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Diffstat (limited to 'contrib/emacs/git.el')
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diff --git a/contrib/emacs/git.el b/contrib/emacs/git.el new file mode 100644 index 0000000000..eace9c18eb --- /dev/null +++ b/contrib/emacs/git.el @@ -0,0 +1,1706 @@ +;;; 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) + "Move the selection down N files." + (interactive "p") + (unless git-status (error "Not in git-status buffer.")) + (ewoc-goto-next git-status n)) + +(defun git-prev-file (&optional n) + "Move the selection up N files." + (interactive "p") + (unless git-status (error "Not in git-status buffer.")) + (ewoc-goto-prev git-status n)) + +(defun git-next-unmerged-file (&optional n) + "Move the selection down N unmerged files." + (interactive "p") + (unless git-status (error "Not in git-status buffer.")) + (let* ((last (ewoc-locate git-status)) + (node (ewoc-next git-status last))) + (while (and node (> n 0)) + (when (eq 'unmerged (git-fileinfo->state (ewoc-data node))) + (setq n (1- n)) + (setq last node)) + (setq node (ewoc-next git-status node))) + (ewoc-goto-node git-status last))) + +(defun git-prev-unmerged-file (&optional n) + "Move the selection up N unmerged files." + (interactive "p") + (unless git-status (error "Not in git-status buffer.")) + (let* ((last (ewoc-locate git-status)) + (node (ewoc-prev git-status last))) + (while (and node (> n 0)) + (when (eq 'unmerged (git-fileinfo->state (ewoc-data node))) + (setq n (1- n)) + (setq last node)) + (setq node (ewoc-prev git-status node))) + (ewoc-goto-node git-status last))) + +(defun git-insert-file (file) + "Insert file(s) into the git-status buffer." + (interactive "fInsert file: ") + (git-update-status-files (list (file-relative-name file)))) + +(defun git-add-file () + "Add marked file(s) to the index cache." + (interactive) + (let ((files (git-get-filenames (git-marked-files-state 'unknown 'ignored)))) + ;; FIXME: add support for directories + (unless files + (push (file-relative-name (read-file-name "File to add: " nil nil t)) files)) + (when (apply 'git-call-process-display-error "update-index" "--add" "--" files) + (git-update-status-files files) + (git-success-message "Added" files)))) + +(defun git-ignore-file () + "Add marked file(s) to the ignore list." + (interactive) + (let ((files (git-get-filenames (git-marked-files-state 'unknown)))) + (unless files + (push (file-relative-name (read-file-name "File to ignore: " nil nil t)) files)) + (dolist (f files) (git-append-to-ignore f)) + (git-update-status-files files) + (git-success-message "Ignored" files))) + +(defun git-remove-file () + "Remove the marked file(s)." + (interactive) + (let ((files (git-get-filenames (git-marked-files-state 'added 'modified 'unknown 'uptodate 'ignored)))) + (unless files + (push (file-relative-name (read-file-name "File to remove: " nil nil t)) files)) + (if (yes-or-no-p + (if (cdr files) + (format "Remove %d files? " (length files)) + (format "Remove %s? " (car files)))) + (progn + (dolist (name files) + (ignore-errors + (if (file-directory-p name) + (delete-directory name) + (delete-file name)))) + (when (apply 'git-call-process-display-error "update-index" "--remove" "--" files) + (git-update-status-files files) + (git-success-message "Removed" files))) + (message "Aborting")))) + +(defun git-revert-file () + "Revert changes to the marked file(s)." + (interactive) + (let ((files (git-marked-files-state 'added 'deleted 'modified 'unmerged)) + added modified) + (when (and files + (yes-or-no-p + (if (cdr files) + (format "Revert %d files? " (length files)) + (format "Revert %s? " (git-fileinfo->name (car files)))))) + (dolist (info files) + (case (git-fileinfo->state info) + ('added (push (git-fileinfo->name info) added)) + ('deleted (push (git-fileinfo->name info) modified)) + ('unmerged (push (git-fileinfo->name info) modified)) + ('modified (push (git-fileinfo->name info) modified)))) + ;; check if a buffer contains one of the files and isn't saved + (dolist (file modified) + (let ((buffer (get-file-buffer file))) + (when (and buffer (buffer-modified-p buffer)) + (error "Buffer %s is modified. Please kill or save modified buffers before reverting." (buffer-name buffer))))) + (let ((ok (and + (or (not added) + (apply 'git-call-process-display-error "update-index" "--force-remove" "--" added)) + (or (not modified) + (apply 'git-call-process-display-error "checkout" "HEAD" modified)))) + (names (git-get-filenames files))) + (git-update-status-files names) + (when ok + (dolist (file modified) + (let ((buffer (get-file-buffer file))) + (when buffer (with-current-buffer buffer (revert-buffer t t t))))) + (git-success-message "Reverted" names)))))) + +(defun git-resolve-file () + "Resolve conflicts in marked file(s)." + (interactive) + (let ((files (git-get-filenames (git-marked-files-state 'unmerged)))) + (when files + (when (apply 'git-call-process-display-error "update-index" "--" files) + (git-update-status-files files) + (git-success-message "Resolved" files))))) + +(defun git-remove-handled () + "Remove handled files from the status list." + (interactive) + (ewoc-filter git-status + (lambda (info) + (case (git-fileinfo->state info) + ('ignored git-show-ignored) + ('uptodate git-show-uptodate) + ('unknown git-show-unknown) + (t t)))) + (unless (ewoc-nth git-status 0) ; refresh header if list is empty + (git-refresh-ewoc-hf git-status))) + +(defun git-toggle-show-uptodate () + "Toogle the option for showing up-to-date files." + (interactive) + (if (setq git-show-uptodate (not git-show-uptodate)) + (git-refresh-status) + (git-remove-handled))) + +(defun git-toggle-show-ignored () + "Toogle the option for showing ignored files." + (interactive) + (if (setq git-show-ignored (not git-show-ignored)) + (progn + (message "Inserting ignored files...") + (git-run-ls-files-with-excludes git-status nil 'ignored "-o" "-i") + (git-refresh-files) + (git-refresh-ewoc-hf git-status) + (message "Inserting ignored files...done")) + (git-remove-handled))) + +(defun git-toggle-show-unknown () + "Toogle the option for showing unknown files." + (interactive) + (if (setq git-show-unknown (not git-show-unknown)) + (progn + (message "Inserting unknown files...") + (git-run-ls-files-with-excludes git-status nil 'unknown "-o") + (git-refresh-files) + (git-refresh-ewoc-hf git-status) + (message "Inserting unknown files...done")) + (git-remove-handled))) + +(defun git-expand-directory (info) + "Expand the directory represented by INFO to list its files." + (when (eq (lsh (git-fileinfo->new-perm info) -9) ?\110) + (let ((dir (git-fileinfo->name info))) + (git-set-filenames-state git-status (list dir) nil) + (git-run-ls-files-with-excludes git-status (list (concat dir "/")) 'unknown "-o") + (git-refresh-files) + (git-refresh-ewoc-hf git-status) + t))) + +(defun git-setup-diff-buffer (buffer) + "Setup a buffer for displaying a diff." + (let ((dir default-directory)) + (with-current-buffer buffer + (diff-mode) + (goto-char (point-min)) + (setq default-directory dir) + (setq buffer-read-only t))) + (display-buffer buffer) + ; shrink window only if it displays the status buffer + (when (eq (window-buffer) (current-buffer)) + (shrink-window-if-larger-than-buffer))) + +(defun git-diff-file () + "Diff the marked file(s) against HEAD." + (interactive) + (let ((files (git-marked-files))) + (git-setup-diff-buffer + (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M" "HEAD" "--" (git-get-filenames files))))) + +(defun git-diff-file-merge-head (arg) + "Diff the marked file(s) against the first merge head (or the nth one with a numeric prefix)." + (interactive "p") + (let ((files (git-marked-files)) + (merge-heads (git-get-merge-heads))) + (unless merge-heads (error "No merge in progress")) + (git-setup-diff-buffer + (apply #'git-run-command-buffer "*git-diff*" "diff-index" "-p" "-M" + (or (nth (1- arg) merge-heads) "HEAD") "--" (git-get-filenames files))))) + +(defun git-diff-unmerged-file (stage) + "Diff the marked unmerged file(s) against the specified stage." + (let ((files (git-marked-files))) + (git-setup-diff-buffer + (apply #'git-run-command-buffer "*git-diff*" "diff-files" "-p" stage "--" (git-get-filenames files))))) + +(defun git-diff-file-base () + "Diff the marked unmerged file(s) against the common base file." + (interactive) + (git-diff-unmerged-file "-1")) + +(defun git-diff-file-mine () + "Diff the marked unmerged file(s) against my pre-merge version." + (interactive) + (git-diff-unmerged-file "-2")) + +(defun git-diff-file-other () + "Diff the marked unmerged file(s) against the other's pre-merge version." + (interactive) + (git-diff-unmerged-file "-3")) + +(defun git-diff-file-combined () + "Do a combined diff of the marked unmerged file(s)." + (interactive) + (git-diff-unmerged-file "-c")) + +(defun git-diff-file-idiff () + "Perform an interactive diff on the current file." + (interactive) + (let ((files (git-marked-files-state 'added 'deleted 'modified))) + (unless (eq 1 (length files)) + (error "Cannot perform an interactive diff on multiple files.")) + (let* ((filename (car (git-get-filenames files))) + (buff1 (find-file-noselect filename)) + (buff2 (git-run-command-buffer (concat filename ".~HEAD~") "cat-file" "blob" (concat "HEAD:" filename)))) + (ediff-buffers buff1 buff2)))) + +(defun git-log-file () + "Display a log of changes to the marked file(s)." + (interactive) + (let* ((files (git-marked-files)) + (coding-system-for-read git-commits-coding-system) + (buffer (apply #'git-run-command-buffer "*git-log*" "rev-list" "--pretty" "HEAD" "--" (git-get-filenames files)))) + (with-current-buffer buffer + ; (git-log-mode) FIXME: implement log mode + (goto-char (point-min)) + (setq buffer-read-only t)) + (display-buffer buffer))) + +(defun git-log-edit-files () + "Return a list of marked files for use in the log-edit buffer." + (with-current-buffer log-edit-parent-buffer + (git-get-filenames (git-marked-files-state 'added 'deleted 'modified)))) + +(defun git-log-edit-diff () + "Run a diff of the current files being committed from a log-edit buffer." + (with-current-buffer log-edit-parent-buffer + (git-diff-file))) + +(defun git-append-sign-off (name email) + "Append a Signed-off-by entry to the current buffer, avoiding duplicates." + (let ((sign-off (format "Signed-off-by: %s <%s>" name email)) + (case-fold-search t)) + (goto-char (point-min)) + (unless (re-search-forward (concat "^" (regexp-quote sign-off)) nil t) + (goto-char (point-min)) + (unless (re-search-forward "^Signed-off-by: " nil t) + (setq sign-off (concat "\n" sign-off))) + (goto-char (point-max)) + (insert sign-off "\n")))) + +(defun git-setup-log-buffer (buffer &optional merge-heads author-name author-email subject date msg) + "Setup the log buffer for a commit." + (unless git-status (error "Not in git-status buffer.")) + (let ((dir default-directory) + (committer-name (git-get-committer-name)) + (committer-email (git-get-committer-email)) + (sign-off git-append-signed-off-by)) + (with-current-buffer buffer + (cd dir) + (erase-buffer) + (insert + (propertize + (format "Author: %s <%s>\n%s%s" + (or author-name committer-name) + (or author-email committer-email) + (if date (format "Date: %s\n" date) "") + (if merge-heads + (format "Merge: %s\n" + (mapconcat 'identity merge-heads " ")) + "")) + 'face 'git-header-face) + (propertize git-log-msg-separator 'face 'git-separator-face) + "\n") + (when subject (insert subject "\n\n")) + (cond (msg (insert msg "\n")) + ((file-readable-p ".git/rebase-apply/msg") + (insert-file-contents ".git/rebase-apply/msg")) + ((file-readable-p ".git/MERGE_MSG") + (insert-file-contents ".git/MERGE_MSG"))) + ; delete empty lines at end + (goto-char (point-min)) + (when (re-search-forward "\n+\\'" nil t) + (replace-match "\n" t t)) + (when sign-off (git-append-sign-off committer-name committer-email))) + buffer)) + +(defun git-commit-file () + "Commit the marked file(s), asking for a commit message." + (interactive) + (unless git-status (error "Not in git-status buffer.")) + (when (git-run-pre-commit-hook) + (let ((buffer (get-buffer-create "*git-commit*")) + (coding-system (git-get-commits-coding-system)) + author-name author-email subject date) + (when (eq 0 (buffer-size buffer)) + (when (file-readable-p ".git/rebase-apply/info") + (with-temp-buffer + (insert-file-contents ".git/rebase-apply/info") + (goto-char (point-min)) + (when (re-search-forward "^Author: \\(.*\\)\nEmail: \\(.*\\)$" nil t) + (setq author-name (match-string 1)) + (setq author-email (match-string 2))) + (goto-char (point-min)) + (when (re-search-forward "^Subject: \\(.*\\)$" nil t) + (setq subject (match-string 1))) + (goto-char (point-min)) + (when (re-search-forward "^Date: \\(.*\\)$" nil t) + (setq date (match-string 1))))) + (git-setup-log-buffer buffer (git-get-merge-heads) author-name author-email subject date)) + (if (boundp 'log-edit-diff-function) + (log-edit 'git-do-commit nil '((log-edit-listfun . git-log-edit-files) + (log-edit-diff-function . git-log-edit-diff)) buffer) + (log-edit 'git-do-commit nil 'git-log-edit-files buffer)) + (setq font-lock-keywords (font-lock-compile-keywords git-log-edit-font-lock-keywords)) + (setq paragraph-separate (concat (regexp-quote git-log-msg-separator) "$\\|Author: \\|Date: \\|Merge: \\|Signed-off-by: \\|\f\\|[ ]*$")) + (setq buffer-file-coding-system coding-system) + (re-search-forward (regexp-quote (concat git-log-msg-separator "\n")) nil t)))) + +(defun git-setup-commit-buffer (commit) + "Setup the commit buffer with the contents of COMMIT." + (let (parents author-name author-email subject date msg) + (with-temp-buffer + (let ((coding-system (git-get-logoutput-coding-system))) + (git-call-process t "log" "-1" "--pretty=medium" "--abbrev=40" commit) + (goto-char (point-min)) + (when (re-search-forward "^Merge: *\\(.*\\)$" nil t) + (setq parents (cdr (split-string (match-string 1) " +")))) + (when (re-search-forward "^Author: *\\(.*\\) <\\(.*\\)>$" nil t) + (setq author-name (match-string 1)) + (setq author-email (match-string 2))) + (when (re-search-forward "^Date: *\\(.*\\)$" nil t) + (setq date (match-string 1))) + (while (re-search-forward "^ \\(.*\\)$" nil t) + (push (match-string 1) msg)) + (setq msg (nreverse msg)) + (setq subject (pop msg)) + (while (and msg (zerop (length (car msg))) (pop msg))))) + (git-setup-log-buffer (get-buffer-create "*git-commit*") + parents author-name author-email subject date + (mapconcat #'identity msg "\n")))) + +(defun git-get-commit-files (commit) + "Retrieve a sorted list of files modified by COMMIT." + (let (files) + (with-temp-buffer + (git-call-process t "diff-tree" "-m" "-r" "-z" "--name-only" "--no-commit-id" "--root" commit) + (goto-char (point-min)) + (while (re-search-forward "\\([^\0]*\\)\0" nil t 1) + (push (match-string 1) files))) + (sort files #'string-lessp))) + +(defun git-read-commit-name (prompt &optional default) + "Ask for a commit name, with completion for local branch, remote branch and tag." + (completing-read prompt + (list* "HEAD" "ORIG_HEAD" "FETCH_HEAD" (mapcar #'car (git-for-each-ref))) + nil nil nil nil default)) + +(defun git-checkout (branch &optional merge) + "Checkout a branch, tag, or any commit. +Use a prefix arg if git should merge while checking out." + (interactive + (list (git-read-commit-name "Checkout: ") + current-prefix-arg)) + (unless git-status (error "Not in git-status buffer.")) + (let ((args (list branch "--"))) + (when merge (push "-m" args)) + (when (apply #'git-call-process-display-error "checkout" args) + (git-update-status-files)))) + +(defun git-branch (branch) + "Create a branch from the current HEAD and switch to it." + (interactive (list (git-read-commit-name "Branch: "))) + (unless git-status (error "Not in git-status buffer.")) + (if (git-rev-parse (concat "refs/heads/" branch)) + (if (yes-or-no-p (format "Branch %s already exists, replace it? " branch)) + (and (git-call-process-display-error "branch" "-f" branch) + (git-call-process-display-error "checkout" branch)) + (message "Canceled.")) + (git-call-process-display-error "checkout" "-b" branch)) + (git-refresh-ewoc-hf git-status)) + +(defun git-amend-commit () + "Undo the last commit on HEAD, and set things up to commit an +amended version of it." + (interactive) + (unless git-status (error "Not in git-status buffer.")) + (when (git-empty-db-p) (error "No commit to amend.")) + (let* ((commit (git-rev-parse "HEAD")) + (files (git-get-commit-files commit))) + (when (if (git-rev-parse "HEAD^") + (git-call-process-display-error "reset" "--soft" "HEAD^") + (and (git-update-ref "ORIG_HEAD" commit) + (git-update-ref "HEAD" nil commit))) + (git-update-status-files files t) + (git-setup-commit-buffer commit) + (git-commit-file)))) + +(defun git-cherry-pick-commit (arg) + "Cherry-pick a commit." + (interactive (list (git-read-commit-name "Cherry-pick commit: "))) + (unless git-status (error "Not in git-status buffer.")) + (let ((commit (git-rev-parse (concat arg "^0")))) + (unless commit (error "Not a valid commit '%s'." arg)) + (when (git-rev-parse (concat commit "^2")) + (error "Cannot cherry-pick a merge commit.")) + (let ((files (git-get-commit-files commit)) + (ok (git-call-process-display-error "cherry-pick" "-n" commit))) + (git-update-status-files files ok) + (with-current-buffer (git-setup-commit-buffer commit) + (goto-char (point-min)) + (if (re-search-forward "^\n*Signed-off-by:" nil t 1) + (goto-char (match-beginning 0)) + (goto-char (point-max))) + (insert "(cherry picked from commit " commit ")\n")) + (when ok (git-commit-file))))) + +(defun git-revert-commit (arg) + "Revert a commit." + (interactive (list (git-read-commit-name "Revert commit: "))) + (unless git-status (error "Not in git-status buffer.")) + (let ((commit (git-rev-parse (concat arg "^0")))) + (unless commit (error "Not a valid commit '%s'." arg)) + (when (git-rev-parse (concat commit "^2")) + (error "Cannot revert a merge commit.")) + (let ((files (git-get-commit-files commit)) + (subject (git-get-commit-description commit)) + (ok (git-call-process-display-error "revert" "-n" commit))) + (git-update-status-files files ok) + (when (string-match "^[0-9a-f]+ - \\(.*\\)$" subject) + (setq subject (match-string 1 subject))) + (git-setup-log-buffer (get-buffer-create "*git-commit*") + (git-get-merge-heads) nil nil (format "Revert \"%s\"" subject) nil + (format "This reverts commit %s.\n" commit)) + (when ok (git-commit-file))))) + +(defun git-find-file () + "Visit the current file in its own buffer." + (interactive) + (unless git-status (error "Not in git-status buffer.")) + (let ((info (ewoc-data (ewoc-locate git-status)))) + (unless (git-expand-directory info) + (find-file (git-fileinfo->name info)) + (when (eq 'unmerged (git-fileinfo->state info)) + (smerge-mode 1))))) + +(defun git-find-file-other-window () + "Visit the current file in its own buffer in another window." + (interactive) + (unless git-status (error "Not in git-status buffer.")) + (let ((info (ewoc-data (ewoc-locate git-status)))) + (find-file-other-window (git-fileinfo->name info)) + (when (eq 'unmerged (git-fileinfo->state info)) + (smerge-mode)))) + +(defun git-find-file-imerge () + "Visit the current file in interactive merge mode." + (interactive) + (unless git-status (error "Not in git-status