Export: Factor out file generation steps into helpers

Do not actually generate any content in the driving code paths.
Use helpers for that.

1 files changed, 27 insertions, 18 deletions

diff --git a/Source/cmExportFileGenerator.cxx b/Source/cmExportFileGenerator.cxx
index 23c77d9..c4c7d7d 100644
--- a/Source/cmExportFileGenerator.cxx
+++ b/Source/cmExportFileGenerator.cxx
@@ -96,24 +96,8 @@ bool cmExportFileGenerator::GenerateImportFile()
   }
   std::ostream& os = *foutPtr;
 
-  // Protect that file against use with older CMake versions.
-  /* clang-format off */
-  os << "# Generated by CMake\n\n";
-  os << "if(\"${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}\" LESS 2.5)\n"
-     << "   message(FATAL_ERROR \"CMake >= 2.6.0 required\")\n"
-     << "endif()\n";
-  /* clang-format on */
-
-  // Isolate the file policy level.
-  // We use 2.6 here instead of the current version because newer
-  // versions of CMake should be able to export files imported by 2.6
-  // until the import format changes.
-  /* clang-format off */
-  os << "cmake_policy(PUSH)\n"
-     << "cmake_policy(VERSION 2.6)\n";
-  /* clang-format on */
-
   // Start with the import file header.
+  this->GeneratePolicyHeaderCode(os);
   this->GenerateImportHeaderCode(os);
 
   // Create all the imported targets.
@@ -121,7 +105,7 @@ bool cmExportFileGenerator::GenerateImportFile()
 
   // End with the import file footer.
   this->GenerateImportFooterCode(os);
-  os << "cmake_policy(POP)\n";
+  this->GeneratePolicyFooterCode(os);
 
   return result;
 }
@@ -832,6 +816,31 @@ void cmExportFileGenerator::SetImportLinkProperty(
   properties[prop] = link_entries;
 }
 
+void cmExportFileGenerator::GeneratePolicyHeaderCode(std::ostream& os)
+{
+  // Protect that file against use with older CMake versions.
+  /* clang-format off */
+  os << "# Generated by CMake\n\n";
+  os << "if(\"${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}\" LESS 2.5)\n"
+     << "   message(FATAL_ERROR \"CMake >= 2.6.0 required\")\n"
+     << "endif()\n";
+  /* clang-format on */
+
+  // Isolate the file policy level.
+  // We use 2.6 here instead of the current version because newer
+  // versions of CMake should be able to export files imported by 2.6
+  // until the import format changes.
+  /* clang-format off */
+  os << "cmake_policy(PUSH)\n"
+     << "cmake_policy(VERSION 2.6)\n";
+  /* clang-format on */
+}
+
+void cmExportFileGenerator::GeneratePolicyFooterCode(std::ostream& os)
+{
+  os << "cmake_policy(POP)\n";
+}
+
 void cmExportFileGenerator::GenerateImportHeaderCode(std::ostream& os,
                                                      const std::string& config)
 {