VS: Add option to import .props in .vcxproj.filters files

Adds new target property VS_FILTER_PROPS

Fixes: #25948

Auxiliary/vim/syntax/cmake.vim

@@ -450,6 +450,7 @@ syn keyword cmakeProperty contained
             \ VS_STARTUP_PROJECT
             \ VS_TOOL_OVERRIDE
             \ VS_USER_PROPS
+            \ VS_FILTER_PROPS
             \ VS_WINDOWS_TARGET_PLATFORM_MIN_VERSION
             \ VS_WINRT_COMPONENT
             \ VS_WINRT_EXTENSIONS

Help/manual/cmake-properties.7.rst

@@ -448,6 +448,7 @@ Properties on Targets
    /prop_tgt/VS_SOURCE_SETTINGS_tool
    /prop_tgt/VS_USE_DEBUG_LIBRARIES
    /prop_tgt/VS_USER_PROPS
+   /prop_tgt/VS_FILTER_PROPS
    /prop_tgt/VS_WINDOWS_TARGET_PLATFORM_MIN_VERSION
    /prop_tgt/VS_WINRT_COMPONENT
    /prop_tgt/VS_WINRT_REFERENCES

Help/prop_tgt/VS_FILTER_PROPS.rst

@@ -0,0 +1,10 @@
+VS_FILTER_PROPS
+---------------
+
+.. versionadded:: 3.30
+
+Sets the filter props file to be included in the visual studio
+C++ project filter file.
+
+The ``*.filter.props`` files can be used for Visual Studio wide
+configuration which is independent from cmake.

Help/release/dev/vs-filter-props.rst

@@ -0,0 +1,6 @@
+vs-filter-props
+---------------
+
+* A :prop_tgt:`VS_FILTER_PROPS` target property was added to tell
+  :ref:`Visual Studio Generators` for VS 2010 and above to use a
+  custom MSBuild filter ``.props`` file.

Source/cmVisualStudio10TargetGenerator.cxx

@@ -2074,6 +2074,18 @@ void cmVisualStudio10TargetGenerator::WriteGroups()
                    "gif;jpg;jpeg;jpe;resx;tiff;tif;png;wav;mfcribbon-ms");
       }
     }
+    {
+      if (cmValue p = this->GeneratorTarget->GetProperty("VS_FILTER_PROPS")) {
+        auto props = *p;
+        if (!props.empty()) {
+          ConvertToWindowsSlash(props);
+          Elem(e0, "Import")
+            .Attribute("Project", props)
+            .Attribute("Condition", cmStrCat("exists('", props, "')"))
+            .Attribute("Label", "LocalAppDataPlatform");
+        }
+      }
+    }
   }
   fout << '\n';
 

Tests/RunCMake/VS10Project/VsCustomProps-check.cmake

@@ -1,25 +1,30 @@
-set(vcProjectFile "${RunCMake_TEST_BINARY_DIR}/foo.vcxproj")
-if(NOT EXISTS "${vcProjectFile}")
-  set(RunCMake_TEST_FAILED "Project file ${vcProjectFile} does not exist.")
-  return()
-endif()
+macro(check_custom_prop suffix)
+  set(vcProjectFile "${RunCMake_TEST_BINARY_DIR}/foo.vcxproj${suffix}")
+  if(NOT EXISTS "${vcProjectFile}")
+    set(RunCMake_TEST_FAILED "Project file ${vcProjectFile} does not exist.")
+    return()
+  endif()
 
-set(importFound FALSE)
+  set(importFound FALSE)
 
-set(props_file "${RunCMake_SOURCE_DIR}/my.props")
-file(TO_NATIVE_PATH "${props_file}" check_file)
-file(STRINGS "${vcProjectFile}" lines)
-foreach(line IN LISTS lines)
-  if(line MATCHES "^ *<Import Project=\"([^\"]+)\".*Label=\"([^\"]+)\".*$")
-    if("${CMAKE_MATCH_1}" STREQUAL "${check_file}" AND
-       "${CMAKE_MATCH_2}" STREQUAL "LocalAppDataPlatform")
-        message(STATUS "foo.vcxproj is importing ${check_file}")
-        set(importFound TRUE)
+  set(props_file "${RunCMake_SOURCE_DIR}/my.props")
+  file(TO_NATIVE_PATH "${props_file}" check_file)
+  file(STRINGS "${vcProjectFile}" lines)
+  foreach(line IN LISTS lines)
+    if(line MATCHES "^ *<Import Project=\"([^\"]+)\".*Label=\"([^\"]+)\".*$")
+      if("${CMAKE_MATCH_1}" STREQUAL "${check_file}" AND
+        "${CMAKE_MATCH_2}" STREQUAL "LocalAppDataPlatform")
+          message(STATUS "foo.vcxproj${suffix} is importing ${check_file}")
+          set(importFound TRUE)
+      endif()
     endif()
+  endforeach()
+
+  if(NOT importFound)
+    set(RunCMake_TEST_FAILED "Import of custom .props file not found.")
+    return()
   endif()
-endforeach()
+endmacro()
 
-if(NOT importFound)
-  set(RunCMake_TEST_FAILED "Import of custom .props file not found.")
-  return()
-endif()
+check_custom_prop("")
+check_custom_prop(".filters")

Tests/RunCMake/VS10Project/VsCustomProps.cmake

@@ -4,4 +4,5 @@ add_library(foo foo.cpp)
 set(props_file "${CMAKE_CURRENT_SOURCE_DIR}/my.props")
 
 set_target_properties(foo PROPERTIES
-    VS_USER_PROPS "${props_file}")
+    VS_USER_PROPS "${props_file}"
+    VS_FILTER_PROPS "${props_file}")