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@@ -1,16 +1,15 @@
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-#!/bin/zsh
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+#!/bin/bash
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# Kubernetes prompt helper for bash/zsh
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-# ported to oh-my-zsh
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# Displays current context and namespace
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-# Copyright 2018 Jon Mosco
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+# Copyright 2019 Jon Mosco
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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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-# https://www.apache.org/licenses/LICENSE-2.0
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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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@@ -21,39 +20,150 @@
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# Debug
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[[ -n $DEBUG ]] && set -x
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-setopt PROMPT_SUBST
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-autoload -U add-zsh-hook
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-add-zsh-hook precmd _kube_ps1_update_cache
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-zmodload zsh/stat
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-zmodload zsh/datetime
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-
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# Default values for the prompt
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-# Override these values in ~/.zshrc
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+# Override these values in ~/.zshrc or ~/.bashrc
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KUBE_PS1_BINARY="${KUBE_PS1_BINARY:-kubectl}"
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KUBE_PS1_SYMBOL_ENABLE="${KUBE_PS1_SYMBOL_ENABLE:-true}"
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-KUBE_PS1_SYMBOL_DEFAULT="${KUBE_PS1_SYMBOL_DEFAULT:-\u2388 }"
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+KUBE_PS1_SYMBOL_DEFAULT=${KUBE_PS1_SYMBOL_DEFAULT:-$'\u2388 '}
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KUBE_PS1_SYMBOL_USE_IMG="${KUBE_PS1_SYMBOL_USE_IMG:-false}"
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KUBE_PS1_NS_ENABLE="${KUBE_PS1_NS_ENABLE:-true}"
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+KUBE_PS1_CONTEXT_ENABLE="${KUBE_PS1_CONTEXT_ENABLE:-true}"
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+KUBE_PS1_PREFIX="${KUBE_PS1_PREFIX-(}"
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KUBE_PS1_SEPARATOR="${KUBE_PS1_SEPARATOR-|}"
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KUBE_PS1_DIVIDER="${KUBE_PS1_DIVIDER-:}"
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-KUBE_PS1_PREFIX="${KUBE_PS1_PREFIX-(}"
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KUBE_PS1_SUFFIX="${KUBE_PS1_SUFFIX-)}"
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+KUBE_PS1_SYMBOL_COLOR="${KUBE_PS1_SYMBOL_COLOR-blue}"
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+KUBE_PS1_CTX_COLOR="${KUBE_PS1_CTX_COLOR-red}"
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+KUBE_PS1_NS_COLOR="${KUBE_PS1_NS_COLOR-cyan}"
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+KUBE_PS1_BG_COLOR="${KUBE_PS1_BG_COLOR}"
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+KUBE_PS1_KUBECONFIG_CACHE="${KUBECONFIG}"
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+KUBE_PS1_DISABLE_PATH="${HOME}/.kube/kube-ps1/disabled"
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KUBE_PS1_LAST_TIME=0
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-KUBE_PS1_ENABLED=true
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+KUBE_PS1_CLUSTER_FUNCTION="${KUBE_PS1_CLUSTER_FUNCTION}"
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+KUBE_PS1_NAMESPACE_FUNCTION="${KUBE_PS1_NAMESPACE_FUNCTION}"
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+
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+# Determine our shell
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+if [ "${ZSH_VERSION-}" ]; then
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+ KUBE_PS1_SHELL="zsh"
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+elif [ "${BASH_VERSION-}" ]; then
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+ KUBE_PS1_SHELL="bash"
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+fi
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+
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+_kube_ps1_init() {
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+ [[ -f "${KUBE_PS1_DISABLE_PATH}" ]] && KUBE_PS1_ENABLED=off
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-KUBE_PS1_COLOR_SYMBOL="%{$fg[blue]%}"
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-KUBE_PS1_COLOR_CONTEXT="%{$fg[red]%}"
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-KUBE_PS1_COLOR_NS="%{$fg[cyan]%}"
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+ case "${KUBE_PS1_SHELL}" in
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+ "zsh")
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+ _KUBE_PS1_OPEN_ESC="%{"
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+ _KUBE_PS1_CLOSE_ESC="%}"
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+ _KUBE_PS1_DEFAULT_BG="%k"
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+ _KUBE_PS1_DEFAULT_FG="%f"
