HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| d8aff077 GM |
1 | ;;; vc-rcs.el --- support for RCS version-control |
| 2 | ||
| 3 | ;; Copyright (C) 1992,93,94,95,96,97,98,99,2000 Free Software Foundation, Inc. | |
| 4 | ||
| 5 | ;; Author: FSF (see vc.el for full credits) | |
| 6 | ;; Maintainer: Andre Spiegel <spiegel@gnu.org> | |
| 7 | ||
| fb0d6a79 | 8 | ;; $Id: vc-rcs.el,v 1.10 2000/10/03 11:33:59 spiegel Exp $ |
| d8aff077 GM |
9 | |
| 10 | ;; This file is part of GNU Emacs. | |
| 11 | ||
| 12 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 13 | ;; it under the terms of the GNU General Public License as published by | |
| 14 | ;; the Free Software Foundation; either version 2, or (at your option) | |
| 15 | ;; any later version. | |
| 16 | ||
| 17 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 18 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 19 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 20 | ;; GNU General Public License for more details. | |
| 21 | ||
| 22 | ;; You should have received a copy of the GNU General Public License | |
| 23 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
| 24 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
| 25 | ;; Boston, MA 02111-1307, USA. | |
| 26 | ||
| 27 | ;;; Commentary: see vc.el | |
| 28 | ||
| 29 | ;;; Code: | |
| 30 | ||
| 0bc58756 | 31 | (eval-when-compile |
| 7849e179 | 32 | (require 'cl)) |
| 0bc58756 | 33 | |
| d8aff077 GM |
34 | (defcustom vc-rcs-release nil |
| 35 | "*The release number of your RCS installation, as a string. | |
| 36 | If nil, VC itself computes this value when it is first needed." | |
| 37 | :type '(choice (const :tag "Auto" nil) | |
| 38 | (string :tag "Specified") | |
| 39 | (const :tag "Unknown" unknown)) | |
| 40 | :group 'vc) | |
| 41 | ||
| 42 | (defcustom vc-rcs-register-switches nil | |
| 33c1b7a1 DL |
43 | "*Extra switches for registering a file in RCS. |
| 44 | A string or list of strings. These are passed to the checkin program | |
| 45 | by \\[vc-rcs-register]." | |
| d8aff077 GM |
46 | :type '(choice (const :tag "None" nil) |
| 47 | (string :tag "Argument String") | |
| 48 | (repeat :tag "Argument List" | |
| 49 | :value ("") | |
| 50 | string)) | |
| 33c1b7a1 | 51 | :version "21.1" |
| d8aff077 GM |
52 | :group 'vc) |
| 53 | ||
| 54 | (defcustom vc-rcs-checkin-switches nil | |
| 55 | "*A string or list of strings specifying extra switches for RCS checkin. | |
| 56 | These are passed to the checkin program by \\[vc-rcs-checkin]." | |
| 57 | :type '(choice (const :tag "None" nil) | |
| 58 | (string :tag "Argument String") | |
| 59 | (repeat :tag "Argument List" | |
| 60 | :value ("") | |
| 61 | string)) | |
| 33c1b7a1 | 62 | :version "21.1" |
| d8aff077 GM |
63 | :group 'vc) |
| 64 | ||
| 65 | (defcustom vc-rcs-checkout-switches nil | |
| 66 | "*A string or list of strings specifying extra switches for RCS checkout. | |
| 67 | These are passed to the checkout program by \\[vc-rcs-checkout]." | |
| 68 | :type '(choice (const :tag "None" nil) | |
| 69 | (string :tag "Argument String") | |
| 70 | (repeat :tag "Argument List" | |
| 71 | :value ("") | |
| 72 | string)) | |
| 33c1b7a1 | 73 | :version "21.1" |
| d8aff077 GM |
74 | :group 'vc) |
| 75 | ||
| 76 | (defcustom vc-rcs-header (or (cdr (assoc 'RCS vc-header-alist)) '("\$Id\$")) | |
| 77 | "*Header keywords to be inserted by `vc-insert-headers'." | |
| 78 | :type 'string | |
| 33c1b7a1 | 79 | :version "21.1" |
| d8aff077 GM |
80 | :group 'vc) |
| 81 | ||
| 82 | (defcustom vc-rcsdiff-knows-brief nil | |
| 83 | "*Indicates whether rcsdiff understands the --brief option. | |
| 84 | The value is either `yes', `no', or nil. If it is nil, VC tries | |
| 85 | to use --brief and sets this variable to remember whether it worked." | |
| 86 | :type '(choice (const :tag "Work out" nil) (const yes) (const no)) | |
| 87 | :group 'vc) | |
| 88 | ||
| 89 | ;;;###autoload | |
| 90 | (defcustom vc-rcs-master-templates | |
| 91 | '("%sRCS/%s,v" "%s%s,v" "%sRCS/%s") | |
| 92 | "*Where to look for RCS master files. | |
| 93 | For a description of possible values, see `vc-check-master-templates'." | |
| 94 | :type '(choice (const :tag "Use standard RCS file names" | |
| 95 | '("%sRCS/%s,v" "%s%s,v" "%sRCS/%s")) | |
| 96 | (repeat :tag "User-specified" | |
| 97 | (choice string | |
| 98 | function))) | |
| 33c1b7a1 | 99 | :version "21.1" |
| d8aff077 GM |
100 | :group 'vc) |
| 101 | ||
| 102 | ;;;###autoload | |
| 103 | (progn (defun vc-rcs-registered (f) (vc-default-registered 'RCS f))) | |
| 104 | ||
| 105 | (defun vc-rcs-state (file) | |
| 106 | "Implementation of `vc-state' for RCS." | |
| 107 | (or (boundp 'vc-rcs-headers-result) | |
| 108 | (and vc-consult-headers | |
| 109 | (vc-rcs-consult-headers file))) | |
| 110 | (let ((state | |
| 111 | ;; vc-workfile-version might not be known; in that case the | |
| 112 | ;; property is nil. vc-rcs-fetch-master-state knows how to | |
