_func

# Copyright 2020 Toolhouse, Inc.
#
# 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.

# Takes an argument at returns whether it looks "truthy"
parse_bool() {
    ARG=$(echo "$1" | tr '[:upper:]' '[:lower:]' | sed s/\\s//)
    if [ "$ARG" = "" ]; then return 1; fi
    if [ "$ARG" = "false" ]; then return 1; fi
    if [ "$ARG" = "no" ]; then return 1; fi
    if [ "$ARG" = "off" ]; then return 1; fi
    if [ "$ARG" -eq 0 ] 2> /dev/null; then return 1; fi
}

# Checks if an environment variable is set
# (wether or not it is an empty string)
is_set() {
    if [ -n "$1" ]; then return 0; else return 1; fi
}