Move version control related files to the "vc" subdirectory.

* add-log.el, cvs-status.el, diff.el, diff-mode.el, ediff-diff.el,
* ediff.el, ediff-help.el, ediff-hook.el, ediff-init.el,
* ediff-merg.el, ediff-mult.el, ediff-ptch.el, ediff-util.el,
* ediff-vers.el, ediff-wind.el, emerge.el, log-edit.el, log-view.el,
* pcvs-defs.el, pcvs.el, pcvs-info.el, pcvs-parse.el, pcvs-util.el,
* smerge-mode.el, vc-annotate.el, vc-arch.el, vc-bzr.el, vc-cvs.el,
* vc-dav.el, vc-dir.el, vc-dispatcher.el, vc.el, vc-git.el,
* vc-hg.el, vc-hooks.el, vc-mtn.el, vc-rcs.el, vc-sccs.el, vc-svn.el:
Move files to the "vc" subdirectory.

1 files changed, 747 insertions, 0 deletions

diff --git a/lisp/vc/vc-svn.el b/lisp/vc/vc-svn.el
new file mode 100644
index 00000000000..cd43d425af1
--- /dev/null
+++ b/lisp/vc/vc-svn.el
@@ -0,0 +1,747 @@
+;;; vc-svn.el --- non-resident support for Subversion version-control
+
+;; Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
+;;   Free Software Foundation, Inc.
+
+;; Author:      FSF (see vc.el for full credits)
+;; Maintainer:  Stefan Monnier <monnier@gnu.org>
+
+;; This file is part of GNU Emacs.
+
+;; GNU Emacs 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 of the License, or
+;; (at your option) any later version.
+
+;; GNU Emacs 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.  If not, see <http://www.gnu.org/licenses/>.
+
+;;; Commentary:
+
+;; Sync'd with Subversion's vc-svn.el as of revision 5801. but this version
+;; has been extensively modified since to handle filesets.
+
+;;; Code:
+
+(eval-when-compile
+  (require 'vc))
+
+;; Clear up the cache to force vc-call to check again and discover
+;; new functions when we reload this file.
+(put 'SVN 'vc-functions nil)
+
+;;;
+;;; Customization options
+;;;
+
+;; FIXME there is also svnadmin.
+(defcustom vc-svn-program "svn"
+  "Name of the SVN executable."
+  :type 'string
+  :group 'vc)
+
+(defcustom vc-svn-global-switches nil
+  "Global switches to pass to any SVN command."
+  :type '(choice (const :tag "None" nil)
+		 (string :tag "Argument String")
+		 (repeat :tag "Argument List"
+			 :value ("")
+			 string))
+  :version "22.1"
+  :group 'vc)
+
+(defcustom vc-svn-register-switches nil
+  "Switches for registering a file into SVN.
+A string or list of strings passed to the checkin program by
+\\[vc-register].  If nil, use the value of `vc-register-switches'.
+If t, use no switches."
+  :type '(choice (const :tag "Unspecified" nil)
+		 (const :tag "None" t)
+		 (string :tag "Argument String")
+		 (repeat :tag "Argument List" :value ("") string))
+  :version "22.1"
+  :group 'vc)
+
+(defcustom vc-svn-diff-switches
+  t			   ;`svn' doesn't support common args like -c or -b.
+  "String or list of strings specifying extra switches for svn diff under VC.
+If nil, use the value of `vc-diff-switches' (or `diff-switches'),
+together with \"-x --diff-cmd=diff\" (since svn diff does not
+support the default \"-c\" value of `diff-switches').  If you
+want to force an empty list of arguments, use t."
+  :type '(choice (const :tag "Unspecified" nil)
+		 (const :tag "None" t)
+		 (string :tag "Argument String")
+		 (repeat :tag "Argument List"
+			 :value ("")
+			 string))
+  :version "22.1"
+  :group 'vc)
+
+(defcustom vc-svn-header (or (cdr (assoc 'SVN vc-header-alist)) '("\$Id\$"))
+  "Header keywords to be inserted by `vc-insert-headers'."
+  :version "22.1"
+  :type '(repeat string)
+  :group 'vc)
+
+;; We want to autoload it for use by the autoloaded version of
+;; vc-svn-registered, but we want the value to be compiled at startup, not
+;; at dump time.
