Commit | Line | Data |
---|---|---|
66321b2f | 1 | ;;; vc.el --- drive a version-control system from within Emacs |
594722a8 | 2 | |
891b8b69 | 3 | ;; Copyright (C) 1992,93,94,95,96,97,98,2000,2001 Free Software Foundation, Inc. |
594722a8 | 4 | |
0e362f54 GM |
5 | ;; Author: FSF (see below for full credits) |
6 | ;; Maintainer: Andre Spiegel <spiegel@gnu.org> | |
284b3043 | 7 | ;; Keywords: tools |
594722a8 | 8 | |
75665141 | 9 | ;; $Id: vc.el,v 1.313 2001/10/21 23:31:45 spiegel Exp $ |
045e1aa5 | 10 | |
594722a8 ER |
11 | ;; This file is part of GNU Emacs. |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
16 | ;; any later version. | |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
b578f267 EN |
24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
25 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | ;; Boston, MA 02111-1307, USA. | |
594722a8 | 27 | |
0e362f54 GM |
28 | ;;; Credits: |
29 | ||
30 | ;; VC was initially designed and implemented by Eric S. Raymond | |
31 | ;; <esr@snark.thyrsus.com>. Over the years, many people have | |
32 | ;; contributed substantial amounts of work to VC. These include: | |
33 | ;; Per Cederqvist <ceder@lysator.liu.se> | |
34 | ;; Paul Eggert <eggert@twinsun.com> | |
35 | ;; Sebastian Kremer <sk@thp.uni-koeln.de> | |
36 | ;; Martin Lorentzson <martinl@gnu.org> | |
166a0ef7 | 37 | ;; Dave Love <fx@gnu.org> |
0e362f54 GM |
38 | ;; Stefan Monnier <monnier@cs.yale.edu> |
39 | ;; Andre Spiegel <spiegel@gnu.org> | |
40 | ;; Richard Stallman <rms@gnu.org> | |
41 | ;; ttn@netcom.com | |
42 | ||
594722a8 ER |
43 | ;;; Commentary: |
44 | ||
1a2f456b ER |
45 | ;; This mode is fully documented in the Emacs user's manual. |
46 | ;; | |
632e9525 | 47 | ;; Supported version-control systems presently include SCCS, RCS, and CVS. |
b0c9bc8c AS |
48 | ;; |
49 | ;; Some features will not work with old RCS versions. Where | |
50 | ;; appropriate, VC finds out which version you have, and allows or | |
0e362f54 | 51 | ;; disallows those features (stealing locks, for example, works only |
b0c9bc8c | 52 | ;; from 5.6.2 onwards). |
632e9525 RS |
53 | ;; Even initial checkins will fail if your RCS version is so old that ci |
54 | ;; doesn't understand -t-; this has been known to happen to people running | |
0e362f54 | 55 | ;; NExTSTEP 3.0. |
594722a8 | 56 | ;; |
0e362f54 | 57 | ;; You can support the RCS -x option by customizing vc-rcs-master-templates. |
594722a8 ER |
58 | ;; |
59 | ;; Proper function of the SCCS diff commands requires the shellscript vcdiff | |
60 | ;; to be installed somewhere on Emacs's path for executables. | |
61 | ;; | |
1a2f456b | 62 | ;; If your site uses the ChangeLog convention supported by Emacs, the |
594be62e | 63 | ;; function vc-comment-to-change-log should prove a useful checkin hook. |
1a2f456b | 64 | ;; |
594722a8 ER |
65 | ;; The vc code maintains some internal state in order to reduce expensive |
66 | ;; version-control operations to a minimum. Some names are only computed | |
34291cd2 | 67 | ;; once. If you perform version control operations with RCS/SCCS/CVS while |
594722a8 ER |
68 | ;; vc's back is turned, or move/rename master files while vc is running, |
69 | ;; vc may get seriously confused. Don't do these things! | |
70 | ;; | |
71 | ;; Developer's notes on some concurrency issues are included at the end of | |
72 | ;; the file. | |
0e362f54 | 73 | ;; |
fcb500ea AS |
74 | ;; ADDING SUPPORT FOR OTHER BACKENDS |
75 | ;; | |
76 | ;; VC can use arbitrary version control systems as a backend. To add | |
77 | ;; support for a new backend named SYS, write a library vc-sys.el that | |
78 | ;; contains functions of the form `vc-sys-...' (note that SYS is in lower | |
79 | ;; case for the function and library names). VC will use that library if | |
80 | ;; you put the symbol SYS somewhere into the list of | |
81 | ;; `vc-handled-backends'. Then, for example, if `vc-sys-registered' | |
82 | ;; returns non-nil for a file, all SYS-specific versions of VC commands | |
83 | ;; will be available for that file. | |
84 | ;; | |
85 | ;; VC keeps some per-file information in the form of properties (see | |
86 | ;; vc-file-set/getprop in vc-hooks.el). The backend-specific functions | |
87 | ;; do not generally need to be aware of these properties. For example, | |
88 | ;; `vc-sys-workfile-version' should compute the workfile version and | |
89 | ;; return it; it should not look it up in the property, and it needn't | |
90 | ;; store it there either. However, if a backend-specific function does | |
91 | ;; store a value in a property, that value takes precedence over any | |
92 | ;; value that the generic code might want to set (check for uses of | |
93 | ;; the macro `with-vc-properties' in vc.el). | |
94 | ;; | |
95 | ;; In the list of functions below, each identifier needs to be prepended | |
96 | ;; with `vc-sys-'. Some of the functions are mandatory (marked with a | |
97 | ;; `*'), others are optional (`-'). | |
98 | ;; | |
99 | ;; STATE-QUERYING FUNCTIONS | |
100 | ;; | |
0e362f54 | 101 | ;; * registered (file) |
fcb500ea AS |
102 | ;; |
103 | ;; Return non-nil if FILE is registered in this backend. | |
104 | ;; | |
105 | ;; * state (file) | |
106 | ;; | |
107 | ;; Return the current version control state of FILE. For a list of | |
108 | ;; possible values, see `vc-state'. This function should do a full and | |
109 | ;; reliable state computation; it is usually called immediately after | |
110 | ;; C-x v v. If you want to use a faster heuristic when visiting a | |
111 | ;; file, put that into `state-heuristic' below. | |
112 | ;; | |
0e362f54 | 113 | ;; - state-heuristic (file) |
fcb500ea AS |
114 | ;; |
115 | ;; If provided, this function is used to estimate the version control | |
116 | ;; state of FILE at visiting time. It should be considerably faster | |
117 | ;; than the implementation of `state'. For a list of possible values, | |
118 | ;; see the doc string of `vc-state'. | |
119 | ;; | |
0e362f54 | 120 | ;; - dir-state (dir) |
fcb500ea AS |
121 | ;; |
122 | ;; If provided, this function is used to find the version control state | |
123 | ;; of all files in DIR in a fast way. The function should not return | |
124 | ;; anything, but rather store the files' states into the corresponding | |
125 | ;; `vc-state' properties. | |
126 | ;; | |
aae91380 | 127 | ;; * workfile-version (file) |
fcb500ea AS |
128 | ;; |
129 | ;; Return the current workfile version of FILE. | |
130 | ;; | |
131 | ;; - latest-on-branch-p (file) | |
132 | ;; | |
133 | ;; Return non-nil if the current workfile version of FILE is the latest | |
134 | ;; on its branch. The default implementation always returns t, which | |
135 | ;; means that working with non-current versions is not supported by | |
136 | ;; default. | |
137 | ;; | |
0e362f54 | 138 | ;; * checkout-model (file) |
fcb500ea AS |
139 | ;; |
140 | ;; Indicate whether FILE needs to be "checked out" before it can be | |
141 | ;; edited. See `vc-checkout-model' for a list of possible values. | |
142 | ;; | |
aae91380 | 143 | ;; - workfile-unchanged-p (file) |
fcb500ea AS |
144 | ;; |
145 | ;; Return non-nil if FILE is unchanged from its current workfile | |
146 | ;; version. This function should do a brief comparison of FILE's | |
147 | ;; contents with those of the master version. If the backend does not | |
148 | ;; have such a brief-comparison feature, the default implementation of | |
149 | ;; this function can be used, which delegates to a full | |
150 | ;; vc-BACKEND-diff. | |
151 | ;; | |
0e362f54 | 152 | ;; - mode-line-string (file) |
fcb500ea AS |
153 | ;; |
154 | ;; If provided, this function should return the VC-specific mode line | |
155 | ;; string for FILE. The default implementation deals well with all | |
156 | ;; states that `vc-state' can return. | |
157 | ;; | |
aae91380 | 158 | ;; - dired-state-info (file) |
fcb500ea AS |
159 | ;; |
160 | ;; Translate the `vc-state' property of FILE into a string that can be | |
161 | ;; used in a vc-dired buffer. The default implementation deals well | |
162 | ;; with all states that `vc-state' can return. | |
163 | ;; | |
164 | ;; STATE-CHANGING FUNCTIONS | |
165 | ;; | |
166 | ;; * register (file &optional rev comment) | |
167 | ;; | |
168 | ;; Register FILE in this backend. Optionally, an initial revision REV | |
169 | ;; and an initial description of the file, COMMENT, may be specified. | |
170 | ;; | |
099bd78a | 171 | ;; - responsible-p (file) |
fcb500ea AS |
172 | ;; |
173 | ;; Return non-nil if this backend considers itself "responsible" for | |
174 | ;; FILE, which can also be a directory. This function is used to find | |
175 | ;; out what backend to use for registration of new files and for things | |
176 | ;; like change log generation. The default implementation always | |
177 | ;; returns nil. | |
178 | ;; | |
0e362f54 | 179 | ;; - could-register (file) |
fcb500ea AS |
180 | ;; |
181 | ;; Return non-nil if FILE could be registered under this backend. The | |
182 | ;; default implementation always returns t. | |
183 | ;; | |
aae91380 | 184 | ;; - receive-file (file rev) |
fcb500ea AS |
185 | ;; |
186 | ;; Let this backend "receive" a file that is already registered under | |
187 | ;; another backend. The default implementation simply calls `register' | |
188 | ;; for FILE, but it can be overridden to do something more specific, | |
189 | ;; e.g. keep revision numbers consistent or choose editing modes for | |
190 | ;; FILE that resemble those of the other backend. | |
191 | ;; | |
192 | ;; - unregister (file) | |
193 | ;; | |
194 | ;; Unregister FILE from this backend. This is only needed if this | |
195 | ;; backend may be used as a "more local" backend for temporary editing. | |
196 | ;; | |
aae91380 | 197 | ;; * checkin (file rev comment) |
fcb500ea AS |
198 | ;; |
199 | ;; Commit changes in FILE to this backend. If REV is non-nil, that | |
200 | ;; should become the new revision number. COMMENT is used as a | |
201 | ;; check-in comment. | |
202 | ;; | |
203 | ;; * checkout (file &optional editable rev destfile) | |
204 | ;; | |
205 | ;; Check out revision REV of FILE into the working area. If EDITABLE | |
206 | ;; is non-nil, FILE should be writable by the user and if locking is | |
207 | ;; used for FILE, a lock should also be set. If REV is non-nil, that | |
208 | ;; is the revision to check out (default is current workfile version); | |
209 | ;; if REV is the empty string, that means to check out the head of the | |
210 | ;; trunk. If optional arg DESTFILE is given, it is an alternate | |
211 | ;; filename to write the contents to. | |
212 | ;; | |
bbfc07d3 | 213 | ;; * revert (file &optional contents-done) |
fcb500ea | 214 | ;; |
bbfc07d3 AS |
215 | ;; Revert FILE back to the current workfile version. If optional |
216 | ;; arg CONTENTS-DONE is non-nil, then the contents of FILE have | |
217 | ;; already been reverted from a version backup, and this function | |
218 | ;; only needs to update the status of FILE within the backend. | |
fcb500ea AS |
219 | ;; |
220 | ;; - cancel-version (file editable) | |
221 | ;; | |
222 | ;; Cancel the current workfile version of FILE, i.e. remove it from the | |
223 | ;; master. EDITABLE non-nil means that FILE should be writable | |
224 | ;; afterwards, and if locking is used for FILE, then a lock should also | |
225 | ;; be set. If this function is not provided, trying to cancel a | |
226 | ;; version is caught as an error. | |
227 | ;; | |
aae91380 | 228 | ;; - merge (file rev1 rev2) |
fcb500ea AS |
229 | ;; |
230 | ;; Merge the changes between REV1 and REV2 into the current working file. | |
231 | ;; | |
aae91380 | 232 | ;; - merge-news (file) |
fcb500ea AS |
233 | ;; |
234 | ;; Merge recent changes from the current branch into FILE. | |
235 | ;; | |
aae91380 | 236 | ;; - steal-lock (file &optional version) |
fcb500ea AS |
237 | ;; |
238 | ;; Steal any lock on the current workfile version of FILE, or on | |
239 | ;; VERSION if that is provided. This function is only needed if | |
240 | ;; locking is used for files under this backend, and if files can | |
241 | ;; indeed be locked by other users. | |
242 | ;; | |
243 | ;; HISTORY FUNCTIONS | |
244 | ;; | |
aae91380 | 245 | ;; * print-log (file) |
fcb500ea | 246 | ;; |
ad339989 | 247 | ;; Insert the revision log of FILE into the *vc* buffer. |
fcb500ea | 248 | ;; |
aae91380 | 249 | ;; - show-log-entry (version) |
fcb500ea AS |
250 | ;; |
251 | ;; If provided, search the log entry for VERSION in the current buffer, | |
252 | ;; and make sure it is displayed in the buffer's window. The default | |
253 | ;; implementation of this function works for RCS-style logs. | |
254 | ;; | |
aae91380 | 255 | ;; - wash-log (file) |
fcb500ea AS |
256 | ;; |
257 | ;; Remove all non-comment information from the output of print-log. The | |
258 | ;; default implementation of this function works for RCS-style logs. | |
259 | ;; | |
0e362f54 | 260 | ;; - logentry-check () |
fcb500ea AS |
261 | ;; |
262 | ;; If defined, this function is run to find out whether the user | |
263 | ;; entered a valid log entry for check-in. The log entry is in the | |
264 | ;; current buffer, and if it is not a valid one, the function should | |
265 | ;; throw an error. | |
266 | ;; | |
aae91380 | 267 | ;; - comment-history (file) |
fcb500ea AS |
268 | ;; |
269 | ;; Return a string containing all log entries that were made for FILE. | |
270 | ;; This is used for transferring a file from one backend to another, | |
271 | ;; retaining comment information. The default implementation of this | |
272 | ;; function does this by calling print-log and then wash-log, and | |
273 | ;; returning the resulting buffer contents as a string. | |
274 | ;; | |
aae91380 | 275 | ;; - update-changelog (files) |
fcb500ea AS |
276 | ;; |
277 | ;; Using recent log entries, create ChangeLog entries for FILES, or for | |
278 | ;; all files at or below the default-directory if FILES is nil. The | |
279 | ;; default implementation runs rcs2log, which handles RCS- and | |
280 | ;; CVS-style logs. | |
281 | ;; | |
0e362f54 | 282 | ;; * diff (file &optional rev1 rev2) |
fcb500ea | 283 | ;; |
ad339989 | 284 | ;; Insert the diff for FILE into the *vc-diff* buffer. If REV1 and REV2 |
fcb500ea AS |
285 | ;; are non-nil, report differences from REV1 to REV2. If REV1 is nil, |
286 | ;; use the current workfile version (as found in the repository) as the | |
287 | ;; older version; if REV2 is nil, use the current workfile contents as | |
288 | ;; the newer version. This function should return a status of either 0 | |
289 | ;; (no differences found), or 1 (either non-empty diff or the diff is | |
290 | ;; run asynchronously). | |
291 | ;; | |
2c87edc1 AS |
292 | ;; - diff-tree (dir &optional rev1 rev2) |
293 | ;; | |
294 | ;; Insert the diff for all files at and below DIR into the *vc-diff* | |
295 | ;; buffer. The meaning of REV1 and REV2 is the same as for | |
296 | ;; vc-BACKEND-diff. The default implementation does an explicit tree | |
297 | ;; walk, calling vc-BACKEND-diff for each individual file. | |
298 | ;; | |
aae91380 | 299 | ;; - annotate-command (file buf rev) |
fcb500ea AS |
300 | ;; |
301 | ;; If this function is provided, it should produce an annotated version | |
302 | ;; of FILE in BUF, relative to version REV. This is currently only | |
303 | ;; implemented for CVS, using the `cvs annotate' command. | |
304 | ;; | |
75665141 | 305 | ;; - annotate-time () |
fcb500ea AS |
306 | ;; |
307 | ;; Only required if `annotate-command' is defined for the backend. | |
75665141 AS |
308 | ;; Return the time of the next line of annotation at or after point, |
309 | ;; as a floating point fractional number of days. The helper | |
310 | ;; function `vc-annotate-convert-time' may be useful for converting | |
311 | ;; multi-part times as returned by `current-time' and `encode-time' | |
312 | ;; to this format. Return NIL if no more lines of annotation appear | |
313 | ;; in the buffer. You can safely assume that point is placed at the | |
314 | ;; beginning of each line, starting at `point-min'. The buffer that | |
315 | ;; point is placed in is the Annotate output, as defined by the | |
316 | ;; relevant backend. | |
317 | ;; | |
318 | ;; - annotate-current-time () | |
319 | ;; | |
320 | ;; Only required if `annotate-command' is defined for the backend, | |
321 | ;; AND you'd like the current time considered to be anything besides | |
322 | ;; (vs-annotate-convert-time (current-time)) -- i.e. the current | |
323 | ;; time with hours, minutes, and seconds included. Probably safe to | |
324 | ;; ignore. Return the current-time, in units of fractional days. | |
fcb500ea AS |
325 | ;; |
326 | ;; SNAPSHOT SYSTEM | |
327 | ;; | |
0e362f54 | 328 | ;; - create-snapshot (dir name branchp) |
fcb500ea AS |
329 | ;; |
330 | ;; Take a snapshot of the current state of files under DIR and name it | |
331 | ;; NAME. This should make sure that files are up-to-date before | |
332 | ;; proceeding with the action. DIR can also be a file and if BRANCHP | |
333 | ;; is specified, NAME should be created as a branch and DIR should be | |
334 | ;; checked out under this new branch. The default implementation does | |
335 | ;; not support branches but does a sanity check, a tree traversal and | |
336 | ;; for each file calls `assign-name'. | |
337 | ;; | |
338 | ;; - assign-name (file name) | |
339 | ;; | |
340 | ;; Give name NAME to the current version of FILE, assuming it is | |
341 | ;; up-to-date. Only used by the default version of `create-snapshot'. | |
342 | ;; | |
0e362f54 | 343 | ;; - retrieve-snapshot (dir name update) |
fcb500ea AS |
344 | ;; |
345 | ;; Retrieve a named snapshot of all registered files at or below DIR. | |
346 | ;; If UPDATE is non-nil, then update buffers of any files in the | |
347 | ;; snapshot that are currently visited. The default implementation | |
348 | ;; does a sanity check whether there aren't any uncommitted changes at | |
349 | ;; or below DIR, and then performs a tree walk, using the `checkout' | |
350 | ;; function to retrieve the corresponding versions. | |
351 | ;; | |
352 | ;; MISCELLANEOUS | |
353 | ;; | |
aae91380 | 354 | ;; - make-version-backups-p (file) |
fcb500ea AS |
355 | ;; |
356 | ;; Return non-nil if unmodified repository versions of FILE should be | |
357 | ;; backed up locally. If this is done, VC can perform `diff' and | |
358 | ;; `revert' operations itself, without calling the backend system. The | |
359 | ;; default implementation always returns nil. | |
360 | ;; | |
aae91380 | 361 | ;; - check-headers () |
fcb500ea AS |
362 | ;; |
363 | ;; Return non-nil if the current buffer contains any version headers. | |
364 | ;; | |
aae91380 | 365 | ;; - clear-headers () |
fcb500ea AS |
366 | ;; |
367 | ;; In the current buffer, reset all version headers to their unexpanded | |
368 | ;; form. This function should be provided if the state-querying code | |
369 | ;; for this backend uses the version headers to determine the state of | |
370 | ;; a file. This function will then be called whenever VC changes the | |
371 | ;; version control state in such a way that the headers would give | |
372 | ;; wrong information. | |
373 | ;; | |
099bd78a | 374 | ;; - rename-file (old new) |
fcb500ea AS |
375 | ;; |
376 | ;; Rename file OLD to NEW, both in the working area and in the | |
377 | ;; repository. If this function is not provided, the command | |
378 | ;; `vc-rename-file' will signal an error. | |
aae91380 | 379 | |
fcb500ea | 380 | ;;; Code: |
0e362f54 | 381 | |
594722a8 | 382 | (require 'vc-hooks) |
8c0aaf40 | 383 | (require 'ring) |
0e362f54 | 384 | (eval-when-compile |
7849e179 | 385 | (require 'cl) |
099bd78a SM |
386 | (require 'compile) |
387 | (require 'dired) ; for dired-map-over-marks macro | |
388 | (require 'dired-aux)) ; for dired-kill-{line,tree} | |
8c0aaf40 ER |
389 | |
390 | (if (not (assoc 'vc-parent-buffer minor-mode-alist)) | |
391 | (setq minor-mode-alist | |
392 | (cons '(vc-parent-buffer vc-parent-buffer-name) | |
393 | minor-mode-alist))) | |
594722a8 ER |
394 | |
395 | ;; General customization | |
396 | ||
0101cc40 RS |
397 | (defgroup vc nil |
398 | "Version-control system in Emacs." | |
399 | :group 'tools) | |
400 | ||
401 | (defcustom vc-suppress-confirm nil | |
402 | "*If non-nil, treat user as expert; suppress yes-no prompts on some things." | |
403 | :type 'boolean | |
404 | :group 'vc) | |
405 | ||
2c4eea90 KH |
406 | (defcustom vc-delete-logbuf-window t |
407 | "*If non-nil, delete the *VC-log* buffer and window after each logical action. | |
408 | If nil, bury that buffer instead. | |
409 | This is most useful if you have multiple windows on a frame and would like to | |
410 | preserve the setting." | |
411 | :type 'boolean | |
412 | :group 'vc) | |
413 | ||
0101cc40 RS |
414 | (defcustom vc-initial-comment nil |
415 | "*If non-nil, prompt for initial comment when a file is registered." | |
416 | :type 'boolean | |
417 | :group 'vc) | |
418 | ||
0d53f466 AS |
419 | (defcustom vc-default-init-version "1.1" |
420 | "*A string used as the default version number when a new file is registered. | |
0e362f54 | 421 | This can be overridden by giving a prefix argument to \\[vc-register]." |
0d53f466 | 422 | :type 'string |
cd32a7ba DN |
423 | :group 'vc |
424 | :version "20.3") | |
0d53f466 | 425 | |
0101cc40 RS |
426 | (defcustom vc-command-messages nil |
427 | "*If non-nil, display run messages from back-end commands." | |
428 | :type 'boolean | |
429 | :group 'vc) | |
430 | ||
431 | (defcustom vc-checkin-switches nil | |
432 | "*A string or list of strings specifying extra switches for checkin. | |
433 | These are passed to the checkin program by \\[vc-checkin]." | |
434 | :type '(choice (const :tag "None" nil) | |
435 | (string :tag "Argument String") | |
436 | (repeat :tag "Argument List" | |
437 | :value ("") | |
438 | string)) | |
439 | :group 'vc) | |
440 | ||
441 | (defcustom vc-checkout-switches nil | |
442 | "*A string or list of strings specifying extra switches for checkout. | |
443 | These are passed to the checkout program by \\[vc-checkout]." | |
444 | :type '(choice (const :tag "None" nil) | |
445 | (string :tag "Argument String") | |
446 | (repeat :tag "Argument List" | |
447 | :value ("") | |