| 113 | ;; handle that. | |
| 33c1b7a1 DL |
114 | (vc-rcs-fetch-master-state file |
| 115 | (vc-file-getprop file | |
| d8aff077 GM |
116 | 'vc-workfile-version)))) |
| 117 | (if (eq state 'up-to-date) | |
| 33c1b7a1 DL |
118 | (if (vc-workfile-unchanged-p file) |
| 119 | 'up-to-date | |
| d8aff077 GM |
120 | 'unlocked-changes) |
| 121 | state))) | |
| 122 | ||
| 123 | (defun vc-rcs-state-heuristic (file) | |
| 124 | "State heuristic for RCS." | |
| 125 | (let (vc-rcs-headers-result) | |
| 126 | (if (and vc-consult-headers | |
| 33c1b7a1 | 127 | (setq vc-rcs-headers-result |
| d8aff077 GM |
128 | (vc-rcs-consult-headers file)) |
| 129 | (eq vc-rcs-headers-result 'rev-and-lock)) | |
| 130 | (let ((state (vc-file-getprop file 'vc-state))) | |
| 131 | ;; If the headers say that the file is not locked, the | |
| 132 | ;; permissions can tell us whether locking is used for | |
| 133 | ;; the file or not. | |
| 134 | (if (and (eq state 'up-to-date) | |
| 135 | (not (vc-mistrust-permissions file))) | |
| 136 | (cond | |
| 137 | ((string-match ".rw..-..-." (nth 8 (file-attributes file))) | |
| 0db2c43c AS |
138 | (vc-file-setprop file 'vc-checkout-model 'implicit) |
| 139 | (setq state | |
| 140 | (if (vc-rcs-workfile-is-newer file) | |
| 141 | 'edited | |
| 142 | 'up-to-date))) | |
| d8aff077 GM |
143 | ((string-match ".r-..-..-." (nth 8 (file-attributes file))) |
| 144 | (vc-file-setprop file 'vc-checkout-model 'locking)))) | |
| 145 | state) | |
| 146 | (if (not (vc-mistrust-permissions file)) | |
| 147 | (let* ((attributes (file-attributes file)) | |
| 148 | (owner-uid (nth 2 attributes)) | |
| 149 | (permissions (nth 8 attributes))) | |
| 150 | (cond ((string-match ".r-..-..-." permissions) | |
| 151 | (vc-file-setprop file 'vc-checkout-model 'locking) | |
| 152 | 'up-to-date) | |
| 153 | ((string-match ".rw..-..-." permissions) | |
| 0db2c43c AS |
154 | (if (eq (vc-checkout-model file) 'locking) |
| 155 | (if (file-ownership-preserved-p file) | |
| 156 | 'edited | |
| 157 | (vc-user-login-name owner-uid)) | |
| 158 | (if (vc-rcs-workfile-is-newer file) | |
| 159 | 'edited | |
| 160 | 'up-to-date))) | |
| d8aff077 GM |
161 | (t |
| 162 | ;; Strange permissions. Fall through to | |
| 163 | ;; expensive state computation. | |
| 164 | (vc-rcs-state file)))) | |
| 165 | (vc-rcs-state file))))) | |
| 166 | ||
| 0db2c43c AS |
167 | (defun vc-rcs-workfile-is-newer (file) |
| 168 | "Return non-nil if FILE is newer than its RCS master. | |
| 169 | This likely means that FILE has been changed with respect | |
| 170 | to its master version." | |
| 171 | (let ((file-time (nth 5 (file-attributes file))) | |
| 172 | (master-time (nth 5 (file-attributes (vc-name file))))) | |
| 173 | (or (> (nth 0 file-time) (nth 0 master-time)) | |
| 174 | (and (= (nth 0 file-time) (nth 0 master-time)) | |
| 175 | (> (nth 1 file-time) (nth 1 master-time)))))) | |
| 176 | ||
| d8aff077 GM |
177 | (defun vc-rcs-workfile-version (file) |
| 178 | "RCS-specific version of `vc-workfile-version'." | |
| 179 | (or (and vc-consult-headers | |
| 180 | (vc-rcs-consult-headers file) | |
| 181 | (vc-file-getprop file 'vc-workfile-version)) | |
| 182 | (progn | |
| 183 | (vc-rcs-fetch-master-state file) | |
| 184 | (vc-file-getprop file 'vc-workfile-version)))) | |
| 185 | ||
| 186 | (defun vc-rcs-checkout-model (file) | |
| 187 | "RCS-specific version of `vc-checkout-model'." | |
| 188 | (vc-rcs-consult-headers file) | |
| 189 | (or (vc-file-getprop file 'vc-checkout-model) | |
| 190 | (progn (vc-rcs-fetch-master-state file) | |
| 191 | (vc-file-getprop file 'vc-checkout-model)))) | |
| 192 | ||
| 193 | ;;; internal code | |
| 194 | ||
| 195 | (defun vc-rcs-find-most-recent-rev (branch) | |
| 196 | "Find most recent revision on BRANCH." | |
| 197 | (goto-char (point-min)) | |
| 198 | (let ((latest-rev -1) value) | |
| 199 | (while (re-search-forward (concat "^\\(" (regexp-quote branch) | |
| 200 | "\\.\\([0-9]+\\)\\)\ndate[ \t]+[0-9.]+;") | |
| 201 | nil t) | |
| 202 | (let ((rev (string-to-number (match-string 2)))) | |
| 203 | (when (< latest-rev rev) | |
| 204 | (setq latest-rev rev) | |
| 205 | (setq value (match-string 1))))) | |
| 0db2c43c AS |
206 | (or value |
| 207 | (vc-rcs-branch-part branch)))) | |
| d8aff077 GM |
208 | |
| 209 | (defun vc-rcs-fetch-master-state (file &optional workfile-version) | |
| 33c1b7a1 DL |
210 | "Compute the master file's idea of the state of FILE. |
| 211 | If a WORKFILE-VERSION is given, compute the state of that version, | |
| d8aff077 GM |
212 | otherwise determine the workfile version based on the master file. |
| 213 | This function sets the properties `vc-workfile-version' and | |
| 214 | `vc-checkout-model' to their correct values, based on the master | |
| 215 | file." | |
| 216 | (with-temp-buffer | |
| 217 | (vc-insert-file (vc-name file) "^[0-9]") | |
| a7e98271 AS |
218 | (let ((workfile-is-latest nil) |