+;; ;;;###autoload
+(defconst vc-svn-admin-directory
+  (cond ((and (memq system-type '(cygwin windows-nt ms-dos))
+	      (getenv "SVN_ASP_DOT_NET_HACK"))
+	 "_svn")
+	(t ".svn"))
+  "The name of the \".svn\" subdirectory or its equivalent.")
+
+;;; Properties of the backend
+
+(defun vc-svn-revision-granularity () 'repository)
+(defun vc-svn-checkout-model (files) 'implicit)
+
+;;;
+;;; State-querying functions
+;;;
+
+;;; vc-svn-admin-directory is generally not defined when the
+;;; autoloaded function is called.
+
+;;;###autoload (defun vc-svn-registered (f)
+;;;###autoload   (let ((admin-dir (cond ((and (eq system-type 'windows-nt)
+;;;###autoload                                (getenv "SVN_ASP_DOT_NET_HACK"))
+;;;###autoload                           "_svn")
+;;;###autoload                          (t ".svn"))))
+;;;###autoload     (when (file-readable-p (expand-file-name
+;;;###autoload                             (concat admin-dir "/entries")
+;;;###autoload                             (file-name-directory f)))
+;;;###autoload       (load "vc-svn")
+;;;###autoload       (vc-svn-registered f))))
+
+(defun vc-svn-registered (file)
+  "Check if FILE is SVN registered."
+  (when (file-readable-p (expand-file-name (concat vc-svn-admin-directory
+						   "/entries")
+					   (file-name-directory file)))
+    (with-temp-buffer
+      (cd (file-name-directory file))
+      (let* (process-file-side-effects
+	     (status
+             (condition-case nil
+                 ;; Ignore all errors.
+                 (vc-svn-command t t file "status" "-v")
+               ;; Some problem happened.  E.g. We can't find an `svn'
+               ;; executable.  We used to only catch `file-error' but when
+               ;; the process is run on a remote host via Tramp, the error
+               ;; is only reported via the exit status which is turned into
+               ;; an `error' by vc-do-command.
+               (error nil))))
+        (when (eq 0 status)
+	  (let ((parsed (vc-svn-parse-status file)))
+	    (and parsed (not (memq parsed '(ignored unregistered))))))))))
+
+(defun vc-svn-state (file &optional localp)
+  "SVN-specific version of `vc-state'."
+  (let (process-file-side-effects)
+    (setq localp (or localp (vc-stay-local-p file 'SVN)))
+    (with-temp-buffer
+      (cd (file-name-directory file))
+      (vc-svn-command t 0 file "status" (if localp "-v" "-u"))
+      (vc-svn-parse-status file))))
+
+(defun vc-svn-state-heuristic (file)
+  "SVN-specific state heuristic."
+  (vc-svn-state file 'local))
+
+;; FIXME it would be better not to have the "remote" argument,
+;; but to distinguish the two output formats based on content.
+(defun vc-svn-after-dir-status (callback &optional remote)
+  (let ((state-map '((?A . added)
+                     (?C . conflict)
+                     (?I . ignored)
+                     (?M . edited)
+                     (?D . removed)
+                     (?R . removed)
+                     (?? . unregistered)
+                     ;; This is what vc-svn-parse-status does.
+                     (?~ . edited)))
+	(re (if remote "^\\(.\\)...... \\([ *]\\) +\\(?:[-0-9]+\\)?   \\(.*\\)$"
+	      ;; Subexp 2 is a dummy in this case, so the numbers match.
+	      "^\\(.\\)....\\(.\\) \\(.*\\)$"))
+       result)
+    (goto-char (point-min))
+    (while (re-search-forward re nil t)
+      (let ((state (cdr (assq (aref (match-string 1) 0) state-map)))
+	    (filename (match-string 3)))
+	(and remote (string-equal (match-string 2) "*")
+	     ;; FIXME are there other possible combinations?
+	     (cond ((eq state 'edited) (setq state 'needs-merge))
+		   ((not state) (setq state 'needs-update))))
+	(when (and state (not (string= "." filename)))
+         (setq result (cons (list filename state) result)))))
+    (funcall callback result)))
+
+(defun vc-svn-dir-status (dir callback)
+  "Run 'svn status' for DIR and update BUFFER via CALLBACK.
