1 ;;; git.el --- A user interface for git
3 ;; Copyright (C) 2005, 2006 Alexandre Julliard <julliard@winehq.org>
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.
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.
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,
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.
29 ;; To install: put this file on the load-path and place the following
30 ;; in your .emacs file:
34 ;; To start: `M-x git-status'
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
44 ;; - switching branches
46 ;; - git-show-branch browser
50 (eval-when-compile (require 'cl))
56 ;;;; ------------------------------------------------------------
59 "A user interface for the git versioning system."
62 (defcustom git-committer-name nil
63 "User name to use for commits.
64 The default is to fall back to the repository config,
65 then to `add-log-full-name' and then to `user-full-name'."
67 :type '(choice (const :tag "Default" nil)
68 (string :tag "Name")))
70 (defcustom git-committer-email nil
71 "Email address to use for commits.
72 The default is to fall back to the git repository config,
73 then to `add-log-mailing-address' and then to `user-mail-address'."
75 :type '(choice (const :tag "Default" nil)
76 (string :tag "Email")))
78 (defcustom git-commits-coding-system 'utf-8
79 "Default coding system for the log message of git commits."
83 (defcustom git-append-signed-off-by nil
84 "Whether to append a Signed-off-by line to the commit message before editing."
88 (defcustom git-reuse-status-buffer t
89 "Whether `git-status' should try to reuse an existing buffer
90 if there is already one that displays the same directory."
94 (defcustom git-per-dir-ignore-file ".gitignore"
95 "Name of the per-directory ignore file."
100 (defface git-status-face
101 '((((class color) (background light)) (:foreground "purple")))
102 "Git mode face used to highlight added and modified files."
105 (defface git-unmerged-face
106 '((((class color) (background light)) (:foreground "red" :bold t)))
107 "Git mode face used to highlight unmerged files."
110 (defface git-unknown-face
111 '((((class color) (background light)) (:foreground "goldenrod" :bold t)))
112 "Git mode face used to highlight unknown files."
115 (defface git-uptodate-face
116 '((((class color) (background light)) (:foreground "grey60")))
117 "Git mode face used to highlight up-to-date files."
120 (defface git-ignored-face
121 '((((class color) (background light)) (:foreground "grey60")))
122 "Git mode face used to highlight ignored files."
125 (defface git-mark-face
126 '((((class color) (background light)) (:foreground "red" :bold t)))
127 "Git mode face used for the file marks."
130 (defface git-header-face
131 '((((class color) (background light)) (:foreground "blue")))
132 "Git mode face used for commit headers."
135 (defface git-separator-face
136 '((((class color) (background light)) (:foreground "brown")))
137 "Git mode face used for commit separator."
140 (defface git-permission-face
141 '((((class color) (background light)) (:foreground "green" :bold t)))
142 "Git mode face used for permission changes."
147 ;;;; ------------------------------------------------------------
149 (defconst git-log-msg-separator "--- log message follows this line ---")
151 (defvar git-log-edit-font-lock-keywords
152 `(("^\\(Author:\\|Date:\\|Parent:\\|Signed-off-by:\\)\\(.*\\)$"
153 (1 font-lock-keyword-face)
154 (2 font-lock-function-name-face))
155 (,(concat "^\\(" (regexp-quote git-log-msg-separator) "\\)$")
156 (1 font-lock-comment-face))))
158 (defun git-get-env-strings (env)
159 "Build a list of NAME=VALUE strings from a list of environment strings."
160 (mapcar (lambda (entry) (concat (car entry) "=" (cdr entry))) env))
162 (defun git-call-process-env (buffer env &rest args)
163 "Wrapper for call-process that sets environment strings."
165 (apply #'call-process "env" nil buffer nil
166 (append (git-get-env-strings env) (list "git") args))
167 (apply #'call-process "git" nil buffer nil args)))
169 (defun git-call-process-env-string (env &rest args)
170 "Wrapper for call-process that sets environment strings,
171 and returns the process output as a string."
173 (and (eq 0 (apply #' git-call-process-env t env args))
176 (defun git-run-process-region (buffer start end program args)
177 "Run a git process with a buffer region as input."
178 (let ((output-buffer (current-buffer))
179 (dir default-directory))
180 (with-current-buffer buffer
182 (apply #'call-process-region start end program
183 nil (list output-buffer nil) nil args))))
185 (defun git-run-command-buffer (buffer-name &rest args)
186 "Run a git command, sending the output to a buffer named BUFFER-NAME."
187 (let ((dir default-directory)
188 (buffer (get-buffer-create buffer-name)))
189 (message "Running git %s..." (car args))
190 (with-current-buffer buffer
191 (let ((default-directory dir)
192 (buffer-read-only nil))
194 (apply #'git-call-process-env buffer nil args)))
195 (message "Running git %s...done" (car args))
198 (defun git-run-command (buffer env &rest args)
199 (message "Running git %s..." (car args))
200 (apply #'git-call-process-env buffer env args)
201 (message "Running git %s...done" (car args)))
203 (defun git-run-command-region (buffer start end env &rest args)
204 "Run a git command with specified buffer region as input."
