#!/usr/bin/env bash

# Based on kotlinc.bat from the Kotlin distribution

resolveAbsolutePath() {

# if the given path to the kscript launcher is absolute (i.e. it is either starting with / or a

# 'letter:/' when using gitbash on windows) it is returned unchanged, otherwise we construct an absolute path

[[ $1 = /* ]] || [[ $1 =~ ^[A-z]:/ ]] && echo "$1" || echo "$PWD/${1#./}"

}

resolveSymlinks() (

if [[ $OSTYPE != darwin* ]]; then minusFarg="-f"; fi

sym_resolved=$(readlink ${minusFarg} $1)

if [[ -n $sym_resolved ]]; then

echo $sym_resolved

else

echo $1

fi

)

findJavaVersion() {

# Note that this only loads the first component of the version, so "1.8.0_265" -> "1".

# But it's fine because major version is 9 for JDK 9, and so on.

regex='^.*version "([[:digit:]]+).*$'

while read -r line; do

if [[ "$line" =~ $regex ]]; then

echo ${BASH_REMATCH[1]}

fi

done <<< $("${JAVACMD:=java}" -version 2>&1)

}

# Resolve KSCRIPT_HOME

KSCRIPT_HOME=$(dirname $(dirname $(resolveSymlinks $(resolveAbsolutePath $0))))

KSCRIPT_LIB="$KSCRIPT_HOME/bin"

# Resolve JAVA_CMD

if [ -z "$JAVACMD" -a -n "$JAVA_HOME" -a -x "$JAVA_HOME/bin/java" ]; then

JAVACMD="$JAVA_HOME/bin/java"

fi

# OSTYPE can be: linux*, freebsd, darwin*, cygwin, msys

if [[ "$OSTYPE" == "cygwin" || "$OSTYPE" == "msys" ]]; then

KSCRIPT_LIB=$(cygpath -w "${KSCRIPT_LIB}")

fi

## expose the name of the script being run to the script itself

export KSCRIPT_FILE="$1"

[ -n "$JAVA_OPTS" ] || JAVA_OPTS="-Xmx256M -Xms32M"

declare -a JAVA_ARGS

declare -a KOTLIN_ARGS

while [ $# -gt 0 ]; do

case "$1" in

-D*)

JAVA_ARGS=("${JAVA_ARGS[@]}" "$1")

shift

;;

-J*)

JAVA_ARGS=("${JAVA_ARGS[@]}" "${1:2}")

if [ "x${1:2}" = "x" ]; then

echo "error: empty -J argument"

exit 1

fi

shift

;;

*)

KOTLIN_ARGS=("${KOTLIN_ARGS[@]}" "$1")

shift

;;

esac

done

# Additional Java args

JAVA_VERSION="$(findJavaVersion)"

if [[ $JAVA_VERSION -ge 9 ]]; then

# Workaround the illegal reflective access warning from ReflectionUtil to ResourceBundle.setParent, see IDEA-248785.

JAVA_ARGS=("${JAVA_ARGS[@]}" "--add-opens" "java.base/java.util=ALL-UNNAMED")

fi

if [[ $JAVA_VERSION < 13 ]]; then

JAVA_ARGS=("${JAVA_ARGS[@]}" "-noverify")

fi

# KScript dependencies itself

CLASS_PATH="$KSCRIPT_LIB/*"

## execute process

"${JAVACMD:=java}" $JAVA_OPTS "${JAVA_ARGS[@]}" -classpath "$CLASS_PATH" io.github.kscripting.kscript.KscriptKt "$OSTYPE" "${KOTLIN_ARGS[@]}"