feat: Add common.sh

This commit is contained in:
ge 2022-05-14 20:08:16 +03:00
parent 1e69c9b497
commit 6bd28cd6ae

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