chksum

#!/usr/bin/env bash

show_help() {
	cat <<EOF

$EXEC_NAME version $VERSION

Usage:
 $EXEC_NAME
 $EXEC_NAME (-h|--help)
 $EXEC_NAME (-v|--version)

Updates the checksums stored in the iRODS catalog.

This script updates the checksum values stored in the iRODS catalog for a set of
data objects. Each replica of each data object is updated. It reads the list of
data objects from stdin with each data object being on its own line.

Options:
 -h, --help     show help and exit
 -v, --version  show version and exit

Prerequisites:
 1) iRODS iCommands version 4.2.8+ must be installed.
 2) The user must be initialized with iRODS as an admin user.

© 2024, The Arizona Board of Regents on behalf of The University of Arizona. For
license information, see https://cyverse.org/license.
EOF
}

set -o errexit -o nounset -o pipefail

readonly VERSION=1

EXEC_NAME="$(basename "$(realpath --canonicalize-missing "$0")")"
readonly EXEC_NAME

main() {
	local opts
	if ! opts="$(getopt --name="$EXEC_NAME" --options=hv --longoptions=help,version -- "$@")"; then
		printf '\n' >&2
		show_help >&2
		return 1
	fi

	eval set -- "$opts"

	while true; do
		case "$1" in
			-h|--help)
				show_help
				return 0
				;;
			-v|--version)
				printf '%s\n' "$VERSION"
				return 0
				;;
			--)
				shift
				break
				;;
			*)
				show_help >&2
				return 1
				;;
		esac
	done

	xargs --delimiter='\n' ichksum -a -f -M -v
}

main "$@"