| 219 | (default-branch (vc-parse-buffer "^branch[ \t\n]+\\([^;]*\\);" 1))) | |
| 220 | (vc-file-setprop file 'vc-rcs-default-branch default-branch) | |
| d8aff077 | 221 | (unless workfile-version |
| a7e98271 AS |
222 | ;; Workfile version not known yet. Determine that first. It |
| 223 | ;; is either the head of the trunk, the head of the default | |
| 224 | ;; branch, or the "default branch" itself, if that is a full | |
| 225 | ;; revision number. | |
| 226 | (cond | |
| 227 | ;; no default branch | |
| 228 | ((or (not default-branch) (string= "" default-branch)) | |
| 229 | (setq workfile-version | |
| 230 | (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1)) | |
| 231 | (setq workfile-is-latest t)) | |
| 232 | ;; default branch is actually a revision | |
| 233 | ((string-match "^[0-9]+\\.[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*$" | |
| 234 | default-branch) | |
| 235 | (setq workfile-version default-branch)) | |
| 236 | ;; else, search for the head of the default branch | |
| 237 | (t (vc-insert-file (vc-name file) "^desc") | |
| d8aff077 | 238 | (setq workfile-version |
| a7e98271 AS |
239 | (vc-rcs-find-most-recent-rev default-branch)) |
| 240 | (setq workfile-is-latest t))) | |
| 241 | (vc-file-setprop file 'vc-workfile-version workfile-version)) | |
| d8aff077 GM |
242 | ;; Check strict locking |
| 243 | (goto-char (point-min)) | |
| 244 | (vc-file-setprop file 'vc-checkout-model | |
| 245 | (if (re-search-forward ";[ \t\n]*strict;" nil t) | |
| 246 | 'locking 'implicit)) | |
| 247 | ;; Compute state of workfile version | |
| 248 | (goto-char (point-min)) | |
| 249 | (let ((locking-user | |
| 250 | (vc-parse-buffer (concat "^locks[ \t\n]+[^;]*[ \t\n]+\\([^:]+\\):" | |
| 251 | (regexp-quote workfile-version) | |
| 252 | "[^0-9.]") | |
| 253 | 1))) | |
| 254 | (cond | |
| 255 | ;; not locked | |
| 256 | ((not locking-user) | |
| 33c1b7a1 | 257 | (if (or workfile-is-latest |
| d8aff077 GM |
258 | (vc-rcs-latest-on-branch-p file workfile-version)) |
| 259 | ;; workfile version is latest on branch | |
| 0db2c43c AS |
260 | (if (eq (vc-checkout-model file) 'locking) |
| 261 | 'up-to-date | |
| 262 | (require 'vc) | |
| 263 | (if (vc-workfile-unchanged-p file) | |
| 264 | 'up-to-date | |
| 265 | 'edited)) | |
| d8aff077 GM |
266 | ;; workfile version is not latest on branch |
| 267 | 'needs-patch)) | |
| 268 | ;; locked by the calling user | |
| 269 | ((and (stringp locking-user) | |
| 270 | (string= locking-user (vc-user-login-name))) | |
| 271 | (if (or (eq (vc-checkout-model file) 'locking) | |
| 272 | workfile-is-latest | |
| 273 | (vc-rcs-latest-on-branch-p file workfile-version)) | |
| 274 | 'edited | |
| 275 | ;; Locking is not used for the file, but the owner does | |
| 276 | ;; have a lock, and there is a higher version on the current | |
| 277 | ;; branch. Not sure if this can occur, and if it is right | |
| 278 | ;; to use `needs-merge' in this case. | |
| 279 | 'needs-merge)) | |
| 280 | ;; locked by somebody else | |
| 281 | ((stringp locking-user) | |
| 282 | locking-user) | |
| 283 | (t | |
| 284 | (error "Error getting state of RCS file"))))))) | |
| 285 | ||
| 286 | (defun vc-rcs-consult-headers (file) | |
| 287 | "Search for RCS headers in FILE, and set properties accordingly. | |
| 288 | ||
| 289 | Returns: nil if no headers were found | |
| 290 | 'rev if a workfile revision was found | |
| 291 | 'rev-and-lock if revision and lock info was found" | |
| 292 | (cond | |
| 293 | ((not (get-file-buffer file)) nil) | |
| 294 | ((let (status version locking-user) | |
| 295 | (save-excursion | |
| 296 | (set-buffer (get-file-buffer file)) | |
| 297 | (goto-char (point-min)) | |
| 298 | (cond | |
| 299 | ;; search for $Id or $Header | |
| 300 | ;; ------------------------- | |
| 301 | ;; The `\ 's below avoid an RCS 5.7 bug when checking in this file. | |
| 302 | ((or (and (search-forward "$Id\ : " nil t) | |
| 303 | (looking-at "[^ ]+ \\([0-9.]+\\) ")) | |
| 304 | (and (progn (goto-char (point-min)) | |
| 305 | (search-forward "$Header\ : " nil t)) | |
| 306 | (looking-at "[^ ]+ \\([0-9.]+\\) "))) | |
| 307 | (goto-char (match-end 0)) | |
| 308 | ;; if found, store the revision number ... | |
| 309 | (setq version (match-string-no-properties 1)) | |
| 310 | ;; ... and check for the locking state | |
| 311 | (cond | |
| 312 | ((looking-at | |
| 313 | (concat "[0-9]+[/-][01][0-9][/-][0-3][0-9] " ; date | |
| 314 | "[0-2][0-9]:[0-5][0-9]+:[0-6][0-9]+\\([+-][0-9:]+\\)? " ; time | |
| 315 | "[^ ]+ [^ ]+ ")) ; author & state | |
| 316 | (goto-char (match-end 0)) ; [0-6] in regexp handles leap seconds | |
| 317 | (cond | |
| 318 | ;; unlocked revision | |
| 319 | ((looking-at "\\$") | |
| 320 | (setq locking-user 'none) | |
| 321 | (setq status 'rev-and-lock)) | |
| 322 | ;; revision is locked by some user | |
| 323 | ((looking-at "\\([^ ]+\\) \\$") | |
| 324 | (setq locking-user (match-string-no-properties 1)) | |
