HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| d8aff077 GM |
1 | ;;; vc-rcs.el --- support for RCS version-control |
| 2 | ||
| 0d30b337 | 3 | ;; Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, |
| 409cc4a3 | 4 | ;; 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 Free Software Foundation, Inc. |
| d8aff077 GM |
5 | |
| 6 | ;; Author: FSF (see vc.el for full credits) | |
| 7 | ;; Maintainer: Andre Spiegel <spiegel@gnu.org> | |
| 8 | ||
| fa63cb6d | 9 | ;; $Id$ |
| d8aff077 GM |
10 | |
| 11 | ;; This file is part of GNU Emacs. | |
| 12 | ||
| 13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
| 14 | ;; it under the terms of the GNU General Public License as published by | |
| b4aa6026 | 15 | ;; the Free Software Foundation; either version 3, or (at your option) |
| d8aff077 GM |
16 | ;; any later version. |
| 17 | ||
| 18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
| 19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 21 | ;; GNU General Public License for more details. | |
| 22 | ||
| 23 | ;; You should have received a copy of the GNU General Public License | |
| 24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
| 086add15 LK |
25 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
| 26 | ;; Boston, MA 02110-1301, USA. | |
| d8aff077 | 27 | |
| e8af40ee PJ |
28 | ;;; Commentary: |
| 29 | ||
| 30 | ;; See vc.el | |
| d8aff077 | 31 | |
| 0792fdb4 SM |
32 | ;; TODO: |
| 33 | ;; - remove call to vc-expand-dirs by implementing our own (which can just | |
| 34 | ;; list the RCS subdir instead). | |
| 35 | ||
| d8aff077 GM |
36 | ;;; Code: |
| 37 | ||
| 8f98485f AS |
38 | ;;; |
| 39 | ;;; Customization options | |
| 40 | ;;; | |
| 41 | ||
| 0bc58756 | 42 | (eval-when-compile |
| 10489ed7 AS |
43 | (require 'cl) |
| 44 | (require 'vc)) | |
| 0bc58756 | 45 | |
| d8aff077 GM |
46 | (defcustom vc-rcs-release nil |
| 47 | "*The release number of your RCS installation, as a string. | |
| 48 | If nil, VC itself computes this value when it is first needed." | |
| 49 | :type '(choice (const :tag "Auto" nil) | |
| 50 | (string :tag "Specified") | |
| 51 | (const :tag "Unknown" unknown)) | |
| 52 | :group 'vc) | |
| 53 | ||
| 54 | (defcustom vc-rcs-register-switches nil | |
| 33c1b7a1 DL |
55 | "*Extra switches for registering a file in RCS. |
| 56 | A string or list of strings. These are passed to the checkin program | |
| 57 | by \\[vc-rcs-register]." | |
| d8aff077 GM |
58 | :type '(choice (const :tag "None" nil) |
| 59 | (string :tag "Argument String") | |
| 60 | (repeat :tag "Argument List" | |
| 61 | :value ("") | |
| 62 | string)) | |
| 33c1b7a1 | 63 | :version "21.1" |
| d8aff077 GM |
64 | :group 'vc) |
| 65 | ||
| 10489ed7 AS |
66 | (defcustom vc-rcs-diff-switches nil |
| 67 | "*A string or list of strings specifying extra switches for rcsdiff under VC." | |
| 68 | :type '(choice (const :tag "None" nil) | |
| 69 | (string :tag "Argument String") | |
| 70 | (repeat :tag "Argument List" | |
| 71 | :value ("") | |
| 72 | string)) | |
| 73 | :version "21.1" | |
| 74 | :group 'vc) | |
| 75 | ||
| d8aff077 GM |
76 | (defcustom vc-rcs-header (or (cdr (assoc 'RCS vc-header-alist)) '("\$Id\$")) |
| 77 | "*Header keywords to be inserted by `vc-insert-headers'." | |
| f0e7c067 | 78 | :type '(repeat 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 | ||
| 8f98485f | 102 | \f |
| 8cdd17b4 ER |
103 | ;;; Properties of the backend |
| 104 | ||
| 70e2f6c7 ER |
105 | (defun vc-rcs-revision-granularity () 'file) |
| 106 | ||
| 107 | (defun vc-rcs-checkout-model (files) | |
| 108 | "RCS-specific version of `vc-checkout-model'." | |
| 109 | (let ((file (if (consp files) (car files) files)) | |
| 110 | result) | |
| 111 | (when vc-consult-headers | |
| 112 | (vc-file-setprop file 'vc-checkout-model nil) | |
| 113 | (vc-rcs-consult-headers file) | |
| 114 | (setq result (vc-file-getprop file 'vc-checkout-model))) | |
| 115 | (or result | |
| 116 | (progn (vc-rcs-fetch-master-state file) | |
| 117 | (vc-file-getprop file 'vc-checkout-model))))) | |
| 8cdd17b4 | 118 | |
| 8f98485f AS |
119 | ;;; |
| 120 | ;;; State-querying functions | |
| 121 | ;;; | |
| 122 | ||
| e0607aaa SM |
123 | ;; The autoload cookie below places vc-rcs-registered directly into |
| 124 | ;; loaddefs.el, so that vc-rcs.el does not need to be loaded for | |
| 125 | ;; every file that is visited. | |
| 126 | ;;;###autoload | |
| 127 | (progn | |
| 128 | (defun vc-rcs-registered (f) (vc-default-registered 'RCS f))) | |
| d8aff077 GM |
129 | |
| 130 | (defun vc-rcs-state (file) | |
| 131 | "Implementation of `vc-state' for RCS." | |
| 15ef1eae | 132 | (if (not (vc-rcs-registered file)) |
| 3702367b ER |
133 | 'unregistered |
| 134 | (or (boundp 'vc-rcs-headers-result) | |
| 135 | (and vc-consult-headers | |
| 136 | (vc-rcs-consult-headers file))) | |
| 137 | (let ((state | |
| 138 | ;; vc-working-revision might not be known; in that case the | |
| 139 | ;; property is nil. vc-rcs-fetch-master-state knows how to | |
| 140 | ;; handle that. | |
| 141 | (vc-rcs-fetch-master-state file | |
| 142 | (vc-file-getprop file | |
| 143 | 'vc-working-revision)))) | |
| 144 | (if (not (eq state 'up-to-date)) | |
| 145 | state | |
| 146 | (if (vc-workfile-unchanged-p file) | |
| 147 | 'up-to-date | |
| 70e2f6c7 | 148 | (if (eq (vc-rcs-checkout-model (list file)) 'locking) |
| 3702367b ER |
149 | 'unlocked-changes |
| 150 | 'edited)))))) | |
| d8aff077 GM |
151 | |
| 152 | (defun vc-rcs-state-heuristic (file) | |
| 153 | "State heuristic for RCS." | |
| 154 | (let (vc-rcs-headers-result) | |
| 155 | (if (and vc-consult-headers | |
| 33c1b7a1 | 156 | (setq vc-rcs-headers-result |
| d8aff077 GM |
157 | (vc-rcs-consult-headers file)) |
| 158 | (eq vc-rcs-headers-result 'rev-and-lock)) | |
| 159 | (let ((state (vc-file-getprop file 'vc-state))) | |
| 160 | ;; If the headers say that the file is not locked, the | |
| 161 | ;; permissions can tell us whether locking is used for | |
| 162 | ;; the file or not. | |
| 163 | (if (and (eq state 'up-to-date) | |
| 164 | (not (vc-mistrust-permissions file))) | |
| 165 | (cond | |
| 166 | ((string-match ".rw..-..-." (nth 8 (file-attributes file))) | |
| 0db2c43c | 167 | (vc-file-setprop file 'vc-checkout-model 'implicit) |
| f1180544 JB |
168 | (setq state |
| 169 | (if (vc-rcs-workfile-is-newer file) | |
| 170 | 'edited | |
| 0db2c43c | 171 | 'up-to-date))) |
| d8aff077 GM |
172 | ((string-match ".r-..-..-." (nth 8 (file-attributes file))) |
| 173 | (vc-file-setprop file 'vc-checkout-model 'locking)))) | |
| 174 | state) | |
| 175 | (if (not (vc-mistrust-permissions file)) | |
| b010f887 AS |
176 | (let* ((attributes (file-attributes file 'string)) |
| 177 | (owner-name (nth 2 attributes)) | |
| d8aff077 GM |
178 | (permissions (nth 8 attributes))) |
| 179 | (cond ((string-match ".r-..-..-." permissions) | |
| 180 | (vc-file-setprop file 'vc-checkout-model 'locking) | |
| 181 | 'up-to-date) | |
| 182 | ((string-match ".rw..-..-." permissions) | |
| e0607aaa | 183 | (if (eq (vc-rcs-checkout-model file) 'locking) |
| 0db2c43c AS |
184 | (if (file-ownership-preserved-p file) |
| 185 | 'edited | |
| b010f887 | 186 | owner-name) |
| f1180544 | 187 | (if (vc-rcs-workfile-is-newer file) |
| 0db2c43c AS |
188 | 'edited |
| 189 | 'up-to-date))) | |
| d8aff077 GM |
190 | (t |
| 191 | ;; Strange permissions. Fall through to | |
| 192 | ;; expensive state computation. | |
| 193 | (vc-rcs-state file)))) | |
| 194 | (vc-rcs-state file))))) | |
| 195 | ||
| c1b51374 | 196 | (defun vc-rcs-dir-status (dir update-function) |
| 5a9de6d0 ER |
197 | ;; Doing individual vc-state calls is painful but tgere |
| 198 | ;; is no better way in RCS-land. | |
| 90e9ca17 DN |
199 | (let ((flist (vc-expand-dirs (list dir))) |
| 200 | (result nil)) | |
| 201 | (dolist (file flist) | |
| 202 | (let ((state (vc-state file)) | |
