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1 | ;;; git.el --- A user interface for git |
2 | ||
3 | ;; Copyright (C) 2005, 2006 Alexandre Julliard <julliard@winehq.org> | |
4 | ||
5 | ;; Version: 1.0 | |
6 | ||
7 | ;; This program is free software; you can redistribute it and/or | |
8 | ;; modify it under the terms of the GNU General Public License as | |
9 | ;; published by the Free Software Foundation; either version 2 of | |
10 | ;; the License, or (at your option) any later version. | |
11 | ;; | |
12 | ;; This program is distributed in the hope that it will be | |
13 | ;; useful, but WITHOUT ANY WARRANTY; without even the implied | |
14 | ;; warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR | |
15 | ;; PURPOSE. See the GNU General Public License for more details. | |
16 | ;; | |
17 | ;; You should have received a copy of the GNU General Public | |
18 | ;; License along with this program; if not, write to the Free | |
19 | ;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, | |
20 | ;; MA 02111-1307 USA | |
21 | ||
22 | ;;; Commentary: | |
23 | ||
24 | ;; This file contains an interface for the git version control | |
25 | ;; system. It provides easy access to the most frequently used git | |
26 | ;; commands. The user interface is as far as possible identical to | |
27 | ;; that of the PCL-CVS mode. | |
28 | ;; | |
29 | ;; To install: put this file on the load-path and place the following | |
30 | ;; in your .emacs file: | |
31 | ;; | |
32 | ;; (require 'git) | |
33 | ;; | |
34 | ;; To start: `M-x git-status' | |
35 | ;; | |
36 | ;; TODO | |
37 | ;; - portability to XEmacs | |
38 | ;; - better handling of subprocess errors | |
39 | ;; - hook into file save (after-save-hook) | |
40 | ;; - diff against other branch | |
41 | ;; - renaming files from the status buffer | |
42 | ;; - support for appending signed-off-by | |
43 | ;; - creating tags | |
44 | ;; - fetch/pull | |
45 | ;; - switching branches | |
46 | ;; - revlist browser | |
47 | ;; - git-show-branch browser | |
48 | ;; - customize support | |
49 | ;; - menus | |
50 | ;; | |
51 | ||
52 | (eval-when-compile (require 'cl)) | |
53 | (require 'ewoc) | |
54 | ||
55 | ||
56 | ;;;; Faces | |
57 | ;;;; ------------------------------------------------------------ | |
58 | ||
59 | (defface git-status-face | |
60 | '((((class color) (background light)) (:foreground "purple"))) | |
61 | "Git mode face used to highlight added and modified files.") | |
62 | ||
63 | (defface git-unmerged-face | |
64 | '((((class color) (background light)) (:foreground "red" :bold t))) | |
65 | "Git mode face used to highlight unmerged files.") | |
66 | ||
67 | (defface git-unknown-face | |
68 | '((((class color) (background light)) (:foreground "goldenrod" :bold t))) | |
69 | "Git mode face used to highlight unknown files.") | |
70 | ||
71 | (defface git-uptodate-face | |
72 | '((((class color) (background light)) (:foreground "grey60"))) | |
73 | "Git mode face used to highlight up-to-date files.") | |
74 | ||
75 | (defface git-ignored-face | |
76 | '((((class color) (background light)) (:foreground "grey60"))) | |
77 | "Git mode face used to highlight ignored files.") | |
78 | ||
79 | (defface git-mark-face | |
80 | '((((class color) (background light)) (:foreground "red" :bold t))) | |
81 | "Git mode face used for the file marks.") | |
82 | ||
83 | (defface git-header-face | |
84 | '((((class color) (background light)) (:foreground "blue"))) | |
85 | "Git mode face used for commit headers.") | |
86 | ||
87 | (defface git-separator-face | |
88 | '((((class color) (background light)) (:foreground "brown"))) | |
89 | "Git mode face used for commit separator.") | |
90 | ||
91 | (defface git-permission-face | |
92 | '((((class color) (background light)) (:foreground "green" :bold t))) | |
93 | "Git mode face used for permission changes.") | |
94 | ||
95 | (defvar git-committer-name nil | |
96 | "*User name to use for commits. | |
97 | If not set, fall back to `add-log-full-name' and then `user-full-name'.") | |
98 | ||
99 | (defvar git-committer-email nil | |
100 | "*Email address to use for commits. | |
101 | If not set, fall back to `add-log-mailing-address' and then `user-mail-address'.") | |
102 | ||
103 | (defvar git-commits-coding-system 'utf-8 | |
104 | "Default coding system for git commits.") | |
105 | ||
106 | (defconst git-log-msg-separator "--- log message follows this line ---") | |
107 | ||
108 | (defconst git-per-dir-ignore-file ".gitignore" | |
109 | "Name of the per-directory ignore file.") | |
110 | ||
111 | ||
112 | ;;;; Utilities | |
113 | ;;;; ------------------------------------------------------------ | |
114 | ||
115 | (defun git-get-env-strings (env) | |
116 | "Build a list of NAME=VALUE strings from a list of environment strings." | |
117 | (mapcar (lambda (entry) (concat (car entry) "=" (cdr entry))) env)) | |
118 | ||
119 | (defun git-call-process-env (buffer env &rest args) | |
120 | "Wrapper for call-process that sets environment strings." | |
121 | (if env | |
122 | (apply #'call-process "env" nil buffer nil | |
123 | (append (git-get-env-strings env) (list "git") args)) | |
124 | (apply #'call-process "git" nil buffer nil args))) | |
125 | ||