+CALLBACK is called as (CALLBACK RESULT BUFFER), where
+RESULT is a list of conses (FILE . STATE) for directory DIR."
+  ;; FIXME should this rather be all the files in dir?
+  ;; FIXME: the vc-stay-local-p logic below is disabled, it ends up
+  ;; calling synchronously (vc-svn-registered DIR) => calling svn status -v DIR
+  ;; which is VERY SLOW for big trees and it makes emacs
+  ;; completely unresponsive during that time.
+  (let* ((local (and nil (vc-stay-local-p dir 'SVN)))
+	 (remote (or t (not local) (eq local 'only-file))))
+    (vc-svn-command (current-buffer) 'async nil "status"
+		    (if remote "-u"))
+  (vc-exec-after
+     `(vc-svn-after-dir-status (quote ,callback) ,remote))))
+
+(defun vc-svn-dir-status-files (dir files default-state callback)
+  (apply 'vc-svn-command (current-buffer) 'async nil "status" files)
+  (vc-exec-after
+   `(vc-svn-after-dir-status (quote ,callback))))
+
+(defun vc-svn-dir-extra-headers (dir)
+  "Generate extra status headers for a Subversion working copy."
+  (let (process-file-side-effects)
+    (vc-svn-command "*vc*" 0 nil "info"))
+  (let ((repo
+	 (save-excursion
+	   (and (progn
+		  (set-buffer "*vc*")
+		  (goto-char (point-min))
+		  (re-search-forward "Repository Root: *\\(.*\\)" nil t))
+		(match-string 1)))))
+    (concat
+     (cond (repo
+	    (concat
+	     (propertize "Repository : " 'face 'font-lock-type-face)
+	     (propertize repo 'face 'font-lock-variable-name-face)))
+	   (t "")))))
+
+(defun vc-svn-working-revision (file)
+  "SVN-specific version of `vc-working-revision'."
+  ;; There is no need to consult RCS headers under SVN, because we
+  ;; get the workfile version for free when we recognize that a file
+  ;; is registered in SVN.
+  (vc-svn-registered file)
+  (vc-file-getprop file 'vc-working-revision))
+
+;; vc-svn-mode-line-string doesn't exist because the default implementation
+;; works just fine.
+
+(defun vc-svn-previous-revision (file rev)
+  (let ((newrev (1- (string-to-number rev))))
+    (when (< 0 newrev)
+      (number-to-string newrev))))
+
+(defun vc-svn-next-revision (file rev)
+  (let ((newrev (1+ (string-to-number rev))))
+    ;; The "working revision" is an uneasy conceptual fit under Subversion;
+    ;; we use it as the upper bound until a better idea comes along.  If the
+    ;; workfile version W coincides with the tree's latest revision R, then
+    ;; this check prevents a "no such revision: R+1" error.  Otherwise, it
+    ;; inhibits showing of W+1 through R, which could be considered anywhere
+    ;; from gracious to impolite.
+    (unless (< (string-to-number (vc-file-getprop file 'vc-working-revision))
+               newrev)
+      (number-to-string newrev))))
+
+
+;;;
+;;; State-changing functions
+;;;
+
+(defun vc-svn-create-repo ()
+  "Create a new SVN repository."
+  (vc-do-command "*vc*" 0 "svnadmin" '("create" "SVN"))
+  (vc-do-command "*vc*" 0 vc-svn-program '(".")
+		 "checkout" (concat "file://" default-directory "SVN")))
+
+(defun vc-svn-register (files &optional rev comment)
+  "Register FILES into the SVN version-control system.
+The COMMENT argument is ignored  This does an add but not a commit.
+Passes either `vc-svn-register-switches' or `vc-register-switches'
+to the SVN command."
+  (apply 'vc-svn-command nil 0 files "add" (vc-switches 'SVN 'register)))
+
+(defun vc-svn-responsible-p (file)
+  "Return non-nil if SVN thinks it is responsible for FILE."
