add cmake target for ruff and ruff-format

CMakeLists.txt

@@ -73,3 +73,6 @@ add_subdirectory(python)
 
 #--- create uninstall target ---------------------------------------------------
 include(cmake/EDM4HEPUninstall.cmake)
+
+#--- code format targets -------------------------------------------------------
+include(cmake/pythonFormat.cmake)

cmake/pythonFormat.cmake

@@ -0,0 +1,25 @@
+# Additional target to run python linters and formatters on python files
+#
+# Requires ruff to be available in the environment
+
+# Get all our Python files
+file(GLOB_RECURSE ALL_PYTHON_FILES ${PROJECT_SOURCE_DIR}/python/*.py
+  ${PROJECT_SOURCE_DIR}/scripts/*.py ${PROJECT_SOURCE_DIR}/test/*.py)
+
+find_program(RUFF_EXECUTABLE ruff)
+if(RUFF_EXECUTABLE)
+    add_custom_target(
+        ruff
+        COMMAND ${RUFF_EXECUTABLE}
+        check --force-exclude ${ALL_PYTHON_FILES}
+    )
+    set_target_properties(ruff PROPERTIES EXCLUDE_FROM_ALL TRUE)
+    add_custom_target(
+        ruff-format
+        COMMAND ${RUFF_EXECUTABLE}
+        format --force-exclude ${ALL_PYTHON_FILES}
+    )
+    set_target_properties(ruff-format PROPERTIES EXCLUDE_FROM_ALL TRUE)
+else()
+    message(STATUS "Failed to find ruff executable - no target to run ruff can be set")
+endif()