#!/bin/bash
#
# Version adjusted to work on macOS Ventura+.
# https://github.com/pskowronek/gradle-macappbundle
# forked from unmaintained: https://github.com/crotwell/gradle-macappbundle
#
##################################################################################
#                                                                                #
# universalJavaApplicationStub                                                   #
#                                                                                #
# A BASH based JavaApplicationStub for Java Apps on Mac OS X                     #
# that works with both Apple's and Oracle's plist format.                        #
#                                                                                #
# Inspired by Ian Roberts stackoverflow answer                                   #
# at http://stackoverflow.com/a/17546508/1128689                                 #
#                                                                                #
# @author    Tobias Fischer                                                      #
# @url       https://github.com/tofi86/universalJavaApplicationStub              #
# @date      2018-08-24                                                          #
# @version   3.0.4                                                               #
#                                                                                #
##################################################################################
#                                                                                #
# The MIT License (MIT)                                                          #
#                                                                                #
# Copyright (c) 2014-2018 Tobias Fischer                                         #
#                                                                                #
# Permission is hereby granted, free of charge, to any person obtaining a copy   #
# of this software and associated documentation files (the "Software"), to deal  #
# in the Software without restriction, including without limitation the rights   #
# to use, copy, modify, merge, publish, distribute, sublicense, and/or sell      #
# copies of the Software, and to permit persons to whom the Software is          #
# furnished to do so, subject to the following conditions:                       #
#                                                                                #
# The above copyright notice and this permission notice shall be included in all #
# copies or substantial portions of the Software.                                #
#                                                                                #
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR     #
# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,       #
# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE    #
# AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER         #
# LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,  #
# OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE  #
# SOFTWARE.                                                                      #
#                                                                                #
##################################################################################



# function 'stub_logger()'
#
# A logger which logs to the macOS Console.app using the 'syslog' command
#
# @param1  the log message
# @return  void
################################################################################
function stub_logger() {
  # Debug logging, as that that syslog below is unreliable for me
  #echo "$1" >> /tmp/logs_pls

  syslog -s -k \
    Facility com.apple.console \
    Level Error \
    Sender "$(basename "$0")" \
    # when CFBundleName is present it stops logging
    #Message "[$$][${CFBundleName:-$(basename "$0")}] $1"
    Message "[$$][$(basename "$0")] $1"
}



# set the directory abspath of the current
# shell script with symlinks being resolved
############################################

PRG=$0
while [ -h "$PRG" ]; do
  ls=$(ls -ld "$PRG")
  link=$(expr "$ls" : '^.*-> \(.*\)$' 2>/dev/null)
  if expr "$link" : '^/' 2> /dev/null >/dev/null; then
    PRG="$link"
  else
    PRG="$(dirname "$PRG")/$link"
  fi
done
PROGDIR=$(dirname "$PRG")
stub_logger "[StubDir] $PROGDIR"

# set files and folders
############################################

# the absolute path of the app package
cd "$PROGDIR"/../../ || exit 11
AppPackageFolder=$(pwd)

# the base path of the app package
cd .. || exit 12
AppPackageRoot=$(pwd)

# set Apple's Java folder
AppleJavaFolder="${AppPackageFolder}"/Contents/Resources/Java

# set Apple's Resources folder
AppleResourcesFolder="${AppPackageFolder}"/Contents/Resources

# set Oracle's Java folder
OracleJavaFolder="${AppPackageFolder}"/Contents/Java

# set Oracle's Resources folder
OracleResourcesFolder="${AppPackageFolder}"/Contents/Resources

# set path to Info.plist in bundle
InfoPlistFile="${AppPackageFolder}"/Contents/Info.plist

# set the default JVM Version to a null string
JVMVersion=""
JVMMaxVersion=""


# function 'plist_get()'
#
# read a specific Plist key with 'PlistBuddy' utility
#
# @param1  the Plist key with leading colon ':'
# @return  the value as String or Array
################################################################################
plist_get(){
  /usr/libexec/PlistBuddy -c "print $1" "${InfoPlistFile}" 2> /dev/null
}

# function 'plist_get_java()'
#
# read a specific Plist key with 'PlistBuddy' utility
# in the 'Java' or 'JavaX' dictionary (<dict>)
#
# @param1  the Plist :Java(X):Key with leading colon ':'
# @return  the value as String or Array
################################################################################
plist_get_java(){
  plist_get ${JavaKey:-":Java"}$1
}

