454 lines
17 KiB
EmacsLisp
454 lines
17 KiB
EmacsLisp
|
;;; magit-wip.el --- Commit snapshots to work-in-progress refs -*- lexical-binding:t -*-
|
||
|
|
||
|
;; Copyright (C) 2008-2022 The Magit Project Contributors
|
||
|
|
||
|
;; Author: Jonas Bernoulli <jonas@bernoul.li>
|
||
|
;; Maintainer: Jonas Bernoulli <jonas@bernoul.li>
|
||
|
|
||
|
;; SPDX-License-Identifier: GPL-3.0-or-later
|
||
|
|
||
|
;; Magit 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 3 of the License, or
|
||
|
;; (at your option) any later version.
|
||
|
;;
|
||
|
;; Magit 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 Magit. If not, see <https://www.gnu.org/licenses/>.
|
||
|
|
||
|
;;; Commentary:
|
||
|
|
||
|
;; This library defines tree global modes which automatically commit
|
||
|
;; snapshots to branch-specific work-in-progress refs before and after
|
||
|
;; making changes, and two commands which can be used to do so on
|
||
|
;; demand.
|
||
|
|
||
|
;;; Code:
|
||
|
|
||
|
(require 'magit-core)
|
||
|
(require 'magit-log)
|
||
|
|
||
|
;;; Options
|
||
|
|
||
|
(defgroup magit-wip nil
|
||
|
"Automatically commit to work-in-progress refs."
|
||
|
:link '(info-link "(magit)Wip Modes")
|
||
|
:group 'magit-modes
|
||
|
:group 'magit-essentials)
|
||
|
|
||
|
(defgroup magit-wip-legacy nil
|
||
|
"It is better to not use these modes individually."
|
||
|
:link '(info-link "(magit)Legacy Wip Modes")
|
||
|
:group 'magit-wip)
|
||
|
|
||
|
(defcustom magit-wip-mode-lighter " Wip"
|
||
|
"Lighter for Magit-Wip mode."
|
||
|
:package-version '(magit . "2.90.0")
|
||
|
:group 'magit-wip
|
||
|
:type 'string)
|
||
|
|
||
|
(defcustom magit-wip-after-save-local-mode-lighter ""
|
||
|
"Lighter for Magit-Wip-After-Save-Local mode."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip-legacy
|
||
|
:type 'string)
|
||
|
|
||
|
(defcustom magit-wip-after-apply-mode-lighter ""
|
||
|
"Lighter for Magit-Wip-After-Apply mode."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip-legacy
|
||
|
:type 'string)
|
||
|
|
||
|
(defcustom magit-wip-before-change-mode-lighter ""
|
||
|
"Lighter for Magit-Wip-Before-Change mode."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip-legacy
|
||
|
:type 'string)
|
||
|
|
||
|
(defcustom magit-wip-initial-backup-mode-lighter ""
|
||
|
"Lighter for Magit-Wip-Initial Backup mode."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip-legacy
|
||
|
:type 'string)
|
||
|
|
||
|
(defcustom magit-wip-merge-branch nil
|
||
|
"Whether to merge the current branch into its wip ref.
|
||
|
|
||
|
If non-nil and the current branch has new commits, then it is
|
||
|
merged into the wip ref before creating a new wip commit. This
|
||
|
makes it easier to inspect wip history and the wip commits are
|
||
|
never garbage collected.
|
||
|
|
||
|
If nil and the current branch has new commits, then the wip ref
|
||
|
is reset to the tip of the branch before creating a new wip
|
||
|
commit. With this setting wip commits are eventually garbage
|
||
|
collected. This is currently the default."
|
||
|
:package-version '(magit . "2.90.0")
|
||
|
:group 'magit-wip
|
||
|
:type 'boolean)
|
||
|
|
||
|
(defcustom magit-wip-namespace "refs/wip/"
|
||
|
"Namespace used for work-in-progress refs.
|
||
|
The wip refs are named \"<namespace/>index/<branchref>\"
|
||
|
and \"<namespace/>wtree/<branchref>\". When snapshots
|
||
|
are created while the `HEAD' is detached then \"HEAD\"
|
||
|
is used as `branch-ref'."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip
|
||
|
:type 'string)
|
||
|
|
||
|
;;; Modes
|
||
|
|
||
|
;;;###autoload
|
||
|
(define-minor-mode magit-wip-mode
|
||
|
"Save uncommitted changes to work-in-progress refs.
