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aae56ea7 | 1 | ;;; vc-hooks.el --- resident support for version-control |
594722a8 | 2 | |
c90f2757 | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, |
409cc4a3 | 4 | ;; 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
594722a8 | 5 | |
0e0d9831 GM |
6 | ;; Author: FSF (see vc.el for full credits) |
7 | ;; Maintainer: Andre Spiegel <spiegel@gnu.org> | |
594722a8 ER |
8 | |
9 | ;; This file is part of GNU Emacs. | |
10 | ||
eb3fa2cf | 11 | ;; GNU Emacs is free software: you can redistribute it and/or modify |
594722a8 | 12 | ;; it under the terms of the GNU General Public License as published by |
eb3fa2cf GM |
13 | ;; the Free Software Foundation, either version 3 of the License, or |
14 | ;; (at your option) any later version. | |
594722a8 ER |
15 | |
16 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
17 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
7d56ad0d | 19 | ;; GNU General Public License for more details. |
594722a8 ER |
20 | |
21 | ;; You should have received a copy of the GNU General Public License | |
eb3fa2cf | 22 | ;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>. |
594722a8 ER |
23 | |
24 | ;;; Commentary: | |
25 | ||
0e0d9831 GM |
26 | ;; This is the always-loaded portion of VC. It takes care of |
27 | ;; VC-related activities that are done when you visit a file, so that | |
28 | ;; vc.el itself is loaded only when you use a VC command. See the | |
29 | ;; commentary of vc.el. | |
594722a8 ER |
30 | |
31 | ;;; Code: | |
32 | ||
c3ce5e29 AS |
33 | (eval-when-compile |
34 | (require 'cl)) | |
099bd78a | 35 | |
e1c0c2d1 KH |
36 | ;; Customization Variables (the rest is in vc.el) |
37 | ||
e18cf2ee | 38 | (defvar vc-ignore-vc-files nil) |
5499f9dc | 39 | (make-obsolete-variable 'vc-ignore-vc-files |
329a656e JB |
40 | "set `vc-handled-backends' to nil to disable VC." |
41 | "21.1") | |
5499f9dc | 42 | |
e18cf2ee | 43 | (defvar vc-master-templates ()) |
0d2ce4ef JB |
44 | (make-obsolete-variable 'vc-master-templates |
45 | "to define master templates for a given BACKEND, use | |
5499f9dc | 46 | vc-BACKEND-master-templates. To enable or disable VC for a given |
329a656e JB |
47 | BACKEND, use `vc-handled-backends'." |
48 | "21.1") | |
5499f9dc | 49 | |
e18cf2ee | 50 | (defvar vc-header-alist ()) |
329a656e | 51 | (make-obsolete-variable 'vc-header-alist 'vc-BACKEND-header "21.1") |
0e0d9831 | 52 | |
456e749f SM |
53 | (defcustom vc-ignore-dir-regexp |
54 | ;; Stop SMB, automounter, AFS, and DFS host lookups. | |
55 | "\\`\\(?:[\\/][\\/]\\|/\\(?:net\\|afs\\|\\.\\\.\\.\\)/\\)\\'" | |
43621386 | 56 | "Regexp matching directory names that are not under VC's control. |
ce9f8ffb SM |
57 | The default regexp prevents fruitless and time-consuming attempts |
58 | to determine the VC status in directories in which filenames are | |
43621386 SM |
59 | interpreted as hostnames." |
60 | :type 'regexp | |
61 | :group 'vc) | |
ce9f8ffb | 62 | |
db86064f | 63 | (defcustom vc-handled-backends '(RCS CVS SVN SCCS Bzr Git Hg Mtn Arch) |
b1dc6d44 SM |
64 | ;; RCS, CVS, SVN and SCCS come first because they are per-dir |
65 | ;; rather than per-tree. RCS comes first because of the multibackend | |
66 | ;; support intended to use RCS for local commits (with a remote CVS server). | |
e5162bc1 | 67 | "List of version control backends for which VC will be used. |
0e0d9831 GM |
68 | Entries in this list will be tried in order to determine whether a |
69 | file is under that sort of version control. | |
70 | Removing an entry from the list prevents VC from being activated | |
71 | when visiting a file managed by that backend. | |
72 | An empty list disables VC altogether." | |
73 | :type '(repeat symbol) | |
dbd3d787 | 74 | :version "23.1" |
50bec091 | 75 | :group 'vc) |
31888047 | 76 | |
1f0bee0a | 77 | ;; Note: we don't actually have a darcs back end yet. |
db86064f | 78 | ;; Also, Meta-CVS (corresponsding to MCVS) is unsupported. |
527b313d SS |
79 | (defcustom vc-directory-exclusion-list '("SCCS" "RCS" "CVS" "MCVS" |
80 | ".svn" ".git" ".hg" ".bzr" | |
1f0bee0a | 81 | "_MTN" "_darcs" "{arch}") |
9c4b89d5 ER |
82 | "List of directory names to be ignored when walking directory trees." |
83 | :type '(repeat string) | |
84 | :group 'vc) | |
85 | ||
14b11401 | 86 | (defcustom vc-path nil |
e5162bc1 | 87 | "List of extra directories to search for version control commands." |
50bec091 KH |
88 | :type '(repeat directory) |
89 | :group 'vc) | |
e1c0c2d1 | 90 | |
50bec091 | 91 | (defcustom vc-make-backup-files nil |
e5162bc1 | 92 | "If non-nil, backups of registered files are made as with other files. |
50bec091 KH |
93 | If nil (the default), files covered by version control don't get backups." |
94 | :type 'boolean | |
8f383484 DL |
95 | :group 'vc |
96 | :group 'backup) | |
594722a8 | 97 | |
50bec091 | 98 | (defcustom vc-follow-symlinks 'ask |
e5162bc1 | 99 | "What to do if visiting a symbolic link to a file under version control. |
0e0d9831 GM |
100 | Editing such a file through the link bypasses the version control system, |
101 | which is dangerous and probably not what you want. | |
102 | ||
103 | If this variable is t, VC follows the link and visits the real file, | |
b8063212 AS |
104 | telling you about it in the echo area. If it is `ask', VC asks for |
105 | confirmation whether it should follow the link. If nil, the link is | |
50bec091 | 106 | visited and a warning displayed." |
0e0d9831 GM |
107 | :type '(choice (const :tag "Ask for confirmation" ask) |
108 | (const :tag "Visit link and warn" nil) | |
109 | (const :tag "Follow link" t)) | |
50bec091 | 110 | :group 'vc) |
b8063212 | 111 | |
50bec091 | 112 | (defcustom vc-display-status t |
e5162bc1 | 113 | "If non-nil, display revision number and lock status in modeline. |
50bec091 KH |
114 | Otherwise, not displayed." |
115 | :type 'boolean | |
116 | :group 'vc) | |
117 | ||
198d5c00 | 118 | |
50bec091 | 119 | (defcustom vc-consult-headers t |
e5162bc1 | 120 | "If non-nil, identify work files by searching for version headers." |
50bec091 KH |
121 | :type 'boolean |
122 | :group 'vc) | |
e1c0c2d1 | 123 | |
50bec091 | 124 | (defcustom vc-keep-workfiles t |
e5162bc1 | 125 | "If non-nil, don't delete working files after registering changes. |
e1c0c2d1 | 126 | If the back-end is CVS, workfiles are always kept, regardless of the |
50bec091 KH |
127 | value of this flag." |
128 | :type 'boolean | |
129 | :group 'vc) | |
e1c0c2d1 | 130 | |
50bec091 | 131 | (defcustom vc-mistrust-permissions nil |
e5162bc1 | 132 | "If non-nil, don't assume permissions/ownership track version-control status. |
0e0d9831 | 133 | If nil, do rely on the permissions. |
50bec091 KH |
134 | See also variable `vc-consult-headers'." |
135 | :type 'boolean | |
136 | :group 'vc) | |
e66eac08 AS |
137 | |
138 | (defun vc-mistrust-permissions (file) | |
0e0d9831 | 139 | "Internal access function to variable `vc-mistrust-permissions' for FILE." |
e66eac08 AS |