# read Info.plist and extract JVM options
############################################

# read the program name from CFBundleName
CFBundleName=$(plist_get ':CFBundleName')

# read the icon file name
CFBundleIconFile=$(plist_get ':CFBundleIconFile')

# check Info.plist for Apple style Java keys -> if key :Java is present, parse in apple mode
/usr/libexec/PlistBuddy -c "print :Java" "${InfoPlistFile}" > /dev/null 2>&1
exitcode=$?
JavaKey=":Java"

# if no :Java key is present, check Info.plist for universalJavaApplication style JavaX keys -> if key :JavaX is present, parse in apple mode
if [ $exitcode -ne 0 ]; then
  /usr/libexec/PlistBuddy -c "print :JavaX" "${InfoPlistFile}" > /dev/null 2>&1
  exitcode=$?
  JavaKey=":JavaX"
fi

# read 'Info.plist' file in Apple style if exit code returns 0 (true, ':Java' key is present)
if [ $exitcode -eq 0 ]; then
  stub_logger "[PlistStyle] Apple"

  # set Java and Resources folder
  JavaFolder="${AppleJavaFolder}"
  ResourcesFolder="${AppleResourcesFolder}"

  APP_PACKAGE="${AppPackageFolder}"
  JAVAROOT="${AppleJavaFolder}"
  USER_HOME="$HOME"


  # read the Java WorkingDirectory
  JVMWorkDir=$(plist_get_java ':WorkingDirectory' | xargs)
  # set Working Directory based upon PList value
  if [[ ! -z ${JVMWorkDir} ]]; then
    WorkingDirectory="${JVMWorkDir}"
  else
    # AppPackageRoot is the standard WorkingDirectory when the script is started
    WorkingDirectory="${AppPackageRoot}"
  fi
  # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
  WorkingDirectory=$(eval echo "${WorkingDirectory}")


  # read the MainClass name
  JVMMainClass="$(plist_get_java ':MainClass')"

  # read the SplashFile name
  JVMSplashFile=$(plist_get_java ':SplashFile')

  # read the JVM Properties as an array and retain spaces
  IFS=$'\t\n'
  JVMOptions=($(xargs -n1 <<<$(plist_get_java ':Properties' | grep " =" | sed 's/^ */-D/g' | sed -E 's/ = (.*)$/="\1"/g')))
  # /'
  unset IFS
  # post processing of the array follows further below...

  # read the ClassPath in either Array or String style
  JVMClassPath_RAW=$(plist_get_java ':ClassPath' | xargs)
  if [[ $JVMClassPath_RAW == *Array* ]] ; then
    JVMClassPath=.$(plist_get_java ':ClassPath' | grep "    " | sed 's/^ */:/g' | tr -d '\n' | xargs)
  else
    JVMClassPath=${JVMClassPath_RAW}
  fi
  # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
  JVMClassPath=$(eval echo "${JVMClassPath}")

  # read the JVM Options in either Array or String style
  JVMDefaultOptions_RAW=$(plist_get_java ':VMOptions' | xargs)
  if [[ $JVMDefaultOptions_RAW == *Array* ]] ; then
    JVMDefaultOptions=$(plist_get_java ':VMOptions' | grep "    " | sed 's/^ */ /g' | tr -d '\n' | xargs)
  else
    JVMDefaultOptions=${JVMDefaultOptions_RAW}
  fi

  # read StartOnMainThread and add as -XstartOnFirstThread
  JVMStartOnMainThread=$(plist_get_java ':StartOnMainThread')
  if [ "${JVMStartOnMainThread}" == "true" ]; then
    JVMDefaultOptions+=" -XstartOnFirstThread"
  fi

  # read the JVM Arguments as an array and retain spaces
  IFS=$'\t\n'
  MainArgs=($(xargs -n1 <<<$(plist_get_java ':Arguments')))
  unset IFS
  # post processing of the array follows further below...

  # read the Java version we want to find
  JVMVersion=$(plist_get_java ':JVMVersion' | xargs)
  # post processing of the version string follows below...


# read 'Info.plist' file in Oracle style
else
  stub_logger "[PlistStyle] Oracle"

  # set Working Directory and Java and Resources folder
  JavaFolder="${OracleJavaFolder}"
  ResourcesFolder="${OracleResourcesFolder}"
  WorkingDirectory="${OracleJavaFolder}"

  APP_ROOT="${AppPackageFolder}"

  # read the MainClass name
  JVMMainClass="$(plist_get ':JVMMainClassName')"

  # read the SplashFile name
  JVMSplashFile=$(plist_get ':JVMSplashFile')

  # read the JVM Options as an array and retain spaces
  IFS=$'\t\n'
  JVMOptions=($(plist_get ':JVMOptions' | grep "    " | sed 's/^ *//g'))
  unset IFS
  # post processing of the array follows further below...