448 | string)) | |
449 | :group 'vc) | |
450 | ||
451 | (defcustom vc-register-switches nil | |
452 | "*A string or list of strings; extra switches for registering a file. | |
453 | These are passed to the checkin program by \\[vc-register]." | |
454 | :type '(choice (const :tag "None" nil) | |
455 | (string :tag "Argument String") | |
456 | (repeat :tag "Argument List" | |
457 | :value ("") | |
458 | string)) | |
459 | :group 'vc) | |
460 | ||
0e362f54 GM |
461 | (defcustom vc-dired-listing-switches "-al" |
462 | "*Switches passed to `ls' for vc-dired. MUST contain the `l' option." | |
463 | :type 'string | |
464 | :group 'vc | |
6f41eeb5 | 465 | :version "21.1") |
0e362f54 | 466 | |
3b574573 AS |
467 | (defcustom vc-dired-recurse t |
468 | "*If non-nil, show directory trees recursively in VC Dired." | |
469 | :type 'boolean | |
470 | :group 'vc | |
471 | :version "20.3") | |
472 | ||
473 | (defcustom vc-dired-terse-display t | |
474 | "*If non-nil, show only locked files in VC Dired." | |
475 | :type 'boolean | |
476 | :group 'vc | |
477 | :version "20.3") | |
478 | ||
0101cc40 RS |
479 | (defcustom vc-directory-exclusion-list '("SCCS" "RCS" "CVS") |
480 | "*List of directory names to be ignored while recursively walking file trees." | |
481 | :type '(repeat string) | |
482 | :group 'vc) | |
666a0ebb | 483 | |
8c0aaf40 ER |
484 | (defconst vc-maximum-comment-ring-size 32 |
485 | "Maximum number of saved comments in the comment ring.") | |
486 | ||
acc5b122 AS |
487 | (defcustom vc-diff-switches nil |
488 | "*A string or list of strings specifying switches for diff under VC. | |
489 | There is also an option vc-BACKEND-diff-switches for each BACKEND that | |
490 | VC can handle." | |
491 | :type '(choice (const :tag "None" nil) | |
492 | (string :tag "Argument String") | |
493 | (repeat :tag "Argument List" | |
494 | :value ("") | |
495 | string)) | |
496 | :group 'vc | |
497 | :version "21.1") | |
498 | ||
7cad930d AS |
499 | ;;;###autoload |
500 | (defcustom vc-checkout-hook nil | |
501 | "*Normal hook (list of functions) run after a file has been checked out. | |
502 | See `run-hooks'." | |
503 | :type 'hook | |
504 | :group 'vc | |
505 | :version "21.1") | |
506 | ||
75665141 AS |
507 | (defcustom vc-annotate-display-mode nil |
508 | "Which mode to color the annotations with by default." | |
509 | :type '(choice (const :tag "Default" nil) | |
510 | (const :tag "Scale to Oldest" scale) | |
511 | (const :tag "Scale Oldest->Newest" fullscale) | |
512 | (number :tag "Specify Fractional Number of Days" | |
513 | :value "20.5")) | |
514 | :group 'vc) | |
515 | ||
0e362f54 GM |
516 | ;;;###autoload |
517 | (defcustom vc-checkin-hook nil | |
518 | "*Normal hook (list of functions) run after a checkin is done. | |
519 | See `run-hooks'." | |
520 | :type 'hook | |
521 | :options '(vc-comment-to-change-log) | |
522 | :group 'vc) | |
523 | ||
524 | ;;;###autoload | |
525 | (defcustom vc-before-checkin-hook nil | |
526 | "*Normal hook (list of functions) run before a file gets checked in. | |
527 | See `run-hooks'." | |
528 | :type 'hook | |
529 | :group 'vc) | |
530 | ||
531 | (defcustom vc-logentry-check-hook nil | |
532 | "*Normal hook run by `vc-backend-logentry-check'. | |
533 | Use this to impose your own rules on the entry in addition to any the | |
534 | version control backend imposes itself." | |
535 | :type 'hook | |
536 | :group 'vc) | |
2e810285 | 537 | |
0e362f54 | 538 | ;; Annotate customization |
7d2d9482 | 539 | (defcustom vc-annotate-color-map |
75665141 AS |
540 | '(( 20. . "#FF0000") |
541 | ( 40. . "#FF3800") | |
542 | ( 60. . "#FF7000") | |
543 | ( 80. . "#FFA800") | |
544 | (100. . "#FFE000") | |
545 | (120. . "#E7FF00") | |
546 | (140. . "#AFFF00") | |
547 | (160. . "#77FF00") | |
548 | (180. . "#3FFF00") | |
549 | (200. . "#07FF00") | |
550 | (220. . "#00FF31") | |
551 | (240. . "#00FF69") | |
552 | (260. . "#00FFA1") | |
553 | (280. . "#00FFD9") | |
554 | (300. . "#00EEFF") | |
555 | (320. . "#00B6FF") | |
556 | (340. . "#007EFF")) | |
557 | "*ASSOCIATION list of age versus color, for \\[vc-annotate]. | |
558 | Ages are given in units of fractional days. Default is eighteen steps | |
559 | using a twenty day increment." | |
0e362f54 | 560 | :type 'alist |
7d2d9482 RS |
561 | :group 'vc) |
562 | ||
563 | (defcustom vc-annotate-very-old-color "#0046FF" | |
564 | "*Color for lines older than CAR of last cons in `vc-annotate-color-map'." | |
565 | :type 'string | |
566 | :group 'vc) | |
567 | ||
568 | (defcustom vc-annotate-background "black" | |
569 | "*Background color for \\[vc-annotate]. | |
570 | Default color is used if nil." | |
571 | :type 'string | |
572 | :group 'vc) | |
573 | ||
574 | (defcustom vc-annotate-menu-elements '(2 0.5 0.1 0.01) | |
575 | "*Menu elements for the mode-specific menu of VC-Annotate mode. | |
576 | List of factors, used to expand/compress the time scale. See `vc-annotate'." | |
0e362f54 | 577 | :type '(repeat number) |
7d2d9482 RS |
578 | :group 'vc) |
579 | ||
0e362f54 GM |
580 | ;; vc-annotate functionality (CVS only). |
581 | (defvar vc-annotate-mode nil | |
582 | "Variable indicating if VC-Annotate mode is active.") | |
f0b188ed | 583 | |
0e362f54 GM |
584 | (defvar vc-annotate-mode-map |
585 | (let ((m (make-sparse-keymap))) | |
586 | (define-key m [menu-bar] (make-sparse-keymap "VC-Annotate")) | |
587 | m) | |
588 | "Local keymap used for VC-Annotate mode.") | |
67242a23 | 589 | |
0e362f54 GM |
590 | (defvar vc-annotate-mode-menu nil |
591 | "Local keymap used for VC-Annotate mode's menu bar menu.") | |
7d2d9482 | 592 | |
594722a8 ER |
593 | ;; Header-insertion hair |
594 | ||
0101cc40 | 595 | (defcustom vc-static-header-alist |
594722a8 ER |
596 | '(("\\.c$" . |
597 | "\n#ifndef lint\nstatic char vcid[] = \"\%s\";\n#endif /* lint */\n")) | |
0e362f54 GM |
598 | "*Associate static header string templates with file types. |
599 | A \%s in the template is replaced with the first string associated with | |
099bd78a | 600 | the file's version control type in `vc-header-alist'." |
0101cc40 RS |
601 | :type '(repeat (cons :format "%v" |
602 | (regexp :tag "File Type") | |
603 | (string :tag "Header String"))) | |
604 | :group 'vc) | |
7b4f934d | 605 | |
0101cc40 | 606 | (defcustom vc-comment-alist |
594722a8 ER |
607 | '((nroff-mode ".\\\"" "")) |
608 | "*Special comment delimiters to be used in generating vc headers only. | |
099bd78a SM |
609 | Add an entry in this list if you need to override the normal `comment-start' |
610 | and `comment-end' variables. This will only be necessary if the mode language | |
0101cc40 RS |
611 | is sensitive to blank lines." |
612 | :type '(repeat (list :format "%v" | |
613 | (symbol :tag "Mode") | |
614 | (string :tag "Comment Start") | |
615 | (string :tag "Comment End"))) | |
616 | :group 'vc) | |
594722a8 | 617 | |
bbf97570 | 618 | ;; Default is to be extra careful for super-user. |
6f41eeb5 DL |
619 | ;; TODO: This variable is no longer used; the corresponding checks |
620 | ;; are always done now. If that turns out to be fast enough, | |
0e362f54 | 621 | ;; the variable can be obsoleted. |
0101cc40 | 622 | (defcustom vc-checkout-carefully (= (user-uid) 0) |
bbf97570 RS |
623 | "*Non-nil means be extra-careful in checkout. |
624 | Verify that the file really is not locked | |
0101cc40 RS |
625 | and that its contents match what the master file says." |
626 | :type 'boolean | |
627 | :group 'vc) | |
bbf97570 | 628 | |
0e362f54 | 629 | \f |
ec402ad4 | 630 | ;; The main keymap |
b0c9bc8c | 631 | |
0e362f54 GM |
632 | ;; Initialization code, to be done just once at load-time |
633 | (defvar vc-log-mode-map | |
634 | (let ((map (make-sparse-keymap))) | |
635 | (define-key map "\M-n" 'vc-next-comment) | |
636 | (define-key map "\M-p" 'vc-previous-comment) | |
637 | (define-key map "\M-r" 'vc-comment-search-reverse) | |
638 | (define-key map "\M-s" 'vc-comment-search-forward) | |
639 | (define-key map "\C-c\C-c" 'vc-finish-logentry) | |
640 | map)) | |
641 | ;; Compatibility with old name. Should we bother ? | |
642 | (defvar vc-log-entry-mode vc-log-mode-map) | |
b0c9bc8c | 643 | |
0e362f54 | 644 | \f |
594722a8 | 645 | ;; Variables the user doesn't need to know about. |
594722a8 | 646 | (defvar vc-log-operation nil) |
67242a23 | 647 | (defvar vc-log-after-operation-hook nil) |
0e362f54 | 648 | (defvar vc-annotate-buffers nil |
099bd78a SM |
649 | "Alist of current \"Annotate\" buffers and their corresponding backends. |
650 | The keys are \(BUFFER . BACKEND\). See also `vc-annotate-get-backend'.") | |
dbf87856 RS |
651 | ;; In a log entry buffer, this is a local variable |
652 | ;; that points to the buffer for which it was made | |
653 | ;; (either a file, or a VC dired buffer). | |
1a2f456b | 654 | (defvar vc-parent-buffer nil) |
0e362f54 | 655 | (put 'vc-parent-buffer 'permanent-local t) |
8c0aaf40 | 656 | (defvar vc-parent-buffer-name nil) |
0e362f54 | 657 | (put 'vc-parent-buffer-name 'permanent-local t) |
594722a8 | 658 | |
db59472c RS |
659 | (defvar vc-log-file) |
660 | (defvar vc-log-version) | |
661 | ||
8c0aaf40 | 662 | (defvar vc-dired-mode nil) |
e1f297e6 ER |
663 | (make-variable-buffer-local 'vc-dired-mode) |
664 | ||
c9b35ece | 665 | (defvar vc-comment-ring (make-ring vc-maximum-comment-ring-size)) |
8c0aaf40 | 666 | (defvar vc-comment-ring-index nil) |
0e362f54 | 667 | (defvar vc-last-comment-match "") |
c8de1d91 | 668 | |
ec402ad4 SM |
669 | ;; functions that operate on RCS revision numbers. This code should |
670 | ;; also be moved into the backends. It stays for now, however, since | |
671 | ;; it is used in code below. | |
c8de1d91 | 672 | (defun vc-trunk-p (rev) |
099bd78a | 673 | "Return t if REV is a revision on the trunk." |
c8de1d91 AS |
674 | (not (eq nil (string-match "\\`[0-9]+\\.[0-9]+\\'" rev)))) |
675 | ||
ccb141e8 | 676 | (defun vc-branch-p (rev) |
099bd78a | 677 | "Return t if REV is a branch revision." |
ccb141e8 AS |
678 | (not (eq nil (string-match "\\`[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*\\'" rev)))) |
679 | ||
c8de1d91 | 680 | (defun vc-branch-part (rev) |
099bd78a | 681 | "Return the branch part of a revision number REV." |
c8de1d91 AS |
682 | (substring rev 0 (string-match "\\.[0-9]+\\'" rev))) |
683 | ||
c0d66cb2 | 684 | (defun vc-minor-part (rev) |
099bd78a | 685 | "Return the minor version number of a revision number REV." |
c0d66cb2 RS |
686 | (string-match "[0-9]+\\'" rev) |
687 | (substring rev (match-beginning 0) (match-end 0))) | |
688 | ||
689 | (defun vc-previous-version (rev) | |
099bd78a | 690 | "Guess the version number immediately preceding REV." |
c0d66cb2 RS |
691 | (let ((branch (vc-branch-part rev)) |
692 | (minor-num (string-to-number (vc-minor-part rev)))) | |
693 | (if (> minor-num 1) | |
694 | ;; version does probably not start a branch or release | |
695 | (concat branch "." (number-to-string (1- minor-num))) | |
696 | (if (vc-trunk-p rev) | |
697 | ;; we are at the beginning of the trunk -- | |
698 | ;; don't know anything to return here | |
699 | "" | |
700 | ;; we are at the beginning of a branch -- | |
701 | ;; return version of starting point | |
702 | (vc-branch-part branch))))) | |
703 | ||
594722a8 ER |
704 | ;; File property caching |
705 | ||
8c0aaf40 ER |
706 | (defun vc-clear-context () |
707 | "Clear all cached file properties and the comment ring." | |
708 | (interactive) | |
709 | (fillarray vc-file-prop-obarray nil) | |
710 | ;; Note: there is potential for minor lossage here if there is an open | |
711 | ;; log buffer with a nonzero local value of vc-comment-ring-index. | |
c9b35ece | 712 | (setq vc-comment-ring (make-ring vc-maximum-comment-ring-size))) |
8c0aaf40 | 713 | |
099bd78a | 714 | (defmacro with-vc-properties (file form settings) |
a3255400 SM |
715 | "Execute FORM, then set per-file properties for FILE, |
716 | but only those that have not been set during the execution of FORM. | |
717 | SETTINGS is a list of two-element lists, each of which has the | |
718 | form (PROPERTY . VALUE)." | |
099bd78a SM |
719 | `(let ((vc-touched-properties (list t)) |
720 | (filename ,file)) | |
721 | ,form | |
722 | (mapcar (lambda (setting) | |
a3255400 | 723 | (let ((property (car setting))) |
099bd78a | 724 | (unless (memq property vc-touched-properties) |
46e33aee | 725 | (put (intern filename vc-file-prop-obarray) |
a3255400 | 726 | property (cdr setting))))) |
099bd78a SM |
727 | ,settings))) |
728 | ||
594722a8 ER |
729 | ;; Random helper functions |
730 | ||
0e362f54 GM |
731 | (defsubst vc-editable-p (file) |
732 | (or (eq (vc-checkout-model file) 'implicit) | |
7849e179 | 733 | (memq (vc-state file) '(edited needs-merge)))) |
c8de1d91 | 734 | |
ec402ad4 | 735 | ;; Two macros for elisp programming |
709822e8 AS |
736 | ;;;###autoload |
737 | (defmacro with-vc-file (file comment &rest body) | |
0e362f54 GM |
738 | "Check out a writable copy of FILE if necessary and execute the body. |
739 | Check in FILE with COMMENT (a string) after BODY has been executed. | |
740 | FILE is passed through `expand-file-name'; BODY executed within | |
741 | `save-excursion'. If FILE is not under version control, or locked by | |
709822e8 AS |
742 | somebody else, signal error." |
743 | `(let ((file (expand-file-name ,file))) | |
ceec5a0c | 744 | (or (vc-backend file) |
709822e8 | 745 | (error (format "File not under version control: `%s'" file))) |
0e362f54 GM |
746 | (unless (vc-editable-p file) |
747 | (let ((state (vc-state file))) | |
748 | (if (stringp state) (error (format "`%s' is locking `%s'" state file)) | |
749 | (vc-checkout file t)))) | |
709822e8 AS |
750 | (save-excursion |
751 | ,@body) | |
752 | (vc-checkin file nil ,comment))) | |
46e33aee | 753 | (put 'with-vc-file 'indent-function 1) |
709822e8 AS |
754 | |
755 | ;;;###autoload | |
756 | (defmacro edit-vc-file (file comment &rest body) | |
0e362f54 GM |
757 | "Edit FILE under version control, executing body. |
758 | Checkin with COMMENT after executing BODY. | |
709822e8 AS |
759 | This macro uses `with-vc-file', passing args to it. |
760 | However, before executing BODY, find FILE, and after BODY, save buffer." | |
761 | `(with-vc-file | |
762 | ,file ,comment | |
7849e179 | 763 | (set-buffer (find-file-noselect ,file)) |
709822e8 AS |
764 | ,@body |
765 | (save-buffer))) | |
46e33aee | 766 | (put 'edit-vc-file 'indent-function 1) |
709822e8 | 767 | |
b6909007 | 768 | (defun vc-ensure-vc-buffer () |
099bd78a | 769 | "Make sure that the current buffer visits a version-controlled file." |
b6909007 AS |
770 | (if vc-dired-mode |
771 | (set-buffer (find-file-noselect (dired-get-filename))) | |
772 | (while vc-parent-buffer | |
773 | (pop-to-buffer vc-parent-buffer)) | |
774 | (if (not (buffer-file-name)) | |
775 | (error "Buffer %s is not associated with a file" (buffer-name)) | |
776 | (if (not (vc-backend (buffer-file-name))) | |
777 | (error "File %s is not under version control" (buffer-file-name)))))) | |
7ef84cf9 | 778 | |
594722a8 | 779 | (defvar vc-binary-assoc nil) |
87a00c4f EZ |
780 | (defvar vc-binary-suffixes |
781 | (if (memq system-type '(ms-dos windows-nt)) | |
782 | '(".exe" ".com" ".bat" ".cmd" ".btm" "") | |
783 | '(""))) | |
0e362f54 GM |
784 | |
785 | (defun vc-process-filter (p s) | |
099bd78a | 786 | "An alternative output filter for async process P. |
0e362f54 GM |
787 | The only difference with the default filter is to insert S after markers." |
788 | (with-current-buffer (process-buffer p) | |
789 | (save-excursion | |
790 | (let ((inhibit-read-only t)) | |
791 | (goto-char (process-mark p)) | |
792 | (insert s) | |
793 | (set-marker (process-mark p) (point)))))) | |
794 | ||
795 | (defun vc-setup-buffer (&optional buf) | |
099bd78a | 796 | "Prepare BUF for executing a VC command and make it the current buffer. |
0e362f54 GM |
797 | BUF defaults to \"*vc*\", can be a string and will be created if necessary." |
798 | (unless buf (setq buf "*vc*")) | |
799 | (let ((camefrom (current-buffer)) | |
800 | (olddir default-directory)) | |
801 | (set-buffer (get-buffer-create buf)) | |
802 | (kill-all-local-variables) | |
803 | (set (make-local-variable 'vc-parent-buffer) camefrom) | |
804 | (set (make-local-variable 'vc-parent-buffer-name) | |
805 | (concat " from " (buffer-name camefrom))) | |
806 | (setq default-directory olddir) | |
807 | (let ((inhibit-read-only t)) | |
808 | (erase-buffer)))) | |
809 | ||
810 | (defun vc-exec-after (code) | |
811 | "Eval CODE when the current buffer's process is done. | |
812 | If the current buffer has no process, just evaluate CODE. | |
813 | Else, add CODE to the process' sentinel." | |
814 | (let ((proc (get-buffer-process (current-buffer)))) | |
815 | (cond | |
816 | ;; If there's no background process, just execute the code. | |
817 | ((null proc) (eval code)) | |
818 | ;; If the background process has exited, reap it and try again | |
819 | ((eq (process-status proc) 'exit) | |
820 | (delete-process proc) | |
821 | (vc-exec-after code)) | |
822 | ;; If a process is running, add CODE to the sentinel | |
823 | ((eq (process-status proc) 'run) | |
824 | (let ((sentinel (process-sentinel proc))) | |
825 | (set-process-sentinel proc | |
826 | `(lambda (p s) | |
827 | (with-current-buffer ',(current-buffer) | |
828 | (goto-char (process-mark p)) | |
6f41eeb5 | 829 | ,@(append (cdr (cdr (cdr ;strip off `with-current-buffer buf |
0e362f54 GM |
830 | ; (goto-char...)' |
831 | (car (cdr (cdr ;strip off `lambda (p s)' | |
832 | sentinel)))))) | |
833 | (list `(vc-exec-after ',code)))))))) | |
834 | (t (error "Unexpected process state")))) | |
835 | nil) | |
836 | ||
837 | (defvar vc-post-command-functions nil | |
838 | "Hook run at the end of `vc-do-command'. | |
839 | Each function is called inside the buffer in which the command was run | |
840 | and is passed 3 argument: the COMMAND, the FILE and the FLAGS.") | |
841 | ||
a84b80ba | 842 | ;;;###autoload |
0e362f54 | 843 | (defun vc-do-command (buffer okstatus command file &rest flags) |
099bd78a | 844 | "Execute a version control command, notifying user and checking for errors. |
ad339989 AS |
845 | Output from COMMAND goes to BUFFER, or *vc* if BUFFER is nil or the |
846 | current buffer if BUFFER is t. If the destination buffer is not | |
847 | already current, set it up properly and erase it. The command is | |
848 | considered successful if its exit status does not exceed OKSTATUS (if | |
849 | OKSTATUS is nil, that means to ignore errors, if it is 'async, that | |
850 | means not to wait for termination of the subprocess). FILE is the | |
851 | name of the working file (may also be nil, to execute commands that | |
852 | don't expect a file name). If an optional list of FLAGS is present, | |
0e362f54 | 853 | that is inserted into the command line before the filename." |
b0c9bc8c | 854 | (and file (setq file (expand-file-name file))) |
594722a8 | 855 | (if vc-command-messages |
02da6253 | 856 | (message "Running %s on %s..." command file)) |
0e362f54 | 857 | (save-current-buffer |
ad339989 AS |
858 | (unless (or (eq buffer t) |
859 | (and (stringp buffer) | |
860 | (string= (buffer-name) buffer)) | |
861 | (eq buffer (current-buffer))) | |
862 | (vc-setup-buffer buffer)) | |
0e362f54 GM |
863 | (let ((squeezed nil) |
864 | (inhibit-read-only t) | |
865 | (status 0)) | |
866 | (setq squeezed (delq nil (copy-sequence flags))) | |
867 | (when file | |
868 | ;; FIXME: file-relative-name can return a bogus result because | |
869 | ;; it doesn't look at the actual file-system to see if symlinks | |
870 | ;; come into play. | |
871 | (setq squeezed (append squeezed (list (file-relative-name file))))) | |
872 | (let ((exec-path (append vc-path exec-path)) | |
873 | ;; Add vc-path to PATH for the execution of this command. | |
874 | (process-environment | |
875 | (cons (concat "PATH=" (getenv "PATH") | |
876 | path-separator | |
877 | (mapconcat 'identity vc-path path-separator)) | |
878 | process-environment)) | |
879 | (w32-quote-process-args t)) | |
880 | (if (eq okstatus 'async) | |
881 | (let ((proc (apply 'start-process command (current-buffer) command | |
882 | squeezed))) | |
d9ed4100 AS |
883 | (unless (active-minibuffer-window) |
884 | (message "Running %s in the background..." command)) | |
0e362f54 GM |
885 | ;;(set-process-sentinel proc (lambda (p msg) (delete-process p))) |
886 | (set-process-filter proc 'vc-process-filter) | |
887 | (vc-exec-after | |
d9ed4100 AS |
888 | `(unless (active-minibuffer-window) |
889 | (message "Running %s in the background... done" ',command)))) | |
0e362f54 GM |
890 | (setq status (apply 'call-process command nil t nil squeezed)) |
891 | (when (or (not (integerp status)) (and okstatus (< okstatus status))) | |
892 | (pop-to-buffer (current-buffer)) | |
893 | (goto-char (point-min)) | |
894 | (shrink-window-if-larger-than-buffer) | |
895 | (error "Running %s...FAILED (%s)" command | |
896 | (if (integerp status) (format "status %d" status) status)))) | |
897 | (if vc-command-messages | |
898 | (message "Running %s...OK" command))) | |
899 | (vc-exec-after | |
900 | `(run-hook-with-args 'vc-post-command-functions ',command ',file ',flags)) | |
901 | status))) | |
594722a8 | 902 | |
c4ae7096 | 903 | (defun vc-position-context (posn) |
099bd78a SM |
904 | "Save a bit of the text around POSN in the current buffer. |
905 | Used to help us find the corresponding position again later | |
906 | if markers are destroyed or corrupted." | |
0e362f54 GM |
907 | ;; A lot of this was shamelessly lifted from Sebastian Kremer's |
908 | ;; rcs.el mode. | |
c4ae7096 JB |
909 | (list posn |
910 | (buffer-size) | |
911 | (buffer-substring posn | |
912 | (min (point-max) (+ posn 100))))) | |
913 | ||
c4ae7096 | 914 | (defun vc-find-position-by-context (context) |
099bd78a | 915 | "Return the position of CONTEXT in the current buffer, or nil if not found." |
c4ae7096 JB |
916 | (let ((context-string (nth 2 context))) |
917 | (if (equal "" context-string) | |
918 | (point-max) | |
919 | (save-excursion | |
920 | (let ((diff (- (nth 1 context) (buffer-size)))) | |
921 | (if (< diff 0) (setq diff (- diff))) | |
922 | (goto-char (nth 0 context)) | |
923 | (if (or (search-forward context-string nil t) | |
924 | ;; Can't use search-backward since the match may continue | |
925 | ;; after point. | |