140 | (or (eq vc-mistrust-permissions 't) |
141 | (and vc-mistrust-permissions | |
0e0d9831 | 142 | (funcall vc-mistrust-permissions |
e66eac08 AS |
143 | (vc-backend-subdirectory-name file))))) |
144 | ||
113414a9 | 145 | (defcustom vc-stay-local t |
e5162bc1 | 146 | "Non-nil means use local operations when possible for remote repositories. |
113414a9 SM |
147 | This avoids slow queries over the network and instead uses heuristics |
148 | and past information to determine the current status of a file. | |
149 | ||
150 | The value can also be a regular expression or list of regular | |
151 | expressions to match against the host name of a repository; then VC | |
152 | only stays local for hosts that match it. Alternatively, the value | |
153 | can be a list of regular expressions where the first element is the | |
154 | symbol `except'; then VC always stays local except for hosts matched | |
155 | by these regular expressions." | |
156 | :type '(choice (const :tag "Always stay local" t) | |
157 | (const :tag "Don't stay local" nil) | |
158 | (list :format "\nExamine hostname and %v" :tag "Examine hostname ..." | |
159 | (set :format "%v" :inline t (const :format "%t" :tag "don't" except)) | |
160 | (regexp :format " stay local,\n%t: %v" :tag "if it matches") | |
161 | (repeat :format "%v%i\n" :inline t (regexp :tag "or")))) | |
bf247b6e | 162 | :version "22.1" |
113414a9 SM |
163 | :group 'vc) |
164 | ||
165 | (defun vc-stay-local-p (file) | |
166 | "Return non-nil if VC should stay local when handling FILE. | |
33e0847d TTN |
167 | This uses the `repository-hostname' backend operation. |
168 | If FILE is a list of files, return non-nil if any of them | |
169 | individually should stay local." | |
e4d26892 | 170 | (if (listp file) |
33e0847d | 171 | (delq nil (mapcar 'vc-stay-local-p file)) |
e4d26892 ER |
172 | (let* ((backend (vc-backend file)) |
173 | (sym (vc-make-backend-sym backend 'stay-local)) | |
174 | (stay-local (if (boundp sym) (symbol-value sym) t))) | |
175 | (if (eq stay-local t) (setq stay-local vc-stay-local)) | |
176 | (if (symbolp stay-local) stay-local | |
177 | (let ((dirname (if (file-directory-p file) | |
178 | (directory-file-name file) | |
179 | (file-name-directory file)))) | |
180 | (eq 'yes | |
181 | (or (vc-file-getprop dirname 'vc-stay-local-p) | |
182 | (vc-file-setprop | |
183 | dirname 'vc-stay-local-p | |
184 | (let ((hostname (vc-call-backend | |
185 | backend 'repository-hostname dirname))) | |
186 | (if (not hostname) | |
187 | 'no | |
188 | (let ((default t)) | |
189 | (if (eq (car-safe stay-local) 'except) | |
190 | (setq default nil stay-local (cdr stay-local))) | |
191 | (when (consp stay-local) | |
192 | (setq stay-local | |
193 | (mapconcat 'identity stay-local "\\|"))) | |
194 | (if (if (string-match stay-local hostname) | |
195 | default (not default)) | |
196 | 'yes 'no)))))))))))) | |
113414a9 | 197 | |
9bd06e95 | 198 | ;;; This is handled specially now. |
594722a8 | 199 | ;; Tell Emacs about this new kind of minor mode |
9bd06e95 | 200 | ;; (add-to-list 'minor-mode-alist '(vc-mode vc-mode)) |
594722a8 | 201 | |
7bc2b98b | 202 | (make-variable-buffer-local 'vc-mode) |
c43e436c | 203 | (put 'vc-mode 'permanent-local t) |
594722a8 | 204 | |
14fef9de SM |
205 | (defun vc-mode (&optional arg) |
206 | ;; Dummy function for C-h m | |
207 | "Version Control minor mode. | |
208 | This minor mode is automatically activated whenever you visit a file under | |
209 | control of one of the revision control systems in `vc-handled-backends'. | |
210 | VC commands are globally reachable under the prefix `\\[vc-prefix-map]': | |
211 | \\{vc-prefix-map}") | |
212 | ||
099bd78a | 213 | (defmacro vc-error-occurred (&rest body) |
becd6193 | 214 | `(condition-case nil (progn ,@body nil) (error t))) |
099bd78a | 215 | |
594722a8 | 216 | ;; We need a notion of per-file properties because the version |
f2ee4191 | 217 | ;; control state of a file is expensive to derive --- we compute |
0e0d9831 | 218 | ;; them when the file is initially found, keep them up to date |
f2ee4191 RS |
219 | ;; during any subsequent VC operations, and forget them when |
220 | ;; the buffer is killed. | |
594722a8 | 221 | |
becd6193 | 222 | (defvar vc-file-prop-obarray (make-vector 17 0) |
594722a8 ER |
223 | "Obarray for per-file properties.") |
224 | ||
099bd78a SM |
225 | (defvar vc-touched-properties nil) |
226 | ||
594722a8 | 227 | (defun vc-file-setprop (file property value) |
0e0d9831 | 228 | "Set per-file VC PROPERTY for FILE to VALUE." |
099bd78a SM |
229 | (if (and vc-touched-properties |
230 | (not (memq property vc-touched-properties))) | |
231 | (setq vc-touched-properties (append (list property) | |
232 | vc-touched-properties))) | |
594722a8 ER |
233 | (put (intern file vc-file-prop-obarray) property value)) |
234 | ||
235 | (defun vc-file-getprop (file property) | |
099bd78a | 236 | "Get per-file VC PROPERTY for FILE." |
594722a8 ER |
237 | (get (intern file vc-file-prop-obarray) property)) |
238 | ||
e1c0c2d1 | 239 | (defun vc-file-clearprops (file) |
0e0d9831 | 240 | "Clear all VC properties of FILE." |
e1c0c2d1 | 241 | (setplist (intern file vc-file-prop-obarray) nil)) |
f2ee4191 | 242 | |
0e0d9831 GM |
243 | \f |
244 | ;; We keep properties on each symbol naming a backend as follows: | |
245 | ;; * `vc-functions': an alist mapping vc-FUNCTION to vc-BACKEND-FUNCTION. | |
246 | ||
247 | (defun vc-make-backend-sym (backend sym) | |
248 | "Return BACKEND-specific version of VC symbol SYM." | |
249 | (intern (concat "vc-" (downcase (symbol-name backend)) | |
250 | "-" (symbol-name sym)))) | |
251 | ||
252 | (defun vc-find-backend-function (backend fun) | |
253 | "Return BACKEND-specific implementation of FUN. | |
f8b72742 | 254 | If there is no such implementation, return the default implementation; |
0e0d9831 GM |
255 | if that doesn't exist either, return nil." |
256 | (let ((f (vc-make-backend-sym backend fun))) | |
257 | (if (fboundp f) f | |
258 | ;; Load vc-BACKEND.el if needed. | |
259 | (require (intern (concat "vc-" (downcase (symbol-name backend))))) | |
260 | (if (fboundp f) f | |
261 | (let ((def (vc-make-backend-sym 'default fun))) | |
262 | (if (fboundp def) (cons def backend) nil)))))) | |
263 | ||
264 | (defun vc-call-backend (backend function-name &rest args) | |
265 | "Call for BACKEND the implementation of FUNCTION-NAME with the given ARGS. | |
266 | Calls | |
267 | ||
268 | (apply 'vc-BACKEND-FUN ARGS) | |
269 | ||
270 | if vc-BACKEND-FUN exists (after trying to find it in vc-BACKEND.el) | |
271 | and else calls | |
272 | ||
273 | (apply 'vc-default-FUN BACKEND ARGS) | |
274 | ||
275 | It is usually called via the `vc-call' macro." | |
0bfb74a9 SM |
276 | (let ((f (assoc function-name (get backend 'vc-functions)))) |
277 | (if f (setq f (cdr f)) | |
0e0d9831 | 278 | (setq f (vc-find-backend-function backend function-name)) |
0bfb74a9 SM |
279 | (push (cons function-name f) (get backend 'vc-functions))) |
280 | (cond | |
