118 lines
3.5 KiB
Bash
118 lines
3.5 KiB
Bash
#!/usr/bin/env bash
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# tar.sh - backup files via tar.
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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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handler::tar() {
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# Backup local files with tar(1). Handle 'file' URI scheme.
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#
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# Usage: handler::tar URI
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log "Run handler handler::tar() ..."
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local uri
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local src_path
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local dst_path
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local opts
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local archive
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local compr
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local exclude
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local file_ext
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uri="$1"
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dst_path="$__main_target_path"
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parse_uri "$uri"
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if [ -f "$path" ] || [ -d "$path" ]; then
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src_path="$path"
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else
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echo "Error: Path '$path' from URI '$uri' does not exists" >&2
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exit 1
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fi
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if [[ "$src_path" == "$dst_path" ]]; then
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echo "Error: Source and destination paths is the same: $src_path; $dst_path" >&2
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exit 1
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fi
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# Exit if tar is not installed
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is_installed tar
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# Overwrire __tar_options
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if [ -n "$tar_options" ]; then
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opts="$tar_options"
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else
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opts="$__tar_options"
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fi
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# Overwrite __tar_exclude
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if [ "$tar_exclude" ]; then
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for item in "${tar_exclude[@]}"; do
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exclude+=" --exclude $item"
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done
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else
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exclude=
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fi
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# Overwrite __compression
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if [ "$compression" ]; then
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compr="$compression"
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else
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compr="$__compression"
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fi
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# Select filename extension by compression type.
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# Make sure for the `--auto-compress` is enabled in __tar_options
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# Refference: https://www.gnu.org/software/tar/manual/html_node/gzip.html
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case "$compr" in
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gzip|gz) file_ext='.tar.gz';; # gzip
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tgz) file_ext='.tgz';; # gzip
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taz) file_ext='.taz';; # gzip
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compress|Z) file_ext='.tar.Z';; # compress
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taZ) file_ext='.taZ';; # compress
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bzip2|bz2) file_ext='.tar.bz2';; # bzip2
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tz2) file_ext='.tz2';; # bzip2
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tbz2) file_ext='.tbz2';; # bzip2
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tbz) file_ext='.tbz';; # bzip2
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lzip|lz) file_ext='.tar.lz';; # lzip
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lzma) file_ext='.tar.lzma';; # lzma
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tlz) file_ext='.tlz';; # lzma
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lzop|lzo) file_ext='.tar.lzo';; # lzop
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xz) file_ext='.tar.xz';; # xz
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zstd|zst) file_ext='.tar.zst';; # zstd
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tzst) file_ext='.tzst';; # zstd
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*) file_ext='.tar.gz';; # Force gzip
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esac
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archive="${dst_path}/$(gen_backup_name "$file_ext")"
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[ "$__verbose" ] && {
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echo "Source path: $src_path"
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echo "Destination path: $dst_path"
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echo "Command: tar $exclude $opts $archive $src_path"
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}
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log "Archiving $src_path to $archive ..."
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log "Command: tar $exclude $opts $archive $src_path"
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# Run tar
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try tar "$exclude" "$opts" "$archive" "$src_path"
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# Append path to 'backups' array
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backups+=("$archive")
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}
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