function ua() { local usage=\ "Archive files and directories using a given compression algorithm. Usage: $0 <format> <files> Example: $0 tbz PKGBUILD Supported archive formats are: 7z, bz2, gz, lzma, lzo, rar, tar, tbz (tar.bz2), tgz (tar.gz), tlz (tar.lzma), txz (tar.xz), tZ (tar.Z), xz, Z, zip, and zst." if [[ $# -lt 2 ]]; then print -u2 -- "$usage" return 1 fi local ext="$1" local input="${2:a}" shift if [[ ! -e "$input" ]]; then print -u2 -- "$input not found" return 1 fi # generate output file name local output if [[ $# -gt 1 ]]; then output="${input:h:t}" elif [[ -f "$input" ]]; then output="${input:r:t}" elif [[ -d "$input" ]]; then output="${input:t}" fi # if output file exists, generate a random name if [[ -f "${output}.${ext}" ]]; then output=$(mktemp "${output}_XXX") && rm "$output" || return 1 fi # add extension output="${output}.${ext}" # safety check if [[ -f "$output" ]]; then print -u2 -- "output file '$output' already exists. Aborting" return 1 fi case "$ext" in 7z) 7z u "${output}" "${@}" ;; bz2) bzip2 -vcf "${@}" > "${output}" ;; gz) gzip -vcf "${@}" > "${output}" ;; lzma) lzma -vc -T0 "${@}" > "${output}" ;; lzo) lzop -vc "${@}" > "${output}" ;; rar) rar a "${output}" "${@}" ;; tar) tar -cvf "${output}" "${@}" ;; tbz|tar.bz2) tar -cvjf "${output}" "${@}" ;; tgz|tar.gz) tar -cvzf "${output}" "${@}" ;; tlz|tar.lzma) XZ_OPT=-T0 tar --lzma -cvf "${output}" "${@}" ;; txz|tar.xz) XZ_OPT=-T0 tar -cvJf "${output}" "${@}" ;; tZ|tar.Z) tar -cvZf "${output}" "${@}" ;; xz) xz -vc -T0 "${@}" > "${output}" ;; Z) compress -vcf "${@}" > "${output}" ;; zip) zip -rull "${output}" "${@}" ;; zst) zstd -c -T0 "${@}" > "${output}" ;; *) print -u2 -- "$usage"; return 1 ;; esac }