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7a004b71 GM |
1 | ;;; vc-sccs.el --- support for SCCS version-control |
2 | ||
ab422c4d | 3 | ;; Copyright (C) 1992-2013 Free Software Foundation, Inc. |
7a004b71 GM |
4 | |
5 | ;; Author: FSF (see vc.el for full credits) | |
6 | ;; Maintainer: Andre Spiegel <spiegel@gnu.org> | |
bd78fa1d | 7 | ;; Package: vc |
7a004b71 | 8 | |
7a004b71 GM |
9 | ;; This file is part of GNU Emacs. |
10 | ||
eb3fa2cf | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
7a004b71 | 12 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
7a004b71 GM |
15 | |
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | ;; GNU General Public License for more details. | |
20 | ||
21 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
7a004b71 GM |
23 | |
24 | ;;; Commentary: | |
25 | ||
26 | ;;; Code: | |
27 | ||
f1180544 | 28 | (eval-when-compile |
a1e9f194 AS |
29 | (require 'vc)) |
30 | ||
f1180544 | 31 | ;;; |
8f98485f AS |
32 | ;;; Customization options |
33 | ;;; | |
34 | ||
14b11401 | 35 | ;; ;; Maybe a better solution is to not use "get" but "sccs get". |
7a58f64d GM |
36 | ;; ;; Note for GNU CSSC, you can parse sccs -V to get the libexec path. |
37 | ;; (defcustom vc-sccs-path | |
38 | ;; (prune-directory-list '("/usr/ccs/bin" "/usr/sccs" "/usr/lib/sccs" | |
39 | ;; "/usr/libexec/sccs")) | |
40 | ;; "List of extra directories to search for SCCS commands." | |
41 | ;; :type '(repeat directory) | |
42 | ;; :group 'vc) | |
14b11401 | 43 | |
67b0de11 CY |
44 | (defgroup vc-sccs nil |
45 | "VC SCCS backend." | |
46 | :version "24.1" | |
47 | :group 'vc) | |
48 | ||
7a004b71 | 49 | (defcustom vc-sccs-register-switches nil |
12fcd25a | 50 | "Switches for registering a file in SCCS. |
a7cafade | 51 | A string or list of strings passed to the checkin program by |
12fcd25a GM |
52 | \\[vc-register]. If nil, use the value of `vc-register-switches'. |
53 | If t, use no switches." | |
54 | :type '(choice (const :tag "Unspecified" nil) | |
55 | (const :tag "None" t) | |
7a004b71 | 56 | (string :tag "Argument String") |
12fcd25a | 57 | (repeat :tag "Argument List" :value ("") string)) |
a7cafade | 58 | :version "21.1" |
67b0de11 | 59 | :group 'vc-sccs) |
7a004b71 | 60 | |
a1e9f194 | 61 | (defcustom vc-sccs-diff-switches nil |
3edf7a64 GM |
62 | "String or list of strings specifying switches for SCCS diff under VC. |
63 | If nil, use the value of `vc-diff-switches'. If t, use no switches." | |
64 | :type '(choice (const :tag "Unspecified" nil) | |
65 | (const :tag "None" t) | |
a1e9f194 | 66 | (string :tag "Argument String") |
3edf7a64 | 67 | (repeat :tag "Argument List" :value ("") string)) |
a1e9f194 | 68 | :version "21.1" |
67b0de11 | 69 | :group 'vc-sccs) |
a1e9f194 | 70 | |
67141a37 | 71 | (defcustom vc-sccs-header '("%W%") |
9201cc28 | 72 | "Header keywords to be inserted by `vc-insert-headers'." |
8b7c8991 | 73 | :type '(repeat string) |
67141a37 | 74 | :version "24.1" ; no longer consult the obsolete vc-header-alist |
67b0de11 | 75 | :group 'vc-sccs) |
7a004b71 | 76 | |
91740b40 GM |
77 | ;; This needs to be autoloaded because vc-sccs-registered uses it (via |
78 | ;; vc-default-registered), and vc-hooks needs to be able to check | |
