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#!/bin/sh
#
# Small script to install a jar in multiple version-specific locations
#
# JPackage project
#
# $Id: jvmjar,v 1.1 2004/12/15 16:23:45 robert Exp $

# System-wide java configuration
JAVA_CONF="/etc/java/java.conf"

if [ -z "$JAVA_LIBDIR" ] ; then 
	[ -r "$JAVA_CONF" ] && . "$JAVA_CONF" || JAVA_LIBDIR="/usr/share/java"
fi

usage() {
cat << EOF_USAGE
Usage: $0 <l|u> <jar> <extension> <version> [<versionB> ... <versionZ>]
- l|u: link/unlink jars
- jar: name of the jar present in $JAVA_LIBDIR-ext to install as a jvm extension
       For example: jaf for $JAVA_LIBDIR-ext/jaf.jar
       Only required with -l
- extension: name under which the jar should be known in the jvm dirs
             For example: activation for activation.jar
             This is necessary when the same extension is provided by different
             jars depending on jvm version (i.e. classes.jar, classes12.jar and
             so on).
- versionX: versions of the java standard (1.2, 1.3...) that support this jar as
            an external extension
EOF_USAGE
exit 0
}

[ $# -lt 3 ] && usage

case "$1" in
    -l|--link|-c|--create)
	LINK="true"
	[ $# -lt 4 ] && usage
	shift
	ORIGINAL_JAR_NAME="$1"
	if ! [ -e "$JAVA_LIBDIR-ext/$ORIGINAL_JAR_NAME.jar" ] ; then
		echo "Could not find $JAVA_LIBDIR-ext/$ORIGINAL_JAR_NAME.jar" >&2
		exit 1
	fi
	;;
    -u|--unlink|-d|--delete)
	LINK="false"
	;;
    *)
	usage
esac

shift
EXTENSION_NAME="$1"
shift

for version in "$@" ; do
    if [ $LINK = "true" ] ; then
	[ -d $JAVA_LIBDIR-$version ] || install -d -m 755 $JAVA_LIBDIR-$version
	ln -fs "../java-ext/$ORIGINAL_JAR_NAME.jar" \
	    $JAVA_LIBDIR-$version/$EXTENSION_NAME.jar
    else
	rm -f "$JAVA_LIBDIR-$version/$EXTENSION_NAME.jar"
    fi
done