#!/usr/bin/env bash # bafscript -- backup automation micro-framework. # Copyright (c) 2022 ge # # 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 . __version='0.0.0' __config= __log_file='./log.txt' __tar_options='-czf' __name_date_fmt='_%Y%m%d-%H%M' if [ -n "$BAFLIB" ]; then __library="$BAFLIB" else __library='./lib' fi # Source library for file in "$__library"/*; do . "$file" done print_help() { cat <<- EOF Backup files and databases. Usage: $0 [-cvlhV] ARGUMENTS.. Options: -c, --config config file. -v, --verbose verbose output. -l, --log-file log file. -h, --help print this help messagea and exit. -V, --version print version and exit. Environment: BAFLIB path to baf library [current: $__library] EOF } # ---------------------------------------------------------- # # * CLI Arguments Parser # # ---------------------------------------------------------- # optval() { # GNU-style CLI options parser. # # Parse --opt VAL and --opt=VAL options. # Requires 2 arguments: $1, $2. # Return variables: # opt option name. # val option value. # sft value for shift. if [[ "$1" =~ .+=.+ ]]; then opt="${1%%=*}"; val="${1#*=}"; sft=1 elif [[ ! "$1" =~ .+=$ ]] && [ "$2" ] && [ "${2:0:1}" != "-" ]; then opt="$1"; val="$2"; sft=2 else opt="$1" if [[ "$1" =~ .+=$ ]]; then opt="${1:0: -1}"; fi echo "Error: Missing argument for $opt" >&2; exit 1 fi } # Print help if no arguments passed [[ "$#" == 0 ]] && { print_help; exit 1; } # Split combined short options, e.g. '-abc' to '-a' '-b' '-c' for args in "$@"; do shift case "$args" in --*) set -- "$@" "$args";; # save long options -*) args="$(echo "${args:1}" | grep -o . | xargs -I {} echo -n '-{} ')" set -- "$@" $args;; *) set -- "$@" "$args";; # save positional arguments esac done # Final arguments parser while (( "$#" )); do case "$1" in -c|--config|--config=*) optval "$1" "$2"; __config="$val"; shift "$sft";; -v|--verbose) __verbose=1; shift;; -l|--log-file|--log-file=*) optval "$1" "$2"; __log_file="$val"; shift "$sft";; -h|--help) print_help; exit 1;; -V|--version) echo "$__version"; exit 0;; -*) echo "Error: Unknown option: $1" >&2; exit 1;; *) __args+=("$1"); shift;; # Save positional args esac done # ---------------------------------------------------------- # # * Do backups # # ---------------------------------------------------------- # for script in "${__args[@]}"; do source_script "$script" # Initialise variables __user_script="$script" backups=() # Array of created backups, contains full pathes # Run prepare() before all if set if is_function_set prepare; then prepare fi # Run user defined backup() if set or builtin_backup() if is_function_set backup; then backup else builtin_backup fi # Run post backup function if set if is_function_set finalise; then finalise fi done