| 203 | (frel (file-relative-name file))) | |
| 204 | (push (list frel state) result))) | |
| c1b51374 | 205 | (funcall update-function result))) |
| 90e9ca17 | 206 | |
| ac3f4c6f ER |
207 | (defun vc-rcs-working-revision (file) |
| 208 | "RCS-specific version of `vc-working-revision'." | |
| d8aff077 GM |
209 | (or (and vc-consult-headers |
| 210 | (vc-rcs-consult-headers file) | |
| ac3f4c6f | 211 | (vc-file-getprop file 'vc-working-revision)) |
| d8aff077 GM |
212 | (progn |
| 213 | (vc-rcs-fetch-master-state file) | |
| ac3f4c6f | 214 | (vc-file-getprop file 'vc-working-revision)))) |
| d8aff077 | 215 | |
| 8f98485f AS |
216 | (defun vc-rcs-latest-on-branch-p (file &optional version) |
| 217 | "Return non-nil if workfile version of FILE is the latest on its branch. | |
| 218 | When VERSION is given, perform check for that version." | |
| ac3f4c6f | 219 | (unless version (setq version (vc-working-revision file))) |
| 8f98485f AS |
220 | (with-temp-buffer |
| 221 | (string= version | |
| 7735770b | 222 | (if (vc-trunk-p version) |
| 8f98485f AS |
223 | (progn |
| 224 | ;; Compare VERSION to the head version number. | |
| 225 | (vc-insert-file (vc-name file) "^[0-9]") | |
| 226 | (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1)) | |
| 227 | ;; If we are not on the trunk, we need to examine the | |
| 228 | ;; whole current branch. | |
| 229 | (vc-insert-file (vc-name file) "^desc") | |
| 7735770b | 230 | (vc-rcs-find-most-recent-rev (vc-branch-part version)))))) |
| 8f98485f | 231 | |
| d8aff077 | 232 | (defun vc-rcs-workfile-unchanged-p (file) |
| fa63cb6d | 233 | "RCS-specific implementation of `vc-workfile-unchanged-p'." |
| d8aff077 GM |
234 | ;; Try to use rcsdiff --brief. If rcsdiff does not understand that, |
| 235 | ;; do a double take and remember the fact for the future | |
| ac3f4c6f | 236 | (let* ((version (concat "-r" (vc-working-revision file))) |
| d8aff077 GM |
237 | (status (if (eq vc-rcsdiff-knows-brief 'no) |
| 238 | (vc-do-command nil 1 "rcsdiff" file version) | |
| 239 | (vc-do-command nil 2 "rcsdiff" file "--brief" version)))) | |
| 240 | (if (eq status 2) | |
| 241 | (if (not vc-rcsdiff-knows-brief) | |
| 242 | (setq vc-rcsdiff-knows-brief 'no | |
| 243 | status (vc-do-command nil 1 "rcsdiff" file version)) | |
| 244 | (error "rcsdiff failed")) | |
| 245 | (if (not vc-rcsdiff-knows-brief) (setq vc-rcsdiff-knows-brief 'yes))) | |
| 246 | ;; The workfile is unchanged if rcsdiff found no differences. | |
| 247 | (zerop status))) | |
| 248 | ||
| 9d8f43bf SM |
249 | (defun vc-rcs-find-file-not-found-hook () |
| 250 | (if (yes-or-no-p | |
| 251 | (format "File %s was lost; check out from version control? " | |
| 252 | (file-name-nondirectory buffer-file-name))) | |
| 253 | (save-excursion | |
| 254 | (require 'vc) | |
| 255 | (let ((default-directory (file-name-directory buffer-file-name))) | |
| 256 | (not (vc-error-occurred (vc-checkout buffer-file-name))))))) | |
| d8aff077 | 257 | \f |
| 8f98485f AS |
258 | ;;; |
| 259 | ;;; State-changing functions | |
| 260 | ;;; | |
| d8aff077 | 261 | |
| 8cdd17b4 ER |
262 | (defun vc-rcs-create-repo () |
| 263 | "Create a new RCS repository." | |
| 264 | ;; RCS is totally file-oriented, so all we have to do is make the directory | |
| 265 | (make-directory "RCS")) | |
| 266 | ||
| 267 | (defun vc-rcs-register (files &optional rev comment) | |
| 268 | "Register FILES into the RCS version-control system. | |
| 269 | REV is the optional revision number for the files. COMMENT can be used | |
| 270 | to provide an initial description for each FILES. | |
| d8aff077 GM |
271 | |
| 272 | `vc-register-switches' and `vc-rcs-register-switches' are passed to | |
| 273 | the RCS command (in that order). | |
| 274 | ||
| 275 | Automatically retrieve a read-only version of the file with keywords | |
| 276 | expanded if `vc-keep-workfiles' is non-nil, otherwise, delete the workfile." | |
| 09607e62 | 277 | (let (subdir name) |
| 8cdd17b4 | 278 | (dolist (file files) |
| 09607e62 GM |
279 | (and (not (file-exists-p |
| 280 | (setq subdir (expand-file-name "RCS" | |
| 281 | (file-name-directory file))))) | |
| d8aff077 GM |
282 | (not (directory-files (file-name-directory file) |
| 283 | nil ".*,v$" t)) | |
| 284 | (yes-or-no-p "Create RCS subdirectory? ") | |
| 285 | (make-directory subdir)) | |
| 286 | (apply 'vc-do-command nil 0 "ci" file | |
| 287 | ;; if available, use the secure registering option | |
| 288 | (and (vc-rcs-release-p "5.6.4") "-i") | |
| 289 | (concat (if vc-keep-workfiles "-u" "-r") rev) | |
| 290 | (and comment (concat "-t-" comment)) | |
| 3e6bab65 | 291 | (vc-switches 'RCS 'register)) |
| d8aff077 GM |
292 | ;; parse output to find master file name and workfile version |
| 293 | (with-current-buffer "*vc*" | |
| 09607e62 GM |
294 | (goto-char (point-min)) |
| 295 | (if (not (setq name | |
| 296 | (if (looking-at (concat "^\\(.*\\) <-- " | |
| 297 | (file-name-nondirectory file))) | |
| 298 | (match-string 1)))) | |
| 299 | ;; if we couldn't find the master name, | |
| 300 | ;; run vc-rcs-registered to get it | |
| 301 | ;; (will be stored into the vc-name property) | |
| 302 | (vc-rcs-registered file) | |
| 303 | (vc-file-setprop file 'vc-name | |
| 304 | (if (file-name-absolute-p name) | |
| 305 | name | |
| 306 | (expand-file-name | |
| 307 | name | |
| 308 | (file-name-directory file)))))) | |
| 309 | (vc-file-setprop file 'vc-working-revision | |
| 310 | (if (re-search-forward | |
| 311 | "^initial revision: \\([0-9.]+\\).*\n" | |
| 312 | nil t) | |
| 313 | (match-string 1)))))) | |
| d8aff077 | 314 | |
| 8f98485f AS |
315 | (defun vc-rcs-responsible-p (file) |
| 316 | "Return non-nil if RCS thinks it would be responsible for registering FILE." | |
| 317 | ;; TODO: check for all the patterns in vc-rcs-master-templates | |
| 318 | (file-directory-p (expand-file-name "RCS" (file-name-directory file)))) | |
| 319 | ||
| 320 | (defun vc-rcs-receive-file (file rev) | |
| 321 | "Implementation of receive-file for RCS." | |
| 70e2f6c7 | 322 | (let ((checkout-model (vc-rcs-checkout-model (list file)))) |
| 8f98485f AS |
323 | (vc-rcs-register file rev "") |
| 324 | (when (eq checkout-model 'implicit) | |
| 325 | (vc-rcs-set-non-strict-locking file)) | |
| 326 | (vc-rcs-set-default-branch file (concat rev ".1")))) | |
| 327 | ||
| 0db2c43c AS |
328 | (defun vc-rcs-unregister (file) |
| 329 | "Unregister FILE from RCS. | |
| 330 | If this leaves the RCS subdirectory empty, ask the user | |
| 331 | whether to remove it." | |
| 332 | (let* ((master (vc-name file)) | |
| 7849e179 SM |
333 | (dir (file-name-directory master)) |
| 334 | (backup-info (find-backup-file-name master))) | |
| 335 | (if (not backup-info) | |
| 336 | (delete-file master) | |
| 337 | (rename-file master (car backup-info) 'ok-if-already-exists) | |
| 338 | (dolist (f (cdr backup-info)) (ignore-errors (delete-file f)))) | |
| 0db2c43c AS |
339 | (and (string= (file-name-nondirectory (directory-file-name dir)) "RCS") |
| 340 | ;; check whether RCS dir is empty, i.e. it does not | |
| 341 | ;; contain any files except "." and ".." | |
| f1180544 | 342 | (not (directory-files dir nil |
| 0db2c43c AS |
343 | "^\\([^.]\\|\\.[^.]\\|\\.\\.[^.]\\).*")) |
| 344 | (yes-or-no-p (format "Directory %s is empty; remove it? " dir)) | |
| 345 | (delete-directory dir)))) | |
| 346 | ||
| 8cdd17b4 | 347 | (defun vc-rcs-checkin (files rev comment) |
| 8f98485f | 348 | "RCS-specific version of `vc-backend-checkin'." |
| 3e6bab65 | 349 | (let ((switches (vc-switches 'RCS 'checkin))) |
| 8cdd17b4 ER |
350 | ;; Now operate on the files |
| 351 | (dolist (file files) | |
| ac3f4c6f | 352 | (let ((old-version (vc-working-revision file)) new-version |
| 8cdd17b4 ER |
353 | (default-branch (vc-file-getprop file 'vc-rcs-default-branch))) |
| 354 | ;; Force branch creation if an appropriate | |
| 355 | ;; default branch has been set. | |
