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594722a8 ER |
1 | ;;; vc.el --- drive a version-control system from within Emacs |
2 | ||
0e362f54 | 3 | ;; Copyright (C) 1992,93,94,95,96,97,98,2000 Free Software Foundation, Inc. |
594722a8 | 4 | |
0e362f54 GM |
5 | ;; Author: FSF (see below for full credits) |
6 | ;; Maintainer: Andre Spiegel <spiegel@gnu.org> | |
594722a8 | 7 | |
72cfc5fb | 8 | ;; $Id: vc.el,v 1.275 2000/10/03 11:22:13 spiegel Exp $ |
045e1aa5 | 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 | 26 | |
0e362f54 GM |
27 | ;;; Credits: |
28 | ||
29 | ;; VC was initially designed and implemented by Eric S. Raymond | |
30 | ;; <esr@snark.thyrsus.com>. Over the years, many people have | |
31 | ;; contributed substantial amounts of work to VC. These include: | |
32 | ;; Per Cederqvist <ceder@lysator.liu.se> | |
33 | ;; Paul Eggert <eggert@twinsun.com> | |
34 | ;; Sebastian Kremer <sk@thp.uni-koeln.de> | |
35 | ;; Martin Lorentzson <martinl@gnu.org> | |
6f41eeb5 | 36 | ;; Dave Love <d.love@gnu.org> |
0e362f54 GM |
37 | ;; Stefan Monnier <monnier@cs.yale.edu> |
38 | ;; Andre Spiegel <spiegel@gnu.org> | |
39 | ;; Richard Stallman <rms@gnu.org> | |
40 | ;; ttn@netcom.com | |
41 | ||
594722a8 ER |
42 | ;;; Commentary: |
43 | ||
1a2f456b ER |
44 | ;; This mode is fully documented in the Emacs user's manual. |
45 | ;; | |
632e9525 | 46 | ;; Supported version-control systems presently include SCCS, RCS, and CVS. |
b0c9bc8c AS |
47 | ;; |
48 | ;; Some features will not work with old RCS versions. Where | |
49 | ;; appropriate, VC finds out which version you have, and allows or | |
0e362f54 | 50 | ;; disallows those features (stealing locks, for example, works only |
b0c9bc8c | 51 | ;; from 5.6.2 onwards). |
632e9525 RS |
52 | ;; Even initial checkins will fail if your RCS version is so old that ci |
53 | ;; doesn't understand -t-; this has been known to happen to people running | |
0e362f54 | 54 | ;; NExTSTEP 3.0. |
594722a8 | 55 | ;; |
0e362f54 | 56 | ;; You can support the RCS -x option by customizing vc-rcs-master-templates. |
594722a8 ER |
57 | ;; |
58 | ;; Proper function of the SCCS diff commands requires the shellscript vcdiff | |
59 | ;; to be installed somewhere on Emacs's path for executables. | |
60 | ;; | |
1a2f456b | 61 | ;; If your site uses the ChangeLog convention supported by Emacs, the |
594be62e | 62 | ;; function vc-comment-to-change-log should prove a useful checkin hook. |
1a2f456b | 63 | ;; |
594722a8 ER |
64 | ;; The vc code maintains some internal state in order to reduce expensive |
65 | ;; version-control operations to a minimum. Some names are only computed | |
34291cd2 | 66 | ;; once. If you perform version control operations with RCS/SCCS/CVS while |
594722a8 ER |
67 | ;; vc's back is turned, or move/rename master files while vc is running, |
68 | ;; vc may get seriously confused. Don't do these things! | |
69 | ;; | |
70 | ;; Developer's notes on some concurrency issues are included at the end of | |
71 | ;; the file. | |
72 | ||
73 | ;;; Code: | |
74 | ||
0e362f54 GM |
75 | ;;;;;;;;;;;;;;;;; Backend-specific functions ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;; |
76 | ;; | |
77 | ;; for each operation FUN, the backend should provide a function vc-BACKEND-FUN. | |
1d502d5a | 78 | ;; Operations marked with a `-' instead of a `*' are optional. |
0e362f54 GM |
79 | |
80 | ;; * registered (file) | |
81 | ;; * state (file) | |
82 | ;; - state-heuristic (file) | |
83 | ;; The default behavior delegates to `state'. | |
84 | ;; - dir-state (dir) | |
85 | ;; * checkout-model (file) | |
86 | ;; - mode-line-string (file) | |
87 | ;; * workfile-version (file) | |
88 | ;; * revert (file) | |
099bd78a SM |
89 | ;; - merge-news (file) |
90 | ;; Only needed if state `needs-merge' is possible. | |
91 | ;; - merge (file rev1 rev2) | |
92 | ;; - steal-lock (file &optional version) | |
93 | ;; Only required if files can be locked by somebody else. | |
0e362f54 | 94 | ;; * register (file rev comment) |
1d502d5a | 95 | ;; * unregister (file backend) |
72cfc5fb | 96 | ;; - receive-file (file rev) |
099bd78a | 97 | ;; - responsible-p (file) |
0e362f54 GM |
98 | ;; Should also work if FILE is a directory (ends with a slash). |
99 | ;; - could-register (file) | |
100 | ;; * checkout (file writable &optional rev destfile) | |
101 | ;; Checkout revision REV of FILE into DESTFILE. | |
102 | ;; DESTFILE defaults to FILE. | |
103 | ;; The file should be made writable if WRITABLE is non-nil. | |
104 | ;; REV can be nil (BASE) or "" (HEAD) or any other revision. | |
105 | ;; * checkin (file rev comment) | |
106 | ;; - logentry-check () | |
107 | ;; * diff (file &optional rev1 rev2) | |
108 | ;; Insert the diff for FILE into the current buffer. | |
109 | ;; REV1 should default to workfile-version. | |
110 | ;; REV2 should default to the current workfile | |
111 | ;; Return a status of either 0 (i.e. no diff) or 1 (i.e. either non-empty | |
112 | ;; diff or the diff is run asynchronously). | |
113 | ;; - workfile-unchanged-p (file) | |
114 | ;; Return non-nil if FILE is unchanged from its current workfile version. | |
115 | ;; This function should do a brief comparison of FILE's contents | |
116 | ;; with those of the master version. If the backend does not have | |
117 | ;; such a brief-comparison feature, the default implementation of this | |
118 | ;; function can be used, which delegates to a full vc-BACKEND-diff. | |
119 | ;; - clear-headers () | |
120 | ;; * check-headers () | |
121 | ;; - dired-state-info (file) | |
122 | ;; - create-snapshot (dir name branchp) | |
123 | ;; Take a snapshot of the current state of files under DIR and name it NAME. | |
124 | ;; This should make sure that files are up-to-date before proceeding | |
125 | ;; with the action. | |
126 | ;; DIR can also be a file and if BRANCHP is specified, NAME | |
127 | ;; should be created as a branch and DIR should be checked out under | |
128 | ;; this new branch. The default behavior does not support branches | |
129 | ;; but does a sanity check, a tree traversal and for each file calls | |
130 | ;; `assign-name'. | |
131 | ;; * assign-name (file name) | |
132 | ;; Give name NAME to the current version of FILE, assuming it is | |
133 | ;; up-to-date. Only used by the default version of `create-snapshot'. | |
134 | ;; - retrieve-snapshot (dir name update) | |
135 | ;; Retrieve a named snapshot of all registered files at or below DIR. | |
6f41eeb5 | 136 | ;; If UPDATE is non-nil, then update buffers of any files in the snapshot |
0e362f54 GM |
137 | ;; that are currently visited. |
138 | ;; * print-log (file) | |
139 | ;; Insert the revision log of FILE into the current buffer. | |
140 | ;; - show-log-entry (version) | |
1d502d5a | 141 | ;; - comment-history (file) |
0e362f54 GM |
142 | ;; - update-changelog (files) |
143 | ;; Find changelog entries for FILES, or for all files at or below | |
144 | ;; the default-directory if FILES is nil. | |
145 | ;; * latest-on-branch-p (file) | |
099bd78a SM |
146 | ;; - cancel-version (file writable) |
147 | ;; - rename-file (old new) | |
148 | ;; - annotate-command (file buf) | |
149 | ;; - annotate-difference (pos) | |
150 | ;; Only required if `annotate-command' is defined for the backend. | |
0e362f54 | 151 | |
594722a8 | 152 | (require 'vc-hooks) |
8c0aaf40 | 153 | (require 'ring) |
0e362f54 | 154 | (eval-when-compile |
7849e179 | 155 | (require 'cl) |
099bd78a SM |
156 | (require 'compile) |
157 | (require 'dired) ; for dired-map-over-marks macro | |
158 | (require 'dired-aux)) ; for dired-kill-{line,tree} | |
8c0aaf40 ER |
159 | |
160 | (if (not (assoc 'vc-parent-buffer minor-mode-alist)) | |
161 | (setq minor-mode-alist | |
162 | (cons '(vc-parent-buffer vc-parent-buffer-name) | |
163 | minor-mode-alist))) | |
594722a8 ER |
164 | |
165 | ;; General customization | |
166 | ||
0101cc40 RS |
167 | (defgroup vc nil |
168 | "Version-control system in Emacs." | |
169 | :group 'tools) | |
170 | ||
171 | (defcustom vc-suppress-confirm nil | |
172 | "*If non-nil, treat user as expert; suppress yes-no prompts on some things." | |
173 | :type 'boolean | |
174 | :group 'vc) | |
175 | ||
2c4eea90 KH |
176 | (defcustom vc-delete-logbuf-window t |
177 | "*If non-nil, delete the *VC-log* buffer and window after each logical action. | |
178 | If nil, bury that buffer instead. | |
179 | This is most useful if you have multiple windows on a frame and would like to | |
180 | preserve the setting." | |
181 | :type 'boolean | |
182 | :group 'vc) | |
183 | ||
0101cc40 RS |
184 | (defcustom vc-initial-comment nil |
185 | "*If non-nil, prompt for initial comment when a file is registered." | |
186 | :type 'boolean | |
187 | :group 'vc) | |
188 | ||
0d53f466 AS |
189 | (defcustom vc-default-init-version "1.1" |
190 | "*A string used as the default version number when a new file is registered. | |
0e362f54 | 191 | This can be overridden by giving a prefix argument to \\[vc-register]." |
0d53f466 | 192 | :type 'string |
cd32a7ba DN |
193 | :group 'vc |
194 | :version "20.3") | |
0d53f466 | 195 | |
0101cc40 RS |
196 | (defcustom vc-command-messages nil |
197 | "*If non-nil, display run messages from back-end commands." | |
198 | :type 'boolean | |
199 | :group 'vc) | |
200 | ||
201 | (defcustom vc-checkin-switches nil | |
202 | "*A string or list of strings specifying extra switches for checkin. | |
203 | These are passed to the checkin program by \\[vc-checkin]." | |
204 | :type '(choice (const :tag "None" nil) | |
205 | (string :tag "Argument String") | |
206 | (repeat :tag "Argument List" | |
207 | :value ("") | |
208 | string)) | |
209 | :group 'vc) | |
210 | ||
211 | (defcustom vc-checkout-switches nil | |
212 | "*A string or list of strings specifying extra switches for checkout. | |
213 | These are passed to the checkout program by \\[vc-checkout]." | |
214 | :type '(choice (const :tag "None" nil) | |
215 | (string :tag "Argument String") | |
216 | (repeat :tag "Argument List" | |
217 | :value ("") | |
218 | string)) | |
219 | :group 'vc) | |
220 | ||
221 | (defcustom vc-register-switches nil | |
222 | "*A string or list of strings; extra switches for registering a file. | |
223 | These are passed to the checkin program by \\[vc-register]." | |
224 | :type '(choice (const :tag "None" nil) | |
225 | (string :tag "Argument String") | |
226 | (repeat :tag "Argument List" | |
227 | :value ("") | |
228 | string)) | |
229 | :group 'vc) | |
230 | ||
0e362f54 GM |
231 | (defcustom vc-dired-listing-switches "-al" |
232 | "*Switches passed to `ls' for vc-dired. MUST contain the `l' option." | |
233 | :type 'string | |
234 | :group 'vc | |
6f41eeb5 | 235 | :version "21.1") |
0e362f54 | 236 | |
3b574573 AS |
237 | (defcustom vc-dired-recurse t |
238 | "*If non-nil, show directory trees recursively in VC Dired." | |
239 | :type 'boolean | |
240 | :group 'vc | |
241 | :version "20.3") | |
242 | ||
243 | (defcustom vc-dired-terse-display t | |
244 | "*If non-nil, show only locked files in VC Dired." | |
245 | :type 'boolean | |
246 | :group 'vc | |
247 | :version "20.3") | |
248 | ||
0101cc40 RS |
249 | (defcustom vc-directory-exclusion-list '("SCCS" "RCS" "CVS") |
250 | "*List of directory names to be ignored while recursively walking file trees." | |
251 | :type '(repeat string) | |
252 | :group 'vc) | |
666a0ebb | 253 | |
8c0aaf40 ER |
254 | (defconst vc-maximum-comment-ring-size 32 |
255 | "Maximum number of saved comments in the comment ring.") | |
256 | ||
2e810285 RS |
257 | ;;; This is duplicated in diff.el. |
258 | (defvar diff-switches "-c" | |
0e362f54 GM |
259 | "*A string or list of strings specifying switches to be passed to diff.") |
260 | ||
261 | ;;;###autoload | |
262 | (defcustom vc-checkin-hook nil | |
263 | "*Normal hook (list of functions) run after a checkin is done. | |
264 | See `run-hooks'." | |
265 | :type 'hook | |
266 | :options '(vc-comment-to-change-log) | |
267 | :group 'vc) | |
268 | ||
269 | ;;;###autoload | |
270 | (defcustom vc-before-checkin-hook nil | |
271 | "*Normal hook (list of functions) run before a file gets checked in. | |
272 | See `run-hooks'." | |
273 | :type 'hook | |
274 | :group 'vc) | |
275 | ||
276 | (defcustom vc-logentry-check-hook nil | |
277 | "*Normal hook run by `vc-backend-logentry-check'. | |
278 | Use this to impose your own rules on the entry in addition to any the | |
279 | version control backend imposes itself." | |
280 | :type 'hook | |
281 | :group 'vc) | |
2e810285 | 282 | |
0e362f54 | 283 | ;; Annotate customization |
7d2d9482 RS |
284 | (defcustom vc-annotate-color-map |
285 | '(( 26.3672 . "#FF0000") | |
286 | ( 52.7344 . "#FF3800") | |
287 | ( 79.1016 . "#FF7000") | |
288 | (105.4688 . "#FFA800") | |
289 | (131.8359 . "#FFE000") | |
290 | (158.2031 . "#E7FF00") | |
291 | (184.5703 . "#AFFF00") | |
292 | (210.9375 . "#77FF00") | |
293 | (237.3047 . "#3FFF00") | |
294 | (263.6719 . "#07FF00") | |
295 | (290.0391 . "#00FF31") | |
296 | (316.4063 . "#00FF69") | |
297 | (342.7734 . "#00FFA1") | |
298 | (369.1406 . "#00FFD9") | |
299 | (395.5078 . "#00EEFF") | |
300 | (421.8750 . "#00B6FF") | |
301 | (448.2422 . "#007EFF")) | |
302 | "*Association list of age versus color, for \\[vc-annotate]. | |
303 | Ages are given in units of 2**-16 seconds. | |
304 | Default is eighteen steps using a twenty day increment." | |
0e362f54 | 305 | :type 'alist |
7d2d9482 RS |
306 | :group 'vc) |
307 | ||
308 | (defcustom vc-annotate-very-old-color "#0046FF" | |
309 | "*Color for lines older than CAR of last cons in `vc-annotate-color-map'." | |
310 | :type 'string | |
311 | :group 'vc) | |
312 | ||
313 | (defcustom vc-annotate-background "black" | |
314 | "*Background color for \\[vc-annotate]. | |
315 | Default color is used if nil." | |
316 | :type 'string | |
317 | :group 'vc) | |
318 | ||
319 | (defcustom vc-annotate-menu-elements '(2 0.5 0.1 0.01) | |
320 | "*Menu elements for the mode-specific menu of VC-Annotate mode. | |
321 | List of factors, used to expand/compress the time scale. See `vc-annotate'." | |
0e362f54 | 322 | :type '(repeat number) |
7d2d9482 RS |
323 | :group 'vc) |
324 | ||
0e362f54 GM |
325 | ;; vc-annotate functionality (CVS only). |
326 | (defvar vc-annotate-mode nil | |
327 | "Variable indicating if VC-Annotate mode is active.") | |
f0b188ed | 328 | |
0e362f54 GM |
329 | (defvar vc-annotate-mode-map |
330 | (let ((m (make-sparse-keymap))) | |
331 | (define-key m [menu-bar] (make-sparse-keymap "VC-Annotate")) | |
332 | m) | |
333 | "Local keymap used for VC-Annotate mode.") | |
67242a23 | 334 | |
0e362f54 GM |
335 | (defvar vc-annotate-mode-menu nil |
336 | "Local keymap used for VC-Annotate mode's menu bar menu.") | |
7d2d9482 | 337 | |
594722a8 ER |
338 | ;; Header-insertion hair |
339 | ||
0101cc40 | 340 | (defcustom vc-static-header-alist |
594722a8 ER |
341 | '(("\\.c$" . |
342 | "\n#ifndef lint\nstatic char vcid[] = \"\%s\";\n#endif /* lint */\n")) | |
0e362f54 GM |
343 | "*Associate static header string templates with file types. |
344 | A \%s in the template is replaced with the first string associated with | |
099bd78a | 345 | the file's version control type in `vc-header-alist'." |
0101cc40 RS |
346 | :type '(repeat (cons :format "%v" |
347 | (regexp :tag "File Type") | |
348 | (string :tag "Header String"))) | |
349 | :group 'vc) | |
7b4f934d | 350 | |
0101cc40 | 351 | (defcustom vc-comment-alist |
594722a8 ER |
352 | '((nroff-mode ".\\\"" "")) |
353 | "*Special comment delimiters to be used in generating vc headers only. | |
099bd78a SM |
354 | Add an entry in this list if you need to override the normal `comment-start' |
355 | and `comment-end' variables. This will only be necessary if the mode language | |
0101cc40 RS |
356 | is sensitive to blank lines." |
357 | :type '(repeat (list :format "%v" | |
358 | (symbol :tag "Mode") | |
359 | (string :tag "Comment Start") | |
360 | (string :tag "Comment End"))) | |
361 | :group 'vc) | |
594722a8 | 362 | |
bbf97570 | 363 | ;; Default is to be extra careful for super-user. |
6f41eeb5 DL |
364 | ;; TODO: This variable is no longer used; the corresponding checks |
365 | ;; are always done now. If that turns out to be fast enough, | |
0e362f54 | 366 | ;; the variable can be obsoleted. |
0101cc40 | 367 | (defcustom vc-checkout-carefully (= (user-uid) 0) |
bbf97570 RS |
368 | "*Non-nil means be extra-careful in checkout. |
369 | Verify that the file really is not locked | |
0101cc40 RS |
370 | and that its contents match what the master file says." |
371 | :type 'boolean | |
372 | :group 'vc) | |
bbf97570 | 373 | |
0e362f54 GM |
374 | \f |
375 | ;;; The main keymap | |
376 | ||
377 | (defvar vc-prefix-map | |
378 | (let ((map (make-sparse-keymap))) | |
379 | (define-key map "a" 'vc-update-change-log) | |
1d502d5a | 380 | (define-key map "b" 'vc-switch-backend) |
0e362f54 GM |
381 | (define-key map "c" 'vc-cancel-version) |
382 | (define-key map "d" 'vc-directory) | |
383 | (define-key map "g" 'vc-annotate) | |
384 | (define-key map "h" 'vc-insert-headers) | |
385 | (define-key map "i" 'vc-register) | |
386 | (define-key map "l" 'vc-print-log) | |
387 | (define-key map "m" 'vc-merge) | |
388 | (define-key map "r" 'vc-retrieve-snapshot) | |
389 | (define-key map "s" 'vc-create-snapshot) | |
390 | (define-key map "u" 'vc-revert-buffer) | |
391 | (define-key map "v" 'vc-next-action) | |
392 | (define-key map "=" 'vc-diff) | |
393 | (define-key map "~" 'vc-version-other-window) | |
394 | map)) | |
395 | (fset 'vc-prefix-map vc-prefix-map) | |
b0c9bc8c | 396 | |
0e362f54 GM |
397 | ;; Initialization code, to be done just once at load-time |
398 | (defvar vc-log-mode-map | |
399 | (let ((map (make-sparse-keymap))) | |
400 | (define-key map "\M-n" 'vc-next-comment) | |
401 | (define-key map "\M-p" 'vc-previous-comment) | |
402 | (define-key map "\M-r" 'vc-comment-search-reverse) | |
403 | (define-key map "\M-s" 'vc-comment-search-forward) | |
404 | (define-key map "\C-c\C-c" 'vc-finish-logentry) | |
405 | map)) | |
406 | ;; Compatibility with old name. Should we bother ? | |
407 | (defvar vc-log-entry-mode vc-log-mode-map) | |
b0c9bc8c | 408 | |
0e362f54 | 409 | \f |
594722a8 | 410 | ;; Variables the user doesn't need to know about. |
594722a8 | 411 | (defvar vc-log-operation nil) |
67242a23 | 412 | (defvar vc-log-after-operation-hook nil) |
0e362f54 | 413 | (defvar vc-annotate-buffers nil |
099bd78a SM |
414 | "Alist of current \"Annotate\" buffers and their corresponding backends. |
415 | The keys are \(BUFFER . BACKEND\). See also `vc-annotate-get-backend'.") | |
dbf87856 RS |
416 | ;; In a log entry buffer, this is a local variable |
417 | ;; that points to the buffer for which it was made | |
418 | ;; (either a file, or a VC dired buffer). | |
1a2f456b | 419 | (defvar vc-parent-buffer nil) |
0e362f54 | 420 | (put 'vc-parent-buffer 'permanent-local t) |
8c0aaf40 | 421 | (defvar vc-parent-buffer-name nil) |
0e362f54 | 422 | (put 'vc-parent-buffer-name 'permanent-local t) |
594722a8 | 423 | |
db59472c RS |
424 | (defvar vc-log-file) |
425 | (defvar vc-log-version) | |
426 | ||
8c0aaf40 | 427 | (defvar vc-dired-mode nil) |
e1f297e6 ER |
428 | (make-variable-buffer-local 'vc-dired-mode) |
429 | ||
c9b35ece | 430 | (defvar vc-comment-ring (make-ring vc-maximum-comment-ring-size)) |
8c0aaf40 | 431 | (defvar vc-comment-ring-index nil) |
0e362f54 | 432 | (defvar vc-last-comment-match "") |
c8de1d91 | 433 | |
0e362f54 GM |
434 | ;;; functions that operate on RCS revision numbers. This code should |
435 | ;;; also be moved into the backends. It stays for now, however, since | |
