feat: Rename Baf to boring-backup
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174
src/boring-backup
Executable file
174
src/boring-backup
Executable file
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#!/usr/bin/env bash
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# boring-backup -- backup automation micro-framework and library.
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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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__version='0.0.0'
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__config=
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__verbose=
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__log_file='./log.txt'
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__log_date_fmt='%d/%b/%Y:%H:%M:%S %z'
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__tar_options='-acf'
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__tar_compression='gzip'
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__name_date_fmt='_%Y%m%d-%H%M'
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if [ -n "$BBLIB" ]; then
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__library="$BBLIB"
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else
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__library='./lib'
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fi
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# Source library
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for file in "$__library"/*; do
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. "$file"
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done
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print_help() {
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cat <<- EOF
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Backup files and databases.
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Usage: $0 [-cvlhV] FILES..
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Options:
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-c, --config config file.
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-v, --verbose verbose output.
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-l, --log-file log file.
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-h, --help print this help messagea and exit.
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-V, --version print version and exit.
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Environment:
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BBLIB path to bb library [current: $__library]
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EOF
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}
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# ---------------------------------------------------------- #
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# * CLI Arguments Parser #
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# ---------------------------------------------------------- #
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optval() {
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# GNU-style CLI options parser.
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#
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# Parse --opt VAL and --opt=VAL options.
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# Requires 2 arguments: $1, $2.
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# Return variables:
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# opt option name.
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# val option value.
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# sft value for shift.
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if [[ "$1" =~ .+=.+ ]]; then
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opt="${1%%=*}"; val="${1#*=}"; sft=1
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elif [[ ! "$1" =~ .+=$ ]] && [ "$2" ] && [ "${2:0:1}" != "-" ]; then
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opt="$1"; val="$2"; sft=2
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else
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opt="$1"
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if [[ "$1" =~ .+=$ ]]; then opt="${1:0: -1}"; fi
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echo "Error: Missing argument for $opt" >&2; exit 1
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fi
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}
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# Print help if no arguments passed
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[[ "$#" == 0 ]] && { print_help; exit 1; }
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# Split combined short options, e.g. '-abc' to '-a' '-b' '-c'
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for args in "$@"; do
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shift
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case "$args" in
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--*)
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set -- "$@" "$args";; # save long options
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-*)
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args="$(echo "${args:1}" | grep -o . | xargs -I {} echo -n '-{} ')"
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set -- "$@" $args;;
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*)
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set -- "$@" "$args";; # save positional arguments
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esac
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done
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# Final arguments parser
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while (( "$#" )); do
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case "$1" in
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-c|--config|--config=*) optval "$1" "$2"; __config="$val"; shift "$sft";;
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-v|--verbose) __verbose=1; shift;;
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-l|--log-file|--log-file=*) optval "$1" "$2"; __log_file="$val"; shift "$sft";;
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-h|--help) print_help; exit 1;;
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-V|--version) echo "$__version"; exit 0;;
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-*) echo "Error: Unknown option: $1" >&2; exit 1;;
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*) __args+=("$1"); shift;; # Save positional args
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esac
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done
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# ---------------------------------------------------------- #
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# * Do backups #
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# ---------------------------------------------------------- #
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# Scripts counter.
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__count=${#__args[@]} # count
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__iter=1 # iterator
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# Startup log.
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date +'Start: %d %b %Y %T %z'
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log "Backup STARTED"
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log -p "Configuration file: $([ "$__config" ] || echo not specified && echo "$__config")"
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log "Scripts to process (${__count}): ${__args[@]}"
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for script in "${__args[@]}"; do
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# Source scripts
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source_script "$script"
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# Config can ovewrite script functions and variables
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[ -n "$__config" ] && . "$__config"
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echo
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echo -e "\e[1m==> Script: ${__args[__iter-1]##*/} [$__iter/$__count]\e[0m" | log -p
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# Initialise variables
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__user_script="$script"
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backups=() # Array of created backups, contains full pathes
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# Run prepare() before all if set
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if is_function_set prepare; then
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log -p "Execute prepare() ..."
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prepare
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unset prepare
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fi
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# Run user defined backup() if set or builtin_backup()
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if is_function_set backup; then
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echo -e "Execute \e[1mbackup()\e[0m ..." | log -p
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backup
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unset backup
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else
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echo -e "Execute \e[1mbuiltin_backup()\e[0m ..." | log -p
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builtin_backup
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fi
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# Run post backup function if set
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if is_function_set finalise; then
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echo -e "Execute \e[1mfinalise()\e[0m ..." | log -p
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finalise
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unset finalise
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fi
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# Increase counter
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((__iter++)) || true
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# Unset user defined variables
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unset tar_options
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unset tar_compression
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unset name_date_fmt
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done
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log "Backup FINISHED"
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echo -e "\nBackup [Done]"
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