Add vc-mtn.el.

1 files changed, 285 insertions, 0 deletions

diff --git a/lisp/vc-mtn.el b/lisp/vc-mtn.el
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+;;; vc-mtn.el --- VC backend for Monotone
+
+;; Copyright (C) 2007  Free Software Foundation, Inc.
+
+;; Author: Stefan Monnier <[email protected]>
+;; Keywords: 
+
+;; This file is free software; you can redistribute it and/or modify
+;; it under the terms of the GNU General Public License as published by
+;; the Free Software Foundation; either version 3, or (at your option)
+;; any later version.
+
+;; This file is distributed in the hope that it will be useful,
+;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+;; GNU General Public License for more details.
+
+;; You should have received a copy of the GNU General Public License
+;; along with GNU Emacs; see the file COPYING.  If not, write to
+;; the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
+
+;;; Commentary:
+
+;; 
+
+;;; Code:
+
+(eval-when-compile (require 'cl) (require 'vc))
+
+;; Clear up the cache to force vc-call to check again and discover
+;; new functions when we reload this file.
+(put 'Mtn 'vc-functions nil)
+
+(defvar vc-mtn-command "mtn")
+(unless (executable-find vc-mtn-command)
+  ;; vc-mtn.el is 100% non-functional without the `mtn' executable.
+  (setq vc-handled-backends (delq 'Mtn vc-handled-backends)))
+
+;;;###autoload
+(defconst vc-mtn-admin-dir "_MTN")
+;;;###autoload
+(defconst vc-mtn-admin-format (concat vc-mtn-admin-dir "/format"))
+
+;;;###autoload (defun vc-mtn-registered (file)
+;;;###autoload   (if (vc-find-root file vc-mtn-admin-format)
+;;;###autoload       (progn
+;;;###autoload         (load "vc-mtn")
+;;;###autoload         (vc-mtn-registered file))))
+
+(defun vc-mtn-revision-granularity () 'repository)
+(defun vc-mtn-checkout-model (file) 'implicit)
+
+(defun vc-mtn-root (file)
+  (setq file (if (file-directory-p file)
+                 (file-name-as-directory file)
+               (file-name-directory file)))
+  (or (vc-file-getprop file 'vc-mtn-root)
+      (vc-file-setprop file 'vc-mtn-root
+                       (vc-find-root file vc-mtn-admin-format))))
+
+
+(defun vc-mtn-registered (file)
+  (let ((root (vc-mtn-root file)))
+    (when root
+      (vc-mtn-state file))))
+
+(defun vc-mtn-command (buffer okstatus files &rest flags)
+  "A wrapper around `vc-do-command' for use in vc-mtn.el."
+  (apply 'vc-do-command buffer okstatus vc-mtn-command files flags))
+
+(defun vc-mtn-state (file)
+  ;; If `mtn' fails or returns status>0, or if the search files, just
+  ;; return nil.
+  (ignore-errors
+    (with-temp-buffer
+      (vc-mtn-command t 0 file "status")
+      (goto-char (point-min))
+      (re-search-forward "^  \\(?:patched \\(.*\\)\\|no changes$\\)")
+      (if (match-end 1)
+          'edited
+        'up-to-date))))
+
+(defun vc-mtn-workfile-version (file)
+  ;; If `mtn' fails or returns status>0, or if the search fails, just
+  ;; return nil.
+  (ignore-errors
+    (with-temp-buffer
+      (vc-mtn-command t 0 file "status")
+      (goto-char (point-min))
+      (re-search-forward "Current branch: \\(.*\\)\nChanges against parent \\(.*\\)")
+      (match-string 2))))
+
+(defun vc-mtn-workfile-branch (file)
+  ;; If `mtn' fails or returns status>0, or if the search files, just
+  ;; return nil.