| 356 | (and (not rev) | |
| 357 | default-branch | |
| 358 | (string-match (concat "^" (regexp-quote old-version) "\\.") | |
| 359 | default-branch) | |
| 360 | (setq rev default-branch) | |
| 361 | (setq switches (cons "-f" switches))) | |
| 362 | (if (and (not rev) old-version) | |
| 363 | (setq rev (vc-branch-part old-version))) | |
| 364 | (apply 'vc-do-command nil 0 "ci" (vc-name file) | |
| 365 | ;; if available, use the secure check-in option | |
| 366 | (and (vc-rcs-release-p "5.6.4") "-j") | |
| 367 | (concat (if vc-keep-workfiles "-u" "-r") rev) | |
| 368 | (concat "-m" comment) | |
| 369 | switches) | |
| ac3f4c6f | 370 | (vc-file-setprop file 'vc-working-revision nil) |
| 8cdd17b4 ER |
371 | |
| 372 | ;; determine the new workfile version | |
| 373 | (set-buffer "*vc*") | |
| 374 | (goto-char (point-min)) | |
| 375 | (when (or (re-search-forward | |
| 376 | "new revision: \\([0-9.]+\\);" nil t) | |
| 377 | (re-search-forward | |
| 378 | "reverting to previous revision \\([0-9.]+\\)" nil t)) | |
| 379 | (setq new-version (match-string 1)) | |
| ac3f4c6f | 380 | (vc-file-setprop file 'vc-working-revision new-version)) |
| 8cdd17b4 ER |
381 | |
| 382 | ;; if we got to a different branch, adjust the default | |
| 383 | ;; branch accordingly | |
| 384 | (cond | |
| 385 | ((and old-version new-version | |
| 386 | (not (string= (vc-branch-part old-version) | |
| 387 | (vc-branch-part new-version)))) | |
| 388 | (vc-rcs-set-default-branch file | |
| 389 | (if (vc-trunk-p new-version) nil | |
| 390 | (vc-branch-part new-version))) | |
| 391 | ;; If this is an old RCS release, we might have | |
| 392 | ;; to remove a remaining lock. | |
| 393 | (if (not (vc-rcs-release-p "5.6.2")) | |
| 394 | ;; exit status of 1 is also accepted. | |
| 395 | ;; It means that the lock was removed before. | |
| 396 | (vc-do-command nil 1 "rcs" (vc-name file) | |
| 397 | (concat "-u" old-version))))))))) | |
| a7e98271 | 398 | |
| ac3f4c6f | 399 | (defun vc-rcs-find-revision (file rev buffer) |
| 88388365 SM |
400 | (apply 'vc-do-command |
| 401 | buffer 0 "co" (vc-name file) | |
| 402 | "-q" ;; suppress diagnostic output | |
| 403 | (concat "-p" rev) | |
| 3e6bab65 | 404 | (vc-switches 'RCS 'checkout))) |
| 88388365 SM |
405 | |
| 406 | (defun vc-rcs-checkout (file &optional editable rev) | |
| 407 | "Retrieve a copy of a saved version of FILE." | |
| 408 | (let ((file-buffer (get-file-buffer file)) | |
| d8aff077 | 409 | switches) |
| 88388365 | 410 | (message "Checking out %s..." file) |
| d8aff077 GM |
411 | (save-excursion |
| 412 | ;; Change buffers to get local value of vc-checkout-switches. | |
| 413 | (if file-buffer (set-buffer file-buffer)) | |
| 3e6bab65 | 414 | (setq switches (vc-switches 'RCS 'checkout)) |
| d8aff077 GM |
415 | ;; Save this buffer's default-directory |
| 416 | ;; and use save-excursion to make sure it is restored | |
| 417 | ;; in the same buffer it was saved in. | |
| 418 | (let ((default-directory default-directory)) | |
| 419 | (save-excursion | |
| 420 | ;; Adjust the default-directory so that the check-out creates | |
| 421 | ;; the file in the right place. | |
| 88388365 SM |
422 | (setq default-directory (file-name-directory file)) |
| 423 | (let (new-version) | |
| 424 | ;; if we should go to the head of the trunk, | |
| 425 | ;; clear the default branch first | |
| 426 | (and rev (string= rev "") | |
| 427 | (vc-rcs-set-default-branch file nil)) | |
| 428 | ;; now do the checkout | |
| 429 | (apply 'vc-do-command | |
| 430 | nil 0 "co" (vc-name file) | |
| 431 | ;; If locking is not strict, force to overwrite | |
| 432 | ;; the writable workfile. | |
| 70e2f6c7 | 433 | (if (eq (vc-rcs-checkout-model (list file)) 'implicit) "-f") |
| 88388365 | 434 | (if editable "-l") |
| a3294a80 AS |
435 | (if (stringp rev) |
| 436 | ;; a literal revision was specified | |
| 437 | (concat "-r" rev) | |
| ac3f4c6f | 438 | (let ((workrev (vc-working-revision file))) |
| a3294a80 | 439 | (if workrev |
| f1180544 | 440 | (concat "-r" |
| a3294a80 AS |
441 | (if (not rev) |
| 442 | ;; no revision specified: | |
| 443 | ;; use current workfile version | |
| 444 | workrev | |
| 445 | ;; REV is t ... | |
| a207e923 | 446 | (if (not (vc-trunk-p workrev)) |
| a3294a80 AS |
447 | ;; ... go to head of current branch |
| 448 | (vc-branch-part workrev) | |
| 449 | ;; ... go to head of trunk | |
| 450 | (vc-rcs-set-default-branch file | |
| 451 | nil) | |
| 452 | "")))))) | |
| 88388365 SM |
453 | switches) |
| 454 | ;; determine the new workfile version | |
| 455 | (with-current-buffer "*vc*" | |
| 456 | (setq new-version | |
| 457 | (vc-parse-buffer "^revision \\([0-9.]+\\).*\n" 1))) | |
| ac3f4c6f | 458 | (vc-file-setprop file 'vc-working-revision new-version) |
| 88388365 SM |
459 | ;; if necessary, adjust the default branch |
| 460 | (and rev (not (string= rev "")) | |
| 3249f234 | 461 | (vc-rcs-set-default-branch |
| 88388365 SM |
462 | file |
| 463 | (if (vc-rcs-latest-on-branch-p file new-version) | |
| 464 | (if (vc-trunk-p new-version) nil | |
| 465 | (vc-branch-part new-version)) | |
| 466 | new-version))))) | |
| 467 | (message "Checking out %s...done" file))))) | |
| d8aff077 | 468 | |
| 8cdd17b4 ER |
469 | (defun vc-rcs-rollback (files) |
| 470 | "Roll back, undoing the most recent checkins of FILES." | |
| 471 | (if (not files) | |
| 472 | (error "RCS backend doesn't support directory-level rollback.")) | |
| 473 | (dolist (file files) | |
| ac3f4c6f | 474 | (let* ((discard (vc-working-revision file)) |
| 8cdd17b4 ER |
475 | (previous (if (vc-trunk-p discard) "" (vc-branch-part discard))) |
| 476 | (config (current-window-configuration)) | |
| 477 | (done nil)) | |
| 72c70417 | 478 | (if (null (yes-or-no-p (format "Remove version %s from %s history? " |
| 8cdd17b4 ER |
479 | discard file))) |
| 480 | (error "Aborted")) | |
| 481 | (message "Removing revision %s from %s." discard file) | |
| 482 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-o" discard)) | |
| 483 | ;; Check out the most recent remaining version. If it | |
| 484 | ;; fails, because the whole branch got deleted, do a | |
| 485 | ;; double-take and check out the version where the branch | |
| 486 | ;; started. | |
| 487 | (while (not done) | |
| 488 | (condition-case err | |
| 489 | (progn | |
| 490 | (vc-do-command nil 0 "co" (vc-name file) "-f" | |
| 491 | (concat "-u" previous)) | |
| 492 | (setq done t)) | |
| 493 | (error (set-buffer "*vc*") | |
| 494 | (goto-char (point-min)) | |
| 495 | (if (search-forward "no side branches present for" nil t) | |
| 496 | (progn (setq previous (vc-branch-part previous)) | |
| 497 | (vc-rcs-set-default-branch file previous) | |
| 498 | ;; vc-do-command popped up a window with | |
| 499 | ;; the error message. Get rid of it, by | |
| 500 | ;; restoring the old window configuration. | |
| 501 | (set-window-configuration config)) | |
| 502 | ;; No, it was some other error: re-signal it. | |
| 503 | (signal (car err) (cdr err))))))))) | |
| 504 | ||
| 99739bbf | 505 | (defun vc-rcs-revert (file &optional contents-done) |
| 8f98485f AS |
506 | "Revert FILE to the version it was based on." |
| 507 | (vc-do-command nil 0 "co" (vc-name file) "-f" | |
| f1180544 | 508 | (concat (if (eq (vc-state file) 'edited) "-u" "-r") |
| ac3f4c6f | 509 | (vc-working-revision file)))) |
| 8f98485f | 510 | |
| 8f98485f AS |
511 | (defun vc-rcs-merge (file first-version &optional second-version) |
| 512 | "Merge changes into current working copy of FILE. | |
| 513 | The changes are between FIRST-VERSION and SECOND-VERSION." | |
| 514 | (vc-do-command nil 1 "rcsmerge" (vc-name file) | |
| 515 | "-kk" ; ignore keyword conflicts | |
| 516 | (concat "-r" first-version) | |
| 517 | (if second-version (concat "-r" second-version)))) | |
| 518 | ||
| 519 | (defun vc-rcs-steal-lock (file &optional rev) | |
