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git.el
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git.el
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;;; git.el --- A user interface for git
;; Copyright (C) 2005, 2006, 2007, 2008, 2009 Alexandre Julliard <julliard@winehq.org>
;; Version: 1.0
;; 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 an interface for the git version control
;; system. It provides easy access to the most frequently used git
;; commands. The user interface is as far as possible identical to
;; that of the PCL-CVS mode.
;;
;; To install: put this file on the load-path and place the following
;; in your .emacs file:
;;
;; (require 'git)
;;
;; To start: `M-x git-status'
;;
;; TODO
;; - diff against other branch
;; - renaming files from the status buffer
;; - creating tags
;; - fetch/pull
;; - revlist browser
;; - git-show-branch browser
;;
;;; Compatibility:
;;
;; This file works on GNU Emacs 21 or later. It may work on older
;; versions but this is not guaranteed.
;;
;; It may work on XEmacs 21, provided that you first install the ewoc
;; and log-edit packages.
;;
(eval-when-compile (require 'cl))
(require 'ewoc)
(require 'log-edit)
(require 'easymenu)
;;;; Customizations
;;;; ------------------------------------------------------------
(defgroup git nil
"A user interface for the git versioning system."
:group 'tools)
(defcustom git-committer-name nil
"User name to use for commits.
The default is to fall back to the repository config,
then to `add-log-full-name' and then to `user-full-name'."
:group 'git
:type '(choice (const :tag "Default" nil)
(string :tag "Name")))
(defcustom git-committer-email nil
"Email address to use for commits.
The default is to fall back to the git repository config,
then to `add-log-mailing-address' and then to `user-mail-address'."
:group 'git
:type '(choice (const :tag "Default" nil)
(string :tag "Email")))
(defcustom git-commits-coding-system nil
"Default coding system for the log message of git commits."
:group 'git
:type '(choice (const :tag "From repository config" nil)
(coding-system)))
(defcustom git-append-signed-off-by nil
"Whether to append a Signed-off-by line to the commit message before editing."
:group 'git
:type 'boolean)
(defcustom git-reuse-status-buffer t
"Whether `git-status' should try to reuse an existing buffer
if there is already one that displays the same directory."
:group 'git
:type 'boolean)
(defcustom git-per-dir-ignore-file ".gitignore"
"Name of the per-directory ignore file."
:group 'git
:type 'string)
(defcustom git-show-uptodate nil
"Whether to display up-to-date files."
:group 'git
:type 'boolean)
(defcustom git-show-ignored nil
"Whether to display ignored files."
:group 'git
:type 'boolean)
(defcustom git-show-unknown t
"Whether to display unknown files."
:group 'git
:type 'boolean)
(defface git-status-face
'((((class color) (background light)) (:foreground "purple"))
(((class color) (background dark)) (:foreground "salmon")))
"Git mode face used to highlight added and modified files."
:group 'git)
(defface git-unmerged-face
'((((class color) (background light)) (:foreground "red" :bold t))
(((class color) (background dark)) (:foreground "red" :bold t)))
"Git mode face used to highlight unmerged files."
:group 'git)
(defface git-unknown-face
'((((class color) (background light)) (:foreground "goldenrod" :bold t))
(((class color) (background dark)) (:foreground "goldenrod" :bold t)))
"Git mode face used to highlight unknown files."
:group 'git)
(defface git-uptodate-face
'((((class color) (background light)) (:foreground "grey60"))
(((class color) (background dark)) (:foreground "grey40")))
"Git mode face used to highlight up-to-date files."
:group 'git)
(defface git-ignored-face
'((((class color) (background light)) (:foreground "grey60"))
(((class color) (background dark)) (:foreground "grey40")))
"Git mode face used to highlight ignored files."
:group 'git)
(defface git-mark-face
'((((class color) (background light)) (:foreground "red" :bold t))
(((class color) (background dark)) (:foreground "tomato" :bold t)))
"Git mode face used for the file marks."
:group 'git)
(defface git-header-face
'((((class color) (background light)) (:foreground "blue"))
(((class color) (background dark)) (:foreground "blue")))
"Git mode face used for commit headers."
:group 'git)
(defface git-separator-face
'((((class color) (background light)) (:foreground "brown"))
(((class color) (background dark)) (:foreground "brown")))
"Git mode face used for commit separator."
:group 'git)
(defface git-permission-face
'((((class color) (background light)) (:foreground "green" :bold t))
(((class color) (background dark)) (:foreground "green" :bold t)))
"Git mode face used for permission changes."