79 | ;; for a registered backend without loading every backend. | |
d2a54f13 | 80 | ;;;###autoload |
7a004b71 | 81 | (defcustom vc-sccs-master-templates |
d2a54f13 | 82 | (purecopy '("%sSCCS/s.%s" "%ss.%s" vc-sccs-search-project-dir)) |
9201cc28 | 83 | "Where to look for SCCS master files. |
7a004b71 GM |
84 | For a description of possible values, see `vc-check-master-templates'." |
85 | :type '(choice (const :tag "Use standard SCCS file names" | |
86 | ("%sSCCS/s.%s" "%ss.%s" vc-sccs-search-project-dir)) | |
87 | (repeat :tag "User-specified" | |
88 | (choice string | |
89 | function))) | |
a7cafade | 90 | :version "21.1" |
67b0de11 | 91 | :group 'vc-sccs) |
7a004b71 | 92 | |
8f98485f AS |
93 | \f |
94 | ;;; | |
95 | ;;; Internal variables | |
96 | ;;; | |
97 | ||
099bd78a SM |
98 | (defconst vc-sccs-name-assoc-file "VC-names") |
99 | ||
8f98485f | 100 | \f |
8cdd17b4 ER |
101 | ;;; Properties of the backend |
102 | ||
14b11401 | 103 | (defun vc-sccs-revision-granularity () 'file) |
70e2f6c7 | 104 | (defun vc-sccs-checkout-model (files) 'locking) |
8cdd17b4 | 105 | |
8f98485f AS |
106 | ;;; |
107 | ;;; State-querying functions | |
108 | ;;; | |
109 | ||
630d468c GM |
110 | ;; The autoload cookie below places vc-sccs-registered directly into |
111 | ;; loaddefs.el, so that vc-sccs.el does not need to be loaded for | |
7bd302eb GM |
112 | ;; every file that is visited. |
113 | ;;;###autoload | |
114 | (progn | |
115 | (defun vc-sccs-registered (f) (vc-default-registered 'SCCS f))) | |
7a004b71 GM |
116 | |
117 | (defun vc-sccs-state (file) | |
118 | "SCCS-specific function to compute the version control state." | |
3702367b ER |
119 | (if (not (vc-sccs-registered file)) |
120 | 'unregistered | |
121 | (with-temp-buffer | |
122 | (if (vc-insert-file (vc-sccs-lock-file file)) | |
123 | (let* ((locks (vc-sccs-parse-locks)) | |
124 | (working-revision (vc-working-revision file)) | |
125 | (locking-user (cdr (assoc working-revision locks)))) | |
126 | (if (not locking-user) | |
127 | (if (vc-workfile-unchanged-p file) | |
128 | 'up-to-date | |
129 | 'unlocked-changes) | |
130 | (if (string= locking-user (vc-user-login-name file)) | |
131 | 'edited | |
132 | locking-user))) | |
133 | 'up-to-date)))) | |
7a004b71 GM |
134 | |
135 | (defun vc-sccs-state-heuristic (file) | |
136 | "SCCS-specific state heuristic." | |
137 | (if (not (vc-mistrust-permissions file)) | |
138 | ;; This implementation assumes that any file which is under version | |
139 | ;; control and has -rw-r--r-- is locked by its owner. This is true | |
140 | ;; for both RCS and SCCS, which keep unlocked files at -r--r--r--. | |
141 | ;; We have to be careful not to exclude files with execute bits on; | |
142 | ;; scripts can be under version control too. Also, we must ignore the | |
143 | ;; group-read and other-read bits, since paranoid users turn them off. | |
bbd88348 AS |
144 | (let* ((attributes (file-attributes file 'string)) |
145 | (owner-name (nth 2 attributes)) | |
7a004b71 GM |
146 | (permissions (nth 8 attributes))) |
147 | (if (string-match ".r-..-..-." permissions) | |
148 | 'up-to-date | |
149 | (if (string-match ".rw..-..-." permissions) | |
150 | (if (file-ownership-preserved-p file) | |
151 | 'edited | |