  # read the ClassPath in either Array or String style
  JVMClassPath_RAW=$(plist_get ':JVMClassPath')
  if [[ $JVMClassPath_RAW == *Array* ]] ; then
    JVMClassPath=.$(plist_get ':JVMClassPath' | grep "    " | sed 's/^ */:/g' | tr -d '\n' | xargs)
    # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
    JVMClassPath=$(eval echo "${JVMClassPath}")

  elif [[ ! -z ${JVMClassPath_RAW} ]] ; then
    JVMClassPath=${JVMClassPath_RAW}
    # expand variables $APP_PACKAGE, $JAVAROOT, $USER_HOME
    JVMClassPath=$(eval echo "${JVMClassPath}")

  else
    #default: fallback to OracleJavaFolder
    JVMClassPath="${JavaFolder}/*"
    # Do NOT expand the default 'AppName.app/Contents/Java/*' classpath (#42)
  fi

  # read the JVM Default Options
  JVMDefaultOptions=$(plist_get ':JVMDefaultOptions' | grep -o " \-.*" | tr -d '\n' | xargs)

  # read the Main Arguments from JVMArguments key as an array and retain spaces (see #46 for naming details)
  IFS=$'\t\n'
  MainArgs=($(xargs -n1 <<<$(plist_get ':JVMArguments' | tr -d '\n' | sed -E 's/Array \{ *(.*) *\}/\1/g' | sed 's/  */ /g')))
  unset IFS
  # post processing of the array follows further below...

  # read the Java version we want to find
  JVMVersion=$(plist_get ':JVMVersion' | xargs)
  # post processing of the version string follows below...
fi



# JVMVersion: post processing and optional splitting
if [[ ${JVMVersion} == *";"* ]]; then
  minMaxArray=(${JVMVersion//;/ })
  JVMVersion=${minMaxArray[0]//+}
  JVMMaxVersion=${minMaxArray[1]//+}
fi
stub_logger "[JavaRequirement] JVM minimum version: ${JVMVersion}"
stub_logger "[JavaRequirement] JVM maximum version: ${JVMMaxVersion}"

# MainArgs: replace occurrences of $APP_ROOT with its content
MainArgsArr=()
for i in "${MainArgs[@]}"
do
  MainArgsArr+=("$(eval echo "$i")")
done

# JVMOptions: replace occurrences of $APP_ROOT with its content
JVMOptionsArr=()
for i in "${JVMOptions[@]}"
do
  JVMOptionsArr+=("$(eval echo "$i")")
done


# internationalized messages
############################################

LANG=$(defaults read -g AppleLocale)
stub_logger "[Language] $LANG"

# French localization
if [[ $LANG == fr* ]] ; then
  MSG_ERROR_LAUNCHING="ERREUR au lancement de '${CFBundleName}'."
  MSG_MISSING_MAINCLASS="'MainClass' n'est pas spécifié.\nL'application Java ne peut pas être lancée."
  MSG_JVMVERSION_REQ_INVALID="La syntaxe de la version Java demandée est invalide: %s\nVeuillez contacter le développeur de l'application."
  MSG_NO_SUITABLE_JAVA="La version de Java installée sur votre système ne convient pas.\nCe programme nécessite Java %s"
  MSG_JAVA_VERSION_OR_LATER="ou ultérieur"
  MSG_JAVA_VERSION_LATEST="(dernière mise à jour)"
  MSG_JAVA_VERSION_MAX="à %s"
  MSG_NO_SUITABLE_JAVA_CHECK="Merci de bien vouloir installer la version de Java requise."
  MSG_INSTALL_JAVA="Java doit être installé sur votre système.\nRendez-vous sur java.com et suivez les instructions d'installation..."
  MSG_LATER="Plus tard"
  MSG_VISIT_JAVA_DOT_COM="Visiter java.com"

