node.js module which wraps the native clang-format executable.
$ npm install -g clang-format
$ clang-format -help
If your platform isn't yet supported, you can create the native binary from the latest upstream clang sources, make sure it is stripped and optimized (should be about 1.4MB as of mid-2015) and send a pull request to add it.
For Linux, compile a statically linked MinSizeRel build:
cmake -G Ninja -DCMAKE_BUILD_TYPE=MinSizeRel -DLLVM_BUILD_STATIC=true ..
ninja clang-format
For Mac OS X, static linking is not required.