mdw@git.distorted.org.uk Git - stgit/blob - contrib/stgit.el

   1 ;; stgit.el: An emacs mode for StGit
   2 ;;
   3 ;; Copyright (C) 2007 David Kågedal <davidk@lysator.liu.se>
   4 ;;
   5 ;; To install: put this file on the load-path and place the following
   6 ;; in your .emacs file:
   7 ;;
   8 ;;    (require 'stgit)
   9 ;;
  10 ;; To start: `M-x stgit'
  11
  12 (when (< emacs-major-version 22)
  13   (error "Emacs older than 22 is not supported by stgit.el"))
  14
  15 (require 'git nil t)
  16 (require 'cl)
  17 (require 'ewoc)
  18 (require 'easymenu)
  19
  20 (defun stgit (dir)
  21   "Manage StGit patches for the tree in DIR.
  22
  23 See `stgit-mode' for commands available."
  24   (interactive "DDirectory: \n")
  25   (switch-to-stgit-buffer (git-get-top-dir dir))
  26   (stgit-reload))
  27
  28 (defun stgit-assert-mode ()
  29   "Signal an error if not in an StGit buffer."
  30   (assert (derived-mode-p 'stgit-mode) nil "Not an StGit buffer"))
  31
  32 (unless (fboundp 'git-get-top-dir)
  33   (defun git-get-top-dir (dir)
  34     "Retrieve the top-level directory of a git tree."
  35     (let ((cdup (with-output-to-string
  36                   (with-current-buffer standard-output
  37                     (cd dir)
  38                     (unless (eq 0 (call-process "git" nil t nil
  39                                                 "rev-parse" "--show-cdup"))
  40                       (error "Cannot find top-level git tree for %s" dir))))))
  41       (expand-file-name (concat (file-name-as-directory dir)
  42                                 (car (split-string cdup "\n")))))))
  43
  44 (defun stgit-refresh-git-status (&optional dir)
  45   "If it exists, refresh the `git-status' buffer belonging to
  46 directory DIR or `default-directory'"
  47   (when (and (fboundp 'git-find-status-buffer)
  48              (fboundp 'git-refresh-status))
  49     (let* ((top-dir (git-get-top-dir (or dir default-directory)))
  50            (git-status-buffer (and top-dir (git-find-status-buffer top-dir))))
  51       (when git-status-buffer
  52         (with-current-buffer git-status-buffer
  53           (git-refresh-status))))))
  54
  55 (defun stgit-find-buffer (dir)
  56   "Return the buffer displaying StGit patches for DIR, or nil if none."
  57   (setq dir (file-name-as-directory dir))
  58   (let ((buffers (buffer-list)))
  59     (while (and buffers
  60                 (not (with-current-buffer (car buffers)
  61                        (and (eq major-mode 'stgit-mode)
  62                             (string= default-directory dir)))))
  63       (setq buffers (cdr buffers)))
  64     (and buffers (car buffers))))
  65
  66 (defun switch-to-stgit-buffer (dir)
  67   "Switch to a (possibly new) buffer displaying StGit patches for DIR."
  68   (setq dir (file-name-as-directory dir))
  69   (let ((buffer (stgit-find-buffer dir)))
  70     (switch-to-buffer (or buffer
  71                           (create-stgit-buffer dir)))))
  72
  73 (defstruct (stgit-patch)
  74   status name desc empty files-ewoc)
  75
  76 (defun stgit-patch-pp (patch)
  77   (let* ((status (stgit-patch-status patch))
  78          (start (point))
  79          (name (stgit-patch-name patch))
  80          (face (cdr (assq status stgit-patch-status-face-alist))))
  81     (insert (case status
  82               ('applied "+")
  83               ('top ">")
  84               ('unapplied "-")
  85               (t " "))
  86             (if (memq name stgit-marked-patches)
  87                 "*" " "))
  88     (if (memq status '(index work))
  89         (insert (propertize (if (eq status 'index) "Index" "Work tree")
  90                             'face face))
  91       (insert (format "%-30s"
  92                       (propertize (symbol-name name)
  93                                   'face face
  94                                   'syntax-table (string-to-syntax "w")))
  95               "  "
  96               (if (stgit-patch-empty patch) "(empty) " "")
  97               (propertize (or (stgit-patch-desc patch) "")
  98                           'face 'stgit-description-face)))
  99     (insert "\n")
 100     (put-text-property start (point) 'entry-type 'patch)
 101     (when (memq name stgit-expanded-patches)
 102       (stgit-insert-patch-files patch))
 103     (put-text-property start (point) 'patch-data patch)))
 104
 105 (defun create-stgit-buffer (dir)
 106   "Create a buffer for showing StGit patches.
 107 Argument DIR is the repository path."
 108   (let ((buf (create-file-buffer (concat dir "*stgit*")))
 109         (inhibit-read-only t))
 110     (with-current-buffer buf
 111       (setq default-directory dir)
 112       (stgit-mode)
 113       (set (make-local-variable 'stgit-ewoc)
 114            (ewoc-create #'stgit-patch-pp "Branch:\n\n" "--\n" t))
 115       (setq buffer-read-only t))
 116     buf))
 117
 118 (defmacro stgit-capture-output (name &rest body)
 119   "Capture StGit output and, if there was any output, show it in a window
 120 at the end.
 121 Returns nil if there was no output."
 122   (declare (debug ([&or stringp null] body))
 123            (indent 1))
 124   `(let ((output-buf (get-buffer-create ,(or name "*StGit output*")))
 125          (stgit-dir default-directory)
 126          (inhibit-read-only t))
 127      (with-current-buffer output-buf
 128        (erase-buffer)
 129        (setq default-directory stgit-dir)
 130        (setq buffer-read-only t))
 131      (let ((standard-output output-buf))
 132        ,@body)
 133      (with-current-buffer output-buf
 134        (set-buffer-modified-p nil)
 135        (setq buffer-read-only t)
 136        (if (< (point-min) (point-max))
 137            (display-buffer output-buf t)))))
 138
 139 (defun stgit-make-run-args (args)
 140   "Return a copy of ARGS with its elements converted to strings."
 141   (mapcar (lambda (x)
 142             ;; don't use (format "%s" ...) to limit type errors
 143             (cond ((stringp x) x)
 144                   ((integerp x) (number-to-string x))
 145                   ((symbolp x) (symbol-name x))
 146                   (t
 147                    (error "Bad element in stgit-make-run-args args: %S" x))))
 148           args))
 149
 150 (defun stgit-run-silent (&rest args)
 151   (setq args (stgit-make-run-args args))
 152   (apply 'call-process "stg" nil standard-output nil args))
 153
 154 (defun stgit-run (&rest args)
 155   (setq args (stgit-make-run-args args))
 156   (let ((msgcmd (mapconcat #'identity args " ")))
 157     (message "Running stg %s..." msgcmd)
 158     (apply 'call-process "stg" nil standard-output nil args)
 159     (message "Running stg %s...done" msgcmd)))
 160
 161 (defun stgit-run-git (&rest args)
 162   (setq args (stgit-make-run-args args))
 163   (let ((msgcmd (mapconcat #'identity args " ")))
 164     (message "Running git %s..." msgcmd)
 165     (apply 'call-process "git" nil standard-output nil args)
 166     (message "Running git %s...done" msgcmd)))
 167
 168 (defun stgit-run-git-silent (&rest args)
 169   (setq args (stgit-make-run-args args))
 170   (apply 'call-process "git" nil standard-output nil args))
 171
 172 (defun stgit-index-empty-p ()
 173   "Returns non-nil if the index contains no changes from HEAD."
 174   (zerop (stgit-run-git-silent "diff-index" "--cached" "--quiet" "HEAD")))
 175
 176 (defun stgit-work-tree-empty-p ()
 177   "Returns non-nil if the work tree contains no changes from index."
 178   (zerop (stgit-run-git-silent "diff-files" "--quiet")))
 179
 180 (defvar stgit-index-node)
 181 (defvar stgit-worktree-node)
 182
 183 (defun stgit-refresh-index ()
 184   (when stgit-index-node
 185     (ewoc-invalidate (car stgit-index-node) (cdr stgit-index-node))))
 186
 187 (defun stgit-refresh-worktree ()
 188   (when stgit-worktree-node
 189     (ewoc-invalidate (car stgit-worktree-node) (cdr stgit-worktree-node))))
 190
 191 (defun stgit-run-series-insert-index (ewoc)
 192   (setq index-node    (cons ewoc (ewoc-enter-last ewoc
 193                                                   (make-stgit-patch
 194                                                    :status 'index
 195                                                    :name :index
 196                                                    :desc nil
 197                                                    :empty nil)))
 198         worktree-node (cons ewoc (ewoc-enter-last ewoc
 199                                                   (make-stgit-patch
 200                                                    :status 'work
 201                                                    :name :work
 202                                                    :desc nil
 203                                                    :empty nil)))))
 204
 205 (defun stgit-run-series (ewoc)
 206   (setq stgit-index-node nil
 207         stgit-worktree-node nil)
 208   (let ((inserted-index (not stgit-show-worktree))
 209         index-node
 210         worktree-node
 211         all-patchsyms)
 212     (with-temp-buffer
 213       (let* ((standard-output (current-buffer))
 214              (exit-status (stgit-run-silent "series"
 215                                             "--description" "--empty")))
 216         (goto-char (point-min))
 217         (if (not (zerop exit-status))
 218             (cond ((looking-at "stg series: \\(.*\\)")
 219                    (setq inserted-index t)
 220                    (ewoc-set-hf ewoc (car (ewoc-get-hf ewoc))
 221                                 (substitute-command-keys
 222                                  "-- not initialized; run \\[stgit-init]")))
 223                   ((looking-at ".*")
 224                    (error "Error running stg: %s"
 225                           (match-string 0))))
 226           (while (not (eobp))
 227             (unless (looking-at
 228                      "\\([0 ]\\)\\([>+-]\\)\\( \\)\\([^ ]+\\) *[|#] \\(.*\\)")
 229               (error "Syntax error in output from stg series"))
 230             (let* ((state-str (match-string 2))
 231                    (state (cond ((string= state-str ">") 'top)
 232                                 ((string= state-str "+") 'applied)
 233                                 ((string= state-str "-") 'unapplied)))
 234                    (name (intern (match-string 4)))
 235                    (desc (match-string 5))
 236                    (empty (string= (match-string 1) "0")))
 237               (unless inserted-index
 238                 (when (or (eq stgit-show-worktree-mode 'top)
 239                           (and (eq stgit-show-worktree-mode 'center)
 240                                (eq state 'unapplied)))
 241                   (setq inserted-index t)
 242                   (stgit-run-series-insert-index ewoc)))
 243               (setq all-patchsyms (cons name all-patchsyms))
 244               (ewoc-enter-last ewoc
 245                                (make-stgit-patch
 246                                 :status state
 247                                 :name   name
 248                                 :desc   desc
 249                                 :empty  empty)))
 250             (forward-line 1))))
 251       (unless inserted-index
 252         (stgit-run-series-insert-index ewoc)))
 253     (setq stgit-index-node    index-node
 254           stgit-worktree-node worktree-node
 255           stgit-marked-patches (intersection stgit-marked-patches
 256                                              all-patchsyms))))
 257
 258 (defun stgit-reload ()
 259   "Update the contents of the StGit buffer."
