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0f6c7af8 SM |
1 | ;;; vc-arch.el --- VC backend for the Arch version-control system |
2 | ||
d7a0267c | 3 | ;; Copyright (C) 2004, 2005, 2006, 2007 Free Software Foundation, Inc. |
0f6c7af8 SM |
4 | |
5 | ;; Author: FSF (see vc.el for full credits) | |
6 | ;; Maintainer: Stefan Monnier <monnier@gnu.org> | |
7 | ||
8 | ;; This file is part of GNU Emacs. | |
9 | ||
10 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
11 | ;; it under the terms of the GNU General Public License as published by | |
12 | ;; the Free Software Foundation; either version 2, or (at your option) | |
13 | ;; any later version. | |
14 | ||
15 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
16 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | ;; GNU General Public License for more details. | |
19 | ||
20 | ;; You should have received a copy of the GNU General Public License | |
21 | ;; along with GNU Emacs; see the file COPYING. If not, write to the | |
086add15 LK |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, |
23 | ;; Boston, MA 02110-1301, USA. | |
0f6c7af8 SM |
24 | |
25 | ;;; Commentary: | |
26 | ||
27 | ;; The home page of the Arch version control system is at | |
df617e7f | 28 | ;; |
0f6c7af8 | 29 | ;; http://www.gnuarch.org/ |
df617e7f | 30 | ;; |
0f6c7af8 SM |
31 | ;; This is derived from vc-mcvs.el as follows: |
32 | ;; - cp vc-mcvs.el vc-arch.el and then M-% mcvs RET arch RET | |
33 | ;; | |
34 | ;; Then of course started the hacking. | |
35 | ;; | |
36 | ;; What has been partly tested: | |
df617e7f SM |
37 | ;; - Open a file. |
38 | ;; - C-x v = without any prefix arg. | |
39 | ;; - C-x v v to commit a change to a single file. | |
0f6c7af8 SM |
40 | |
41 | ;; Bugs: | |
42 | ||
27fde599 | 43 | ;; - *VC-log*'s initial content lacks the `Summary:' lines. |
0f6c7af8 SM |
44 | ;; - All files under the tree are considered as "under Arch's control" |
45 | ;; without regards to =tagging-method and such. | |
46 | ;; - Files are always considered as `edited'. | |
27fde599 | 47 | ;; - C-x v l does not work. |
0f6c7af8 | 48 | ;; - C-x v i does not work. |
27fde599 SM |
49 | ;; - C-x v ~ does not work. |
50 | ;; - C-x v u does not work. | |
51 | ;; - C-x v s does not work. | |
52 | ;; - C-x v r does not work. | |
0f6c7af8 SM |
53 | ;; - VC-dired does not work. |
54 | ;; - And more... | |
55 | ||
56 | ;;; Code: | |
57 | ||
e5d31f9f | 58 | (eval-when-compile (require 'vc) (require 'cl)) |
0f6c7af8 SM |
59 | |
60 | ;;; | |
61 | ;;; Customization options | |
62 | ;;; | |
63 | ||
64 | (defvar vc-arch-command | |
b4c4ba41 | 65 | (let ((candidates '("tla" "baz"))) |
0f6c7af8 SM |
66 | (while (and candidates (not (executable-find (car candidates)))) |
67 | (setq candidates (cdr candidates))) | |
68 | (or (car candidates) "tla"))) | |
69 | ||
70 | ;; Clear up the cache to force vc-call to check again and discover | |
71 | ;; new functions when we reload this file. | |
72 | (put 'Arch 'vc-functions nil) | |
73 | ||
74 | ;;;###autoload (defun vc-arch-registered (file) | |
ef9c4df0 SM |
75 | ;;;###autoload (if (vc-find-root file "{arch}/=tagging-method") |
76 | ;;;###autoload (progn | |
77 | ;;;###autoload (load "vc-arch") | |