926 | (progn (goto-char (- (point) diff (length context-string))) | |
927 | ;; goto-char doesn't signal an error at | |
928 | ;; beginning of buffer like backward-char would | |
929 | (search-forward context-string nil t))) | |
930 | ;; to beginning of OSTRING | |
931 | (- (point) (length context-string)))))))) | |
932 | ||
4b398f5d | 933 | (defun vc-context-matches-p (posn context) |
099bd78a | 934 | "Return t if POSN matches CONTEXT, nil otherwise." |
4b398f5d AS |
935 | (let* ((context-string (nth 2 context)) |
936 | (len (length context-string)) | |
937 | (end (+ posn len))) | |
938 | (if (> end (1+ (buffer-size))) | |
939 | nil | |
940 | (string= context-string (buffer-substring posn end))))) | |
941 | ||
c8de1d91 | 942 | (defun vc-buffer-context () |
099bd78a SM |
943 | "Return a list (POINT-CONTEXT MARK-CONTEXT REPARSE). |
944 | Used by `vc-restore-buffer-context' to later restore the context." | |
c4ae7096 | 945 | (let ((point-context (vc-position-context (point))) |
cfadef63 RS |
946 | ;; Use mark-marker to avoid confusion in transient-mark-mode. |
947 | (mark-context (if (eq (marker-buffer (mark-marker)) (current-buffer)) | |
948 | (vc-position-context (mark-marker)))) | |
949 | ;; Make the right thing happen in transient-mark-mode. | |
ab877583 RM |
950 | (mark-active nil) |
951 | ;; We may want to reparse the compilation buffer after revert | |
952 | (reparse (and (boundp 'compilation-error-list) ;compile loaded | |
953 | (let ((curbuf (current-buffer))) | |
954 | ;; Construct a list; each elt is nil or a buffer | |
955 | ;; iff that buffer is a compilation output buffer | |
956 | ;; that contains markers into the current buffer. | |
957 | (save-excursion | |
0e362f54 | 958 | (mapcar (lambda (buffer) |
ab877583 RM |
959 | (set-buffer buffer) |
960 | (let ((errors (or | |
961 | compilation-old-error-list | |
962 | compilation-error-list)) | |
963 | (buffer-error-marked-p nil)) | |
6fb6ab11 | 964 | (while (and (consp errors) |
ab877583 | 965 | (not buffer-error-marked-p)) |
a1bda481 | 966 | (and (markerp (cdr (car errors))) |
e9c8e248 RM |
967 | (eq buffer |
968 | (marker-buffer | |
a1bda481 | 969 | (cdr (car errors)))) |
e9c8e248 | 970 | (setq buffer-error-marked-p t)) |
ab877583 | 971 | (setq errors (cdr errors))) |
0e362f54 | 972 | (if buffer-error-marked-p buffer))) |
ab877583 | 973 | (buffer-list))))))) |
c8de1d91 AS |
974 | (list point-context mark-context reparse))) |
975 | ||
976 | (defun vc-restore-buffer-context (context) | |
0e362f54 | 977 | "Restore point/mark, and reparse any affected compilation buffers. |
099bd78a | 978 | CONTEXT is that which `vc-buffer-context' returns." |
c8de1d91 AS |
979 | (let ((point-context (nth 0 context)) |
980 | (mark-context (nth 1 context)) | |
981 | (reparse (nth 2 context))) | |
ab877583 RM |
982 | ;; Reparse affected compilation buffers. |
983 | (while reparse | |
984 | (if (car reparse) | |
0e362f54 | 985 | (with-current-buffer (car reparse) |
ab877583 RM |
986 | (let ((compilation-last-buffer (current-buffer)) ;select buffer |
987 | ;; Record the position in the compilation buffer of | |
988 | ;; the last error next-error went to. | |
989 | (error-pos (marker-position | |
990 | (car (car-safe compilation-error-list))))) | |
991 | ;; Reparse the error messages as far as they were parsed before. | |
992 | (compile-reinitialize-errors '(4) compilation-parsing-end) | |
993 | ;; Move the pointer up to find the error we were at before | |
994 | ;; reparsing. Now next-error should properly go to the next one. | |
995 | (while (and compilation-error-list | |
27f2f10b | 996 | (/= error-pos (car (car compilation-error-list)))) |
ab877583 RM |
997 | (setq compilation-error-list (cdr compilation-error-list)))))) |
998 | (setq reparse (cdr reparse))) | |
e1f297e6 | 999 | |
4b398f5d AS |
1000 | ;; if necessary, restore point and mark |
1001 | (if (not (vc-context-matches-p (point) point-context)) | |
1002 | (let ((new-point (vc-find-position-by-context point-context))) | |
1003 | (if new-point (goto-char new-point)))) | |
01e02ab3 AS |
1004 | (and mark-active |
1005 | mark-context | |
1006 | (not (vc-context-matches-p (mark) mark-context)) | |
1007 | (let ((new-mark (vc-find-position-by-context mark-context))) | |
1008 | (if new-mark (set-mark new-mark)))))) | |
c4ae7096 | 1009 | |
c8de1d91 | 1010 | (defun vc-revert-buffer1 (&optional arg no-confirm) |
099bd78a SM |
1011 | "Revert buffer, trying to keep point and mark where user expects them. |
1012 | Tries to be clever in the face of changes due to expanded version control | |
1013 | key words. This is important for typeahead to work as expected. | |
1014 | ARG and NO-CONFIRM are passed on to `revert-buffer'." | |
c8de1d91 AS |
1015 | (interactive "P") |
1016 | (widen) | |
1017 | (let ((context (vc-buffer-context))) | |
4b398f5d AS |
1018 | ;; Use save-excursion here, because it may be able to restore point |
1019 | ;; and mark properly even in cases where vc-restore-buffer-context | |
0e362f54 | 1020 | ;; would fail. However, save-excursion might also get it wrong -- |
4b398f5d AS |
1021 | ;; in this case, vc-restore-buffer-context gives it a second try. |
1022 | (save-excursion | |
0e362f54 | 1023 | ;; t means don't call normal-mode; |
4b398f5d AS |
1024 | ;; that's to preserve various minor modes. |
1025 | (revert-buffer arg no-confirm t)) | |
c8de1d91 AS |
1026 | (vc-restore-buffer-context context))) |
1027 | ||
594722a8 | 1028 | |
97d3f950 | 1029 | (defun vc-buffer-sync (&optional not-urgent) |
099bd78a | 1030 | "Make sure the current buffer and its working file are in sync. |
0e362f54 | 1031 | NOT-URGENT means it is ok to continue if the user says not to save." |
bbf97570 | 1032 | (if (buffer-modified-p) |
97d3f950 RS |
1033 | (if (or vc-suppress-confirm |
1034 | (y-or-n-p (format "Buffer %s modified; save it? " (buffer-name)))) | |
1035 | (save-buffer) | |
0e362f54 | 1036 | (unless not-urgent |
97d3f950 RS |
1037 | (error "Aborted"))))) |
1038 | ||
2ce63cb7 AS |
1039 | (defun vc-workfile-unchanged-p (file) |
1040 | "Has FILE changed since last checkout?" | |
1041 | (let ((checkout-time (vc-file-getprop file 'vc-checkout-time)) | |
1042 | (lastmod (nth 5 (file-attributes file)))) | |
1043 | (if checkout-time | |
1044 | (equal checkout-time lastmod) | |
1045 | (let ((unchanged (vc-call workfile-unchanged-p file))) | |
1046 | (vc-file-setprop file 'vc-checkout-time (if unchanged lastmod 0)) | |
1047 | unchanged)))) | |
1048 | ||
336203a2 | 1049 | (defun vc-default-workfile-unchanged-p (backend file) |
2ce63cb7 AS |
1050 | "Default check whether FILE is unchanged: diff against master version." |
1051 | (zerop (vc-call diff file (vc-workfile-version file)))) | |
1052 | ||
336203a2 | 1053 | (defun vc-default-latest-on-branch-p (backend file) |
38d88d32 AS |
1054 | "Default check whether the current workfile version of FILE is the |
1055 | latest on its branch." | |
1056 | t) | |
1057 | ||
0e362f54 GM |
1058 | (defun vc-recompute-state (file) |
1059 | "Force a recomputation of the version control state of FILE. | |
1060 | The state is computed using the exact, and possibly expensive | |
1061 | function `vc-BACKEND-state', not the heuristic." | |
1062 | (vc-file-setprop file 'vc-state (vc-call state file))) | |
e1f297e6 | 1063 | |
0e362f54 GM |
1064 | (defun vc-next-action-on-file (file verbose &optional comment) |
1065 | "Do The Right Thing for a given version-controlled FILE. | |
1066 | If COMMENT is specified, it will be used as an admin or checkin comment. | |
1067 | If VERBOSE is non-nil, query the user rather than using default parameters." | |
1068 | (let ((visited (get-file-buffer file)) | |
1069 | state version) | |
1070 | (when visited | |
1071 | ;; Check relation of buffer and file, and make sure | |
1072 | ;; user knows what he's doing. First, finding the file | |
1073 | ;; will check whether the file on disk is newer. | |
1074 | (if vc-dired-mode | |
1075 | (find-file-other-window file) | |
7849e179 | 1076 | (set-buffer (find-file-noselect file))) |
0e362f54 GM |
1077 | (if (not (verify-visited-file-modtime (current-buffer))) |
1078 | (if (yes-or-no-p "Replace file on disk with buffer contents? ") | |
1079 | (write-file (buffer-file-name)) | |
1080 | (error "Aborted")) | |
1081 | ;; Now, check if we have unsaved changes. | |
1082 | (vc-buffer-sync t) | |
1083 | (if (buffer-modified-p) | |
1084 | (or (y-or-n-p "Operate on disk file, keeping modified buffer? ") | |
1085 | (error "Aborted"))))) | |
46e33aee | 1086 | |
0e362f54 | 1087 | ;; Do the right thing |
8989ab56 | 1088 | (if (not (vc-registered file)) |
0e362f54 GM |
1089 | (vc-register verbose comment) |
1090 | (vc-recompute-state file) | |
0ab66291 | 1091 | (if visited (vc-mode-line file)) |
0e362f54 GM |
1092 | (setq state (vc-state file)) |
1093 | (cond | |
1094 | ;; up-to-date | |
1095 | ((or (eq state 'up-to-date) | |
1096 | (and verbose (eq state 'needs-patch))) | |
1097 | (cond | |
1098 | (verbose | |
1099 | ;; go to a different version | |
ceec5a0c | 1100 | (setq version |
1d502d5a | 1101 | (read-string "Branch, version, or backend to move to: ")) |
ceec5a0c | 1102 | (let ((vsym (intern-soft (upcase version)))) |
1d502d5a AS |
1103 | (if (member vsym vc-handled-backends) |
1104 | (vc-transfer-file file vsym) | |
ceec5a0c | 1105 | (vc-checkout file (eq (vc-checkout-model file) 'implicit) |
1d502d5a | 1106 | version)))) |
0e362f54 GM |
1107 | ((not (eq (vc-checkout-model file) 'implicit)) |
1108 | ;; check the file out | |
1109 | (vc-checkout file t)) | |
1110 | (t | |
1111 | ;; do nothing | |
1112 | (message "%s is up-to-date" file)))) | |
46e33aee | 1113 | |
0e362f54 | 1114 | ;; Abnormal: edited but read-only |
fd8092f0 SM |
1115 | ((and visited (eq state 'edited) |
1116 | buffer-read-only (not (file-writable-p file))) | |
0e362f54 GM |
1117 | ;; Make the file+buffer read-write. If the user really wanted to |
1118 | ;; commit, he'll get a chance to do that next time around, anyway. | |
1119 | (message "File is edited but read-only; making it writable") | |
1120 | (set-file-modes buffer-file-name | |
1121 | (logior (file-modes buffer-file-name) 128)) | |
1122 | (toggle-read-only -1)) | |
46e33aee | 1123 | |
0e362f54 GM |
1124 | ;; edited |
1125 | ((eq state 'edited) | |
6f41eeb5 | 1126 | (cond |
0e362f54 GM |
1127 | ;; For files with locking, if the file does not contain |
1128 | ;; any changes, just let go of the lock, i.e. revert. | |
1129 | ((and (not (eq (vc-checkout-model file) 'implicit)) | |
1130 | (vc-workfile-unchanged-p file) | |
1131 | ;; If buffer is modified, that means the user just | |
1132 | ;; said no to saving it; in that case, don't revert, | |
1133 | ;; because the user might intend to save after | |
1134 | ;; finishing the log entry. | |
1135 | (not (and visited (buffer-modified-p)))) | |
1136 | ;; DO NOT revert the file without asking the user! | |
1137 | (if (not visited) (find-file-other-window file)) | |
1138 | (if (yes-or-no-p "Revert to master version? ") | |
1139 | (vc-revert-buffer))) | |
1140 | (t ;; normal action | |
1d502d5a AS |
1141 | (if (not verbose) |
1142 | (vc-checkin file nil comment) | |
1143 | (setq version (read-string "New version or backend: ")) | |
1144 | (let ((vsym (intern (upcase version)))) | |
1145 | (if (member vsym vc-handled-backends) | |
1146 | (vc-transfer-file file vsym) | |
1147 | (vc-checkin file version comment))))))) | |
46e33aee | 1148 | |
0e362f54 GM |
1149 | ;; locked by somebody else |
1150 | ((stringp state) | |
1151 | (if comment | |
1152 | (error "Sorry, you can't steal the lock on %s this way" | |
1153 | (file-name-nondirectory file))) | |
1154 | (vc-steal-lock file | |
1155 | (if verbose (read-string "Version to steal: ") | |
1156 | (vc-workfile-version file)) | |
1157 | state)) | |
46e33aee | 1158 | |
0e362f54 GM |
1159 | ;; needs-patch |
1160 | ((eq state 'needs-patch) | |
6f41eeb5 | 1161 | (if (yes-or-no-p (format |
0e362f54 GM |
1162 | "%s is not up-to-date. Get latest version? " |
1163 | (file-name-nondirectory file))) | |
1164 | (vc-checkout file (eq (vc-checkout-model file) 'implicit) "") | |
1165 | (if (and (not (eq (vc-checkout-model file) 'implicit)) | |
1166 | (yes-or-no-p "Lock this version? ")) | |
1167 | (vc-checkout file t) | |
1168 | (error "Aborted")))) | |
46e33aee | 1169 | |
0e362f54 GM |
1170 | ;; needs-merge |
1171 | ((eq state 'needs-merge) | |
6f41eeb5 | 1172 | (if (yes-or-no-p (format |
0e362f54 GM |
1173 | "%s is not up-to-date. Merge in changes now? " |
1174 | (file-name-nondirectory file))) | |
1175 | (vc-maybe-resolve-conflicts file (vc-call merge-news file)) | |
1176 | (error "Aborted"))) | |
46e33aee | 1177 | |
0e362f54 GM |
1178 | ;; unlocked-changes |
1179 | ((eq state 'unlocked-changes) | |
1180 | (if (not visited) (find-file-other-window file)) | |
1181 | (if (save-window-excursion | |
1182 | (vc-version-diff file (vc-workfile-version file) nil) | |
1183 | (goto-char (point-min)) | |
ceec5a0c SM |
1184 | (let ((inhibit-read-only t)) |
1185 | (insert-string | |
1186 | (format "Changes to %s since last lock:\n\n" file))) | |
0e362f54 GM |
1187 | (not (beep)) |
1188 | (yes-or-no-p (concat "File has unlocked changes. " | |
1189 | "Claim lock retaining changes? "))) | |
1190 | (progn (vc-call steal-lock file) | |
1191 | ;; Must clear any headers here because they wouldn't | |
1192 | ;; show that the file is locked now. | |
1193 | (vc-clear-headers file) | |
1194 | (vc-mode-line file)) | |
1195 | (if (not (yes-or-no-p | |
1196 | "Revert to checked-in version, instead? ")) | |
1197 | (error "Checkout aborted") | |
1198 | (vc-revert-buffer1 t t) | |
1199 | (vc-checkout file t)))))))) | |
e1f297e6 | 1200 | |
beba4bd9 AS |
1201 | (defvar vc-dired-window-configuration) |
1202 | ||
e1f297e6 | 1203 | (defun vc-next-action-dired (file rev comment) |
099bd78a SM |
1204 | "Call `vc-next-action-on-file' on all the marked files. |
1205 | Ignores FILE and REV, but passes on COMMENT." | |
3d30b8bc | 1206 | (let ((dired-buffer (current-buffer)) |
8dd71345 | 1207 | (dired-dir default-directory)) |
632e9525 | 1208 | (dired-map-over-marks |
3b574573 | 1209 | (let ((file (dired-get-filename))) |
b0c9bc8c | 1210 | (message "Processing %s..." file) |
0e362f54 GM |
1211 | (vc-next-action-on-file file nil comment) |
1212 | (set-buffer dired-buffer) | |
3d30b8bc | 1213 | (set-window-configuration vc-dired-window-configuration) |
b0c9bc8c | 1214 | (message "Processing %s...done" file)) |
3d30b8bc RS |
1215 | nil t)) |
1216 | (dired-move-to-filename)) | |
e1f297e6 | 1217 | |
637a8ae9 | 1218 | ;; Here's the major entry point. |
594722a8 | 1219 | |
637a8ae9 | 1220 | ;;;###autoload |
594722a8 ER |
1221 | (defun vc-next-action (verbose) |
1222 | "Do the next logical checkin or checkout operation on the current file. | |
0e362f54 GM |
1223 | |
1224 | If you call this from within a VC dired buffer with no files marked, | |
c6d4f628 | 1225 | it will operate on the file in the current line. |
0e362f54 GM |
1226 | |
1227 | If you call this from within a VC dired buffer, and one or more | |
c6d4f628 RS |
1228 | files are marked, it will accept a log message and then operate on |
1229 | each one. The log message will be used as a comment for any register | |
1230 | or checkin operations, but ignored when doing checkouts. Attempted | |
1231 | lock steals will raise an error. | |
0e362f54 GM |
1232 | |
1233 | A prefix argument lets you specify the version number to use. | |
80688f5c RS |
1234 | |
1235 | For RCS and SCCS files: | |
594722a8 | 1236 | If the file is not already registered, this registers it for version |
4b81132c | 1237 | control. |
594722a8 | 1238 | If the file is registered and not locked by anyone, this checks out |
34291cd2 | 1239 | a writable and locked file ready for editing. |
594722a8 ER |
1240 | If the file is checked out and locked by the calling user, this |
1241 | first checks to see if the file has changed since checkout. If not, | |
1242 | it performs a revert. | |
e1f297e6 ER |
1243 | If the file has been changed, this pops up a buffer for entry |
1244 | of a log message; when the message has been entered, it checks in the | |
594722a8 | 1245 | resulting changes along with the log message as change commentary. If |
34291cd2 | 1246 | the variable `vc-keep-workfiles' is non-nil (which is its default), a |
594722a8 ER |
1247 | read-only copy of the changed file is left in place afterwards. |
1248 | If the file is registered and locked by someone else, you are given | |
e1f297e6 | 1249 | the option to steal the lock. |
80688f5c RS |
1250 | |
1251 | For CVS files: | |
1252 | If the file is not already registered, this registers it for version | |
1253 | control. This does a \"cvs add\", but no \"cvs commit\". | |
1254 | If the file is added but not committed, it is committed. | |
80688f5c RS |
1255 | If your working file is changed, but the repository file is |
1256 | unchanged, this pops up a buffer for entry of a log message; when the | |
1257 | message has been entered, it checks in the resulting changes along | |
1258 | with the logmessage as change commentary. A writable file is retained. | |
1259 | If the repository file is changed, you are asked if you want to | |
c6d4f628 | 1260 | merge in the changes into your working copy." |
bbf97570 | 1261 | |
594722a8 | 1262 | (interactive "P") |
8c0aaf40 ER |
1263 | (catch 'nogo |
1264 | (if vc-dired-mode | |
1265 | (let ((files (dired-get-marked-files))) | |
3d30b8bc RS |
1266 | (set (make-local-variable 'vc-dired-window-configuration) |
1267 | (current-window-configuration)) | |
0e362f54 | 1268 | (if (string= "" |
8dd71345 | 1269 | (mapconcat |
0e362f54 GM |
1270 | (lambda (f) |
1271 | (if (not (vc-up-to-date-p f)) "@" "")) | |
b0c9bc8c AS |
1272 | files "")) |
1273 | (vc-next-action-dired nil nil "dummy") | |
0ab66291 | 1274 | (vc-start-entry nil nil nil nil |
b0c9bc8c AS |
1275 | "Enter a change comment for the marked files." |
1276 | 'vc-next-action-dired)) | |
8dd71345 | 1277 | (throw 'nogo nil))) |
dc08a6b5 AS |
1278 | (while vc-parent-buffer |
1279 | (pop-to-buffer vc-parent-buffer)) | |
1280 | (if buffer-file-name | |
1281 | (vc-next-action-on-file buffer-file-name verbose) | |
1282 | (error "Buffer %s is not associated with a file" (buffer-name))))) | |
594722a8 | 1283 | |
ec402ad4 | 1284 | ;; These functions help the vc-next-action entry point |
594722a8 | 1285 | |
637a8ae9 | 1286 | ;;;###autoload |
0e362f54 | 1287 | (defun vc-register (&optional set-version comment) |
099bd78a | 1288 | "Register the current file into a version control system. |
e1d95cc4 | 1289 | With prefix argument SET-VERSION, allow user to specify initial version |
0e362f54 GM |
1290 | level. If COMMENT is present, use that as an initial comment. |
1291 | ||
e1d95cc4 | 1292 | The version control system to use is found by cycling through the list |
0e362f54 GM |
1293 | `vc-handled-backends'. The first backend in that list which declares |
1294 | itself responsible for the file (usually because other files in that | |
1295 | directory are already registered under that backend) will be used to | |
1296 | register the file. If no backend declares itself responsible, the | |
1297 | first backend that could register the file is used." | |
594722a8 | 1298 | (interactive "P") |
099bd78a | 1299 | (unless buffer-file-name (error "No visited file")) |
0e362f54 GM |
1300 | (when (vc-backend buffer-file-name) |
1301 | (if (vc-registered buffer-file-name) | |
1302 | (error "This file is already registered") | |
1303 | (unless (y-or-n-p "Previous master file has vanished. Make a new one? ") | |
1304 | (error "Aborted")))) | |
02da6253 PE |
1305 | ;; Watch out for new buffers of size 0: the corresponding file |
1306 | ;; does not exist yet, even though buffer-modified-p is nil. | |
1307 | (if (and (not (buffer-modified-p)) | |
1308 | (zerop (buffer-size)) | |
1309 | (not (file-exists-p buffer-file-name))) | |
1310 | (set-buffer-modified-p t)) | |
594722a8 | 1311 | (vc-buffer-sync) |
46e33aee | 1312 | |
0e362f54 GM |
1313 | (vc-start-entry buffer-file-name |
1314 | (if set-version | |
1d502d5a AS |
1315 | (read-string (format "Initial version level for %s: " |
1316 | (buffer-name))) | |
0e362f54 GM |
1317 | ;; TODO: Use backend-specific init version. |
1318 | vc-default-init-version) | |
1319 | (or comment (not vc-initial-comment)) | |
0ab66291 | 1320 | nil |
0e362f54 GM |
1321 | "Enter initial comment." |
1322 | (lambda (file rev comment) | |
1323 | (message "Registering %s... " file) | |
8989ab56 | 1324 | (let ((backend (vc-responsible-backend file t))) |
e1d95cc4 | 1325 | (vc-file-clearprops file) |
0e362f54 GM |
1326 | (vc-call-backend backend 'register file rev comment) |
1327 | (vc-file-setprop file 'vc-backend backend) | |
1328 | (unless vc-make-backup-files | |
1329 | (make-local-variable 'backup-inhibited) | |
1330 | (setq backup-inhibited t))) | |
1331 | (message "Registering %s... done" file)))) | |
1332 | ||
8989ab56 AS |
1333 | |
1334 | (defun vc-responsible-backend (file &optional register) | |
1335 | "Return the name of a backend system that is responsible for FILE. | |
46e33aee | 1336 | The optional argument REGISTER means that a backend suitable for |
8989ab56 AS |
1337 | registration should be found. |
1338 | ||
1339 | If REGISTER is nil, then if FILE is already registered, return the | |
1340 | backend of FILE. If FILE is not registered, or a directory, then the | |
1341 | first backend in `vc-handled-backends' that declares itself | |
1342 | responsible for FILE is returned. If no backend declares itself | |
1343 | responsible, return the first backend. | |
1344 | ||
1345 | If REGISTER is non-nil, return the first responsible backend under | |
1346 | which FILE is not yet registered. If there is no such backend, return | |
1347 | the first backend under which FILE is not yet registered, but could | |
1348 | be registered." | |
1349 | (if (not vc-handled-backends) | |
1350 | (error "No handled backends")) | |
1351 | (or (and (not (file-directory-p file)) (not register) (vc-backend file)) | |
1352 | (catch 'found | |
1353 | ;; First try: find a responsible backend. If this is for registration, | |
1354 | ;; it must be a backend under which FILE is not yet registered. | |
1355 | (dolist (backend vc-handled-backends) | |
1356 | (and (or (not register) | |