# German localization
elif [[ $LANG == de* ]] ; then
  MSG_ERROR_LAUNCHING="FEHLER beim Starten von '${CFBundleName}'."
  MSG_MISSING_MAINCLASS="Die 'MainClass' ist nicht spezifiziert!\nDie Java-Anwendung kann nicht gestartet werden!"
  MSG_JVMVERSION_REQ_INVALID="Die Syntax der angeforderten Java-Version ist ungültig: %s\nBitte kontaktieren Sie den Entwickler der App."
  MSG_NO_SUITABLE_JAVA="Es wurde keine passende Java-Version auf Ihrem System gefunden!\nDieses Programm benötigt Java %s"
  MSG_JAVA_VERSION_OR_LATER="oder neuer"
  MSG_JAVA_VERSION_LATEST="(neuste Unterversion)"
  MSG_JAVA_VERSION_MAX="bis %s"
  MSG_NO_SUITABLE_JAVA_CHECK="Stellen Sie sicher, dass die angeforderte Java-Version installiert ist."
  MSG_INSTALL_JAVA="Auf Ihrem System muss die 'Java'-Software installiert sein.\nBesuchen Sie java.com für weitere Installationshinweise."
  MSG_LATER="Später"
  MSG_VISIT_JAVA_DOT_COM="java.com öffnen"

# Simplifyed Chinese localization
elif [[ $LANG == zh* ]] ; then
  MSG_ERROR_LAUNCHING="无法启动 '${CFBundleName}'."
  MSG_MISSING_MAINCLASS="没有指定 'MainClass'！\nJava程序无法启动!"
  MSG_JVMVERSION_REQ_INVALID="Java版本参数语法错误: %s\n请联系该应用的开发者。"
  MSG_NO_SUITABLE_JAVA="没有在系统中找到合适的Java版本！\n必须安装Java %s才能够使用该程序！"
  MSG_JAVA_VERSION_OR_LATER="及以上版本"
  MSG_JAVA_VERSION_LATEST="（最新版本）"
  MSG_JAVA_VERSION_MAX="最高为 %s"
  MSG_NO_SUITABLE_JAVA_CHECK="请确保系统中安装了所需的Java版本"
  MSG_INSTALL_JAVA="你需要在Mac中安装Java运行环境！\n访问 java.com 了解如何安装。"
  MSG_LATER="稍后"
  MSG_VISIT_JAVA_DOT_COM="访问 java.com"

# English default localization
else
  MSG_ERROR_LAUNCHING="ERROR launching '${CFBundleName}'."
  MSG_MISSING_MAINCLASS="'MainClass' isn't specified!\nJava application cannot be started!"
  MSG_JVMVERSION_REQ_INVALID="The syntax of the required Java version is invalid: %s\nPlease contact the App developer."
  MSG_NO_SUITABLE_JAVA="No suitable Java version found on your system!\nThis program requires Java %s"
  MSG_JAVA_VERSION_OR_LATER="or later"
  MSG_JAVA_VERSION_LATEST="(latest update)"
  MSG_JAVA_VERSION_MAX="up to %s"
  MSG_NO_SUITABLE_JAVA_CHECK="Make sure you install the required Java version."
  MSG_INSTALL_JAVA="You need to have JAVA installed on your Mac!\nVisit java.com for installation instructions..."
  MSG_LATER="Later"
  MSG_VISIT_JAVA_DOT_COM="Visit java.com"
fi



# function 'get_java_version_from_cmd()'
#
# returns Java version string from 'java -version' command
# works for both old (1.8) and new (9) version schema
#
# @param1  path to a java JVM executable
# @return  the Java version number as displayed in 'java -version' command
################################################################################
function get_java_version_from_cmd() {
  # second sed command strips " and -ea from the version string
  echo $("$1" -version 2>&1 | awk '/version/{print $3}' | sed -E 's/"//g;s/-ea//g')
}


# function 'extract_java_major_version()'
#
# extract Java major version from a version string
#
# @param1  a Java version number ('1.8.0_45') or requirement string ('1.8+')
# @return  the major version (e.g. '7', '8' or '9', etc.)
################################################################################
function extract_java_major_version() {
  echo $(echo "$1" | sed -E 's/^1\.//;s/^([0-9]+)(-ea|(\.[0-9_.]{1,7})?)(-b[0-9]+-[0-9]+)?[+*]?$/\1/')
}


# function 'get_comparable_java_version()'
#
# return comparable version for a Java version number or requirement string
#
# @param1  a Java version number ('1.8.0_45') or requirement string ('1.8+')
# @return  an 8 digit numeral ('1.8.0_45'->'08000045'; '9.1.13'->'09001013')
################################################################################
function get_comparable_java_version() {
  # cleaning: 1) remove leading '1.'; 2) remove build string (e.g. '-b14-468'); 3) remove 'a-Z' and '-*+' (e.g. '-ea'); 4) replace '_' with '.'
  local cleaned=$(echo "$1" | sed -E 's/^1\.//g;s/-b[0-9]+-[0-9]+$//g;s/[a-zA-Z+*\-]//g;s/_/./g')
  # splitting at '.' into an array
  local arr=( ${cleaned//./ } )
  # echo a string with left padded version numbers
  echo "$(printf '%02s' ${arr[0]})$(printf '%03s' ${arr[1]})$(printf '%03s' ${arr[2]})"
}