78 | ;;;###autoload (vc-arch-registered file)))) | |
0f6c7af8 | 79 | |
df617e7f | 80 | (defun vc-arch-add-tagline () |
0f6c7af8 SM |
81 | "Add an `arch-tag' to the end of the current file." |
82 | (interactive) | |
df617e7f | 83 | (comment-normalize-vars) |
0f6c7af8 SM |
84 | (goto-char (point-max)) |
85 | (forward-comment -1) | |
56dada42 SM |
86 | (skip-chars-forward " \t\n") |
87 | (cond | |
88 | ((not (bolp)) (insert "\n\n")) | |
89 | ((not (eq ?\n (char-before (1- (point))))) (insert "\n"))) | |
df617e7f SM |
90 | (let ((beg (point)) |
91 | (idfile (and buffer-file-name | |
92 | (expand-file-name | |
93 | (concat ".arch-ids/" | |
94 | (file-name-nondirectory buffer-file-name) | |
95 | ".id") | |
96 | (file-name-directory buffer-file-name))))) | |
0f6c7af8 | 97 | (insert "arch-tag: ") |
df617e7f SM |
98 | (if (and idfile (file-exists-p idfile)) |
99 | ;; If the file is unreadable, we do want to get an error here. | |
100 | (progn | |
101 | (insert-file-contents idfile) | |
102 | (forward-line 1) | |
103 | (delete-file idfile)) | |
104 | (condition-case nil | |
105 | (call-process "uuidgen" nil t) | |
106 | (file-error (insert (format "%s <%s> %s" | |
107 | (current-time-string) | |
108 | user-mail-address | |
109 | (+ (nth 2 (current-time)) | |
110 | (buffer-size))))))) | |
0f6c7af8 SM |
111 | (comment-region beg (point)))) |
112 | ||
df617e7f SM |
113 | (defconst vc-arch-tagline-re "^\\W*arch-tag:[ \t]*\\(.*[^ \t\n]\\)") |
114 | ||
74cb3d21 SM |
115 | (defmacro vc-with-current-file-buffer (file &rest body) |
116 | (declare (indent 2) (debug t)) | |
117 | `(let ((-kill-buf- nil) | |
118 | (-file- ,file)) | |
119 | (with-current-buffer (or (find-buffer-visiting -file-) | |
120 | (setq -kill-buf- (generate-new-buffer " temp"))) | |
121 | ;; Avoid find-file-literally since it can do many undesirable extra | |
122 | ;; things (among which, call us back into an infinite loop). | |
123 | (if -kill-buf- (insert-file-contents -file-)) | |
124 | (unwind-protect | |
125 | (progn ,@body) | |
126 | (if (buffer-live-p -kill-buf-) (kill-buffer -kill-buf-)))))) | |
127 | ||
df617e7f SM |
128 | (defun vc-arch-file-source-p (file) |
129 | "Can return nil, `maybe' or a non-nil value. | |
130 | Only the value `maybe' can be trusted :-(." | |
131 | ;; FIXME: Check the tag and name of parent dirs. | |
132 | (unless (string-match "\\`[,+]" (file-name-nondirectory file)) | |
133 | (or (string-match "\\`{arch}/" | |
134 | (file-relative-name file (vc-arch-root file))) | |
135 | (file-exists-p | |
136 | ;; Check the presence of an ID file. | |
137 | (expand-file-name | |
138 | (concat ".arch-ids/" (file-name-nondirectory file) ".id") | |
139 | (file-name-directory file))) | |
140 | ;; Check the presence of a tagline. | |
74cb3d21 | 141 | (vc-with-current-file-buffer file |
df617e7f SM |
142 | (save-excursion |
143 | (goto-char (point-max)) | |
144 | (or (re-search-backward vc-arch-tagline-re (- (point) 1000) t) | |
145 | (progn | |
146 | (goto-char (point-min)) | |
147 | (re-search-forward vc-arch-tagline-re (+ (point) 1000) t))))) | |
148 | ;; FIXME: check =tagging-method to see whether untagged files might | |
149 | ;; be source or not. | |
150 | (with-current-buffer | |
151 | (find-file-noselect (expand-file-name "{arch}/=tagging-method" | |