+  (file-directory-p (expand-file-name vc-svn-admin-directory
+				      (if (file-directory-p file)
+					  file
+					(file-name-directory file)))))
+
+(defalias 'vc-svn-could-register 'vc-svn-responsible-p
+  "Return non-nil if FILE could be registered in SVN.
+This is only possible if SVN is responsible for FILE's directory.")
+
+(defun vc-svn-checkin (files rev comment &optional extra-args-ignored)
+  "SVN-specific version of `vc-backend-checkin'."
+  (if rev (error "Committing to a specific revision is unsupported in SVN"))
+  (let ((status (apply
+                 'vc-svn-command nil 1 files "ci"
+                 (nconc (list "-m" comment) (vc-switches 'SVN 'checkin)))))
+    (set-buffer "*vc*")
+    (goto-char (point-min))
+    (unless (equal status 0)
+      ;; Check checkin problem.
+      (cond
+       ((search-forward "Transaction is out of date" nil t)
+        (mapc (lambda (file) (vc-file-setprop file 'vc-state 'needs-merge))
+	      files)
+        (error (substitute-command-keys
+                (concat "Up-to-date check failed: "
+                        "type \\[vc-next-action] to merge in changes"))))
+       (t
+        (pop-to-buffer (current-buffer))
+        (goto-char (point-min))
+        (shrink-window-if-larger-than-buffer)
+        (error "Check-in failed"))))
+    ;; Update file properties
+    ;; (vc-file-setprop
+    ;;  file 'vc-working-revision
+    ;;  (vc-parse-buffer "^\\(new\\|initial\\) revision: \\([0-9.]+\\)" 2))
+    ))
+
+(defun vc-svn-find-revision (file rev buffer)
+  "SVN-specific retrieval of a specified version into a buffer."
+  (let (process-file-side-effects)
+    (apply 'vc-svn-command
+	   buffer 0 file
+	   "cat"
+	   (and rev (not (string= rev ""))
+		(concat "-r" rev))
+	   (vc-switches 'SVN 'checkout))))
+
+(defun vc-svn-checkout (file &optional editable rev)
+  (message "Checking out %s..." file)
+  (with-current-buffer (or (get-file-buffer file) (current-buffer))
+    (vc-svn-update file editable rev (vc-switches 'SVN 'checkout)))
+  (vc-mode-line file 'SVN)
+  (message "Checking out %s...done" file))
+
+(defun vc-svn-update (file editable rev switches)
+  (if (and (file-exists-p file) (not rev))
+      ;; If no revision was specified, there's nothing to do.
+      nil
+    ;; Check out a particular version (or recreate the file).
+    (vc-file-setprop file 'vc-working-revision nil)
+    (apply 'vc-svn-command nil 0 file
+	   "--non-interactive"		; bug#4280
+	   "update"
+	   (cond
+	    ((null rev) "-rBASE")
+	    ((or (eq rev t) (equal rev "")) nil)
+	    (t (concat "-r" rev)))
+	   switches)))
+
+(defun vc-svn-delete-file (file)
+  (vc-svn-command nil 0 file "remove"))
+
+(defun vc-svn-rename-file (old new)
+  (vc-svn-command nil 0 new "move" (file-relative-name old)))
+
+(defun vc-svn-revert (file &optional contents-done)
+  "Revert FILE to the version it was based on."
+  (unless contents-done
+    (vc-svn-command nil 0 file "revert")))
+
+(defun vc-svn-merge (file first-version &optional second-version)
+  "Merge changes into current working copy of FILE.
+The changes are between FIRST-VERSION and SECOND-VERSION."
+  (vc-svn-command nil 0 file
+                 "merge"
+		 "-r" (if second-version
+			(concat first-version ":" second-version)
+		      first-version))
+  (vc-file-setprop file 'vc-state 'edited)
+  (with-current-buffer (get-buffer "*vc*")
+    (goto-char (point-min))
+    (if (looking-at "C  ")
+        1				; signal conflict
+      0)))				; signal success
+
+(defun vc-svn-merge-news (file)
+  "Merge in any new changes made to FILE."
