RecursiveGroupingWithFileSet

# \brief ディレクトリを再帰的に走査し，全てのディレクトリからファイルを探索する
# \param[in] root_dir 探索対象のルートディレクトリ．このディレクトリからの相対パスがフィルタとして追加される．
# \param[in] find_directory 探索ディレクトリが保存されたリストの変数名
# \param[out] header_files ヘッダーファイルを保存する変数名
# \param[out] source_files ソースファイルを保存する変数名
# \param[in] optional 除外するディレクトリの指定
FUNCTION(RecursiveGroupingWithFileSet root_dir find_directory header_files source_files )

  FILE(GLOB_RECURSE local_headers ${root_dir}/*.hpp ${root_dir}/*.hxx ${root_dir}/*.h)
  FILE(GLOB_RECURSE local_sources ${root_dir}/*.cpp ${root_dir}/*.cxx ${root_dir}/*.c ${root_dir}/*.inl)
  
  IF(${ARGC} GREATER 4)
    MATH(EXPR arg_num "${ARGC} - 1")
    FOREACH(i RANGE 4 ${arg_num})
      LIST(GET ARGV ${i} tmp)
      LIST(APPEND ignore_directories ${tmp})
    ENDFOREACH()
    
    FOREACH(file ${local_headers})
      SET(BREAK_FLAG OFF)
      FOREACH(ig_dir ${ignore_directories})
        FILE(RELATIVE_PATH relative_path ${ig_dir} ${file})
        IF(NOT ${relative_path} MATCHES "^\\.\\.")
          SET(BREAK_FLAG ON)
          BREAK()
        ENDIF()
      ENDFOREACH()
      
      IF(NOT ${BREAK_FLAG})
        LIST(APPEND tmp_headers ${file})
      ELSE()
        MESSAGE(Remove Header:${file})
      ENDIF()
    ENDFOREACH()
    
    FOREACH(file ${local_sources})
      SET(BREAK_FLAG OFF)
      FOREACH(ig_dir ${ignore_directories})
        FILE(RELATIVE_PATH relative_path ${ig_dir} ${file})
        IF(NOT ${relative_path} MATCHES "^\\.\\.")
          SET(BREAK_FLAG ON)
          BREAK()
        ENDIF()
      ENDFOREACH()
      
      IF(NOT ${BREAK_FLAG})
        LIST(APPEND tmp_sources ${file})
      ELSE()
        MESSAGE(Remove Source:${file})
      ENDIF()
    ENDFOREACH()
    
    SET(local_sources ${tmp_sources})
    SET(local_headers ${tmp_headers})
  ENDIF()

  
  SET(${source_files} ${local_sources} PARENT_SCOPE)
  SET(${header_files} ${local_headers} PARENT_SCOPE)
  
  
  FOREACH(file ${local_sources})
#    FOREACH(dir ${${find_directory}})
      file(RELATIVE_PATH relative ${root_dir} ${file})
      
      STRING(REGEX MATCHALL "[^/]+" filters "${relative}")
      LIST(LENGTH filters output_length)
      MATH(EXPR iteration "${output_length} - 2")
      
      IF(${iteration} LESS 0)
        continue()
      ENDIF()
      
      
      SET(group_string "")
      FOREACH(i RANGE 0 ${iteration})
        LIST(GET filters ${i} g)    
        set(group_string "${group_string}\\${g}")
#        MESSAGE(${i},${output_length}:${g})
      ENDFOREACH()
      SOURCE_GROUP("Source Files${group_string}" FILES ${file})
      #    ENDFOREACH()
  ENDFOREACH()

  
  FOREACH(file ${local_headers})
#    FOREACH(dir ${${find_directory}})
      file(RELATIVE_PATH relative ${root_dir} ${file})
      
      STRING(REGEX MATCHALL "[^/]+" filters "${relative}")
      LIST(LENGTH filters output_length)
      MATH(EXPR iteration "${output_length} - 2")
      
      IF(${iteration} LESS 0)
        continue()
      ENDIF()
      
      SET(group_string "")
      FOREACH(i RANGE 0 ${iteration})
        LIST(GET filters ${i} g)    
        set(group_string "${group_string}\\${g}")
#        MESSAGE(${i},${output_length}:${g})
      ENDFOREACH()
      SOURCE_GROUP("Header Files${group_string}" FILES ${file})
      #    ENDFOREACH()
  ENDFOREACH()
ENDFUNCTION()