check_license.sh

#!/bin/bash

# Copyright © 2016 Asteris, LLC
#
# 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.

SRC_DIRS=$(find $(realpath .) -type d -maxdepth 1 -not -ipath '*/vendor' -not -ipath '*/.git' -not -ipath $(realpath .))
FILES=$(find ${SRC_DIRS} -type f -name '*.go')

LICENSE_HEADER=$(cat <<EOF
// Copyright © 2016 Asteris, LLC
//
// 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.
EOF
)

HEADER_LEN=$(echo "${LICENSE_HEADER}" | wc -l)

for i in ${FILES}; do
    diff <(head -n ${HEADER_LEN} $i) <(echo "${LICENSE_HEADER}") > /dev/null
    if [[ $? -ne 0 ]]; then
        echo $i
    fi
done