1357 | (not (vc-call-backend backend 'registered file))) | |
1358 | (vc-call-backend backend 'responsible-p file) | |
1359 | (throw 'found backend))) | |
1360 | ;; no responsible backend | |
1361 | (if (not register) | |
1362 | ;; if this is not for registration, the first backend must do | |
1363 | (car vc-handled-backends) | |
46e33aee | 1364 | ;; for registration, we need to find a new backend that |
8989ab56 AS |
1365 | ;; could register FILE |
1366 | (dolist (backend vc-handled-backends) | |
1367 | (and (not (vc-call-backend backend 'registered file)) | |
1368 | (vc-call-backend backend 'could-register file) | |
1369 | (throw 'found backend))) | |
1370 | (error "No backend that could register"))))) | |
0e362f54 | 1371 | |
099bd78a | 1372 | (defun vc-default-responsible-p (backend file) |
46e33aee | 1373 | "Indicate whether BACKEND is reponsible for FILE. |
099bd78a SM |
1374 | The default is to return nil always." |
1375 | nil) | |
1376 | ||
0e362f54 | 1377 | (defun vc-default-could-register (backend file) |
6f41eeb5 | 1378 | "Return non-nil if BACKEND could be used to register FILE. |
0e362f54 GM |
1379 | The default implementation returns t for all files." |
1380 | t) | |
594722a8 | 1381 | |
624b4662 | 1382 | (defun vc-resynch-window (file &optional keep noquery) |
099bd78a SM |
1383 | "If FILE is in the current buffer, either revert or unvisit it. |
1384 | The choice between revert (to see expanded keywords) and unvisit depends on | |
1385 | `vc-keep-workfiles'. NOQUERY if non-nil inhibits confirmation for | |
0e362f54 GM |
1386 | reverting. NOQUERY should be t *only* if it is known the only |
1387 | difference between the buffer and the file is due to version control | |
1388 | rather than user editing!" | |
594722a8 ER |
1389 | (and (string= buffer-file-name file) |
1390 | (if keep | |
1391 | (progn | |
1ab31687 | 1392 | (vc-revert-buffer1 t noquery) |
0e362f54 GM |
1393 | ;; TODO: Adjusting view mode might no longer be necessary |
1394 | ;; after RMS change to files.el of 1999-08-08. Investigate | |
1395 | ;; this when we install the new VC. | |
f8791ebe AS |
1396 | (and view-read-only |
1397 | (if (file-writable-p file) | |
1398 | (and view-mode | |
1399 | (let ((view-old-buffer-read-only nil)) | |
1400 | (view-mode-exit))) | |
1401 | (and (not view-mode) | |
1402 | (not (eq (get major-mode 'mode-class) 'special)) | |
1403 | (view-mode-enter)))) | |
594722a8 | 1404 | (vc-mode-line buffer-file-name)) |
88a2ffaf | 1405 | (kill-buffer (current-buffer))))) |
594722a8 | 1406 | |
503b5c85 | 1407 | (defun vc-resynch-buffer (file &optional keep noquery) |
0e362f54 | 1408 | "If FILE is currently visited, resynch its buffer." |
4b398f5d AS |
1409 | (if (string= buffer-file-name file) |
1410 | (vc-resynch-window file keep noquery) | |
1411 | (let ((buffer (get-file-buffer file))) | |
1412 | (if buffer | |
0e362f54 GM |
1413 | (with-current-buffer buffer |
1414 | (vc-resynch-window file keep noquery))))) | |
1415 | (vc-dired-resynch-file file)) | |
503b5c85 | 1416 | |
0ab66291 | 1417 | (defun vc-start-entry (file rev comment initial-contents msg action &optional after-hook) |
46e33aee | 1418 | "Accept a comment for an operation on FILE revision REV. |
6f41eeb5 | 1419 | If COMMENT is nil, pop up a VC-log buffer, emit MSG, and set the |
0ab66291 AS |
1420 | action on close to ACTION. If COMMENT is a string and |
1421 | INITIAL-CONTENTS is non-nil, then COMMENT is used as the initial | |
1422 | contents of the log entry buffer. If COMMENT is a string and | |
1423 | INITIAL-CONTENTS is nil, do action immediately as if the user had | |
1424 | entered COMMENT. If COMMENT is t, also do action immediately with an | |
46e33aee TTN |
1425 | empty comment. Remember the file's buffer in `vc-parent-buffer' |
1426 | \(current one if no file). AFTER-HOOK specifies the local value | |
0ab66291 AS |
1427 | for vc-log-operation-hook." |
1428 | (let ((parent (or (and file (get-file-buffer file)) (current-buffer)))) | |
f0b188ed RS |
1429 | (if vc-before-checkin-hook |
1430 | (if file | |
0e362f54 | 1431 | (with-current-buffer parent |
f0b188ed RS |
1432 | (run-hooks 'vc-before-checkin-hook)) |
1433 | (run-hooks 'vc-before-checkin-hook))) | |
0ab66291 | 1434 | (if (and comment (not initial-contents)) |
e1f297e6 ER |
1435 | (set-buffer (get-buffer-create "*VC-log*")) |
1436 | (pop-to-buffer (get-buffer-create "*VC-log*"))) | |
8c0aaf40 ER |
1437 | (set (make-local-variable 'vc-parent-buffer) parent) |
1438 | (set (make-local-variable 'vc-parent-buffer-name) | |
1439 | (concat " from " (buffer-name vc-parent-buffer))) | |
7e869659 | 1440 | (if file (vc-mode-line file)) |
099bd78a | 1441 | (vc-log-edit file) |
b965445f RS |
1442 | (make-local-variable 'vc-log-after-operation-hook) |
1443 | (if after-hook | |
1444 | (setq vc-log-after-operation-hook after-hook)) | |
e1f297e6 | 1445 | (setq vc-log-operation action) |
e1f297e6 | 1446 | (setq vc-log-version rev) |
347bef30 SM |
1447 | (when comment |
1448 | (erase-buffer) | |
1449 | (when (stringp comment) (insert comment))) | |
1450 | (if (or (not comment) initial-contents) | |
1451 | (message "%s Type C-c C-c when done" msg) | |
1452 | (vc-finish-logentry (eq comment t))))) | |
e1f297e6 | 1453 | |
c6d4f628 | 1454 | (defun vc-checkout (file &optional writable rev) |
099bd78a SM |
1455 | "Retrieve a copy of the revision REV of FILE. |
1456 | If WRITABLE is non-nil, make sure the retrieved file is writable. | |
133a84aa AS |
1457 | REV defaults to the latest revision. |
1458 | ||
1459 | After check-out, runs the normal hook `vc-checkout-hook'." | |
ffda0460 AS |
1460 | (and writable |
1461 | (not rev) | |
10b48cc4 | 1462 | (vc-call make-version-backups-p file) |
ffda0460 | 1463 | (vc-up-to-date-p file) |
10b48cc4 | 1464 | (vc-make-version-backup file)) |
099bd78a SM |
1465 | (with-vc-properties |
1466 | file | |
1467 | (condition-case err | |
1468 | (vc-call checkout file writable rev) | |
1469 | (file-error | |
1470 | ;; Maybe the backend is not installed ;-( | |
1471 | (when writable | |
1472 | (let ((buf (get-file-buffer file))) | |
1473 | (when buf (with-current-buffer buf (toggle-read-only -1))))) | |
1474 | (signal (car err) (cdr err)))) | |
a3255400 SM |
1475 | `((vc-state . ,(if (or (eq (vc-checkout-model file) 'implicit) |
1476 | (not writable)) | |
1477 | (if (vc-call latest-on-branch-p file) | |
1478 | 'up-to-date | |
1479 | 'needs-patch) | |
1480 | 'edited)) | |
1481 | (vc-checkout-time . ,(nth 5 (file-attributes file))))) | |
7cad930d AS |
1482 | (vc-resynch-buffer file t t) |
1483 | (run-hooks 'vc-checkout-hook)) | |
594722a8 | 1484 | |
0e362f54 | 1485 | (defun vc-steal-lock (file rev owner) |
099bd78a | 1486 | "Steal the lock on FILE." |
29fc1ce9 | 1487 | (let (file-description) |
29fc1ce9 RS |
1488 | (if rev |
1489 | (setq file-description (format "%s:%s" file rev)) | |
1490 | (setq file-description file)) | |
4bc504c8 RS |
1491 | (if (not (yes-or-no-p (format "Steal the lock on %s from %s? " |
1492 | file-description owner))) | |
0e362f54 GM |
1493 | (error "Steal canceled")) |
1494 | (compose-mail owner (format "Stolen lock on %s" file-description) | |
1495 | nil nil nil nil | |
1496 | (list (list 'vc-finish-steal file rev))) | |
29fc1ce9 | 1497 | (setq default-directory (expand-file-name "~/")) |
29fc1ce9 RS |
1498 | (goto-char (point-max)) |
1499 | (insert | |
1500 | (format "I stole the lock on %s, " file-description) | |
1501 | (current-time-string) | |
1502 | ".\n") | |
1503 | (message "Please explain why you stole the lock. Type C-c C-c when done."))) | |
594722a8 ER |
1504 | |
1505 | (defun vc-finish-steal (file version) | |
0e362f54 GM |
1506 | ;; This is called when the notification has been sent. |
1507 | (message "Stealing lock on %s..." file) | |
46e33aee | 1508 | (with-vc-properties |
099bd78a SM |
1509 | file |
1510 | (vc-call steal-lock file version) | |
a3255400 | 1511 | `((vc-state . edited))) |
0e362f54 GM |
1512 | (vc-resynch-buffer file t t) |
1513 | (message "Stealing lock on %s...done" file)) | |
594722a8 | 1514 | |
0ab66291 | 1515 | (defun vc-checkin (file &optional rev comment initial-contents) |
6f41eeb5 | 1516 | "Check in FILE. |
0e362f54 GM |
1517 | The optional argument REV may be a string specifying the new version |
1518 | level (if nil increment the current level). COMMENT is a comment | |
0ab66291 AS |
1519 | string; if omitted, a buffer is popped up to accept a comment. If |
1520 | INITIAL-CONTENTS is non-nil, then COMMENT is used as the initial contents | |
1521 | of the log entry buffer. | |
0e362f54 GM |
1522 | |
1523 | If `vc-keep-workfiles' is nil, FILE is deleted afterwards, provided | |
1524 | that the version control system supports this mode of operation. | |
861f3c29 DL |
1525 | |
1526 | Runs the normal hook `vc-checkin-hook'." | |
6f41eeb5 | 1527 | (vc-start-entry |
0ab66291 | 1528 | file rev comment initial-contents |
6f41eeb5 | 1529 | "Enter a change comment." |
0e362f54 GM |
1530 | (lambda (file rev comment) |
1531 | (message "Checking in %s..." file) | |
1532 | ;; "This log message intentionally left almost blank". | |
1533 | ;; RCS 5.7 gripes about white-space-only comments too. | |
1534 | (or (and comment (string-match "[^\t\n ]" comment)) | |
1535 | (setq comment "*** empty log message ***")) | |
46e33aee | 1536 | (with-vc-properties |
099bd78a SM |
1537 | file |
1538 | ;; Change buffers to get local value of vc-checkin-switches. | |
1539 | (with-current-buffer (or (get-file-buffer file) (current-buffer)) | |
ab750f9c | 1540 | (progn |
ffda0460 | 1541 | (vc-call checkin file rev comment) |
ab750f9c | 1542 | (vc-delete-automatic-version-backups file))) |
a3255400 SM |
1543 | `((vc-state . up-to-date) |
1544 | (vc-checkout-time . ,(nth 5 (file-attributes file))) | |
1545 | (vc-workfile-version . nil))) | |
0e362f54 GM |
1546 | (message "Checking in %s...done" file)) |
1547 | 'vc-checkin-hook)) | |
594722a8 | 1548 | |
3b4dd9a9 RM |
1549 | (defun vc-comment-to-change-log (&optional whoami file-name) |
1550 | "Enter last VC comment into change log file for current buffer's file. | |
1551 | Optional arg (interactive prefix) non-nil means prompt for user name and site. | |
1552 | Second arg is file name of change log. \ | |
861f3c29 DL |
1553 | If nil, uses `change-log-default-name'. |
1554 | ||
1555 | May be useful as a `vc-checkin-hook' to update change logs automatically." | |
43cea1ab RM |
1556 | (interactive (if current-prefix-arg |
1557 | (list current-prefix-arg | |
1558 | (prompt-for-change-log-name)))) | |
41208291 KH |
1559 | ;; Make sure the defvar for add-log-current-defun-function has been executed |
1560 | ;; before binding it. | |
1561 | (require 'add-log) | |
3b4dd9a9 RM |
1562 | (let (;; Extract the comment first so we get any error before doing anything. |
1563 | (comment (ring-ref vc-comment-ring 0)) | |
43cea1ab | 1564 | ;; Don't let add-change-log-entry insert a defun name. |
3b4dd9a9 RM |
1565 | (add-log-current-defun-function 'ignore) |
1566 | end) | |
1567 | ;; Call add-log to do half the work. | |
43cea1ab | 1568 | (add-change-log-entry whoami file-name t t) |
3b4dd9a9 RM |
1569 | ;; Insert the VC comment, leaving point before it. |
1570 | (setq end (save-excursion (insert comment) (point-marker))) | |
1571 | (if (looking-at "\\s *\\s(") | |
1572 | ;; It starts with an open-paren, as in "(foo): Frobbed." | |
43cea1ab | 1573 | ;; So remove the ": " add-log inserted. |
3b4dd9a9 RM |
1574 | (delete-char -2)) |
1575 | ;; Canonicalize the white space between the file name and comment. | |
1576 | (just-one-space) | |
1577 | ;; Indent rest of the text the same way add-log indented the first line. | |
1578 | (let ((indentation (current-indentation))) | |
1579 | (save-excursion | |
1580 | (while (< (point) end) | |
1581 | (forward-line 1) | |
1582 | (indent-to indentation)) | |
c124b1b4 | 1583 | (setq end (point)))) |
3b4dd9a9 | 1584 | ;; Fill the inserted text, preserving open-parens at bol. |
6b60c5d1 BG |
1585 | (let ((paragraph-separate (concat paragraph-separate "\\|\\s *\\s(")) |
1586 | (paragraph-start (concat paragraph-start "\\|\\s *\\s("))) | |
43cea1ab | 1587 | (beginning-of-line) |
c124b1b4 RM |
1588 | (fill-region (point) end)) |
1589 | ;; Canonicalize the white space at the end of the entry so it is | |
1590 | ;; separated from the next entry by a single blank line. | |
1591 | (skip-syntax-forward " " end) | |
1592 | (delete-char (- (skip-syntax-backward " "))) | |
1593 | (or (eobp) (looking-at "\n\n") | |
1594 | (insert "\n")))) | |
3b4dd9a9 | 1595 | |
8c0aaf40 | 1596 | (defun vc-finish-logentry (&optional nocomment) |
594722a8 ER |
1597 | "Complete the operation implied by the current log entry." |
1598 | (interactive) | |
8c0aaf40 | 1599 | ;; Check and record the comment, if any. |
0e362f54 GM |
1600 | (unless nocomment |
1601 | ;; Comment too long? | |
1602 | (vc-call-backend (or (and vc-log-file (vc-backend vc-log-file)) | |
1603 | (vc-responsible-backend default-directory)) | |
1604 | 'logentry-check) | |
1605 | (run-hooks 'vc-logentry-check-hook) | |
1606 | ;; Record the comment in the comment ring | |
1607 | (let ((comment (buffer-string))) | |
1608 | (unless (and (ring-p vc-comment-ring) | |
1609 | (not (ring-empty-p vc-comment-ring)) | |
1610 | (equal comment (ring-ref vc-comment-ring 0))) | |
1611 | (ring-insert vc-comment-ring comment)))) | |
b2396d1f | 1612 | ;; Sync parent buffer in case the user modified it while editing the comment. |
cdaf7a1a | 1613 | ;; But not if it is a vc-dired buffer. |
0e362f54 GM |
1614 | (with-current-buffer vc-parent-buffer |
1615 | (or vc-dired-mode (vc-buffer-sync))) | |
61dee1e7 AS |
1616 | (if (not vc-log-operation) (error "No log operation is pending")) |
1617 | ;; save the parameters held in buffer-local variables | |
1618 | (let ((log-operation vc-log-operation) | |
1619 | (log-file vc-log-file) | |
1620 | (log-version vc-log-version) | |
1621 | (log-entry (buffer-string)) | |
2c4eea90 KH |
1622 | (after-hook vc-log-after-operation-hook) |
1623 | (tmp-vc-parent-buffer vc-parent-buffer)) | |
e2bef5c3 | 1624 | (pop-to-buffer vc-parent-buffer) |
61dee1e7 AS |
1625 | ;; OK, do it to it |
1626 | (save-excursion | |
0e362f54 | 1627 | (funcall log-operation |
61dee1e7 AS |
1628 | log-file |
1629 | log-version | |
1630 | log-entry)) | |
df1e7b91 KH |
1631 | ;; Remove checkin window (after the checkin so that if that fails |
1632 | ;; we don't zap the *VC-log* buffer and the typing therein). | |
1633 | (let ((logbuf (get-buffer "*VC-log*"))) | |
2c4eea90 KH |
1634 | (cond ((and logbuf vc-delete-logbuf-window) |
1635 | (delete-windows-on logbuf (selected-frame)) | |
262c8cea | 1636 | ;; Kill buffer and delete any other dedicated windows/frames. |
2c4eea90 | 1637 | (kill-buffer logbuf)) |
0ab66291 AS |
1638 | (logbuf (pop-to-buffer "*VC-log*") |
1639 | (bury-buffer) | |
1640 | (pop-to-buffer tmp-vc-parent-buffer)))) | |
e2bef5c3 | 1641 | ;; Now make sure we see the expanded headers |
46e33aee | 1642 | (if log-file |
0ab66291 | 1643 | (vc-resynch-buffer log-file vc-keep-workfiles t)) |
0e362f54 | 1644 | (if vc-dired-mode |
0ab66291 | 1645 | (dired-move-to-filename)) |
37667a5c | 1646 | (run-hooks after-hook 'vc-finish-logentry-hook))) |
594722a8 ER |
1647 | |
1648 | ;; Code for access to the comment ring | |
1649 | ||
0e362f54 GM |
1650 | (defun vc-new-comment-index (stride len) |
1651 | (mod (cond | |
1652 | (vc-comment-ring-index (+ vc-comment-ring-index stride)) | |
1653 | ;; Initialize the index on the first use of this command | |
1654 | ;; so that the first M-p gets index 0, and the first M-n gets | |
1655 | ;; index -1. | |
1656 | ((> stride 0) (1- stride)) | |
1657 | (t stride)) | |
1658 | len)) | |
1659 | ||
8c0aaf40 ER |
1660 | (defun vc-previous-comment (arg) |
1661 | "Cycle backwards through comment history." | |
1662 | (interactive "*p") | |
1663 | (let ((len (ring-length vc-comment-ring))) | |
0e362f54 GM |
1664 | (if (<= len 0) |
1665 | (progn (message "Empty comment ring") (ding)) | |
1666 | (erase-buffer) | |
1667 | (setq vc-comment-ring-index (vc-new-comment-index arg len)) | |
1668 | (message "Comment %d" (1+ vc-comment-ring-index)) | |
1669 | (insert (ring-ref vc-comment-ring vc-comment-ring-index))))) | |
8c0aaf40 ER |
1670 | |
1671 | (defun vc-next-comment (arg) | |
1672 | "Cycle forwards through comment history." | |
1673 | (interactive "*p") | |
1674 | (vc-previous-comment (- arg))) | |
1675 | ||
0e362f54 | 1676 | (defun vc-comment-search-reverse (str &optional stride) |
a3255400 | 1677 | "Search backwards through comment history for substring match." |
0e362f54 GM |
1678 | ;; Why substring rather than regexp ? -sm |
1679 | (interactive | |
1680 | (list (read-string "Comment substring: " nil nil vc-last-comment-match))) | |
1681 | (unless stride (setq stride 1)) | |
8c0aaf40 ER |
1682 | (if (string= str "") |
1683 | (setq str vc-last-comment-match) | |
1684 | (setq vc-last-comment-match str)) | |
0e362f54 GM |
1685 | (let* ((str (regexp-quote str)) |
1686 | (len (ring-length vc-comment-ring)) | |
1687 | (n (vc-new-comment-index stride len))) | |
1688 | (while (progn (when (or (>= n len) (< n 0)) (error "Not found")) | |
1689 | (not (string-match str (ring-ref vc-comment-ring n)))) | |
1690 | (setq n (+ n stride))) | |
1691 | (setq vc-comment-ring-index n) | |
1692 | (vc-previous-comment 0))) | |
8c0aaf40 ER |
1693 | |
1694 | (defun vc-comment-search-forward (str) | |
a3255400 | 1695 | "Search forwards through comment history for substring match." |
0e362f54 GM |
1696 | (interactive |
1697 | (list (read-string "Comment substring: " nil nil vc-last-comment-match))) | |
1698 | (vc-comment-search-reverse str -1)) | |
594722a8 ER |
1699 | |
1700 | ;; Additional entry points for examining version histories | |
1701 | ||
637a8ae9 | 1702 | ;;;###autoload |
97d3f950 | 1703 | (defun vc-diff (historic &optional not-urgent) |
e8ee1ccf | 1704 | "Display diffs between file versions. |
0e362f54 | 1705 | Normally this compares the current file and buffer with the most recent |
e8ee1ccf RS |
1706 | checked in version of that file. This uses no arguments. |
1707 | With a prefix argument, it reads the file name to use | |
1708 | and two version designators specifying which versions to compare." | |
48078f8f | 1709 | (interactive (list current-prefix-arg t)) |
594722a8 ER |
1710 | (if historic |
1711 | (call-interactively 'vc-version-diff) | |
2c87edc1 | 1712 | (vc-ensure-vc-buffer) |
0e362f54 | 1713 | (let ((file buffer-file-name)) |
c0d66cb2 | 1714 | (vc-buffer-sync not-urgent) |
0e362f54 GM |
1715 | (if (vc-workfile-unchanged-p buffer-file-name) |
1716 | (message "No changes to %s since latest version" file) | |
1717 | (vc-version-diff file nil nil))))) | |
594722a8 ER |
1718 | |
1719 | (defun vc-version-diff (file rel1 rel2) | |
1720 | "For FILE, report diffs between two stored versions REL1 and REL2 of it. | |
1721 | If FILE is a directory, generate diffs between versions for all registered | |
1722 | files in or below it." | |
0e362f54 | 1723 | (interactive |
4e6473c8 GM |
1724 | (let ((file (expand-file-name |
1725 | (read-file-name (if buffer-file-name | |
1726 | "File or dir to diff: (default visited file) " | |
1727 | "File or dir to diff: ") | |
1728 | default-directory buffer-file-name t))) | |
c0d66cb2 RS |
1729 | (rel1-default nil) (rel2-default nil)) |
1730 | ;; compute default versions based on the file state | |
1731 | (cond | |
0e362f54 GM |
1732 | ;; if it's a directory, don't supply any version default |
1733 | ((file-directory-p file) | |
c0d66cb2 | 1734 | nil) |
0e362f54 GM |
1735 | ;; if the file is not up-to-date, use current version as older version |
1736 | ((not (vc-up-to-date-p file)) | |
c0d66cb2 RS |
1737 | (setq rel1-default (vc-workfile-version file))) |
1738 | ;; if the file is not locked, use last and previous version as default | |
1739 | (t | |
1740 | (setq rel1-default (vc-previous-version (vc-workfile-version file))) | |
0e362f54 | 1741 | (if (string= rel1-default "") (setq rel1-default nil)) |
c0d66cb2 RS |
1742 | (setq rel2-default (vc-workfile-version file)))) |
1743 | ;; construct argument list | |
0e362f54 | 1744 | (list file |
8e710301 RS |
1745 | (read-string (if rel1-default |
1746 | (concat "Older version: (default " | |
1747 | rel1-default ") ") | |
1748 | "Older version: ") | |
1749 | nil nil rel1-default) | |
1750 | (read-string (if rel2-default | |
1751 | (concat "Newer version: (default " | |
1752 | rel2-default ") ") | |
ba27415c | 1753 | "Newer version (default: current source): ") |
8e710301 | 1754 | nil nil rel2-default)))) |
594722a8 | 1755 | (if (file-directory-p file) |
ffda0460 | 1756 | ;; recursive directory diff |
ad339989 AS |
1757 | (progn |
1758 | (vc-setup-buffer "*vc-diff*") | |
ffda0460 AS |
1759 | (if (string-equal rel1 "") (setq rel1 nil)) |
1760 | (if (string-equal rel2 "") (setq rel2 nil)) | |
ad339989 AS |
1761 | (let ((inhibit-read-only t)) |
1762 | (insert "Diffs between " | |
1763 | (or rel1 "last version checked in") | |
1764 | " and " | |
1765 | (or rel2 "current workfile(s)") | |
1766 | ":\n\n")) | |
2c87edc1 AS |
1767 | (let ((dir (file-name-as-directory file))) |
1768 | (vc-call-backend (vc-responsible-backend dir) | |
1769 | 'diff-tree dir rel1 rel2)) | |
0e362f54 GM |
1770 | (vc-exec-after `(let ((inhibit-read-only t)) |
1771 | (insert "\nEnd of diffs.\n")))) | |
ffda0460 | 1772 | ;; single file diff |
2c87edc1 | 1773 | (vc-diff-internal file rel1 rel2)) |
ad339989 | 1774 | (set-buffer "*vc-diff*") |
0e362f54 GM |
1775 | (if (and (zerop (buffer-size)) |
1776 | (not (get-buffer-process (current-buffer)))) | |
1777 | (progn | |
1778 | (if rel1 | |
1779 | (if rel2 | |
1780 | (message "No changes to %s between %s and %s" file rel1 rel2) | |
1781 | (message "No changes to %s since %s" file rel1)) | |
1782 | (message "No changes to %s since latest version" file)) | |
1783 | nil) | |
1784 | (pop-to-buffer (current-buffer)) | |
1785 | ;; Gnus-5.8.5 sets up an autoload for diff-mode, even if it's | |
1786 | ;; not available. Work around that. | |
1787 | (if (require 'diff-mode nil t) (diff-mode)) | |
66321b2f SM |
1788 | (vc-exec-after '(let ((inhibit-read-only t)) |
1789 | (if (eq (buffer-size) 0) | |
1790 | (insert "No differences found.\n")) | |
1791 | (goto-char (point-min)) | |
1792 | (shrink-window-if-larger-than-buffer))) | |