152 | (vc-arch-root file))) | |
153 | (let ((untagged-source t)) ;Default is `names'. | |
154 | (save-excursion | |
155 | (goto-char (point-min)) | |
156 | (if (re-search-forward "^[ \t]*\\(\\(tagline\\|implicit\\|names\\)\\|explicit\\)" nil t) | |
157 | (setq untagged-source (match-end 2))) | |
158 | (if (re-search-forward "^[ \t]*untagged-source[ \t]+\\(\\(source\\)\\|precious\\|backup\\|junk\\|unrecognized\\)" nil t) | |
159 | (setq untagged-source (match-end 2)))) | |
160 | (if untagged-source 'maybe)))))) | |
161 | ||
162 | (defun vc-arch-file-id (file) | |
163 | ;; Don't include the kind of ID this is because it seems to be too messy. | |
164 | (let ((idfile (expand-file-name | |
165 | (concat ".arch-ids/" (file-name-nondirectory file) ".id") | |
166 | (file-name-directory file)))) | |
167 | (if (file-exists-p idfile) | |
168 | (with-temp-buffer | |
169 | (insert-file-contents idfile) | |
170 | (looking-at ".*[^ \n\t]") | |
e56b4640 | 171 | (match-string 0)) |
df617e7f SM |
172 | (with-current-buffer (find-file-noselect file) |
173 | (save-excursion | |
174 | (goto-char (point-max)) | |
175 | (if (or (re-search-backward vc-arch-tagline-re (- (point) 1000) t) | |
176 | (progn | |
177 | (goto-char (point-min)) | |
178 | (re-search-forward vc-arch-tagline-re (+ (point) 1000) t))) | |
179 | (match-string 1) | |
e56b4640 | 180 | (concat "./" (file-relative-name file (vc-arch-root file))))))))) |
df617e7f SM |
181 | |
182 | (defun vc-arch-tagging-method (file) | |
183 | (with-current-buffer | |
184 | (find-file-noselect | |
185 | (expand-file-name "{arch}/=tagging-method" (vc-arch-root file))) | |
186 | (save-excursion | |
187 | (goto-char (point-min)) | |
188 | (if (re-search-forward | |
189 | "^[ \t]*\\(tagline\\|implicit\\|names\\|explicit\\)" nil t) | |
190 | (intern (match-string 1)) | |
191 | 'names)))) | |
192 | ||
0f6c7af8 SM |
193 | (defun vc-arch-root (file) |
194 | "Return the root directory of a Arch project, if any." | |
195 | (or (vc-file-getprop file 'arch-root) | |
ef5c2eca | 196 | (vc-file-setprop |
ef9c4df0 SM |
197 | ;; Check the =tagging-method, in case someone naively manually |
198 | ;; creates a {arch} directory somewhere. | |
199 | file 'arch-root (vc-find-root file "{arch}/=tagging-method")))) | |
0f6c7af8 | 200 | |
8cdd17b4 | 201 | (defun vc-arch-register (files &optional rev comment) |
7bbdf1cb | 202 | (if rev (error "Explicit initial revision not supported for Arch")) |
8cdd17b4 ER |
203 | (dolist (file files) |
204 | (let ((tagmet (vc-arch-tagging-method file))) | |
205 | (if (and (memq tagmet '(tagline implicit)) comment-start) | |
206 | (with-current-buffer (find-file-noselect file) | |
207 | (if (buffer-modified-p) | |
208 | (error "Save %s first" (buffer-name))) | |
209 | (vc-arch-add-tagline) | |
210 | (save-buffer))))) | |
211 | (vc-arch-command nil 0 files "add")) | |
df617e7f | 212 | |
0f6c7af8 | 213 | (defun vc-arch-registered (file) |
df617e7f SM |
214 | ;; Don't seriously check whether it's source or not. Checking would |
215 | ;; require running TLA, so it's better to not do it, so it also works if | |
216 | ;; TLA is not installed. | |
217 | (and (vc-arch-root file) | |
218 | (vc-arch-file-source-p file))) | |
0f6c7af8 SM |
