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set -euo pipefail
ROOT_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")/.." && pwd)"
ARCHIVE_DIR="${ROOT_DIR}/data"
DATA_ROOT="${1:-${ROOT_DIR}/data}"
mkdir -p "${DATA_ROOT}"
declare -A selected_archives=()
declare -A selected_archive_parts=()
while IFS= read -r archive; do
filename="$(basename "${archive}")"
base="${filename}"
if [[ "${filename}" == *.tar.zst.part-* ]]; then
base="${filename%%.part-*}.tar.zst"
selected_archive_parts["${base}"]+="${archive}"$'\n'
continue
elif [[ "${filename}" == *.tar.part-* ]]; then
base="${filename%%.part-*}.tar"
selected_archive_parts["${base}"]+="${archive}"$'\n'
continue
elif [[ "${filename}" == *.tar.zst ]]; then
base="${filename%.tar.zst}"
elif [[ "${filename}" == *.tar ]]; then
base="${filename%.tar}"
else
continue
fi
if [[ -n "${selected_archives[${base}]:-}" ]]; then
echo "found multiple archive variants for ${base} under ${ARCHIVE_DIR}; keep only one of .tar or .tar.zst" >&2
exit 1
fi
selected_archives["${base}"]="${archive}"
done < <(find "${ARCHIVE_DIR}" -maxdepth 1 \( -type f -o -type l \) \( -name '*.tar' -o -name '*.tar.zst' \) | sort)
while IFS= read -r archive; do
filename="$(basename "${archive}")"
if [[ "${filename}" == *.tar.zst.part-* ]]; then
base="${filename%%.part-*}.tar.zst"
selected_archive_parts["${base}"]+="${archive}"$'\n'
elif [[ "${filename}" == *.tar.part-* ]]; then
base="${filename%%.part-*}.tar"
selected_archive_parts["${base}"]+="${archive}"$'\n'
fi
done < <(find "${ARCHIVE_DIR}" -maxdepth 1 \( -type f -o -type l \) \( -name '*.tar.zst.part-*' -o -name '*.tar.part-*' \) | sort)
if [[ "${#selected_archives[@]}" -eq 0 && "${#selected_archive_parts[@]}" -eq 0 ]]; then
echo "no archives found under ${ARCHIVE_DIR}" >&2
exit 1
fi
mapfile -t archive_bases < <(
{
printf '%s\n' "${!selected_archives[@]}"
printf '%s\n' "${!selected_archive_parts[@]}"
} | awk 'NF' | sort -u
)
for base in "${archive_bases[@]}"; do
archive="${selected_archives[${base}]:-}"
parts_blob="${selected_archive_parts[${base}]:-}"
if [[ -n "${archive}" && -n "${parts_blob}" ]]; then
echo "found both full archive and split parts for ${base} under ${ARCHIVE_DIR}; keep only one form" >&2
exit 1
fi
if [[ -n "${archive}" ]]; then
echo "extracting ${archive}"
case "${archive}" in
*.tar.zst)
tar --zstd -xf "${archive}" -C "${DATA_ROOT}"
;;
*.tar)
tar -xf "${archive}" -C "${DATA_ROOT}"
;;
*)
echo "unsupported archive format: ${archive}" >&2
exit 1
;;
esac
continue
fi
if [[ -z "${parts_blob}" ]]; then
echo "missing archive content for ${base}" >&2
exit 1
fi
mapfile -t parts < <(printf '%s' "${parts_blob}" | awk 'NF' | sort)
echo "extracting ${base} from ${#parts[@]} parts"
case "${base}" in
*.tar.zst)
cat "${parts[@]}" | tar --zstd -xf - -C "${DATA_ROOT}"
;;
*.tar)
cat "${parts[@]}" | tar -xf - -C "${DATA_ROOT}"
;;
*)
echo "unsupported split archive format: ${base}" >&2
exit 1
;;
esac
done
echo "raw data extracted into ${DATA_ROOT}"
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