436 | ;;; it is used in code below. | |
c8de1d91 | 437 | (defun vc-trunk-p (rev) |
099bd78a | 438 | "Return t if REV is a revision on the trunk." |
c8de1d91 AS |
439 | (not (eq nil (string-match "\\`[0-9]+\\.[0-9]+\\'" rev)))) |
440 | ||
ccb141e8 | 441 | (defun vc-branch-p (rev) |
099bd78a | 442 | "Return t if REV is a branch revision." |
ccb141e8 AS |
443 | (not (eq nil (string-match "\\`[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*\\'" rev)))) |
444 | ||
c8de1d91 | 445 | (defun vc-branch-part (rev) |
099bd78a | 446 | "Return the branch part of a revision number REV." |
c8de1d91 AS |
447 | (substring rev 0 (string-match "\\.[0-9]+\\'" rev))) |
448 | ||
c0d66cb2 | 449 | (defun vc-minor-part (rev) |
099bd78a | 450 | "Return the minor version number of a revision number REV." |
c0d66cb2 RS |
451 | (string-match "[0-9]+\\'" rev) |
452 | (substring rev (match-beginning 0) (match-end 0))) | |
453 | ||
454 | (defun vc-previous-version (rev) | |
099bd78a | 455 | "Guess the version number immediately preceding REV." |
c0d66cb2 RS |
456 | (let ((branch (vc-branch-part rev)) |
457 | (minor-num (string-to-number (vc-minor-part rev)))) | |
458 | (if (> minor-num 1) | |
459 | ;; version does probably not start a branch or release | |
460 | (concat branch "." (number-to-string (1- minor-num))) | |
461 | (if (vc-trunk-p rev) | |
462 | ;; we are at the beginning of the trunk -- | |
463 | ;; don't know anything to return here | |
464 | "" | |
465 | ;; we are at the beginning of a branch -- | |
466 | ;; return version of starting point | |
467 | (vc-branch-part branch))))) | |
468 | ||
594722a8 ER |
469 | ;; File property caching |
470 | ||
8c0aaf40 ER |
471 | (defun vc-clear-context () |
472 | "Clear all cached file properties and the comment ring." | |
473 | (interactive) | |
474 | (fillarray vc-file-prop-obarray nil) | |
475 | ;; Note: there is potential for minor lossage here if there is an open | |
476 | ;; log buffer with a nonzero local value of vc-comment-ring-index. | |
c9b35ece | 477 | (setq vc-comment-ring (make-ring vc-maximum-comment-ring-size))) |
8c0aaf40 | 478 | |
099bd78a SM |
479 | (defmacro with-vc-properties (file form settings) |
480 | "Execute FORM, then set per-file properties for FILE, but only those | |
481 | that have not been set during the execution of FORM. SETTINGS is a list | |
482 | of two-element lists, each of which has the form (PROPERTY VALUE)." | |
483 | `(let ((vc-touched-properties (list t)) | |
484 | (filename ,file)) | |
485 | ,form | |
486 | (mapcar (lambda (setting) | |
487 | (let ((property (nth 0 setting)) | |
488 | (value (nth 1 setting))) | |
489 | (unless (memq property vc-touched-properties) | |
490 | (put (intern filename vc-file-prop-obarray) | |
491 | property value)))) | |
492 | ,settings))) | |
493 | ||
594722a8 ER |
494 | ;; Random helper functions |
495 | ||
0e362f54 GM |
496 | (defsubst vc-editable-p (file) |
497 | (or (eq (vc-checkout-model file) 'implicit) | |
7849e179 | 498 | (memq (vc-state file) '(edited needs-merge)))) |
c8de1d91 | 499 | |
709822e8 AS |
500 | ;;; Two macros for elisp programming |
501 | ;;;###autoload | |
502 | (defmacro with-vc-file (file comment &rest body) | |
0e362f54 GM |
503 | "Check out a writable copy of FILE if necessary and execute the body. |
504 | Check in FILE with COMMENT (a string) after BODY has been executed. | |
505 | FILE is passed through `expand-file-name'; BODY executed within | |
506 | `save-excursion'. If FILE is not under version control, or locked by | |
709822e8 AS |
507 | somebody else, signal error." |
508 | `(let ((file (expand-file-name ,file))) | |
ceec5a0c | 509 | (or (vc-backend file) |
709822e8 | 510 | (error (format "File not under version control: `%s'" file))) |
0e362f54 GM |
511 | (unless (vc-editable-p file) |
512 | (let ((state (vc-state file))) | |
513 | (if (stringp state) (error (format "`%s' is locking `%s'" state file)) | |
514 | (vc-checkout file t)))) | |
709822e8 AS |
515 | (save-excursion |
516 | ,@body) | |
517 | (vc-checkin file nil ,comment))) | |
518 | ||
519 | ;;;###autoload | |
520 | (defmacro edit-vc-file (file comment &rest body) | |
0e362f54 GM |
521 | "Edit FILE under version control, executing body. |
522 | Checkin with COMMENT after executing BODY. | |
709822e8 AS |
523 | This macro uses `with-vc-file', passing args to it. |
524 | However, before executing BODY, find FILE, and after BODY, save buffer." | |
525 | `(with-vc-file | |
526 | ,file ,comment | |
7849e179 | 527 | (set-buffer (find-file-noselect ,file)) |
709822e8 AS |
528 | ,@body |
529 | (save-buffer))) | |
530 | ||
b6909007 | 531 | (defun vc-ensure-vc-buffer () |
099bd78a | 532 | "Make sure that the current buffer visits a version-controlled file." |
b6909007 AS |
533 | (if vc-dired-mode |
534 | (set-buffer (find-file-noselect (dired-get-filename))) | |
535 | (while vc-parent-buffer | |
536 | (pop-to-buffer vc-parent-buffer)) | |
537 | (if (not (buffer-file-name)) | |
538 | (error "Buffer %s is not associated with a file" (buffer-name)) | |
539 | (if (not (vc-backend (buffer-file-name))) | |
540 | (error "File %s is not under version control" (buffer-file-name)))))) | |
7ef84cf9 | 541 | |
594722a8 | 542 | (defvar vc-binary-assoc nil) |
87a00c4f EZ |
543 | (defvar vc-binary-suffixes |
544 | (if (memq system-type '(ms-dos windows-nt)) | |
545 | '(".exe" ".com" ".bat" ".cmd" ".btm" "") | |
546 | '(""))) | |
0e362f54 GM |
547 | |
548 | (defun vc-process-filter (p s) | |
099bd78a | 549 | "An alternative output filter for async process P. |
0e362f54 GM |
550 | The only difference with the default filter is to insert S after markers." |
551 | (with-current-buffer (process-buffer p) | |
552 | (save-excursion | |
553 | (let ((inhibit-read-only t)) | |
554 | (goto-char (process-mark p)) | |
555 | (insert s) | |
556 | (set-marker (process-mark p) (point)))))) | |
557 | ||
558 | (defun vc-setup-buffer (&optional buf) | |
099bd78a | 559 | "Prepare BUF for executing a VC command and make it the current buffer. |
0e362f54 GM |
560 | BUF defaults to \"*vc*\", can be a string and will be created if necessary." |
561 | (unless buf (setq buf "*vc*")) | |
562 | (let ((camefrom (current-buffer)) | |
563 | (olddir default-directory)) | |
564 | (set-buffer (get-buffer-create buf)) | |
565 | (kill-all-local-variables) | |
566 | (set (make-local-variable 'vc-parent-buffer) camefrom) | |
567 | (set (make-local-variable 'vc-parent-buffer-name) | |
568 | (concat " from " (buffer-name camefrom))) | |
569 | (setq default-directory olddir) | |
570 | (let ((inhibit-read-only t)) | |
571 | (erase-buffer)))) | |
572 | ||
573 | (defun vc-exec-after (code) | |
574 | "Eval CODE when the current buffer's process is done. | |
575 | If the current buffer has no process, just evaluate CODE. | |
576 | Else, add CODE to the process' sentinel." | |
577 | (let ((proc (get-buffer-process (current-buffer)))) | |
578 | (cond | |
579 | ;; If there's no background process, just execute the code. | |
580 | ((null proc) (eval code)) | |
581 | ;; If the background process has exited, reap it and try again | |
582 | ((eq (process-status proc) 'exit) | |
583 | (delete-process proc) | |
584 | (vc-exec-after code)) | |
585 | ;; If a process is running, add CODE to the sentinel | |
586 | ((eq (process-status proc) 'run) | |
587 | (let ((sentinel (process-sentinel proc))) | |
588 | (set-process-sentinel proc | |
589 | `(lambda (p s) | |
590 | (with-current-buffer ',(current-buffer) | |
591 | (goto-char (process-mark p)) | |
6f41eeb5 | 592 | ,@(append (cdr (cdr (cdr ;strip off `with-current-buffer buf |
0e362f54 GM |
593 | ; (goto-char...)' |
594 | (car (cdr (cdr ;strip off `lambda (p s)' | |
595 | sentinel)))))) | |
596 | (list `(vc-exec-after ',code)))))))) | |
597 | (t (error "Unexpected process state")))) | |
598 | nil) | |
599 | ||
600 | (defvar vc-post-command-functions nil | |
601 | "Hook run at the end of `vc-do-command'. | |
602 | Each function is called inside the buffer in which the command was run | |
603 | and is passed 3 argument: the COMMAND, the FILE and the FLAGS.") | |
604 | ||
605 | (defun vc-do-command (buffer okstatus command file &rest flags) | |
099bd78a | 606 | "Execute a version control command, notifying user and checking for errors. |
0e362f54 GM |
607 | Output from COMMAND goes to BUFFER, or *vc* if BUFFER is nil or the current |
608 | buffer (which is assumed to be properly setup) if BUFFER is t. The | |
a0b87bc1 | 609 | command is considered successful if its exit status does not exceed |
0e362f54 GM |
610 | OKSTATUS (if OKSTATUS is nil, that means to ignore errors, if it is 'async, |
611 | that means not to wait for termination of the subprocess). FILE is | |
a0b87bc1 | 612 | the name of the working file (may also be nil, to execute commands |
6f41eeb5 | 613 | that don't expect a file name). If an optional list of FLAGS is present, |
0e362f54 | 614 | that is inserted into the command line before the filename." |
b0c9bc8c | 615 | (and file (setq file (expand-file-name file))) |
594722a8 | 616 | (if vc-command-messages |
02da6253 | 617 | (message "Running %s on %s..." command file)) |
0e362f54 GM |
618 | (save-current-buffer |
619 | (unless (eq buffer t) (vc-setup-buffer buffer)) | |
620 | (let ((squeezed nil) | |
621 | (inhibit-read-only t) | |
622 | (status 0)) | |
623 | (setq squeezed (delq nil (copy-sequence flags))) | |
624 | (when file | |
625 | ;; FIXME: file-relative-name can return a bogus result because | |
626 | ;; it doesn't look at the actual file-system to see if symlinks | |
627 | ;; come into play. | |
628 | (setq squeezed (append squeezed (list (file-relative-name file))))) | |
629 | (let ((exec-path (append vc-path exec-path)) | |
630 | ;; Add vc-path to PATH for the execution of this command. | |
631 | (process-environment | |
632 | (cons (concat "PATH=" (getenv "PATH") | |
633 | path-separator | |
634 | (mapconcat 'identity vc-path path-separator)) | |
635 | process-environment)) | |
636 | (w32-quote-process-args t)) | |
637 | (if (eq okstatus 'async) | |
638 | (let ((proc (apply 'start-process command (current-buffer) command | |
639 | squeezed))) | |
640 | (message "Running %s in the background..." command) | |
641 | ;;(set-process-sentinel proc (lambda (p msg) (delete-process p))) | |
642 | (set-process-filter proc 'vc-process-filter) | |
643 | (vc-exec-after | |
644 | `(message "Running %s in the background... done" ',command))) | |
645 | (setq status (apply 'call-process command nil t nil squeezed)) | |
646 | (when (or (not (integerp status)) (and okstatus (< okstatus status))) | |
647 | (pop-to-buffer (current-buffer)) | |
648 | (goto-char (point-min)) | |
649 | (shrink-window-if-larger-than-buffer) | |
650 | (error "Running %s...FAILED (%s)" command | |
651 | (if (integerp status) (format "status %d" status) status)))) | |
652 | (if vc-command-messages | |
653 | (message "Running %s...OK" command))) | |
654 | (vc-exec-after | |
655 | `(run-hook-with-args 'vc-post-command-functions ',command ',file ',flags)) | |
656 | status))) | |
594722a8 | 657 | |
c4ae7096 | 658 | (defun vc-position-context (posn) |
099bd78a SM |
659 | "Save a bit of the text around POSN in the current buffer. |
660 | Used to help us find the corresponding position again later | |
661 | if markers are destroyed or corrupted." | |
0e362f54 GM |
662 | ;; A lot of this was shamelessly lifted from Sebastian Kremer's |
663 | ;; rcs.el mode. | |
c4ae7096 JB |
664 | (list posn |
665 | (buffer-size) | |
666 | (buffer-substring posn | |
667 | (min (point-max) (+ posn 100))))) | |
668 | ||
c4ae7096 | 669 | (defun vc-find-position-by-context (context) |
099bd78a | 670 | "Return the position of CONTEXT in the current buffer, or nil if not found." |
c4ae7096 JB |
671 | (let ((context-string (nth 2 context))) |
672 | (if (equal "" context-string) | |
673 | (point-max) | |
674 | (save-excursion | |
675 | (let ((diff (- (nth 1 context) (buffer-size)))) | |
676 | (if (< diff 0) (setq diff (- diff))) | |
677 | (goto-char (nth 0 context)) | |
678 | (if (or (search-forward context-string nil t) | |
679 | ;; Can't use search-backward since the match may continue | |
680 | ;; after point. | |
681 | (progn (goto-char (- (point) diff (length context-string))) | |
682 | ;; goto-char doesn't signal an error at | |
683 | ;; beginning of buffer like backward-char would | |
684 | (search-forward context-string nil t))) | |
685 | ;; to beginning of OSTRING | |
686 | (- (point) (length context-string)))))))) | |
687 | ||
4b398f5d | 688 | (defun vc-context-matches-p (posn context) |
099bd78a | 689 | "Return t if POSN matches CONTEXT, nil otherwise." |
4b398f5d AS |
690 | (let* ((context-string (nth 2 context)) |
691 | (len (length context-string)) | |
692 | (end (+ posn len))) | |
693 | (if (> end (1+ (buffer-size))) | |
694 | nil | |
695 | (string= context-string (buffer-substring posn end))))) | |
696 | ||
c8de1d91 | 697 | (defun vc-buffer-context () |
099bd78a SM |
698 | "Return a list (POINT-CONTEXT MARK-CONTEXT REPARSE). |
699 | Used by `vc-restore-buffer-context' to later restore the context." | |
c4ae7096 | 700 | (let ((point-context (vc-position-context (point))) |
cfadef63 RS |
701 | ;; Use mark-marker to avoid confusion in transient-mark-mode. |
702 | (mark-context (if (eq (marker-buffer (mark-marker)) (current-buffer)) | |
703 | (vc-position-context (mark-marker)))) | |
704 | ;; Make the right thing happen in transient-mark-mode. | |
ab877583 RM |
705 | (mark-active nil) |
706 | ;; We may want to reparse the compilation buffer after revert | |
707 | (reparse (and (boundp 'compilation-error-list) ;compile loaded | |
708 | (let ((curbuf (current-buffer))) | |
709 | ;; Construct a list; each elt is nil or a buffer | |
710 | ;; iff that buffer is a compilation output buffer | |
711 | ;; that contains markers into the current buffer. | |
712 | (save-excursion | |
0e362f54 | 713 | (mapcar (lambda (buffer) |
ab877583 RM |
714 | (set-buffer buffer) |
715 | (let ((errors (or | |
716 | compilation-old-error-list | |
717 | compilation-error-list)) | |
718 | (buffer-error-marked-p nil)) | |
6fb6ab11 | 719 | (while (and (consp errors) |
ab877583 | 720 | (not buffer-error-marked-p)) |
a1bda481 | 721 | (and (markerp (cdr (car errors))) |
e9c8e248 RM |
722 | (eq buffer |
723 | (marker-buffer | |
a1bda481 | 724 | (cdr (car errors)))) |
e9c8e248 | 725 | (setq buffer-error-marked-p t)) |
ab877583 | 726 | (setq errors (cdr errors))) |
0e362f54 | 727 | (if buffer-error-marked-p buffer))) |
ab877583 | 728 | (buffer-list))))))) |
c8de1d91 AS |
729 | (list point-context mark-context reparse))) |
730 | ||
731 | (defun vc-restore-buffer-context (context) | |
0e362f54 | 732 | "Restore point/mark, and reparse any affected compilation buffers. |
099bd78a | 733 | CONTEXT is that which `vc-buffer-context' returns." |
c8de1d91 AS |
734 | (let ((point-context (nth 0 context)) |
735 | (mark-context (nth 1 context)) | |
736 | (reparse (nth 2 context))) | |
ab877583 RM |
737 | ;; Reparse affected compilation buffers. |
738 | (while reparse | |
739 | (if (car reparse) | |
0e362f54 | 740 | (with-current-buffer (car reparse) |
ab877583 RM |
741 | (let ((compilation-last-buffer (current-buffer)) ;select buffer |
742 | ;; Record the position in the compilation buffer of | |
743 | ;; the last error next-error went to. | |
744 | (error-pos (marker-position | |
745 | (car (car-safe compilation-error-list))))) | |
746 | ;; Reparse the error messages as far as they were parsed before. | |
747 | (compile-reinitialize-errors '(4) compilation-parsing-end) | |
748 | ;; Move the pointer up to find the error we were at before | |
749 | ;; reparsing. Now next-error should properly go to the next one. | |
750 | (while (and compilation-error-list | |
27f2f10b | 751 | (/= error-pos (car (car compilation-error-list)))) |
ab877583 RM |
752 | (setq compilation-error-list (cdr compilation-error-list)))))) |
753 | (setq reparse (cdr reparse))) | |
e1f297e6 | 754 | |
4b398f5d AS |
755 | ;; if necessary, restore point and mark |
756 | (if (not (vc-context-matches-p (point) point-context)) | |
757 | (let ((new-point (vc-find-position-by-context point-context))) | |
758 | (if new-point (goto-char new-point)))) | |
01e02ab3 AS |
759 | (and mark-active |
760 | mark-context | |
761 | (not (vc-context-matches-p (mark) mark-context)) | |
762 | (let ((new-mark (vc-find-position-by-context mark-context))) | |
763 | (if new-mark (set-mark new-mark)))))) | |
c4ae7096 | 764 | |
c8de1d91 | 765 | (defun vc-revert-buffer1 (&optional arg no-confirm) |
099bd78a SM |
766 | "Revert buffer, trying to keep point and mark where user expects them. |
767 | Tries to be clever in the face of changes due to expanded version control | |
768 | key words. This is important for typeahead to work as expected. | |
769 | ARG and NO-CONFIRM are passed on to `revert-buffer'." | |
c8de1d91 AS |
770 | (interactive "P") |
771 | (widen) | |
772 | (let ((context (vc-buffer-context))) | |
4b398f5d AS |
773 | ;; Use save-excursion here, because it may be able to restore point |
774 | ;; and mark properly even in cases where vc-restore-buffer-context | |
0e362f54 | 775 | ;; would fail. However, save-excursion might also get it wrong -- |
4b398f5d AS |
776 | ;; in this case, vc-restore-buffer-context gives it a second try. |
777 | (save-excursion | |
0e362f54 | 778 | ;; t means don't call normal-mode; |
4b398f5d AS |
779 | ;; that's to preserve various minor modes. |
780 | (revert-buffer arg no-confirm t)) | |
c8de1d91 AS |
781 | (vc-restore-buffer-context context))) |
782 | ||
594722a8 | 783 | |
97d3f950 | 784 | (defun vc-buffer-sync (&optional not-urgent) |
099bd78a | 785 | "Make sure the current buffer and its working file are in sync. |
0e362f54 | 786 | NOT-URGENT means it is ok to continue if the user says not to save." |
bbf97570 | 787 | (if (buffer-modified-p) |
97d3f950 RS |
788 | (if (or vc-suppress-confirm |
789 | (y-or-n-p (format "Buffer %s modified; save it? " (buffer-name)))) | |
790 | (save-buffer) | |
0e362f54 | 791 | (unless not-urgent |
97d3f950 RS |
792 | (error "Aborted"))))) |
793 | ||
0e362f54 | 794 | (defun vc-workfile-unchanged-p (file) |
099bd78a | 795 | "Has FILE changed since last checkout?" |
594722a8 | 796 | (let ((checkout-time (vc-file-getprop file 'vc-checkout-time)) |
0e362f54 GM |
797 | (lastmod (nth 5 (file-attributes file)))) |
798 | (if checkout-time | |
799 | (equal checkout-time lastmod) | |
800 | (let ((unchanged (vc-call workfile-unchanged-p file))) | |
801 | (vc-file-setprop file 'vc-checkout-time (if unchanged lastmod 0)) | |
802 | unchanged)))) | |
803 | ||
804 | (defun vc-default-workfile-unchanged-p (file) | |
099bd78a | 805 | "Default check whether FILE is unchanged: diff against master version." |
0e362f54 | 806 | (zerop (vc-call diff file (vc-workfile-version file)))) |
594722a8 | 807 | |
0e362f54 GM |
808 | (defun vc-recompute-state (file) |
809 | "Force a recomputation of the version control state of FILE. | |
810 | The state is computed using the exact, and possibly expensive | |
811 | function `vc-BACKEND-state', not the heuristic." | |
812 | (vc-file-setprop file 'vc-state (vc-call state file))) | |
e1f297e6 | 813 | |
0e362f54 GM |
814 | (defun vc-next-action-on-file (file verbose &optional comment) |
815 | "Do The Right Thing for a given version-controlled FILE. | |
816 | If COMMENT is specified, it will be used as an admin or checkin comment. | |
817 | If VERBOSE is non-nil, query the user rather than using default parameters." | |
818 | (let ((visited (get-file-buffer file)) | |
