#! /bin/sh
##
#	install-sh
#
#	Copyright (C) 2000  Paul J. Lucas
#
#	This program is free software; you can redistribute it and/or modify
#	it under the terms of the GNU General Public License as published by
#	the Free Software Foundation; either version 2 of the License, or
#	(at your option) any later version.
#
#	This program is distributed in the hope that it will be useful,
#	but WITHOUT ANY WARRANTY; without even the implied warranty of
#	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#	GNU General Public License for more details.
#
#	You should have received a copy of the GNU General Public License
#	along with this program; if not, write to the Free Software
#	Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
##

CP="cp -pf"
CHOWN=chown
CHGRP=chgrp
CHMOD=chmod
MKDIR=mkdir

# uncomment the next line to test script
#ECHO=echo

########## You shouldn't have to change anything below this line. #############

ME=`basename $0`

usage() {
	echo "usage: $ME [-o owner] [-g group] [-m mode] file ... dir" >&2
	echo "       $ME [-o owner] [-g group] [-m mode] -d dir" >&2
}

###############################################################################
#
#	Process command-line options
#
#	We don't rely on getopt because it varies and/or is broken on some
#	systems.
#
###############################################################################

unset A dir src dst group mode owner

while [ -n "$1" ]
do
	if [ -z "$A" ]
	then
		case $1 in

		-d*)	if [ x"$1" = x-d ]
			then A=$1
			else dir=`expr $1 : '-d\(.*\)'`
			fi
			;;

		-g*)	if [ x"$1" = x-g ]
			then A=$1
			else group=`expr $1 : '-g\(.*\)'`
			fi
			;;

		-m*)	if [ x"$1" = x-m ]
			then A=$1
			else mode=`expr $1 : '-m\(.*\)'`
			fi
			;;

		-o*)	if [ x"$1" = x-o ]
			then A=$1
			else owner=`expr $1 : '-o\(.*\)'`
			fi
			;;

		-*)	echo "$ME: illegal option: $1" >&2
			usage; exit 1
			;;

		*)	if [ -z "$src" ]
			then src=$1
			else src="$src $dst"; dst=$1
			fi
			;;
		esac
	else
		##### options that have an argument
		case $1 in
		-*)	break ;;
		esac
		case $A in
		-d)	dir=$1 ;;
		-g)	group=$1 ;;
		-m)	mode=$1 ;;
		-o)	owner=$1 ;;
		esac
		unset A
	fi
	shift
done

[ -n "$A" ] && {
	echo "$ME: $A requires an argument" >&2
	usage; exit 2
}

###############################################################################
#
#	Go!
#
###############################################################################

change() {
	[ -n "$owner" ] && $ECHO $CHOWN $owner $* 2>/dev/null
	[ -n "$group" ] && $ECHO $CHGRP $group $* 2>/dev/null
	[ -n "$mode"  ] && $ECHO $CHMOD $mode  $* 2>/dev/null
}

if [ -n "$dir" ]
then
	# don't rely on mkdir -p being available
	echo $dir | tr '/' '\012' | while read subdir
	do
		[ -z "$subdir" ] && subdir=/
		if [ -z "$path" ]
		then path=$subdir
		elif [ "$path" = / ]
		then path="/$subdir"
		else path="$path/$subdir"
		fi
		[ -d "$path" ] || { $ECHO $MKDIR $path; change $path; }
	done
else
	[ -z "$src" ] && {
		echo "$ME: no source file(s) specified" >&2
		usage; exit 3
	}
	[ -z "$dst" ] && {
		echo "$ME: no destination directory specified" >&2
		usage; exit 4
	}
        if [ `pwd` != `cd $dst; pwd` ]
        then
            $ECHO $CP $src $dst
            $ECHO cd $dst
            change `echo $src | xargs -n1 basename`
        fi
fi