126 | (defun git-run-process-region (buffer start end program args) | |
127 | "Run a git process with a buffer region as input." | |
128 | (let ((output-buffer (current-buffer)) | |
129 | (dir default-directory)) | |
130 | (with-current-buffer buffer | |
131 | (cd dir) | |
132 | (apply #'call-process-region start end program | |
133 | nil (list output-buffer nil) nil args)))) | |
134 | ||
135 | (defun git-run-command-buffer (buffer-name &rest args) | |
136 | "Run a git command, sending the output to a buffer named BUFFER-NAME." | |
137 | (let ((dir default-directory) | |
138 | (buffer (get-buffer-create buffer-name))) | |
139 | (message "Running git %s..." (car args)) | |
140 | (with-current-buffer buffer | |
141 | (let ((default-directory dir) | |
142 | (buffer-read-only nil)) | |
143 | (erase-buffer) | |
144 | (apply #'git-call-process-env buffer nil args))) | |
145 | (message "Running git %s...done" (car args)) | |
146 | buffer)) | |
147 | ||
148 | (defun git-run-command (buffer env &rest args) | |
149 | (message "Running git %s..." (car args)) | |
150 | (apply #'git-call-process-env buffer env args) | |
151 | (message "Running git %s...done" (car args))) | |
152 | ||
153 | (defun git-run-command-region (buffer start end env &rest args) | |
154 | "Run a git command with specified buffer region as input." | |
155 | (message "Running git %s..." (car args)) | |
156 | (unless (eq 0 (if env | |
157 | (git-run-process-region | |
158 | buffer start end "env" | |
159 | (append (git-get-env-strings env) (list "git") args)) | |
160 | (git-run-process-region | |
161 | buffer start end "git" args))) | |
162 | (error "Failed to run \"git %s\":\n%s" (mapconcat (lambda (x) x) args " ") (buffer-string))) | |
163 | (message "Running git %s...done" (car args))) | |
164 | ||
165 | (defun git-get-string-sha1 (string) | |
166 | "Read a SHA1 from the specified string." | |
167 | (let ((pos (string-match "[0-9a-f]\\{40\\}" string))) | |
168 | (and pos (substring string pos (match-end 0))))) | |
169 | ||
170 | (defun git-get-committer-name () | |
171 | "Return the name to use as GIT_COMMITTER_NAME." | |
172 | ; copied from log-edit | |
173 | (or git-committer-name | |
174 | (and (boundp 'add-log-full-name) add-log-full-name) | |
175 | (and (fboundp 'user-full-name) (user-full-name)) | |
176 | (and (boundp 'user-full-name) user-full-name))) | |
177 | ||
178 | (defun git-get-committer-email () | |
179 | "Return the email address to use as GIT_COMMITTER_EMAIL." | |
180 | ; copied from log-edit | |
181 | (or git-committer-email | |
182 | (and (boundp 'add-log-mailing-address) add-log-mailing-address) | |
183 | (and (fboundp 'user-mail-address) (user-mail-address)) | |
184 | (and (boundp 'user-mail-address) user-mail-address))) | |
185 | ||
186 | (defun git-escape-file-name (name) | |
187 | "Escape a file name if necessary." | |
188 | (if (string-match "[\n\t\"\\]" name) | |
189 | (concat "\"" | |
190 | (mapconcat (lambda (c) | |
191 | (case c | |
192 | (?\n "\\n") | |
193 | (?\t "\\t") | |
194 | (?\\ "\\\\") | |
195 | (?\" "\\\"") | |
196 | (t (char-to-string c)))) | |
197 | name "") | |
198 | "\"") | |
199 | name)) | |
200 | ||
201 | (defun git-get-top-dir (dir) | |
202 | "Retrieve the top-level directory of a git tree." | |
203 | (let ((cdup (with-output-to-string | |
204 | (with-current-buffer standard-output | |
205 | (cd dir) | |
206 | (unless (eq 0 (call-process "git" nil t nil "rev-parse" "--show-cdup")) | |
207 | (error "cannot find top-level git tree for %s." dir)))))) | |
208 | (expand-file-name (concat (file-name-as-directory dir) | |
209 | (car (split-string cdup "\n")))))) | |
210 | ||
211 | ;stolen from pcl-cvs | |
212 | (defun git-append-to-ignore (file) | |
213 | "Add a file name to the ignore file in its directory." | |
214 | (let* ((fullname (expand-file-name file)) | |
215 | (dir (file-name-directory fullname)) | |
216 | (name (file-name-nondirectory fullname))) | |
217 | (save-window-excursion | |
218 | (set-buffer (find-file-noselect (expand-file-name git-per-dir-ignore-file dir))) | |
219 | (goto-char (point-max)) | |
220 | (unless (zerop (current-column)) (insert "\n")) | |
221 | (insert name "\n") | |
222 | (sort-lines nil (point-min) (point-max)) | |
223 | (save-buffer)))) | |
224 | ||
225 | ||
226 | ;;;; Wrappers for basic git commands | |
227 | ;;;; ------------------------------------------------------------ | |
228 | ||
229 | (defun git-rev-parse (rev) | |
230 | "Parse a revision name and return its SHA1." | |
231 | (git-get-string-sha1 | |
232 | (with-output-to-string | |
233 | (with-current-buffer standard-output | |
234 | (git-call-process-env t nil "rev-parse" rev))))) | |
235 | ||
236 | (defun git-symbolic-ref (ref) | |
237 | "Wrapper for the git-symbolic-ref command." | |
238 | (car | |
239 | (split-string | |
240 | (with-output-to-string | |
241 | (with-current-buffer standard-output | |
242 | (git-call-process-env t nil "symbolic-ref" ref))) | |
243 | "\n"))) | |
244 | ||
245 | (defun git-update-ref (ref val &optional oldval) | |
246 | "Update a reference by calling git-update-ref." | |
247 | (apply #'git-call-process-env nil nil "update-ref" ref val (if oldval (list oldval)))) | |
248 | ||