# function 'is_valid_requirement_pattern()'
#
# check whether the Java requirement is a valid requirement pattern
#
# supported requirements are for example:
# - 1.6       requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6*      requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6+      requires Java 6 or higher         [1.6, 1.6.0_45, 1.8, 9, etc.]
# - 1.6.0     requires Java 6 (any update)      [1.6, 1.6.0_45, 1.6.0_88]
# - 1.6.0_45  requires Java 6u45                [1.6.0_45]
# - 1.6.0_45+ requires Java 6u45 or higher      [1.6.0_45, 1.6.0_88, 1.8, etc.]
# - 9         requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
# - 9*        requires Java 9 (any update)      [9.0.*, 9.1, 9.3, etc.]
# - 9+        requires Java 9 or higher         [9.0, 9.1, 10, etc.]
# - 9.1       requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
# - 9.1*      requires Java 9.1 (any update)    [9.1.*, 9.1.2, 9.1.13, etc.]
# - 9.1+      requires Java 9.1 or higher       [9.1, 9.2, 10, etc.]
# - 9.1.3     requires Java 9.1.3               [9.1.3]
# - 9.1.3*    requires Java 9.1.3 (any update)  [9.1.3]
# - 9.1.3+    requires Java 9.1.3 or higher     [9.1.3, 9.1.4, 9.2.*, 10, etc.]
# - 10-ea     requires Java 10 (early access release)
#
# unsupported requirement patterns are for example:
# - 1.2, 1.3, 1.9       Java 2, 3 are not supported
# - 1.9                 Java 9 introduced a new versioning scheme
# - 6u45                known versioning syntax, but unsupported
# - 9-ea*, 9-ea+        early access releases paired with */+
# - 9., 9.*, 9.+        version ending with a .
# - 9.1., 9.1.*, 9.1.+  version ending with a .
# - 9.3.5.6             4 part version number is unsupported
#
# @param1  a Java requirement string ('1.8+')
# @return  boolean exit code: 0 (is valid), 1 (is not valid)
################################################################################
function is_valid_requirement_pattern() {
  local java_req=$1
  java8pattern='1\.[4-8](\.0)?(\.0_[0-9]+)?[*+]?'
  java9pattern='(9|1[0-9])(-ea|[*+]|(\.[0-9]+){1,2}[*+]?)?'
  # test matches either old Java versioning scheme (up to 1.8) or new scheme (starting with 9)
  if [[ ${java_req} =~ ^(${java8pattern}|${java9pattern})$ ]]; then
    return 0
  else
    return 1
  fi
}



# determine which JVM to use
############################################

# default Apple JRE plugin path (< 1.6)
apple_jre_plugin="/Library/Java/Home/bin/java"
apple_jre_version=$(get_java_version_from_cmd "${apple_jre_plugin}")
# default Oracle JRE plugin path (>= 1.7)
oracle_jre_plugin="/Library/Internet Plug-Ins/JavaAppletPlugin.plugin/Contents/Home/bin/java"
oracle_jre_version=$(get_java_version_from_cmd "${oracle_jre_plugin}")


# first check system variable "$JAVA_HOME" -> has precedence over any other System JVM
stub_logger '[JavaSearch] Checking for $JAVA_HOME ...'
if [ -n "$JAVA_HOME" ] ; then
  stub_logger "[JavaSearch] ... found JAVA_HOME with value $JAVA_HOME"

  # PR 26: Allow specifying "$JAVA_HOME" relative to "$AppPackageFolder"
  # which allows for bundling a custom version of Java inside your app!
  if [[ $JAVA_HOME == /* ]] ; then
    # if "$JAVA_HOME" starts with a Slash it's an absolute path
    JAVACMD="$JAVA_HOME/bin/java"
  else
    # otherwise it's a relative path to "$AppPackageFolder"
    JAVACMD="$AppPackageFolder/$JAVA_HOME/bin/java"
  fi
  JAVACMD_version=$(get_comparable_java_version $(get_java_version_from_cmd "${JAVACMD}"))
else
  stub_logger "[JavaSearch] ... didn't find JAVA_HOME"
fi