 260   (interactive)
 261   (stgit-assert-mode)
 262   (let ((inhibit-read-only t)
 263         (curline (line-number-at-pos))
 264         (curpatch (stgit-patch-name-at-point))
 265         (curfile (stgit-patched-file-at-point)))
 266     (ewoc-filter stgit-ewoc #'(lambda (x) nil))
 267     (ewoc-set-hf stgit-ewoc
 268                  (concat "Branch: "
 269                          (propertize
 270                           (substring (with-output-to-string
 271                                        (stgit-run-silent "branch"))
 272                                      0 -1)
 273                           'face 'stgit-branch-name-face)
 274                          "\n\n")
 275                  (if stgit-show-worktree
 276                      "--"
 277                    (propertize
 278                     (substitute-command-keys "--\n\"\\[stgit-toggle-worktree]\"\
 279  shows the working tree\n")
 280                     'face 'stgit-description-face)))
 281     (stgit-run-series stgit-ewoc)
 282     (if curpatch
 283         (stgit-goto-patch curpatch (and curfile (stgit-file-file curfile)))
 284       (goto-line curline)))
 285   (stgit-refresh-git-status))
 286
 287 (defun stgit-set-default (symbol value)
 288   "Set default value of SYMBOL to VALUE using `set-default' and
 289 reload all StGit buffers."
 290   (set-default symbol value)
 291   (dolist (buf (buffer-list))
 292     (with-current-buffer buf
 293       (when (eq major-mode 'stgit-mode)
 294         (stgit-reload)))))
 295
 296 (defgroup stgit nil
 297   "A user interface for the StGit patch maintenance tool."
 298   :group 'tools
 299   :link '(function-link stgit)
 300   :link '(url-link "http://www.procode.org/stgit/"))
 301
 302 (defcustom stgit-abbreviate-copies-and-renames t
 303   "If non-nil, abbreviate copies and renames as \"dir/{old -> new}/file\"
 304 instead of \"dir/old/file -> dir/new/file\"."
 305   :type 'boolean
 306   :group 'stgit
 307   :set 'stgit-set-default)
 308
 309 (defcustom stgit-default-show-worktree t
 310   "Set to non-nil to by default show the working tree in a new stgit buffer.
 311
 312 Use \\<stgit-mode-map>\\[stgit-toggle-worktree] to toggle the this setting in an already-started StGit buffer."
 313   :type 'boolean
 314   :group 'stgit
 315   :link '(variable-link stgit-show-worktree))
 316
 317 (defcustom stgit-find-copies-harder nil
 318   "Try harder to find copied files when listing patches.
 319
 320 When not nil, runs git diff-tree with the --find-copies-harder
 321 flag, which reduces performance."
 322   :type 'boolean
 323   :group 'stgit
 324   :set 'stgit-set-default)
 325
 326 (defcustom stgit-show-worktree-mode 'center
 327   "This variable controls where the \"Index\" and \"Work tree\"
 328 will be shown on in the buffer.
 329
 330 It can be set to 'top (above all patches), 'center (show between
 331 applied and unapplied patches), and 'bottom (below all patches)."
 332   :type '(radio (const :tag "above all patches (top)" top)
 333                 (const :tag "between applied and unapplied patches (center)"
 334                        center)
 335                 (const :tag "below all patches (bottom)" bottom))
 336   :group 'stgit
 337   :link '(variable-link stgit-show-worktree)
 338   :set 'stgit-set-default)
 339
 340 (defface stgit-branch-name-face
 341   '((t :inherit bold))
 342   "The face used for the StGit branch name"
 343   :group 'stgit)
 344
 345 (defface stgit-top-patch-face
 346   '((((background dark)) (:weight bold :foreground "yellow"))
 347     (((background light)) (:weight bold :foreground "purple"))
 348     (t (:weight bold)))
 349   "The face used for the top patch names"
 350   :group 'stgit)
 351
 352 (defface stgit-applied-patch-face
 353   '((((background dark)) (:foreground "light yellow"))
 354     (((background light)) (:foreground "purple"))
 355     (t ()))
 356   "The face used for applied patch names"
 357   :group 'stgit)
 358
 359 (defface stgit-unapplied-patch-face
 360   '((((background dark)) (:foreground "gray80"))
 361     (((background light)) (:foreground "orchid"))
 362     (t ()))
 363   "The face used for unapplied patch names"
 364   :group 'stgit)
 365
 366 (defface stgit-description-face
 367   '((((background dark)) (:foreground "tan"))
 368     (((background light)) (:foreground "dark red")))
 369   "The face used for StGit descriptions"
 370   :group 'stgit)
 371
 372 (defface stgit-index-work-tree-title-face
 373   '((((supports :slant italic)) :slant italic)
 374     (t :inherit bold))
 375   "StGit mode face used for the \"Index\" and \"Work tree\" titles"
 376   :group 'stgit)
 377
 378 (defface stgit-unmerged-file-face
 379   '((((class color) (background light)) (:foreground "red" :bold t))
 380     (((class color) (background dark)) (:foreground "red" :bold t)))
 381   "StGit mode face used for unmerged file status"
 382   :group 'stgit)
 383
 384 (defface stgit-unknown-file-face
 385   '((((class color) (background light)) (:foreground "goldenrod" :bold t))
 386     (((class color) (background dark)) (:foreground "goldenrod" :bold t)))
 387   "StGit mode face used for unknown file status"
 388   :group 'stgit)
 389
 390 (defface stgit-ignored-file-face
 391   '((((class color) (background light)) (:foreground "grey60"))
 392     (((class color) (background dark)) (:foreground "grey40")))
 393   "StGit mode face used for ignored files")
 394
 395 (defface stgit-file-permission-face
 396   '((((class color) (background light)) (:foreground "green" :bold t))
 397     (((class color) (background dark)) (:foreground "green" :bold t)))
 398   "StGit mode face used for permission changes."
 399   :group 'stgit)
 400
 401 (defface stgit-modified-file-face
 402   '((((class color) (background light)) (:foreground "purple"))
 403     (((class color) (background dark)) (:foreground "salmon")))
 404   "StGit mode face used for modified file status"
 405   :group 'stgit)
 406
 407 (defconst stgit-file-status-code-strings
 408   (mapcar (lambda (arg)
 409             (cons (car arg)
 410                   (propertize (cadr arg) 'face (car (cddr arg)))))
 411           '((add         "Added"       stgit-modified-file-face)
 412             (copy        "Copied"      stgit-modified-file-face)
 413             (delete      "Deleted"     stgit-modified-file-face)
 414             (modify      "Modified"    stgit-modified-file-face)
 415             (rename      "Renamed"     stgit-modified-file-face)
 416             (mode-change "Mode change" stgit-modified-file-face)
 417             (unmerged    "Unmerged"    stgit-unmerged-file-face)
 418             (unknown     "Unknown"     stgit-unknown-file-face)
 419             (ignore      "Ignored"     stgit-ignored-file-face)))
 420   "Alist of code symbols to description strings")
 421
 422 (defconst stgit-patch-status-face-alist
 423   '((applied   . stgit-applied-patch-face)
 424     (top       . stgit-top-patch-face)
 425     (unapplied . stgit-unapplied-patch-face)
 426     (index     . stgit-index-work-tree-title-face)
 427     (work      . stgit-index-work-tree-title-face))
 428   "Alist of face to use for a given patch status")
 429
 430 (defun stgit-file-status-code-as-string (file)
 431   "Return stgit status code for FILE as a string"
 432   (let* ((code (assq (stgit-file-status file)
 433                      stgit-file-status-code-strings))
 434          (score (stgit-file-cr-score file)))
 435     (when code
 436       (format "%-11s  "
 437               (if (and score (/= score 100))
 438                   (format "%s %s" (cdr code)
 439                           (propertize (format "%d%%" score)
 440                                       'face 'stgit-description-face))
 441                 (cdr code))))))
 442
 443 (defun stgit-file-status-code (str &optional score)
 444   "Return stgit status code from git status string"
 445   (let ((code (assoc str '(("A" . add)
 446                            ("C" . copy)
 447                            ("D" . delete)
 448                            ("I" . ignore)
 449                            ("M" . modify)
 450                            ("R" . rename)
 451                            ("T" . mode-change)
 452                            ("U" . unmerged)
 453                            ("X" . unknown)))))
 454     (setq code (if code (cdr code) 'unknown))
 455     (when (stringp score)
 456       (if (> (length score) 0)
 457           (setq score (string-to-number score))
 458         (setq score nil)))
 459     (if score (cons code score) code)))
 460
 461 (defconst stgit-file-type-strings
 462   '((#o100 . "file")
 463     (#o120 . "symlink")
 464     (#o160 . "subproject"))
 465   "Alist of names of file types")
 466
 467 (defun stgit-file-type-string (type)
 468   "Return string describing file type TYPE (the high bits of file permission).
 469 Cf. `stgit-file-type-strings' and `stgit-file-type-change-string'."
 470   (let ((type-str (assoc type stgit-file-type-strings)))
 471     (or (and type-str (cdr type-str))
 472         (format "unknown type %o" type))))
 473
 474 (defun stgit-file-type-change-string (old-perm new-perm)
 475   "Return string describing file type change from OLD-PERM to NEW-PERM.
 476 Cf. `stgit-file-type-string'."
 477   (let ((old-type (lsh old-perm -9))
 478         (new-type (lsh new-perm -9)))
 479     (cond ((= old-type new-type) "")
 480           ((zerop new-type) "")
 481           ((zerop old-type)
 482            (if (= new-type #o100)
 483                ""
 484              (format "   (%s)" (stgit-file-type-string new-type))))
 485           (t (format "   (%s -> %s)"
 486                      (stgit-file-type-string old-type)
 487                      (stgit-file-type-string new-type))))))
 488
 489 (defun stgit-file-mode-change-string (old-perm new-perm)
 490   "Return string describing file mode change from OLD-PERM to NEW-PERM.
