Upgrades java.sh to be more thorough and respect already configured environments.
This commit is contained in:
175
.rc.d/java.sh
175
.rc.d/java.sh
@@ -1,18 +1,159 @@
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# TODO: Use find to get subdirs. Filter by vendor. Filter by version. Find the "best" version/vendor combo.
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# Setup Java environment (JAVA_HOME, JDK_HOME, and PATH)
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# Highest microsoft version, if not fallback to highest non-ms version
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_setup_java() {
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# Brew has graalvm (17,21), microsoft (11,17,21), oracle(17,21), sapmachine, semeru (8,11,17,21)
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[ -n "$ZSH_VERSION" ] && setopt localoptions nonomatch nullglob
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if [ -z "${JAVA_HOME}" -a -d "/Library/Java/JavaVirtualMachines/microsoft-21.jdk/Contents/Home" ]; then
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JAVA_HOME=/Library/Java/JavaVirtualMachines/microsoft-21.jdk/Contents/Home
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elif [ -z "${JAVA_HOME}" -a -d "/Library/Java/JavaVirtualMachines/microsoft-17.jdk/Contents/Home" ]; then
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JAVA_HOME=/Library/Java/JavaVirtualMachines/microsoft-17.jdk/Contents/Home
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elif [ -z "${JAVA_HOME}" -a -d "/Library/Java/JavaVirtualMachines/microsoft-11.jdk/Contents/Home" ]; then
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JAVA_HOME=/Library/Java/JavaVirtualMachines/microsoft-11.jdk/Contents/Home
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elif [ -z "${JAVA_HOME}" -a -d "/Applications/Android\ Studio.app/Contents/jre/jdk/Contents/Home" ]; then
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JAVA_HOME=/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home
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fi
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if [ -n "$JAVA_HOME" ]; then
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_is_valid_jre() {
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path=("$JAVA_HOME/bin" $path)
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[ -n "$1" ] && [ -d "$1" ] && [ -x "$1/bin/java" ]
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export JAVA_HOME
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}
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export PATH
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fi
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_is_valid_jdk() {
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_is_valid_jre "$1" && [ -x "$1/bin/javac" ]
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}
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_add_to_path() {
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[ -d "$1" ] || return 0
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case ":$PATH:" in
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*":$1:"*) ;;
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*) PATH="$1:$PATH"; export PATH ;;
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esac
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}
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# 1. If user already has a valid JAVA_HOME configured, respect it
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_has_user_jre=0
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if _is_valid_jre "${JAVA_HOME:-}"; then
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_has_user_jre=1
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_add_to_path "$JAVA_HOME/bin"
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if _is_valid_jdk "$JAVA_HOME"; then
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[ -z "$JDK_HOME" ] && export JDK_HOME="$JAVA_HOME"
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fi
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fi
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# If both a valid JRE (JAVA_HOME) and JDK (JDK_HOME) are already configured, we are done
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if [ "$_has_user_jre" -eq 1 ] && [ -n "$JDK_HOME" ] && _is_valid_jdk "$JDK_HOME"; then
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return 0
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fi
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# 2. Gather candidates across macOS and Linux
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_candidates=()
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# macOS tool: /usr/libexec/java_home
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if [ "$(uname -s 2>/dev/null)" = "Darwin" ] && [ -x "/usr/libexec/java_home" ]; then
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_jh=$(/usr/libexec/java_home 2>/dev/null)
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[ -n "$_jh" ] && _candidates+=("$_jh")
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fi
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# Linux tools: update-java-alternatives (Debian/Ubuntu) and readlink on java command
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if command -v update-java-alternatives >/dev/null 2>&1; then
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for _alt_path in $(update-java-alternatives -l 2>/dev/null | awk '{print $NF}'); do
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[ -d "$_alt_path" ] && _candidates+=("$_alt_path")
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done
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fi
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if command -v java >/dev/null 2>&1; then
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_java_bin=$(command -v java 2>/dev/null)
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if command -v readlink >/dev/null 2>&1; then
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_real_java=$(readlink -f "$_java_bin" 2>/dev/null)
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if [ -n "$_real_java" ] && [ -x "$_real_java" ]; then
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_alt_home="$(dirname "$(dirname "$_real_java")")"
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[ -n "$_alt_home" ] && _candidates+=("$_alt_home")
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fi
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fi
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fi
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# Cross-platform user managers (SDKMAN)
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[ -d "$HOME/.sdkman/candidates/java/current" ] && _candidates+=("$HOME/.sdkman/candidates/java/current")
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# macOS locations
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if [ "$(uname -s 2>/dev/null)" = "Darwin" ]; then
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# Homebrew OpenJDK
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for _d in /opt/homebrew/opt/openjdk/libexec/openjdk.jdk/Contents/Home \
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/opt/homebrew/opt/openjdk@*/libexec/openjdk.jdk/Contents/Home \
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/usr/local/opt/openjdk/libexec/openjdk.jdk/Contents/Home; do
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[ -d "$_d" ] && _candidates+=("$_d")
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done
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# Installed JVMs in /Library/Java/JavaVirtualMachines and ~/Library/...