249 | (defun git-read-tree (tree &optional index-file) | |
250 | "Read a tree into the index file." | |
251 | (apply #'git-call-process-env nil | |
252 | (if index-file `(("GIT_INDEX_FILE" . ,index-file)) nil) | |
253 | "read-tree" (if tree (list tree)))) | |
254 | ||
255 | (defun git-write-tree (&optional index-file) | |
256 | "Call git-write-tree and return the resulting tree SHA1 as a string." | |
257 | (git-get-string-sha1 | |
258 | (with-output-to-string | |
259 | (with-current-buffer standard-output | |
260 | (git-call-process-env t | |
261 | (if index-file `(("GIT_INDEX_FILE" . ,index-file)) nil) | |
262 | "write-tree"))))) | |
263 | ||
264 | (defun git-commit-tree (buffer tree head) | |
265 | "Call git-commit-tree with buffer as input and return the resulting commit SHA1." | |
266 | (let ((author-name (git-get-committer-name)) | |
267 | (author-email (git-get-committer-email)) | |
268 | author-date log-start log-end args) | |
269 | (when head | |
270 | (push "-p" args) | |
271 | (push head args)) | |
272 | (with-current-buffer buffer | |
273 | (goto-char (point-min)) | |
274 | (if | |
275 | (setq log-start (re-search-forward (concat "^" git-log-msg-separator "\n") nil t)) | |
276 | (save-restriction | |
277 | (narrow-to-region (point-min) log-start) | |
278 | (goto-char (point-min)) | |
279 | (when (re-search-forward "^Author: +\\(.*?\\) *<\\(.*\\)> *$" nil t) | |
280 | (setq author-name (match-string 1) | |
281 | author-email (match-string 2))) | |
282 | (goto-char (point-min)) | |
283 | (when (re-search-forward "^Date: +\\(.*\\)$" nil t) | |
284 | (setq author-date (match-string 1))) | |
285 | (goto-char (point-min)) | |
286 | (while (re-search-forward "^Parent: +\\([0-9a-f]+\\)" nil t) | |
287 | (unless (string-equal head (match-string 1)) | |
288 | (push "-p" args) | |
289 | (push (match-string 1) args)))) | |
290 | (setq log-start (point-min))) | |
291 | (setq log-end (point-max))) | |
292 | (git-get-string-sha1 | |
293 | (with-output-to-string | |
294 | (with-current-buffer standard-output | |
295 | (let ((coding-system-for-write git-commits-coding-system) | |
296 | (env `(("GIT_AUTHOR_NAME" . ,author-name) | |
297 | ("GIT_AUTHOR_EMAIL" . ,author-email) | |
298 | ("GIT_COMMITTER_NAME" . ,(git-get-committer-name)) | |
299 | ("GIT_COMMITTER_EMAIL" . ,(git-get-committer-email))))) | |
300 | (when author-date (push `("GIT_AUTHOR_DATE" . ,author-date) env)) | |
301 | (apply #'git-run-command-region | |
302 | buffer log-start log-end env | |
303 | "commit-tree" tree (nreverse args)))))))) | |
304 | ||
305 | (defun git-empty-db-p () | |
306 | "Check if the git db is empty (no commit done yet)." | |
307 | (not (eq 0 (call-process "git" nil nil nil "rev-parse" "--verify" "HEAD")))) | |
308 | ||
309 | (defun git-get-merge-heads () | |
310 | "Retrieve the merge heads from the MERGE_HEAD file if present." | |
311 | (let (heads) | |
312 | (when (file-readable-p ".git/MERGE_HEAD") | |
313 | (with-temp-buffer | |
314 | (insert-file-contents ".git/MERGE_HEAD" nil nil nil t) | |
315 | (goto-char (point-min)) | |
316 | (while (re-search-forward "[0-9a-f]\\{40\\}" nil t) | |
317 | (push (match-string 0) heads)))) | |
318 | (nreverse heads))) | |
319 | ||
320 | ;;;; File info structure | |
321 | ;;;; ------------------------------------------------------------ | |
322 | ||
323 | ; fileinfo structure stolen from pcl-cvs | |
324 | (defstruct (git-fileinfo | |
325 | (:copier nil) | |
326 | (:constructor git-create-fileinfo (state name &optional old-perm new-perm rename-state orig-name marked)) | |
327 | (:conc-name git-fileinfo->)) | |
328 | marked ;; t/nil | |
329 | state ;; current state | |
330 | name ;; file name | |
331 | old-perm new-perm ;; permission flags | |
332 | rename-state ;; rename or copy state | |
333 | orig-name ;; original name for renames or copies | |
334 | needs-refresh) ;; whether file needs to be refreshed | |
335 | ||
336 | (defvar git-status nil) | |
337 | ||
338 | (defun git-clear-status (status) | |
339 | "Remove everything from the status list." | |
340 | (ewoc-filter status (lambda (info) nil))) | |
341 | ||
342 | (defun git-set-files-state (files state) | |
343 | "Set the state of a list of files." | |
344 | (dolist (info files) | |
345 | (unless (eq (git-fileinfo->state info) state) | |
346 | (setf (git-fileinfo->state info) state) | |
347 | (setf (git-fileinfo->rename-state info) nil) | |
348 | (setf (git-fileinfo->orig-name info) nil) | |
349 | (setf (git-fileinfo->needs-refresh info) t)))) | |
350 | ||
351 | (defun git-state-code (code) | |
352 | "Convert from a string to a added/deleted/modified state." | |
353 | (case (string-to-char code) | |
354 | (?M 'modified) | |
355 | (?? 'unknown) | |
356 | (?A 'added) | |
357 | (?D 'deleted) | |
358 | (?U 'unmerged) | |
359 | (t nil))) | |
360 | ||
361 | (defun git-status-code-as-string (code) | |
362 | "Format a git status code as string." | |
363 | (case code | |
364 | ('modified (propertize "Modified" 'face 'git-status-face)) | |
365 | ('unknown (propertize "Unknown " 'face 'git-unknown-face)) | |
366 | ('added (propertize "Added " 'face 'git-status-face)) | |
367 | ('deleted (propertize "Deleted " 'face 'git-status-face)) | |