bbd88348 | 152 | owner-name) |
8bfde4be AS |
153 | ;; Strange permissions. |
154 | ;; Fall through to real state computation. | |
155 | (vc-sccs-state file)))) | |
156 | (vc-sccs-state file))) | |
7a004b71 | 157 | |
c1b51374 | 158 | (defun vc-sccs-dir-status (dir update-function) |
4b1a01b3 DN |
159 | ;; FIXME: this function should be rewritten, using `vc-expand-dirs' |
160 | ;; is not TRTD because it returns files from multiple backends. | |
161 | ;; It should also return 'unregistered files. | |
162 | ||
163 | ;; Doing lots of individual VC-state calls is painful, but | |
5a9de6d0 | 164 | ;; there is no better option in SCCS-land. |
90e9ca17 DN |
165 | (let ((flist (vc-expand-dirs (list dir))) |
166 | (result nil)) | |
167 | (dolist (file flist) | |
168 | (let ((state (vc-state file)) | |
169 | (frel (file-relative-name file))) | |
4b1a01b3 DN |
170 | (when (and (eq (vc-backend file) 'SCCS) |
171 | (not (eq state 'up-to-date))) | |
172 | (push (list frel state) result)))) | |
c1b51374 | 173 | (funcall update-function result))) |
90e9ca17 | 174 | |
ac3f4c6f ER |
175 | (defun vc-sccs-working-revision (file) |
176 | "SCCS-specific version of `vc-working-revision'." | |
7a004b71 | 177 | (with-temp-buffer |
5b5afd50 | 178 | ;; The working revision is always the latest revision number. |
8bfde4be AS |
179 | ;; To find this number, search the entire delta table, |
180 | ;; rather than just the first entry, because the | |
5b5afd50 | 181 | ;; first entry might be a deleted ("R") revision. |
8bfde4be | 182 | (vc-insert-file (vc-name file) "^\001e\n\001[^s]") |
7a004b71 GM |
183 | (vc-parse-buffer "^\001d D \\([^ ]+\\)" 1))) |
184 | ||
7a58f64d GM |
185 | ;; Cf vc-sccs-find-revision. |
186 | (defun vc-sccs-write-revision (file outfile &optional rev) | |
187 | "Write the SCCS version of input file FILE to output file OUTFILE. | |
188 | Optional string REV is a revision." | |
189 | (with-temp-buffer | |
190 | (apply 'vc-sccs-do-command t 0 "get" (vc-name file) | |
191 | (append '("-s" "-p" "-k") ; -k: no keyword expansion | |
192 | (if rev (list (concat "-r" rev))))) | |
193 | (write-region nil nil outfile nil 'silent))) | |
194 | ||
7a004b71 | 195 | (defun vc-sccs-workfile-unchanged-p (file) |
fa63cb6d | 196 | "SCCS-specific implementation of `vc-workfile-unchanged-p'." |
08f9f738 GM |
197 | (let ((tempfile (make-temp-file "vc-sccs"))) |
198 | (unwind-protect | |
199 | (progn | |
7a58f64d | 200 | (vc-sccs-write-revision file tempfile (vc-working-revision file)) |
08f9f738 GM |
201 | (zerop (vc-do-command "*vc*" 1 "cmp" file tempfile))) |
202 | (delete-file tempfile)))) | |
7a004b71 | 203 | |
7a004b71 | 204 | \f |
8f98485f AS |
205 | ;;; |
206 | ;;; State-changing functions | |
207 | ;;; | |
7a004b71 | 208 | |
14b11401 SM |
209 | (defun vc-sccs-do-command (buffer okstatus command file-or-list &rest flags) |
210 | ;; (let ((load-path (append vc-sccs-path load-path))) | |
211 | ;; (apply 'vc-do-command buffer okstatus command file-or-list flags)) | |
2888a97e | 212 | (apply 'vc-do-command (or buffer "*vc*") okstatus "sccs" file-or-list command flags)) |
14b11401 | 213 | |
8cdd17b4 ER |
214 | (defun vc-sccs-create-repo () |
215 | "Create a new SCCS repository." | |