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# Version-sorted descending to prefer newer releases
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for _d in $(
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for _jvm in /Library/Java/JavaVirtualMachines/*/Contents/Home \
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"$HOME/Library/Java/JavaVirtualMachines"/*/Contents/Home; do
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[ -d "$_jvm" ] && echo "$_jvm"
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done | sort -V -r 2>/dev/null
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); do
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_candidates+=("$_d")
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done
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# Android Studio bundled JBR/JDK
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for _d in \
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"/Applications/Android Studio.app/Contents/jbr/Contents/Home" \
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"/Applications/Android Studio.app/Contents/jre/Contents/Home" \
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"/Applications/Android Studio.app/Contents/jre/jdk/Contents/Home" \
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"$HOME/Applications/Android Studio.app/Contents/jbr/Contents/Home" \
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"$HOME/Applications/Android Studio.app/Contents/jre/Contents/Home"
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do
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[ -d "$_d" ] && _candidates+=("$_d")
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done
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fi
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# Linux / WSL locations
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if [ "$(uname -s 2>/dev/null)" = "Linux" ]; then
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# Default java symlink on Debian/Ubuntu
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[ -d "/usr/lib/jvm/default-java" ] && _candidates+=("/usr/lib/jvm/default-java")
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# Distribution JVMs in /usr/lib/jvm, version-sorted descending
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for _d in $(
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for _jvm in /usr/lib/jvm/*; do
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[ -d "$_jvm" ] && echo "$_jvm"
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done | sort -V -r 2>/dev/null
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); do
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_candidates+=("$_d")
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done
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for _d in \
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"/usr/java/latest" \
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"/usr/java/default" \
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"/opt/android-studio/jbr" \
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"/opt/android-studio/jre" \
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"$HOME/android-studio/jbr" \
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"$HOME/.local/share/JetBrains/Toolbox/apps/android-studio/jbr"
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do
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[ -d "$_d" ] && _candidates+=("$_d")
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done
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fi
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# 3. Evaluate candidates: find best JRE (preferring SDK JREs) and best JDK
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_best_jdk=""
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_best_jre=""
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for _cand in "${_candidates[@]}"; do
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if [ -n "$_cand" ]; then
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if _is_valid_jdk "$_cand"; then
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[ -z "$_best_jdk" ] && _best_jdk="$_cand"
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[ -z "$_best_jre" ] && _best_jre="$_cand"
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elif _is_valid_jre "$_cand"; then
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[ -z "$_best_jre" ] && _best_jre="$_cand"
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fi
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if [ -n "$_best_jdk" ] && [ -n "$_best_jre" ]; then
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break
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fi
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fi
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done
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# 4. If no valid JAVA_HOME was set by user, configure it with best JRE (preferring SDK)
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if [ "$_has_user_jre" -eq 0 ] && [ -n "$_best_jre" ]; then
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export JAVA_HOME="$_best_jre"
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_add_to_path "$JAVA_HOME/bin"
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fi
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# 5. If no SDK/JDK_HOME is set, configure it with best JDK
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if [ -z "$JDK_HOME" ] || ! _is_valid_jdk "$JDK_HOME"; then
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if _is_valid_jdk "${JAVA_HOME:-}"; then
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export JDK_HOME="$JAVA_HOME"
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elif [ -n "$_best_jdk" ]; then
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export JDK_HOME="$_best_jdk"
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_add_to_path "$_best_jdk/bin"
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fi
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fi
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}
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_setup_java
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unset -f _setup_java _is_valid_jre _is_valid_jdk _add_to_path
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