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#!/bin/bash
# Simple wrapper script used to start JOSM in Debian
set -e
# First, the alternative (if known to work) or users preference as defined by $JAVA_HOME. Next, use OpenJDK.
# Override to a specific one using $JAVACMD
if [ -e "/etc/alternatives/java" ]; then
ALTERNATIVE_JDK=$(readlink -n -f /etc/alternatives/java)
fi
if [ -v JAVA_HOME ]; then
JAVA_CMDS="$JAVA_HOME/bin/java"
else
JAVA_CMDS=""
fi
dpkg_java() {
# Let's get the current architecture -- needed for multiarchified Java
ARCH=$(dpkg --print-architecture 2> /dev/null || true)
# If OpenJDK is only available headless, do not try it
if dpkg --get-selections "openjdk-*-jre" | grep install$ > /dev/null \
|| dpkg --get-selections "openjdk-*-jre:$ARCH" | grep install$ > /dev/null ; then
# LTS versions in decreased order
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-21-openjdk/bin/java /usr/lib/jvm/java-21-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-17-openjdk/bin/java /usr/lib/jvm/java-17-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-11-openjdk/bin/java /usr/lib/jvm/java-11-openjdk-$ARCH/bin/java"
# Released versions in decreased order
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-22-openjdk/bin/java /usr/lib/jvm/java-22-openjdk-$ARCH/bin/java"
# EOL versions in decreased order
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-20-openjdk/bin/java /usr/lib/jvm/java-20-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-19-openjdk/bin/java /usr/lib/jvm/java-19-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-18-openjdk/bin/java /usr/lib/jvm/java-18-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-16-openjdk/bin/java /usr/lib/jvm/java-16-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-15-openjdk/bin/java /usr/lib/jvm/java-15-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-14-openjdk/bin/java /usr/lib/jvm/java-14-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-13-openjdk/bin/java /usr/lib/jvm/java-13-openjdk-$ARCH/bin/java"
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-12-openjdk/bin/java /usr/lib/jvm/java-12-openjdk-$ARCH/bin/java"
# Development version(s)
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/java-23-openjdk/bin/java /usr/lib/jvm/java-23-openjdk-$ARCH/bin/java"
fi
}
java_version() {
${1} -version 2>&1 | head -n1 | awk -F'"' '{print $2}' | awk -F'.' '{print $1}'
}
if dpkg --version > /dev/null 2>&1; then
dpkg_java
fi
# Undetermined version
JAVA_CMDS="${JAVA_CMDS} /usr/lib/jvm/default-java/bin/java /usr/bin/java"
JOSM_VERSION="josm-latest"
if [ -f "/etc/default/${JOSM_VERSION}" ]; then
# shellcheck source=/etc/default/josm-latest
. "/etc/default/${JOSM_VERSION}"
fi
# If there is more than 8G ram, we can use up to 75% of the memory while still leaving 2G for other things.
if [ "$(LC_ALL=C LANG=C free --mega | grep '^Mem:' | awk '{print $2}')" -gt 8192 ]; then
# But don't set anything if JAVA_OPTS is already set.
JAVA_OPTS="${JAVA_OPTS:=-XX:MaxRAMPercentage=75.0 -Xms256m}"
fi
JAVA_OPTS="-Djosm.restart=true -Djosm.dir.name=JOSM-latest -Djava.net.useSystemProxies=true $JAVA_OPTS"
if [ -z "${JAVACMD}" ] && [ -n "${ALTERNATIVE_JDK}" ]; then
for jcmd in $JAVA_CMDS; do
if [ "z$ALTERNATIVE_JDK" = "z$(readlink -n -f "$jcmd")" ] && [ -z "${JAVACMD}" ] && [ -x "$jcmd" ]; then
JAVACMD="$jcmd"
break
fi
done
fi
if [ -z "${JAVACMD}" ]; then
for jcmd in $JAVA_CMDS; do
if [ -x "$jcmd" ] && [ -z "${JAVACMD}" ]; then
JAVACMD="$jcmd"
break
fi
done
fi
if [ "$JAVACMD" ]; then
echo "Using $JAVACMD to execute ${JOSM_VERSION}." || true
JAVA_VERSION=$(java_version "${JAVACMD}")
JAVAFX_HOME="${JAVAFX_HOME:-/usr/share/openjfx/lib}"
JOSM_PATH="${JOSM_PATH:-/usr/share/${JOSM_VERSION}/${JOSM_VERSION}.jar}"
if [[ "${JAVA_VERSION}" -ge 11 ]]; then
if [[ -e "${JAVAFX_HOME}" ]]; then
JAVA_OPTS="--module-path ${JAVAFX_HOME} --add-modules java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web $JAVA_OPTS"
else
JAVA_OPTS="--add-modules java.scripting,java.sql $JAVA_OPTS"
fi
JAVA_OPTS="$JAVA_OPTS --add-exports=java.base/sun.security.action=ALL-UNNAMED"
JAVA_OPTS="$JAVA_OPTS --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED"
JAVA_OPTS="$JAVA_OPTS --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED"
elif [[ "${JAVA_VERSION}" -ge 9 ]]; then
JAVA_OPTS="--add-modules java.activation,java.se.ee $JAVA_OPTS"
fi
set +e
while true; do
# shellcheck disable=SC2086
$JAVACMD $JAVA_OPTS -jar "${JOSM_PATH}" "$@"
if [ "z$?" != "z9" ]; then
break
fi
echo ">> restarting josm..."
done
else
echo "No valid JVM found to run JOSM." || true
exit 1
fi
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