216 | ;; SCCS is totally file-oriented, so all we have to do is make the directory | |
217 | (make-directory "SCCS")) | |
218 | ||
219 | (defun vc-sccs-register (files &optional rev comment) | |
220 | "Register FILES into the SCCS version-control system. | |
7a004b71 | 221 | REV is the optional revision number for the file. COMMENT can be used |
8cdd17b4 | 222 | to provide an initial description of FILES. |
12fcd25a GM |
223 | Passes either `vc-sccs-register-switches' or `vc-register-switches' |
224 | to the SCCS command. | |
7a004b71 | 225 | |
8cdd17b4 | 226 | Automatically retrieve a read-only version of the files with keywords |
7a004b71 | 227 | expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." |
8cdd17b4 | 228 | (dolist (file files) |
dc0f87c9 | 229 | (let* ((dirname (or (file-name-directory file) "")) |
7a004b71 GM |
230 | (basename (file-name-nondirectory file)) |
231 | (project-file (vc-sccs-search-project-dir dirname basename))) | |
232 | (let ((vc-name | |
233 | (or project-file | |
dc0f87c9 | 234 | (format (car vc-sccs-master-templates) dirname basename)))) |
14b11401 | 235 | (apply 'vc-sccs-do-command nil 0 "admin" vc-name |
8cdd17b4 | 236 | (and rev (not (string= rev "")) (concat "-r" rev)) |
7a004b71 | 237 | "-fb" |
0cccd8ff | 238 | (concat "-i" (file-relative-name file)) |
7a004b71 | 239 | (and comment (concat "-y" comment)) |
dc0f87c9 | 240 | (vc-switches 'SCCS 'register))) |
7a004b71 GM |
241 | (delete-file file) |
242 | (if vc-keep-workfiles | |
14b11401 | 243 | (vc-sccs-do-command nil 0 "get" (vc-name file)))))) |
7a004b71 | 244 | |
8f98485f AS |
245 | (defun vc-sccs-responsible-p (file) |
246 | "Return non-nil if SCCS thinks it would be responsible for registering FILE." | |
247 | ;; TODO: check for all the patterns in vc-sccs-master-templates | |
248 | (or (file-directory-p (expand-file-name "SCCS" (file-name-directory file))) | |
249 | (stringp (vc-sccs-search-project-dir (or (file-name-directory file) "") | |
250 | (file-name-nondirectory file))))) | |
251 | ||
4624de78 | 252 | (defun vc-sccs-checkin (files rev comment) |
8f98485f | 253 | "SCCS-specific version of `vc-backend-checkin'." |
e7290559 | 254 | (dolist (file (vc-expand-dirs files)) |
14b11401 | 255 | (apply 'vc-sccs-do-command nil 0 "delta" (vc-name file) |
8cdd17b4 ER |
256 | (if rev (concat "-r" rev)) |
257 | (concat "-y" comment) | |
258 | (vc-switches 'SCCS 'checkin)) | |
259 | (if vc-keep-workfiles | |
14b11401 | 260 | (vc-sccs-do-command nil 0 "get" (vc-name file))))) |
8f98485f | 261 | |
ac3f4c6f | 262 | (defun vc-sccs-find-revision (file rev buffer) |
14b11401 | 263 | (apply 'vc-sccs-do-command |
52876673 SM |
264 | buffer 0 "get" (vc-name file) |
265 | "-s" ;; suppress diagnostic output | |
266 | "-p" | |
267 | (and rev | |
268 | (concat "-r" | |
269 | (vc-sccs-lookup-triple file rev))) | |
dc0f87c9 | 270 | (vc-switches 'SCCS 'checkout))) |
52876673 SM |
271 | |
272 | (defun vc-sccs-checkout (file &optional editable rev) | |
5b5afd50 | 273 | "Retrieve a copy of a saved revision of SCCS controlled FILE. |
e7290559 | 274 | If FILE is a directory, all version-controlled files beneath are checked out. |
1862f9ef | 275 | EDITABLE non-nil means that the file should be writable and |