219 | |
220 | (defun vc-arch-default-version (file) | |
221 | (or (vc-file-getprop (vc-arch-root file) 'arch-default-version) | |
222 | (let* ((root (vc-arch-root file)) | |
223 | (f (expand-file-name "{arch}/++default-version" root))) | |
224 | (if (file-readable-p f) | |
225 | (vc-file-setprop | |
226 | root 'arch-default-version | |
227 | (with-temp-buffer | |
228 | (insert-file-contents f) | |
229 | ;; Strip the terminating newline. | |
230 | (buffer-substring (point-min) (1- (point-max))))))))) | |
231 | ||
68eb03ca SM |
232 | (defun vc-arch-workfile-unchanged-p (file) |
233 | "Check if FILE is unchanged by diffing against the master version. | |
234 | Return non-nil if FILE is unchanged." | |
235 | nil) | |
236 | ||
0f6c7af8 SM |
237 | (defun vc-arch-state (file) |
238 | ;; There's no checkout operation and merging is not done from VC | |
239 | ;; so the only operation that's state dependent that VC supports is commit | |
240 | ;; which is only activated if the file is `edited'. | |
df617e7f SM |
241 | (let* ((root (vc-arch-root file)) |
242 | (ver (vc-arch-default-version file)) | |
243 | (pat (concat "\\`" (subst-char-in-string ?/ ?% ver))) | |
244 | (dir (expand-file-name ",,inode-sigs/" | |
245 | (expand-file-name "{arch}" root))) | |
246 | (sigfile nil)) | |
247 | (dolist (f (if (file-directory-p dir) (directory-files dir t pat))) | |
248 | (if (or (not sigfile) (file-newer-than-file-p f sigfile)) | |
249 | (setq sigfile f))) | |
250 | (if (not sigfile) | |
251 | 'edited ;We know nothing. | |
252 | (let ((id (vc-arch-file-id file))) | |
253 | (setq id (replace-regexp-in-string "[ \t]" "_" id)) | |
254 | (with-current-buffer (find-file-noselect sigfile) | |
255 | (goto-char (point-min)) | |
256 | (while (and (search-forward id nil 'move) | |
c9cb3a26 SM |
257 | (save-excursion |
258 | (goto-char (- (match-beginning 0) 2)) | |
259 | ;; For `names', the lines start with `?./foo/bar'. | |
260 | ;; For others there's 2 chars before the ./foo/bar. | |
261 | (or (not (or (bolp) (looking-at "\n?"))) | |
262 | ;; Ignore E_ entries used for foo.id files. | |
263 | (looking-at "E_"))))) | |
df617e7f SM |
264 | (if (eobp) |
265 | ;; ID not found. | |
266 | (if (equal (file-name-nondirectory sigfile) | |
267 | (subst-char-in-string | |
268 | ?/ ?% (vc-arch-workfile-version file))) | |
269 | 'added | |
270 | ;; Might be `added' or `up-to-date' as well. | |
271 | ;; FIXME: Check in the patch logs to find out. | |
272 | 'edited) | |
273 | ;; Found the ID, let's check the inode. | |
274 | (if (not (re-search-forward | |
275 | "\t.*mtime=\\([0-9]+\\):size=\\([0-9]+\\)" | |
276 | (line-end-position) t)) | |
277 | ;; Buh? Unexpected format. | |
278 | 'edited | |
279 | (let ((ats (file-attributes file))) | |
f9e66e49 | 280 | (if (and (eq (nth 7 ats) (string-to-number (match-string 2))) |
df617e7f SM |
281 | (equal (format-time-string "%s" (nth 5 ats)) |
282 | (match-string 1))) | |
283 | 'up-to-date | |
284 | 'edited))))))))) | |
7bbdf1cb | 285 | |
0f6c7af8 SM |
286 | (defun vc-arch-workfile-version (file) |
287 | (let* ((root (expand-file-name "{arch}" (vc-arch-root file))) | |
288 | (defbranch (vc-arch-default-version file))) | |
c771f3d6 | 289 | (when (and defbranch (string-match "\\`\\(.+@[^/\n]+\\)/\\(\\(\\(.*?\\)\\(?:--.*\\)?\\)--.*\\)\\'" defbranch)) |
