functions.sh

#/bin/bash

#
# Copyright (c) 2021-2024 Krai Ltd.
#
# SPDX-License-Identifier: MIT.
#
# Permission is hereby granted, free of charge, to any person obtaining a copy of
# this software and associated documentation files (the "Software"), to deal in
# the Software without restriction, including without limitation the rights to
# use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
# of the Software, and to permit persons to whom the Software is furnished to do
# so, subject to the following conditions:

# The above copyright notice and this permission notice shall be included in all
# copies or substantial portions of the Software.

# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
# SOFTWARE.
#

function exit_if_error() {
  message="$1"
  if [ "${?}" != "0" ]; then
    echo ""
    echo "ERROR: ${message}"
    exit 1
  fi
}

function exit_if_empty() {
  if [ -z "$1" ]; then
    echo ""
    echo "ERROR: $2"
    exit 1
  fi
}

function print_variables() {
  a=("$@")
  echo $a
  unset a[0]
  for var in "${a[@]}"; do
    printf "Setting %s%q\n" "${var:1}=" "${!var}"
  done
}

function get_os() {
  local os=$1
  local override=$2
  if [[ "${override}" == "yes" && ! -z "${os}" ]]; then
    echo "User overriding device OS detection ..."
    _DEVICE_OS="${os}"
  else
    echo "Automatically detecting device OS ..."
    if [[ $(cat /etc/os-release) == *Ubuntu* ]]; then
      _DEVICE_OS="ubuntu"
    else
      _DEVICE_OS="centos"
    fi
  fi
  echo "Setting device OS as '${_DEVICE_OS}' ..."
}