0e362f54 | 1793 | t)) |
594722a8 | 1794 | |
2c87edc1 AS |
1795 | (defun vc-diff-internal (file rel1 rel2) |
1796 | "Run diff to compare FILE's revisions REL1 and REL2. | |
1797 | Output goes to the current buffer, which is assumed properly set up. | |
1798 | The exit status of the diff command is returned. | |
1799 | ||
1800 | This function takes care to set up a proper coding system for diff output. | |
1801 | If both revisions are available as local files, then it also does not | |
1802 | actually call the backend, but performs a local diff." | |
1803 | (if (or (not rel1) (string-equal rel1 "")) | |
1804 | (setq rel1 (vc-workfile-version file))) | |
1805 | (if (string-equal rel2 "") | |
1806 | (setq rel2 nil)) | |
1807 | (let ((file-rel1 (vc-version-backup-file file rel1)) | |
1808 | (file-rel2 (if (not rel2) | |
1809 | file | |
1810 | (vc-version-backup-file file rel2))) | |
1811 | (coding-system-for-read (vc-coding-system-for-diff file))) | |
1812 | (if (and file-rel1 file-rel2) | |
1813 | (apply 'vc-do-command "*vc-diff*" 1 "diff" nil | |
1814 | (append (if (listp diff-switches) | |
1815 | diff-switches | |
1816 | (list diff-switches)) | |
1817 | (if (listp vc-diff-switches) | |
1818 | vc-diff-switches | |
1819 | (list vc-diff-switches)) | |
1820 | (list (file-relative-name file-rel1) | |
1821 | (file-relative-name file-rel2)))) | |
1822 | (vc-call diff file rel1 rel2)))) | |
1823 | ||
acc5b122 AS |
1824 | (defmacro vc-diff-switches-list (backend) |
1825 | "Make a list of `diff-switches', `vc-diff-switches', | |
1826 | and `vc-BACKEND-diff-switches'." | |
1827 | `(append | |
1828 | (if (listp diff-switches) diff-switches (list diff-switches)) | |
1829 | (if (listp vc-diff-switches) vc-diff-switches (list vc-diff-switches)) | |
1830 | (let ((backend-switches | |
1831 | (eval (intern (concat "vc-" (symbol-name ',backend) | |
1832 | "-diff-switches"))))) | |
1833 | (if (listp backend-switches) backend-switches (list backend-switches))))) | |
1834 | ||
2c87edc1 AS |
1835 | (defun vc-default-diff-tree (backend dir rel1 rel2) |
1836 | "Default implementation for diffing an entire tree at and below DIR. | |
1837 | The meaning of REL1 and REL2 is the same as for `vc-version-diff'." | |
1838 | ;; This implementation does an explicit tree walk, and calls | |
1839 | ;; vc-BACKEND-diff directly for each file. An optimization | |
1840 | ;; would be to use `vc-diff-internal', so that diffs can be local, | |
1841 | ;; and to call it only for files that are actually changed. | |
1842 | ;; However, this is expensive for some backends, and so it is left | |
1843 | ;; to backend-specific implementations. | |
1844 | (setq default-directory dir) | |
1845 | (vc-file-tree-walk | |
1846 | default-directory | |
1847 | (lambda (f) | |
1848 | (vc-exec-after | |
1849 | `(let ((coding-system-for-read (vc-coding-system-for-diff ',f))) | |
1850 | (message "Looking at %s" ',f) | |
1851 | (vc-call-backend ',(vc-backend f) | |
1852 | 'diff ',f ',rel1 ',rel2)))))) | |
1853 | ||
1854 | (defun vc-coding-system-for-diff (file) | |
1855 | "Return the coding system for reading diff output for FILE." | |
1856 | (or coding-system-for-read | |
1857 | ;; if we already have this file open, | |
1858 | ;; use the buffer's coding system | |
1859 | (let ((buf (find-buffer-visiting file))) | |
1860 | (if buf (with-current-buffer buf | |
1861 | buffer-file-coding-system))) | |
1862 | ;; otherwise, try to find one based on the file name | |
1863 | (car (find-operation-coding-system 'insert-file-contents | |
1864 | file)) | |
1865 | ;; and a final fallback | |
1866 | 'undecided)) | |
1867 | ||
f1818994 PE |
1868 | ;;;###autoload |
1869 | (defun vc-version-other-window (rev) | |
1870 | "Visit version REV of the current buffer in another window. | |
1871 | If the current buffer is named `F', the version is named `F.~REV~'. | |
1872 | If `F.~REV~' already exists, it is used instead of being re-created." | |
0e362f54 | 1873 | (interactive "sVersion to visit (default is workfile version): ") |
b6909007 | 1874 | (vc-ensure-vc-buffer) |
5e011cb2 SM |
1875 | (let* ((file buffer-file-name) |
1876 | (version (if (string-equal rev "") | |
1877 | (vc-workfile-version file) | |
b6909007 | 1878 | rev)) |
10b48cc4 AS |
1879 | (automatic-backup (vc-version-backup-file-name file version)) |
1880 | (manual-backup (vc-version-backup-file-name file version 'manual))) | |
1881 | (unless (file-exists-p manual-backup) | |
1882 | (if (file-exists-p automatic-backup) | |
f9b59b2b | 1883 | (rename-file automatic-backup manual-backup nil) |
5e011cb2 | 1884 | (vc-call checkout file nil version manual-backup))) |
10b48cc4 | 1885 | (find-file-other-window manual-backup))) |
f1818994 | 1886 | |
594722a8 ER |
1887 | ;; Header-insertion code |
1888 | ||
637a8ae9 | 1889 | ;;;###autoload |
594722a8 | 1890 | (defun vc-insert-headers () |
099bd78a | 1891 | "Insert headers in a file for use with your version control system. |
b524ce9f | 1892 | Headers desired are inserted at point, and are pulled from |
0e362f54 | 1893 | the variable `vc-BACKEND-header'." |
594722a8 | 1894 | (interactive) |
b6909007 | 1895 | (vc-ensure-vc-buffer) |
594722a8 ER |
1896 | (save-excursion |
1897 | (save-restriction | |
1898 | (widen) | |
1899 | (if (or (not (vc-check-headers)) | |
820bde8d | 1900 | (y-or-n-p "Version headers already exist. Insert another set? ")) |
594722a8 ER |
1901 | (progn |
1902 | (let* ((delims (cdr (assq major-mode vc-comment-alist))) | |
1903 | (comment-start-vc (or (car delims) comment-start "#")) | |
1904 | (comment-end-vc (or (car (cdr delims)) comment-end "")) | |
0e362f54 GM |
1905 | (hdsym (vc-make-backend-sym (vc-backend (buffer-file-name)) |
1906 | 'header)) | |
1907 | (hdstrings (and (boundp hdsym) (symbol-value hdsym)))) | |
1908 | (mapcar (lambda (s) | |
1909 | (insert comment-start-vc "\t" s "\t" | |
1910 | comment-end-vc "\n")) | |
594722a8 ER |
1911 | hdstrings) |
1912 | (if vc-static-header-alist | |
0e362f54 GM |
1913 | (mapcar (lambda (f) |
1914 | (if (string-match (car f) buffer-file-name) | |
1915 | (insert (format (cdr f) (car hdstrings))))) | |
594722a8 ER |
1916 | vc-static-header-alist)) |
1917 | ) | |
1918 | ))))) | |
1919 | ||
0e362f54 | 1920 | (defun vc-clear-headers (&optional file) |
099bd78a SM |
1921 | "Clear all version headers in the current buffer (or FILE). |
1922 | I.e. reset them to the non-expanded form." | |
0e362f54 GM |
1923 | (let* ((filename (or file buffer-file-name)) |
1924 | (visited (find-buffer-visiting filename)) | |
1925 | (backend (vc-backend filename))) | |
1926 | (when (vc-find-backend-function backend 'clear-headers) | |
6f41eeb5 | 1927 | (if visited |
0e362f54 GM |
1928 | (let ((context (vc-buffer-context))) |
1929 | ;; save-excursion may be able to relocate point and mark | |
1930 | ;; properly. If it fails, vc-restore-buffer-context | |
1931 | ;; will give it a second try. | |
1932 | (save-excursion | |
1933 | (vc-call-backend backend 'clear-headers)) | |
1934 | (vc-restore-buffer-context context)) | |
7849e179 | 1935 | (set-buffer (find-file-noselect filename)) |
0e362f54 GM |
1936 | (vc-call-backend backend 'clear-headers) |
1937 | (kill-buffer filename))))) | |
c8de1d91 | 1938 | |
b6909007 | 1939 | ;;;###autoload |
099bd78a SM |
1940 | (defun vc-merge () |
1941 | "Merge changes between two versions into the current buffer's file. | |
1942 | This asks for two versions to merge from in the minibuffer. If the | |
1943 | first version is a branch number, then merge all changes from that | |
1944 | branch. If the first version is empty, merge news, i.e. recent changes | |
1945 | from the current branch. | |
0e362f54 GM |
1946 | |
1947 | See Info node `Merging'." | |
099bd78a | 1948 | (interactive) |
ccb141e8 AS |
1949 | (vc-ensure-vc-buffer) |
1950 | (vc-buffer-sync) | |
1951 | (let* ((file buffer-file-name) | |
1952 | (backend (vc-backend file)) | |
0e362f54 | 1953 | (state (vc-state file)) |
099bd78a | 1954 | first-version second-version status) |
0e362f54 | 1955 | (cond |
0e362f54 GM |
1956 | ((stringp state) |
1957 | (error "File is locked by %s" state)) | |
1958 | ((not (vc-editable-p file)) | |
1959 | (if (y-or-n-p | |
1960 | "File must be checked out for merging. Check out now? ") | |
1961 | (vc-checkout file t) | |
1962 | (error "Merge aborted")))) | |
46e33aee | 1963 | (setq first-version |
099bd78a SM |
1964 | (read-string (concat "Branch or version to merge from " |
1965 | "(default: news on current branch): "))) | |
1966 | (if (string= first-version "") | |
1967 | (if (not (vc-find-backend-function backend 'merge-news)) | |
1968 | (error "Sorry, merging news is not implemented for %s" backend) | |
1969 | (setq status (vc-call merge-news file))) | |
1970 | (if (not (vc-find-backend-function backend 'merge)) | |
1971 | (error "Sorry, merging is not implemented for %s" backend) | |
1972 | (if (not (vc-branch-p first-version)) | |
46e33aee TTN |
1973 | (setq second-version |
1974 | (read-string "Second version: " | |
099bd78a SM |
1975 | (concat (vc-branch-part first-version) "."))) |
1976 | ;; We want to merge an entire branch. Set versions | |
1977 | ;; accordingly, so that vc-BACKEND-merge understands us. | |
1978 | (setq second-version first-version) | |
1979 | ;; first-version must be the starting point of the branch | |
1980 | (setq first-version (vc-branch-part first-version))) | |
1981 | (setq status (vc-call merge file first-version second-version)))) | |
1982 | (vc-maybe-resolve-conflicts file status "WORKFILE" "MERGE SOURCE"))) | |
0e362f54 GM |
1983 | |
1984 | (defun vc-maybe-resolve-conflicts (file status &optional name-A name-B) | |
1985 | (vc-resynch-buffer file t (not (buffer-modified-p))) | |
1986 | (if (zerop status) (message "Merge successful") | |
1987 | (if (fboundp 'smerge-mode) (smerge-mode 1)) | |
1988 | (if (y-or-n-p "Conflicts detected. Resolve them now? ") | |
1989 | (if (fboundp 'smerge-ediff) | |
1990 | (smerge-ediff) | |
1991 | (vc-resolve-conflicts name-A name-B)) | |
1992 | (message "File contains conflict markers")))) | |
ccb141e8 | 1993 | |
beba4bd9 AS |
1994 | (defvar vc-ediff-windows) |
1995 | (defvar vc-ediff-result) | |
0e362f54 GM |
1996 | (eval-when-compile |
1997 | (defvar ediff-buffer-A) | |
1998 | (defvar ediff-buffer-B) | |
1999 | (defvar ediff-buffer-C) | |
2000 | (require 'ediff-util)) | |
ccb141e8 AS |
2001 | ;;;###autoload |
2002 | (defun vc-resolve-conflicts (&optional name-A name-B) | |
18483cf0 AS |
2003 | "Invoke ediff to resolve conflicts in the current buffer. |
2004 | The conflicts must be marked with rcsmerge conflict markers." | |
2005 | (interactive) | |
b6909007 | 2006 | (vc-ensure-vc-buffer) |
18483cf0 AS |
2007 | (let* ((found nil) |
2008 | (file-name (file-name-nondirectory buffer-file-name)) | |
0e362f54 GM |
2009 | (your-buffer (generate-new-buffer |
2010 | (concat "*" file-name | |
ccb141e8 | 2011 | " " (or name-A "WORKFILE") "*"))) |
0e362f54 GM |
2012 | (other-buffer (generate-new-buffer |
2013 | (concat "*" file-name | |
ccb141e8 | 2014 | " " (or name-B "CHECKED-IN") "*"))) |
18483cf0 | 2015 | (result-buffer (current-buffer))) |
0e362f54 | 2016 | (save-excursion |
18483cf0 AS |
2017 | (set-buffer your-buffer) |
2018 | (erase-buffer) | |
2019 | (insert-buffer result-buffer) | |
2020 | (goto-char (point-min)) | |
0e362f54 | 2021 | (while (re-search-forward (concat "^<<<<<<< " |
18483cf0 AS |
2022 | (regexp-quote file-name) "\n") nil t) |
2023 | (setq found t) | |
2024 | (replace-match "") | |
2025 | (if (not (re-search-forward "^=======\n" nil t)) | |
2026 | (error "Malformed conflict marker")) | |
2027 | (replace-match "") | |
2028 | (let ((start (point))) | |
2029 | (if (not (re-search-forward "^>>>>>>> [0-9.]+\n" nil t)) | |
2030 | (error "Malformed conflict marker")) | |
2031 | (delete-region start (point)))) | |
2032 | (if (not found) | |
2033 | (progn | |
2034 | (kill-buffer your-buffer) | |
2035 | (kill-buffer other-buffer) | |
2036 | (error "No conflict markers found"))) | |
2037 | (set-buffer other-buffer) | |
2038 | (erase-buffer) | |
2039 | (insert-buffer result-buffer) | |
2040 | (goto-char (point-min)) | |
0e362f54 | 2041 | (while (re-search-forward (concat "^<<<<<<< " |
18483cf0 AS |
2042 | (regexp-quote file-name) "\n") nil t) |
2043 | (let ((start (match-beginning 0))) | |
2044 | (if (not (re-search-forward "^=======\n" nil t)) | |
2045 | (error "Malformed conflict marker")) | |
2046 | (delete-region start (point)) | |
2047 | (if (not (re-search-forward "^>>>>>>> [0-9.]+\n" nil t)) | |
2048 | (error "Malformed conflict marker")) | |
2049 | (replace-match ""))) | |
2050 | (let ((config (current-window-configuration)) | |
2051 | (ediff-default-variant 'default-B)) | |
2052 | ||
2053 | ;; Fire up ediff. | |
2054 | ||
2055 | (set-buffer (ediff-merge-buffers your-buffer other-buffer)) | |
2056 | ||
2057 | ;; Ediff is now set up, and we are in the control buffer. | |
2058 | ;; Do a few further adjustments and take precautions for exit. | |
2059 | ||
2060 | (make-local-variable 'vc-ediff-windows) | |
2061 | (setq vc-ediff-windows config) | |
2062 | (make-local-variable 'vc-ediff-result) | |
0e362f54 | 2063 | (setq vc-ediff-result result-buffer) |
18483cf0 | 2064 | (make-local-variable 'ediff-quit-hook) |
6f41eeb5 | 2065 | (setq ediff-quit-hook |
0e362f54 GM |
2066 | (lambda () |
2067 | (let ((buffer-A ediff-buffer-A) | |
2068 | (buffer-B ediff-buffer-B) | |
2069 | (buffer-C ediff-buffer-C) | |
2070 | (result vc-ediff-result) | |
2071 | (windows vc-ediff-windows)) | |
2072 | (ediff-cleanup-mess) | |
2073 | (set-buffer result) | |
2074 | (erase-buffer) | |
2075 | (insert-buffer buffer-C) | |
2076 | (kill-buffer buffer-A) | |
2077 | (kill-buffer buffer-B) | |
2078 | (kill-buffer buffer-C) | |
2079 | (set-window-configuration windows) | |
2080 | (message "Conflict resolution finished; you may save the buffer")))) | |
18483cf0 AS |
2081 | (message "Please resolve conflicts now; exit ediff when done") |
2082 | nil)))) | |
2083 | ||
2f119435 | 2084 | ;; The VC directory major mode. Coopt Dired for this. |
e1f297e6 ER |
2085 | ;; All VC commands get mapped into logical equivalents. |
2086 | ||
beba4bd9 AS |
2087 | (defvar vc-dired-switches) |
2088 | (defvar vc-dired-terse-mode) | |
2089 | ||
0e362f54 GM |
2090 | (defvar vc-dired-mode-map |
2091 | (let ((map (make-sparse-keymap)) | |
2092 | (vmap (make-sparse-keymap))) | |
ec402ad4 | 2093 | (define-key map "\C-xv" vmap) |
0e362f54 | 2094 | (define-key map "v" vmap) |
ec402ad4 | 2095 | (set-keymap-parent vmap vc-prefix-map) |
0e362f54 GM |
2096 | (define-key vmap "t" 'vc-dired-toggle-terse-mode) |
2097 | map)) | |
2098 | ||
2f119435 | 2099 | (define-derived-mode vc-dired-mode dired-mode "Dired under VC" |
0e362f54 GM |
2100 | "The major mode used in VC directory buffers. |
2101 | ||
2102 | It works like Dired, but lists only files under version control, with | |
2103 | the current VC state of each file being indicated in the place of the | |
2104 | file's link count, owner, group and size. Subdirectories are also | |
2105 | listed, and you may insert them into the buffer as desired, like in | |
2106 | Dired. | |
2107 | ||
2108 | All Dired commands operate normally, with the exception of `v', which | |
2109 | is redefined as the version control prefix, so that you can type | |
3d30b8bc RS |
2110 | `vl', `v=' etc. to invoke `vc-print-log', `vc-diff', and the like on |
2111 | the file named in the current Dired buffer line. `vv' invokes | |
2112 | `vc-next-action' on this file, or on all files currently marked. | |
2113 | There is a special command, `*l', to mark all files currently locked." | |
099bd78a SM |
2114 | ;; define-derived-mode does it for us in Emacs-21, but not in Emacs-20. |
2115 | ;; We do it here because dired might not be loaded yet | |
2116 | ;; when vc-dired-mode-map is initialized. | |
2117 | (set-keymap-parent vc-dired-mode-map dired-mode-map) | |
421f0bfe AS |
2118 | (make-local-hook 'dired-after-readin-hook) |
2119 | (add-hook 'dired-after-readin-hook 'vc-dired-hook nil t) | |
edcb979f AS |
2120 | ;; The following is slightly modified from dired.el, |
2121 | ;; because file lines look a bit different in vc-dired-mode. | |
2122 | (set (make-local-variable 'dired-move-to-filename-regexp) | |
0e362f54 | 2123 | (let* |
edcb979f AS |
2124 | ((l "\\([A-Za-z]\\|[^\0-\177]\\)") |
2125 | ;; In some locales, month abbreviations are as short as 2 letters, | |
2126 | ;; and they can be padded on the right with spaces. | |
2127 | (month (concat l l "+ *")) | |
0e362f54 | 2128 | ;; Recognize any non-ASCII character. |
edcb979f AS |
2129 | ;; The purpose is to match a Kanji character. |
2130 | (k "[^\0-\177]") | |
2131 | ;; (k "[^\x00-\x7f\x80-\xff]") | |
2132 | (s " ") | |
2133 | (yyyy "[0-9][0-9][0-9][0-9]") | |
2134 | (mm "[ 0-1][0-9]") | |
2135 | (dd "[ 0-3][0-9]") | |
2136 | (HH:MM "[ 0-2][0-9]:[0-5][0-9]") | |
2137 | (western (concat "\\(" month s dd "\\|" dd s month "\\)" | |
61d6c25d | 2138 | s "\\(" HH:MM "\\|" s yyyy"\\|" yyyy s "\\)")) |
edcb979f | 2139 | (japanese (concat mm k s dd k s "\\(" s HH:MM "\\|" yyyy k "\\)"))) |
0e362f54 GM |
2140 | ;; the .* below ensures that we find the last match on a line |
2141 | (concat ".*" s "\\(" western "\\|" japanese "\\)" s))) | |
a0019b45 AS |
2142 | (and (boundp 'vc-dired-switches) |
2143 | vc-dired-switches | |
2144 | (set (make-local-variable 'dired-actual-switches) | |
2145 | vc-dired-switches)) | |
3b574573 | 2146 | (set (make-local-variable 'vc-dired-terse-mode) vc-dired-terse-display) |
2f119435 AS |
2147 | (setq vc-dired-mode t)) |
2148 | ||
3b574573 AS |
2149 | (defun vc-dired-toggle-terse-mode () |
2150 | "Toggle terse display in VC Dired." | |
2151 | (interactive) | |
2152 | (if (not vc-dired-mode) | |
2153 | nil | |
2154 | (setq vc-dired-terse-mode (not vc-dired-terse-mode)) | |
2155 | (if vc-dired-terse-mode | |
2156 | (vc-dired-hook) | |
2157 | (revert-buffer)))) | |
2158 | ||
3d30b8bc RS |
2159 | (defun vc-dired-mark-locked () |
2160 | "Mark all files currently locked." | |
2161 | (interactive) | |
2162 | (dired-mark-if (let ((f (dired-get-filename nil t))) | |
2163 | (and f | |
2164 | (not (file-directory-p f)) | |
0e362f54 | 2165 | (not (vc-up-to-date-p f)))) |
3d30b8bc RS |
2166 | "locked file")) |
2167 | ||
2168 | (define-key vc-dired-mode-map "*l" 'vc-dired-mark-locked) | |
2169 | ||
0e362f54 GM |
2170 | (defun vc-default-dired-state-info (backend file) |
2171 | (let ((state (vc-state file))) | |
2172 | (cond | |
2173 | ((stringp state) (concat "(" state ")")) | |
2174 | ((eq state 'edited) (concat "(" (vc-user-login-name) ")")) | |
2175 | ((eq state 'needs-merge) "(merge)") | |
2176 | ((eq state 'needs-patch) "(patch)") | |
2177 | ((eq state 'unlocked-changes) "(stale)")))) | |
b0c9bc8c | 2178 | |
8c0aaf40 | 2179 | (defun vc-dired-reformat-line (x) |
0e362f54 GM |
2180 | "Reformat a directory-listing line. |
2181 | Replace various columns with version control information. | |
2182 | This code, like dired, assumes UNIX -l format." | |
3d30b8bc | 2183 | (beginning-of-line) |
edcb979f | 2184 | (let ((pos (point)) limit perm date-and-file) |
2f119435 AS |
2185 | (end-of-line) |
2186 | (setq limit (point)) | |
2187 | (goto-char pos) | |
edcb979f AS |
2188 | (when |
2189 | (or | |
2190 | (re-search-forward ;; owner and group | |
2191 | "^\\(..[drwxlts-]+ \\) *[0-9]+ [^ ]+ +[^ ]+ +[0-9]+\\( .*\\)" | |
0e362f54 | 2192 | limit t) |
edcb979f | 2193 | (re-search-forward ;; only owner displayed |
0e362f54 | 2194 | "^\\(..[drwxlts-]+ \\) *[0-9]+ [^ ]+ +[0-9]+\\( .*\\)" |
edcb979f AS |
2195 | limit t) |
2196 | (re-search-forward ;; OS/2 -l format, no links, owner, group | |
2197 | "^\\(..[drwxlts-]+ \\) *[0-9]+\\( .*\\)" | |
2198 | limit t)) | |
2f119435 | 2199 | (setq perm (match-string 1) |
edcb979f AS |
2200 | date-and-file (match-string 2)) |
2201 | (setq x (substring (concat x " ") 0 10)) | |
2202 | (replace-match (concat perm x date-and-file))))) | |
3d30b8bc RS |
2203 | |
2204 | (defun vc-dired-hook () | |
0e362f54 GM |
2205 | "Reformat the listing according to version control. |
2206 | Called by dired after any portion of a vc-dired buffer has been read in." | |
3d30b8bc | 2207 | (message "Getting version information... ") |
eccceb78 | 2208 | (let (subdir filename (buffer-read-only nil) cvs-dir) |
3d30b8bc | 2209 | (goto-char (point-min)) |
0e362f54 GM |
2210 | (while (not (eobp)) |
2211 | (cond | |
3d30b8bc RS |
2212 | ;; subdir header line |
2213 | ((setq subdir (dired-get-subdir)) | |
0e362f54 GM |
2214 | ;; if the backend supports it, get the state |
2215 | ;; of all files in this directory at once | |
2216 | (let ((backend (vc-responsible-backend subdir))) | |
2217 | (if (vc-find-backend-function backend 'dir-state) | |
2218 | (vc-call-backend backend 'dir-state subdir))) | |
3d30b8bc RS |
2219 | (forward-line 1) |
2220 | ;; erase (but don't remove) the "total" line | |
0e362f54 GM |
2221 | (delete-region (point) (line-end-position)) |
2222 | (beginning-of-line) | |
2223 | (forward-line 1)) | |
2224 | ;; file line | |
3d30b8bc RS |
2225 | ((setq filename (dired-get-filename nil t)) |
2226 | (cond | |
3b574573 | 2227 | ;; subdir |
3d30b8bc | 2228 | ((file-directory-p filename) |
0e362f54 GM |
2229 | (cond |
2230 | ((member (file-name-nondirectory filename) | |
3b574573 AS |
2231 | vc-directory-exclusion-list) |
2232 | (let ((pos (point))) | |
2233 | (dired-kill-tree filename) | |
2234 | (goto-char pos) | |
2235 | (dired-kill-line))) | |
2236 | (vc-dired-terse-mode | |
633cee46 AS |
2237 | ;; Don't show directories in terse mode. Don't use |
2238 | ;; dired-kill-line to remove it, because in recursive listings, | |
2239 | ;; that would remove the directory contents as well. | |
0e362f54 | 2240 | (delete-region (line-beginning-position) |
633cee46 | 2241 | (progn (forward-line 1) (point)))) |
3b574573 AS |
2242 | ((string-match "\\`\\.\\.?\\'" (file-name-nondirectory filename)) |
2243 | (dired-kill-line)) | |
2244 | (t | |
3d30b8bc | 2245 | (vc-dired-reformat-line nil) |
3b574573 AS |
2246 | (forward-line 1)))) |
2247 | ;; ordinary file | |
0e362f54 GM |
2248 | ((and (vc-backend filename) |
2249 | (not (and vc-dired-terse-mode | |
2250 | (vc-up-to-date-p filename)))) | |
2251 | (vc-dired-reformat-line (vc-call dired-state-info filename)) | |
3d30b8bc | 2252 | (forward-line 1)) |
