+++ /dev/null
-;;; vc-git.el --- VC backend for the git version control system
-
-;; Copyright (C) 2006 Alexandre Julliard
-
-;; This program is free software; you can redistribute it and/or
-;; modify it under the terms of the GNU General Public License as
-;; published by the Free Software Foundation; either version 2 of
-;; the License, or (at your option) any later version.
-;;
-;; This program is distributed in the hope that it will be
-;; useful, but WITHOUT ANY WARRANTY; without even the implied
-;; warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
-;; PURPOSE. See the GNU General Public License for more details.
-;;
-;; You should have received a copy of the GNU General Public
-;; License along with this program; if not, write to the Free
-;; Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
-;; MA 02111-1307 USA
-
-;;; Commentary:
-
-;; This file contains a VC backend for the git version control
-;; system.
-;;
-;; To install: put this file on the load-path and add GIT to the list
-;; of supported backends in `vc-handled-backends'; the following line,
-;; placed in your ~/.emacs, will accomplish this:
-;;
-;; (add-to-list 'vc-handled-backends 'GIT)
-;;
-;; TODO
-;; - changelog generation
-;; - working with revisions other than HEAD
-;;
-
-(eval-when-compile (require 'cl))
-
-(defvar git-commits-coding-system 'utf-8
- "Default coding system for git commits.")
-
-(defun vc-git--run-command-string (file &rest args)
- "Run a git command on FILE and return its output as string."
- (let* ((ok t)
- (str (with-output-to-string
- (with-current-buffer standard-output
- (unless (eq 0 (apply #'call-process "git" nil '(t nil) nil
- (append args (list (file-relative-name file)))))
- (setq ok nil))))))
- (and ok str)))
-
-(defun vc-git--run-command (file &rest args)
- "Run a git command on FILE, discarding any output."
- (let ((name (file-relative-name file)))
- (eq 0 (apply #'call-process "git" nil (get-buffer "*Messages") nil (append args (list name))))))
-
-(defun vc-git-registered (file)
- "Check whether FILE is registered with git."
- (with-temp-buffer
- (let* ((dir (file-name-directory file))
- (name (file-relative-name file dir)))
- (and (ignore-errors
- (when dir (cd dir))
- (eq 0 (call-process "git" nil '(t nil) nil "ls-files" "-c" "-z" "--" name)))
- (let ((str (buffer-string)))
- (and (> (length str) (length name))
- (string= (substring str 0 (1+ (length name))) (concat name "\0"))))))))
-
-(defun vc-git-state (file)
- "git-specific version of `vc-state'."
- (let ((diff (vc-git--run-command-string file "diff-index" "-z" "HEAD" "--")))
- (if (and diff (string-match ":[0-7]\\{6\\} [0-7]\\{6\\} [0-9a-f]\\{40\\} [0-9a-f]\\{40\\} [ADMU]\0[^\0]+\0" diff))
- 'edited
- 'up-to-date)))
-
-(defun vc-git-workfile-version (file)
- "git-specific version of `vc-workfile-version'."
- (let ((str (with-output-to-string
- (with-current-buffer standard-output
- (call-process "git" nil '(t nil) nil "symbolic-ref" "HEAD")))))
- (if (string-match "^\\(refs/heads/\\)?\\(.+\\)$" str)
- (match-string 2 str)
- str)))
-
-(defun vc-git-symbolic-commit (commit)
- "Translate COMMIT string into symbolic form.
-Returns nil if not possible."
- (and commit
- (with-temp-buffer
- (and
- (zerop
- (call-process "git" nil '(t nil) nil "name-rev"
- "--name-only" "--tags"
- commit))
- (goto-char (point-min))
- (= (forward-line 2) 1)
- (bolp)
- (buffer-substring-no-properties (point-min) (1- (point-max)))))))
-
-(defun vc-git-previous-version (file rev)
- "git-specific version of `vc-previous-version'."
- (let ((default-directory (file-name-directory (expand-file-name file)))
- (file (file-name-nondirectory file)))
- (vc-git-symbolic-commit
- (with-temp-buffer
- (and
- (zerop
- (call-process "git" nil '(t nil) nil "rev-list"
- "-2" rev "--" file))
- (goto-char (point-max))
- (bolp)
- (zerop (forward-line -1))
- (not (bobp))
- (buffer-substring-no-properties
- (point)
- (1- (point-max))))))))
-
-(defun vc-git-next-version (file rev)
- "git-specific version of `vc-next-version'."