+  (message "Merging changes into %s..." file)
+  ;; (vc-file-setprop file 'vc-working-revision nil)
+  (vc-file-setprop file 'vc-checkout-time 0)
+  (vc-svn-command nil 0 file "update")
+  ;; Analyze the merge result reported by SVN, and set
+  ;; file properties accordingly.
+  (with-current-buffer (get-buffer "*vc*")
+    (goto-char (point-min))
+    ;; get new working revision
+    (if (re-search-forward
+	 "^\\(Updated to\\|At\\) revision \\([0-9]+\\)" nil t)
+	(vc-file-setprop file 'vc-working-revision (match-string 2))
+      (vc-file-setprop file 'vc-working-revision nil))
+    ;; get file status
+    (goto-char (point-min))
+    (prog1
+        (if (looking-at "At revision")
+            0 ;; there were no news; indicate success
+          (if (re-search-forward
+               ;; Newer SVN clients have 3 columns of chars (one for the
+               ;; file's contents, then second for its properties, and the
+               ;; third for lock-grabbing info), before the 2 spaces.
+               ;; We also used to match the filename in column 0 without any
+               ;; meta-info before it, but I believe this can never happen.
+               (concat "^\\(\\([ACGDU]\\)\\(.[B ]\\)?  \\)"
+                       (regexp-quote (file-name-nondirectory file)))
+               nil t)
+              (cond
+               ;; Merge successful, we are in sync with repository now
+               ((string= (match-string 2) "U")
+                (vc-file-setprop file 'vc-state 'up-to-date)
+                (vc-file-setprop file 'vc-checkout-time
+                                 (nth 5 (file-attributes file)))
+                0);; indicate success to the caller
+               ;; Merge successful, but our own changes are still in the file
+               ((string= (match-string 2) "G")
+                (vc-file-setprop file 'vc-state 'edited)
+                0);; indicate success to the caller
+               ;; Conflicts detected!
+               (t
+                (vc-file-setprop file 'vc-state 'edited)
+                1);; signal the error to the caller
+               )
+            (pop-to-buffer "*vc*")
+            (error "Couldn't analyze svn update result")))
+      (message "Merging changes into %s...done" file))))
+
+(defun vc-svn-modify-change-comment (files rev comment)
+  "Modify the change comments for a specified REV.
+You must have ssh access to the repository host, and the directory Emacs
+uses locally for temp files must also be writable by you on that host.
+This is only supported if the repository access method is either file://
+or svn+ssh://."
+  (let (tempfile host remotefile directory fileurl-p)
+    (with-temp-buffer
+      (vc-do-command (current-buffer) 0 vc-svn-program nil "info")
+      (goto-char (point-min))
+      (unless (re-search-forward "Repository Root: \\(file://\\(/.*\\)\\)\\|\\(svn\\+ssh://\\([^/]+\\)\\(/.*\\)\\)" nil t)
+	(error "Repository information is unavailable"))
+      (if (match-string 1)
+	  (progn
+	    (setq fileurl-p t)
+	    (setq directory (match-string 2)))
+	(setq host (match-string 4))
+	(setq directory (match-string 5))
+	(setq remotefile (concat host ":" tempfile))))
+    (with-temp-file (setq tempfile (make-temp-file user-mail-address))
+      (insert comment))
+    (if fileurl-p
+	;; Repository Root is a local file.
+	(progn
+	  (unless (vc-do-command
+		   "*vc*" 0 "svnadmin" nil
+		   "setlog" "--bypass-hooks" directory
+		   "-r" rev (format "%s" tempfile))
+	    (error "Log edit failed"))
+	  (delete-file tempfile))
+
+      ;; Remote repository, using svn+ssh.
+      (unless (vc-do-command "*vc*" 0 "scp" nil "-q" tempfile remotefile)
+	(error "Copy of comment to %s failed" remotefile))
+      (unless (vc-do-command
+	       "*vc*" 0 "ssh" nil "-q" host
+	       (format "svnadmin setlog --bypass-hooks %s -r %s %s; rm %s"
+		       directory rev tempfile tempfile))
+	(error "Log edit failed")))))
+
+;;;
+;;; History functions
+;;;
+
+(defvar log-view-per-file-logs)
+
+(define-derived-mode vc-svn-log-view-mode log-view-mode "SVN-Log-View"
+  (require 'add-log)
+  (set (make-local-variable 'log-view-per-file-logs) nil))
+
+(defun vc-svn-print-log (files buffer &optional shortlog start-revision limit)
+  "Get change log(s) associated with FILES."
