#!/bin/sh
destination=
state=arg
for file in "$@"; do
    case $state in
	arg)
	    case $file in
		-d)
		    state=destination
		    ;;
		*)
		    base=`basename $file`
		    case "$destination" in
			"")
			    echo "Need -d destination option before files" 1>&2
			    exit 1
			    ;;
			*)
			    sed \
				-e 's/<[?]xml [^>]*>//' \
				-e 's/<!DOCTYPE [^>]*>//' "$file" > "$destination/$base"
			    ;;
		    esac
		    ;;
	    esac
	    ;;
	destination)
	    destination=$file
	    state=arg
	    ;;
    esac
done