| 325 | (setq status 'rev-and-lock)) | |
| 326 | ;; everything else: false | |
| 327 | (nil))) | |
| 328 | ;; unexpected information in | |
| 329 | ;; keyword string --> quit | |
| 330 | (nil))) | |
| 331 | ;; search for $Revision | |
| 332 | ;; -------------------- | |
| 333 | ((re-search-forward (concat "\\$" | |
| 334 | "Revision: \\([0-9.]+\\) \\$") | |
| 335 | nil t) | |
| 336 | ;; if found, store the revision number ... | |
| 337 | (setq version (match-string-no-properties 1)) | |
| 338 | ;; and see if there's any lock information | |
| 339 | (goto-char (point-min)) | |
| 340 | (if (re-search-forward (concat "\\$" "Locker:") nil t) | |
| 341 | (cond ((looking-at " \\([^ ]+\\) \\$") | |
| 342 | (setq locking-user (match-string-no-properties 1)) | |
| 343 | (setq status 'rev-and-lock)) | |
| 344 | ((looking-at " *\\$") | |
| 345 | (setq locking-user 'none) | |
| 346 | (setq status 'rev-and-lock)) | |
| 347 | (t | |
| 348 | (setq locking-user 'none) | |
| 349 | (setq status 'rev-and-lock))) | |
| 350 | (setq status 'rev))) | |
| 351 | ;; else: nothing found | |
| 352 | ;; ------------------- | |
| 353 | (t nil))) | |
| 354 | (if status (vc-file-setprop file 'vc-workfile-version version)) | |
| 355 | (and (eq status 'rev-and-lock) | |
| 356 | (vc-file-setprop file 'vc-state | |
| 357 | (cond | |
| 358 | ((eq locking-user 'none) 'up-to-date) | |
| 359 | ((string= locking-user (vc-user-login-name)) 'edited) | |
| 360 | (t locking-user))) | |
| 361 | ;; If the file has headers, we don't want to query the | |
| 362 | ;; master file, because that would eliminate all the | |
| 363 | ;; performance gain the headers brought us. We therefore | |
| 364 | ;; use a heuristic now to find out whether locking is used | |
| 365 | ;; for this file. If we trust the file permissions, and the | |
| 366 | ;; file is not locked, then if the file is read-only we | |
| 367 | ;; assume that locking is used for the file, otherwise | |
| 368 | ;; locking is not used. | |
| 369 | (not (vc-mistrust-permissions file)) | |
| 370 | (vc-up-to-date-p file) | |
| 371 | (if (string-match ".r-..-..-." (nth 8 (file-attributes file))) | |
| 372 | (vc-file-setprop file 'vc-checkout-model 'locking) | |
| 373 | (vc-file-setprop file 'vc-checkout-model 'implicit))) | |
| 374 | status)))) | |
| 375 | ||
| 376 | (defun vc-rcs-workfile-unchanged-p (file) | |
| 377 | "RCS-specific implementation of vc-workfile-unchanged-p." | |
| 378 | ;; Try to use rcsdiff --brief. If rcsdiff does not understand that, | |
| 379 | ;; do a double take and remember the fact for the future | |
| 380 | (let* ((version (concat "-r" (vc-workfile-version file))) | |
| 381 | (status (if (eq vc-rcsdiff-knows-brief 'no) | |
| 382 | (vc-do-command nil 1 "rcsdiff" file version) | |
| 383 | (vc-do-command nil 2 "rcsdiff" file "--brief" version)))) | |
| 384 | (if (eq status 2) | |
| 385 | (if (not vc-rcsdiff-knows-brief) | |
| 386 | (setq vc-rcsdiff-knows-brief 'no | |
| 387 | status (vc-do-command nil 1 "rcsdiff" file version)) | |
| 388 | (error "rcsdiff failed")) | |
| 389 | (if (not vc-rcsdiff-knows-brief) (setq vc-rcsdiff-knows-brief 'yes))) | |
| 390 | ;; The workfile is unchanged if rcsdiff found no differences. | |
| 391 | (zerop status))) | |
| 392 | ||
| 393 | (defun vc-rcs-trunk-p (rev) | |
| 394 | "Return t if REV is an RCS revision on the trunk." | |
| 395 | (not (eq nil (string-match "\\`[0-9]+\\.[0-9]+\\'" rev)))) | |
| 396 | ||
| 397 | (defun vc-rcs-branch-part (rev) | |
| 398 | "Return the branch part of an RCS revision number REV" | |
| 399 | (substring rev 0 (string-match "\\.[0-9]+\\'" rev))) | |
| 400 | ||
| 401 | (defun vc-rcs-latest-on-branch-p (file &optional version) | |
| 402 | "Return non-nil if workfile version of FILE is the latest on its branch. | |
| 403 | When VERSION is given, perform check for that version." | |
| 404 | (unless version (setq version (vc-workfile-version file))) | |
| 405 | (with-temp-buffer | |
| 406 | (string= version | |
| 407 | (if (vc-rcs-trunk-p version) | |
| 408 | (progn | |
| 409 | ;; Compare VERSION to the head version number. | |
| 410 | (vc-insert-file (vc-name file) "^[0-9]") | |
| 411 | (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1)) | |
| 412 | ;; If we are not on the trunk, we need to examine the | |
| 413 | ;; whole current branch. | |
| 414 | (vc-insert-file (vc-name file) "^desc") | |
| 415 | (vc-rcs-find-most-recent-rev (vc-rcs-branch-part version)))))) | |
| 416 | \f | |
| 417 | (defun vc-rcs-branch-p (rev) | |
| 418 | "Return t if REV is an RCS branch revision" | |
| 419 | (not (eq nil (string-match "\\`[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*\\'" rev)))) | |
| 420 | ||
| 421 | (defun vc-rcs-minor-part (rev) | |
| 422 | "Return the minor version number of an RCS revision number REV." | |
| 423 | (string-match "[0-9]+\\'" rev) | |
| 424 | (substring rev (match-beginning 0) (match-end 0))) | |