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+ setopt PROMPT_SUBST
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+ autoload -U add-zsh-hook
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+ add-zsh-hook precmd _kube_ps1_update_cache
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+ zmodload -F zsh/stat b:zstat
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+ zmodload zsh/datetime
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+ ;;
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+ "bash")
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+ _KUBE_PS1_OPEN_ESC=$'\001'
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+ _KUBE_PS1_CLOSE_ESC=$'\002'
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+ _KUBE_PS1_DEFAULT_BG=$'\033[49m'
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+ _KUBE_PS1_DEFAULT_FG=$'\033[39m'
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+ [[ $PROMPT_COMMAND =~ _kube_ps1_update_cache ]] || PROMPT_COMMAND="_kube_ps1_update_cache;${PROMPT_COMMAND:-:}"
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+ ;;
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+ esac
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+}
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+
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+_kube_ps1_color_fg() {
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+ local KUBE_PS1_FG_CODE
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+ case "${1}" in
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+ black) KUBE_PS1_FG_CODE=0;;
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+ red) KUBE_PS1_FG_CODE=1;;
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+ green) KUBE_PS1_FG_CODE=2;;
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+ yellow) KUBE_PS1_FG_CODE=3;;
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+ blue) KUBE_PS1_FG_CODE=4;;
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+ magenta) KUBE_PS1_FG_CODE=5;;
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+ cyan) KUBE_PS1_FG_CODE=6;;
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+ white) KUBE_PS1_FG_CODE=7;;
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+ # 256
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+ [0-9]|[1-9][0-9]|[1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-6]) KUBE_PS1_FG_CODE="${1}";;
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+ *) KUBE_PS1_FG_CODE=default
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+ esac
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+
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+ if [[ "${KUBE_PS1_FG_CODE}" == "default" ]]; then
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+ KUBE_PS1_FG_CODE="${_KUBE_PS1_DEFAULT_FG}"
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+ return
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+ elif [[ "${KUBE_PS1_SHELL}" == "zsh" ]]; then
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+ KUBE_PS1_FG_CODE="%F{$KUBE_PS1_FG_CODE}"
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+ elif [[ "${KUBE_PS1_SHELL}" == "bash" ]]; then
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+ if tput setaf 1 &> /dev/null; then
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+ KUBE_PS1_FG_CODE="$(tput setaf ${KUBE_PS1_FG_CODE})"
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+ elif [[ $KUBE_PS1_FG_CODE -ge 0 ]] && [[ $KUBE_PS1_FG_CODE -le 256 ]]; then
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+ KUBE_PS1_FG_CODE="\033[38;5;${KUBE_PS1_FG_CODE}m"
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+ else
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+ KUBE_PS1_FG_CODE="${_KUBE_PS1_DEFAULT_FG}"
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+ fi
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+ fi
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+ echo ${_KUBE_PS1_OPEN_ESC}${KUBE_PS1_FG_CODE}${_KUBE_PS1_CLOSE_ESC}
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+}
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+
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+_kube_ps1_color_bg() {
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+ local KUBE_PS1_BG_CODE
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+ case "${1}" in
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+ black) KUBE_PS1_BG_CODE=0;;
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+ red) KUBE_PS1_BG_CODE=1;;
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+ green) KUBE_PS1_BG_CODE=2;;
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+ yellow) KUBE_PS1_BG_CODE=3;;
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+ blue) KUBE_PS1_BG_CODE=4;;
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+ magenta) KUBE_PS1_BG_CODE=5;;
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+ cyan) KUBE_PS1_BG_CODE=6;;
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+ white) KUBE_PS1_BG_CODE=7;;
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+ # 256
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+ [0-9]|[1-9][0-9]|[1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-6]) KUBE_PS1_BG_CODE="${1}";;
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+ *) KUBE_PS1_BG_CODE=$'\033[0m';;
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+ esac
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+
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+ if [[ "${KUBE_PS1_BG_CODE}" == "default" ]]; then
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+ KUBE_PS1_FG_CODE="${_KUBE_PS1_DEFAULT_BG}"
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+ return