205 (message "Running git %s..." (car args))
206 (unless (eq 0 (if env
207 (git-run-process-region
208 buffer start end "env"
209 (append (git-get-env-strings env) (list "git") args))
210 (git-run-process-region
211 buffer start end "git" args)))
212 (error "Failed to run \"git %s\":\n%s" (mapconcat (lambda (x) x) args " ") (buffer-string)))
213 (message "Running git %s...done" (car args)))
215 (defun git-get-string-sha1 (string)
216 "Read a SHA1 from the specified string."
218 (string-match "[0-9a-f]\\{40\\}" string)
219 (match-string 0 string)))
221 (defun git-get-committer-name ()
222 "Return the name to use as GIT_COMMITTER_NAME."
223 ; copied from log-edit
224 (or git-committer-name
225 (git-repo-config "user.name")
226 (and (boundp 'add-log-full-name) add-log-full-name)
227 (and (fboundp 'user-full-name) (user-full-name))
228 (and (boundp 'user-full-name) user-full-name)))
230 (defun git-get-committer-email ()
231 "Return the email address to use as GIT_COMMITTER_EMAIL."
232 ; copied from log-edit
233 (or git-committer-email
234 (git-repo-config "user.email")
235 (and (boundp 'add-log-mailing-address) add-log-mailing-address)
236 (and (fboundp 'user-mail-address) (user-mail-address))
237 (and (boundp 'user-mail-address) user-mail-address)))
239 (defun git-escape-file-name (name)
240 "Escape a file name if necessary."
241 (if (string-match "[\n\t\"\\]" name)
243 (mapconcat (lambda (c)
249 (t (char-to-string c))))
254 (defun git-get-top-dir (dir)
255 "Retrieve the top-level directory of a git tree."
256 (let ((cdup (with-output-to-string
257 (with-current-buffer standard-output
259 (unless (eq 0 (call-process "git" nil t nil "rev-parse" "--show-cdup"))
260 (error "cannot find top-level git tree for %s." dir))))))
261 (expand-file-name (concat (file-name-as-directory dir)
262 (car (split-string cdup "\n"))))))
265 (defun git-append-to-ignore (file)
266 "Add a file name to the ignore file in its directory."
267 (let* ((fullname (expand-file-name file))
268 (dir (file-name-directory fullname))
269 (name (file-name-nondirectory fullname))
270 (ignore-name (expand-file-name git-per-dir-ignore-file dir))
271 (created (not (file-exists-p ignore-name))))
272 (save-window-excursion
273 (set-buffer (find-file-noselect ignore-name))
274 (goto-char (point-max))
275 (unless (zerop (current-column)) (insert "\n"))
276 (insert "/" name "\n")
277 (sort-lines nil (point-min) (point-max))
280 (git-run-command nil nil "update-index" "--info-only" "--add" "--" (file-relative-name ignore-name)))
281 (git-add-status-file (if created 'added 'modified) (file-relative-name ignore-name))))
284 ;;;; Wrappers for basic git commands
285 ;;;; ------------------------------------------------------------
287 (defun git-rev-parse (rev)
288 "Parse a revision name and return its SHA1."
290 (git-call-process-env-string nil "rev-parse" rev)))
292 (defun git-repo-config (key)
293 "Retrieve the value associated to KEY in the git repository config file."
294 (let ((str (git-call-process-env-string nil "repo-config" key)))
295 (and str (car (split-string str "\n")))))
297 (defun git-symbolic-ref (ref)
298 "Wrapper for the git-symbolic-ref command."
299 (let ((str (git-call-process-env-string nil "symbolic-ref" ref)))
300 (and str (car (split-string str "\n")))))
302 (defun git-update-ref (ref val &optional oldval)
303 "Update a reference by calling git-update-ref."
304 (apply #'git-call-process-env nil nil "update-ref" ref val (if oldval (list oldval))))
306 (defun git-read-tree (tree &optional index-file)
307 "Read a tree into the index file."
308 (apply #'git-call-process-env nil
309 (if index-file `(("GIT_INDEX_FILE" . ,index-file)) nil)
310 "read-tree" (if tree (list tree))))
312 (defun git-write-tree (&optional index-file)
313 "Call git-write-tree and return the resulting tree SHA1 as a string."
315 (git-call-process-env-string (and index-file `(("GIT_INDEX_FILE" . ,index-file))) "write-tree")))
317 (defun git-commit-tree (buffer tree head)
318 "Call git-commit-tree with buffer as input and return the resulting commit SHA1."