| 520 | "Steal the lock on the current workfile for FILE and revision REV. | |
| 521 | Needs RCS 5.6.2 or later for -M." | |
| 7735770b | 522 | (vc-do-command nil 0 "rcs" (vc-name file) "-M" (concat "-u" rev)) |
| f1180544 | 523 | ;; Do a real checkout after stealing the lock, so that we see |
| 7735770b AS |
524 | ;; expanded headers. |
| 525 | (vc-do-command nil 0 "co" (vc-name file) "-f" (concat "-l" rev))) | |
| 8f98485f | 526 | |
| 9b64a7f0 ER |
527 | (defun vc-rcs-modify-change-comment (files rev comment) |
| 528 | "Modify the change comments change on FILES on a specified REV." | |
| 529 | (dolist (file files) | |
| 72c70417 | 530 | (vc-do-command nil 0 "rcs" (vc-name file) |
| 031f1766 | 531 | (concat "-m" rev ":" comment)))) |
| 8f98485f AS |
532 | |
| 533 | \f | |
| 534 | ;;; | |
| 535 | ;;; History functions | |
| 536 | ;;; | |
| 537 | ||
| 8cdd17b4 | 538 | (defun vc-rcs-print-log (files &optional buffer) |
| 8f98485f | 539 | "Get change log associated with FILE." |
| 8cdd17b4 | 540 | (vc-do-command buffer 0 "rlog" (mapcar 'vc-name files))) |
| 8f98485f | 541 | |
| 8cdd17b4 ER |
542 | (defun vc-rcs-diff (files &optional oldvers newvers buffer) |
| 543 | "Get a difference report using RCS between two sets of files." | |
| 72c70417 | 544 | (apply 'vc-do-command (or buffer "*vc-diff*") |
| 8cdd17b4 ER |
545 | 1 ;; Always go synchronous, the repo is local |
| 546 | "rcsdiff" (vc-expand-dirs files) | |
| 10489ed7 | 547 | (append (list "-q" |
| 8cdd17b4 | 548 | (and oldvers (concat "-r" oldvers)) |
| 10489ed7 | 549 | (and newvers (concat "-r" newvers))) |
| 3e6bab65 | 550 | (vc-switches 'RCS 'diff)))) |
| 8f98485f | 551 | |
| 8cdd17b4 ER |
552 | (defun vc-rcs-wash-log () |
| 553 | "Remove all non-comment information from log output." | |
| 554 | (let ((separator (concat "^-+\nrevision [0-9.]+\ndate: .*\n" | |
| 555 | "\\(branches: .*;\n\\)?" | |
| 556 | "\\(\\*\\*\\* empty log message \\*\\*\\*\n\\)?"))) | |
| 557 | (goto-char (point-max)) (forward-line -1) | |
| 558 | (while (looking-at "=*\n") | |
| 559 | (delete-char (- (match-end 0) (match-beginning 0))) | |
| 560 | (forward-line -1)) | |
| 561 | (goto-char (point-min)) | |
| 562 | (if (looking-at "[\b\t\n\v\f\r ]+") | |
| 563 | (delete-char (- (match-end 0) (match-beginning 0)))) | |
| 564 | (goto-char (point-min)) | |
| 565 | (re-search-forward separator nil t) | |
| 566 | (delete-region (point-min) (point)) | |
| 567 | (while (re-search-forward separator nil t) | |
| 568 | (delete-region (match-beginning 0) (match-end 0))))) | |
| 569 | ||
| 3249f234 TTN |
570 | (defun vc-rcs-annotate-command (file buffer &optional revision) |
| 571 | "Annotate FILE, inserting the results in BUFFER. | |
| 572 | Optional arg REVISION is a revision to annotate from." | |
| 903d71fb | 573 | (vc-setup-buffer buffer) |
| 3249f234 TTN |
574 | ;; Aside from the "head revision on the trunk", the instructions for |
| 575 | ;; each revision on the trunk are an ordered list of kill and insert | |
| 576 | ;; commands necessary to go from the chronologically-following | |
| 577 | ;; revision to this one. That is, associated with revision N are | |
| 578 | ;; edits that applied to revision N+1 would result in revision N. | |
| 579 | ;; | |
| 580 | ;; On a branch, however, (some) things are inverted: the commands | |
| 581 | ;; listed are those necessary to go from the chronologically-preceding | |
| 582 | ;; revision to this one. That is, associated with revision N are | |
| 583 | ;; edits that applied to revision N-1 would result in revision N. | |
| 584 | ;; | |
| 585 | ;; So, to get per-line history info, we apply reverse-chronological | |
| 586 | ;; edits, starting with the head revision on the trunk, all the way | |
| 587 | ;; back through the initial revision (typically "1.1" or similar), | |
| 588 | ;; then apply forward-chronological edits -- keeping track of which | |
| 589 | ;; revision is associated with each inserted line -- until we reach | |
| 590 | ;; the desired revision for display (which may be either on the trunk | |
| 591 | ;; or on a branch). | |
| 592 | (let* ((tree (with-temp-buffer | |
| 593 | (insert-file-contents (vc-rcs-registered file)) | |
| 594 | (vc-rcs-parse))) | |
| 595 | (revisions (cdr (assq 'revisions tree))) | |
| 596 | ;; The revision N whose instructions we currently are processing. | |
| 597 | (cur (cdr (assq 'head (cdr (assq 'headers tree))))) | |
| 598 | ;; Alist from the parse tree for N. | |
| 599 | (meta (cdr (assoc cur revisions))) | |
| 600 | ;; Point and temporary string, respectively. | |
| 601 | p s | |
| 602 | ;; "Next-branch list". Nil means the desired revision to | |
| 603 | ;; display lives on the trunk. Non-nil means it lives on a | |
| 604 | ;; branch, in which case the value is a list of revision pairs | |
| 605 | ;; (PARENT . CHILD), the first PARENT being on the trunk, that | |
| 606 | ;; links each series of revisions in the path from the initial | |
| 607 | ;; revision to the desired revision to display. | |
| 608 | nbls | |
| 609 | ;; "Path-accumulate-predicate plus revision/date/author". | |
| 610 | ;; Until set, forward-chronological edits are not accumulated. | |
| 611 | ;; Once set, its value (updated every revision) is used for | |
| 612 | ;; the text property `:vc-rcs-r/d/a' for inserts during | |
| 613 | ;; processing of forward-chronological instructions for N. | |
| 614 | ;; See internal func `r/d/a'. | |
| 615 | prda | |
| 616 | ;; List of forward-chronological instructions, each of the | |
| 617 | ;; form: (POS . ACTION), where POS is a buffer position. If | |
| 618 | ;; ACTION is a string, it is inserted, otherwise it is taken as | |
| 619 | ;; the number of characters to be deleted. | |
| 620 | path | |
| 621 | ;; N+1. When `cur' is "", this is the initial revision. | |
| 622 | pre) | |
| 623 | (unless revision | |
| 624 | (setq revision cur)) | |
| 625 | (unless (assoc revision revisions) | |
| 626 | (error "No such revision: %s" revision)) | |
| 627 | ;; Find which branches (if any) must be included in the edits. | |
| 628 | (let ((par revision) | |
| 629 | bpt kids) | |
| 630 | (while (setq bpt (vc-branch-part par) | |
| 631 | par (vc-branch-part bpt)) | |
| 632 | (setq kids (cdr (assq 'branches (cdr (assoc par revisions))))) | |
| 633 | ;; A branchpoint may have multiple children. Find the right one. | |
| 634 | (while (not (string= bpt (vc-branch-part (car kids)))) | |
| 635 | (setq kids (cdr kids))) | |
| 636 | (push (cons par (car kids)) nbls))) | |
| 637 | ;; Start with the full text. | |
| 638 | (set-buffer buffer) | |
| 639 | (insert (cdr (assq 'text meta))) | |
| 640 | ;; Apply reverse-chronological edits on the trunk, computing and | |
| 641 | ;; accumulating forward-chronological edits after some point, for | |
| 642 | ;; later. | |
| 643 | (flet ((r/d/a () (vector pre | |
| 644 | (cdr (assq 'date meta)) | |
| 645 | (cdr (assq 'author meta))))) | |
| 646 | (while (when (setq pre cur cur (cdr (assq 'next meta))) | |
| 647 | (not (string= "" cur))) | |
| 648 | (setq | |
| 649 | ;; Start accumulating the forward-chronological edits when N+1 | |
| 650 | ;; on the trunk is either the desired revision to display, or | |
| 651 | ;; the appropriate branchpoint for it. Do this before | |
| 652 | ;; updating `meta' since `r/d/a' uses N+1's `meta' value. | |
| 653 | prda (when (or prda (string= (if nbls (caar nbls) revision) pre)) | |
| 654 | (r/d/a)) | |
| 655 | meta (cdr (assoc cur revisions))) | |
| 656 | ;; Edits in the parse tree specify a line number (in the buffer | |
| 657 | ;; *BEFORE* editing occurs) to start from, but line numbers | |
| 658 | ;; change as a result of edits. To DTRT, we apply edits in | |
| 659 | ;; order of descending buffer position so that edits further | |
| 660 | ;; down in the buffer occur first w/o corrupting specified | |
| 661 | ;; buffer positions of edits occurring towards the beginning of | |