+  (ignore-errors
+    (with-temp-buffer
+      (vc-mtn-command t 0 file "status")
+      (goto-char (point-min))
+      (re-search-forward "Current branch: \\(.*\\)\nChanges against parent \\(.*\\)")
+      (match-string 1))))
+
+(defun vc-mtn-workfile-unchanged-p (file)
+  (not (eq (vc-mtn-state file) 'edited)))
+
+;; Mode-line rewrite code copied from vc-arch.el.
+
+(defcustom vc-mtn-mode-line-rewrite
+  '(("\\`[^:/#]*[:/#]" . ""))           ;Drop the host part.
+  "Rewrite rules to shorten Mtn's revision names on the mode-line."
+  :type '(repeat (cons regexp string))
+  :group 'vc)
+
+(defun vc-mtn-mode-line-string (file)
+  "Return string for placement in modeline by `vc-mode-line' for FILE."
+  (let ((branch (vc-mtn-workfile-branch file)))
+    (dolist (rule vc-mtn-mode-line-rewrite)
+      (if (string-match (car rule) branch)
+	  (setq branch (replace-match (cdr rule) t nil branch))))
+    (format "Mtn%c%s"
+	    (case (vc-state file)
+	      ((up-to-date needs-patch) ?-)
+	      (added ?@)
+	      (t ?:))
+	    branch)))
+
+(defun vc-mtn-register (files &optional rest)
+  (vc-mtn-command nil 0 files "add"))
+
+(defun vc-mtn-responsible-p (file) (vc-mtn-root file))
+(defun vc-mtn-could-register (file) (vc-mtn-root file))
+
+(defun vc-mtn-checkin (files rev comment)
+  (vc-mtn-command nil 0 files "commit" "-m" comment))
+
+(defun vc-mtn-find-version (file rev buffer)
+  (vc-mtn-command buffer 0 file "cat" "-r" rev))
+
+;; (defun vc-mtn-checkout (file &optional editable rev)
+;;   )
+
+(defun vc-mtn-revert (file &optional contents-done)
+  (unless contents-done
+    (vc-mtn-command nil 0 file "revert")))
+
+;; (defun vc-mtn-roolback (files)
+;;   )
+
+(defun vc-mtn-print-log (files &optional buffer)
+  (vc-mtn-command buffer 0 files "log"))
+
+(define-derived-mode vc-mtn-log-view-mode log-view-mode "Mtn-Log-View"
+  ;; TODO: Not sure what to do about file markers for now.
+  (set (make-local-variable 'log-view-file-re) "\\'\\`")
+  ;; TODO: Use a more precise regexp than "[ |/]+" to avoid false positives
+  ;; in the ChangeLog text.
+  (set (make-local-variable 'log-view-message-re)
+       "^[ |/]+Revision: \\([0-9a-f]+\\)")
+  (require 'add-log)                    ;For change-log faces.
+  (set (make-local-variable 'log-view-font-lock-keywords)
+       (append log-view-font-lock-keywords
+               '(("^[ |]+Author: \\(.*\\)" (1 'change-log-email))
+                 ("^[ |]+Date: \\(.*\\)" (1 'change-log-date-face))))))
+
+;; (defun vc-mtn-show-log-entry (version)
+;;   )
+
+(defun vc-mtn-wash-log (file))
+
+(defalias 'vc-mtn-diff-tree 'vc-mtn-diff)
+(defun vc-mtn-diff (files &optional rev1 rev2 buffer)
+  (apply 'vc-mtn-command (or buffer "*vc-diff*") 1 files "diff"
+         (append (if rev1 (list "-r" rev1)) (if rev2 (list "-r" rev2)))))
+
+(defun vc-mtn-annotate-command (file buf &optional rev)
+  (apply 'vc-mtn-command buf 0 file "annotate"
+         (if rev (list "-r" rev))))
+
+(defconst vc-mtn-annotate-full-re
+  "^ *\\([0-9a-f]+\\)\\.* by [^ ]+ \\([0-9]+\\)-\\([0-9]+\\)-\\([0-9]+\\): ")
+(defconst vc-mtn-annotate-any-re
+  (concat "^\\(?: +: \\|" vc-mtn-annotate-full-re "\\)"))
+
+(defun vc-mtn-annotate-time ()
+  (when (looking-at vc-mtn-annotate-any-re)
+    (goto-char (match-end 0))
+    (let ((year (match-string 2)))
+      (if (not year)
+          ;; Look for the date on a previous line.