0f6c7af8 SM |
290 | (let* ((archive (match-string 1 defbranch)) |
291 | (category (match-string 4 defbranch)) | |
292 | (branch (match-string 3 defbranch)) | |
293 | (version (match-string 2 defbranch)) | |
27fde599 | 294 | (sealed nil) (rev-nb 0) |
0f6c7af8 SM |
295 | (rev nil) |
296 | logdir tmp) | |
297 | (setq logdir (expand-file-name category root)) | |
298 | (setq logdir (expand-file-name branch logdir)) | |
299 | (setq logdir (expand-file-name version logdir)) | |
300 | (setq logdir (expand-file-name archive logdir)) | |
301 | (setq logdir (expand-file-name "patch-log" logdir)) | |
bcabe045 SM |
302 | (dolist (file (if (file-directory-p logdir) (directory-files logdir))) |
303 | ;; Revision names go: base-0, patch-N, version-0, versionfix-M. | |
27fde599 SM |
304 | (when (and (eq (aref file 0) ?v) (not sealed)) |
305 | (setq sealed t rev-nb 0)) | |
0f6c7af8 SM |
306 | (if (and (string-match "-\\([0-9]+\\)\\'" file) |
307 | (setq tmp (string-to-number (match-string 1 file))) | |
27fde599 | 308 | (or (not sealed) (eq (aref file 0) ?v)) |
0f6c7af8 SM |
309 | (>= tmp rev-nb)) |
310 | (setq rev-nb tmp rev file))) | |
86d660c6 SM |
311 | ;; Use "none-000" if the tree hasn't yet been committed on the |
312 | ;; default branch. We'll then get "Arch:000[branch]" on the mode-line. | |
313 | (concat defbranch "--" (or rev "none-000")))))) | |
0f6c7af8 SM |
314 | |
315 | ||
316 | (defcustom vc-arch-mode-line-rewrite | |
27fde599 | 317 | '(("\\`.*--\\(.*--.*\\)--\\(v?\\).*-\\([0-9]+\\)\\'" . "\\2\\3[\\1]")) |
0f6c7af8 | 318 | "Rewrite rules to shorten Arch's revision names on the mode-line." |
d30bef64 KS |
319 | :type '(repeat (cons regexp string)) |
320 | :group 'vc) | |
0f6c7af8 SM |
321 | |
322 | (defun vc-arch-mode-line-string (file) | |
323 | "Return string for placement in modeline by `vc-mode-line' for FILE." | |
324 | (let ((rev (vc-workfile-version file))) | |
325 | (dolist (rule vc-arch-mode-line-rewrite) | |
326 | (if (string-match (car rule) rev) | |
327 | (setq rev (replace-match (cdr rule) t nil rev)))) | |
328 | (format "Arch%c%s" | |
df617e7f SM |
329 | (case (vc-state file) |
330 | ((up-to-date needs-patch) ?-) | |
331 | (added ?@) | |
332 | (t ?:)) | |
0f6c7af8 SM |
333 | rev))) |
334 | ||
335 | (defun vc-arch-diff3-rej-p (rej) | |
df617e7f SM |
336 | (let ((attrs (file-attributes rej))) |
337 | (and attrs (< (nth 7 attrs) 60) | |
338 | (with-temp-buffer | |
339 | (insert-file-contents rej) | |
340 | (goto-char (point-min)) | |
341 | (looking-at "Conflicts occured, diff3 conflict markers left in file\\."))))) | |
0f6c7af8 SM |
342 | |
343 | (defun vc-arch-delete-rej-if-obsolete () | |
7bbdf1cb SM |
344 | "For use in `after-save-hook'." |
345 | (save-excursion | |
346 | (let ((rej (concat buffer-file-name ".rej"))) | |
347 | (when (and buffer-file-name (vc-arch-diff3-rej-p rej)) | |
348 | (if (not (re-search-forward "^<<<<<<< " nil t)) | |
349 | ;; The .rej file is obsolete. | |
350 | (condition-case nil (delete-file rej) (error nil))))))) | |
0f6c7af8 SM |
351 | |
352 | (defun vc-arch-find-file-hook () | |
353 | (let ((rej (concat buffer-file-name ".rej"))) | |
354 | (when (and buffer-file-name (file-exists-p rej)) | |