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+ elif [[ "${KUBE_PS1_SHELL}" == "zsh" ]]; then
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+ KUBE_PS1_BG_CODE="%K{$KUBE_PS1_BG_CODE}"
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+ elif [[ "${KUBE_PS1_SHELL}" == "bash" ]]; then
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+ if tput setaf 1 &> /dev/null; then
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+ KUBE_PS1_BG_CODE="$(tput setab ${KUBE_PS1_BG_CODE})"
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+ elif [[ $KUBE_PS1_BG_CODE -ge 0 ]] && [[ $KUBE_PS1_BG_CODE -le 256 ]]; then
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+ KUBE_PS1_BG_CODE="\033[48;5;${KUBE_PS1_BG_CODE}m"
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+ else
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+ KUBE_PS1_BG_CODE="${DEFAULT_BG}"
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+ fi
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+ fi
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+ echo ${OPEN_ESC}${KUBE_PS1_BG_CODE}${CLOSE_ESC}
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+}
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_kube_ps1_binary_check() {
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- command -v "$1" >/dev/null
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+ command -v $1 >/dev/null
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}
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_kube_ps1_symbol() {
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[[ "${KUBE_PS1_SYMBOL_ENABLE}" == false ]] && return
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- KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_DEFAULT}"
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- KUBE_PS1_SYMBOL_IMG="\u2638 "
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+ case "${KUBE_PS1_SHELL}" in
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+ bash)
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+ if ((BASH_VERSINFO[0] >= 4)) && [[ $'\u2388 ' != "\\u2388 " ]]; then
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+ KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_DEFAULT}"
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+ # KUBE_PS1_SYMBOL=$'\u2388 '
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+ KUBE_PS1_SYMBOL_IMG=$'\u2638 '
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+ else
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+ KUBE_PS1_SYMBOL=$'\xE2\x8E\x88 '
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+ KUBE_PS1_SYMBOL_IMG=$'\xE2\x98\xB8 '
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+ fi
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+ ;;
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+ zsh)
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+ KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_DEFAULT}"
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+ KUBE_PS1_SYMBOL_IMG="\u2638 ";;
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+ *)
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+ KUBE_PS1_SYMBOL="k8s"
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+ esac
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if [[ "${KUBE_PS1_SYMBOL_USE_IMG}" == true ]]; then
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KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_IMG}"
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@@ -73,22 +183,24 @@ _kube_ps1_file_newer_than() {
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local file=$1
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local check_time=$2
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- zmodload -e "zsh/stat"
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- if [[ "$?" -eq 0 ]]; then
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- mtime=$(stat +mtime "${file}")
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+ if [[ "${KUBE_PS1_SHELL}" == "zsh" ]]; then
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+ mtime=$(zstat -L +mtime "${file}")
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elif stat -c "%s" /dev/null &> /dev/null; then
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# GNU stat
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- mtime=$(stat -c %Y "${file}")
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+ mtime=$(stat -L -c %Y "${file}")
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else
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# BSD stat
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- mtime=$(stat -f %m "$file")
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+ mtime=$(stat -L -f %m "$file")
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fi
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[[ "${mtime}" -gt "${check_time}" ]]
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}
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_kube_ps1_update_cache() {
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- KUBECONFIG="${KUBECONFIG:=$HOME/.kube/config}"
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+ local return_code=$?
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+
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+ [[ "${KUBE_PS1_ENABLED}" == "off" ]] && return $return_code
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+
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if ! _kube_ps1_binary_check "${KUBE_PS1_BINARY}"; then
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# No ability to fetch context/namespace; display N/A.