52876673 | 276 | locked. REV is the revision to check out." |
a2a413ad | 277 | (if (file-directory-p file) |
e7290559 ER |
278 | (mapc 'vc-sccs-checkout (vc-expand-dirs (list file))) |
279 | (let ((file-buffer (get-file-buffer file)) | |
280 | switches) | |
281 | (message "Checking out %s..." file) | |
282 | (save-excursion | |
283 | ;; Change buffers to get local value of vc-checkout-switches. | |
284 | (if file-buffer (set-buffer file-buffer)) | |
285 | (setq switches (vc-switches 'SCCS 'checkout)) | |
286 | ;; Save this buffer's default-directory | |
287 | ;; and use save-excursion to make sure it is restored | |
288 | ;; in the same buffer it was saved in. | |
289 | (let ((default-directory default-directory)) | |
290 | (save-excursion | |
291 | ;; Adjust the default-directory so that the check-out creates | |
292 | ;; the file in the right place. | |
293 | (setq default-directory (file-name-directory file)) | |
294 | ||
295 | (and rev (or (string= rev "") | |
296 | (not (stringp rev))) | |
297 | (setq rev nil)) | |
298 | (apply 'vc-sccs-do-command nil 0 "get" (vc-name file) | |
299 | (if editable "-e") | |
300 | (and rev (concat "-r" (vc-sccs-lookup-triple file rev))) | |
301 | switches)))) | |
302 | (message "Checking out %s...done" file)))) | |
7a004b71 | 303 | |
5b5afd50 | 304 | (defun vc-sccs-rollback (files) |
e7290559 ER |
305 | "Roll back, undoing the most recent checkins of FILES. Directories |
306 | are expanded to all version-controlled subfiles." | |
307 | (setq files (vc-expand-dirs files)) | |
8cdd17b4 | 308 | (if (not files) |
5a0c3f56 | 309 | (error "SCCS backend doesn't support directory-level rollback")) |
8cdd17b4 | 310 | (dolist (file files) |
ac3f4c6f | 311 | (let ((discard (vc-working-revision file))) |
a2a413ad | 312 | (if (null (yes-or-no-p (format "Remove version %s from %s history? " |
8cdd17b4 ER |
313 | discard file))) |
314 | (error "Aborted")) | |
315 | (message "Removing revision %s from %s..." discard file) | |
14b11401 SM |
316 | (vc-sccs-do-command nil 0 "rmdel" |
317 | (vc-name file) (concat "-r" discard)) | |
318 | (vc-sccs-do-command nil 0 "get" (vc-name file) nil)))) | |
8cdd17b4 | 319 | |
99739bbf | 320 | (defun vc-sccs-revert (file &optional contents-done) |
e7290559 ER |
321 | "Revert FILE to the version it was based on. If FILE is a directory, |
322 | revert all subfiles." | |
a2a413ad | 323 | (if (file-directory-p file) |
e7290559 ER |
324 | (mapc 'vc-sccs-revert (vc-expand-dirs (list file))) |
325 | (vc-sccs-do-command nil 0 "unget" (vc-name file)) | |
326 | (vc-sccs-do-command nil 0 "get" (vc-name file)) | |
327 | ;; Checking out explicit revisions is not supported under SCCS, yet. | |
328 | ;; We always "revert" to the latest revision; therefore | |
329 | ;; vc-working-revision is cleared here so that it gets recomputed. | |
330 | (vc-file-setprop file 'vc-working-revision nil))) | |
8f98485f | 331 | |
8f98485f AS |
332 | (defun vc-sccs-steal-lock (file &optional rev) |
333 | "Steal the lock on the current workfile for FILE and revision REV." | |
a2a413ad | 334 | (if (file-directory-p file) |
e7290559 ER |
335 | (mapc 'vc-sccs-steal-lock (vc-expand-dirs (list file))) |
336 | (vc-sccs-do-command nil 0 "unget" | |