281 | ((null f) | |
282 | (error "Sorry, %s is not implemented for %s" function-name backend)) | |
283 | ((consp f) (apply (car f) (cdr f) args)) | |
284 | (t (apply f args))))) | |
0e0d9831 GM |
285 | |
286 | (defmacro vc-call (fun file &rest args) | |
daffc81a JR |
287 | "A convenience macro for calling VC backend functions. |
288 | Functions called by this macro must accept FILE as the first argument. | |
d4e772c4 JB |
289 | ARGS specifies any additional arguments. FUN should be unquoted. |
290 | BEWARE!! FILE is evaluated twice!!" | |
0e0d9831 | 291 | `(vc-call-backend (vc-backend ,file) ',fun ,file ,@args)) |
0e0d9831 GM |
292 | \f |
293 | (defsubst vc-parse-buffer (pattern i) | |
294 | "Find PATTERN in the current buffer and return its Ith submatch." | |
295 | (goto-char (point-min)) | |
296 | (if (re-search-forward pattern nil t) | |
297 | (match-string i))) | |
e1c0c2d1 | 298 | |
02d383eb | 299 | (defun vc-insert-file (file &optional limit blocksize) |
0e0d9831 GM |
300 | "Insert the contents of FILE into the current buffer. |
301 | ||
302 | Optional argument LIMIT is a regexp. If present, the file is inserted | |
303 | in chunks of size BLOCKSIZE (default 8 kByte), until the first | |
f8b72742 | 304 | occurrence of LIMIT is found. Anything from the start of that occurrence |
e30140ce AS |
305 | to the end of the buffer is then deleted. The function returns |
306 | non-nil if FILE exists and its contents were successfully inserted." | |
07de4c3d | 307 | (erase-buffer) |
ff40374a AS |
308 | (when (file-exists-p file) |
309 | (if (not limit) | |
310 | (insert-file-contents file) | |
b5446276 | 311 | (unless blocksize (setq blocksize 8192)) |
4d2806e2 SM |
312 | (let ((filepos 0)) |
313 | (while | |
314 | (and (< 0 (cadr (insert-file-contents | |
315 | file nil filepos (incf filepos blocksize)))) | |
316 | (progn (beginning-of-line) | |
e30140ce | 317 | (let ((pos (re-search-forward limit nil 'move))) |
b5446276 DN |
318 | (when pos (delete-region (match-beginning 0) |
319 | (point-max))) | |
e30140ce | 320 | (not pos))))))) |
ff40374a AS |
321 | (set-buffer-modified-p nil) |
322 | t)) | |
02d383eb | 323 | |
b038f9fb | 324 | (defun vc-find-root (file witness &optional invert) |
ce9f8ffb SM |
325 | "Find the root of a checked out project. |
326 | The function walks up the directory tree from FILE looking for WITNESS. | |
b038f9fb TTN |
327 | If WITNESS if not found, return nil, otherwise return the root. |
328 | Optional arg INVERT non-nil reverses the sense of the check; | |
329 | the root is the last directory for which WITNESS *is* found." | |
43621386 SM |
330 | ;; Represent /home/luser/foo as ~/foo so that we don't try to look for |
331 | ;; witnesses in /home or in /. | |
332 | (setq file (abbreviate-file-name file)) | |
6e94b3b6 | 333 | (let ((root nil) |
b038f9fb | 334 | (prev-file file) |
5f8ea2c8 SM |
335 | ;; `user' is not initialized outside the loop because |
336 | ;; `file' may not exist, so we may have to walk up part of the | |
337 | ;; hierarchy before we find the "initial UID". | |
b03f96dc | 338 | (user nil) |
b038f9fb | 339 | try) |
ce9f8ffb | 340 | (while (not (or root |
3b27900d SM |
341 | (null file) |
342 | ;; As a heuristic, we stop looking up the hierarchy of | |
343 | ;; directories as soon as we find a directory belonging | |
344 | ;; to another user. This should save us from looking in | |
345 | ;; things like /net and /afs. This assumes that all the | |
346 | ;; files inside a project belong to the same user. | |
5f8ea2c8 SM |
347 | (let ((prev-user user)) |
348 | (setq user (nth 2 (file-attributes file))) | |
349 | (and prev-user (not (equal user prev-user)))) | |
3b27900d | 350 | (string-match vc-ignore-dir-regexp file))) |
b038f9fb TTN |
351 | (setq try (file-exists-p (expand-file-name witness file))) |
352 | (cond ((and invert (not try)) (setq root prev-file)) | |
353 | ((and (not invert) try) (setq root file)) | |
354 | ((equal file (setq prev-file file | |
355 | file (file-name-directory | |
356 | (directory-file-name file)))) | |
357 | (setq file nil)))) | |
358 | ;; Handle the case where ~/WITNESS exists and the original FILE is "~". | |
359 | ;; (This occurs, for example, when placing dotfiles under RCS.) | |
360 | (when (and (not root) invert prev-file) | |
361 | (setq root prev-file)) | |
ce9f8ffb SM |
362 | root)) |
363 | ||
14fef9de SM |
364 | ;; Access functions to file properties |
365 | ;; (Properties should be _set_ using vc-file-setprop, but | |
366 | ;; _retrieved_ only through these functions, which decide | |
d4e772c4 | 367 | ;; if the property is already known or not. A property should |
14fef9de SM |
368 | ;; only be retrieved by vc-file-getprop if there is no |
369 | ;; access function.) | |
02d383eb | 370 | |
14fef9de | 371 | ;; properties indicating the backend being used for FILE |
e1c0c2d1 | 372 | |
0e0d9831 GM |
373 | (defun vc-registered (file) |
374 | "Return non-nil if FILE is registered in a version control system. | |
375 | ||
1f22ad24 AS |
376 | This function performs the check each time it is called. To rely |
377 | on the result of a previous call, use `vc-backend' instead. If the | |
378 | file was previously registered under a certain backend, then that | |
379 | backend is tried first." | |
0e0d9831 | 380 | (let (handler) |
ce9f8ffb | 381 | (cond |
44cd688b ER |
382 | ((and (file-name-directory file) (string-match vc-ignore-dir-regexp (file-name-directory file))) |
383 | nil) | |
ce9f8ffb SM |
384 | ((and (boundp 'file-name-handler-alist) |
385 | (setq handler (find-file-name-handler file 'vc-registered))) | |
386 | ;; handler should set vc-backend and return t if registered | |
387 | (funcall handler 'vc-registered file)) | |
388 | (t | |
0e0d9831 GM |
389 | ;; There is no file name handler. |
390 | ;; Try vc-BACKEND-registered for each handled BACKEND. | |
391 | (catch 'found | |
1f22ad24 | 392 | (let ((backend (vc-file-getprop file 'vc-backend))) |
a549ce70 | 393 | (mapc |
1f22ad24 AS |
394 | (lambda (b) |
395 | (and (vc-call-backend b 'registered file) | |
396 | (vc-file-setprop file 'vc-backend b) | |
397 | (throw 'found t))) | |
f8b72742 | 398 | (if (or (not backend) (eq backend 'none)) |
1f22ad24 AS |
399 | vc-handled-backends |
400 | (cons backend vc-handled-backends)))) | |
0e0d9831 GM |
401 | ;; File is not registered. |
402 | (vc-file-setprop file 'vc-backend 'none) | |
ce9f8ffb | 403 | nil))))) |
0e0d9831 | 404 | |
e4d26892 ER |
405 | (defun vc-backend (file-or-list) |
406 | "Return the version control type of FILE-OR-LIST, nil if it's not registered. | |
407 | If the argument is a list, the files must all have the same back end." | |
0e0d9831 | 408 | ;; `file' can be nil in several places (typically due to the use of |
5232a436 | 409 | ;; code like (vc-backend buffer-file-name)). |
e4d26892 ER |
410 | (cond ((stringp file-or-list) |
411 | (let ((property (vc-file-getprop file-or-list 'vc-backend))) | |
412 | ;; Note that internally, Emacs remembers unregistered | |