 491 Cf. `stgit-file-type-change-string'."
 492   (setq old-perm (logand old-perm #o777)
 493         new-perm (logand new-perm #o777))
 494   (if (or (= old-perm new-perm)
 495           (zerop old-perm)
 496           (zerop new-perm))
 497       ""
 498     (let* ((modified       (logxor old-perm new-perm))
 499            (not-x-modified (logand (logxor old-perm new-perm) #o666)))
 500       (cond ((zerop modified) "")
 501             ((and (zerop not-x-modified)
 502                   (or (and (eq #o111 (logand old-perm #o111))
 503                            (propertize "-x" 'face 'stgit-file-permission-face))
 504                       (and (eq #o111 (logand new-perm #o111))
 505                            (propertize "+x" 'face
 506                                        'stgit-file-permission-face)))))
 507             (t (concat (propertize (format "%o" old-perm)
 508                                    'face 'stgit-file-permission-face)
 509                        (propertize " -> "
 510                                    'face 'stgit-description-face)
 511                        (propertize (format "%o" new-perm)
 512                                    'face 'stgit-file-permission-face)))))))
 513
 514 (defstruct (stgit-file)
 515   old-perm new-perm copy-or-rename cr-score cr-from cr-to status file)
 516
 517 (defun stgit-describe-copy-or-rename (file)
 518   (let ((arrow (concat " " (propertize "->" 'face 'stgit-description-face) " "))
 519         from to common-head common-tail)
 520
 521     (when stgit-abbreviate-copies-and-renames
 522       (setq from (split-string (stgit-file-cr-from file) "/")
 523             to   (split-string (stgit-file-cr-to   file) "/"))
 524
 525       (while (and from to (cdr from) (cdr to)
 526                   (string-equal (car from) (car to)))
 527         (setq common-head (cons (car from) common-head)
 528               from        (cdr from)
 529               to          (cdr to)))
 530       (setq common-head (nreverse common-head)
 531             from        (nreverse from)
 532             to          (nreverse to))
 533       (while (and from to (cdr from) (cdr to)
 534                   (string-equal (car from) (car to)))
 535         (setq common-tail (cons (car from) common-tail)
 536               from        (cdr from)
 537               to          (cdr to)))
 538       (setq from (nreverse from)
 539             to   (nreverse to)))
 540
 541     (if (or common-head common-tail)
 542         (concat (if common-head
 543                     (mapconcat #'identity common-head "/")
 544                   "")
 545                 (if common-head "/" "")
 546                 (propertize "{" 'face 'stgit-description-face)
 547                 (mapconcat #'identity from "/")
 548                 arrow
 549                 (mapconcat #'identity to "/")
 550                 (propertize "}" 'face 'stgit-description-face)
 551                 (if common-tail "/" "")
 552                 (if common-tail
 553                     (mapconcat #'identity common-tail "/")
 554                   ""))
 555       (concat (stgit-file-cr-from file) arrow (stgit-file-cr-to file)))))
 556
 557 (defun stgit-file-pp (file)
 558   (let ((status (stgit-file-status file))
 559         (name (if (stgit-file-copy-or-rename file)
 560                   (stgit-describe-copy-or-rename file)
 561                 (stgit-file-file file)))
 562         (mode-change (stgit-file-mode-change-string
 563                       (stgit-file-old-perm file)
 564                       (stgit-file-new-perm file)))
 565         (start (point)))
 566     (insert (format "    %-12s%s%s%s%s\n"
 567                     (stgit-file-status-code-as-string file)
 568                     mode-change
 569                     (if (zerop (length mode-change)) "" " ")
 570                     name
 571                     (propertize (stgit-file-type-change-string
 572                                  (stgit-file-old-perm file)
 573                                  (stgit-file-new-perm file))
 574                                 'face 'stgit-description-face)))
 575     (add-text-properties start (point)
 576                          (list 'entry-type 'file
 577                                'file-data file))))
 578
 579 (defun stgit-find-copies-harder-diff-arg ()
 580   "Return the flag to use with `git-diff' depending on the
 581 `stgit-find-copies-harder' flag."
 582   (if stgit-find-copies-harder "--find-copies-harder" "-C"))
 583
 584 (defun stgit-insert-ls-files (args file-flag)
 585   (let ((start (point)))
 586     (apply 'stgit-run-git
 587            (append '("ls-files" "--exclude-standard" "-z") args))
 588     (goto-char start)
 589     (while (looking-at "\\([^\0]*\\)\0")
 590       (let ((name-len (- (match-end 0) (match-beginning 0))))
 591         (insert ":0 0 0000000000000000000000000000000000000000 0000000000000000000000000000000000000000 " file-flag "\0")
 592         (forward-char name-len)))))
 593
 594 (defun stgit-insert-patch-files (patch)
 595   "Expand (show modification of) the patch PATCH after the line
 596 at point."
 597   (let* ((patchsym (stgit-patch-name patch))
 598          (end      (point-marker))
 599          (args     (list "-z" (stgit-find-copies-harder-diff-arg)))
 600          (ewoc     (ewoc-create #'stgit-file-pp nil nil t)))
 601     (set-marker-insertion-type end t)
 602     (setf (stgit-patch-files-ewoc patch) ewoc)
 603     (with-temp-buffer
 604       (let ((standard-output (current-buffer)))
 605         (apply 'stgit-run-git
 606                (cond ((eq patchsym :work)
 607                       `("diff-files" "-0" ,@args))
 608                      ((eq patchsym :index)
 609                       `("diff-index" ,@args "--cached" "HEAD"))
 610                      (t
 611                       `("diff-tree" ,@args "-r" ,(stgit-id patchsym)))))
 612
 613         (when (and (eq patchsym :work))
 614           (when stgit-show-ignored
 615             (stgit-insert-ls-files '("--ignored" "--others") "I"))
 616           (when stgit-show-unknown
 617             (stgit-insert-ls-files '("--others") "X"))
 618           (sort-regexp-fields nil ":[^\0]*\0\\([^\0]*\\)\0" "\\1"
 619                               (point-min) (point-max)))
 620
 621         (goto-char (point-min))
 622         (unless (or (eobp) (memq patchsym '(:work :index)))
 623           (forward-char 41))
 624         (while (looking-at ":\\([0-7]+\\) \\([0-7]+\\) [0-9A-Fa-f]\\{40\\} [0-9A-Fa-f]\\{40\\} ")
 625           (let ((old-perm (string-to-number (match-string 1) 8))
 626                 (new-perm (string-to-number (match-string 2) 8)))
 627             (goto-char (match-end 0))
 628             (let ((file
 629                    (cond ((looking-at
 630                            "\\([CR]\\)\\([0-9]*\\)\0\\([^\0]*\\)\0\\([^\0]*\\)\0")
 631                           (let* ((patch-status (stgit-patch-status patch))
 632                                  (file-subexp  (if (eq patch-status 'unapplied)
 633                                                    3
 634                                                  4))
 635                                  (file         (match-string file-subexp)))
 636                             (make-stgit-file
 637                              :old-perm       old-perm
 638                              :new-perm       new-perm
 639                              :copy-or-rename t
 640                              :cr-score       (string-to-number (match-string 2))
 641                              :cr-from        (match-string 3)
 642                              :cr-to          (match-string 4)
 643                              :status         (stgit-file-status-code
 644                                               (match-string 1))
 645                              :file           file)))
 646                          ((looking-at "\\([ABD-QS-Z]\\)\0\\([^\0]*\\)\0")
 647                           (make-stgit-file
 648                            :old-perm       old-perm
 649                            :new-perm       new-perm
 650                            :copy-or-rename nil
 651                            :cr-score       nil
 652                            :cr-from        nil
 653                            :cr-to          nil
 654                            :status         (stgit-file-status-code
 655                                             (match-string 1))
 656                            :file           (match-string 2))))))
 657               (goto-char (match-end 0))
 658               (ewoc-enter-last ewoc file))))
 659
 660         (unless (ewoc-nth ewoc 0)
 661           (ewoc-set-hf ewoc ""
 662                        (concat "    "
 663                                (propertize "<no files>"
 664                                            'face 'stgit-description-face)
 665                                "\n")))))
 666     (goto-char end)))
 667
 668 (defun stgit-find-file (&optional other-window)
 669   (let* ((file (or (stgit-patched-file-at-point)
 670                    (error "No file at point")))
 671          (filename (expand-file-name (stgit-file-file file))))
 672     (unless (file-exists-p filename)
 673       (error "File does not exist"))
 674     (funcall (if other-window 'find-file-other-window 'find-file)
 675              filename)
 676     (when (eq (stgit-file-status file) 'unmerged)
 677       (smerge-mode 1))))
 678
 679 (defun stgit-expand (&optional patches collapse)
 680   "Show the contents of marked patches, or the patch at point.
 681
 682 See also `stgit-collapse'.
 683
 684 Non-interactively, operate on PATCHES, and collapse instead of
 685 expand if COLLAPSE is not nil."
 686   (interactive (list (stgit-patches-marked-or-at-point t)))
 687   (stgit-assert-mode)
 688   (let ((patches-diff (funcall (if collapse #'intersection #'set-difference)
 689                                patches stgit-expanded-patches)))
 690     (setq stgit-expanded-patches
 691           (if collapse
 692               (set-difference stgit-expanded-patches patches-diff)
 693             (append stgit-expanded-patches patches-diff)))
 694     (ewoc-map #'(lambda (patch)
 695                   (memq (stgit-patch-name patch) patches-diff))
 696               stgit-ewoc))
 697   (move-to-column (stgit-goal-column)))
 698
 699 (defun stgit-collapse (&optional patches)
 700   "Hide the contents of marked patches, or the patch at point.
 701
 702 See also `stgit-expand'."
 703   (interactive (list (stgit-patches-marked-or-at-point t)))
 704   (stgit-assert-mode)
 705   (stgit-expand patches t))
 706
 707 (defun stgit-select-patch ()
 708   (let ((patchname (stgit-patch-name-at-point)))
 709     (stgit-expand (list patchname)
 710                   (memq patchname stgit-expanded-patches))))
 711
 712 (defun stgit-select ()
 713   "With point on a patch, toggle showing files in the patch.
 714
 715 With point on a file, open the associated file. Opens the target
 716 file for (applied) copies and renames."
 717   (interactive)
 718   (stgit-assert-mode)
 719   (case (get-text-property (point) 'entry-type)
 720     ('patch
 721      (stgit-select-patch))
 722     ('file
 723      (stgit-find-file))
 724     (t
 725      (error "No patch or file on line"))))
 726
 727 (defun stgit-find-file-other-window ()
 728   "Open file at point in other window"
 729   (interactive)
 730   (stgit-assert-mode)
 731   (stgit-find-file t))
 732
 733 (defun stgit-find-file-merge ()
 734   "Open file at point and merge it using `smerge-ediff'."
 735   (interactive)
 736   (stgit-assert-mode)
 737   (stgit-find-file t)
 738   (smerge-ediff))
 739
 740 (defun stgit-quit ()
 741   "Hide the stgit buffer."
 742   (interactive)
 743   (stgit-assert-mode)
 744   (bury-buffer))
 745
 746 (defun stgit-git-status ()
 747   "Show status using `git-status'."
