minecraft.sh

#!/bin/bash

BUILD_XML="<?xml version=\"1.0\" encoding=\"UTF-8\"?><project name=\"Minecraft\" default=\"default\" basedir=\".\"><taskdef name=\"bundleapp\" classname=\"com.oracle.appbundler.AppBundlerTask\" classpath=\"appbundler-1.0.jar\" /><target name=\"bundle-Minecraft\"><bundleapp outputdirectory=\".\" name=\"Minecraft\" displayname=\"Minecraft\" identifier=\"net.minecraft\" mainclassname=\"net.minecraft.bootstrap.Bootstrap\"><classpath file=\"Minecraft.jar\" /></bundleapp></target></project>"

curl https://s3.amazonaws.com/Minecraft.Download/launcher/Minecraft.jar -o Minecraft.jar
curl https://java.net/downloads/appbundler/appbundler-1.0.jar -o appbundler-1.0.jar
echo "$BUILD_XML" > build.xml
ant bundle-Minecraft

mkdir Minecraft && unzip -d Minecraft Minecraft.jar
sips -s format icns Minecraft/favicon.png --out favicon.icns
mv -f favicon.icns Minecraft.app/Contents/Resources/GenericApp.icns

rm -rf appbundler-1.0.jar build.xml Minecraft Minecraft.jar minecraft.sh