddr pairs))) | |
1161 | (apply 'concat acc))) | |
1162 | (k-one@ (name &optional later) (tok+val 'to-one@ name | |
1163 | (if later | |
1164 | (lambda () t) | |
1165 | 'gather)))) | |
1166 | (save-excursion | |
1167 | (goto-char (point-min)) | |
1168 | ;; headers | |
1169 | (setq context 'headers) | |
1170 | (flet ((hpush (name &optional proc) | |
1171 | (push (k-semi name proc) headers))) | |
1172 | (hpush 'head) | |
1173 | (when (at 'branch) | |
1174 | (hpush 'branch)) | |
1175 | (hpush 'access) | |
1176 | (hpush 'symbols | |
1177 | (lambda () | |
1178 | (mapcar (lambda (together) | |
1179 | (let ((two (split-string together ":"))) | |
1180 | (setcar two (intern (car two))) | |
1181 | (setcdr two (cadr two)) | |
1182 | two)) | |
1183 | (split-string | |
1184 | (buffer-substring-no-properties b e))))) | |
1185 | (hpush 'locks)) | |
1186 | (push `(strict . ,(when (at 'strict) | |
1187 | (search-forward ";") | |
1188 | t)) | |
1189 | headers) | |
1190 | (when (at 'comment) | |
1191 | (push (k-one@ 'comment) headers) | |
1192 | (search-forward ";")) | |
1193 | (when (at 'expand) | |
1194 | (push (k-one@ 'expand) headers) | |
1195 | (search-forward ";")) | |
1196 | (setq headers (nreverse headers)) | |
1197 | ;; rev headers | |
1198 | (sw) (setq context 'rev-headers) | |
1199 | (while (looking-at "[0-9]") | |
1200 | (push `(,(to-eol) | |
1201 | ,(k-semi 'date | |
1202 | (lambda () | |
1203 | (let ((ls (mapcar 'string-to-number | |
1204 | (split-string | |
1205 | (buffer-substring-no-properties | |
1206 | b e) | |
1207 | "\\.")))) | |
1208 | ;; Hack the year -- verified to be the | |
1209 | ;; same algorithm used in RCS 5.7. | |
1210 | (when (< (car ls) 100) | |
1211 | (setcar ls (+ 1900 (car ls)))) | |
1212 | (apply 'encode-time (nreverse ls))))) | |
1213 | ,@(mapcar 'k-semi '(author state)) | |
1214 | ,(k-semi 'branches | |
1215 | (lambda () | |
1216 | (split-string | |
1217 | (buffer-substring-no-properties b e)))) | |
1218 | ,(k-semi 'next)) | |
1219 | revs) | |
1220 | (sw)) | |
1221 | (setq revs (nreverse revs)) | |
1222 | ;; desc | |
1223 | (sw) (setq context 'desc | |
1224 | desc (k-one@ 'desc)) | |
1225 | ;; rev bodies | |
1226 | (let (acc | |
1227 | ;; Element of `revs' that initially holds only header info. | |
1228 | ;; "Pairwise combination" occurs when we add body info. | |
1229 | rev | |
1230 | ;; Components of the editing commands (aside from the actual | |
1231 | ;; text) that comprise the `text' printed representations | |
1232 | ;; (not including the "head" revision). | |
1233 | cmd start act | |
1234 | ;; Ascending (reversed) `@-holes' which the internal func | |
1235 | ;; `incg' pops to effect incremental gathering. | |
1236 | asc | |
1237 | ;; Function to extract text (for the `a' command), either | |
1238 | ;; `incg' or `buffer-substring-no-properties'. (This is | |
1239 | ;; for speed; strictly speaking, it is sufficient to use | |
1240 | ;; only the former since it behaves identically to the | |
1241 | ;; latter in the absense of "@@".) | |
1242 | sub) | |
1243 | (flet ((incg (beg end) (let ((b beg) (e end) @-holes) | |
1244 | (while (and asc (< (car asc) e)) | |
1245 | (push (pop asc) @-holes)) | |
1246 | ;; Self-deprecate when work is done. | |
1247 | ;; Folding many dimensions into one. | |
1248 | ;; Thanks B.Mandelbrot, for complex sum. | |
1249 | ;; O beauteous math! --the Unvexed Bum | |
1250 | (unless asc | |
1251 | (setq sub 'buffer-substring-no-properties)) | |
1252 | (gather)))) | |
1253 | (while (and (sw) | |
1254 | (not (eobp)) | |
1255 | (setq context (to-eol) | |
1256 | rev (or (assoc context revs) | |
1257 | (error "Rev `%s' has body but no head" | |
1258 | context)))) | |
1259 | (push (k-one@ 'log) (cdr rev)) | |
1260 | ;; For rev body `text' tags, delay translation slightly... | |
1261 | (push (k-one@ 'text t) (cdr rev)) | |
1262 | ;; ... until we decide which tag and value is appropriate to | |
1263 | ;; collect. For the "head" revision, compute the value of the | |
1264 | ;; `text' printed representation by simple `gather'. For all | |
1265 | ;; other revisions, replace the `text' tag+value with `:insn' | |
1266 | ;; plus value, always scanning in-place. | |
1267 | (if (string= context (cdr (assq 'head headers))) | |
1268 | (setcdr (cadr rev) (gather)) | |
1269 | (if @-holes | |
1270 | (setq asc (nreverse @-holes) | |
1271 | sub 'incg) | |
1272 | (setq sub 'buffer-substring-no-properties)) | |
1273 | (goto-char b) | |
1274 | (setq acc nil) | |
1275 | (while (< (point) e) | |
1276 | (forward-char 1) | |
1277 | (setq cmd (char-before) | |
1278 | start (read (current-buffer)) | |
1279 | act (read (current-buffer))) | |
1280 | (forward-char 1) | |
1281 | (push (case cmd | |
1282 | (?d | |
1283 | ;; `d' means "delete lines". | |
1284 | ;; For Emacs spirit, we use `k' for "kill". | |
1285 | `(,start k ,act)) | |
1286 | (?a | |
1287 | ;; `a' means "append after this line" but | |
1288 | ;; internally we normalize it so that START | |
1289 | ;; specifies the actual line for insert, thus | |
1290 | ;; requiring less hair in the realization algs. | |
1291 | ;; For Emacs spirit, we use `i' for "insert". | |
1292 | `(,(1+ start) i | |
1293 | ,(funcall sub (point) (progn (forward-line act) | |
1294 | (point))))) | |
1295 | (t (error "Bad command `%c' in `text' for rev `%s'" | |
1296 | cmd context))) | |
1297 | acc)) | |
1298 | (goto-char (1+ e)) | |
1299 | (setcar (cdr rev) (cons :insn acc))))))) | |
1300 | ;; rv | |
1301 | `((headers ,desc ,@headers) | |
1302 | (revisions ,@revs))))) | |
1303 | ||
d8aff077 GM |
1304 | (provide 'vc-rcs) |
1305 | ||
fa63cb6d | 1306 | ;; arch-tag: 759b4916-5b0d-431d-b647-b185b8c652cf |
d8aff077 | 1307 | ;;; vc-rcs.el ends here |