diff --git a/.clang-format b/.clang-format
new file mode 100644
index 0000000..6027082
--- /dev/null
+++ b/.clang-format
@@ -0,0 +1,13 @@
+---
+Language: Cpp
+BasedOnStyle: Google
+ColumnLimit: 80
+IndentWidth: 2
+ContinuationIndentWidth: 4
+---
+Language: Java
+BasedOnStyle: Google
+ColumnLimit: 100
+IndentWidth: 4
+ContinuationIndentWidth: 8
+...
diff --git a/PREUPLOAD.cfg b/PREUPLOAD.cfg
new file mode 100644
index 0000000..6be6e5f
--- /dev/null
+++ b/PREUPLOAD.cfg
@@ -0,0 +1,6 @@
+[Builtin Hooks]
+clang_format = true
+
+[Builtin Hooks Options]
+clang_format = --commit ${PREUPLOAD_COMMIT} --style file --extensions c,h,cc,cpp,java
+