368 | ('unmerged (propertize "Unmerged" 'face 'git-unmerged-face)) | |
369 | ('uptodate (propertize "Uptodate" 'face 'git-uptodate-face)) | |
370 | ('ignored (propertize "Ignored " 'face 'git-ignored-face)) | |
371 | (t "? "))) | |
372 | ||
373 | (defun git-rename-as-string (info) | |
374 | "Return a string describing the copy or rename associated with INFO, or an empty string if none." | |
375 | (let ((state (git-fileinfo->rename-state info))) | |
376 | (if state | |
377 | (propertize | |
378 | (concat " (" | |
379 | (if (eq state 'copy) "copied from " | |
380 | (if (eq (git-fileinfo->state info) 'added) "renamed to " | |
381 | "renamed from ")) | |
382 | (git-escape-file-name (git-fileinfo->orig-name info)) | |
383 | ")") 'face 'git-status-face) | |
384 | ""))) | |
385 | ||
386 | (defun git-permissions-as-string (old-perm new-perm) | |
387 | "Format a permission change as string." | |
388 | (propertize | |
389 | (if (or (not old-perm) | |
390 | (not new-perm) | |
391 | (eq 0 (logand #O111 (logxor old-perm new-perm)))) | |
392 | " " | |
393 | (if (eq 0 (logand #O111 old-perm)) "+x" "-x")) | |
394 | 'face 'git-permission-face)) | |
395 | ||
396 | (defun git-fileinfo-prettyprint (info) | |
397 | "Pretty-printer for the git-fileinfo structure." | |
398 | (insert (format " %s %s %s %s%s" | |
399 | (if (git-fileinfo->marked info) (propertize "*" 'face 'git-mark-face) " ") | |
400 | (git-status-code-as-string (git-fileinfo->state info)) | |
401 | (git-permissions-as-string (git-fileinfo->old-perm info) (git-fileinfo->new-perm info)) | |
402 | (git-escape-file-name (git-fileinfo->name info)) | |
403 | (git-rename-as-string info)))) | |
404 | ||
405 | (defun git-parse-status (status) | |
406 | "Parse the output of git-diff-index in the current buffer." | |
407 | (goto-char (point-min)) | |
408 | (while (re-search-forward | |
409 | ":\\([0-7]\\{6\\}\\) \\([0-7]\\{6\\}\\) [0-9a-f]\\{40\\} [0-9a-f]\\{40\\} \\(\\([ADMU]\\)\0\\([^\0]+\\)\\|\\([CR]\\)[0-9]*\0\\([^\0]+\\)\0\\([^\0]+\\)\\)\0" | |
410 | nil t 1) | |
411 | (let ((old-perm (string-to-number (match-string 1) 8)) | |
412 | (new-perm (string-to-number (match-string 2) 8)) | |
413 | (state (or (match-string 4) (match-string 6))) | |
414 | (name (or (match-string 5) (match-string 7))) | |
415 | (new-name (match-string 8))) | |
416 | (if new-name ; copy or rename | |
417 | (if (eq ?C (string-to-char state)) | |
418 | (ewoc-enter-last status (git-create-fileinfo 'added new-name old-perm new-perm 'copy name)) | |
419 | (ewoc-enter-last status (git-create-fileinfo 'deleted name 0 0 'rename new-name)) | |
420 | (ewoc-enter-last status (git-create-fileinfo 'added new-name old-perm new-perm 'rename name))) | |
421 | (ewoc-enter-last status (git-create-fileinfo (git-state-code state) name old-perm new-perm)))))) | |
422 | ||
423 | (defun git-find-status-file (status file) | |
424 | "Find a given file in the status ewoc and return its node." | |
425 | (let ((node (ewoc-nth status 0))) | |
426 | (while (and node (not (string= file (git-fileinfo->name (ewoc-data node))))) | |
427 | (setq node (ewoc-next status node))) | |
428 | node)) | |
429 | ||
430 | (defun git-parse-ls-files (status default-state &optional skip-existing) | |
431 | "Parse the output of git-ls-files in the current buffer." | |
432 | (goto-char (point-min)) | |
433 | (let (infolist) | |
434 | (while (re-search-forward "\\([HMRCK?]\\) \\([^\0]*\\)\0" nil t 1) | |
435 | (let ((state (match-string 1)) | |
436 | (name (match-string 2))) | |
437 | (unless (and skip-existing (git-find-status-file status name)) | |
438 | (push (git-create-fileinfo (or (git-state-code state) default-state) name) infolist)))) | |
439 | (dolist (info (nreverse infolist)) | |
440 | (ewoc-enter-last status info)))) | |
441 | ||
442 | (defun git-parse-ls-unmerged (status) | |
443 | "Parse the output of git-ls-files -u in the current buffer." | |
444 | (goto-char (point-min)) | |
445 | (let (files) | |
446 | (while (re-search-forward "[0-7]\\{6\\} [0-9a-f]\\{40\\} [123]\t\\([^\0]+\\)\0" nil t) | |
447 | (let ((node (git-find-status-file status (match-string 1)))) | |
448 | (when node (push (ewoc-data node) files)))) | |
449 | (git-set-files-state files 'unmerged))) | |
450 | ||
451 | (defun git-add-status-file (state name) | |
452 | "Add a new file to the status list (if not existing already) and return its node." | |
453 | (unless git-status (error "Not in git-status buffer.")) | |
454 | (or (git-find-status-file git-status name) | |
455 | (ewoc-enter-last git-status (git-create-fileinfo state name)))) | |
456 | ||
457 | (defun git-marked-files () | |
458 | "Return a list of all marked files, or if none a list containing just the file at cursor position." | |
459 | (unless git-status (error "Not in git-status buffer.")) | |
460 | (or (ewoc-collect git-status (lambda (info) (git-fileinfo->marked info))) | |
461 | (list (ewoc-data (ewoc-locate git-status))))) | |
462 | ||
463 | (defun git-marked-files-state (&rest states) | |
464 | "Return marked files that are in the specified states." | |
465 | (let ((files (git-marked-files)) | |
466 | result) | |
467 | (dolist (info files) | |
468 | (when (memq (git-fileinfo->state info) states) | |
469 | (push info result))) | |
470 | result)) | |