- (let* ((default-directory (file-name-directory
- (expand-file-name file)))
- (file (file-name-nondirectory file))
- (current-rev
- (with-temp-buffer
- (and
- (zerop
- (call-process "git" nil '(t nil) nil "rev-list"
- "-1" rev "--" file))
- (goto-char (point-max))
- (bolp)
- (zerop (forward-line -1))
- (bobp)
- (buffer-substring-no-properties
- (point)
- (1- (point-max)))))))
- (and current-rev
- (vc-git-symbolic-commit
- (with-temp-buffer
- (and
- (zerop
- (call-process "git" nil '(t nil) nil "rev-list"
- "HEAD" "--" file))
- (goto-char (point-min))
- (search-forward current-rev nil t)
- (zerop (forward-line -1))
- (buffer-substring-no-properties
- (point)
- (progn (forward-line 1) (1- (point))))))))))
-
-(defun vc-git-revert (file &optional contents-done)
- "Revert FILE to the version stored in the git repository."
- (if contents-done
- (vc-git--run-command file "update-index" "--")
- (vc-git--run-command file "checkout" "HEAD")))
-
-(defun vc-git-checkout-model (file)
- 'implicit)
-
-(defun vc-git-workfile-unchanged-p (file)
- (let ((sha1 (vc-git--run-command-string file "hash-object" "--"))
- (head (vc-git--run-command-string file "ls-tree" "-z" "HEAD" "--")))
- (and head
- (string-match "[0-7]\\{6\\} blob \\([0-9a-f]\\{40\\}\\)\t[^\0]+\0" head)
- (string= (car (split-string sha1 "\n")) (match-string 1 head)))))
-
-(defun vc-git-register (file &optional rev comment)
- "Register FILE into the git version-control system."
- (vc-git--run-command file "update-index" "--add" "--"))
-
-(defun vc-git-print-log (file &optional buffer)
- (let ((name (file-relative-name file))
- (coding-system-for-read git-commits-coding-system))
- (vc-do-command buffer 'async "git" name "rev-list" "--pretty" "HEAD" "--")))
-
-(defun vc-git-diff (file &optional rev1 rev2 buffer)
- (let ((name (file-relative-name file))
- (buf (or buffer "*vc-diff*")))
- (if (and rev1 rev2)
- (vc-do-command buf 0 "git" name "diff-tree" "-p" rev1 rev2 "--")
- (vc-do-command buf 0 "git" name "diff-index" "-p" (or rev1 "HEAD") "--"))
- ; git-diff-index doesn't set exit status like diff does
- (if (vc-git-workfile-unchanged-p file) 0 1)))
-
-(defun vc-git-checkin (file rev comment)
- (let ((coding-system-for-write git-commits-coding-system))
- (vc-git--run-command file "commit" "-m" comment "--only" "--")))
-
-(defun vc-git-checkout (file &optional editable rev destfile)
- (if destfile
- (let ((fullname (substring
- (vc-git--run-command-string file "ls-files" "-z" "--full-name" "--")
- 0 -1))
- (coding-system-for-read 'no-conversion)
- (coding-system-for-write 'no-conversion))
- (with-temp-file destfile
- (eq 0 (call-process "git" nil t nil "cat-file" "blob"
- (concat (or rev "HEAD") ":" fullname)))))
- (vc-git--run-command file "checkout" (or rev "HEAD"))))
-
-(defun vc-git-annotate-command (file buf &optional rev)
- ; FIXME: rev is ignored
- (let ((name (file-relative-name file)))
- (call-process "git" nil buf nil "blame" name)))
-
-(defun vc-git-annotate-time ()
- (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)
- (vc-annotate-convert-time
- (apply #'encode-time (mapcar (lambda (match) (string-to-number (match-string match))) '(6 5 4 3 2 1 7))))))
-
-;; Not really useful since we can't do anything with the revision yet
-;;(defun vc-annotate-extract-revision-at-line ()
-;; (save-excursion
-;; (move-beginning-of-line 1)
-;; (and (looking-at "[0-9a-f]+")
-;; (buffer-substring (match-beginning 0) (match-end 0)))))
-
-(provide 'vc-git)
projects / git.git / commitdiff