| 425 | ||
| 426 | (defun vc-rcs-previous-version (rev) | |
| 427 | "Guess the previous RCS version number" | |
| 428 | (let ((branch (vc-rcs-branch-part rev)) | |
| 429 | (minor-num (string-to-number (vc-rcs-minor-part rev)))) | |
| 430 | (if (> minor-num 1) | |
| 431 | ;; version does probably not start a branch or release | |
| 432 | (concat branch "." (number-to-string (1- minor-num))) | |
| 433 | (if (vc-rcs-trunk-p rev) | |
| 434 | ;; we are at the beginning of the trunk -- | |
| 435 | ;; don't know anything to return here | |
| 436 | "" | |
| 437 | ;; we are at the beginning of a branch -- | |
| 438 | ;; return version of starting point | |
| 439 | (vc-rcs-branch-part branch))))) | |
| 440 | ||
| 441 | (defun vc-rcs-print-log (file) | |
| 442 | "Get change log associated with FILE." | |
| 443 | (vc-do-command t 0 "rlog" (vc-name file))) | |
| 444 | ||
| 445 | (defun vc-rcs-show-log-entry (version) | |
| 446 | (when (re-search-forward | |
| 447 | ;; also match some context, for safety | |
| 448 | (concat "----\nrevision " version | |
| 449 | "\\(\tlocked by:.*\n\\|\n\\)date: ") nil t) | |
| 450 | ;; set the display window so that | |
| 451 | ;; the whole log entry is displayed | |
| 452 | (let (start end lines) | |
| 453 | (beginning-of-line) (forward-line -1) (setq start (point)) | |
| 454 | (if (not (re-search-forward "^----*\nrevision" nil t)) | |
| 455 | (setq end (point-max)) | |
| 456 | (beginning-of-line) (forward-line -1) (setq end (point))) | |
| 457 | (setq lines (count-lines start end)) | |
| 458 | (cond | |
| 459 | ;; if the global information and this log entry fit | |
| 460 | ;; into the window, display from the beginning | |
| 461 | ((< (count-lines (point-min) end) (window-height)) | |
| 462 | (goto-char (point-min)) | |
| 463 | (recenter 0) | |
| 464 | (goto-char start)) | |
| 465 | ;; if the whole entry fits into the window, | |
| 466 | ;; display it centered | |
| 467 | ((< (1+ lines) (window-height)) | |
| 468 | (goto-char start) | |
| 469 | (recenter (1- (- (/ (window-height) 2) (/ lines 2))))) | |
| 470 | ;; otherwise (the entry is too large for the window), | |
| 471 | ;; display from the start | |
| 472 | (t | |
| 473 | (goto-char start) | |
| 474 | (recenter 0)))))) | |
| 475 | ||
| 476 | (defun vc-rcs-assign-name (file name) | |
| 477 | "Assign to FILE's latest version a given NAME." | |
| 478 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-n" name ":"))) | |
| 479 | ||
| 480 | (defun vc-rcs-merge (file first-version &optional second-version) | |
| 481 | "Merge changes into current working copy of FILE. | |
| 482 | The changes are between FIRST-VERSION and SECOND-VERSION." | |
| 483 | (vc-do-command nil 1 "rcsmerge" (vc-name file) | |
| 484 | "-kk" ; ignore keyword conflicts | |
| 485 | (concat "-r" first-version) | |
| 486 | (if second-version (concat "-r" second-version)))) | |
| 487 | ||
| 488 | (defun vc-rcs-check-headers () | |
| 489 | "Check if the current file has any headers in it." | |
| 490 | (save-excursion | |
| 491 | (goto-char (point-min)) | |
| 492 | (re-search-forward "\\$[A-Za-z\300-\326\330-\366\370-\377]+\ | |
| 493 | \\(: [\t -#%-\176\240-\377]*\\)?\\$" nil t))) | |
| 494 | ||
| 495 | (defun vc-rcs-clear-headers () | |
| 496 | "Implementation of vc-clear-headers for RCS." | |
| 497 | (let ((case-fold-search nil)) | |
| 498 | (goto-char (point-min)) | |
| 499 | (while (re-search-forward | |
| 500 | (concat "\\$\\(Author\\|Date\\|Header\\|Id\\|Locker\\|Name\\|" | |
| 501 | "RCSfile\\|Revision\\|Source\\|State\\): [^$\n]+\\$") | |
| 502 | nil t) | |
| 503 | (replace-match "$\\1$")))) | |
| 504 | ||
| 505 | (defun vc-rcs-steal-lock (file &optional rev) | |
| 506 | "Steal the lock on the current workfile for FILE and revision REV. | |
| 507 | Needs RCS 5.6.2 or later for -M." | |
| 508 | (vc-do-command nil 0 "rcs" (vc-name file) "-M" | |
| 509 | (concat "-u" rev) (concat "-l" rev))) | |
| 510 | ||
| 099bd78a SM |
511 | (defun vc-rcs-cancel-version (file writable) |
| 512 | "Undo the most recent checkin of FILE. | |
| 513 | WRITABLE non-nil means previous version should be locked." | |
| 514 | (let* ((target (vc-workfile-version file)) | |
| 515 | (previous (if (vc-trunk-p target) "" (vc-branch-part target))) | |
| 516 | (config (current-window-configuration)) | |
| 517 | (done nil)) | |
| 518 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-o" target)) | |
| 519 | ;; Check out the most recent remaining version. If it fails, because | |
| 520 | ;; the whole branch got deleted, do a double-take and check out the | |
| 521 | ;; version where the branch started. | |
| 522 | (while (not done) | |
| 523 | (condition-case err | |
| 524 | (progn | |
| 525 | (vc-do-command nil 0 "co" (vc-name file) "-f" | |
| 526 | (concat (if writable "-l" "-u") previous)) | |
| 527 | (setq done t)) | |
| 528 | (error (set-buffer "*vc*") | |
| 529 | (goto-char (point-min)) | |