471 | ||
472 | (defun git-refresh-files () | |
473 | "Refresh all files that need it and clear the needs-refresh flag." | |
474 | (unless git-status (error "Not in git-status buffer.")) | |
475 | (ewoc-map | |
476 | (lambda (info) | |
477 | (let ((refresh (git-fileinfo->needs-refresh info))) | |
478 | (setf (git-fileinfo->needs-refresh info) nil) | |
479 | refresh)) | |
480 | git-status) | |
481 | ; move back to goal column | |
482 | (when goal-column (move-to-column goal-column))) | |
483 | ||
484 | (defun git-refresh-ewoc-hf (status) | |
485 | "Refresh the ewoc header and footer." | |
486 | (let ((branch (git-symbolic-ref "HEAD")) | |
487 | (head (if (git-empty-db-p) "Nothing committed yet" | |
488 | (substring (git-rev-parse "HEAD") 0 10))) | |
489 | (merge-heads (git-get-merge-heads))) | |
490 | (ewoc-set-hf status | |
491 | (format "Directory: %s\nBranch: %s\nHead: %s%s\n" | |
492 | default-directory | |
493 | (if (string-match "^refs/heads/" branch) | |
494 | (substring branch (match-end 0)) | |
495 | branch) | |
496 | head | |
497 | (if merge-heads | |
498 | (concat "\nMerging: " | |
499 | (mapconcat (lambda (str) (substring str 0 10)) merge-heads " ")) | |
500 | "")) | |
501 | (if (ewoc-nth status 0) "" " No changes.")))) | |
502 | ||
503 | (defun git-get-filenames (files) | |
504 | (mapcar (lambda (info) (git-fileinfo->name info)) files)) | |
505 | ||
506 | (defun git-update-index (index-file files) | |
507 | "Run git-update-index on a list of files." | |
508 | (let ((env (and index-file `(("GIT_INDEX_FILE" . ,index-file)))) | |
509 | added deleted modified) | |
510 | (dolist (info files) | |
511 | (case (git-fileinfo->state info) | |
512 | ('added (push info added)) | |
513 | ('deleted (push info deleted)) | |
514 | ('modified (push info modified)))) | |
515 | (when added | |
516 | (apply #'git-run-command nil env "update-index" "--add" "--" (git-get-filenames added))) | |
517 | (when deleted | |
518 | (apply #'git-run-command nil env "update-index" "--remove" "--" (git-get-filenames deleted))) | |
519 | (when modified | |
520 | (apply #'git-run-command nil env "update-index" "--" (git-get-filenames modified))))) | |
521 | ||
522 | (defun git-do-commit () | |
523 | "Perform the actual commit using the current buffer as log message." | |
524 | (interactive) | |
525 | (let ((buffer (current-buffer)) | |
526 | (index-file (make-temp-file "gitidx"))) | |
527 | (with-current-buffer log-edit-parent-buffer | |
528 | (if (git-marked-files-state 'unmerged) | |
529 | (message "You cannot commit unmerged files, resolve them first.") | |
530 | (unwind-protect | |
531 | (let ((files (git-marked-files-state 'added 'deleted 'modified)) | |
532 | head head-tree) | |
533 | (unless (git-empty-db-p) | |
534 | (setq head (git-rev-parse "HEAD") | |
535 | head-tree (git-rev-parse "HEAD^{tree}"))) | |
536 | (if files | |
537 | (progn | |
538 | (git-read-tree head-tree index-file) | |
539 | (git-update-index nil files) ;update both the default index | |
540 | (git-update-index index-file files) ;and the temporary one | |
541 | (let ((tree (git-write-tree index-file))) | |
542 | (if (or (not (string-equal tree head-tree)) | |
543 | (yes-or-no-p "The tree was not modified, do you really want to perform an empty commit? ")) | |
544 | (let ((commit (git-commit-tree buffer tree head))) | |
545 | (git-update-ref "HEAD" commit head) | |
546 | (condition-case nil (delete-file ".git/MERGE_HEAD") (error nil)) | |
547 | (with-current-buffer buffer (erase-buffer)) | |
548 | (git-set-files-state files 'uptodate) | |
549 | (git-refresh-files) | |
550 | (git-refresh-ewoc-hf git-status) | |
551 | (message "Committed %s." commit)) | |
552 | (message "Commit aborted.")))) | |
553 | (message "No files to commit."))) | |
554 | (delete-file index-file)))))) | |
555 | ||
556 | ||
557 | ;;;; Interactive functions | |
558 | ;;;; ------------------------------------------------------------ | |
559 | ||
560 | (defun git-mark-file () | |
561 | "Mark the file that the cursor is on and move to the next one." | |
562 | (interactive) | |
563 | (unless git-status (error "Not in git-status buffer.")) | |
564 | (let* ((pos (ewoc-locate git-status)) | |
565 | (info (ewoc-data pos))) | |
566 | (setf (git-fileinfo->marked info) t) | |
567 | (ewoc-invalidate git-status pos) | |
568 | (ewoc-goto-next git-status 1))) | |
569 | ||
570 | (defun git-unmark-file () | |
571 | "Unmark the file that the cursor is on and move to the next one." | |
572 | (interactive) | |
573 | (unless git-status (error "Not in git-status buffer.")) | |
574 | (let* ((pos (ewoc-locate git-status)) | |
575 | (info (ewoc-data pos))) | |
576 | (setf (git-fileinfo->marked info) nil) | |
577 | (ewoc-invalidate git-status pos) | |
578 | (ewoc-goto-next git-status 1))) | |
579 | ||
580 | (defun git-unmark-file-up () | |
581 | "Unmark the file that the cursor is on and move to the previous one." | |
582 | (interactive) | |
583 | (unless git-status (error "Not in git-status buffer.")) | |
584 | (let* ((pos (ewoc-locate git-status)) | |
585 | (info (ewoc-data pos))) | |
586 | (setf (git-fileinfo->marked info) nil) | |
587 | (ewoc-invalidate git-status pos) | |
588 | (ewoc-goto-prev git-status 1))) | |