| 662 | ;; the buffer. In this way we avoid using markers. A pleasant | |
| 663 | ;; property of this approach is ability to push instructions | |
| 664 | ;; onto `path' directly, w/o need to maintain rev boundaries. | |
| 665 | (dolist (insn (cdr (assq :insn meta))) | |
| 666 | (goto-line (pop insn)) | |
| 667 | (setq p (point)) | |
| 668 | (case (pop insn) | |
| 669 | (k (setq s (buffer-substring-no-properties | |
| 670 | p (progn (forward-line (car insn)) | |
| 671 | (point)))) | |
| 672 | (when prda | |
| 673 | (push `(,p . ,(propertize s :vc-rcs-r/d/a prda)) path)) | |
| 674 | (delete-region p (point))) | |
| 675 | (i (setq s (car insn)) | |
| 676 | (when prda | |
| 677 | (push `(,p . ,(length s)) path)) | |
| 678 | (insert s))))) | |
| 679 | ;; For the initial revision, setting `:vc-rcs-r/d/a' directly is | |
| 680 | ;; equivalent to pushing an insert instruction (of the entire buffer | |
| 681 | ;; contents) onto `path' then erasing the buffer, but less wasteful. | |
| 682 | (put-text-property (point-min) (point-max) :vc-rcs-r/d/a (r/d/a)) | |
| 683 | ;; Now apply the forward-chronological edits for the trunk. | |
| 684 | (dolist (insn path) | |
| 685 | (goto-char (pop insn)) | |
| 686 | (if (stringp insn) | |
| 687 | (insert insn) | |
| 688 | (delete-char insn))) | |
| 689 | ;; Now apply the forward-chronological edits (directly from the | |
| 690 | ;; parse-tree) for the branch(es), if necessary. We re-use vars | |
| 691 | ;; `pre' and `meta' for the sake of internal func `r/d/a'. | |
| 692 | (while nbls | |
| 693 | (setq pre (cdr (pop nbls))) | |
| 694 | (while (progn | |
| 695 | (setq meta (cdr (assoc pre revisions)) | |
| 696 | prda nil) | |
| 697 | (dolist (insn (cdr (assq :insn meta))) | |
| 698 | (goto-line (pop insn)) | |
| 699 | (case (pop insn) | |
| 700 | (k (delete-region | |
| 701 | (point) (progn (forward-line (car insn)) | |
| 702 | (point)))) | |
| 703 | (i (insert (propertize | |
| 704 | (car insn) | |
| 705 | :vc-rcs-r/d/a | |
| 706 | (or prda (setq prda (r/d/a)))))))) | |
| 707 | (prog1 (not (string= (if nbls (caar nbls) revision) pre)) | |
| 708 | (setq pre (cdr (assq 'next meta))))))))) | |
| 709 | ;; Lastly, for each line, insert at bol nicely-formatted history info. | |
| 710 | ;; We do two passes to collect summary information used to minimize | |
| 711 | ;; the annotation's usage of screen real-estate: (1) Consider rendered | |
| 712 | ;; width of revision plus author together as a unit; and (2) Omit | |
| 713 | ;; author entirely if all authors are the same as the user. | |
| 714 | (let ((ht (make-hash-table :test 'eq)) | |
| 715 | (me (user-login-name)) | |
| 716 | (maxw 0) | |
| 717 | (all-me t) | |
| 718 | rda w a) | |
| 719 | (goto-char (point-max)) | |
| 720 | (while (not (bobp)) | |
| 721 | (forward-line -1) | |
| 722 | (setq rda (get-text-property (point) :vc-rcs-r/d/a)) | |
| 723 | (unless (gethash rda ht) | |
| 724 | (setq a (aref rda 2) | |
| 725 | all-me (and all-me (string= a me))) | |
| 726 | (puthash rda (setq w (+ (length (aref rda 0)) | |
| 727 | (length a))) | |
| 728 | ht) | |
| 729 | (setq maxw (max w maxw)))) | |
| 730 | (let ((padding (make-string maxw 32))) | |
| 731 | (flet ((pad (w) (substring-no-properties padding w)) | |
| 732 | (render (rda &rest ls) | |
| 733 | (propertize | |
| 734 | (apply 'concat | |
| 735 | (format-time-string "%Y-%m-%d" (aref rda 1)) | |
| 736 | " " | |
| 737 | (aref rda 0) | |
| 738 | ls) | |
| df2e19c2 | 739 | :vc-annotate-prefix t |
| 3249f234 TTN |
740 | :vc-rcs-r/d/a rda))) |
| 741 | (maphash | |
| 742 | (if all-me | |
| 743 | (lambda (rda w) | |
| 744 | (puthash rda (render rda (pad w) ": ") ht)) | |
| 745 | (lambda (rda w) | |
| 746 | (puthash rda (render rda " " (pad w) " " (aref rda 2) ": ") ht))) | |
| 747 | ht))) | |
| 748 | (while (not (eobp)) | |
| 749 | (insert (gethash (get-text-property (point) :vc-rcs-r/d/a) ht)) | |
| 750 | (forward-line 1)))) | |
| 751 | ||
| 752 | (defun vc-rcs-annotate-current-time () | |
| 753 | "Return the current time, based at midnight of the current day, and | |
| 754 | encoded as fractional days." | |
| 755 | (vc-annotate-convert-time | |
| 756 | (apply 'encode-time 0 0 0 (nthcdr 3 (decode-time (current-time)))))) | |
| 757 | ||
| 758 | (defun vc-rcs-annotate-time () | |
| 759 | "Return the time of the next annotation (as fraction of days) | |
| 760 | systime, or nil if there is none. Also, reposition point." | |
| 761 | (unless (eobp) | |
| 53cc5b9c TTN |
762 | (prog1 (vc-annotate-convert-time |
| 763 | (aref (get-text-property (point) :vc-rcs-r/d/a) 1)) | |
| 764 | (goto-char (next-single-property-change (point) :vc-annotate-prefix))))) | |
| 3249f234 TTN |
765 | |
| 766 | (defun vc-rcs-annotate-extract-revision-at-line () | |
| 767 | (aref (get-text-property (point) :vc-rcs-r/d/a) 0)) | |
| 768 | ||
| 8f98485f AS |
769 | \f |
| 770 | ;;; | |
| 771 | ;;; Snapshot system | |
| 772 | ;;; | |
| 773 | ||
| 774 | (defun vc-rcs-assign-name (file name) | |
| 775 | "Assign to FILE's latest version a given NAME." | |
| 776 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-n" name ":"))) | |
| 777 | ||
| 778 | \f | |
| 779 | ;;; | |
| 780 | ;;; Miscellaneous | |
| 781 | ;;; | |
| 782 | ||
| 783 | (defun vc-rcs-check-headers () | |
| 784 | "Check if the current file has any headers in it." | |
| 785 | (save-excursion | |
| 786 | (goto-char (point-min)) | |
| 787 | (re-search-forward "\\$[A-Za-z\300-\326\330-\366\370-\377]+\ | |
| 788 | \\(: [\t -#%-\176\240-\377]*\\)?\\$" nil t))) | |
| 789 | ||
| 790 | (defun vc-rcs-clear-headers () | |
| 791 | "Implementation of vc-clear-headers for RCS." | |
| 792 | (let ((case-fold-search nil)) | |
| 793 | (goto-char (point-min)) | |
| 794 | (while (re-search-forward | |
| 795 | (concat "\\$\\(Author\\|Date\\|Header\\|Id\\|Locker\\|Name\\|" | |
| 796 | "RCSfile\\|Revision\\|Source\\|State\\): [^$\n]+\\$") | |
| 797 | nil t) | |
| 798 | (replace-match "$\\1$")))) | |
| 799 | ||
| 800 | (defun vc-rcs-rename-file (old new) | |
| 801 | ;; Just move the master file (using vc-rcs-master-templates). | |
| 802 | (vc-rename-master (vc-name old) new vc-rcs-master-templates)) | |
| 803 | ||
| 804 | \f | |
| 805 | ;;; | |
| 806 | ;;; Internal functions | |
| 807 | ;;; | |
| 808 | ||
| b038f9fb TTN |
809 | (defun vc-rcs-root (dir) |
| 810 | (vc-find-root dir "RCS" t)) | |
| 811 | ||
| 8f98485f AS |
812 | (defun vc-rcs-workfile-is-newer (file) |
| 813 | "Return non-nil if FILE is newer than its RCS master. | |
| 814 | This likely means that FILE has been changed with respect | |
| 815 | to its master version." | |
| 816 | (let ((file-time (nth 5 (file-attributes file))) | |
| 817 | (master-time (nth 5 (file-attributes (vc-name file))))) | |
| 818 | (or (> (nth 0 file-time) (nth 0 master-time)) | |
| 819 | (and (= (nth 0 file-time) (nth 0 master-time)) | |
| 820 | (> (nth 1 file-time) (nth 1 master-time)))))) | |
| 821 | ||
| 822 | (defun vc-rcs-find-most-recent-rev (branch) | |
| 823 | "Find most recent revision on BRANCH." | |
| 824 | (goto-char (point-min)) | |
| 825 | (let ((latest-rev -1) value) | |
| 826 | (while (re-search-forward (concat "^\\(" (regexp-quote branch) | |
| 827 | "\\.\\([0-9]+\\)\\)\ndate[ \t]+[0-9.]+;") | |
| 828 | nil t) | |
| 829 | (let ((rev (string-to-number (match-string 2)))) | |
| 830 | (when (< latest-rev rev) | |
| 831 | (setq latest-rev rev) | |
| 832 | (setq value (match-string 1))))) | |
| 833 | (or value | |
| 7735770b | 834 | (vc-branch-part branch)))) |
| 8f98485f | 835 | |
| ac3f4c6f | 836 | (defun vc-rcs-fetch-master-state (file &optional working-revision) |
| 8f98485f AS |
837 | "Compute the master file's idea of the state of FILE. |
| 838 | If a WORKFILE-VERSION is given, compute the state of that version, | |
| 839 | otherwise determine the workfile version based on the master file. | |
| ac3f4c6f | 840 | This function sets the properties `vc-working-revision' and |
