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fff4a046 DN |
1 | ;;; vc-git.el --- VC backend for the git version control system |
2 | ||
3 | ;; Copyright (C) 2006, 2007 Free Software Foundation, Inc. | |
4 | ||
8b38ce20 | 5 | ;; Author: Alexandre Julliard <julliard@winehq.org> |
fff4a046 DN |
6 | ;; Keywords: tools |
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 | |
22 | ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, | |
23 | ;; Boston, MA 02110-1301, USA. | |
24 | ||
25 | ;;; Commentary: | |
26 | ||
27 | ;; This file contains a VC backend for the git version control | |
28 | ;; system. | |
29 | ;; | |
30 | ||
31 | ;;; Installation: | |
32 | ||
33 | ;; To install: put this file on the load-path and add GIT to the list | |
34 | ;; of supported backends in `vc-handled-backends'; the following line, | |
35 | ;; placed in your ~/.emacs, will accomplish this: | |
36 | ;; | |
37 | ;; (add-to-list 'vc-handled-backends 'GIT) | |
38 | ||
39 | ;;; Todo: | |
53cc90ab DN |
40 | ;; - check if more functions could use vc-git-command instead |
41 | ;; of start-process. | |
fff4a046 | 42 | ;; - changelog generation |
53cc90ab DN |
43 | |
44 | ;; Implement the rest of the vc interface. See the comment at the | |
45 | ;; beginning of vc.el. The current status is: | |
7546c767 | 46 | ;; ("??" means: "figure out what to do about it") |
fff4a046 | 47 | ;; |
53cc90ab DN |
48 | ;; FUNCTION NAME STATUS |
49 | ;; BACKEND PROPERTIES | |
50 | ;; * revision-granularity OK | |
51 | ;; STATE-QUERYING FUNCTIONS | |
52 | ;; * registered (file) OK | |
53 | ;; * state (file) OK | |
108607bc | 54 | ;; - state-heuristic (file) NOT NEEDED |
53cc90ab DN |
55 | ;; - dir-state (dir) OK |
56 | ;; * workfile-version (file) OK | |
108607bc | 57 | ;; - latest-on-branch-p (file) NOT NEEDED |
53cc90ab | 58 | ;; * checkout-model (file) OK |
7546c767 | 59 | ;; - workfile-unchanged-p (file) OK |
53cc90ab DN |
60 | ;; - mode-line-string (file) NOT NEEDED |
61 | ;; - dired-state-info (file) OK | |
62 | ;; STATE-CHANGING FUNCTIONS | |
63 | ;; * create-repo () OK | |
9143abff | 64 | ;; * register (files &optional rev comment) OK |
108607bc | 65 | ;; - init-version (file) NOT NEEDED |
53cc90ab | 66 | ;; - responsible-p (file) OK |
108607bc DN |
67 | ;; - could-register (file) NOT NEEDED, DEFAULT IS GOOD |
68 | ;; - receive-file (file rev) NOT NEEDED | |
d7009f45 | 69 | ;; - unregister (file) OK |
9143abff | 70 | ;; * checkin (files rev comment) OK |
b0f90937 | 71 | ;; * find-version (file rev buffer) OK |
53cc90ab DN |
72 | ;; * checkout (file &optional editable rev) OK |
73 | ;; * revert (file &optional contents-done) OK | |
108607bc DN |
74 | ;; - rollback (files) COULD BE SUPPORTED |
75 | ;; - merge (file rev1 rev2) It would be possible to merge changes into | |
76 | ;; a single file, but when committing they | |
77 | ;; wouldn't be identified as a merge by git, | |
b747d346 DN |
78 | ;; so it's probably not a good idea. |
79 | ;; - merge-news (file) see `merge' | |
53cc90ab DN |
80 | ;; - steal-lock (file &optional version) NOT NEEDED |
81 | ;; HISTORY FUNCTIONS | |
9143abff | 82 | ;; * print-log (files &optional buffer) OK |
53cc90ab DN |
83 | ;; - log-view-mode () OK |
84 | ;; - show-log-entry (version) NOT NEEDED, DEFAULT IS GOOD | |
108607bc DN |
85 | ;; - wash-log (file) COULD BE SUPPORTED |
86 | ;; - logentry-check () NOT NEEDED | |
53cc90ab | 87 | ;; - comment-history (file) ?? |