|
||
|
|
||
|
Whenever appropriate (i.e. when dataloss would be a possibility
|
||
|
otherwise) this mode causes uncommitted changes to be committed
|
||
|
to dedicated work-in-progress refs.
|
||
|
|
||
|
For historic reasons this mode is implemented on top of four
|
||
|
other `magit-wip-*' modes, which can also be used individually,
|
||
|
if you want finer control over when the wip refs are updated;
|
||
|
but that is discouraged."
|
||
|
:package-version '(magit . "2.90.0")
|
||
|
:lighter magit-wip-mode-lighter
|
||
|
:global t
|
||
|
(let ((arg (if magit-wip-mode 1 -1)))
|
||
|
(magit-wip-after-save-mode arg)
|
||
|
(magit-wip-after-apply-mode arg)
|
||
|
(magit-wip-before-change-mode arg)
|
||
|
(magit-wip-initial-backup-mode arg)))
|
||
|
|
||
|
(define-minor-mode magit-wip-after-save-local-mode
|
||
|
"After saving, also commit to a worktree work-in-progress ref.
|
||
|
|
||
|
After saving the current file-visiting buffer this mode also
|
||
|
commits the changes to the worktree work-in-progress ref for
|
||
|
the current branch.
|
||
|
|
||
|
This mode should be enabled globally by turning on the globalized
|
||
|
variant `magit-wip-after-save-mode'."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:lighter magit-wip-after-save-local-mode-lighter
|
||
|
(if magit-wip-after-save-local-mode
|
||
|
(if (and buffer-file-name (magit-inside-worktree-p t))
|
||
|
(add-hook 'after-save-hook #'magit-wip-commit-buffer-file t t)
|
||
|
(setq magit-wip-after-save-local-mode nil)
|
||
|
(user-error "Need a worktree and a file"))
|
||
|
(remove-hook 'after-save-hook #'magit-wip-commit-buffer-file t)))
|
||
|
|
||
|
(defun magit-wip-after-save-local-mode-turn-on ()
|
||
|
(and buffer-file-name
|
||
|
(magit-inside-worktree-p t)
|
||
|
(magit-file-tracked-p buffer-file-name)
|
||
|
(magit-wip-after-save-local-mode)))
|
||
|
|
||
|
;;;###autoload
|
||
|
(define-globalized-minor-mode magit-wip-after-save-mode
|
||
|
magit-wip-after-save-local-mode magit-wip-after-save-local-mode-turn-on
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip)
|
||
|
|
||
|
(defun magit-wip-commit-buffer-file (&optional msg)
|
||
|
"Commit visited file to a worktree work-in-progress ref.
|
||
|
|
||
|
Also see `magit-wip-after-save-mode' which calls this function
|
||
|
automatically whenever a buffer visiting a tracked file is saved."
|
||
|
(interactive)
|
||
|
(--when-let (magit-wip-get-ref)
|
||
|
(magit-with-toplevel
|
||
|
(let ((file (file-relative-name buffer-file-name)))
|
||
|
(magit-wip-commit-worktree
|
||
|
it (list file)
|
||
|
(format (cond (msg)
|
||
|
((called-interactively-p 'any)
|
||
|
"wip-save %s after save")
|
||
|
(t
|
||
|
"autosave %s after save"))
|
||
|
file))))))
|
||
|
|
||
|
;;;###autoload
|
||
|
(define-minor-mode magit-wip-after-apply-mode
|
||
|
"Commit to work-in-progress refs.
|
||
|
|
||
|
After applying a change using any \"apply variant\"
|
||
|
command (apply, stage, unstage, discard, and reverse) commit the
|
||
|
affected files to the current wip refs. For each branch there
|
||
|
may be two wip refs; one contains snapshots of the files as found
|
||
|
in the worktree and the other contains snapshots of the entries
|
||
|
in the index."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip
|
||
|
:lighter magit-wip-after-apply-mode-lighter
|
||
|
:global t)
|
||
|
|
||
|
(defun magit-wip-commit-after-apply (&optional files msg)
|
||
|
(when magit-wip-after-apply-mode
|
||
|
(magit-wip-commit files msg)))
|
||
|
|
||
|
;;;###autoload
|
||
|
(define-minor-mode magit-wip-before-change-mode
|
||
|
"Commit to work-in-progress refs before certain destructive changes.
