feat: Add common.sh
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src/lib/common.sh
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50
src/lib/common.sh
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#! /usr/bin/env bash
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# common.sh - common functions.
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# Copyright (c) 2022 ge <https://nixhacks.net/>
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <https://www.gnu.org/licenses/>.
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log() {
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# Logger. Write message to __log_file.
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#
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# Usage: log [-p] MESSAGE
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#
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# Can read from STDIN. Removes ANSI escape codes from log message.
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# Echo message to STDOUT with '-p' option.
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local message
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local print
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local log_file
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log_file="$__log_file"
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# If no arguments passed OR '0' descriptor is open, then read from descriptor.
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# If no arguments AND '0' descriptor is closed, then 'message' will not be set.
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[[ "$#" == 0 || -t 0 ]] || message="$(cat <&0)"
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while (( "$#" )); do
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case "$1" in
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-p|--print) print=1; shift;;
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-) message="$(cat <&0)"; shift "$#";;
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*) message="$@"; shift "$#";;
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esac
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done
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[[ "$print" == 1 ]] && echo "$message"
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while read line; do
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printf '[%s] [%s] %s\n' "$(date +'%d %b %Y %H:%M:%S %z')" "$0" "$line" >> "$log_file"
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done <<< "$(sed -r 's/\x1B\[(([0-9]+)(;[0-9]+)*)?[m,K,H,f,J]//g' <<< "$message")"
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}
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