:group 'git)
;;;; Utilities
;;;; ------------------------------------------------------------
(defconst git-log-msg-separator "--- log message follows this line ---")
(defvar git-log-edit-font-lock-keywords
`(("^\\(Author:\\|Date:\\|Merge:\\|Signed-off-by:\\)\\(.*\\)$"
(1 font-lock-keyword-face)
(2 font-lock-function-name-face))
(,(concat "^\\(" (regexp-quote git-log-msg-separator) "\\)$")
(1 font-lock-comment-face))))
(defun git-get-env-strings (env)
"Build a list of NAME=VALUE strings from a list of environment strings."
(mapcar (lambda (entry) (concat (car entry) "=" (cdr entry))) env))
(defun git-call-process (buffer &rest args)
"Wrapper for call-process that sets environment strings."
(apply #'call-process "git" nil buffer nil args))
(defun git-call-process-display-error (&rest args)
"Wrapper for call-process that displays error messages."
(let* ((dir default-directory)
(buffer (get-buffer-create "*Git Command Output*"))
(ok (with-current-buffer buffer
(let ((default-directory dir)
(buffer-read-only nil))
(erase-buffer)
(eq 0 (apply #'git-call-process (list buffer t) args))))))
(unless ok (display-message-or-buffer buffer))
ok))
(defun git-call-process-string (&rest args)
"Wrapper for call-process that returns the process output as a string,
or nil if the git command failed."
(with-temp-buffer
(and (eq 0 (apply #'git-call-process t args))
(buffer-string))))
(defun git-call-process-string-display-error (&rest args)
"Wrapper for call-process that displays error message and returns
the process output as a string, or nil if the git command failed."
(with-temp-buffer
(if (eq 0 (apply #'git-call-process (list t t) args))
(buffer-string)
(display-message-or-buffer (current-buffer))
nil)))
(defun git-run-process-region (buffer start end program args)
"Run a git process with a buffer region as input."
(let ((output-buffer (current-buffer))
(dir default-directory))
(with-current-buffer buffer
(cd dir)
(apply #'call-process-region start end program
nil (list output-buffer t) nil args))))
(defun git-run-command-buffer (buffer-name &rest args)
"Run a git command, sending the output to a buffer named BUFFER-NAME."
(let ((dir default-directory)
(buffer (get-buffer-create buffer-name)))
(message "Running git %s..." (car args))
(with-current-buffer buffer
(let ((default-directory dir)
(buffer-read-only nil))
(erase-buffer)
(apply #'git-call-process buffer args)))
(message "Running git %s...done" (car args))
buffer))
(defun git-run-command-region (buffer start end env &rest args)
"Run a git command with specified buffer region as input."
(with-temp-buffer
(if (eq 0 (if env
(git-run-process-region
buffer start end "env"
(append (git-get-env-strings env) (list "git") args))
(git-run-process-region buffer start end "git" args)))
(buffer-string)
(display-message-or-buffer (current-buffer))
nil)))
(defun git-run-hook (hook env &rest args)
"Run a git hook and display its output if any."
(let ((dir default-directory)
(hook-name (expand-file-name (concat ".git/hooks/" hook))))
(or (not (file-executable-p hook-name))
(let (status (buffer (get-buffer-create "*Git Hook Output*")))
(with-current-buffer buffer
(erase-buffer)
(cd dir)
(setq status
(if env
(apply #'call-process "env" nil (list buffer t) nil
(append (git-get-env-strings env) (list hook-name) args))
(apply #'call-process hook-name nil (list buffer t) nil args))))
(display-message-or-buffer buffer)
(eq 0 status)))))
(defun git-get-string-sha1 (string)
"Read a SHA1 from the specified string."
(and string
(string-match "[0-9a-f]\\{40\\}" string)
(match-string 0 string)))
(defun git-get-committer-name ()
"Return the name to use as GIT_COMMITTER_NAME."
; copied from log-edit
(or git-committer-name
(git-config "user.name")
(and (boundp 'add-log-full-name) add-log-full-name)
(and (fboundp 'user-full-name) (user-full-name))
(and (boundp 'user-full-name) user-full-name)))
(defun git-get-committer-email ()
"Return the email address to use as GIT_COMMITTER_EMAIL."
; copied from log-edit
(or git-committer-email
(git-config "user.email")
(and (boundp 'add-log-mailing-address) add-log-mailing-address)
(and (fboundp 'user-mail-address) (user-mail-address))
(and (boundp 'user-mail-address) user-mail-address)))
(defun git-get-commits-coding-system ()
"Return the coding system to use for commits."
(let ((repo-config (git-config "i18n.commitencoding")))
(or git-commits-coding-system
(and repo-config
(fboundp 'locale-charset-to-coding-system)
(locale-charset-to-coding-system repo-config))
'utf-8)))
(defun git-get-logoutput-coding-system ()
"Return the coding system used for git-log output."