337 | (vc-name file) "-n" (if rev (concat "-r" rev))) | |
338 | (vc-sccs-do-command nil 0 "get" | |
339 | (vc-name file) "-g" (if rev (concat "-r" rev))))) | |
8f98485f | 340 | |
9b64a7f0 ER |
341 | (defun vc-sccs-modify-change-comment (files rev comment) |
342 | "Modify (actually, append to) the change comments for FILES on a specified REV." | |
e7290559 | 343 | (dolist (file (vc-expand-dirs files)) |
a2a413ad | 344 | (vc-sccs-do-command nil 0 "cdc" (vc-name file) |
14b11401 | 345 | (concat "-y" comment) (concat "-r" rev)))) |
9b64a7f0 | 346 | |
8f98485f AS |
347 | \f |
348 | ;;; | |
349 | ;;; History functions | |
350 | ;;; | |
351 | ||
662c5698 | 352 | (defun vc-sccs-print-log (files buffer &optional shortlog start-revision-ignored limit) |
8cdd17b4 | 353 | "Get change log associated with FILES." |
e7290559 | 354 | (setq files (vc-expand-dirs files)) |
48b27575 DN |
355 | (vc-sccs-do-command buffer 0 "prs" (mapcar 'vc-name files)) |
356 | (when limit 'limit-unsupported)) | |
8cdd17b4 | 357 | |
7a58f64d | 358 | ;; FIXME use sccsdiff if present? |
8cdd17b4 ER |
359 | (defun vc-sccs-diff (files &optional oldvers newvers buffer) |
360 | "Get a difference report using SCCS between two filesets." | |
e7290559 | 361 | (setq files (vc-expand-dirs files)) |
e46e905a GM |
362 | (setq oldvers (vc-sccs-lookup-triple (car files) oldvers)) |
363 | (setq newvers (vc-sccs-lookup-triple (car files) newvers)) | |
7a58f64d GM |
364 | (or buffer (setq buffer "*vc-diff*")) |
365 | ;; We have to reimplement pieces of vc-do-command, because | |
366 | ;; we want to run multiple external commands, and only do the setup | |
367 | ;; and exit pieces once. | |
368 | (save-current-buffer | |
369 | (unless (or (eq buffer t) | |
370 | (and (stringp buffer) (string= (buffer-name) buffer)) | |
371 | (eq buffer (current-buffer))) | |
372 | (vc-setup-buffer buffer)) | |
373 | (let* ((fake-flags (append (vc-switches 'SCCS 'diff) | |
374 | (if oldvers (list (concat " -r" oldvers))) | |
375 | (if newvers (list (concat " -r" newvers))))) | |
376 | (fake-command | |
377 | (format "diff%s %s" | |
378 | (if fake-flags | |
379 | (concat " " (mapconcat 'identity fake-flags " ")) | |
380 | "") | |
381 | (vc-delistify files))) | |
382 | (status 0) | |
383 | (oldproc (get-buffer-process (current-buffer)))) | |
384 | (when vc-command-messages | |
385 | (message "Running %s in foreground..." fake-command)) | |
386 | (if oldproc (delete-process oldproc)) | |
387 | (dolist (file files) | |
388 | (let ((oldfile (make-temp-file "vc-sccs")) | |
389 | newfile) | |
390 | (unwind-protect | |
391 | (progn | |
392 | (vc-sccs-write-revision file oldfile oldvers) | |
393 | (if newvers | |
394 | (vc-sccs-write-revision file (setq newfile | |
395 | (make-temp-file "vc-sccs")) | |
396 | newvers)) | |
397 | (let* ((inhibit-read-only t) | |
398 | (buffer-undo-list t) | |
399 | (process-environment | |
400 | (cons "LC_MESSAGES=C" process-environment)) | |
401 | (w32-quote-process-args t) | |
402 | (this-status | |
403 | (apply 'process-file "diff" nil t nil | |
404 | (append (vc-switches 'SCCS 'diff) | |
405 | (list oldfile | |
406 | (or newfile | |
407 | (file-relative-name file))))))) | |
408 | (or (integerp this-status) (setq status 'error)) | |