819 | state version) | |
820 | (when visited | |
821 | ;; Check relation of buffer and file, and make sure | |
822 | ;; user knows what he's doing. First, finding the file | |
823 | ;; will check whether the file on disk is newer. | |
824 | (if vc-dired-mode | |
825 | (find-file-other-window file) | |
7849e179 | 826 | (set-buffer (find-file-noselect file))) |
0e362f54 GM |
827 | (if (not (verify-visited-file-modtime (current-buffer))) |
828 | (if (yes-or-no-p "Replace file on disk with buffer contents? ") | |
829 | (write-file (buffer-file-name)) | |
830 | (error "Aborted")) | |
831 | ;; Now, check if we have unsaved changes. | |
832 | (vc-buffer-sync t) | |
833 | (if (buffer-modified-p) | |
834 | (or (y-or-n-p "Operate on disk file, keeping modified buffer? ") | |
835 | (error "Aborted"))))) | |
836 | ||
837 | ;; Do the right thing | |
8989ab56 | 838 | (if (not (vc-registered file)) |
0e362f54 GM |
839 | (vc-register verbose comment) |
840 | (vc-recompute-state file) | |
0ab66291 | 841 | (if visited (vc-mode-line file)) |
0e362f54 GM |
842 | (setq state (vc-state file)) |
843 | (cond | |
844 | ;; up-to-date | |
845 | ((or (eq state 'up-to-date) | |
846 | (and verbose (eq state 'needs-patch))) | |
847 | (cond | |
848 | (verbose | |
849 | ;; go to a different version | |
ceec5a0c | 850 | (setq version |
1d502d5a | 851 | (read-string "Branch, version, or backend to move to: ")) |
ceec5a0c | 852 | (let ((vsym (intern-soft (upcase version)))) |
1d502d5a AS |
853 | (if (member vsym vc-handled-backends) |
854 | (vc-transfer-file file vsym) | |
ceec5a0c | 855 | (vc-checkout file (eq (vc-checkout-model file) 'implicit) |
1d502d5a | 856 | version)))) |
0e362f54 GM |
857 | ((not (eq (vc-checkout-model file) 'implicit)) |
858 | ;; check the file out | |
859 | (vc-checkout file t)) | |
860 | (t | |
861 | ;; do nothing | |
862 | (message "%s is up-to-date" file)))) | |
863 | ||
864 | ;; Abnormal: edited but read-only | |
865 | ((and visited (eq state 'edited) buffer-read-only) | |
866 | ;; Make the file+buffer read-write. If the user really wanted to | |
867 | ;; commit, he'll get a chance to do that next time around, anyway. | |
868 | (message "File is edited but read-only; making it writable") | |
869 | (set-file-modes buffer-file-name | |
870 | (logior (file-modes buffer-file-name) 128)) | |
871 | (toggle-read-only -1)) | |
872 | ||
873 | ;; edited | |
874 | ((eq state 'edited) | |
6f41eeb5 | 875 | (cond |
0e362f54 GM |
876 | ;; For files with locking, if the file does not contain |
877 | ;; any changes, just let go of the lock, i.e. revert. | |
878 | ((and (not (eq (vc-checkout-model file) 'implicit)) | |
879 | (vc-workfile-unchanged-p file) | |
880 | ;; If buffer is modified, that means the user just | |
881 | ;; said no to saving it; in that case, don't revert, | |
882 | ;; because the user might intend to save after | |
883 | ;; finishing the log entry. | |
884 | (not (and visited (buffer-modified-p)))) | |
885 | ;; DO NOT revert the file without asking the user! | |
886 | (if (not visited) (find-file-other-window file)) | |
887 | (if (yes-or-no-p "Revert to master version? ") | |
888 | (vc-revert-buffer))) | |
889 | (t ;; normal action | |
1d502d5a AS |
890 | (if (not verbose) |
891 | (vc-checkin file nil comment) | |
892 | (setq version (read-string "New version or backend: ")) | |
893 | (let ((vsym (intern (upcase version)))) | |
894 | (if (member vsym vc-handled-backends) | |
895 | (vc-transfer-file file vsym) | |
896 | (vc-checkin file version comment))))))) | |
0e362f54 GM |
897 | |
898 | ;; locked by somebody else | |
899 | ((stringp state) | |
900 | (if comment | |
901 | (error "Sorry, you can't steal the lock on %s this way" | |
902 | (file-name-nondirectory file))) | |
903 | (vc-steal-lock file | |
904 | (if verbose (read-string "Version to steal: ") | |
905 | (vc-workfile-version file)) | |
906 | state)) | |
907 | ||
908 | ;; needs-patch | |
909 | ((eq state 'needs-patch) | |
6f41eeb5 | 910 | (if (yes-or-no-p (format |
0e362f54 GM |
911 | "%s is not up-to-date. Get latest version? " |
912 | (file-name-nondirectory file))) | |
913 | (vc-checkout file (eq (vc-checkout-model file) 'implicit) "") | |
914 | (if (and (not (eq (vc-checkout-model file) 'implicit)) | |
915 | (yes-or-no-p "Lock this version? ")) | |
916 | (vc-checkout file t) | |
917 | (error "Aborted")))) | |
918 | ||
919 | ;; needs-merge | |
920 | ((eq state 'needs-merge) | |
6f41eeb5 | 921 | (if (yes-or-no-p (format |
0e362f54 GM |
922 | "%s is not up-to-date. Merge in changes now? " |
923 | (file-name-nondirectory file))) | |
924 | (vc-maybe-resolve-conflicts file (vc-call merge-news file)) | |
925 | (error "Aborted"))) | |
926 | ||
927 | ;; unlocked-changes | |
928 | ((eq state 'unlocked-changes) | |
929 | (if (not visited) (find-file-other-window file)) | |
930 | (if (save-window-excursion | |
931 | (vc-version-diff file (vc-workfile-version file) nil) | |
932 | (goto-char (point-min)) | |
ceec5a0c SM |
933 | (let ((inhibit-read-only t)) |
934 | (insert-string | |
935 | (format "Changes to %s since last lock:\n\n" file))) | |
0e362f54 GM |
936 | (not (beep)) |
937 | (yes-or-no-p (concat "File has unlocked changes. " | |
938 | "Claim lock retaining changes? "))) | |
939 | (progn (vc-call steal-lock file) | |
940 | ;; Must clear any headers here because they wouldn't | |
941 | ;; show that the file is locked now. | |
942 | (vc-clear-headers file) | |
943 | (vc-mode-line file)) | |
944 | (if (not (yes-or-no-p | |
945 | "Revert to checked-in version, instead? ")) | |
946 | (error "Checkout aborted") | |
947 | (vc-revert-buffer1 t t) | |
948 | (vc-checkout file t)))))))) | |
e1f297e6 | 949 | |
beba4bd9 AS |
950 | (defvar vc-dired-window-configuration) |
951 | ||
e1f297e6 | 952 | (defun vc-next-action-dired (file rev comment) |
099bd78a SM |
953 | "Call `vc-next-action-on-file' on all the marked files. |
954 | Ignores FILE and REV, but passes on COMMENT." | |
3d30b8bc | 955 | (let ((dired-buffer (current-buffer)) |
8dd71345 | 956 | (dired-dir default-directory)) |
632e9525 | 957 | (dired-map-over-marks |
3b574573 | 958 | (let ((file (dired-get-filename))) |
b0c9bc8c | 959 | (message "Processing %s..." file) |
0e362f54 GM |
960 | (vc-next-action-on-file file nil comment) |
961 | (set-buffer dired-buffer) | |
3d30b8bc | 962 | (set-window-configuration vc-dired-window-configuration) |
b0c9bc8c | 963 | (message "Processing %s...done" file)) |
3d30b8bc RS |
964 | nil t)) |
965 | (dired-move-to-filename)) | |
e1f297e6 | 966 | |
637a8ae9 | 967 | ;; Here's the major entry point. |
594722a8 | 968 | |
637a8ae9 | 969 | ;;;###autoload |
594722a8 ER |
970 | (defun vc-next-action (verbose) |
971 | "Do the next logical checkin or checkout operation on the current file. | |
0e362f54 GM |
972 | |
973 | If you call this from within a VC dired buffer with no files marked, | |
c6d4f628 | 974 | it will operate on the file in the current line. |
0e362f54 GM |
975 | |
976 | If you call this from within a VC dired buffer, and one or more | |
c6d4f628 RS |
977 | files are marked, it will accept a log message and then operate on |
978 | each one. The log message will be used as a comment for any register | |
979 | or checkin operations, but ignored when doing checkouts. Attempted | |
980 | lock steals will raise an error. | |
0e362f54 GM |
981 | |
982 | A prefix argument lets you specify the version number to use. | |
80688f5c RS |
983 | |
984 | For RCS and SCCS files: | |
594722a8 | 985 | If the file is not already registered, this registers it for version |
4b81132c | 986 | control. |
594722a8 | 987 | If the file is registered and not locked by anyone, this checks out |
34291cd2 | 988 | a writable and locked file ready for editing. |
594722a8 ER |
989 | If the file is checked out and locked by the calling user, this |
990 | first checks to see if the file has changed since checkout. If not, | |
991 | it performs a revert. | |
e1f297e6 ER |
992 | If the file has been changed, this pops up a buffer for entry |
993 | of a log message; when the message has been entered, it checks in the | |
594722a8 | 994 | resulting changes along with the log message as change commentary. If |
34291cd2 | 995 | the variable `vc-keep-workfiles' is non-nil (which is its default), a |
594722a8 ER |
996 | read-only copy of the changed file is left in place afterwards. |
997 | If the file is registered and locked by someone else, you are given | |
e1f297e6 | 998 | the option to steal the lock. |
80688f5c RS |
999 | |
1000 | For CVS files: | |
1001 | If the file is not already registered, this registers it for version | |
1002 | control. This does a \"cvs add\", but no \"cvs commit\". | |
1003 | If the file is added but not committed, it is committed. | |
80688f5c RS |
1004 | If your working file is changed, but the repository file is |
1005 | unchanged, this pops up a buffer for entry of a log message; when the | |
1006 | message has been entered, it checks in the resulting changes along | |
1007 | with the logmessage as change commentary. A writable file is retained. | |
1008 | If the repository file is changed, you are asked if you want to | |
c6d4f628 | 1009 | merge in the changes into your working copy." |
bbf97570 | 1010 | |
594722a8 | 1011 | (interactive "P") |
8c0aaf40 ER |
1012 | (catch 'nogo |
1013 | (if vc-dired-mode | |
1014 | (let ((files (dired-get-marked-files))) | |
3d30b8bc RS |
1015 | (set (make-local-variable 'vc-dired-window-configuration) |
1016 | (current-window-configuration)) | |
0e362f54 | 1017 | (if (string= "" |
8dd71345 | 1018 | (mapconcat |
0e362f54 GM |
1019 | (lambda (f) |
1020 | (if (not (vc-up-to-date-p f)) "@" "")) | |
b0c9bc8c AS |
1021 | files "")) |
1022 | (vc-next-action-dired nil nil "dummy") | |
0ab66291 | 1023 | (vc-start-entry nil nil nil nil |
b0c9bc8c AS |
1024 | "Enter a change comment for the marked files." |
1025 | 'vc-next-action-dired)) | |
8dd71345 | 1026 | (throw 'nogo nil))) |
dc08a6b5 AS |
1027 | (while vc-parent-buffer |
1028 | (pop-to-buffer vc-parent-buffer)) | |
1029 | (if buffer-file-name | |
1030 | (vc-next-action-on-file buffer-file-name verbose) | |
1031 | (error "Buffer %s is not associated with a file" (buffer-name))))) | |
594722a8 ER |
1032 | |
1033 | ;;; These functions help the vc-next-action entry point | |
1034 | ||
637a8ae9 | 1035 | ;;;###autoload |
0e362f54 | 1036 | (defun vc-register (&optional set-version comment) |
099bd78a | 1037 | "Register the current file into a version control system. |
e1d95cc4 | 1038 | With prefix argument SET-VERSION, allow user to specify initial version |
0e362f54 GM |
1039 | level. If COMMENT is present, use that as an initial comment. |
1040 | ||
e1d95cc4 | 1041 | The version control system to use is found by cycling through the list |
0e362f54 GM |
1042 | `vc-handled-backends'. The first backend in that list which declares |
1043 | itself responsible for the file (usually because other files in that | |
1044 | directory are already registered under that backend) will be used to | |
1045 | register the file. If no backend declares itself responsible, the | |
1046 | first backend that could register the file is used." | |
594722a8 | 1047 | (interactive "P") |
099bd78a | 1048 | (unless buffer-file-name (error "No visited file")) |
0e362f54 GM |
1049 | (when (vc-backend buffer-file-name) |
1050 | (if (vc-registered buffer-file-name) | |
1051 | (error "This file is already registered") | |
1052 | (unless (y-or-n-p "Previous master file has vanished. Make a new one? ") | |
1053 | (error "Aborted")))) | |
02da6253 PE |
1054 | ;; Watch out for new buffers of size 0: the corresponding file |
1055 | ;; does not exist yet, even though buffer-modified-p is nil. | |
1056 | (if (and (not (buffer-modified-p)) | |
1057 | (zerop (buffer-size)) | |
1058 | (not (file-exists-p buffer-file-name))) | |
1059 | (set-buffer-modified-p t)) | |
594722a8 | 1060 | (vc-buffer-sync) |
0e362f54 GM |
1061 | |
1062 | (vc-start-entry buffer-file-name | |
1063 | (if set-version | |
1d502d5a AS |
1064 | (read-string (format "Initial version level for %s: " |
1065 | (buffer-name))) | |
0e362f54 GM |
1066 | ;; TODO: Use backend-specific init version. |
1067 | vc-default-init-version) | |
1068 | (or comment (not vc-initial-comment)) | |
0ab66291 | 1069 | nil |
0e362f54 GM |
1070 | "Enter initial comment." |
1071 | (lambda (file rev comment) | |
1072 | (message "Registering %s... " file) | |
8989ab56 | 1073 | (let ((backend (vc-responsible-backend file t))) |
e1d95cc4 | 1074 | (vc-file-clearprops file) |
0e362f54 GM |
1075 | (vc-call-backend backend 'register file rev comment) |
1076 | (vc-file-setprop file 'vc-backend backend) | |
1077 | (unless vc-make-backup-files | |
1078 | (make-local-variable 'backup-inhibited) | |
1079 | (setq backup-inhibited t))) | |
1080 | (message "Registering %s... done" file)))) | |
1081 | ||
8989ab56 AS |
1082 | |
1083 | (defun vc-responsible-backend (file &optional register) | |
1084 | "Return the name of a backend system that is responsible for FILE. | |
1085 | The optional argument REGISTER means that a backend suitable for | |
1086 | registration should be found. | |
1087 | ||
1088 | If REGISTER is nil, then if FILE is already registered, return the | |
1089 | backend of FILE. If FILE is not registered, or a directory, then the | |
1090 | first backend in `vc-handled-backends' that declares itself | |
1091 | responsible for FILE is returned. If no backend declares itself | |
1092 | responsible, return the first backend. | |
1093 | ||
1094 | If REGISTER is non-nil, return the first responsible backend under | |
1095 | which FILE is not yet registered. If there is no such backend, return | |
1096 | the first backend under which FILE is not yet registered, but could | |
1097 | be registered." | |
1098 | (if (not vc-handled-backends) | |
1099 | (error "No handled backends")) | |
1100 | (or (and (not (file-directory-p file)) (not register) (vc-backend file)) | |
1101 | (catch 'found | |
1102 | ;; First try: find a responsible backend. If this is for registration, | |
1103 | ;; it must be a backend under which FILE is not yet registered. | |
1104 | (dolist (backend vc-handled-backends) | |
1105 | (and (or (not register) | |
1106 | (not (vc-call-backend backend 'registered file))) | |
1107 | (vc-call-backend backend 'responsible-p file) | |
1108 | (throw 'found backend))) | |
1109 | ;; no responsible backend | |
1110 | (if (not register) | |
1111 | ;; if this is not for registration, the first backend must do | |
1112 | (car vc-handled-backends) | |
1113 | ;; for registration, we need to find a new backend that | |
1114 | ;; could register FILE | |
1115 | (dolist (backend vc-handled-backends) | |
1116 | (and (not (vc-call-backend backend 'registered file)) | |
1117 | (vc-call-backend backend 'could-register file) | |
1118 | (throw 'found backend))) | |
1119 | (error "No backend that could register"))))) | |
0e362f54 | 1120 | |
099bd78a SM |
1121 | (defun vc-default-responsible-p (backend file) |
1122 | "Indicate whether BACKEND is reponsible for FILE. | |
1123 | The default is to return nil always." | |
1124 | nil) | |
1125 | ||
0e362f54 | 1126 | (defun vc-default-could-register (backend file) |
6f41eeb5 | 1127 | "Return non-nil if BACKEND could be used to register FILE. |
0e362f54 GM |
1128 | The default implementation returns t for all files." |
1129 | t) | |
594722a8 | 1130 | |
624b4662 | 1131 | (defun vc-resynch-window (file &optional keep noquery) |
099bd78a SM |
1132 | "If FILE is in the current buffer, either revert or unvisit it. |
1133 | The choice between revert (to see expanded keywords) and unvisit depends on | |
1134 | `vc-keep-workfiles'. NOQUERY if non-nil inhibits confirmation for | |
0e362f54 GM |
1135 | reverting. NOQUERY should be t *only* if it is known the only |
1136 | difference between the buffer and the file is due to version control | |
1137 | rather than user editing!" | |
594722a8 ER |
1138 | (and (string= buffer-file-name file) |
1139 | (if keep | |
1140 | (progn | |
1ab31687 | 1141 | (vc-revert-buffer1 t noquery) |
0e362f54 GM |
1142 | ;; TODO: Adjusting view mode might no longer be necessary |
1143 | ;; after RMS change to files.el of 1999-08-08. Investigate | |
1144 | ;; this when we install the new VC. | |
f8791ebe AS |
1145 | (and view-read-only |
1146 | (if (file-writable-p file) | |
1147 | (and view-mode | |
1148 | (let ((view-old-buffer-read-only nil)) | |
1149 | (view-mode-exit))) | |
1150 | (and (not view-mode) | |
1151 | (not (eq (get major-mode 'mode-class) 'special)) | |
1152 | (view-mode-enter)))) | |
594722a8 | 1153 | (vc-mode-line buffer-file-name)) |
88a2ffaf | 1154 | (kill-buffer (current-buffer))))) |
594722a8 | 1155 | |
503b5c85 | 1156 | (defun vc-resynch-buffer (file &optional keep noquery) |
0e362f54 | 1157 | "If FILE is currently visited, resynch its buffer." |
4b398f5d AS |
1158 | (if (string= buffer-file-name file) |
1159 | (vc-resynch-window file keep noquery) | |
1160 | (let ((buffer (get-file-buffer file))) | |
1161 | (if buffer | |
0e362f54 GM |
1162 | (with-current-buffer buffer |
1163 | (vc-resynch-window file keep noquery))))) | |
1164 | (vc-dired-resynch-file file)) | |
503b5c85 | 1165 | |
0ab66291 AS |
1166 | (defun vc-start-entry (file rev comment initial-contents msg action &optional after-hook) |
1167 | "Accept a comment for an operation on FILE revision REV. | |
6f41eeb5 | 1168 | If COMMENT is nil, pop up a VC-log buffer, emit MSG, and set the |
0ab66291 AS |
1169 | action on close to ACTION. If COMMENT is a string and |
1170 | INITIAL-CONTENTS is non-nil, then COMMENT is used as the initial | |
1171 | contents of the log entry buffer. If COMMENT is a string and | |
1172 | INITIAL-CONTENTS is nil, do action immediately as if the user had | |
1173 | entered COMMENT. If COMMENT is t, also do action immediately with an | |
1174 | empty comment. Remember the file's buffer in `vc-parent-buffer' | |
1175 | \(current one if no file). AFTER-HOOK specifies the local value | |
1176 | for vc-log-operation-hook." | |
1177 | (let ((parent (or (and file (get-file-buffer file)) (current-buffer)))) | |
f0b188ed RS |
1178 | (if vc-before-checkin-hook |
1179 | (if file | |
0e362f54 | 1180 | (with-current-buffer parent |
f0b188ed RS |
1181 | (run-hooks 'vc-before-checkin-hook)) |
1182 | (run-hooks 'vc-before-checkin-hook))) | |
0ab66291 | 1183 | (if (and comment (not initial-contents)) |
e1f297e6 ER |
1184 | (set-buffer (get-buffer-create "*VC-log*")) |
1185 | (pop-to-buffer (get-buffer-create "*VC-log*"))) | |
8c0aaf40 ER |
1186 | (set (make-local-variable 'vc-parent-buffer) parent) |
1187 | (set (make-local-variable 'vc-parent-buffer-name) | |
1188 | (concat " from " (buffer-name vc-parent-buffer))) | |
7e869659 | 1189 | (if file (vc-mode-line file)) |
099bd78a | 1190 | (vc-log-edit file) |
b965445f RS |
1191 | (make-local-variable 'vc-log-after-operation-hook) |
1192 | (if after-hook | |
1193 | (setq vc-log-after-operation-hook after-hook)) | |
e1f297e6 | 1194 | (setq vc-log-operation action) |
e1f297e6 | 1195 | (setq vc-log-version rev) |
0ab66291 AS |
1196 | (erase-buffer) |
1197 | (if (eq comment t) | |
1198 | (vc-finish-logentry t) | |
1199 | (if comment | |
1200 | (insert comment)) | |
1201 | (if (and comment (not initial-contents)) | |
1202 | (vc-finish-logentry nil) | |
1203 | (message "%s Type C-c C-c when done" msg))))) | |
e1f297e6 | 1204 | |
c6d4f628 | 1205 | (defun vc-checkout (file &optional writable rev) |
099bd78a SM |
1206 | "Retrieve a copy of the revision REV of FILE. |