355 | (if (vc-arch-diff3-rej-p rej) | |
356 | (save-excursion | |
357 | (goto-char (point-min)) | |
7bbdf1cb | 358 | (if (not (re-search-forward "^<<<<<<< " nil t)) |
0f6c7af8 SM |
359 | ;; The .rej file is obsolete. |
360 | (condition-case nil (delete-file rej) (error nil)) | |
361 | (smerge-mode 1) | |
7bbdf1cb | 362 | (add-hook 'after-save-hook |
0f6c7af8 SM |
363 | 'vc-arch-delete-rej-if-obsolete nil t) |
364 | (message "There are unresolved conflicts in this file"))) | |
365 | (message "There are unresolved conflicts in %s" | |
366 | (file-name-nondirectory rej)))))) | |
367 | ||
df617e7f SM |
368 | (defun vc-arch-find-file-not-found-hook () |
369 | ;; Do nothing. We are not sure whether the file is `source' or not, | |
370 | ;; so we shouldn't ask the user whether she wants to check it out. | |
371 | ) | |
372 | ||
0f6c7af8 SM |
373 | (defun vc-arch-checkout-model (file) 'implicit) |
374 | ||
8cdd17b4 | 375 | (defun vc-arch-checkin (files rev comment) |
ef5c2eca | 376 | (if rev (error "Committing to a specific revision is unsupported")) |
8cdd17b4 ER |
377 | ;; FIXME: This implementation probably only works for singleton filesets |
378 | (let ((summary (file-relative-name (car file) (vc-arch-root (car files))))) | |
27fde599 SM |
379 | ;; Extract a summary from the comment. |
380 | (when (or (string-match "\\`Summary:[ \t]*\\(.*[^ \t\n]\\)\\([ \t]*\n\\)*" comment) | |
381 | (string-match "\\`[ \t]*\\(.*[^ \t\n]\\)[ \t]*\\(\n?\\'\\|\n\\([ \t]*\n\\)+\\)" comment)) | |
382 | (setq summary (match-string 1 comment)) | |
383 | (setq comment (substring comment (match-end 0)))) | |
8cdd17b4 | 384 | (vc-arch-command nil 0 files "commit" "-s" summary "-L" comment "--" |
27fde599 | 385 | (vc-switches 'Arch 'checkin)))) |
0f6c7af8 | 386 | |
8cdd17b4 ER |
387 | (defun vc-arch-diff (files &optional oldvers newvers buffer) |
388 | "Get a difference report using Arch between two versions of FILES." | |
389 | ;; FIXME: This implementation probably only works for singleton filesets | |
df617e7f SM |
390 | (if (and newvers |
391 | (vc-up-to-date-p file) | |
8cdd17b4 | 392 | (equal newvers (vc-workfile-version (car files)))) |
df617e7f SM |
393 | ;; Newvers is the base revision and the current file is unchanged, |
394 | ;; so we can diff with the current file. | |
395 | (setq newvers nil)) | |
0f6c7af8 | 396 | (if newvers |
ef5c2eca | 397 | (error "Diffing specific revisions not implemented") |
160a1544 | 398 | (let* ((async (and (not vc-disable-async-diff) (fboundp 'start-process))) |
0f6c7af8 | 399 | ;; Run the command from the root dir. |
8cdd17b4 | 400 | (default-directory (vc-arch-root (car files))) |
0f6c7af8 SM |
401 | (status |
402 | (vc-arch-command | |
bf37bf11 | 403 | (or buffer "*vc-diff*") |
0f6c7af8 SM |
404 | (if async 'async 1) |
405 | nil "file-diffs" | |
406 | ;; Arch does not support the typical flags. | |
407 | ;; (vc-switches 'Arch 'diff) | |
8cdd17b4 ER |
408 | (mapcar 'file-relative-name files) |
409 | (if (equal oldvers (vc-workfile-version (car files))) | |
0f6c7af8 SM |
410 | nil |
411 | oldvers)))) | |
412 | (if async 1 status)))) ; async diff, pessimistic assumption. | |
413 | ||
414 | (defun vc-arch-delete-file (file) | |
415 | (vc-arch-command nil 0 file "rm")) | |