buffer.")) + (let ((info (ewoc-data (ewoc-locate git-status)))) + (find-file (git-fileinfo->name info)) + (smerge-ediff))) + +(defun git-view-file () + "View the current file in its own buffer." + (interactive) + (unless git-status (error "Not in git-status buffer.")) + (let ((info (ewoc-data (ewoc-locate git-status)))) + (view-file (git-fileinfo->name info)))) + +(defun git-refresh-status () + "Refresh the git status buffer." + (interactive) + (unless git-status (error "Not in git-status buffer.")) + (message "Refreshing git status...") + (git-update-status-files) + (message "Refreshing git status...done")) + +(defun git-status-quit () + "Quit git-status mode." + (interactive) + (bury-buffer)) + +;;;; Major Mode +;;;; ------------------------------------------------------------ + +(defvar git-status-mode-hook nil + "Run after `git-status-mode' is setup.") + +(defvar git-status-mode-map nil + "Keymap for git major mode.") + +(defvar git-status nil + "List of all files managed by the git-status mode.") + +(unless git-status-mode-map + (let ((map (make-keymap)) + (commit-map (make-sparse-keymap)) + (diff-map (make-sparse-keymap)) + (toggle-map (make-sparse-keymap))) + (suppress-keymap map) + (define-key map "?" 'git-help) + (define-key map "h" 'git-help) + (define-key map " " 'git-next-file) + (define-key map "a" 'git-add-file) + (define-key map "c" 'git-commit-file) + (define-key map "\C-c" commit-map) + (define-key map "d" diff-map) + (define-key map "=" 'git-diff-file) + (define-key map "f" 'git-find-file) + (define-key map "\r" 'git-find-file) + (define-key map "g" 'git-refresh-status) + (define-key map "i" 'git-ignore-file) + (define-key map "I" 'git-insert-file) + (define-key map "l" 'git-log-file) + (define-key map "m" 'git-mark-file) + (define-key map "M" 'git-mark-all) + (define-key map "n" 'git-next-file) + (define-key map "N" 'git-next-unmerged-file) + (define-key map "o" 'git-find-file-other-window) + (define-key map "p" 'git-prev-file) + (define-key map "P" 'git-prev-unmerged-file) + (define-key map "q" 'git-status-quit) + (define-key map "r" 'git-remove-file) + (define-key map "R" 'git-resolve-file) + (define-key map "t" toggle-map) + (define-key map "T" 'git-toggle-all-marks) + (define-key map "u" 'git-unmark-file) + (define-key map "U" 'git-revert-file) + (define-key map "v" 'git-view-file) + (define-key map "x" 'git-remove-handled) + (define-key map "\C-?" 'git-unmark-file-up) + (define-key map "\M-\C-?" 'git-unmark-all) + ; the commit submap + (define-key commit-map "\C-a" 'git-amend-commit) + (define-key commit-map "\C-b" 'git-branch) + (define-key commit-map "\C-o" 'git-checkout) + (define-key commit-map "\C-p" 'git-cherry-pick-commit) + (define-key commit-map "\C-v" 'git-revert-commit) + ; the diff submap + (define-key diff-map "b" 'git-diff-file-base) + (define-key diff-map "c" 'git-diff-file-combined) + (define-key diff-map "=" 'git-diff-file) + (define-key diff-map "e" 'git-diff-file-idiff) + (define-key diff-map "E" 'git-find-file-imerge) + (define-key diff-map "h" 'git-diff-file-merge-head) + (define-key diff-map "m" 'git-diff-file-mine) + (define-key diff-map "o" 'git-diff-file-other) + ; the toggle submap + (define-key toggle-map "u" 'git-toggle-show-uptodate) + (define-key toggle-map "i" 'git-toggle-show-ignored) + (define-key toggle-map "k" 'git-toggle-show-unknown) + (define-key toggle-map "m" 'git-toggle-all-marks) + (setq git-status-mode-map map)) + (easy-menu-define git-menu git-status-mode-map + "Git Menu" + `("Git" + ["Refresh" git-refresh-status t] + ["Commit" git-commit-file t] + ["Checkout..." git-checkout t] + ["New Branch..." git-branch t] + ["Cherry-pick Commit..." git-cherry-pick-commit t] + ["Revert Commit..." git-revert-commit t] + ("Merge" + ["Next Unmerged File" git-next-unmerged-file t] + ["Prev Unmerged File" git-prev-unmerged-file t] + ["Mark as