Daniel@0: #!/bin/sh
Daniel@0: if [ $# -lt 3 ]; then
Daniel@0: 	echo 'bufs <n:int> <command> <arg1> <arg2> ...'
Daniel@0: 	echo
Daniel@0: 	echo 'Apply command to arguments but buffering the nth argument'
Daniel@0: 	echo 'of command (ie (n+1)th argument of strm) into a temporary file.'
Daniel@0: 	echo 'This means that the nth argument can safely be replaced with'
Daniel@0: 	echo 'a bash process redirection.'
Daniel@0: 	exit 1
Daniel@0: fi
Daniel@0: set -o nounset
Daniel@0: set -e
Daniel@0: 
Daniel@0: function str1 {
Daniel@0: 	cmd="$1"
Daniel@0: 	arg1="$2"
Daniel@0: 	tmp=`mktemp -t strXXX`
Daniel@0: 	# echo created $tmp 1>&2
Daniel@0: 	trap "rm -f $tmp; exit" INT KILL EXIT
Daniel@0: 	shift 2
Daniel@0: 	(cat "$arg1" > $tmp) && $cmd $tmp "$@"
Daniel@0: }
Daniel@0: 
Daniel@0: function str {
Daniel@0: 	pos=$1
Daniel@0: 	shift 1
Daniel@0: 	if [ $pos -eq 1 ]; then
Daniel@0: 		str1 "$@"
Daniel@0: 	else
Daniel@0: 		cmd="$1 $2"
Daniel@0: 		shift 2
Daniel@0: 		str $(($pos-1)) "$cmd" "$@"
Daniel@0: 	fi
Daniel@0: }
Daniel@0: str "$@"