#!/usr/bin/env bash

# Copyright 2014 The Kubernetes Authors.
#
# 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.

# arguments: target, item1, item2, item3, ...
# returns 0 if target is in the given items, 1 otherwise.
kube::util::array_contains() {
  local search="$1"
  local element
  shift
  for element; do
    if [[ "${element}" == "${search}" ]]; then
      return 0
     fi
  done
  return 1
}

# kube::util::check-file-in-alphabetical-order <file>
# Check that the file is in alphabetical order
#
function kube::util::check-file-in-alphabetical-order {
  local failure_file="$1"
  if ! diff -u "${failure_file}" <(LC_ALL=C sort "${failure_file}"); then
    {
      echo
      echo "${failure_file} is not in alphabetical order. Please sort it:"
      echo
      echo "  LC_ALL=C sort -o ${failure_file} ${failure_file}"
      echo
    } >&2
    false
  fi
}