409 | (and (integerp status) | |
410 | (> this-status status) | |
411 | (setq status this-status)))) | |
412 | (delete-file oldfile) | |
413 | (if newfile (delete-file newfile))))) | |
414 | (when (or (not (integerp status)) (> status 1)) | |
415 | (unless (eq ?\s (aref (buffer-name (current-buffer)) 0)) | |
416 | (pop-to-buffer (current-buffer)) | |
417 | (goto-char (point-min)) | |
418 | (shrink-window-if-larger-than-buffer)) | |
419 | (error "Running %s...FAILED (%s)" fake-command | |
420 | (if (integerp status) (format "status %d" status) status))) | |
421 | (when vc-command-messages | |
422 | (message "Running %s...OK = %d" fake-command status)) | |
423 | ;; Should we pretend we ran sccsdiff instead? | |
424 | ;; This might not actually be a valid diff command. | |
425 | (run-hook-with-args 'vc-post-command-functions "diff" files fake-flags) | |
426 | status))) | |
8f98485f AS |
427 | |
428 | \f | |
429 | ;;; | |
370fded4 ER |
430 | ;;; Tag system. SCCS doesn't have tags, so we simulate them by maintaining |
431 | ;;; our own set of name-to-revision mappings. | |
8f98485f AS |
432 | ;;; |
433 | ||
70df4bbe | 434 | (defun vc-sccs-create-tag (dir name branchp) |
370fded4 | 435 | (when branchp |
70df4bbe | 436 | (error "SCCS backend does not support module branches")) |
370fded4 ER |
437 | (let ((result (vc-tag-precondition dir))) |
438 | (if (stringp result) | |
439 | (error "File %s is not up-to-date" result) | |
440 | (vc-file-tree-walk | |
441 | dir | |
442 | (lambda (f) | |
443 | (vc-sccs-add-triple name f (vc-working-revision f))))))) | |
8f98485f AS |
444 | |
445 | \f | |
446 | ;;; | |
447 | ;;; Miscellaneous | |
448 | ;;; | |
449 | ||
3b64d86b DN |
450 | (defun vc-sccs-previous-revision (file rev) |
451 | (vc-call-backend 'RCS 'previous-revision file rev)) | |
452 | ||
453 | (defun vc-sccs-next-revision (file rev) | |
454 | (vc-call-backend 'RCS 'next-revision file rev)) | |
455 | ||
8f98485f AS |
456 | (defun vc-sccs-check-headers () |
457 | "Check if the current file has any headers in it." | |
458 | (save-excursion | |
459 | (goto-char (point-min)) | |
460 | (re-search-forward "%[A-Z]%" nil t))) | |
461 | ||
462 | (defun vc-sccs-rename-file (old new) | |
463 | ;; Move the master file (using vc-rcs-master-templates). | |
464 | (vc-rename-master (vc-name old) new vc-sccs-master-templates) | |
370fded4 | 465 | ;; Update the tag file. |
8f98485f AS |
466 | (with-current-buffer |
467 | (find-file-noselect | |
468 | (expand-file-name vc-sccs-name-assoc-file | |
469 | (file-name-directory (vc-name old)))) | |
470 | (goto-char (point-min)) | |
471 | ;; (replace-regexp (concat ":" (regexp-quote old) "$") (concat ":" new)) | |
472 | (while (re-search-forward (concat ":" (regexp-quote old) "$") nil t) | |
473 | (replace-match (concat ":" new) nil nil)) | |
474 | (basic-save-buffer) | |
475 | (kill-buffer (current-buffer)))) | |
476 | ||
77bf3f54 DN |
477 | (defun vc-sccs-find-file-hook () |
478 | ;; If the file is locked by some other user, make | |
479 | ;; the buffer read-only. Like this, even root | |
480 | ;; cannot modify a file that someone else has locked. | |
d56fdcd2 DN |
481 | (and (stringp (vc-state buffer-file-name 'SCCS)) |
482 | (setq buffer-read-only t))) | |