(let ((repo-config (or (git-config "i18n.logoutputencoding")
(git-config "i18n.commitencoding"))))
(or git-commits-coding-system
(and repo-config
(fboundp 'locale-charset-to-coding-system)
(locale-charset-to-coding-system repo-config))
'utf-8)))
(defun git-escape-file-name (name)
"Escape a file name if necessary."
(if (string-match "[\n\t\"\\]" name)
(concat "\""
(mapconcat (lambda (c)
(case c
(?\n "\\n")
(?\t "\\t")
(?\\ "\\\\")
(?\" "\\\"")
(t (char-to-string c))))
name "")
"\"")
name))
(defun git-success-message (text files)
"Print a success message after having handled FILES."
(let ((n (length files)))
(if (equal n 1)
(message "%s %s" text (car files))
(message "%s %d files" text n))))
(defun git-get-top-dir (dir)
"Retrieve the top-level directory of a git tree."
(let ((cdup (with-output-to-string
(with-current-buffer standard-output
(cd dir)
(unless (eq 0 (git-call-process t "rev-parse" "--show-cdup"))
(error "cannot find top-level git tree for %s." dir))))))
(expand-file-name (concat (file-name-as-directory dir)
(car (split-string cdup "\n"))))))
;stolen from pcl-cvs
(defun git-append-to-ignore (file)
"Add a file name to the ignore file in its directory."
(let* ((fullname (expand-file-name file))
(dir (file-name-directory fullname))
(name (file-name-nondirectory fullname))
(ignore-name (expand-file-name git-per-dir-ignore-file dir))
(created (not (file-exists-p ignore-name))))
(save-window-excursion
(set-buffer (find-file-noselect ignore-name))
(goto-char (point-max))
(unless (zerop (current-column)) (insert "\n"))
(insert "/" name "\n")
(sort-lines nil (point-min) (point-max))
(save-buffer))
(when created
(git-call-process nil "update-index" "--add" "--" (file-relative-name ignore-name)))
(git-update-status-files (list (file-relative-name ignore-name)))))
; propertize definition for XEmacs, stolen from erc-compat
(eval-when-compile
(unless (fboundp 'propertize)
(defun propertize (string &rest props)
(let ((string (copy-sequence string)))
(while props
(put-text-property 0 (length string) (nth 0 props) (nth 1 props) string)
(setq props (cddr props)))
string))))
;;;; Wrappers for basic git commands
;;;; ------------------------------------------------------------
(defun git-rev-parse (rev)
"Parse a revision name and return its SHA1."
(git-get-string-sha1
(git-call-process-string "rev-parse" rev)))
(defun git-config (key)
"Retrieve the value associated to KEY in the git repository config file."
(let ((str (git-call-process-string "config" key)))
(and str (car (split-string str "\n")))))
(defun git-symbolic-ref (ref)
"Wrapper for the git-symbolic-ref command."
(let ((str (git-call-process-string "symbolic-ref" ref)))
(and str (car (split-string str "\n")))))
(defun git-update-ref (ref newval &optional oldval reason)
"Update a reference by calling git-update-ref."
(let ((args (and oldval (list oldval))))
(when newval (push newval args))
(push ref args)
(when reason
(push reason args)
(push "-m" args))
(unless newval (push "-d" args))
(apply 'git-call-process-display-error "update-ref" args)))
(defun git-for-each-ref (&rest specs)
"Return a list of refs using git-for-each-ref.
Each entry is a cons of (SHORT-NAME . FULL-NAME)."
(let (refs)
(with-temp-buffer
(apply #'git-call-process t "for-each-ref" "--format=%(refname)" specs)
(goto-char (point-min))
(while (re-search-forward "^[^/\n]+/[^/\n]+/\\(.+\\)$" nil t)
(push (cons (match-string 1) (match-string 0)) refs)))
(nreverse refs)))
(defun git-read-tree (tree &optional index-file)
"Read a tree into the index file."
(let ((process-environment
(append (and index-file (list (concat "GIT_INDEX_FILE=" index-file))) process-environment)))
(apply 'git-call-process-display-error "read-tree" (if tree (list tree)))))
(defun git-write-tree (&optional index-file)
"Call git-write-tree and return the resulting tree SHA1 as a string."
(let ((process-environment
(append (and index-file (list (concat "GIT_INDEX_FILE=" index-file))) process-environment)))
(git-get-string-sha1
(git-call-process-string-display-error "write-tree"))))
(defun git-commit-tree (buffer tree head)
"Call git-commit-tree with buffer as input and return the resulting commit SHA1."
