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;;; magit-svn.el --- git-svn plug-in for Magit
;; Copyright (C) 2008 Alex Ott
;; Copyright (C) 2009 Alexey Voinov
;; Copyright (C) 2009 John Wiegley
;; Copyright (C) 2008 Linh Dang
;; Copyright (C) 2008 Marcin Bachry
;; Copyright (C) 2008, 2009 Marius Vollmer
;; 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 git-svn functionality as a separate component of Magit
;;; Code:
(require 'magit)
(eval-when-compile
(require 'cl))
;; git svn commands
(defun magit-svn-find-rev (rev &optional branch)
(interactive
(list (read-string "SVN revision: ")
(if current-prefix-arg
(read-string "In branch: "))))
(let* ((sha (apply 'magit-git-string
`("svn"
"find-rev"
,(concat "r" rev)
,@(when branch (list branch))))))
(if sha
(magit-show-commit
(magit-with-section sha 'commit
(magit-set-section-info sha)
sha))
(error "Revision %s could not be mapped to a commit" rev))))
(defun magit-svn-create-branch (name)
(interactive "sBranch name: ")
(magit-run-git "svn" "branch" name))
(defun magit-svn-rebase ()
(interactive)
(magit-run-git-async "svn" "rebase"))
(defun magit-svn-dcommit ()
(interactive)
(magit-run-git-async "svn" "dcommit"))
(defun magit-svn-enabled ()
(not (null (magit-svn-get-ref-info t))))
(defun magit-svn-expand-braces-in-branches (branch)
(if (not (string-match "\\(.+\\){\\(.+,.+\\)}\\(.*\\):\\(.*\\)\\\*" branch))
(list branch)
(let ((prefix (match-string 1 branch))
(suffix (match-string 3 branch))
(rhs (match-string 4 branch))
(pieces (split-string (match-string 2 branch) ",")))
(mapcar (lambda (p) (concat prefix p suffix ":" rhs p)) pieces))))
(defun magit-svn-get-local-ref (url)
(let* ((branches (cons (magit-get "svn-remote" "svn" "fetch")
(magit-get-all "svn-remote" "svn" "branches")))
(branches (apply 'nconc
(mapcar 'magit-svn-expand-braces-in-branches
branches)))
(base-url (magit-get "svn-remote" "svn" "url"))
(result nil))
(while branches
(let* ((pats (split-string (pop branches) ":"))
(src (replace-regexp-in-string "\\*" "\\\\(.*\\\\)" (car pats)))
(dst (replace-regexp-in-string "\\*" "\\\\1" (cadr pats)))
(base-url (replace-regexp-in-string "\\+" "\\\\+" base-url))
(base-url (replace-regexp-in-string "//.+@" "//" base-url))
(pat1 (concat "^" src "$"))
(pat2 (cond ((equal src "") (concat "^" base-url "$"))
(t (concat "^" base-url "/" src "$")))))
(cond ((string-match pat1 url)
(setq result (replace-match dst nil nil url))
(setq branches nil))
((string-match pat2 url)
(setq result (replace-match dst nil nil url))
(setq branches nil)))))
result))
(defvar magit-svn-get-ref-info-cache nil
"A cache for svn-ref-info.
As `magit-get-svn-ref-info' might be considered a quite
expensive operation a cache is taken so that `magit-status'
doesn't repeatedly call it.")
(defun magit-svn-get-ref-info (&optional use-cache)
"Gather details about the current git-svn repository.
Return nil if there isn't one. Keys of the alist are ref-path,
trunk-ref-name and local-ref-name.
If USE-CACHE is non-nil then return the value of `magit-get-svn-ref-info-cache'."
(if (and use-cache magit-svn-get-ref-info-cache)
magit-svn-get-ref-info-cache
(let* ((fetch (magit-get "svn-remote" "svn" "fetch"))
(url)
(revision))
(when fetch
(let* ((ref (cadr (split-string fetch ":")))
(ref-path (file-name-directory ref))
(trunk-ref-name (file-name-nondirectory ref)))
(set (make-local-variable
'magit-svn-get-ref-info-cache)
(list
(cons 'ref-path ref-path)
(cons 'trunk-ref-name trunk-ref-name)
;; get the local ref from the log. This is actually
;; the way that git-svn does it.
