#!/bin/sh

# InstallEpics
#
#     InstallEpics is used within makefiles to copy new versions of
#     files into a destination directory.
#
##########################################################
TOOL=`basename $0`
MODE=755
CREATE_DIR=0
USAGE="Usage:
	$TOOL [ -m mode ] file ... directory

     -m mode        Set the mode for the installed file (0755 by default)
     file           Name of file
     directory      Destination directory
"
# get command line options
set -- `getopt m:g:o:csd $*`
for i 
do
	case $i in
	-m)             MODE=$2; shift 2;;
	-g | -o)        echo "$USAGE"; echo "$i not implemented"; shift 2;;
	-c | -s)        echo "$USAGE"; echo "$i not implemented"; shift;;
	-d)             CREATE_DIR=1;shift;;
	--)             shift; break;;
	esac
done

# at least two args required
if [ $# -lt 2 ]
then
	echo "$USAGE"
	exit 1
fi

INSTALL_DIR=
FILELIST=
for i 
do
	FILELIST="${FILELIST} ${INSTALL_DIR}"; INSTALL_DIR=$i; shift;
done

if [ ! -d "${INSTALL_DIR}" ] ;then
    if [ "${CREATE_DIR}" ] ;then
        OLDIFS=${IFS}
        IFS=/
        DIRNAME=
        for DIR in ${INSTALL_DIR}
        do
		    DIRNAME=${DIRNAME}/${DIR}
            if [ ! -d "${DIRNAME}" ] ;then
                mkdir "${DIRNAME}"
            fi
        done
        IFS=${OLDIFS}
    else
        echo "$USAGE\n Can't find directory '${INSTALL_DIR}'"
        exit 1
    fi
fi

for FILE in ${FILELIST} 
do
	if [ ! -f ${FILE} ] ;then
    	echo "$USAGE\n Can't find file '${FILE}'"
    	exit 1
	fi

	TEST=
	FILEBASENAME=`basename ${FILE}`
	if [ -f ${INSTALL_DIR}/${FILEBASENAME} ] ;  then 
		#Is ${INSTALL_DIR}/${FILEBASENAME} link timestamp  newer than ${FILE}
		TEST=`find ${INSTALL_DIR} -name "${FILEBASENAME}" -newer ${FILE} -print`
	fi
	if [ "${TEST}x" = "x" ] ; then 
		#echo "Installing ${FILEBASENAME}"
		/bin/rm -f ${INSTALL_DIR}/${FILEBASENAME}
		/bin/cp -p ${FILE} ${INSTALL_DIR}/${FILEBASENAME}
		/bin/chmod ${MODE} ${INSTALL_DIR}/${FILEBASENAME}
	else 
			echo "${INSTALL_DIR}/${FILEBASENAME} is up to date"
	fi
done

exit 0