 748   (interactive)
 749   (stgit-assert-mode)
 750   (unless (fboundp 'git-status)
 751     (error "The stgit-git-status command requires git-status"))
 752   (let ((dir default-directory))
 753     (save-selected-window
 754       (pop-to-buffer nil)
 755       (git-status dir))))
 756
 757 (defun stgit-goal-column ()
 758   "Return goal column for the current line"
 759   (case (get-text-property (point) 'entry-type)
 760     ('patch 2)
 761     ('file 4)
 762     (t 0)))
 763
 764 (defun stgit-next-line (&optional arg)
 765   "Move cursor vertically down ARG lines"
 766   (interactive "p")
 767   (stgit-assert-mode)
 768   (next-line arg)
 769   (move-to-column (stgit-goal-column)))
 770
 771 (defun stgit-previous-line (&optional arg)
 772   "Move cursor vertically up ARG lines"
 773   (interactive "p")
 774   (stgit-assert-mode)
 775   (previous-line arg)
 776   (move-to-column (stgit-goal-column)))
 777
 778 (defun stgit-next-patch (&optional arg)
 779   "Move cursor down ARG patches."
 780   (interactive "p")
 781   (stgit-assert-mode)
 782   (ewoc-goto-next stgit-ewoc (or arg 1))
 783   (move-to-column goal-column))
 784
 785 (defun stgit-previous-patch (&optional arg)
 786   "Move cursor up ARG patches."
 787   (interactive "p")
 788   (stgit-assert-mode)
 789   (ewoc-goto-prev stgit-ewoc (or arg 1))
 790   (move-to-column goal-column))
 791
 792 (defvar stgit-mode-hook nil
 793   "Run after `stgit-mode' is setup.")
 794
 795 (defvar stgit-mode-map nil
 796   "Keymap for StGit major mode.")
 797
 798 (unless stgit-mode-map
 799   (let ((diff-map   (make-sparse-keymap))
 800         (toggle-map (make-sparse-keymap)))
 801     (suppress-keymap diff-map)
 802     (mapc (lambda (arg) (define-key diff-map (car arg) (cdr arg)))
 803           '(("b" .        stgit-diff-base)
 804             ("c" .        stgit-diff-combined)
 805             ("m" .        stgit-find-file-merge)
 806             ("o" .        stgit-diff-ours)
 807             ("t" .        stgit-diff-theirs)))
 808     (suppress-keymap toggle-map)
 809     (mapc (lambda (arg) (define-key toggle-map (car arg) (cdr arg)))
 810           '(("t" .        stgit-toggle-worktree)
 811             ("i" .        stgit-toggle-ignored)
 812             ("u" .        stgit-toggle-unknown)))
 813     (setq stgit-mode-map (make-keymap))
 814     (suppress-keymap stgit-mode-map)
 815     (mapc (lambda (arg) (define-key stgit-mode-map (car arg) (cdr arg)))
 816           `((" " .        stgit-mark-down)
 817             ("m" .        stgit-mark-down)
 818             ("\d" .       stgit-unmark-up)
 819             ("u" .        stgit-unmark-down)
 820             ("?" .        stgit-help)
 821             ("h" .        stgit-help)
 822             ("\C-p" .     stgit-previous-line)
 823             ("\C-n" .     stgit-next-line)
 824             ([up] .       stgit-previous-line)
 825             ([down] .     stgit-next-line)
 826             ("p" .        stgit-previous-patch)
 827             ("n" .        stgit-next-patch)
 828             ("\M-{" .     stgit-previous-patch)
 829             ("\M-}" .     stgit-next-patch)
 830             ("s" .        stgit-git-status)
 831             ("g" .        stgit-reload-or-repair)
 832             ("r" .        stgit-refresh)
 833             ("\C-c\C-r" . stgit-rename)
 834             ("e" .        stgit-edit)
 835             ("M" .        stgit-move-patches)
 836             ("S" .        stgit-squash)
 837             ("N" .        stgit-new)
 838             ("c" .        stgit-new-and-refresh)
 839             ("\C-c\C-c" . stgit-commit)
 840             ("\C-c\C-u" . stgit-uncommit)
 841             ("U" .        stgit-revert)
 842             ("R" .        stgit-resolve-file)
 843             ("\r" .       stgit-select)
 844             ("+" .        stgit-expand)
 845             ("-" .        stgit-collapse)
 846             ("o" .        stgit-find-file-other-window)
 847             ("i" .        stgit-toggle-index)
 848             (">" .        stgit-push-next)
 849             ("<" .        stgit-pop-next)
 850             ("P" .        stgit-push-or-pop)
 851             ("G" .        stgit-goto)
 852             ("=" .        stgit-diff)
 853             ("D" .        stgit-delete)
 854             ([?\C-/] .    stgit-undo)
 855             ("\C-_" .     stgit-undo)
 856             ([?\C-c ?\C-/] . stgit-redo)
 857             ("\C-c\C-_" . stgit-redo)
 858             ("B" .        stgit-branch)
 859             ("\C-c\C-b" . stgit-rebase)
 860             ("t" .        ,toggle-map)
 861             ("d" .        ,diff-map)
 862             ("q" .        stgit-quit))))
 863
 864   (let ((at-unmerged-file '(let ((file (stgit-patched-file-at-point)))
 865                              (and file (eq (stgit-file-status file)
 866                                            'unmerged))))
 867         (patch-collapsed-p '(lambda (p) (not (memq p stgit-expanded-patches)))))
 868     (easy-menu-define stgit-menu stgit-mode-map
 869       "StGit Menu"
 870       `("StGit"
 871         ["Reload" stgit-reload-or-repair
 872          :help "Reload StGit status from disk"]
 873         ["Repair" stgit-repair
 874          :keys "\\[universal-argument] \\[stgit-reload-or-repair]"
 875          :help "Repair StGit metadata"]
 876         "-"
 877         ["Undo" stgit-undo t]
 878         ["Redo" stgit-redo t]
 879         "-"
 880         ["Git status" stgit-git-status :active (fboundp 'git-status)]
 881         "-"
 882         ["New patch" stgit-new-and-refresh
 883          :help "Create a new patch from changes in index or work tree"
 884          :active (not (and (stgit-index-empty-p) (stgit-work-tree-empty-p)))]
 885         ["New empty patch" stgit-new
 886          :help "Create a new, empty patch"]
 887         ["(Un)mark patch" stgit-toggle-mark
 888          :label (if (memq (stgit-patch-name-at-point nil t)
 889                           stgit-marked-patches)
 890                     "Unmark patch" "Mark patch")
 891          :active (stgit-patch-name-at-point nil t)]
 892         ["Expand/collapse patch"
 893          (let ((patches (stgit-patches-marked-or-at-point)))
 894            (if (member-if ,patch-collapsed-p patches)
 895                (stgit-expand patches)
 896              (stgit-collapse patches)))
 897          :label (if (member-if ,patch-collapsed-p
 898                                (stgit-patches-marked-or-at-point))
 899                     "Expand patches"
 900                   "Collapse patches")
 901          :active (stgit-patches-marked-or-at-point)]
 902         ["Edit patch" stgit-edit
 903          :help "Edit patch comment"
 904          :active (stgit-patch-name-at-point nil t)]
 905         ["Rename patch" stgit-rename :active (stgit-patch-name-at-point nil t)]
 906         ["Push/pop patch" stgit-push-or-pop
 907          :label (if (subsetp (stgit-patches-marked-or-at-point nil t)
 908                              (stgit-applied-patchsyms t))
 909                     "Pop patches" "Push patches")]
 910         ["Delete patches" stgit-delete
 911          :active (stgit-patches-marked-or-at-point nil t)]
 912         "-"
 913         ["Move patches" stgit-move-patches
 914          :active stgit-marked-patches
 915          :help "Move marked patch(es) to point"]
 916         ["Squash patches" stgit-squash
 917          :active (> (length stgit-marked-patches) 1)
 918          :help "Merge marked patches into one"]
 919         "-"
 920         ["Refresh top patch" stgit-refresh
 921          :active (not (and (stgit-index-empty-p) (stgit-work-tree-empty-p)))
 922          :help "Refresh the top patch with changes in index or work tree"]
 923         ["Refresh this patch" (stgit-refresh t)
 924          :keys "\\[universal-argument] \\[stgit-refresh]"
 925          :help "Refresh marked patch with changes in index or work tree"
 926          :active (and (not (and (stgit-index-empty-p)
 927                                 (stgit-work-tree-empty-p)))
 928                       (stgit-patch-name-at-point nil t))]
 929         "-"
 930         ["Find file" stgit-select
 931          :active (eq (get-text-property (point) 'entry-type) 'file)]
 932         ["Open file" stgit-find-file-other-window
 933          :active (eq (get-text-property (point) 'entry-type) 'file)]
 934         ["Toggle file index" stgit-toggle-index
 935          :active (and (eq (get-text-property (point) 'entry-type) 'file)
 936                       (memq (stgit-patch-name-at-point) '(:work :index)))
 937          :label (if (eq (stgit-patch-name-at-point) :work)
 938                     "Move change to index"
 939                   "Move change to work tree")]
 940         "-"
 941         ["Show diff" stgit-diff
 942          :active (get-text-property (point) 'entry-type)]
 943         ("Merge"
 944          :active (stgit-git-index-unmerged-p)
 945          ["Combined diff" stgit-diff-combined
 946           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 947          ["Diff against base" stgit-diff-base
 948           :help "Show diff against the common base"
 949           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 950          ["Diff against ours" stgit-diff-ours
 951           :help "Show diff against our branch"
 952           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 953          ["Diff against theirs" stgit-diff-theirs
 954           :help "Show diff against their branch"
 955           :active (memq (stgit-patch-name-at-point nil nil) '(:work :index))]
 956          "-"
 957          ["Interactive merge" stgit-find-file-merge
 958           :help "Interactively merge the file"
 959           :active ,at-unmerged-file]
 960          ["Resolve file" stgit-resolve-file
 961           :help "Mark file conflict as resolved"
 962           :active ,at-unmerged-file]
 963          )
 964         "-"
 965         ["Show index & work tree" stgit-toggle-worktree :style toggle
 966          :selected stgit-show-worktree]
 967         ["Show unknown files" stgit-toggle-unknown :style toggle
 968          :selected stgit-show-unknown :active stgit-show-worktree]
 969         ["Show ignored files" stgit-toggle-ignored :style toggle
 970          :selected stgit-show-ignored :active stgit-show-worktree]
 971         "-"
 972         ["Switch branches" stgit-branch t
 973          :help "Switch to another branch"]
 974         ["Rebase branch" stgit-rebase t
 975          :help "Rebase the current branch"]
 976         ))))
 977
 978 ;; disable tool bar editing buttons
 979 (put 'stgit-mode 'mode-class 'special)
 980
 981 (defun stgit-mode ()
 982   "Major mode for interacting with StGit.