Resolved" git-resolve-file t] + ["Interactive Merge File" git-find-file-imerge t] + ["Diff Against Common Base File" git-diff-file-base t] + ["Diff Combined" git-diff-file-combined t] + ["Diff Against Merge Head" git-diff-file-merge-head t] + ["Diff Against Mine" git-diff-file-mine t] + ["Diff Against Other" git-diff-file-other t]) + "--------" + ["Add File" git-add-file t] + ["Revert File" git-revert-file t] + ["Ignore File" git-ignore-file t] + ["Remove File" git-remove-file t] + ["Insert File" git-insert-file t] + "--------" + ["Find File" git-find-file t] + ["View File" git-view-file t] + ["Diff File" git-diff-file t] + ["Interactive Diff File" git-diff-file-idiff t] + ["Log" git-log-file t] + "--------" + ["Mark" git-mark-file t] + ["Mark All" git-mark-all t] + ["Unmark" git-unmark-file t] + ["Unmark All" git-unmark-all t] + ["Toggle All Marks" git-toggle-all-marks t] + ["Hide Handled Files" git-remove-handled t] + "--------" + ["Show Uptodate Files" git-toggle-show-uptodate :style toggle :selected git-show-uptodate] + ["Show Ignored Files" git-toggle-show-ignored :style toggle :selected git-show-ignored] + ["Show Unknown Files" git-toggle-show-unknown :style toggle :selected git-show-unknown] + "--------" + ["Quit" git-status-quit t]))) + + +;; git mode should only run in the *git status* buffer +(put 'git-status-mode 'mode-class 'special) + +(defun git-status-mode () + "Major mode for interacting with Git. +Commands: +\\{git-status-mode-map}" + (kill-all-local-variables) + (buffer-disable-undo) + (setq mode-name "git status" + major-mode 'git-status-mode + goal-column 17 + buffer-read-only t) + (use-local-map git-status-mode-map) + (let ((buffer-read-only nil)) + (erase-buffer) + (let ((status (ewoc-create 'git-fileinfo-prettyprint "" ""))) + (set (make-local-variable 'git-status) status)) + (set (make-local-variable 'list-buffers-directory) default-directory) + (make-local-variable 'git-show-uptodate) + (make-local-variable 'git-show-ignored) + (make-local-variable 'git-show-unknown) + (run-hooks 'git-status-mode-hook))) + +(defun git-find-status-buffer (dir) + "Find the git status buffer handling a specified directory." + (let ((list (buffer-list)) + (fulldir (expand-file-name dir)) + found) + (while (and list (not found)) + (let ((buffer (car list))) + (with-current-buffer buffer + (when (and list-buffers-directory + (string-equal fulldir (expand-file-name list-buffers-directory)) + (eq major-mode 'git-status-mode)) + (setq found buffer)))) + (setq list (cdr list))) + found)) + +(defun git-status (dir) + "Entry point into git-status mode." + (interactive "DSelect directory: ") + (setq dir (git-get-top-dir dir)) + (if (file-directory-p (concat (file-name-as-directory dir) ".git")) + (let ((buffer (or (and git-reuse-status-buffer (git-find-status-buffer dir)) + (create-file-buffer (expand-file-name "*git-status*" dir))))) + (switch-to-buffer buffer) + (cd dir) + (git-status-mode) + (git-refresh-status) + (goto-char (point-min)) + (add-hook 'after-save-hook 'git-update-saved-file)) + (message "%s is not a git working tree." dir))) + +(defun git-update-saved-file () + "Update the corresponding git-status buffer when a file is saved. +Meant to be used in `after-save-hook'." + (let* ((file (expand-file-name buffer-file-name)) + (dir (condition-case nil (git-get-top-dir (file-name-directory file)) (error nil))) + (buffer (and dir (git-find-status-buffer dir)))) + (when buffer + (with-current-buffer buffer + (let ((filename (file-relative-name file dir))) + ; skip files located inside the .git directory + (unless (string-match "^\\.git/" filename) + (git-call-process nil "add" "--refresh" "--" filename) + (git-update-status-files (list filename)))))))) + +(defun git-help () + "Display help for Git mode." + (interactive) + (describe-function 'git-status-mode)) + +(provide 'git) +;;; git.el ends here |