413 | ;; files by setting the property to `none'. | |
414 | (cond ((eq property 'none) nil) | |
415 | (property) | |
416 | ;; vc-registered sets the vc-backend property | |
417 | (t (if (vc-registered file-or-list) | |
418 | (vc-file-getprop file-or-list 'vc-backend) | |
419 | nil))))) | |
420 | ((and file-or-list (listp file-or-list)) | |
421 | (vc-backend (car file-or-list))) | |
422 | (t | |
423 | nil))) | |
424 | ||
0e0d9831 GM |
425 | |
426 | (defun vc-backend-subdirectory-name (file) | |
427 | "Return where the master and lock FILEs for the current directory are kept." | |
428 | (symbol-name (vc-backend file))) | |
e1c0c2d1 | 429 | |
02d383eb | 430 | (defun vc-name (file) |
5eb2b516 DL |
431 | "Return the master name of FILE. |
432 | If the file is not registered, or the master name is not known, return nil." | |
433 | ;; TODO: This should ultimately become obsolete, at least up here | |
0e0d9831 | 434 | ;; in vc-hooks. |
02d383eb | 435 | (or (vc-file-getprop file 'vc-name) |
64341022 AS |
436 | ;; force computation of the property by calling |
437 | ;; vc-BACKEND-registered explicitly | |
438 | (if (and (vc-backend file) | |
439 | (vc-call-backend (vc-backend file) 'registered file)) | |
8aa81ea8 | 440 | (vc-file-getprop file 'vc-name)))) |
e1c0c2d1 | 441 | |
e0607aaa SM |
442 | (defun vc-checkout-model (backend files) |
443 | "Indicate how FILES are checked out. | |
0e0d9831 | 444 | |
e0607aaa | 445 | If FILES are not registered, this function always returns nil. |
cb5af02a | 446 | For registered files, the possible values are: |
0e0d9831 | 447 | |
e0607aaa | 448 | 'implicit FILES are always writeable, and checked out `implicitly' |
0e0d9831 GM |
449 | when the user saves the first changes to the file. |
450 | ||
e0607aaa | 451 | 'locking FILES are read-only if up-to-date; user must type |
db8afaee | 452 | \\[vc-next-action] before editing. Strict locking |
0e0d9831 GM |
453 | is assumed. |
454 | ||
e0607aaa | 455 | 'announce FILES are read-only if up-to-date; user must type |
db8afaee | 456 | \\[vc-next-action] before editing. But other users |
0e0d9831 | 457 | may be editing at the same time." |
e0607aaa | 458 | (vc-call-backend backend 'checkout-model files)) |
7064821c | 459 | |
8d2b9c1a AS |
460 | (defun vc-user-login-name (file) |
461 | "Return the name under which the user accesses the given FILE." | |
462 | (or (and (eq (string-match tramp-file-name-regexp file) 0) | |
463 | ;; tramp case: execute "whoami" via tramp | |
464 | (let ((default-directory (file-name-directory file))) | |
465 | (with-temp-buffer | |
466 | (if (not (zerop (process-file "whoami" nil t))) | |
467 | ;; fall through if "whoami" didn't work | |
468 | nil | |
469 | ;; remove trailing newline | |
470 | (delete-region (1- (point-max)) (point-max)) | |
471 | (buffer-string))))) | |
472 | ;; normal case | |
473 | (user-login-name) | |
474 | ;; if user-login-name is nil, return the UID as a string | |
475 | (number-to-string (user-uid)))) | |
0e0d9831 GM |
476 | |
477 | (defun vc-state (file) | |
478 | "Return the version control state of FILE. | |
479 | ||
cb5af02a AS |
480 | If FILE is not registered, this function always returns nil. |
481 | For registered files, the value returned is one of: | |
0e0d9831 GM |
482 | |
483 | 'up-to-date The working file is unmodified with respect to the | |
484 | latest version on the current branch, and not locked. | |
485 | ||
486 | 'edited The working file has been edited by the user. If | |
487 | locking is used for the file, this state means that | |
488 | the current version is locked by the calling user. | |
489 | ||
490 | USER The current version of the working file is locked by | |
491 | some other USER (a string). | |
f8b72742 | 492 | |
3702367b | 493 | 'needs-update The file has not been edited by the user, but there is |
0e0d9831 GM |
494 | a more recent version on the current branch stored |
495 | in the master file. | |
496 | ||
497 | 'needs-merge The file has been edited by the user, and there is also | |
498 | a more recent version on the current branch stored in | |
499 | the master file. This state can only occur if locking | |
500 | is not used for the file. | |
501 | ||
fae00181 | 502 | 'unlocked-changes The working version of the file is not locked, |
0e0d9831 GM |
503 | but the working file has been changed with respect |
504 | to that version. This state can only occur for files | |
505 | with locking; it represents an erroneous condition that | |
506 | should be resolved by the user (vc-next-action will | |
fae00181 ER |
507 | prompt the user to do it). |
508 | ||
509 | 'added Scheduled to go into the repository on the next commit. | |
14f26054 | 510 | Often represented by vc-working-revision = \"0\" in VCSes |
722f037f ER |
511 | with monotonic IDs like Subversion and Mercurial. |
512 | ||
484c1b1f | 513 | 'removed Scheduled to be deleted from the repository on next commit. |
527b313d | 514 | |
7fbb4797 | 515 | 'conflict The file contains conflicts as the result of a merge. |
329a656e JB |
516 | For now the conflicts are text conflicts. In the |
517 | future this might be extended to deal with metadata | |
7fbb4797 DN |
518 | conflicts too. |
519 | ||
329a656e | 520 | 'missing The file is not present in the file system, but the VC |
dd0d723c DN |
521 | system still tracks it. |
522 | ||
4903369a | 523 | 'ignored The file showed up in a dir-status listing with a flag |
722f037f | 524 | indicating the version-control system is ignoring it, |
527b313d SS |
525 | Note: This property is not set reliably (some VCSes |
526 | don't have useful directory-status commands) so assume | |
722f037f | 527 | that any file with vc-state nil might be ignorable |
527b313d | 528 | without VC knowing it. |
722f037f | 529 | |
3702367b | 530 | 'unregistered The file is not under version control. |
722f037f | 531 | |
527b313d | 532 | A return of nil from this function means we have no information on the |
d4e772c4 | 533 | status of this file." |
a970a27e ER |
534 | ;; Note: in Emacs 22 and older, return of nil meant the file was |
535 | ;; unregistered. This is potentially a source of | |
536 | ;; backward-compatibility bugs. | |
fae00181 | 537 | |
2a3897f5 | 538 | ;; FIXME: New (sub)states needed (?): |
2a3897f5 | 539 | ;; - `copied' and `moved' (might be handled by `removed' and `added') |
0e0d9831 | 540 | (or (vc-file-getprop file 'vc-state) |
a749e19d SM |
541 | (when (> (length file) 0) |
542 | (let ((backend (vc-backend file))) | |
543 | (when backend | |
544 | (vc-file-setprop | |
545 | file 'vc-state | |
546 | (vc-call-backend backend 'state-heuristic file))))))) | |
0e0d9831 GM |
547 | |
548 | (defsubst vc-up-to-date-p (file) | |
549 | "Convenience function that checks whether `vc-state' of FILE is `up-to-date'." | |
550 | (eq (vc-state file) 'up-to-date)) | |
551 | ||
552 | (defun vc-default-state-heuristic (backend file) | |
d4e772c4 | 553 | "Default implementation of vc-BACKEND-state-heuristic. |
5eb2b516 DL |
