ctest_update: Add CTEST_UPDATE_VERSION_ONLY option to only note the version

This allows ctest_update to get the current version without actually
changing the repository.  This is useful when using Jenkins or an
external project to update the source to a specific version, but you
still want the current version to show up in CDash.

2 files changed, 13 insertions, 4 deletions

diff --git a/Source/CTest/cmCTestUpdateCommand.cxx b/Source/CTest/cmCTestUpdateCommand.cxx
index 5408a8a..f87466d 100644
--- a/Source/CTest/cmCTestUpdateCommand.cxx
+++ b/Source/CTest/cmCTestUpdateCommand.cxx
@@ -56,6 +56,8 @@ cmCTestGenericHandler* cmCTestUpdateCommand::InitializeHandler()
   this->CTest->SetCTestConfigurationFromCMakeVariable(this->Makefile,
     "GITUpdateCustom", "CTEST_GIT_UPDATE_CUSTOM");
   this->CTest->SetCTestConfigurationFromCMakeVariable(this->Makefile,
+    "UpdateVersionOnly", "CTEST_UPDATE_VERSION_ONLY");
+  this->CTest->SetCTestConfigurationFromCMakeVariable(this->Makefile,
     "HGCommand", "CTEST_HG_COMMAND");
   this->CTest->SetCTestConfigurationFromCMakeVariable(this->Makefile,
     "HGUpdateOptions", "CTEST_HG_UPDATE_OPTIONS");
diff --git a/Source/CTest/cmCTestVC.cxx b/Source/CTest/cmCTestVC.cxx
index f89fa2b..15f796f 100644
--- a/Source/CTest/cmCTestVC.cxx
+++ b/Source/CTest/cmCTestVC.cxx
@@ -166,10 +166,17 @@ void cmCTestVC::CleanupImpl()
 //----------------------------------------------------------------------------
 bool cmCTestVC::Update()
 {
-  this->NoteOldRevision();
-  this->Log << "--- Begin Update ---\n";
-  bool result = this->UpdateImpl();
-  this->Log << "--- End Update ---\n";
+  bool result = true;
+  // if update version only is on then do not actually update,
+  // just note the current version and finish
+  if(!cmSystemTools::IsOn(
+       this->CTest->GetCTestConfiguration("UpdateVersionOnly").c_str()))
+    {
+    this->NoteOldRevision();
+    this->Log << "--- Begin Update ---\n";
+    result = this->UpdateImpl();
+    this->Log << "--- End Update ---\n";
+    }
   this->NoteNewRevision();
   return result;
 }