108607bc | 88 | ;; - update-changelog (files) COULD BE SUPPORTED |
b747d346 | 89 | ;; * diff (file &optional rev1 rev2 buffer) OK |
53cc90ab | 90 | ;; - revision-completion-table (file) NEEDED? |
b0f90937 | 91 | ;; - diff-tree (dir &optional rev1 rev2) OK |
53cc90ab DN |
92 | ;; - annotate-command (file buf &optional rev) OK |
93 | ;; - annotate-time () OK | |
108607bc | 94 | ;; - annotate-current-time () NOT NEEDED |
53cc90ab DN |
95 | ;; - annotate-extract-revision-at-line () OK |
96 | ;; SNAPSHOT SYSTEM | |
b747d346 | 97 | ;; - create-snapshot (dir name branchp) OK |
53cc90ab | 98 | ;; - assign-name (file name) NOT NEEDED |
40ed3f4f | 99 | ;; - retrieve-snapshot (dir name update) OK, needs to update buffers |
53cc90ab | 100 | ;; MISCELLANEOUS |
108607bc DN |
101 | ;; - make-version-backups-p (file) NOT NEEDED |
102 | ;; - repository-hostname (dirname) NOT NEEDED | |
7546c767 DN |
103 | ;; - previous-version (file rev) OK |
104 | ;; - next-version (file rev) OK | |
108607bc DN |
105 | ;; - check-headers () COULD BE SUPPORTED |
106 | ;; - clear-headers () NOT NEEDED | |
8b38ce20 DN |
107 | ;; - delete-file (file) OK |
108 | ;; - rename-file (old new) OK | |
108607bc DN |
109 | ;; - find-file-hook () NOT NEEDED |
110 | ;; - find-file-not-found-hook () NOT NEEDED | |
fff4a046 | 111 | |
b0f90937 | 112 | (eval-when-compile (require 'cl) (require 'vc)) |
fff4a046 DN |
113 | |
114 | (defvar git-commits-coding-system 'utf-8 | |
115 | "Default coding system for git commits.") | |
116 | ||
53cc90ab DN |
117 | ;; XXX when this backend is considered sufficiently reliable this |
118 | ;; should be moved to vc-hooks.el | |
119 | (add-to-list 'vc-handled-backends 'GIT) | |
faa98100 | 120 | (eval-after-load "vc" |
7546c767 | 121 | '(add-to-list 'vc-directory-exclusion-list ".git" t)) |
53cc90ab DN |
122 | |
123 | ;;; BACKEND PROPERTIES | |
124 | ||
125 | (defun vc-git-revision-granularity () | |
126 | 'repository) | |
127 | ||
128 | ;;; STATE-QUERYING FUNCTIONS | |
129 | ||
130 | ;;;###autoload (defun vc-git-registered (file) | |
131 | ;;;###autoload "Return non-nil if FILE is registered with git." | |
132 | ;;;###autoload (if (vc-find-root file ".git") ; short cut | |
133 | ;;;###autoload (progn | |
134 | ;;;###autoload (load "vc-git") | |
135 | ;;;###autoload (vc-git-registered file)))) | |
136 | ||
fff4a046 DN |
137 | (defun vc-git-registered (file) |
138 | "Check whether FILE is registered with git." | |
53cc90ab DN |
139 | (when (vc-git-root file) |
140 | (with-temp-buffer | |
141 | (let* ((dir (file-name-directory file)) | |
142 | (name (file-relative-name file dir))) | |
143 | (and (ignore-errors | |
144 | (when dir (cd dir)) | |
145 | (eq 0 (call-process "git" nil '(t nil) nil "ls-files" "-c" "-z" "--" name))) | |
146 | (let ((str (buffer-string))) | |
147 | (and (> (length str) (length name)) | |
148 | (string= (substring str 0 (1+ (length name))) (concat name "\0"))))))))) | |
108607bc | 149 | |
fff4a046 | 150 | (defun vc-git-state (file) |
53cc90ab | 151 | "Git-specific version of `vc-state'." |
fff4a046 DN |
152 | (let ((diff (vc-git--run-command-string file "diff-index" "-z" "HEAD" "--"))) |
153 | (if (and diff (string-match ":[0-7]\\{6\\} [0-7]\\{6\\} [0-9a-f]\\{40\\} [0-9a-f]\\{40\\} [ADMU]\0[^\0]+\0" diff)) | |
154 | 'edited | |
155 | 'up-to-date))) | |
156 | ||
53cc90ab DN |
157 | (defun vc-git-dir-state (dir) |
158 | (with-temp-buffer | |
159 | (vc-git-command (current-buffer) nil nil "ls-files" "-t") | |