| 8f98485f AS |
841 | `vc-checkout-model' to their correct values, based on the master |
| 842 | file." | |
| 843 | (with-temp-buffer | |
| ea28aa35 AS |
844 | (if (or (not (vc-insert-file (vc-name file) "^[0-9]")) |
| 845 | (progn (goto-char (point-min)) | |
| 846 | (not (looking-at "^head[ \t\n]+[^;]+;$")))) | |
| 847 | (error "File %s is not an RCS master file" (vc-name file))) | |
| 8f98485f AS |
848 | (let ((workfile-is-latest nil) |
| 849 | (default-branch (vc-parse-buffer "^branch[ \t\n]+\\([^;]*\\);" 1))) | |
| 850 | (vc-file-setprop file 'vc-rcs-default-branch default-branch) | |
| ac3f4c6f | 851 | (unless working-revision |
| 8f98485f AS |
852 | ;; Workfile version not known yet. Determine that first. It |
| 853 | ;; is either the head of the trunk, the head of the default | |
| 854 | ;; branch, or the "default branch" itself, if that is a full | |
| 855 | ;; revision number. | |
| 856 | (cond | |
| 857 | ;; no default branch | |
| 858 | ((or (not default-branch) (string= "" default-branch)) | |
| ac3f4c6f | 859 | (setq working-revision |
| 8f98485f AS |
860 | (vc-parse-buffer "^head[ \t\n]+\\([^;]+\\);" 1)) |
| 861 | (setq workfile-is-latest t)) | |
| 862 | ;; default branch is actually a revision | |
| 863 | ((string-match "^[0-9]+\\.[0-9]+\\(\\.[0-9]+\\.[0-9]+\\)*$" | |
| 864 | default-branch) | |
| ac3f4c6f | 865 | (setq working-revision default-branch)) |
| 8f98485f AS |
866 | ;; else, search for the head of the default branch |
| 867 | (t (vc-insert-file (vc-name file) "^desc") | |
| ac3f4c6f | 868 | (setq working-revision |
| 8f98485f AS |
869 | (vc-rcs-find-most-recent-rev default-branch)) |
| 870 | (setq workfile-is-latest t))) | |
| ac3f4c6f | 871 | (vc-file-setprop file 'vc-working-revision working-revision)) |
| 8f98485f AS |
872 | ;; Check strict locking |
| 873 | (goto-char (point-min)) | |
| 874 | (vc-file-setprop file 'vc-checkout-model | |
| 875 | (if (re-search-forward ";[ \t\n]*strict;" nil t) | |
| 876 | 'locking 'implicit)) | |
| 877 | ;; Compute state of workfile version | |
| 878 | (goto-char (point-min)) | |
| 879 | (let ((locking-user | |
| 880 | (vc-parse-buffer (concat "^locks[ \t\n]+[^;]*[ \t\n]+\\([^:]+\\):" | |
| ac3f4c6f | 881 | (regexp-quote working-revision) |
| 8f98485f AS |
882 | "[^0-9.]") |
| 883 | 1))) | |
| 884 | (cond | |
| 885 | ;; not locked | |
| 886 | ((not locking-user) | |
| 887 | (if (or workfile-is-latest | |
| ac3f4c6f | 888 | (vc-rcs-latest-on-branch-p file working-revision)) |
| 8f98485f | 889 | ;; workfile version is latest on branch |
| 036f45fa | 890 | 'up-to-date |
| 8f98485f | 891 | ;; workfile version is not latest on branch |
| 3702367b | 892 | 'needs-update)) |
| 8f98485f AS |
893 | ;; locked by the calling user |
| 894 | ((and (stringp locking-user) | |
| 4f147528 | 895 | (string= locking-user (vc-user-login-name file))) |
| 70e2f6c7 | 896 | (if (or (eq (vc-rcs-checkout-model (list file)) 'locking) |
| 8f98485f | 897 | workfile-is-latest |
| ac3f4c6f | 898 | (vc-rcs-latest-on-branch-p file working-revision)) |
| 8f98485f AS |
899 | 'edited |
| 900 | ;; Locking is not used for the file, but the owner does | |
| 901 | ;; have a lock, and there is a higher version on the current | |
| 902 | ;; branch. Not sure if this can occur, and if it is right | |
| 903 | ;; to use `needs-merge' in this case. | |
| 904 | 'needs-merge)) | |
| 905 | ;; locked by somebody else | |
| 906 | ((stringp locking-user) | |
| 907 | locking-user) | |
| 908 | (t | |
| 909 | (error "Error getting state of RCS file"))))))) | |
| 910 | ||
| 911 | (defun vc-rcs-consult-headers (file) | |
| 912 | "Search for RCS headers in FILE, and set properties accordingly. | |
| 913 | ||
| 914 | Returns: nil if no headers were found | |
| 915 | 'rev if a workfile revision was found | |
| 916 | 'rev-and-lock if revision and lock info was found" | |
| 917 | (cond | |
| 918 | ((not (get-file-buffer file)) nil) | |
| 919 | ((let (status version locking-user) | |
| 920 | (save-excursion | |
| 921 | (set-buffer (get-file-buffer file)) | |
| 922 | (goto-char (point-min)) | |
| 923 | (cond | |
| 924 | ;; search for $Id or $Header | |
| 925 | ;; ------------------------- | |
| 926 | ;; The `\ 's below avoid an RCS 5.7 bug when checking in this file. | |
| 927 | ((or (and (search-forward "$Id\ : " nil t) | |
| 928 | (looking-at "[^ ]+ \\([0-9.]+\\) ")) | |
| 929 | (and (progn (goto-char (point-min)) | |
| 930 | (search-forward "$Header\ : " nil t)) | |
| 931 | (looking-at "[^ ]+ \\([0-9.]+\\) "))) | |
| 932 | (goto-char (match-end 0)) | |
| 933 | ;; if found, store the revision number ... | |
| 934 | (setq version (match-string-no-properties 1)) | |
| 935 | ;; ... and check for the locking state | |
| 936 | (cond | |
| 937 | ((looking-at | |
| 938 | (concat "[0-9]+[/-][01][0-9][/-][0-3][0-9] " ; date | |
| 939 | "[0-2][0-9]:[0-5][0-9]+:[0-6][0-9]+\\([+-][0-9:]+\\)? " ; time | |
| 940 | "[^ ]+ [^ ]+ ")) ; author & state | |
| 941 | (goto-char (match-end 0)) ; [0-6] in regexp handles leap seconds | |
| 942 | (cond | |
| 943 | ;; unlocked revision | |
| 944 | ((looking-at "\\$") | |
| 945 | (setq locking-user 'none) | |
| 946 | (setq status 'rev-and-lock)) | |
| 947 | ;; revision is locked by some user | |
| 948 | ((looking-at "\\([^ ]+\\) \\$") | |
| 949 | (setq locking-user (match-string-no-properties 1)) | |
| 950 | (setq status 'rev-and-lock)) | |
| 951 | ;; everything else: false | |
| 952 | (nil))) | |
| 953 | ;; unexpected information in | |
| 954 | ;; keyword string --> quit | |
| 955 | (nil))) | |
| 956 | ;; search for $Revision | |
| 957 | ;; -------------------- | |
| 958 | ((re-search-forward (concat "\\$" | |
| 959 | "Revision: \\([0-9.]+\\) \\$") | |
| 960 | nil t) | |
| 961 | ;; if found, store the revision number ... | |
| 962 | (setq version (match-string-no-properties 1)) | |
| 963 | ;; and see if there's any lock information | |
| 964 | (goto-char (point-min)) | |
| 965 | (if (re-search-forward (concat "\\$" "Locker:") nil t) | |
| 966 | (cond ((looking-at " \\([^ ]+\\) \\$") | |
| 967 | (setq locking-user (match-string-no-properties 1)) | |
| 968 | (setq status 'rev-and-lock)) | |
| 969 | ((looking-at " *\\$") | |
| 970 | (setq locking-user 'none) | |
| 971 | (setq status 'rev-and-lock)) | |
| 972 | (t | |
| 973 | (setq locking-user 'none) | |
| 974 | (setq status 'rev-and-lock))) | |
| 975 | (setq status 'rev))) | |
| 976 | ;; else: nothing found | |
| 977 | ;; ------------------- | |
| 978 | (t nil))) | |
| ac3f4c6f | 979 | (if status (vc-file-setprop file 'vc-working-revision version)) |
| 8f98485f AS |
980 | (and (eq status 'rev-and-lock) |
| 981 | (vc-file-setprop file 'vc-state | |
| 982 | (cond | |
| 983 | ((eq locking-user 'none) 'up-to-date) | |
| 53cc5b9c | 984 | ((string= locking-user (vc-user-login-name file)) |
| 4f147528 | 985 | 'edited) |
| 8f98485f AS |
986 | (t locking-user))) |
| 987 | ;; If the file has headers, we don't want to query the | |
| 988 | ;; master file, because that would eliminate all the | |
| 989 | ;; performance gain the headers brought us. We therefore | |
| 990 | ;; use a heuristic now to find out whether locking is used | |
| 991 | ;; for this file. If we trust the file permissions, and the | |
| 992 | ;; file is not locked, then if the file is read-only we | |
| 993 | ;; assume that locking is used for the file, otherwise | |
| 994 | ;; locking is not used. | |
| 995 | (not (vc-mistrust-permissions file)) | |
| 996 | (vc-up-to-date-p file) | |
| 997 | (if (string-match ".r-..-..-." (nth 8 (file-attributes file))) | |
| 998 | (vc-file-setprop file 'vc-checkout-model 'locking) | |
| 999 | (vc-file-setprop file 'vc-checkout-model 'implicit))) | |
| 1000 | status)))) | |
| 1001 | ||
| 1002 | (defun vc-release-greater-or-equal (r1 r2) | |
| 1003 | "Compare release numbers, represented as strings. | |