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KUBE_PS1_CONTEXT="BINARY-N/A"
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@@ -113,47 +225,147 @@ _kube_ps1_update_cache() {
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return
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fi
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done
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+
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+ return $return_code
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}
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-_kube_ps1_get_context_ns() {
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+_kube_ps1_get_context() {
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+ if [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]]; then
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+ KUBE_PS1_CONTEXT="$(${KUBE_PS1_BINARY} config current-context 2>/dev/null)"
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+ # Set namespace to 'N/A' if it is not defined
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+ KUBE_PS1_CONTEXT="${KUBE_PS1_CONTEXT:-N/A}"
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- # Set the command time
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- KUBE_PS1_LAST_TIME=$EPOCHSECONDS
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+ if [[ ! -z "${KUBE_PS1_CLUSTER_FUNCTION}" ]]; then
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+ KUBE_PS1_CONTEXT=$($KUBE_PS1_CLUSTER_FUNCTION $KUBE_PS1_CONTEXT)
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+ fi
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+ fi
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+}
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- KUBE_PS1_CONTEXT="$(${KUBE_PS1_BINARY} config current-context 2>/dev/null)"
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- if [[ -z "${KUBE_PS1_CONTEXT}" ]]; then
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- KUBE_PS1_CONTEXT="N/A"
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- KUBE_PS1_NAMESPACE="N/A"
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- return
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- elif [[ "${KUBE_PS1_NS_ENABLE}" == true ]]; then
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+_kube_ps1_get_ns() {
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+ if [[ "${KUBE_PS1_NS_ENABLE}" == true ]]; then
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KUBE_PS1_NAMESPACE="$(${KUBE_PS1_BINARY} config view --minify --output 'jsonpath={..namespace}' 2>/dev/null)"
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# Set namespace to 'default' if it is not defined
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KUBE_PS1_NAMESPACE="${KUBE_PS1_NAMESPACE:-default}"
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+
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+ if [[ ! -z "${KUBE_PS1_NAMESPACE_FUNCTION}" ]]; then
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+ KUBE_PS1_NAMESPACE=$($KUBE_PS1_NAMESPACE_FUNCTION $KUBE_PS1_NAMESPACE)
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+ fi
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fi
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}
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-# function to disable the prompt on the current shell
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-kubeon(){
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- KUBE_PS1_ENABLED=true
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+_kube_ps1_get_context_ns() {
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+ # Set the command time
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+ if [[ "${KUBE_PS1_SHELL}" == "bash" ]]; then
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+ if ((BASH_VERSINFO[0] >= 4 && BASH_VERSINFO[1] >= 2)); then
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+ KUBE_PS1_LAST_TIME=$(printf '%(%s)T')
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+ else
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+ KUBE_PS1_LAST_TIME=$(date +%s)
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+ fi
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+ elif [[ "${KUBE_PS1_SHELL}" == "zsh" ]]; then
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+ KUBE_PS1_LAST_TIME=$EPOCHSECONDS
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+ fi
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+
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+ _kube_ps1_get_context
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+ _kube_ps1_get_ns
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}
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-# function to disable the prompt on the current shell
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-kubeoff(){
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- KUBE_PS1_ENABLED=false
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+# Set kube-ps1 shell defaults
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+_kube_ps1_init
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+
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+_kubeon_usage() {
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+ cat <<"EOF"
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+Toggle kube-ps1 prompt on
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+
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+Usage: kubeon [-g | --global] [-h | --help]
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+
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+With no arguments, turn off kube-ps1 status for this shell instance (default).
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+
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+ -g --global turn on kube-ps1 status globally
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+ -h --help print this message
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+EOF
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+}
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+
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+_kubeoff_usage() {
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+ cat <<"EOF"
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+Toggle kube-ps1 prompt off
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+
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+Usage: kubeoff [-g | --global] [-h | --help]
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+
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+With no arguments, turn off kube-ps1 status for this shell instance (default).