# check for any other or a specific Java version
# also if $JAVA_HOME exists but isn't executable
if [ -z "${JAVACMD}" ] || [ ! -x "${JAVACMD}" ] ; then
  stub_logger "[JavaSearch] Checking for JavaVirtualMachines on the system ..."
  # reset variables
  JAVACMD=""
  JAVACMD_version=""

  # first check whether JVMVersion string is a valid requirement string
  if [ ! -z "${JVMVersion}" ] && ! is_valid_requirement_pattern ${JVMVersion} ; then
    MSG_JVMVERSION_REQ_INVALID_EXPANDED=$(printf "${MSG_JVMVERSION_REQ_INVALID}" "${JVMVersion}")
    # log exit cause
    stub_logger "[EXIT 4] ${MSG_JVMVERSION_REQ_INVALID_EXPANDED}"
    # display error message with AppleScript
    osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_JVMVERSION_REQ_INVALID_EXPANDED}\" with title \"${CFBundleName}\" buttons {\" OK \"} default button 1 with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)"
    # exit with error
    exit 4
  fi
  # then check whether JVMMaxVersion string is a valid requirement string
  if [ ! -z "${JVMMaxVersion}" ] && ! is_valid_requirement_pattern ${JVMMaxVersion} ; then
    MSG_JVMVERSION_REQ_INVALID_EXPANDED=$(printf "${MSG_JVMVERSION_REQ_INVALID}" "${JVMMaxVersion}")
    # log exit cause
    stub_logger "[EXIT 5] ${MSG_JVMVERSION_REQ_INVALID_EXPANDED}"
    # display error message with AppleScript
    osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_JVMVERSION_REQ_INVALID_EXPANDED}\" with title \"${CFBundleName}\" buttons {\" OK \"} default button 1 with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)"
    # exit with error
    exit 5
  fi

  # find installed JavaVirtualMachines (JDK + JRE)
  allJVMs=()

  macosVerMajor=$(sw_vers --productVersion | awk -F $'.' '{print $1;}')
  stub_logger "[JavaSearch] macOS major version: ${macosVerMajor}"

  # read JDK's from '/usr/libexec/java_home -V' command
  # PSko: The output from -X (xml plist) would be probably better and more reliable
  while read -r line; do
    if [ "${macosVerMajor}" -ge 13 ] ; then # macOS Ventura+
      version=$(echo $line | awk -F $' ' '{print $1;}')
      path=$(echo $line | awk -F $'" ' '{print $3;}')
    else                                    # pre-Ventura (probably a different output was then)
      version=$(echo $line | awk -F $',' '{print $1;}')
      path=$(echo $line | awk -F $'" ' '{print $2;}')
    fi
    path+="/bin/java"
    allJVMs+=("$version:$path")
  done < <(/usr/libexec/java_home -V 2>&1 | grep '^[[:space:]]')
  # unset while loop variables
  unset version path

  # add Apple JRE if available
  if [ -x "${apple_jre_plugin}" ] ; then
    allJVMs+=("$apple_jre_version:$apple_jre_plugin")
  fi

  # add Oracle JRE if available
  if [ -x "${oracle_jre_plugin}" ] ; then
    allJVMs+=("$oracle_jre_version:$oracle_jre_plugin")
  fi

  # debug output
  for i in "${allJVMs[@]}"
  do
    stub_logger "[JavaSearch] ... found JVM: $i"
  done


  # determine JVMs matching the min/max version requirement
  minC=$(get_comparable_java_version ${JVMVersion})
  maxC=$(get_comparable_java_version ${JVMMaxVersion})
  matchingJVMs=()

  for i in "${allJVMs[@]}"
  do
    # split JVM string at ':' delimiter to retain spaces in $path substring
    IFS=: arr=($i) ; unset IFS
    # [0] JVM version number
    ver=${arr[0]}
    # comparable JVM version number
    comp=$(get_comparable_java_version $ver)
    # [1] JVM path
    path="${arr[1]}"
    # construct string item for adding to the "matchingJVMs" array
    item="$comp:$ver:$path"

    # pre-requisite: current version number needs to be greater than min version number
    if [ "$comp" -ge "$minC" ] ; then

      # perform max version checks if max version requirement is present
      if [ ! -z ${JVMMaxVersion} ] ; then

        # max version requirement ends with '*' modifier
        if [[ ${JVMMaxVersion} == *\* ]] ; then

          # use the '*' modifier from the max version string as wildcard for a 'starts with' comparison
          # and check whether the current version number starts with the max version wildcard string
          if [[ ${ver} == ${JVMMaxVersion} ]]; then
            matchingJVMs+=("$item")

