mirror of https://github.com/kubernetes/kops.git
72 lines
2.0 KiB
Bash
Executable File
72 lines
2.0 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Copyright 2019 The Kubernetes Authors.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# common.sh has helper functions, and is sourced by the other scripts in this directory
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set -o errexit
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set -o nounset
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set -o pipefail
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KOPS_ROOT="$( cd "$( dirname "${BASH_SOURCE[0]}" )"/.. >/dev/null 2>&1 && pwd )"
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TOOLS_BIN="${KOPS_ROOT}/_output/bin"
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export KOPS_ROOT TOOLS_BIN
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kube::util::array_contains() {
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local search="$1"
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local element
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shift
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for element; do
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if [[ "${element}" == "${search}" ]]; then
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return 0
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fi
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done
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return 1
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}
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kube::util::read-array() {
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# shellcheck disable=SC2034
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local i=0
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unset -v "$1"
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while IFS= read -r "$1[i++]"; do :; done
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eval "[[ \${$1[--i]} ]]" || unset "$1[i]" # ensures last element isn't empty
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}
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kube::util::trap_add() {
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local trap_add_cmd
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trap_add_cmd=$1
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shift
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for trap_add_name in "$@"; do
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local existing_cmd
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local new_cmd
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# Grab the currently defined trap commands for this trap
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existing_cmd=$(trap -p "${trap_add_name}" | awk -F"'" '{print $2}')
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if [[ -z "${existing_cmd}" ]]; then
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new_cmd="${trap_add_cmd}"
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else
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new_cmd="${trap_add_cmd};${existing_cmd}"
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fi
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# Assign the test. Disable the shellcheck warning telling that trap
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# commands should be single quoted to avoid evaluating them at this
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# point instead evaluating them at run time. The logic of adding new
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# commands to a single trap requires them to be evaluated right away.
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# shellcheck disable=SC2064
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trap "${new_cmd}" "${trap_add_name}"
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done
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}
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