1 ;; stgit.el: An emacs mode for StGit
3 ;; Copyright (C) 2007 David Kågedal <davidk@lysator.liu.se>
5 ;; To install: put this file on the load-path and place the following
6 ;; in your .emacs file:
10 ;; To start: `M-x stgit'
13 "Manage stgit patches"
14 (interactive "DDirectory: \n")
15 (switch-to-stgit-buffer (git-get-top-dir dir))
18 (defun git-get-top-dir (dir)
19 "Retrieve the top-level directory of a git tree."
20 (let ((cdup (with-output-to-string
21 (with-current-buffer standard-output
23 (unless (eq 0 (call-process "git" nil t nil
24 "rev-parse" "--show-cdup"))
25 (error "cannot find top-level git tree for %s." dir))))))
26 (expand-file-name (concat (file-name-as-directory dir)
27 (car (split-string cdup "\n"))))))
29 (defun switch-to-stgit-buffer (dir)
30 "Switch to a (possibly new) buffer displaying StGit patches for DIR"
31 (setq dir (file-name-as-directory dir))
32 (let ((buffers (buffer-list)))
34 (not (with-current-buffer (car buffers)
35 (and (eq major-mode 'stgit-mode)
36 (string= default-directory dir)))))
37 (setq buffers (cdr buffers)))
38 (switch-to-buffer (if buffers
40 (create-stgit-buffer dir)))))
42 (defun create-stgit-buffer (dir)
43 "Create a buffer for showing StGit patches.
44 Argument DIR is the repository path."
45 (let ((buf (create-file-buffer (concat dir "*stgit*")))
46 (inhibit-read-only t))
47 (with-current-buffer buf
48 (setq default-directory dir)
50 (setq buffer-read-only t))
53 (defmacro stgit-capture-output (name &rest body)
54 "Capture StGit output and show it in a window at the end"
55 `(let ((output-buf (get-buffer-create ,(or name "*StGit output*")))
56 (stgit-dir default-directory)
57 (inhibit-read-only t))
58 (with-current-buffer output-buf
60 (setq default-directory stgit-dir)
61 (setq buffer-read-only t))
62 (let ((standard-output output-buf))
64 (with-current-buffer output-buf
65 (set-buffer-modified-p nil)
66 (setq buffer-read-only t)
67 (if (< (point-min) (point-max))
68 (display-buffer output-buf t)))))
69 (put 'stgit-capture-output 'lisp-indent-function 1)
71 (defun stgit-run (&rest args)
72 (apply 'call-process "stg" nil standard-output nil args))
74 (defun stgit-refresh ()
75 "Update the contents of the stgit buffer"
77 (let ((inhibit-read-only t)
78 (curline (line-number-at-pos))
79 (curpatch (stgit-patch-at-point)))
83 (stgit-run "series" "--description")
86 (stgit-goto-patch curpatch)
87 (goto-line curline))))
89 (defface stgit-description-face
90 '((((background dark)) (:foreground "tan"))
91 (((background light)) (:foreground "dark red")))
92 "The face used for StGit desriptions")
94 (defface stgit-top-patch-face
95 '((((background dark)) (:weight bold :foreground "yellow"))
96 (((background light)) (:weight bold :foreground "purple"))
98 "The face used for the top patch names")
100 (defface stgit-applied-patch-face
101 '((((background dark)) (:foreground "light yellow"))
102 (((background light)) (:foreground "purple"))
104 "The face used for applied patch names")
106 (defface stgit-unapplied-patch-face
107 '((((background dark)) (:foreground "gray80"))
108 (((background light)) (:foreground "orchid"))
110 "The face used for unapplied patch names")
112 (defun stgit-rescan ()
113 "Rescan the status buffer."
116 (goto-char (point-min))
118 (cond ((looking-at "Branch: \\(.*\\)")
119 (put-text-property (match-beginning 1) (match-end 1)
121 ((looking-at "\\([>+-]\\)\\( \\)\\([^ ]+\\) *[|#] \\(.*\\)")
122 (let ((state (match-string 1))
123 (patchsym (intern (match-string 3))))
125 (match-beginning 3) (match-end 3) 'face
126 (cond ((string= state ">") 'stgit-top-patch-face)
127 ((string= state "+") 'stgit-applied-patch-face)
128 ((string= state "-") 'stgit-unapplied-patch-face)))
129 (put-text-property (match-beginning 4) (match-end 4)
130 'face 'stgit-description-face)
131 (when (memq patchsym stgit-marked-patches)
132 (replace-match "*" nil nil nil 2)
133 (setq marked (cons patchsym marked)))))
134 ((or (looking-at "stg series: Branch \".*\" not initialised")
135 (looking-at "stg series: .*: branch not initialized"))
137 (insert "Run M-x stgit-init to initialise")))
139 (setq stgit-marked-patches (nreverse marked)))))
141 (defvar stgit-mode-hook nil
142 "Run after `stgit-mode' is setup.")