          # or whether the current comparable version is lower than the comparable max version
          elif [ "$comp" -le "$maxC" ] ; then
            matchingJVMs+=("$item")
          fi

        # max version requirement ends with '+' modifier -> always add this version if it's greater than $min
        # because a max requirement with + modifier doesn't make sense
        elif [[ ${JVMMaxVersion} == *+ ]] ; then
          matchingJVMs+=("$item")

        # matches 6 zeros at the end of the max version string (e.g. for 1.8, 9)
        # -> then the max version string should be treated like with a '*' modifier at the end
        #elif [[ ${maxC} =~ ^[0-9]{2}0{6}$ ]] && [ "$comp" -le $(( ${maxC#0} + 999 )) ] ; then
        #	matchingJVMs+=("$item")

        # matches 3 zeros at the end of the max version string (e.g. for 9.1, 10.3)
        # -> then the max version string should be treated like with a '*' modifier at the end
        #elif [[ ${maxC} =~ ^[0-9]{5}0{3}$ ]] && [ "$comp" -le "${maxC}" ] ; then
        #	matchingJVMs+=("$item")

        # matches standard requirements without modifier
        elif [ "$comp" -le "$maxC" ]; then
          matchingJVMs+=("$item")
        fi

      # no max version requirement:

      # min version requirement ends with '+' modifier
      # -> always add the current version because it's greater than $min
      elif [[ ${JVMVersion} == *+ ]] ; then
        matchingJVMs+=("$item")

      # min version requirement ends with '*' modifier
      # -> use the '*' modifier from the min version string as wildcard for a 'starts with' comparison
      #    and check whether the current version number starts with the min version wildcard string
      elif [[ ${JVMVersion} == *\* ]] ; then
        if [[ ${ver} == ${JVMVersion} ]] ; then
          matchingJVMs+=("$item")
        fi

      # compare the min version against the current version with an additional * wildcard for a 'starts with' comparison
      # -> e.g. add 1.8.0_44 when the requirement is 1.8
      elif [[ ${ver} == ${JVMVersion}* ]] ; then
          matchingJVMs+=("$item")
      fi
    fi
  done
  # unset for loop variables
  unset arr ver comp path item

  # debug output
  for i in "${matchingJVMs[@]}"
  do
    stub_logger "[JavaSearch] ... ... matches all requirements: $i"
  done


  # sort the matching JavaVirtualMachines by version number
  # https://stackoverflow.com/a/11789688/1128689
  IFS=$'\n' matchingJVMs=($(sort -nr <<<"${matchingJVMs[*]}"))
  unset IFS


  # get the highest matching JVM
  for ((i = 0; i < ${#matchingJVMs[@]}; i++));
  do
    # split JVM string at ':' delimiter to retain spaces in $path substring
    IFS=: arr=(${matchingJVMs[$i]}) ; unset IFS
    # [0] comparable JVM version number
    comp=${arr[0]}
    # [1] JVM version number
    ver=${arr[1]}
    # [2] JVM path
    path="${arr[2]}"

    stub_logger "[JavaSort] Checking Java path: '$path', version: '$comp'"

    # use current value as JAVACMD if it's executable
    if [ -x "$path" ] ; then
      stub_logger "[JavaSort] Going to use Java @ path: '$path', version: '$comp' (is present and executable)"
      JAVACMD="$path"
      JAVACMD_version=$comp
      break
    fi
  done
  # unset for loop variables
  unset arr comp ver path
fi

# log the Java Command and the extracted version number
stub_logger "[JavaCommand] '$JAVACMD'"
stub_logger "[JavaVersion] $(get_java_version_from_cmd "${JAVACMD}")${JAVACMD_version:+ / $JAVACMD_version}"


if [ -z "${JAVACMD}" ] || [ ! -x "${JAVACMD}" ] ; then

  # different error messages when a specific JVM was required
  if [ ! -z "${JVMVersion}" ] ; then
    # display human readable java version (#28)
    java_version_hr=$(echo ${JVMVersion} | sed -E 's/^1\.([0-9+*]+)$/ \1/g' | sed "s/+/ ${MSG_JAVA_VERSION_OR_LATER}/;s/*/ ${MSG_JAVA_VERSION_LATEST}/")
    MSG_NO_SUITABLE_JAVA_EXPANDED=$(printf "${MSG_NO_SUITABLE_JAVA}" "${java_version_hr}").

