import os
import os.path
import shutil


def getBuildifier():
  return os.getenv("BUILDIFIER_BIN") or (os.path.expandvars("$GOPATH/bin/buildifier")
                                         if os.getenv("GOPATH") else shutil.which("buildifier"))


def getBuildozer():
  return os.getenv("BUILDOZER_BIN") or (os.path.expandvars("$GOPATH/bin/buildozer")
                                        if os.getenv("GOPATH") else shutil.which("buildozer"))