319 (let ((author-name (git-get-committer-name))
320 (author-email (git-get-committer-email))
321 author-date log-start log-end args)
325 (with-current-buffer buffer
326 (goto-char (point-min))
328 (setq log-start (re-search-forward (concat "^" (regexp-quote git-log-msg-separator) "\n") nil t))
330 (narrow-to-region (point-min) log-start)
331 (goto-char (point-min))
332 (when (re-search-forward "^Author: +\\(.*?\\) *<\\(.*\\)> *$" nil t)
333 (setq author-name (match-string 1)
334 author-email (match-string 2)))
335 (goto-char (point-min))
336 (when (re-search-forward "^Date: +\\(.*\\)$" nil t)
337 (setq author-date (match-string 1)))
338 (goto-char (point-min))
339 (while (re-search-forward "^Parent: +\\([0-9a-f]+\\)" nil t)
340 (unless (string-equal head (match-string 1))
342 (push (match-string 1) args))))
343 (setq log-start (point-min)))
344 (setq log-end (point-max)))
346 (with-output-to-string
347 (with-current-buffer standard-output
348 (let ((coding-system-for-write git-commits-coding-system)
349 (env `(("GIT_AUTHOR_NAME" . ,author-name)
350 ("GIT_AUTHOR_EMAIL" . ,author-email)
351 ("GIT_COMMITTER_NAME" . ,(git-get-committer-name))
352 ("GIT_COMMITTER_EMAIL" . ,(git-get-committer-email)))))
353 (when author-date (push `("GIT_AUTHOR_DATE" . ,author-date) env))
354 (apply #'git-run-command-region
355 buffer log-start log-end env
356 "commit-tree" tree (nreverse args))))))))
358 (defun git-empty-db-p ()
359 "Check if the git db is empty (no commit done yet)."
360 (not (eq 0 (call-process "git" nil nil nil "rev-parse" "--verify" "HEAD"))))
362 (defun git-get-merge-heads ()
363 "Retrieve the merge heads from the MERGE_HEAD file if present."
365 (when (file-readable-p ".git/MERGE_HEAD")
367 (insert-file-contents ".git/MERGE_HEAD" nil nil nil t)
368 (goto-char (point-min))
369 (while (re-search-forward "[0-9a-f]\\{40\\}" nil t)
370 (push (match-string 0) heads))))
373 ;;;; File info structure
374 ;;;; ------------------------------------------------------------
376 ; fileinfo structure stolen from pcl-cvs
377 (defstruct (git-fileinfo
379 (:constructor git-create-fileinfo (state name &optional old-perm new-perm rename-state orig-name marked))
380 (:conc-name git-fileinfo->))
382 state ;; current state
384 old-perm new-perm ;; permission flags
385 rename-state ;; rename or copy state
386 orig-name ;; original name for renames or copies
387 needs-refresh) ;; whether file needs to be refreshed
389 (defvar git-status nil)
391 (defun git-clear-status (status)
392 "Remove everything from the status list."
393 (ewoc-filter status (lambda (info) nil)))
395 (defun git-set-files-state (files state)
396 "Set the state of a list of files."
398 (unless (eq (git-fileinfo->state info) state)
399 (setf (git-fileinfo->state info) state)
400 (setf (git-fileinfo->rename-state info) nil)
401 (setf (git-fileinfo->orig-name info) nil)
402 (setf (git-fileinfo->needs-refresh info) t))))
404 (defun git-state-code (code)
405 "Convert from a string to a added/deleted/modified state."
406 (case (string-to-char code)
414 (defun git-status-code-as-string (code)
415 "Format a git status code as string."
417 ('modified (propertize "Modified" 'face 'git-status-face))
418 ('unknown (propertize "Unknown " 'face 'git-unknown-face))
419 ('added (propertize "Added " 'face 'git-status-face))
420 ('deleted (propertize "Deleted " 'face 'git-status-face))
421 ('unmerged (propertize "Unmerged" 'face 'git-unmerged-face))
422 ('uptodate (propertize "Uptodate" 'face 'git-uptodate-face))
423 ('ignored (propertize "Ignored " 'face 'git-ignored-face))
426 (defun git-rename-as-string (info)
427 "Return a string describing the copy or rename associated with INFO, or an empty string if none."
428 (let ((state (git-fileinfo->rename-state info)))
432 (if (eq state 'copy) "copied from "
433 (if (eq (git-fileinfo->state info) 'added) "renamed from "
435 (git-escape-file-name (git-fileinfo->orig-name info))
436 ")") 'face 'git-status-face)
439 (defun git-permissions-as-string (old-perm new-perm)
440 "Format a permission change as string."
442 (if (or (not old-perm)
444 (eq 0 (logand ?\111 (logxor old-perm new-perm))))
446 (if (eq 0 (logand ?\111 old-perm)) "+x" "-x"))
447 'face 'git-permission-face))
449 (defun git-fileinfo-prettyprint (info)
450 "Pretty-printer for the git-fileinfo structure."
451 (insert (format " %s %s %s %s%s"
452 (if (git-fileinfo->marked info) (propertize "*" 'face 'git-mark-face) " ")
453 (git-status-code-as-string (git-fileinfo->state info))
454 (git-permissions-as-string (git-fileinfo->old-perm info) (git-fileinfo->new-perm info))
455 (git-escape-file-name (git-fileinfo->name info))
456 (git-rename-as-string info))))
458 (defun git-parse-status (status)
459 "Parse the output of git-diff-index in the current buffer."
