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diff --git a/Source/CTest/cmCTestGlobalVC.h b/Source/CTest/cmCTestGlobalVC.h
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+++ b/Source/CTest/cmCTestGlobalVC.h
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+/*============================================================================
+  CMake - Cross Platform Makefile Generator
+  Copyright 2000-2009 Kitware, Inc.
+
+  Distributed under the OSI-approved BSD License (the "License");
+  see accompanying file Copyright.txt for details.
+
+  This software is distributed WITHOUT ANY WARRANTY; without even the
+  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+  See the License for more information.
+============================================================================*/
+#ifndef cmCTestGlobalVC_h
+#define cmCTestGlobalVC_h
+
+#include "cmCTestVC.h"
+
+/** \class cmCTestGlobalVC
+ * \brief Base class for handling globally-versioned trees
+ *
+ */
+class cmCTestGlobalVC: public cmCTestVC
+{
+public:
+  /** Construct with a CTest instance and update log stream.  */
+  cmCTestGlobalVC(cmCTest* ctest, std::ostream& log);
+
+  virtual ~cmCTestGlobalVC();
+
+protected:
+  // Implement cmCTestVC internal API.
+  virtual bool WriteXMLUpdates(std::ostream& xml);
+
+  /** Represent a vcs-reported action for one path in a revision.  */
+  struct Change
+  {
+    char Action;
+    std::string Path;
+    Change(char a = '?'): Action(a) {}
+  };
+
+  // Update status for files in each directory.
+  class Directory: public std::map<cmStdString, File> {};
+  std::map<cmStdString, Directory> Dirs;
+
+  // Old and new repository revisions.
+  std::string OldRevision;
+  std::string NewRevision;
+
+  // Information known about old revision.
+  Revision PriorRev;
+
+  // Information about revisions from a svn log.
+  std::list<Revision> Revisions;
+
+  virtual const char* LocalPath(std::string const& path);
+
+  virtual void DoRevision(Revision const& revision,
+                          std::vector<Change> const& changes);
+  virtual void DoModification(PathStatus status, std::string const& path);
+  virtual void LoadModifications() = 0;
+  virtual void LoadRevisions() = 0;
+
+  virtual void WriteXMLGlobal(std::ostream& xml);
+  void WriteXMLDirectory(std::ostream& xml, std::string const& path,
+                         Directory const& dir);
+};
+
+#endif