 983
 984 Start StGit using \\[stgit].
 985
 986 Basic commands:
 987 \\<stgit-mode-map>\
 988 \\[stgit-help]  Show this help text
 989 \\[stgit-quit]  Hide the StGit buffer
 990 \\[describe-bindings]   Show all key bindings
 991
 992 \\[stgit-reload-or-repair]      Reload the StGit buffer
 993 \\[universal-argument] \\[stgit-reload-or-repair]       Repair StGit metadata
 994
 995 \\[stgit-undo]  Undo most recent StGit operation
 996 \\[stgit-redo]  Undo recent undo
 997
 998 \\[stgit-git-status]    Run `git-status' (if available)
 999
1000 Movement commands:
1001 \\[stgit-previous-line] Move to previous line
1002 \\[stgit-next-line]     Move to next line
1003 \\[stgit-previous-patch]        Move to previous patch
1004 \\[stgit-next-patch]    Move to next patch
1005
1006 \\[stgit-mark-down]     Mark patch and move down
1007 \\[stgit-unmark-up]     Unmark patch and move up
1008 \\[stgit-unmark-down]   Unmark patch and move down
1009
1010 Commands for patches:
1011 \\[stgit-select]        Toggle showing changed files in patch
1012 \\[stgit-refresh]       Refresh patch with changes in index or work tree
1013 \\[stgit-diff]  Show the patch log and diff
1014
1015 \\[stgit-expand]        Show changes in marked patches
1016 \\[stgit-collapse]      Hide changes in marked patches
1017
1018 \\[stgit-new-and-refresh]       Create a new patch from index or work tree
1019 \\[stgit-new]   Create a new, empty patch
1020
1021 \\[stgit-rename]        Rename patch
1022 \\[stgit-edit]  Edit patch description
1023 \\[stgit-delete]        Delete patch(es)
1024
1025 \\[stgit-revert]        Revert all changes in index or work tree
1026 \\[stgit-toggle-index]  Toggle all changes between index and work tree
1027
1028 \\[stgit-push-next]     Push next patch onto stack
1029 \\[stgit-pop-next]      Pop current patch from stack
1030 \\[stgit-push-or-pop]   Push or pop marked patches
1031 \\[stgit-goto]  Make patch at point current by popping or pushing
1032
1033 \\[stgit-squash]        Squash (meld together) patches
1034 \\[stgit-move-patches]  Move marked patches to point
1035
1036 \\[stgit-commit]        Commit patch(es)
1037 \\[stgit-uncommit]      Uncommit patch(es)
1038
1039 Commands for files:
1040 \\[stgit-select]        Open the file in this window
1041 \\[stgit-find-file-other-window]        Open the file in another window
1042 \\[stgit-diff]  Show the file's diff
1043
1044 \\[stgit-toggle-index]  Toggle change between index and work tree
1045 \\[stgit-revert]        Revert changes to file
1046
1047 Display commands:
1048 \\[stgit-toggle-worktree]       Toggle showing index and work tree
1049 \\[stgit-toggle-unknown]        Toggle showing unknown files
1050 \\[stgit-toggle-ignored]        Toggle showing ignored files
1051
1052 Commands for diffs:
1053 \\[stgit-diff]  Show diff of patch or file
1054 \\[stgit-diff-base]     Show diff against the merge base
1055 \\[stgit-diff-ours]     Show diff against our branch
1056 \\[stgit-diff-theirs]   Show diff against their branch
1057
1058   With one prefix argument (e.g., \\[universal-argument] \\[stgit-diff]), \
1059 ignore space changes.
1060   With two prefix arguments (e.g., \\[universal-argument] \
1061 \\[universal-argument] \\[stgit-diff]), ignore all space changes.
1062
1063 Commands for merge conflicts:
1064 \\[stgit-find-file-merge]       Resolve conflicts using `smerge-ediff'
1065 \\[stgit-resolve-file]  Mark unmerged file as resolved
1066
1067 Commands for branches:
1068 \\[stgit-branch]        Switch to another branch
1069 \\[stgit-rebase]        Rebase the current branch
1070
1071 Customization variables:
1072 `stgit-abbreviate-copies-and-renames'
1073 `stgit-default-show-worktree'
1074 `stgit-find-copies-harder'
1075 `stgit-show-worktree-mode'
1076
1077 See also \\[customize-group] for the \"stgit\" group."
1078   (kill-all-local-variables)
1079   (buffer-disable-undo)
1080   (setq mode-name "StGit"
1081         major-mode 'stgit-mode
1082         goal-column 2)
1083   (use-local-map stgit-mode-map)
1084   (set (make-local-variable 'list-buffers-directory) default-directory)
1085   (set (make-local-variable 'stgit-marked-patches) nil)
1086   (set (make-local-variable 'stgit-expanded-patches) (list :work :index))
1087   (set (make-local-variable 'stgit-show-worktree) stgit-default-show-worktree)
1088   (set (make-local-variable 'stgit-index-node) nil)
1089   (set (make-local-variable 'stgit-worktree-node) nil)
1090   (set (make-local-variable 'parse-sexp-lookup-properties) t)
1091   (set-variable 'truncate-lines 't)
1092   (add-hook 'after-save-hook 'stgit-update-saved-file)
1093   (run-hooks 'stgit-mode-hook))
1094
1095 (defun stgit-update-saved-file ()
1096   (let* ((file (expand-file-name buffer-file-name))
1097          (dir (file-name-directory file))
1098          (gitdir (condition-case nil (git-get-top-dir dir)
1099                    (error nil)))
1100          (buffer (and gitdir (stgit-find-buffer gitdir))))
1101     (when buffer
1102       (with-current-buffer buffer
1103         (stgit-refresh-worktree)))))
1104
1105 (defun stgit-add-mark (patchsym)
1106   "Mark the patch PATCHSYM."
1107   (setq stgit-marked-patches (cons patchsym stgit-marked-patches)))
1108
1109 (defun stgit-remove-mark (patchsym)
1110   "Unmark the patch PATCHSYM."
1111   (setq stgit-marked-patches (delq patchsym stgit-marked-patches)))
1112
1113 (defun stgit-clear-marks ()
1114   "Unmark all patches."
1115   (setq stgit-marked-patches '()))
1116
1117 (defun stgit-patch-at-point (&optional cause-error)
1118   (get-text-property (point) 'patch-data))
1119
1120 (defun stgit-patch-name-at-point (&optional cause-error only-patches)
1121   "Return the patch name on the current line as a symbol.
1122 If CAUSE-ERROR is not nil, signal an error if none found.
1123 If ONLY-PATCHES is not nil, only allow real patches, and not
1124 index or work tree."
1125   (let ((patch (stgit-patch-at-point)))
1126     (and patch
1127          only-patches
1128          (memq (stgit-patch-status patch) '(work index))
1129          (setq patch nil))
1130     (cond (patch
1131            (stgit-patch-name patch))
1132           (cause-error
1133            (error "No patch on this line")))))
1134
1135 (defun stgit-patched-file-at-point ()
1136   (get-text-property (point) 'file-data))
1137
1138 (defun stgit-patches-marked-or-at-point (&optional cause-error only-patches)
1139   "Return the symbols of the marked patches, or the patch on the current line.
1140 If CAUSE-ERRROR is not nil, signal an error if none found.
1141 If ONLY-PATCHES is not nil, do not include index or work tree."
1142   (if stgit-marked-patches
1143       stgit-marked-patches
1144     (let ((patch (stgit-patch-name-at-point nil only-patches)))
1145       (cond (patch (list patch))
1146             (cause-error (error "No patches marked or at this line"))
1147             (t nil)))))
1148
1149 (defun stgit-goto-patch (patchsym &optional file)
1150   "Move point to the line containing patch PATCHSYM.
1151 If that patch cannot be found, do nothing.
1152
1153 If the patch was found and FILE is not nil, instead move to that
1154 file's line. If FILE cannot be found, stay on the line of
1155 PATCHSYM."
1156   (let ((node (ewoc-nth stgit-ewoc 0)))
1157     (while (and node (not (eq (stgit-patch-name (ewoc-data node))
1158                               patchsym)))
1159       (setq node (ewoc-next stgit-ewoc node)))
1160     (when (and node file)
1161       (let* ((file-ewoc (stgit-patch-files-ewoc (ewoc-data node)))
1162              (file-node (ewoc-nth file-ewoc 0)))
1163         (while (and file-node (not (equal (stgit-file-file (ewoc-data file-node)) file)))
1164           (setq file-node (ewoc-next file-ewoc file-node)))
1165         (when file-node
1166           (ewoc-goto-node file-ewoc file-node)
1167           (move-to-column (stgit-goal-column))
1168           (setq node nil))))
1169     (when node
1170       (ewoc-goto-node stgit-ewoc node)
1171       (move-to-column goal-column))))
1172
1173 (defun stgit-init ()
1174   "Run stg init."
1175   (interactive)
1176   (stgit-assert-mode)
1177   (stgit-capture-output nil
1178     (stgit-run "init"))
1179   (stgit-reload))
1180
1181 (defun stgit-toggle-mark ()
1182   "Toggle mark on the patch under point."
1183   (interactive)
1184   (stgit-assert-mode)
1185   (if (memq (stgit-patch-name-at-point t t) stgit-marked-patches)
1186       (stgit-unmark)
1187     (stgit-mark)))
1188
1189 (defun stgit-mark ()
1190   "Mark the patch under point."
1191   (interactive)
1192   (stgit-assert-mode)
1193   (let* ((node (ewoc-locate stgit-ewoc))
1194          (patch (ewoc-data node))
1195          (name (stgit-patch-name patch)))
1196     (when (eq name :work)
1197       (error "Cannot mark the work tree"))
1198     (when (eq name :index)
1199       (error "Cannot mark the index"))
1200     (stgit-add-mark (stgit-patch-name patch))
1201     (let ((column (current-column)))
1202       (ewoc-invalidate stgit-ewoc node)
1203       (move-to-column column))))
1204
1205 (defun stgit-mark-down ()
1206   "Mark the patch under point and move to the next patch."
1207   (interactive)
1208   (stgit-mark)
1209   (stgit-next-patch))
1210
1211 (defun stgit-unmark ()
1212   "Remove mark from the patch on the current line."
1213   (interactive)
1214   (stgit-assert-mode)
1215   (let* ((node (ewoc-locate stgit-ewoc))
1216          (patch (ewoc-data node)))
1217     (stgit-remove-mark (stgit-patch-name patch))
1218     (let ((column (current-column)))
1219       (ewoc-invalidate stgit-ewoc node)
1220       (move-to-column column))))
1221
1222 (defun stgit-unmark-up ()
1223   "Remove mark from the patch on the previous line."
1224   (interactive)
1225   (stgit-assert-mode)
1226   (stgit-previous-patch)
1227   (stgit-unmark))
1228
1229 (defun stgit-unmark-down ()
1230   "Remove mark from the patch on the current line."
1231   (interactive)
1232   (stgit-assert-mode)
1233   (stgit-unmark)
1234   (stgit-next-patch))
1235
1236 (defun stgit-rename (name)
1237   "Rename the patch under point to NAME."