460 (goto-char (point-min))
461 (while (re-search-forward
462 ":\\([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"
464 (let ((old-perm (string-to-number (match-string 1) 8))
465 (new-perm (string-to-number (match-string 2) 8))
466 (state (or (match-string 4) (match-string 6)))
467 (name (or (match-string 5) (match-string 7)))
468 (new-name (match-string 8)))
469 (if new-name ; copy or rename
470 (if (eq ?C (string-to-char state))
471 (ewoc-enter-last status (git-create-fileinfo 'added new-name old-perm new-perm 'copy name))
472 (ewoc-enter-last status (git-create-fileinfo 'deleted name 0 0 'rename new-name))
473 (ewoc-enter-last status (git-create-fileinfo 'added new-name old-perm new-perm 'rename name)))
474 (ewoc-enter-last status (git-create-fileinfo (git-state-code state) name old-perm new-perm))))))
476 (defun git-find-status-file (status file)
477 "Find a given file in the status ewoc and return its node."
478 (let ((node (ewoc-nth status 0)))
479 (while (and node (not (string= file (git-fileinfo->name (ewoc-data node)))))
480 (setq node (ewoc-next status node)))
483 (defun git-parse-ls-files (status default-state &optional skip-existing)
484 "Parse the output of git-ls-files in the current buffer."
485 (goto-char (point-min))
487 (while (re-search-forward "\\([HMRCK?]\\) \\([^\0]*\\)\0" nil t 1)
488 (let ((state (match-string 1))
489 (name (match-string 2)))
490 (unless (and skip-existing (git-find-status-file status name))
491 (push (git-create-fileinfo (or (git-state-code state) default-state) name) infolist))))
492 (dolist (info (nreverse infolist))
493 (ewoc-enter-last status info))))
495 (defun git-parse-ls-unmerged (status)
496 "Parse the output of git-ls-files -u in the current buffer."
497 (goto-char (point-min))
499 (while (re-search-forward "[0-7]\\{6\\} [0-9a-f]\\{40\\} [123]\t\\([^\0]+\\)\0" nil t)
500 (let ((node (git-find-status-file status (match-string 1))))
501 (when node (push (ewoc-data node) files))))
502 (git-set-files-state files 'unmerged)))
504 (defun git-add-status-file (state name)
505 "Add a new file to the status list (if not existing already) and return its node."
506 (unless git-status (error "Not in git-status buffer."))
507 (or (git-find-status-file git-status name)
508 (ewoc-enter-last git-status (git-create-fileinfo state name))))
510 (defun git-marked-files ()
511 "Return a list of all marked files, or if none a list containing just the file at cursor position."
512 (unless git-status (error "Not in git-status buffer."))
513 (or (ewoc-collect git-status (lambda (info) (git-fileinfo->marked info)))
514 (list (ewoc-data (ewoc-locate git-status)))))
516 (defun git-marked-files-state (&rest states)
517 "Return marked files that are in the specified states."
518 (let ((files (git-marked-files))
521 (when (memq (git-fileinfo->state info) states)
525 (defun git-refresh-files ()
526 "Refresh all files that need it and clear the needs-refresh flag."
527 (unless git-status (error "Not in git-status buffer."))
530 (let ((refresh (git-fileinfo->needs-refresh info)))
531 (setf (git-fileinfo->needs-refresh info) nil)
534 ; move back to goal column
535 (when goal-column (move-to-column goal-column)))
537 (defun git-refresh-ewoc-hf (status)
538 "Refresh the ewoc header and footer."
539 (let ((branch (git-symbolic-ref "HEAD"))
540 (head (if (git-empty-db-p) "Nothing committed yet"
541 (substring (git-rev-parse "HEAD") 0 10)))
542 (merge-heads (git-get-merge-heads)))
544 (format "Directory: %s\nBranch: %s\nHead: %s%s\n"
546 (if (string-match "^refs/heads/" branch)
547 (substring branch (match-end 0))
551 (concat "\nMerging: "
552 (mapconcat (lambda (str) (substring str 0 10)) merge-heads " "))
554 (if (ewoc-nth status 0) "" " No changes."))))
556 (defun git-get-filenames (files)
557 (mapcar (lambda (info) (git-fileinfo->name info)) files))
559 (defun git-update-index (index-file files)
560 "Run git-update-index on a list of files."
561 (let ((env (and index-file `(("GIT_INDEX_FILE" . ,index-file))))
562 added deleted modified)
564 (case (git-fileinfo->state info)
565 ('added (push info added))
566 ('deleted (push info deleted))
567 ('modified (push info modified))))
569 (apply #'git-run-command nil env "update-index" "--add" "--" (git-get-filenames added)))
571 (apply #'git-run-command nil env "update-index" "--remove" "--" (git-get-filenames deleted)))
573 (apply #'git-run-command nil env "update-index" "--" (git-get-filenames modified)))))
575 (defun git-do-commit ()
576 "Perform the actual commit using the current buffer as log message."
