build.xml

<project name="InventoryTweaks" default="dist" basedir=".">

	<description>
		Deployment to Minecraft task
    </description>

	<!-- OS-specific properties -->
	<condition property="modsDir" value="${user.home}/AppData/Roaming/.minecraft/mods">
		<os family="windows" />
	</condition>
	<condition property="modsDir" value="${user.home}:Library:Application\ Support:minecraft:mods">
		<os name="Mac OS X" />
	</condition>
	<condition property="modsDir" value="${user.home}/.minecraft/mods">
		<os family="unix" />
	</condition>
	
	<!-- Mod archive distribution -->
	<target name="dist">
		<echo>Installing...</echo>
		<mkdir dir="${modsDir}" />
		<echo>  - Removing possible older version</echo>
		<delete>
			<fileset dir="${modsDir}" includes="InvTweaks*" />
		</delete>
		<echo>  - Copying zip to mods folder</echo>
		<copy todir="${modsDir}">
			<fileset dir="." includes="InvTweaks-DEV.zip" />
		</copy>
		<echo>  - Done!</echo>
	</target>

	<!-- Launcher setup -->
	<property name="script" value="java -Xmx1024m -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8000 -Dsun.java2d.noddraw=true -Dsun.java2d.d3d=false -Dsun.java2d.opengl=false -Dsun.java2d.pmoffscreen=false -classpath minecraft.jar  net.minecraft.LauncherFrame" />
	<condition property="launcher.not.available">
		<not>
			<available file="launcher" property="minecraft.jar.present"/>
		</not>
	</condition>
	
	<target name="launcher" if="launcher.not.available">
		<mkdir dir="launcher" />
		<get src="https://s3.amazonaws.com/MinecraftDownload/launcher/minecraft.jar" dest="launcher/minecraft.jar"/>
		<echo file="launcher/debug.bat" message="${script}" />
		<echo file="launcher/debug.sh" message="${script}" />
	</target>
	
</project>