1207 | If WRITABLE is non-nil, make sure the retrieved file is writable. | |
1208 | REV defaults to the latest revision." | |
1209 | (with-vc-properties | |
1210 | file | |
1211 | (condition-case err | |
1212 | (vc-call checkout file writable rev) | |
1213 | (file-error | |
1214 | ;; Maybe the backend is not installed ;-( | |
1215 | (when writable | |
1216 | (let ((buf (get-file-buffer file))) | |
1217 | (when buf (with-current-buffer buf (toggle-read-only -1))))) | |
1218 | (signal (car err) (cdr err)))) | |
1219 | `((vc-state ,(if (or (eq (vc-checkout-model file) 'implicit) | |
1220 | (not writable)) | |
1221 | (if (vc-call latest-on-branch-p file) | |
1222 | 'up-to-date | |
1223 | 'needs-patch) | |
1224 | 'edited)) | |
1225 | (vc-checkout-time ,(nth 5 (file-attributes file))))) | |
b0c9bc8c | 1226 | (vc-resynch-buffer file t t)) |
594722a8 | 1227 | |
0e362f54 | 1228 | (defun vc-steal-lock (file rev owner) |
099bd78a | 1229 | "Steal the lock on FILE." |
29fc1ce9 | 1230 | (let (file-description) |
29fc1ce9 RS |
1231 | (if rev |
1232 | (setq file-description (format "%s:%s" file rev)) | |
1233 | (setq file-description file)) | |
4bc504c8 RS |
1234 | (if (not (yes-or-no-p (format "Steal the lock on %s from %s? " |
1235 | file-description owner))) | |
0e362f54 GM |
1236 | (error "Steal canceled")) |
1237 | (compose-mail owner (format "Stolen lock on %s" file-description) | |
1238 | nil nil nil nil | |
1239 | (list (list 'vc-finish-steal file rev))) | |
29fc1ce9 | 1240 | (setq default-directory (expand-file-name "~/")) |
29fc1ce9 RS |
1241 | (goto-char (point-max)) |
1242 | (insert | |
1243 | (format "I stole the lock on %s, " file-description) | |
1244 | (current-time-string) | |
1245 | ".\n") | |
1246 | (message "Please explain why you stole the lock. Type C-c C-c when done."))) | |
594722a8 ER |
1247 | |
1248 | (defun vc-finish-steal (file version) | |
0e362f54 GM |
1249 | ;; This is called when the notification has been sent. |
1250 | (message "Stealing lock on %s..." file) | |
099bd78a SM |
1251 | (with-vc-properties |
1252 | file | |
1253 | (vc-call steal-lock file version) | |
1254 | `((vc-state edited))) | |
0e362f54 GM |
1255 | (vc-resynch-buffer file t t) |
1256 | (message "Stealing lock on %s...done" file)) | |
594722a8 | 1257 | |
0ab66291 | 1258 | (defun vc-checkin (file &optional rev comment initial-contents) |
6f41eeb5 | 1259 | "Check in FILE. |
0e362f54 GM |
1260 | The optional argument REV may be a string specifying the new version |
1261 | level (if nil increment the current level). COMMENT is a comment | |
0ab66291 AS |
1262 | string; if omitted, a buffer is popped up to accept a comment. If |
1263 | INITIAL-CONTENTS is non-nil, then COMMENT is used as the initial contents | |
1264 | of the log entry buffer. | |
0e362f54 GM |
1265 | |
1266 | If `vc-keep-workfiles' is nil, FILE is deleted afterwards, provided | |
1267 | that the version control system supports this mode of operation. | |
861f3c29 DL |
1268 | |
1269 | Runs the normal hook `vc-checkin-hook'." | |
6f41eeb5 | 1270 | (vc-start-entry |
0ab66291 | 1271 | file rev comment initial-contents |
6f41eeb5 | 1272 | "Enter a change comment." |
0e362f54 GM |
1273 | (lambda (file rev comment) |
1274 | (message "Checking in %s..." file) | |
1275 | ;; "This log message intentionally left almost blank". | |
1276 | ;; RCS 5.7 gripes about white-space-only comments too. | |
1277 | (or (and comment (string-match "[^\t\n ]" comment)) | |
1278 | (setq comment "*** empty log message ***")) | |
099bd78a SM |
1279 | (with-vc-properties |
1280 | file | |
1281 | ;; Change buffers to get local value of vc-checkin-switches. | |
1282 | (with-current-buffer (or (get-file-buffer file) (current-buffer)) | |
1283 | (vc-call checkin file rev comment)) | |
1284 | `((vc-state up-to-date) | |
1285 | (vc-checkout-time ,(nth 5 (file-attributes file))) | |
1286 | (vc-workfile-version nil))) | |
0e362f54 GM |
1287 | (message "Checking in %s...done" file)) |
1288 | 'vc-checkin-hook)) | |
594722a8 | 1289 | |
3b4dd9a9 RM |
1290 | (defun vc-comment-to-change-log (&optional whoami file-name) |
1291 | "Enter last VC comment into change log file for current buffer's file. | |
1292 | Optional arg (interactive prefix) non-nil means prompt for user name and site. | |
1293 | Second arg is file name of change log. \ | |
861f3c29 DL |
1294 | If nil, uses `change-log-default-name'. |
1295 | ||
1296 | May be useful as a `vc-checkin-hook' to update change logs automatically." | |
43cea1ab RM |
1297 | (interactive (if current-prefix-arg |
1298 | (list current-prefix-arg | |
1299 | (prompt-for-change-log-name)))) | |
41208291 KH |
1300 | ;; Make sure the defvar for add-log-current-defun-function has been executed |
1301 | ;; before binding it. | |
1302 | (require 'add-log) | |
3b4dd9a9 RM |
1303 | (let (;; Extract the comment first so we get any error before doing anything. |
1304 | (comment (ring-ref vc-comment-ring 0)) | |
43cea1ab | 1305 | ;; Don't let add-change-log-entry insert a defun name. |
3b4dd9a9 RM |
1306 | (add-log-current-defun-function 'ignore) |
1307 | end) | |
1308 | ;; Call add-log to do half the work. | |
43cea1ab | 1309 | (add-change-log-entry whoami file-name t t) |
3b4dd9a9 RM |
1310 | ;; Insert the VC comment, leaving point before it. |
1311 | (setq end (save-excursion (insert comment) (point-marker))) | |
1312 | (if (looking-at "\\s *\\s(") | |
1313 | ;; It starts with an open-paren, as in "(foo): Frobbed." | |
43cea1ab | 1314 | ;; So remove the ": " add-log inserted. |
3b4dd9a9 RM |
1315 | (delete-char -2)) |
1316 | ;; Canonicalize the white space between the file name and comment. | |
1317 | (just-one-space) | |
1318 | ;; Indent rest of the text the same way add-log indented the first line. | |
1319 | (let ((indentation (current-indentation))) | |
1320 | (save-excursion | |
1321 | (while (< (point) end) | |
1322 | (forward-line 1) | |
1323 | (indent-to indentation)) | |
c124b1b4 | 1324 | (setq end (point)))) |
3b4dd9a9 | 1325 | ;; Fill the inserted text, preserving open-parens at bol. |
6b60c5d1 BG |
1326 | (let ((paragraph-separate (concat paragraph-separate "\\|\\s *\\s(")) |
1327 | (paragraph-start (concat paragraph-start "\\|\\s *\\s("))) | |
43cea1ab | 1328 | (beginning-of-line) |
c124b1b4 RM |
1329 | (fill-region (point) end)) |
1330 | ;; Canonicalize the white space at the end of the entry so it is | |
1331 | ;; separated from the next entry by a single blank line. | |
1332 | (skip-syntax-forward " " end) | |
1333 | (delete-char (- (skip-syntax-backward " "))) | |
1334 | (or (eobp) (looking-at "\n\n") | |
1335 | (insert "\n")))) | |
3b4dd9a9 | 1336 | |
8c0aaf40 | 1337 | (defun vc-finish-logentry (&optional nocomment) |
594722a8 ER |
1338 | "Complete the operation implied by the current log entry." |
1339 | (interactive) | |
8c0aaf40 | 1340 | ;; Check and record the comment, if any. |
0e362f54 GM |
1341 | (unless nocomment |
1342 | ;; Comment too long? | |
1343 | (vc-call-backend (or (and vc-log-file (vc-backend vc-log-file)) | |
1344 | (vc-responsible-backend default-directory)) | |
1345 | 'logentry-check) | |
1346 | (run-hooks 'vc-logentry-check-hook) | |
1347 | ;; Record the comment in the comment ring | |
1348 | (let ((comment (buffer-string))) | |
1349 | (unless (and (ring-p vc-comment-ring) | |
1350 | (not (ring-empty-p vc-comment-ring)) | |
1351 | (equal comment (ring-ref vc-comment-ring 0))) | |
1352 | (ring-insert vc-comment-ring comment)))) | |
b2396d1f | 1353 | ;; Sync parent buffer in case the user modified it while editing the comment. |
cdaf7a1a | 1354 | ;; But not if it is a vc-dired buffer. |
0e362f54 GM |
1355 | (with-current-buffer vc-parent-buffer |
1356 | (or vc-dired-mode (vc-buffer-sync))) | |
61dee1e7 AS |
1357 | (if (not vc-log-operation) (error "No log operation is pending")) |
1358 | ;; save the parameters held in buffer-local variables | |
1359 | (let ((log-operation vc-log-operation) | |
1360 | (log-file vc-log-file) | |
1361 | (log-version vc-log-version) | |
1362 | (log-entry (buffer-string)) | |
2c4eea90 KH |
1363 | (after-hook vc-log-after-operation-hook) |
1364 | (tmp-vc-parent-buffer vc-parent-buffer)) | |
e2bef5c3 | 1365 | (pop-to-buffer vc-parent-buffer) |
61dee1e7 AS |
1366 | ;; OK, do it to it |
1367 | (save-excursion | |
0e362f54 | 1368 | (funcall log-operation |
61dee1e7 AS |
1369 | log-file |
1370 | log-version | |
1371 | log-entry)) | |
df1e7b91 KH |
1372 | ;; Remove checkin window (after the checkin so that if that fails |
1373 | ;; we don't zap the *VC-log* buffer and the typing therein). | |
1374 | (let ((logbuf (get-buffer "*VC-log*"))) | |
2c4eea90 KH |
1375 | (cond ((and logbuf vc-delete-logbuf-window) |
1376 | (delete-windows-on logbuf (selected-frame)) | |
262c8cea | 1377 | ;; Kill buffer and delete any other dedicated windows/frames. |
2c4eea90 | 1378 | (kill-buffer logbuf)) |
0ab66291 AS |
1379 | (logbuf (pop-to-buffer "*VC-log*") |
1380 | (bury-buffer) | |
1381 | (pop-to-buffer tmp-vc-parent-buffer)))) | |
e2bef5c3 | 1382 | ;; Now make sure we see the expanded headers |
0ab66291 AS |
1383 | (if log-file |
1384 | (vc-resynch-buffer log-file vc-keep-workfiles t)) | |
0e362f54 | 1385 | (if vc-dired-mode |
0ab66291 | 1386 | (dired-move-to-filename)) |
37667a5c | 1387 | (run-hooks after-hook 'vc-finish-logentry-hook))) |
594722a8 ER |
1388 | |
1389 | ;; Code for access to the comment ring | |
1390 | ||
0e362f54 GM |
1391 | (defun vc-new-comment-index (stride len) |
1392 | (mod (cond | |
1393 | (vc-comment-ring-index (+ vc-comment-ring-index stride)) | |
1394 | ;; Initialize the index on the first use of this command | |
1395 | ;; so that the first M-p gets index 0, and the first M-n gets | |
1396 | ;; index -1. | |
1397 | ((> stride 0) (1- stride)) | |
1398 | (t stride)) | |
1399 | len)) | |
1400 | ||
8c0aaf40 ER |
1401 | (defun vc-previous-comment (arg) |
1402 | "Cycle backwards through comment history." | |
1403 | (interactive "*p") | |
1404 | (let ((len (ring-length vc-comment-ring))) | |
0e362f54 GM |
1405 | (if (<= len 0) |
1406 | (progn (message "Empty comment ring") (ding)) | |
1407 | (erase-buffer) | |
1408 | (setq vc-comment-ring-index (vc-new-comment-index arg len)) | |
1409 | (message "Comment %d" (1+ vc-comment-ring-index)) | |
1410 | (insert (ring-ref vc-comment-ring vc-comment-ring-index))))) | |
8c0aaf40 ER |
1411 | |
1412 | (defun vc-next-comment (arg) | |
1413 | "Cycle forwards through comment history." | |
1414 | (interactive "*p") | |
1415 | (vc-previous-comment (- arg))) | |
1416 | ||
0e362f54 | 1417 | (defun vc-comment-search-reverse (str &optional stride) |
8c0aaf40 | 1418 | "Searches backwards through comment history for substring match." |
0e362f54 GM |
1419 | ;; Why substring rather than regexp ? -sm |
1420 | (interactive | |
1421 | (list (read-string "Comment substring: " nil nil vc-last-comment-match))) | |
1422 | (unless stride (setq stride 1)) | |
8c0aaf40 ER |
1423 | (if (string= str "") |
1424 | (setq str vc-last-comment-match) | |
1425 | (setq vc-last-comment-match str)) | |
0e362f54 GM |
1426 | (let* ((str (regexp-quote str)) |
1427 | (len (ring-length vc-comment-ring)) | |
1428 | (n (vc-new-comment-index stride len))) | |
1429 | (while (progn (when (or (>= n len) (< n 0)) (error "Not found")) | |
1430 | (not (string-match str (ring-ref vc-comment-ring n)))) | |
1431 | (setq n (+ n stride))) | |
1432 | (setq vc-comment-ring-index n) | |
1433 | (vc-previous-comment 0))) | |
8c0aaf40 ER |
1434 | |
1435 | (defun vc-comment-search-forward (str) | |
1436 | "Searches forwards through comment history for substring match." | |
0e362f54 GM |
1437 | (interactive |
1438 | (list (read-string "Comment substring: " nil nil vc-last-comment-match))) | |
1439 | (vc-comment-search-reverse str -1)) | |
594722a8 ER |
1440 | |
1441 | ;; Additional entry points for examining version histories | |
1442 | ||
637a8ae9 | 1443 | ;;;###autoload |
97d3f950 | 1444 | (defun vc-diff (historic &optional not-urgent) |
e8ee1ccf | 1445 | "Display diffs between file versions. |
0e362f54 | 1446 | Normally this compares the current file and buffer with the most recent |
e8ee1ccf RS |
1447 | checked in version of that file. This uses no arguments. |
1448 | With a prefix argument, it reads the file name to use | |
1449 | and two version designators specifying which versions to compare." | |
48078f8f | 1450 | (interactive (list current-prefix-arg t)) |
b6909007 | 1451 | (vc-ensure-vc-buffer) |
594722a8 ER |
1452 | (if historic |
1453 | (call-interactively 'vc-version-diff) | |
0e362f54 | 1454 | (let ((file buffer-file-name)) |
c0d66cb2 | 1455 | (vc-buffer-sync not-urgent) |
0e362f54 GM |
1456 | (if (vc-workfile-unchanged-p buffer-file-name) |
1457 | (message "No changes to %s since latest version" file) | |
1458 | (vc-version-diff file nil nil))))) | |
594722a8 ER |
1459 | |
1460 | (defun vc-version-diff (file rel1 rel2) | |
1461 | "For FILE, report diffs between two stored versions REL1 and REL2 of it. | |
1462 | If FILE is a directory, generate diffs between versions for all registered | |
1463 | files in or below it." | |
0e362f54 | 1464 | (interactive |
4e6473c8 GM |
1465 | (let ((file (expand-file-name |
1466 | (read-file-name (if buffer-file-name | |
1467 | "File or dir to diff: (default visited file) " | |
1468 | "File or dir to diff: ") | |
1469 | default-directory buffer-file-name t))) | |
c0d66cb2 RS |
1470 | (rel1-default nil) (rel2-default nil)) |
1471 | ;; compute default versions based on the file state | |
1472 | (cond | |
0e362f54 GM |
1473 | ;; if it's a directory, don't supply any version default |
1474 | ((file-directory-p file) | |
c0d66cb2 | 1475 | nil) |
0e362f54 GM |
1476 | ;; if the file is not up-to-date, use current version as older version |
1477 | ((not (vc-up-to-date-p file)) | |
c0d66cb2 RS |
1478 | (setq rel1-default (vc-workfile-version file))) |
1479 | ;; if the file is not locked, use last and previous version as default | |
1480 | (t | |
1481 | (setq rel1-default (vc-previous-version (vc-workfile-version file))) | |
0e362f54 | 1482 | (if (string= rel1-default "") (setq rel1-default nil)) |
c0d66cb2 RS |
1483 | (setq rel2-default (vc-workfile-version file)))) |
1484 | ;; construct argument list | |
0e362f54 | 1485 | (list file |
8e710301 RS |
1486 | (read-string (if rel1-default |
1487 | (concat "Older version: (default " | |
1488 | rel1-default ") ") | |
1489 | "Older version: ") | |
1490 | nil nil rel1-default) | |
1491 | (read-string (if rel2-default | |
1492 | (concat "Newer version: (default " | |
1493 | rel2-default ") ") | |
ba27415c | 1494 | "Newer version (default: current source): ") |
8e710301 | 1495 | nil nil rel2-default)))) |
594722a8 ER |
1496 | (if (string-equal rel1 "") (setq rel1 nil)) |
1497 | (if (string-equal rel2 "") (setq rel2 nil)) | |
0e362f54 | 1498 | (vc-setup-buffer "*vc-diff*") |
594722a8 | 1499 | (if (file-directory-p file) |
0e362f54 | 1500 | (let ((inhibit-read-only t)) |
3234e2a3 ER |
1501 | (insert "Diffs between " |
1502 | (or rel1 "last version checked in") | |
1503 | " and " | |
1504 | (or rel2 "current workfile(s)") | |
1505 | ":\n\n") | |
0e362f54 GM |
1506 | (setq default-directory (file-name-as-directory file)) |
1507 | ;; FIXME: this should do a single exec in CVS. | |
594722a8 | 1508 | (vc-file-tree-walk |
2f119435 | 1509 | default-directory |
0e362f54 GM |
1510 | (lambda (f) |
1511 | (vc-exec-after | |
1512 | `(progn | |
1513 | (message "Looking at %s" ',f) | |
1514 | (vc-call-backend ',(vc-backend file) 'diff ',f ',rel1 ',rel2))))) | |
1515 | (vc-exec-after `(let ((inhibit-read-only t)) | |
1516 | (insert "\nEnd of diffs.\n")))) | |
1517 | ||
1518 | (cd (file-name-directory file)) | |
1519 | (vc-call diff file rel1 rel2)) | |
1520 | (if (and (zerop (buffer-size)) | |
1521 | (not (get-buffer-process (current-buffer)))) | |
1522 | (progn | |
1523 | (if rel1 | |
1524 | (if rel2 | |
1525 | (message "No changes to %s between %s and %s" file rel1 rel2) | |
1526 | (message "No changes to %s since %s" file rel1)) | |
1527 | (message "No changes to %s since latest version" file)) | |
1528 | nil) | |
1529 | (pop-to-buffer (current-buffer)) | |
1530 | ;; Gnus-5.8.5 sets up an autoload for diff-mode, even if it's | |
1531 | ;; not available. Work around that. | |
1532 | (if (require 'diff-mode nil t) (diff-mode)) | |
1d502d5a AS |
1533 | (vc-exec-after '(progn (if (eq (buffer-size) 0) |
1534 | (insert "No differences found.\n")) | |
1535 | (goto-char (point-min)) | |
0e362f54 GM |
1536 | (shrink-window-if-larger-than-buffer))) |
1537 | t)) | |
594722a8 | 1538 | |
f1818994 PE |
1539 | ;;;###autoload |
1540 | (defun vc-version-other-window (rev) | |
1541 | "Visit version REV of the current buffer in another window. | |
1542 | If the current buffer is named `F', the version is named `F.~REV~'. | |
1543 | If `F.~REV~' already exists, it is used instead of being re-created." | |
0e362f54 | 1544 | (interactive "sVersion to visit (default is workfile version): ") |
b6909007 AS |
1545 | (vc-ensure-vc-buffer) |
1546 | (let* ((version (if (string-equal rev "") | |
0e362f54 | 1547 | (vc-workfile-version buffer-file-name) |
b6909007 AS |
1548 | rev)) |
1549 | (filename (concat buffer-file-name ".~" version "~"))) | |
1550 | (or (file-exists-p filename) | |
0e362f54 | 1551 | (vc-call checkout buffer-file-name nil version filename)) |
b6909007 | 1552 | (find-file-other-window filename))) |
f1818994 | 1553 | |
594722a8 ER |
1554 | ;; Header-insertion code |
1555 | ||
637a8ae9 | 1556 | ;;;###autoload |
594722a8 | 1557 | (defun vc-insert-headers () |
099bd78a | 1558 | "Insert headers in a file for use with your version control system. |
b524ce9f | 1559 | Headers desired are inserted at point, and are pulled from |
0e362f54 | 1560 | the variable `vc-BACKEND-header'." |
594722a8 | 1561 | (interactive) |
b6909007 | 1562 | (vc-ensure-vc-buffer) |
594722a8 ER |
1563 | (save-excursion |
1564 | (save-restriction | |
1565 | (widen) | |
1566 | (if (or (not (vc-check-headers)) | |
820bde8d | 1567 | (y-or-n-p "Version headers already exist. Insert another set? ")) |
594722a8 ER |
1568 | (progn |
1569 | (let* ((delims (cdr (assq major-mode vc-comment-alist))) | |
1570 | (comment-start-vc (or (car delims) comment-start "#")) | |
1571 | (comment-end-vc (or (car (cdr delims)) comment-end "")) | |
0e362f54 GM |
1572 | (hdsym (vc-make-backend-sym (vc-backend (buffer-file-name)) |
1573 | 'header)) | |
1574 | (hdstrings (and (boundp hdsym) (symbol-value hdsym)))) | |
1575 | (mapcar (lambda (s) | |
1576 | (insert comment-start-vc "\t" s "\t" | |
1577 | comment-end-vc "\n")) | |
594722a8 ER |
1578 | hdstrings) |
1579 | (if vc-static-header-alist | |
0e362f54 GM |
1580 | (mapcar (lambda (f) |
1581 | (if (string-match (car f) buffer-file-name) | |
1582 | (insert (format (cdr f) (car hdstrings))))) | |
594722a8 ER |
1583 | vc-static-header-alist)) |
1584 | ) | |
1585 | ))))) | |
1586 | ||
0e362f54 | 1587 | (defun vc-clear-headers (&optional file) |
099bd78a SM |
1588 | "Clear all version headers in the current buffer (or FILE). |
1589 | I.e. reset them to the non-expanded form." | |
0e362f54 GM |
1590 | (let* ((filename (or file buffer-file-name)) |
1591 | (visited (find-buffer-visiting filename)) | |
1592 | (backend (vc-backend filename))) | |
1593 | (when (vc-find-backend-function backend 'clear-headers) | |
6f41eeb5 | 1594 | (if visited |
0e362f54 GM |
1595 | (let ((context (vc-buffer-context))) |
1596 | ;; save-excursion may be able to relocate point and mark | |
1597 | ;; properly. If it fails, vc-restore-buffer-context | |
1598 | ;; will give it a second try. | |
1599 | (save-excursion | |