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+
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+ -g --global turn off kube-ps1 status globally
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+ -h --help print this message
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+EOF
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+}
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+
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+kubeon() {
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+ if [[ "${1}" == '-h' || "${1}" == '--help' ]]; then
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+ _kubeon_usage
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+ elif [[ "${1}" == '-g' || "${1}" == '--global' ]]; then
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+ rm -f -- "${KUBE_PS1_DISABLE_PATH}"
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+ elif [[ "$#" -ne 0 ]]; then
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+ echo -e "error: unrecognized flag ${1}\\n"
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+ _kubeon_usage
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+ return
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+ fi
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+
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+ KUBE_PS1_ENABLED=on
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+}
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+
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+kubeoff() {
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+ if [[ "${1}" == '-h' || "${1}" == '--help' ]]; then
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+ _kubeoff_usage
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+ elif [[ "${1}" == '-g' || "${1}" == '--global' ]]; then
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+ mkdir -p -- "$(dirname "${KUBE_PS1_DISABLE_PATH}")"
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+ touch -- "${KUBE_PS1_DISABLE_PATH}"
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+ elif [[ $# -ne 0 ]]; then
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+ echo "error: unrecognized flag ${1}" >&2
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+ _kubeoff_usage
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+ return
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+ fi
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+
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+ KUBE_PS1_ENABLED=off
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}
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# Build our prompt
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-kube_ps1 () {
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- local reset_color="%{$reset_color%}"
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- [[ ${KUBE_PS1_ENABLED} != 'true' ]] && return
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-
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- KUBE_PS1="${reset_color}$KUBE_PS1_PREFIX"
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- KUBE_PS1+="${KUBE_PS1_COLOR_SYMBOL}$(_kube_ps1_symbol)"
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- KUBE_PS1+="${reset_color}$KUBE_PS1_SEPERATOR"
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- KUBE_PS1+="${KUBE_PS1_COLOR_CONTEXT}$KUBE_PS1_CONTEXT${reset_color}"
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- KUBE_PS1+="$KUBE_PS1_DIVIDER"
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- KUBE_PS1+="${KUBE_PS1_COLOR_NS}$KUBE_PS1_NAMESPACE${reset_color}"
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- KUBE_PS1+="$KUBE_PS1_SUFFIX"
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+kube_ps1() {
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+ [[ "${KUBE_PS1_ENABLED}" == "off" ]] && return
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+ [[ -z "${KUBE_PS1_CONTEXT}" ]] && [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]] && return
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+
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+ local KUBE_PS1
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+ local KUBE_PS1_RESET_COLOR="${_KUBE_PS1_OPEN_ESC}${_KUBE_PS1_DEFAULT_FG}${_KUBE_PS1_CLOSE_ESC}"
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+
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+ # Background Color
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+ [[ -n "${KUBE_PS1_BG_COLOR}" ]] && KUBE_PS1+="$(_kube_ps1_color_bg ${KUBE_PS1_BG_COLOR})"
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+
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+ # Prefix
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+ [[ -n "${KUBE_PS1_PREFIX}" ]] && KUBE_PS1+="${KUBE_PS1_PREFIX}"
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+
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+ # Symbol
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+ KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_SYMBOL_COLOR)$(_kube_ps1_symbol)${KUBE_PS1_RESET_COLOR}"
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+
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+ if [[ -n "${KUBE_PS1_SEPARATOR}" ]] && [[ "${KUBE_PS1_SYMBOL_ENABLE}" == true ]]; then
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+ KUBE_PS1+="${KUBE_PS1_SEPARATOR}"
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+ fi
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+
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+ # Context
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+ if [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]]; then
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+ KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_CTX_COLOR)${KUBE_PS1_CONTEXT}${KUBE_PS1_RESET_COLOR}"
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+ fi
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+
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+ # Namespace
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+ if [[ "${KUBE_PS1_NS_ENABLE}" == true ]]; then
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+ if [[ -n "${KUBE_PS1_DIVIDER}" ]] && [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]]; then
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+ KUBE_PS1+="${KUBE_PS1_DIVIDER}"
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+ fi
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+ KUBE_PS1+="$(_kube_ps1_color_fg ${KUBE_PS1_NS_COLOR})${KUBE_PS1_NAMESPACE}${KUBE_PS1_RESET_COLOR}"
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+ fi
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+
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|
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+ # Suffix
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+ [[ -n "${KUBE_PS1_SUFFIX}" ]] && KUBE_PS1+="${KUBE_PS1_SUFFIX}"
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+
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+ # Close Background color if defined
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+ [[ -n "${KUBE_PS1_BG_COLOR}" ]] && KUBE_PS1+="${_KUBE_PS1_OPEN_ESC}${_KUBE_PS1_DEFAULT_BG}${_KUBE_PS1_CLOSE_ESC}"
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echo "${KUBE_PS1}"
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}
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