+  (save-current-buffer
+    (vc-setup-buffer buffer)
+    (let ((inhibit-read-only t))
+      (goto-char (point-min))
+      (if files
+	  (dolist (file files)
+		  (insert "Working file: " file "\n")
+		  (apply
+		   'vc-svn-command
+		   buffer
+		   'async
+		   ;; (if (and (= (length files) 1) (vc-stay-local-p file 'SVN)) 'async 0)
+		   (list file)
+		   "log"
+		   (append
+		    (list
+		     (if start-revision
+			 (format "-r%s" start-revision)
+		       ;; By default Subversion only shows the log up to the
+		       ;; working revision, whereas we also want the log of the
+		       ;; subsequent commits.  At least that's what the
+		       ;; vc-cvs.el code does.
+		       "-rHEAD:0"))
+		    (when limit (list "--limit" (format "%s" limit))))))
+	;; Dump log for the entire directory.
+	(apply 'vc-svn-command buffer 0 nil "log"
+	       (append
+		(list
+		 (if start-revision (format "-r%s" start-revision) "-rHEAD:0"))
+		(when limit (list "--limit" (format "%s" limit)))))))))
+
+(defun vc-svn-diff (files &optional oldvers newvers buffer)
+  "Get a difference report using SVN between two revisions of fileset FILES."
+  (and oldvers
+       (not newvers)
+       files
+       (catch 'no
+	 (dolist (f files)
+	   (or (equal oldvers (vc-working-revision f))
+	       (throw 'no nil)))
+	 t)
+       ;; Use nil rather than the current revision because svn handles
+       ;; it better (i.e. locally).  Note that if _any_ of the files
+       ;; has a different revision, we fetch the lot, which is
+       ;; obviously sub-optimal.
+       (setq oldvers nil))
+  (let* ((switches
+	    (if vc-svn-diff-switches
+		(vc-switches 'SVN 'diff)
+	      (list "--diff-cmd=diff" "-x"
+		    (mapconcat 'identity (vc-switches nil 'diff) " "))))
+	   (async (and (not vc-disable-async-diff)
+                       (vc-stay-local-p files 'SVN)
+		       (or oldvers newvers)))) ; Svn diffs those locally.
+      (apply 'vc-svn-command buffer
+	     (if async 'async 0)
+	     files "diff"
+	     (append
+	      switches
+	      (when oldvers
+		(list "-r" (if newvers (concat oldvers ":" newvers)
+			     oldvers)))))
+      (if async 1		      ; async diff => pessimistic assumption
+	;; For some reason `svn diff' does not return a useful
+	;; status w.r.t whether the diff was empty or not.
+	(buffer-size (get-buffer buffer)))))
+
+;;;
+;;; Tag system
+;;;
+
+(defun vc-svn-create-tag (dir name branchp)
+  "Assign to DIR's current revision a given NAME.
+If BRANCHP is non-nil, the name is created as a branch (and the current
+workspace is immediately moved to that new branch).
+NAME is assumed to be a URL."
+  (vc-svn-command nil 0 dir "copy" name)
+  (when branchp (vc-svn-retrieve-tag dir name nil)))
+
+(defun vc-svn-retrieve-tag (dir name update)
+  "Retrieve a tag at and below DIR.
+NAME is the name of the tag; if it is empty, do a `svn update'.
+If UPDATE is non-nil, then update (resynch) any affected buffers.
+NAME is assumed to be a URL."
+  (vc-svn-command nil 0 dir "switch" name)
+  ;; FIXME: parse the output and obey `update'.
+  )
+
+;;;
+;;; Miscellaneous
+;;;
+
+;; Subversion makes backups for us, so don't bother.
+;; (defun vc-svn-make-version-backups-p (file)
+;;   "Return non-nil if version backups should be made for FILE."
+;;  (vc-stay-local-p file 'SVN))
+
+(defun vc-svn-check-headers ()
+  "Check if the current file has any headers in it."