1600 | (vc-call-backend backend 'clear-headers)) | |
1601 | (vc-restore-buffer-context context)) | |
7849e179 | 1602 | (set-buffer (find-file-noselect filename)) |
0e362f54 GM |
1603 | (vc-call-backend backend 'clear-headers) |
1604 | (kill-buffer filename))))) | |
c8de1d91 | 1605 | |
b6909007 | 1606 | ;;;###autoload |
099bd78a SM |
1607 | (defun vc-merge () |
1608 | "Merge changes between two versions into the current buffer's file. | |
1609 | This asks for two versions to merge from in the minibuffer. If the | |
1610 | first version is a branch number, then merge all changes from that | |
1611 | branch. If the first version is empty, merge news, i.e. recent changes | |
1612 | from the current branch. | |
0e362f54 GM |
1613 | |
1614 | See Info node `Merging'." | |
099bd78a | 1615 | (interactive) |
ccb141e8 AS |
1616 | (vc-ensure-vc-buffer) |
1617 | (vc-buffer-sync) | |
1618 | (let* ((file buffer-file-name) | |
1619 | (backend (vc-backend file)) | |
0e362f54 | 1620 | (state (vc-state file)) |
099bd78a | 1621 | first-version second-version status) |
0e362f54 | 1622 | (cond |
0e362f54 GM |
1623 | ((stringp state) |
1624 | (error "File is locked by %s" state)) | |
1625 | ((not (vc-editable-p file)) | |
1626 | (if (y-or-n-p | |
1627 | "File must be checked out for merging. Check out now? ") | |
1628 | (vc-checkout file t) | |
1629 | (error "Merge aborted")))) | |
099bd78a SM |
1630 | (setq first-version |
1631 | (read-string (concat "Branch or version to merge from " | |
1632 | "(default: news on current branch): "))) | |
1633 | (if (string= first-version "") | |
1634 | (if (not (vc-find-backend-function backend 'merge-news)) | |
1635 | (error "Sorry, merging news is not implemented for %s" backend) | |
1636 | (setq status (vc-call merge-news file))) | |
1637 | (if (not (vc-find-backend-function backend 'merge)) | |
1638 | (error "Sorry, merging is not implemented for %s" backend) | |
1639 | (if (not (vc-branch-p first-version)) | |
1640 | (setq second-version | |
1641 | (read-string "Second version: " | |
1642 | (concat (vc-branch-part first-version) "."))) | |
1643 | ;; We want to merge an entire branch. Set versions | |
1644 | ;; accordingly, so that vc-BACKEND-merge understands us. | |
1645 | (setq second-version first-version) | |
1646 | ;; first-version must be the starting point of the branch | |
1647 | (setq first-version (vc-branch-part first-version))) | |
1648 | (setq status (vc-call merge file first-version second-version)))) | |
1649 | (vc-maybe-resolve-conflicts file status "WORKFILE" "MERGE SOURCE"))) | |
0e362f54 GM |
1650 | |
1651 | (defun vc-maybe-resolve-conflicts (file status &optional name-A name-B) | |
1652 | (vc-resynch-buffer file t (not (buffer-modified-p))) | |
1653 | (if (zerop status) (message "Merge successful") | |
1654 | (if (fboundp 'smerge-mode) (smerge-mode 1)) | |
1655 | (if (y-or-n-p "Conflicts detected. Resolve them now? ") | |
1656 | (if (fboundp 'smerge-ediff) | |
1657 | (smerge-ediff) | |
1658 | (vc-resolve-conflicts name-A name-B)) | |
1659 | (message "File contains conflict markers")))) | |
ccb141e8 | 1660 | |
beba4bd9 AS |
1661 | (defvar vc-ediff-windows) |
1662 | (defvar vc-ediff-result) | |
0e362f54 GM |
1663 | (eval-when-compile |
1664 | (defvar ediff-buffer-A) | |
1665 | (defvar ediff-buffer-B) | |
1666 | (defvar ediff-buffer-C) | |
1667 | (require 'ediff-util)) | |
ccb141e8 AS |
1668 | ;;;###autoload |
1669 | (defun vc-resolve-conflicts (&optional name-A name-B) | |
18483cf0 AS |
1670 | "Invoke ediff to resolve conflicts in the current buffer. |
1671 | The conflicts must be marked with rcsmerge conflict markers." | |
1672 | (interactive) | |
b6909007 | 1673 | (vc-ensure-vc-buffer) |
18483cf0 AS |
1674 | (let* ((found nil) |
1675 | (file-name (file-name-nondirectory buffer-file-name)) | |
0e362f54 GM |
1676 | (your-buffer (generate-new-buffer |
1677 | (concat "*" file-name | |
ccb141e8 | 1678 | " " (or name-A "WORKFILE") "*"))) |
0e362f54 GM |
1679 | (other-buffer (generate-new-buffer |
1680 | (concat "*" file-name | |
ccb141e8 | 1681 | " " (or name-B "CHECKED-IN") "*"))) |
18483cf0 | 1682 | (result-buffer (current-buffer))) |
0e362f54 | 1683 | (save-excursion |
18483cf0 AS |
1684 | (set-buffer your-buffer) |
1685 | (erase-buffer) | |
1686 | (insert-buffer result-buffer) | |
1687 | (goto-char (point-min)) | |
0e362f54 | 1688 | (while (re-search-forward (concat "^<<<<<<< " |
18483cf0 AS |
1689 | (regexp-quote file-name) "\n") nil t) |
1690 | (setq found t) | |
1691 | (replace-match "") | |
1692 | (if (not (re-search-forward "^=======\n" nil t)) | |
1693 | (error "Malformed conflict marker")) | |
1694 | (replace-match "") | |
1695 | (let ((start (point))) | |
1696 | (if (not (re-search-forward "^>>>>>>> [0-9.]+\n" nil t)) | |
1697 | (error "Malformed conflict marker")) | |
1698 | (delete-region start (point)))) | |
1699 | (if (not found) | |
1700 | (progn | |
1701 | (kill-buffer your-buffer) | |
1702 | (kill-buffer other-buffer) | |
1703 | (error "No conflict markers found"))) | |
1704 | (set-buffer other-buffer) | |
1705 | (erase-buffer) | |
1706 | (insert-buffer result-buffer) | |
1707 | (goto-char (point-min)) | |
0e362f54 | 1708 | (while (re-search-forward (concat "^<<<<<<< " |
18483cf0 AS |
1709 | (regexp-quote file-name) "\n") nil t) |
1710 | (let ((start (match-beginning 0))) | |
1711 | (if (not (re-search-forward "^=======\n" nil t)) | |
1712 | (error "Malformed conflict marker")) | |
1713 | (delete-region start (point)) | |
1714 | (if (not (re-search-forward "^>>>>>>> [0-9.]+\n" nil t)) | |
1715 | (error "Malformed conflict marker")) | |
1716 | (replace-match ""))) | |
1717 | (let ((config (current-window-configuration)) | |
1718 | (ediff-default-variant 'default-B)) | |
1719 | ||
1720 | ;; Fire up ediff. | |
1721 | ||
1722 | (set-buffer (ediff-merge-buffers your-buffer other-buffer)) | |
1723 | ||
1724 | ;; Ediff is now set up, and we are in the control buffer. | |
1725 | ;; Do a few further adjustments and take precautions for exit. | |
1726 | ||
1727 | (make-local-variable 'vc-ediff-windows) | |
1728 | (setq vc-ediff-windows config) | |
1729 | (make-local-variable 'vc-ediff-result) | |
0e362f54 | 1730 | (setq vc-ediff-result result-buffer) |
18483cf0 | 1731 | (make-local-variable 'ediff-quit-hook) |
6f41eeb5 | 1732 | (setq ediff-quit-hook |
0e362f54 GM |
1733 | (lambda () |
1734 | (let ((buffer-A ediff-buffer-A) | |
1735 | (buffer-B ediff-buffer-B) | |
1736 | (buffer-C ediff-buffer-C) | |
1737 | (result vc-ediff-result) | |
1738 | (windows vc-ediff-windows)) | |
1739 | (ediff-cleanup-mess) | |
1740 | (set-buffer result) | |
1741 | (erase-buffer) | |
1742 | (insert-buffer buffer-C) | |
1743 | (kill-buffer buffer-A) | |
1744 | (kill-buffer buffer-B) | |
1745 | (kill-buffer buffer-C) | |
1746 | (set-window-configuration windows) | |
1747 | (message "Conflict resolution finished; you may save the buffer")))) | |
18483cf0 AS |
1748 | (message "Please resolve conflicts now; exit ediff when done") |
1749 | nil)))) | |
1750 | ||
2f119435 | 1751 | ;; The VC directory major mode. Coopt Dired for this. |
e1f297e6 ER |
1752 | ;; All VC commands get mapped into logical equivalents. |
1753 | ||
beba4bd9 AS |
1754 | (defvar vc-dired-switches) |
1755 | (defvar vc-dired-terse-mode) | |
1756 | ||
0e362f54 GM |
1757 | (defvar vc-dired-mode-map |
1758 | (let ((map (make-sparse-keymap)) | |
1759 | (vmap (make-sparse-keymap))) | |
0e362f54 | 1760 | (define-key map "\C-xv" vc-prefix-map) |
099bd78a SM |
1761 | ;; Emacs-20 has a lousy keymap inheritance that won't work here. |
1762 | ;; Emacs-21's is still lousy but just better enough that it'd work. -sm | |
1763 | ;; (set-keymap-parent vmap vc-prefix-map) | |
1764 | (setq vmap vc-prefix-map) | |
0e362f54 | 1765 | (define-key map "v" vmap) |
0e362f54 GM |
1766 | (define-key vmap "t" 'vc-dired-toggle-terse-mode) |
1767 | map)) | |
1768 | ||
2f119435 | 1769 | (define-derived-mode vc-dired-mode dired-mode "Dired under VC" |
0e362f54 GM |
1770 | "The major mode used in VC directory buffers. |
1771 | ||
1772 | It works like Dired, but lists only files under version control, with | |
1773 | the current VC state of each file being indicated in the place of the | |
1774 | file's link count, owner, group and size. Subdirectories are also | |
1775 | listed, and you may insert them into the buffer as desired, like in | |
1776 | Dired. | |
1777 | ||
1778 | All Dired commands operate normally, with the exception of `v', which | |
1779 | is redefined as the version control prefix, so that you can type | |
3d30b8bc RS |
1780 | `vl', `v=' etc. to invoke `vc-print-log', `vc-diff', and the like on |
1781 | the file named in the current Dired buffer line. `vv' invokes | |
1782 | `vc-next-action' on this file, or on all files currently marked. | |
1783 | There is a special command, `*l', to mark all files currently locked." | |
099bd78a SM |
1784 | ;; define-derived-mode does it for us in Emacs-21, but not in Emacs-20. |
1785 | ;; We do it here because dired might not be loaded yet | |
1786 | ;; when vc-dired-mode-map is initialized. | |
1787 | (set-keymap-parent vc-dired-mode-map dired-mode-map) | |
421f0bfe AS |
1788 | (make-local-hook 'dired-after-readin-hook) |
1789 | (add-hook 'dired-after-readin-hook 'vc-dired-hook nil t) | |
edcb979f AS |
1790 | ;; The following is slightly modified from dired.el, |
1791 | ;; because file lines look a bit different in vc-dired-mode. | |
1792 | (set (make-local-variable 'dired-move-to-filename-regexp) | |
0e362f54 | 1793 | (let* |
edcb979f AS |
1794 | ((l "\\([A-Za-z]\\|[^\0-\177]\\)") |
1795 | ;; In some locales, month abbreviations are as short as 2 letters, | |
1796 | ;; and they can be padded on the right with spaces. | |
1797 | (month (concat l l "+ *")) | |
0e362f54 | 1798 | ;; Recognize any non-ASCII character. |
edcb979f AS |
1799 | ;; The purpose is to match a Kanji character. |
1800 | (k "[^\0-\177]") | |
1801 | ;; (k "[^\x00-\x7f\x80-\xff]") | |
1802 | (s " ") | |
1803 | (yyyy "[0-9][0-9][0-9][0-9]") | |
1804 | (mm "[ 0-1][0-9]") | |
1805 | (dd "[ 0-3][0-9]") | |
1806 | (HH:MM "[ 0-2][0-9]:[0-5][0-9]") | |
1807 | (western (concat "\\(" month s dd "\\|" dd s month "\\)" | |
61d6c25d | 1808 | s "\\(" HH:MM "\\|" s yyyy"\\|" yyyy s "\\)")) |
edcb979f | 1809 | (japanese (concat mm k s dd k s "\\(" s HH:MM "\\|" yyyy k "\\)"))) |
0e362f54 GM |
1810 | ;; the .* below ensures that we find the last match on a line |
1811 | (concat ".*" s "\\(" western "\\|" japanese "\\)" s))) | |
a0019b45 AS |
1812 | (and (boundp 'vc-dired-switches) |
1813 | vc-dired-switches | |
1814 | (set (make-local-variable 'dired-actual-switches) | |
1815 | vc-dired-switches)) | |
3b574573 | 1816 | (set (make-local-variable 'vc-dired-terse-mode) vc-dired-terse-display) |
2f119435 AS |
1817 | (setq vc-dired-mode t)) |
1818 | ||
3b574573 AS |
1819 | (defun vc-dired-toggle-terse-mode () |
1820 | "Toggle terse display in VC Dired." | |
1821 | (interactive) | |
1822 | (if (not vc-dired-mode) | |
1823 | nil | |
1824 | (setq vc-dired-terse-mode (not vc-dired-terse-mode)) | |
1825 | (if vc-dired-terse-mode | |
1826 | (vc-dired-hook) | |
1827 | (revert-buffer)))) | |
1828 | ||
3d30b8bc RS |
1829 | (defun vc-dired-mark-locked () |
1830 | "Mark all files currently locked." | |
1831 | (interactive) | |
1832 | (dired-mark-if (let ((f (dired-get-filename nil t))) | |
1833 | (and f | |
1834 | (not (file-directory-p f)) | |
0e362f54 | 1835 | (not (vc-up-to-date-p f)))) |
3d30b8bc RS |
1836 | "locked file")) |
1837 | ||
1838 | (define-key vc-dired-mode-map "*l" 'vc-dired-mark-locked) | |
1839 | ||
0e362f54 GM |
1840 | (defun vc-default-dired-state-info (backend file) |
1841 | (let ((state (vc-state file))) | |
1842 | (cond | |
1843 | ((stringp state) (concat "(" state ")")) | |
1844 | ((eq state 'edited) (concat "(" (vc-user-login-name) ")")) | |
1845 | ((eq state 'needs-merge) "(merge)") | |
1846 | ((eq state 'needs-patch) "(patch)") | |
1847 | ((eq state 'unlocked-changes) "(stale)")))) | |
b0c9bc8c | 1848 | |
8c0aaf40 | 1849 | (defun vc-dired-reformat-line (x) |
0e362f54 GM |
1850 | "Reformat a directory-listing line. |
1851 | Replace various columns with version control information. | |
1852 | This code, like dired, assumes UNIX -l format." | |
3d30b8bc | 1853 | (beginning-of-line) |
edcb979f | 1854 | (let ((pos (point)) limit perm date-and-file) |
2f119435 AS |
1855 | (end-of-line) |
1856 | (setq limit (point)) | |
1857 | (goto-char pos) | |
edcb979f AS |
1858 | (when |
1859 | (or | |
1860 | (re-search-forward ;; owner and group | |
1861 | "^\\(..[drwxlts-]+ \\) *[0-9]+ [^ ]+ +[^ ]+ +[0-9]+\\( .*\\)" | |
0e362f54 | 1862 | limit t) |
edcb979f | 1863 | (re-search-forward ;; only owner displayed |
0e362f54 | 1864 | "^\\(..[drwxlts-]+ \\) *[0-9]+ [^ ]+ +[0-9]+\\( .*\\)" |
edcb979f AS |
1865 | limit t) |
1866 | (re-search-forward ;; OS/2 -l format, no links, owner, group | |
1867 | "^\\(..[drwxlts-]+ \\) *[0-9]+\\( .*\\)" | |
1868 | limit t)) | |
2f119435 | 1869 | (setq perm (match-string 1) |
edcb979f AS |
1870 | date-and-file (match-string 2)) |
1871 | (setq x (substring (concat x " ") 0 10)) | |
1872 | (replace-match (concat perm x date-and-file))))) | |
3d30b8bc RS |
1873 | |
1874 | (defun vc-dired-hook () | |
0e362f54 GM |
1875 | "Reformat the listing according to version control. |
1876 | Called by dired after any portion of a vc-dired buffer has been read in." | |
3d30b8bc | 1877 | (message "Getting version information... ") |
eccceb78 | 1878 | (let (subdir filename (buffer-read-only nil) cvs-dir) |
3d30b8bc | 1879 | (goto-char (point-min)) |
0e362f54 GM |
1880 | (while (not (eobp)) |
1881 | (cond | |
3d30b8bc RS |
1882 | ;; subdir header line |
1883 | ((setq subdir (dired-get-subdir)) | |
0e362f54 GM |
1884 | ;; if the backend supports it, get the state |
1885 | ;; of all files in this directory at once | |
1886 | (let ((backend (vc-responsible-backend subdir))) | |
1887 | (if (vc-find-backend-function backend 'dir-state) | |
1888 | (vc-call-backend backend 'dir-state subdir))) | |
3d30b8bc RS |
1889 | (forward-line 1) |
1890 | ;; erase (but don't remove) the "total" line | |
0e362f54 GM |
1891 | (delete-region (point) (line-end-position)) |
1892 | (beginning-of-line) | |
1893 | (forward-line 1)) | |
1894 | ;; file line | |
3d30b8bc RS |
1895 | ((setq filename (dired-get-filename nil t)) |
1896 | (cond | |
3b574573 | 1897 | ;; subdir |
3d30b8bc | 1898 | ((file-directory-p filename) |
0e362f54 GM |
1899 | (cond |
1900 | ((member (file-name-nondirectory filename) | |
3b574573 AS |
1901 | vc-directory-exclusion-list) |
1902 | (let ((pos (point))) | |
1903 | (dired-kill-tree filename) | |
1904 | (goto-char pos) | |
1905 | (dired-kill-line))) | |
1906 | (vc-dired-terse-mode | |
633cee46 AS |
1907 | ;; Don't show directories in terse mode. Don't use |
1908 | ;; dired-kill-line to remove it, because in recursive listings, | |
1909 | ;; that would remove the directory contents as well. | |
0e362f54 | 1910 | (delete-region (line-beginning-position) |
633cee46 | 1911 | (progn (forward-line 1) (point)))) |
3b574573 AS |
1912 | ((string-match "\\`\\.\\.?\\'" (file-name-nondirectory filename)) |
1913 | (dired-kill-line)) | |
1914 | (t | |
3d30b8bc | 1915 | (vc-dired-reformat-line nil) |
3b574573 AS |
1916 | (forward-line 1)))) |
1917 | ;; ordinary file | |
0e362f54 GM |
1918 | ((and (vc-backend filename) |
1919 | (not (and vc-dired-terse-mode | |
1920 | (vc-up-to-date-p filename)))) | |
1921 | (vc-dired-reformat-line (vc-call dired-state-info filename)) | |
3d30b8bc | 1922 | (forward-line 1)) |
0e362f54 | 1923 | (t |
3d30b8bc RS |
1924 | (dired-kill-line)))) |
1925 | ;; any other line | |
3b574573 AS |
1926 | (t (forward-line 1)))) |
1927 | (vc-dired-purge)) | |
1928 | (message "Getting version information... done") | |
1929 | (save-restriction | |
1930 | (widen) | |
633cee46 AS |
1931 | (cond ((eq (count-lines (point-min) (point-max)) 1) |
1932 | (goto-char (point-min)) | |
1933 | (message "No files locked under %s" default-directory))))) | |
3b574573 AS |
1934 | |
1935 | (defun vc-dired-purge () | |
0e362f54 | 1936 | "Remove empty subdirs." |
3b574573 AS |
1937 | (let (subdir) |
1938 | (goto-char (point-min)) | |
1939 | (while (setq subdir (dired-get-subdir)) | |
1940 | (forward-line 2) | |
1941 | (if (dired-get-filename nil t) | |
1942 | (if (not (dired-next-subdir 1 t)) | |
1943 | (goto-char (point-max))) | |
1944 | (forward-line -2) | |
1945 | (if (not (string= (dired-current-directory) default-directory)) | |
1946 | (dired-do-kill-lines t "") | |
633cee46 AS |
1947 | ;; We cannot remove the top level directory. |
1948 | ;; Just make it look a little nicer. | |
1949 | (forward-line 1) | |
1950 | (kill-line) | |
3b574573 AS |
1951 | (if (not (dired-next-subdir 1 t)) |
1952 | (goto-char (point-max)))))) | |
1953 | (goto-char (point-min)))) | |
2f119435 | 1954 | |
0e362f54 GM |
1955 | (defun vc-dired-buffers-for-dir (dir) |
1956 | "Return a list of all vc-dired buffers that currently display DIR." | |
1957 | (let (result) | |
099bd78a SM |
1958 | ;; Check whether dired is loaded. |
1959 | (when (fboundp 'dired-buffers-for-dir) | |
1960 | (mapcar (lambda (buffer) | |
1961 | (with-current-buffer buffer | |
1962 | (if vc-dired-mode | |
1963 | (setq result (append result (list buffer)))))) | |
1964 | (dired-buffers-for-dir dir))) | |
0e362f54 GM |
1965 | result)) |
1966 | ||
1967 | (defun vc-dired-resynch-file (file) | |
1968 | "Update the entries for FILE in any VC Dired buffers that list it." | |
1969 | (let ((buffers (vc-dired-buffers-for-dir (file-name-directory file)))) | |
1970 | (when buffers | |
1971 | (mapcar (lambda (buffer) | |
1972 | (with-current-buffer buffer | |
1973 | (if (dired-goto-file file) | |
1974 | ;; bind vc-dired-terse-mode to nil so that | |
1975 | ;; files won't vanish when they are checked in | |
1976 | (let ((vc-dired-terse-mode nil)) | |
1977 | (dired-do-redisplay 1))))) | |
1978 | buffers)))) | |
1979 | ||
637a8ae9 | 1980 | ;;;###autoload |
0e362f54 GM |
1981 | (defun vc-directory (dir read-switches) |
1982 | "Create a buffer in VC Dired Mode for directory DIR. | |
1983 | ||
1984 | See Info node `VC Dired Mode'. | |
1985 | ||
1986 | With prefix arg READ-SWITCHES, specify a value to override | |
1987 | `dired-listing-switches' when generating the listing." | |
2f119435 | 1988 | (interactive "DDired under VC (directory): \nP") |
0e362f54 | 1989 | (let ((vc-dired-switches (concat vc-dired-listing-switches |
3b574573 | 1990 | (if vc-dired-recurse "R" "")))) |
0e362f54 | 1991 | (if read-switches |
3b574573 AS |
1992 | (setq vc-dired-switches |
1993 | (read-string "Dired listing switches: " | |
1994 | vc-dired-switches))) | |
3d30b8bc RS |
1995 | (require 'dired) |
1996 | (require 'dired-aux) | |
0e362f54 GM |
1997 | (switch-to-buffer |
1998 | (dired-internal-noselect (expand-file-name (file-name-as-directory dir)) | |
1999 | vc-dired-switches | |
3d30b8bc | 2000 | 'vc-dired-mode)))) |
e70bdc98 | 2001 | |
594722a8 ER |
2002 | |
2003 | ;; Named-configuration entry points | |
2004 | ||
0e362f54 | 2005 | (defun vc-snapshot-precondition (dir) |
099bd78a SM |
2006 | "Scan the tree below DIR, looking for non-uptodate files. |
2007 | If any file is not up-to-date, return the name of the first such file. | |
2008 | \(This means, neither snapshot creation nor retrieval is allowed.\) | |
2009 | If one or more of the files are currently visited, return `visited'. | |
2010 | Otherwise, return nil." | |
503b5c85 RS |
2011 | (let ((status nil)) |
2012 | (catch 'vc-locked-example | |
2013 | (vc-file-tree-walk | |
