#!/bin/sh

set -e

case $(dpkg --print-architecture) in
  'i386'|'i586'|'i686'    ) arch=i386; dld=x86
   ;;
  'amd64'  ) arch=amd64; dld=x64
   ;;
	arm*      )
  arch=arm
	if [ `uname -m` = "armv7l" ] || [ `uname -m` = "armv6l" ]; then
		if [ -x /usr/bin/readelf ] ; then
			HARDFLOAT=`readelf -A /proc/self/exe | grep Tag_ABI_VFP_args`
			if [ -z "$HARDFLOAT" ]; then
				# Softfloat
				echo "Oracle Java 9 only supports ARM v6/v7 hardfloat ABI."
				#dld='arm-vfp-sflt'
			else
				# Hardfloat
				dld='arm-vfp-hflt'
			fi
		fi
	else
		echo "Oracle JDK 9 only supports ARM v6/v7 hardfloat."
		arch=''
	fi
	;;
  *         )
    echo "Please report to author unsupported platform '`uname -m`'.";
    echo "Proceeding without web browser plugin support";
    arch='';
esac

J_INSTALL_DIR=/usr/lib/jvm/java-9-oracle

if [ "$1" = "remove" ] || [ "$1" = "deconfigure" ]; then

    for f in $J_INSTALL_DIR/bin/*; do
        name=`basename $f`;
        if [ ! -f "/usr/bin/$name" -o -L "/usr/bin/$name" ]; then  #some files, like jvisualvm might not be links
            if [ -f "$J_INSTALL_DIR/man/man1/$name.1.gz" ]; then
				    	if [ ! $arch = "arm" ]; then
                update-alternatives --remove $name $J_INSTALL_DIR/bin/$name $LATEST
				    	else
				    		# There's no javaws, jvisualvm or jmc on arm
				    		[ ! $name = "javaws" ] && [ ! $name = "jvisualvm" ] && [ ! $name = "jmc" ] && update-alternatives --remove $name $J_INSTALL_DIR/bin/$name
				    	fi
             else #no man pages available
                # [ ! $name = "javaws.real" ] = skip javaws.real     
                [ ! $name = "javaws.real" ] && update-alternatives --remove $name $J_INSTALL_DIR/bin/$name $LATEST
             fi
        fi
    done

    #This will issue ignorable warnings for alternatives that are not part of a group
    if [ -d "$J_INSTALL_DIR/man/man1" ];then
        for f in $J_INSTALL_DIR/man/man1/*; do
            name=`basename $f .1.gz`;
            #some files, like jvisualvm might not be links. Further assume this for corresponding man page
            if [ ! -f "/usr/bin/$name" -o -L "/usr/bin/$name" ]; then
                if [ ! -f "$J_INSTALL_DIR/man/man1/$name.1.gz" ]; then
                    name=`basename $f .1`;          #handle any legacy uncompressed pages
                fi
                update-alternatives --remove $name $J_INSTALL_DIR/bin/$name
            fi
        done

    else  #no man pages available
				if [ -e $J_INSTALL_DIR/bin/ ]; then
      		for f in $J_INSTALL_DIR/bin/*; do
        		  name=`basename $f`;
        		  if [ ! -f "/usr/bin/$name" -o -L "/usr/bin/$name" ]; then  #some files, like jvisualvm might not be links
        		      update-alternatives --remove $name $J_INSTALL_DIR/bin/$name
         			fi
      		done
				fi
    fi


if which update-binfmts >/dev/null; then
    # try to remove and ignore the error
    if [ -e /var/lib/binfmts/jar ]; then
        update-binfmts --package oracle-java9 --remove jar /usr/bin/jexec || true
    fi
fi

#Remove links without man pages
[ -f $J_INSTALL_DIR/bin/jcontrol ]    && update-alternatives --remove    jcontrol    $J_INSTALL_DIR/bin/jcontrol

#Remove manually installed jexec
[ -f $J_INSTALL_DIR/lib/jexec ] && update-alternatives --remove jexec $J_INSTALL_DIR/lib/jexec
[ -f $J_INSTALL_DIR/bin/java ] && update-alternatives --remove java $J_INSTALL_DIR/bin/java

#Remove Firefox (and compatible) plugin.
[ -f $J_INSTALL_DIR/lib/$arch/libnpjp2.so ] && update-alternatives --remove mozilla-javaplugin.so $J_INSTALL_DIR/lib/$arch/libnpjp2.so

fi


#DEBHELPER#

exit 0

# vim: ts=2 sw=2