(let ((author-name (git-get-committer-name))
(author-email (git-get-committer-email))
(subject "commit (initial): ")
author-date log-start log-end args coding-system-for-write)
(when head
(setq subject "commit: ")
(push "-p" args)
(push head args))
(with-current-buffer buffer
(goto-char (point-min))
(if
(setq log-start (re-search-forward (concat "^" (regexp-quote git-log-msg-separator) "\n") nil t))
(save-restriction
(narrow-to-region (point-min) log-start)
(goto-char (point-min))
(when (re-search-forward "^Author: +\\(.*?\\) *<\\(.*\\)> *$" nil t)
(setq author-name (match-string 1)
author-email (match-string 2)))
(goto-char (point-min))
(when (re-search-forward "^Date: +\\(.*\\)$" nil t)
(setq author-date (match-string 1)))
(goto-char (point-min))
(when (re-search-forward "^Merge: +\\(.*\\)" nil t)
(setq subject "commit (merge): ")
(dolist (parent (split-string (match-string 1) " +" t))
(push "-p" args)
(push parent args))))
(setq log-start (point-min)))
(setq log-end (point-max))
(goto-char log-start)
(when (re-search-forward ".*$" nil t)
(setq subject (concat subject (match-string 0))))
(setq coding-system-for-write buffer-file-coding-system))
(let ((commit
(git-get-string-sha1
(let ((env `(("GIT_AUTHOR_NAME" . ,author-name)
("GIT_AUTHOR_EMAIL" . ,author-email)
("GIT_COMMITTER_NAME" . ,(git-get-committer-name))
("GIT_COMMITTER_EMAIL" . ,(git-get-committer-email)))))
(when author-date (push `("GIT_AUTHOR_DATE" . ,author-date) env))
(apply #'git-run-command-region
buffer log-start log-end env
"commit-tree" tree (nreverse args))))))
(when commit (git-update-ref "HEAD" commit head subject))
commit)))
(defun git-empty-db-p ()
"Check if the git db is empty (no commit done yet)."
(not (eq 0 (git-call-process nil "rev-parse" "--verify" "HEAD"))))
(defun git-get-merge-heads ()
"Retrieve the merge heads from the MERGE_HEAD file if present."
(let (heads)
(when (file-readable-p ".git/MERGE_HEAD")
(with-temp-buffer
(insert-file-contents ".git/MERGE_HEAD" nil nil nil t)
(goto-char (point-min))
(while (re-search-forward "[0-9a-f]\\{40\\}" nil t)
(push (match-string 0) heads))))
(nreverse heads)))
(defun git-get-commit-description (commit)
"Get a one-line description of COMMIT."
(let ((coding-system-for-read (git-get-logoutput-coding-system)))
(let ((descr (git-call-process-string "log" "--max-count=1" "--pretty=oneline" commit)))
(if (and descr (string-match "\\`\\([0-9a-f]\\{40\\}\\) *\\(.*\\)$" descr))
(concat (substring (match-string 1 descr) 0 10) " - " (match-string 2 descr))
descr))))
;;;; File info structure
;;;; ------------------------------------------------------------
; fileinfo structure stolen from pcl-cvs
(defstruct (git-fileinfo
(:copier nil)
(:constructor git-create-fileinfo (state name &optional old-perm new-perm rename-state orig-name marked))
(:conc-name git-fileinfo->))
marked ;; t/nil
state ;; current state
name ;; file name
old-perm new-perm ;; permission flags
rename-state ;; rename or copy state
orig-name ;; original name for renames or copies
needs-update ;; whether file needs to be updated
needs-refresh) ;; whether file needs to be refreshed
(defvar git-status nil)
(defun git-set-fileinfo-state (info state)
"Set the state of a file info."
(unless (eq (git-fileinfo->state info) state)
(setf (git-fileinfo->state info) state
(git-fileinfo->new-perm info) (git-fileinfo->old-perm info)
(git-fileinfo->rename-state info) nil
(git-fileinfo->orig-name info) nil
(git-fileinfo->needs-update info) nil
(git-fileinfo->needs-refresh info) t)))
(defun git-status-filenames-map (status func files &rest args)
"Apply FUNC to the status files names in the FILES list.
The list must be sorted."
(when files
(let ((file (pop files))
(node (ewoc-nth status 0)))
(while (and file node)
(let* ((info (ewoc-data node))
(name (git-fileinfo->name info)))
(if (string-lessp name file)
(setq node (ewoc-next status node))
(if (string-equal name file)
(apply func info args))
(setq file (pop files))))))))
(defun git-set-filenames-state (status files state)
"Set the state of a list of named files. The list must be sorted"
(when files
(git-status-filenames-map status #'git-set-fileinfo-state files state)
(unless state ;; delete files whose state has been set to nil
(ewoc-filter status (lambda (info) (git-fileinfo->state info))))))
(defun git-state-code (code)
"Convert from a string to a added/deleted/modified state."
