#!/bin/bash
# Makes a library jar file java 7 compatible
set -eu
JAVA8_HOME="$HOME/jdk/jdk8"; export PATH="$JAVA8_HOME/bin:$PATH"
[[ -d "$JAVA8_HOME/bin" ]] || { echo "where's java8?"; exit 1; }

[[ "$PWD" =~ lib$ && -f jtreg.jar ]] \
    || { echo "run in lib directory"; exit 1; }

LIB=jtreg
rm -rf "$LIB"
mkdir "$LIB"
(
    cd "$LIB"
    jar xf "../$LIB.jar"

    wget -q -O "retrolambda.jar" "http://search.maven.org/remotecontent?filepath=net/orfjackal/retrolambda/retrolambda/2.3.0/retrolambda-2.3.0.jar"

    java \
	-Dretrolambda.inputDir=. \
	-Dretrolambda.classpath=../javatest.jar \
	-jar retrolambda.jar
    jar cmf META-INF/MANIFEST.MF "../$LIB.jar" .
)
rm -rf "$LIB"