0e362f54 | 2253 | (t |
3d30b8bc RS |
2254 | (dired-kill-line)))) |
2255 | ;; any other line | |
3b574573 AS |
2256 | (t (forward-line 1)))) |
2257 | (vc-dired-purge)) | |
2258 | (message "Getting version information... done") | |
2259 | (save-restriction | |
2260 | (widen) | |
633cee46 AS |
2261 | (cond ((eq (count-lines (point-min) (point-max)) 1) |
2262 | (goto-char (point-min)) | |
2263 | (message "No files locked under %s" default-directory))))) | |
3b574573 AS |
2264 | |
2265 | (defun vc-dired-purge () | |
0e362f54 | 2266 | "Remove empty subdirs." |
3b574573 AS |
2267 | (let (subdir) |
2268 | (goto-char (point-min)) | |
2269 | (while (setq subdir (dired-get-subdir)) | |
2270 | (forward-line 2) | |
2271 | (if (dired-get-filename nil t) | |
2272 | (if (not (dired-next-subdir 1 t)) | |
2273 | (goto-char (point-max))) | |
2274 | (forward-line -2) | |
2275 | (if (not (string= (dired-current-directory) default-directory)) | |
2276 | (dired-do-kill-lines t "") | |
633cee46 AS |
2277 | ;; We cannot remove the top level directory. |
2278 | ;; Just make it look a little nicer. | |
2279 | (forward-line 1) | |
2280 | (kill-line) | |
3b574573 AS |
2281 | (if (not (dired-next-subdir 1 t)) |
2282 | (goto-char (point-max)))))) | |
2283 | (goto-char (point-min)))) | |
2f119435 | 2284 | |
0e362f54 GM |
2285 | (defun vc-dired-buffers-for-dir (dir) |
2286 | "Return a list of all vc-dired buffers that currently display DIR." | |
2287 | (let (result) | |
099bd78a SM |
2288 | ;; Check whether dired is loaded. |
2289 | (when (fboundp 'dired-buffers-for-dir) | |
2290 | (mapcar (lambda (buffer) | |
2291 | (with-current-buffer buffer | |
2292 | (if vc-dired-mode | |
2293 | (setq result (append result (list buffer)))))) | |
2294 | (dired-buffers-for-dir dir))) | |
0e362f54 GM |
2295 | result)) |
2296 | ||
2297 | (defun vc-dired-resynch-file (file) | |
2298 | "Update the entries for FILE in any VC Dired buffers that list it." | |
2299 | (let ((buffers (vc-dired-buffers-for-dir (file-name-directory file)))) | |
2300 | (when buffers | |
2301 | (mapcar (lambda (buffer) | |
2302 | (with-current-buffer buffer | |
2303 | (if (dired-goto-file file) | |
2304 | ;; bind vc-dired-terse-mode to nil so that | |
2305 | ;; files won't vanish when they are checked in | |
2306 | (let ((vc-dired-terse-mode nil)) | |
2307 | (dired-do-redisplay 1))))) | |
2308 | buffers)))) | |
2309 | ||
637a8ae9 | 2310 | ;;;###autoload |
0e362f54 GM |
2311 | (defun vc-directory (dir read-switches) |
2312 | "Create a buffer in VC Dired Mode for directory DIR. | |
2313 | ||
2314 | See Info node `VC Dired Mode'. | |
2315 | ||
2316 | With prefix arg READ-SWITCHES, specify a value to override | |
2317 | `dired-listing-switches' when generating the listing." | |
2f119435 | 2318 | (interactive "DDired under VC (directory): \nP") |
0e362f54 | 2319 | (let ((vc-dired-switches (concat vc-dired-listing-switches |
3b574573 | 2320 | (if vc-dired-recurse "R" "")))) |
0e362f54 | 2321 | (if read-switches |
3b574573 AS |
2322 | (setq vc-dired-switches |
2323 | (read-string "Dired listing switches: " | |
2324 | vc-dired-switches))) | |
3d30b8bc RS |
2325 | (require 'dired) |
2326 | (require 'dired-aux) | |
0e362f54 GM |
2327 | (switch-to-buffer |
2328 | (dired-internal-noselect (expand-file-name (file-name-as-directory dir)) | |
2329 | vc-dired-switches | |
3d30b8bc | 2330 | 'vc-dired-mode)))) |
e70bdc98 | 2331 | |
594722a8 ER |
2332 | |
2333 | ;; Named-configuration entry points | |
2334 | ||
0e362f54 | 2335 | (defun vc-snapshot-precondition (dir) |
099bd78a SM |
2336 | "Scan the tree below DIR, looking for non-uptodate files. |
2337 | If any file is not up-to-date, return the name of the first such file. | |
2338 | \(This means, neither snapshot creation nor retrieval is allowed.\) | |
2339 | If one or more of the files are currently visited, return `visited'. | |
2340 | Otherwise, return nil." | |
503b5c85 RS |
2341 | (let ((status nil)) |
2342 | (catch 'vc-locked-example | |
2343 | (vc-file-tree-walk | |
0e362f54 GM |
2344 | dir |
2345 | (lambda (f) | |
2346 | (if (not (vc-up-to-date-p f)) (throw 'vc-locked-example f) | |
2347 | (if (get-file-buffer f) (setq status 'visited))))) | |
503b5c85 | 2348 | status))) |
594722a8 | 2349 | |
637a8ae9 | 2350 | ;;;###autoload |
0e362f54 | 2351 | (defun vc-create-snapshot (dir name branchp) |
6f41eeb5 | 2352 | "Descending recursively from DIR, make a snapshot called NAME. |
0e362f54 GM |
2353 | For each registered file, the version level of its latest version |
2354 | becomes part of the named configuration. If the prefix argument | |
2355 | BRANCHP is given, the snapshot is made as a new branch and the files | |
2356 | are checked out in that new branch." | |
2357 | (interactive | |
2358 | (list (read-file-name "Directory: " default-directory default-directory t) | |
2359 | (read-string "New snapshot name: ") | |
2360 | current-prefix-arg)) | |
2361 | (message "Making %s... " (if branchp "branch" "snapshot")) | |
2362 | (if (file-directory-p dir) (setq dir (file-name-as-directory dir))) | |
2363 | (vc-call-backend (vc-responsible-backend dir) | |
2364 | 'create-snapshot dir name branchp) | |
2365 | (message "Making %s... done" (if branchp "branch" "snapshot"))) | |
2366 | ||
2367 | (defun vc-default-create-snapshot (backend dir name branchp) | |
6f41eeb5 | 2368 | (when branchp |
0e362f54 GM |
2369 | (error "VC backend %s does not support module branches" backend)) |
2370 | (let ((result (vc-snapshot-precondition dir))) | |
503b5c85 | 2371 | (if (stringp result) |
0e362f54 | 2372 | (error "File %s is not up-to-date" result) |
1dabb4e6 | 2373 | (vc-file-tree-walk |
0e362f54 GM |
2374 | dir |
2375 | (lambda (f) | |
2376 | (vc-call assign-name f name)))))) | |
594722a8 | 2377 | |
637a8ae9 | 2378 | ;;;###autoload |
0e362f54 | 2379 | (defun vc-retrieve-snapshot (dir name) |
099bd78a SM |
2380 | "Descending recursively from DIR, retrieve the snapshot called NAME. |
2381 | If NAME is empty, it refers to the latest versions. | |
2382 | If locking is used for the files in DIR, then there must not be any | |
2383 | locked files at or below DIR (but if NAME is empty, locked files are | |
2384 | allowed and simply skipped)." | |
0e362f54 GM |
2385 | (interactive |
2386 | (list (read-file-name "Directory: " default-directory default-directory t) | |
2387 | (read-string "Snapshot name to retrieve (default latest versions): "))) | |
2388 | (let ((update (yes-or-no-p "Update any affected buffers? ")) | |
2389 | (msg (if (or (not name) (string= name "")) | |
2390 | (format "Updating %s... " (abbreviate-file-name dir)) | |
2391 | (format "Retrieving snapshot into %s... " | |
2392 | (abbreviate-file-name dir))))) | |
2393 | (message msg) | |
2394 | (vc-call-backend (vc-responsible-backend dir) | |
2395 | 'retrieve-snapshot dir name update) | |
2396 | (message (concat msg "done")))) | |
2397 | ||
2398 | (defun vc-default-retrieve-snapshot (backend dir name update) | |
2399 | (if (string= name "") | |
2400 | (progn | |
2401 | (vc-file-tree-walk | |
2402 | dir | |
2403 | (lambda (f) (and | |
2404 | (vc-up-to-date-p f) | |
2405 | (vc-error-occurred | |
2406 | (vc-call checkout f nil "") | |
2407 | (if update (vc-resynch-buffer f t t))))))) | |
2408 | (let ((result (vc-snapshot-precondition dir))) | |
2409 | (if (stringp result) | |
2410 | (error "File %s is locked" result) | |
2411 | (setq update (and (eq result 'visited) update)) | |
2412 | (vc-file-tree-walk | |
2413 | dir | |
fd8092f0 SM |
2414 | (lambda (f) (vc-error-occurred |
2415 | (vc-call checkout f nil name) | |
2416 | (if update (vc-resynch-buffer f t t))))))))) | |
594722a8 ER |
2417 | |
2418 | ;; Miscellaneous other entry points | |
2419 | ||
637a8ae9 | 2420 | ;;;###autoload |
594722a8 ER |
2421 | (defun vc-print-log () |
2422 | "List the change log of the current buffer in a window." | |
2423 | (interactive) | |
b6909007 AS |
2424 | (vc-ensure-vc-buffer) |
2425 | (let ((file buffer-file-name)) | |
0e362f54 | 2426 | (vc-call print-log file) |
ad339989 | 2427 | (set-buffer "*vc*") |
0e362f54 GM |
2428 | (pop-to-buffer (current-buffer)) |
2429 | (if (fboundp 'log-view-mode) (log-view-mode)) | |
2430 | (vc-exec-after | |
2431 | `(progn | |
2432 | (goto-char (point-max)) (forward-line -1) | |
2433 | (while (looking-at "=*\n") | |
2434 | (delete-char (- (match-end 0) (match-beginning 0))) | |
2435 | (forward-line -1)) | |
2436 | (goto-char (point-min)) | |
2437 | (if (looking-at "[\b\t\n\v\f\r ]+") | |
2438 | (delete-char (- (match-end 0) (match-beginning 0)))) | |
2439 | (shrink-window-if-larger-than-buffer) | |
2440 | ;; move point to the log entry for the current version | |
2441 | (if (fboundp 'log-view-goto-rev) | |
2442 | (log-view-goto-rev ',(vc-workfile-version file)) | |
2443 | (if (vc-find-backend-function ',(vc-backend file) 'show-log-entry) | |
6f41eeb5 DL |
2444 | (vc-call-backend ',(vc-backend file) |
2445 | 'show-log-entry | |
0e362f54 | 2446 | ',(vc-workfile-version file)))))))) |
594722a8 | 2447 | |
0ab66291 AS |
2448 | (defun vc-default-comment-history (backend file) |
2449 | "Return a string with all log entries that were made under BACKEND for FILE." | |
2450 | (if (vc-find-backend-function backend 'print-log) | |
2451 | (with-temp-buffer | |
2452 | (vc-call print-log file) | |
2453 | (vc-call wash-log file) | |
2454 | (buffer-string)))) | |
2455 | ||
2456 | (defun vc-default-wash-log (backend file) | |
2457 | "Remove all non-comment information from log output. | |
2458 | This default implementation works for RCS logs; backends should override | |
2459 | it if their logs are not in RCS format." | |
2460 | (let ((separator (concat "^-+\nrevision [0-9.]+\ndate: .*\n" | |
2461 | "\\(branches: .*;\n\\)?" | |
2462 | "\\(\\*\\*\\* empty log message \\*\\*\\*\n\\)?"))) | |
2463 | (goto-char (point-max)) (forward-line -1) | |
2464 | (while (looking-at "=*\n") | |
2465 | (delete-char (- (match-end 0) (match-beginning 0))) | |
2466 | (forward-line -1)) | |
2467 | (goto-char (point-min)) | |
2468 | (if (looking-at "[\b\t\n\v\f\r ]+") | |
2469 | (delete-char (- (match-end 0) (match-beginning 0)))) | |
2470 | (goto-char (point-min)) | |
2471 | (re-search-forward separator nil t) | |
2472 | (delete-region (point-min) (point)) | |
2473 | (while (re-search-forward separator nil t) | |
2474 | (delete-region (match-beginning 0) (match-end 0))))) | |
2475 | ||
637a8ae9 | 2476 | ;;;###autoload |
594722a8 | 2477 | (defun vc-revert-buffer () |
18483cf0 | 2478 | "Revert the current buffer's file back to the version it was based on. |
9c95ac44 | 2479 | This asks for confirmation if the buffer contents are not identical |
7849e179 SM |
2480 | to that version. This function does not automatically pick up newer |
2481 | changes found in the master file; use \\[universal-argument] \\[vc-next-action] to do so." | |
594722a8 | 2482 | (interactive) |
b6909007 | 2483 | (vc-ensure-vc-buffer) |
594722a8 | 2484 | (let ((file buffer-file-name) |
221cc4f4 RS |
2485 | ;; This operation should always ask for confirmation. |
2486 | (vc-suppress-confirm nil) | |
ffda0460 AS |
2487 | (obuf (current-buffer)) |
2488 | status) | |
c96da2b0 AS |
2489 | (if (vc-up-to-date-p file) |
2490 | (unless (yes-or-no-p "File seems up-to-date. Revert anyway? ") | |
2491 | (error "Revert canceled"))) | |
0e362f54 | 2492 | (unless (vc-workfile-unchanged-p file) |
a3255400 SM |
2493 | ;; vc-diff selects the new window, which is not what we want: |
2494 | ;; if the new window is on another frame, that'd require the user | |
2495 | ;; moving her mouse to answer the yes-or-no-p question. | |
2496 | (let ((win (save-selected-window | |
2497 | (setq status (vc-diff nil t)) (selected-window)))) | |
2498 | (vc-exec-after `(message nil)) | |
2499 | (when status | |
2500 | (unwind-protect | |
2501 | (unless (yes-or-no-p "Discard changes? ") | |
ffda0460 | 2502 | (error "Revert canceled")) |
a3255400 SM |
2503 | (select-window win) |
2504 | (if (one-window-p t) | |
2505 | (if (window-dedicated-p (selected-window)) | |
2506 | (make-frame-invisible)) | |
2507 | (delete-window)))))) | |
751fa747 | 2508 | (set-buffer obuf) |
0e362f54 GM |
2509 | ;; Do the reverting |
2510 | (message "Reverting %s..." file) | |
045e1aa5 | 2511 | (vc-revert-file file) |
0e362f54 | 2512 | (message "Reverting %s...done" file))) |
594722a8 | 2513 | |
ffda0460 | 2514 | (defun vc-version-backup-file (file &optional rev) |
66321b2f SM |
2515 | "Return name of backup file for revision REV of FILE. |
2516 | If version backups should be used for FILE, and there exists | |
ffda0460 | 2517 | such a backup for REV or the current workfile version of file, |
66321b2f | 2518 | return its name; otherwise return nil." |
10b48cc4 | 2519 | (when (vc-call make-version-backups-p file) |
ffda0460 | 2520 | (let ((backup-file (vc-version-backup-file-name file rev))) |
10b48cc4 AS |
2521 | (if (file-exists-p backup-file) |
2522 | backup-file | |
2523 | ;; there is no automatic backup, but maybe the user made one manually | |
2524 | (setq backup-file (vc-version-backup-file-name file rev 'manual)) | |
2525 | (if (file-exists-p backup-file) | |
2526 | backup-file))))) | |
ffda0460 | 2527 | |
045e1aa5 AS |
2528 | (defun vc-revert-file (file) |
2529 | "Revert FILE back to the version it was based on." | |
045e1aa5 AS |
2530 | (with-vc-properties |
2531 | file | |
ffda0460 | 2532 | (let ((backup-file (vc-version-backup-file file))) |
bbfc07d3 | 2533 | (when backup-file |
ffda0460 | 2534 | (copy-file backup-file file 'ok-if-already-exists 'keep-date) |
bbfc07d3 AS |
2535 | (vc-delete-automatic-version-backups file)) |
2536 | (vc-call revert file backup-file)) | |
a3255400 SM |
2537 | `((vc-state . up-to-date) |
2538 | (vc-checkout-time . ,(nth 5 (file-attributes file))))) | |
045e1aa5 AS |
2539 | (vc-resynch-buffer file t t)) |
2540 | ||
637a8ae9 | 2541 | ;;;###autoload |
594722a8 | 2542 | (defun vc-cancel-version (norevert) |
34291cd2 | 2543 | "Get rid of most recently checked in version of this file. |
099bd78a | 2544 | A prefix argument NOREVERT means do not revert the buffer afterwards." |
594722a8 | 2545 | (interactive "P") |
b6909007 | 2546 | (vc-ensure-vc-buffer) |
099bd78a SM |
2547 | (let* ((file (buffer-file-name)) |
2548 | (backend (vc-backend file)) | |
2549 | (target (vc-workfile-version file)) | |
7e48e092 | 2550 | (config (current-window-configuration)) done) |
0e362f54 | 2551 | (cond |
099bd78a | 2552 | ((not (vc-find-backend-function backend 'cancel-version)) |
0e362f54 | 2553 | (error "Sorry, canceling versions is not supported under %s" backend)) |
099bd78a | 2554 | ((not (vc-call latest-on-branch-p file)) |
0e362f54 | 2555 | (error "This is not the latest version; VC cannot cancel it")) |
099bd78a | 2556 | ((not (vc-up-to-date-p file)) |
0e362f54 | 2557 | (error (substitute-command-keys "File is not up to date; use \\[vc-revert-buffer] to discard changes")))) |
7e48e092 | 2558 | (if (null (yes-or-no-p (format "Remove version %s from master? " target))) |
099bd78a | 2559 | (error "Aborted") |
0e362f54 GM |
2560 | (setq norevert (or norevert (not |
2561 | (yes-or-no-p "Revert buffer to most recent remaining version? ")))) | |
2562 | ||
099bd78a SM |
2563 | (message "Removing last change from %s..." file) |
2564 | (with-vc-properties | |
2565 | file | |
2566 | (vc-call cancel-version file norevert) | |
a3255400 | 2567 | `((vc-state . ,(if norevert 'edited 'up-to-date)) |
46e33aee TTN |
2568 | (vc-checkout-time . ,(if norevert |
2569 | 0 | |
099bd78a | 2570 | (nth 5 (file-attributes file)))) |
a3255400 | 2571 | (vc-workfile-version . nil))) |
099bd78a SM |
2572 | (message "Removing last change from %s...done" file) |
2573 | ||
2574 | (cond | |
2575 | (norevert ;; clear version headers and mark the buffer modified | |
2576 | (set-visited-file-name file) | |
2577 | (when (not vc-make-backup-files) | |
2578 | ;; inhibit backup for this buffer | |
2579 | (make-local-variable 'backup-inhibited) | |
2580 | (setq backup-inhibited t)) | |
2581 | (setq buffer-read-only nil) | |
2582 | (vc-clear-headers) | |
2583 | (vc-mode-line file) | |
2584 | (vc-dired-resynch-file file)) | |
2585 | (t ;; revert buffer to file on disk | |
2586 | (vc-resynch-buffer file t t))) | |
0e362f54 GM |
2587 | (message "Version %s has been removed from the master" target)))) |
2588 | ||
76e5906d | 2589 | ;;;###autoload |
1d502d5a | 2590 | (defun vc-switch-backend (file backend) |
7849e179 | 2591 | "Make BACKEND the current version control system for FILE. |
1d502d5a AS |
2592 | FILE must already be registered in BACKEND. The change is not |
2593 | permanent, only for the current session. This function only changes | |
7849e179 SM |
2594 | VC's perspective on FILE, it does not register or unregister it. |
2595 | By default, this command cycles through the registered backends. | |
2596 | To get a prompt, use a prefix argument." | |
2597 | (interactive | |
1d502d5a AS |
2598 | (list |
2599 | buffer-file-name | |
7849e179 SM |
2600 | (let ((backend (vc-backend buffer-file-name)) |
2601 | (backends nil)) | |
2602 | ;; Find the registered backends. | |
2603 | (dolist (backend vc-handled-backends) | |
2604 | (when (vc-call-backend backend 'registered buffer-file-name) | |
2605 | (push backend backends))) | |
2606 | ;; Find the next backend. | |
ceec5a0c | 2607 | (let ((def (car (delq backend (append (memq backend backends) backends)))) |
7849e179 SM |
2608 | (others (delete backend backends))) |
2609 | (cond | |
2610 | ((null others) (error "No other backend to switch to")) | |
2611 | (current-prefix-arg | |
2612 | (intern | |
2613 | (upcase | |
2614 | (completing-read | |
2615 | (format "Switch to backend [%s]: " def) | |
2616 | (mapcar (lambda (b) (list (downcase (symbol-name b)))) backends) | |
2617 | nil t nil nil (downcase (symbol-name def)))))) | |
2618 | (t def)))))) | |
ceec5a0c | 2619 | (unless (eq backend (vc-backend file)) |
ceec5a0c SM |
2620 | (vc-file-clearprops file) |
2621 | (vc-file-setprop file 'vc-backend backend) | |
2622 | ;; Force recomputation of the state | |
a3255400 SM |
2623 | (unless (vc-call-backend backend 'registered file) |
2624 | (vc-file-clearprops file) | |
2625 | (error "%s is not registered in %s" file backend)) | |
ceec5a0c | 2626 | (vc-mode-line file))) |
1d502d5a | 2627 | |
21b50296 | 2628 | ;;;###autoload |
1d502d5a | 2629 | (defun vc-transfer-file (file new-backend) |
ceec5a0c | 2630 | "Transfer FILE to another version control system NEW-BACKEND. |
1d502d5a | 2631 | If NEW-BACKEND has a higher precedence than FILE's current backend |
ceec5a0c | 2632 | \(i.e. it comes earlier in `vc-handled-backends'), then register FILE in |
1d502d5a AS |
2633 | NEW-BACKEND, using the version number from the current backend as the |
2634 | base level. If NEW-BACKEND has a lower precedence than the current | |
2635 | backend, then commit all changes that were made under the current | |
2636 | backend to NEW-BACKEND, and unregister FILE from the current backend. | |
2637 | \(If FILE is not yet registered under NEW-BACKEND, register it.)" | |
72cfc5fb AS |
2638 | (let* ((old-backend (vc-backend file)) |
2639 | (edited (memq (vc-state file) '(edited needs-merge))) | |
2640 | (registered (vc-call-backend new-backend 'registered file)) | |
2641 | (move | |
2642 | (and registered ; Never move if not registered in new-backend yet. | |
2643 | ;; move if new-backend comes later in vc-handled-backends | |
2644 | (or (memq new-backend (memq old-backend vc-handled-backends)) | |
ffda0460 | 2645 | (y-or-n-p "Final transfer? ")))) |
72cfc5fb | 2646 | (comment nil)) |
1d502d5a | 2647 | (if (eq old-backend new-backend) |
72cfc5fb AS |
2648 | (error "%s is the current backend of %s" new-backend file)) |
2649 | (if registered | |
2650 | (set-file-modes file (logior (file-modes file) 128)) | |
2651 | ;; `registered' might have switched under us. | |
2652 | (vc-switch-backend file old-backend) | |
ffda0460 AS |
2653 | (let* ((rev (vc-workfile-version file)) |
2654 | (modified-file (and edited (make-temp-name file))) | |
2655 | (unmodified-file (and modified-file (vc-version-backup-file file)))) | |
72cfc5fb AS |
2656 | ;; Go back to the base unmodified file. |
2657 | (unwind-protect | |
2658 | (progn | |
ffda0460 AS |
2659 | (when modified-file |
2660 | (copy-file file modified-file) | |
2661 | ;; If we have a local copy of the unmodified file, handle that | |
2662 | ;; here and not in vc-revert-file because we don't want to | |
2663 | ;; delete that copy -- it is still useful for OLD-BACKEND. | |
2664 | (if unmodified-file | |
2665 | (copy-file unmodified-file file 'ok-if-already-exists) | |
2666 | (if (y-or-n-p "Get base version from master? ") | |
2667 | (vc-revert-file file)))) | |
72cfc5fb | 2668 | (vc-call-backend new-backend 'receive-file file rev)) |
ffda0460 | 2669 | (when modified-file |
72cfc5fb AS |
2670 | (vc-switch-backend file new-backend) |
2671 | (unless (eq (vc-checkout-model file) 'implicit) | |
2672 | (vc-checkout file t nil)) | |
ffda0460 AS |
2673 | (rename-file modified-file file 'ok-if-already-exists) |
2674 | (vc-file-setprop file 'vc-checkout-time nil))))) | |
72cfc5fb AS |
2675 | (when move |
2676 | (vc-switch-backend file old-backend) | |
2677 | (setq comment (vc-call comment-history file)) | |
2678 | (vc-call unregister file)) | |
2679 | (vc-switch-backend file new-backend) | |
2680 | (when (or move edited) | |
1d502d5a | 2681 | (vc-file-setprop file 'vc-state 'edited) |
ffda0460 | 2682 | (vc-mode-line file) |
0ab66291 | 2683 | (vc-checkin file nil comment (stringp comment))))) |
1d502d5a | 2684 | |
72cfc5fb AS |
2685 | (defun vc-default-unregister (backend file) |
2686 | "Default implementation of `vc-unregister', signals an error." | |
2687 | (error "Unregistering files is not supported for %s" backend)) | |
2688 | ||
2689 | (defun vc-default-receive-file (backend file rev) | |
2690 | "Let BACKEND receive FILE from another version control system." | |
2691 | (vc-call-backend backend 'register file rev "")) | |
2692 | ||
0e362f54 GM |
2693 | (defun vc-rename-master (oldmaster newfile templates) |
2694 | "Rename OLDMASTER to be the master file for NEWFILE based on TEMPLATES." | |
2695 | (let* ((dir (file-name-directory (expand-file-name oldmaster))) | |
2696 | (newdir (or (file-name-directory newfile) "")) | |