578 (let ((buffer (current-buffer))
579 (index-file (make-temp-file "gitidx")))
580 (with-current-buffer log-edit-parent-buffer
581 (if (git-marked-files-state 'unmerged)
582 (message "You cannot commit unmerged files, resolve them first.")
584 (let ((files (git-marked-files-state 'added 'deleted 'modified))
586 (unless (git-empty-db-p)
587 (setq head (git-rev-parse "HEAD")
588 head-tree (git-rev-parse "HEAD^{tree}")))
591 (git-read-tree head-tree index-file)
592 (git-update-index nil files) ;update both the default index
593 (git-update-index index-file files) ;and the temporary one
594 (let ((tree (git-write-tree index-file)))
595 (if (or (not (string-equal tree head-tree))
596 (yes-or-no-p "The tree was not modified, do you really want to perform an empty commit? "))
597 (let ((commit (git-commit-tree buffer tree head)))
598 (git-update-ref "HEAD" commit head)
599 (condition-case nil (delete-file ".git/MERGE_HEAD") (error nil))
600 (condition-case nil (delete-file ".git/MERGE_MSG") (error nil))
601 (with-current-buffer buffer (erase-buffer))
602 (git-set-files-state files 'uptodate)
603 (when (file-directory-p ".git/rr-cache")
604 (git-run-command nil nil "rerere"))
606 (git-refresh-ewoc-hf git-status)
607 (message "Committed %s." commit))
608 (message "Commit aborted."))))
609 (message "No files to commit.")))
610 (delete-file index-file))))))
613 ;;;; Interactive functions
614 ;;;; ------------------------------------------------------------
616 (defun git-mark-file ()
617 "Mark the file that the cursor is on and move to the next one."
619 (unless git-status (error "Not in git-status buffer."))
620 (let* ((pos (ewoc-locate git-status))
621 (info (ewoc-data pos)))
622 (setf (git-fileinfo->marked info) t)
623 (ewoc-invalidate git-status pos)
624 (ewoc-goto-next git-status 1)))
626 (defun git-unmark-file ()
627 "Unmark the file that the cursor is on and move to the next one."
629 (unless git-status (error "Not in git-status buffer."))
630 (let* ((pos (ewoc-locate git-status))
631 (info (ewoc-data pos)))
632 (setf (git-fileinfo->marked info) nil)
633 (ewoc-invalidate git-status pos)
634 (ewoc-goto-next git-status 1)))
636 (defun git-unmark-file-up ()
637 "Unmark the file that the cursor is on and move to the previous one."
639 (unless git-status (error "Not in git-status buffer."))
640 (let* ((pos (ewoc-locate git-status))
641 (info (ewoc-data pos)))
642 (setf (git-fileinfo->marked info) nil)
643 (ewoc-invalidate git-status pos)
644 (ewoc-goto-prev git-status 1)))
646 (defun git-mark-all ()
649 (unless git-status (error "Not in git-status buffer."))
650 (ewoc-map (lambda (info) (setf (git-fileinfo->marked info) t) t) git-status)
651 ; move back to goal column after invalidate
652 (when goal-column (move-to-column goal-column)))
654 (defun git-unmark-all ()
657 (unless git-status (error "Not in git-status buffer."))
658 (ewoc-map (lambda (info) (setf (git-fileinfo->marked info) nil) t) git-status)
659 ; move back to goal column after invalidate
660 (when goal-column (move-to-column goal-column)))
662 (defun git-toggle-all-marks ()
663 "Toggle all file marks."
665 (unless git-status (error "Not in git-status buffer."))
666 (ewoc-map (lambda (info) (setf (git-fileinfo->marked info) (not (git-fileinfo->marked info))) t) git-status)
667 ; move back to goal column after invalidate
668 (when goal-column (move-to-column goal-column)))
670 (defun git-next-file (&optional n)
671 "Move the selection down N files."
673 (unless git-status (error "Not in git-status buffer."))
674 (ewoc-goto-next git-status n))
676 (defun git-prev-file (&optional n)
677 "Move the selection up N files."
679 (unless git-status (error "Not in git-status buffer."))
680 (ewoc-goto-prev git-status n))
682 (defun git-next-unmerged-file (&optional n)
683 "Move the selection down N unmerged files."
685 (unless git-status (error "Not in git-status buffer."))
686 (let* ((last (ewoc-locate git-status))
687 (node (ewoc-next git-status last)))
688 (while (and node (> n 0))
689 (when (eq 'unmerged (git-fileinfo->state (ewoc-data node)))
692 (setq node (ewoc-next git-status node)))
693 (ewoc-goto-node git-status last)))
695 (defun git-prev-unmerged-file (&optional n)
696 "Move the selection up N unmerged files."
698 (unless git-status (error "Not in git-status buffer."))
