opensde-nopast/lib/sde-download/cksum.sh

# --- SDE-COPYRIGHT-NOTE-BEGIN ---
# This copyright note is auto-generated by ./scripts/Create-CopyPatch.
# 
# Filename: lib/sde-download/cksum.sh
# Copyright (C) 2006 - 2007 The OpenSDE Project
# 
# More information can be found in the files COPYING and README.
# 
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; version 2 of the License. A copy of the
# GNU General Public License can be found in the file COPYING.
# --- SDE-COPYRIGHT-NOTE-END ---

BUNZIP2=bunzip2
GUNZIP=gunzip
UNCOMPRESS=uncompress
# gunzip may be an alternative for uncompress
if ! type -p $UNCOMPRESS 2>&1 > /dev/null; then
	UNCOMPRESS=gunzip
fi

get_cksum() {
	local extractor=cat
	case "${x##*.}" in
		bz2|tbz2|tbz) extractor=$BUNZIP2 ;;
		gz|tgz) extractor=$GUNZIP ;;
		Z)	extractor=$UNCOMPRESS ;;
	esac
	$extractor < "$x" | cksum | cut -f1 -d' '
}

if [ $# -eq 0 ]; then
	cat >&2 <<-EOT
	Usage: $0 <file> ...
	Returns the checksums of a given list of files
	EOT
	false
else
	for x; do
		if [ -f "$x" ]; then
			echo -n "$x: "
			get_cksum "$x"
		else
			echo "$x: No such file." >&2
		fi
	done
fi