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|
#!/bin/sh
#
# javawrapper.sh
#
# Allows to install several Java Virtual Machines
# on the same system and use config file/or environment
# variable to select wichever to use
#
# ----------------------------------------------------------------------------
# "THE BEER-WARE LICENSE" (Revision 42, (c) Poul-Henning Kamp):
# Maxim Sobolev <sobomax@FreeBSD.org> wrote this file. As long as you retain
# this notice you can do whatever you want with this stuff. If we meet some
# day, and you think this stuff is worth it, you can buy me a beer in return.
#
# Maxim Sobolev
# ----------------------------------------------------------------------------
#
# $FreeBSD$
#
# MAINTAINER= sobomax@FreeBSD.org
ARGS="${*}"
PREFIX="%%PREFIX%%"
CONF="${PREFIX}/etc/javavms"
IAM=`basename "${0}"`
tryrunVM () {
if [ -x "${1}" ]; then
exec "${1}" ${2}
fi
/bin/echo "${IAM}: warning: couldn't start specified JavaVM - \"${1}\"" >&2
}
registerVM () {
if [ x"${1}" = x"" ]; then
/bin/echo "Usage: ${IAM} path"
exit
fi
if [ ! -e "${CONF}" ]; then
/usr/bin/touch "${CONF}"
fi
VM=`/bin/echo "${1}" | sed 's|#.*||'`
if [ ! -x ${VM} ]; then
/bin/echo "${IAM}: warning: the specified JavaVM \"${VM}\" either not exists of not executable" >&2
fi
/bin/ed "${CONF}" >/dev/null <<EOF
0a
${1}
.
w
q
EOF
exit 0
}
unregisterVM () {
if [ x"${1}" = x"" ]; then
/bin/echo "Usage: ${IAM} path"
exit
fi
if [ ! -e "${CONF}" ]; then
/bin/echo "${IAM}: error: can't find ${CONF} config file!" >&2
exit 1
fi
if [ x"`grep ${1} ${CONF}`" = x"" ]; then
/bin/echo "${IAM}: error: \"${1}\" JavaVM is not currently registered"
exit 1
fi
/bin/ed "${CONF}" >/dev/null <<EOF
g|${1}|d
w
q
EOF
# Remove config file if its size reached 0
if [ ! -s "${CONF}" ]; then
/bin/rm "${CONF}"
fi
exit 0
}
case "${IAM}" in
registervm )
registerVM "${1}"
;;
unregistervm )
unregisterVM "${1}"
;;
esac
# Main ()
# First check if JAVAVM environment variable is set
if [ x"${JAVAVM}" != x"" ]; then
tryrunVM "${JAVAVM}" "${ARGS}"
fi
# Then try to make sure that ${CONF} exists
if [ ! -e "${CONF}" ]; then
echo "${IAM}: error: can't find ${CONF} config file" >&2
exit 1
fi
# Allow coment in the ${CONF}
VMS=`/usr/bin/sed 's|#.*||' < "${CONF}" | uniq`
# Finally try to run one of the ${VMS}
for JAVAVM in ${VMS}; do
tryrunVM "${JAVAVM}" "${ARGS}";
done
echo "${IAM}: error: no suitable JavaVMs found" >&2
exit 1
|