699 (let* ((last (ewoc-locate git-status))
700 (node (ewoc-prev git-status last)))
701 (while (and node (> n 0))
702 (when (eq 'unmerged (git-fileinfo->state (ewoc-data node)))
705 (setq node (ewoc-prev git-status node)))
706 (ewoc-goto-node git-status last)))
708 (defun git-add-file ()
709 "Add marked file(s) to the index cache."
711 (let ((files (git-marked-files-state 'unknown)))
714 (git-add-status-file 'added (file-relative-name
715 (read-file-name "File to add: " nil nil t))))
717 (apply #'git-run-command nil nil "update-index" "--info-only" "--add" "--" (git-get-filenames files))
718 (git-set-files-state files 'added)
719 (git-refresh-files)))
721 (defun git-ignore-file ()
722 "Add marked file(s) to the ignore list."
724 (let ((files (git-marked-files-state 'unknown)))
727 (git-add-status-file 'unknown (file-relative-name
728 (read-file-name "File to ignore: " nil nil t))))
730 (dolist (info files) (git-append-to-ignore (git-fileinfo->name info)))
731 (git-set-files-state files 'ignored)
732 (git-refresh-files)))
734 (defun git-remove-file ()
735 "Remove the marked file(s)."
737 (let ((files (git-marked-files-state 'added 'modified 'unknown 'uptodate)))
740 (git-add-status-file 'unknown (file-relative-name
741 (read-file-name "File to remove: " nil nil t))))
744 (format "Remove %d file%s? " (length files) (if (> (length files) 1) "s" "")))
747 (let ((name (git-fileinfo->name info)))
748 (when (file-exists-p name) (delete-file name))))
749 (apply #'git-run-command nil nil "update-index" "--info-only" "--remove" "--" (git-get-filenames files))
750 ; remove unknown files from the list, set the others to deleted
751 (ewoc-filter git-status
753 (not (and (memq info files) (eq (git-fileinfo->state info) 'unknown))))
755 (git-set-files-state files 'deleted)
757 (unless (ewoc-nth git-status 0) ; refresh header if list is empty
758 (git-refresh-ewoc-hf git-status)))
759 (message "Aborting"))))
761 (defun git-revert-file ()
762 "Revert changes to the marked file(s)."
764 (let ((files (git-marked-files))
768 (format "Revert %d file%s? " (length files) (if (> (length files) 1) "s" ""))))
770 (case (git-fileinfo->state info)
771 ('added (push info added))
772 ('deleted (push info modified))
773 ('unmerged (push info modified))
774 ('modified (push info modified))))
776 (apply #'git-run-command nil nil "update-index" "--force-remove" "--" (git-get-filenames added))
777 (git-set-files-state added 'unknown))
779 (apply #'git-run-command nil nil "checkout" "HEAD" (git-get-filenames modified))
780 (git-set-files-state modified 'uptodate))
781 (git-refresh-files))))
783 (defun git-resolve-file ()
784 "Resolve conflicts in marked file(s)."
786 (let ((files (git-marked-files-state 'unmerged)))
788 (apply #'git-run-command nil nil "update-index" "--" (git-get-filenames files))
789 (git-set-files-state files 'modified)
790 (git-refresh-files))))
792 (defun git-remove-handled ()
793 "Remove handled files from the status list."
795 (ewoc-filter git-status
797 (not (or (eq (git-fileinfo->state info) 'ignored)
798 (eq (git-fileinfo->state info) 'uptodate)))))
799 (unless (ewoc-nth git-status 0) ; refresh header if list is empty
800 (git-refresh-ewoc-hf git-status)))
802 (defun git-setup-diff-buffer (buffer)
803 "Setup a buffer for displaying a diff."
804 (with-current-buffer buffer
806 (goto-char (point-min))
807 (setq buffer-read-only t))
808 (display-buffer buffer)
809 (shrink-window-if-larger-than-buffer))
811 (defun git-diff-file ()
812 "Diff the marked file(s) against HEAD."
814 (let ((files (git-marked-files)))
815 (git-setup-diff-buffer
816 (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M" "HEAD" "--" (git-get-filenames files)))))
818 (defun git-diff-file-merge-head (arg)
819 "Diff the marked file(s) against the first merge head (or the nth one with a numeric prefix)."
821 (let ((files (git-marked-files))
822 (merge-heads (git-get-merge-heads)))
823 (unless merge-heads (error "No merge in progress"))
824 (git-setup-diff-buffer
825 (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M"
826 (or (nth (1- arg) merge-heads) "HEAD") "--" (git-get-filenames files)))))
828 (defun git-diff-unmerged-file (stage)
829 "Diff the marked unmerged file(s) against the specified stage."
830 (let ((files (git-marked-files)))
831 (git-setup-diff-buffer
832 (apply #'git-run-command-buffer "*git-diff*" "diff-files" "-p" stage "--" (git-get-filenames files)))))
834 (defun git-diff-file-base ()
835 "Diff the marked unmerged file(s) against the common base file."