0e362f54 GM |
2014 | dir |
2015 | (lambda (f) | |
2016 | (if (not (vc-up-to-date-p f)) (throw 'vc-locked-example f) | |
2017 | (if (get-file-buffer f) (setq status 'visited))))) | |
503b5c85 | 2018 | status))) |
594722a8 | 2019 | |
637a8ae9 | 2020 | ;;;###autoload |
0e362f54 | 2021 | (defun vc-create-snapshot (dir name branchp) |
6f41eeb5 | 2022 | "Descending recursively from DIR, make a snapshot called NAME. |
0e362f54 GM |
2023 | For each registered file, the version level of its latest version |
2024 | becomes part of the named configuration. If the prefix argument | |
2025 | BRANCHP is given, the snapshot is made as a new branch and the files | |
2026 | are checked out in that new branch." | |
2027 | (interactive | |
2028 | (list (read-file-name "Directory: " default-directory default-directory t) | |
2029 | (read-string "New snapshot name: ") | |
2030 | current-prefix-arg)) | |
2031 | (message "Making %s... " (if branchp "branch" "snapshot")) | |
2032 | (if (file-directory-p dir) (setq dir (file-name-as-directory dir))) | |
2033 | (vc-call-backend (vc-responsible-backend dir) | |
2034 | 'create-snapshot dir name branchp) | |
2035 | (message "Making %s... done" (if branchp "branch" "snapshot"))) | |
2036 | ||
2037 | (defun vc-default-create-snapshot (backend dir name branchp) | |
6f41eeb5 | 2038 | (when branchp |
0e362f54 GM |
2039 | (error "VC backend %s does not support module branches" backend)) |
2040 | (let ((result (vc-snapshot-precondition dir))) | |
503b5c85 | 2041 | (if (stringp result) |
0e362f54 | 2042 | (error "File %s is not up-to-date" result) |
1dabb4e6 | 2043 | (vc-file-tree-walk |
0e362f54 GM |
2044 | dir |
2045 | (lambda (f) | |
2046 | (vc-call assign-name f name)))))) | |
594722a8 | 2047 | |
637a8ae9 | 2048 | ;;;###autoload |
0e362f54 | 2049 | (defun vc-retrieve-snapshot (dir name) |
099bd78a SM |
2050 | "Descending recursively from DIR, retrieve the snapshot called NAME. |
2051 | If NAME is empty, it refers to the latest versions. | |
2052 | If locking is used for the files in DIR, then there must not be any | |
2053 | locked files at or below DIR (but if NAME is empty, locked files are | |
2054 | allowed and simply skipped)." | |
0e362f54 GM |
2055 | (interactive |
2056 | (list (read-file-name "Directory: " default-directory default-directory t) | |
2057 | (read-string "Snapshot name to retrieve (default latest versions): "))) | |
2058 | (let ((update (yes-or-no-p "Update any affected buffers? ")) | |
2059 | (msg (if (or (not name) (string= name "")) | |
2060 | (format "Updating %s... " (abbreviate-file-name dir)) | |
2061 | (format "Retrieving snapshot into %s... " | |
2062 | (abbreviate-file-name dir))))) | |
2063 | (message msg) | |
2064 | (vc-call-backend (vc-responsible-backend dir) | |
2065 | 'retrieve-snapshot dir name update) | |
2066 | (message (concat msg "done")))) | |
2067 | ||
2068 | (defun vc-default-retrieve-snapshot (backend dir name update) | |
2069 | (if (string= name "") | |
2070 | (progn | |
2071 | (vc-file-tree-walk | |
2072 | dir | |
2073 | (lambda (f) (and | |
2074 | (vc-up-to-date-p f) | |
2075 | (vc-error-occurred | |
2076 | (vc-call checkout f nil "") | |
2077 | (if update (vc-resynch-buffer f t t))))))) | |
2078 | (let ((result (vc-snapshot-precondition dir))) | |
2079 | (if (stringp result) | |
2080 | (error "File %s is locked" result) | |
2081 | (setq update (and (eq result 'visited) update)) | |
2082 | (vc-file-tree-walk | |
2083 | dir | |
2084 | (lambda (f) (and | |
2085 | (vc-error-occurred | |
2086 | (vc-call checkout f nil name) | |
2087 | (if update (vc-resynch-buffer f t t)))))))))) | |
594722a8 ER |
2088 | |
2089 | ;; Miscellaneous other entry points | |
2090 | ||
637a8ae9 | 2091 | ;;;###autoload |
594722a8 ER |
2092 | (defun vc-print-log () |
2093 | "List the change log of the current buffer in a window." | |
2094 | (interactive) | |
b6909007 AS |
2095 | (vc-ensure-vc-buffer) |
2096 | (let ((file buffer-file-name)) | |
0e362f54 | 2097 | (vc-setup-buffer nil) |
b6909007 | 2098 | (setq default-directory (file-name-directory file)) |
0e362f54 GM |
2099 | (vc-call print-log file) |
2100 | (pop-to-buffer (current-buffer)) | |
2101 | (if (fboundp 'log-view-mode) (log-view-mode)) | |
2102 | (vc-exec-after | |
2103 | `(progn | |
2104 | (goto-char (point-max)) (forward-line -1) | |
2105 | (while (looking-at "=*\n") | |
2106 | (delete-char (- (match-end 0) (match-beginning 0))) | |
2107 | (forward-line -1)) | |
2108 | (goto-char (point-min)) | |
2109 | (if (looking-at "[\b\t\n\v\f\r ]+") | |
2110 | (delete-char (- (match-end 0) (match-beginning 0)))) | |
2111 | (shrink-window-if-larger-than-buffer) | |
2112 | ;; move point to the log entry for the current version | |
2113 | (if (fboundp 'log-view-goto-rev) | |
2114 | (log-view-goto-rev ',(vc-workfile-version file)) | |
2115 | (if (vc-find-backend-function ',(vc-backend file) 'show-log-entry) | |
6f41eeb5 DL |
2116 | (vc-call-backend ',(vc-backend file) |
2117 | 'show-log-entry | |
0e362f54 | 2118 | ',(vc-workfile-version file)))))))) |
594722a8 | 2119 | |
0ab66291 AS |
2120 | (defun vc-default-comment-history (backend file) |
2121 | "Return a string with all log entries that were made under BACKEND for FILE." | |
2122 | (if (vc-find-backend-function backend 'print-log) | |
2123 | (with-temp-buffer | |
2124 | (vc-call print-log file) | |
2125 | (vc-call wash-log file) | |
2126 | (buffer-string)))) | |
2127 | ||
2128 | (defun vc-default-wash-log (backend file) | |
2129 | "Remove all non-comment information from log output. | |
2130 | This default implementation works for RCS logs; backends should override | |
2131 | it if their logs are not in RCS format." | |
2132 | (let ((separator (concat "^-+\nrevision [0-9.]+\ndate: .*\n" | |
2133 | "\\(branches: .*;\n\\)?" | |
2134 | "\\(\\*\\*\\* empty log message \\*\\*\\*\n\\)?"))) | |
2135 | (goto-char (point-max)) (forward-line -1) | |
2136 | (while (looking-at "=*\n") | |
2137 | (delete-char (- (match-end 0) (match-beginning 0))) | |
2138 | (forward-line -1)) | |
2139 | (goto-char (point-min)) | |
2140 | (if (looking-at "[\b\t\n\v\f\r ]+") | |
2141 | (delete-char (- (match-end 0) (match-beginning 0)))) | |
2142 | (goto-char (point-min)) | |
2143 | (re-search-forward separator nil t) | |
2144 | (delete-region (point-min) (point)) | |
2145 | (while (re-search-forward separator nil t) | |
2146 | (delete-region (match-beginning 0) (match-end 0))))) | |
2147 | ||
637a8ae9 | 2148 | ;;;###autoload |
594722a8 | 2149 | (defun vc-revert-buffer () |
18483cf0 | 2150 | "Revert the current buffer's file back to the version it was based on. |
9c95ac44 | 2151 | This asks for confirmation if the buffer contents are not identical |
7849e179 SM |
2152 | to that version. This function does not automatically pick up newer |
2153 | changes found in the master file; use \\[universal-argument] \\[vc-next-action] to do so." | |
594722a8 | 2154 | (interactive) |
b6909007 | 2155 | (vc-ensure-vc-buffer) |
594722a8 | 2156 | (let ((file buffer-file-name) |
221cc4f4 RS |
2157 | ;; This operation should always ask for confirmation. |
2158 | (vc-suppress-confirm nil) | |
0e362f54 GM |
2159 | (obuf (current-buffer))) |
2160 | (unless (vc-workfile-unchanged-p file) | |
2161 | (vc-diff nil t) | |
2162 | (vc-exec-after `(message nil)) | |
2163 | (unwind-protect | |
2164 | (if (not (yes-or-no-p "Discard changes? ")) | |
2165 | (error "Revert canceled")) | |
7849e179 SM |
2166 | (if (and (window-dedicated-p (selected-window)) |
2167 | (one-window-p t)) | |
2168 | (make-frame-invisible) | |
0e362f54 | 2169 | (delete-window)))) |
751fa747 | 2170 | (set-buffer obuf) |
0e362f54 GM |
2171 | ;; Do the reverting |
2172 | (message "Reverting %s..." file) | |
045e1aa5 | 2173 | (vc-revert-file file) |
0e362f54 | 2174 | (message "Reverting %s...done" file))) |
594722a8 | 2175 | |
045e1aa5 AS |
2176 | (defun vc-revert-file (file) |
2177 | "Revert FILE back to the version it was based on." | |
2178 | ;; TODO: With local version caching, this function will get the | |
2179 | ;; base version locally and not from the server. | |
2180 | (with-vc-properties | |
2181 | file | |
2182 | (vc-call revert file) | |
2183 | `((vc-state up-to-date) | |
2184 | (vc-checkout-time ,(nth 5 (file-attributes file))))) | |
2185 | (vc-resynch-buffer file t t)) | |
2186 | ||
637a8ae9 | 2187 | ;;;###autoload |
594722a8 | 2188 | (defun vc-cancel-version (norevert) |
34291cd2 | 2189 | "Get rid of most recently checked in version of this file. |
099bd78a | 2190 | A prefix argument NOREVERT means do not revert the buffer afterwards." |
594722a8 | 2191 | (interactive "P") |
b6909007 | 2192 | (vc-ensure-vc-buffer) |
099bd78a SM |
2193 | (let* ((file (buffer-file-name)) |
2194 | (backend (vc-backend file)) | |
2195 | (target (vc-workfile-version file)) | |
7e48e092 | 2196 | (config (current-window-configuration)) done) |
0e362f54 | 2197 | (cond |
099bd78a | 2198 | ((not (vc-find-backend-function backend 'cancel-version)) |
0e362f54 | 2199 | (error "Sorry, canceling versions is not supported under %s" backend)) |
099bd78a | 2200 | ((not (vc-call latest-on-branch-p file)) |
0e362f54 | 2201 | (error "This is not the latest version; VC cannot cancel it")) |
099bd78a | 2202 | ((not (vc-up-to-date-p file)) |
0e362f54 | 2203 | (error (substitute-command-keys "File is not up to date; use \\[vc-revert-buffer] to discard changes")))) |
7e48e092 | 2204 | (if (null (yes-or-no-p (format "Remove version %s from master? " target))) |
099bd78a | 2205 | (error "Aborted") |
0e362f54 GM |
2206 | (setq norevert (or norevert (not |
2207 | (yes-or-no-p "Revert buffer to most recent remaining version? ")))) | |
2208 | ||
099bd78a SM |
2209 | (message "Removing last change from %s..." file) |
2210 | (with-vc-properties | |
2211 | file | |
2212 | (vc-call cancel-version file norevert) | |
2213 | `((vc-state ,(if norevert 'edited 'up-to-date)) | |
2214 | (vc-checkout-time ,(if norevert | |
2215 | 0 | |
2216 | (nth 5 (file-attributes file)))) | |
2217 | (vc-workfile-version nil))) | |
2218 | (message "Removing last change from %s...done" file) | |
2219 | ||
2220 | (cond | |
2221 | (norevert ;; clear version headers and mark the buffer modified | |
2222 | (set-visited-file-name file) | |
2223 | (when (not vc-make-backup-files) | |
2224 | ;; inhibit backup for this buffer | |
2225 | (make-local-variable 'backup-inhibited) | |
2226 | (setq backup-inhibited t)) | |
2227 | (setq buffer-read-only nil) | |
2228 | (vc-clear-headers) | |
2229 | (vc-mode-line file) | |
2230 | (vc-dired-resynch-file file)) | |
2231 | (t ;; revert buffer to file on disk | |
2232 | (vc-resynch-buffer file t t))) | |
0e362f54 GM |
2233 | (message "Version %s has been removed from the master" target)))) |
2234 | ||
1d502d5a AS |
2235 | ;;;autoload |
2236 | (defun vc-switch-backend (file backend) | |
7849e179 | 2237 | "Make BACKEND the current version control system for FILE. |
1d502d5a AS |
2238 | FILE must already be registered in BACKEND. The change is not |
2239 | permanent, only for the current session. This function only changes | |
7849e179 SM |
2240 | VC's perspective on FILE, it does not register or unregister it. |
2241 | By default, this command cycles through the registered backends. | |
2242 | To get a prompt, use a prefix argument." | |
2243 | (interactive | |
1d502d5a AS |
2244 | (list |
2245 | buffer-file-name | |
7849e179 SM |
2246 | (let ((backend (vc-backend buffer-file-name)) |
2247 | (backends nil)) | |
2248 | ;; Find the registered backends. | |
2249 | (dolist (backend vc-handled-backends) | |
2250 | (when (vc-call-backend backend 'registered buffer-file-name) | |
2251 | (push backend backends))) | |
2252 | ;; Find the next backend. | |
ceec5a0c | 2253 | (let ((def (car (delq backend (append (memq backend backends) backends)))) |
7849e179 SM |
2254 | (others (delete backend backends))) |
2255 | (cond | |
2256 | ((null others) (error "No other backend to switch to")) | |
2257 | (current-prefix-arg | |
2258 | (intern | |
2259 | (upcase | |
2260 | (completing-read | |
2261 | (format "Switch to backend [%s]: " def) | |
2262 | (mapcar (lambda (b) (list (downcase (symbol-name b)))) backends) | |
2263 | nil t nil nil (downcase (symbol-name def)))))) | |
2264 | (t def)))))) | |
ceec5a0c SM |
2265 | (unless (eq backend (vc-backend file)) |
2266 | (unless (vc-call-backend backend 'registered file) | |
2267 | (error "%s is not registered in %s" file backend)) | |
2268 | (vc-file-clearprops file) | |
2269 | (vc-file-setprop file 'vc-backend backend) | |
2270 | ;; Force recomputation of the state | |
2271 | (vc-call-backend backend 'registered file) | |
2272 | (vc-mode-line file))) | |
1d502d5a | 2273 | |
1d502d5a AS |
2274 | ;;;autoload |
2275 | (defun vc-transfer-file (file new-backend) | |
ceec5a0c | 2276 | "Transfer FILE to another version control system NEW-BACKEND. |
1d502d5a | 2277 | If NEW-BACKEND has a higher precedence than FILE's current backend |
ceec5a0c | 2278 | \(i.e. it comes earlier in `vc-handled-backends'), then register FILE in |
1d502d5a AS |
2279 | NEW-BACKEND, using the version number from the current backend as the |
2280 | base level. If NEW-BACKEND has a lower precedence than the current | |
2281 | backend, then commit all changes that were made under the current | |
2282 | backend to NEW-BACKEND, and unregister FILE from the current backend. | |
2283 | \(If FILE is not yet registered under NEW-BACKEND, register it.)" | |
72cfc5fb AS |
2284 | (let* ((old-backend (vc-backend file)) |
2285 | (edited (memq (vc-state file) '(edited needs-merge))) | |
2286 | (registered (vc-call-backend new-backend 'registered file)) | |
2287 | (move | |
2288 | (and registered ; Never move if not registered in new-backend yet. | |
2289 | ;; move if new-backend comes later in vc-handled-backends | |
2290 | (or (memq new-backend (memq old-backend vc-handled-backends)) | |
2291 | (y-or-n-p "Final transfer ? ")))) | |
2292 | (comment nil)) | |
1d502d5a | 2293 | (if (eq old-backend new-backend) |
72cfc5fb AS |
2294 | (error "%s is the current backend of %s" new-backend file)) |
2295 | (if registered | |
2296 | (set-file-modes file (logior (file-modes file) 128)) | |
2297 | ;; `registered' might have switched under us. | |
2298 | (vc-switch-backend file old-backend) | |
2299 | (let ((copy (and edited (make-temp-name file))) | |
2300 | (rev (vc-workfile-version file))) | |
2301 | ;; Go back to the base unmodified file. | |
2302 | (unwind-protect | |
2303 | (progn | |
2304 | (when copy (copy-file file copy)) ; (vc-revert-file file)) | |
2305 | ; TODO: uncomment when we | |
2306 | ; have local version caching | |
2307 | (vc-call-backend new-backend 'receive-file file rev)) | |
2308 | (when copy | |
2309 | (vc-switch-backend file new-backend) | |
2310 | (unless (eq (vc-checkout-model file) 'implicit) | |
2311 | (vc-checkout file t nil)) | |
2312 | (rename-file copy file 'ok-if-already-exists))))) | |
2313 | (when move | |
2314 | (vc-switch-backend file old-backend) | |
2315 | (setq comment (vc-call comment-history file)) | |
2316 | (vc-call unregister file)) | |
2317 | (vc-switch-backend file new-backend) | |
2318 | (when (or move edited) | |
1d502d5a | 2319 | (vc-file-setprop file 'vc-state 'edited) |
0ab66291 | 2320 | (vc-checkin file nil comment (stringp comment))))) |
1d502d5a | 2321 | |
72cfc5fb AS |
2322 | (defun vc-default-unregister (backend file) |
2323 | "Default implementation of `vc-unregister', signals an error." | |
2324 | (error "Unregistering files is not supported for %s" backend)) | |
2325 | ||
2326 | (defun vc-default-receive-file (backend file rev) | |
2327 | "Let BACKEND receive FILE from another version control system." | |
2328 | (vc-call-backend backend 'register file rev "")) | |
2329 | ||
0e362f54 GM |
2330 | (defun vc-rename-master (oldmaster newfile templates) |
2331 | "Rename OLDMASTER to be the master file for NEWFILE based on TEMPLATES." | |
2332 | (let* ((dir (file-name-directory (expand-file-name oldmaster))) | |
2333 | (newdir (or (file-name-directory newfile) "")) | |
2334 | (newbase (file-name-nondirectory newfile)) | |
2335 | (masters | |
2336 | ;; List of potential master files for `newfile' | |
2337 | (mapcar | |
2338 | (lambda (s) (vc-possible-master s newdir newbase)) | |
2339 | templates))) | |
2340 | (if (or (file-symlink-p oldmaster) | |
2341 | (file-symlink-p (file-name-directory oldmaster))) | |
2342 | (error "This unsafe in the presence of symbolic links")) | |
2343 | (rename-file | |
2344 | oldmaster | |
2345 | (catch 'found | |
2346 | ;; If possible, keep the master file in the same directory. | |
2347 | (mapcar (lambda (f) | |
2348 | (if (and f (string= (file-name-directory (expand-file-name f)) | |
2349 | dir)) | |
2350 | (throw 'found f))) | |
2351 | masters) | |
2352 | ;; If not, just use the first possible place. | |
2353 | (mapcar (lambda (f) | |
2354 | (and f | |
2355 | (or (not (setq dir (file-name-directory f))) | |
2356 | (file-directory-p dir)) | |
2357 | (throw 'found f))) | |
2358 | masters) | |
2359 | (error "New file lacks a version control directory"))))) | |
594722a8 | 2360 | |
29fc1ce9 | 2361 | ;;;###autoload |
594722a8 | 2362 | (defun vc-rename-file (old new) |
34291cd2 RS |
2363 | "Rename file OLD to NEW, and rename its master file likewise." |
2364 | (interactive "fVC rename file: \nFRename to: ") | |
80688f5c RS |
2365 | ;; There are several ways of renaming files under CVS 1.3, but they all |
2366 | ;; have serious disadvantages. See the FAQ (available from think.com in | |
2367 | ;; pub/cvs/). I'd rather send the user an error, than do something he might | |
2368 | ;; consider to be wrong. When the famous, long-awaited rename database is | |
2369 | ;; implemented things might change for the better. This is unlikely to occur | |
2370 | ;; until CVS 2.0 is released. --ceder 1994-01-23 21:27:51 | |
0e362f54 GM |
2371 | (let ((oldbuf (get-file-buffer old)) |
2372 | (backend (vc-backend old))) | |
2373 | (unless (or (null backend) (vc-find-backend-function backend 'rename-file)) | |
2374 | (error "Renaming files under %s is not supported in VC" backend)) | |
d52f0de9 | 2375 | (if (and oldbuf (buffer-modified-p oldbuf)) |
590cc449 | 2376 | (error "Please save files before moving them")) |
594722a8 | 2377 | (if (get-file-buffer new) |
590cc449 | 2378 | (error "Already editing new file name")) |
d52f0de9 RS |
2379 | (if (file-exists-p new) |
2380 | (error "New file already exists")) | |
0e362f54 GM |
2381 | (when backend |
2382 | (if (and backend (not (vc-up-to-date-p old))) | |
2383 | (error "Please check in files before moving them")) | |
2384 | (vc-call-backend backend 'rename-file old new)) | |
2385 | ;; Move the actual file (unless the backend did it already) | |
2386 | (if (or (not backend) (file-exists-p old)) | |
2387 | (rename-file old new)) | |
2388 | ;; ?? Renaming a file might change its contents due to keyword expansion. | |
2389 | ;; We should really check out a new copy if the old copy was precisely equal | |
2390 | ;; to some checked in version. However, testing for this is tricky.... | |
594722a8 | 2391 | (if oldbuf |
0e362f54 | 2392 | (with-current-buffer oldbuf |
4c145b9e RS |
2393 | (let ((buffer-read-only buffer-read-only)) |
2394 | (set-visited-file-name new)) | |
2395 | (vc-backend new) | |
2396 | (vc-mode-line new) | |
0e362f54 GM |
2397 | (set-buffer-modified-p nil))))) |
2398 | ||
2399 | ;; Only defined in very recent Emacsen | |
2400 | (defvar small-temporary-file-directory nil) | |
594722a8 | 2401 | |
637a8ae9 | 2402 | ;;;###autoload |
f35ecf88 | 2403 | (defun vc-update-change-log (&rest args) |
