cmCTestSVN: Add a LoadExternal() function and an ExternalParser class

This call 'svn status' and parse the result to get the list of externals
repositories.  The external repositories found are added to the
Repositories list.

Source/CTest/cmCTestSVN.cxx

@@ -481,6 +481,56 @@ void cmCTestSVN::WriteXMLGlobal(std::ostream& xml)
   xml << "\t<SVNPath>" << this->RootInfo->Base << "</SVNPath>\n";
 }
 
+//----------------------------------------------------------------------------
+class cmCTestSVN::ExternalParser: public cmCTestVC::LineParser
+{
+public:
+  ExternalParser(cmCTestSVN* svn, const char* prefix): SVN(svn)
+    {
+    this->SetLog(&svn->Log, prefix);
+    this->RegexExternal.compile("^X..... +(.+)$");
+    }
+private:
+  cmCTestSVN* SVN;
+  cmsys::RegularExpression RegexExternal;
+  bool ProcessLine()
+    {
+    if(this->RegexExternal.find(this->Line))
+      {
+      this->DoPath(this->RegexExternal.match(1));
+      }
+    return true;
+    }
+
+  void DoPath(std::string const& path)
+    {
+    // Get local path relative to the source directory
+    std::string local_path;
+    if(path.size() > this->SVN->SourceDirectory.size() &&
+       strncmp(path.c_str(), this->SVN->SourceDirectory.c_str(),
+               this->SVN->SourceDirectory.size()) == 0)
+      {
+      local_path = path.c_str() + this->SVN->SourceDirectory.size() + 1;
+      }
+    else
+      {
+      local_path = path;
+      }
+    this->SVN->Repositories.push_back( SVNInfo(local_path.c_str()) );
+    }
+};
+
+//----------------------------------------------------------------------------
+void cmCTestSVN::LoadExternals()
+{
+  // Run "svn status" to get the list of external repositories
+  const char* svn = this->CommandLineTool.c_str();
+  const char* svn_status[] = {svn, "status", 0};
+  ExternalParser out(this, "external-out> ");
+  OutputLogger err(this->Log, "external-err> ");
+  this->RunChild(svn_status, &out, &err);
+}
+
 //----------------------------------------------------------------------------
 std::string cmCTestSVN::SVNInfo::BuildLocalPath(std::string const& path) const
 {

Source/CTest/cmCTestSVN.h

@@ -68,6 +68,7 @@ private:
   SVNInfo* RootInfo;
 
   std::string LoadInfo(SVNInfo& svninfo);
+  void LoadExternals();
   void LoadModifications();
   void LoadRevisions();
   void LoadRevisions(SVNInfo& svninfo);
@@ -84,10 +85,12 @@ private:
   class LogParser;
   class StatusParser;
   class UpdateParser;
+  class ExternalParser;
   friend class InfoParser;
   friend class LogParser;
   friend class StatusParser;
   friend class UpdateParser;
+  friend class ExternalParser;
 };
 
 #endif