144 (defvar stgit-mode-map nil
145 "Keymap for StGit major mode.")
147 (unless stgit-mode-map
148 (setq stgit-mode-map (make-keymap))
149 (suppress-keymap stgit-mode-map)
150 (define-key stgit-mode-map " " 'stgit-mark)
151 (define-key stgit-mode-map "\d" 'stgit-unmark)
152 (define-key stgit-mode-map "?" 'stgit-help)
153 (define-key stgit-mode-map "h" 'stgit-help)
154 (define-key stgit-mode-map "p" 'previous-line)
155 (define-key stgit-mode-map "n" 'next-line)
156 (define-key stgit-mode-map "g" 'stgit-refresh)
157 (define-key stgit-mode-map "r" 'stgit-rename)
158 (define-key stgit-mode-map "e" 'stgit-edit)
159 (define-key stgit-mode-map "c" 'stgit-coalesce)
160 (define-key stgit-mode-map "N" 'stgit-new)
161 (define-key stgit-mode-map "R" 'stgit-repair)
162 (define-key stgit-mode-map "C" 'stgit-commit)
163 (define-key stgit-mode-map "U" 'stgit-uncommit)
164 (define-key stgit-mode-map ">" 'stgit-push-next)
165 (define-key stgit-mode-map "<" 'stgit-pop-next)
166 (define-key stgit-mode-map "P" 'stgit-push-or-pop)
167 (define-key stgit-mode-map "G" 'stgit-goto)
168 (define-key stgit-mode-map "=" 'stgit-show)
169 (define-key stgit-mode-map "D" 'stgit-delete))
172 "Major mode for interacting with StGit.
175 (kill-all-local-variables)
176 (buffer-disable-undo)
177 (setq mode-name "StGit"
178 major-mode 'stgit-mode
180 (use-local-map stgit-mode-map)
181 (set (make-local-variable 'list-buffers-directory) default-directory)
182 (set (make-local-variable 'stgit-marked-patches) nil)
183 (set-variable 'truncate-lines 't)
184 (run-hooks 'stgit-mode-hook))
186 (defun stgit-add-mark (patch)
187 (let ((patchsym (intern patch)))
188 (setq stgit-marked-patches (cons patchsym stgit-marked-patches))))
190 (defun stgit-remove-mark (patch)
191 (let ((patchsym (intern patch)))
192 (setq stgit-marked-patches (delq patchsym stgit-marked-patches))))
194 (defun stgit-marked-patches ()
195 "Return the names of the marked patches."
196 (mapcar 'symbol-name stgit-marked-patches))
198 (defun stgit-patch-at-point ()
199 "Return the patch name on the current line"
202 (if (looking-at "[>+-][ *]\\([^ ]*\\)")
203 (match-string-no-properties 1)
206 (defun stgit-patches-marked-or-at-point ()
207 "Return the names of the marked patches, or the patch on the current line."
208 (if stgit-marked-patches
209 (stgit-marked-patches)
210 (let ((patch (stgit-patch-at-point)))
215 (defun stgit-goto-patch (patch)
216 "Move point to the line containing PATCH"
218 (goto-char (point-min))
219 (if (re-search-forward (concat "^[>+-][ *]" (regexp-quote patch) " ") nil t)
220 (progn (move-to-column goal-column)
228 (stgit-capture-output nil
233 "Mark the patch under point"
235 (let ((patch (stgit-patch-at-point)))
236 (stgit-add-mark patch)
240 (defun stgit-unmark ()
241 "Mark the patch on the previous line"
244 (let ((patch (stgit-patch-at-point)))
245 (stgit-remove-mark patch)
248 (defun stgit-rename (name)
249 "Rename the patch under point"
250 (interactive (list (read-string "Patch name: " (stgit-patch-at-point))))
251 (let ((old-name (stgit-patch-at-point)))
253 (error "No patch on this line"))
254 (stgit-capture-output nil
255 (stgit-run "rename" old-name name))
257 (stgit-goto-patch name)))
259 (defun stgit-repair ()
262 (stgit-capture-output nil
263 (stgit-run "repair"))
266 (defun stgit-commit ()
269 (stgit-capture-output nil (stgit-run "commit"))
272 (defun stgit-uncommit (arg)
273 "Run stg uncommit. Numeric arg determines number of patches to uncommit."