160 | (goto-char (point-min)) | |
161 | (let ((status-char nil) | |
162 | (file nil)) | |
163 | (while (not (eobp)) | |
164 | (setq status-char (char-after)) | |
165 | (setq file | |
166 | (expand-file-name | |
167 | (buffer-substring-no-properties (+ (point) 2) (line-end-position)))) | |
168 | (cond | |
169 | ;; The rest of the possible states in "git ls-files -t" output: | |
170 | ;; R removed/deleted | |
171 | ;; K to be killed | |
172 | ;; should not show up in vc-dired, so don't deal with them | |
173 | ;; here. | |
174 | ((eq status-char ?H) | |
175 | (vc-file-setprop file 'vc-state 'up-to-date)) | |
176 | ((eq status-char ?M) | |
177 | (vc-file-setprop file 'vc-state 'edited)) | |
178 | ((eq status-char ?C) | |
179 | (vc-file-setprop file 'vc-state 'edited)) | |
180 | ((eq status-char ??) | |
181 | (vc-file-setprop file 'vc-backend 'none) | |
182 | (vc-file-setprop file 'vc-state 'nil))) | |
183 | (forward-line))))) | |
184 | ||
fff4a046 | 185 | (defun vc-git-workfile-version (file) |
53cc90ab | 186 | "Git-specific version of `vc-workfile-version'." |
fff4a046 DN |
187 | (let ((str (with-output-to-string |
188 | (with-current-buffer standard-output | |
189 | (call-process "git" nil '(t nil) nil "symbolic-ref" "HEAD"))))) | |
190 | (if (string-match "^\\(refs/heads/\\)?\\(.+\\)$" str) | |
191 | (match-string 2 str) | |
192 | str))) | |
193 | ||
194 | (defun vc-git-checkout-model (file) | |
195 | 'implicit) | |
196 | ||
197 | (defun vc-git-workfile-unchanged-p (file) | |
4d3ac01e DN |
198 | ;; The reason this does not use the result of vc-git-state is that |
199 | ;; git-diff-index (used by vc-git-state) doesn't refresh the cached | |
200 | ;; stat info, so if the file has been modified it will always show | |
201 | ;; up as modified in vc-git-state, even if the change has been | |
202 | ;; undone, until git-update-index --refresh is run. | |
108607bc | 203 | |
4d3ac01e DN |
204 | ;; OTOH the vc-git-workfile-unchanged-p implementation checks the |
205 | ;; actual content, so it will detect the case of a file reverted | |
206 | ;; back to its original state. | |
207 | ||
208 | ;; The ideal implementation would be to refresh the stat cache and | |
209 | ;; then call vc-git-state, but at the moment there's no git command | |
210 | ;; to refresh a single file, so this will have to be added first. | |
fff4a046 DN |
211 | (let ((sha1 (vc-git--run-command-string file "hash-object" "--")) |
212 | (head (vc-git--run-command-string file "ls-tree" "-z" "HEAD" "--"))) | |
213 | (and head | |
214 | (string-match "[0-7]\\{6\\} blob \\([0-9a-f]\\{40\\}\\)\t[^\0]+\0" head) | |
215 | (string= (car (split-string sha1 "\n")) (match-string 1 head))))) | |
216 | ||
53cc90ab DN |
217 | (defun vc-git-dired-state-info (file) |
218 | "Git-specific version of `vc-dired-state-info'." | |
219 | (let ((git-state (vc-state file))) | |
220 | (if (eq git-state 'edited) | |
221 | "(modified)" | |
222 | ;; fall back to the default VC representation | |
223 | (vc-default-dired-state-info 'GIT file)))) | |
224 | ||
225 | ;;; STATE-CHANGING FUNCTIONS | |
226 | ||
227 | (defun vc-git-create-repo () | |
228 | "Create a new GIT repository." | |
229 | (vc-git-command "init" nil 0 nil)) | |
230 | ||
8b9783e0 | 231 | (defun vc-git-register (files &optional rev comment) |
fff4a046 | 232 | "Register FILE into the git version-control system." |
8b9783e0 | 233 | (vc-git-command nil 0 files "update-index" "--add" "--")) |