1238   (interactive (list
1239                 (read-string "Patch name: "
1240                              (symbol-name (stgit-patch-name-at-point t t)))))
1241   (stgit-assert-mode)
1242   (let ((old-patchsym (stgit-patch-name-at-point t t)))
1243     (stgit-capture-output nil
1244       (stgit-run "rename" old-patchsym name))
1245     (let ((name-sym (intern name)))
1246       (when (memq old-patchsym stgit-expanded-patches)
1247         (setq stgit-expanded-patches
1248               (cons name-sym (delq old-patchsym stgit-expanded-patches))))
1249       (when (memq old-patchsym stgit-marked-patches)
1250         (setq stgit-marked-patches
1251               (cons name-sym (delq old-patchsym stgit-marked-patches))))
1252       (stgit-reload)
1253       (stgit-goto-patch name-sym))))
1254
1255 (defun stgit-reload-or-repair (repair)
1256   "Update the contents of the StGit buffer (`stgit-reload').
1257
1258 With a prefix argument, repair the StGit metadata if the branch
1259 was modified with git commands (`stgit-repair')."
1260   (interactive "P")
1261   (stgit-assert-mode)
1262   (if repair
1263       (stgit-repair)
1264     (stgit-reload)))
1265
1266 (defun stgit-repair ()
1267   "Run stg repair."
1268   (interactive)
1269   (stgit-assert-mode)
1270   (stgit-capture-output nil
1271     (stgit-run "repair"))
1272   (stgit-reload))
1273
1274 (defun stgit-available-branches ()
1275   "Returns a list of the available stg branches"
1276   (let ((output (with-output-to-string
1277                   (stgit-run "branch" "--list")))
1278         (start 0)
1279         result)
1280     (while (string-match "^>?\\s-+s\\s-+\\(\\S-+\\)" output start)
1281       (setq result (cons (match-string 1 output) result))
1282       (setq start (match-end 0)))
1283     result))
1284
1285 (defun stgit-branch (branch)
1286   "Switch to branch BRANCH."
1287   (interactive (list (completing-read "Switch to branch: "
1288                                       (stgit-available-branches))))
1289   (stgit-assert-mode)
1290   (stgit-capture-output nil (stgit-run "branch" "--" branch))
1291   (stgit-reload))
1292
1293 (defun stgit-available-refs (&optional omit-stgit)
1294   "Returns a list of the available git refs.
1295 If OMIT-STGIT is not nil, filter out \"resf/heads/*.stgit\"."
1296   (let* ((output (with-output-to-string
1297                    (stgit-run-git-silent "for-each-ref" "--format=%(refname)"
1298                                          "refs/tags" "refs/heads"
1299                                          "refs/remotes")))
1300          (result (split-string output "\n" t)))
1301     (mapcar (lambda (s)
1302               (if (string-match "^refs/\\(heads\\|tags\\|remotes\\)/" s)
1303                   (substring s (match-end 0))
1304                 s))
1305             (if omit-stgit
1306                 (delete-if (lambda (s)
1307                              (string-match "^refs/heads/.*\\.stgit$" s))
1308                            result)
1309               result))))
1310
1311 (defun stgit-rebase (new-base)
1312   "Rebase to NEW-BASE."
1313   (interactive (list (completing-read "Rebase to: "
1314                                       (stgit-available-refs t))))
1315   (stgit-assert-mode)
1316   (stgit-capture-output nil (stgit-run "rebase" new-base))
1317   (stgit-reload))
1318
1319 (defun stgit-commit (count)
1320   "Run stg commit on COUNT commits.
1321 Interactively, the prefix argument is used as COUNT.
1322 A negative COUNT will uncommit instead."
1323   (interactive "p")
1324   (stgit-assert-mode)
1325   (if (< count 0)
1326       (stgit-uncommit (- count))
1327     (stgit-capture-output nil (stgit-run "commit" "-n" count))
1328     (stgit-reload)))
1329
1330 (defun stgit-uncommit (count)
1331   "Run stg uncommit on COUNT commits.
1332 Interactively, the prefix argument is used as COUNT.
1333 A negative COUNT will commit instead."
1334   (interactive "p")
1335   (stgit-assert-mode)
1336   (if (< count 0)
1337       (stgit-commit (- count))
1338     (stgit-capture-output nil (stgit-run "uncommit" "-n" count))
1339     (stgit-reload)))
1340
1341 (defun stgit-neighbour-file ()
1342   "Return the file name of the next file after point, or the
1343 previous file if point is at the last file within a patch."
1344   (let ((old-point (point))
1345         neighbour-file)
1346     (and (zerop (forward-line 1))
1347          (let ((f (stgit-patched-file-at-point)))
1348            (and f (setq neighbour-file (stgit-file-file f)))))
1349     (goto-char old-point)
1350     (unless neighbour-file
1351       (and (zerop (forward-line -1))
1352            (let ((f (stgit-patched-file-at-point)))
1353              (and f (setq neighbour-file (stgit-file-file f)))))
1354       (goto-char old-point))
1355     neighbour-file))
1356
1357 (defun stgit-revert-file ()
1358   "Revert the file at point, which must be in the index or the
1359 working tree."
1360   (interactive)
1361   (stgit-assert-mode)
1362   (let* ((patched-file (or (stgit-patched-file-at-point)
1363                            (error "No file on the current line")))
1364          (patch-name   (stgit-patch-name-at-point))
1365          (file-status  (stgit-file-status patched-file))
1366          (rm-file      (cond ((stgit-file-copy-or-rename patched-file)
1367                               (stgit-file-cr-to patched-file))
1368                              ((eq file-status 'add)
1369                               (stgit-file-file patched-file))))
1370          (co-file      (cond ((eq file-status 'rename)
1371                               (stgit-file-cr-from patched-file))
1372                              ((not (memq file-status '(copy add)))
1373                               (stgit-file-file patched-file))))
1374          (next-file    (stgit-neighbour-file)))
1375
1376     (unless (memq patch-name '(:work :index))
1377       (error "No index or working tree file on this line"))
1378
1379     (when (eq file-status 'ignore)
1380       (error "Cannot revert ignored files"))
1381
1382     (when (eq file-status 'unknown)
1383       (error "Cannot revert unknown files"))
1384
1385     (let ((nfiles (+ (if rm-file 1 0) (if co-file 1 0))))
1386       (when (yes-or-no-p (format "Revert %d file%s? "
1387                                  nfiles
1388                                  (if (= nfiles 1) "" "s")))
1389         (stgit-capture-output nil
1390           (when rm-file
1391             (stgit-run-git "rm" "-f" "-q" "--" rm-file))
1392           (when co-file
1393             (stgit-run-git "checkout" "HEAD" co-file)))
1394         (stgit-reload)
1395         (stgit-goto-patch patch-name next-file)))))
1396
1397 (defun stgit-revert ()
1398   "Revert the change at point, which must be the index, the work
1399 tree, or a single change in either."
1400   (interactive)
1401   (stgit-assert-mode)
1402   (let ((patched-file (stgit-patched-file-at-point)))
1403     (if patched-file
1404         (stgit-revert-file)
1405       (let* ((patch-name (or (stgit-patch-name-at-point)
1406                              (error "No patch or file at point")))
1407              (patch-desc (case patch-name
1408                            (:index "index")
1409                            (:work  "work tree")
1410                            (t (error (substitute-command-keys
1411                                       "Use \\[stgit-delete] to delete a patch"))))))
1412         (when (if (eq patch-name :work)
1413                   (stgit-work-tree-empty-p)
1414                 (stgit-index-empty-p))
1415           (error (format "There are no changes in the %s to revert"
1416                          patch-desc)))
1417         (and (eq patch-name :index)
1418              (not (stgit-work-tree-empty-p))
1419              (error "Cannot revert index as work tree contains unstaged changes"))
1420
1421         (when (yes-or-no-p (format "Revert all changes in the %s? "
1422                                    patch-desc))
1423           (if (eq patch-name :index)
1424               (stgit-run-git-silent "reset" "--hard" "-q")
1425             (stgit-run-git-silent "checkout" "--" "."))
1426           (stgit-refresh-index)
1427           (stgit-refresh-worktree)
1428           (stgit-goto-patch patch-name))))))
1429
1430 (defun stgit-resolve-file ()
1431   "Resolve conflict in the file at point."
1432   (interactive)
1433   (stgit-assert-mode)
1434   (let* ((patched-file (stgit-patched-file-at-point))
1435          (patch        (stgit-patch-at-point))
1436          (patch-name   (and patch (stgit-patch-name patch)))
1437          (status       (and patched-file (stgit-file-status patched-file))))
1438
1439     (unless (memq patch-name '(:work :index))
1440       (error "No index or working tree file on this line"))
1441
1442     (unless (eq status 'unmerged)
1443       (error "No conflict to resolve at the current line"))
1444
1445     (stgit-capture-output nil
1446       (stgit-move-change-to-index (stgit-file-file patched-file)))
1447
1448     (stgit-reload)))
1449
1450 (defun stgit-push-next (npatches)
1451   "Push the first unapplied patch.
1452 With numeric prefix argument, push that many patches."
1453   (interactive "p")
1454   (stgit-assert-mode)
1455   (stgit-capture-output nil (stgit-run "push" "-n" npatches))
1456   (stgit-reload)
1457   (stgit-refresh-git-status))
1458
1459 (defun stgit-pop-next (npatches)
1460   "Pop the topmost applied patch.
1461 With numeric prefix argument, pop that many patches."
1462   (interactive "p")
1463   (stgit-assert-mode)
1464   (stgit-capture-output nil (stgit-run "pop" "-n" npatches))
1465   (stgit-reload)
1466   (stgit-refresh-git-status))
1467
1468 (defun stgit-applied-patches (&optional only-patches)
1469   "Return a list of the applied patches.
1470
1471 If ONLY-PATCHES is not nil, exclude index and work tree."
1472   (let ((states (if only-patches
1473                     '(applied top)
1474                   '(applied top index work)))
1475         result)
1476     (ewoc-map (lambda (patch) (when (memq (stgit-patch-status patch) states)
1477                                 (setq result (cons patch result))))
1478               stgit-ewoc)
1479     result))
1480
1481 (defun stgit-applied-patchsyms (&optional only-patches)
1482   "Return a list of the symbols of the applied patches.
1483
1484 If ONLY-PATCHES is not nil, exclude index and work tree."
1485   (mapcar #'stgit-patch-name (stgit-applied-patches only-patches)))
1486
1487 (defun stgit-push-or-pop ()
1488   "Push or pop the marked patches."
1489   (interactive)
1490   (stgit-assert-mode)
1491   (let* ((patchsyms (stgit-patches-marked-or-at-point t t))
1492          (applied-syms (stgit-applied-patchsyms t))
1493          (unapplied (set-difference patchsyms applied-syms)))
1494     (stgit-capture-output nil
1495       (apply 'stgit-run
1496              (if unapplied "push" "pop")
1497              "--"
1498              (stgit-sort-patches (if unapplied unapplied patchsyms)))))
1499   (stgit-reload))
1500
1501 (defun stgit-goto ()
1502   "Go to the patch on the current line.
