Format code with clang-format

.clang-format

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+# Clang-Format configuration file for automatically formatting source code
+---
+BasedOnStyle: Google
+IndentWidth: 4
+TabWidth: 4
+...

format_code.sh

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+#!/bin/bash
+
+# Bash script to automatically format LCM source code (currently C and C++).
+# Requires `clang-format` utilily, which is part of the LLVM project. More
+# information can be found here: https://clang.llvm.org/docs/ClangFormat.html
+#
+# To install `clang-format` on Ubuntu do:
+#
+#     $ sudo apt install clang-format
+#
+# On Windows 10 you are recommended to use the Linux Subsystem. You can install
+# the Linux Subsystem by doing the following:
+#
+#   1. Open PowerShell as Administrator, enter the command:
+#
+#     PS C:\> Enable-WindowsOptionalFeature -Online -FeatureName Microsoft-Windows-Subsystem-Linux
+#
+#   2. Restart the computer.
+#   3. Go to the Microsoft Store, install the Ubuntu app.
+#
+# This script does not format Java, Python, or Lua source code. At the moment,
+# it only formats C and C++ sources, i.e., *.h, *.c, *.hpp, and *.cpp. It only
+# formats code in certain directories, see below for the full list.
+
+LCM_ROOT="$(cd $(dirname "$0") && pwd)"
+
+function format_c_cpp_dir_r {
+    find "$1" -regex '.*\.\(c\|h\)\(pp\)?' -print0 | xargs -0 clang-format -i
+}
+
+#format_c_cpp_dir_r "${LCM_ROOT}/lcm"
+#format_c_cpp_dir_r "${LCM_ROOT}/lcmgen"
+#format_c_cpp_dir_r "${LCM_ROOT}/lcm-examples"
+#format_c_cpp_dir_r "${LCM_ROOT}/lcm-test"
+#format_c_cpp_dir_r "${LCM_ROOT}/lcm-logger"
+#format_c_cpp_dir_r "${LCM_ROOT}/lcm-python"
+#format_c_cpp_dir_r "${LCM_ROOT}/lcm-lua"
+#format_c_cpp_dir_r "${LCM_ROOT}/liblcm-test"
+
+exit 0