+          (save-excursion
+            (get-text-property (1- (previous-single-property-change
+                                    (point) 'vc-mtn-time nil (point-min)))
+                               'vc-mtn-time))
+        (let ((time (vc-annotate-convert-time
+                     (encode-time 0 0 0
+                                  (string-to-number (match-string 4))
+                                  (string-to-number (match-string 3))
+                                  (string-to-number year)
+                                  t))))
+          (let ((inhibit-read-only t)
+                (inhibit-modification-hooks t))
+            (put-text-property (match-beginning 0) (match-end 0)
+                               'vc-mtn-time time))
+          time)))))
+
+(defun vc-mtn-annotate-extract-revision-at-line ()
+  (save-excursion
+    (when (or (looking-at vc-mtn-annotate-full-re)
+              (re-search-backward vc-mtn-annotate-full-re nil t))
+      (match-string 1))))
+
+;;; Revision completion.
+
+(defun vc-mtn-list-tags ()
+  (with-temp-buffer
+    (vc-mtn-command t 0 nil "list" "tags")
+    (goto-char (point-min))
+    (let ((tags ()))
+      (while (re-search-forward "^[^ ]+" nil t)
+        (push (match-string 0) tags))
+      tags)))
+
+(defun vc-mtn-list-branches ()
+  (with-temp-buffer
+    (vc-mtn-command t 0 nil "list" "branches")
+    (goto-char (point-min))
+    (let ((branches ()))
+      (while (re-search-forward "^.+" nil t)
+        (push (match-string 0) branches))
+      branches)))
+
+(defun vc-mtn-list-revision-ids (prefix)
+  (with-temp-buffer
+    (vc-mtn-command t 0 nil "complete" "revision" prefix)
+    (goto-char (point-min))
+    (let ((ids ()))
+      (while (re-search-forward "^.+" nil t)
+        (push (match-string 0) ids))
+      ids)))
+
+(defun vc-mtn-revision-completion-table (file)
+  ;; TODO: Implement completion for for selectors
+  ;; TODO: Implement completion for composite selectors.
+  (lexical-let ((file file))
+    (lambda (string pred action)
+      (cond
+       ;; "Tag" selectors.
+       ((string-match "\\`t:" string)
+        (complete-with-action action
+                              (mapcar (lambda (tag) (concat "t:" tag))
+                                      (vc-mtn-list-tags))
+                              string pred))
+       ;; "Branch" selectors.
+       ((string-match "\\`b:" string)
+        (complete-with-action action
+                              (mapcar (lambda (tag) (concat "b:" tag))
+                                      (vc-mtn-list-branches))
+                              string pred))
+       ;; "Head" selectors.  Not sure how they differ from "branch" selectors.
+       ((string-match "\\`h:" string)
+        (complete-with-action action
+                              (mapcar (lambda (tag) (concat "h:" tag))
+                                      (vc-mtn-list-branches))
+                              string pred))
+       ;; "ID" selectors.
+       ((string-match "\\`i:" string)
+        (complete-with-action action
+                              (mapcar (lambda (tag) (concat "i:" tag))
+                                      (vc-mtn-list-revision-ids
+                                       (substring string (match-end 0))))
+                              string pred))
+       (t
+        (complete-with-action action
+                              '("t:" "b:" "h:" "i:"
+                                ;; Completion not implemented for these.
+                                "a:" "c:" "d:" "e:" "l:")
+                              string pred))))))
+        
+        
+
+(provide 'vc-mtn)
+
+;; arch-tag: 2b89ffbc-cbb8-405a-9080-2eafd4becb70
+;;; vc-mtn.el ends here