Adding support for clang-format (#94)

cmake/FindClangFormat.cmake

@@ -0,0 +1,34 @@
+# Find Clang format
+# 
+# 
+if(NOT ClangFormat_BIN_NAME)
+	set(ClangFormat_BIN_NAME clang-format)
+endif()
+
+# if custom path check there first
+if(ClangFormat_ROOT_DIR)
+    find_program(ClangFormat_BIN 
+        NAMES
+        ${ClangFormat_BIN_NAME}
+        PATHS
+        "${ClangFormat_ROOT_DIR}"
+        NO_DEFAULT_PATH)
+endif()
+
+find_program(ClangFormat_BIN NAMES ${ClangFormat_BIN_NAME})
+
+include(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(
+    ClangFormat
+    DEFAULT_MSG 
+    ClangFormat_BIN)
+
+mark_as_advanced(
+    ClangFormat_BIN)
+
+if(ClangFormat_FOUND)
+	# A CMake script to find all source files and setup clang-format targets for them
+	include(clang-format)
+else()
+    message("clang-format not found. Not setting up format targets")
+endif()

cmake/clang-format.cmake

@@ -0,0 +1,78 @@
+# A CMake script to find all source files and setup clang-format targets for them
+
+# Find all source files
+set(ClangFormat_CXX_FILE_EXTENSIONS ${ClangFormat_CXX_FILE_EXTENSIONS} *.cpp *.h *.cxx *.hxx *.hpp *.cc *.ipp)
+file(GLOB_RECURSE ALL_SOURCE_FILES ${ClangFormat_CXX_FILE_EXTENSIONS})
+
+# Don't include some common build folders
+set(ClangFormat_EXCLUDE_PATTERNS ${ClangFormat_EXCLUDE_PATTERNS} "/CMakeFiles/" "cmake")
+
+# get all project files file
+foreach (SOURCE_FILE ${ALL_SOURCE_FILES}) 
+    foreach (EXCLUDE_PATTERN ${ClangFormat_EXCLUDE_PATTERNS})
+        string(FIND ${SOURCE_FILE} ${EXCLUDE_PATTERN} EXCLUDE_FOUND) 
+        if (NOT ${EXCLUDE_FOUND} EQUAL -1) 
+            list(REMOVE_ITEM ALL_SOURCE_FILES ${SOURCE_FILE})
+        endif () 
+    endforeach ()
+endforeach ()
+
+add_custom_target(format
+    COMMENT "Running clang-format to change files"
+    COMMAND ${ClangFormat_BIN}
+    -style=file
+    -i
+    ${ALL_SOURCE_FILES}
+)
+
+#put back i 
+add_custom_target(format-check
+    COMMENT "Checking clang-format changes"
+    # Use ! to negate the result for correct output
+    COMMAND !
+    ${ClangFormat_BIN}
+    -style=file
+    -output-replacements-xml
+    ${ALL_SOURCE_FILES}
+    | grep -q "replacement offset" 
+)
+
+
+add_custom_target(
+    sf
+    COMMAND
+    echo ${ALL_SOURCE_FILES}
+)
+
+
+
+add_custom_target( list
+COMMAND     
+    foreach (SOURCE_FILE ${ALL_SOURCE_FILES}) 
+        message(${SOURCE_FILE})
+    endforeach ()
+)
+
+# # Get the path to this file
+# get_filename_component(_clangcheckpath ${CMAKE_CURRENT_LIST_FILE} PATH)
+# # have at least one here by default
+# set(CHANGED_FILE_EXTENSIONS ".cpp")
+# foreach(EXTENSION ${ClangFormat_CXX_FILE_EXTENSIONS})
+#     set(CHANGED_FILE_EXTENSIONS "${CHANGED_FILE_EXTENSIONS},${EXTENSION}" )
+# endforeach()
+
+# set(EXCLUDE_PATTERN_ARGS)
+# foreach(EXCLUDE_PATTERN ${ClangFormat_EXCLUDE_PATTERNS})
+#     list(APPEND EXCLUDE_PATTERN_ARGS "--exclude=${EXCLUDE_PATTERN}")
+# endforeach()
+
+# # call the script to check changed files in git
+# add_custom_target(format-check-changed
+#     COMMENT "Checking changed files in git"
+#     WORKING_DIRECTORY ${CMAKE_SOURCE_DIR}
+#     COMMAND ${_clangcheckpath}/../scripts/clang-format-check-changed.py 
+#     --file-extensions \"${CHANGED_FILE_EXTENSIONS}\"
+#     ${EXCLUDE_PATTERN_ARGS}
+#     --clang-format-bin ${ClangFormat_BIN}
+# )
+