#!/bin/sh
#
# Copyright (c) 2021-2022, Christer Edwards <christer.edwards@gmail.com>
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
#
# * Redistributions of source code must retain the above copyright notice, this
#   list of conditions and the following disclaimer.
#
# * Redistributions in binary form must reproduce the above copyright notice,
#   this list of conditions and the following disclaimer in the documentation
#   and/or other materials provided with the distribution.
#
# * Neither the name of the copyright holder nor the names of its
#   contributors may be used to endorse or promote products derived from
#   this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
# CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
# OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

## reset colors
COLOR_GREEN=
COLOR_RED=
COLOR_RESET=
COLOR_YELLOW=

enable_color() {
    COLOR_GREEN="\033[0;32m"
    COLOR_RED="\033[0;31m"
    COLOR_RESET="\033[0;0m"
    COLOR_YELLOW="\033[1;33m"
}

# If "NO_COLOR" environment variable is present, disable output colors.
if [ -z "${NO_COLOR}" ]; then
    enable_color
fi

# Notify message on error, but do not exit
error_notify() {
    echo -e "${COLOR_RED}$*${COLOR_RESET}" 1>&2
}

# Notify message on error and exit
error_exit() {
    error_notify $@
    exit 1
}

info() {
    echo -e "${COLOR_GREEN}$*${COLOR_RESET}"
}

warn() {
    echo -e "${COLOR_YELLOW}$*${COLOR_RESET}"
}