| 530 | (if (search-forward "no side branches present for" nil t) | |
| 531 | (progn (setq previous (vc-branch-part previous)) | |
| a7e98271 | 532 | (vc-rcs-set-default-branch file previous) |
| 099bd78a SM |
533 | ;; vc-do-command popped up a window with |
| 534 | ;; the error message. Get rid of it, by | |
| 535 | ;; restoring the old window configuration. | |
| 536 | (set-window-configuration config)) | |
| 537 | ;; No, it was some other error: re-signal it. | |
| 538 | (signal (car err) (cdr err)))))))) | |
| d8aff077 GM |
539 | |
| 540 | (defun vc-rcs-revert (file) | |
| 541 | "Revert FILE to the version it was based on." | |
| 542 | (vc-do-command nil 0 "co" (vc-name file) "-f" | |
| 543 | (concat "-u" (vc-workfile-version file)))) | |
| 544 | ||
| 545 | (defun vc-rcs-rename-file (old new) | |
| 546 | ;; Just move the master file (using vc-rcs-master-templates). | |
| 547 | (vc-rename-master (vc-name old) new vc-rcs-master-templates)) | |
| 548 | ||
| 549 | (defun vc-release-greater-or-equal (r1 r2) | |
| 33c1b7a1 DL |
550 | "Compare release numbers, represented as strings. |
| 551 | Release components are assumed cardinal numbers, not decimal fractions | |
| 552 | \(5.10 is a higher release than 5.9\). Omitted fields are considered | |
| 553 | lower \(5.6.7 is earlier than 5.6.7.1\). Comparison runs till the end | |
| 554 | of the string is found, or a non-numeric component shows up \(5.6.7 is | |
| d8aff077 GM |
555 | earlier than \"5.6.7 beta\", which is probably not what you want in |
| 556 | some cases\). This code is suitable for existing RCS release numbers. | |
| 557 | CVS releases are handled reasonably, too \(1.3 < 1.4* < 1.5\)." | |
| 558 | (let (v1 v2 i1 i2) | |
| 559 | (catch 'done | |
| 560 | (or (and (string-match "^\\.?\\([0-9]+\\)" r1) | |
| 561 | (setq i1 (match-end 0)) | |
| 562 | (setq v1 (string-to-number (match-string 1 r1))) | |
| 563 | (or (and (string-match "^\\.?\\([0-9]+\\)" r2) | |
| 564 | (setq i2 (match-end 0)) | |
| 565 | (setq v2 (string-to-number (match-string 1 r2))) | |
| 566 | (if (> v1 v2) (throw 'done t) | |
| 567 | (if (< v1 v2) (throw 'done nil) | |
| 568 | (throw 'done | |
| 569 | (vc-release-greater-or-equal | |
| 570 | (substring r1 i1) | |
| 571 | (substring r2 i2))))))) | |
| 572 | (throw 'done t))) | |
| 573 | (or (and (string-match "^\\.?\\([0-9]+\\)" r2) | |
| 574 | (throw 'done nil)) | |
| 575 | (throw 'done t))))) | |
| 576 | ||
| 577 | (defun vc-rcs-release-p (release) | |
| 33c1b7a1 | 578 | "Return t if we have RELEASE or better." |
| d8aff077 GM |
579 | (let ((installation (vc-rcs-system-release))) |
| 580 | (if (and installation | |
| 581 | (not (eq installation 'unknown))) | |
| 582 | (vc-release-greater-or-equal installation release)))) | |
| 583 | ||
| 584 | (defun vc-rcs-checkin (file rev comment) | |
| 585 | "RCS-specific version of `vc-backend-checkin'." | |
| d8aff077 GM |
586 | (let ((switches (if (stringp vc-checkin-switches) |
| 587 | (list vc-checkin-switches) | |
| 588 | vc-checkin-switches))) | |
| a7e98271 AS |
589 | (let ((old-version (vc-workfile-version file)) new-version |
| 590 | (default-branch (vc-file-getprop file 'vc-rcs-default-branch))) | |
| 591 | ;; Force branch creation if an appropriate | |
| 592 | ;; default branch has been set. | |
| 593 | (and (not rev) | |
| 594 | default-branch | |
| 595 | (string-match (concat "^" (regexp-quote old-version) "\\.") | |
| 596 | default-branch) | |
| 597 | (setq rev default-branch) | |
| 598 | (setq switches (cons "-f" switches))) | |
| d8aff077 GM |
599 | (apply 'vc-do-command nil 0 "ci" (vc-name file) |
| 600 | ;; if available, use the secure check-in option | |
| 601 | (and (vc-rcs-release-p "5.6.4") "-j") | |
| 602 | (concat (if vc-keep-workfiles "-u" "-r") rev) | |
| 603 | (concat "-m" comment) | |
| 604 | switches) | |
| 605 | (vc-file-setprop file 'vc-workfile-version nil) | |
| 606 | ||
| 607 | ;; determine the new workfile version | |
| 608 | (set-buffer "*vc*") | |
| 609 | (goto-char (point-min)) | |
| 610 | (when (or (re-search-forward | |
| 611 | "new revision: \\([0-9.]+\\);" nil t) | |
| 612 | (re-search-forward | |
| 613 | "reverting to previous revision \\([0-9.]+\\)" nil t)) | |
| 614 | (setq new-version (match-string 1)) | |
| 615 | (vc-file-setprop file 'vc-workfile-version new-version)) | |
| 616 | ||
| 617 | ;; if we got to a different branch, adjust the default | |
| 618 | ;; branch accordingly | |
| 619 | (cond | |
| 620 | ((and old-version new-version | |
| 621 | (not (string= (vc-rcs-branch-part old-version) | |
| 622 | (vc-rcs-branch-part new-version)))) | |
| a7e98271 AS |
623 | (vc-rcs-set-default-branch file |
| 624 | (if (vc-rcs-trunk-p new-version) nil | |
| 625 | (vc-rcs-branch-part new-version))) | |
| d8aff077 GM |
626 | ;; If this is an old RCS release, we might have |
| 627 | ;; to remove a remaining lock. | |
| 628 | (if (not (vc-rcs-release-p "5.6.2")) | |
