88 lines
2.4 KiB
Bash
88 lines
2.4 KiB
Bash
#!/usr/bin/env bash
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# Copyright 2020 The cert-manager 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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# shellcheck disable=SC2059
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set -o nounset
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set -o errexit
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set -o pipefail
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red=
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green=
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yel=
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cyan=
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bold=
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gray=
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end=
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warn=
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wait=
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greencheck=
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redcross=
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if ! printenv NO_COLOR >/dev/null; then
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red="\033[0;31m"
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green="\033[0;32m"
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yel="\033[0;33m"
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cyan="\033[0;36m" # C = cyan
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bold="\033[0;37m" # B = white bold
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gray="\033[0;90m"
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end="\033[0m" # E is the "end" marker.
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warn="⚠️ "
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wait="⏳️ "
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greencheck="✅ "
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redcross="❌ "
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fi
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# Color stuff. Usage:
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# echo "Test in yellow!" | color "$yel"
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# or if you just want some ANSI codes to be interpreted:
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# echo "${yel}Test in yellow!${end}" | color
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color() {
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if printenv 1 >/dev/null; then
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# Let's prevent accidental interference from programs that also print
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# colors. Caveat: does only work on lines that end with \n. Lines that
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# do not end with \n are discarded.
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cmd='sed -r "s/\x1B\[([0-9]{1,3}(;[0-9]{1,2})?)?[mGK]//g"'
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col=${1}
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else
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cmd='cat'
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col=
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fi
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$cmd | while IFS= read -r line; do
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# We should be using "%s" "$line", but that would disable the
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# interpretation of color characters in $line.
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#
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# shellcheck disable=SC2059
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printf "${col}${line}${end}\n"
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done
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}
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# Shows the command before running it. Usage:
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#
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# trace CMD ARGUMENTS...
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#
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# If you wish to trace a command that contains pipes, you can run:
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#
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# trace bash -c "command | command | command"
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trace() {
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# This mysterious awk expression makes sure to double-quote the arguments
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# that have special characters in them, such as spaces, curly braces (since
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# zsh interprets curly braces), interogation marks, simple braces, and "*".
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for arg in "$@"; do echo "$arg"; done \
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| awk '{if (NR==1) printf "'"$yel"'%s '"$bold"'",$0; else if ($0 ~ / |\}|\{|\(|\)|\\|\*|\?/) printf "\"%s\" ",$0; else printf "%s ",$0} END {printf "\n"}'
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command "$@"
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}
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