For convenient creation of zstd archives

zstdcompress

#!/bin/bash

source="$1"

keep_dir=${keep_dir:-false}
tar_wrap=${tar_wrap:-true} # for wrapping a single file

if [[ "$source" == "" ]]; then
  echo "Error: No source provided!"
  exit 1
fi

if ! [[ -e "$source" ]]; then
  echo "Error: ${source} doesn't exist!"
  exit 2
fi

if [[ "$2" == "" ]]; then
   target=$(basename "$source")
else
   target="$2"
fi

if [[ -d "$source" ]] && $keep_dir || ! [[ -d "$source" ]] && $tar_wrap; then
  # keep outer directory in the archive or wrap a single file in tar
  tar --create --verbose --use-compress-program "zstd --threads=$(nproc) -19 --verbose" --file "${target}.tar.zst" "${source}"
elif [[ -d "$source" ]]; then
  # archive inside the directory without keeping it wrapping the files
  tar --create --verbose --use-compress-program="zstd --threads=$(nproc) -19 --verbose" --file "${target}.tar.zst" --directory "${source}" .
else
  zstd --threads=$(nproc) -19 "$source" -o "${target}.zst"
fi