554 | It simply calls the real state computation function `vc-BACKEND-state' |
555 | and does not employ any heuristic at all." | |
0e0d9831 | 556 | (vc-call-backend backend 'state file)) |
1efcbf46 | 557 | |
e767004f AS |
558 | (defun vc-workfile-unchanged-p (file) |
559 | "Return non-nil if FILE has not changed since the last checkout." | |
560 | (let ((checkout-time (vc-file-getprop file 'vc-checkout-time)) | |
561 | (lastmod (nth 5 (file-attributes file)))) | |
04e77778 AS |
562 | (if (and checkout-time |
563 | ;; Tramp and Ange-FTP return this when they don't know the time. | |
564 | (not (equal lastmod '(0 0)))) | |
e767004f AS |
565 | (equal checkout-time lastmod) |
566 | (let ((unchanged (vc-call workfile-unchanged-p file))) | |
567 | (vc-file-setprop file 'vc-checkout-time (if unchanged lastmod 0)) | |
568 | unchanged)))) | |
569 | ||
570 | (defun vc-default-workfile-unchanged-p (backend file) | |
571 | "Check if FILE is unchanged by diffing against the master version. | |
572 | Return non-nil if FILE is unchanged." | |
f8836381 | 573 | (zerop (condition-case err |
4392edab AS |
574 | ;; If the implementation supports it, let the output |
575 | ;; go to *vc*, not *vc-diff*, since this is an internal call. | |
a749e19d | 576 | (vc-call-backend backend 'diff (list file) nil nil "*vc*") |
f8836381 AS |
577 | (wrong-number-of-arguments |
578 | ;; If this error came from the above call to vc-BACKEND-diff, | |
579 | ;; try again without the optional buffer argument (for | |
580 | ;; backward compatibility). Otherwise, resignal. | |
581 | (if (or (not (eq (cadr err) | |
582 | (indirect-function | |
a749e19d | 583 | (vc-find-backend-function backend 'diff)))) |
0d2ce4ef JB |
584 | (not (eq (caddr err) 4))) |
585 | (signal (car err) (cdr err)) | |
a749e19d | 586 | (vc-call-backend backend 'diff (list file))))))) |
e767004f | 587 | |
ac3f4c6f | 588 | (defun vc-working-revision (file) |
e4d26892 | 589 | "Return the repository version from which FILE was checked out. |
cb5af02a | 590 | If FILE is not registered, this function always returns nil." |
ac3f4c6f | 591 | (or (vc-file-getprop file 'vc-working-revision) |
a749e19d SM |
592 | (let ((backend (vc-backend file))) |
593 | (when backend | |
594 | (vc-file-setprop file 'vc-working-revision | |
595 | (vc-call-backend backend 'working-revision file)))))) | |
b5446276 | 596 | |
6e5d0e9e SM |
597 | ;; Backward compatibility. |
598 | (define-obsolete-function-alias | |
599 | 'vc-workfile-version 'vc-working-revision "23.1") | |
9b7b3814 DN |
600 | (define-obsolete-function-alias |
601 | 'vc-previous-version 'vc-previous-revision "23.1") | |
6e5d0e9e SM |
602 | (defun vc-default-working-revision (backend file) |
603 | (message | |
604 | "`working-revision' not found: using the old `workfile-version' instead") | |
605 | (vc-call-backend backend 'workfile-version file)) | |
f2ee4191 | 606 | |
0e0d9831 GM |
607 | (defun vc-default-registered (backend file) |
608 | "Check if FILE is registered in BACKEND using vc-BACKEND-master-templates." | |
609 | (let ((sym (vc-make-backend-sym backend 'master-templates))) | |
610 | (unless (get backend 'vc-templates-grabbed) | |
611 | (put backend 'vc-templates-grabbed t) | |
612 | (set sym (append (delq nil | |
613 | (mapcar | |
614 | (lambda (template) | |
615 | (and (consp template) | |
616 | (eq (cdr template) backend) | |
617 | (car template))) | |
3756d481 AS |
618 | (with-no-warnings |
619 | vc-master-templates))) | |
0e0d9831 GM |
620 | (symbol-value sym)))) |
621 | (let ((result (vc-check-master-templates file (symbol-value sym)))) | |
622 | (if (stringp result) | |
623 | (vc-file-setprop file 'vc-name result) | |
624 | nil)))) ; Not registered | |
625 | ||
626 | (defun vc-possible-master (s dirname basename) | |
627 | (cond | |
628 | ((stringp s) (format s dirname basename)) | |
629 | ((functionp s) | |
630 | ;; The template is a function to invoke. If the | |
631 | ;; function returns non-nil, that means it has found a | |
632 | ;; master. For backward compatibility, we also handle | |
633 | ;; the case that the function throws a 'found atom | |
634 | ;; and a pair (cons MASTER-FILE BACKEND). | |
635 | (let ((result (catch 'found (funcall s dirname basename)))) | |
636 | (if (consp result) (car result) result))))) | |
637 | ||
638 | (defun vc-check-master-templates (file templates) | |
cb5af02a | 639 | "Return non-nil if there is a master corresponding to FILE. |
0e0d9831 GM |
640 | |
641 | TEMPLATES is a list of strings or functions. If an element is a | |
642 | string, it must be a control string as required by `format', with two | |
643 | string placeholders, such as \"%sRCS/%s,v\". The directory part of | |
644 | FILE is substituted for the first placeholder, the basename of FILE | |
645 | for the second. If a file with the resulting name exists, it is taken | |
646 | as the master of FILE, and returned. | |
647 | ||
648 | If an element of TEMPLATES is a function, it is called with the | |
649 | directory part and the basename of FILE as arguments. It should | |
650 | return non-nil if it finds a master; that value is then returned by | |
651 | this function." | |
652 | (let ((dirname (or (file-name-directory file) "")) | |
653 | (basename (file-name-nondirectory file))) | |
654 | (catch 'found | |
5eb2b516 | 655 | (mapcar |
0e0d9831 GM |
656 | (lambda (s) |
657 | (let ((trial (vc-possible-master s dirname basename))) | |
b5446276 DN |
658 | (when (and trial (file-exists-p trial) |
659 | ;; Make sure the file we found with name | |
660 | ;; TRIAL is not the source file itself. | |
661 | ;; That can happen with RCS-style names if | |
662 | ;; the file name is truncated (e.g. to 14 | |
663 | ;; chars). See if either directory or | |
664 | ;; attributes differ. | |
665 | (or (not (string= dirname | |
666 | (file-name-directory trial))) | |
667 | (not (equal (file-attributes file) | |
668 | (file-attributes trial))))) | |
0e0d9831 GM |
669 | (throw 'found trial)))) |
670 | templates)))) | |
f2ee4191 | 671 | |
c844616c | 672 | (defun vc-toggle-read-only (&optional verbose) |
c43e436c | 673 | "Change read-only status of current buffer, perhaps via version control. |
db8afaee | 674 | |
c43e436c | 675 | If the buffer is visiting a file registered with version control, |
d4e772c4 JB |
676 | throw an error, because this is not a safe or really meaningful operation |
677 | on any version-control system newer than RCS. | |
25e94278 ER |
678 | |
679 | Otherwise, just change the read-only flag of the buffer. | |
680 | ||
681 | If you bind this function to \\[toggle-read-only], then Emacs | |
682 | will properly intercept all attempts to toggle the read-only flag | |
683 | on version-controlled buffer." | |
c844616c | 684 | (interactive "P") |
25e94278 ER |
685 | (if (vc-backend buffer-file-name) |
686 | (error "Toggling the readability of a version controlled file is likely to wreak havoc.") | |
594722a8 ER |
687 | (toggle-read-only))) |
688 | ||
e896a9e1 | 689 | (defun vc-default-make-version-backups-p (backend file) |
