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135 lines
5.1 KiB
Bash
135 lines
5.1 KiB
Bash
#!/usr/bin/env bash
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# shellcheck disable=SC2230
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# vim:ts=4:sts=4:sw=4:et
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#
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# Author: Hari Sekhon
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# Date: Sun Sep 9 21:20:49 2012 +0100
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#
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# https://github.com/harisekhon/bash-tools
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#
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# License: see accompanying Hari Sekhon LICENSE file
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#
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# If you're using my code you're welcome to connect with me on LinkedIn and optionally send me feedback to help steer this or other code I publish
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#
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# https://www.linkedin.com/in/harisekhon
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#
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# ============================================================================ #
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# J a v a
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# ============================================================================ #
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bash_tools="${bash_tools:-$(dirname "${BASH_SOURCE[0]}")/..}"
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# shellcheck disable=SC1090
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. "$bash_tools/.bash.d/os_detection.sh"
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# shellcheck disable=SC1090
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type add_PATH &>/dev/null || . "$bash_tools/.bash.d/paths.sh"
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add_PATH CLASSPATH "$HOME/bin/java"
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# turn off those annoying Java 11 warnings when using Groovy scripting
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export GROOVY_TURN_OFF_JAVA_WARNINGS=true
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if isMac; then
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mac_export_java_home(){
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local version="$1"
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local args
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local java_home
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local java_library_base="/Library/Java/JavaVirtualMachines"
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local java_home_variable="JAVA_HOME"
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# for cross compiling to be found by gradle build
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if [ -n "$version" ]; then
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args="-v 1.$version"
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java_home_variable="JAVA${version}_HOME"
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fi
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if [ -x /usr/libexec/java_home ]; then
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# want arg splutting
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# shellcheck disable=SC2086
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java_home="$(/usr/libexec/java_home $args 2>/dev/null)"
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# $? is fine here thanks shellcheck
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# shellcheck disable=SC2181
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if [ $? -eq 0 ] && [ -d "$java_home" ]; then
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export "$java_home_variable"="$java_home"
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if [ -n "$DEBUG" ]; then
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echo "Determined $java_home_variable from /usr/libexec/java_home to be '$java_home', update ~/.bashrc to optimize by setting this explicitly" >&2
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fi
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fi
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else
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## java_home=/Library/Java/JavaVirtualMachines/jdk1.7.0_45.jdk/Contents/Home
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## JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Home
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## JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/Current/Home
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## JAVA_HOME=/System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home
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java_home="$(find "$java_library_base/"*1."$version"* -type d -name 'Home*' 2>/dev/null | tail -n1)"
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if [ -d "$java_home" ]; then
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export "$java_home_variable"="$java_home"
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if [ -n "$DEBUG" ]; then
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echo "Determined $java_home_variable from searching $java_library_base to be '$java_home', update ~/.bashrc to optimize by setting this explicitly" >&2
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fi
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fi
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fi
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}
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if [ -z "$JAVA_HOME" ]; then
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mac_export_java_home
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mac_export_java_home 7
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fi
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elif isLinux; then
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if [ -z "$JAVA_HOME" ]; then
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# RHEL / CentOS
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if type -P alternatives &>/dev/null; then
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java_home="$(alternatives --list | awk '/^java[[:space:]]/{print $3; exit}' | sed 's,\(/jre\)\?/bin/java$,,')"
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if [ -n "$java_home" ]; then
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export JAVA_HOME="$java_home"
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fi
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# Debian / Ubuntu
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elif type -P update-alternatives &>/dev/null; then
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java_home="$(update-alternatives --list java | sed 's,\(/jre\)\?/bin/java$,,' | head -n1)"
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if [ -n "$java_home" ]; then
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export JAVA_HOME="$java_home"
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fi
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# Alpine / Other / or if all else fails
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else
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# prefers Sun's JDK to OpenJDK, put it higher in the testing list
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# readlink -f => /etc/alternatives/java_sdk => /usr/lib/jvm/java-1.8.0-openjdk-1.8.0.222.b10-0.el7_6.x86_64
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for java_home in \
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/usr/java/latest \
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/usr/java/latest/jre \
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/usr/lib/jvm/java \
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/usr/lib/jvm/java-openjdk \
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/usr/lib/jvm/jre-openjdk \
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/usr/lib/jvm/jre \
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/usr/lib/jvm/default-jvm \
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; do # default-jvm is on Alpine
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if [ -x "$java_home/bin/java" ]; then
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export JAVA_HOME="$java_home"
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break
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fi
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done
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if [ -z "$JAVA_HOME" ]; then
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if [ -n "$DEBUG" ]; then
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echo "WARNING: failed to find JAVA_HOME" >&2
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fi
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# last ditch effort, this will work with warnings
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if [ -x /usr/bin/java ]; then
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export JAVA_HOME=/usr
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fi
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fi
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fi
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fi
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fi
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# haven't used this in many years
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#j(){
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# for x in "$@"; do
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# echo "javac $x" &&
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# javac "$x" &&
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# echo "java ${x%.java} $x" &&
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# java "${x%.java}" "$x"
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# done
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#}
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if ! type sdk &>/dev/null && [ -s ~/.sdkman/bin/sdkman-init.sh ]; then
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# shellcheck disable=SC1090
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source ~/.sdkman/bin/sdkman-init.sh
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fi
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