+  (save-excursion
+    (goto-char (point-min))
+    (re-search-forward "\\$[A-Za-z\300-\326\330-\366\370-\377]+\
+\\(: [\t -#%-\176\240-\377]*\\)?\\$" nil t)))
+
+
+;;;
+;;; Internal functions
+;;;
+
+(defun vc-svn-command (buffer okstatus file-or-list &rest flags)
+  "A wrapper around `vc-do-command' for use in vc-svn.el.
+The difference to vc-do-command is that this function always invokes `svn',
+and that it passes `vc-svn-global-switches' to it before FLAGS."
+  (apply 'vc-do-command (or buffer "*vc*") okstatus vc-svn-program file-or-list
+         (if (stringp vc-svn-global-switches)
+             (cons vc-svn-global-switches flags)
+           (append vc-svn-global-switches
+                   flags))))
+
+(defun vc-svn-repository-hostname (dirname)
+  (with-temp-buffer
+    (let ((coding-system-for-read
+	   (or file-name-coding-system
+	       default-file-name-coding-system)))
+      (vc-insert-file (expand-file-name (concat vc-svn-admin-directory
+						"/entries")
+					dirname)))
+    (goto-char (point-min))
+    (when (re-search-forward
+	   ;; Old `svn' used name="svn:this_dir", newer use just name="".
+	   (concat "name=\"\\(?:svn:this_dir\\)?\"[\n\t ]*"
+		   "\\(?:[-a-z]+=\"[^\"]*\"[\n\t ]*\\)*?"
+		   "url=\"\\(?1:[^\"]+\\)\""
+                   ;; Yet newer ones don't use XML any more.
+                   "\\|^\ndir\n[0-9]+\n\\(?1:.*\\)") nil t)
+      ;; This is not a hostname but a URL.  This may actually be considered
+      ;; as a feature since it allows vc-svn-stay-local to specify different
+      ;; behavior for different modules on the same server.
+      (match-string 1))))
+
+(defun vc-svn-resolve-when-done ()
+  "Call \"svn resolved\" if the conflict markers have been removed."
+  (save-excursion
+    (goto-char (point-min))
+    (unless (re-search-forward "^<<<<<<< " nil t)
+      (vc-svn-command nil 0 buffer-file-name "resolved")
+      ;; Remove the hook so that it is not called multiple times.
+      (remove-hook 'after-save-hook 'vc-svn-resolve-when-done t))))
+
+;; Inspired by vc-arch-find-file-hook.
+(defun vc-svn-find-file-hook ()
+  (when (eq ?C (vc-file-getprop buffer-file-name 'vc-svn-status))
+    ;; If the file is marked as "conflicted", then we should try and call
+    ;; "svn resolved" when applicable.
+    (if (save-excursion
+          (goto-char (point-min))
+          (re-search-forward "^<<<<<<< " nil t))
+        ;; There are conflict markers.
+        (progn
+          (smerge-start-session)
+          (add-hook 'after-save-hook 'vc-svn-resolve-when-done nil t))
+      ;; There are no conflict markers.  This is problematic: maybe it means
+      ;; the conflict has been resolved and we should immediately call "svn
+      ;; resolved", or it means that the file's type does not allow Svn to
+      ;; use conflict markers in which case we don't really know what to do.
+      ;; So let's just punt for now.
+      nil)
+    (message "There are unresolved conflicts in this file")))
+
+(defun vc-svn-parse-status (&optional filename)
+  "Parse output of \"svn status\" command in the current buffer.
+Set file properties accordingly.  Unless FILENAME is non-nil, parse only
+information about FILENAME and return its status."
+  (let (file status)
+    (goto-char (point-min))
+    (while (re-search-forward
+            ;; Ignore the files with status X.
+	    "^\\(?:\\?\\|[ ACDGIMR!~][ MC][ L][ +][ S]..\\([ *]\\) +\\([-0-9]+\\) +\\([0-9?]+\\) +\\([^ ]+\\)\\) +" nil t)
+      ;; If the username contains spaces, the output format is ambiguous,
+      ;; so don't trust the output's filename unless we have to.
+      (setq file (or filename
+                     (expand-file-name
+                      (buffer-substring (point) (line-end-position)))))
+      (setq status (char-after (line-beginning-position)))
+      (if (eq status ??)