|
||
|
|
||
|
Before invoking a revert command or an \"apply variant\"
|
||
|
command (apply, stage, unstage, discard, and reverse) commit the
|
||
|
affected tracked files to the current wip refs. For each branch
|
||
|
there may be two wip refs; one contains snapshots of the files
|
||
|
as found in the worktree and the other contains snapshots of the
|
||
|
entries in the index.
|
||
|
|
||
|
Only changes to files which could potentially be affected by the
|
||
|
command which is about to be called are committed."
|
||
|
:package-version '(magit . "2.1.0")
|
||
|
:group 'magit-wip
|
||
|
:lighter magit-wip-before-change-mode-lighter
|
||
|
:global t)
|
||
|
|
||
|
(defun magit-wip-commit-before-change (&optional files msg)
|
||
|
(when magit-wip-before-change-mode
|
||
|
(magit-with-toplevel
|
||
|
(magit-wip-commit files msg))))
|
||
|
|
||
|
(define-minor-mode magit-wip-initial-backup-mode
|
||
|
"Before saving a buffer for the first time, commit to a wip ref."
|
||
|
:package-version '(magit . "2.90.0")
|
||
|
:group 'magit-wip
|
||
|
:lighter magit-wip-initial-backup-mode-lighter
|
||
|
:global t
|
||
|
(if magit-wip-initial-backup-mode
|
||
|
(add-hook 'before-save-hook #'magit-wip-commit-initial-backup)
|
||
|
(remove-hook 'before-save-hook #'magit-wip-commit-initial-backup)))
|
||
|
|
||
|
(defun magit--any-wip-mode-enabled-p ()
|
||
|
"Return non-nil if any global wip mode is enabled."
|
||
|
(or magit-wip-mode
|
||
|
magit-wip-after-save-mode
|
||
|
magit-wip-after-apply-mode
|
||
|
magit-wip-before-change-mode
|
||
|
magit-wip-initial-backup-mode))
|
||
|
|
||
|
(defvar-local magit-wip-buffer-backed-up nil)
|
||
|
(put 'magit-wip-buffer-backed-up 'permanent-local t)
|
||
|
|
||
|
;;;###autoload
|
||
|
(defun magit-wip-commit-initial-backup ()
|
||
|
"Before saving, commit current file to a worktree wip ref.
|
||
|
|
||
|
The user has to add this function to `before-save-hook'.
|
||
|
|
||
|
Commit the current state of the visited file before saving the
|
||
|
current buffer to that file. This backs up the same version of
|
||
|
the file as `backup-buffer' would, but stores the backup in the
|
||
|
worktree wip ref, which is also used by the various Magit Wip
|
||
|
modes, instead of in a backup file as `backup-buffer' would.
|
||
|
|
||
|
This function ignores the variables that affect `backup-buffer'
|
||
|
and can be used along-side that function, which is recommended
|
||
|
because this function only backs up files that are tracked in
|
||
|
a Git repository."
|
||
|
(when (and (not magit-wip-buffer-backed-up)
|
||
|
buffer-file-name
|
||
|
(magit-inside-worktree-p t)
|
||
|
(magit-file-tracked-p buffer-file-name))
|
||
|
(let ((magit-save-repository-buffers nil))
|
||
|
(magit-wip-commit-buffer-file "autosave %s before save"))
|
||
|
(setq magit-wip-buffer-backed-up t)))
|
||
|
|
||
|
;;; Core
|
||
|
|
||
|
(defun magit-wip-commit (&optional files msg)
|
||
|
"Commit all tracked files to the work-in-progress refs.
|
||
|
|
||
|
Interactively, commit all changes to all tracked files using
|
||
|
a generic commit message. With a prefix-argument the commit
|
||
|
message is read in the minibuffer.
|
||
|
|
||
|
Non-interactively, only commit changes to FILES using MSG as
|
||
|
commit message."
|
||
|
(interactive (list nil (if current-prefix-arg
|
||
|
(magit-read-string "Wip commit message")
|
||
|
"wip-save tracked files")))
|
||
|
(--when-let (magit-wip-get-ref)
|
||
|
(magit-wip-commit-index it files msg)
|
||
|
(magit-wip-commit-worktree it files msg)))
|
||
|
|
||
|
(defun magit-wip-commit-index (ref files msg)
|
||
|
(let* ((wipref (magit--wip-index-ref ref))
|
||
|
(parent (magit-wip-get-parent ref wipref))
|
||
|
(tree (magit-git-string "write-tree")))
|
||
|
(magit-wip-update-wipref ref wipref tree parent files msg "index")))
|
||
|
|
||
|
(defun magit-wip-commit-worktree (ref files msg)
|
||
|
(when (or (not files)
|
||
|
;; `update-index' will either ignore (before Git v2.32.0)
|
||
|
;; or fail when passed directories (relevant for the
|
||
|
;; untracked files code paths).
