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;;; magit-topgit.el --- topgit plug-in for Magit
;; Copyright (C) 2010 Nathan Weizenbaum
;; Copyright (C) 2010 Yann Hodique
;;
;; 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, 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 <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This plug-in provides topgit functionality as a separate component of Magit
;;; Code:
(require 'magit)
(eval-when-compile
(require 'cl))
(defcustom magit-topgit-executable "tg"
"The name of the TopGit executable."
:group 'magit
:type 'string)
(defcustom magit-topgit-branch-prefix "t/"
"Convention prefix for topic branch creation."
:group 'magit
:type 'string)
(defface magit-topgit-current
'((t :weight bold :inherit magit-branch))
"Face for section titles."
:group 'magit-faces)
;;; Topic branches (using topgit)
(defun magit-topgit-in-topic-p ()
(and (file-exists-p ".topdeps")
(executable-find magit-topgit-executable)))
(defun magit-topgit-create-branch (branch parent)
(when (zerop (or (string-match magit-topgit-branch-prefix branch) -1))
(magit-run* (list magit-topgit-executable "create"
branch (magit-rev-to-git parent))
nil nil nil t)
t))
(defun magit-topgit-pull ()
(when (magit-topgit-in-topic-p)
(magit-run* (list magit-topgit-executable "update")
nil nil nil t)
t))
(defun magit-topgit-push ()
(when (magit-topgit-in-topic-p)
(let* ((branch (or (magit-get-current-branch)
(error "Don't push a detached head. That's gross")))
(remote (magit-get "topgit" "remote"))
(push-remote (if (or current-prefix-arg (not remote))
(magit-read-remote (format "Push %s to" branch))
remote)))
(when (and (not remote)
(not current-prefix-arg))
(magit-set push-remote "topgit" "remote"))
(magit-run magit-topgit-executable "push" "-r" push-remote))
t))
(defun magit-topgit-remote-update (&optional remote)
(when (magit-topgit-in-topic-p)
(let* ((remote (magit-get "topgit" "remote"))
(remote-update (if (or current-prefix-arg (not remote))
(magit-read-remote)
remote)))
(if (and (not remote)
(not current-prefix-arg))
(progn
(magit-set remote-update "topgit" "remote")
(magit-run magit-topgit-executable "remote"
"--populate" remote-update)))
(magit-run magit-topgit-executable "remote" remote-update))
;; We return nil anyway, as we also want regular "git remote update" to
;; happen
nil))
(defun magit-topgit-parse-flags (flags-string)
(let ((flags (string-to-list flags-string))
(void-flag ?\ ))
(list :current (not (eq (nth 0 flags) void-flag))
:empty (not (eq (nth 1 flags) void-flag)))))
(defun magit-topgit-wash-topic ()
(let ((fmt "^\\(.\\{7\\}\\)\\s-\\(\\S-+\\)\\s-+\\(.*\\)"))
(if (search-forward-regexp fmt (line-end-position) t)
(let ((flags (magit-topgit-parse-flags (match-string 1)))
(topic (match-string 2)))
(goto-char (line-beginning-position))
(delete-char 8)
(insert "\t")
(goto-char (line-beginning-position))
(magit-with-section topic 'topic
(magit-set-section-info topic)
(let ((beg (1+ (line-beginning-position)))
(end (line-end-position)))
(when (plist-get flags :current)
(put-text-property beg end 'face 'magit-topgit-current))
(when (plist-get flags :empty)
(put-text-property beg end 'face `(:strike-through t :inherit ,(get-text-property beg 'face)))))
(forward-line)))
(delete-region (line-beginning-position) (1+ (line-end-position))))
t))
(defun magit-topgit-wash-topics ()
(let ((magit-old-top-section nil))
(magit-wash-sequence #'magit-topgit-wash-topic)))
(defun magit-topgit-section (section title washer &rest args)
(when (executable-find magit-topgit-executable)
(let ((magit-git-executable magit-topgit-executable)
(magit-git-standard-options nil))
(apply 'magit-git-section section title washer args))))
(magit-define-inserter topics ()
(magit-topgit-section 'topics
"Topics:" 'magit-topgit-wash-topics
"summary"))
(magit-add-action (item info "discard")
((topic)
(when (yes-or-no-p "Discard topic? ")
(magit-run* (list magit-topgit-executable "delete" "-f" info)
nil nil nil t))))
(magit-add-action (item info "visit")
((topic)
(magit-checkout info)))
(defun magit-topgit-get-top-bases-color (suffix)
(list nil nil))
(defun magit-topgit-get-remote-top-bases-color (suffix)
(when (string-match "^\\(?:[^/]+\\)/top-bases" suffix)
(list nil nil)))
(defconst magit-topgit-ignored-namespace
'("top-bases" magit-topgit-get-top-bases-color))
;;;###autoload
(define-minor-mode magit-topgit-mode "Topgit support for Magit"
:lighter " Topgit" :require 'magit-topgit
(or (derived-mode-p 'magit-mode)
(error "This mode only makes sense with magit"))
(if magit-topgit-mode
(progn
(add-hook 'magit-after-insert-stashes-hook 'magit-insert-topics nil t)
(add-hook 'magit-create-branch-command-hook 'magit-topgit-create-branch nil t)
(add-hook 'magit-pull-command-hook 'magit-topgit-pull nil t)
(add-hook 'magit-remote-update-command-hook 'magit-topgit-remote-update nil t)
(add-hook 'magit-push-command-hook 'magit-topgit-push nil t)
;; hide refs for top-bases namespace in any remote
(add-hook 'magit-log-remotes-color-hook
'magit-topgit-get-remote-top-bases-color)
;; hide refs in the top-bases namespace, as they're not meant for the user
(add-to-list 'magit-refs-namespaces magit-topgit-ignored-namespace))
(progn
(remove-hook 'magit-after-insert-stashes-hook 'magit-insert-topics t)
(remove-hook 'magit-create-branch-command-hook 'magit-topgit-create-branch t)
(remove-hook 'magit-pull-command-hook 'magit-topgit-pull t)
(remove-hook 'magit-remote-update-command-hook 'magit-topgit-remote-update t)
(remove-hook 'magit-push-command-hook 'magit-topgit-push t)
(remove-hook 'magit-log-remotes-color-hook
'magit-topgit-get-remote-top-bases-color)
(delete magit-topgit-ignored-namespace magit-refs-namespaces)))
(when (called-interactively-p 'any)
(magit-refresh)))
;;;###autoload
(defun turn-on-magit-topgit ()
"Unconditionally turn on `magit-topgit-mode'."
(magit-topgit-mode 1))
(provide 'magit-topgit)
;;; magit-topgit.el ends here
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