+	  (vc-file-setprop file 'vc-state 'unregistered)
+	;; Use the last-modified revision, so that searching in vc-print-log
+	;; output works.
+	(vc-file-setprop file 'vc-working-revision (match-string 3))
+        ;; Remember Svn's own status.
+        (vc-file-setprop file 'vc-svn-status status)
+	(vc-file-setprop
+	 file 'vc-state
+	 (cond
+	  ((eq status ?\ )
+	   (if (eq (char-after (match-beginning 1)) ?*)
+	       'needs-update
+             (vc-file-setprop file 'vc-checkout-time
+                              (nth 5 (file-attributes file)))
+	     'up-to-date))
+	  ((eq status ?A)
+	   ;; If the file was actually copied, (match-string 2) is "-".
+	   (vc-file-setprop file 'vc-working-revision "0")
+	   (vc-file-setprop file 'vc-checkout-time 0)
+	   'added)
+	  ((eq status ?C)
+	   (vc-file-setprop file 'vc-state 'conflict))
+	  ((eq status '?M)
+	   (if (eq (char-after (match-beginning 1)) ?*)
+	       'needs-merge
+	     'edited))
+	  ((eq status ?I)
+	   (vc-file-setprop file 'vc-state 'ignored))
+	  ((memq status '(?D ?R))
+	   (vc-file-setprop file 'vc-state 'removed))
+	  (t 'edited)))))
+    (when filename (vc-file-getprop filename 'vc-state))))
+
+(defun vc-svn-valid-symbolic-tag-name-p (tag)
+  "Return non-nil if TAG is a valid symbolic tag name."
+  ;; According to the SVN manual, a valid symbolic tag must start with
+  ;; an uppercase or lowercase letter and can contain uppercase and
+  ;; lowercase letters, digits, `-', and `_'.
+  (and (string-match "^[a-zA-Z]" tag)
+       (not (string-match "[^a-z0-9A-Z-_]" tag))))
+
+(defun vc-svn-valid-revision-number-p (tag)
+  "Return non-nil if TAG is a valid revision number."
+  (and (string-match "^[0-9]" tag)
+       (not (string-match "[^0-9]" tag))))
+
+;; Support for `svn annotate'
+
+(defun vc-svn-annotate-command (file buf &optional rev)
+  (vc-svn-command buf 'async file "annotate" (if rev (concat "-r" rev))))
+
+(defun vc-svn-annotate-time-of-rev (rev)
+  ;; Arbitrarily assume 10 commmits per day.
+  (/ (string-to-number rev) 10.0))
+
+(defvar vc-annotate-parent-rev)
+
+(defun vc-svn-annotate-current-time ()
+  (vc-svn-annotate-time-of-rev vc-annotate-parent-rev))
+
+(defconst vc-svn-annotate-re "[ \t]*\\([0-9]+\\)[ \t]+[^\t ]+ ")
+
+(defun vc-svn-annotate-time ()
+  (when (looking-at vc-svn-annotate-re)
+    (goto-char (match-end 0))
+    (vc-svn-annotate-time-of-rev (match-string 1))))
+
+(defun vc-svn-annotate-extract-revision-at-line ()
+  (save-excursion
+    (beginning-of-line)
+    (if (looking-at vc-svn-annotate-re) (match-string 1))))
+
+(defun vc-svn-revision-table (files)
+  (let ((vc-svn-revisions '()))
+    (with-current-buffer "*vc*"
+      (vc-svn-command nil 0 files "log" "-q")
+      (goto-char (point-min))
+      (forward-line)
+      (let ((start (point-min))
+            (loglines (buffer-substring-no-properties (point-min)
+                                                      (point-max))))
+        (while (string-match "^r\\([0-9]+\\) " loglines)
+          (push (match-string 1 loglines) vc-svn-revisions)
+          (setq start (+ start (match-end 0)))
+          (setq loglines (buffer-substring-no-properties start (point-max)))))
+    vc-svn-revisions)))
+
+(provide 'vc-svn)
+
+;; arch-tag: 02f10c68-2b4d-453a-90fc-1eee6cfb268d
+;;; vc-svn.el ends here