#!/bin/bash

# Copyright 2018 Google LLC

#

# Use of this source code is governed by an MIT-style

# license that can be found in the LICENSE file or at

# https://opensource.org/licenses/MIT.

# ==============================================================================

# This script applies google-style clang format on all TypeScript (.ts) files

# within a certain scope.

#

# Usage examples:

# 1. Format all .ts files touched by this change (unstaged or staged in git).

# clang_format_ts.sh

#

# 2. Format all .ts files under the source tree.

# clang_format_ts.sh -a

#

# 3. Format specific files.

# clang_format_ts.sh src/types.ts

set -e

FILE_SCOPE=""

if [[ "$#" -gt 0 ]]; then

while true; do

if [[ -z "$1" ]]; then

break

fi

if [[ "$1" == "-a" ]]; then

if [[ -z "${FILE_SCOPE}" ]]; then

FILE_SCOPE="__all__"

else

echo "ERROR: -a flag should not be used with file names"

exit 1

fi

else

if [[ "${FILE_SCOPE}" != "__all__" ]]; then

FILE_SCOPE="${FILE_SCOPE} $1"

else

echo "ERROR: -a flag should not be used with file names"

exit 1

fi

fi

shift

done

else

FILE_SCOPE="__touched__"

fi

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

CLANG_FORMAT_PREFIX="${SCRIPT_DIR}/../node_modules/.bin/clang-format -i --verbose --style=google"

if [[ "${FILE_SCOPE}" == "__touched__" ]]; then

TOUCHED_TS_FILES="$(git status --porcelain | grep '.*\.ts$' | sed s/^...//)"

if [[ -z "${TOUCHED_TS_FILES}" ]]; then

exit 0

else

pushd "${SCRIPT_DIR}/.." > /dev/null

for TS_FILE in ${TOUCHED_TS_FILES}; do

if [[ -f ${TS_FILE} ]]; then

${CLANG_FORMAT_PREFIX} "${TS_FILE}"

fi

done

popd > /dev/null

fi

elif [[ "${FILE_SCOPE}" == "__all__" ]]; then

ALL_TS_FILES="$(find "${SCRIPT_DIR}/../src" "${SCRIPT_DIR}/../demos" -name '*.ts')"

for TS_FILE in ${ALL_TS_FILES}; do

${CLANG_FORMAT_PREFIX} "${TS_FILE}"

done

else

${CLANG_FORMAT_PREFIX} ${FILE_SCOPE}

fi