416 | ||
417 | (defun vc-arch-rename-file (old new) | |
418 | (vc-arch-command nil 0 new "mv" (file-relative-name old))) | |
419 | ||
7bbdf1cb SM |
420 | (defalias 'vc-arch-responsible-p 'vc-arch-root) |
421 | ||
0f6c7af8 SM |
422 | (defun vc-arch-command (buffer okstatus file &rest flags) |
423 | "A wrapper around `vc-do-command' for use in vc-arch.el." | |
424 | (apply 'vc-do-command buffer okstatus vc-arch-command file flags)) | |
425 | ||
7bbdf1cb SM |
426 | (defun vc-arch-init-version () nil) |
427 | ||
56dada42 SM |
428 | ;;; Completion of versions and revisions. |
429 | ||
56dada42 SM |
430 | (defun vc-arch--version-completion-table (root string) |
431 | (delq nil | |
432 | (mapcar | |
433 | (lambda (d) | |
434 | (when (string-match "/\\([^/]+\\)/\\([^/]+\\)\\'" d) | |
435 | (concat (match-string 2 d) "/" (match-string 1 d)))) | |
436 | (let ((default-directory root)) | |
437 | (file-expand-wildcards | |
438 | (concat "*/*/" | |
439 | (if (string-match "/" string) | |
440 | (concat (substring string (match-end 0)) | |
441 | "*/" (substring string 0 (match-beginning 0))) | |
442 | (concat "*/" string)) | |
443 | "*")))))) | |
444 | ||
445 | (defun vc-arch-revision-completion-table (file) | |
446 | (lexical-let ((file file)) | |
447 | (lambda (string pred action) | |
448 | ;; FIXME: complete revision patches as well. | |
ebaba1bd SM |
449 | (let* ((root (expand-file-name "{arch}" (vc-arch-root file))) |
450 | (table (vc-arch--version-completion-table root string))) | |
451 | (complete-with-action action table string pred))))) | |
56dada42 SM |
452 | |
453 | ;;; Trimming revision libraries. | |
454 | ||
455 | ;; This code is not directly related to VC and there are many variants of | |
456 | ;; this functionality available as scripts, but I like this version better, | |
457 | ;; so maybe others will like it too. | |
458 | ||
459 | (defun vc-arch-trim-find-least-useful-rev (revs) | |
460 | (let* ((first (pop revs)) | |
461 | (second (pop revs)) | |
462 | (third (pop revs)) | |
463 | ;; We try to give more importance to recent revisions. The idea is | |
464 | ;; that it's OK if checking out a revision 1000-patch-old is ten | |
465 | ;; times slower than checking out a revision 100-patch-old. But at | |
466 | ;; the same time a 2-patch-old rev isn't really ten times more | |
467 | ;; important than a 20-patch-old, so we use an arbitrary constant | |
468 | ;; "100" to reduce this effect for recent revisions. Making this | |
469 | ;; constant a float has the side effect of causing the subsequent | |
470 | ;; computations to be done as floats as well. | |
471 | (max (+ 100.0 (car (or (car (last revs)) third)))) | |
472 | (cost (lambda () (/ (- (car third) (car first)) (- max (car second))))) | |
473 | (minrev second) | |
474 | (mincost (funcall cost))) | |
475 | (while revs | |
476 | (setq first second) | |
477 | (setq second third) | |
478 | (setq third (pop revs)) | |
479 | (when (< (funcall cost) mincost) | |
480 | (setq minrev second) | |
481 | (setq mincost (funcall cost)))) | |
482 | minrev)) | |
483 | ||
484 | (defun vc-arch-trim-make-sentinel (revs) | |
485 | (if (null revs) (lambda (proc msg) (message "VC-Arch trimming ... done")) | |
486 | `(lambda (proc msg) | |