837 (git-diff-unmerged-file "-1"))
839 (defun git-diff-file-mine ()
840 "Diff the marked unmerged file(s) against my pre-merge version."
842 (git-diff-unmerged-file "-2"))
844 (defun git-diff-file-other ()
845 "Diff the marked unmerged file(s) against the other's pre-merge version."
847 (git-diff-unmerged-file "-3"))
849 (defun git-diff-file-combined ()
850 "Do a combined diff of the marked unmerged file(s)."
852 (git-diff-unmerged-file "-c"))
854 (defun git-diff-file-idiff ()
855 "Perform an interactive diff on the current file."
857 (error "Interactive diffs not implemented yet."))
859 (defun git-log-file ()
860 "Display a log of changes to the marked file(s)."
862 (let* ((files (git-marked-files))
863 (coding-system-for-read git-commits-coding-system)
864 (buffer (apply #'git-run-command-buffer "*git-log*" "rev-list" "--pretty" "HEAD" "--" (git-get-filenames files))))
865 (with-current-buffer buffer
866 ; (git-log-mode) FIXME: implement log mode
867 (goto-char (point-min))
868 (setq buffer-read-only t))
869 (display-buffer buffer)))
871 (defun git-log-edit-files ()
872 "Return a list of marked files for use in the log-edit buffer."
873 (with-current-buffer log-edit-parent-buffer
874 (git-get-filenames (git-marked-files-state 'added 'deleted 'modified))))
876 (defun git-commit-file ()
877 "Commit the marked file(s), asking for a commit message."
879 (unless git-status (error "Not in git-status buffer."))
880 (let ((buffer (get-buffer-create "*git-commit*"))
881 (merge-heads (git-get-merge-heads))
882 (dir default-directory)
883 (sign-off git-append-signed-off-by))
884 (with-current-buffer buffer
885 (when (eq 0 (buffer-size))
890 (format "Author: %s <%s>\n%s"
891 (git-get-committer-name) (git-get-committer-email)
893 (format "Parent: %s\n%s\n"
894 (git-rev-parse "HEAD")
895 (mapconcat (lambda (str) (concat "Parent: " str)) merge-heads "\n"))
897 'face 'git-header-face)
898 (propertize git-log-msg-separator 'face 'git-separator-face)
900 (cond ((file-readable-p ".git/MERGE_MSG")
901 (insert-file-contents ".git/MERGE_MSG"))
903 (insert (format "\n\nSigned-off-by: %s <%s>\n"
904 (git-get-committer-name) (git-get-committer-email)))))))
905 (log-edit #'git-do-commit nil #'git-log-edit-files buffer)
906 (setq font-lock-keywords (font-lock-compile-keywords git-log-edit-font-lock-keywords))
907 (re-search-forward (regexp-quote (concat git-log-msg-separator "\n")) nil t)))
909 (defun git-find-file ()
910 "Visit the current file in its own buffer."
912 (unless git-status (error "Not in git-status buffer."))
913 (let ((info (ewoc-data (ewoc-locate git-status))))
914 (find-file (git-fileinfo->name info))
915 (when (eq 'unmerged (git-fileinfo->state info))
918 (defun git-find-file-other-window ()
919 "Visit the current file in its own buffer in another window."
921 (unless git-status (error "Not in git-status buffer."))
922 (let ((info (ewoc-data (ewoc-locate git-status))))
923 (find-file-other-window (git-fileinfo->name info))
924 (when (eq 'unmerged (git-fileinfo->state info))
927 (defun git-find-file-imerge ()
928 "Visit the current file in interactive merge mode."
930 (unless git-status (error "Not in git-status buffer."))
931 (let ((info (ewoc-data (ewoc-locate git-status))))
932 (find-file (git-fileinfo->name info))
935 (defun git-view-file ()
936 "View the current file in its own buffer."
938 (unless git-status (error "Not in git-status buffer."))
939 (let ((info (ewoc-data (ewoc-locate git-status))))
940 (view-file (git-fileinfo->name info))))
942 (defun git-refresh-status ()
943 "Refresh the git status buffer."
945 (let* ((status git-status)
946 (pos (ewoc-locate status))
947 (cur-name (and pos (git-fileinfo->name (ewoc-data pos)))))
948 (unless status (error "Not in git-status buffer."))
949 (git-clear-status status)
950 (git-run-command nil nil "update-index" "--info-only" "--refresh")
952 ; we need some special handling for an empty db
954 (git-run-command t nil "ls-files" "-z" "-t" "-c")
955 (git-parse-ls-files status 'added))
957 (git-run-command t nil "diff-index" "-z" "-M" "HEAD")
958 (git-parse-status status)))
960 (git-run-command t nil "ls-files" "-z" "-u")
961 (git-parse-ls-unmerged status))
962 (when (file-readable-p ".git/info/exclude")
964 (git-run-command t nil "ls-files" "-z" "-t" "-o"
965 "--exclude-from=.git/info/exclude"
966 (concat "--exclude-per-directory=" git-per-dir-ignore-file))
967 (git-parse-ls-files status 'unknown)))
969 (git-refresh-ewoc-hf status)
970 ; move point to the current file name if any
971 (let ((node (and cur-name (git-find-status-file status cur-name))))
972 (when node (ewoc-goto-node status node)))))
974 (defun git-status-quit ()
975 "Quit git-status mode."