1503
1504 Pops or pushes patches to make this patch topmost."
1505   (interactive)
1506   (stgit-assert-mode)
1507   (let ((patchsym (stgit-patch-name-at-point t)))
1508     (stgit-capture-output nil
1509       (stgit-run "goto" patchsym))
1510     (stgit-reload)))
1511
1512 (defun stgit-id (patchsym)
1513   "Return the git commit id for PATCHSYM.
1514 If PATCHSYM is a keyword, returns PATCHSYM unmodified."
1515   (if (keywordp patchsym)
1516       patchsym
1517     (let ((result (with-output-to-string
1518                     (stgit-run-silent "id" patchsym))))
1519       (unless (string-match "^\\([0-9A-Fa-f]\\{40\\}\\)$" result)
1520         (error "Cannot find commit id for %s" patchsym))
1521       (match-string 1 result))))
1522
1523 (defun stgit-show-patch (unmerged-stage ignore-whitespace)
1524   "Show the patch on the current line.
1525
1526 UNMERGED-STAGE is the argument to `git-diff' that that selects
1527 which stage to diff against in the case of unmerged files."
1528   (let ((space-arg (when (numberp ignore-whitespace)
1529                      (cond ((> ignore-whitespace 4)
1530                             "--ignore-all-space")
1531                            ((> ignore-whitespace 1)
1532                             "--ignore-space-change"))))
1533         (patch-name (stgit-patch-name-at-point t)))
1534     (stgit-capture-output "*StGit patch*"
1535       (case (get-text-property (point) 'entry-type)
1536         ('file
1537          (let* ((patched-file (stgit-patched-file-at-point))
1538                 (patch-id (let ((id (stgit-id patch-name)))
1539                             (if (and (eq id :index)
1540                                      (eq (stgit-file-status patched-file)
1541                                          'unmerged))
1542                                 :work
1543                               id)))
1544                 (args (append (and space-arg (list space-arg))
1545                               (and (stgit-file-cr-from patched-file)
1546                                    (list (stgit-find-copies-harder-diff-arg)))
1547                               (cond ((eq patch-id :index)
1548                                      '("--cached"))
1549                                     ((eq patch-id :work)
1550                                      (list unmerged-stage))
1551                                     (t
1552                                      (list (concat patch-id "^") patch-id)))
1553                               '("--")
1554                               (if (stgit-file-copy-or-rename patched-file)
1555                                   (list (stgit-file-cr-from patched-file)
1556                                         (stgit-file-cr-to patched-file))
1557                                 (list (stgit-file-file patched-file))))))
1558            (apply 'stgit-run-git "diff" args)))
1559         ('patch
1560          (let* ((patch-id (stgit-id patch-name)))
1561            (if (or (eq patch-id :index) (eq patch-id :work))
1562                (apply 'stgit-run-git "diff"
1563                       (stgit-find-copies-harder-diff-arg)
1564                       (append (and space-arg (list space-arg))
1565                               (if (eq patch-id :index)
1566                                   '("--cached")
1567                                 (list unmerged-stage))))
1568              (let ((args (append '("show" "-O" "--patch-with-stat" "-O" "-M")
1569                                  (and space-arg (list "-O" space-arg))
1570                                  (list (stgit-patch-name-at-point)))))
1571                (apply 'stgit-run args)))))
1572         (t
1573          (error "No patch or file at point")))
1574       (with-current-buffer standard-output
1575         (goto-char (point-min))
1576         (diff-mode)))))
1577
1578 (defmacro stgit-define-diff (name diff-arg &optional unmerged-action)
1579   `(defun ,name (&optional ignore-whitespace)
1580      ,(format "Show the patch on the current line.
1581
1582 %sWith a prefix argument, ignore whitespace. With a prefix argument
1583 greater than four (e.g., \\[universal-argument] \
1584 \\[universal-argument] \\[%s]), ignore all whitespace."
1585               (if unmerged-action
1586                   (format "For unmerged files, %s.\n\n" unmerged-action)
1587                 "")
1588               name)
1589      (interactive "p")
1590      (stgit-assert-mode)
1591      (stgit-show-patch ,diff-arg ignore-whitespace)))
1592
1593 (stgit-define-diff stgit-diff
1594                    "--ours" nil)
1595 (stgit-define-diff stgit-diff-ours
1596                    "--ours"
1597                    "diff against our branch")
1598 (stgit-define-diff stgit-diff-theirs
1599                    "--theirs"
1600                    "diff against their branch")
1601 (stgit-define-diff stgit-diff-base
1602                    "--base"
1603                    "diff against the merge base")
1604 (stgit-define-diff stgit-diff-combined
1605                    "--cc"
1606                    "show a combined diff")
1607
1608 (defun stgit-move-change-to-index (file &optional force)
1609   "Copies the work tree state of FILE to index, using git add or git rm.
1610
1611 If FORCE is not nil, use --force."
1612   (let ((op (if (or (file-exists-p file) (file-symlink-p file))
1613                 '("add") '("rm" "-q"))))
1614     (stgit-capture-output "*git output*"
1615       (apply 'stgit-run-git (append op (and force '("--force"))
1616                                     '("--") (list file))))))
1617
1618 (defun stgit-remove-change-from-index (file)
1619   "Unstages the change in FILE from the index"
1620   (stgit-capture-output "*git output*"
1621     (stgit-run-git "reset" "-q" "--" file)))
1622
1623 (defun stgit-git-index-unmerged-p ()
1624   (let (result)
1625     (with-output-to-string
1626       (setq result (not (zerop (stgit-run-git-silent "diff-index" "--cached"
1627                                                      "--diff-filter=U"
1628                                                      "--quiet" "HEAD")))))
1629     result))
1630
1631 (defun stgit-file-toggle-index ()
1632   "Move modified file in or out of the index.
1633
1634 Leaves the point where it is, but moves the mark to where the
1635 file ended up. You can then jump to the file with \
1636 \\[exchange-point-and-mark]."
1637   (interactive)
1638   (stgit-assert-mode)
1639   (let* ((patched-file   (or (stgit-patched-file-at-point)
1640                              (error "No file on the current line")))
1641          (patched-status (stgit-file-status patched-file)))
1642     (when (eq patched-status 'unmerged)
1643       (error (substitute-command-keys "Use \\[stgit-resolve-file] to move an unmerged file to the index")))
1644     (let* ((patch      (stgit-patch-at-point))
1645            (patch-name (stgit-patch-name patch))
1646            (mark-file  (if (eq patched-status 'rename)
1647                            (stgit-file-cr-to patched-file)
1648                          (stgit-file-file patched-file)))
1649            (point-file  (if (eq patched-status 'rename)
1650                             (stgit-file-cr-from patched-file)
1651                           (stgit-neighbour-file))))
1652
1653       (cond ((eq patch-name :work)
1654              (stgit-move-change-to-index (stgit-file-file patched-file)
1655                                          (eq patched-status 'ignore)))
1656             ((eq patch-name :index)
1657              (stgit-remove-change-from-index (stgit-file-file patched-file)))
1658             (t
1659              (error "Can only move files between working tree and index")))
1660       (stgit-refresh-worktree)
1661       (stgit-refresh-index)
1662       (stgit-goto-patch (if (eq patch-name :index) :work :index) mark-file)
1663       (push-mark nil t t)
1664       (stgit-goto-patch patch-name point-file))))
1665
1666 (defun stgit-toggle-index ()
1667   "Move change in or out of the index.
1668
1669 Works on index and work tree, as well as files in either.
1670
1671 Leaves the point where it is, but moves the mark to where the
1672 file ended up. You can then jump to the file with \
1673 \\[exchange-point-and-mark]."
1674   (interactive)
1675   (stgit-assert-mode)
1676   (if (stgit-patched-file-at-point)
1677       (stgit-file-toggle-index)
1678     (let ((patch-name (stgit-patch-name-at-point)))
1679       (unless (memq patch-name '(:index :work))
1680         (error "Can only move changes between working tree and index"))
1681       (when (stgit-git-index-unmerged-p)
1682         (error "Resolve unmerged changes with \\[stgit-resolve-file] first"))
1683       (if (if (eq patch-name :index)
1684               (stgit-index-empty-p)
1685             (stgit-work-tree-empty-p))
1686           (message "No changes to be moved")
1687         (stgit-capture-output nil
1688           (if (eq patch-name :work)
1689               (stgit-run-git "add" "--update")
1690             (stgit-run-git "reset" "--mixed" "-q")))
1691         (stgit-refresh-worktree)
1692         (stgit-refresh-index))
1693       (stgit-goto-patch (if (eq patch-name :index) :work :index)))))
1694
1695 (defun stgit-edit ()
1696   "Edit the patch on the current line."
1697   (interactive)
1698   (stgit-assert-mode)
1699   (let ((patchsym (stgit-patch-name-at-point t t))
1700         (edit-buf (get-buffer-create "*StGit edit*"))
1701         (dir default-directory))
1702     (log-edit 'stgit-confirm-edit t nil edit-buf)
1703     (set (make-local-variable 'stgit-edit-patchsym) patchsym)
1704     (setq default-directory dir)
1705     (let ((standard-output edit-buf))
1706       (stgit-run-silent "edit" "--save-template=-" patchsym))))
1707
1708 (defun stgit-confirm-edit ()
1709   (interactive)
1710   (let ((file (make-temp-file "stgit-edit-")))
1711     (write-region (point-min) (point-max) file)
1712     (stgit-capture-output nil
1713       (stgit-run "edit" "-f" file stgit-edit-patchsym))
1714     (with-current-buffer log-edit-parent-buffer
1715       (stgit-reload))))
1716
1717 (defun stgit-new (add-sign &optional refresh)
1718   "Create a new patch.
1719 With a prefix argument, include a \"Signed-off-by:\" line at the
1720 end of the patch."
1721   (interactive "P")
1722   (stgit-assert-mode)
1723   (let ((edit-buf (get-buffer-create "*StGit edit*"))
1724         (dir default-directory))
1725     (log-edit 'stgit-confirm-new t nil edit-buf)
1726     (setq default-directory dir)
1727     (set (make-local-variable 'stgit-refresh-after-new) refresh)
1728     (when add-sign
1729       (save-excursion
1730         (let ((standard-output (current-buffer)))
1731           (stgit-run-silent "new" "--sign" "--save-template=-"))))))
1732
1733 (defun stgit-confirm-new ()
1734   (interactive)
1735   (let ((file (make-temp-file "stgit-edit-"))
1736         (refresh stgit-refresh-after-new))
1737     (write-region (point-min) (point-max) file)
1738     (stgit-capture-output nil
1739       (stgit-run "new" "-f" file))
1740     (with-current-buffer log-edit-parent-buffer
1741       (if refresh
1742           (stgit-refresh)
1743         (stgit-reload)))))
1744
1745 (defun stgit-new-and-refresh (add-sign)
1746   "Create a new patch and refresh it with the current changes.
1747
1748 With a prefix argument, include a \"Signed-off-by:\" line at the
1749 end of the patch.
