#!/bin/sh
#	cpset.sh
#  This script does the subset of the cpset(1) command that is needed
#  by the MajorCool programs.  It does require that all arguments
#  be specified and it will fail spectacularly if the file system
#  is full.
USAGE="usage: Cpset [-o] from-file to-file  mode  owner group"

#  Save to-file with OLD prefix if -o option specified
OLD=
if [ X"$1" = X"-o" ]
then
	shift
	OLD=`echo $2 | sed 's,\([^/]*\)$,OLD\1,'`
fi

if [ $# -ne 5 ]
then
	echo $USAGE 1>&2
	exit 2
fi

if [ -n "$OLD" -a -f $2 ]
then
	rm -f $OLD
	mv $2 $OLD
fi

set -e			# Fail if something goes wrong
rm -f $2
cp $1 $2		# Copy source to destination
chgrp $5 $2		# Change GROUP
chmod $3 $2		# Change Modes in case OWNER is different
chown $4 $2		# Change Owner
set +e
chmod $3 $2		# Try setting modes again (might fail)

exit 0