suffix=j2sdk1.4-sun
j2se_base="/usr/lib/$suffix"
priority=314

if [ ! -e "$j2se_base/debian/info" ]; then
    exit 0
fi

# alternative <program>
function program_alternative() {
    local program="$1"
    update-alternatives \
	--install "/usr/bin/$program" "$program" \
	"$j2se_base/bin/$program" "$priority" \
	--slave "/usr/share/man/man1/$program.1.gz" "$program.1.gz" \
	"$j2se_base/man/man1/$program.1.gz"
}

# kinit, klist, and ktab not installed at this
# time; handling of /etc/krb5.conf not addressed
# JRE-specific alternatives with JDKs cannot be 
# handled by our current approach
program_alternative appletviewer
program_alternative extcheck
program_alternative HtmlConverter
program_alternative idlj
program_alternative jar
program_alternative jarsigner
program_alternative java
program_alternative javac
program_alternative javadoc
program_alternative javah
program_alternative javap
program_alternative java-rmi.cgi
program_alternative jdb
program_alternative keytool
program_alternative native2ascii
program_alternative orbd
program_alternative policytool
program_alternative rmic
program_alternative rmid
program_alternative rmiregistry
program_alternative serialver
program_alternative servertool
program_alternative tnameserv

# derive the architecture-specific 
# directory for the plugin
arch_dir="$(dpkg --print-architecture)"

# assemble the plugin path
plugin_dir="$j2se_base/jre/plugin/$arch_dir"

# netscape
netscape_dir="/usr/lib/netscape/plugins-libc6"
[ -d "$netscape_dir" ] || install -d -m 755 "$netscape_dir"
update-alternatives \
    --install "$netscape_dir/libjavaplugin.so" \
	"netscape-javaplugin.so" \
    	"$plugin_dir/ns4/libjavaplugin.so" "$priority"

# mozilla
mozilla_dir="/usr/lib/mozilla/plugins"
[ -d "$mozilla_dir" ] || install -d -m 755 "$mozilla_dir"
update-alternatives \
    --install "$mozilla_dir/libjavaplugin.so" \
	"mozilla-javaplugin.so" \
    	"$plugin_dir/ns610-gcc32/libjavaplugin_oji.so" "$priority"

# firefox
firefox_dir="/usr/lib/mozilla-firefox/plugins"
[ -d "$firefox_dir" ] || install -d -m 755 "$firefox_dir"
update-alternatives \
    --install "$firefox_dir/libjavaplugin.so" \
	"firefox-javaplugin.so" \
    	"$plugin_dir/ns610-gcc32/libjavaplugin_oji.so" "$priority"