cb5af02a | 690 | "Return non-nil if unmodified versions should be backed up locally. |
9aa10a43 | 691 | The default is to switch off this feature." |
d445a975 AS |
692 | nil) |
693 | ||
e896a9e1 AS |
694 | (defun vc-version-backup-file-name (file &optional rev manual regexp) |
695 | "Return a backup file name for REV or the current version of FILE. | |
696 | If MANUAL is non-nil it means that a name for backups created by | |
697 | the user should be returned; if REGEXP is non-nil that means to return | |
698 | a regexp for matching all such backup files, regardless of the version." | |
e3f955b6 AS |
699 | (if regexp |
700 | (concat (regexp-quote (file-name-nondirectory file)) | |
d4c813e9 | 701 | "\\.~.+" (unless manual "\\.") "~") |
f8b72742 | 702 | (expand-file-name (concat (file-name-nondirectory file) |
d4c813e9 | 703 | ".~" (subst-char-in-string |
ac3f4c6f | 704 | ?/ ?_ (or rev (vc-working-revision file))) |
e3f955b6 AS |
705 | (unless manual ".") "~") |
706 | (file-name-directory file)))) | |
e896a9e1 AS |
707 | |
708 | (defun vc-delete-automatic-version-backups (file) | |
709 | "Delete all existing automatic version backups for FILE." | |
d455f4f7 | 710 | (condition-case nil |
a549ce70 | 711 | (mapc |
d455f4f7 | 712 | 'delete-file |
79e954d0 | 713 | (directory-files (or (file-name-directory file) default-directory) t |
d455f4f7 SM |
714 | (vc-version-backup-file-name file nil nil t))) |
715 | ;; Don't fail when the directory doesn't exist. | |
716 | (file-error nil))) | |
e896a9e1 AS |
717 | |
718 | (defun vc-make-version-backup (file) | |
719 | "Make a backup copy of FILE, which is assumed in sync with the repository. | |
720 | Before doing that, check if there are any old backups and get rid of them." | |
48b15d3f | 721 | (unless (and (fboundp 'msdos-long-file-names) |
ee9be3de | 722 | (not (with-no-warnings (msdos-long-file-names)))) |
48b15d3f | 723 | (vc-delete-automatic-version-backups file) |
27707243 AS |
724 | (condition-case nil |
725 | (copy-file file (vc-version-backup-file-name file) | |
726 | nil 'keep-date) | |
727 | ;; It's ok if it doesn't work (e.g. directory not writable), | |
728 | ;; since this is just for efficiency. | |
bf247b6e | 729 | (file-error |
27707243 AS |
730 | (message |
731 | (concat "Warning: Cannot make version backup; " | |
732 | "diff/revert therefore not local")))))) | |
d445a975 AS |
733 | |
734 | (defun vc-before-save () | |
735 | "Function to be called by `basic-save-buffer' (in files.el)." | |
736 | ;; If the file on disk is still in sync with the repository, | |
737 | ;; and version backups should be made, copy the file to | |
738 | ;; another name. This enables local diffs and local reverting. | |
e0607aaa SM |
739 | (let ((file buffer-file-name) |
740 | backend) | |
f42af255 | 741 | (ignore-errors ;Be careful not to prevent saving the file. |
e0607aaa | 742 | (and (setq backend (vc-backend file)) |
f42af255 | 743 | (vc-up-to-date-p file) |
70e2f6c7 | 744 | (eq (vc-checkout-model backend (list file)) 'implicit) |
a749e19d | 745 | (vc-call-backend backend 'make-version-backups-p file) |
f42af255 | 746 | (vc-make-version-backup file))))) |
d445a975 | 747 | |
74d0991f | 748 | (declare-function vc-dir-resynch-file "vc-dir" (&optional fname)) |
004a00f4 | 749 | |
e66eac08 | 750 | (defun vc-after-save () |
0e0d9831 | 751 | "Function to be called by `basic-save-buffer' (in files.el)." |
5eb2b516 | 752 | ;; If the file in the current buffer is under version control, |
0e0d9831 GM |
753 | ;; up-to-date, and locking is not used for the file, set |
754 | ;; the state to 'edited and redisplay the mode line. | |
e0607aaa SM |
755 | (let* ((file buffer-file-name) |
756 | (backend (vc-backend file))) | |
757 | (and backend | |
b23a2306 AS |
758 | (or (and (equal (vc-file-getprop file 'vc-checkout-time) |
759 | (nth 5 (file-attributes file))) | |
760 | ;; File has been saved in the same second in which | |
761 | ;; it was checked out. Clear the checkout-time | |
762 | ;; to avoid confusion. | |
763 | (vc-file-setprop file 'vc-checkout-time nil)) | |
764 | t) | |
0e0d9831 | 765 | (vc-up-to-date-p file) |
70e2f6c7 | 766 | (eq (vc-checkout-model backend (list file)) 'implicit) |
0e0d9831 GM |
767 | (vc-file-setprop file 'vc-state 'edited) |
768 | (vc-mode-line file) | |
e02d8ae7 DN |
769 | ;; Try to avoid unnecessary work, a *vc-dir* buffer is only |
770 | ;; present if this is true. | |
771 | (when (memq 'vc-dir-resynch-file after-save-hook) | |
772 | (vc-dir-resynch-file file))))) | |
04446ed0 | 773 | |
e2247dc8 SM |
774 | (defvar vc-menu-entry |
775 | '(menu-item "Version Control" vc-menu-map | |
776 | :filter vc-menu-map-filter)) | |
777 | ||
778 | (when (boundp 'menu-bar-tools-menu) | |
779 | ;; We do not need to worry here about the placement of this entry | |
780 | ;; because menu-bar.el has already created the proper spot for us | |
781 | ;; and this will simply use it. | |
782 | (define-key menu-bar-tools-menu [vc] vc-menu-entry)) | |
783 | ||
5719a098 SM |
784 | (defconst vc-mode-line-map |
785 | (let ((map (make-sparse-keymap))) | |
e2247dc8 | 786 | (define-key map [mode-line down-mouse-1] vc-menu-entry) |
5719a098 SM |
787 | map)) |
788 | ||
0e0d9831 | 789 | (defun vc-mode-line (file) |
7bc2b98b | 790 | "Set `vc-mode' to display type of version control for FILE. |
594722a8 | 791 | The value is set in the current buffer, which should be the buffer |
0e0d9831 | 792 | visiting FILE." |
67c6f446 | 793 | (interactive (list buffer-file-name)) |
5719a098 | 794 | (let ((backend (vc-backend file))) |
5232a436 SM |
795 | (if (not backend) |
796 | (setq vc-mode nil) | |
a749e19d | 797 | (let* ((ml-string (vc-call-backend backend 'mode-line-string file)) |
5719a098 SM |
798 | (ml-echo (get-text-property 0 'help-echo ml-string))) |
799 | (setq vc-mode | |
800 | (concat | |
801 | " " | |
802 | (if (null vc-display-status) | |
803 | (symbol-name backend) | |
804 | (propertize | |
805 | ml-string | |
806 | 'mouse-face 'mode-line-highlight | |
527b313d | 807 | 'help-echo |
5719a098 SM |
808 | (concat (or ml-echo |
809 | (format "File under the %s version control system" | |
810 | backend)) | |
811 | "\nmouse-1: Version Control menu") | |
812 | 'local-map vc-mode-line-map))))) | |
5232a436 SM |
813 | ;; If the file is locked by some other user, make |
814 | ;; the buffer read-only. Like this, even root | |
815 | ;; cannot modify a file that someone else has locked. | |
816 | (and (equal file buffer-file-name) | |
817 | (stringp (vc-state file)) | |
818 | (setq buffer-read-only t)) | |
819 | ;; If the user is root, and the file is not owner-writable, | |
820 | ;; then pretend that we can't write it | |
821 | ;; even though we can (because root can write anything). | |
e02d8ae7 DN |
822 | ;; This way, even root cannot modify a file that isn't locked. |
823 | (and (equal file buffer-file-name) | |
824 | (not buffer-read-only) | |
5232a436 SM |
825 | (zerop (user-real-uid)) |