(case (string-to-char code)
(?M 'modified)
(?? 'unknown)
(?A 'added)
(?D 'deleted)
(?U 'unmerged)
(?T 'modified)
(t nil)))
(defun git-status-code-as-string (code)
"Format a git status code as string."
(case code
('modified (propertize "Modified" 'face 'git-status-face))
('unknown (propertize "Unknown " 'face 'git-unknown-face))
('added (propertize "Added " 'face 'git-status-face))
('deleted (propertize "Deleted " 'face 'git-status-face))
('unmerged (propertize "Unmerged" 'face 'git-unmerged-face))
('uptodate (propertize "Uptodate" 'face 'git-uptodate-face))
('ignored (propertize "Ignored " 'face 'git-ignored-face))
(t "? ")))
(defun git-file-type-as-string (old-perm new-perm)
"Return a string describing the file type based on its permissions."
(let* ((old-type (lsh (or old-perm 0) -9))
(new-type (lsh (or new-perm 0) -9))
(str (case new-type
(64 ;; file
(case old-type
(64 nil)
(80 " (type change symlink -> file)")
(112 " (type change subproject -> file)")))
(80 ;; symlink
(case old-type
(64 " (type change file -> symlink)")
(112 " (type change subproject -> symlink)")
(t " (symlink)")))
(112 ;; subproject
(case old-type
(64 " (type change file -> subproject)")
(80 " (type change symlink -> subproject)")
(t " (subproject)")))
(72 nil) ;; directory (internal, not a real git state)
(0 ;; deleted or unknown
(case old-type
(80 " (symlink)")
(112 " (subproject)")))
(t (format " (unknown type %o)" new-type)))))
(cond (str (propertize str 'face 'git-status-face))
((eq new-type 72) "/")
(t ""))))
(defun git-rename-as-string (info)
"Return a string describing the copy or rename associated with INFO, or an empty string if none."
(let ((state (git-fileinfo->rename-state info)))
(if state
(propertize
(concat " ("
(if (eq state 'copy) "copied from "
(if (eq (git-fileinfo->state info) 'added) "renamed from "
"renamed to "))
(git-escape-file-name (git-fileinfo->orig-name info))
")") 'face 'git-status-face)
"")))
(defun git-permissions-as-string (old-perm new-perm)
"Format a permission change as string."
(propertize
(if (or (not old-perm)
(not new-perm)
(eq 0 (logand ?\111 (logxor old-perm new-perm))))
" "
(if (eq 0 (logand ?\111 old-perm)) "+x" "-x"))
'face 'git-permission-face))
(defun git-fileinfo-prettyprint (info)
"Pretty-printer for the git-fileinfo structure."
(let ((old-perm (git-fileinfo->old-perm info))
(new-perm (git-fileinfo->new-perm info)))
(insert (concat " " (if (git-fileinfo->marked info) (propertize "*" 'face 'git-mark-face) " ")
" " (git-status-code-as-string (git-fileinfo->state info))
" " (git-permissions-as-string old-perm new-perm)
" " (git-escape-file-name (git-fileinfo->name info))
(git-file-type-as-string old-perm new-perm)
(git-rename-as-string info)))))
(defun git-update-node-fileinfo (node info)
"Update the fileinfo of the specified node. The names are assumed to match already."
(let ((data (ewoc-data node)))
(setf
;; preserve the marked flag
(git-fileinfo->marked info) (git-fileinfo->marked data)
(git-fileinfo->needs-update data) nil)
(when (not (equal info data))
(setf (git-fileinfo->needs-refresh info) t
(ewoc-data node) info))))
(defun git-insert-info-list (status infolist files)
"Insert a sorted list of file infos in the status buffer, replacing existing ones if any."
(let* ((info (pop infolist))
(node (ewoc-nth status 0))
(name (and info (git-fileinfo->name info)))
remaining)
(while info
(let ((nodename (and node (git-fileinfo->name (ewoc-data node)))))
(while (and files (string-lessp (car files) name))
(push (pop files) remaining))
(when (and files (string-equal (car files) name))
(setq files (cdr files)))
(cond ((not nodename)
(setq node (ewoc-enter-last status info))
(setq info (pop infolist))
(setq name (and info (git-fileinfo->name info))))
((string-lessp nodename name)
(setq node (ewoc-next status node)))
((string-equal nodename name)
;; preserve the marked flag
(git-update-node-fileinfo node info)
(setq info (pop infolist))
(setq name (and info (git-fileinfo->name info))))
(t
(setq node (ewoc-enter-before status node info))
(setq info (pop infolist))
(setq name (and info (git-fileinfo->name info)))))))
(nconc (nreverse remaining) files)))
(defun git-run-diff-index (status files)
"Run git-diff-index on FILES and parse the results into STATUS.
