#!/bin/ksh
# arc2tarz: convert arced file to tarred, compressed form.
# @(#) arc2tarz.ksh 1.0 92/02/16
# 91/03/28 john h. dubois iii (john@armory.com)
# 92/02/16 added -h option for help

unset ENV

if [ $# = 0 -o "$1" = -h ]; then
	echo \
"Usage: $0 arcfile [ tarzfile ]
arcfile is the name of an arc file to convert to tarred, compressed form. 
The file must have a .arc extension, but only the base name needs to be
given.  If no output file name is given, it will be created in the current
directory with the name being the arcfile basename followed by .tar.Z
If the basename is too long the extension may be truncated.  All upper
case letters in the names of files in the archive are moved to lower case."
	exit
fi

[ -z "$TMP" ] && tmpdir=/tmp/arc2tarz.$$ || tmpdir=$TMP/arc2tarz.$$

[[ $1 != *.arc ]] && arcfile=$1.arc || arcfile=$1
if [ ! -f $arcfile -o ! -r $arcfile ]; then
	echo "Could not open arc file \"$arcfile\"."
	exit 1
fi
[[ $arcfile != /* ]] && arcfile=$PWD/$arcfile

basename=${arcfile%.arc}
basename=${basename##*/}
[ $# -lt 2 ] && tarzname=$PWD/$basename.tar.Z || tarzname=$2

mkdir $tmpdir
cd $tmpdir
echo "unarcing files..."
arc -ie $arcfile
lcase
echo "tarring/compressing files..."
tar cf - * | compress > $tarzname
cd -
rm -r $tmpdir