|
||
|
(setq files (seq-remove #'file-directory-p files)))
|
||
|
(let* ((wipref (magit--wip-wtree-ref ref))
|
||
|
(parent (magit-wip-get-parent ref wipref))
|
||
|
(tree (magit-with-temp-index parent (list "--reset" "-i")
|
||
|
(if files
|
||
|
;; Note: `update-index' is used instead of `add'
|
||
|
;; because `add' will fail if a file is already
|
||
|
;; deleted in the temporary index.
|
||
|
(magit-call-git
|
||
|
"update-index" "--add" "--remove"
|
||
|
(and (magit-git-version>= "2.25.0")
|
||
|
"--ignore-skip-worktree-entries")
|
||
|
"--" files)
|
||
|
(magit-with-toplevel
|
||
|
(magit-call-git "add" "-u" ".")))
|
||
|
(magit-git-string "write-tree"))))
|
||
|
(magit-wip-update-wipref ref wipref tree parent files msg "worktree"))))
|
||
|
|
||
|
(defun magit-wip-update-wipref (ref wipref tree parent files msg start-msg)
|
||
|
(cond
|
||
|
((and (not (equal parent wipref))
|
||
|
(or (not magit-wip-merge-branch)
|
||
|
(not (magit-rev-verify wipref))))
|
||
|
(setq start-msg (concat "start autosaving " start-msg))
|
||
|
(magit-update-ref wipref start-msg
|
||
|
(magit-git-string "commit-tree" "--no-gpg-sign"
|
||
|
"-p" parent "-m" start-msg
|
||
|
(concat parent "^{tree}")))
|
||
|
(setq parent wipref))
|
||
|
((and magit-wip-merge-branch
|
||
|
(or (not (magit-rev-ancestor-p ref wipref))
|
||
|
(not (magit-rev-ancestor-p
|
||
|
(concat (magit-git-string "log" "--format=%H"
|
||
|
"-1" "--merges" wipref)
|
||
|
"^2")
|
||
|
ref))))
|
||
|
(setq start-msg (format "merge %s into %s" ref start-msg))
|
||
|
(magit-update-ref wipref start-msg
|
||
|
(magit-git-string "commit-tree" "--no-gpg-sign"
|
||
|
"-p" wipref "-p" ref
|
||
|
"-m" start-msg
|
||
|
(concat ref "^{tree}")))
|
||
|
(setq parent wipref)))
|
||
|
(when (magit-git-failure "diff-tree" "--quiet" parent tree "--" files)
|
||
|
(unless (and msg (not (= (aref msg 0) ?\s)))
|
||
|
(let ((len (length files)))
|
||
|
(setq msg (concat
|
||
|
(cond ((= len 0) "autosave tracked files")
|
||
|
((> len 1) (format "autosave %s files" len))
|
||
|
(t (concat "autosave "
|
||
|
(file-relative-name (car files)
|
||
|
(magit-toplevel)))))
|
||
|
msg))))
|
||
|
(magit-update-ref wipref msg
|
||
|
(magit-git-string "commit-tree" "--no-gpg-sign"
|
||
|
"-p" parent "-m" msg tree))))
|
||
|
|
||
|
(defun magit-wip-get-ref ()
|
||
|
(let ((ref (or (magit-git-string "symbolic-ref" "HEAD") "HEAD")))
|
||
|
(and (magit-rev-verify ref)
|
||
|
ref)))
|
||
|
|
||
|
(defun magit-wip-get-parent (ref wipref)
|
||
|
(if (and (magit-rev-verify wipref)
|
||
|
(equal (magit-git-string "merge-base" wipref ref)
|
||
|
(magit-rev-verify ref)))
|
||
|
wipref
|
||
|
ref))
|
||
|
|
||
|
(defun magit--wip-index-ref (&optional ref)
|
||
|
(magit--wip-ref "index/" ref))
|
||
|
|
||
|
(defun magit--wip-wtree-ref (&optional ref)
|
||
|
(magit--wip-ref "wtree/" ref))
|
||
|
|
||
|
(defun magit--wip-ref (namespace &optional ref)
|
||
|
(concat magit-wip-namespace namespace
|
||
|
(or (and ref (string-prefix-p "refs/" ref) ref)
|
||
|
(and-let* ((branch (and (not (equal ref "HEAD"))
|
||
|
(or ref (magit-get-current-branch)))))
|
||
|
(concat "refs/heads/" branch))
|
||
|
"HEAD")))
|
||
|
|
||
|
(defun magit-wip-maybe-add-commit-hook ()
|
||
|
(when (and magit-wip-merge-branch
|
||
|
(magit-wip-any-enabled-p))
|
||
|
(add-hook 'git-commit-post-finish-hook #'magit-wip-commit nil t)))
|
||
|
|
||
|
(defun magit-wip-any-enabled-p ()
|
||
|
(or magit-wip-mode
|
||
|
magit-wip-after-save-local-mode
|
||
|
magit-wip-after-save-mode
|
||
|
magit-wip-after-apply-mode
|
||
|
magit-wip-before-change-mode
|
||
|
magit-wip-initial-backup-mode))
|
||
|
|
||
|
;;; Log
|
||
|
|
||
|
(defun magit-wip-log-index (args files)
|
||
|
"Show log for the index wip ref of the current branch."