Return the list of files that haven't been handled."
(let (infolist)
(with-temp-buffer
(apply #'git-call-process t "diff-index" "-z" "-M" "HEAD" "--" files)
(goto-char (point-min))
(while (re-search-forward
":\\([0-7]\\{6\\}\\) \\([0-7]\\{6\\}\\) [0-9a-f]\\{40\\} [0-9a-f]\\{40\\} \\(\\([ADMUT]\\)\0\\([^\0]+\\)\\|\\([CR]\\)[0-9]*\0\\([^\0]+\\)\0\\([^\0]+\\)\\)\0"
nil t 1)
(let ((old-perm (string-to-number (match-string 1) 8))
(new-perm (string-to-number (match-string 2) 8))
(state (or (match-string 4) (match-string 6)))
(name (or (match-string 5) (match-string 7)))
(new-name (match-string 8)))
(if new-name ; copy or rename
(if (eq ?C (string-to-char state))
(push (git-create-fileinfo 'added new-name old-perm new-perm 'copy name) infolist)
(push (git-create-fileinfo 'deleted name 0 0 'rename new-name) infolist)
(push (git-create-fileinfo 'added new-name old-perm new-perm 'rename name) infolist))
(push (git-create-fileinfo (git-state-code state) name old-perm new-perm) infolist)))))
(setq infolist (sort (nreverse infolist)
(lambda (info1 info2)
(string-lessp (git-fileinfo->name info1)
(git-fileinfo->name info2)))))
(git-insert-info-list status infolist files)))
(defun git-find-status-file (status file)
"Find a given file in the status ewoc and return its node."
(let ((node (ewoc-nth status 0)))
(while (and node (not (string= file (git-fileinfo->name (ewoc-data node)))))
(setq node (ewoc-next status node)))
node))
(defun git-run-ls-files (status files default-state &rest options)
"Run git-ls-files on FILES and parse the results into STATUS.
Return the list of files that haven't been handled."
(let (infolist)
(with-temp-buffer
(apply #'git-call-process t "ls-files" "-z" (append options (list "--") files))
(goto-char (point-min))
(while (re-search-forward "\\([^\0]*?\\)\\(/?\\)\0" nil t 1)
(let ((name (match-string 1)))
(push (git-create-fileinfo default-state name 0
(if (string-equal "/" (match-string 2)) (lsh ?\110 9) 0))
infolist))))
(setq infolist (nreverse infolist)) ;; assume it is sorted already
(git-insert-info-list status infolist files)))
(defun git-run-ls-files-cached (status files default-state)
"Run git-ls-files -c on FILES and parse the results into STATUS.
Return the list of files that haven't been handled."
(let (infolist)
(with-temp-buffer
(apply #'git-call-process t "ls-files" "-z" "-s" "-c" "--" files)
(goto-char (point-min))
(while (re-search-forward "\\([0-7]\\{6\\}\\) [0-9a-f]\\{40\\} 0\t\\([^\0]+\\)\0" nil t)
(let* ((new-perm (string-to-number (match-string 1) 8))
(old-perm (if (eq default-state 'added) 0 new-perm))
(name (match-string 2)))
(push (git-create-fileinfo default-state name old-perm new-perm) infolist))))
(setq infolist (nreverse infolist)) ;; assume it is sorted already
(git-insert-info-list status infolist files)))
(defun git-run-ls-unmerged (status files)
"Run git-ls-files -u on FILES and parse the results into STATUS."
(with-temp-buffer
(apply #'git-call-process t "ls-files" "-z" "-u" "--" files)
(goto-char (point-min))
(let (unmerged-files)
(while (re-search-forward "[0-7]\\{6\\} [0-9a-f]\\{40\\} [123]\t\\([^\0]+\\)\0" nil t)
(push (match-string 1) unmerged-files))
(setq unmerged-files (nreverse unmerged-files)) ;; assume it is sorted already
(git-set-filenames-state status unmerged-files 'unmerged))))
(defun git-get-exclude-files ()
"Get the list of exclude files to pass to git-ls-files."
(let (files
(config (git-config "core.excludesfile")))
(when (file-readable-p ".git/info/exclude")
(push ".git/info/exclude" files))
(when (and config (file-readable-p config))
(push config files))
files))
(defun git-run-ls-files-with-excludes (status files default-state &rest options)
"Run git-ls-files on FILES with appropriate --exclude-from options."
(let ((exclude-files (git-get-exclude-files)))
(apply #'git-run-ls-files status files default-state "--directory" "--no-empty-directory"
(concat "--exclude-per-directory=" git-per-dir-ignore-file)
(append options (mapcar (lambda (f) (concat "--exclude-from=" f)) exclude-files)))))
(defun git-update-status-files (&optional files mark-files)
"Update the status of FILES from the index.