980 ;;;; ------------------------------------------------------------
982 (defvar git-status-mode-hook nil
983 "Run after `git-status-mode' is setup.")
985 (defvar git-status-mode-map nil
986 "Keymap for git major mode.")
988 (defvar git-status nil
989 "List of all files managed by the git-status mode.")
991 (unless git-status-mode-map
992 (let ((map (make-keymap))
993 (diff-map (make-sparse-keymap)))
994 (suppress-keymap map)
995 (define-key map "?" 'git-help)
996 (define-key map "h" 'git-help)
997 (define-key map " " 'git-next-file)
998 (define-key map "a" 'git-add-file)
999 (define-key map "c" 'git-commit-file)
1000 (define-key map "d" diff-map)
1001 (define-key map "=" 'git-diff-file)
1002 (define-key map "f" 'git-find-file)
1003 (define-key map "\r" 'git-find-file)
1004 (define-key map "g" 'git-refresh-status)
1005 (define-key map "i" 'git-ignore-file)
1006 (define-key map "l" 'git-log-file)
1007 (define-key map "m" 'git-mark-file)
1008 (define-key map "M" 'git-mark-all)
1009 (define-key map "n" 'git-next-file)
1010 (define-key map "N" 'git-next-unmerged-file)
1011 (define-key map "o" 'git-find-file-other-window)
1012 (define-key map "p" 'git-prev-file)
1013 (define-key map "P" 'git-prev-unmerged-file)
1014 (define-key map "q" 'git-status-quit)
1015 (define-key map "r" 'git-remove-file)
1016 (define-key map "R" 'git-resolve-file)
1017 (define-key map "T" 'git-toggle-all-marks)
1018 (define-key map "u" 'git-unmark-file)
1019 (define-key map "U" 'git-revert-file)
1020 (define-key map "v" 'git-view-file)
1021 (define-key map "x" 'git-remove-handled)
1022 (define-key map "\C-?" 'git-unmark-file-up)
1023 (define-key map "\M-\C-?" 'git-unmark-all)
1025 (define-key diff-map "b" 'git-diff-file-base)
1026 (define-key diff-map "c" 'git-diff-file-combined)
1027 (define-key diff-map "=" 'git-diff-file)
1028 (define-key diff-map "e" 'git-diff-file-idiff)
1029 (define-key diff-map "E" 'git-find-file-imerge)
1030 (define-key diff-map "h" 'git-diff-file-merge-head)
1031 (define-key diff-map "m" 'git-diff-file-mine)
1032 (define-key diff-map "o" 'git-diff-file-other)
1033 (setq git-status-mode-map map)))
1035 ;; git mode should only run in the *git status* buffer
1036 (put 'git-status-mode 'mode-class 'special)
1038 (defun git-status-mode ()
1039 "Major mode for interacting with Git.
1041 \\{git-status-mode-map}"
1042 (kill-all-local-variables)
1043 (buffer-disable-undo)
1044 (setq mode-name "git status"
1045 major-mode 'git-status-mode
1048 (use-local-map git-status-mode-map)
1049 (let ((buffer-read-only nil))
1051 (let ((status (ewoc-create 'git-fileinfo-prettyprint "" "")))
1052 (set (make-local-variable 'git-status) status))
1053 (set (make-local-variable 'list-buffers-directory) default-directory)
1054 (run-hooks 'git-status-mode-hook)))
1056 (defun git-find-status-buffer (dir)
1057 "Find the git status buffer handling a specified directory."
1058 (let ((list (buffer-list))
1059 (fulldir (expand-file-name dir))
1061 (while (and list (not found))
1062 (let ((buffer (car list)))
1063 (with-current-buffer buffer
1064 (when (and list-buffers-directory
1065 (string-equal fulldir (expand-file-name list-buffers-directory))
1066 (string-match "\\*git-status\\*$" (buffer-name buffer)))
1067 (setq found buffer))))
1068 (setq list (cdr list)))
1071 (defun git-status (dir)
1072 "Entry point into git-status mode."
1073 (interactive "DSelect directory: ")
1074 (setq dir (git-get-top-dir dir))
1075 (if (file-directory-p (concat (file-name-as-directory dir) ".git"))
1076 (let ((buffer (or (and git-reuse-status-buffer (git-find-status-buffer dir))
1077 (create-file-buffer (expand-file-name "*git-status*" dir)))))
1078 (switch-to-buffer buffer)
1081 (git-refresh-status)
1082 (goto-char (point-min)))
1083 (message "%s is not a git working tree." dir)))
1086 "Display help for Git mode."
1088 (describe-function 'git-status-mode))
1091 ;;; git.el ends here