589 | ||
590 | (defun git-mark-all () | |
591 | "Mark all files." | |
592 | (interactive) | |
593 | (unless git-status (error "Not in git-status buffer.")) | |
594 | (ewoc-map (lambda (info) (setf (git-fileinfo->marked info) t) t) git-status) | |
595 | ; move back to goal column after invalidate | |
596 | (when goal-column (move-to-column goal-column))) | |
597 | ||
598 | (defun git-unmark-all () | |
599 | "Unmark all files." | |
600 | (interactive) | |
601 | (unless git-status (error "Not in git-status buffer.")) | |
602 | (ewoc-map (lambda (info) (setf (git-fileinfo->marked info) nil) t) git-status) | |
603 | ; move back to goal column after invalidate | |
604 | (when goal-column (move-to-column goal-column))) | |
605 | ||
606 | (defun git-toggle-all-marks () | |
607 | "Toggle all file marks." | |
608 | (interactive) | |
609 | (unless git-status (error "Not in git-status buffer.")) | |
610 | (ewoc-map (lambda (info) (setf (git-fileinfo->marked info) (not (git-fileinfo->marked info))) t) git-status) | |
611 | ; move back to goal column after invalidate | |
612 | (when goal-column (move-to-column goal-column))) | |
613 | ||
614 | (defun git-next-file (&optional n) | |
615 | "Move the selection down N files." | |
616 | (interactive "p") | |
617 | (unless git-status (error "Not in git-status buffer.")) | |
618 | (ewoc-goto-next git-status n)) | |
619 | ||
620 | (defun git-prev-file (&optional n) | |
621 | "Move the selection up N files." | |
622 | (interactive "p") | |
623 | (unless git-status (error "Not in git-status buffer.")) | |
624 | (ewoc-goto-prev git-status n)) | |
625 | ||
626 | (defun git-add-file () | |
627 | "Add marked file(s) to the index cache." | |
628 | (interactive) | |
629 | (let ((files (git-marked-files-state 'unknown))) | |
630 | (unless files | |
631 | (push (ewoc-data | |
632 | (git-add-status-file 'added (file-relative-name | |
633 | (read-file-name "File to add: " nil nil t)))) | |
634 | files)) | |
635 | (apply #'git-run-command nil nil "update-index" "--info-only" "--add" "--" (git-get-filenames files)) | |
636 | (git-set-files-state files 'added) | |
637 | (git-refresh-files))) | |
638 | ||
639 | (defun git-ignore-file () | |
640 | "Add marked file(s) to the ignore list." | |
641 | (interactive) | |
642 | (let ((files (git-marked-files-state 'unknown))) | |
643 | (unless files | |
644 | (push (ewoc-data | |
645 | (git-add-status-file 'unknown (file-relative-name | |
646 | (read-file-name "File to ignore: " nil nil t)))) | |
647 | files)) | |
648 | (dolist (info files) (git-append-to-ignore (git-fileinfo->name info))) | |
649 | (git-set-files-state files 'ignored) | |
650 | (git-refresh-files))) | |
651 | ||
652 | (defun git-remove-file () | |
653 | "Remove the marked file(s)." | |
654 | (interactive) | |
655 | (let ((files (git-marked-files-state 'added 'modified 'unknown 'uptodate))) | |
656 | (unless files | |
657 | (push (ewoc-data | |
658 | (git-add-status-file 'unknown (file-relative-name | |
659 | (read-file-name "File to remove: " nil nil t)))) | |
660 | files)) | |
661 | (if (yes-or-no-p | |
662 | (format "Remove %d file%s? " (length files) (if (> (length files) 1) "s" ""))) | |
663 | (progn | |
664 | (dolist (info files) | |
665 | (let ((name (git-fileinfo->name info))) | |
666 | (when (file-exists-p name) (delete-file name)))) | |
667 | (apply #'git-run-command nil nil "update-index" "--info-only" "--remove" "--" (git-get-filenames files)) | |
668 | ; remove unknown files from the list, set the others to deleted | |
669 | (ewoc-filter git-status | |
670 | (lambda (info files) | |
671 | (not (and (memq info files) (eq (git-fileinfo->state info) 'unknown)))) | |
672 | files) | |
673 | (git-set-files-state files 'deleted) | |
674 | (git-refresh-files) | |
675 | (unless (ewoc-nth git-status 0) ; refresh header if list is empty | |
676 | (git-refresh-ewoc-hf git-status))) | |
677 | (message "Aborting")))) | |
678 | ||
679 | (defun git-revert-file () | |
680 | "Revert changes to the marked file(s)." | |
681 | (interactive) | |
682 | (let ((files (git-marked-files)) | |
683 | added modified) | |
684 | (when (and files | |
685 | (yes-or-no-p | |
686 | (format "Revert %d file%s? " (length files) (if (> (length files) 1) "s" "")))) | |
687 | (dolist (info files) | |
688 | (case (git-fileinfo->state info) | |
689 | ('added (push info added)) | |
690 | ('deleted (push info modified)) | |
691 | ('unmerged (push info modified)) | |
692 | ('modified (push info modified)))) | |
693 | (when added | |
694 | (apply #'git-run-command nil nil "update-index" "--force-remove" "--" (git-get-filenames added)) | |
695 | (git-set-files-state added 'unknown)) | |
696 | (when modified | |
697 | (apply #'git-run-command nil nil "checkout" "HEAD" (git-get-filenames modified)) | |
698 | (git-set-files-state modified 'uptodate)) | |
699 | (git-refresh-files)))) | |
700 | ||
701 | (defun git-resolve-file () | |
702 | "Resolve conflicts in marked file(s)." | |
703 | (interactive) | |
704 | (let ((files (git-marked-files-state 'unmerged))) | |
705 | (when files | |
706 | (apply #'git-run-command nil nil "update-index" "--info-only" "--" (git-get-filenames files)) | |
707 | (git-set-files-state files 'modified) | |