826 | (zerop (logand (file-modes buffer-file-name) 128)) | |
827 | (setq buffer-read-only t))) | |
828 | (force-mode-line-update) | |
829 | backend)) | |
0e0d9831 GM |
830 | |
831 | (defun vc-default-mode-line-string (backend file) | |
832 | "Return string for placement in modeline by `vc-mode-line' for FILE. | |
833 | Format: | |
834 | ||
835 | \"BACKEND-REV\" if the file is up-to-date | |
836 | \"BACKEND:REV\" if the file is edited (or locked by the calling user) | |
837 | \"BACKEND:LOCKER:REV\" if the file is locked by somebody else | |
0e0d9831 GM |
838 | |
839 | This function assumes that the file is registered." | |
840 | (setq backend (symbol-name backend)) | |
841 | (let ((state (vc-state file)) | |
82c4728d | 842 | (state-echo nil) |
ac3f4c6f | 843 | (rev (vc-working-revision file))) |
82c4728d DN |
844 | (propertize |
845 | (cond ((or (eq state 'up-to-date) | |
3702367b | 846 | (eq state 'needs-update)) |
82c4728d DN |
847 | (setq state-echo "Up to date file") |
848 | (concat backend "-" rev)) | |
849 | ((stringp state) | |
850 | (setq state-echo (concat "File locked by" state)) | |
851 | (concat backend ":" state ":" rev)) | |
45b24b4d SM |
852 | ((eq state 'added) |
853 | (setq state-echo "Locally added file") | |
854 | (concat backend "@" rev)) | |
7fbb4797 DN |
855 | ((eq state 'conflict) |
856 | (setq state-echo "File contains conflicts after the last merge") | |
857 | (concat backend "!" rev)) | |
a58b57e2 DN |
858 | ((eq state 'removed) |
859 | (setq state-echo "File removed from the VC system") | |
860 | (concat backend "!" rev)) | |
861 | ((eq state 'missing) | |
862 | (setq state-echo "File tracked by the VC system, but missing from the file system") | |
5bad3140 | 863 | (concat backend "?" rev)) |
82c4728d DN |
864 | (t |
865 | ;; Not just for the 'edited state, but also a fallback | |
866 | ;; for all other states. Think about different symbols | |
3702367b | 867 | ;; for 'needs-update and 'needs-merge. |
3a12f9f8 | 868 | (setq state-echo "Locally modified file") |
82c4728d | 869 | (concat backend ":" rev))) |
33e0847d | 870 | 'help-echo (concat state-echo " under the " backend |
3a12f9f8 | 871 | " version control system")))) |
f2ee4191 | 872 | |
a3a39848 | 873 | (defun vc-follow-link () |
0e0d9831 GM |
874 | "If current buffer visits a symbolic link, visit the real file. |
875 | If the real file is already visited in another buffer, make that buffer | |
876 | current, and kill the buffer that visits the link." | |
566f2169 | 877 | (let* ((truename (abbreviate-file-name (file-chase-links buffer-file-name))) |
e7f5ddc2 RS |
878 | (true-buffer (find-buffer-visiting truename)) |
879 | (this-buffer (current-buffer))) | |
880 | (if (eq true-buffer this-buffer) | |
881 | (progn | |
d8221951 | 882 | (kill-buffer this-buffer) |
e7f5ddc2 RS |
883 | ;; In principle, we could do something like set-visited-file-name. |
884 | ;; However, it can't be exactly the same as set-visited-file-name. | |
885 | ;; I'm not going to work out the details right now. -- rms. | |
d8221951 | 886 | (set-buffer (find-file-noselect truename))) |
e7f5ddc2 RS |
887 | (set-buffer true-buffer) |
888 | (kill-buffer this-buffer)))) | |
a3a39848 | 889 | |
b8d1db77 SM |
890 | (defun vc-default-find-file-hook (backend) |
891 | nil) | |
892 | ||
594722a8 | 893 | (defun vc-find-file-hook () |
be4d6a6f | 894 | "Function for `find-file-hook' activating VC mode if appropriate." |
18c8a18e PE |
895 | ;; Recompute whether file is version controlled, |
896 | ;; if user has killed the buffer and revisited. | |
060a1456 AS |
897 | (if vc-mode |
898 | (setq vc-mode nil)) | |
0e0d9831 | 899 | (when buffer-file-name |
f2ee4191 | 900 | (vc-file-clearprops buffer-file-name) |
c8d4f1a0 | 901 | (add-hook 'mode-line-hook 'vc-mode-line nil t) |
f2ee4191 | 902 | (cond |
fc8b8d0f | 903 | ((with-demoted-errors (vc-backend buffer-file-name)) |
0bfb74a9 | 904 | ;; Compute the state and put it in the modeline. |
f2ee4191 | 905 | (vc-mode-line buffer-file-name) |
0bfb74a9 SM |
906 | (unless vc-make-backup-files |
907 | ;; Use this variable, not make-backup-files, | |
908 | ;; because this is for things that depend on the file name. | |
b8d1db77 SM |
909 | (set (make-local-variable 'backup-inhibited) t)) |
910 | ;; Let the backend setup any buffer-local things he needs. | |
911 | (vc-call-backend (vc-backend buffer-file-name) 'find-file-hook)) | |
4d11f532 SM |
912 | ((let ((link-type (and (file-symlink-p buffer-file-name) |
913 | (vc-backend (file-chase-links buffer-file-name))))) | |
0bfb74a9 SM |
914 | (cond ((not link-type) nil) ;Nothing to do. |
915 | ((eq vc-follow-symlinks nil) | |
916 | (message | |
b8063212 | 917 | "Warning: symbolic link to %s-controlled source file" link-type)) |
0bfb74a9 SM |
918 | ((or (not (eq vc-follow-symlinks 'ask)) |
919 | ;; If we already visited this file by following | |
920 | ;; the link, don't ask again if we try to visit | |
921 | ;; it again. GUD does that, and repeated questions | |
922 | ;; are painful. | |
923 | (get-file-buffer | |
924 | (abbreviate-file-name | |
925 | (file-chase-links buffer-file-name)))) | |
926 | ||
927 | (vc-follow-link) | |
928 | (message "Followed link to %s" buffer-file-name) | |
929 | (vc-find-file-hook)) | |
930 | (t | |
931 | (if (yes-or-no-p (format | |
b8063212 | 932 | "Symbolic link to %s-controlled source file; follow link? " link-type)) |
0bfb74a9 SM |
933 | (progn (vc-follow-link) |
934 | (message "Followed link to %s" buffer-file-name) | |
935 | (vc-find-file-hook)) | |
936 | (message | |
b8063212 | 937 | "Warning: editing through the link bypasses version control") |
0bfb74a9 | 938 | )))))))) |
594722a8 | 939 | |
be4d6a6f | 940 | (add-hook 'find-file-hook 'vc-find-file-hook) |
594722a8 | 941 | |
14fef9de | 942 | ;; more hooks, this time for file-not-found |
594722a8 | 943 | (defun vc-file-not-found-hook () |
0e0d9831 GM |
944 | "When file is not found, try to check it out from version control. |
945 | Returns t if checkout was successful, nil otherwise. | |
d3d558a9 | 946 | Used in `find-file-not-found-functions'." |
5f42a1d4 RS |
947 | ;; When a file does not exist, ignore cached info about it |
948 | ;; from a previous visit. | |
949 | (vc-file-clearprops buffer-file-name) | |
4a330ab7 | 950 | (let ((backend (vc-backend buffer-file-name))) |
b5446276 | 951 | (when backend (vc-call-backend backend 'find-file-not-found-hook)))) |
4a330ab7 SM |
952 | |
953 | (defun vc-default-find-file-not-found-hook (backend) | |
a3773730 SM |
954 | ;; This used to do what vc-rcs-find-file-not-found-hook does, but it only |
955 | ;; really makes sense for RCS. For other backends, better not do anything. | |
956 | nil) | |
594722a8 | 957 | |
3756d481 | 958 | (add-hook 'find-file-not-found-functions 'vc-file-not-found-hook) |
594722a8 | 959 | |
f2ee4191 | 960 | (defun vc-kill-buffer-hook () |
0e0d9831 | 961 | "Discard VC info about a file when we kill its buffer." |
b5446276 | 962 | (when buffer-file-name (vc-file-clearprops buffer-file-name))) |