|
||
|
(interactive (magit-log-arguments))
|
||
|
(magit-log-setup-buffer (list (magit--wip-index-ref)) args files))
|
||
|
|
||
|
(defun magit-wip-log-worktree (args files)
|
||
|
"Show log for the worktree wip ref of the current branch."
|
||
|
(interactive (magit-log-arguments))
|
||
|
(magit-log-setup-buffer (list (magit--wip-wtree-ref)) args files))
|
||
|
|
||
|
(defun magit-wip-log-current (branch args files count)
|
||
|
"Show log for the current branch and its wip refs.
|
||
|
With a negative prefix argument only show the worktree wip ref.
|
||
|
The absolute numeric value of the prefix argument controls how
|
||
|
many \"branches\" of each wip ref are shown."
|
||
|
(interactive
|
||
|
(nconc (list (or (magit-get-current-branch) "HEAD"))
|
||
|
(magit-log-arguments)
|
||
|
(list (prefix-numeric-value current-prefix-arg))))
|
||
|
(magit-wip-log branch args files count))
|
||
|
|
||
|
(defun magit-wip-log (branch args files count)
|
||
|
"Show log for a branch and its wip refs.
|
||
|
With a negative prefix argument only show the worktree wip ref.
|
||
|
The absolute numeric value of the prefix argument controls how
|
||
|
many \"branches\" of each wip ref are shown."
|
||
|
(interactive
|
||
|
(nconc (list (magit-completing-read
|
||
|
"Log branch and its wip refs"
|
||
|
(-snoc (magit-list-local-branch-names) "HEAD")
|
||
|
nil t nil 'magit-revision-history
|
||
|
(or (magit-branch-at-point)
|
||
|
(magit-get-current-branch)
|
||
|
"HEAD")))
|
||
|
(magit-log-arguments)
|
||
|
(list (prefix-numeric-value current-prefix-arg))))
|
||
|
(magit-log-setup-buffer (nconc (list branch)
|
||
|
(magit-wip-log-get-tips
|
||
|
(magit--wip-wtree-ref branch)
|
||
|
(abs count))
|
||
|
(and (>= count 0)
|
||
|
(magit-wip-log-get-tips
|
||
|
(magit--wip-index-ref branch)
|
||
|
(abs count))))
|
||
|
args files))
|
||
|
|
||
|
(defun magit-wip-log-get-tips (wipref count)
|
||
|
(and-let* ((reflog (magit-git-lines "reflog" wipref)))
|
||
|
(let (tips)
|
||
|
(while (and reflog (> count 1))
|
||
|
;; "start autosaving ..." is the current message, but it used
|
||
|
;; to be "restart autosaving ...", and those messages may
|
||
|
;; still be around (e.g., if gc.reflogExpire is to "never").
|
||
|
(setq reflog (cl-member "^[^ ]+ [^:]+: \\(?:re\\)?start autosaving"
|
||
|
reflog :test #'string-match-p))
|
||
|
(when (and (cadr reflog)
|
||
|
(string-match "^[^ ]+ \\([^:]+\\)" (cadr reflog)))
|
||
|
(push (match-string 1 (cadr reflog)) tips))
|
||
|
(setq reflog (cddr reflog))
|
||
|
(cl-decf count))
|
||
|
(cons wipref (nreverse tips)))))
|
||
|
|
||
|
;;; _
|
||
|
(provide 'magit-wip)
|
||
|
;;; magit-wip.el ends here
|