2697 | (newbase (file-name-nondirectory newfile)) | |
2698 | (masters | |
2699 | ;; List of potential master files for `newfile' | |
2700 | (mapcar | |
2701 | (lambda (s) (vc-possible-master s newdir newbase)) | |
2702 | templates))) | |
2703 | (if (or (file-symlink-p oldmaster) | |
2704 | (file-symlink-p (file-name-directory oldmaster))) | |
2705 | (error "This unsafe in the presence of symbolic links")) | |
2706 | (rename-file | |
2707 | oldmaster | |
2708 | (catch 'found | |
2709 | ;; If possible, keep the master file in the same directory. | |
2710 | (mapcar (lambda (f) | |
2711 | (if (and f (string= (file-name-directory (expand-file-name f)) | |
2712 | dir)) | |
2713 | (throw 'found f))) | |
2714 | masters) | |
2715 | ;; If not, just use the first possible place. | |
2716 | (mapcar (lambda (f) | |
2717 | (and f | |
2718 | (or (not (setq dir (file-name-directory f))) | |
2719 | (file-directory-p dir)) | |
2720 | (throw 'found f))) | |
2721 | masters) | |
2722 | (error "New file lacks a version control directory"))))) | |
594722a8 | 2723 | |
29fc1ce9 | 2724 | ;;;###autoload |
594722a8 | 2725 | (defun vc-rename-file (old new) |
34291cd2 RS |
2726 | "Rename file OLD to NEW, and rename its master file likewise." |
2727 | (interactive "fVC rename file: \nFRename to: ") | |
0e362f54 GM |
2728 | (let ((oldbuf (get-file-buffer old)) |
2729 | (backend (vc-backend old))) | |
2730 | (unless (or (null backend) (vc-find-backend-function backend 'rename-file)) | |
2731 | (error "Renaming files under %s is not supported in VC" backend)) | |
d52f0de9 | 2732 | (if (and oldbuf (buffer-modified-p oldbuf)) |
590cc449 | 2733 | (error "Please save files before moving them")) |
594722a8 | 2734 | (if (get-file-buffer new) |
590cc449 | 2735 | (error "Already editing new file name")) |
d52f0de9 RS |
2736 | (if (file-exists-p new) |
2737 | (error "New file already exists")) | |
0e362f54 GM |
2738 | (when backend |
2739 | (if (and backend (not (vc-up-to-date-p old))) | |
2740 | (error "Please check in files before moving them")) | |
2741 | (vc-call-backend backend 'rename-file old new)) | |
2742 | ;; Move the actual file (unless the backend did it already) | |
2743 | (if (or (not backend) (file-exists-p old)) | |
2744 | (rename-file old new)) | |
2745 | ;; ?? Renaming a file might change its contents due to keyword expansion. | |
2746 | ;; We should really check out a new copy if the old copy was precisely equal | |
2747 | ;; to some checked in version. However, testing for this is tricky.... | |
594722a8 | 2748 | (if oldbuf |
0e362f54 | 2749 | (with-current-buffer oldbuf |
4c145b9e RS |
2750 | (let ((buffer-read-only buffer-read-only)) |
2751 | (set-visited-file-name new)) | |
2752 | (vc-backend new) | |
2753 | (vc-mode-line new) | |
0e362f54 GM |
2754 | (set-buffer-modified-p nil))))) |
2755 | ||
2756 | ;; Only defined in very recent Emacsen | |
2757 | (defvar small-temporary-file-directory nil) | |
594722a8 | 2758 | |
637a8ae9 | 2759 | ;;;###autoload |
f35ecf88 | 2760 | (defun vc-update-change-log (&rest args) |
0e362f54 | 2761 | "Find change log file and add entries from recent version control logs. |
d68e6990 | 2762 | Normally, find log entries for all registered files in the default |
0e362f54 | 2763 | directory. |
d68e6990 | 2764 | |
099bd78a | 2765 | With prefix arg of \\[universal-argument], only find log entries for the current buffer's file. |
d68e6990 RS |
2766 | |
2767 | With any numeric prefix arg, find log entries for all currently visited | |
2768 | files that are under version control. This puts all the entries in the | |
2769 | log for the default directory, which may not be appropriate. | |
2770 | ||
099bd78a | 2771 | From a program, any ARGS are assumed to be filenames for which |
0e362f54 | 2772 | log entries should be gathered." |
67242a23 RM |
2773 | (interactive |
2774 | (cond ((consp current-prefix-arg) ;C-u | |
2775 | (list buffer-file-name)) | |
2776 | (current-prefix-arg ;Numeric argument. | |
2777 | (let ((files nil) | |
2778 | (buffers (buffer-list)) | |
2779 | file) | |
2780 | (while buffers | |
2781 | (setq file (buffer-file-name (car buffers))) | |
f3c61d82 | 2782 | (and file (vc-backend file) |
4b40fdea | 2783 | (setq files (cons file files))) |
67242a23 | 2784 | (setq buffers (cdr buffers))) |
4b40fdea PE |
2785 | files)) |
2786 | (t | |
0e362f54 GM |
2787 | ;; Don't supply any filenames to backend; this means |
2788 | ;; it should find all relevant files relative to | |
2789 | ;; the default-directory. | |
73a9679c | 2790 | nil))) |
0e362f54 GM |
2791 | (vc-call-backend (vc-responsible-backend default-directory) |
2792 | 'update-changelog args)) | |
2793 | ||
2794 | (defun vc-default-update-changelog (backend files) | |
099bd78a SM |
2795 | "Default implementation of update-changelog. |
2796 | Uses `rcs2log' which only works for RCS and CVS." | |
0e362f54 | 2797 | ;; FIXME: We (c|sh)ould add support for cvs2cl |
449decf5 | 2798 | (let ((odefault default-directory) |
124c852b RS |
2799 | (changelog (find-change-log)) |
2800 | ;; Presumably not portable to non-Unixy systems, along with rcs2log: | |
0e362f54 GM |
2801 | (tempfile (funcall |
2802 | (if (fboundp 'make-temp-file) 'make-temp-file 'make-temp-name) | |
57c298c4 EZ |
2803 | (expand-file-name "vc" |
2804 | (or small-temporary-file-directory | |
2805 | temporary-file-directory)))) | |
b91916f3 | 2806 | (full-name (or add-log-full-name |
8172cd86 AS |
2807 | (user-full-name) |
2808 | (user-login-name) | |
2809 | (format "uid%d" (number-to-string (user-uid))))) | |
b91916f3 RS |
2810 | (mailing-address (or add-log-mailing-address |
2811 | user-mail-address))) | |
124c852b | 2812 | (find-file-other-window changelog) |
41dfb835 RS |
2813 | (barf-if-buffer-read-only) |
2814 | (vc-buffer-sync) | |
2815 | (undo-boundary) | |
2816 | (goto-char (point-min)) | |
2817 | (push-mark) | |
2818 | (message "Computing change log entries...") | |
4b40fdea | 2819 | (message "Computing change log entries... %s" |
124c852b RS |
2820 | (unwind-protect |
2821 | (progn | |
0e362f54 | 2822 | (setq default-directory odefault) |
6f41eeb5 DL |
2823 | (if (eq 0 (apply 'call-process |
2824 | (expand-file-name "rcs2log" | |
2825 | exec-directory) | |
0e362f54 GM |
2826 | nil (list t tempfile) nil |
2827 | "-c" changelog | |
2828 | "-u" (concat (vc-user-login-name) | |
2829 | "\t" full-name | |
2830 | "\t" mailing-address) | |
2831 | (mapcar | |
2832 | (lambda (f) | |
2833 | (file-relative-name | |
2834 | (if (file-name-absolute-p f) | |
2835 | f | |
2836 | (concat odefault f)))) | |
2837 | files))) | |
2838 | "done" | |
124c852b RS |
2839 | (pop-to-buffer |
2840 | (set-buffer (get-buffer-create "*vc*"))) | |
2841 | (erase-buffer) | |
2842 | (insert-file tempfile) | |
2843 | "failed")) | |
0e362f54 | 2844 | (setq default-directory (file-name-directory changelog)) |
124c852b | 2845 | (delete-file tempfile))))) |
7d2d9482 | 2846 | |
ec402ad4 | 2847 | ;; Annotate functionality |
7d2d9482 | 2848 | |
f80f7bc2 RS |
2849 | ;; Declare globally instead of additional parameter to |
2850 | ;; temp-buffer-show-function (not possible to pass more than one | |
75665141 AS |
2851 | ;; parameter). The use of annotate-ratio is deprecated in favor of |
2852 | ;; annotate-mode, which replaces it with the more sensible "span-to | |
2853 | ;; days", along with autoscaling support. | |
099bd78a SM |
2854 | (defvar vc-annotate-ratio nil "Global variable.") |
2855 | (defvar vc-annotate-backend nil "Global variable.") | |
0e362f54 GM |
2856 | |
2857 | (defun vc-annotate-get-backend (buffer) | |
099bd78a SM |
2858 | "Return the backend matching \"Annotate\" buffer BUFFER. |
2859 | Return NIL if no match made. Associations are made based on | |
0e362f54 GM |
2860 | `vc-annotate-buffers'." |
2861 | (cdr (assoc buffer vc-annotate-buffers))) | |
7d2d9482 | 2862 | |
0e362f54 GM |
2863 | (define-derived-mode vc-annotate-mode fundamental-mode "Annotate" |
2864 | "Major mode for buffers displaying output from the `annotate' command. | |
7d2d9482 RS |
2865 | |
2866 | You can use the mode-specific menu to alter the time-span of the used | |
2867 | colors. See variable `vc-annotate-menu-elements' for customizing the | |
2868 | menu items." | |
7d2d9482 RS |
2869 | (vc-annotate-add-menu)) |
2870 | ||
75665141 AS |
2871 | (defun vc-annotate-display-default (&optional ratio) |
2872 | "Use the default color spectrum for VC Annotate mode, scaling the | |
2873 | colormap by RATIO, if present. Use the current time as offset." | |
0e362f54 | 2874 | (interactive "e") |
f80f7bc2 | 2875 | (message "Redisplaying annotation...") |
75665141 AS |
2876 | (vc-annotate-display |
2877 | (if ratio (vc-annotate-time-span vc-annotate-color-map ratio))) | |
f80f7bc2 | 2878 | (message "Redisplaying annotation...done")) |
7d2d9482 | 2879 | |
75665141 AS |
2880 | (defun vc-annotate-display-autoscale (&optional full) |
2881 | "Re-display annotation using colormap scaled from the current time | |
2882 | to the oldest annotation in the buffer, or, with argument FULL set, to | |
2883 | cover the full time range, from oldest to newest." | |
2884 | (interactive) | |
2885 | (let ((newest 0.0) | |
2886 | (oldest 999999.) ;Any CVS users at the founding of Rome? | |
2887 | (current (vc-annotate-convert-time (current-time))) | |
2888 | date) | |
2889 | (message "Redisplaying annotation...") | |
2890 | ;; Run through this file and find the oldest and newest dates annotated. | |
2891 | (save-excursion | |
2892 | (goto-char (point-min)) | |
2893 | (while (setq date (vc-call-backend vc-annotate-backend 'annotate-time)) | |
2894 | (if (> date newest) | |
2895 | (setq newest date)) | |
2896 | (if (< date oldest) | |
2897 | (setq oldest date)))) | |
2898 | (vc-annotate-display | |
2899 | (vc-annotate-time-span ;return the scaled colormap. | |
2900 | vc-annotate-color-map | |
2901 | (/ (- (if full newest current) oldest) | |
2902 | (vc-annotate-car-last-cons vc-annotate-color-map))) | |
2903 | (if full newest)) | |
2904 | (message "Redisplaying annotation...done \(%s\)" | |
2905 | (if full | |
2906 | (format "Spanned from %.1f to %.1f days old" | |
2907 | (- current oldest) | |
2908 | (- current newest)) | |
2909 | (format "Spanned to %.1f days old" (- current oldest)))))) | |
2910 | ||
2911 | ;; Menu -- Using easymenu.el | |
7d2d9482 | 2912 | (defun vc-annotate-add-menu () |
0e362f54 | 2913 | "Add the menu 'Annotate' to the menu bar in VC-Annotate mode." |
75665141 AS |
2914 | (let ((menu-elements vc-annotate-menu-elements) |
2915 | (menu-def | |
2916 | '("VC-Annotate" | |
2917 | ["Default" (unless (null vc-annotate-display-mode) | |
2918 | (setq vc-annotate-display-mode nil) | |
2919 | (vc-annotate-display-select)) | |
2920 | :style toggle :selected (null vc-annotate-display-mode)])) | |
2921 | (oldest-in-map (vc-annotate-car-last-cons vc-annotate-color-map))) | |
7d2d9482 RS |
2922 | (while menu-elements |
2923 | (let* ((element (car menu-elements)) | |
75665141 | 2924 | (days (* element oldest-in-map))) |
7d2d9482 | 2925 | (setq menu-elements (cdr menu-elements)) |
75665141 AS |
2926 | (setq menu-def |
2927 | (append menu-def | |
2928 | `([,(format "Span %.1f days" days) | |
2929 | (unless (and (numberp vc-annotate-display-mode) | |
2930 | (= vc-annotate-display-mode ,days)) | |
2931 | (vc-annotate-display-select nil ,days)) | |
2932 | :style toggle :selected | |
2933 | (and (numberp vc-annotate-display-mode) | |
2934 | (= vc-annotate-display-mode ,days)) ]))))) | |
2935 | (setq menu-def | |
2936 | (append menu-def | |
2937 | (list | |
2938 | ["Span ..." | |
2939 | (let ((days | |
2940 | (float (string-to-number | |
2941 | (read-string "Span how many days? "))))) | |
2942 | (vc-annotate-display-select nil days)) t]) | |
2943 | (list "--") | |
2944 | (list | |
2945 | ["Span to Oldest" | |
2946 | (unless (eq vc-annotate-display-mode 'scale) | |
2947 | (vc-annotate-display-select nil 'scale)) | |
2948 | :style toggle :selected | |
2949 | (eq vc-annotate-display-mode 'scale)]) | |
2950 | (list | |
2951 | ["Span Oldest->Newest" | |
2952 | (unless (eq vc-annotate-display-mode 'fullscale) | |
2953 | (vc-annotate-display-select nil 'fullscale)) | |
2954 | :style toggle :selected | |
2955 | (eq vc-annotate-display-mode 'fullscale)]))) | |
2956 | ;; Define the menu | |
2957 | (if (or (featurep 'easymenu) (load "easymenu" t)) | |
2958 | (easy-menu-define vc-annotate-mode-menu vc-annotate-mode-map | |
2959 | "VC Annotate Display Menu" menu-def)))) | |
2960 | ||
2961 | (defun vc-annotate-display-select (&optional buffer mode) | |
2962 | "Do the default or chosen annotation display as specified in the | |
2963 | customizable variable `vc-annotate-display-mode'." | |
f80f7bc2 | 2964 | (interactive) |
75665141 AS |
2965 | (if mode (setq vc-annotate-display-mode mode)) |
2966 | (when buffer | |
2967 | (set-buffer buffer) | |
2968 | (display-buffer buffer)) | |
2969 | (if (not vc-annotate-mode) ; Turn on vc-annotate-mode if not done | |
2970 | (vc-annotate-mode)) | |
2971 | (cond ((null vc-annotate-display-mode) (vc-annotate-display-default | |
2972 | vc-annotate-ratio)) | |
2973 | ((symbolp vc-annotate-display-mode) ; One of the auto-scaling modes | |
2974 | (cond ((eq vc-annotate-display-mode 'scale) | |
2975 | (vc-annotate-display-autoscale)) | |
2976 | ((eq vc-annotate-display-mode 'fullscale) | |
2977 | (vc-annotate-display-autoscale t)) | |
2978 | (t (error "No such display mode: %s" | |
2979 | vc-annotate-display-mode)))) | |
2980 | ((numberp vc-annotate-display-mode) ; A fixed number of days lookback | |
2981 | (vc-annotate-display-default | |
2982 | (/ vc-annotate-display-mode (vc-annotate-car-last-cons | |
2983 | vc-annotate-color-map)))) | |
2984 | (t (error "Error in display mode select")))) | |
0e362f54 GM |
2985 | |
2986 | ;;;; (defun vc-BACKEND-annotate-command (file buffer) ...) | |
2987 | ;;;; Execute "annotate" on FILE by using `call-process' and insert | |
2988 | ;;;; the contents in BUFFER. | |
2989 | ||
7d2d9482 | 2990 | ;;;###autoload |
afe35502 | 2991 | (defun vc-annotate (prefix) |
1cec418c AS |
2992 | "Display the edit history of the current file using colours. |
2993 | ||
2994 | This command creates a buffer that shows, for each line of the current | |
2995 | file, when it was last edited and by whom. Additionally, colours are | |
2996 | used to show the age of each line--blue means oldest, red means | |
2997 | youngest, and intermediate colours indicate intermediate ages. By | |
2998 | default, the time scale stretches back one year into the past; | |
2999 | everything that is older than that is shown in blue. | |
3000 | ||
3001 | With a prefix argument, this command asks two questions in the | |
3002 | minibuffer. First, you may enter a version number; then the buffer | |
3003 | displays and annotates that version instead of the current version | |
eb407e67 | 3004 | \(type RET in the minibuffer to leave that default unchanged). Then, |
1cec418c AS |
3005 | you are prompted for a stretch factor for the time scale. This makes |
3006 | the color range cover a time span longer or shorter than the default | |
3007 | of one year. For example, a factor of 0.1 means that the range from | |
3008 | red to blue stands for the past 36 days only, and everything that is | |
3009 | older than that is shown in blue. | |
3010 | ||
3011 | Customization variables: | |
7d2d9482 RS |
3012 | |
3013 | `vc-annotate-menu-elements' customizes the menu elements of the | |
3014 | mode-specific menu. `vc-annotate-color-map' and | |
3015 | `vc-annotate-very-old-color' defines the mapping of time to | |
3016 | colors. `vc-annotate-background' specifies the background color." | |
afe35502 | 3017 | (interactive "P") |
b6909007 | 3018 | (vc-ensure-vc-buffer) |
08eab195 | 3019 | (let* ((temp-buffer-name (concat "*Annotate " (buffer-name) "*")) |
75665141 | 3020 | (temp-buffer-show-function 'vc-annotate-display-select) |
08eab195 AS |
3021 | (rev (vc-workfile-version (buffer-file-name))) |
3022 | (vc-annotate-version | |
3023 | (if prefix (read-string | |
3024 | (format "Annotate from version: (default %s) " rev) | |
3025 | nil nil rev) | |
75665141 AS |
3026 | rev))) |
3027 | (if prefix | |
3028 | (setq vc-annotate-display-mode | |
3029 | (float (string-to-number | |
3030 | (read-string "Annotate span days: (default 20) " | |
3031 | nil nil "20"))))) | |
3032 | (setq vc-annotate-backend (vc-backend (buffer-file-name))) | |
afe35502 | 3033 | (message "Annotating...") |
099bd78a SM |
3034 | (if (not (vc-find-backend-function vc-annotate-backend 'annotate-command)) |
3035 | (error "Sorry, annotating is not implemented for %s" | |
3036 | vc-annotate-backend)) | |
46e33aee | 3037 | (with-output-to-temp-buffer temp-buffer-name |
0e362f54 GM |
3038 | (vc-call-backend vc-annotate-backend 'annotate-command |
3039 | (file-name-nondirectory (buffer-file-name)) | |
afe35502 AS |
3040 | (get-buffer temp-buffer-name) |
3041 | vc-annotate-version)) | |
0e362f54 GM |
3042 | ;; Don't use the temp-buffer-name until the buffer is created |
3043 | ;; (only after `with-output-to-temp-buffer'.) | |
6f41eeb5 | 3044 | (setq vc-annotate-buffers |
0e362f54 | 3045 | (append vc-annotate-buffers |
08eab195 AS |
3046 | (list (cons (get-buffer temp-buffer-name) vc-annotate-backend)))) |
3047 | (message "Annotating... done"))) | |
7d2d9482 | 3048 | |
f70419a8 RS |
3049 | (defun vc-annotate-car-last-cons (a-list) |
3050 | "Return car of last cons in association list A-LIST." | |
3051 | (if (not (eq nil (cdr a-list))) | |
3052 | (vc-annotate-car-last-cons (cdr a-list)) | |
3053 | (car (car a-list)))) | |
3054 | ||
3055 | (defun vc-annotate-time-span (a-list span &optional quantize) | |
6f41eeb5 | 3056 | "Apply factor SPAN to the time-span of association list A-LIST. |
0e362f54 GM |
3057 | Return the new alist. |
3058 | Optionally quantize to the factor of QUANTIZE." | |
7d2d9482 | 3059 | ;; Apply span to each car of every cons |
0e362f54 | 3060 | (if (not (eq nil a-list)) |
f70419a8 RS |
3061 | (append (list (cons (* (car (car a-list)) span) |
3062 | (cdr (car a-list)))) | |
0e362f54 GM |
3063 | (vc-annotate-time-span (nthcdr (or quantize ; optional |
3064 | 1) ; Default to cdr | |
f70419a8 RS |
3065 | a-list) span quantize)))) |
3066 | ||
3067 | (defun vc-annotate-compcar (threshold a-list) | |
0e362f54 GM |
3068 | "Test successive cons cells of association list A-LIST against THRESHOLD. |
3069 | Return the first cons cell which car is not less than THRESHOLD, | |
3070 | nil otherwise" | |
f70419a8 RS |
3071 | (let ((i 1) |
3072 | (tmp-cons (car a-list))) | |
3073 | (while (and tmp-cons (< (car tmp-cons) threshold)) | |
3074 | (setq tmp-cons (car (nthcdr i a-list))) | |
3075 | (setq i (+ i 1))) | |
3076 | tmp-cons)) ; Return the appropriate value | |
3077 | ||
75665141 AS |
3078 | (defun vc-annotate-convert-time (time) |
3079 | "Convert high/low times, as returned by `current-time' and | |
3080 | `encode-time', to a single floating point value in units of days. | |
3081 | TIME is list, only the first two elements of TIME are considered, | |
3082 | comprising the high 16 and low 16 bits of the number of seconds since | |
3083 | Jan 1, 1970." | |
3084 | (/ (+ (* (float (car time)) (lsh 1 16)) (cadr time)) 24 3600)) | |
3085 | ||
3086 | (defun vc-annotate-difference (&optional offset) | |
3087 | "Calculate the difference, in days, from the current time and the | |
3088 | time returned from the backend function annotate-time. If OFFSET is | |
3089 | set, use it as the time base instead of the current time." | |
3090 | (let ((next-time (vc-call-backend vc-annotate-backend 'annotate-time))) | |
3091 | (if next-time | |
3092 | (- (or offset | |
3093 | (vc-call-backend vc-annotate-backend 'annotate-current-time)) | |
3094 | next-time)))) | |
3095 | ||
3096 | (defun vc-default-annotate-current-time (backend) | |
3097 | "Return the current time, encoded as fractional days." | |
3098 | (vc-annotate-convert-time (current-time))) | |
3099 | ||
3100 | (defun vc-annotate-display (&optional color-map offset) | |
3101 | "Do the VC-Annotate display in BUFFER using COLOR-MAP, and time | |
3102 | offset OFFSET (defaults to the present time). You probably want | |
3103 | `vc-annotate-select' instead, after setting | |
3104 | `vc-annotate-display-mode'" | |
3105 | (save-excursion | |
0e362f54 GM |
3106 | (goto-char (point-min)) ; Position at the top of the buffer. |
3107 | ;; Delete old overlays | |
3108 | (mapcar | |
3109 | (lambda (overlay) | |
3110 | (if (overlay-get overlay 'vc-annotation) | |
3111 | (delete-overlay overlay))) | |
3112 | (overlays-in (point-min) (point-max))) | |
3113 | (goto-char (point-min)) ; Position at the top of the buffer. | |
75665141 AS |
3114 | (let (difference) |
3115 | (while (setq difference (vc-annotate-difference offset)) | |
0e362f54 GM |
3116 | (let* |
3117 | ((color (or (vc-annotate-compcar | |
3118 | difference (or color-map vc-annotate-color-map)) | |
3119 | (cons nil vc-annotate-very-old-color))) | |
3120 | ;; substring from index 1 to remove any leading `#' in the name | |
3121 | (face-name (concat "vc-annotate-face-" (substring (cdr color) 1))) | |
3122 | ;; Make the face if not done. | |
3123 | (face (or (intern-soft face-name) | |
3124 | (let ((tmp-face (make-face (intern face-name)))) | |
3125 | (set-face-foreground tmp-face (cdr color)) | |
3126 | (if vc-annotate-background | |
75665141 AS |
3127 | (set-face-background tmp-face |
3128 | vc-annotate-background)) | |
0e362f54 GM |
3129 | tmp-face))) ; Return the face |
3130 | (point (point)) | |
3131 | overlay) | |
f70419a8 | 3132 | (forward-line 1) |
05dad1e6 AS |
3133 | (setq overlay (make-overlay point (point))) |
3134 | (overlay-put overlay 'face face) | |
75665141 | 3135 | (overlay-put overlay 'vc-annotation t)))))) |
7d2d9482 | 3136 | \f |
c6d4f628 | 3137 | ;; Collect back-end-dependent stuff here |
594722a8 | 3138 | |
0e362f54 | 3139 | (defalias 'vc-default-logentry-check 'ignore) |
594722a8 | 3140 | |
594722a8 ER |
3141 | (defun vc-check-headers () |
3142 | "Check if the current file has any headers in it." | |
3143 | (interactive) | |
0e362f54 | 3144 | (vc-call-backend (vc-backend buffer-file-name) 'check-headers)) |
594722a8 | 3145 | |
aae91380 AS |
3146 | (defun vc-default-check-headers (backend) |
3147 | "Default implementation of check-headers; always returns nil." | |