708 | (git-refresh-files)))) | |
709 | ||
710 | (defun git-remove-handled () | |
711 | "Remove handled files from the status list." | |
712 | (interactive) | |
713 | (ewoc-filter git-status | |
714 | (lambda (info) | |
715 | (not (or (eq (git-fileinfo->state info) 'ignored) | |
716 | (eq (git-fileinfo->state info) 'uptodate))))) | |
717 | (unless (ewoc-nth git-status 0) ; refresh header if list is empty | |
718 | (git-refresh-ewoc-hf git-status))) | |
719 | ||
720 | (defun git-setup-diff-buffer (buffer) | |
721 | "Setup a buffer for displaying a diff." | |
722 | (with-current-buffer buffer | |
723 | (diff-mode) | |
724 | (goto-char (point-min)) | |
725 | (setq buffer-read-only t)) | |
726 | (display-buffer buffer) | |
727 | (shrink-window-if-larger-than-buffer)) | |
728 | ||
729 | (defun git-diff-file () | |
730 | "Diff the marked file(s) against HEAD." | |
731 | (interactive) | |
732 | (let ((files (git-marked-files))) | |
733 | (git-setup-diff-buffer | |
734 | (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M" "HEAD" "--" (git-get-filenames files))))) | |
735 | ||
736 | (defun git-diff-unmerged-file (stage) | |
737 | "Diff the marked unmerged file(s) against the specified stage." | |
738 | (let ((files (git-marked-files))) | |
739 | (git-setup-diff-buffer | |
740 | (apply #'git-run-command-buffer "*git-diff*" "diff-files" "-p" stage "--" (git-get-filenames files))))) | |
741 | ||
742 | (defun git-diff-file-base () | |
743 | "Diff the marked unmerged file(s) against the common base file." | |
744 | (interactive) | |
745 | (git-diff-unmerged-file "-1")) | |
746 | ||
747 | (defun git-diff-file-mine () | |
748 | "Diff the marked unmerged file(s) against my pre-merge version." | |
749 | (interactive) | |
750 | (git-diff-unmerged-file "-2")) | |
751 | ||
752 | (defun git-diff-file-other () | |
753 | "Diff the marked unmerged file(s) against the other's pre-merge version." | |
754 | (interactive) | |
755 | (git-diff-unmerged-file "-3")) | |
756 | ||
757 | (defun git-diff-file-combined () | |
758 | "Do a combined diff of the marked unmerged file(s)." | |
759 | (interactive) | |
760 | (git-diff-unmerged-file "-c")) | |
761 | ||
762 | (defun git-diff-file-idiff () | |
763 | "Perform an interactive diff on the current file." | |
764 | (interactive) | |
765 | (error "Interactive diffs not implemented yet.")) | |
766 | ||
767 | (defun git-log-file () | |
768 | "Display a log of changes to the marked file(s)." | |
769 | (interactive) | |
770 | (let* ((files (git-marked-files)) | |
771 | (coding-system-for-read git-commits-coding-system) | |
772 | (buffer (apply #'git-run-command-buffer "*git-log*" "rev-list" "--pretty" "HEAD" "--" (git-get-filenames files)))) | |
773 | (with-current-buffer buffer | |
774 | ; (git-log-mode) FIXME: implement log mode | |
775 | (goto-char (point-min)) | |
776 | (setq buffer-read-only t)) | |
777 | (display-buffer buffer))) | |
778 | ||
779 | (defun git-log-edit-files () | |
780 | "Return a list of marked files for use in the log-edit buffer." | |
781 | (with-current-buffer log-edit-parent-buffer | |
782 | (git-get-filenames (git-marked-files-state 'added 'deleted 'modified)))) | |
783 | ||
784 | (defun git-commit-file () | |
785 | "Commit the marked file(s), asking for a commit message." | |
786 | (interactive) | |
787 | (unless git-status (error "Not in git-status buffer.")) | |
788 | (let ((buffer (get-buffer-create "*git-commit*")) | |
789 | (merge-heads (git-get-merge-heads)) | |
790 | (dir default-directory)) | |
791 | (with-current-buffer buffer | |
792 | (when (eq 0 (buffer-size)) | |
793 | (cd dir) | |
794 | (erase-buffer) | |
795 | (insert | |
796 | (propertize | |
797 | (format "Author: %s <%s>\n%s" | |
798 | (git-get-committer-name) (git-get-committer-email) | |
799 | (if merge-heads | |
800 | (format "Parent: %s\n%s\n" | |
801 | (git-rev-parse "HEAD") | |
802 | (mapconcat (lambda (str) (concat "Parent: " str)) merge-heads "\n")) | |
803 | "")) | |
804 | 'face 'git-header-face) | |
805 | (propertize git-log-msg-separator 'face 'git-separator-face) | |
806 | "\n") | |
807 | (when (and merge-heads (file-readable-p ".git/MERGE_MSG")) | |
808 | (insert-file-contents ".git/MERGE_MSG")))) | |
809 | (log-edit #'git-do-commit nil #'git-log-edit-files buffer))) | |
810 | ||
811 | (defun git-find-file () | |
812 | "Visit the current file in its own buffer." | |
813 | (interactive) | |
814 | (unless git-status (error "Not in git-status buffer.")) | |
815 | (let ((info (ewoc-data (ewoc-locate git-status)))) | |
816 | (find-file (git-fileinfo->name info)) | |
817 | (when (eq 'unmerged (git-fileinfo->state info)) | |
818 | (smerge-mode)))) | |
819 | ||
820 | (defun git-find-file-imerge () | |
821 | "Visit the current file in interactive merge mode." | |
822 | (interactive) | |
823 | (unless git-status (error "Not in git-status buffer.")) | |
824 | (let ((info (ewoc-data (ewoc-locate git-status)))) | |
825 | (find-file (git-fileinfo->name info)) | |
826 | (smerge-ediff))) | |
827 | ||
828 | (defun git-view-file () | |
829 | "View the current file in its own buffer." | |
830 | (interactive) | |
831 | (unless git-status (error "Not in git-status buffer.")) | |
832 | (let ((info (ewoc-data (ewoc-locate git-status)))) | |
