File: clang-format-js

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#!/bin/bash
# Copyright 2016 The Chromium Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

if [[ -z "$@" || "$1" == "-h" || "$1" == "--help" ]]; then
  echo >&2 "Usage: `basename $0` <paths_to_clang_format...>"
  exit 1
fi

which clang-format >/dev/null 2>&1
if [[ $? -ne 0 ]]; then
  echo >&2 "Sorry, but you need \`clang-format\` on your \$PATH to run this script"
  exit 1
fi

for arg in ${@}; do
  echo "Processing ${arg}"

  dir=`readlink -f "${arg}"`
  if [[ -d "${dir}" ]]; then
    dir="${dir}/stripped-by-dirname-on-next-line"
  fi
  while dir=`dirname ${dir}`; do
    if [[ -f "${dir}/.clang-format" ]]; then
      echo "Using style from: ${dir}/.clang-format"
      break
    elif [[ "${dir}" == "/" ]]; then
      echo >&2 "No .clang-format file found. Make one at or above ${arg}"
      exit 1
    fi
  done

  js_files=$(git ls-tree -r --name-only HEAD -- "${arg}" | grep '\.js$')

  for js_file in ${js_files}; do
    echo "Formatting ${js_file}"
    clang-format -i -style=file "$js_file"
  done
done