77bf3f54 | 483 | |
8f98485f AS |
484 | \f |
485 | ;;; | |
486 | ;;; Internal functions | |
487 | ;;; | |
488 | ||
489 | ;; This function is wrapped with `progn' so that the autoload cookie | |
490 | ;; copies the whole function itself into loaddefs.el rather than just placing | |
491 | ;; a (autoload 'vc-sccs-search-project-dir "vc-sccs") which would not | |
492 | ;; help us avoid loading vc-sccs. | |
493 | ;;;###autoload | |
494 | (progn (defun vc-sccs-search-project-dir (dirname basename) | |
495 | "Return the name of a master file in the SCCS project directory. | |
496 | Does not check whether the file exists but returns nil if it does not | |
497 | find any project directory." | |
498 | (let ((project-dir (getenv "PROJECTDIR")) dirs dir) | |
499 | (when project-dir | |
500 | (if (file-name-absolute-p project-dir) | |
501 | (setq dirs '("SCCS" "")) | |
502 | (setq dirs '("src/SCCS" "src" "source/SCCS" "source")) | |
503 | (setq project-dir (expand-file-name (concat "~" project-dir)))) | |
504 | (while (and (not dir) dirs) | |
505 | (setq dir (expand-file-name (car dirs) project-dir)) | |
506 | (unless (file-directory-p dir) | |
507 | (setq dir nil) | |
508 | (setq dirs (cdr dirs)))) | |
509 | (and dir (expand-file-name (concat "s." basename) dir)))))) | |
510 | ||
511 | (defun vc-sccs-lock-file (file) | |
512 | "Generate lock file name corresponding to FILE." | |
513 | (let ((master (vc-name file))) | |
514 | (and | |
515 | master | |
516 | (string-match "\\(.*/\\)\\(s\\.\\)\\(.*\\)" master) | |
517 | (replace-match "p." t t master 2)))) | |
518 | ||
519 | (defun vc-sccs-parse-locks () | |
520 | "Parse SCCS locks in current buffer. | |
5b5afd50 | 521 | The result is a list of the form ((REVISION . USER) (REVISION . USER) ...)." |
8f98485f AS |
522 | (let (master-locks) |
523 | (goto-char (point-min)) | |
524 | (while (re-search-forward "^\\([0-9.]+\\) [0-9.]+ \\([^ ]+\\) .*\n?" | |
525 | nil t) | |
526 | (setq master-locks | |
527 | (cons (cons (match-string 1) (match-string 2)) master-locks))) | |
528 | ;; FIXME: is it really necessary to reverse ? | |
529 | (nreverse master-locks))) | |
530 | ||
531 | (defun vc-sccs-add-triple (name file rev) | |
532 | (with-current-buffer | |
533 | (find-file-noselect | |
534 | (expand-file-name vc-sccs-name-assoc-file | |
535 | (file-name-directory (vc-name file)))) | |
536 | (goto-char (point-max)) | |
537 | (insert name "\t:\t" file "\t" rev "\n") | |
538 | (basic-save-buffer) | |
539 | (kill-buffer (current-buffer)))) | |
540 | ||
541 | (defun vc-sccs-lookup-triple (file name) | |
370fded4 | 542 | "Return the numeric revision corresponding to a named tag of FILE. |
5b5afd50 | 543 | If NAME is nil or a revision number string it's just passed through." |
8f98485f AS |
544 | (if (or (null name) |
545 | (let ((firstchar (aref name 0))) | |
546 | (and (>= firstchar ?0) (<= firstchar ?9)))) | |
547 | name | |
548 | (with-temp-buffer | |
549 | (vc-insert-file | |
550 | (expand-file-name vc-sccs-name-assoc-file | |
551 | (file-name-directory (vc-name file)))) | |
552 | (vc-parse-buffer (concat name "\t:\t" file "\t\\(.+\\)") 1)))) | |
7a004b71 GM |
553 | |
554 | (provide 'vc-sccs) | |
555 | ||
556 | ;;; vc-sccs.el ends here |