833 | (view-file (git-fileinfo->name info)))) | |
834 | ||
835 | (defun git-refresh-status () | |
836 | "Refresh the git status buffer." | |
837 | (interactive) | |
838 | (let* ((status git-status) | |
839 | (pos (ewoc-locate status)) | |
840 | (cur-name (and pos (git-fileinfo->name (ewoc-data pos))))) | |
841 | (unless status (error "Not in git-status buffer.")) | |
842 | (git-clear-status status) | |
843 | (git-run-command nil nil "update-index" "--info-only" "--refresh") | |
844 | (if (git-empty-db-p) | |
845 | ; we need some special handling for an empty db | |
846 | (with-temp-buffer | |
847 | (git-run-command t nil "ls-files" "-z" "-t" "-c") | |
848 | (git-parse-ls-files status 'added)) | |
849 | (with-temp-buffer | |
850 | (git-run-command t nil "diff-index" "-z" "-M" "HEAD") | |
851 | (git-parse-status status))) | |
852 | (with-temp-buffer | |
853 | (git-run-command t nil "ls-files" "-z" "-u") | |
854 | (git-parse-ls-unmerged status)) | |
855 | (when (file-readable-p ".git/info/exclude") | |
856 | (with-temp-buffer | |
857 | (git-run-command t nil "ls-files" "-z" "-t" "-o" | |
858 | "--exclude-from=.git/info/exclude" | |
859 | (concat "--exclude-per-directory=" git-per-dir-ignore-file)) | |
860 | (git-parse-ls-files status 'unknown))) | |
861 | (git-refresh-files) | |
862 | (git-refresh-ewoc-hf status) | |
863 | ; move point to the current file name if any | |
864 | (let ((node (and cur-name (git-find-status-file status cur-name)))) | |
865 | (when node (ewoc-goto-node status node))))) | |
866 | ||
867 | (defun git-status-quit () | |
868 | "Quit git-status mode." | |
869 | (interactive) | |
870 | (bury-buffer)) | |
871 | ||
872 | ;;;; Major Mode | |
873 | ;;;; ------------------------------------------------------------ | |
874 | ||
875 | (defvar git-status-mode-hook nil | |
876 | "Run after `git-status-mode' is setup.") | |
877 | ||
878 | (defvar git-status-mode-map nil | |
879 | "Keymap for git major mode.") | |
880 | ||
881 | (defvar git-status nil | |
882 | "List of all files managed by the git-status mode.") | |
883 | ||
884 | (unless git-status-mode-map | |
885 | (let ((map (make-keymap)) | |
886 | (diff-map (make-sparse-keymap))) | |
887 | (suppress-keymap map) | |
888 | (define-key map " " 'git-next-file) | |
889 | (define-key map "a" 'git-add-file) | |
890 | (define-key map "c" 'git-commit-file) | |
891 | (define-key map "d" diff-map) | |
892 | (define-key map "=" 'git-diff-file) | |
893 | (define-key map "f" 'git-find-file) | |
894 | (define-key map [RET] 'git-find-file) | |
895 | (define-key map "g" 'git-refresh-status) | |
896 | (define-key map "i" 'git-ignore-file) | |
897 | (define-key map "l" 'git-log-file) | |
898 | (define-key map "m" 'git-mark-file) | |
899 | (define-key map "M" 'git-mark-all) | |
900 | (define-key map "n" 'git-next-file) | |
901 | (define-key map "p" 'git-prev-file) | |
902 | (define-key map "q" 'git-status-quit) | |
903 | (define-key map "r" 'git-remove-file) | |
904 | (define-key map "R" 'git-resolve-file) | |
905 | (define-key map "T" 'git-toggle-all-marks) | |
906 | (define-key map "u" 'git-unmark-file) | |
907 | (define-key map "U" 'git-revert-file) | |
908 | (define-key map "v" 'git-view-file) | |
909 | (define-key map "x" 'git-remove-handled) | |
910 | (define-key map "\C-?" 'git-unmark-file-up) | |
911 | (define-key map "\M-\C-?" 'git-unmark-all) | |
912 | ; the diff submap | |
913 | (define-key diff-map "b" 'git-diff-file-base) | |
914 | (define-key diff-map "c" 'git-diff-file-combined) | |
915 | (define-key diff-map "=" 'git-diff-file) | |
916 | (define-key diff-map "e" 'git-diff-file-idiff) | |
917 | (define-key diff-map "E" 'git-find-file-imerge) | |
918 | (define-key diff-map "m" 'git-diff-file-mine) | |
919 | (define-key diff-map "o" 'git-diff-file-other) | |
920 | (setq git-status-mode-map map))) | |
921 | ||
922 | ;; git mode should only run in the *git status* buffer | |
923 | (put 'git-status-mode 'mode-class 'special) | |
924 | ||
925 | (defun git-status-mode () | |
926 | "Major mode for interacting with Git. | |
927 | Commands: | |
928 | \\{git-status-mode-map}" | |
929 | (kill-all-local-variables) | |
930 | (buffer-disable-undo) | |
931 | (setq mode-name "git status" | |
932 | major-mode 'git-status-mode | |
933 | goal-column 17 | |
934 | buffer-read-only t) | |
935 | (use-local-map git-status-mode-map) | |
936 | (let ((buffer-read-only nil)) | |
937 | (erase-buffer) | |
938 | (let ((status (ewoc-create 'git-fileinfo-prettyprint "" ""))) | |
939 | (set (make-local-variable 'git-status) status)) | |
940 | (run-hooks 'git-status-mode-hook))) | |
941 | ||
942 | (defun git-status (dir) | |
943 | "Entry point into git-status mode." | |
944 | (interactive "DSelect directory: ") | |
945 | (setq dir (git-get-top-dir dir)) | |
946 | (if (file-directory-p (concat (file-name-as-directory dir) ".git")) | |
947 | (let ((buffer (create-file-buffer (expand-file-name "*git-status*" dir)))) | |
948 | (switch-to-buffer buffer) | |
949 | (git-status-mode) | |
950 | (cd dir) | |
951 | (git-refresh-status) | |
952 | (goto-char (point-min))) | |
953 | (message "%s is not a git working tree." dir))) | |
954 | ||
955 | (provide 'git) | |
956 | ;;; git.el ends here |