The FILES list must be sorted."
(unless git-status (error "Not in git-status buffer."))
;; set the needs-update flag on existing files
(if files
(git-status-filenames-map
git-status (lambda (info) (setf (git-fileinfo->needs-update info) t)) files)
(ewoc-map (lambda (info) (setf (git-fileinfo->needs-update info) t) nil) git-status)
(git-call-process nil "update-index" "--refresh")
(when git-show-uptodate
(git-run-ls-files-cached git-status nil 'uptodate)))
(let ((remaining-files
(if (git-empty-db-p) ; we need some special handling for an empty db
(git-run-ls-files-cached git-status files 'added)
(git-run-diff-index git-status files))))
(git-run-ls-unmerged git-status files)
(when (or remaining-files (and git-show-unknown (not files)))
(setq remaining-files (git-run-ls-files-with-excludes git-status remaining-files 'unknown "-o")))
(when (or remaining-files (and git-show-ignored (not files)))
(setq remaining-files (git-run-ls-files-with-excludes git-status remaining-files 'ignored "-o" "-i")))
(unless files
(setq remaining-files (git-get-filenames (ewoc-collect git-status #'git-fileinfo->needs-update))))
(when remaining-files
(setq remaining-files (git-run-ls-files-cached git-status remaining-files 'uptodate)))
(git-set-filenames-state git-status remaining-files nil)
(when mark-files (git-mark-files git-status files))
(git-refresh-files)
(git-refresh-ewoc-hf git-status)))
(defun git-mark-files (status files)
"Mark all the specified FILES, and unmark the others."
(let ((file (and files (pop files)))
(node (ewoc-nth status 0)))
(while node
(let ((info (ewoc-data node)))
(if (and file (string-equal (git-fileinfo->name info) file))
(progn
(unless (git-fileinfo->marked info)
(setf (git-fileinfo->marked info) t)
(setf (git-fileinfo->needs-refresh info) t))
(setq file (pop files))
(setq node (ewoc-next status node)))
(when (git-fileinfo->marked info)
(setf (git-fileinfo->marked info) nil)
(setf (git-fileinfo->needs-refresh info) t))
(if (and file (string-lessp file (git-fileinfo->name info)))
(setq file (pop files))
(setq node (ewoc-next status node))))))))
(defun git-marked-files ()
"Return a list of all marked files, or if none a list containing just the file at cursor position."
(unless git-status (error "Not in git-status buffer."))
(or (ewoc-collect git-status (lambda (info) (git-fileinfo->marked info)))
(list (ewoc-data (ewoc-locate git-status)))))
(defun git-marked-files-state (&rest states)
"Return a sorted list of marked files that are in the specified states."
(let ((files (git-marked-files))
result)
(dolist (info files)
(when (memq (git-fileinfo->state info) states)
(push info result)))
(nreverse result)))
(defun git-refresh-files ()
"Refresh all files that need it and clear the needs-refresh flag."
(unless git-status (error "Not in git-status buffer."))
(ewoc-map
(lambda (info)
(let ((refresh (git-fileinfo->needs-refresh info)))
(setf (git-fileinfo->needs-refresh info) nil)
refresh))
git-status)
; move back to goal column
(when goal-column (move-to-column goal-column)))
(defun git-refresh-ewoc-hf (status)
"Refresh the ewoc header and footer."
(let ((branch (git-symbolic-ref "HEAD"))
(head (if (git-empty-db-p) "Nothing committed yet"
(git-get-commit-description "HEAD")))
(merge-heads (git-get-merge-heads)))
(ewoc-set-hf status
(format "Directory: %s\nBranch: %s\nHead: %s%s\n"
default-directory
(if branch
(if (string-match "^refs/heads/" branch)
(substring branch (match-end 0))
branch)
"none (detached HEAD)")
head
(if merge-heads
(concat "\nMerging: "
(mapconcat (lambda (str) (git-get-commit-description str)) merge-heads "\n "))
""))
(if (ewoc-nth status 0) "" " No changes."))))
(defun git-get-filenames (files)
(mapcar (lambda (info) (git-fileinfo->name info)) files))
(defun git-update-index (index-file files)
"Run git-update-index on a list of files."
(let ((process-environment (append (and index-file (list (concat "GIT_INDEX_FILE=" index-file)))
process-environment))
added deleted modified)
(dolist (info files)
(case (git-fileinfo->state info)
('added (push info added))
('deleted (push info deleted))
('modified (push info modified))))
(and
(or (not added) (apply #'git-call-process-display-error "update-index" "--add" "--" (git-get-filenames added)))
(or (not deleted) (apply #'git-call-process-display-error "update-index" "--remove" "--" (git-get-filenames deleted)))
(or (not modified) (apply #'git-call-process-display-error "update-index" "--" (git-get-filenames modified))))))
(defun git-run-pre-commit-hook ()
"Run the pre-commit hook if any."