fff4a046 | 234 | |
53cc90ab DN |
235 | (defalias 'vc-git-responsible-p 'vc-git-root) |
236 | ||
d7009f45 DN |
237 | (defun vc-git-unregister (file) |
238 | (vc-git-command nil 0 file "rm" "-f" "--cached" "--")) | |
108607bc | 239 | |
d7009f45 | 240 | |
8b9783e0 | 241 | (defun vc-git-checkin (files rev comment) |
fff4a046 | 242 | (let ((coding-system-for-write git-commits-coding-system)) |
8b9783e0 | 243 | (vc-git-command nil 0 files "commit" "-m" comment "--only" "--"))) |
fff4a046 | 244 | |
b0f90937 DN |
245 | (defun vc-git-find-version (file rev buffer) |
246 | (let ((coding-system-for-read 'binary) | |
8b38ce20 DN |
247 | (coding-system-for-write 'binary) |
248 | (fullname (substring | |
108607bc | 249 | (vc-git--run-command-string |
8b38ce20 DN |
250 | file "ls-files" "-z" "--full-name" "--") |
251 | 0 -1))) | |
108607bc DN |
252 | (vc-git-command |
253 | buffer 0 | |
8b38ce20 | 254 | (concat (if rev rev "HEAD") ":" fullname) "cat-file" "blob"))) |
b0f90937 DN |
255 | |
256 | (defun vc-git-checkout (file &optional editable rev) | |
7546c767 | 257 | (vc-git-command nil 0 file "checkout" (or rev "HEAD"))) |
fff4a046 DN |
258 | |
259 | (defun vc-git-revert (file &optional contents-done) | |
260 | "Revert FILE to the version stored in the git repository." | |
261 | (if contents-done | |
b0f90937 DN |
262 | (vc-git-command nil 0 file "update-index" "--") |
263 | (vc-git-command nil 0 file "checkout" "HEAD"))) | |
fff4a046 | 264 | |
53cc90ab DN |
265 | ;;; HISTORY FUNCTIONS |
266 | ||
8b9783e0 DN |
267 | (defun vc-git-print-log (files &optional buffer) |
268 | "Get change log associated with FILES." | |
64e3efd9 | 269 | (let ((coding-system-for-read git-commits-coding-system)) |
53cc90ab DN |
270 | ;; `vc-do-command' creates the buffer, but we need it before running |
271 | ;; the command. | |
272 | (vc-setup-buffer buffer) | |
273 | ;; If the buffer exists from a previous invocation it might be | |
274 | ;; read-only. | |
275 | (let ((inhibit-read-only t)) | |
64e3efd9 DN |
276 | ;; XXX `log-view-mode' needs to have something to identify where |
277 | ;; the log for each individual file starts. It seems that by | |
278 | ;; default git does not output this info. So loop here and call | |
279 | ;; "git rev-list" on each file separately to make sure that each | |
280 | ;; file gets a "File:" header before the corresponding | |
281 | ;; log. Maybe there is a way to do this with one command... | |
282 | (dolist (file files) | |
283 | (with-current-buffer | |
284 | buffer | |
285 | (insert "File: " (file-name-nondirectory file) "\n")) | |
108607bc | 286 | (vc-git-command buffer 'async (file-relative-name file) |
64e3efd9 | 287 | "rev-list" "--pretty" "HEAD" "--"))))) |
53cc90ab DN |
288 | |
289 | (defvar log-view-message-re) | |
290 | (defvar log-view-file-re) | |
291 | (defvar log-view-font-lock-keywords) | |
292 | ||
293 | (define-derived-mode vc-git-log-view-mode log-view-mode "GIT-Log-View" | |
294 | (require 'add-log) ;; we need the faces add-log | |
295 | ;; Don't have file markers, so use impossible regexp. | |
296 | (set (make-local-variable 'log-view-file-re) "^File:[ \t]+\\(.+\\)") | |
297 | (set (make-local-variable 'log-view-message-re) | |
298 | "^commit *\\([0-9a-z]+\\)") | |
299 | (set (make-local-variable 'log-view-font-lock-keywords) | |
300 | (append | |
301 | `((,log-view-message-re (1 'change-log-acknowledgement)) | |
302 | (,log-view-file-re (1 'change-log-file-face))) | |