    if [ ! -z "${JVMMaxVersion}" ] ; then
      java_version_hr=$(extract_java_major_version ${JVMVersion})
      java_version_max_hr=$(echo ${JVMMaxVersion} | sed -E 's/^1\.([0-9+*]+)$/ \1/g' | sed "s/+//;s/*/ ${MSG_JAVA_VERSION_LATEST}/")
      MSG_NO_SUITABLE_JAVA_EXPANDED="$(printf "${MSG_NO_SUITABLE_JAVA}" "${java_version_hr}") $(printf "${MSG_JAVA_VERSION_MAX}" "${java_version_max_hr}")"
    fi

    # log exit cause
    stub_logger "[EXIT 3] ${MSG_NO_SUITABLE_JAVA_EXPANDED}"

    # display error message with AppleScript
    osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_NO_SUITABLE_JAVA_EXPANDED}\n${MSG_NO_SUITABLE_JAVA_CHECK}\" with title \"${CFBundleName}\"  buttons {\" OK \", \"${MSG_VISIT_JAVA_DOT_COM}\"} default button \"${MSG_VISIT_JAVA_DOT_COM}\" with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)" \
        -e "set response to button returned of the result" \
        -e "if response is \"${MSG_VISIT_JAVA_DOT_COM}\" then open location \"http://java.com\""
    # exit with error
    exit 3

  else
    # log exit cause
    stub_logger "[EXIT 1] ${MSG_ERROR_LAUNCHING}"
    # display error message with AppleScript
    osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_INSTALL_JAVA}\" with title \"${CFBundleName}\" buttons {\"${MSG_LATER}\", \"${MSG_VISIT_JAVA_DOT_COM}\"} default button \"${MSG_VISIT_JAVA_DOT_COM}\" with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)" \
          -e "set response to button returned of the result" \
          -e "if response is \"${MSG_VISIT_JAVA_DOT_COM}\" then open location \"http://java.com\""
    # exit with error
    exit 1
  fi
fi



# MainClass check
############################################

if [ -z "${JVMMainClass}" ]; then
  # log exit cause
  stub_logger "[EXIT 2] ${MSG_MISSING_MAINCLASS}"
  # display error message with AppleScript
  osascript -e "tell application \"System Events\" to display dialog \"${MSG_ERROR_LAUNCHING}\n\n${MSG_MISSING_MAINCLASS}\" with title \"${CFBundleName}\" buttons {\" OK \"} default button 1 with icon path to resource \"${CFBundleIconFile}\" in bundle (path to me)"
  # exit with error
  exit 2
fi



# execute $JAVACMD and do some preparations
############################################

# enable drag&drop to the dock icon
export CFProcessPath="$0"

# remove Apples ProcessSerialNumber from passthru arguments (#39)
if [[ "$*" == -psn* ]] ; then
  ArgsPassthru=()
else
  ArgsPassthru=("$@")
fi

# change to Working Directory based upon Apple/Oracle Plist info
cd "${WorkingDirectory}" || exit 13
stub_logger "[WorkingDirectory] ${WorkingDirectory}"

# execute Java and set
# - classpath
# - splash image
# - dock icon
# - app name
# - JVM options / properties (-D)
# - JVM default options (-X)
# - main class
# - main class arguments
# - pass-through arguments from Terminal or Drag'n'Drop to Finder icon
stub_logger "[Exec] \"$JAVACMD\" -cp \"${JVMClassPath}\" -splash:\"${ResourcesFolder}/${JVMSplashFile}\" -Xdock:icon=\"${ResourcesFolder}/${CFBundleIconFile}\" -Xdock:name=\"${CFBundleName}\" ${JVMOptionsArr:+$(printf "'%s' " "${JVMOptionsArr[@]}") }${JVMDefaultOptions:+$JVMDefaultOptions }${JVMMainClass}${MainArgsArr:+ $(printf "'%s' " "${MainArgsArr[@]}")}${ArgsPassthru:+ $(printf "'%s' " "${ArgsPassthru[@]}")}"
exec "${JAVACMD}" \
    -cp "${JVMClassPath}" \
    -splash:"${ResourcesFolder}/${JVMSplashFile}" \
    -Xdock:icon="${ResourcesFolder}/${CFBundleIconFile}" \
    -Xdock:name="${CFBundleName}" \
    ${JVMOptionsArr:+"${JVMOptionsArr[@]}" }\
    ${JVMDefaultOptions:+$JVMDefaultOptions }\
    "${JVMMainClass}"\
    ${MainArgsArr:+ "${MainArgsArr[@]}"}\
    ${ArgsPassthru:+ "${ArgsPassthru[@]}"}
