.clang-format and code format script

.clang-format

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+BasedOnStyle: google
+IndentWidth: 4
+TabWidth: 4
+ColumnLimit: 120
+UseTab: Never
+AllowShortFunctionsOnASingleLine: All
+AllowShortIfStatementsOnASingleLine: false
+AllowShortLoopsOnASingleLine: false
+BreakBeforeBraces: Allman
+AccessModifierOffset: -4
+DerivePointerAlignment: false
+PointerAlignment: Left

code_format.sh

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+#!/bin/bash
+CLANG_FORMAT_PATH=$(which clang-format)
+
+ if [ -z "$CLANG_FORMAT_PATH" ]; then
+    echo "clang-format not found."
+    exit 1
+fi
+
+PROJECT_ROOT=$(dirname "$0")
+
+cpp_files=$(find $PROJECT_ROOT -name '*.cpp' -or -name '*.h' )
+
+for file in $cpp_files; do
+    echo "Formatting $file"
+    $CLANG_FORMAT_PATH -i $file
+done
+
+echo "All .cpp or .h files have been formatted."