(cons 'local-ref
(with-temp-buffer
(insert (or (magit-git-string "log" "--first-parent"
"--grep" "git-svn" "-1")
""))
(goto-char (point-min))
(cond ((re-search-forward "git-svn-id: \\(.+/.+?\\)@\\([0-9]+\\)" nil t)
(setq url (match-string 1)
revision (match-string 2))
(magit-svn-get-local-ref url))
(t
(setq url (magit-get "svn-remote" "svn" "url"))
nil))))
(cons 'revision revision)
(cons 'url url))))))))
(defun magit-svn-get-ref (&optional use-cache)
"Get the best guess remote ref for the current git-svn based branch.
If USE-CACHE is non nil, use the cached information."
(let ((info (magit-svn-get-ref-info use-cache)))
(cdr (assoc 'local-ref info))))
(magit-define-inserter svn-unpulled (&optional use-cache)
(when (magit-svn-enabled)
(apply #'magit-git-section
'svn-unpulled "Unpulled commits (SVN):" 'magit-wash-log "log"
(append magit-git-log-options
(list
(format "HEAD..%s" (magit-svn-get-ref use-cache)))))))
(magit-define-inserter svn-unpushed (&optional use-cache)
(when (magit-svn-enabled)
(apply #'magit-git-section
'svn-unpushed "Unpushed commits (SVN):" 'magit-wash-log "log"
(append magit-git-log-options
(list
(format "%s..HEAD" (magit-svn-get-ref use-cache)))))))
(magit-define-section-jumper svn-unpushed "Unpushed commits (SVN)")
(defun magit-svn-remote-string ()
(let ((svn-info (magit-svn-get-ref-info)))
(when svn-info
(concat (cdr (assoc 'url svn-info))
" @ "
(cdr (assoc 'revision svn-info))))))
(defun magit-svn-remote-update ()
(interactive)
(when (magit-svn-enabled)
(magit-run-git-async "svn" "fetch")))
(easy-menu-define magit-svn-extension-menu
nil
"Git SVN extension menu"
'("Git SVN"
:visible magit-svn-mode
["Create branch" magit-svn-create-branch (magit-svn-enabled)]
["Rebase" magit-svn-rebase (magit-svn-enabled)]
["Fetch" magit-svn-remote-update (magit-svn-enabled)]
["Commit" magit-svn-dcommit (magit-svn-enabled)]))
(easy-menu-add-item 'magit-mode-menu
'("Extensions")
magit-svn-extension-menu)
;; add the group and its keys
(progn
;; (re-)create the group
(magit-key-mode-add-group 'svn)
(magit-key-mode-insert-action 'svn "r" "Rebase" 'magit-svn-rebase)
(magit-key-mode-insert-action 'svn "c" "DCommit" 'magit-svn-dcommit)
(magit-key-mode-insert-action 'svn "f" "Fetch" 'magit-svn-remote-update)
(magit-key-mode-insert-action 'svn "s" "Find rev" 'magit-svn-find-rev)
(magit-key-mode-insert-action 'svn "B" "Create branch" 'magit-svn-create-branch)
;; generate and bind the menu popup function
(magit-key-mode-generate 'svn))
(defvar magit-svn-mode-map
(let ((map (make-sparse-keymap)))
(define-key map (kbd "N") 'magit-key-mode-popup-svn)
map))
;;;###autoload
(define-minor-mode magit-svn-mode "SVN support for Magit"
:lighter " SVN" :require 'magit-svn :keymap 'magit-svn-mode-map
(or (derived-mode-p 'magit-mode)
(error "This mode only makes sense with magit"))
(let ((unpulled-hook (lambda () (magit-insert-svn-unpulled t)))
(unpushed-hook (lambda () (magit-insert-svn-unpushed t)))
(remote-hook 'magit-svn-remote-string))
(if magit-svn-mode
(progn
(add-hook 'magit-after-insert-unpulled-commits-hook unpulled-hook nil t)
(add-hook 'magit-after-insert-unpushed-commits-hook unpushed-hook nil t)
(add-hook 'magit-remote-string-hook remote-hook nil t))
(progn
(remove-hook 'magit-after-insert-unpulled-commits-hook unpulled-hook t)
(remove-hook 'magit-after-insert-unpushed-commits-hook unpushed-hook t)
(remove-hook 'magit-remote-string-hook remote-hook t)))
(when (called-interactively-p 'any)
(magit-refresh))))
;;;###autoload
(defun turn-on-magit-svn ()
"Unconditionally turn on `magit-svn-mode'."
(magit-svn-mode 1))
(provide 'magit-svn)
;;; magit-svn.el ends here
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