#! /bin/sh

# mvdir -- move whole directories 
# $Id$
# Carlos Duarte, 961222/980722

USAGE="\
usage: $0 [-hn] srcs... dest

  -h      this help
  -n      no op
  -u user
	  specifies user for chowing files to
  -g group
	  same as -u, but for groups
  -v      be verbose
  -0      use -0 option, for gnu tools

copies whole srcs... to dest. all args must be directories.

examples: 
  $0 /tmp_mount1/home /tmp_mount2/home /home
      will merge both homes, on a single local /home directory
  $0 /usr/src . 
      all dirs on /usr/src to current one
"

while : ; do
	case x"$1" in
	x-h)	echo "$USAGE"; exit 1 ;;
	x-n)	FAKE=yes ;;
	x-u)	shift; U=$1 ;;
	x-g)	shift; G=$1 ;;
	x-v)	VERB=v ;;
	x-0)	ZERO=0 ;; 
	x--)	shift; break ;;
	x-?)	echo "invalid option -- `echo $1|cut -c2-`"
		echo "$USAGE"; exit 1 ;;
	*)	break ;;
	esac
	shift
done

# source dest, required
if test $# -lt 2; then echo "$USAGE"; exit 1; fi

P=`pwd`
eval dest="\$$#"

case "$dest" in /*) my_dest="$dest" ;; *) my_dest="$P/$dest" ;; esac

cmd="cpio -pdma$ZERO$VERB \
`echo $U : $G | sed 's/ //g; /^:$/d; s/:$//; s/^/-R/'` $my_dest"

while test "$1" != "$dest"; do
	case "$1" in /*) src_dir="$1";; *) src_dir="$P/$1" ;; esac
	if test x$FAKE = xyes; then 
		echo "cd $src_dir && find . -print$ZERO | $cmd"
	else 
		if cd "$src_dir" 2>/dev/null 1>&2 ; then 
			find . -print$ZERO | $cmd
		else
			echo skipping $1: not a directory... 1>&2
		fi
	fi
	shift
done 

exit