0e362f54 | 2404 | "Find change log file and add entries from recent version control logs. |
d68e6990 | 2405 | Normally, find log entries for all registered files in the default |
0e362f54 | 2406 | directory. |
d68e6990 | 2407 | |
099bd78a | 2408 | With prefix arg of \\[universal-argument], only find log entries for the current buffer's file. |
d68e6990 RS |
2409 | |
2410 | With any numeric prefix arg, find log entries for all currently visited | |
2411 | files that are under version control. This puts all the entries in the | |
2412 | log for the default directory, which may not be appropriate. | |
2413 | ||
099bd78a | 2414 | From a program, any ARGS are assumed to be filenames for which |
0e362f54 | 2415 | log entries should be gathered." |
67242a23 RM |
2416 | (interactive |
2417 | (cond ((consp current-prefix-arg) ;C-u | |
2418 | (list buffer-file-name)) | |
2419 | (current-prefix-arg ;Numeric argument. | |
2420 | (let ((files nil) | |
2421 | (buffers (buffer-list)) | |
2422 | file) | |
2423 | (while buffers | |
2424 | (setq file (buffer-file-name (car buffers))) | |
f3c61d82 | 2425 | (and file (vc-backend file) |
4b40fdea | 2426 | (setq files (cons file files))) |
67242a23 | 2427 | (setq buffers (cdr buffers))) |
4b40fdea PE |
2428 | files)) |
2429 | (t | |
0e362f54 GM |
2430 | ;; Don't supply any filenames to backend; this means |
2431 | ;; it should find all relevant files relative to | |
2432 | ;; the default-directory. | |
73a9679c | 2433 | nil))) |
0e362f54 GM |
2434 | (vc-call-backend (vc-responsible-backend default-directory) |
2435 | 'update-changelog args)) | |
2436 | ||
2437 | (defun vc-default-update-changelog (backend files) | |
099bd78a SM |
2438 | "Default implementation of update-changelog. |
2439 | Uses `rcs2log' which only works for RCS and CVS." | |
0e362f54 | 2440 | ;; FIXME: We (c|sh)ould add support for cvs2cl |
449decf5 | 2441 | (let ((odefault default-directory) |
124c852b RS |
2442 | (changelog (find-change-log)) |
2443 | ;; Presumably not portable to non-Unixy systems, along with rcs2log: | |
0e362f54 GM |
2444 | (tempfile (funcall |
2445 | (if (fboundp 'make-temp-file) 'make-temp-file 'make-temp-name) | |
57c298c4 EZ |
2446 | (expand-file-name "vc" |
2447 | (or small-temporary-file-directory | |
2448 | temporary-file-directory)))) | |
b91916f3 | 2449 | (full-name (or add-log-full-name |
8172cd86 AS |
2450 | (user-full-name) |
2451 | (user-login-name) | |
2452 | (format "uid%d" (number-to-string (user-uid))))) | |
b91916f3 RS |
2453 | (mailing-address (or add-log-mailing-address |
2454 | user-mail-address))) | |
124c852b | 2455 | (find-file-other-window changelog) |
41dfb835 RS |
2456 | (barf-if-buffer-read-only) |
2457 | (vc-buffer-sync) | |
2458 | (undo-boundary) | |
2459 | (goto-char (point-min)) | |
2460 | (push-mark) | |
2461 | (message "Computing change log entries...") | |
4b40fdea | 2462 | (message "Computing change log entries... %s" |
124c852b RS |
2463 | (unwind-protect |
2464 | (progn | |
0e362f54 | 2465 | (setq default-directory odefault) |
6f41eeb5 DL |
2466 | (if (eq 0 (apply 'call-process |
2467 | (expand-file-name "rcs2log" | |
2468 | exec-directory) | |
0e362f54 GM |
2469 | nil (list t tempfile) nil |
2470 | "-c" changelog | |
2471 | "-u" (concat (vc-user-login-name) | |
2472 | "\t" full-name | |
2473 | "\t" mailing-address) | |
2474 | (mapcar | |
2475 | (lambda (f) | |
2476 | (file-relative-name | |
2477 | (if (file-name-absolute-p f) | |
2478 | f | |
2479 | (concat odefault f)))) | |
2480 | files))) | |
2481 | "done" | |
124c852b RS |
2482 | (pop-to-buffer |
2483 | (set-buffer (get-buffer-create "*vc*"))) | |
2484 | (erase-buffer) | |
2485 | (insert-file tempfile) | |
2486 | "failed")) | |
0e362f54 | 2487 | (setq default-directory (file-name-directory changelog)) |
124c852b | 2488 | (delete-file tempfile))))) |
7d2d9482 | 2489 | |
0e362f54 | 2490 | ;;; Annotate functionality |
7d2d9482 | 2491 | |
f80f7bc2 RS |
2492 | ;; Declare globally instead of additional parameter to |
2493 | ;; temp-buffer-show-function (not possible to pass more than one | |
2494 | ;; parameter). | |
099bd78a SM |
2495 | (defvar vc-annotate-ratio nil "Global variable.") |
2496 | (defvar vc-annotate-backend nil "Global variable.") | |
0e362f54 GM |
2497 | |
2498 | (defun vc-annotate-get-backend (buffer) | |
099bd78a SM |
2499 | "Return the backend matching \"Annotate\" buffer BUFFER. |
2500 | Return NIL if no match made. Associations are made based on | |
0e362f54 GM |
2501 | `vc-annotate-buffers'." |
2502 | (cdr (assoc buffer vc-annotate-buffers))) | |
7d2d9482 | 2503 | |
0e362f54 GM |
2504 | (define-derived-mode vc-annotate-mode fundamental-mode "Annotate" |
2505 | "Major mode for buffers displaying output from the `annotate' command. | |
7d2d9482 RS |
2506 | |
2507 | You can use the mode-specific menu to alter the time-span of the used | |
2508 | colors. See variable `vc-annotate-menu-elements' for customizing the | |
2509 | menu items." | |
7d2d9482 RS |
2510 | (vc-annotate-add-menu)) |
2511 | ||
2512 | (defun vc-annotate-display-default (&optional event) | |
2513 | "Use the default color spectrum for VC Annotate mode." | |
0e362f54 | 2514 | (interactive "e") |
f80f7bc2 | 2515 | (message "Redisplaying annotation...") |
0e362f54 | 2516 | (vc-annotate-display (current-buffer) |
6f41eeb5 | 2517 | nil |
0e362f54 | 2518 | (vc-annotate-get-backend (current-buffer))) |
f80f7bc2 | 2519 | (message "Redisplaying annotation...done")) |
7d2d9482 RS |
2520 | |
2521 | (defun vc-annotate-add-menu () | |
0e362f54 GM |
2522 | "Add the menu 'Annotate' to the menu bar in VC-Annotate mode." |
2523 | (setq vc-annotate-mode-menu (make-sparse-keymap "Annotate")) | |
2524 | (define-key vc-annotate-mode-map [menu-bar vc-annotate-mode] | |
2525 | (cons "VC-Annotate" vc-annotate-mode-menu)) | |
7d2d9482 RS |
2526 | (define-key vc-annotate-mode-menu [default] |
2527 | '("Default" . vc-annotate-display-default)) | |
2528 | (let ((menu-elements vc-annotate-menu-elements)) | |
2529 | (while menu-elements | |
2530 | (let* ((element (car menu-elements)) | |
0e362f54 GM |
2531 | (days (round (* element |
2532 | (vc-annotate-car-last-cons vc-annotate-color-map) | |
7d2d9482 RS |
2533 | 0.7585)))) |
2534 | (setq menu-elements (cdr menu-elements)) | |
2535 | (define-key vc-annotate-mode-menu | |
2536 | (vector days) | |
2537 | (cons (format "Span %d days" | |
2538 | days) | |
2539 | `(lambda () | |
2540 | ,(format "Use colors spanning %d days" days) | |
f80f7bc2 RS |
2541 | (interactive) |
2542 | (message "Redisplaying annotation...") | |
2543 | (vc-annotate-display | |
2544 | (get-buffer (buffer-name)) | |
0e362f54 GM |
2545 | (vc-annotate-time-span vc-annotate-color-map ,element) |
2546 | (vc-annotate-get-backend (current-buffer))) | |
f80f7bc2 | 2547 | (message "Redisplaying annotation...done")))))))) |
594722a8 | 2548 | |
0e362f54 GM |
2549 | |
2550 | ;;;; (defun vc-BACKEND-annotate-command (file buffer) ...) | |
2551 | ;;;; Execute "annotate" on FILE by using `call-process' and insert | |
2552 | ;;;; the contents in BUFFER. | |
2553 | ||
7d2d9482 RS |
2554 | ;;;###autoload |
2555 | (defun vc-annotate (ratio) | |
0e362f54 GM |
2556 | "Display the result of the \"Annotate\" command using colors. |
2557 | \"Annotate\" is defined by `vc-BACKEND-annotate-command'. New lines | |
2558 | are displayed in red, old in blue. A prefix argument specifies a | |
2559 | factor for stretching the time scale. | |
7d2d9482 RS |
2560 | |
2561 | `vc-annotate-menu-elements' customizes the menu elements of the | |
2562 | mode-specific menu. `vc-annotate-color-map' and | |
2563 | `vc-annotate-very-old-color' defines the mapping of time to | |
2564 | colors. `vc-annotate-background' specifies the background color." | |
2565 | (interactive "p") | |
b6909007 | 2566 | (vc-ensure-vc-buffer) |
7d2d9482 | 2567 | (message "Annotating...") |
0e362f54 | 2568 | (let ((temp-buffer-name (concat "*Annotate " (buffer-name) "*")) |
7d2d9482 | 2569 | (temp-buffer-show-function 'vc-annotate-display) |
0e362f54 GM |
2570 | (vc-annotate-ratio ratio) |
2571 | (vc-annotate-backend (vc-backend (buffer-file-name)))) | |
099bd78a SM |
2572 | (if (not (vc-find-backend-function vc-annotate-backend 'annotate-command)) |
2573 | (error "Sorry, annotating is not implemented for %s" | |
2574 | vc-annotate-backend)) | |
0e362f54 GM |
2575 | (with-output-to-temp-buffer temp-buffer-name |
2576 | (vc-call-backend vc-annotate-backend 'annotate-command | |
2577 | (file-name-nondirectory (buffer-file-name)) | |
2578 | (get-buffer temp-buffer-name))) | |
2579 | ;; Don't use the temp-buffer-name until the buffer is created | |
2580 | ;; (only after `with-output-to-temp-buffer'.) | |
6f41eeb5 | 2581 | (setq vc-annotate-buffers |
0e362f54 GM |
2582 | (append vc-annotate-buffers |
2583 | (list (cons (get-buffer temp-buffer-name) vc-annotate-backend))))) | |
7d2d9482 RS |
2584 | (message "Annotating... done")) |
2585 | ||
0e362f54 | 2586 | |
f70419a8 RS |
2587 | (defun vc-annotate-car-last-cons (a-list) |
2588 | "Return car of last cons in association list A-LIST." | |
2589 | (if (not (eq nil (cdr a-list))) | |
2590 | (vc-annotate-car-last-cons (cdr a-list)) | |
2591 | (car (car a-list)))) | |
2592 | ||
2593 | (defun vc-annotate-time-span (a-list span &optional quantize) | |
6f41eeb5 | 2594 | "Apply factor SPAN to the time-span of association list A-LIST. |
0e362f54 GM |
2595 | Return the new alist. |
2596 | Optionally quantize to the factor of QUANTIZE." | |
7d2d9482 | 2597 | ;; Apply span to each car of every cons |
0e362f54 | 2598 | (if (not (eq nil a-list)) |
f70419a8 RS |
2599 | (append (list (cons (* (car (car a-list)) span) |
2600 | (cdr (car a-list)))) | |
0e362f54 GM |
2601 | (vc-annotate-time-span (nthcdr (or quantize ; optional |
2602 | 1) ; Default to cdr | |
f70419a8 RS |
2603 | a-list) span quantize)))) |
2604 | ||
2605 | (defun vc-annotate-compcar (threshold a-list) | |
0e362f54 GM |
2606 | "Test successive cons cells of association list A-LIST against THRESHOLD. |
2607 | Return the first cons cell which car is not less than THRESHOLD, | |
2608 | nil otherwise" | |
f70419a8 RS |
2609 | (let ((i 1) |
2610 | (tmp-cons (car a-list))) | |
2611 | (while (and tmp-cons (< (car tmp-cons) threshold)) | |
2612 | (setq tmp-cons (car (nthcdr i a-list))) | |
2613 | (setq i (+ i 1))) | |
2614 | tmp-cons)) ; Return the appropriate value | |
2615 | ||
7d2d9482 | 2616 | |
0e362f54 GM |
2617 | ;;;; (defun vc-BACKEND-annotate-difference (point) ...) |
2618 | ;;;; | |
2619 | ;;;; Return the difference between the age of the line at point and | |
2620 | ;;;; the current time. Return NIL if there is no more comparison to | |
2621 | ;;;; be made in the buffer. Return value as defined for | |
2622 | ;;;; `current-time'. You can safely assume that point is placed at | |
2623 | ;;;; the beginning of each line, starting at `point-min'. The buffer | |
2624 | ;;;; that point is placed in is the Annotate output, as defined by | |
2625 | ;;;; the relevant backend. | |
2626 | ||
2627 | (defun vc-annotate-display (buffer &optional color-map backend) | |
099bd78a SM |
2628 | "Do the VC-Annotate display in BUFFER using COLOR-MAP. |
2629 | The original annotating file is supposed to be handled by BACKEND. | |
2630 | If BACKEND is NIL, variable VC-ANNOTATE-BACKEND is used instead. | |
2631 | This function is destructive on VC-ANNOTATE-BACKEND when BACKEND is non-nil." | |
7d2d9482 | 2632 | |
f80f7bc2 RS |
2633 | ;; Handle the case of the global variable vc-annotate-ratio being |
2634 | ;; set. This variable is used to pass information from function | |
2635 | ;; vc-annotate since it is not possible to use another parameter | |
0e362f54 | 2636 | ;; (see temp-buffer-show-function). |
7d2d9482 | 2637 | (if (and (not color-map) vc-annotate-ratio) |
f80f7bc2 RS |
2638 | ;; This will only be true if called from vc-annotate with ratio |
2639 | ;; being non-nil. | |
2640 | (setq color-map (vc-annotate-time-span vc-annotate-color-map | |
2641 | vc-annotate-ratio))) | |
0e362f54 GM |
2642 | (set-buffer buffer) |
2643 | (display-buffer buffer) | |
2644 | (if (not vc-annotate-mode) ; Turn on vc-annotate-mode if not done | |
2645 | (vc-annotate-mode)) | |
2646 | (goto-char (point-min)) ; Position at the top of the buffer. | |
2647 | ;; Delete old overlays | |
2648 | (mapcar | |
2649 | (lambda (overlay) | |
2650 | (if (overlay-get overlay 'vc-annotation) | |
2651 | (delete-overlay overlay))) | |
2652 | (overlays-in (point-min) (point-max))) | |
2653 | (goto-char (point-min)) ; Position at the top of the buffer. | |
2654 | ||
2655 | (if backend (setq vc-annotate-backend backend)) ; Destructive on `vc-annotate-backend' | |
2656 | ||
2657 | (let ((difference (vc-call-backend vc-annotate-backend 'annotate-difference (point)))) | |
2658 | (while difference | |
2659 | (let* | |
2660 | ((color (or (vc-annotate-compcar | |
2661 | difference (or color-map vc-annotate-color-map)) | |
2662 | (cons nil vc-annotate-very-old-color))) | |
2663 | ;; substring from index 1 to remove any leading `#' in the name | |
2664 | (face-name (concat "vc-annotate-face-" (substring (cdr color) 1))) | |
2665 | ;; Make the face if not done. | |
2666 | (face (or (intern-soft face-name) | |
2667 | (let ((tmp-face (make-face (intern face-name)))) | |
2668 | (set-face-foreground tmp-face (cdr color)) | |
2669 | (if vc-annotate-background | |
2670 | (set-face-background tmp-face vc-annotate-background)) | |
2671 | tmp-face))) ; Return the face | |
2672 | (point (point)) | |
2673 | overlay) | |
f70419a8 | 2674 | (forward-line 1) |
05dad1e6 AS |
2675 | (setq overlay (make-overlay point (point))) |
2676 | (overlay-put overlay 'face face) | |
0e362f54 GM |
2677 | (overlay-put overlay 'vc-annotation t)) |
2678 | (setq difference (vc-call-backend vc-annotate-backend 'annotate-difference (point)))))) | |
f70419a8 | 2679 | |
7d2d9482 | 2680 | \f |
c6d4f628 | 2681 | ;; Collect back-end-dependent stuff here |
594722a8 | 2682 | |
0e362f54 | 2683 | (defalias 'vc-default-logentry-check 'ignore) |
594722a8 | 2684 | |
594722a8 ER |
2685 | (defun vc-check-headers () |
2686 | "Check if the current file has any headers in it." | |
2687 | (interactive) | |
0e362f54 | 2688 | (vc-call-backend (vc-backend buffer-file-name) 'check-headers)) |
594722a8 ER |
2689 | |
2690 | ;; Back-end-dependent stuff ends here. | |
2691 | ||
2692 | ;; Set up key bindings for use while editing log messages | |
2693 | ||
099bd78a | 2694 | (define-derived-mode vc-log-mode text-mode "VC-Log" |
0e362f54 | 2695 | "Major mode for editing VC log entries. |
594722a8 ER |
2696 | These bindings are added to the global keymap when you enter this mode: |
2697 | \\[vc-next-action] perform next logical version-control operation on current file | |
0e362f54 | 2698 | \\[vc-register] register current file |
594722a8 ER |
2699 | \\[vc-toggle-read-only] like next-action, but won't register files |
2700 | \\[vc-insert-headers] insert version-control headers in current file | |
2701 | \\[vc-print-log] display change history of current file | |
2702 | \\[vc-revert-buffer] revert buffer to latest version | |
2703 | \\[vc-cancel-version] undo latest checkin | |
2704 | \\[vc-diff] show diffs between file versions | |
f1818994 | 2705 | \\[vc-version-other-window] visit old version in another window |
594722a8 | 2706 | \\[vc-directory] show all files locked by any user in or below . |
0e362f54 | 2707 | \\[vc-annotate] colorful display of the cvs annotate command |
594722a8 ER |
2708 | \\[vc-update-change-log] add change log entry from recent checkins |
2709 | ||
2710 | While you are entering a change log message for a version, the following | |
2711 | additional bindings will be in effect. | |
2712 | ||
2713 | \\[vc-finish-logentry] proceed with check in, ending log message entry | |
2714 | ||
2715 | Whenever you do a checkin, your log comment is added to a ring of | |
2716 | saved comments. These can be recalled as follows: | |
2717 | ||
2718 | \\[vc-next-comment] replace region with next message in comment ring | |
2719 | \\[vc-previous-comment] replace region with previous message in comment ring | |
8c0aaf40 ER |
2720 | \\[vc-comment-search-reverse] search backward for regexp in the comment ring |
2721 | \\[vc-comment-search-forward] search backward for regexp in the comment ring | |
594722a8 | 2722 | |
0e362f54 GM |
2723 | Entry to the change-log submode calls the value of `text-mode-hook', then |
2724 | the value of `vc-log-mode-hook'. | |
594722a8 ER |
2725 | |
2726 | Global user options: | |
0e362f54 | 2727 | `vc-initial-comment' If non-nil, require user to enter a change |
594722a8 ER |
2728 | comment upon first checkin of the file. |
2729 | ||
0e362f54 | 2730 | `vc-keep-workfiles' Non-nil value prevents workfiles from being |
594722a8 ER |
2731 | deleted when changes are checked in |
2732 | ||
0e362f54 | 2733 | `vc-suppress-confirm' Suppresses some confirmation prompts, |
594722a8 ER |
2734 | notably for reversions. |
2735 | ||
0e362f54 | 2736 | vc-BACKEND-header Which keywords to insert when adding headers |
594722a8 | 2737 | with \\[vc-insert-headers]. Defaults to |
0e362f54 | 2738 | '(\"\%\W\%\") under SCCS, '(\"\$Id\$\") under |
80688f5c | 2739 | RCS and CVS. |
594722a8 | 2740 | |
0e362f54 | 2741 | `vc-static-header-alist' By default, version headers inserted in C files |
594722a8 | 2742 | get stuffed in a static string area so that |
80688f5c RS |
2743 | ident(RCS/CVS) or what(SCCS) can see them in |
2744 | the compiled object code. You can override | |
2745 | this by setting this variable to nil, or change | |
594722a8 ER |
2746 | the header template by changing it. |
2747 | ||
0e362f54 | 2748 | `vc-command-messages' if non-nil, display run messages from the |
594722a8 ER |
2749 | actual version-control utilities (this is |
2750 | intended primarily for people hacking vc | |
099bd78a SM |
2751 | itself)." |
2752 | (make-local-variable 'vc-comment-ring-index)) | |
0e362f54 GM |
2753 | |
2754 | (defun vc-log-edit (file) | |
099bd78a SM |
2755 | "Set up `log-edit' for use with VC on FILE. |
2756 | If `log-edit' is not available, resort to `vc-log-mode'." | |
2757 | (setq default-directory | |
2758 | (if file (file-name-directory file) | |
2759 | (with-current-buffer vc-parent-buffer default-directory))) | |
2760 | (if (fboundp 'log-edit) | |
2761 | (log-edit 'vc-finish-logentry nil | |
2762 | (if file `(lambda () ',(list (file-name-nondirectory file))) | |
2763 | ;; If FILE is nil, we were called from vc-dired. | |
2764 | (lambda () | |
2765 | (with-current-buffer vc-parent-buffer | |
2766 | (dired-get-marked-files t))))) | |
2767 | (vc-log-mode)) | |
0e362f54 GM |
2768 | (set (make-local-variable 'vc-log-file) file) |
2769 | (make-local-variable 'vc-log-version) | |
099bd78a | 2770 | (set-buffer-modified-p nil) |
0e362f54 | 2771 | (setq buffer-file-name nil)) |
594722a8 ER |
2772 | |
2773 | ;;; These things should probably be generally available | |
2774 | ||
2f119435 AS |
2775 | (defun vc-file-tree-walk (dirname func &rest args) |
2776 | "Walk recursively through DIRNAME. | |
0e362f54 | 2777 | Invoke FUNC f ARGS on each VC-managed file f underneath it." |
2f119435 AS |
2778 | (vc-file-tree-walk-internal (expand-file-name dirname) func args) |
2779 | (message "Traversing directory %s...done" dirname)) | |
02da6253 PE |
2780 | |
2781 | (defun vc-file-tree-walk-internal (file func args) | |
2782 | (if (not (file-directory-p file)) | |
0e362f54 | 2783 | (if (vc-backend file) (apply func file args)) |
993a1a44 | 2784 | (message "Traversing directory %s..." (abbreviate-file-name file)) |