f2ee4191 | 963 | |
cd32d5d1 | 964 | (add-hook 'kill-buffer-hook 'vc-kill-buffer-hook) |
f2ee4191 | 965 | |
14fef9de SM |
966 | ;; Now arrange for (autoloaded) bindings of the main package. |
967 | ;; Bindings for this have to go in the global map, as we'll often | |
968 | ;; want to call them from random buffers. | |
969 | ||
970 | ;; Autoloading works fine, but it prevents shortcuts from appearing | |
971 | ;; in the menu because they don't exist yet when the menu is built. | |
972 | ;; (autoload 'vc-prefix-map "vc" nil nil 'keymap) | |
973 | (defvar vc-prefix-map | |
974 | (let ((map (make-sparse-keymap))) | |
975 | (define-key map "a" 'vc-update-change-log) | |
976 | (define-key map "b" 'vc-switch-backend) | |
e4d26892 | 977 | (define-key map "c" 'vc-rollback) |
e1aec6fb | 978 | (define-key map "d" 'vc-dir) |
14fef9de SM |
979 | (define-key map "g" 'vc-annotate) |
980 | (define-key map "h" 'vc-insert-headers) | |
981 | (define-key map "i" 'vc-register) | |
982 | (define-key map "l" 'vc-print-log) | |
983 | (define-key map "m" 'vc-merge) | |
370fded4 ER |
984 | (define-key map "r" 'vc-retrieve-tag) |
985 | (define-key map "s" 'vc-create-tag) | |
e4d26892 | 986 | (define-key map "u" 'vc-revert) |
14fef9de | 987 | (define-key map "v" 'vc-next-action) |
e4d26892 | 988 | (define-key map "+" 'vc-update) |
14fef9de | 989 | (define-key map "=" 'vc-diff) |
0a0ca7f1 | 990 | (define-key map "~" 'vc-revision-other-window) |
14fef9de SM |
991 | map)) |
992 | (fset 'vc-prefix-map vc-prefix-map) | |
c1fdf758 | 993 | (define-key global-map "\C-xv" 'vc-prefix-map) |
624c0e9d | 994 | |
e2247dc8 SM |
995 | (defvar vc-menu-map |
996 | (let ((map (make-sparse-keymap "Version Control"))) | |
997 | ;;(define-key map [show-files] | |
998 | ;; '("Show Files under VC" . (vc-directory t))) | |
370fded4 ER |
999 | (define-key map [vc-retrieve-tag] |
1000 | '(menu-item "Retrieve Tag" vc-retrieve-tag | |
1001 | :help "Retrieve tagged version or branch")) | |
1002 | (define-key map [vc-create-tag] | |
1003 | '(menu-item "Create Tag" vc-create-tag | |
1004 | :help "Create version tag")) | |
e2247dc8 | 1005 | (define-key map [separator1] '("----")) |
6dbb5c76 | 1006 | (define-key map [vc-annotate] |
40fabc71 DN |
1007 | '(menu-item "Annotate" vc-annotate |
1008 | :help "Display the edit history of the current file using colors")) | |
6dbb5c76 | 1009 | (define-key map [vc-rename-file] |
40fabc71 DN |
1010 | '(menu-item "Rename File" vc-rename-file |
1011 | :help "Rename file")) | |
0a0ca7f1 | 1012 | (define-key map [vc-revision-other-window] |
40fabc71 DN |
1013 | '(menu-item "Show Other Version" vc-revision-other-window |
1014 | :help "Visit another version of the current file in another window")) | |
6dbb5c76 | 1015 | (define-key map [vc-diff] |
40fabc71 DN |
1016 | '(menu-item "Compare with Base Version" vc-diff |
1017 | :help "Compare file set with the base version")) | |
e2247dc8 | 1018 | (define-key map [vc-update-change-log] |
40fabc71 DN |
1019 | '(menu-item "Update ChangeLog" vc-update-change-log |
1020 | :help "Find change log file and add entries from recent version control logs")) | |
6dbb5c76 | 1021 | (define-key map [vc-print-log] |
40fabc71 DN |
1022 | '(menu-item "Show History" vc-print-log |
1023 | :help "List the change log of the current file set in a window")) | |
e2247dc8 SM |
1024 | (define-key map [separator2] '("----")) |
1025 | (define-key map [vc-insert-header] | |
40fabc71 DN |
1026 | '(menu-item "Insert Header" vc-insert-headers |
1027 | :help "Insert headers into a file for use with a version control system. | |
1028 | ")) | |
6dbb5c76 | 1029 | (define-key map [undo] |
40fabc71 DN |
1030 | '(menu-item "Undo Last Check-In" vc-rollback |
1031 | :help "Remove the most recent changeset committed to the repository")) | |
e2247dc8 | 1032 | (define-key map [vc-revert] |
40fabc71 DN |
1033 | '(menu-item "Revert to Base Version" vc-revert |
1034 | :help "Revert working copies of the selected file set to their repository contents")) | |
e2247dc8 | 1035 | (define-key map [vc-update] |
40fabc71 DN |
1036 | '(menu-item "Update to Latest Version" vc-update |
1037 | :help "Update the current fileset's files to their tip revisions")) | |
6dbb5c76 | 1038 | (define-key map [vc-next-action] |
40fabc71 DN |
1039 | '(menu-item "Check In/Out" vc-next-action |
1040 | :help "Do the next logical version control operation on the current fileset")) | |
6dbb5c76 | 1041 | (define-key map [vc-register] |
40fabc71 DN |
1042 | '(menu-item "Register" vc-register |
1043 | :help "Register file set into a version control system")) | |
e1aec6fb SM |
1044 | (define-key map [vc-dir] |
1045 | '(menu-item "VC Dir" vc-dir | |
7fbb4797 | 1046 | :help "Show the VC status of files in a directory")) |
e2247dc8 SM |
1047 | map)) |
1048 | ||
1049 | (defalias 'vc-menu-map vc-menu-map) | |
1050 | ||
aafb0703 GM |
1051 | (declare-function vc-responsible-backend "vc" (file &optional register)) |
1052 | ||
e2247dc8 SM |
1053 | (defun vc-menu-map-filter (orig-binding) |
1054 | (if (and (symbolp orig-binding) (fboundp orig-binding)) | |
1055 | (setq orig-binding (indirect-function orig-binding))) | |
1056 | (let ((ext-binding | |
f3d57a2c | 1057 | (when vc-mode |
aafb0703 | 1058 | (vc-call-backend |
f3d57a2c DN |
1059 | (if buffer-file-name |
1060 | (vc-backend buffer-file-name) | |
1061 | (vc-responsible-backend default-directory)) | |
1062 | 'extra-menu)))) | |
e2247dc8 SM |
1063 | ;; Give the VC backend a chance to add menu entries |
1064 | ;; specific for that backend. | |
1065 | (if (null ext-binding) | |
98481bad | 1066 | orig-binding |
e2247dc8 SM |
1067 | (append orig-binding |
1068 | '((ext-menu-separator "---")) | |
98481bad | 1069 | ext-binding)))) |
738efc8e | 1070 | |
cb223bba DN |
1071 | (defun vc-default-extra-menu (backend) |
1072 | nil) | |
1073 | ||
14fef9de SM |
1074 | ;; These are not correct and it's not currently clear how doing it |
1075 | ;; better (with more complicated expressions) might slow things down | |
1076 | ;; on older systems. | |
1077 | ||
1078 | ;;(put 'vc-rename-file 'menu-enable 'vc-mode) | |
1079 | ;;(put 'vc-annotate 'menu-enable '(eq (vc-buffer-backend) 'CVS)) | |
0a0ca7f1 | 1080 | ;;(put 'vc-revision-other-window 'menu-enable 'vc-mode) |
14fef9de SM |
1081 | ;;(put 'vc-diff 'menu-enable 'vc-mode) |
1082 | ;;(put 'vc-update-change-log 'menu-enable | |
1083 | ;; '(member (vc-buffer-backend) '(RCS CVS))) | |
1084 | ;;(put 'vc-print-log 'menu-enable 'vc-mode) | |
e4d26892 ER |
1085 | ;;(put 'vc-rollback 'menu-enable 'vc-mode) |
1086 | ;;(put 'vc-revert 'menu-enable 'vc-mode) | |
14fef9de SM |
1087 | ;;(put 'vc-insert-headers 'menu-enable 'vc-mode) |
1088 | ;;(put 'vc-next-action 'menu-enable 'vc-mode) | |
1089 | ;;(put 'vc-register 'menu-enable '(and buffer-file-name (not vc-mode))) | |
594722a8 | 1090 | |
594722a8 ER |
1091 | (provide 'vc-hooks) |
1092 | ||
ce9f8ffb | 1093 | ;; arch-tag: 2e5a6fa7-1d30-48e2-8bd0-e3d335f04f32 |
594722a8 | 1094 | ;;; vc-hooks.el ends here |