| 1004 | Release components are assumed cardinal numbers, not decimal fractions | |
| 1005 | \(5.10 is a higher release than 5.9\). Omitted fields are considered | |
| 1006 | lower \(5.6.7 is earlier than 5.6.7.1\). Comparison runs till the end | |
| 1007 | of the string is found, or a non-numeric component shows up \(5.6.7 is | |
| 1008 | earlier than \"5.6.7 beta\", which is probably not what you want in | |
| 1009 | some cases\). This code is suitable for existing RCS release numbers. | |
| 1010 | CVS releases are handled reasonably, too \(1.3 < 1.4* < 1.5\)." | |
| 1011 | (let (v1 v2 i1 i2) | |
| 1012 | (catch 'done | |
| 1013 | (or (and (string-match "^\\.?\\([0-9]+\\)" r1) | |
| 1014 | (setq i1 (match-end 0)) | |
| 1015 | (setq v1 (string-to-number (match-string 1 r1))) | |
| 1016 | (or (and (string-match "^\\.?\\([0-9]+\\)" r2) | |
| 1017 | (setq i2 (match-end 0)) | |
| 1018 | (setq v2 (string-to-number (match-string 1 r2))) | |
| 1019 | (if (> v1 v2) (throw 'done t) | |
| 1020 | (if (< v1 v2) (throw 'done nil) | |
| 1021 | (throw 'done | |
| 1022 | (vc-release-greater-or-equal | |
| 1023 | (substring r1 i1) | |
| 1024 | (substring r2 i2))))))) | |
| 1025 | (throw 'done t))) | |
| 1026 | (or (and (string-match "^\\.?\\([0-9]+\\)" r2) | |
| 1027 | (throw 'done nil)) | |
| 1028 | (throw 'done t))))) | |
| 1029 | ||
| 1030 | (defun vc-rcs-release-p (release) | |
| 1031 | "Return t if we have RELEASE or better." | |
| 1032 | (let ((installation (vc-rcs-system-release))) | |
| 1033 | (if (and installation | |
| 1034 | (not (eq installation 'unknown))) | |
| 1035 | (vc-release-greater-or-equal installation release)))) | |
| 1036 | ||
| 8f98485f AS |
1037 | (defun vc-rcs-system-release () |
| 1038 | "Return the RCS release installed on this system, as a string. | |
| 1039 | Return symbol UNKNOWN if the release cannot be deducted. The user can | |
| 1040 | override this using variable `vc-rcs-release'. | |
| 1041 | ||
| 1042 | If the user has not set variable `vc-rcs-release' and it is nil, | |
| 1043 | variable `vc-rcs-release' is set to the returned value." | |
| 1044 | (or vc-rcs-release | |
| 1045 | (setq vc-rcs-release | |
| 1046 | (or (and (zerop (vc-do-command nil nil "rcs" nil "-V")) | |
| 1047 | (with-current-buffer (get-buffer "*vc*") | |
| 1048 | (vc-parse-buffer "^RCS version \\([0-9.]+ *.*\\)" 1))) | |
| 1049 | 'unknown)))) | |
| 1050 | ||
| 1051 | (defun vc-rcs-set-non-strict-locking (file) | |
| 1052 | (vc-do-command nil 0 "rcs" file "-U") | |
| 1053 | (vc-file-setprop file 'vc-checkout-model 'implicit) | |
| 1054 | (set-file-modes file (logior (file-modes file) 128))) | |
| 1055 | ||
| 1056 | (defun vc-rcs-set-default-branch (file branch) | |
| 1057 | (vc-do-command nil 0 "rcs" (vc-name file) (concat "-b" branch)) | |
| 1058 | (vc-file-setprop file 'vc-rcs-default-branch branch)) | |
| 1059 | ||
| 3249f234 TTN |
1060 | (defun vc-rcs-parse (&optional buffer) |
| 1061 | "Parse current buffer, presumed to be in RCS-style masterfile format. | |
| 1062 | Optional arg BUFFER specifies another buffer to parse. Return an alist | |
| 1063 | of two elements, w/ keys `headers' and `revisions' and values in turn | |
| 1064 | sub-alists. For `headers', the values unless otherwise specified are | |
| 1065 | strings and the keys are: | |
| 1066 | ||
| 1067 | desc -- description | |
| 1068 | head -- latest revision | |
| 1069 | branch -- the branch the \"head revision\" lies on; | |
| 1070 | absent if the head revision lies on the trunk | |
| 1071 | access -- ??? | |
| 1072 | symbols -- sub-alist of (SYMBOL . REVISION) elements | |
| 1073 | locks -- if file is checked out, something like \"ttn:1.7\" | |
| 1074 | strict -- t if \"strict locking\" is in effect, otherwise nil | |
| 1075 | comment -- may be absent; typically something like \"# \" or \"; \" | |
| 1076 | expand -- may be absent; ??? | |
| 1077 | ||
| 1078 | For `revisions', the car is REVISION (string), the cdr a sub-alist, | |
| 1079 | with string values (unless otherwise specified) and keys: | |
| 1080 | ||
| 1081 | date -- a time value (like that returned by `encode-time'); as a | |
| 1082 | special case, a year value less than 100 is augmented by 1900 | |
| 1083 | author -- username | |
| 1084 | state -- typically \"Exp\" or \"Rel\" | |
| 1085 | branches -- list of revisions that begin branches from this revision | |
| 1086 | next -- on the trunk: the chronologically-preceding revision, or \"\"; | |
| 1087 | on a branch: the chronologically-following revision, or \"\" | |
| 1088 | log -- change log entry | |
| 1089 | text -- for the head revision on the trunk, the body of the file; | |
| 1090 | other revisions have `:insn' instead | |
| 1091 | :insn -- for non-head revisions, a list of parsed instructions | |
| 1092 | in one of two forms, in both cases START meaning \"first | |
| 1093 | go to line START\": | |
| 1094 | - `(START k COUNT)' -- kill COUNT lines | |
| 1095 | - `(START i TEXT)' -- insert TEXT (a string) | |
| 1096 | The list is in descending order by START. | |
| 1097 | ||
| 1098 | The `:insn' key is a keyword to distinguish it as a vc-rcs.el extension." | |
| 1099 | (setq buffer (get-buffer (or buffer (current-buffer)))) | |
| 1100 | (set-buffer buffer) | |
| 1101 | ;; An RCS masterfile can be viewed as containing four regular (for the | |
| 1102 | ;; most part) sections: (a) the "headers", (b) the "rev headers", (c) | |
| 1103 | ;; the "description" and (d) the "rev bodies", in that order. In the | |
| 1104 | ;; returned alist (see docstring), elements from (b) and (d) are | |
| 1105 | ;; combined pairwise to form the "revisions", while those from (a) and | |
| 1106 | ;; (c) are simply combined to form the "headers". | |
| 1107 | ;; | |
| 1108 | ;; Loosely speaking, each section contains a series of alternating | |
| 1109 | ;; "tags" and "printed representations". In the (b) and (d), many | |
| 1110 | ;; such series can appear, and a revision number on a line by itself | |
| 1111 | ;; precedes the series of tags and printed representations associated | |
| 1112 | ;; with it. | |
| 1113 | ;; | |
| 1114 | ;; In (a) and (b), the printed representations (with the exception of | |
| 1115 | ;; the `comment' tag in the headers) terminate with a semicolon, which | |
| 1116 | ;; is NOT part of the "value" finally associated with the tag. All | |
| 1117 | ;; other printed representations are in "@@-format"; there is an "@", | |
| 1118 | ;; the middle part (to be translated into the value), another "@" and | |
| 1119 | ;; a newline. Each "@@" in the middle part indicates the position of | |
| 1120 | ;; a single "@" (and consequently the requirement of an additional | |
| 1121 | ;; initial step when translating to the value). | |
| 1122 | ;; | |
| 1123 | ;; Parser state includes vars that collect parts of the return value... | |
| 1124 | (let ((desc nil) (headers nil) (revs nil) | |
| 1125 | ;; ... as well as vars that support a single-pass, tag-assisted, | |
| 1126 | ;; minimal-data-copying scan. Basically -- skirting around the | |
| 1127 | ;; grouping by revision required in (b) and (d) -- we repeatedly | |
| 1128 | ;; and context-sensitively read a tag (that MUST be present), | |
| 1129 | ;; determine the bounds of the printed representation, translate | |
| 1130 | ;; it into a value, and push the tag plus value onto one of the | |
| 1131 | ;; collection vars. Finally, we return the parse tree | |
| 1132 | ;; incorporating the values of the collection vars (see "rv"). | |
| 1133 | ;; | |
| 1134 | ;; A symbol or string to keep track of context (for error messages). | |
| 1135 | context | |
| 1136 | ;; A symbol, the current tag. | |
| 1137 | tok | |
| 1138 | ;; Region (begin and end buffer positions) of the printed | |
| 1139 | ;; representation for the current tag. | |
| 1140 | b e | |
| 1141 | ;; A list of buffer positions where "@@" can be found within the | |