275 (stgit-capture-output nil (stgit-run "uncommit" "-n" (number-to-string arg)))
278 (defun stgit-push-next (npatches)
279 "Push the first unapplied patch.
280 With numeric prefix argument, push that many patches."
282 (stgit-capture-output nil (stgit-run "push" "-n"
283 (number-to-string npatches)))
286 (defun stgit-pop-next (npatches)
287 "Pop the topmost applied patch.
288 With numeric prefix argument, pop that many patches."
290 (stgit-capture-output nil (stgit-run "pop" "-n" (number-to-string npatches)))
293 (defun stgit-applied-at-point ()
294 "Is the patch on the current line applied?"
297 (looking-at "[>+]")))
299 (defun stgit-push-or-pop ()
300 "Push or pop the patch on the current line"
302 (let ((patch (stgit-patch-at-point))
303 (applied (stgit-applied-at-point)))
304 (stgit-capture-output nil
305 (stgit-run (if applied "pop" "push") patch))
309 "Go to the patch on the current line"
311 (let ((patch (stgit-patch-at-point)))
312 (stgit-capture-output nil
313 (stgit-run "goto" patch))
317 "Show the patch on the current line"
319 (stgit-capture-output "*StGit patch*"
320 (stgit-run "show" (stgit-patch-at-point))
321 (with-current-buffer standard-output
322 (goto-char (point-min))
326 "Edit the patch on the current line"
328 (let ((patch (stgit-patch-at-point))
329 (edit-buf (get-buffer-create "*StGit edit*"))
330 (dir default-directory))
331 (log-edit 'stgit-confirm-edit t nil edit-buf)
332 (set (make-local-variable 'stgit-edit-patch) patch)
333 (setq default-directory dir)
334 (let ((standard-output edit-buf))
335 (stgit-run "edit" "--save-template=-" patch))))
337 (defun stgit-confirm-edit ()
339 (let ((file (make-temp-file "stgit-edit-")))
340 (write-region (point-min) (point-max) file)
341 (stgit-capture-output nil
342 (stgit-run "edit" "-f" file stgit-edit-patch))
343 (with-current-buffer log-edit-parent-buffer
349 (let ((edit-buf (get-buffer-create "*StGit edit*")))
350 (log-edit 'stgit-confirm-new t nil edit-buf)))
352 (defun stgit-confirm-new ()
354 (let ((file (make-temp-file "stgit-edit-")))
355 (write-region (point-min) (point-max) file)
356 (stgit-capture-output nil
357 (stgit-run "new" "-f" file))
358 (with-current-buffer log-edit-parent-buffer
361 (defun stgit-create-patch-name (description)
362 "Create a patch name from a long description"
364 (while (> (length description) 0)
365 (cond ((string-match "\\`[a-zA-Z_-]+" description)
366 (setq patch (downcase (concat patch (match-string 0 description))))
367 (setq description (substring description (match-end 0))))
368 ((string-match "\\` +" description)
369 (setq patch (concat patch "-"))
370 (setq description (substring description (match-end 0))))
371 ((string-match "\\`[^a-zA-Z_-]+" description)
372 (setq description (substring description (match-end 0))))))
373 (cond ((= (length patch) 0)
375 ((> (length patch) 20)
376 (substring patch 0 20))
379 (defun stgit-delete (patch-names)
380 "Delete the named patches"
381 (interactive (list (stgit-patches-marked-or-at-point)))
382 (if (zerop (length patch-names))
383 (error "No patches to delete")
384 (when (yes-or-no-p (format "Really delete %d patches? "
385 (length patch-names)))
386 (stgit-capture-output nil
387 (apply 'stgit-run "delete" patch-names))
390 (defun stgit-coalesce (patch-names)
391 "Run stg coalesce on the named patches"
392 (interactive (list (stgit-marked-patches)))
393 (let ((edit-buf (get-buffer-create "*StGit edit*"))
394 (dir default-directory))
395 (log-edit 'stgit-confirm-coalesce t nil edit-buf)
396 (set (make-local-variable 'stgit-patches) patch-names)
397 (setq default-directory dir)
398 (let ((standard-output edit-buf))
399 (apply 'stgit-run "coalesce" "--save-template=-" patch-names))))
401 (defun stgit-confirm-coalesce ()
403 (let ((file (make-temp-file "stgit-edit-")))
404 (write-region (point-min) (point-max) file)
405 (stgit-capture-output nil
406 (apply 'stgit-run "coalesce" "-f" file stgit-patches))
407 (with-current-buffer log-edit-parent-buffer
411 "Display help for the StGit mode."
413 (describe-function 'stgit-mode))