ENH: Report file names relative to source dir

This teaches cmCTestLaunch to report source files that lie under the top
source directory relative to the top.

Source/CTest/cmCTestBuildHandler.cxx

@@ -752,7 +752,7 @@ private:
   cmCTestBuildHandler* Handler;
   cmCTest* CTest;
 
-  void WriteScrapeMatchers();
+  void WriteLauncherConfig();
   void WriteScrapeMatchers(const char* purpose,
                            std::vector<std::string> const& matchers);
 };
@@ -784,7 +784,7 @@ cmCTestBuildHandler::LaunchHelper::LaunchHelper(cmCTestBuildHandler* handler):
       {
       // Enable launcher fragments.
       cmSystemTools::MakeDirectory(launchDir.c_str());
-      this->WriteScrapeMatchers();
+      this->WriteLauncherConfig();
       std::string launchEnv = "CTEST_LAUNCH_LOGS=";
       launchEnv += launchDir;
       cmSystemTools::PutEnv(launchEnv.c_str());
@@ -808,12 +808,19 @@ cmCTestBuildHandler::LaunchHelper::~LaunchHelper()
 }
 
 //----------------------------------------------------------------------------
-void cmCTestBuildHandler::LaunchHelper::WriteScrapeMatchers()
+void cmCTestBuildHandler::LaunchHelper::WriteLauncherConfig()
 {
   this->WriteScrapeMatchers("Warning",
                             this->Handler->ReallyCustomWarningMatches);
   this->WriteScrapeMatchers("WarningSuppress",
                             this->Handler->ReallyCustomWarningExceptions);
+
+  // Give some testing configuration information to the launcher.
+  std::string fname = this->Handler->CTestLaunchDir;
+  fname += "/CTestLaunchConfig.cmake";
+  cmGeneratedFileStream fout(fname.c_str());
+  std::string srcdir = this->CTest->GetCTestConfiguration("SourceDirectory");
+  fout << "set(CTEST_SOURCE_DIRECTORY \"" << srcdir << "\")\n";
 }
 
 //----------------------------------------------------------------------------

Source/CTest/cmCTestLaunch.cxx

@@ -292,6 +292,7 @@ int cmCTestLaunch::Run()
     return this->ExitCode;
     }
 
+  this->LoadConfig();
   this->WriteXML();
 
   return this->ExitCode;
@@ -414,8 +415,21 @@ void cmCTestLaunch::WriteXMLAction(std::ostream& fxml)
   // SourceFile
   if(!this->OptionSource.empty())
     {
+    std::string source = this->OptionSource;
+    cmSystemTools::ConvertToUnixSlashes(source);
+
+    // If file is in source tree use its relative location.
+    if(cmSystemTools::FileIsFullPath(this->SourceDir.c_str()) &&
+       cmSystemTools::FileIsFullPath(source.c_str()) &&
+       cmSystemTools::IsSubDirectory(source.c_str(),
+                                     this->SourceDir.c_str()))
+      {
+      source = cmSystemTools::RelativePath(this->SourceDir.c_str(),
+                                           source.c_str());
+      }
+
     fxml << "\t\t\t<SourceFile>"
-         << cmXMLSafe(this->OptionSource)
+         << cmXMLSafe(source)
          << "</SourceFile>\n";
     }
 
@@ -678,3 +692,26 @@ int cmCTestLaunch::Main(int argc, const char* const argv[])
   cmCTestLaunch self(argc, argv);
   return self.Run();
 }
+
+//----------------------------------------------------------------------------
+#include "cmGlobalGenerator.h"
+#include "cmLocalGenerator.h"
+#include "cmMakefile.h"
+#include "cmake.h"
+#include <cmsys/auto_ptr.hxx>
+void cmCTestLaunch::LoadConfig()
+{
+  cmake cm;
+  cmGlobalGenerator gg;
+  gg.SetCMakeInstance(&cm);
+  cmsys::auto_ptr<cmLocalGenerator> lg(gg.CreateLocalGenerator());
+  cmMakefile* mf = lg->GetMakefile();
+  std::string fname = this->LogDir;
+  fname += "CTestLaunchConfig.cmake";
+  if(cmSystemTools::FileExists(fname.c_str()) &&
+     mf->ReadListFile(0, fname.c_str()))
+    {
+    this->SourceDir = mf->GetSafeDefinition("CTEST_SOURCE_DIRECTORY");
+    cmSystemTools::ConvertToUnixSlashes(this->SourceDir);
+    }
+}

Source/CTest/cmCTestLaunch.h

@@ -100,6 +100,10 @@ private:
   void WriteXMLResult(std::ostream& fxml);
   void WriteXMLLabels(std::ostream& fxml);
   void DumpFileToXML(std::ostream& fxml, std::string const& fname);
+
+  // Configuration
+  void LoadConfig();
+  std::string SourceDir;
 };
 
 #endif