scripts/install/install_clang_format

#!/bin/bash
#
# Copyright 2016-present the Material Components for iOS authors. All Rights Reserved.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

# Install clang-format.
#
# This is not required for anyone but core team members.

DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"

"$DIR/install_brew"

set -o errexit

# Respect existing installs first.
if ! git clang-format -h >/dev/null 2>&1; then
  echo "git clang-format not available..."

  git_clang_format_path="/usr/local/bin/git-clang-format"

  if [ ! -f "$git_clang_format_path" ]; then
    TMP_PATH=$(mktemp -d)
    TMP_FILE="$TMP_PATH/git-clang-format"
    echo "Downloading..."
    curl -s https://raw.githubusercontent.com/llvm-mirror/clang/master/tools/clang-format/git-clang-format -o "$TMP_FILE"

    echo "Requesting sudo to move $TMP_FILE to $git_clang_format_path"
    sudo mv "$TMP_FILE" "$git_clang_format_path"
  fi

  # Ensure permissions are set correctly.
  echo "Setting executable permissions on $git_clang_format_path..."
  chmod +x "$git_clang_format_path"
fi