1750
1751 This works just like running `stgit-new' followed by `stgit-refresh'."
1752   (interactive "P")
1753   (stgit-assert-mode)
1754   (stgit-new add-sign t))
1755
1756 (defun stgit-create-patch-name (description)
1757   "Create a patch name from a long description"
1758   (let ((patch ""))
1759     (while (> (length description) 0)
1760       (cond ((string-match "\\`[a-zA-Z_-]+" description)
1761              (setq patch (downcase (concat patch
1762                                            (match-string 0 description))))
1763              (setq description (substring description (match-end 0))))
1764             ((string-match "\\` +" description)
1765              (setq patch (concat patch "-"))
1766              (setq description (substring description (match-end 0))))
1767             ((string-match "\\`[^a-zA-Z_-]+" description)
1768              (setq description (substring description (match-end 0))))))
1769     (cond ((= (length patch) 0)
1770            "patch")
1771           ((> (length patch) 20)
1772            (substring patch 0 20))
1773           (t patch))))
1774
1775 (defun stgit-delete (patchsyms &optional spill-p)
1776   "Delete the patches in PATCHSYMS.
1777 Interactively, delete the marked patches, or the patch at point.
1778
1779 With a prefix argument, or SPILL-P, spill the patch contents to
1780 the work tree and index."
1781   (interactive (list (stgit-patches-marked-or-at-point t t)
1782                      current-prefix-arg))
1783   (stgit-assert-mode)
1784   (unless patchsyms
1785     (error "No patches to delete"))
1786   (when (memq :index patchsyms)
1787     (error "Cannot delete the index"))
1788   (when (memq :work  patchsyms)
1789     (error "Cannot delete the work tree"))
1790
1791   (let ((npatches (length patchsyms)))
1792     (when (yes-or-no-p (format "Really delete %d patch%s%s? "
1793                                npatches
1794                                (if (= 1 npatches) "" "es")
1795                                (if spill-p
1796                                    " (spilling contents to index)"
1797                                  "")))
1798       (let ((args (if spill-p
1799                       (cons "--spill" patchsyms)
1800                     patchsyms)))
1801         (stgit-capture-output nil
1802           (apply 'stgit-run "delete" args))
1803         (stgit-reload)))))
1804
1805 (defun stgit-move-patches-target ()
1806   "Return the patchsym indicating a target patch for
1807 `stgit-move-patches'.
1808
1809 This is either the first unmarked patch at or after point, or one
1810 of :top and :bottom if the point is after or before the applied
1811 patches."
1812
1813   (save-excursion
1814     (let (result)
1815       (while (not result)
1816         (let ((patchsym (stgit-patch-name-at-point)))
1817           (cond ((memq patchsym '(:work :index)) (setq result :top))
1818                 (patchsym (if (memq patchsym stgit-marked-patches)
1819                               (stgit-next-patch)
1820                             (setq result patchsym)))
1821                 ((re-search-backward "^>" nil t) (setq result :top))
1822                 (t (setq result :bottom)))))
1823       result)))
1824
1825 (defun stgit-sort-patches (patchsyms)
1826   "Returns the list of patches in PATCHSYMS sorted according to
1827 their position in the patch series, bottommost first.
1828
1829 PATCHSYMS must not contain duplicate entries."
1830   (let (sorted-patchsyms
1831         (series (with-output-to-string
1832                   (with-current-buffer standard-output
1833                     (stgit-run-silent "series" "--noprefix"))))
1834         start)
1835     (while (string-match "^\\(.+\\)" series start)
1836       (let ((patchsym (intern (match-string 1 series))))
1837         (when (memq patchsym patchsyms)
1838           (setq sorted-patchsyms (cons patchsym sorted-patchsyms))))
1839       (setq start (match-end 0)))
1840     (setq sorted-patchsyms (nreverse sorted-patchsyms))
1841
1842     (unless (= (length patchsyms) (length sorted-patchsyms))
1843       (error "Internal error"))
1844
1845     sorted-patchsyms))
1846
1847 (defun stgit-move-patches (patchsyms target-patch)
1848   "Move the patches in PATCHSYMS to below TARGET-PATCH.
1849 If TARGET-PATCH is :bottom or :top, move the patches to the
1850 bottom or top of the stack, respectively.
1851
1852 Interactively, move the marked patches to where the point is."
1853   (interactive (list stgit-marked-patches
1854                      (stgit-move-patches-target)))
1855   (stgit-assert-mode)
1856   (unless patchsyms
1857     (error "Need at least one patch to move"))
1858
1859   (unless target-patch
1860     (error "Point not at a patch"))
1861
1862   ;; need to have patchsyms sorted by position in the stack
1863   (let ((sorted-patchsyms (stgit-sort-patches patchsyms)))
1864     (stgit-capture-output nil
1865       (if (eq target-patch :top)
1866           (apply 'stgit-run "float" sorted-patchsyms)
1867         (apply 'stgit-run
1868                "sink"
1869                (append (unless (eq target-patch :bottom)
1870                          (list "--to" target-patch))
1871                        '("--")
1872                        sorted-patchsyms)))))
1873   (stgit-reload))
1874
1875 (defun stgit-squash (patchsyms)
1876   "Squash the patches in PATCHSYMS.
1877 Interactively, squash the marked patches.
1878
1879 Unless there are any conflicts, the patches will be merged into
1880 one patch, which will occupy the same spot in the series as the
1881 deepest patch had before the squash."
1882   (interactive (list stgit-marked-patches))
1883   (stgit-assert-mode)
1884   (when (< (length patchsyms) 2)
1885     (error "Need at least two patches to squash"))
1886   (let ((stgit-buffer (current-buffer))
1887         (edit-buf (get-buffer-create "*StGit edit*"))
1888         (dir default-directory)
1889         (sorted-patchsyms (stgit-sort-patches patchsyms)))
1890     (log-edit 'stgit-confirm-squash t nil edit-buf)
1891     (set (make-local-variable 'stgit-patchsyms) sorted-patchsyms)
1892     (setq default-directory dir)
1893     (let ((result (let ((standard-output edit-buf))
1894                     (apply 'stgit-run-silent "squash"
1895                            "--save-template=-" sorted-patchsyms))))
1896
1897       ;; stg squash may have reordered the patches or caused conflicts
1898       (with-current-buffer stgit-buffer
1899         (stgit-reload))
1900
1901       (unless (eq 0 result)
1902         (fundamental-mode)
1903         (rename-buffer "*StGit error*")
1904         (resize-temp-buffer-window)
1905         (switch-to-buffer-other-window stgit-buffer)
1906         (error "stg squash failed")))))
1907
1908 (defun stgit-confirm-squash ()
1909   (interactive)
1910   (let ((file (make-temp-file "stgit-edit-")))
1911     (write-region (point-min) (point-max) file)
1912     (stgit-capture-output nil
1913       (apply 'stgit-run "squash" "-f" file stgit-patchsyms))
1914     (with-current-buffer log-edit-parent-buffer
1915       (stgit-clear-marks)
1916       ;; Go to first marked patch and stay there
1917       (goto-char (point-min))
1918       (re-search-forward (concat "^[>+-]\\*") nil t)
1919       (move-to-column goal-column)
1920       (let ((pos (point)))
1921         (stgit-reload)
1922         (goto-char pos)))))
1923
1924 (defun stgit-help ()
1925   "Display help for the StGit mode."
1926   (interactive)
1927   (describe-function 'stgit-mode))
1928
1929 (defun stgit-undo (&optional arg)
1930   "Run stg undo.
1931 With prefix argument, run it with the --hard flag.
1932
1933 See also `stgit-redo'."
1934   (interactive "P")
1935   (stgit-assert-mode)
1936   (stgit-capture-output nil
1937     (if arg
1938         (stgit-run "undo" "--hard")
1939       (stgit-run "undo")))
1940   (stgit-reload))
1941
1942 (defun stgit-redo (&optional arg)
1943   "Run stg redo.
1944 With prefix argument, run it with the --hard flag.
1945
1946 See also `stgit-undo'."
1947   (interactive "P")
1948   (stgit-assert-mode)
1949   (stgit-capture-output nil
1950     (if arg
1951         (stgit-run "redo" "--hard")
1952       (stgit-run "redo")))
1953   (stgit-reload))
1954
1955 (defun stgit-refresh (&optional arg)
1956   "Run stg refresh.
1957 If the index contains any changes, only refresh from index.
1958
1959 With prefix argument, refresh the marked patch or the patch under point."
1960   (interactive "P")
1961   (stgit-assert-mode)
1962   (let ((patchargs (if arg
1963                        (let ((patches (stgit-patches-marked-or-at-point nil t)))
1964                          (when (> (length patches) 1)
1965                            (error "Too many patches marked"))
1966                          (cons "-p" patches))
1967                      nil)))
1968     (unless (stgit-index-empty-p)
1969       (setq patchargs (cons "--index" patchargs)))
1970     (stgit-capture-output nil
1971       (apply 'stgit-run "refresh" patchargs))
1972     (stgit-refresh-git-status))
1973   (stgit-reload))
1974
1975 (defvar stgit-show-worktree nil
1976   "If nil, inhibit showing work tree and index in the stgit buffer.
1977
1978 See also `stgit-show-worktree-mode'.")
1979
1980 (defvar stgit-show-ignored nil
1981   "If nil, inhibit showing files ignored by git.")
1982
1983 (defvar stgit-show-unknown nil
1984   "If nil, inhibit showing files not registered with git.")
1985
1986 (defun stgit-toggle-worktree (&optional arg)
1987   "Toggle the visibility of the work tree.
1988 With ARG, show the work tree if ARG is positive.
1989
1990 Its initial setting is controlled by `stgit-default-show-worktree'.
1991
1992 `stgit-show-worktree-mode' controls where on screen the index and
1993 work tree will show up."
1994   (interactive)
1995   (stgit-assert-mode)
1996   (setq stgit-show-worktree
1997         (if (numberp arg)
1998             (> arg 0)
1999           (not stgit-show-worktree)))
2000   (stgit-reload))
2001
2002 (defun stgit-toggle-ignored (&optional arg)
2003   "Toggle the visibility of files ignored by git in the work
2004 tree. With ARG, show these files if ARG is positive.
2005
2006 Use \\[stgit-toggle-worktree] to show the work tree."
2007   (interactive)
2008   (stgit-assert-mode)
2009   (setq stgit-show-ignored
2010         (if (numberp arg)
2011             (> arg 0)
2012           (not stgit-show-ignored)))
2013   (stgit-reload))
2014
2015 (defun stgit-toggle-unknown (&optional arg)
2016   "Toggle the visibility of files not registered with git in the
2017 work tree. With ARG, show these files if ARG is positive.
2018
2019 Use \\[stgit-toggle-worktree] to show the work tree."
2020   (interactive)
2021   (stgit-assert-mode)
2022   (setq stgit-show-unknown
2023         (if (numberp arg)
2024             (> arg 0)
2025           (not stgit-show-unknown)))
2026   (stgit-reload))
2027
2028 (provide 'stgit)