303 | ;; Handle the case: | |
304 | ;; user: foo@bar | |
305 | '(("^Author:[ \t]+\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)" | |
306 | (1 'change-log-email)) | |
307 | ;; Handle the case: | |
308 | ;; user: FirstName LastName <foo@bar> | |
309 | ("^Author:[ \t]+\\([^<(]+?\\)[ \t]*[(<]\\([A-Za-z0-9_.+-]+@[A-Za-z0-9_.-]+\\)[>)]" | |
310 | (1 'change-log-name) | |
311 | (2 'change-log-email)) | |
312 | ("^Date: \\(.+\\)" (1 'change-log-date)) | |
313 | ("^summary:[ \t]+\\(.+\\)" (1 'log-view-message)))))) | |
fff4a046 | 314 | |
b747d346 DN |
315 | (defun vc-git-diff (files &optional rev1 rev2 buffer) |
316 | (let ((buf (or buffer "*vc-diff*"))) | |
fff4a046 | 317 | (if (and rev1 rev2) |
b747d346 DN |
318 | (vc-git-command buf 1 files "diff-tree" "--exit-code" "-p" rev1 rev2 "--") |
319 | (vc-git-command buf 1 files "diff-index" "--exit-code" "-p" (or rev1 "HEAD") "--")))) | |
fff4a046 | 320 | |
108607bc DN |
321 | (defun vc-git-revision-table (file) |
322 | (let ((table (list "HEAD"))) | |
323 | (with-temp-buffer | |
324 | (vc-git-command t nil nil "for-each-ref" "--format=%(refname)") | |
325 | (goto-char (point-min)) | |
326 | (while (re-search-forward "^refs/\\(heads\\|tags\\)/\\(.*\\)$" nil t) | |
327 | (push (match-string 2) table))) | |
328 | table)) | |
329 | ||
330 | (defun vc-git-revision-completion-table (file) | |
331 | (lexical-let ((file file) | |
332 | table) | |
333 | (setq table (lazy-completion-table | |
334 | table (lambda () (vc-git-revision-table file)))) | |
335 | table)) | |
336 | ||
b0f90937 DN |
337 | (defun vc-git-diff-tree (dir &optional rev1 rev2) |
338 | (vc-git-diff dir rev1 rev2)) | |
339 | ||
fff4a046 | 340 | (defun vc-git-annotate-command (file buf &optional rev) |
53cc90ab | 341 | ;; FIXME: rev is ignored |
fff4a046 | 342 | (let ((name (file-relative-name file))) |
53cc90ab | 343 | (vc-git-command buf 0 name "blame" (if rev (concat "-r" rev))))) |
fff4a046 DN |
344 | |
345 | (defun vc-git-annotate-time () | |
346 | (and (re-search-forward "[0-9a-f]+ (.* \\([0-9]+\\)-\\([0-9]+\\)-\\([0-9]+\\) \\([0-9]+\\):\\([0-9]+\\):\\([0-9]+\\) \\([-+0-9]+\\) +[0-9]+)" nil t) | |
347 | (vc-annotate-convert-time | |
348 | (apply #'encode-time (mapcar (lambda (match) (string-to-number (match-string match))) '(6 5 4 3 2 1 7)))))) | |
349 | ||
53cc90ab DN |
350 | (defun vc-git-annotate-extract-revision-at-line () |
351 | (save-excursion | |
352 | (move-beginning-of-line 1) | |
353 | (and (looking-at "[0-9a-f]+") | |
354 | (buffer-substring-no-properties (match-beginning 0) (match-end 0))))) | |
355 | ||
b747d346 DN |
356 | ;;; SNAPSHOT SYSTEM |
357 | ||
358 | (defun vc-git-create-snapshot (dir name branchp) | |
359 | (let ((default-directory dir)) | |
360 | (and (vc-git-command nil 0 nil "update-index" "--refresh") | |
361 | (if branchp | |
362 | (vc-git-command nil 0 nil "checkout" "-b" name) | |
363 | (vc-git-command nil 0 nil "tag" name))))) | |
364 | ||
365 | (defun vc-git-retrieve-snapshot (dir name update) | |
366 | (let ((default-directory dir)) | |
367 | (vc-git-command nil 0 nil "checkout" name) | |
368 | ;; FIXME: update buffers if `update' is true | |
369 | )) | |
370 | ||
371 | ||
53cc90ab | 372 | ;;; MISCELLANEOUS |
fff4a046 DN |
373 | |
374 | (defun vc-git-previous-version (file rev) | |
53cc90ab | 375 | "Git-specific version of `vc-previous-version'." |
fff4a046 DN |
376 | (let ((default-directory (file-name-directory (expand-file-name file))) |
