<project default="downloadPackaged" basedir="." xmlns:sf="antlib:com.salesforce">
    <target name="downloadPackaged">
        <fail unless="packageName" message="Please provide a package name via -DpackageName=<your package name>"/>
        <property name="dir" default="src"/>
        <retrievePackaged dir="${dir}" package="${packageName}" />
    </target>

    <macrodef name="retrievePackaged" description="Retrieves all metadata from a given package into the specified dir">
        <attribute name="package" description="The package name" />
        <attribute name="dir" description="The local directory to store the metadata files" />
        <attribute name="mkdir" description="Whether to delete and recreate the target dir" default="true" />
        <sequential>
            <if>
                <istrue value="@{mkdir}"/>
                <then>
                    <delete dir="@{dir}" />
                    <mkdir dir="@{dir}"/>
                </then>
            </if>
            <sf:retrieve
                    username="${sf.username}"
                    password="${sf.password}"
                    serverurl="${sf.serverurl}"
                    retrieveTarget="@{dir}"
                    packageNames="@{package}"/>
        </sequential>
    </macrodef>

</project>