487 | (message "VC-Arch trimming %s..." ',(file-name-nondirectory (car revs))) | |
488 | (rename-file ,(car revs) ,(concat (car revs) "*rm*")) | |
489 | (setq proc (start-process "vc-arch-trim" nil | |
490 | "rm" "-rf" ',(concat (car revs) "*rm*"))) | |
491 | (set-process-sentinel proc (vc-arch-trim-make-sentinel ',(cdr revs)))))) | |
492 | ||
493 | (defun vc-arch-trim-one-revlib (dir) | |
494 | "Delete half of the revisions in the revision library." | |
495 | (interactive "Ddirectory: ") | |
496 | (let ((revs | |
497 | (sort (delq nil | |
498 | (mapcar | |
499 | (lambda (f) | |
500 | (when (string-match "-\\([0-9]+\\)\\'" f) | |
501 | (cons (string-to-number (match-string 1 f)) f))) | |
502 | (directory-files dir nil nil 'nosort))) | |
503 | 'car-less-than-car)) | |
504 | (subdirs nil)) | |
505 | (when (cddr revs) | |
506 | (dotimes (i (/ (length revs) 2)) | |
507 | (let ((minrev (vc-arch-trim-find-least-useful-rev revs))) | |
508 | (setq revs (delq minrev revs)) | |
509 | (push minrev subdirs))) | |
510 | (funcall (vc-arch-trim-make-sentinel | |
511 | (mapcar (lambda (x) (expand-file-name (cdr x) dir)) subdirs)) | |
512 | nil nil)))) | |
513 | ||
514 | (defun vc-arch-trim-revlib () | |
515 | "Delete half of the revisions in the revision library." | |
516 | (interactive) | |
517 | (let ((rl-dir (with-output-to-string | |
518 | (call-process vc-arch-command nil standard-output nil | |
519 | "my-revision-library")))) | |
520 | (while (string-match "\\(.*\\)\n" rl-dir) | |
521 | (let ((dir (match-string 1 rl-dir))) | |
522 | (setq rl-dir | |
523 | (if (and (file-directory-p dir) (file-writable-p dir)) | |
524 | dir | |
525 | (substring rl-dir (match-end 0)))))) | |
526 | (unless (file-writable-p rl-dir) | |
527 | (error "No writable revlib directory found")) | |
528 | (message "Revlib at %s" rl-dir) | |
529 | (let* ((archives (directory-files rl-dir 'full "[^.]\\|...")) | |
530 | (categories | |
531 | (apply 'append | |
532 | (mapcar (lambda (dir) | |
533 | (when (file-directory-p dir) | |
534 | (directory-files dir 'full "[^.]\\|..."))) | |
535 | archives))) | |
536 | (branches | |
537 | (apply 'append | |
538 | (mapcar (lambda (dir) | |
539 | (when (file-directory-p dir) | |
540 | (directory-files dir 'full "[^.]\\|..."))) | |
541 | categories))) | |
542 | (versions | |
543 | (apply 'append | |
544 | (mapcar (lambda (dir) | |
545 | (when (file-directory-p dir) | |
546 | (directory-files dir 'full "--.*--"))) | |
547 | branches)))) | |
548 | (mapc 'vc-arch-trim-one-revlib versions)) | |
549 | )) | |
550 | ||
544bdc40 SM |
551 | ;;; Less obvious implementations. |
552 | ||
553 | (defun vc-arch-find-version (file rev buffer) | |
554 | (let ((out (make-temp-file "vc-out"))) | |
555 | (unwind-protect | |
556 | (progn | |
557 | (with-temp-buffer | |
558 | (vc-arch-command (current-buffer) 1 nil "file-diffs" file rev) | |
559 | (call-process-region (point-min) (point-max) | |
560 | "patch" nil nil nil "-R" "-o" out file)) | |
561 | (with-current-buffer buffer | |
562 | (insert-file-contents out))) | |
563 | (delete-file out)))) | |
564 | ||
0f6c7af8 SM |
565 | (provide 'vc-arch) |
566 | ||
86d660c6 | 567 | ;; arch-tag: a35c7c1c-5237-429d-88ef-3d718fd2e704 |
0f6c7af8 | 568 | ;;; vc-arch.el ends here |