02da6253 PE |
2785 | (let ((dir (file-name-as-directory file))) |
2786 | (mapcar | |
0e362f54 GM |
2787 | (lambda (f) (or |
2788 | (string-equal f ".") | |
2789 | (string-equal f "..") | |
2790 | (member f vc-directory-exclusion-list) | |
2791 | (let ((dirf (expand-file-name f dir))) | |
2792 | (or | |
2793 | (file-symlink-p dirf);; Avoid possible loops | |
2794 | (vc-file-tree-walk-internal dirf func args))))) | |
02da6253 | 2795 | (directory-files dir))))) |
594722a8 ER |
2796 | |
2797 | (provide 'vc) | |
2798 | ||
2799 | ;;; DEVELOPER'S NOTES ON CONCURRENCY PROBLEMS IN THIS CODE | |
2800 | ;;; | |
2801 | ;;; These may be useful to anyone who has to debug or extend the package. | |
c6d4f628 RS |
2802 | ;;; (Note that this information corresponds to versions 5.x. Some of it |
2803 | ;;; might have been invalidated by the additions to support branching | |
2804 | ;;; and RCS keyword lookup. AS, 1995/03/24) | |
0e362f54 | 2805 | ;;; |
594722a8 ER |
2806 | ;;; A fundamental problem in VC is that there are time windows between |
2807 | ;;; vc-next-action's computations of the file's version-control state and | |
2808 | ;;; the actions that change it. This is a window open to lossage in a | |
2809 | ;;; multi-user environment; someone else could nip in and change the state | |
2810 | ;;; of the master during it. | |
0e362f54 | 2811 | ;;; |
594722a8 ER |
2812 | ;;; The performance problem is that rlog/prs calls are very expensive; we want |
2813 | ;;; to avoid them as much as possible. | |
0e362f54 | 2814 | ;;; |
594722a8 | 2815 | ;;; ANALYSIS: |
0e362f54 | 2816 | ;;; |
594722a8 | 2817 | ;;; The performance problem, it turns out, simplifies in practice to the |
0e362f54 | 2818 | ;;; problem of making vc-state fast. The two other functions that call |
594722a8 ER |
2819 | ;;; prs/rlog will not be so commonly used that the slowdown is a problem; one |
2820 | ;;; makes snapshots, the other deletes the calling user's last change in the | |
2821 | ;;; master. | |
0e362f54 | 2822 | ;;; |
594722a8 ER |
2823 | ;;; The race condition implies that we have to either (a) lock the master |
2824 | ;;; during the entire execution of vc-next-action, or (b) detect and | |
2825 | ;;; recover from errors resulting from dispatch on an out-of-date state. | |
0e362f54 | 2826 | ;;; |
a7acbbe4 | 2827 | ;;; Alternative (a) appears to be infeasible. The problem is that we can't |
594722a8 ER |
2828 | ;;; guarantee that the lock will ever be removed. Suppose a user starts a |
2829 | ;;; checkin, the change message buffer pops up, and the user, having wandered | |
2830 | ;;; off to do something else, simply forgets about it? | |
0e362f54 | 2831 | ;;; |
594722a8 | 2832 | ;;; Alternative (b), on the other hand, works well with a cheap way to speed up |
0e362f54 | 2833 | ;;; vc-state. Usually, if a file is registered, we can read its locked/ |
594722a8 | 2834 | ;;; unlocked state and its current owner from its permissions. |
0e362f54 | 2835 | ;;; |
594722a8 ER |
2836 | ;;; This shortcut will fail if someone has manually changed the workfile's |
2837 | ;;; permissions; also if developers are munging the workfile in several | |
2838 | ;;; directories, with symlinks to a master (in this latter case, the | |
2839 | ;;; permissions shortcut will fail to detect a lock asserted from another | |
2840 | ;;; directory). | |
0e362f54 | 2841 | ;;; |
594722a8 ER |
2842 | ;;; Note that these cases correspond exactly to the errors which could happen |
2843 | ;;; because of a competing checkin/checkout race in between two instances of | |
2844 | ;;; vc-next-action. | |
0e362f54 | 2845 | ;;; |
594722a8 | 2846 | ;;; For VC's purposes, a workfile/master pair may have the following states: |
0e362f54 | 2847 | ;;; |
594722a8 | 2848 | ;;; A. Unregistered. There is a workfile, there is no master. |
0e362f54 | 2849 | ;;; |
594722a8 | 2850 | ;;; B. Registered and not locked by anyone. |
0e362f54 | 2851 | ;;; |
594722a8 | 2852 | ;;; C. Locked by calling user and unchanged. |
0e362f54 | 2853 | ;;; |
594722a8 | 2854 | ;;; D. Locked by the calling user and changed. |
0e362f54 | 2855 | ;;; |
594722a8 | 2856 | ;;; E. Locked by someone other than the calling user. |
0e362f54 | 2857 | ;;; |
594722a8 | 2858 | ;;; This makes for 25 states and 20 error conditions. Here's the matrix: |
0e362f54 | 2859 | ;;; |
594722a8 ER |
2860 | ;;; VC's idea of state |
2861 | ;;; | | |
2862 | ;;; V Actual state RCS action SCCS action Effect | |
2863 | ;;; A B C D E | |
2864 | ;;; A . 1 2 3 4 ci -u -t- admin -fb -i<file> initial admin | |
2865 | ;;; B 5 . 6 7 8 co -l get -e checkout | |
2866 | ;;; C 9 10 . 11 12 co -u unget; get revert | |
2867 | ;;; D 13 14 15 . 16 ci -u -m<comment> delta -y<comment>; get checkin | |
b0c9bc8c | 2868 | ;;; E 17 18 19 20 . rcs -u -M -l unget -n ; get -g steal lock |
0e362f54 | 2869 | ;;; |
594722a8 | 2870 | ;;; All commands take the master file name as a last argument (not shown). |
0e362f54 | 2871 | ;;; |
594722a8 ER |
2872 | ;;; In the discussion below, a "self-race" is a pathological situation in |
2873 | ;;; which VC operations are being attempted simultaneously by two or more | |
2874 | ;;; Emacsen running under the same username. | |
0e362f54 | 2875 | ;;; |
594722a8 | 2876 | ;;; The vc-next-action code has the following windows: |
0e362f54 | 2877 | ;;; |
594722a8 ER |
2878 | ;;; Window P: |
2879 | ;;; Between the check for existence of a master file and the call to | |
2880 | ;;; admin/checkin in vc-buffer-admin (apparent state A). This window may | |
2881 | ;;; never close if the initial-comment feature is on. | |
0e362f54 | 2882 | ;;; |
594722a8 ER |
2883 | ;;; Window Q: |
2884 | ;;; Between the call to vc-workfile-unchanged-p in and the immediately | |
2885 | ;;; following revert (apparent state C). | |
0e362f54 | 2886 | ;;; |
594722a8 ER |
2887 | ;;; Window R: |
2888 | ;;; Between the call to vc-workfile-unchanged-p in and the following | |
2889 | ;;; checkin (apparent state D). This window may never close. | |
0e362f54 | 2890 | ;;; |
594722a8 ER |
2891 | ;;; Window S: |
2892 | ;;; Between the unlock and the immediately following checkout during a | |
2893 | ;;; revert operation (apparent state C). Included in window Q. | |
0e362f54 | 2894 | ;;; |
594722a8 | 2895 | ;;; Window T: |
0e362f54 GM |
2896 | ;;; Between vc-state and the following checkout (apparent state B). |
2897 | ;;; | |
594722a8 | 2898 | ;;; Window U: |
0e362f54 | 2899 | ;;; Between vc-state and the following revert (apparent state C). |
594722a8 | 2900 | ;;; Includes windows Q and S. |
0e362f54 | 2901 | ;;; |
594722a8 | 2902 | ;;; Window V: |
0e362f54 | 2903 | ;;; Between vc-state and the following checkin (apparent state |
594722a8 ER |
2904 | ;;; D). This window may never be closed if the user fails to complete the |
2905 | ;;; checkin message. Includes window R. | |
0e362f54 | 2906 | ;;; |
594722a8 | 2907 | ;;; Window W: |
0e362f54 | 2908 | ;;; Between vc-state and the following steal-lock (apparent |
34291cd2 | 2909 | ;;; state E). This window may never close if the user fails to complete |
594722a8 | 2910 | ;;; the steal-lock message. Includes window X. |
0e362f54 | 2911 | ;;; |
594722a8 ER |
2912 | ;;; Window X: |
2913 | ;;; Between the unlock and the immediately following re-lock during a | |
0e362f54 | 2914 | ;;; steal-lock operation (apparent state E). This window may never close |
594722a8 | 2915 | ;;; if the user fails to complete the steal-lock message. |
0e362f54 | 2916 | ;;; |
594722a8 | 2917 | ;;; Errors: |
0e362f54 | 2918 | ;;; |
594722a8 ER |
2919 | ;;; Apparent state A --- |
2920 | ;;; | |
2921 | ;;; 1. File looked unregistered but is actually registered and not locked. | |
0e362f54 | 2922 | ;;; |
594722a8 ER |
2923 | ;;; Potential cause: someone else's admin during window P, with |
2924 | ;;; caller's admin happening before their checkout. | |
0e362f54 | 2925 | ;;; |
b0c9bc8c AS |
2926 | ;;; RCS: Prior to version 5.6.4, ci fails with message |
2927 | ;;; "no lock set by <user>". From 5.6.4 onwards, VC uses the new | |
2928 | ;;; ci -i option and the message is "<file>,v: already exists". | |
594722a8 | 2929 | ;;; SCCS: admin will fail with error (ad19). |
0e362f54 | 2930 | ;;; |
594722a8 | 2931 | ;;; We can let these errors be passed up to the user. |
0e362f54 | 2932 | ;;; |
594722a8 | 2933 | ;;; 2. File looked unregistered but is actually locked by caller, unchanged. |
0e362f54 | 2934 | ;;; |
594722a8 | 2935 | ;;; Potential cause: self-race during window P. |
0e362f54 | 2936 | ;;; |
b0c9bc8c AS |
2937 | ;;; RCS: Prior to version 5.6.4, reverts the file to the last saved |
2938 | ;;; version and unlocks it. From 5.6.4 onwards, VC uses the new | |
2939 | ;;; ci -i option, failing with message "<file>,v: already exists". | |
594722a8 | 2940 | ;;; SCCS: will fail with error (ad19). |
0e362f54 | 2941 | ;;; |
594722a8 | 2942 | ;;; Either of these consequences is acceptable. |
0e362f54 | 2943 | ;;; |
594722a8 | 2944 | ;;; 3. File looked unregistered but is actually locked by caller, changed. |
0e362f54 | 2945 | ;;; |
594722a8 | 2946 | ;;; Potential cause: self-race during window P. |
0e362f54 GM |
2947 | ;;; |
2948 | ;;; RCS: Prior to version 5.6.4, VC registers the caller's workfile as | |
2949 | ;;; a delta with a null change comment (the -t- switch will be | |
b0c9bc8c AS |
2950 | ;;; ignored). From 5.6.4 onwards, VC uses the new ci -i option, |
2951 | ;;; failing with message "<file>,v: already exists". | |
594722a8 | 2952 | ;;; SCCS: will fail with error (ad19). |
0e362f54 | 2953 | ;;; |
594722a8 | 2954 | ;;; 4. File looked unregistered but is locked by someone else. |
0e362f54 | 2955 | ;;; |
594722a8 ER |
2956 | ;;; Potential cause: someone else's admin during window P, with |
2957 | ;;; caller's admin happening *after* their checkout. | |
0e362f54 GM |
2958 | ;;; |
2959 | ;;; RCS: Prior to version 5.6.4, ci fails with a | |
2960 | ;;; "no lock set by <user>" message. From 5.6.4 onwards, | |
2961 | ;;; VC uses the new ci -i option, failing with message | |
b0c9bc8c | 2962 | ;;; "<file>,v: already exists". |
594722a8 | 2963 | ;;; SCCS: will fail with error (ad19). |
0e362f54 | 2964 | ;;; |
594722a8 | 2965 | ;;; We can let these errors be passed up to the user. |
0e362f54 | 2966 | ;;; |
594722a8 ER |
2967 | ;;; Apparent state B --- |
2968 | ;;; | |
2969 | ;;; 5. File looked registered and not locked, but is actually unregistered. | |
0e362f54 | 2970 | ;;; |
594722a8 | 2971 | ;;; Potential cause: master file got nuked during window P. |
0e362f54 | 2972 | ;;; |
594722a8 ER |
2973 | ;;; RCS: will fail with "RCS/<file>: No such file or directory" |
2974 | ;;; SCCS: will fail with error ut4. | |
0e362f54 | 2975 | ;;; |
594722a8 | 2976 | ;;; We can let these errors be passed up to the user. |
0e362f54 | 2977 | ;;; |
594722a8 ER |
2978 | ;;; 6. File looked registered and not locked, but is actually locked by the |
2979 | ;;; calling user and unchanged. | |
0e362f54 | 2980 | ;;; |
594722a8 | 2981 | ;;; Potential cause: self-race during window T. |
0e362f54 | 2982 | ;;; |
594722a8 ER |
2983 | ;;; RCS: in the same directory as the previous workfile, co -l will fail |
2984 | ;;; with "co error: writable foo exists; checkout aborted". In any other | |
2985 | ;;; directory, checkout will succeed. | |
2986 | ;;; SCCS: will fail with ge17. | |
0e362f54 | 2987 | ;;; |
594722a8 | 2988 | ;;; Either of these consequences is acceptable. |
0e362f54 | 2989 | ;;; |
594722a8 ER |
2990 | ;;; 7. File looked registered and not locked, but is actually locked by the |
2991 | ;;; calling user and changed. | |
0e362f54 | 2992 | ;;; |
594722a8 | 2993 | ;;; As case 6. |
0e362f54 | 2994 | ;;; |
594722a8 ER |
2995 | ;;; 8. File looked registered and not locked, but is actually locked by another |
2996 | ;;; user. | |
0e362f54 | 2997 | ;;; |
594722a8 | 2998 | ;;; Potential cause: someone else checks it out during window T. |
0e362f54 | 2999 | ;;; |
594722a8 ER |
3000 | ;;; RCS: co error: revision 1.3 already locked by <user> |
3001 | ;;; SCCS: fails with ge4 (in directory) or ut7 (outside it). | |
0e362f54 | 3002 | ;;; |
594722a8 | 3003 | ;;; We can let these errors be passed up to the user. |
0e362f54 | 3004 | ;;; |
594722a8 ER |
3005 | ;;; Apparent state C --- |
3006 | ;;; | |
3007 | ;;; 9. File looks locked by calling user and unchanged, but is unregistered. | |
0e362f54 | 3008 | ;;; |
594722a8 | 3009 | ;;; As case 5. |
0e362f54 | 3010 | ;;; |
594722a8 ER |
3011 | ;;; 10. File looks locked by calling user and unchanged, but is actually not |
3012 | ;;; locked. | |
0e362f54 | 3013 | ;;; |
594722a8 ER |
3014 | ;;; Potential cause: a self-race in window U, or by the revert's |
3015 | ;;; landing during window X of some other user's steal-lock or window S | |
3016 | ;;; of another user's revert. | |
0e362f54 | 3017 | ;;; |
594722a8 ER |
3018 | ;;; RCS: succeeds, refreshing the file from the identical version in |
3019 | ;;; the master. | |
3020 | ;;; SCCS: fails with error ut4 (p file nonexistent). | |
3021 | ;;; | |
3022 | ;;; Either of these consequences is acceptable. | |
0e362f54 | 3023 | ;;; |
594722a8 ER |
3024 | ;;; 11. File is locked by calling user. It looks unchanged, but is actually |
3025 | ;;; changed. | |
0e362f54 | 3026 | ;;; |
594722a8 ER |
3027 | ;;; Potential cause: the file would have to be touched by a self-race |
3028 | ;;; during window Q. | |
0e362f54 | 3029 | ;;; |
594722a8 ER |
3030 | ;;; The revert will succeed, removing whatever changes came with |
3031 | ;;; the touch. It is theoretically possible that work could be lost. | |
0e362f54 | 3032 | ;;; |
594722a8 ER |
3033 | ;;; 12. File looks like it's locked by the calling user and unchanged, but |
3034 | ;;; it's actually locked by someone else. | |
0e362f54 | 3035 | ;;; |
594722a8 | 3036 | ;;; Potential cause: a steal-lock in window V. |
0e362f54 | 3037 | ;;; |
594722a8 ER |
3038 | ;;; RCS: co error: revision <rev> locked by <user>; use co -r or rcs -u |
3039 | ;;; SCCS: fails with error un2 | |
0e362f54 | 3040 | ;;; |
594722a8 | 3041 | ;;; We can pass these errors up to the user. |
0e362f54 | 3042 | ;;; |
594722a8 ER |
3043 | ;;; Apparent state D --- |
3044 | ;;; | |
3045 | ;;; 13. File looks like it's locked by the calling user and changed, but it's | |
3046 | ;;; actually unregistered. | |
0e362f54 | 3047 | ;;; |
594722a8 | 3048 | ;;; Potential cause: master file got nuked during window P. |
0e362f54 GM |
3049 | ;;; |
3050 | ;;; RCS: Prior to version 5.6.4, checks in the user's version as an | |
b0c9bc8c AS |
3051 | ;;; initial delta. From 5.6.4 onwards, VC uses the new ci -j |
3052 | ;;; option, failing with message "no such file or directory". | |
594722a8 ER |
3053 | ;;; SCCS: will fail with error ut4. |
3054 | ;;; | |
b0c9bc8c AS |
3055 | ;;; This case is kind of nasty. Under RCS prior to version 5.6.4, |
3056 | ;;; VC may fail to detect the loss of previous version information. | |
0e362f54 | 3057 | ;;; |
594722a8 ER |
3058 | ;;; 14. File looks like it's locked by the calling user and changed, but it's |
3059 | ;;; actually unlocked. | |
0e362f54 | 3060 | ;;; |
594722a8 ER |
3061 | ;;; Potential cause: self-race in window V, or the checkin happening |
3062 | ;;; during the window X of someone else's steal-lock or window S of | |
3063 | ;;; someone else's revert. | |
0e362f54 | 3064 | ;;; |
594722a8 ER |
3065 | ;;; RCS: ci will fail with "no lock set by <user>". |
3066 | ;;; SCCS: delta will fail with error ut4. | |
0e362f54 | 3067 | ;;; |
594722a8 ER |
3068 | ;;; 15. File looks like it's locked by the calling user and changed, but it's |
3069 | ;;; actually locked by the calling user and unchanged. | |
0e362f54 | 3070 | ;;; |
594722a8 ER |
3071 | ;;; Potential cause: another self-race --- a whole checkin/checkout |
3072 | ;;; sequence by the calling user would have to land in window R. | |
0e362f54 | 3073 | ;;; |
594722a8 ER |
3074 | ;;; SCCS: checks in a redundant delta and leaves the file unlocked as usual. |
3075 | ;;; RCS: reverts to the file state as of the second user's checkin, leaving | |
3076 | ;;; the file unlocked. | |
3077 | ;;; | |
3078 | ;;; It is theoretically possible that work could be lost under RCS. | |
0e362f54 | 3079 | ;;; |
594722a8 ER |
3080 | ;;; 16. File looks like it's locked by the calling user and changed, but it's |
3081 | ;;; actually locked by a different user. | |
0e362f54 | 3082 | ;;; |
594722a8 ER |
3083 | ;;; RCS: ci error: no lock set by <user> |
3084 | ;;; SCCS: unget will fail with error un2 | |
0e362f54 | 3085 | ;;; |
594722a8 | 3086 | ;;; We can pass these errors up to the user. |
0e362f54 | 3087 | ;;; |
594722a8 ER |
3088 | ;;; Apparent state E --- |
3089 | ;;; | |
3090 | ;;; 17. File looks like it's locked by some other user, but it's actually | |
3091 | ;;; unregistered. | |
0e362f54 | 3092 | ;;; |
594722a8 | 3093 | ;;; As case 13. |
0e362f54 | 3094 | ;;; |
594722a8 ER |
3095 | ;;; 18. File looks like it's locked by some other user, but it's actually |
3096 | ;;; unlocked. | |
0e362f54 | 3097 | ;;; |
594722a8 | 3098 | ;;; Potential cause: someone released a lock during window W. |
0e362f54 | 3099 | ;;; |
594722a8 ER |
3100 | ;;; RCS: The calling user will get the lock on the file. |
3101 | ;;; SCCS: unget -n will fail with cm4. | |
0e362f54 | 3102 | ;;; |
594722a8 | 3103 | ;;; Either of these consequences will be OK. |
0e362f54 | 3104 | ;;; |
594722a8 ER |
3105 | ;;; 19. File looks like it's locked by some other user, but it's actually |
3106 | ;;; locked by the calling user and unchanged. | |
0e362f54 | 3107 | ;;; |
594722a8 ER |
3108 | ;;; Potential cause: the other user relinquishing a lock followed by |
3109 | ;;; a self-race, both in window W. | |
0e362f54 | 3110 | ;;; |
594722a8 ER |
3111 | ;;; Under both RCS and SCCS, both unlock and lock will succeed, making |
3112 | ;;; the sequence a no-op. | |
0e362f54 | 3113 | ;;; |
594722a8 ER |
3114 | ;;; 20. File looks like it's locked by some other user, but it's actually |
3115 | ;;; locked by the calling user and changed. | |
0e362f54 | 3116 | ;;; |
594722a8 | 3117 | ;;; As case 19. |
0e362f54 | 3118 | ;;; |
594722a8 | 3119 | ;;; PROBLEM CASES: |
0e362f54 | 3120 | ;;; |
594722a8 | 3121 | ;;; In order of decreasing severity: |
0e362f54 | 3122 | ;;; |
b0c9bc8c | 3123 | ;;; Cases 11 and 15 are the only ones that potentially lose work. |
594722a8 | 3124 | ;;; They would require a self-race for this to happen. |
0e362f54 | 3125 | ;;; |
594722a8 ER |
3126 | ;;; Case 13 in RCS loses information about previous deltas, retaining |
3127 | ;;; only the information in the current workfile. This can only happen | |
3128 | ;;; if the master file gets nuked in window P. | |
0e362f54 | 3129 | ;;; |
594722a8 ER |
3130 | ;;; Case 3 in RCS and case 15 under SCCS insert a redundant delta with |
3131 | ;;; no change comment in the master. This would require a self-race in | |
3132 | ;;; window P or R respectively. | |
0e362f54 | 3133 | ;;; |
594722a8 | 3134 | ;;; Cases 2, 10, 19 and 20 do extra work, but make no changes. |
0e362f54 | 3135 | ;;; |
594722a8 ER |
3136 | ;;; Unfortunately, it appears to me that no recovery is possible in these |
3137 | ;;; cases. They don't yield error messages, so there's no way to tell that | |
3138 | ;;; a race condition has occurred. | |
0e362f54 | 3139 | ;;; |
594722a8 ER |
3140 | ;;; All other cases don't change either the workfile or the master, and |
3141 | ;;; trigger command errors which the user will see. | |
0e362f54 | 3142 | ;;; |
594722a8 ER |
3143 | ;;; Thus, there is no explicit recovery code. |
3144 | ||
3145 | ;;; vc.el ends here |