377 | (file (file-name-nondirectory file))) | |
378 | (vc-git-symbolic-commit | |
379 | (with-temp-buffer | |
380 | (and | |
381 | (zerop | |
382 | (call-process "git" nil '(t nil) nil "rev-list" | |
383 | "-2" rev "--" file)) | |
384 | (goto-char (point-max)) | |
385 | (bolp) | |
386 | (zerop (forward-line -1)) | |
387 | (not (bobp)) | |
388 | (buffer-substring-no-properties | |
389 | (point) | |
390 | (1- (point-max)))))))) | |
391 | ||
392 | (defun vc-git-next-version (file rev) | |
53cc90ab | 393 | "Git-specific version of `vc-next-version'." |
fff4a046 DN |
394 | (let* ((default-directory (file-name-directory |
395 | (expand-file-name file))) | |
396 | (file (file-name-nondirectory file)) | |
397 | (current-rev | |
398 | (with-temp-buffer | |
399 | (and | |
400 | (zerop | |
401 | (call-process "git" nil '(t nil) nil "rev-list" | |
402 | "-1" rev "--" file)) | |
403 | (goto-char (point-max)) | |
404 | (bolp) | |
405 | (zerop (forward-line -1)) | |
406 | (bobp) | |
407 | (buffer-substring-no-properties | |
408 | (point) | |
409 | (1- (point-max))))))) | |
410 | (and current-rev | |
411 | (vc-git-symbolic-commit | |
412 | (with-temp-buffer | |
413 | (and | |
414 | (zerop | |
415 | (call-process "git" nil '(t nil) nil "rev-list" | |
416 | "HEAD" "--" file)) | |
417 | (goto-char (point-min)) | |
418 | (search-forward current-rev nil t) | |
419 | (zerop (forward-line -1)) | |
420 | (buffer-substring-no-properties | |
421 | (point) | |
422 | (progn (forward-line 1) (1- (point)))))))))) | |
423 | ||
8b38ce20 DN |
424 | (defun vc-git-delete-file (file) |
425 | (vc-git-command nil 0 file "rm" "-f" "--")) | |
b0f90937 | 426 | |
8b38ce20 DN |
427 | (defun vc-git-rename-file (old new) |
428 | (vc-git-command nil 0 (list old new) "mv" "-f" "--")) | |
b0f90937 | 429 | |
fff4a046 | 430 | \f |
b747d346 | 431 | ;;; Internal commands |
fff4a046 | 432 | |
53cc90ab DN |
433 | (defun vc-git-root (file) |
434 | (vc-find-root file ".git")) | |
435 | ||
8b9783e0 | 436 | (defun vc-git-command (buffer okstatus file-or-list &rest flags) |
53cc90ab DN |
437 | "A wrapper around `vc-do-command' for use in vc-git.el. |
438 | The difference to vc-do-command is that this function always invokes `git'." | |
8b9783e0 | 439 | (apply 'vc-do-command buffer okstatus "git" file-or-list flags)) |
53cc90ab | 440 | |
fff4a046 DN |
441 | (defun vc-git--run-command-string (file &rest args) |
442 | "Run a git command on FILE and return its output as string." | |
443 | (let* ((ok t) | |
444 | (str (with-output-to-string | |
445 | (with-current-buffer standard-output | |
446 | (unless (eq 0 (apply #'call-process "git" nil '(t nil) nil | |
447 | (append args (list (file-relative-name file))))) | |
448 | (setq ok nil)))))) | |
449 | (and ok str))) | |
450 | ||
fff4a046 DN |
451 | (defun vc-git-symbolic-commit (commit) |
452 | "Translate COMMIT string into symbolic form. | |
453 | Returns nil if not possible." | |
454 | (and commit | |
455 | (with-temp-buffer | |
456 | (and | |
457 | (zerop | |
458 | (call-process "git" nil '(t nil) nil "name-rev" | |
459 | "--name-only" "--tags" | |
460 | commit)) | |
461 | (goto-char (point-min)) | |
462 | (= (forward-line 2) 1) | |
463 | (bolp) | |
464 | (buffer-substring-no-properties (point-min) (1- (point-max))))))) | |
465 | ||
466 | (provide 'vc-git) | |
53cc90ab | 467 | |
328471d9 | 468 | ;; arch-tag: bd10664a-0e5b-48f5-a877-6c17b135be12 |
53cc90ab | 469 | ;;; vc-git.el ends here |