| 629 | ;; exit status of 1 is also accepted. | |
| 630 | ;; It means that the lock was removed before. | |
| 631 | (vc-do-command nil 1 "rcs" (vc-name file) | |
| 632 | (concat "-u" old-version)))))))) | |
| 633 | ||
| 634 | (defun vc-rcs-system-release () | |
| 635 | "Return the RCS release installed on this system, as a string. | |
| 636 | Return symbol UNKNOWN if the release cannot be deducted. The user can | |
| 637 | override this using variable `vc-rcs-release'. | |
| 638 | ||
| 639 | If the user has not set variable `vc-rcs-release' and it is nil, | |
| 640 | variable `vc-rcs-release' is set to the returned value." | |
| 641 | (or vc-rcs-release | |
| 642 | (setq vc-rcs-release | |
| 643 | (or (and (zerop (vc-do-command nil nil "rcs" nil "-V")) | |
| 644 | (with-current-buffer (get-buffer "*vc*") | |
| 645 | (vc-parse-buffer "^RCS version \\([0-9.]+ *.*\\)" 1))) | |
| 646 | 'unknown)))) | |
| 647 | ||
| 648 | (defun vc-rcs-diff (file &optional oldvers newvers) | |
| 649 | "Get a difference report using RCS between two versions of FILE." | |
| 650 | (if (not oldvers) (setq oldvers (vc-workfile-version file))) | |
| 651 | ;; If we know that --brief is not supported, don't try it. | |
| 652 | (let* ((diff-switches-list (if (listp diff-switches) | |
| 653 | diff-switches | |
| 654 | (list diff-switches))) | |
| 655 | (options (append (list "-q" | |
| 656 | (concat "-r" oldvers) | |
| 657 | (and newvers (concat "-r" newvers))) | |
| 658 | diff-switches-list))) | |
| 659 | (apply 'vc-do-command t 1 "rcsdiff" file options))) | |
| 660 | ||
| 661 | (defun vc-rcs-responsible-p (file) | |
| 662 | "Return non-nil if RCS thinks it would be responsible for registering FILE." | |
| 663 | ;; TODO: check for all the patterns in vc-rcs-master-templates | |
| 664 | (file-directory-p (expand-file-name "RCS" (file-name-directory file)))) | |
| 665 | ||
| 666 | (defun vc-rcs-register (file &optional rev comment) | |
| 667 | "Register FILE into the RCS version-control system. | |
| 668 | REV is the optional revision number for the file. COMMENT can be used | |
| 669 | to provide an initial description of FILE. | |
| 670 | ||
| 671 | `vc-register-switches' and `vc-rcs-register-switches' are passed to | |
| 672 | the RCS command (in that order). | |
| 673 | ||
| 674 | Automatically retrieve a read-only version of the file with keywords | |
| 675 | expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." | |
| d8aff077 GM |
676 | (let ((subdir (expand-file-name "RCS" (file-name-directory file))) |
| 677 | (switches (list | |
| 678 | (if (stringp vc-register-switches) | |
| 679 | (list vc-register-switches) | |
| 680 | vc-register-switches) | |
| 681 | (if (stringp vc-rcs-register-switches) | |
| 682 | (list vc-rcs-register-switches) | |
| 683 | vc-rcs-register-switches)))) | |
| 684 | ||
| 685 | (and (not (file-exists-p subdir)) | |
| 686 | (not (directory-files (file-name-directory file) | |
| 687 | nil ".*,v$" t)) | |
| 688 | (yes-or-no-p "Create RCS subdirectory? ") | |
| 689 | (make-directory subdir)) | |
| 690 | (apply 'vc-do-command nil 0 "ci" file | |
| 691 | ;; if available, use the secure registering option | |
| 692 | (and (vc-rcs-release-p "5.6.4") "-i") | |
| 693 | (concat (if vc-keep-workfiles "-u" "-r") rev) | |
| 694 | (and comment (concat "-t-" comment)) | |
| 695 | switches) | |
| 696 | ;; parse output to find master file name and workfile version | |
| 697 | (with-current-buffer "*vc*" | |
| 698 | (goto-char (point-min)) | |
| 699 | (let ((name (if (looking-at (concat "^\\(.*\\) <-- " | |
| 700 | (file-name-nondirectory file))) | |
| 701 | (match-string 1)))) | |
| 702 | (if (not name) | |
| 703 | ;; if we couldn't find the master name, | |
| 704 | ;; run vc-rcs-registered to get it | |
| 705 | ;; (will be stored into the vc-name property) | |
| 706 | (vc-rcs-registered file) | |
| 707 | (vc-file-setprop file 'vc-name | |
| 708 | (if (file-name-absolute-p name) | |
| 709 | name | |
| 33c1b7a1 DL |
710 | (expand-file-name |
| 711 | name | |
| d8aff077 GM |
712 | (file-name-directory file)))))) |
| 713 | (vc-file-setprop file 'vc-workfile-version | |
| 33c1b7a1 | 714 | (if (re-search-forward |
| d8aff077 GM |
715 | "^initial revision: \\([0-9.]+\\).*\n" |
| 716 | nil t) | |
| 717 | (match-string 1)))))) | |
| 718 | ||
| 0db2c43c AS |
719 | (defun vc-rcs-unregister (file) |
| 720 | "Unregister FILE from RCS. | |
| 721 | If this leaves the RCS subdirectory empty, ask the user | |
| 722 | whether to remove it." | |
| 723 | (let* ((master (vc-name file)) | |
| 7849e179 SM |
724 | (dir (file-name-directory master)) |
| 725 | (backup-info (find-backup-file-name master))) | |
| 726 | (if (not backup-info) | |
| 727 | (delete-file master) | |
| 728 | (rename-file master (car backup-info) 'ok-if-already-exists) | |
| 729 | (dolist (f (cdr backup-info)) (ignore-errors (delete-file f)))) | |
| 0db2c43c AS |