3148 | nil) | |
3149 | ||
594722a8 ER |
3150 | ;; Back-end-dependent stuff ends here. |
3151 | ||
3152 | ;; Set up key bindings for use while editing log messages | |
3153 | ||
099bd78a | 3154 | (define-derived-mode vc-log-mode text-mode "VC-Log" |
0e362f54 | 3155 | "Major mode for editing VC log entries. |
594722a8 ER |
3156 | These bindings are added to the global keymap when you enter this mode: |
3157 | \\[vc-next-action] perform next logical version-control operation on current file | |
0e362f54 | 3158 | \\[vc-register] register current file |
594722a8 ER |
3159 | \\[vc-toggle-read-only] like next-action, but won't register files |
3160 | \\[vc-insert-headers] insert version-control headers in current file | |
3161 | \\[vc-print-log] display change history of current file | |
3162 | \\[vc-revert-buffer] revert buffer to latest version | |
3163 | \\[vc-cancel-version] undo latest checkin | |
3164 | \\[vc-diff] show diffs between file versions | |
f1818994 | 3165 | \\[vc-version-other-window] visit old version in another window |
594722a8 | 3166 | \\[vc-directory] show all files locked by any user in or below . |
0e362f54 | 3167 | \\[vc-annotate] colorful display of the cvs annotate command |
594722a8 ER |
3168 | \\[vc-update-change-log] add change log entry from recent checkins |
3169 | ||
3170 | While you are entering a change log message for a version, the following | |
3171 | additional bindings will be in effect. | |
3172 | ||
3173 | \\[vc-finish-logentry] proceed with check in, ending log message entry | |
3174 | ||
3175 | Whenever you do a checkin, your log comment is added to a ring of | |
3176 | saved comments. These can be recalled as follows: | |
3177 | ||
3178 | \\[vc-next-comment] replace region with next message in comment ring | |
3179 | \\[vc-previous-comment] replace region with previous message in comment ring | |
8c0aaf40 ER |
3180 | \\[vc-comment-search-reverse] search backward for regexp in the comment ring |
3181 | \\[vc-comment-search-forward] search backward for regexp in the comment ring | |
594722a8 | 3182 | |
0e362f54 GM |
3183 | Entry to the change-log submode calls the value of `text-mode-hook', then |
3184 | the value of `vc-log-mode-hook'. | |
594722a8 ER |
3185 | |
3186 | Global user options: | |
0e362f54 | 3187 | `vc-initial-comment' If non-nil, require user to enter a change |
594722a8 ER |
3188 | comment upon first checkin of the file. |
3189 | ||
0e362f54 | 3190 | `vc-keep-workfiles' Non-nil value prevents workfiles from being |
594722a8 ER |
3191 | deleted when changes are checked in |
3192 | ||
c96da2b0 | 3193 | `vc-suppress-confirm' Suppresses some confirmation prompts. |
594722a8 | 3194 | |
0e362f54 | 3195 | vc-BACKEND-header Which keywords to insert when adding headers |
594722a8 | 3196 | with \\[vc-insert-headers]. Defaults to |
0e362f54 | 3197 | '(\"\%\W\%\") under SCCS, '(\"\$Id\$\") under |
80688f5c | 3198 | RCS and CVS. |
594722a8 | 3199 | |
0e362f54 | 3200 | `vc-static-header-alist' By default, version headers inserted in C files |
594722a8 | 3201 | get stuffed in a static string area so that |
80688f5c RS |
3202 | ident(RCS/CVS) or what(SCCS) can see them in |
3203 | the compiled object code. You can override | |
3204 | this by setting this variable to nil, or change | |
594722a8 ER |
3205 | the header template by changing it. |
3206 | ||
0e362f54 | 3207 | `vc-command-messages' if non-nil, display run messages from the |
594722a8 ER |
3208 | actual version-control utilities (this is |
3209 | intended primarily for people hacking vc | |
099bd78a SM |
3210 | itself)." |
3211 | (make-local-variable 'vc-comment-ring-index)) | |
0e362f54 GM |
3212 | |
3213 | (defun vc-log-edit (file) | |
099bd78a SM |
3214 | "Set up `log-edit' for use with VC on FILE. |
3215 | If `log-edit' is not available, resort to `vc-log-mode'." | |
3216 | (setq default-directory | |
3217 | (if file (file-name-directory file) | |
3218 | (with-current-buffer vc-parent-buffer default-directory))) | |
3219 | (if (fboundp 'log-edit) | |
3220 | (log-edit 'vc-finish-logentry nil | |
3221 | (if file `(lambda () ',(list (file-name-nondirectory file))) | |
3222 | ;; If FILE is nil, we were called from vc-dired. | |
3223 | (lambda () | |
3224 | (with-current-buffer vc-parent-buffer | |
3225 | (dired-get-marked-files t))))) | |
3226 | (vc-log-mode)) | |
0e362f54 GM |
3227 | (set (make-local-variable 'vc-log-file) file) |
3228 | (make-local-variable 'vc-log-version) | |
099bd78a | 3229 | (set-buffer-modified-p nil) |
0e362f54 | 3230 | (setq buffer-file-name nil)) |
594722a8 | 3231 | |
ec402ad4 | 3232 | ;; These things should probably be generally available |
594722a8 | 3233 | |
2f119435 AS |
3234 | (defun vc-file-tree-walk (dirname func &rest args) |
3235 | "Walk recursively through DIRNAME. | |
0e362f54 | 3236 | Invoke FUNC f ARGS on each VC-managed file f underneath it." |
2f119435 AS |
3237 | (vc-file-tree-walk-internal (expand-file-name dirname) func args) |
3238 | (message "Traversing directory %s...done" dirname)) | |
02da6253 PE |
3239 | |
3240 | (defun vc-file-tree-walk-internal (file func args) | |
3241 | (if (not (file-directory-p file)) | |
0e362f54 | 3242 | (if (vc-backend file) (apply func file args)) |
993a1a44 | 3243 | (message "Traversing directory %s..." (abbreviate-file-name file)) |
02da6253 PE |
3244 | (let ((dir (file-name-as-directory file))) |
3245 | (mapcar | |
0e362f54 GM |
3246 | (lambda (f) (or |
3247 | (string-equal f ".") | |
3248 | (string-equal f "..") | |
3249 | (member f vc-directory-exclusion-list) | |
3250 | (let ((dirf (expand-file-name f dir))) | |
3251 | (or | |
3252 | (file-symlink-p dirf);; Avoid possible loops | |
3253 | (vc-file-tree-walk-internal dirf func args))))) | |
02da6253 | 3254 | (directory-files dir))))) |
594722a8 ER |
3255 | |
3256 | (provide 'vc) | |
3257 | ||
ec402ad4 SM |
3258 | ;; DEVELOPER'S NOTES ON CONCURRENCY PROBLEMS IN THIS CODE |
3259 | ;; | |
ec402ad4 SM |
3260 | ;; These may be useful to anyone who has to debug or extend the package. |
3261 | ;; (Note that this information corresponds to versions 5.x. Some of it | |
3262 | ;; might have been invalidated by the additions to support branching | |
3263 | ;; and RCS keyword lookup. AS, 1995/03/24) | |
3264 | ;; | |
3265 | ;; A fundamental problem in VC is that there are time windows between | |
3266 | ;; vc-next-action's computations of the file's version-control state and | |
3267 | ;; the actions that change it. This is a window open to lossage in a | |
3268 | ;; multi-user environment; someone else could nip in and change the state | |
3269 | ;; of the master during it. | |
3270 | ;; | |
3271 | ;; The performance problem is that rlog/prs calls are very expensive; we want | |
3272 | ;; to avoid them as much as possible. | |
3273 | ;; | |
3274 | ;; ANALYSIS: | |
3275 | ;; | |
3276 | ;; The performance problem, it turns out, simplifies in practice to the | |
3277 | ;; problem of making vc-state fast. The two other functions that call | |
3278 | ;; prs/rlog will not be so commonly used that the slowdown is a problem; one | |
3279 | ;; makes snapshots, the other deletes the calling user's last change in the | |
3280 | ;; master. | |
3281 | ;; | |
3282 | ;; The race condition implies that we have to either (a) lock the master | |
3283 | ;; during the entire execution of vc-next-action, or (b) detect and | |
3284 | ;; recover from errors resulting from dispatch on an out-of-date state. | |
3285 | ;; | |
3286 | ;; Alternative (a) appears to be infeasible. The problem is that we can't | |
3287 | ;; guarantee that the lock will ever be removed. Suppose a user starts a | |
3288 | ;; checkin, the change message buffer pops up, and the user, having wandered | |
3289 | ;; off to do something else, simply forgets about it? | |
3290 | ;; | |
3291 | ;; Alternative (b), on the other hand, works well with a cheap way to speed up | |
3292 | ;; vc-state. Usually, if a file is registered, we can read its locked/ | |
3293 | ;; unlocked state and its current owner from its permissions. | |
3294 | ;; | |
3295 | ;; This shortcut will fail if someone has manually changed the workfile's | |
3296 | ;; permissions; also if developers are munging the workfile in several | |
3297 | ;; directories, with symlinks to a master (in this latter case, the | |
3298 | ;; permissions shortcut will fail to detect a lock asserted from another | |
3299 | ;; directory). | |
3300 | ;; | |
3301 | ;; Note that these cases correspond exactly to the errors which could happen | |
3302 | ;; because of a competing checkin/checkout race in between two instances of | |
3303 | ;; vc-next-action. | |
3304 | ;; | |
3305 | ;; For VC's purposes, a workfile/master pair may have the following states: | |
3306 | ;; | |
3307 | ;; A. Unregistered. There is a workfile, there is no master. | |
3308 | ;; | |
3309 | ;; B. Registered and not locked by anyone. | |
3310 | ;; | |
3311 | ;; C. Locked by calling user and unchanged. | |
3312 | ;; | |
3313 | ;; D. Locked by the calling user and changed. | |
3314 | ;; | |
3315 | ;; E. Locked by someone other than the calling user. | |
3316 | ;; | |
3317 | ;; This makes for 25 states and 20 error conditions. Here's the matrix: | |
3318 | ;; | |
3319 | ;; VC's idea of state | |
3320 | ;; | | |
3321 | ;; V Actual state RCS action SCCS action Effect | |
3322 | ;; A B C D E | |
3323 | ;; A . 1 2 3 4 ci -u -t- admin -fb -i<file> initial admin | |
3324 | ;; B 5 . 6 7 8 co -l get -e checkout | |
3325 | ;; C 9 10 . 11 12 co -u unget; get revert | |
3326 | ;; D 13 14 15 . 16 ci -u -m<comment> delta -y<comment>; get checkin | |
3327 | ;; E 17 18 19 20 . rcs -u -M -l unget -n ; get -g steal lock | |
3328 | ;; | |
3329 | ;; All commands take the master file name as a last argument (not shown). | |
3330 | ;; | |
3331 | ;; In the discussion below, a "self-race" is a pathological situation in | |
3332 | ;; which VC operations are being attempted simultaneously by two or more | |
3333 | ;; Emacsen running under the same username. | |
3334 | ;; | |
3335 | ;; The vc-next-action code has the following windows: | |
3336 | ;; | |
3337 | ;; Window P: | |
3338 | ;; Between the check for existence of a master file and the call to | |
3339 | ;; admin/checkin in vc-buffer-admin (apparent state A). This window may | |
3340 | ;; never close if the initial-comment feature is on. | |
3341 | ;; | |
3342 | ;; Window Q: | |
3343 | ;; Between the call to vc-workfile-unchanged-p in and the immediately | |
3344 | ;; following revert (apparent state C). | |
3345 | ;; | |
3346 | ;; Window R: | |
3347 | ;; Between the call to vc-workfile-unchanged-p in and the following | |
3348 | ;; checkin (apparent state D). This window may never close. | |
3349 | ;; | |
3350 | ;; Window S: | |
3351 | ;; Between the unlock and the immediately following checkout during a | |
3352 | ;; revert operation (apparent state C). Included in window Q. | |
3353 | ;; | |
3354 | ;; Window T: | |
3355 | ;; Between vc-state and the following checkout (apparent state B). | |
3356 | ;; | |
3357 | ;; Window U: | |
3358 | ;; Between vc-state and the following revert (apparent state C). | |
3359 | ;; Includes windows Q and S. | |
3360 | ;; | |
3361 | ;; Window V: | |
3362 | ;; Between vc-state and the following checkin (apparent state | |
3363 | ;; D). This window may never be closed if the user fails to complete the | |
3364 | ;; checkin message. Includes window R. | |
3365 | ;; | |
3366 | ;; Window W: | |
3367 | ;; Between vc-state and the following steal-lock (apparent | |
3368 | ;; state E). This window may never close if the user fails to complete | |
3369 | ;; the steal-lock message. Includes window X. | |
3370 | ;; | |
3371 | ;; Window X: | |
3372 | ;; Between the unlock and the immediately following re-lock during a | |
3373 | ;; steal-lock operation (apparent state E). This window may never close | |
3374 | ;; if the user fails to complete the steal-lock message. | |
3375 | ;; | |
3376 | ;; Errors: | |
3377 | ;; | |
3378 | ;; Apparent state A --- | |
3379 | ;; | |
3380 | ;; 1. File looked unregistered but is actually registered and not locked. | |
3381 | ;; | |
3382 | ;; Potential cause: someone else's admin during window P, with | |
3383 | ;; caller's admin happening before their checkout. | |
3384 | ;; | |
3385 | ;; RCS: Prior to version 5.6.4, ci fails with message | |
3386 | ;; "no lock set by <user>". From 5.6.4 onwards, VC uses the new | |
3387 | ;; ci -i option and the message is "<file>,v: already exists". | |
3388 | ;; SCCS: admin will fail with error (ad19). | |
3389 | ;; | |
3390 | ;; We can let these errors be passed up to the user. | |
3391 | ;; | |
3392 | ;; 2. File looked unregistered but is actually locked by caller, unchanged. | |
3393 | ;; | |
3394 | ;; Potential cause: self-race during window P. | |
3395 | ;; | |
3396 | ;; RCS: Prior to version 5.6.4, reverts the file to the last saved | |
3397 | ;; version and unlocks it. From 5.6.4 onwards, VC uses the new | |
3398 | ;; ci -i option, failing with message "<file>,v: already exists". | |
3399 | ;; SCCS: will fail with error (ad19). | |
3400 | ;; | |
3401 | ;; Either of these consequences is acceptable. | |
3402 | ;; | |
3403 | ;; 3. File looked unregistered but is actually locked by caller, changed. | |
3404 | ;; | |
3405 | ;; Potential cause: self-race during window P. | |
3406 | ;; | |
3407 | ;; RCS: Prior to version 5.6.4, VC registers the caller's workfile as | |
3408 | ;; a delta with a null change comment (the -t- switch will be | |
3409 | ;; ignored). From 5.6.4 onwards, VC uses the new ci -i option, | |
3410 | ;; failing with message "<file>,v: already exists". | |
3411 | ;; SCCS: will fail with error (ad19). | |
3412 | ;; | |
3413 | ;; 4. File looked unregistered but is locked by someone else. | |
0e362f54 | 3414 | ;;; |
ec402ad4 SM |
3415 | ;; Potential cause: someone else's admin during window P, with |
3416 | ;; caller's admin happening *after* their checkout. | |
3417 | ;; | |
3418 | ;; RCS: Prior to version 5.6.4, ci fails with a | |
3419 | ;; "no lock set by <user>" message. From 5.6.4 onwards, | |
3420 | ;; VC uses the new ci -i option, failing with message | |
3421 | ;; "<file>,v: already exists". | |
3422 | ;; SCCS: will fail with error (ad19). | |
3423 | ;; | |
3424 | ;; We can let these errors be passed up to the user. | |
3425 | ;; | |
3426 | ;; Apparent state B --- | |
3427 | ;; | |
3428 | ;; 5. File looked registered and not locked, but is actually unregistered. | |
3429 | ;; | |
3430 | ;; Potential cause: master file got nuked during window P. | |
3431 | ;; | |
3432 | ;; RCS: will fail with "RCS/<file>: No such file or directory" | |
3433 | ;; SCCS: will fail with error ut4. | |
3434 | ;; | |
3435 | ;; We can let these errors be passed up to the user. | |
3436 | ;; | |
3437 | ;; 6. File looked registered and not locked, but is actually locked by the | |
3438 | ;; calling user and unchanged. | |
3439 | ;; | |
3440 | ;; Potential cause: self-race during window T. | |
3441 | ;; | |
3442 | ;; RCS: in the same directory as the previous workfile, co -l will fail | |
3443 | ;; with "co error: writable foo exists; checkout aborted". In any other | |
3444 | ;; directory, checkout will succeed. | |
3445 | ;; SCCS: will fail with ge17. | |
3446 | ;; | |
3447 | ;; Either of these consequences is acceptable. | |
3448 | ;; | |
3449 | ;; 7. File looked registered and not locked, but is actually locked by the | |
3450 | ;; calling user and changed. | |
3451 | ;; | |
3452 | ;; As case 6. | |
3453 | ;; | |
3454 | ;; 8. File looked registered and not locked, but is actually locked by another | |
3455 | ;; user. | |
3456 | ;; | |
3457 | ;; Potential cause: someone else checks it out during window T. | |
3458 | ;; | |
3459 | ;; RCS: co error: revision 1.3 already locked by <user> | |
3460 | ;; SCCS: fails with ge4 (in directory) or ut7 (outside it). | |
3461 | ;; | |
3462 | ;; We can let these errors be passed up to the user. | |
3463 | ;; | |
3464 | ;; Apparent state C --- | |
3465 | ;; | |
3466 | ;; 9. File looks locked by calling user and unchanged, but is unregistered. | |
3467 | ;; | |
3468 | ;; As case 5. | |
3469 | ;; | |
3470 | ;; 10. File looks locked by calling user and unchanged, but is actually not | |
3471 | ;; locked. | |
3472 | ;; | |
3473 | ;; Potential cause: a self-race in window U, or by the revert's | |
3474 | ;; landing during window X of some other user's steal-lock or window S | |
3475 | ;; of another user's revert. | |
3476 | ;; | |
3477 | ;; RCS: succeeds, refreshing the file from the identical version in | |
3478 | ;; the master. | |
3479 | ;; SCCS: fails with error ut4 (p file nonexistent). | |
3480 | ;; | |
3481 | ;; Either of these consequences is acceptable. | |
3482 | ;; | |
3483 | ;; 11. File is locked by calling user. It looks unchanged, but is actually | |
3484 | ;; changed. | |
3485 | ;; | |
3486 | ;; Potential cause: the file would have to be touched by a self-race | |
3487 | ;; during window Q. | |
3488 | ;; | |
3489 | ;; The revert will succeed, removing whatever changes came with | |
3490 | ;; the touch. It is theoretically possible that work could be lost. | |
3491 | ;; | |
3492 | ;; 12. File looks like it's locked by the calling user and unchanged, but | |
3493 | ;; it's actually locked by someone else. | |
3494 | ;; | |
3495 | ;; Potential cause: a steal-lock in window V. | |
3496 | ;; | |
3497 | ;; RCS: co error: revision <rev> locked by <user>; use co -r or rcs -u | |
3498 | ;; SCCS: fails with error un2 | |
3499 | ;; | |
3500 | ;; We can pass these errors up to the user. | |
3501 | ;; | |
3502 | ;; Apparent state D --- | |
3503 | ;; | |
3504 | ;; 13. File looks like it's locked by the calling user and changed, but it's | |
3505 | ;; actually unregistered. | |
3506 | ;; | |
3507 | ;; Potential cause: master file got nuked during window P. | |
3508 | ;; | |
3509 | ;; RCS: Prior to version 5.6.4, checks in the user's version as an | |
3510 | ;; initial delta. From 5.6.4 onwards, VC uses the new ci -j | |
3511 | ;; option, failing with message "no such file or directory". | |
3512 | ;; SCCS: will fail with error ut4. | |
3513 | ;; | |
3514 | ;; This case is kind of nasty. Under RCS prior to version 5.6.4, | |
3515 | ;; VC may fail to detect the loss of previous version information. | |
3516 | ;; | |
3517 | ;; 14. File looks like it's locked by the calling user and changed, but it's | |
3518 | ;; actually unlocked. | |
3519 | ;; | |
3520 | ;; Potential cause: self-race in window V, or the checkin happening | |
3521 | ;; during the window X of someone else's steal-lock or window S of | |
3522 | ;; someone else's revert. | |
3523 | ;; | |
3524 | ;; RCS: ci will fail with "no lock set by <user>". | |
3525 | ;; SCCS: delta will fail with error ut4. | |
3526 | ;; | |
3527 | ;; 15. File looks like it's locked by the calling user and changed, but it's | |
3528 | ;; actually locked by the calling user and unchanged. | |
3529 | ;; | |
3530 | ;; Potential cause: another self-race --- a whole checkin/checkout | |
3531 | ;; sequence by the calling user would have to land in window R. | |
3532 | ;; | |
3533 | ;; SCCS: checks in a redundant delta and leaves the file unlocked as usual. | |
3534 | ;; RCS: reverts to the file state as of the second user's checkin, leaving | |
3535 | ;; the file unlocked. | |
3536 | ;; | |
3537 | ;; It is theoretically possible that work could be lost under RCS. | |
3538 | ;; | |
3539 | ;; 16. File looks like it's locked by the calling user and changed, but it's | |
3540 | ;; actually locked by a different user. | |
3541 | ;; | |
3542 | ;; RCS: ci error: no lock set by <user> | |
3543 | ;; SCCS: unget will fail with error un2 | |
3544 | ;; | |
3545 | ;; We can pass these errors up to the user. | |
3546 | ;; | |
3547 | ;; Apparent state E --- | |
3548 | ;; | |
3549 | ;; 17. File looks like it's locked by some other user, but it's actually | |
3550 | ;; unregistered. | |
3551 | ;; | |
3552 | ;; As case 13. | |
3553 | ;; | |
3554 | ;; 18. File looks like it's locked by some other user, but it's actually | |
3555 | ;; unlocked. | |
3556 | ;; | |
3557 | ;; Potential cause: someone released a lock during window W. | |
3558 | ;; | |
3559 | ;; RCS: The calling user will get the lock on the file. | |
3560 | ;; SCCS: unget -n will fail with cm4. | |
3561 | ;; | |
3562 | ;; Either of these consequences will be OK. | |
3563 | ;; | |
3564 | ;; 19. File looks like it's locked by some other user, but it's actually | |
3565 | ;; locked by the calling user and unchanged. | |
3566 | ;; | |
3567 | ;; Potential cause: the other user relinquishing a lock followed by | |
3568 | ;; a self-race, both in window W. | |
3569 | ;; | |
3570 | ;; Under both RCS and SCCS, both unlock and lock will succeed, making | |
3571 | ;; the sequence a no-op. | |
3572 | ;; | |
3573 | ;; 20. File looks like it's locked by some other user, but it's actually | |
3574 | ;; locked by the calling user and changed. | |
3575 | ;; | |
3576 | ;; As case 19. | |
3577 | ;; | |
3578 | ;; PROBLEM CASES: | |
3579 | ;; | |
3580 | ;; In order of decreasing severity: | |
3581 | ;; | |
3582 | ;; Cases 11 and 15 are the only ones that potentially lose work. | |
3583 | ;; They would require a self-race for this to happen. | |
3584 | ;; | |
3585 | ;; Case 13 in RCS loses information about previous deltas, retaining | |
3586 | ;; only the information in the current workfile. This can only happen | |
3587 | ;; if the master file gets nuked in window P. | |
3588 | ;; | |
3589 | ;; Case 3 in RCS and case 15 under SCCS insert a redundant delta with | |
3590 | ;; no change comment in the master. This would require a self-race in | |
3591 | ;; window P or R respectively. | |
3592 | ;; | |
3593 | ;; Cases 2, 10, 19 and 20 do extra work, but make no changes. | |
3594 | ;; | |
3595 | ;; Unfortunately, it appears to me that no recovery is possible in these | |
3596 | ;; cases. They don't yield error messages, so there's no way to tell that | |
3597 | ;; a race condition has occurred. | |
3598 | ;; | |
3599 | ;; All other cases don't change either the workfile or the master, and | |
3600 | ;; trigger command errors which the user will see. | |
3601 | ;; | |
3602 | ;; Thus, there is no explicit recovery code. | |
594722a8 ER |
3603 | |
3604 | ;;; vc.el ends here |