(unless git-status (error "Not in git-status buffer."))
(let ((files (git-marked-files-state 'added 'deleted 'modified)))
(or (not files)
(not (file-executable-p ".git/hooks/pre-commit"))
(let ((index-file (make-temp-file "gitidx")))
(unwind-protect
(let ((head-tree (unless (git-empty-db-p) (git-rev-parse "HEAD^{tree}"))))
(git-read-tree head-tree index-file)
(git-update-index index-file files)
(git-run-hook "pre-commit" `(("GIT_INDEX_FILE" . ,index-file))))
(delete-file index-file))))))
(defun git-do-commit ()
"Perform the actual commit using the current buffer as log message."
(interactive)
(let ((buffer (current-buffer))
(index-file (make-temp-file "gitidx")))
(with-current-buffer log-edit-parent-buffer
(if (git-marked-files-state 'unmerged)
(message "You cannot commit unmerged files, resolve them first.")
(unwind-protect
(let ((files (git-marked-files-state 'added 'deleted 'modified))
head tree head-tree)
(unless (git-empty-db-p)
(setq head (git-rev-parse "HEAD")
head-tree (git-rev-parse "HEAD^{tree}")))
(message "Running git commit...")
(when
(and
(git-read-tree head-tree index-file)
(git-update-index nil files) ;update both the default index
(git-update-index index-file files) ;and the temporary one
(setq tree (git-write-tree index-file)))
(if (or (not (string-equal tree head-tree))
(yes-or-no-p "The tree was not modified, do you really want to perform an empty commit? "))
(let ((commit (git-commit-tree buffer tree head)))
(when commit
(condition-case nil (delete-file ".git/MERGE_HEAD") (error nil))
(condition-case nil (delete-file ".git/MERGE_MSG") (error nil))
(with-current-buffer buffer (erase-buffer))
(git-update-status-files (git-get-filenames files))
(git-call-process nil "rerere")
(git-call-process nil "gc" "--auto")
(message "Committed %s." commit)
(git-run-hook "post-commit" nil)))
(message "Commit aborted."))))
(delete-file index-file))))))
;;;; Interactive functions
;;;; ------------------------------------------------------------
(defun git-mark-file ()
"Mark the file that the cursor is on and move to the next one."
(interactive)
(unless git-status (error "Not in git-status buffer."))
(let* ((pos (ewoc-locate git-status))
(info (ewoc-data pos)))
(setf (git-fileinfo->marked info) t)
(ewoc-invalidate git-status pos)
(ewoc-goto-next git-status 1)))
(defun git-unmark-file ()
"Unmark the file that the cursor is on and move to the next one."
(interactive)
(unless git-status (error "Not in git-status buffer."))
(let* ((pos (ewoc-locate git-status))
(info (ewoc-data pos)))
(setf (git-fileinfo->marked info) nil)
(ewoc-invalidate git-status pos)
(ewoc-goto-next git-status 1)))
(defun git-unmark-file-up ()
"Unmark the file that the cursor is on and move to the previous one."
(interactive)
(unless git-status (error "Not in git-status buffer."))
(let* ((pos (ewoc-locate git-status))
(info (ewoc-data pos)))
(setf (git-fileinfo->marked info) nil)
(ewoc-invalidate git-status pos)
(ewoc-goto-prev git-status 1)))
(defun git-mark-all ()
"Mark all files."
(interactive)
(unless git-status (error "Not in git-status buffer."))
(ewoc-map (lambda (info) (unless (git-fileinfo->marked info)
(setf (git-fileinfo->marked info) t))) git-status)
; move back to goal column after invalidate
(when goal-column (move-to-column goal-column)))
(defun git-unmark-all ()
"Unmark all files."
(interactive)
(unless git-status (error "Not in git-status buffer."))
(ewoc-map (lambda (info) (when (git-fileinfo->marked info)
(setf (git-fileinfo->marked info) nil)
t)) git-status)
; move back to goal column after invalidate
(when goal-column (move-to-column goal-column)))
(defun git-toggle-all-marks ()
"Toggle all file marks."
(interactive)
(unless git-status (error "Not in git-status buffer."))
(ewoc-map (lambda (info) (setf (git-fileinfo->marked info) (not (git-fileinfo->marked info))) t) git-status)
; move back to goal column after invalidate
(when goal-column (move-to-column goal-column)))
(defun git-next-file (&optional n)