| 1142 | ;; printed representation region. For each location, we push two | |
| 1143 | ;; elements onto the list, 1+ and 2+ the location, respectively, | |
| 1144 | ;; with the 2+ appearing at the head. In this way, the expression | |
| 1145 | ;; `(,e ,@@-holes ,b) | |
| 1146 | ;; describes regions that can be concatenated (in reverse order) | |
| 1147 | ;; to "de-@@-format" the printed representation as the first step | |
| 1148 | ;; to translating it into some value. See internal func `gather'. | |
| 1149 | @-holes) | |
| 1150 | (flet ((sw () (skip-chars-forward " \t\n")) ; i.e., `[:space:]' | |
| 1151 | (at (tag) (save-excursion (eq tag (read buffer)))) | |
| 1152 | (to-eol () (buffer-substring-no-properties | |
| 1153 | (point) (progn (forward-line 1) | |
| 1154 | (1- (point))))) | |
| 1155 | (to-semi () (setq b (point) | |
| 1156 | e (progn (search-forward ";") | |
| 1157 | (1- (point))))) | |
| 1158 | (to-one@ () (setq @-holes nil | |
| 1159 | b (progn (search-forward "@") (point)) | |
| 1160 | e (progn (while (and (search-forward "@") | |
| 1161 | (= ?@ (char-after)) | |
| 1162 | (progn | |
| 1163 | (push (point) @-holes) | |
| 1164 | (forward-char 1) | |
| 1165 | (push (point) @-holes)))) | |
| 1166 | (1- (point))))) | |
| 1167 | (tok+val (set-b+e name &optional proc) | |
| 1168 | (unless (eq name (setq tok (read buffer))) | |
| 1169 | (error "Missing `%s' while parsing %s" name context)) | |
| 1170 | (sw) | |
| 1171 | (funcall set-b+e) | |
| 1172 | (cons tok (if proc | |
| 1173 | (funcall proc) | |
| 1174 | (buffer-substring-no-properties b e)))) | |
| 1175 | (k-semi (name &optional proc) (tok+val 'to-semi name proc)) | |
| 1176 | (gather () (let ((pairs `(,e ,@@-holes ,b)) | |
| 1177 | acc) | |
| 1178 | (while pairs | |
| 1179 | (push (buffer-substring-no-properties | |
| 1180 | (cadr pairs) (car pairs)) | |
| 1181 | acc) | |
| 1182 | (setq pairs (cddr pairs))) | |
| 1183 | (apply 'concat acc))) | |
| 1184 | (k-one@ (name &optional later) (tok+val 'to-one@ name | |
| 1185 | (if later | |
| 1186 | (lambda () t) | |
| 1187 | 'gather)))) | |
| 1188 | (save-excursion | |
| 1189 | (goto-char (point-min)) | |
| 1190 | ;; headers | |
| 1191 | (setq context 'headers) | |
| 1192 | (flet ((hpush (name &optional proc) | |
| 1193 | (push (k-semi name proc) headers))) | |
| 1194 | (hpush 'head) | |
| 1195 | (when (at 'branch) | |
| 1196 | (hpush 'branch)) | |
| 1197 | (hpush 'access) | |
| 1198 | (hpush 'symbols | |
| 1199 | (lambda () | |
| 1200 | (mapcar (lambda (together) | |
| 1201 | (let ((two (split-string together ":"))) | |
| 1202 | (setcar two (intern (car two))) | |
| 1203 | (setcdr two (cadr two)) | |
| 1204 | two)) | |
| 1205 | (split-string | |
| 1206 | (buffer-substring-no-properties b e))))) | |
| 1207 | (hpush 'locks)) | |
| 1208 | (push `(strict . ,(when (at 'strict) | |
| 1209 | (search-forward ";") | |
| 1210 | t)) | |
| 1211 | headers) | |
| 1212 | (when (at 'comment) | |
| 1213 | (push (k-one@ 'comment) headers) | |
| 1214 | (search-forward ";")) | |
| 1215 | (when (at 'expand) | |
| 1216 | (push (k-one@ 'expand) headers) | |
| 1217 | (search-forward ";")) | |
| 1218 | (setq headers (nreverse headers)) | |
| 1219 | ;; rev headers | |
| 1220 | (sw) (setq context 'rev-headers) | |
| 1221 | (while (looking-at "[0-9]") | |
| 1222 | (push `(,(to-eol) | |
| 1223 | ,(k-semi 'date | |
| 1224 | (lambda () | |
| 1225 | (let ((ls (mapcar 'string-to-number | |
| 1226 | (split-string | |
| 1227 | (buffer-substring-no-properties | |
| 1228 | b e) | |
| 1229 | "\\.")))) | |
| 1230 | ;; Hack the year -- verified to be the | |
| 1231 | ;; same algorithm used in RCS 5.7. | |
| 1232 | (when (< (car ls) 100) | |
| 1233 | (setcar ls (+ 1900 (car ls)))) | |
| 1234 | (apply 'encode-time (nreverse ls))))) | |
| 1235 | ,@(mapcar 'k-semi '(author state)) | |
| 1236 | ,(k-semi 'branches | |
| 1237 | (lambda () | |
| 1238 | (split-string | |
| 1239 | (buffer-substring-no-properties b e)))) | |
| 1240 | ,(k-semi 'next)) | |
| 1241 | revs) | |
| 1242 | (sw)) | |
| 1243 | (setq revs (nreverse revs)) | |
| 1244 | ;; desc | |
| 1245 | (sw) (setq context 'desc | |
| 1246 | desc (k-one@ 'desc)) | |
| 1247 | ;; rev bodies | |
| 1248 | (let (acc | |
| 1249 | ;; Element of `revs' that initially holds only header info. | |
| 1250 | ;; "Pairwise combination" occurs when we add body info. | |
| 1251 | rev | |
| 1252 | ;; Components of the editing commands (aside from the actual | |
| 1253 | ;; text) that comprise the `text' printed representations | |
| 1254 | ;; (not including the "head" revision). | |
| 1255 | cmd start act | |
| 1256 | ;; Ascending (reversed) `@-holes' which the internal func | |
| 1257 | ;; `incg' pops to effect incremental gathering. | |
| 1258 | asc | |
| 1259 | ;; Function to extract text (for the `a' command), either | |
| 1260 | ;; `incg' or `buffer-substring-no-properties'. (This is | |
| 1261 | ;; for speed; strictly speaking, it is sufficient to use | |
| 1262 | ;; only the former since it behaves identically to the | |
| 1263 | ;; latter in the absense of "@@".) | |
| 1264 | sub) | |
| 1265 | (flet ((incg (beg end) (let ((b beg) (e end) @-holes) | |
| 1266 | (while (and asc (< (car asc) e)) | |
| 1267 | (push (pop asc) @-holes)) | |
| 1268 | ;; Self-deprecate when work is done. | |
| 1269 | ;; Folding many dimensions into one. | |
| 1270 | ;; Thanks B.Mandelbrot, for complex sum. | |
| 1271 | ;; O beauteous math! --the Unvexed Bum | |
| 1272 | (unless asc | |
| 1273 | (setq sub 'buffer-substring-no-properties)) | |
| 1274 | (gather)))) | |
| 1275 | (while (and (sw) | |
| 1276 | (not (eobp)) | |
| 1277 | (setq context (to-eol) | |
| 1278 | rev (or (assoc context revs) | |
| 1279 | (error "Rev `%s' has body but no head" | |
| 1280 | context)))) | |
| 1281 | (push (k-one@ 'log) (cdr rev)) | |
| 1282 | ;; For rev body `text' tags, delay translation slightly... | |
| 1283 | (push (k-one@ 'text t) (cdr rev)) | |
| 1284 | ;; ... until we decide which tag and value is appropriate to | |
| 1285 | ;; collect. For the "head" revision, compute the value of the | |
| 1286 | ;; `text' printed representation by simple `gather'. For all | |
| 1287 | ;; other revisions, replace the `text' tag+value with `:insn' | |
| 1288 | ;; plus value, always scanning in-place. | |
| 1289 | (if (string= context (cdr (assq 'head headers))) | |
| 1290 | (setcdr (cadr rev) (gather)) | |
| 1291 | (if @-holes | |
| 1292 | (setq asc (nreverse @-holes) | |
| 1293 | sub 'incg) | |
| 1294 | (setq sub 'buffer-substring-no-properties)) | |
| 1295 | (goto-char b) | |
| 1296 | (setq acc nil) | |
| 1297 | (while (< (point) e) | |
| 1298 | (forward-char 1) | |
| 1299 | (setq cmd (char-before) | |
| 1300 | start (read (current-buffer)) | |
| 1301 | act (read (current-buffer))) | |
| 1302 | (forward-char 1) | |
| 1303 | (push (case cmd | |
| 1304 | (?d | |
| 1305 | ;; `d' means "delete lines". | |
| 1306 | ;; For Emacs spirit, we use `k' for "kill". | |
| 1307 | `(,start k ,act)) | |
| 1308 | (?a | |
| 1309 | ;; `a' means "append after this line" but | |
| 1310 | ;; internally we normalize it so that START | |
| 1311 | ;; specifies the actual line for insert, thus | |
| 1312 | ;; requiring less hair in the realization algs. | |
| 1313 | ;; For Emacs spirit, we use `i' for "insert". | |
| 1314 | `(,(1+ start) i | |
| 1315 | ,(funcall sub (point) (progn (forward-line act) | |
| 1316 | (point))))) | |
| 1317 | (t (error "Bad command `%c' in `text' for rev `%s'" | |
| 1318 | cmd context))) | |
| 1319 | acc)) | |
| 1320 | (goto-char (1+ e)) | |
| 1321 | (setcar (cdr rev) (cons :insn acc))))))) | |
| 1322 | ;; rv | |
| 1323 | `((headers ,desc ,@headers) | |
| 1324 | (revisions ,@revs))))) | |
| 1325 | ||
| d8aff077 GM |
1326 | (provide 'vc-rcs) |
| 1327 | ||
| fa63cb6d | 1328 | ;; arch-tag: 759b4916-5b0d-431d-b647-b185b8c652cf |
| d8aff077 | 1329 | ;;; vc-rcs.el ends here |