730 | (and (string= (file-name-nondirectory (directory-file-name dir)) "RCS") |
| 731 | ;; check whether RCS dir is empty, i.e. it does not | |
| 732 | ;; contain any files except "." and ".." | |
| 733 | (not (directory-files dir nil | |
| 734 | "^\\([^.]\\|\\.[^.]\\|\\.\\.[^.]\\).*")) | |
| 735 | (yes-or-no-p (format "Directory %s is empty; remove it? " dir)) | |
| 736 | (delete-directory dir)))) | |
| 737 | ||
| fb0d6a79 | 738 | (defun vc-rcs-receive-file (file rev) |
| 0db2c43c | 739 | "Implementation of receive-file for RCS." |
| fb0d6a79 AS |
740 | (let ((checkout-model (vc-checkout-model file))) |
| 741 | (vc-rcs-register file rev "") | |
| 742 | (when (eq checkout-model 'implicit) | |
| 743 | (vc-rcs-set-non-strict-locking file)) | |
| 744 | (vc-rcs-set-default-branch file (concat rev ".1")))) | |
| 0db2c43c AS |
745 | |
| 746 | (defun vc-rcs-set-non-strict-locking (file) | |
| 747 | (vc-do-command nil 0 "rcs" file "-U") | |
| 748 | (vc-file-setprop file 'vc-checkout-model 'implicit) | |
| 749 | (set-file-modes file (logior (file-modes file) 128))) | |
| 750 | ||
| a7e98271 AS |
751 | (defun vc-rcs-set-default-branch (file branch) |
| 752 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-b" branch)) | |
| 753 | (vc-file-setprop file 'vc-rcs-default-branch branch)) | |
| 754 | ||
| d8aff077 GM |
755 | (defun vc-rcs-checkout (file &optional writable rev workfile) |
| 756 | "Retrieve a copy of a saved version of FILE into a workfile." | |
| 757 | (let ((filename (or workfile file)) | |
| 758 | (file-buffer (get-file-buffer file)) | |
| 759 | switches) | |
| 760 | (message "Checking out %s..." filename) | |
| 761 | (save-excursion | |
| 762 | ;; Change buffers to get local value of vc-checkout-switches. | |
| 763 | (if file-buffer (set-buffer file-buffer)) | |
| 764 | (setq switches (if (stringp vc-checkout-switches) | |
| 765 | (list vc-checkout-switches) | |
| 766 | vc-checkout-switches)) | |
| 767 | ;; Save this buffer's default-directory | |
| 768 | ;; and use save-excursion to make sure it is restored | |
| 769 | ;; in the same buffer it was saved in. | |
| 770 | (let ((default-directory default-directory)) | |
| 771 | (save-excursion | |
| 772 | ;; Adjust the default-directory so that the check-out creates | |
| 773 | ;; the file in the right place. | |
| 774 | (setq default-directory (file-name-directory filename)) | |
| 775 | (if workfile ;; RCS | |
| 776 | ;; RCS can't check out into arbitrary file names directly. | |
| 777 | ;; Use `co -p' and make stdout point to the correct file. | |
| 778 | (let ((vc-modes (logior (file-modes (vc-name file)) | |
| 779 | (if writable 128 0))) | |
| 780 | (failed t)) | |
| 781 | (unwind-protect | |
| 782 | (progn | |
| 783 | (let ((coding-system-for-read 'no-conversion) | |
| 784 | (coding-system-for-write 'no-conversion)) | |
| 785 | (with-temp-file filename | |
| 786 | (apply 'vc-do-command | |
| 787 | (current-buffer) 0 "co" (vc-name file) | |
| 788 | "-q" ;; suppress diagnostic output | |
| 789 | (if writable "-l") | |
| 790 | (concat "-p" rev) | |
| 791 | switches))) | |
| 33c1b7a1 | 792 | (set-file-modes filename |
| d8aff077 GM |
793 | (logior (file-modes (vc-name file)) |
| 794 | (if writable 128 0))) | |
| 795 | (setq failed nil)) | |
| 33c1b7a1 | 796 | (and failed (file-exists-p filename) |
| d8aff077 GM |
797 | (delete-file filename)))) |
| 798 | (let (new-version) | |
| 799 | ;; if we should go to the head of the trunk, | |
| 800 | ;; clear the default branch first | |
| 801 | (and rev (string= rev "") | |
| a7e98271 | 802 | (vc-rcs-set-default-branch file nil)) |
| d8aff077 GM |
803 | ;; now do the checkout |
| 804 | (apply 'vc-do-command | |
| 805 | nil 0 "co" (vc-name file) | |
| 806 | ;; If locking is not strict, force to overwrite | |
| 807 | ;; the writable workfile. | |
| 808 | (if (eq (vc-checkout-model file) 'implicit) "-f") | |
| 809 | (if writable "-l") | |
| 810 | (if rev (concat "-r" rev) | |
| 811 | ;; if no explicit revision was specified, | |
| 812 | ;; check out that of the working file | |
| 813 | (let ((workrev (vc-workfile-version file))) | |
| 814 | (if workrev (concat "-r" workrev) | |
| 815 | nil))) | |
| 816 | switches) | |
| 817 | ;; determine the new workfile version | |
| 818 | (with-current-buffer "*vc*" | |
| 819 | (setq new-version | |
| 820 | (vc-parse-buffer "^revision \\([0-9.]+\\).*\n" 1))) | |
| 821 | (vc-file-setprop file 'vc-workfile-version new-version) | |
| 822 | ;; if necessary, adjust the default branch | |
| 823 | (and rev (not (string= rev "")) | |
| a7e98271 AS |
824 | (vc-rcs-set-default-branch |
| 825 | file | |
| 826 | (if (vc-rcs-latest-on-branch-p file new-version) | |
| 827 | (if (vc-rcs-trunk-p new-version) nil | |
| 828 | (vc-rcs-branch-part new-version)) | |
| 829 | new-version)))))) | |
| d8aff077 GM |
830 | (message "Checking out %s...done" filename))))) |
| 831 | ||
| 832 | (provide 'vc-rcs) | |
| 833 | ||
| 834 | ;;; vc-rcs.el ends here |